diff options
Diffstat (limited to 'drivers/scsi/mpt3sas/mpt3sas_base.c')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_base.c | 8959 |
1 files changed, 8959 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c new file mode 100644 index 000000000..a75f670bf --- /dev/null +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -0,0 +1,8959 @@ +/* + * This is the Fusion MPT base driver providing common API layer interface + * for access to MPT (Message Passing Technology) firmware. + * + * This code is based on drivers/scsi/mpt3sas/mpt3sas_base.c + * Copyright (C) 2012-2014 LSI Corporation + * Copyright (C) 2013-2014 Avago Technologies + * (mailto: MPT-FusionLinux.pdl@avagotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/blkdev.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> +#include <linux/time.h> +#include <linux/ktime.h> +#include <linux/kthread.h> +#include <asm/page.h> /* To get host page size per arch */ + + +#include "mpt3sas_base.h" + +static MPT_CALLBACK mpt_callbacks[MPT_MAX_CALLBACKS]; + + +#define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */ + + /* maximum controller queue depth */ +#define MAX_HBA_QUEUE_DEPTH 30000 +#define MAX_CHAIN_DEPTH 100000 +static int max_queue_depth = -1; +module_param(max_queue_depth, int, 0444); +MODULE_PARM_DESC(max_queue_depth, " max controller queue depth "); + +static int max_sgl_entries = -1; +module_param(max_sgl_entries, int, 0444); +MODULE_PARM_DESC(max_sgl_entries, " max sg entries "); + +static int msix_disable = -1; +module_param(msix_disable, int, 0444); +MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)"); + +static int smp_affinity_enable = 1; +module_param(smp_affinity_enable, int, 0444); +MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)"); + +static int max_msix_vectors = -1; +module_param(max_msix_vectors, int, 0444); +MODULE_PARM_DESC(max_msix_vectors, + " max msix vectors"); + +static int irqpoll_weight = -1; +module_param(irqpoll_weight, int, 0444); +MODULE_PARM_DESC(irqpoll_weight, + "irq poll weight (default= one fourth of HBA queue depth)"); + +static int mpt3sas_fwfault_debug; +MODULE_PARM_DESC(mpt3sas_fwfault_debug, + " enable detection of firmware fault and halt firmware - (default=0)"); + +static int perf_mode = -1; +module_param(perf_mode, int, 0444); +MODULE_PARM_DESC(perf_mode, + "Performance mode (only for Aero/Sea Generation), options:\n\t\t" + "0 - balanced: high iops mode is enabled &\n\t\t" + "interrupt coalescing is enabled only on high iops queues,\n\t\t" + "1 - iops: high iops mode is disabled &\n\t\t" + "interrupt coalescing is enabled on all queues,\n\t\t" + "2 - latency: high iops mode is disabled &\n\t\t" + "interrupt coalescing is enabled on all queues with timeout value 0xA,\n" + "\t\tdefault - default perf_mode is 'balanced'" + ); + +static int poll_queues; +module_param(poll_queues, int, 0444); +MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t" + "This parameter is effective only if host_tagset_enable=1. &\n\t\t" + "when poll_queues are enabled then &\n\t\t" + "perf_mode is set to latency mode. &\n\t\t" + ); + +enum mpt3sas_perf_mode { + MPT_PERF_MODE_DEFAULT = -1, + MPT_PERF_MODE_BALANCED = 0, + MPT_PERF_MODE_IOPS = 1, + MPT_PERF_MODE_LATENCY = 2, +}; + +static int +_base_wait_on_iocstate(struct MPT3SAS_ADAPTER *ioc, + u32 ioc_state, int timeout); +static int +_base_get_ioc_facts(struct MPT3SAS_ADAPTER *ioc); +static void +_base_clear_outstanding_commands(struct MPT3SAS_ADAPTER *ioc); + +static u32 +_base_readl_ext_retry(const void __iomem *addr); + +/** + * mpt3sas_base_check_cmd_timeout - Function + * to check timeout and command termination due + * to Host reset. + * + * @ioc: per adapter object. + * @status: Status of issued command. + * @mpi_request:mf request pointer. + * @sz: size of buffer. + * + * Return: 1/0 Reset to be done or Not + */ +u8 +mpt3sas_base_check_cmd_timeout(struct MPT3SAS_ADAPTER *ioc, + u8 status, void *mpi_request, int sz) +{ + u8 issue_reset = 0; + + if (!(status & MPT3_CMD_RESET)) + issue_reset = 1; + + ioc_err(ioc, "Command %s\n", + issue_reset == 0 ? "terminated due to Host Reset" : "Timeout"); + _debug_dump_mf(mpi_request, sz); + + return issue_reset; +} + +/** + * _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug. + * @val: ? + * @kp: ? + * + * Return: ? + */ +static int +_scsih_set_fwfault_debug(const char *val, const struct kernel_param *kp) +{ + int ret = param_set_int(val, kp); + struct MPT3SAS_ADAPTER *ioc; + + if (ret) + return ret; + + /* global ioc spinlock to protect controller list on list operations */ + pr_info("setting fwfault_debug(%d)\n", mpt3sas_fwfault_debug); + spin_lock(&gioc_lock); + list_for_each_entry(ioc, &mpt3sas_ioc_list, list) + ioc->fwfault_debug = mpt3sas_fwfault_debug; + spin_unlock(&gioc_lock); + return 0; +} +module_param_call(mpt3sas_fwfault_debug, _scsih_set_fwfault_debug, + param_get_int, &mpt3sas_fwfault_debug, 0644); + +/** + * _base_readl_aero - retry readl for max three times. + * @addr: MPT Fusion system interface register address + * + * Retry the readl() for max three times if it gets zero value + * while reading the system interface register. + */ +static inline u32 +_base_readl_aero(const void __iomem *addr) +{ + u32 i = 0, ret_val; + + do { + ret_val = readl(addr); + i++; + } while (ret_val == 0 && i < 3); + + return ret_val; +} + +static u32 +_base_readl_ext_retry(const void __iomem *addr) +{ + u32 i, ret_val; + + for (i = 0 ; i < 30 ; i++) { + ret_val = readl(addr); + if (ret_val != 0) + break; + } + + return ret_val; +} + +static inline u32 +_base_readl(const void __iomem *addr) +{ + return readl(addr); +} + +/** + * _base_clone_reply_to_sys_mem - copies reply to reply free iomem + * in BAR0 space. + * + * @ioc: per adapter object + * @reply: reply message frame(lower 32bit addr) + * @index: System request message index. + */ +static void +_base_clone_reply_to_sys_mem(struct MPT3SAS_ADAPTER *ioc, u32 reply, + u32 index) +{ + /* + * 256 is offset within sys register. + * 256 offset MPI frame starts. Max MPI frame supported is 32. + * 32 * 128 = 4K. From here, Clone of reply free for mcpu starts + */ + u16 cmd_credit = ioc->facts.RequestCredit + 1; + void __iomem *reply_free_iomem = (void __iomem *)ioc->chip + + MPI_FRAME_START_OFFSET + + (cmd_credit * ioc->request_sz) + (index * sizeof(u32)); + + writel(reply, reply_free_iomem); +} + +/** + * _base_clone_mpi_to_sys_mem - Writes/copies MPI frames + * to system/BAR0 region. + * + * @dst_iomem: Pointer to the destination location in BAR0 space. + * @src: Pointer to the Source data. + * @size: Size of data to be copied. + */ +static void +_base_clone_mpi_to_sys_mem(void *dst_iomem, void *src, u32 size) +{ + int i; + u32 *src_virt_mem = (u32 *)src; + + for (i = 0; i < size/4; i++) + writel((u32)src_virt_mem[i], + (void __iomem *)dst_iomem + (i * 4)); +} + +/** + * _base_clone_to_sys_mem - Writes/copies data to system/BAR0 region + * + * @dst_iomem: Pointer to the destination location in BAR0 space. + * @src: Pointer to the Source data. + * @size: Size of data to be copied. + */ +static void +_base_clone_to_sys_mem(void __iomem *dst_iomem, void *src, u32 size) +{ + int i; + u32 *src_virt_mem = (u32 *)(src); + + for (i = 0; i < size/4; i++) + writel((u32)src_virt_mem[i], + (void __iomem *)dst_iomem + (i * 4)); +} + +/** + * _base_get_chain - Calculates and Returns virtual chain address + * for the provided smid in BAR0 space. + * + * @ioc: per adapter object + * @smid: system request message index + * @sge_chain_count: Scatter gather chain count. + * + * Return: the chain address. + */ +static inline void __iomem* +_base_get_chain(struct MPT3SAS_ADAPTER *ioc, u16 smid, + u8 sge_chain_count) +{ + void __iomem *base_chain, *chain_virt; + u16 cmd_credit = ioc->facts.RequestCredit + 1; + + base_chain = (void __iomem *)ioc->chip + MPI_FRAME_START_OFFSET + + (cmd_credit * ioc->request_sz) + + REPLY_FREE_POOL_SIZE; + chain_virt = base_chain + (smid * ioc->facts.MaxChainDepth * + ioc->request_sz) + (sge_chain_count * ioc->request_sz); + return chain_virt; +} + +/** + * _base_get_chain_phys - Calculates and Returns physical address + * in BAR0 for scatter gather chains, for + * the provided smid. + * + * @ioc: per adapter object + * @smid: system request message index + * @sge_chain_count: Scatter gather chain count. + * + * Return: Physical chain address. + */ +static inline phys_addr_t +_base_get_chain_phys(struct MPT3SAS_ADAPTER *ioc, u16 smid, + u8 sge_chain_count) +{ + phys_addr_t base_chain_phys, chain_phys; + u16 cmd_credit = ioc->facts.RequestCredit + 1; + + base_chain_phys = ioc->chip_phys + MPI_FRAME_START_OFFSET + + (cmd_credit * ioc->request_sz) + + REPLY_FREE_POOL_SIZE; + chain_phys = base_chain_phys + (smid * ioc->facts.MaxChainDepth * + ioc->request_sz) + (sge_chain_count * ioc->request_sz); + return chain_phys; +} + +/** + * _base_get_buffer_bar0 - Calculates and Returns BAR0 mapped Host + * buffer address for the provided smid. + * (Each smid can have 64K starts from 17024) + * + * @ioc: per adapter object + * @smid: system request message index + * + * Return: Pointer to buffer location in BAR0. + */ + +static void __iomem * +_base_get_buffer_bar0(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + u16 cmd_credit = ioc->facts.RequestCredit + 1; + // Added extra 1 to reach end of chain. + void __iomem *chain_end = _base_get_chain(ioc, + cmd_credit + 1, + ioc->facts.MaxChainDepth); + return chain_end + (smid * 64 * 1024); +} + +/** + * _base_get_buffer_phys_bar0 - Calculates and Returns BAR0 mapped + * Host buffer Physical address for the provided smid. + * (Each smid can have 64K starts from 17024) + * + * @ioc: per adapter object + * @smid: system request message index + * + * Return: Pointer to buffer location in BAR0. + */ +static phys_addr_t +_base_get_buffer_phys_bar0(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + u16 cmd_credit = ioc->facts.RequestCredit + 1; + phys_addr_t chain_end_phys = _base_get_chain_phys(ioc, + cmd_credit + 1, + ioc->facts.MaxChainDepth); + return chain_end_phys + (smid * 64 * 1024); +} + +/** + * _base_get_chain_buffer_dma_to_chain_buffer - Iterates chain + * lookup list and Provides chain_buffer + * address for the matching dma address. + * (Each smid can have 64K starts from 17024) + * + * @ioc: per adapter object + * @chain_buffer_dma: Chain buffer dma address. + * + * Return: Pointer to chain buffer. Or Null on Failure. + */ +static void * +_base_get_chain_buffer_dma_to_chain_buffer(struct MPT3SAS_ADAPTER *ioc, + dma_addr_t chain_buffer_dma) +{ + u16 index, j; + struct chain_tracker *ct; + + for (index = 0; index < ioc->scsiio_depth; index++) { + for (j = 0; j < ioc->chains_needed_per_io; j++) { + ct = &ioc->chain_lookup[index].chains_per_smid[j]; + if (ct && ct->chain_buffer_dma == chain_buffer_dma) + return ct->chain_buffer; + } + } + ioc_info(ioc, "Provided chain_buffer_dma address is not in the lookup list\n"); + return NULL; +} + +/** + * _clone_sg_entries - MPI EP's scsiio and config requests + * are handled here. Base function for + * double buffering, before submitting + * the requests. + * + * @ioc: per adapter object. + * @mpi_request: mf request pointer. + * @smid: system request message index. + */ +static void _clone_sg_entries(struct MPT3SAS_ADAPTER *ioc, + void *mpi_request, u16 smid) +{ + Mpi2SGESimple32_t *sgel, *sgel_next; + u32 sgl_flags, sge_chain_count = 0; + bool is_write = false; + u16 i = 0; + void __iomem *buffer_iomem; + phys_addr_t buffer_iomem_phys; + void __iomem *buff_ptr; + phys_addr_t buff_ptr_phys; + void __iomem *dst_chain_addr[MCPU_MAX_CHAINS_PER_IO]; + void *src_chain_addr[MCPU_MAX_CHAINS_PER_IO]; + phys_addr_t dst_addr_phys; + MPI2RequestHeader_t *request_hdr; + struct scsi_cmnd *scmd; + struct scatterlist *sg_scmd = NULL; + int is_scsiio_req = 0; + + request_hdr = (MPI2RequestHeader_t *) mpi_request; + + if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST) { + Mpi25SCSIIORequest_t *scsiio_request = + (Mpi25SCSIIORequest_t *)mpi_request; + sgel = (Mpi2SGESimple32_t *) &scsiio_request->SGL; + is_scsiio_req = 1; + } else if (request_hdr->Function == MPI2_FUNCTION_CONFIG) { + Mpi2ConfigRequest_t *config_req = + (Mpi2ConfigRequest_t *)mpi_request; + sgel = (Mpi2SGESimple32_t *) &config_req->PageBufferSGE; + } else + return; + + /* From smid we can get scsi_cmd, once we have sg_scmd, + * we just need to get sg_virt and sg_next to get virtual + * address associated with sgel->Address. + */ + + if (is_scsiio_req) { + /* Get scsi_cmd using smid */ + scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid); + if (scmd == NULL) { + ioc_err(ioc, "scmd is NULL\n"); + return; + } + + /* Get sg_scmd from scmd provided */ + sg_scmd = scsi_sglist(scmd); + } + + /* + * 0 - 255 System register + * 256 - 4352 MPI Frame. (This is based on maxCredit 32) + * 4352 - 4864 Reply_free pool (512 byte is reserved + * considering maxCredit 32. Reply need extra + * room, for mCPU case kept four times of + * maxCredit). + * 4864 - 17152 SGE chain element. (32cmd * 3 chain of + * 128 byte size = 12288) + * 17152 - x Host buffer mapped with smid. + * (Each smid can have 64K Max IO.) + * BAR0+Last 1K MSIX Addr and Data + * Total size in use 2113664 bytes of 4MB BAR0 + */ + + buffer_iomem = _base_get_buffer_bar0(ioc, smid); + buffer_iomem_phys = _base_get_buffer_phys_bar0(ioc, smid); + + buff_ptr = buffer_iomem; + buff_ptr_phys = buffer_iomem_phys; + WARN_ON(buff_ptr_phys > U32_MAX); + + if (le32_to_cpu(sgel->FlagsLength) & + (MPI2_SGE_FLAGS_HOST_TO_IOC << MPI2_SGE_FLAGS_SHIFT)) + is_write = true; + + for (i = 0; i < MPT_MIN_PHYS_SEGMENTS + ioc->facts.MaxChainDepth; i++) { + + sgl_flags = + (le32_to_cpu(sgel->FlagsLength) >> MPI2_SGE_FLAGS_SHIFT); + + switch (sgl_flags & MPI2_SGE_FLAGS_ELEMENT_MASK) { + case MPI2_SGE_FLAGS_CHAIN_ELEMENT: + /* + * Helper function which on passing + * chain_buffer_dma returns chain_buffer. Get + * the virtual address for sgel->Address + */ + sgel_next = + _base_get_chain_buffer_dma_to_chain_buffer(ioc, + le32_to_cpu(sgel->Address)); + if (sgel_next == NULL) + return; + /* + * This is coping 128 byte chain + * frame (not a host buffer) + */ + dst_chain_addr[sge_chain_count] = + _base_get_chain(ioc, + smid, sge_chain_count); + src_chain_addr[sge_chain_count] = + (void *) sgel_next; + dst_addr_phys = _base_get_chain_phys(ioc, + smid, sge_chain_count); + WARN_ON(dst_addr_phys > U32_MAX); + sgel->Address = + cpu_to_le32(lower_32_bits(dst_addr_phys)); + sgel = sgel_next; + sge_chain_count++; + break; + case MPI2_SGE_FLAGS_SIMPLE_ELEMENT: + if (is_write) { + if (is_scsiio_req) { + _base_clone_to_sys_mem(buff_ptr, + sg_virt(sg_scmd), + (le32_to_cpu(sgel->FlagsLength) & + 0x00ffffff)); + /* + * FIXME: this relies on a a zero + * PCI mem_offset. + */ + sgel->Address = + cpu_to_le32((u32)buff_ptr_phys); + } else { + _base_clone_to_sys_mem(buff_ptr, + ioc->config_vaddr, + (le32_to_cpu(sgel->FlagsLength) & + 0x00ffffff)); + sgel->Address = + cpu_to_le32((u32)buff_ptr_phys); + } + } + buff_ptr += (le32_to_cpu(sgel->FlagsLength) & + 0x00ffffff); + buff_ptr_phys += (le32_to_cpu(sgel->FlagsLength) & + 0x00ffffff); + if ((le32_to_cpu(sgel->FlagsLength) & + (MPI2_SGE_FLAGS_END_OF_BUFFER + << MPI2_SGE_FLAGS_SHIFT))) + goto eob_clone_chain; + else { + /* + * Every single element in MPT will have + * associated sg_next. Better to sanity that + * sg_next is not NULL, but it will be a bug + * if it is null. + */ + if (is_scsiio_req) { + sg_scmd = sg_next(sg_scmd); + if (sg_scmd) + sgel++; + else + goto eob_clone_chain; + } + } + break; + } + } + +eob_clone_chain: + for (i = 0; i < sge_chain_count; i++) { + if (is_scsiio_req) + _base_clone_to_sys_mem(dst_chain_addr[i], + src_chain_addr[i], ioc->request_sz); + } +} + +/** + * mpt3sas_remove_dead_ioc_func - kthread context to remove dead ioc + * @arg: input argument, used to derive ioc + * + * Return: + * 0 if controller is removed from pci subsystem. + * -1 for other case. + */ +static int mpt3sas_remove_dead_ioc_func(void *arg) +{ + struct MPT3SAS_ADAPTER *ioc = (struct MPT3SAS_ADAPTER *)arg; + struct pci_dev *pdev; + + if (!ioc) + return -1; + + pdev = ioc->pdev; + if (!pdev) + return -1; + pci_stop_and_remove_bus_device_locked(pdev); + return 0; +} + +/** + * _base_sync_drv_fw_timestamp - Sync Drive-Fw TimeStamp. + * @ioc: Per Adapter Object + * + * Return: nothing. + */ +static void _base_sync_drv_fw_timestamp(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi26IoUnitControlRequest_t *mpi_request; + Mpi26IoUnitControlReply_t *mpi_reply; + u16 smid; + ktime_t current_time; + u64 TimeStamp = 0; + u8 issue_reset = 0; + + mutex_lock(&ioc->scsih_cmds.mutex); + if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) { + ioc_err(ioc, "scsih_cmd in use %s\n", __func__); + goto out; + } + ioc->scsih_cmds.status = MPT3_CMD_PENDING; + smid = mpt3sas_base_get_smid(ioc, ioc->scsih_cb_idx); + if (!smid) { + ioc_err(ioc, "Failed obtaining a smid %s\n", __func__); + ioc->scsih_cmds.status = MPT3_CMD_NOT_USED; + goto out; + } + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->scsih_cmds.smid = smid; + memset(mpi_request, 0, sizeof(Mpi26IoUnitControlRequest_t)); + mpi_request->Function = MPI2_FUNCTION_IO_UNIT_CONTROL; + mpi_request->Operation = MPI26_CTRL_OP_SET_IOC_PARAMETER; + mpi_request->IOCParameter = MPI26_SET_IOC_PARAMETER_SYNC_TIMESTAMP; + current_time = ktime_get_real(); + TimeStamp = ktime_to_ms(current_time); + mpi_request->Reserved7 = cpu_to_le32(TimeStamp >> 32); + mpi_request->IOCParameterValue = cpu_to_le32(TimeStamp & 0xFFFFFFFF); + init_completion(&ioc->scsih_cmds.done); + ioc->put_smid_default(ioc, smid); + dinitprintk(ioc, ioc_info(ioc, + "Io Unit Control Sync TimeStamp (sending), @time %lld ms\n", + TimeStamp)); + wait_for_completion_timeout(&ioc->scsih_cmds.done, + MPT3SAS_TIMESYNC_TIMEOUT_SECONDS*HZ); + if (!(ioc->scsih_cmds.status & MPT3_CMD_COMPLETE)) { + mpt3sas_check_cmd_timeout(ioc, + ioc->scsih_cmds.status, mpi_request, + sizeof(Mpi2SasIoUnitControlRequest_t)/4, issue_reset); + goto issue_host_reset; + } + if (ioc->scsih_cmds.status & MPT3_CMD_REPLY_VALID) { + mpi_reply = ioc->scsih_cmds.reply; + dinitprintk(ioc, ioc_info(ioc, + "Io Unit Control sync timestamp (complete): ioc_status(0x%04x), loginfo(0x%08x)\n", + le16_to_cpu(mpi_reply->IOCStatus), + le32_to_cpu(mpi_reply->IOCLogInfo))); + } +issue_host_reset: + if (issue_reset) + mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); + ioc->scsih_cmds.status = MPT3_CMD_NOT_USED; +out: + mutex_unlock(&ioc->scsih_cmds.mutex); +} + +/** + * _base_fault_reset_work - workq handling ioc fault conditions + * @work: input argument, used to derive ioc + * + * Context: sleep. + */ +static void +_base_fault_reset_work(struct work_struct *work) +{ + struct MPT3SAS_ADAPTER *ioc = + container_of(work, struct MPT3SAS_ADAPTER, fault_reset_work.work); + unsigned long flags; + u32 doorbell; + int rc; + struct task_struct *p; + + + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + if ((ioc->shost_recovery && (ioc->ioc_coredump_loop == 0)) || + ioc->pci_error_recovery) + goto rearm_timer; + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + + doorbell = mpt3sas_base_get_iocstate(ioc, 0); + if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_MASK) { + ioc_err(ioc, "SAS host is non-operational !!!!\n"); + + /* It may be possible that EEH recovery can resolve some of + * pci bus failure issues rather removing the dead ioc function + * by considering controller is in a non-operational state. So + * here priority is given to the EEH recovery. If it doesn't + * not resolve this issue, mpt3sas driver will consider this + * controller to non-operational state and remove the dead ioc + * function. + */ + if (ioc->non_operational_loop++ < 5) { + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, + flags); + goto rearm_timer; + } + + /* + * Call _scsih_flush_pending_cmds callback so that we flush all + * pending commands back to OS. This call is required to avoid + * deadlock at block layer. Dead IOC will fail to do diag reset, + * and this call is safe since dead ioc will never return any + * command back from HW. + */ + mpt3sas_base_pause_mq_polling(ioc); + ioc->schedule_dead_ioc_flush_running_cmds(ioc); + /* + * Set remove_host flag early since kernel thread will + * take some time to execute. + */ + ioc->remove_host = 1; + /*Remove the Dead Host */ + p = kthread_run(mpt3sas_remove_dead_ioc_func, ioc, + "%s_dead_ioc_%d", ioc->driver_name, ioc->id); + if (IS_ERR(p)) + ioc_err(ioc, "%s: Running mpt3sas_dead_ioc thread failed !!!!\n", + __func__); + else + ioc_err(ioc, "%s: Running mpt3sas_dead_ioc thread success !!!!\n", + __func__); + return; /* don't rearm timer */ + } + + if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_COREDUMP) { + u8 timeout = (ioc->manu_pg11.CoreDumpTOSec) ? + ioc->manu_pg11.CoreDumpTOSec : + MPT3SAS_DEFAULT_COREDUMP_TIMEOUT_SECONDS; + + timeout /= (FAULT_POLLING_INTERVAL/1000); + + if (ioc->ioc_coredump_loop == 0) { + mpt3sas_print_coredump_info(ioc, + doorbell & MPI2_DOORBELL_DATA_MASK); + /* do not accept any IOs and disable the interrupts */ + spin_lock_irqsave( + &ioc->ioc_reset_in_progress_lock, flags); + ioc->shost_recovery = 1; + spin_unlock_irqrestore( + &ioc->ioc_reset_in_progress_lock, flags); + mpt3sas_base_mask_interrupts(ioc); + mpt3sas_base_pause_mq_polling(ioc); + _base_clear_outstanding_commands(ioc); + } + + ioc_info(ioc, "%s: CoreDump loop %d.", + __func__, ioc->ioc_coredump_loop); + + /* Wait until CoreDump completes or times out */ + if (ioc->ioc_coredump_loop++ < timeout) { + spin_lock_irqsave( + &ioc->ioc_reset_in_progress_lock, flags); + goto rearm_timer; + } + } + + if (ioc->ioc_coredump_loop) { + if ((doorbell & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_COREDUMP) + ioc_err(ioc, "%s: CoreDump completed. LoopCount: %d", + __func__, ioc->ioc_coredump_loop); + else + ioc_err(ioc, "%s: CoreDump Timed out. LoopCount: %d", + __func__, ioc->ioc_coredump_loop); + ioc->ioc_coredump_loop = MPT3SAS_COREDUMP_LOOP_DONE; + } + ioc->non_operational_loop = 0; + if ((doorbell & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL) { + rc = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); + ioc_warn(ioc, "%s: hard reset: %s\n", + __func__, rc == 0 ? "success" : "failed"); + doorbell = mpt3sas_base_get_iocstate(ioc, 0); + if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) { + mpt3sas_print_fault_code(ioc, doorbell & + MPI2_DOORBELL_DATA_MASK); + } else if ((doorbell & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_COREDUMP) + mpt3sas_print_coredump_info(ioc, doorbell & + MPI2_DOORBELL_DATA_MASK); + if (rc && (doorbell & MPI2_IOC_STATE_MASK) != + MPI2_IOC_STATE_OPERATIONAL) + return; /* don't rearm timer */ + } + ioc->ioc_coredump_loop = 0; + if (ioc->time_sync_interval && + ++ioc->timestamp_update_count >= ioc->time_sync_interval) { + ioc->timestamp_update_count = 0; + _base_sync_drv_fw_timestamp(ioc); + } + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + rearm_timer: + if (ioc->fault_reset_work_q) + queue_delayed_work(ioc->fault_reset_work_q, + &ioc->fault_reset_work, + msecs_to_jiffies(FAULT_POLLING_INTERVAL)); + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); +} + +/** + * mpt3sas_base_start_watchdog - start the fault_reset_work_q + * @ioc: per adapter object + * + * Context: sleep. + */ +void +mpt3sas_base_start_watchdog(struct MPT3SAS_ADAPTER *ioc) +{ + unsigned long flags; + + if (ioc->fault_reset_work_q) + return; + + ioc->timestamp_update_count = 0; + /* initialize fault polling */ + + INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work); + snprintf(ioc->fault_reset_work_q_name, + sizeof(ioc->fault_reset_work_q_name), "poll_%s%d_status", + ioc->driver_name, ioc->id); + ioc->fault_reset_work_q = + create_singlethread_workqueue(ioc->fault_reset_work_q_name); + if (!ioc->fault_reset_work_q) { + ioc_err(ioc, "%s: failed (line=%d)\n", __func__, __LINE__); + return; + } + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + if (ioc->fault_reset_work_q) + queue_delayed_work(ioc->fault_reset_work_q, + &ioc->fault_reset_work, + msecs_to_jiffies(FAULT_POLLING_INTERVAL)); + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); +} + +/** + * mpt3sas_base_stop_watchdog - stop the fault_reset_work_q + * @ioc: per adapter object + * + * Context: sleep. + */ +void +mpt3sas_base_stop_watchdog(struct MPT3SAS_ADAPTER *ioc) +{ + unsigned long flags; + struct workqueue_struct *wq; + + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + wq = ioc->fault_reset_work_q; + ioc->fault_reset_work_q = NULL; + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + if (wq) { + if (!cancel_delayed_work_sync(&ioc->fault_reset_work)) + flush_workqueue(wq); + destroy_workqueue(wq); + } +} + +/** + * mpt3sas_base_fault_info - verbose translation of firmware FAULT code + * @ioc: per adapter object + * @fault_code: fault code + */ +void +mpt3sas_base_fault_info(struct MPT3SAS_ADAPTER *ioc, u16 fault_code) +{ + ioc_err(ioc, "fault_state(0x%04x)!\n", fault_code); +} + +/** + * mpt3sas_base_coredump_info - verbose translation of firmware CoreDump state + * @ioc: per adapter object + * @fault_code: fault code + * + * Return: nothing. + */ +void +mpt3sas_base_coredump_info(struct MPT3SAS_ADAPTER *ioc, u16 fault_code) +{ + ioc_err(ioc, "coredump_state(0x%04x)!\n", fault_code); +} + +/** + * mpt3sas_base_wait_for_coredump_completion - Wait until coredump + * completes or times out + * @ioc: per adapter object + * @caller: caller function name + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_wait_for_coredump_completion(struct MPT3SAS_ADAPTER *ioc, + const char *caller) +{ + u8 timeout = (ioc->manu_pg11.CoreDumpTOSec) ? + ioc->manu_pg11.CoreDumpTOSec : + MPT3SAS_DEFAULT_COREDUMP_TIMEOUT_SECONDS; + + int ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_FAULT, + timeout); + + if (ioc_state) + ioc_err(ioc, + "%s: CoreDump timed out. (ioc_state=0x%x)\n", + caller, ioc_state); + else + ioc_info(ioc, + "%s: CoreDump completed. (ioc_state=0x%x)\n", + caller, ioc_state); + + return ioc_state; +} + +/** + * mpt3sas_halt_firmware - halt's mpt controller firmware + * @ioc: per adapter object + * + * For debugging timeout related issues. Writing 0xCOFFEE00 + * to the doorbell register will halt controller firmware. With + * the purpose to stop both driver and firmware, the enduser can + * obtain a ring buffer from controller UART. + */ +void +mpt3sas_halt_firmware(struct MPT3SAS_ADAPTER *ioc) +{ + u32 doorbell; + + if (!ioc->fwfault_debug) + return; + + dump_stack(); + + doorbell = ioc->base_readl_ext_retry(&ioc->chip->Doorbell); + if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) { + mpt3sas_print_fault_code(ioc, doorbell & + MPI2_DOORBELL_DATA_MASK); + } else if ((doorbell & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_COREDUMP) { + mpt3sas_print_coredump_info(ioc, doorbell & + MPI2_DOORBELL_DATA_MASK); + } else { + writel(0xC0FFEE00, &ioc->chip->Doorbell); + ioc_err(ioc, "Firmware is halted due to command timeout\n"); + } + + if (ioc->fwfault_debug == 2) + for (;;) + ; + else + panic("panic in %s\n", __func__); +} + +/** + * _base_sas_ioc_info - verbose translation of the ioc status + * @ioc: per adapter object + * @mpi_reply: reply mf payload returned from firmware + * @request_hdr: request mf + */ +static void +_base_sas_ioc_info(struct MPT3SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply, + MPI2RequestHeader_t *request_hdr) +{ + u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & + MPI2_IOCSTATUS_MASK; + char *desc = NULL; + u16 frame_sz; + char *func_str = NULL; + + /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */ + if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || + request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || + request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION) + return; + + if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE) + return; + /* + * Older Firmware version doesn't support driver trigger pages. + * So, skip displaying 'config invalid type' type + * of error message. + */ + if (request_hdr->Function == MPI2_FUNCTION_CONFIG) { + Mpi2ConfigRequest_t *rqst = (Mpi2ConfigRequest_t *)request_hdr; + + if ((rqst->ExtPageType == + MPI2_CONFIG_EXTPAGETYPE_DRIVER_PERSISTENT_TRIGGER) && + !(ioc->logging_level & MPT_DEBUG_CONFIG)) { + return; + } + } + + switch (ioc_status) { + +/**************************************************************************** +* Common IOCStatus values for all replies +****************************************************************************/ + + case MPI2_IOCSTATUS_INVALID_FUNCTION: + desc = "invalid function"; + break; + case MPI2_IOCSTATUS_BUSY: + desc = "busy"; + break; + case MPI2_IOCSTATUS_INVALID_SGL: + desc = "invalid sgl"; + break; + case MPI2_IOCSTATUS_INTERNAL_ERROR: + desc = "internal error"; + break; + case MPI2_IOCSTATUS_INVALID_VPID: + desc = "invalid vpid"; + break; + case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES: + desc = "insufficient resources"; + break; + case MPI2_IOCSTATUS_INSUFFICIENT_POWER: + desc = "insufficient power"; + break; + case MPI2_IOCSTATUS_INVALID_FIELD: + desc = "invalid field"; + break; + case MPI2_IOCSTATUS_INVALID_STATE: + desc = "invalid state"; + break; + case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED: + desc = "op state not supported"; + break; + +/**************************************************************************** +* Config IOCStatus values +****************************************************************************/ + + case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION: + desc = "config invalid action"; + break; + case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE: + desc = "config invalid type"; + break; + case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE: + desc = "config invalid page"; + break; + case MPI2_IOCSTATUS_CONFIG_INVALID_DATA: + desc = "config invalid data"; + break; + case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS: + desc = "config no defaults"; + break; + case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT: + desc = "config can't commit"; + break; + +/**************************************************************************** +* SCSI IO Reply +****************************************************************************/ + + case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR: + case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE: + case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE: + case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN: + case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN: + case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR: + case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR: + case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED: + case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH: + case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED: + case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED: + case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED: + break; + +/**************************************************************************** +* For use by SCSI Initiator and SCSI Target end-to-end data protection +****************************************************************************/ + + case MPI2_IOCSTATUS_EEDP_GUARD_ERROR: + desc = "eedp guard error"; + break; + case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR: + desc = "eedp ref tag error"; + break; + case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR: + desc = "eedp app tag error"; + break; + +/**************************************************************************** +* SCSI Target values +****************************************************************************/ + + case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX: + desc = "target invalid io index"; + break; + case MPI2_IOCSTATUS_TARGET_ABORTED: + desc = "target aborted"; + break; + case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE: + desc = "target no conn retryable"; + break; + case MPI2_IOCSTATUS_TARGET_NO_CONNECTION: + desc = "target no connection"; + break; + case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH: + desc = "target xfer count mismatch"; + break; + case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR: + desc = "target data offset error"; + break; + case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA: + desc = "target too much write data"; + break; + case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT: + desc = "target iu too short"; + break; + case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT: + desc = "target ack nak timeout"; + break; + case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED: + desc = "target nak received"; + break; + +/**************************************************************************** +* Serial Attached SCSI values +****************************************************************************/ + + case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED: + desc = "smp request failed"; + break; + case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN: + desc = "smp data overrun"; + break; + +/**************************************************************************** +* Diagnostic Buffer Post / Diagnostic Release values +****************************************************************************/ + + case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED: + desc = "diagnostic released"; + break; + default: + break; + } + + if (!desc) + return; + + switch (request_hdr->Function) { + case MPI2_FUNCTION_CONFIG: + frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size; + func_str = "config_page"; + break; + case MPI2_FUNCTION_SCSI_TASK_MGMT: + frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t); + func_str = "task_mgmt"; + break; + case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL: + frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t); + func_str = "sas_iounit_ctl"; + break; + case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR: + frame_sz = sizeof(Mpi2SepRequest_t); + func_str = "enclosure"; + break; + case MPI2_FUNCTION_IOC_INIT: + frame_sz = sizeof(Mpi2IOCInitRequest_t); + func_str = "ioc_init"; + break; + case MPI2_FUNCTION_PORT_ENABLE: + frame_sz = sizeof(Mpi2PortEnableRequest_t); + func_str = "port_enable"; + break; + case MPI2_FUNCTION_SMP_PASSTHROUGH: + frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size; + func_str = "smp_passthru"; + break; + case MPI2_FUNCTION_NVME_ENCAPSULATED: + frame_sz = sizeof(Mpi26NVMeEncapsulatedRequest_t) + + ioc->sge_size; + func_str = "nvme_encapsulated"; + break; + default: + frame_sz = 32; + func_str = "unknown"; + break; + } + + ioc_warn(ioc, "ioc_status: %s(0x%04x), request(0x%p),(%s)\n", + desc, ioc_status, request_hdr, func_str); + + _debug_dump_mf(request_hdr, frame_sz/4); +} + +/** + * _base_display_event_data - verbose translation of firmware asyn events + * @ioc: per adapter object + * @mpi_reply: reply mf payload returned from firmware + */ +static void +_base_display_event_data(struct MPT3SAS_ADAPTER *ioc, + Mpi2EventNotificationReply_t *mpi_reply) +{ + char *desc = NULL; + u16 event; + + if (!(ioc->logging_level & MPT_DEBUG_EVENTS)) + return; + + event = le16_to_cpu(mpi_reply->Event); + + switch (event) { + case MPI2_EVENT_LOG_DATA: + desc = "Log Data"; + break; + case MPI2_EVENT_STATE_CHANGE: + desc = "Status Change"; + break; + case MPI2_EVENT_HARD_RESET_RECEIVED: + desc = "Hard Reset Received"; + break; + case MPI2_EVENT_EVENT_CHANGE: + desc = "Event Change"; + break; + case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE: + desc = "Device Status Change"; + break; + case MPI2_EVENT_IR_OPERATION_STATUS: + if (!ioc->hide_ir_msg) + desc = "IR Operation Status"; + break; + case MPI2_EVENT_SAS_DISCOVERY: + { + Mpi2EventDataSasDiscovery_t *event_data = + (Mpi2EventDataSasDiscovery_t *)mpi_reply->EventData; + ioc_info(ioc, "Discovery: (%s)", + event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED ? + "start" : "stop"); + if (event_data->DiscoveryStatus) + pr_cont(" discovery_status(0x%08x)", + le32_to_cpu(event_data->DiscoveryStatus)); + pr_cont("\n"); + return; + } + case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE: + desc = "SAS Broadcast Primitive"; + break; + case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE: + desc = "SAS Init Device Status Change"; + break; + case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW: + desc = "SAS Init Table Overflow"; + break; + case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST: + desc = "SAS Topology Change List"; + break; + case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE: + desc = "SAS Enclosure Device Status Change"; + break; + case MPI2_EVENT_IR_VOLUME: + if (!ioc->hide_ir_msg) + desc = "IR Volume"; + break; + case MPI2_EVENT_IR_PHYSICAL_DISK: + if (!ioc->hide_ir_msg) + desc = "IR Physical Disk"; + break; + case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST: + if (!ioc->hide_ir_msg) + desc = "IR Configuration Change List"; + break; + case MPI2_EVENT_LOG_ENTRY_ADDED: + if (!ioc->hide_ir_msg) + desc = "Log Entry Added"; + break; + case MPI2_EVENT_TEMP_THRESHOLD: + desc = "Temperature Threshold"; + break; + case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION: + desc = "Cable Event"; + break; + case MPI2_EVENT_SAS_DEVICE_DISCOVERY_ERROR: + desc = "SAS Device Discovery Error"; + break; + case MPI2_EVENT_PCIE_DEVICE_STATUS_CHANGE: + desc = "PCIE Device Status Change"; + break; + case MPI2_EVENT_PCIE_ENUMERATION: + { + Mpi26EventDataPCIeEnumeration_t *event_data = + (Mpi26EventDataPCIeEnumeration_t *)mpi_reply->EventData; + ioc_info(ioc, "PCIE Enumeration: (%s)", + event_data->ReasonCode == MPI26_EVENT_PCIE_ENUM_RC_STARTED ? + "start" : "stop"); + if (event_data->EnumerationStatus) + pr_cont("enumeration_status(0x%08x)", + le32_to_cpu(event_data->EnumerationStatus)); + pr_cont("\n"); + return; + } + case MPI2_EVENT_PCIE_TOPOLOGY_CHANGE_LIST: + desc = "PCIE Topology Change List"; + break; + } + + if (!desc) + return; + + ioc_info(ioc, "%s\n", desc); +} + +/** + * _base_sas_log_info - verbose translation of firmware log info + * @ioc: per adapter object + * @log_info: log info + */ +static void +_base_sas_log_info(struct MPT3SAS_ADAPTER *ioc, u32 log_info) +{ + union loginfo_type { + u32 loginfo; + struct { + u32 subcode:16; + u32 code:8; + u32 originator:4; + u32 bus_type:4; + } dw; + }; + union loginfo_type sas_loginfo; + char *originator_str = NULL; + + sas_loginfo.loginfo = log_info; + if (sas_loginfo.dw.bus_type != 3 /*SAS*/) + return; + + /* each nexus loss loginfo */ + if (log_info == 0x31170000) + return; + + /* eat the loginfos associated with task aborts */ + if (ioc->ignore_loginfos && (log_info == 0x30050000 || log_info == + 0x31140000 || log_info == 0x31130000)) + return; + + switch (sas_loginfo.dw.originator) { + case 0: + originator_str = "IOP"; + break; + case 1: + originator_str = "PL"; + break; + case 2: + if (!ioc->hide_ir_msg) + originator_str = "IR"; + else + originator_str = "WarpDrive"; + break; + } + + ioc_warn(ioc, "log_info(0x%08x): originator(%s), code(0x%02x), sub_code(0x%04x)\n", + log_info, + originator_str, sas_loginfo.dw.code, sas_loginfo.dw.subcode); +} + +/** + * _base_display_reply_info - handle reply descriptors depending on IOC Status + * @ioc: per adapter object + * @smid: system request message index + * @msix_index: MSIX table index supplied by the OS + * @reply: reply message frame (lower 32bit addr) + */ +static void +_base_display_reply_info(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, + u32 reply) +{ + MPI2DefaultReply_t *mpi_reply; + u16 ioc_status; + u32 loginfo = 0; + + mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); + if (unlikely(!mpi_reply)) { + ioc_err(ioc, "mpi_reply not valid at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + return; + } + ioc_status = le16_to_cpu(mpi_reply->IOCStatus); + + if ((ioc_status & MPI2_IOCSTATUS_MASK) && + (ioc->logging_level & MPT_DEBUG_REPLY)) { + _base_sas_ioc_info(ioc, mpi_reply, + mpt3sas_base_get_msg_frame(ioc, smid)); + } + + if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) { + loginfo = le32_to_cpu(mpi_reply->IOCLogInfo); + _base_sas_log_info(ioc, loginfo); + } + + if (ioc_status || loginfo) { + ioc_status &= MPI2_IOCSTATUS_MASK; + mpt3sas_trigger_mpi(ioc, ioc_status, loginfo); + } +} + +/** + * mpt3sas_base_done - base internal command completion routine + * @ioc: per adapter object + * @smid: system request message index + * @msix_index: MSIX table index supplied by the OS + * @reply: reply message frame(lower 32bit addr) + * + * Return: + * 1 meaning mf should be freed from _base_interrupt + * 0 means the mf is freed from this function. + */ +u8 +mpt3sas_base_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, + u32 reply) +{ + MPI2DefaultReply_t *mpi_reply; + + mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); + if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK) + return mpt3sas_check_for_pending_internal_cmds(ioc, smid); + + if (ioc->base_cmds.status == MPT3_CMD_NOT_USED) + return 1; + + ioc->base_cmds.status |= MPT3_CMD_COMPLETE; + if (mpi_reply) { + ioc->base_cmds.status |= MPT3_CMD_REPLY_VALID; + memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4); + } + ioc->base_cmds.status &= ~MPT3_CMD_PENDING; + + complete(&ioc->base_cmds.done); + return 1; +} + +/** + * _base_async_event - main callback handler for firmware asyn events + * @ioc: per adapter object + * @msix_index: MSIX table index supplied by the OS + * @reply: reply message frame(lower 32bit addr) + * + * Return: + * 1 meaning mf should be freed from _base_interrupt + * 0 means the mf is freed from this function. + */ +static u8 +_base_async_event(struct MPT3SAS_ADAPTER *ioc, u8 msix_index, u32 reply) +{ + Mpi2EventNotificationReply_t *mpi_reply; + Mpi2EventAckRequest_t *ack_request; + u16 smid; + struct _event_ack_list *delayed_event_ack; + + mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); + if (!mpi_reply) + return 1; + if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION) + return 1; + + _base_display_event_data(ioc, mpi_reply); + + if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED)) + goto out; + smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx); + if (!smid) { + delayed_event_ack = kzalloc(sizeof(*delayed_event_ack), + GFP_ATOMIC); + if (!delayed_event_ack) + goto out; + INIT_LIST_HEAD(&delayed_event_ack->list); + delayed_event_ack->Event = mpi_reply->Event; + delayed_event_ack->EventContext = mpi_reply->EventContext; + list_add_tail(&delayed_event_ack->list, + &ioc->delayed_event_ack_list); + dewtprintk(ioc, + ioc_info(ioc, "DELAYED: EVENT ACK: event (0x%04x)\n", + le16_to_cpu(mpi_reply->Event))); + goto out; + } + + ack_request = mpt3sas_base_get_msg_frame(ioc, smid); + memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t)); + ack_request->Function = MPI2_FUNCTION_EVENT_ACK; + ack_request->Event = mpi_reply->Event; + ack_request->EventContext = mpi_reply->EventContext; + ack_request->VF_ID = 0; /* TODO */ + ack_request->VP_ID = 0; + ioc->put_smid_default(ioc, smid); + + out: + + /* scsih callback handler */ + mpt3sas_scsih_event_callback(ioc, msix_index, reply); + + /* ctl callback handler */ + mpt3sas_ctl_event_callback(ioc, msix_index, reply); + + return 1; +} + +static struct scsiio_tracker * +_get_st_from_smid(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + struct scsi_cmnd *cmd; + + if (WARN_ON(!smid) || + WARN_ON(smid >= ioc->hi_priority_smid)) + return NULL; + + cmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid); + if (cmd) + return scsi_cmd_priv(cmd); + + return NULL; +} + +/** + * _base_get_cb_idx - obtain the callback index + * @ioc: per adapter object + * @smid: system request message index + * + * Return: callback index. + */ +static u8 +_base_get_cb_idx(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + int i; + u16 ctl_smid = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT + 1; + u8 cb_idx = 0xFF; + + if (smid < ioc->hi_priority_smid) { + struct scsiio_tracker *st; + + if (smid < ctl_smid) { + st = _get_st_from_smid(ioc, smid); + if (st) + cb_idx = st->cb_idx; + } else if (smid == ctl_smid) + cb_idx = ioc->ctl_cb_idx; + } else if (smid < ioc->internal_smid) { + i = smid - ioc->hi_priority_smid; + cb_idx = ioc->hpr_lookup[i].cb_idx; + } else if (smid <= ioc->hba_queue_depth) { + i = smid - ioc->internal_smid; + cb_idx = ioc->internal_lookup[i].cb_idx; + } + return cb_idx; +} + +/** + * mpt3sas_base_pause_mq_polling - pause polling on the mq poll queues + * when driver is flushing out the IOs. + * @ioc: per adapter object + * + * Pause polling on the mq poll (io uring) queues when driver is flushing + * out the IOs. Otherwise we may see the race condition of completing the same + * IO from two paths. + * + * Returns nothing. + */ +void +mpt3sas_base_pause_mq_polling(struct MPT3SAS_ADAPTER *ioc) +{ + int iopoll_q_count = + ioc->reply_queue_count - ioc->iopoll_q_start_index; + int qid; + + for (qid = 0; qid < iopoll_q_count; qid++) + atomic_set(&ioc->io_uring_poll_queues[qid].pause, 1); + + /* + * wait for current poll to complete. + */ + for (qid = 0; qid < iopoll_q_count; qid++) { + while (atomic_read(&ioc->io_uring_poll_queues[qid].busy)) { + cpu_relax(); + udelay(500); + } + } +} + +/** + * mpt3sas_base_resume_mq_polling - Resume polling on mq poll queues. + * @ioc: per adapter object + * + * Returns nothing. + */ +void +mpt3sas_base_resume_mq_polling(struct MPT3SAS_ADAPTER *ioc) +{ + int iopoll_q_count = + ioc->reply_queue_count - ioc->iopoll_q_start_index; + int qid; + + for (qid = 0; qid < iopoll_q_count; qid++) + atomic_set(&ioc->io_uring_poll_queues[qid].pause, 0); +} + +/** + * mpt3sas_base_mask_interrupts - disable interrupts + * @ioc: per adapter object + * + * Disabling ResetIRQ, Reply and Doorbell Interrupts + */ +void +mpt3sas_base_mask_interrupts(struct MPT3SAS_ADAPTER *ioc) +{ + u32 him_register; + + ioc->mask_interrupts = 1; + him_register = ioc->base_readl(&ioc->chip->HostInterruptMask); + him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK; + writel(him_register, &ioc->chip->HostInterruptMask); + ioc->base_readl(&ioc->chip->HostInterruptMask); +} + +/** + * mpt3sas_base_unmask_interrupts - enable interrupts + * @ioc: per adapter object + * + * Enabling only Reply Interrupts + */ +void +mpt3sas_base_unmask_interrupts(struct MPT3SAS_ADAPTER *ioc) +{ + u32 him_register; + + him_register = ioc->base_readl(&ioc->chip->HostInterruptMask); + him_register &= ~MPI2_HIM_RIM; + writel(him_register, &ioc->chip->HostInterruptMask); + ioc->mask_interrupts = 0; +} + +union reply_descriptor { + u64 word; + struct { + u32 low; + u32 high; + } u; +}; + +static u32 base_mod64(u64 dividend, u32 divisor) +{ + u32 remainder; + + if (!divisor) + pr_err("mpt3sas: DIVISOR is zero, in div fn\n"); + remainder = do_div(dividend, divisor); + return remainder; +} + +/** + * _base_process_reply_queue - Process reply descriptors from reply + * descriptor post queue. + * @reply_q: per IRQ's reply queue object. + * + * Return: number of reply descriptors processed from reply + * descriptor queue. + */ +static int +_base_process_reply_queue(struct adapter_reply_queue *reply_q) +{ + union reply_descriptor rd; + u64 completed_cmds; + u8 request_descript_type; + u16 smid; + u8 cb_idx; + u32 reply; + u8 msix_index = reply_q->msix_index; + struct MPT3SAS_ADAPTER *ioc = reply_q->ioc; + Mpi2ReplyDescriptorsUnion_t *rpf; + u8 rc; + + completed_cmds = 0; + if (!atomic_add_unless(&reply_q->busy, 1, 1)) + return completed_cmds; + + rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index]; + request_descript_type = rpf->Default.ReplyFlags + & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + if (request_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) { + atomic_dec(&reply_q->busy); + return completed_cmds; + } + + cb_idx = 0xFF; + do { + rd.word = le64_to_cpu(rpf->Words); + if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX) + goto out; + reply = 0; + smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1); + if (request_descript_type == + MPI25_RPY_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO_SUCCESS || + request_descript_type == + MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS || + request_descript_type == + MPI26_RPY_DESCRIPT_FLAGS_PCIE_ENCAPSULATED_SUCCESS) { + cb_idx = _base_get_cb_idx(ioc, smid); + if ((likely(cb_idx < MPT_MAX_CALLBACKS)) && + (likely(mpt_callbacks[cb_idx] != NULL))) { + rc = mpt_callbacks[cb_idx](ioc, smid, + msix_index, 0); + if (rc) + mpt3sas_base_free_smid(ioc, smid); + } + } else if (request_descript_type == + MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) { + reply = le32_to_cpu( + rpf->AddressReply.ReplyFrameAddress); + if (reply > ioc->reply_dma_max_address || + reply < ioc->reply_dma_min_address) + reply = 0; + if (smid) { + cb_idx = _base_get_cb_idx(ioc, smid); + if ((likely(cb_idx < MPT_MAX_CALLBACKS)) && + (likely(mpt_callbacks[cb_idx] != NULL))) { + rc = mpt_callbacks[cb_idx](ioc, smid, + msix_index, reply); + if (reply) + _base_display_reply_info(ioc, + smid, msix_index, reply); + if (rc) + mpt3sas_base_free_smid(ioc, + smid); + } + } else { + _base_async_event(ioc, msix_index, reply); + } + + /* reply free queue handling */ + if (reply) { + ioc->reply_free_host_index = + (ioc->reply_free_host_index == + (ioc->reply_free_queue_depth - 1)) ? + 0 : ioc->reply_free_host_index + 1; + ioc->reply_free[ioc->reply_free_host_index] = + cpu_to_le32(reply); + if (ioc->is_mcpu_endpoint) + _base_clone_reply_to_sys_mem(ioc, + reply, + ioc->reply_free_host_index); + writel(ioc->reply_free_host_index, + &ioc->chip->ReplyFreeHostIndex); + } + } + + rpf->Words = cpu_to_le64(ULLONG_MAX); + reply_q->reply_post_host_index = + (reply_q->reply_post_host_index == + (ioc->reply_post_queue_depth - 1)) ? 0 : + reply_q->reply_post_host_index + 1; + request_descript_type = + reply_q->reply_post_free[reply_q->reply_post_host_index]. + Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; + completed_cmds++; + /* Update the reply post host index after continuously + * processing the threshold number of Reply Descriptors. + * So that FW can find enough entries to post the Reply + * Descriptors in the reply descriptor post queue. + */ + if (completed_cmds >= ioc->thresh_hold) { + if (ioc->combined_reply_queue) { + writel(reply_q->reply_post_host_index | + ((msix_index & 7) << + MPI2_RPHI_MSIX_INDEX_SHIFT), + ioc->replyPostRegisterIndex[msix_index/8]); + } else { + writel(reply_q->reply_post_host_index | + (msix_index << + MPI2_RPHI_MSIX_INDEX_SHIFT), + &ioc->chip->ReplyPostHostIndex); + } + if (!reply_q->is_iouring_poll_q && + !reply_q->irq_poll_scheduled) { + reply_q->irq_poll_scheduled = true; + irq_poll_sched(&reply_q->irqpoll); + } + atomic_dec(&reply_q->busy); + return completed_cmds; + } + if (request_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) + goto out; + if (!reply_q->reply_post_host_index) + rpf = reply_q->reply_post_free; + else + rpf++; + } while (1); + + out: + + if (!completed_cmds) { + atomic_dec(&reply_q->busy); + return completed_cmds; + } + + if (ioc->is_warpdrive) { + writel(reply_q->reply_post_host_index, + ioc->reply_post_host_index[msix_index]); + atomic_dec(&reply_q->busy); + return completed_cmds; + } + + /* Update Reply Post Host Index. + * For those HBA's which support combined reply queue feature + * 1. Get the correct Supplemental Reply Post Host Index Register. + * i.e. (msix_index / 8)th entry from Supplemental Reply Post Host + * Index Register address bank i.e replyPostRegisterIndex[], + * 2. Then update this register with new reply host index value + * in ReplyPostIndex field and the MSIxIndex field with + * msix_index value reduced to a value between 0 and 7, + * using a modulo 8 operation. Since each Supplemental Reply Post + * Host Index Register supports 8 MSI-X vectors. + * + * For other HBA's just update the Reply Post Host Index register with + * new reply host index value in ReplyPostIndex Field and msix_index + * value in MSIxIndex field. + */ + if (ioc->combined_reply_queue) + writel(reply_q->reply_post_host_index | ((msix_index & 7) << + MPI2_RPHI_MSIX_INDEX_SHIFT), + ioc->replyPostRegisterIndex[msix_index/8]); + else + writel(reply_q->reply_post_host_index | (msix_index << + MPI2_RPHI_MSIX_INDEX_SHIFT), + &ioc->chip->ReplyPostHostIndex); + atomic_dec(&reply_q->busy); + return completed_cmds; +} + +/** + * mpt3sas_blk_mq_poll - poll the blk mq poll queue + * @shost: Scsi_Host object + * @queue_num: hw ctx queue number + * + * Return number of entries that has been processed from poll queue. + */ +int mpt3sas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) +{ + struct MPT3SAS_ADAPTER *ioc = + (struct MPT3SAS_ADAPTER *)shost->hostdata; + struct adapter_reply_queue *reply_q; + int num_entries = 0; + int qid = queue_num - ioc->iopoll_q_start_index; + + if (atomic_read(&ioc->io_uring_poll_queues[qid].pause) || + !atomic_add_unless(&ioc->io_uring_poll_queues[qid].busy, 1, 1)) + return 0; + + reply_q = ioc->io_uring_poll_queues[qid].reply_q; + + num_entries = _base_process_reply_queue(reply_q); + atomic_dec(&ioc->io_uring_poll_queues[qid].busy); + + return num_entries; +} + +/** + * _base_interrupt - MPT adapter (IOC) specific interrupt handler. + * @irq: irq number (not used) + * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure + * + * Return: IRQ_HANDLED if processed, else IRQ_NONE. + */ +static irqreturn_t +_base_interrupt(int irq, void *bus_id) +{ + struct adapter_reply_queue *reply_q = bus_id; + struct MPT3SAS_ADAPTER *ioc = reply_q->ioc; + + if (ioc->mask_interrupts) + return IRQ_NONE; + if (reply_q->irq_poll_scheduled) + return IRQ_HANDLED; + return ((_base_process_reply_queue(reply_q) > 0) ? + IRQ_HANDLED : IRQ_NONE); +} + +/** + * _base_irqpoll - IRQ poll callback handler + * @irqpoll: irq_poll object + * @budget: irq poll weight + * + * Return: number of reply descriptors processed + */ +static int +_base_irqpoll(struct irq_poll *irqpoll, int budget) +{ + struct adapter_reply_queue *reply_q; + int num_entries = 0; + + reply_q = container_of(irqpoll, struct adapter_reply_queue, + irqpoll); + if (reply_q->irq_line_enable) { + disable_irq_nosync(reply_q->os_irq); + reply_q->irq_line_enable = false; + } + num_entries = _base_process_reply_queue(reply_q); + if (num_entries < budget) { + irq_poll_complete(irqpoll); + reply_q->irq_poll_scheduled = false; + reply_q->irq_line_enable = true; + enable_irq(reply_q->os_irq); + /* + * Go for one more round of processing the + * reply descriptor post queue in case the HBA + * Firmware has posted some reply descriptors + * while reenabling the IRQ. + */ + _base_process_reply_queue(reply_q); + } + + return num_entries; +} + +/** + * _base_init_irqpolls - initliaze IRQ polls + * @ioc: per adapter object + * + * Return: nothing + */ +static void +_base_init_irqpolls(struct MPT3SAS_ADAPTER *ioc) +{ + struct adapter_reply_queue *reply_q, *next; + + if (list_empty(&ioc->reply_queue_list)) + return; + + list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) { + if (reply_q->is_iouring_poll_q) + continue; + irq_poll_init(&reply_q->irqpoll, + ioc->hba_queue_depth/4, _base_irqpoll); + reply_q->irq_poll_scheduled = false; + reply_q->irq_line_enable = true; + reply_q->os_irq = pci_irq_vector(ioc->pdev, + reply_q->msix_index); + } +} + +/** + * _base_is_controller_msix_enabled - is controller support muli-reply queues + * @ioc: per adapter object + * + * Return: Whether or not MSI/X is enabled. + */ +static inline int +_base_is_controller_msix_enabled(struct MPT3SAS_ADAPTER *ioc) +{ + return (ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable; +} + +/** + * mpt3sas_base_sync_reply_irqs - flush pending MSIX interrupts + * @ioc: per adapter object + * @poll: poll over reply descriptor pools incase interrupt for + * timed-out SCSI command got delayed + * Context: non-ISR context + * + * Called when a Task Management request has completed. + */ +void +mpt3sas_base_sync_reply_irqs(struct MPT3SAS_ADAPTER *ioc, u8 poll) +{ + struct adapter_reply_queue *reply_q; + + /* If MSIX capability is turned off + * then multi-queues are not enabled + */ + if (!_base_is_controller_msix_enabled(ioc)) + return; + + list_for_each_entry(reply_q, &ioc->reply_queue_list, list) { + if (ioc->shost_recovery || ioc->remove_host || + ioc->pci_error_recovery) + return; + /* TMs are on msix_index == 0 */ + if (reply_q->msix_index == 0) + continue; + + if (reply_q->is_iouring_poll_q) { + _base_process_reply_queue(reply_q); + continue; + } + + synchronize_irq(pci_irq_vector(ioc->pdev, reply_q->msix_index)); + if (reply_q->irq_poll_scheduled) { + /* Calling irq_poll_disable will wait for any pending + * callbacks to have completed. + */ + irq_poll_disable(&reply_q->irqpoll); + irq_poll_enable(&reply_q->irqpoll); + /* check how the scheduled poll has ended, + * clean up only if necessary + */ + if (reply_q->irq_poll_scheduled) { + reply_q->irq_poll_scheduled = false; + reply_q->irq_line_enable = true; + enable_irq(reply_q->os_irq); + } + } + + if (poll) + _base_process_reply_queue(reply_q); + } +} + +/** + * mpt3sas_base_release_callback_handler - clear interrupt callback handler + * @cb_idx: callback index + */ +void +mpt3sas_base_release_callback_handler(u8 cb_idx) +{ + mpt_callbacks[cb_idx] = NULL; +} + +/** + * mpt3sas_base_register_callback_handler - obtain index for the interrupt callback handler + * @cb_func: callback function + * + * Return: Index of @cb_func. + */ +u8 +mpt3sas_base_register_callback_handler(MPT_CALLBACK cb_func) +{ + u8 cb_idx; + + for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--) + if (mpt_callbacks[cb_idx] == NULL) + break; + + mpt_callbacks[cb_idx] = cb_func; + return cb_idx; +} + +/** + * mpt3sas_base_initialize_callback_handler - initialize the interrupt callback handler + */ +void +mpt3sas_base_initialize_callback_handler(void) +{ + u8 cb_idx; + + for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++) + mpt3sas_base_release_callback_handler(cb_idx); +} + + +/** + * _base_build_zero_len_sge - build zero length sg entry + * @ioc: per adapter object + * @paddr: virtual address for SGE + * + * Create a zero length scatter gather entry to insure the IOCs hardware has + * something to use if the target device goes brain dead and tries + * to send data even when none is asked for. + */ +static void +_base_build_zero_len_sge(struct MPT3SAS_ADAPTER *ioc, void *paddr) +{ + u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT | + MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST | + MPI2_SGE_FLAGS_SIMPLE_ELEMENT) << + MPI2_SGE_FLAGS_SHIFT); + ioc->base_add_sg_single(paddr, flags_length, -1); +} + +/** + * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr. + * @paddr: virtual address for SGE + * @flags_length: SGE flags and data transfer length + * @dma_addr: Physical address + */ +static void +_base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr) +{ + Mpi2SGESimple32_t *sgel = paddr; + + flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING | + MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT; + sgel->FlagsLength = cpu_to_le32(flags_length); + sgel->Address = cpu_to_le32(dma_addr); +} + + +/** + * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr. + * @paddr: virtual address for SGE + * @flags_length: SGE flags and data transfer length + * @dma_addr: Physical address + */ +static void +_base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr) +{ + Mpi2SGESimple64_t *sgel = paddr; + + flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING | + MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT; + sgel->FlagsLength = cpu_to_le32(flags_length); + sgel->Address = cpu_to_le64(dma_addr); +} + +/** + * _base_get_chain_buffer_tracker - obtain chain tracker + * @ioc: per adapter object + * @scmd: SCSI commands of the IO request + * + * Return: chain tracker from chain_lookup table using key as + * smid and smid's chain_offset. + */ +static struct chain_tracker * +_base_get_chain_buffer_tracker(struct MPT3SAS_ADAPTER *ioc, + struct scsi_cmnd *scmd) +{ + struct chain_tracker *chain_req; + struct scsiio_tracker *st = scsi_cmd_priv(scmd); + u16 smid = st->smid; + u8 chain_offset = + atomic_read(&ioc->chain_lookup[smid - 1].chain_offset); + + if (chain_offset == ioc->chains_needed_per_io) + return NULL; + + chain_req = &ioc->chain_lookup[smid - 1].chains_per_smid[chain_offset]; + atomic_inc(&ioc->chain_lookup[smid - 1].chain_offset); + return chain_req; +} + + +/** + * _base_build_sg - build generic sg + * @ioc: per adapter object + * @psge: virtual address for SGE + * @data_out_dma: physical address for WRITES + * @data_out_sz: data xfer size for WRITES + * @data_in_dma: physical address for READS + * @data_in_sz: data xfer size for READS + */ +static void +_base_build_sg(struct MPT3SAS_ADAPTER *ioc, void *psge, + dma_addr_t data_out_dma, size_t data_out_sz, dma_addr_t data_in_dma, + size_t data_in_sz) +{ + u32 sgl_flags; + + if (!data_out_sz && !data_in_sz) { + _base_build_zero_len_sge(ioc, psge); + return; + } + + if (data_out_sz && data_in_sz) { + /* WRITE sgel first */ + sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | + MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC); + sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; + ioc->base_add_sg_single(psge, sgl_flags | + data_out_sz, data_out_dma); + + /* incr sgel */ + psge += ioc->sge_size; + + /* READ sgel last */ + sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | + MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | + MPI2_SGE_FLAGS_END_OF_LIST); + sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; + ioc->base_add_sg_single(psge, sgl_flags | + data_in_sz, data_in_dma); + } else if (data_out_sz) /* WRITE */ { + sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | + MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | + MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC); + sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; + ioc->base_add_sg_single(psge, sgl_flags | + data_out_sz, data_out_dma); + } else if (data_in_sz) /* READ */ { + sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | + MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | + MPI2_SGE_FLAGS_END_OF_LIST); + sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; + ioc->base_add_sg_single(psge, sgl_flags | + data_in_sz, data_in_dma); + } +} + +/* IEEE format sgls */ + +/** + * _base_build_nvme_prp - This function is called for NVMe end devices to build + * a native SGL (NVMe PRP). + * @ioc: per adapter object + * @smid: system request message index for getting asscociated SGL + * @nvme_encap_request: the NVMe request msg frame pointer + * @data_out_dma: physical address for WRITES + * @data_out_sz: data xfer size for WRITES + * @data_in_dma: physical address for READS + * @data_in_sz: data xfer size for READS + * + * The native SGL is built starting in the first PRP + * entry of the NVMe message (PRP1). If the data buffer is small enough to be + * described entirely using PRP1, then PRP2 is not used. If needed, PRP2 is + * used to describe a larger data buffer. If the data buffer is too large to + * describe using the two PRP entriess inside the NVMe message, then PRP1 + * describes the first data memory segment, and PRP2 contains a pointer to a PRP + * list located elsewhere in memory to describe the remaining data memory + * segments. The PRP list will be contiguous. + * + * The native SGL for NVMe devices is a Physical Region Page (PRP). A PRP + * consists of a list of PRP entries to describe a number of noncontigous + * physical memory segments as a single memory buffer, just as a SGL does. Note + * however, that this function is only used by the IOCTL call, so the memory + * given will be guaranteed to be contiguous. There is no need to translate + * non-contiguous SGL into a PRP in this case. All PRPs will describe + * contiguous space that is one page size each. + * + * Each NVMe message contains two PRP entries. The first (PRP1) either contains + * a PRP list pointer or a PRP element, depending upon the command. PRP2 + * contains the second PRP element if the memory being described fits within 2 + * PRP entries, or a PRP list pointer if the PRP spans more than two entries. + * + * A PRP list pointer contains the address of a PRP list, structured as a linear + * array of PRP entries. Each PRP entry in this list describes a segment of + * physical memory. + * + * Each 64-bit PRP entry comprises an address and an offset field. The address + * always points at the beginning of a 4KB physical memory page, and the offset + * describes where within that 4KB page the memory segment begins. Only the + * first element in a PRP list may contain a non-zero offset, implying that all + * memory segments following the first begin at the start of a 4KB page. + * + * Each PRP element normally describes 4KB of physical memory, with exceptions + * for the first and last elements in the list. If the memory being described + * by the list begins at a non-zero offset within the first 4KB page, then the + * first PRP element will contain a non-zero offset indicating where the region + * begins within the 4KB page. The last memory segment may end before the end + * of the 4KB segment, depending upon the overall size of the memory being + * described by the PRP list. + * + * Since PRP entries lack any indication of size, the overall data buffer length + * is used to determine where the end of the data memory buffer is located, and + * how many PRP entries are required to describe it. + */ +static void +_base_build_nvme_prp(struct MPT3SAS_ADAPTER *ioc, u16 smid, + Mpi26NVMeEncapsulatedRequest_t *nvme_encap_request, + dma_addr_t data_out_dma, size_t data_out_sz, dma_addr_t data_in_dma, + size_t data_in_sz) +{ + int prp_size = NVME_PRP_SIZE; + __le64 *prp_entry, *prp1_entry, *prp2_entry; + __le64 *prp_page; + dma_addr_t prp_entry_dma, prp_page_dma, dma_addr; + u32 offset, entry_len; + u32 page_mask_result, page_mask; + size_t length; + struct mpt3sas_nvme_cmd *nvme_cmd = + (void *)nvme_encap_request->NVMe_Command; + + /* + * Not all commands require a data transfer. If no data, just return + * without constructing any PRP. + */ + if (!data_in_sz && !data_out_sz) + return; + prp1_entry = &nvme_cmd->prp1; + prp2_entry = &nvme_cmd->prp2; + prp_entry = prp1_entry; + /* + * For the PRP entries, use the specially allocated buffer of + * contiguous memory. + */ + prp_page = (__le64 *)mpt3sas_base_get_pcie_sgl(ioc, smid); + prp_page_dma = mpt3sas_base_get_pcie_sgl_dma(ioc, smid); + + /* + * Check if we are within 1 entry of a page boundary we don't + * want our first entry to be a PRP List entry. + */ + page_mask = ioc->page_size - 1; + page_mask_result = (uintptr_t)((u8 *)prp_page + prp_size) & page_mask; + if (!page_mask_result) { + /* Bump up to next page boundary. */ + prp_page = (__le64 *)((u8 *)prp_page + prp_size); + prp_page_dma = prp_page_dma + prp_size; + } + + /* + * Set PRP physical pointer, which initially points to the current PRP + * DMA memory page. + */ + prp_entry_dma = prp_page_dma; + + /* Get physical address and length of the data buffer. */ + if (data_in_sz) { + dma_addr = data_in_dma; + length = data_in_sz; + } else { + dma_addr = data_out_dma; + length = data_out_sz; + } + + /* Loop while the length is not zero. */ + while (length) { + /* + * Check if we need to put a list pointer here if we are at + * page boundary - prp_size (8 bytes). + */ + page_mask_result = (prp_entry_dma + prp_size) & page_mask; + if (!page_mask_result) { + /* + * This is the last entry in a PRP List, so we need to + * put a PRP list pointer here. What this does is: + * - bump the current memory pointer to the next + * address, which will be the next full page. + * - set the PRP Entry to point to that page. This + * is now the PRP List pointer. + * - bump the PRP Entry pointer the start of the + * next page. Since all of this PRP memory is + * contiguous, no need to get a new page - it's + * just the next address. + */ + prp_entry_dma++; + *prp_entry = cpu_to_le64(prp_entry_dma); + prp_entry++; + } + + /* Need to handle if entry will be part of a page. */ + offset = dma_addr & page_mask; + entry_len = ioc->page_size - offset; + + if (prp_entry == prp1_entry) { + /* + * Must fill in the first PRP pointer (PRP1) before + * moving on. + */ + *prp1_entry = cpu_to_le64(dma_addr); + + /* + * Now point to the second PRP entry within the + * command (PRP2). + */ + prp_entry = prp2_entry; + } else if (prp_entry == prp2_entry) { + /* + * Should the PRP2 entry be a PRP List pointer or just + * a regular PRP pointer? If there is more than one + * more page of data, must use a PRP List pointer. + */ + if (length > ioc->page_size) { + /* + * PRP2 will contain a PRP List pointer because + * more PRP's are needed with this command. The + * list will start at the beginning of the + * contiguous buffer. + */ + *prp2_entry = cpu_to_le64(prp_entry_dma); + + /* + * The next PRP Entry will be the start of the + * first PRP List. + */ + prp_entry = prp_page; + } else { + /* + * After this, the PRP Entries are complete. + * This command uses 2 PRP's and no PRP list. + */ + *prp2_entry = cpu_to_le64(dma_addr); + } + } else { + /* + * Put entry in list and bump the addresses. + * + * After PRP1 and PRP2 are filled in, this will fill in + * all remaining PRP entries in a PRP List, one per + * each time through the loop. + */ + *prp_entry = cpu_to_le64(dma_addr); + prp_entry++; + prp_entry_dma++; + } + + /* + * Bump the phys address of the command's data buffer by the + * entry_len. + */ + dma_addr += entry_len; + + /* Decrement length accounting for last partial page. */ + if (entry_len > length) + length = 0; + else + length -= entry_len; + } +} + +/** + * base_make_prp_nvme - Prepare PRPs (Physical Region Page) - + * SGLs specific to NVMe drives only + * + * @ioc: per adapter object + * @scmd: SCSI command from the mid-layer + * @mpi_request: mpi request + * @smid: msg Index + * @sge_count: scatter gather element count. + * + * Return: true: PRPs are built + * false: IEEE SGLs needs to be built + */ +static void +base_make_prp_nvme(struct MPT3SAS_ADAPTER *ioc, + struct scsi_cmnd *scmd, + Mpi25SCSIIORequest_t *mpi_request, + u16 smid, int sge_count) +{ + int sge_len, num_prp_in_chain = 0; + Mpi25IeeeSgeChain64_t *main_chain_element, *ptr_first_sgl; + __le64 *curr_buff; + dma_addr_t msg_dma, sge_addr, offset; + u32 page_mask, page_mask_result; + struct scatterlist *sg_scmd; + u32 first_prp_len; + int data_len = scsi_bufflen(scmd); + u32 nvme_pg_size; + + nvme_pg_size = max_t(u32, ioc->page_size, NVME_PRP_PAGE_SIZE); + /* + * Nvme has a very convoluted prp format. One prp is required + * for each page or partial page. Driver need to split up OS sg_list + * entries if it is longer than one page or cross a page + * boundary. Driver also have to insert a PRP list pointer entry as + * the last entry in each physical page of the PRP list. + * + * NOTE: The first PRP "entry" is actually placed in the first + * SGL entry in the main message as IEEE 64 format. The 2nd + * entry in the main message is the chain element, and the rest + * of the PRP entries are built in the contiguous pcie buffer. + */ + page_mask = nvme_pg_size - 1; + + /* + * Native SGL is needed. + * Put a chain element in main message frame that points to the first + * chain buffer. + * + * NOTE: The ChainOffset field must be 0 when using a chain pointer to + * a native SGL. + */ + + /* Set main message chain element pointer */ + main_chain_element = (pMpi25IeeeSgeChain64_t)&mpi_request->SGL; + /* + * For NVMe the chain element needs to be the 2nd SG entry in the main + * message. + */ + main_chain_element = (Mpi25IeeeSgeChain64_t *) + ((u8 *)main_chain_element + sizeof(MPI25_IEEE_SGE_CHAIN64)); + + /* + * For the PRP entries, use the specially allocated buffer of + * contiguous memory. Normal chain buffers can't be used + * because each chain buffer would need to be the size of an OS + * page (4k). + */ + curr_buff = mpt3sas_base_get_pcie_sgl(ioc, smid); + msg_dma = mpt3sas_base_get_pcie_sgl_dma(ioc, smid); + + main_chain_element->Address = cpu_to_le64(msg_dma); + main_chain_element->NextChainOffset = 0; + main_chain_element->Flags = MPI2_IEEE_SGE_FLAGS_CHAIN_ELEMENT | + MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR | + MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; + + /* Build first prp, sge need not to be page aligned*/ + ptr_first_sgl = (pMpi25IeeeSgeChain64_t)&mpi_request->SGL; + sg_scmd = scsi_sglist(scmd); + sge_addr = sg_dma_address(sg_scmd); + sge_len = sg_dma_len(sg_scmd); + + offset = sge_addr & page_mask; + first_prp_len = nvme_pg_size - offset; + + ptr_first_sgl->Address = cpu_to_le64(sge_addr); + ptr_first_sgl->Length = cpu_to_le32(first_prp_len); + + data_len -= first_prp_len; + + if (sge_len > first_prp_len) { + sge_addr += first_prp_len; + sge_len -= first_prp_len; + } else if (data_len && (sge_len == first_prp_len)) { + sg_scmd = sg_next(sg_scmd); + sge_addr = sg_dma_address(sg_scmd); + sge_len = sg_dma_len(sg_scmd); + } + + for (;;) { + offset = sge_addr & page_mask; + + /* Put PRP pointer due to page boundary*/ + page_mask_result = (uintptr_t)(curr_buff + 1) & page_mask; + if (unlikely(!page_mask_result)) { + scmd_printk(KERN_NOTICE, + scmd, "page boundary curr_buff: 0x%p\n", + curr_buff); + msg_dma += 8; + *curr_buff = cpu_to_le64(msg_dma); + curr_buff++; + num_prp_in_chain++; + } + + *curr_buff = cpu_to_le64(sge_addr); + curr_buff++; + msg_dma += 8; + num_prp_in_chain++; + + sge_addr += nvme_pg_size; + sge_len -= nvme_pg_size; + data_len -= nvme_pg_size; + + if (data_len <= 0) + break; + + if (sge_len > 0) + continue; + + sg_scmd = sg_next(sg_scmd); + sge_addr = sg_dma_address(sg_scmd); + sge_len = sg_dma_len(sg_scmd); + } + + main_chain_element->Length = + cpu_to_le32(num_prp_in_chain * sizeof(u64)); + return; +} + +static bool +base_is_prp_possible(struct MPT3SAS_ADAPTER *ioc, + struct _pcie_device *pcie_device, struct scsi_cmnd *scmd, int sge_count) +{ + u32 data_length = 0; + bool build_prp = true; + + data_length = scsi_bufflen(scmd); + if (pcie_device && + (mpt3sas_scsih_is_pcie_scsi_device(pcie_device->device_info))) { + build_prp = false; + return build_prp; + } + + /* If Datalenth is <= 16K and number of SGE’s entries are <= 2 + * we built IEEE SGL + */ + if ((data_length <= NVME_PRP_PAGE_SIZE*4) && (sge_count <= 2)) + build_prp = false; + + return build_prp; +} + +/** + * _base_check_pcie_native_sgl - This function is called for PCIe end devices to + * determine if the driver needs to build a native SGL. If so, that native + * SGL is built in the special contiguous buffers allocated especially for + * PCIe SGL creation. If the driver will not build a native SGL, return + * TRUE and a normal IEEE SGL will be built. Currently this routine + * supports NVMe. + * @ioc: per adapter object + * @mpi_request: mf request pointer + * @smid: system request message index + * @scmd: scsi command + * @pcie_device: points to the PCIe device's info + * + * Return: 0 if native SGL was built, 1 if no SGL was built + */ +static int +_base_check_pcie_native_sgl(struct MPT3SAS_ADAPTER *ioc, + Mpi25SCSIIORequest_t *mpi_request, u16 smid, struct scsi_cmnd *scmd, + struct _pcie_device *pcie_device) +{ + int sges_left; + + /* Get the SG list pointer and info. */ + sges_left = scsi_dma_map(scmd); + if (sges_left < 0) + return 1; + + /* Check if we need to build a native SG list. */ + if (!base_is_prp_possible(ioc, pcie_device, + scmd, sges_left)) { + /* We built a native SG list, just return. */ + goto out; + } + + /* + * Build native NVMe PRP. + */ + base_make_prp_nvme(ioc, scmd, mpi_request, + smid, sges_left); + + return 0; +out: + scsi_dma_unmap(scmd); + return 1; +} + +/** + * _base_add_sg_single_ieee - add sg element for IEEE format + * @paddr: virtual address for SGE + * @flags: SGE flags + * @chain_offset: number of 128 byte elements from start of segment + * @length: data transfer length + * @dma_addr: Physical address + */ +static void +_base_add_sg_single_ieee(void *paddr, u8 flags, u8 chain_offset, u32 length, + dma_addr_t dma_addr) +{ + Mpi25IeeeSgeChain64_t *sgel = paddr; + + sgel->Flags = flags; + sgel->NextChainOffset = chain_offset; + sgel->Length = cpu_to_le32(length); + sgel->Address = cpu_to_le64(dma_addr); +} + +/** + * _base_build_zero_len_sge_ieee - build zero length sg entry for IEEE format + * @ioc: per adapter object + * @paddr: virtual address for SGE + * + * Create a zero length scatter gather entry to insure the IOCs hardware has + * something to use if the target device goes brain dead and tries + * to send data even when none is asked for. + */ +static void +_base_build_zero_len_sge_ieee(struct MPT3SAS_ADAPTER *ioc, void *paddr) +{ + u8 sgl_flags = (MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT | + MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR | + MPI25_IEEE_SGE_FLAGS_END_OF_LIST); + + _base_add_sg_single_ieee(paddr, sgl_flags, 0, 0, -1); +} + +/** + * _base_build_sg_scmd - main sg creation routine + * pcie_device is unused here! + * @ioc: per adapter object + * @scmd: scsi command + * @smid: system request message index + * @unused: unused pcie_device pointer + * Context: none. + * + * The main routine that builds scatter gather table from a given + * scsi request sent via the .queuecommand main handler. + * + * Return: 0 success, anything else error + */ +static int +_base_build_sg_scmd(struct MPT3SAS_ADAPTER *ioc, + struct scsi_cmnd *scmd, u16 smid, struct _pcie_device *unused) +{ + Mpi2SCSIIORequest_t *mpi_request; + dma_addr_t chain_dma; + struct scatterlist *sg_scmd; + void *sg_local, *chain; + u32 chain_offset; + u32 chain_length; + u32 chain_flags; + int sges_left; + u32 sges_in_segment; + u32 sgl_flags; + u32 sgl_flags_last_element; + u32 sgl_flags_end_buffer; + struct chain_tracker *chain_req; + + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + + /* init scatter gather flags */ + sgl_flags = MPI2_SGE_FLAGS_SIMPLE_ELEMENT; + if (scmd->sc_data_direction == DMA_TO_DEVICE) + sgl_flags |= MPI2_SGE_FLAGS_HOST_TO_IOC; + sgl_flags_last_element = (sgl_flags | MPI2_SGE_FLAGS_LAST_ELEMENT) + << MPI2_SGE_FLAGS_SHIFT; + sgl_flags_end_buffer = (sgl_flags | MPI2_SGE_FLAGS_LAST_ELEMENT | + MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST) + << MPI2_SGE_FLAGS_SHIFT; + sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; + + sg_scmd = scsi_sglist(scmd); + sges_left = scsi_dma_map(scmd); + if (sges_left < 0) + return -ENOMEM; + + sg_local = &mpi_request->SGL; + sges_in_segment = ioc->max_sges_in_main_message; + if (sges_left <= sges_in_segment) + goto fill_in_last_segment; + + mpi_request->ChainOffset = (offsetof(Mpi2SCSIIORequest_t, SGL) + + (sges_in_segment * ioc->sge_size))/4; + + /* fill in main message segment when there is a chain following */ + while (sges_in_segment) { + if (sges_in_segment == 1) + ioc->base_add_sg_single(sg_local, + sgl_flags_last_element | sg_dma_len(sg_scmd), + sg_dma_address(sg_scmd)); + else + ioc->base_add_sg_single(sg_local, sgl_flags | + sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); + sg_scmd = sg_next(sg_scmd); + sg_local += ioc->sge_size; + sges_left--; + sges_in_segment--; + } + + /* initializing the chain flags and pointers */ + chain_flags = MPI2_SGE_FLAGS_CHAIN_ELEMENT << MPI2_SGE_FLAGS_SHIFT; + chain_req = _base_get_chain_buffer_tracker(ioc, scmd); + if (!chain_req) + return -1; + chain = chain_req->chain_buffer; + chain_dma = chain_req->chain_buffer_dma; + do { + sges_in_segment = (sges_left <= + ioc->max_sges_in_chain_message) ? sges_left : + ioc->max_sges_in_chain_message; + chain_offset = (sges_left == sges_in_segment) ? + 0 : (sges_in_segment * ioc->sge_size)/4; + chain_length = sges_in_segment * ioc->sge_size; + if (chain_offset) { + chain_offset = chain_offset << + MPI2_SGE_CHAIN_OFFSET_SHIFT; + chain_length += ioc->sge_size; + } + ioc->base_add_sg_single(sg_local, chain_flags | chain_offset | + chain_length, chain_dma); + sg_local = chain; + if (!chain_offset) + goto fill_in_last_segment; + + /* fill in chain segments */ + while (sges_in_segment) { + if (sges_in_segment == 1) + ioc->base_add_sg_single(sg_local, + sgl_flags_last_element | + sg_dma_len(sg_scmd), + sg_dma_address(sg_scmd)); + else + ioc->base_add_sg_single(sg_local, sgl_flags | + sg_dma_len(sg_scmd), + sg_dma_address(sg_scmd)); + sg_scmd = sg_next(sg_scmd); + sg_local += ioc->sge_size; + sges_left--; + sges_in_segment--; + } + + chain_req = _base_get_chain_buffer_tracker(ioc, scmd); + if (!chain_req) + return -1; + chain = chain_req->chain_buffer; + chain_dma = chain_req->chain_buffer_dma; + } while (1); + + + fill_in_last_segment: + + /* fill the last segment */ + while (sges_left) { + if (sges_left == 1) + ioc->base_add_sg_single(sg_local, sgl_flags_end_buffer | + sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); + else + ioc->base_add_sg_single(sg_local, sgl_flags | + sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); + sg_scmd = sg_next(sg_scmd); + sg_local += ioc->sge_size; + sges_left--; + } + + return 0; +} + +/** + * _base_build_sg_scmd_ieee - main sg creation routine for IEEE format + * @ioc: per adapter object + * @scmd: scsi command + * @smid: system request message index + * @pcie_device: Pointer to pcie_device. If set, the pcie native sgl will be + * constructed on need. + * Context: none. + * + * The main routine that builds scatter gather table from a given + * scsi request sent via the .queuecommand main handler. + * + * Return: 0 success, anything else error + */ +static int +_base_build_sg_scmd_ieee(struct MPT3SAS_ADAPTER *ioc, + struct scsi_cmnd *scmd, u16 smid, struct _pcie_device *pcie_device) +{ + Mpi25SCSIIORequest_t *mpi_request; + dma_addr_t chain_dma; + struct scatterlist *sg_scmd; + void *sg_local, *chain; + u32 chain_offset; + u32 chain_length; + int sges_left; + u32 sges_in_segment; + u8 simple_sgl_flags; + u8 simple_sgl_flags_last; + u8 chain_sgl_flags; + struct chain_tracker *chain_req; + + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + + /* init scatter gather flags */ + simple_sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT | + MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR; + simple_sgl_flags_last = simple_sgl_flags | + MPI25_IEEE_SGE_FLAGS_END_OF_LIST; + chain_sgl_flags = MPI2_IEEE_SGE_FLAGS_CHAIN_ELEMENT | + MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR; + + /* Check if we need to build a native SG list. */ + if ((pcie_device) && (_base_check_pcie_native_sgl(ioc, mpi_request, + smid, scmd, pcie_device) == 0)) { + /* We built a native SG list, just return. */ + return 0; + } + + sg_scmd = scsi_sglist(scmd); + sges_left = scsi_dma_map(scmd); + if (sges_left < 0) + return -ENOMEM; + + sg_local = &mpi_request->SGL; + sges_in_segment = (ioc->request_sz - + offsetof(Mpi25SCSIIORequest_t, SGL))/ioc->sge_size_ieee; + if (sges_left <= sges_in_segment) + goto fill_in_last_segment; + + mpi_request->ChainOffset = (sges_in_segment - 1 /* chain element */) + + (offsetof(Mpi25SCSIIORequest_t, SGL)/ioc->sge_size_ieee); + + /* fill in main message segment when there is a chain following */ + while (sges_in_segment > 1) { + _base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0, + sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); + sg_scmd = sg_next(sg_scmd); + sg_local += ioc->sge_size_ieee; + sges_left--; + sges_in_segment--; + } + + /* initializing the pointers */ + chain_req = _base_get_chain_buffer_tracker(ioc, scmd); + if (!chain_req) + return -1; + chain = chain_req->chain_buffer; + chain_dma = chain_req->chain_buffer_dma; + do { + sges_in_segment = (sges_left <= + ioc->max_sges_in_chain_message) ? sges_left : + ioc->max_sges_in_chain_message; + chain_offset = (sges_left == sges_in_segment) ? + 0 : sges_in_segment; + chain_length = sges_in_segment * ioc->sge_size_ieee; + if (chain_offset) + chain_length += ioc->sge_size_ieee; + _base_add_sg_single_ieee(sg_local, chain_sgl_flags, + chain_offset, chain_length, chain_dma); + + sg_local = chain; + if (!chain_offset) + goto fill_in_last_segment; + + /* fill in chain segments */ + while (sges_in_segment) { + _base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0, + sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); + sg_scmd = sg_next(sg_scmd); + sg_local += ioc->sge_size_ieee; + sges_left--; + sges_in_segment--; + } + + chain_req = _base_get_chain_buffer_tracker(ioc, scmd); + if (!chain_req) + return -1; + chain = chain_req->chain_buffer; + chain_dma = chain_req->chain_buffer_dma; + } while (1); + + + fill_in_last_segment: + + /* fill the last segment */ + while (sges_left > 0) { + if (sges_left == 1) + _base_add_sg_single_ieee(sg_local, + simple_sgl_flags_last, 0, sg_dma_len(sg_scmd), + sg_dma_address(sg_scmd)); + else + _base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0, + sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); + sg_scmd = sg_next(sg_scmd); + sg_local += ioc->sge_size_ieee; + sges_left--; + } + + return 0; +} + +/** + * _base_build_sg_ieee - build generic sg for IEEE format + * @ioc: per adapter object + * @psge: virtual address for SGE + * @data_out_dma: physical address for WRITES + * @data_out_sz: data xfer size for WRITES + * @data_in_dma: physical address for READS + * @data_in_sz: data xfer size for READS + */ +static void +_base_build_sg_ieee(struct MPT3SAS_ADAPTER *ioc, void *psge, + dma_addr_t data_out_dma, size_t data_out_sz, dma_addr_t data_in_dma, + size_t data_in_sz) +{ + u8 sgl_flags; + + if (!data_out_sz && !data_in_sz) { + _base_build_zero_len_sge_ieee(ioc, psge); + return; + } + + if (data_out_sz && data_in_sz) { + /* WRITE sgel first */ + sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT | + MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR; + _base_add_sg_single_ieee(psge, sgl_flags, 0, data_out_sz, + data_out_dma); + + /* incr sgel */ + psge += ioc->sge_size_ieee; + + /* READ sgel last */ + sgl_flags |= MPI25_IEEE_SGE_FLAGS_END_OF_LIST; + _base_add_sg_single_ieee(psge, sgl_flags, 0, data_in_sz, + data_in_dma); + } else if (data_out_sz) /* WRITE */ { + sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT | + MPI25_IEEE_SGE_FLAGS_END_OF_LIST | + MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR; + _base_add_sg_single_ieee(psge, sgl_flags, 0, data_out_sz, + data_out_dma); + } else if (data_in_sz) /* READ */ { + sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT | + MPI25_IEEE_SGE_FLAGS_END_OF_LIST | + MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR; + _base_add_sg_single_ieee(psge, sgl_flags, 0, data_in_sz, + data_in_dma); + } +} + +#define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10)) + +/** + * _base_config_dma_addressing - set dma addressing + * @ioc: per adapter object + * @pdev: PCI device struct + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev) +{ + struct sysinfo s; + u64 coherent_dma_mask, dma_mask; + + if (ioc->is_mcpu_endpoint || sizeof(dma_addr_t) == 4) { + ioc->dma_mask = 32; + coherent_dma_mask = dma_mask = DMA_BIT_MASK(32); + /* Set 63 bit DMA mask for all SAS3 and SAS35 controllers */ + } else if (ioc->hba_mpi_version_belonged > MPI2_VERSION) { + ioc->dma_mask = 63; + coherent_dma_mask = dma_mask = DMA_BIT_MASK(63); + } else { + ioc->dma_mask = 64; + coherent_dma_mask = dma_mask = DMA_BIT_MASK(64); + } + + if (ioc->use_32bit_dma) + coherent_dma_mask = DMA_BIT_MASK(32); + + if (dma_set_mask(&pdev->dev, dma_mask) || + dma_set_coherent_mask(&pdev->dev, coherent_dma_mask)) + return -ENODEV; + + if (ioc->dma_mask > 32) { + ioc->base_add_sg_single = &_base_add_sg_single_64; + ioc->sge_size = sizeof(Mpi2SGESimple64_t); + } else { + ioc->base_add_sg_single = &_base_add_sg_single_32; + ioc->sge_size = sizeof(Mpi2SGESimple32_t); + } + + si_meminfo(&s); + ioc_info(ioc, "%d BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (%ld kB)\n", + ioc->dma_mask, convert_to_kb(s.totalram)); + + return 0; +} + +/** + * _base_check_enable_msix - checks MSIX capabable. + * @ioc: per adapter object + * + * Check to see if card is capable of MSIX, and set number + * of available msix vectors + */ +static int +_base_check_enable_msix(struct MPT3SAS_ADAPTER *ioc) +{ + int base; + u16 message_control; + + /* Check whether controller SAS2008 B0 controller, + * if it is SAS2008 B0 controller use IO-APIC instead of MSIX + */ + if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 && + ioc->pdev->revision == SAS2_PCI_DEVICE_B0_REVISION) { + return -EINVAL; + } + + base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX); + if (!base) { + dfailprintk(ioc, ioc_info(ioc, "msix not supported\n")); + return -EINVAL; + } + + /* get msix vector count */ + /* NUMA_IO not supported for older controllers */ + if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 || + ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 || + ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 || + ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 || + ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 || + ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 || + ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2) + ioc->msix_vector_count = 1; + else { + pci_read_config_word(ioc->pdev, base + 2, &message_control); + ioc->msix_vector_count = (message_control & 0x3FF) + 1; + } + dinitprintk(ioc, ioc_info(ioc, "msix is supported, vector_count(%d)\n", + ioc->msix_vector_count)); + return 0; +} + +/** + * mpt3sas_base_free_irq - free irq + * @ioc: per adapter object + * + * Freeing respective reply_queue from the list. + */ +void +mpt3sas_base_free_irq(struct MPT3SAS_ADAPTER *ioc) +{ + unsigned int irq; + struct adapter_reply_queue *reply_q, *next; + + if (list_empty(&ioc->reply_queue_list)) + return; + + list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) { + list_del(&reply_q->list); + if (reply_q->is_iouring_poll_q) { + kfree(reply_q); + continue; + } + + if (ioc->smp_affinity_enable) { + irq = pci_irq_vector(ioc->pdev, reply_q->msix_index); + irq_update_affinity_hint(irq, NULL); + } + free_irq(pci_irq_vector(ioc->pdev, reply_q->msix_index), + reply_q); + kfree(reply_q); + } +} + +/** + * _base_request_irq - request irq + * @ioc: per adapter object + * @index: msix index into vector table + * + * Inserting respective reply_queue into the list. + */ +static int +_base_request_irq(struct MPT3SAS_ADAPTER *ioc, u8 index) +{ + struct pci_dev *pdev = ioc->pdev; + struct adapter_reply_queue *reply_q; + int r, qid; + + reply_q = kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL); + if (!reply_q) { + ioc_err(ioc, "unable to allocate memory %zu!\n", + sizeof(struct adapter_reply_queue)); + return -ENOMEM; + } + reply_q->ioc = ioc; + reply_q->msix_index = index; + + atomic_set(&reply_q->busy, 0); + + if (index >= ioc->iopoll_q_start_index) { + qid = index - ioc->iopoll_q_start_index; + snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-mq-poll%d", + ioc->driver_name, ioc->id, qid); + reply_q->is_iouring_poll_q = 1; + ioc->io_uring_poll_queues[qid].reply_q = reply_q; + goto out; + } + + + if (ioc->msix_enable) + snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d", + ioc->driver_name, ioc->id, index); + else + snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d", + ioc->driver_name, ioc->id); + r = request_irq(pci_irq_vector(pdev, index), _base_interrupt, + IRQF_SHARED, reply_q->name, reply_q); + if (r) { + pr_err("%s: unable to allocate interrupt %d!\n", + reply_q->name, pci_irq_vector(pdev, index)); + kfree(reply_q); + return -EBUSY; + } +out: + INIT_LIST_HEAD(&reply_q->list); + list_add_tail(&reply_q->list, &ioc->reply_queue_list); + return 0; +} + +/** + * _base_assign_reply_queues - assigning msix index for each cpu + * @ioc: per adapter object + * + * The enduser would need to set the affinity via /proc/irq/#/smp_affinity + */ +static void +_base_assign_reply_queues(struct MPT3SAS_ADAPTER *ioc) +{ + unsigned int cpu, nr_cpus, nr_msix, index = 0, irq; + struct adapter_reply_queue *reply_q; + int iopoll_q_count = ioc->reply_queue_count - + ioc->iopoll_q_start_index; + const struct cpumask *mask; + + if (!_base_is_controller_msix_enabled(ioc)) + return; + + if (ioc->msix_load_balance) + return; + + memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz); + + nr_cpus = num_online_cpus(); + nr_msix = ioc->reply_queue_count = min(ioc->reply_queue_count, + ioc->facts.MaxMSIxVectors); + if (!nr_msix) + return; + + if (ioc->smp_affinity_enable) { + + /* + * set irq affinity to local numa node for those irqs + * corresponding to high iops queues. + */ + if (ioc->high_iops_queues) { + mask = cpumask_of_node(dev_to_node(&ioc->pdev->dev)); + for (index = 0; index < ioc->high_iops_queues; + index++) { + irq = pci_irq_vector(ioc->pdev, index); + irq_set_affinity_and_hint(irq, mask); + } + } + + list_for_each_entry(reply_q, &ioc->reply_queue_list, list) { + const cpumask_t *mask; + + if (reply_q->msix_index < ioc->high_iops_queues || + reply_q->msix_index >= ioc->iopoll_q_start_index) + continue; + + mask = pci_irq_get_affinity(ioc->pdev, + reply_q->msix_index); + if (!mask) { + ioc_warn(ioc, "no affinity for msi %x\n", + reply_q->msix_index); + goto fall_back; + } + + for_each_cpu_and(cpu, mask, cpu_online_mask) { + if (cpu >= ioc->cpu_msix_table_sz) + break; + ioc->cpu_msix_table[cpu] = reply_q->msix_index; + } + } + return; + } + +fall_back: + cpu = cpumask_first(cpu_online_mask); + nr_msix -= (ioc->high_iops_queues - iopoll_q_count); + index = 0; + + list_for_each_entry(reply_q, &ioc->reply_queue_list, list) { + unsigned int i, group = nr_cpus / nr_msix; + + if (reply_q->msix_index < ioc->high_iops_queues || + reply_q->msix_index >= ioc->iopoll_q_start_index) + continue; + + if (cpu >= nr_cpus) + break; + + if (index < nr_cpus % nr_msix) + group++; + + for (i = 0 ; i < group ; i++) { + ioc->cpu_msix_table[cpu] = reply_q->msix_index; + cpu = cpumask_next(cpu, cpu_online_mask); + } + index++; + } +} + +/** + * _base_check_and_enable_high_iops_queues - enable high iops mode + * @ioc: per adapter object + * @hba_msix_vector_count: msix vectors supported by HBA + * + * Enable high iops queues only if + * - HBA is a SEA/AERO controller and + * - MSI-Xs vector supported by the HBA is 128 and + * - total CPU count in the system >=16 and + * - loaded driver with default max_msix_vectors module parameter and + * - system booted in non kdump mode + * + * Return: nothing. + */ +static void +_base_check_and_enable_high_iops_queues(struct MPT3SAS_ADAPTER *ioc, + int hba_msix_vector_count) +{ + u16 lnksta, speed; + + /* + * Disable high iops queues if io uring poll queues are enabled. + */ + if (perf_mode == MPT_PERF_MODE_IOPS || + perf_mode == MPT_PERF_MODE_LATENCY || + ioc->io_uring_poll_queues) { + ioc->high_iops_queues = 0; + return; + } + + if (perf_mode == MPT_PERF_MODE_DEFAULT) { + + pcie_capability_read_word(ioc->pdev, PCI_EXP_LNKSTA, &lnksta); + speed = lnksta & PCI_EXP_LNKSTA_CLS; + + if (speed < 0x4) { + ioc->high_iops_queues = 0; + return; + } + } + + if (!reset_devices && ioc->is_aero_ioc && + hba_msix_vector_count == MPT3SAS_GEN35_MAX_MSIX_QUEUES && + num_online_cpus() >= MPT3SAS_HIGH_IOPS_REPLY_QUEUES && + max_msix_vectors == -1) + ioc->high_iops_queues = MPT3SAS_HIGH_IOPS_REPLY_QUEUES; + else + ioc->high_iops_queues = 0; +} + +/** + * mpt3sas_base_disable_msix - disables msix + * @ioc: per adapter object + * + */ +void +mpt3sas_base_disable_msix(struct MPT3SAS_ADAPTER *ioc) +{ + if (!ioc->msix_enable) + return; + pci_free_irq_vectors(ioc->pdev); + ioc->msix_enable = 0; + kfree(ioc->io_uring_poll_queues); +} + +/** + * _base_alloc_irq_vectors - allocate msix vectors + * @ioc: per adapter object + * + */ +static int +_base_alloc_irq_vectors(struct MPT3SAS_ADAPTER *ioc) +{ + int i, irq_flags = PCI_IRQ_MSIX; + struct irq_affinity desc = { .pre_vectors = ioc->high_iops_queues }; + struct irq_affinity *descp = &desc; + /* + * Don't allocate msix vectors for poll_queues. + * msix_vectors is always within a range of FW supported reply queue. + */ + int nr_msix_vectors = ioc->iopoll_q_start_index; + + + if (ioc->smp_affinity_enable) + irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; + else + descp = NULL; + + ioc_info(ioc, " %d %d %d\n", ioc->high_iops_queues, + ioc->reply_queue_count, nr_msix_vectors); + + i = pci_alloc_irq_vectors_affinity(ioc->pdev, + ioc->high_iops_queues, + nr_msix_vectors, irq_flags, descp); + + return i; +} + +/** + * _base_enable_msix - enables msix, failback to io_apic + * @ioc: per adapter object + * + */ +static int +_base_enable_msix(struct MPT3SAS_ADAPTER *ioc) +{ + int r; + int i, local_max_msix_vectors; + u8 try_msix = 0; + int iopoll_q_count = 0; + + ioc->msix_load_balance = false; + + if (msix_disable == -1 || msix_disable == 0) + try_msix = 1; + + if (!try_msix) + goto try_ioapic; + + if (_base_check_enable_msix(ioc) != 0) + goto try_ioapic; + + ioc_info(ioc, "MSI-X vectors supported: %d\n", ioc->msix_vector_count); + pr_info("\t no of cores: %d, max_msix_vectors: %d\n", + ioc->cpu_count, max_msix_vectors); + + ioc->reply_queue_count = + min_t(int, ioc->cpu_count, ioc->msix_vector_count); + + if (!ioc->rdpq_array_enable && max_msix_vectors == -1) + local_max_msix_vectors = (reset_devices) ? 1 : 8; + else + local_max_msix_vectors = max_msix_vectors; + + if (local_max_msix_vectors == 0) + goto try_ioapic; + + /* + * Enable msix_load_balance only if combined reply queue mode is + * disabled on SAS3 & above generation HBA devices. + */ + if (!ioc->combined_reply_queue && + ioc->hba_mpi_version_belonged != MPI2_VERSION) { + ioc_info(ioc, + "combined ReplyQueue is off, Enabling msix load balance\n"); + ioc->msix_load_balance = true; + } + + /* + * smp affinity setting is not need when msix load balance + * is enabled. + */ + if (ioc->msix_load_balance) + ioc->smp_affinity_enable = 0; + + if (!ioc->smp_affinity_enable || ioc->reply_queue_count <= 1) + ioc->shost->host_tagset = 0; + + /* + * Enable io uring poll queues only if host_tagset is enabled. + */ + if (ioc->shost->host_tagset) + iopoll_q_count = poll_queues; + + if (iopoll_q_count) { + ioc->io_uring_poll_queues = kcalloc(iopoll_q_count, + sizeof(struct io_uring_poll_queue), GFP_KERNEL); + if (!ioc->io_uring_poll_queues) + iopoll_q_count = 0; + } + + if (ioc->is_aero_ioc) + _base_check_and_enable_high_iops_queues(ioc, + ioc->msix_vector_count); + + /* + * Add high iops queues count to reply queue count if high iops queues + * are enabled. + */ + ioc->reply_queue_count = min_t(int, + ioc->reply_queue_count + ioc->high_iops_queues, + ioc->msix_vector_count); + + /* + * Adjust the reply queue count incase reply queue count + * exceeds the user provided MSIx vectors count. + */ + if (local_max_msix_vectors > 0) + ioc->reply_queue_count = min_t(int, local_max_msix_vectors, + ioc->reply_queue_count); + /* + * Add io uring poll queues count to reply queues count + * if io uring is enabled in driver. + */ + if (iopoll_q_count) { + if (ioc->reply_queue_count < (iopoll_q_count + MPT3_MIN_IRQS)) + iopoll_q_count = 0; + ioc->reply_queue_count = min_t(int, + ioc->reply_queue_count + iopoll_q_count, + ioc->msix_vector_count); + } + + /* + * Starting index of io uring poll queues in reply queue list. + */ + ioc->iopoll_q_start_index = + ioc->reply_queue_count - iopoll_q_count; + + r = _base_alloc_irq_vectors(ioc); + if (r < 0) { + ioc_info(ioc, "pci_alloc_irq_vectors failed (r=%d) !!!\n", r); + goto try_ioapic; + } + + /* + * Adjust the reply queue count if the allocated + * MSIx vectors is less then the requested number + * of MSIx vectors. + */ + if (r < ioc->iopoll_q_start_index) { + ioc->reply_queue_count = r + iopoll_q_count; + ioc->iopoll_q_start_index = + ioc->reply_queue_count - iopoll_q_count; + } + + ioc->msix_enable = 1; + for (i = 0; i < ioc->reply_queue_count; i++) { + r = _base_request_irq(ioc, i); + if (r) { + mpt3sas_base_free_irq(ioc); + mpt3sas_base_disable_msix(ioc); + goto try_ioapic; + } + } + + ioc_info(ioc, "High IOPs queues : %s\n", + ioc->high_iops_queues ? "enabled" : "disabled"); + + return 0; + +/* failback to io_apic interrupt routing */ + try_ioapic: + ioc->high_iops_queues = 0; + ioc_info(ioc, "High IOPs queues : disabled\n"); + ioc->reply_queue_count = 1; + ioc->iopoll_q_start_index = ioc->reply_queue_count - 0; + r = pci_alloc_irq_vectors(ioc->pdev, 1, 1, PCI_IRQ_LEGACY); + if (r < 0) { + dfailprintk(ioc, + ioc_info(ioc, "pci_alloc_irq_vector(legacy) failed (r=%d) !!!\n", + r)); + } else + r = _base_request_irq(ioc, 0); + + return r; +} + +/** + * mpt3sas_base_unmap_resources - free controller resources + * @ioc: per adapter object + */ +static void +mpt3sas_base_unmap_resources(struct MPT3SAS_ADAPTER *ioc) +{ + struct pci_dev *pdev = ioc->pdev; + + dexitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + mpt3sas_base_free_irq(ioc); + mpt3sas_base_disable_msix(ioc); + + kfree(ioc->replyPostRegisterIndex); + ioc->replyPostRegisterIndex = NULL; + + + if (ioc->chip_phys) { + iounmap(ioc->chip); + ioc->chip_phys = 0; + } + + if (pci_is_enabled(pdev)) { + pci_release_selected_regions(ioc->pdev, ioc->bars); + pci_disable_device(pdev); + } +} + +static int +_base_diag_reset(struct MPT3SAS_ADAPTER *ioc); + +/** + * mpt3sas_base_check_for_fault_and_issue_reset - check if IOC is in fault state + * and if it is in fault state then issue diag reset. + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_check_for_fault_and_issue_reset(struct MPT3SAS_ADAPTER *ioc) +{ + u32 ioc_state; + int rc = -EFAULT; + + dinitprintk(ioc, pr_info("%s\n", __func__)); + if (ioc->pci_error_recovery) + return 0; + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); + dhsprintk(ioc, pr_info("%s: ioc_state(0x%08x)\n", __func__, ioc_state)); + + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) { + mpt3sas_print_fault_code(ioc, ioc_state & + MPI2_DOORBELL_DATA_MASK); + mpt3sas_base_mask_interrupts(ioc); + rc = _base_diag_reset(ioc); + } else if ((ioc_state & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_COREDUMP) { + mpt3sas_print_coredump_info(ioc, ioc_state & + MPI2_DOORBELL_DATA_MASK); + mpt3sas_base_wait_for_coredump_completion(ioc, __func__); + mpt3sas_base_mask_interrupts(ioc); + rc = _base_diag_reset(ioc); + } + + return rc; +} + +/** + * mpt3sas_base_map_resources - map in controller resources (io/irq/memap) + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_map_resources(struct MPT3SAS_ADAPTER *ioc) +{ + struct pci_dev *pdev = ioc->pdev; + u32 memap_sz; + u32 pio_sz; + int i, r = 0, rc; + u64 pio_chip = 0; + phys_addr_t chip_phys = 0; + struct adapter_reply_queue *reply_q; + int iopoll_q_count = 0; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM); + if (pci_enable_device_mem(pdev)) { + ioc_warn(ioc, "pci_enable_device_mem: failed\n"); + ioc->bars = 0; + return -ENODEV; + } + + + if (pci_request_selected_regions(pdev, ioc->bars, + ioc->driver_name)) { + ioc_warn(ioc, "pci_request_selected_regions: failed\n"); + ioc->bars = 0; + r = -ENODEV; + goto out_fail; + } + + pci_set_master(pdev); + + + if (_base_config_dma_addressing(ioc, pdev) != 0) { + ioc_warn(ioc, "no suitable DMA mask for %s\n", pci_name(pdev)); + r = -ENODEV; + goto out_fail; + } + + for (i = 0, memap_sz = 0, pio_sz = 0; (i < DEVICE_COUNT_RESOURCE) && + (!memap_sz || !pio_sz); i++) { + if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { + if (pio_sz) + continue; + pio_chip = (u64)pci_resource_start(pdev, i); + pio_sz = pci_resource_len(pdev, i); + } else if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { + if (memap_sz) + continue; + ioc->chip_phys = pci_resource_start(pdev, i); + chip_phys = ioc->chip_phys; + memap_sz = pci_resource_len(pdev, i); + ioc->chip = ioremap(ioc->chip_phys, memap_sz); + } + } + + if (ioc->chip == NULL) { + ioc_err(ioc, + "unable to map adapter memory! or resource not found\n"); + r = -EINVAL; + goto out_fail; + } + + mpt3sas_base_mask_interrupts(ioc); + + r = _base_get_ioc_facts(ioc); + if (r) { + rc = mpt3sas_base_check_for_fault_and_issue_reset(ioc); + if (rc || (_base_get_ioc_facts(ioc))) + goto out_fail; + } + + if (!ioc->rdpq_array_enable_assigned) { + ioc->rdpq_array_enable = ioc->rdpq_array_capable; + ioc->rdpq_array_enable_assigned = 1; + } + + r = _base_enable_msix(ioc); + if (r) + goto out_fail; + + iopoll_q_count = ioc->reply_queue_count - ioc->iopoll_q_start_index; + for (i = 0; i < iopoll_q_count; i++) { + atomic_set(&ioc->io_uring_poll_queues[i].busy, 0); + atomic_set(&ioc->io_uring_poll_queues[i].pause, 0); + } + + if (!ioc->is_driver_loading) + _base_init_irqpolls(ioc); + /* Use the Combined reply queue feature only for SAS3 C0 & higher + * revision HBAs and also only when reply queue count is greater than 8 + */ + if (ioc->combined_reply_queue) { + /* Determine the Supplemental Reply Post Host Index Registers + * Addresse. Supplemental Reply Post Host Index Registers + * starts at offset MPI25_SUP_REPLY_POST_HOST_INDEX_OFFSET and + * each register is at offset bytes of + * MPT3_SUP_REPLY_POST_HOST_INDEX_REG_OFFSET from previous one. + */ + ioc->replyPostRegisterIndex = kcalloc( + ioc->combined_reply_index_count, + sizeof(resource_size_t *), GFP_KERNEL); + if (!ioc->replyPostRegisterIndex) { + ioc_err(ioc, + "allocation for replyPostRegisterIndex failed!\n"); + r = -ENOMEM; + goto out_fail; + } + + for (i = 0; i < ioc->combined_reply_index_count; i++) { + ioc->replyPostRegisterIndex[i] = + (resource_size_t __iomem *) + ((u8 __force *)&ioc->chip->Doorbell + + MPI25_SUP_REPLY_POST_HOST_INDEX_OFFSET + + (i * MPT3_SUP_REPLY_POST_HOST_INDEX_REG_OFFSET)); + } + } + + if (ioc->is_warpdrive) { + ioc->reply_post_host_index[0] = (resource_size_t __iomem *) + &ioc->chip->ReplyPostHostIndex; + + for (i = 1; i < ioc->cpu_msix_table_sz; i++) + ioc->reply_post_host_index[i] = + (resource_size_t __iomem *) + ((u8 __iomem *)&ioc->chip->Doorbell + (0x4000 + ((i - 1) + * 4))); + } + + list_for_each_entry(reply_q, &ioc->reply_queue_list, list) { + if (reply_q->msix_index >= ioc->iopoll_q_start_index) { + pr_info("%s: enabled: index: %d\n", + reply_q->name, reply_q->msix_index); + continue; + } + + pr_info("%s: %s enabled: IRQ %d\n", + reply_q->name, + ioc->msix_enable ? "PCI-MSI-X" : "IO-APIC", + pci_irq_vector(ioc->pdev, reply_q->msix_index)); + } + + ioc_info(ioc, "iomem(%pap), mapped(0x%p), size(%d)\n", + &chip_phys, ioc->chip, memap_sz); + ioc_info(ioc, "ioport(0x%016llx), size(%d)\n", + (unsigned long long)pio_chip, pio_sz); + + /* Save PCI configuration state for recovery from PCI AER/EEH errors */ + pci_save_state(pdev); + return 0; + + out_fail: + mpt3sas_base_unmap_resources(ioc); + return r; +} + +/** + * mpt3sas_base_get_msg_frame - obtain request mf pointer + * @ioc: per adapter object + * @smid: system request message index(smid zero is invalid) + * + * Return: virt pointer to message frame. + */ +void * +mpt3sas_base_get_msg_frame(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + return (void *)(ioc->request + (smid * ioc->request_sz)); +} + +/** + * mpt3sas_base_get_sense_buffer - obtain a sense buffer virt addr + * @ioc: per adapter object + * @smid: system request message index + * + * Return: virt pointer to sense buffer. + */ +void * +mpt3sas_base_get_sense_buffer(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE)); +} + +/** + * mpt3sas_base_get_sense_buffer_dma - obtain a sense buffer dma addr + * @ioc: per adapter object + * @smid: system request message index + * + * Return: phys pointer to the low 32bit address of the sense buffer. + */ +__le32 +mpt3sas_base_get_sense_buffer_dma(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + return cpu_to_le32(ioc->sense_dma + ((smid - 1) * + SCSI_SENSE_BUFFERSIZE)); +} + +/** + * mpt3sas_base_get_pcie_sgl - obtain a PCIe SGL virt addr + * @ioc: per adapter object + * @smid: system request message index + * + * Return: virt pointer to a PCIe SGL. + */ +void * +mpt3sas_base_get_pcie_sgl(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + return (void *)(ioc->pcie_sg_lookup[smid - 1].pcie_sgl); +} + +/** + * mpt3sas_base_get_pcie_sgl_dma - obtain a PCIe SGL dma addr + * @ioc: per adapter object + * @smid: system request message index + * + * Return: phys pointer to the address of the PCIe buffer. + */ +dma_addr_t +mpt3sas_base_get_pcie_sgl_dma(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + return ioc->pcie_sg_lookup[smid - 1].pcie_sgl_dma; +} + +/** + * mpt3sas_base_get_reply_virt_addr - obtain reply frames virt address + * @ioc: per adapter object + * @phys_addr: lower 32 physical addr of the reply + * + * Converts 32bit lower physical addr into a virt address. + */ +void * +mpt3sas_base_get_reply_virt_addr(struct MPT3SAS_ADAPTER *ioc, u32 phys_addr) +{ + if (!phys_addr) + return NULL; + return ioc->reply + (phys_addr - (u32)ioc->reply_dma); +} + +/** + * _base_get_msix_index - get the msix index + * @ioc: per adapter object + * @scmd: scsi_cmnd object + * + * Return: msix index of general reply queues, + * i.e. reply queue on which IO request's reply + * should be posted by the HBA firmware. + */ +static inline u8 +_base_get_msix_index(struct MPT3SAS_ADAPTER *ioc, + struct scsi_cmnd *scmd) +{ + /* Enables reply_queue load balancing */ + if (ioc->msix_load_balance) + return ioc->reply_queue_count ? + base_mod64(atomic64_add_return(1, + &ioc->total_io_cnt), ioc->reply_queue_count) : 0; + + if (scmd && ioc->shost->nr_hw_queues > 1) { + u32 tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd)); + + return blk_mq_unique_tag_to_hwq(tag) + + ioc->high_iops_queues; + } + + return ioc->cpu_msix_table[raw_smp_processor_id()]; +} + +/** + * _base_get_high_iops_msix_index - get the msix index of + * high iops queues + * @ioc: per adapter object + * @scmd: scsi_cmnd object + * + * Return: msix index of high iops reply queues. + * i.e. high iops reply queue on which IO request's + * reply should be posted by the HBA firmware. + */ +static inline u8 +_base_get_high_iops_msix_index(struct MPT3SAS_ADAPTER *ioc, + struct scsi_cmnd *scmd) +{ + /** + * Round robin the IO interrupts among the high iops + * reply queues in terms of batch count 16 when outstanding + * IOs on the target device is >=8. + */ + + if (scsi_device_busy(scmd->device) > MPT3SAS_DEVICE_HIGH_IOPS_DEPTH) + return base_mod64(( + atomic64_add_return(1, &ioc->high_iops_outstanding) / + MPT3SAS_HIGH_IOPS_BATCH_COUNT), + MPT3SAS_HIGH_IOPS_REPLY_QUEUES); + + return _base_get_msix_index(ioc, scmd); +} + +/** + * mpt3sas_base_get_smid - obtain a free smid from internal queue + * @ioc: per adapter object + * @cb_idx: callback index + * + * Return: smid (zero is invalid) + */ +u16 +mpt3sas_base_get_smid(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx) +{ + unsigned long flags; + struct request_tracker *request; + u16 smid; + + spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); + if (list_empty(&ioc->internal_free_list)) { + spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); + ioc_err(ioc, "%s: smid not available\n", __func__); + return 0; + } + + request = list_entry(ioc->internal_free_list.next, + struct request_tracker, tracker_list); + request->cb_idx = cb_idx; + smid = request->smid; + list_del(&request->tracker_list); + spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); + return smid; +} + +/** + * mpt3sas_base_get_smid_scsiio - obtain a free smid from scsiio queue + * @ioc: per adapter object + * @cb_idx: callback index + * @scmd: pointer to scsi command object + * + * Return: smid (zero is invalid) + */ +u16 +mpt3sas_base_get_smid_scsiio(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx, + struct scsi_cmnd *scmd) +{ + struct scsiio_tracker *request = scsi_cmd_priv(scmd); + u16 smid; + u32 tag, unique_tag; + + unique_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd)); + tag = blk_mq_unique_tag_to_tag(unique_tag); + + /* + * Store hw queue number corresponding to the tag. + * This hw queue number is used later to determine + * the unique_tag using the logic below. This unique_tag + * is used to retrieve the scmd pointer corresponding + * to tag using scsi_host_find_tag() API. + * + * tag = smid - 1; + * unique_tag = ioc->io_queue_num[tag] << BLK_MQ_UNIQUE_TAG_BITS | tag; + */ + ioc->io_queue_num[tag] = blk_mq_unique_tag_to_hwq(unique_tag); + + smid = tag + 1; + request->cb_idx = cb_idx; + request->smid = smid; + request->scmd = scmd; + INIT_LIST_HEAD(&request->chain_list); + return smid; +} + +/** + * mpt3sas_base_get_smid_hpr - obtain a free smid from hi-priority queue + * @ioc: per adapter object + * @cb_idx: callback index + * + * Return: smid (zero is invalid) + */ +u16 +mpt3sas_base_get_smid_hpr(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx) +{ + unsigned long flags; + struct request_tracker *request; + u16 smid; + + spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); + if (list_empty(&ioc->hpr_free_list)) { + spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); + return 0; + } + + request = list_entry(ioc->hpr_free_list.next, + struct request_tracker, tracker_list); + request->cb_idx = cb_idx; + smid = request->smid; + list_del(&request->tracker_list); + spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); + return smid; +} + +static void +_base_recovery_check(struct MPT3SAS_ADAPTER *ioc) +{ + /* + * See _wait_for_commands_to_complete() call with regards to this code. + */ + if (ioc->shost_recovery && ioc->pending_io_count) { + ioc->pending_io_count = scsi_host_busy(ioc->shost); + if (ioc->pending_io_count == 0) + wake_up(&ioc->reset_wq); + } +} + +void mpt3sas_base_clear_st(struct MPT3SAS_ADAPTER *ioc, + struct scsiio_tracker *st) +{ + if (WARN_ON(st->smid == 0)) + return; + st->cb_idx = 0xFF; + st->direct_io = 0; + st->scmd = NULL; + atomic_set(&ioc->chain_lookup[st->smid - 1].chain_offset, 0); + st->smid = 0; +} + +/** + * mpt3sas_base_free_smid - put smid back on free_list + * @ioc: per adapter object + * @smid: system request message index + */ +void +mpt3sas_base_free_smid(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + unsigned long flags; + int i; + + if (smid < ioc->hi_priority_smid) { + struct scsiio_tracker *st; + void *request; + + st = _get_st_from_smid(ioc, smid); + if (!st) { + _base_recovery_check(ioc); + return; + } + + /* Clear MPI request frame */ + request = mpt3sas_base_get_msg_frame(ioc, smid); + memset(request, 0, ioc->request_sz); + + mpt3sas_base_clear_st(ioc, st); + _base_recovery_check(ioc); + ioc->io_queue_num[smid - 1] = 0; + return; + } + + spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); + if (smid < ioc->internal_smid) { + /* hi-priority */ + i = smid - ioc->hi_priority_smid; + ioc->hpr_lookup[i].cb_idx = 0xFF; + list_add(&ioc->hpr_lookup[i].tracker_list, &ioc->hpr_free_list); + } else if (smid <= ioc->hba_queue_depth) { + /* internal queue */ + i = smid - ioc->internal_smid; + ioc->internal_lookup[i].cb_idx = 0xFF; + list_add(&ioc->internal_lookup[i].tracker_list, + &ioc->internal_free_list); + } + spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); +} + +/** + * _base_mpi_ep_writeq - 32 bit write to MMIO + * @b: data payload + * @addr: address in MMIO space + * @writeq_lock: spin lock + * + * This special handling for MPI EP to take care of 32 bit + * environment where its not quarenteed to send the entire word + * in one transfer. + */ +static inline void +_base_mpi_ep_writeq(__u64 b, volatile void __iomem *addr, + spinlock_t *writeq_lock) +{ + unsigned long flags; + + spin_lock_irqsave(writeq_lock, flags); + __raw_writel((u32)(b), addr); + __raw_writel((u32)(b >> 32), (addr + 4)); + spin_unlock_irqrestore(writeq_lock, flags); +} + +/** + * _base_writeq - 64 bit write to MMIO + * @b: data payload + * @addr: address in MMIO space + * @writeq_lock: spin lock + * + * Glue for handling an atomic 64 bit word to MMIO. This special handling takes + * care of 32 bit environment where its not quarenteed to send the entire word + * in one transfer. + */ +#if defined(writeq) && defined(CONFIG_64BIT) +static inline void +_base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock) +{ + wmb(); + __raw_writeq(b, addr); + barrier(); +} +#else +static inline void +_base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock) +{ + _base_mpi_ep_writeq(b, addr, writeq_lock); +} +#endif + +/** + * _base_set_and_get_msix_index - get the msix index and assign to msix_io + * variable of scsi tracker + * @ioc: per adapter object + * @smid: system request message index + * + * Return: msix index. + */ +static u8 +_base_set_and_get_msix_index(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + struct scsiio_tracker *st = NULL; + + if (smid < ioc->hi_priority_smid) + st = _get_st_from_smid(ioc, smid); + + if (st == NULL) + return _base_get_msix_index(ioc, NULL); + + st->msix_io = ioc->get_msix_index_for_smlio(ioc, st->scmd); + return st->msix_io; +} + +/** + * _base_put_smid_mpi_ep_scsi_io - send SCSI_IO request to firmware + * @ioc: per adapter object + * @smid: system request message index + * @handle: device handle + */ +static void +_base_put_smid_mpi_ep_scsi_io(struct MPT3SAS_ADAPTER *ioc, + u16 smid, u16 handle) +{ + Mpi2RequestDescriptorUnion_t descriptor; + u64 *request = (u64 *)&descriptor; + void *mpi_req_iomem; + __le32 *mfp = (__le32 *)mpt3sas_base_get_msg_frame(ioc, smid); + + _clone_sg_entries(ioc, (void *) mfp, smid); + mpi_req_iomem = (void __force *)ioc->chip + + MPI_FRAME_START_OFFSET + (smid * ioc->request_sz); + _base_clone_mpi_to_sys_mem(mpi_req_iomem, (void *)mfp, + ioc->request_sz); + descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO; + descriptor.SCSIIO.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.SCSIIO.SMID = cpu_to_le16(smid); + descriptor.SCSIIO.DevHandle = cpu_to_le16(handle); + descriptor.SCSIIO.LMID = 0; + _base_mpi_ep_writeq(*request, &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); +} + +/** + * _base_put_smid_scsi_io - send SCSI_IO request to firmware + * @ioc: per adapter object + * @smid: system request message index + * @handle: device handle + */ +static void +_base_put_smid_scsi_io(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 handle) +{ + Mpi2RequestDescriptorUnion_t descriptor; + u64 *request = (u64 *)&descriptor; + + + descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO; + descriptor.SCSIIO.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.SCSIIO.SMID = cpu_to_le16(smid); + descriptor.SCSIIO.DevHandle = cpu_to_le16(handle); + descriptor.SCSIIO.LMID = 0; + _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); +} + +/** + * _base_put_smid_fast_path - send fast path request to firmware + * @ioc: per adapter object + * @smid: system request message index + * @handle: device handle + */ +static void +_base_put_smid_fast_path(struct MPT3SAS_ADAPTER *ioc, u16 smid, + u16 handle) +{ + Mpi2RequestDescriptorUnion_t descriptor; + u64 *request = (u64 *)&descriptor; + + descriptor.SCSIIO.RequestFlags = + MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO; + descriptor.SCSIIO.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.SCSIIO.SMID = cpu_to_le16(smid); + descriptor.SCSIIO.DevHandle = cpu_to_le16(handle); + descriptor.SCSIIO.LMID = 0; + _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); +} + +/** + * _base_put_smid_hi_priority - send Task Management request to firmware + * @ioc: per adapter object + * @smid: system request message index + * @msix_task: msix_task will be same as msix of IO in case of task abort else 0 + */ +static void +_base_put_smid_hi_priority(struct MPT3SAS_ADAPTER *ioc, u16 smid, + u16 msix_task) +{ + Mpi2RequestDescriptorUnion_t descriptor; + void *mpi_req_iomem; + u64 *request; + + if (ioc->is_mcpu_endpoint) { + __le32 *mfp = (__le32 *)mpt3sas_base_get_msg_frame(ioc, smid); + + /* TBD 256 is offset within sys register. */ + mpi_req_iomem = (void __force *)ioc->chip + + MPI_FRAME_START_OFFSET + + (smid * ioc->request_sz); + _base_clone_mpi_to_sys_mem(mpi_req_iomem, (void *)mfp, + ioc->request_sz); + } + + request = (u64 *)&descriptor; + + descriptor.HighPriority.RequestFlags = + MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY; + descriptor.HighPriority.MSIxIndex = msix_task; + descriptor.HighPriority.SMID = cpu_to_le16(smid); + descriptor.HighPriority.LMID = 0; + descriptor.HighPriority.Reserved1 = 0; + if (ioc->is_mcpu_endpoint) + _base_mpi_ep_writeq(*request, + &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); + else + _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); +} + +/** + * mpt3sas_base_put_smid_nvme_encap - send NVMe encapsulated request to + * firmware + * @ioc: per adapter object + * @smid: system request message index + */ +void +mpt3sas_base_put_smid_nvme_encap(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + Mpi2RequestDescriptorUnion_t descriptor; + u64 *request = (u64 *)&descriptor; + + descriptor.Default.RequestFlags = + MPI26_REQ_DESCRIPT_FLAGS_PCIE_ENCAPSULATED; + descriptor.Default.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.Default.SMID = cpu_to_le16(smid); + descriptor.Default.LMID = 0; + descriptor.Default.DescriptorTypeDependent = 0; + _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); +} + +/** + * _base_put_smid_default - Default, primarily used for config pages + * @ioc: per adapter object + * @smid: system request message index + */ +static void +_base_put_smid_default(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + Mpi2RequestDescriptorUnion_t descriptor; + void *mpi_req_iomem; + u64 *request; + + if (ioc->is_mcpu_endpoint) { + __le32 *mfp = (__le32 *)mpt3sas_base_get_msg_frame(ioc, smid); + + _clone_sg_entries(ioc, (void *) mfp, smid); + /* TBD 256 is offset within sys register */ + mpi_req_iomem = (void __force *)ioc->chip + + MPI_FRAME_START_OFFSET + (smid * ioc->request_sz); + _base_clone_mpi_to_sys_mem(mpi_req_iomem, (void *)mfp, + ioc->request_sz); + } + request = (u64 *)&descriptor; + descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE; + descriptor.Default.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.Default.SMID = cpu_to_le16(smid); + descriptor.Default.LMID = 0; + descriptor.Default.DescriptorTypeDependent = 0; + if (ioc->is_mcpu_endpoint) + _base_mpi_ep_writeq(*request, + &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); + else + _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow, + &ioc->scsi_lookup_lock); +} + +/** + * _base_put_smid_scsi_io_atomic - send SCSI_IO request to firmware using + * Atomic Request Descriptor + * @ioc: per adapter object + * @smid: system request message index + * @handle: device handle, unused in this function, for function type match + * + * Return: nothing. + */ +static void +_base_put_smid_scsi_io_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid, + u16 handle) +{ + Mpi26AtomicRequestDescriptor_t descriptor; + u32 *request = (u32 *)&descriptor; + + descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO; + descriptor.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.SMID = cpu_to_le16(smid); + + writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost); +} + +/** + * _base_put_smid_fast_path_atomic - send fast path request to firmware + * using Atomic Request Descriptor + * @ioc: per adapter object + * @smid: system request message index + * @handle: device handle, unused in this function, for function type match + * Return: nothing + */ +static void +_base_put_smid_fast_path_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid, + u16 handle) +{ + Mpi26AtomicRequestDescriptor_t descriptor; + u32 *request = (u32 *)&descriptor; + + descriptor.RequestFlags = MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO; + descriptor.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.SMID = cpu_to_le16(smid); + + writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost); +} + +/** + * _base_put_smid_hi_priority_atomic - send Task Management request to + * firmware using Atomic Request Descriptor + * @ioc: per adapter object + * @smid: system request message index + * @msix_task: msix_task will be same as msix of IO in case of task abort else 0 + * + * Return: nothing. + */ +static void +_base_put_smid_hi_priority_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid, + u16 msix_task) +{ + Mpi26AtomicRequestDescriptor_t descriptor; + u32 *request = (u32 *)&descriptor; + + descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY; + descriptor.MSIxIndex = msix_task; + descriptor.SMID = cpu_to_le16(smid); + + writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost); +} + +/** + * _base_put_smid_default_atomic - Default, primarily used for config pages + * use Atomic Request Descriptor + * @ioc: per adapter object + * @smid: system request message index + * + * Return: nothing. + */ +static void +_base_put_smid_default_atomic(struct MPT3SAS_ADAPTER *ioc, u16 smid) +{ + Mpi26AtomicRequestDescriptor_t descriptor; + u32 *request = (u32 *)&descriptor; + + descriptor.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE; + descriptor.MSIxIndex = _base_set_and_get_msix_index(ioc, smid); + descriptor.SMID = cpu_to_le16(smid); + + writel(cpu_to_le32(*request), &ioc->chip->AtomicRequestDescriptorPost); +} + +/** + * _base_display_OEMs_branding - Display branding string + * @ioc: per adapter object + */ +static void +_base_display_OEMs_branding(struct MPT3SAS_ADAPTER *ioc) +{ + if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) + return; + + switch (ioc->pdev->subsystem_vendor) { + case PCI_VENDOR_ID_INTEL: + switch (ioc->pdev->device) { + case MPI2_MFGPAGE_DEVID_SAS2008: + switch (ioc->pdev->subsystem_device) { + case MPT2SAS_INTEL_RMS2LL080_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS2LL080_BRANDING); + break; + case MPT2SAS_INTEL_RMS2LL040_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS2LL040_BRANDING); + break; + case MPT2SAS_INTEL_SSD910_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_SSD910_BRANDING); + break; + default: + ioc_info(ioc, "Intel(R) Controller: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case MPI2_MFGPAGE_DEVID_SAS2308_2: + switch (ioc->pdev->subsystem_device) { + case MPT2SAS_INTEL_RS25GB008_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RS25GB008_BRANDING); + break; + case MPT2SAS_INTEL_RMS25JB080_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS25JB080_BRANDING); + break; + case MPT2SAS_INTEL_RMS25JB040_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS25JB040_BRANDING); + break; + case MPT2SAS_INTEL_RMS25KB080_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS25KB080_BRANDING); + break; + case MPT2SAS_INTEL_RMS25KB040_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS25KB040_BRANDING); + break; + case MPT2SAS_INTEL_RMS25LB040_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS25LB040_BRANDING); + break; + case MPT2SAS_INTEL_RMS25LB080_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_INTEL_RMS25LB080_BRANDING); + break; + default: + ioc_info(ioc, "Intel(R) Controller: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case MPI25_MFGPAGE_DEVID_SAS3008: + switch (ioc->pdev->subsystem_device) { + case MPT3SAS_INTEL_RMS3JC080_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_INTEL_RMS3JC080_BRANDING); + break; + + case MPT3SAS_INTEL_RS3GC008_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_INTEL_RS3GC008_BRANDING); + break; + case MPT3SAS_INTEL_RS3FC044_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_INTEL_RS3FC044_BRANDING); + break; + case MPT3SAS_INTEL_RS3UC080_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_INTEL_RS3UC080_BRANDING); + break; + default: + ioc_info(ioc, "Intel(R) Controller: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + default: + ioc_info(ioc, "Intel(R) Controller: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case PCI_VENDOR_ID_DELL: + switch (ioc->pdev->device) { + case MPI2_MFGPAGE_DEVID_SAS2008: + switch (ioc->pdev->subsystem_device) { + case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING); + break; + case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING); + break; + case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING); + break; + case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING); + break; + case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING); + break; + case MPT2SAS_DELL_PERC_H200_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_DELL_PERC_H200_BRANDING); + break; + case MPT2SAS_DELL_6GBPS_SAS_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_DELL_6GBPS_SAS_BRANDING); + break; + default: + ioc_info(ioc, "Dell 6Gbps HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case MPI25_MFGPAGE_DEVID_SAS3008: + switch (ioc->pdev->subsystem_device) { + case MPT3SAS_DELL_12G_HBA_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_DELL_12G_HBA_BRANDING); + break; + default: + ioc_info(ioc, "Dell 12Gbps HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + default: + ioc_info(ioc, "Dell HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case PCI_VENDOR_ID_CISCO: + switch (ioc->pdev->device) { + case MPI25_MFGPAGE_DEVID_SAS3008: + switch (ioc->pdev->subsystem_device) { + case MPT3SAS_CISCO_12G_8E_HBA_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_CISCO_12G_8E_HBA_BRANDING); + break; + case MPT3SAS_CISCO_12G_8I_HBA_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_CISCO_12G_8I_HBA_BRANDING); + break; + case MPT3SAS_CISCO_12G_AVILA_HBA_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_CISCO_12G_AVILA_HBA_BRANDING); + break; + default: + ioc_info(ioc, "Cisco 12Gbps SAS HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case MPI25_MFGPAGE_DEVID_SAS3108_1: + switch (ioc->pdev->subsystem_device) { + case MPT3SAS_CISCO_12G_AVILA_HBA_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_CISCO_12G_AVILA_HBA_BRANDING); + break; + case MPT3SAS_CISCO_12G_COLUSA_MEZZANINE_HBA_SSDID: + ioc_info(ioc, "%s\n", + MPT3SAS_CISCO_12G_COLUSA_MEZZANINE_HBA_BRANDING); + break; + default: + ioc_info(ioc, "Cisco 12Gbps SAS HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + default: + ioc_info(ioc, "Cisco SAS HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case MPT2SAS_HP_3PAR_SSVID: + switch (ioc->pdev->device) { + case MPI2_MFGPAGE_DEVID_SAS2004: + switch (ioc->pdev->subsystem_device) { + case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING); + break; + default: + ioc_info(ioc, "HP 6Gbps SAS HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + case MPI2_MFGPAGE_DEVID_SAS2308_2: + switch (ioc->pdev->subsystem_device) { + case MPT2SAS_HP_2_4_INTERNAL_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_HP_2_4_INTERNAL_BRANDING); + break; + case MPT2SAS_HP_2_4_EXTERNAL_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_HP_2_4_EXTERNAL_BRANDING); + break; + case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING); + break; + case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID: + ioc_info(ioc, "%s\n", + MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING); + break; + default: + ioc_info(ioc, "HP 6Gbps SAS HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + default: + ioc_info(ioc, "HP SAS HBA: Subsystem ID: 0x%X\n", + ioc->pdev->subsystem_device); + break; + } + break; + default: + break; + } +} + +/** + * _base_display_fwpkg_version - sends FWUpload request to pull FWPkg + * version from FW Image Header. + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ + static int +_base_display_fwpkg_version(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2FWImageHeader_t *fw_img_hdr; + Mpi26ComponentImageHeader_t *cmp_img_hdr; + Mpi25FWUploadRequest_t *mpi_request; + Mpi2FWUploadReply_t mpi_reply; + int r = 0, issue_diag_reset = 0; + u32 package_version = 0; + void *fwpkg_data = NULL; + dma_addr_t fwpkg_data_dma; + u16 smid, ioc_status; + size_t data_length; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + if (ioc->base_cmds.status & MPT3_CMD_PENDING) { + ioc_err(ioc, "%s: internal command already in use\n", __func__); + return -EAGAIN; + } + + data_length = sizeof(Mpi2FWImageHeader_t); + fwpkg_data = dma_alloc_coherent(&ioc->pdev->dev, data_length, + &fwpkg_data_dma, GFP_KERNEL); + if (!fwpkg_data) { + ioc_err(ioc, + "Memory allocation for fwpkg data failed at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + return -ENOMEM; + } + + smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx); + if (!smid) { + ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); + r = -EAGAIN; + goto out; + } + + ioc->base_cmds.status = MPT3_CMD_PENDING; + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->base_cmds.smid = smid; + memset(mpi_request, 0, sizeof(Mpi25FWUploadRequest_t)); + mpi_request->Function = MPI2_FUNCTION_FW_UPLOAD; + mpi_request->ImageType = MPI2_FW_UPLOAD_ITYPE_FW_FLASH; + mpi_request->ImageSize = cpu_to_le32(data_length); + ioc->build_sg(ioc, &mpi_request->SGL, 0, 0, fwpkg_data_dma, + data_length); + init_completion(&ioc->base_cmds.done); + ioc->put_smid_default(ioc, smid); + /* Wait for 15 seconds */ + wait_for_completion_timeout(&ioc->base_cmds.done, + FW_IMG_HDR_READ_TIMEOUT*HZ); + ioc_info(ioc, "%s: complete\n", __func__); + if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) { + ioc_err(ioc, "%s: timeout\n", __func__); + _debug_dump_mf(mpi_request, + sizeof(Mpi25FWUploadRequest_t)/4); + issue_diag_reset = 1; + } else { + memset(&mpi_reply, 0, sizeof(Mpi2FWUploadReply_t)); + if (ioc->base_cmds.status & MPT3_CMD_REPLY_VALID) { + memcpy(&mpi_reply, ioc->base_cmds.reply, + sizeof(Mpi2FWUploadReply_t)); + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { + fw_img_hdr = (Mpi2FWImageHeader_t *)fwpkg_data; + if (le32_to_cpu(fw_img_hdr->Signature) == + MPI26_IMAGE_HEADER_SIGNATURE0_MPI26) { + cmp_img_hdr = + (Mpi26ComponentImageHeader_t *) + (fwpkg_data); + package_version = + le32_to_cpu( + cmp_img_hdr->ApplicationSpecific); + } else + package_version = + le32_to_cpu( + fw_img_hdr->PackageVersion.Word); + if (package_version) + ioc_info(ioc, + "FW Package Ver(%02d.%02d.%02d.%02d)\n", + ((package_version) & 0xFF000000) >> 24, + ((package_version) & 0x00FF0000) >> 16, + ((package_version) & 0x0000FF00) >> 8, + (package_version) & 0x000000FF); + } else { + _debug_dump_mf(&mpi_reply, + sizeof(Mpi2FWUploadReply_t)/4); + } + } + } + ioc->base_cmds.status = MPT3_CMD_NOT_USED; +out: + if (fwpkg_data) + dma_free_coherent(&ioc->pdev->dev, data_length, fwpkg_data, + fwpkg_data_dma); + if (issue_diag_reset) { + if (ioc->drv_internal_flags & MPT_DRV_INTERNAL_FIRST_PE_ISSUED) + return -EFAULT; + if (mpt3sas_base_check_for_fault_and_issue_reset(ioc)) + return -EFAULT; + r = -EAGAIN; + } + return r; +} + +/** + * _base_display_ioc_capabilities - Display IOC's capabilities. + * @ioc: per adapter object + */ +static void +_base_display_ioc_capabilities(struct MPT3SAS_ADAPTER *ioc) +{ + int i = 0; + char desc[17] = {0}; + u32 iounit_pg1_flags; + + strncpy(desc, ioc->manu_pg0.ChipName, 16); + ioc_info(ioc, "%s: FWVersion(%02d.%02d.%02d.%02d), ChipRevision(0x%02x)\n", + desc, + (ioc->facts.FWVersion.Word & 0xFF000000) >> 24, + (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16, + (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8, + ioc->facts.FWVersion.Word & 0x000000FF, + ioc->pdev->revision); + + _base_display_OEMs_branding(ioc); + + if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_NVME_DEVICES) { + pr_info("%sNVMe", i ? "," : ""); + i++; + } + + ioc_info(ioc, "Protocol=("); + + if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) { + pr_cont("Initiator"); + i++; + } + + if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) { + pr_cont("%sTarget", i ? "," : ""); + i++; + } + + i = 0; + pr_cont("), Capabilities=("); + + if (!ioc->hide_ir_msg) { + if (ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) { + pr_cont("Raid"); + i++; + } + } + + if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) { + pr_cont("%sTLR", i ? "," : ""); + i++; + } + + if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) { + pr_cont("%sMulticast", i ? "," : ""); + i++; + } + + if (ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) { + pr_cont("%sBIDI Target", i ? "," : ""); + i++; + } + + if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) { + pr_cont("%sEEDP", i ? "," : ""); + i++; + } + + if (ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) { + pr_cont("%sSnapshot Buffer", i ? "," : ""); + i++; + } + + if (ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) { + pr_cont("%sDiag Trace Buffer", i ? "," : ""); + i++; + } + + if (ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) { + pr_cont("%sDiag Extended Buffer", i ? "," : ""); + i++; + } + + if (ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) { + pr_cont("%sTask Set Full", i ? "," : ""); + i++; + } + + iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags); + if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) { + pr_cont("%sNCQ", i ? "," : ""); + i++; + } + + pr_cont(")\n"); +} + +/** + * mpt3sas_base_update_missing_delay - change the missing delay timers + * @ioc: per adapter object + * @device_missing_delay: amount of time till device is reported missing + * @io_missing_delay: interval IO is returned when there is a missing device + * + * Passed on the command line, this function will modify the device missing + * delay, as well as the io missing delay. This should be called at driver + * load time. + */ +void +mpt3sas_base_update_missing_delay(struct MPT3SAS_ADAPTER *ioc, + u16 device_missing_delay, u8 io_missing_delay) +{ + u16 dmd, dmd_new, dmd_orignal; + u8 io_missing_delay_original; + u16 sz; + Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL; + Mpi2ConfigReply_t mpi_reply; + u8 num_phys = 0; + u16 ioc_status; + + mpt3sas_config_get_number_hba_phys(ioc, &num_phys); + if (!num_phys) + return; + + sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys * + sizeof(Mpi2SasIOUnit1PhyData_t)); + sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL); + if (!sas_iounit_pg1) { + ioc_err(ioc, "failure at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + goto out; + } + if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply, + sas_iounit_pg1, sz))) { + ioc_err(ioc, "failure at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + goto out; + } + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { + ioc_err(ioc, "failure at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + goto out; + } + + /* device missing delay */ + dmd = sas_iounit_pg1->ReportDeviceMissingDelay; + if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16) + dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16; + else + dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK; + dmd_orignal = dmd; + if (device_missing_delay > 0x7F) { + dmd = (device_missing_delay > 0x7F0) ? 0x7F0 : + device_missing_delay; + dmd = dmd / 16; + dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16; + } else + dmd = device_missing_delay; + sas_iounit_pg1->ReportDeviceMissingDelay = dmd; + + /* io missing delay */ + io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay; + sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay; + + if (!mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, + sz)) { + if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16) + dmd_new = (dmd & + MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16; + else + dmd_new = + dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK; + ioc_info(ioc, "device_missing_delay: old(%d), new(%d)\n", + dmd_orignal, dmd_new); + ioc_info(ioc, "ioc_missing_delay: old(%d), new(%d)\n", + io_missing_delay_original, + io_missing_delay); + ioc->device_missing_delay = dmd_new; + ioc->io_missing_delay = io_missing_delay; + } + +out: + kfree(sas_iounit_pg1); +} + +/** + * _base_update_ioc_page1_inlinewith_perf_mode - Update IOC Page1 fields + * according to performance mode. + * @ioc : per adapter object + * + * Return: zero on success; otherwise return EAGAIN error code asking the + * caller to retry. + */ +static int +_base_update_ioc_page1_inlinewith_perf_mode(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2IOCPage1_t ioc_pg1; + Mpi2ConfigReply_t mpi_reply; + int rc; + + rc = mpt3sas_config_get_ioc_pg1(ioc, &mpi_reply, &ioc->ioc_pg1_copy); + if (rc) + return rc; + memcpy(&ioc_pg1, &ioc->ioc_pg1_copy, sizeof(Mpi2IOCPage1_t)); + + switch (perf_mode) { + case MPT_PERF_MODE_DEFAULT: + case MPT_PERF_MODE_BALANCED: + if (ioc->high_iops_queues) { + ioc_info(ioc, + "Enable interrupt coalescing only for first\t" + "%d reply queues\n", + MPT3SAS_HIGH_IOPS_REPLY_QUEUES); + /* + * If 31st bit is zero then interrupt coalescing is + * enabled for all reply descriptor post queues. + * If 31st bit is set to one then user can + * enable/disable interrupt coalescing on per reply + * descriptor post queue group(8) basis. So to enable + * interrupt coalescing only on first reply descriptor + * post queue group 31st bit and zero th bit is enabled. + */ + ioc_pg1.ProductSpecific = cpu_to_le32(0x80000000 | + ((1 << MPT3SAS_HIGH_IOPS_REPLY_QUEUES/8) - 1)); + rc = mpt3sas_config_set_ioc_pg1(ioc, &mpi_reply, &ioc_pg1); + if (rc) + return rc; + ioc_info(ioc, "performance mode: balanced\n"); + return 0; + } + fallthrough; + case MPT_PERF_MODE_LATENCY: + /* + * Enable interrupt coalescing on all reply queues + * with timeout value 0xA + */ + ioc_pg1.CoalescingTimeout = cpu_to_le32(0xa); + ioc_pg1.Flags |= cpu_to_le32(MPI2_IOCPAGE1_REPLY_COALESCING); + ioc_pg1.ProductSpecific = 0; + rc = mpt3sas_config_set_ioc_pg1(ioc, &mpi_reply, &ioc_pg1); + if (rc) + return rc; + ioc_info(ioc, "performance mode: latency\n"); + break; + case MPT_PERF_MODE_IOPS: + /* + * Enable interrupt coalescing on all reply queues. + */ + ioc_info(ioc, + "performance mode: iops with coalescing timeout: 0x%x\n", + le32_to_cpu(ioc_pg1.CoalescingTimeout)); + ioc_pg1.Flags |= cpu_to_le32(MPI2_IOCPAGE1_REPLY_COALESCING); + ioc_pg1.ProductSpecific = 0; + rc = mpt3sas_config_set_ioc_pg1(ioc, &mpi_reply, &ioc_pg1); + if (rc) + return rc; + break; + } + return 0; +} + +/** + * _base_get_event_diag_triggers - get event diag trigger values from + * persistent pages + * @ioc : per adapter object + * + * Return: nothing. + */ +static int +_base_get_event_diag_triggers(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi26DriverTriggerPage2_t trigger_pg2; + struct SL_WH_EVENT_TRIGGER_T *event_tg; + MPI26_DRIVER_MPI_EVENT_TIGGER_ENTRY *mpi_event_tg; + Mpi2ConfigReply_t mpi_reply; + int r = 0, i = 0; + u16 count = 0; + u16 ioc_status; + + r = mpt3sas_config_get_driver_trigger_pg2(ioc, &mpi_reply, + &trigger_pg2); + if (r) + return r; + + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { + dinitprintk(ioc, + ioc_err(ioc, + "%s: Failed to get trigger pg2, ioc_status(0x%04x)\n", + __func__, ioc_status)); + return 0; + } + + if (le16_to_cpu(trigger_pg2.NumMPIEventTrigger)) { + count = le16_to_cpu(trigger_pg2.NumMPIEventTrigger); + count = min_t(u16, NUM_VALID_ENTRIES, count); + ioc->diag_trigger_event.ValidEntries = count; + + event_tg = &ioc->diag_trigger_event.EventTriggerEntry[0]; + mpi_event_tg = &trigger_pg2.MPIEventTriggers[0]; + for (i = 0; i < count; i++) { + event_tg->EventValue = le16_to_cpu( + mpi_event_tg->MPIEventCode); + event_tg->LogEntryQualifier = le16_to_cpu( + mpi_event_tg->MPIEventCodeSpecific); + event_tg++; + mpi_event_tg++; + } + } + return 0; +} + +/** + * _base_get_scsi_diag_triggers - get scsi diag trigger values from + * persistent pages + * @ioc : per adapter object + * + * Return: 0 on success; otherwise return failure status. + */ +static int +_base_get_scsi_diag_triggers(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi26DriverTriggerPage3_t trigger_pg3; + struct SL_WH_SCSI_TRIGGER_T *scsi_tg; + MPI26_DRIVER_SCSI_SENSE_TIGGER_ENTRY *mpi_scsi_tg; + Mpi2ConfigReply_t mpi_reply; + int r = 0, i = 0; + u16 count = 0; + u16 ioc_status; + + r = mpt3sas_config_get_driver_trigger_pg3(ioc, &mpi_reply, + &trigger_pg3); + if (r) + return r; + + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { + dinitprintk(ioc, + ioc_err(ioc, + "%s: Failed to get trigger pg3, ioc_status(0x%04x)\n", + __func__, ioc_status)); + return 0; + } + + if (le16_to_cpu(trigger_pg3.NumSCSISenseTrigger)) { + count = le16_to_cpu(trigger_pg3.NumSCSISenseTrigger); + count = min_t(u16, NUM_VALID_ENTRIES, count); + ioc->diag_trigger_scsi.ValidEntries = count; + + scsi_tg = &ioc->diag_trigger_scsi.SCSITriggerEntry[0]; + mpi_scsi_tg = &trigger_pg3.SCSISenseTriggers[0]; + for (i = 0; i < count; i++) { + scsi_tg->ASCQ = mpi_scsi_tg->ASCQ; + scsi_tg->ASC = mpi_scsi_tg->ASC; + scsi_tg->SenseKey = mpi_scsi_tg->SenseKey; + + scsi_tg++; + mpi_scsi_tg++; + } + } + return 0; +} + +/** + * _base_get_mpi_diag_triggers - get mpi diag trigger values from + * persistent pages + * @ioc : per adapter object + * + * Return: 0 on success; otherwise return failure status. + */ +static int +_base_get_mpi_diag_triggers(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi26DriverTriggerPage4_t trigger_pg4; + struct SL_WH_MPI_TRIGGER_T *status_tg; + MPI26_DRIVER_IOCSTATUS_LOGINFO_TIGGER_ENTRY *mpi_status_tg; + Mpi2ConfigReply_t mpi_reply; + int r = 0, i = 0; + u16 count = 0; + u16 ioc_status; + + r = mpt3sas_config_get_driver_trigger_pg4(ioc, &mpi_reply, + &trigger_pg4); + if (r) + return r; + + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { + dinitprintk(ioc, + ioc_err(ioc, + "%s: Failed to get trigger pg4, ioc_status(0x%04x)\n", + __func__, ioc_status)); + return 0; + } + + if (le16_to_cpu(trigger_pg4.NumIOCStatusLogInfoTrigger)) { + count = le16_to_cpu(trigger_pg4.NumIOCStatusLogInfoTrigger); + count = min_t(u16, NUM_VALID_ENTRIES, count); + ioc->diag_trigger_mpi.ValidEntries = count; + + status_tg = &ioc->diag_trigger_mpi.MPITriggerEntry[0]; + mpi_status_tg = &trigger_pg4.IOCStatusLoginfoTriggers[0]; + + for (i = 0; i < count; i++) { + status_tg->IOCStatus = le16_to_cpu( + mpi_status_tg->IOCStatus); + status_tg->IocLogInfo = le32_to_cpu( + mpi_status_tg->LogInfo); + + status_tg++; + mpi_status_tg++; + } + } + return 0; +} + +/** + * _base_get_master_diag_triggers - get master diag trigger values from + * persistent pages + * @ioc : per adapter object + * + * Return: nothing. + */ +static int +_base_get_master_diag_triggers(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi26DriverTriggerPage1_t trigger_pg1; + Mpi2ConfigReply_t mpi_reply; + int r; + u16 ioc_status; + + r = mpt3sas_config_get_driver_trigger_pg1(ioc, &mpi_reply, + &trigger_pg1); + if (r) + return r; + + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { + dinitprintk(ioc, + ioc_err(ioc, + "%s: Failed to get trigger pg1, ioc_status(0x%04x)\n", + __func__, ioc_status)); + return 0; + } + + if (le16_to_cpu(trigger_pg1.NumMasterTrigger)) + ioc->diag_trigger_master.MasterData |= + le32_to_cpu( + trigger_pg1.MasterTriggers[0].MasterTriggerFlags); + return 0; +} + +/** + * _base_check_for_trigger_pages_support - checks whether HBA FW supports + * driver trigger pages or not + * @ioc : per adapter object + * @trigger_flags : address where trigger page0's TriggerFlags value is copied + * + * Return: trigger flags mask if HBA FW supports driver trigger pages; + * otherwise returns %-EFAULT if driver trigger pages are not supported by FW or + * return EAGAIN if diag reset occurred due to FW fault and asking the + * caller to retry the command. + * + */ +static int +_base_check_for_trigger_pages_support(struct MPT3SAS_ADAPTER *ioc, u32 *trigger_flags) +{ + Mpi26DriverTriggerPage0_t trigger_pg0; + int r = 0; + Mpi2ConfigReply_t mpi_reply; + u16 ioc_status; + + r = mpt3sas_config_get_driver_trigger_pg0(ioc, &mpi_reply, + &trigger_pg0); + if (r) + return r; + + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & + MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) + return -EFAULT; + + *trigger_flags = le16_to_cpu(trigger_pg0.TriggerFlags); + return 0; +} + +/** + * _base_get_diag_triggers - Retrieve diag trigger values from + * persistent pages. + * @ioc : per adapter object + * + * Return: zero on success; otherwise return EAGAIN error codes + * asking the caller to retry. + */ +static int +_base_get_diag_triggers(struct MPT3SAS_ADAPTER *ioc) +{ + int trigger_flags; + int r; + + /* + * Default setting of master trigger. + */ + ioc->diag_trigger_master.MasterData = + (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET); + + r = _base_check_for_trigger_pages_support(ioc, &trigger_flags); + if (r) { + if (r == -EAGAIN) + return r; + /* + * Don't go for error handling when FW doesn't support + * driver trigger pages. + */ + return 0; + } + + ioc->supports_trigger_pages = 1; + + /* + * Retrieve master diag trigger values from driver trigger pg1 + * if master trigger bit enabled in TriggerFlags. + */ + if ((u16)trigger_flags & + MPI26_DRIVER_TRIGGER0_FLAG_MASTER_TRIGGER_VALID) { + r = _base_get_master_diag_triggers(ioc); + if (r) + return r; + } + + /* + * Retrieve event diag trigger values from driver trigger pg2 + * if event trigger bit enabled in TriggerFlags. + */ + if ((u16)trigger_flags & + MPI26_DRIVER_TRIGGER0_FLAG_MPI_EVENT_TRIGGER_VALID) { + r = _base_get_event_diag_triggers(ioc); + if (r) + return r; + } + + /* + * Retrieve scsi diag trigger values from driver trigger pg3 + * if scsi trigger bit enabled in TriggerFlags. + */ + if ((u16)trigger_flags & + MPI26_DRIVER_TRIGGER0_FLAG_SCSI_SENSE_TRIGGER_VALID) { + r = _base_get_scsi_diag_triggers(ioc); + if (r) + return r; + } + /* + * Retrieve mpi error diag trigger values from driver trigger pg4 + * if loginfo trigger bit enabled in TriggerFlags. + */ + if ((u16)trigger_flags & + MPI26_DRIVER_TRIGGER0_FLAG_LOGINFO_TRIGGER_VALID) { + r = _base_get_mpi_diag_triggers(ioc); + if (r) + return r; + } + return 0; +} + +/** + * _base_update_diag_trigger_pages - Update the driver trigger pages after + * online FW update, in case updated FW supports driver + * trigger pages. + * @ioc : per adapter object + * + * Return: nothing. + */ +static void +_base_update_diag_trigger_pages(struct MPT3SAS_ADAPTER *ioc) +{ + + if (ioc->diag_trigger_master.MasterData) + mpt3sas_config_update_driver_trigger_pg1(ioc, + &ioc->diag_trigger_master, 1); + + if (ioc->diag_trigger_event.ValidEntries) + mpt3sas_config_update_driver_trigger_pg2(ioc, + &ioc->diag_trigger_event, 1); + + if (ioc->diag_trigger_scsi.ValidEntries) + mpt3sas_config_update_driver_trigger_pg3(ioc, + &ioc->diag_trigger_scsi, 1); + + if (ioc->diag_trigger_mpi.ValidEntries) + mpt3sas_config_update_driver_trigger_pg4(ioc, + &ioc->diag_trigger_mpi, 1); +} + +/** + * _base_assign_fw_reported_qd - Get FW reported QD for SAS/SATA devices. + * - On failure set default QD values. + * @ioc : per adapter object + * + * Returns 0 for success, non-zero for failure. + * + */ +static int _base_assign_fw_reported_qd(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2ConfigReply_t mpi_reply; + Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL; + Mpi26PCIeIOUnitPage1_t pcie_iounit_pg1; + u16 depth; + int sz; + int rc = 0; + + ioc->max_wideport_qd = MPT3SAS_SAS_QUEUE_DEPTH; + ioc->max_narrowport_qd = MPT3SAS_SAS_QUEUE_DEPTH; + ioc->max_sata_qd = MPT3SAS_SATA_QUEUE_DEPTH; + ioc->max_nvme_qd = MPT3SAS_NVME_QUEUE_DEPTH; + if (!ioc->is_gen35_ioc) + goto out; + /* sas iounit page 1 */ + sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData); + sas_iounit_pg1 = kzalloc(sizeof(Mpi2SasIOUnitPage1_t), GFP_KERNEL); + if (!sas_iounit_pg1) { + pr_err("%s: failure at %s:%d/%s()!\n", + ioc->name, __FILE__, __LINE__, __func__); + return rc; + } + rc = mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply, + sas_iounit_pg1, sz); + if (rc) { + pr_err("%s: failure at %s:%d/%s()!\n", + ioc->name, __FILE__, __LINE__, __func__); + goto out; + } + + depth = le16_to_cpu(sas_iounit_pg1->SASWideMaxQueueDepth); + ioc->max_wideport_qd = (depth ? depth : MPT3SAS_SAS_QUEUE_DEPTH); + + depth = le16_to_cpu(sas_iounit_pg1->SASNarrowMaxQueueDepth); + ioc->max_narrowport_qd = (depth ? depth : MPT3SAS_SAS_QUEUE_DEPTH); + + depth = sas_iounit_pg1->SATAMaxQDepth; + ioc->max_sata_qd = (depth ? depth : MPT3SAS_SATA_QUEUE_DEPTH); + + /* pcie iounit page 1 */ + rc = mpt3sas_config_get_pcie_iounit_pg1(ioc, &mpi_reply, + &pcie_iounit_pg1, sizeof(Mpi26PCIeIOUnitPage1_t)); + if (rc) { + pr_err("%s: failure at %s:%d/%s()!\n", + ioc->name, __FILE__, __LINE__, __func__); + goto out; + } + ioc->max_nvme_qd = (le16_to_cpu(pcie_iounit_pg1.NVMeMaxQueueDepth)) ? + (le16_to_cpu(pcie_iounit_pg1.NVMeMaxQueueDepth)) : + MPT3SAS_NVME_QUEUE_DEPTH; +out: + dinitprintk(ioc, pr_err( + "MaxWidePortQD: 0x%x MaxNarrowPortQD: 0x%x MaxSataQD: 0x%x MaxNvmeQD: 0x%x\n", + ioc->max_wideport_qd, ioc->max_narrowport_qd, + ioc->max_sata_qd, ioc->max_nvme_qd)); + kfree(sas_iounit_pg1); + return rc; +} + +/** + * mpt3sas_atto_validate_nvram - validate the ATTO nvram read from mfg pg1 + * + * @ioc : per adapter object + * @n : ptr to the ATTO nvram structure + * Return: 0 for success, non-zero for failure. + */ +static int +mpt3sas_atto_validate_nvram(struct MPT3SAS_ADAPTER *ioc, + struct ATTO_SAS_NVRAM *n) +{ + int r = -EINVAL; + union ATTO_SAS_ADDRESS *s1; + u32 len; + u8 *pb; + u8 ckSum; + + /* validate nvram checksum */ + pb = (u8 *) n; + ckSum = ATTO_SASNVR_CKSUM_SEED; + len = sizeof(struct ATTO_SAS_NVRAM); + + while (len--) + ckSum = ckSum + pb[len]; + + if (ckSum) { + ioc_err(ioc, "Invalid ATTO NVRAM checksum\n"); + return r; + } + + s1 = (union ATTO_SAS_ADDRESS *) n->SasAddr; + + if (n->Signature[0] != 'E' + || n->Signature[1] != 'S' + || n->Signature[2] != 'A' + || n->Signature[3] != 'S') + ioc_err(ioc, "Invalid ATTO NVRAM signature\n"); + else if (n->Version > ATTO_SASNVR_VERSION) + ioc_info(ioc, "Invalid ATTO NVRAM version"); + else if ((n->SasAddr[7] & (ATTO_SAS_ADDR_ALIGN - 1)) + || s1->b[0] != 0x50 + || s1->b[1] != 0x01 + || s1->b[2] != 0x08 + || (s1->b[3] & 0xF0) != 0x60 + || ((s1->b[3] & 0x0F) | le32_to_cpu(s1->d[1])) == 0) { + ioc_err(ioc, "Invalid ATTO SAS address\n"); + } else + r = 0; + return r; +} + +/** + * mpt3sas_atto_get_sas_addr - get the ATTO SAS address from mfg page 1 + * + * @ioc : per adapter object + * @*sas_addr : return sas address + * Return: 0 for success, non-zero for failure. + */ +static int +mpt3sas_atto_get_sas_addr(struct MPT3SAS_ADAPTER *ioc, union ATTO_SAS_ADDRESS *sas_addr) +{ + Mpi2ManufacturingPage1_t mfg_pg1; + Mpi2ConfigReply_t mpi_reply; + struct ATTO_SAS_NVRAM *nvram; + int r; + __be64 addr; + + r = mpt3sas_config_get_manufacturing_pg1(ioc, &mpi_reply, &mfg_pg1); + if (r) { + ioc_err(ioc, "Failed to read manufacturing page 1\n"); + return r; + } + + /* validate nvram */ + nvram = (struct ATTO_SAS_NVRAM *) mfg_pg1.VPD; + r = mpt3sas_atto_validate_nvram(ioc, nvram); + if (r) + return r; + + addr = *((__be64 *) nvram->SasAddr); + sas_addr->q = cpu_to_le64(be64_to_cpu(addr)); + return r; +} + +/** + * mpt3sas_atto_init - perform initializaion for ATTO branded + * adapter. + * @ioc : per adapter object + *5 + * Return: 0 for success, non-zero for failure. + */ +static int +mpt3sas_atto_init(struct MPT3SAS_ADAPTER *ioc) +{ + int sz = 0; + Mpi2BiosPage4_t *bios_pg4 = NULL; + Mpi2ConfigReply_t mpi_reply; + int r; + int ix; + union ATTO_SAS_ADDRESS sas_addr; + union ATTO_SAS_ADDRESS temp; + union ATTO_SAS_ADDRESS bias; + + r = mpt3sas_atto_get_sas_addr(ioc, &sas_addr); + if (r) + return r; + + /* get header first to get size */ + r = mpt3sas_config_get_bios_pg4(ioc, &mpi_reply, NULL, 0); + if (r) { + ioc_err(ioc, "Failed to read ATTO bios page 4 header.\n"); + return r; + } + + sz = mpi_reply.Header.PageLength * sizeof(u32); + bios_pg4 = kzalloc(sz, GFP_KERNEL); + if (!bios_pg4) { + ioc_err(ioc, "Failed to allocate memory for ATTO bios page.\n"); + return -ENOMEM; + } + + /* read bios page 4 */ + r = mpt3sas_config_get_bios_pg4(ioc, &mpi_reply, bios_pg4, sz); + if (r) { + ioc_err(ioc, "Failed to read ATTO bios page 4\n"); + goto out; + } + + /* Update bios page 4 with the ATTO WWID */ + bias.q = sas_addr.q; + bias.b[7] += ATTO_SAS_ADDR_DEVNAME_BIAS; + + for (ix = 0; ix < bios_pg4->NumPhys; ix++) { + temp.q = sas_addr.q; + temp.b[7] += ix; + bios_pg4->Phy[ix].ReassignmentWWID = temp.q; + bios_pg4->Phy[ix].ReassignmentDeviceName = bias.q; + } + r = mpt3sas_config_set_bios_pg4(ioc, &mpi_reply, bios_pg4, sz); + +out: + kfree(bios_pg4); + return r; +} + +/** + * _base_static_config_pages - static start of day config pages + * @ioc: per adapter object + */ +static int +_base_static_config_pages(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2ConfigReply_t mpi_reply; + u32 iounit_pg1_flags; + int tg_flags = 0; + int rc; + ioc->nvme_abort_timeout = 30; + + rc = mpt3sas_config_get_manufacturing_pg0(ioc, &mpi_reply, + &ioc->manu_pg0); + if (rc) + return rc; + if (ioc->ir_firmware) { + rc = mpt3sas_config_get_manufacturing_pg10(ioc, &mpi_reply, + &ioc->manu_pg10); + if (rc) + return rc; + } + + if (ioc->pdev->vendor == MPI2_MFGPAGE_VENDORID_ATTO) { + rc = mpt3sas_atto_init(ioc); + if (rc) + return rc; + } + + /* + * Ensure correct T10 PI operation if vendor left EEDPTagMode + * flag unset in NVDATA. + */ + rc = mpt3sas_config_get_manufacturing_pg11(ioc, &mpi_reply, + &ioc->manu_pg11); + if (rc) + return rc; + if (!ioc->is_gen35_ioc && ioc->manu_pg11.EEDPTagMode == 0) { + pr_err("%s: overriding NVDATA EEDPTagMode setting\n", + ioc->name); + ioc->manu_pg11.EEDPTagMode &= ~0x3; + ioc->manu_pg11.EEDPTagMode |= 0x1; + mpt3sas_config_set_manufacturing_pg11(ioc, &mpi_reply, + &ioc->manu_pg11); + } + if (ioc->manu_pg11.AddlFlags2 & NVME_TASK_MNGT_CUSTOM_MASK) + ioc->tm_custom_handling = 1; + else { + ioc->tm_custom_handling = 0; + if (ioc->manu_pg11.NVMeAbortTO < NVME_TASK_ABORT_MIN_TIMEOUT) + ioc->nvme_abort_timeout = NVME_TASK_ABORT_MIN_TIMEOUT; + else if (ioc->manu_pg11.NVMeAbortTO > + NVME_TASK_ABORT_MAX_TIMEOUT) + ioc->nvme_abort_timeout = NVME_TASK_ABORT_MAX_TIMEOUT; + else + ioc->nvme_abort_timeout = ioc->manu_pg11.NVMeAbortTO; + } + ioc->time_sync_interval = + ioc->manu_pg11.TimeSyncInterval & MPT3SAS_TIMESYNC_MASK; + if (ioc->time_sync_interval) { + if (ioc->manu_pg11.TimeSyncInterval & MPT3SAS_TIMESYNC_UNIT_MASK) + ioc->time_sync_interval = + ioc->time_sync_interval * SECONDS_PER_HOUR; + else + ioc->time_sync_interval = + ioc->time_sync_interval * SECONDS_PER_MIN; + dinitprintk(ioc, ioc_info(ioc, + "Driver-FW TimeSync interval is %d seconds. ManuPg11 TimeSync Unit is in %s\n", + ioc->time_sync_interval, (ioc->manu_pg11.TimeSyncInterval & + MPT3SAS_TIMESYNC_UNIT_MASK) ? "Hour" : "Minute")); + } else { + if (ioc->is_gen35_ioc) + ioc_warn(ioc, + "TimeSync Interval in Manuf page-11 is not enabled. Periodic Time-Sync will be disabled\n"); + } + rc = _base_assign_fw_reported_qd(ioc); + if (rc) + return rc; + + /* + * ATTO doesn't use bios page 2 and 3 for bios settings. + */ + if (ioc->pdev->vendor == MPI2_MFGPAGE_VENDORID_ATTO) + ioc->bios_pg3.BiosVersion = 0; + else { + rc = mpt3sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2); + if (rc) + return rc; + rc = mpt3sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3); + if (rc) + return rc; + } + + rc = mpt3sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8); + if (rc) + return rc; + rc = mpt3sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0); + if (rc) + return rc; + rc = mpt3sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1); + if (rc) + return rc; + rc = mpt3sas_config_get_iounit_pg8(ioc, &mpi_reply, &ioc->iounit_pg8); + if (rc) + return rc; + _base_display_ioc_capabilities(ioc); + + /* + * Enable task_set_full handling in iounit_pg1 when the + * facts capabilities indicate that its supported. + */ + iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags); + if ((ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING)) + iounit_pg1_flags &= + ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING; + else + iounit_pg1_flags |= + MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING; + ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags); + rc = mpt3sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1); + if (rc) + return rc; + + if (ioc->iounit_pg8.NumSensors) + ioc->temp_sensors_count = ioc->iounit_pg8.NumSensors; + if (ioc->is_aero_ioc) { + rc = _base_update_ioc_page1_inlinewith_perf_mode(ioc); + if (rc) + return rc; + } + if (ioc->is_gen35_ioc) { + if (ioc->is_driver_loading) { + rc = _base_get_diag_triggers(ioc); + if (rc) + return rc; + } else { + /* + * In case of online HBA FW update operation, + * check whether updated FW supports the driver trigger + * pages or not. + * - If previous FW has not supported driver trigger + * pages and newer FW supports them then update these + * pages with current diag trigger values. + * - If previous FW has supported driver trigger pages + * and new FW doesn't support them then disable + * support_trigger_pages flag. + */ + _base_check_for_trigger_pages_support(ioc, &tg_flags); + if (!ioc->supports_trigger_pages && tg_flags != -EFAULT) + _base_update_diag_trigger_pages(ioc); + else if (ioc->supports_trigger_pages && + tg_flags == -EFAULT) + ioc->supports_trigger_pages = 0; + } + } + return 0; +} + +/** + * mpt3sas_free_enclosure_list - release memory + * @ioc: per adapter object + * + * Free memory allocated during enclosure add. + */ +void +mpt3sas_free_enclosure_list(struct MPT3SAS_ADAPTER *ioc) +{ + struct _enclosure_node *enclosure_dev, *enclosure_dev_next; + + /* Free enclosure list */ + list_for_each_entry_safe(enclosure_dev, + enclosure_dev_next, &ioc->enclosure_list, list) { + list_del(&enclosure_dev->list); + kfree(enclosure_dev); + } +} + +/** + * _base_release_memory_pools - release memory + * @ioc: per adapter object + * + * Free memory allocated from _base_allocate_memory_pools. + */ +static void +_base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc) +{ + int i = 0; + int j = 0; + int dma_alloc_count = 0; + struct chain_tracker *ct; + int count = ioc->rdpq_array_enable ? ioc->reply_queue_count : 1; + + dexitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + if (ioc->request) { + dma_free_coherent(&ioc->pdev->dev, ioc->request_dma_sz, + ioc->request, ioc->request_dma); + dexitprintk(ioc, + ioc_info(ioc, "request_pool(0x%p): free\n", + ioc->request)); + ioc->request = NULL; + } + + if (ioc->sense) { + dma_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma); + dma_pool_destroy(ioc->sense_dma_pool); + dexitprintk(ioc, + ioc_info(ioc, "sense_pool(0x%p): free\n", + ioc->sense)); + ioc->sense = NULL; + } + + if (ioc->reply) { + dma_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma); + dma_pool_destroy(ioc->reply_dma_pool); + dexitprintk(ioc, + ioc_info(ioc, "reply_pool(0x%p): free\n", + ioc->reply)); + ioc->reply = NULL; + } + + if (ioc->reply_free) { + dma_pool_free(ioc->reply_free_dma_pool, ioc->reply_free, + ioc->reply_free_dma); + dma_pool_destroy(ioc->reply_free_dma_pool); + dexitprintk(ioc, + ioc_info(ioc, "reply_free_pool(0x%p): free\n", + ioc->reply_free)); + ioc->reply_free = NULL; + } + + if (ioc->reply_post) { + dma_alloc_count = DIV_ROUND_UP(count, + RDPQ_MAX_INDEX_IN_ONE_CHUNK); + for (i = 0; i < count; i++) { + if (i % RDPQ_MAX_INDEX_IN_ONE_CHUNK == 0 + && dma_alloc_count) { + if (ioc->reply_post[i].reply_post_free) { + dma_pool_free( + ioc->reply_post_free_dma_pool, + ioc->reply_post[i].reply_post_free, + ioc->reply_post[i].reply_post_free_dma); + dexitprintk(ioc, ioc_info(ioc, + "reply_post_free_pool(0x%p): free\n", + ioc->reply_post[i].reply_post_free)); + ioc->reply_post[i].reply_post_free = + NULL; + } + --dma_alloc_count; + } + } + dma_pool_destroy(ioc->reply_post_free_dma_pool); + if (ioc->reply_post_free_array && + ioc->rdpq_array_enable) { + dma_pool_free(ioc->reply_post_free_array_dma_pool, + ioc->reply_post_free_array, + ioc->reply_post_free_array_dma); + ioc->reply_post_free_array = NULL; + } + dma_pool_destroy(ioc->reply_post_free_array_dma_pool); + kfree(ioc->reply_post); + } + + if (ioc->pcie_sgl_dma_pool) { + for (i = 0; i < ioc->scsiio_depth; i++) { + dma_pool_free(ioc->pcie_sgl_dma_pool, + ioc->pcie_sg_lookup[i].pcie_sgl, + ioc->pcie_sg_lookup[i].pcie_sgl_dma); + ioc->pcie_sg_lookup[i].pcie_sgl = NULL; + } + dma_pool_destroy(ioc->pcie_sgl_dma_pool); + } + kfree(ioc->pcie_sg_lookup); + ioc->pcie_sg_lookup = NULL; + + if (ioc->config_page) { + dexitprintk(ioc, + ioc_info(ioc, "config_page(0x%p): free\n", + ioc->config_page)); + dma_free_coherent(&ioc->pdev->dev, ioc->config_page_sz, + ioc->config_page, ioc->config_page_dma); + } + + kfree(ioc->hpr_lookup); + ioc->hpr_lookup = NULL; + kfree(ioc->internal_lookup); + ioc->internal_lookup = NULL; + if (ioc->chain_lookup) { + for (i = 0; i < ioc->scsiio_depth; i++) { + for (j = ioc->chains_per_prp_buffer; + j < ioc->chains_needed_per_io; j++) { + ct = &ioc->chain_lookup[i].chains_per_smid[j]; + if (ct && ct->chain_buffer) + dma_pool_free(ioc->chain_dma_pool, + ct->chain_buffer, + ct->chain_buffer_dma); + } + kfree(ioc->chain_lookup[i].chains_per_smid); + } + dma_pool_destroy(ioc->chain_dma_pool); + kfree(ioc->chain_lookup); + ioc->chain_lookup = NULL; + } + + kfree(ioc->io_queue_num); + ioc->io_queue_num = NULL; +} + +/** + * mpt3sas_check_same_4gb_region - checks whether all reply queues in a set are + * having same upper 32bits in their base memory address. + * @start_address: Base address of a reply queue set + * @pool_sz: Size of single Reply Descriptor Post Queues pool size + * + * Return: 1 if reply queues in a set have a same upper 32bits in their base + * memory address, else 0. + */ +static int +mpt3sas_check_same_4gb_region(dma_addr_t start_address, u32 pool_sz) +{ + dma_addr_t end_address; + + end_address = start_address + pool_sz - 1; + + if (upper_32_bits(start_address) == upper_32_bits(end_address)) + return 1; + else + return 0; +} + +/** + * _base_reduce_hba_queue_depth- Retry with reduced queue depth + * @ioc: Adapter object + * + * Return: 0 for success, non-zero for failure. + **/ +static inline int +_base_reduce_hba_queue_depth(struct MPT3SAS_ADAPTER *ioc) +{ + int reduce_sz = 64; + + if ((ioc->hba_queue_depth - reduce_sz) > + (ioc->internal_depth + INTERNAL_SCSIIO_CMDS_COUNT)) { + ioc->hba_queue_depth -= reduce_sz; + return 0; + } else + return -ENOMEM; +} + +/** + * _base_allocate_pcie_sgl_pool - Allocating DMA'able memory + * for pcie sgl pools. + * @ioc: Adapter object + * @sz: DMA Pool size + * + * Return: 0 for success, non-zero for failure. + */ + +static int +_base_allocate_pcie_sgl_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) +{ + int i = 0, j = 0; + struct chain_tracker *ct; + + ioc->pcie_sgl_dma_pool = + dma_pool_create("PCIe SGL pool", &ioc->pdev->dev, sz, + ioc->page_size, 0); + if (!ioc->pcie_sgl_dma_pool) { + ioc_err(ioc, "PCIe SGL pool: dma_pool_create failed\n"); + return -ENOMEM; + } + + ioc->chains_per_prp_buffer = sz/ioc->chain_segment_sz; + ioc->chains_per_prp_buffer = + min(ioc->chains_per_prp_buffer, ioc->chains_needed_per_io); + for (i = 0; i < ioc->scsiio_depth; i++) { + ioc->pcie_sg_lookup[i].pcie_sgl = + dma_pool_alloc(ioc->pcie_sgl_dma_pool, GFP_KERNEL, + &ioc->pcie_sg_lookup[i].pcie_sgl_dma); + if (!ioc->pcie_sg_lookup[i].pcie_sgl) { + ioc_err(ioc, "PCIe SGL pool: dma_pool_alloc failed\n"); + return -EAGAIN; + } + + if (!mpt3sas_check_same_4gb_region( + ioc->pcie_sg_lookup[i].pcie_sgl_dma, sz)) { + ioc_err(ioc, "PCIE SGLs are not in same 4G !! pcie sgl (0x%p) dma = (0x%llx)\n", + ioc->pcie_sg_lookup[i].pcie_sgl, + (unsigned long long) + ioc->pcie_sg_lookup[i].pcie_sgl_dma); + ioc->use_32bit_dma = true; + return -EAGAIN; + } + + for (j = 0; j < ioc->chains_per_prp_buffer; j++) { + ct = &ioc->chain_lookup[i].chains_per_smid[j]; + ct->chain_buffer = + ioc->pcie_sg_lookup[i].pcie_sgl + + (j * ioc->chain_segment_sz); + ct->chain_buffer_dma = + ioc->pcie_sg_lookup[i].pcie_sgl_dma + + (j * ioc->chain_segment_sz); + } + } + dinitprintk(ioc, ioc_info(ioc, + "PCIe sgl pool depth(%d), element_size(%d), pool_size(%d kB)\n", + ioc->scsiio_depth, sz, (sz * ioc->scsiio_depth)/1024)); + dinitprintk(ioc, ioc_info(ioc, + "Number of chains can fit in a PRP page(%d)\n", + ioc->chains_per_prp_buffer)); + return 0; +} + +/** + * _base_allocate_chain_dma_pool - Allocating DMA'able memory + * for chain dma pool. + * @ioc: Adapter object + * @sz: DMA Pool size + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_allocate_chain_dma_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) +{ + int i = 0, j = 0; + struct chain_tracker *ctr; + + ioc->chain_dma_pool = dma_pool_create("chain pool", &ioc->pdev->dev, + ioc->chain_segment_sz, 16, 0); + if (!ioc->chain_dma_pool) + return -ENOMEM; + + for (i = 0; i < ioc->scsiio_depth; i++) { + for (j = ioc->chains_per_prp_buffer; + j < ioc->chains_needed_per_io; j++) { + ctr = &ioc->chain_lookup[i].chains_per_smid[j]; + ctr->chain_buffer = dma_pool_alloc(ioc->chain_dma_pool, + GFP_KERNEL, &ctr->chain_buffer_dma); + if (!ctr->chain_buffer) + return -EAGAIN; + if (!mpt3sas_check_same_4gb_region( + ctr->chain_buffer_dma, ioc->chain_segment_sz)) { + ioc_err(ioc, + "Chain buffers are not in same 4G !!! Chain buff (0x%p) dma = (0x%llx)\n", + ctr->chain_buffer, + (unsigned long long)ctr->chain_buffer_dma); + ioc->use_32bit_dma = true; + return -EAGAIN; + } + } + } + dinitprintk(ioc, ioc_info(ioc, + "chain_lookup depth (%d), frame_size(%d), pool_size(%d kB)\n", + ioc->scsiio_depth, ioc->chain_segment_sz, ((ioc->scsiio_depth * + (ioc->chains_needed_per_io - ioc->chains_per_prp_buffer) * + ioc->chain_segment_sz))/1024)); + return 0; +} + +/** + * _base_allocate_sense_dma_pool - Allocating DMA'able memory + * for sense dma pool. + * @ioc: Adapter object + * @sz: DMA Pool size + * Return: 0 for success, non-zero for failure. + */ +static int +_base_allocate_sense_dma_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) +{ + ioc->sense_dma_pool = + dma_pool_create("sense pool", &ioc->pdev->dev, sz, 4, 0); + if (!ioc->sense_dma_pool) + return -ENOMEM; + ioc->sense = dma_pool_alloc(ioc->sense_dma_pool, + GFP_KERNEL, &ioc->sense_dma); + if (!ioc->sense) + return -EAGAIN; + if (!mpt3sas_check_same_4gb_region(ioc->sense_dma, sz)) { + dinitprintk(ioc, pr_err( + "Bad Sense Pool! sense (0x%p) sense_dma = (0x%llx)\n", + ioc->sense, (unsigned long long) ioc->sense_dma)); + ioc->use_32bit_dma = true; + return -EAGAIN; + } + ioc_info(ioc, + "sense pool(0x%p) - dma(0x%llx): depth(%d), element_size(%d), pool_size (%d kB)\n", + ioc->sense, (unsigned long long)ioc->sense_dma, + ioc->scsiio_depth, SCSI_SENSE_BUFFERSIZE, sz/1024); + return 0; +} + +/** + * _base_allocate_reply_pool - Allocating DMA'able memory + * for reply pool. + * @ioc: Adapter object + * @sz: DMA Pool size + * Return: 0 for success, non-zero for failure. + */ +static int +_base_allocate_reply_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) +{ + /* reply pool, 4 byte align */ + ioc->reply_dma_pool = dma_pool_create("reply pool", + &ioc->pdev->dev, sz, 4, 0); + if (!ioc->reply_dma_pool) + return -ENOMEM; + ioc->reply = dma_pool_alloc(ioc->reply_dma_pool, GFP_KERNEL, + &ioc->reply_dma); + if (!ioc->reply) + return -EAGAIN; + if (!mpt3sas_check_same_4gb_region(ioc->reply_dma, sz)) { + dinitprintk(ioc, pr_err( + "Bad Reply Pool! Reply (0x%p) Reply dma = (0x%llx)\n", + ioc->reply, (unsigned long long) ioc->reply_dma)); + ioc->use_32bit_dma = true; + return -EAGAIN; + } + ioc->reply_dma_min_address = (u32)(ioc->reply_dma); + ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz; + ioc_info(ioc, + "reply pool(0x%p) - dma(0x%llx): depth(%d), frame_size(%d), pool_size(%d kB)\n", + ioc->reply, (unsigned long long)ioc->reply_dma, + ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024); + return 0; +} + +/** + * _base_allocate_reply_free_dma_pool - Allocating DMA'able memory + * for reply free dma pool. + * @ioc: Adapter object + * @sz: DMA Pool size + * Return: 0 for success, non-zero for failure. + */ +static int +_base_allocate_reply_free_dma_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) +{ + /* reply free queue, 16 byte align */ + ioc->reply_free_dma_pool = dma_pool_create( + "reply_free pool", &ioc->pdev->dev, sz, 16, 0); + if (!ioc->reply_free_dma_pool) + return -ENOMEM; + ioc->reply_free = dma_pool_alloc(ioc->reply_free_dma_pool, + GFP_KERNEL, &ioc->reply_free_dma); + if (!ioc->reply_free) + return -EAGAIN; + if (!mpt3sas_check_same_4gb_region(ioc->reply_free_dma, sz)) { + dinitprintk(ioc, + pr_err("Bad Reply Free Pool! Reply Free (0x%p) Reply Free dma = (0x%llx)\n", + ioc->reply_free, (unsigned long long) ioc->reply_free_dma)); + ioc->use_32bit_dma = true; + return -EAGAIN; + } + memset(ioc->reply_free, 0, sz); + dinitprintk(ioc, ioc_info(ioc, + "reply_free pool(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n", + ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024)); + dinitprintk(ioc, ioc_info(ioc, + "reply_free_dma (0x%llx)\n", + (unsigned long long)ioc->reply_free_dma)); + return 0; +} + +/** + * _base_allocate_reply_post_free_array - Allocating DMA'able memory + * for reply post free array. + * @ioc: Adapter object + * @reply_post_free_array_sz: DMA Pool size + * Return: 0 for success, non-zero for failure. + */ + +static int +_base_allocate_reply_post_free_array(struct MPT3SAS_ADAPTER *ioc, + u32 reply_post_free_array_sz) +{ + ioc->reply_post_free_array_dma_pool = + dma_pool_create("reply_post_free_array pool", + &ioc->pdev->dev, reply_post_free_array_sz, 16, 0); + if (!ioc->reply_post_free_array_dma_pool) + return -ENOMEM; + ioc->reply_post_free_array = + dma_pool_alloc(ioc->reply_post_free_array_dma_pool, + GFP_KERNEL, &ioc->reply_post_free_array_dma); + if (!ioc->reply_post_free_array) + return -EAGAIN; + if (!mpt3sas_check_same_4gb_region(ioc->reply_post_free_array_dma, + reply_post_free_array_sz)) { + dinitprintk(ioc, pr_err( + "Bad Reply Free Pool! Reply Free (0x%p) Reply Free dma = (0x%llx)\n", + ioc->reply_free, + (unsigned long long) ioc->reply_free_dma)); + ioc->use_32bit_dma = true; + return -EAGAIN; + } + return 0; +} +/** + * base_alloc_rdpq_dma_pool - Allocating DMA'able memory + * for reply queues. + * @ioc: per adapter object + * @sz: DMA Pool size + * Return: 0 for success, non-zero for failure. + */ +static int +base_alloc_rdpq_dma_pool(struct MPT3SAS_ADAPTER *ioc, int sz) +{ + int i = 0; + u32 dma_alloc_count = 0; + int reply_post_free_sz = ioc->reply_post_queue_depth * + sizeof(Mpi2DefaultReplyDescriptor_t); + int count = ioc->rdpq_array_enable ? ioc->reply_queue_count : 1; + + ioc->reply_post = kcalloc(count, sizeof(struct reply_post_struct), + GFP_KERNEL); + if (!ioc->reply_post) + return -ENOMEM; + /* + * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and + * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should + * be within 4GB boundary i.e reply queues in a set must have same + * upper 32-bits in their memory address. so here driver is allocating + * the DMA'able memory for reply queues according. + * Driver uses limitation of + * VENTURA_SERIES to manage INVADER_SERIES as well. + */ + dma_alloc_count = DIV_ROUND_UP(count, + RDPQ_MAX_INDEX_IN_ONE_CHUNK); + ioc->reply_post_free_dma_pool = + dma_pool_create("reply_post_free pool", + &ioc->pdev->dev, sz, 16, 0); + if (!ioc->reply_post_free_dma_pool) + return -ENOMEM; + for (i = 0; i < count; i++) { + if ((i % RDPQ_MAX_INDEX_IN_ONE_CHUNK == 0) && dma_alloc_count) { + ioc->reply_post[i].reply_post_free = + dma_pool_zalloc(ioc->reply_post_free_dma_pool, + GFP_KERNEL, + &ioc->reply_post[i].reply_post_free_dma); + if (!ioc->reply_post[i].reply_post_free) + return -ENOMEM; + /* + * Each set of RDPQ pool must satisfy 4gb boundary + * restriction. + * 1) Check if allocated resources for RDPQ pool are in + * the same 4GB range. + * 2) If #1 is true, continue with 64 bit DMA. + * 3) If #1 is false, return 1. which means free all the + * resources and set DMA mask to 32 and allocate. + */ + if (!mpt3sas_check_same_4gb_region( + ioc->reply_post[i].reply_post_free_dma, sz)) { + dinitprintk(ioc, + ioc_err(ioc, "bad Replypost free pool(0x%p)" + "reply_post_free_dma = (0x%llx)\n", + ioc->reply_post[i].reply_post_free, + (unsigned long long) + ioc->reply_post[i].reply_post_free_dma)); + return -EAGAIN; + } + dma_alloc_count--; + + } else { + ioc->reply_post[i].reply_post_free = + (Mpi2ReplyDescriptorsUnion_t *) + ((long)ioc->reply_post[i-1].reply_post_free + + reply_post_free_sz); + ioc->reply_post[i].reply_post_free_dma = + (dma_addr_t) + (ioc->reply_post[i-1].reply_post_free_dma + + reply_post_free_sz); + } + } + return 0; +} + +/** + * _base_allocate_memory_pools - allocate start of day memory pools + * @ioc: per adapter object + * + * Return: 0 success, anything else error. + */ +static int +_base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc) +{ + struct mpt3sas_facts *facts; + u16 max_sge_elements; + u16 chains_needed_per_io; + u32 sz, total_sz, reply_post_free_sz, reply_post_free_array_sz; + u32 retry_sz; + u32 rdpq_sz = 0, sense_sz = 0; + u16 max_request_credit, nvme_blocks_needed; + unsigned short sg_tablesize; + u16 sge_size; + int i; + int ret = 0, rc = 0; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + + retry_sz = 0; + facts = &ioc->facts; + + /* command line tunables for max sgl entries */ + if (max_sgl_entries != -1) + sg_tablesize = max_sgl_entries; + else { + if (ioc->hba_mpi_version_belonged == MPI2_VERSION) + sg_tablesize = MPT2SAS_SG_DEPTH; + else + sg_tablesize = MPT3SAS_SG_DEPTH; + } + + /* max sgl entries <= MPT_KDUMP_MIN_PHYS_SEGMENTS in KDUMP mode */ + if (reset_devices) + sg_tablesize = min_t(unsigned short, sg_tablesize, + MPT_KDUMP_MIN_PHYS_SEGMENTS); + + if (ioc->is_mcpu_endpoint) + ioc->shost->sg_tablesize = MPT_MIN_PHYS_SEGMENTS; + else { + if (sg_tablesize < MPT_MIN_PHYS_SEGMENTS) + sg_tablesize = MPT_MIN_PHYS_SEGMENTS; + else if (sg_tablesize > MPT_MAX_PHYS_SEGMENTS) { + sg_tablesize = min_t(unsigned short, sg_tablesize, + SG_MAX_SEGMENTS); + ioc_warn(ioc, "sg_tablesize(%u) is bigger than kernel defined SG_CHUNK_SIZE(%u)\n", + sg_tablesize, MPT_MAX_PHYS_SEGMENTS); + } + ioc->shost->sg_tablesize = sg_tablesize; + } + + ioc->internal_depth = min_t(int, (facts->HighPriorityCredit + (5)), + (facts->RequestCredit / 4)); + if (ioc->internal_depth < INTERNAL_CMDS_COUNT) { + if (facts->RequestCredit <= (INTERNAL_CMDS_COUNT + + INTERNAL_SCSIIO_CMDS_COUNT)) { + ioc_err(ioc, "IOC doesn't have enough Request Credits, it has just %d number of credits\n", + facts->RequestCredit); + return -ENOMEM; + } + ioc->internal_depth = 10; + } + + ioc->hi_priority_depth = ioc->internal_depth - (5); + /* command line tunables for max controller queue depth */ + if (max_queue_depth != -1 && max_queue_depth != 0) { + max_request_credit = min_t(u16, max_queue_depth + + ioc->internal_depth, facts->RequestCredit); + if (max_request_credit > MAX_HBA_QUEUE_DEPTH) + max_request_credit = MAX_HBA_QUEUE_DEPTH; + } else if (reset_devices) + max_request_credit = min_t(u16, facts->RequestCredit, + (MPT3SAS_KDUMP_SCSI_IO_DEPTH + ioc->internal_depth)); + else + max_request_credit = min_t(u16, facts->RequestCredit, + MAX_HBA_QUEUE_DEPTH); + + /* Firmware maintains additional facts->HighPriorityCredit number of + * credits for HiPriprity Request messages, so hba queue depth will be + * sum of max_request_credit and high priority queue depth. + */ + ioc->hba_queue_depth = max_request_credit + ioc->hi_priority_depth; + + /* request frame size */ + ioc->request_sz = facts->IOCRequestFrameSize * 4; + + /* reply frame size */ + ioc->reply_sz = facts->ReplyFrameSize * 4; + + /* chain segment size */ + if (ioc->hba_mpi_version_belonged != MPI2_VERSION) { + if (facts->IOCMaxChainSegmentSize) + ioc->chain_segment_sz = + facts->IOCMaxChainSegmentSize * + MAX_CHAIN_ELEMT_SZ; + else + /* set to 128 bytes size if IOCMaxChainSegmentSize is zero */ + ioc->chain_segment_sz = DEFAULT_NUM_FWCHAIN_ELEMTS * + MAX_CHAIN_ELEMT_SZ; + } else + ioc->chain_segment_sz = ioc->request_sz; + + /* calculate the max scatter element size */ + sge_size = max_t(u16, ioc->sge_size, ioc->sge_size_ieee); + + retry_allocation: + total_sz = 0; + /* calculate number of sg elements left over in the 1st frame */ + max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) - + sizeof(Mpi2SGEIOUnion_t)) + sge_size); + ioc->max_sges_in_main_message = max_sge_elements/sge_size; + + /* now do the same for a chain buffer */ + max_sge_elements = ioc->chain_segment_sz - sge_size; + ioc->max_sges_in_chain_message = max_sge_elements/sge_size; + + /* + * MPT3SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE + */ + chains_needed_per_io = ((ioc->shost->sg_tablesize - + ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message) + + 1; + if (chains_needed_per_io > facts->MaxChainDepth) { + chains_needed_per_io = facts->MaxChainDepth; + ioc->shost->sg_tablesize = min_t(u16, + ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message + * chains_needed_per_io), ioc->shost->sg_tablesize); + } + ioc->chains_needed_per_io = chains_needed_per_io; + + /* reply free queue sizing - taking into account for 64 FW events */ + ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64; + + /* mCPU manage single counters for simplicity */ + if (ioc->is_mcpu_endpoint) + ioc->reply_post_queue_depth = ioc->reply_free_queue_depth; + else { + /* calculate reply descriptor post queue depth */ + ioc->reply_post_queue_depth = ioc->hba_queue_depth + + ioc->reply_free_queue_depth + 1; + /* align the reply post queue on the next 16 count boundary */ + if (ioc->reply_post_queue_depth % 16) + ioc->reply_post_queue_depth += 16 - + (ioc->reply_post_queue_depth % 16); + } + + if (ioc->reply_post_queue_depth > + facts->MaxReplyDescriptorPostQueueDepth) { + ioc->reply_post_queue_depth = + facts->MaxReplyDescriptorPostQueueDepth - + (facts->MaxReplyDescriptorPostQueueDepth % 16); + ioc->hba_queue_depth = + ((ioc->reply_post_queue_depth - 64) / 2) - 1; + ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64; + } + + ioc_info(ioc, + "scatter gather: sge_in_main_msg(%d), sge_per_chain(%d), " + "sge_per_io(%d), chains_per_io(%d)\n", + ioc->max_sges_in_main_message, + ioc->max_sges_in_chain_message, + ioc->shost->sg_tablesize, + ioc->chains_needed_per_io); + + /* reply post queue, 16 byte align */ + reply_post_free_sz = ioc->reply_post_queue_depth * + sizeof(Mpi2DefaultReplyDescriptor_t); + rdpq_sz = reply_post_free_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK; + if ((_base_is_controller_msix_enabled(ioc) && !ioc->rdpq_array_enable) + || (ioc->reply_queue_count < RDPQ_MAX_INDEX_IN_ONE_CHUNK)) + rdpq_sz = reply_post_free_sz * ioc->reply_queue_count; + ret = base_alloc_rdpq_dma_pool(ioc, rdpq_sz); + if (ret == -EAGAIN) { + /* + * Free allocated bad RDPQ memory pools. + * Change dma coherent mask to 32 bit and reallocate RDPQ + */ + _base_release_memory_pools(ioc); + ioc->use_32bit_dma = true; + if (_base_config_dma_addressing(ioc, ioc->pdev) != 0) { + ioc_err(ioc, + "32 DMA mask failed %s\n", pci_name(ioc->pdev)); + return -ENODEV; + } + if (base_alloc_rdpq_dma_pool(ioc, rdpq_sz)) + return -ENOMEM; + } else if (ret == -ENOMEM) + return -ENOMEM; + total_sz = rdpq_sz * (!ioc->rdpq_array_enable ? 1 : + DIV_ROUND_UP(ioc->reply_queue_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK)); + ioc->scsiio_depth = ioc->hba_queue_depth - + ioc->hi_priority_depth - ioc->internal_depth; + + /* set the scsi host can_queue depth + * with some internal commands that could be outstanding + */ + ioc->shost->can_queue = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT; + dinitprintk(ioc, + ioc_info(ioc, "scsi host: can_queue depth (%d)\n", + ioc->shost->can_queue)); + + /* contiguous pool for request and chains, 16 byte align, one extra " + * "frame for smid=0 + */ + ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth; + sz = ((ioc->scsiio_depth + 1) * ioc->request_sz); + + /* hi-priority queue */ + sz += (ioc->hi_priority_depth * ioc->request_sz); + + /* internal queue */ + sz += (ioc->internal_depth * ioc->request_sz); + + ioc->request_dma_sz = sz; + ioc->request = dma_alloc_coherent(&ioc->pdev->dev, sz, + &ioc->request_dma, GFP_KERNEL); + if (!ioc->request) { + ioc_err(ioc, "request pool: dma_alloc_coherent failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), total(%d kB)\n", + ioc->hba_queue_depth, ioc->chains_needed_per_io, + ioc->request_sz, sz / 1024); + if (ioc->scsiio_depth < MPT3SAS_SAS_QUEUE_DEPTH) + goto out; + retry_sz = 64; + ioc->hba_queue_depth -= retry_sz; + _base_release_memory_pools(ioc); + goto retry_allocation; + } + + if (retry_sz) + ioc_err(ioc, "request pool: dma_alloc_coherent succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), total(%d kb)\n", + ioc->hba_queue_depth, ioc->chains_needed_per_io, + ioc->request_sz, sz / 1024); + + /* hi-priority queue */ + ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) * + ioc->request_sz); + ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) * + ioc->request_sz); + + /* internal queue */ + ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth * + ioc->request_sz); + ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth * + ioc->request_sz); + + ioc_info(ioc, + "request pool(0x%p) - dma(0x%llx): " + "depth(%d), frame_size(%d), pool_size(%d kB)\n", + ioc->request, (unsigned long long) ioc->request_dma, + ioc->hba_queue_depth, ioc->request_sz, + (ioc->hba_queue_depth * ioc->request_sz) / 1024); + + total_sz += sz; + + dinitprintk(ioc, + ioc_info(ioc, "scsiio(0x%p): depth(%d)\n", + ioc->request, ioc->scsiio_depth)); + + ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH); + sz = ioc->scsiio_depth * sizeof(struct chain_lookup); + ioc->chain_lookup = kzalloc(sz, GFP_KERNEL); + if (!ioc->chain_lookup) { + ioc_err(ioc, "chain_lookup: __get_free_pages failed\n"); + goto out; + } + + sz = ioc->chains_needed_per_io * sizeof(struct chain_tracker); + for (i = 0; i < ioc->scsiio_depth; i++) { + ioc->chain_lookup[i].chains_per_smid = kzalloc(sz, GFP_KERNEL); + if (!ioc->chain_lookup[i].chains_per_smid) { + ioc_err(ioc, "chain_lookup: kzalloc failed\n"); + goto out; + } + } + + /* initialize hi-priority queue smid's */ + ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth, + sizeof(struct request_tracker), GFP_KERNEL); + if (!ioc->hpr_lookup) { + ioc_err(ioc, "hpr_lookup: kcalloc failed\n"); + goto out; + } + ioc->hi_priority_smid = ioc->scsiio_depth + 1; + dinitprintk(ioc, + ioc_info(ioc, "hi_priority(0x%p): depth(%d), start smid(%d)\n", + ioc->hi_priority, + ioc->hi_priority_depth, ioc->hi_priority_smid)); + + /* initialize internal queue smid's */ + ioc->internal_lookup = kcalloc(ioc->internal_depth, + sizeof(struct request_tracker), GFP_KERNEL); + if (!ioc->internal_lookup) { + ioc_err(ioc, "internal_lookup: kcalloc failed\n"); + goto out; + } + ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth; + dinitprintk(ioc, + ioc_info(ioc, "internal(0x%p): depth(%d), start smid(%d)\n", + ioc->internal, + ioc->internal_depth, ioc->internal_smid)); + + ioc->io_queue_num = kcalloc(ioc->scsiio_depth, + sizeof(u16), GFP_KERNEL); + if (!ioc->io_queue_num) + goto out; + /* + * The number of NVMe page sized blocks needed is: + * (((sg_tablesize * 8) - 1) / (page_size - 8)) + 1 + * ((sg_tablesize * 8) - 1) is the max PRP's minus the first PRP entry + * that is placed in the main message frame. 8 is the size of each PRP + * entry or PRP list pointer entry. 8 is subtracted from page_size + * because of the PRP list pointer entry at the end of a page, so this + * is not counted as a PRP entry. The 1 added page is a round up. + * + * To avoid allocation failures due to the amount of memory that could + * be required for NVMe PRP's, only each set of NVMe blocks will be + * contiguous, so a new set is allocated for each possible I/O. + */ + + ioc->chains_per_prp_buffer = 0; + if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_NVME_DEVICES) { + nvme_blocks_needed = + (ioc->shost->sg_tablesize * NVME_PRP_SIZE) - 1; + nvme_blocks_needed /= (ioc->page_size - NVME_PRP_SIZE); + nvme_blocks_needed++; + + sz = sizeof(struct pcie_sg_list) * ioc->scsiio_depth; + ioc->pcie_sg_lookup = kzalloc(sz, GFP_KERNEL); + if (!ioc->pcie_sg_lookup) { + ioc_info(ioc, "PCIe SGL lookup: kzalloc failed\n"); + goto out; + } + sz = nvme_blocks_needed * ioc->page_size; + rc = _base_allocate_pcie_sgl_pool(ioc, sz); + if (rc == -ENOMEM) + return -ENOMEM; + else if (rc == -EAGAIN) + goto try_32bit_dma; + total_sz += sz * ioc->scsiio_depth; + } + + rc = _base_allocate_chain_dma_pool(ioc, ioc->chain_segment_sz); + if (rc == -ENOMEM) + return -ENOMEM; + else if (rc == -EAGAIN) + goto try_32bit_dma; + total_sz += ioc->chain_segment_sz * ((ioc->chains_needed_per_io - + ioc->chains_per_prp_buffer) * ioc->scsiio_depth); + dinitprintk(ioc, + ioc_info(ioc, "chain pool depth(%d), frame_size(%d), pool_size(%d kB)\n", + ioc->chain_depth, ioc->chain_segment_sz, + (ioc->chain_depth * ioc->chain_segment_sz) / 1024)); + /* sense buffers, 4 byte align */ + sense_sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE; + rc = _base_allocate_sense_dma_pool(ioc, sense_sz); + if (rc == -ENOMEM) + return -ENOMEM; + else if (rc == -EAGAIN) + goto try_32bit_dma; + total_sz += sense_sz; + /* reply pool, 4 byte align */ + sz = ioc->reply_free_queue_depth * ioc->reply_sz; + rc = _base_allocate_reply_pool(ioc, sz); + if (rc == -ENOMEM) + return -ENOMEM; + else if (rc == -EAGAIN) + goto try_32bit_dma; + total_sz += sz; + + /* reply free queue, 16 byte align */ + sz = ioc->reply_free_queue_depth * 4; + rc = _base_allocate_reply_free_dma_pool(ioc, sz); + if (rc == -ENOMEM) + return -ENOMEM; + else if (rc == -EAGAIN) + goto try_32bit_dma; + dinitprintk(ioc, + ioc_info(ioc, "reply_free_dma (0x%llx)\n", + (unsigned long long)ioc->reply_free_dma)); + total_sz += sz; + if (ioc->rdpq_array_enable) { + reply_post_free_array_sz = ioc->reply_queue_count * + sizeof(Mpi2IOCInitRDPQArrayEntry); + rc = _base_allocate_reply_post_free_array(ioc, + reply_post_free_array_sz); + if (rc == -ENOMEM) + return -ENOMEM; + else if (rc == -EAGAIN) + goto try_32bit_dma; + } + ioc->config_page_sz = 512; + ioc->config_page = dma_alloc_coherent(&ioc->pdev->dev, + ioc->config_page_sz, &ioc->config_page_dma, GFP_KERNEL); + if (!ioc->config_page) { + ioc_err(ioc, "config page: dma_pool_alloc failed\n"); + goto out; + } + + ioc_info(ioc, "config page(0x%p) - dma(0x%llx): size(%d)\n", + ioc->config_page, (unsigned long long)ioc->config_page_dma, + ioc->config_page_sz); + total_sz += ioc->config_page_sz; + + ioc_info(ioc, "Allocated physical memory: size(%d kB)\n", + total_sz / 1024); + ioc_info(ioc, "Current Controller Queue Depth(%d),Max Controller Queue Depth(%d)\n", + ioc->shost->can_queue, facts->RequestCredit); + ioc_info(ioc, "Scatter Gather Elements per IO(%d)\n", + ioc->shost->sg_tablesize); + return 0; + +try_32bit_dma: + _base_release_memory_pools(ioc); + if (ioc->use_32bit_dma && (ioc->dma_mask > 32)) { + /* Change dma coherent mask to 32 bit and reallocate */ + if (_base_config_dma_addressing(ioc, ioc->pdev) != 0) { + pr_err("Setting 32 bit coherent DMA mask Failed %s\n", + pci_name(ioc->pdev)); + return -ENODEV; + } + } else if (_base_reduce_hba_queue_depth(ioc) != 0) + return -ENOMEM; + goto retry_allocation; + + out: + return -ENOMEM; +} + +/** + * mpt3sas_base_get_iocstate - Get the current state of a MPT adapter. + * @ioc: Pointer to MPT_ADAPTER structure + * @cooked: Request raw or cooked IOC state + * + * Return: all IOC Doorbell register bits if cooked==0, else just the + * Doorbell bits in MPI_IOC_STATE_MASK. + */ +u32 +mpt3sas_base_get_iocstate(struct MPT3SAS_ADAPTER *ioc, int cooked) +{ + u32 s, sc; + + s = ioc->base_readl_ext_retry(&ioc->chip->Doorbell); + sc = s & MPI2_IOC_STATE_MASK; + return cooked ? sc : s; +} + +/** + * _base_wait_on_iocstate - waiting on a particular ioc state + * @ioc: ? + * @ioc_state: controller state { READY, OPERATIONAL, or RESET } + * @timeout: timeout in second + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_wait_on_iocstate(struct MPT3SAS_ADAPTER *ioc, u32 ioc_state, int timeout) +{ + u32 count, cntdn; + u32 current_state; + + count = 0; + cntdn = 1000 * timeout; + do { + current_state = mpt3sas_base_get_iocstate(ioc, 1); + if (current_state == ioc_state) + return 0; + if (count && current_state == MPI2_IOC_STATE_FAULT) + break; + if (count && current_state == MPI2_IOC_STATE_COREDUMP) + break; + + usleep_range(1000, 1500); + count++; + } while (--cntdn); + + return current_state; +} + +/** + * _base_dump_reg_set - This function will print hexdump of register set. + * @ioc: per adapter object + * + * Return: nothing. + */ +static inline void +_base_dump_reg_set(struct MPT3SAS_ADAPTER *ioc) +{ + unsigned int i, sz = 256; + u32 __iomem *reg = (u32 __iomem *)ioc->chip; + + ioc_info(ioc, "System Register set:\n"); + for (i = 0; i < (sz / sizeof(u32)); i++) + pr_info("%08x: %08x\n", (i * 4), readl(®[i])); +} + +/** + * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by + * a write to the doorbell) + * @ioc: per adapter object + * @timeout: timeout in seconds + * + * Return: 0 for success, non-zero for failure. + * + * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell. + */ + +static int +_base_wait_for_doorbell_int(struct MPT3SAS_ADAPTER *ioc, int timeout) +{ + u32 cntdn, count; + u32 int_status; + + count = 0; + cntdn = 1000 * timeout; + do { + int_status = ioc->base_readl(&ioc->chip->HostInterruptStatus); + if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) { + dhsprintk(ioc, + ioc_info(ioc, "%s: successful count(%d), timeout(%d)\n", + __func__, count, timeout)); + return 0; + } + + usleep_range(1000, 1500); + count++; + } while (--cntdn); + + ioc_err(ioc, "%s: failed due to timeout count(%d), int_status(%x)!\n", + __func__, count, int_status); + return -EFAULT; +} + +static int +_base_spin_on_doorbell_int(struct MPT3SAS_ADAPTER *ioc, int timeout) +{ + u32 cntdn, count; + u32 int_status; + + count = 0; + cntdn = 2000 * timeout; + do { + int_status = ioc->base_readl(&ioc->chip->HostInterruptStatus); + if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) { + dhsprintk(ioc, + ioc_info(ioc, "%s: successful count(%d), timeout(%d)\n", + __func__, count, timeout)); + return 0; + } + + udelay(500); + count++; + } while (--cntdn); + + ioc_err(ioc, "%s: failed due to timeout count(%d), int_status(%x)!\n", + __func__, count, int_status); + return -EFAULT; + +} + +/** + * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell. + * @ioc: per adapter object + * @timeout: timeout in second + * + * Return: 0 for success, non-zero for failure. + * + * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to + * doorbell. + */ +static int +_base_wait_for_doorbell_ack(struct MPT3SAS_ADAPTER *ioc, int timeout) +{ + u32 cntdn, count; + u32 int_status; + u32 doorbell; + + count = 0; + cntdn = 1000 * timeout; + do { + int_status = ioc->base_readl(&ioc->chip->HostInterruptStatus); + if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) { + dhsprintk(ioc, + ioc_info(ioc, "%s: successful count(%d), timeout(%d)\n", + __func__, count, timeout)); + return 0; + } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) { + doorbell = ioc->base_readl_ext_retry(&ioc->chip->Doorbell); + if ((doorbell & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_FAULT) { + mpt3sas_print_fault_code(ioc, doorbell); + return -EFAULT; + } + if ((doorbell & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_COREDUMP) { + mpt3sas_print_coredump_info(ioc, doorbell); + return -EFAULT; + } + } else if (int_status == 0xFFFFFFFF) + goto out; + + usleep_range(1000, 1500); + count++; + } while (--cntdn); + + out: + ioc_err(ioc, "%s: failed due to timeout count(%d), int_status(%x)!\n", + __func__, count, int_status); + return -EFAULT; +} + +/** + * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use + * @ioc: per adapter object + * @timeout: timeout in second + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_wait_for_doorbell_not_used(struct MPT3SAS_ADAPTER *ioc, int timeout) +{ + u32 cntdn, count; + u32 doorbell_reg; + + count = 0; + cntdn = 1000 * timeout; + do { + doorbell_reg = ioc->base_readl_ext_retry(&ioc->chip->Doorbell); + if (!(doorbell_reg & MPI2_DOORBELL_USED)) { + dhsprintk(ioc, + ioc_info(ioc, "%s: successful count(%d), timeout(%d)\n", + __func__, count, timeout)); + return 0; + } + + usleep_range(1000, 1500); + count++; + } while (--cntdn); + + ioc_err(ioc, "%s: failed due to timeout count(%d), doorbell_reg(%x)!\n", + __func__, count, doorbell_reg); + return -EFAULT; +} + +/** + * _base_send_ioc_reset - send doorbell reset + * @ioc: per adapter object + * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET + * @timeout: timeout in second + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_send_ioc_reset(struct MPT3SAS_ADAPTER *ioc, u8 reset_type, int timeout) +{ + u32 ioc_state; + int r = 0; + unsigned long flags; + + if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) { + ioc_err(ioc, "%s: unknown reset_type\n", __func__); + return -EFAULT; + } + + if (!(ioc->facts.IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY)) + return -EFAULT; + + ioc_info(ioc, "sending message unit reset !!\n"); + + writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT, + &ioc->chip->Doorbell); + if ((_base_wait_for_doorbell_ack(ioc, 15))) { + r = -EFAULT; + goto out; + } + + ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, timeout); + if (ioc_state) { + ioc_err(ioc, "%s: failed going to ready state (ioc_state=0x%x)\n", + __func__, ioc_state); + r = -EFAULT; + goto out; + } + out: + if (r != 0) { + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + /* + * Wait for IOC state CoreDump to clear only during + * HBA initialization & release time. + */ + if ((ioc_state & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_COREDUMP && (ioc->is_driver_loading == 1 || + ioc->fault_reset_work_q == NULL)) { + spin_unlock_irqrestore( + &ioc->ioc_reset_in_progress_lock, flags); + mpt3sas_print_coredump_info(ioc, ioc_state); + mpt3sas_base_wait_for_coredump_completion(ioc, + __func__); + spin_lock_irqsave( + &ioc->ioc_reset_in_progress_lock, flags); + } + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + } + ioc_info(ioc, "message unit reset: %s\n", + r == 0 ? "SUCCESS" : "FAILED"); + return r; +} + +/** + * mpt3sas_wait_for_ioc - IOC's operational state is checked here. + * @ioc: per adapter object + * @timeout: timeout in seconds + * + * Return: Waits up to timeout seconds for the IOC to + * become operational. Returns 0 if IOC is present + * and operational; otherwise returns %-EFAULT. + */ + +int +mpt3sas_wait_for_ioc(struct MPT3SAS_ADAPTER *ioc, int timeout) +{ + int wait_state_count = 0; + u32 ioc_state; + + do { + ioc_state = mpt3sas_base_get_iocstate(ioc, 1); + if (ioc_state == MPI2_IOC_STATE_OPERATIONAL) + break; + + /* + * Watchdog thread will be started after IOC Initialization, so + * no need to wait here for IOC state to become operational + * when IOC Initialization is on. Instead the driver will + * return ETIME status, so that calling function can issue + * diag reset operation and retry the command. + */ + if (ioc->is_driver_loading) + return -ETIME; + + ssleep(1); + ioc_info(ioc, "%s: waiting for operational state(count=%d)\n", + __func__, ++wait_state_count); + } while (--timeout); + if (!timeout) { + ioc_err(ioc, "%s: failed due to ioc not operational\n", __func__); + return -EFAULT; + } + if (wait_state_count) + ioc_info(ioc, "ioc is operational\n"); + return 0; +} + +/** + * _base_handshake_req_reply_wait - send request thru doorbell interface + * @ioc: per adapter object + * @request_bytes: request length + * @request: pointer having request payload + * @reply_bytes: reply length + * @reply: pointer to reply payload + * @timeout: timeout in second + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes, + u32 *request, int reply_bytes, u16 *reply, int timeout) +{ + MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply; + int i; + u8 failed; + __le32 *mfp; + + /* make sure doorbell is not in use */ + if ((ioc->base_readl_ext_retry(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) { + ioc_err(ioc, "doorbell is in use (line=%d)\n", __LINE__); + return -EFAULT; + } + + /* clear pending doorbell interrupts from previous state changes */ + if (ioc->base_readl(&ioc->chip->HostInterruptStatus) & + MPI2_HIS_IOC2SYS_DB_STATUS) + writel(0, &ioc->chip->HostInterruptStatus); + + /* send message to ioc */ + writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) | + ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)), + &ioc->chip->Doorbell); + + if ((_base_spin_on_doorbell_int(ioc, 5))) { + ioc_err(ioc, "doorbell handshake int failed (line=%d)\n", + __LINE__); + return -EFAULT; + } + writel(0, &ioc->chip->HostInterruptStatus); + + if ((_base_wait_for_doorbell_ack(ioc, 5))) { + ioc_err(ioc, "doorbell handshake ack failed (line=%d)\n", + __LINE__); + return -EFAULT; + } + + /* send message 32-bits at a time */ + for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) { + writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell); + if ((_base_wait_for_doorbell_ack(ioc, 5))) + failed = 1; + } + + if (failed) { + ioc_err(ioc, "doorbell handshake sending request failed (line=%d)\n", + __LINE__); + return -EFAULT; + } + + /* now wait for the reply */ + if ((_base_wait_for_doorbell_int(ioc, timeout))) { + ioc_err(ioc, "doorbell handshake int failed (line=%d)\n", + __LINE__); + return -EFAULT; + } + + /* read the first two 16-bits, it gives the total length of the reply */ + reply[0] = le16_to_cpu(ioc->base_readl_ext_retry(&ioc->chip->Doorbell) + & MPI2_DOORBELL_DATA_MASK); + writel(0, &ioc->chip->HostInterruptStatus); + if ((_base_wait_for_doorbell_int(ioc, 5))) { + ioc_err(ioc, "doorbell handshake int failed (line=%d)\n", + __LINE__); + return -EFAULT; + } + reply[1] = le16_to_cpu(ioc->base_readl_ext_retry(&ioc->chip->Doorbell) + & MPI2_DOORBELL_DATA_MASK); + writel(0, &ioc->chip->HostInterruptStatus); + + for (i = 2; i < default_reply->MsgLength * 2; i++) { + if ((_base_wait_for_doorbell_int(ioc, 5))) { + ioc_err(ioc, "doorbell handshake int failed (line=%d)\n", + __LINE__); + return -EFAULT; + } + if (i >= reply_bytes/2) /* overflow case */ + ioc->base_readl_ext_retry(&ioc->chip->Doorbell); + else + reply[i] = le16_to_cpu( + ioc->base_readl_ext_retry(&ioc->chip->Doorbell) + & MPI2_DOORBELL_DATA_MASK); + writel(0, &ioc->chip->HostInterruptStatus); + } + + _base_wait_for_doorbell_int(ioc, 5); + if (_base_wait_for_doorbell_not_used(ioc, 5) != 0) { + dhsprintk(ioc, + ioc_info(ioc, "doorbell is in use (line=%d)\n", + __LINE__)); + } + writel(0, &ioc->chip->HostInterruptStatus); + + if (ioc->logging_level & MPT_DEBUG_INIT) { + mfp = (__le32 *)reply; + pr_info("\toffset:data\n"); + for (i = 0; i < reply_bytes/4; i++) + ioc_info(ioc, "\t[0x%02x]:%08x\n", i*4, + le32_to_cpu(mfp[i])); + } + return 0; +} + +/** + * mpt3sas_base_sas_iounit_control - send sas iounit control to FW + * @ioc: per adapter object + * @mpi_reply: the reply payload from FW + * @mpi_request: the request payload sent to FW + * + * The SAS IO Unit Control Request message allows the host to perform low-level + * operations, such as resets on the PHYs of the IO Unit, also allows the host + * to obtain the IOC assigned device handles for a device if it has other + * identifying information about the device, in addition allows the host to + * remove IOC resources associated with the device. + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_sas_iounit_control(struct MPT3SAS_ADAPTER *ioc, + Mpi2SasIoUnitControlReply_t *mpi_reply, + Mpi2SasIoUnitControlRequest_t *mpi_request) +{ + u16 smid; + u8 issue_reset = 0; + int rc; + void *request; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + mutex_lock(&ioc->base_cmds.mutex); + + if (ioc->base_cmds.status != MPT3_CMD_NOT_USED) { + ioc_err(ioc, "%s: base_cmd in use\n", __func__); + rc = -EAGAIN; + goto out; + } + + rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT); + if (rc) + goto out; + + smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx); + if (!smid) { + ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); + rc = -EAGAIN; + goto out; + } + + rc = 0; + ioc->base_cmds.status = MPT3_CMD_PENDING; + request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->base_cmds.smid = smid; + memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t)); + if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET || + mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) + ioc->ioc_link_reset_in_progress = 1; + init_completion(&ioc->base_cmds.done); + ioc->put_smid_default(ioc, smid); + wait_for_completion_timeout(&ioc->base_cmds.done, + msecs_to_jiffies(10000)); + if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET || + mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) && + ioc->ioc_link_reset_in_progress) + ioc->ioc_link_reset_in_progress = 0; + if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) { + mpt3sas_check_cmd_timeout(ioc, ioc->base_cmds.status, + mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t)/4, + issue_reset); + goto issue_host_reset; + } + if (ioc->base_cmds.status & MPT3_CMD_REPLY_VALID) + memcpy(mpi_reply, ioc->base_cmds.reply, + sizeof(Mpi2SasIoUnitControlReply_t)); + else + memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t)); + ioc->base_cmds.status = MPT3_CMD_NOT_USED; + goto out; + + issue_host_reset: + if (issue_reset) + mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); + ioc->base_cmds.status = MPT3_CMD_NOT_USED; + rc = -EFAULT; + out: + mutex_unlock(&ioc->base_cmds.mutex); + return rc; +} + +/** + * mpt3sas_base_scsi_enclosure_processor - sending request to sep device + * @ioc: per adapter object + * @mpi_reply: the reply payload from FW + * @mpi_request: the request payload sent to FW + * + * The SCSI Enclosure Processor request message causes the IOC to + * communicate with SES devices to control LED status signals. + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_scsi_enclosure_processor(struct MPT3SAS_ADAPTER *ioc, + Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request) +{ + u16 smid; + u8 issue_reset = 0; + int rc; + void *request; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + mutex_lock(&ioc->base_cmds.mutex); + + if (ioc->base_cmds.status != MPT3_CMD_NOT_USED) { + ioc_err(ioc, "%s: base_cmd in use\n", __func__); + rc = -EAGAIN; + goto out; + } + + rc = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT); + if (rc) + goto out; + + smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx); + if (!smid) { + ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); + rc = -EAGAIN; + goto out; + } + + rc = 0; + ioc->base_cmds.status = MPT3_CMD_PENDING; + request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->base_cmds.smid = smid; + memset(request, 0, ioc->request_sz); + memcpy(request, mpi_request, sizeof(Mpi2SepReply_t)); + init_completion(&ioc->base_cmds.done); + ioc->put_smid_default(ioc, smid); + wait_for_completion_timeout(&ioc->base_cmds.done, + msecs_to_jiffies(10000)); + if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) { + mpt3sas_check_cmd_timeout(ioc, + ioc->base_cmds.status, mpi_request, + sizeof(Mpi2SepRequest_t)/4, issue_reset); + goto issue_host_reset; + } + if (ioc->base_cmds.status & MPT3_CMD_REPLY_VALID) + memcpy(mpi_reply, ioc->base_cmds.reply, + sizeof(Mpi2SepReply_t)); + else + memset(mpi_reply, 0, sizeof(Mpi2SepReply_t)); + ioc->base_cmds.status = MPT3_CMD_NOT_USED; + goto out; + + issue_host_reset: + if (issue_reset) + mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); + ioc->base_cmds.status = MPT3_CMD_NOT_USED; + rc = -EFAULT; + out: + mutex_unlock(&ioc->base_cmds.mutex); + return rc; +} + +/** + * _base_get_port_facts - obtain port facts reply and save in ioc + * @ioc: per adapter object + * @port: ? + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_get_port_facts(struct MPT3SAS_ADAPTER *ioc, int port) +{ + Mpi2PortFactsRequest_t mpi_request; + Mpi2PortFactsReply_t mpi_reply; + struct mpt3sas_port_facts *pfacts; + int mpi_reply_sz, mpi_request_sz, r; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + mpi_reply_sz = sizeof(Mpi2PortFactsReply_t); + mpi_request_sz = sizeof(Mpi2PortFactsRequest_t); + memset(&mpi_request, 0, mpi_request_sz); + mpi_request.Function = MPI2_FUNCTION_PORT_FACTS; + mpi_request.PortNumber = port; + r = _base_handshake_req_reply_wait(ioc, mpi_request_sz, + (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5); + + if (r != 0) { + ioc_err(ioc, "%s: handshake failed (r=%d)\n", __func__, r); + return r; + } + + pfacts = &ioc->pfacts[port]; + memset(pfacts, 0, sizeof(struct mpt3sas_port_facts)); + pfacts->PortNumber = mpi_reply.PortNumber; + pfacts->VP_ID = mpi_reply.VP_ID; + pfacts->VF_ID = mpi_reply.VF_ID; + pfacts->MaxPostedCmdBuffers = + le16_to_cpu(mpi_reply.MaxPostedCmdBuffers); + + return 0; +} + +/** + * _base_wait_for_iocstate - Wait until the card is in READY or OPERATIONAL + * @ioc: per adapter object + * @timeout: + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_wait_for_iocstate(struct MPT3SAS_ADAPTER *ioc, int timeout) +{ + u32 ioc_state; + int rc; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + if (ioc->pci_error_recovery) { + dfailprintk(ioc, + ioc_info(ioc, "%s: host in pci error recovery\n", + __func__)); + return -EFAULT; + } + + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); + dhsprintk(ioc, + ioc_info(ioc, "%s: ioc_state(0x%08x)\n", + __func__, ioc_state)); + + if (((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY) || + (ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL) + return 0; + + if (ioc_state & MPI2_DOORBELL_USED) { + dhsprintk(ioc, ioc_info(ioc, "unexpected doorbell active!\n")); + goto issue_diag_reset; + } + + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) { + mpt3sas_print_fault_code(ioc, ioc_state & + MPI2_DOORBELL_DATA_MASK); + goto issue_diag_reset; + } else if ((ioc_state & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_COREDUMP) { + ioc_info(ioc, + "%s: Skipping the diag reset here. (ioc_state=0x%x)\n", + __func__, ioc_state); + return -EFAULT; + } + + ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, timeout); + if (ioc_state) { + dfailprintk(ioc, + ioc_info(ioc, "%s: failed going to ready state (ioc_state=0x%x)\n", + __func__, ioc_state)); + return -EFAULT; + } + + issue_diag_reset: + rc = _base_diag_reset(ioc); + return rc; +} + +/** + * _base_get_ioc_facts - obtain ioc facts reply and save in ioc + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_get_ioc_facts(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2IOCFactsRequest_t mpi_request; + Mpi2IOCFactsReply_t mpi_reply; + struct mpt3sas_facts *facts; + int mpi_reply_sz, mpi_request_sz, r; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + r = _base_wait_for_iocstate(ioc, 10); + if (r) { + dfailprintk(ioc, + ioc_info(ioc, "%s: failed getting to correct state\n", + __func__)); + return r; + } + mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t); + mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t); + memset(&mpi_request, 0, mpi_request_sz); + mpi_request.Function = MPI2_FUNCTION_IOC_FACTS; + r = _base_handshake_req_reply_wait(ioc, mpi_request_sz, + (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5); + + if (r != 0) { + ioc_err(ioc, "%s: handshake failed (r=%d)\n", __func__, r); + return r; + } + + facts = &ioc->facts; + memset(facts, 0, sizeof(struct mpt3sas_facts)); + facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion); + facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion); + facts->VP_ID = mpi_reply.VP_ID; + facts->VF_ID = mpi_reply.VF_ID; + facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions); + facts->MaxChainDepth = mpi_reply.MaxChainDepth; + facts->WhoInit = mpi_reply.WhoInit; + facts->NumberOfPorts = mpi_reply.NumberOfPorts; + facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors; + if (ioc->msix_enable && (facts->MaxMSIxVectors <= + MAX_COMBINED_MSIX_VECTORS(ioc->is_gen35_ioc))) + ioc->combined_reply_queue = 0; + facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit); + facts->MaxReplyDescriptorPostQueueDepth = + le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth); + facts->ProductID = le16_to_cpu(mpi_reply.ProductID); + facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities); + if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID)) + ioc->ir_firmware = 1; + if ((facts->IOCCapabilities & + MPI2_IOCFACTS_CAPABILITY_RDPQ_ARRAY_CAPABLE) && (!reset_devices)) + ioc->rdpq_array_capable = 1; + if ((facts->IOCCapabilities & MPI26_IOCFACTS_CAPABILITY_ATOMIC_REQ) + && ioc->is_aero_ioc) + ioc->atomic_desc_capable = 1; + facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word); + facts->IOCRequestFrameSize = + le16_to_cpu(mpi_reply.IOCRequestFrameSize); + if (ioc->hba_mpi_version_belonged != MPI2_VERSION) { + facts->IOCMaxChainSegmentSize = + le16_to_cpu(mpi_reply.IOCMaxChainSegmentSize); + } + facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators); + facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets); + ioc->shost->max_id = -1; + facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders); + facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures); + facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags); + facts->HighPriorityCredit = + le16_to_cpu(mpi_reply.HighPriorityCredit); + facts->ReplyFrameSize = mpi_reply.ReplyFrameSize; + facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle); + facts->CurrentHostPageSize = mpi_reply.CurrentHostPageSize; + + /* + * Get the Page Size from IOC Facts. If it's 0, default to 4k. + */ + ioc->page_size = 1 << facts->CurrentHostPageSize; + if (ioc->page_size == 1) { + ioc_info(ioc, "CurrentHostPageSize is 0: Setting default host page size to 4k\n"); + ioc->page_size = 1 << MPT3SAS_HOST_PAGE_SIZE_4K; + } + dinitprintk(ioc, + ioc_info(ioc, "CurrentHostPageSize(%d)\n", + facts->CurrentHostPageSize)); + + dinitprintk(ioc, + ioc_info(ioc, "hba queue depth(%d), max chains per io(%d)\n", + facts->RequestCredit, facts->MaxChainDepth)); + dinitprintk(ioc, + ioc_info(ioc, "request frame size(%d), reply frame size(%d)\n", + facts->IOCRequestFrameSize * 4, + facts->ReplyFrameSize * 4)); + return 0; +} + +/** + * _base_send_ioc_init - send ioc_init to firmware + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_send_ioc_init(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2IOCInitRequest_t mpi_request; + Mpi2IOCInitReply_t mpi_reply; + int i, r = 0; + ktime_t current_time; + u16 ioc_status; + u32 reply_post_free_array_sz = 0; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t)); + mpi_request.Function = MPI2_FUNCTION_IOC_INIT; + mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER; + mpi_request.VF_ID = 0; /* TODO */ + mpi_request.VP_ID = 0; + mpi_request.MsgVersion = cpu_to_le16(ioc->hba_mpi_version_belonged); + mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); + mpi_request.HostPageSize = MPT3SAS_HOST_PAGE_SIZE_4K; + + if (_base_is_controller_msix_enabled(ioc)) + mpi_request.HostMSIxVectors = ioc->reply_queue_count; + mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4); + mpi_request.ReplyDescriptorPostQueueDepth = + cpu_to_le16(ioc->reply_post_queue_depth); + mpi_request.ReplyFreeQueueDepth = + cpu_to_le16(ioc->reply_free_queue_depth); + + mpi_request.SenseBufferAddressHigh = + cpu_to_le32((u64)ioc->sense_dma >> 32); + mpi_request.SystemReplyAddressHigh = + cpu_to_le32((u64)ioc->reply_dma >> 32); + mpi_request.SystemRequestFrameBaseAddress = + cpu_to_le64((u64)ioc->request_dma); + mpi_request.ReplyFreeQueueAddress = + cpu_to_le64((u64)ioc->reply_free_dma); + + if (ioc->rdpq_array_enable) { + reply_post_free_array_sz = ioc->reply_queue_count * + sizeof(Mpi2IOCInitRDPQArrayEntry); + memset(ioc->reply_post_free_array, 0, reply_post_free_array_sz); + for (i = 0; i < ioc->reply_queue_count; i++) + ioc->reply_post_free_array[i].RDPQBaseAddress = + cpu_to_le64( + (u64)ioc->reply_post[i].reply_post_free_dma); + mpi_request.MsgFlags = MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE; + mpi_request.ReplyDescriptorPostQueueAddress = + cpu_to_le64((u64)ioc->reply_post_free_array_dma); + } else { + mpi_request.ReplyDescriptorPostQueueAddress = + cpu_to_le64((u64)ioc->reply_post[0].reply_post_free_dma); + } + + /* + * Set the flag to enable CoreDump state feature in IOC firmware. + */ + mpi_request.ConfigurationFlags |= + cpu_to_le16(MPI26_IOCINIT_CFGFLAGS_COREDUMP_ENABLE); + + /* This time stamp specifies number of milliseconds + * since epoch ~ midnight January 1, 1970. + */ + current_time = ktime_get_real(); + mpi_request.TimeStamp = cpu_to_le64(ktime_to_ms(current_time)); + + if (ioc->logging_level & MPT_DEBUG_INIT) { + __le32 *mfp; + int i; + + mfp = (__le32 *)&mpi_request; + ioc_info(ioc, "\toffset:data\n"); + for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++) + ioc_info(ioc, "\t[0x%02x]:%08x\n", i*4, + le32_to_cpu(mfp[i])); + } + + r = _base_handshake_req_reply_wait(ioc, + sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request, + sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 30); + + if (r != 0) { + ioc_err(ioc, "%s: handshake failed (r=%d)\n", __func__, r); + return r; + } + + ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS || + mpi_reply.IOCLogInfo) { + ioc_err(ioc, "%s: failed\n", __func__); + r = -EIO; + } + + /* Reset TimeSync Counter*/ + ioc->timestamp_update_count = 0; + return r; +} + +/** + * mpt3sas_port_enable_done - command completion routine for port enable + * @ioc: per adapter object + * @smid: system request message index + * @msix_index: MSIX table index supplied by the OS + * @reply: reply message frame(lower 32bit addr) + * + * Return: 1 meaning mf should be freed from _base_interrupt + * 0 means the mf is freed from this function. + */ +u8 +mpt3sas_port_enable_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, + u32 reply) +{ + MPI2DefaultReply_t *mpi_reply; + u16 ioc_status; + + if (ioc->port_enable_cmds.status == MPT3_CMD_NOT_USED) + return 1; + + mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); + if (!mpi_reply) + return 1; + + if (mpi_reply->Function != MPI2_FUNCTION_PORT_ENABLE) + return 1; + + ioc->port_enable_cmds.status &= ~MPT3_CMD_PENDING; + ioc->port_enable_cmds.status |= MPT3_CMD_COMPLETE; + ioc->port_enable_cmds.status |= MPT3_CMD_REPLY_VALID; + memcpy(ioc->port_enable_cmds.reply, mpi_reply, mpi_reply->MsgLength*4); + ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) + ioc->port_enable_failed = 1; + + if (ioc->port_enable_cmds.status & MPT3_CMD_COMPLETE_ASYNC) { + ioc->port_enable_cmds.status &= ~MPT3_CMD_COMPLETE_ASYNC; + if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { + mpt3sas_port_enable_complete(ioc); + return 1; + } else { + ioc->start_scan_failed = ioc_status; + ioc->start_scan = 0; + return 1; + } + } + complete(&ioc->port_enable_cmds.done); + return 1; +} + +/** + * _base_send_port_enable - send port_enable(discovery stuff) to firmware + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_send_port_enable(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2PortEnableRequest_t *mpi_request; + Mpi2PortEnableReply_t *mpi_reply; + int r = 0; + u16 smid; + u16 ioc_status; + + ioc_info(ioc, "sending port enable !!\n"); + + if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) { + ioc_err(ioc, "%s: internal command already in use\n", __func__); + return -EAGAIN; + } + + smid = mpt3sas_base_get_smid(ioc, ioc->port_enable_cb_idx); + if (!smid) { + ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); + return -EAGAIN; + } + + ioc->port_enable_cmds.status = MPT3_CMD_PENDING; + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->port_enable_cmds.smid = smid; + memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t)); + mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE; + + init_completion(&ioc->port_enable_cmds.done); + ioc->put_smid_default(ioc, smid); + wait_for_completion_timeout(&ioc->port_enable_cmds.done, 300*HZ); + if (!(ioc->port_enable_cmds.status & MPT3_CMD_COMPLETE)) { + ioc_err(ioc, "%s: timeout\n", __func__); + _debug_dump_mf(mpi_request, + sizeof(Mpi2PortEnableRequest_t)/4); + if (ioc->port_enable_cmds.status & MPT3_CMD_RESET) + r = -EFAULT; + else + r = -ETIME; + goto out; + } + + mpi_reply = ioc->port_enable_cmds.reply; + ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; + if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { + ioc_err(ioc, "%s: failed with (ioc_status=0x%08x)\n", + __func__, ioc_status); + r = -EFAULT; + goto out; + } + + out: + ioc->port_enable_cmds.status = MPT3_CMD_NOT_USED; + ioc_info(ioc, "port enable: %s\n", r == 0 ? "SUCCESS" : "FAILED"); + return r; +} + +/** + * mpt3sas_port_enable - initiate firmware discovery (don't wait for reply) + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_port_enable(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2PortEnableRequest_t *mpi_request; + u16 smid; + + ioc_info(ioc, "sending port enable !!\n"); + + if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) { + ioc_err(ioc, "%s: internal command already in use\n", __func__); + return -EAGAIN; + } + + smid = mpt3sas_base_get_smid(ioc, ioc->port_enable_cb_idx); + if (!smid) { + ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); + return -EAGAIN; + } + ioc->drv_internal_flags |= MPT_DRV_INTERNAL_FIRST_PE_ISSUED; + ioc->port_enable_cmds.status = MPT3_CMD_PENDING; + ioc->port_enable_cmds.status |= MPT3_CMD_COMPLETE_ASYNC; + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->port_enable_cmds.smid = smid; + memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t)); + mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE; + + ioc->put_smid_default(ioc, smid); + return 0; +} + +/** + * _base_determine_wait_on_discovery - desposition + * @ioc: per adapter object + * + * Decide whether to wait on discovery to complete. Used to either + * locate boot device, or report volumes ahead of physical devices. + * + * Return: 1 for wait, 0 for don't wait. + */ +static int +_base_determine_wait_on_discovery(struct MPT3SAS_ADAPTER *ioc) +{ + /* We wait for discovery to complete if IR firmware is loaded. + * The sas topology events arrive before PD events, so we need time to + * turn on the bit in ioc->pd_handles to indicate PD + * Also, it maybe required to report Volumes ahead of physical + * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set. + */ + if (ioc->ir_firmware) + return 1; + + /* if no Bios, then we don't need to wait */ + if (!ioc->bios_pg3.BiosVersion) + return 0; + + /* Bios is present, then we drop down here. + * + * If there any entries in the Bios Page 2, then we wait + * for discovery to complete. + */ + + /* Current Boot Device */ + if ((ioc->bios_pg2.CurrentBootDeviceForm & + MPI2_BIOSPAGE2_FORM_MASK) == + MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED && + /* Request Boot Device */ + (ioc->bios_pg2.ReqBootDeviceForm & + MPI2_BIOSPAGE2_FORM_MASK) == + MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED && + /* Alternate Request Boot Device */ + (ioc->bios_pg2.ReqAltBootDeviceForm & + MPI2_BIOSPAGE2_FORM_MASK) == + MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED) + return 0; + + return 1; +} + +/** + * _base_unmask_events - turn on notification for this event + * @ioc: per adapter object + * @event: firmware event + * + * The mask is stored in ioc->event_masks. + */ +static void +_base_unmask_events(struct MPT3SAS_ADAPTER *ioc, u16 event) +{ + u32 desired_event; + + if (event >= 128) + return; + + desired_event = (1 << (event % 32)); + + if (event < 32) + ioc->event_masks[0] &= ~desired_event; + else if (event < 64) + ioc->event_masks[1] &= ~desired_event; + else if (event < 96) + ioc->event_masks[2] &= ~desired_event; + else if (event < 128) + ioc->event_masks[3] &= ~desired_event; +} + +/** + * _base_event_notification - send event notification + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_event_notification(struct MPT3SAS_ADAPTER *ioc) +{ + Mpi2EventNotificationRequest_t *mpi_request; + u16 smid; + int r = 0; + int i, issue_diag_reset = 0; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + if (ioc->base_cmds.status & MPT3_CMD_PENDING) { + ioc_err(ioc, "%s: internal command already in use\n", __func__); + return -EAGAIN; + } + + smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx); + if (!smid) { + ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); + return -EAGAIN; + } + ioc->base_cmds.status = MPT3_CMD_PENDING; + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); + ioc->base_cmds.smid = smid; + memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t)); + mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION; + mpi_request->VF_ID = 0; /* TODO */ + mpi_request->VP_ID = 0; + for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) + mpi_request->EventMasks[i] = + cpu_to_le32(ioc->event_masks[i]); + init_completion(&ioc->base_cmds.done); + ioc->put_smid_default(ioc, smid); + wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ); + if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) { + ioc_err(ioc, "%s: timeout\n", __func__); + _debug_dump_mf(mpi_request, + sizeof(Mpi2EventNotificationRequest_t)/4); + if (ioc->base_cmds.status & MPT3_CMD_RESET) + r = -EFAULT; + else + issue_diag_reset = 1; + + } else + dinitprintk(ioc, ioc_info(ioc, "%s: complete\n", __func__)); + ioc->base_cmds.status = MPT3_CMD_NOT_USED; + + if (issue_diag_reset) { + if (ioc->drv_internal_flags & MPT_DRV_INTERNAL_FIRST_PE_ISSUED) + return -EFAULT; + if (mpt3sas_base_check_for_fault_and_issue_reset(ioc)) + return -EFAULT; + r = -EAGAIN; + } + return r; +} + +/** + * mpt3sas_base_validate_event_type - validating event types + * @ioc: per adapter object + * @event_type: firmware event + * + * This will turn on firmware event notification when application + * ask for that event. We don't mask events that are already enabled. + */ +void +mpt3sas_base_validate_event_type(struct MPT3SAS_ADAPTER *ioc, u32 *event_type) +{ + int i, j; + u32 event_mask, desired_event; + u8 send_update_to_fw; + + for (i = 0, send_update_to_fw = 0; i < + MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) { + event_mask = ~event_type[i]; + desired_event = 1; + for (j = 0; j < 32; j++) { + if (!(event_mask & desired_event) && + (ioc->event_masks[i] & desired_event)) { + ioc->event_masks[i] &= ~desired_event; + send_update_to_fw = 1; + } + desired_event = (desired_event << 1); + } + } + + if (!send_update_to_fw) + return; + + mutex_lock(&ioc->base_cmds.mutex); + _base_event_notification(ioc); + mutex_unlock(&ioc->base_cmds.mutex); +} + +/** + * _base_diag_reset - the "big hammer" start of day reset + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_diag_reset(struct MPT3SAS_ADAPTER *ioc) +{ + u32 host_diagnostic; + u32 ioc_state; + u32 count; + u32 hcb_size; + + ioc_info(ioc, "sending diag reset !!\n"); + + pci_cfg_access_lock(ioc->pdev); + + drsprintk(ioc, ioc_info(ioc, "clear interrupts\n")); + + count = 0; + do { + /* Write magic sequence to WriteSequence register + * Loop until in diagnostic mode + */ + drsprintk(ioc, ioc_info(ioc, "write magic sequence\n")); + writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence); + writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence); + writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence); + writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence); + writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence); + writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence); + writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence); + + /* wait 100 msec */ + msleep(100); + + if (count++ > 20) { + ioc_info(ioc, + "Stop writing magic sequence after 20 retries\n"); + _base_dump_reg_set(ioc); + goto out; + } + + host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic); + drsprintk(ioc, + ioc_info(ioc, "wrote magic sequence: count(%d), host_diagnostic(0x%08x)\n", + count, host_diagnostic)); + + } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0); + + hcb_size = ioc->base_readl(&ioc->chip->HCBSize); + + drsprintk(ioc, ioc_info(ioc, "diag reset: issued\n")); + writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER, + &ioc->chip->HostDiagnostic); + + /*This delay allows the chip PCIe hardware time to finish reset tasks*/ + msleep(MPI2_HARD_RESET_PCIE_FIRST_READ_DELAY_MICRO_SEC/1000); + + /* Approximately 300 second max wait */ + for (count = 0; count < (300000000 / + MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC); count++) { + + host_diagnostic = ioc->base_readl_ext_retry(&ioc->chip->HostDiagnostic); + + if (host_diagnostic == 0xFFFFFFFF) { + ioc_info(ioc, + "Invalid host diagnostic register value\n"); + _base_dump_reg_set(ioc); + goto out; + } + if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER)) + break; + + msleep(MPI2_HARD_RESET_PCIE_SECOND_READ_DELAY_MICRO_SEC / 1000); + } + + if (host_diagnostic & MPI2_DIAG_HCB_MODE) { + + drsprintk(ioc, + ioc_info(ioc, "restart the adapter assuming the HCB Address points to good F/W\n")); + host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK; + host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW; + writel(host_diagnostic, &ioc->chip->HostDiagnostic); + + drsprintk(ioc, ioc_info(ioc, "re-enable the HCDW\n")); + writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE, + &ioc->chip->HCBSize); + } + + drsprintk(ioc, ioc_info(ioc, "restart the adapter\n")); + writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET, + &ioc->chip->HostDiagnostic); + + drsprintk(ioc, + ioc_info(ioc, "disable writes to the diagnostic register\n")); + writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence); + + drsprintk(ioc, ioc_info(ioc, "Wait for FW to go to the READY state\n")); + ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20); + if (ioc_state) { + ioc_err(ioc, "%s: failed going to ready state (ioc_state=0x%x)\n", + __func__, ioc_state); + _base_dump_reg_set(ioc); + goto out; + } + + pci_cfg_access_unlock(ioc->pdev); + ioc_info(ioc, "diag reset: SUCCESS\n"); + return 0; + + out: + pci_cfg_access_unlock(ioc->pdev); + ioc_err(ioc, "diag reset: FAILED\n"); + return -EFAULT; +} + +/** + * mpt3sas_base_make_ioc_ready - put controller in READY state + * @ioc: per adapter object + * @type: FORCE_BIG_HAMMER or SOFT_RESET + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_make_ioc_ready(struct MPT3SAS_ADAPTER *ioc, enum reset_type type) +{ + u32 ioc_state; + int rc; + int count; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + if (ioc->pci_error_recovery) + return 0; + + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); + dhsprintk(ioc, + ioc_info(ioc, "%s: ioc_state(0x%08x)\n", + __func__, ioc_state)); + + /* if in RESET state, it should move to READY state shortly */ + count = 0; + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_RESET) { + while ((ioc_state & MPI2_IOC_STATE_MASK) != + MPI2_IOC_STATE_READY) { + if (count++ == 10) { + ioc_err(ioc, "%s: failed going to ready state (ioc_state=0x%x)\n", + __func__, ioc_state); + return -EFAULT; + } + ssleep(1); + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); + } + } + + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY) + return 0; + + if (ioc_state & MPI2_DOORBELL_USED) { + ioc_info(ioc, "unexpected doorbell active!\n"); + goto issue_diag_reset; + } + + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) { + mpt3sas_print_fault_code(ioc, ioc_state & + MPI2_DOORBELL_DATA_MASK); + goto issue_diag_reset; + } + + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_COREDUMP) { + /* + * if host reset is invoked while watch dog thread is waiting + * for IOC state to be changed to Fault state then driver has + * to wait here for CoreDump state to clear otherwise reset + * will be issued to the FW and FW move the IOC state to + * reset state without copying the FW logs to coredump region. + */ + if (ioc->ioc_coredump_loop != MPT3SAS_COREDUMP_LOOP_DONE) { + mpt3sas_print_coredump_info(ioc, ioc_state & + MPI2_DOORBELL_DATA_MASK); + mpt3sas_base_wait_for_coredump_completion(ioc, + __func__); + } + goto issue_diag_reset; + } + + if (type == FORCE_BIG_HAMMER) + goto issue_diag_reset; + + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL) + if (!(_base_send_ioc_reset(ioc, + MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15))) { + return 0; + } + + issue_diag_reset: + rc = _base_diag_reset(ioc); + return rc; +} + +/** + * _base_make_ioc_operational - put controller in OPERATIONAL state + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +static int +_base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc) +{ + int r, i, index, rc; + unsigned long flags; + u32 reply_address; + u16 smid; + struct _tr_list *delayed_tr, *delayed_tr_next; + struct _sc_list *delayed_sc, *delayed_sc_next; + struct _event_ack_list *delayed_event_ack, *delayed_event_ack_next; + u8 hide_flag; + struct adapter_reply_queue *reply_q; + Mpi2ReplyDescriptorsUnion_t *reply_post_free_contig; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + /* clean the delayed target reset list */ + list_for_each_entry_safe(delayed_tr, delayed_tr_next, + &ioc->delayed_tr_list, list) { + list_del(&delayed_tr->list); + kfree(delayed_tr); + } + + + list_for_each_entry_safe(delayed_tr, delayed_tr_next, + &ioc->delayed_tr_volume_list, list) { + list_del(&delayed_tr->list); + kfree(delayed_tr); + } + + list_for_each_entry_safe(delayed_sc, delayed_sc_next, + &ioc->delayed_sc_list, list) { + list_del(&delayed_sc->list); + kfree(delayed_sc); + } + + list_for_each_entry_safe(delayed_event_ack, delayed_event_ack_next, + &ioc->delayed_event_ack_list, list) { + list_del(&delayed_event_ack->list); + kfree(delayed_event_ack); + } + + spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); + + /* hi-priority queue */ + INIT_LIST_HEAD(&ioc->hpr_free_list); + smid = ioc->hi_priority_smid; + for (i = 0; i < ioc->hi_priority_depth; i++, smid++) { + ioc->hpr_lookup[i].cb_idx = 0xFF; + ioc->hpr_lookup[i].smid = smid; + list_add_tail(&ioc->hpr_lookup[i].tracker_list, + &ioc->hpr_free_list); + } + + /* internal queue */ + INIT_LIST_HEAD(&ioc->internal_free_list); + smid = ioc->internal_smid; + for (i = 0; i < ioc->internal_depth; i++, smid++) { + ioc->internal_lookup[i].cb_idx = 0xFF; + ioc->internal_lookup[i].smid = smid; + list_add_tail(&ioc->internal_lookup[i].tracker_list, + &ioc->internal_free_list); + } + + spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); + + /* initialize Reply Free Queue */ + for (i = 0, reply_address = (u32)ioc->reply_dma ; + i < ioc->reply_free_queue_depth ; i++, reply_address += + ioc->reply_sz) { + ioc->reply_free[i] = cpu_to_le32(reply_address); + if (ioc->is_mcpu_endpoint) + _base_clone_reply_to_sys_mem(ioc, + reply_address, i); + } + + /* initialize reply queues */ + if (ioc->is_driver_loading) + _base_assign_reply_queues(ioc); + + /* initialize Reply Post Free Queue */ + index = 0; + reply_post_free_contig = ioc->reply_post[0].reply_post_free; + list_for_each_entry(reply_q, &ioc->reply_queue_list, list) { + /* + * If RDPQ is enabled, switch to the next allocation. + * Otherwise advance within the contiguous region. + */ + if (ioc->rdpq_array_enable) { + reply_q->reply_post_free = + ioc->reply_post[index++].reply_post_free; + } else { + reply_q->reply_post_free = reply_post_free_contig; + reply_post_free_contig += ioc->reply_post_queue_depth; + } + + reply_q->reply_post_host_index = 0; + for (i = 0; i < ioc->reply_post_queue_depth; i++) + reply_q->reply_post_free[i].Words = + cpu_to_le64(ULLONG_MAX); + if (!_base_is_controller_msix_enabled(ioc)) + goto skip_init_reply_post_free_queue; + } + skip_init_reply_post_free_queue: + + r = _base_send_ioc_init(ioc); + if (r) { + /* + * No need to check IOC state for fault state & issue + * diag reset during host reset. This check is need + * only during driver load time. + */ + if (!ioc->is_driver_loading) + return r; + + rc = mpt3sas_base_check_for_fault_and_issue_reset(ioc); + if (rc || (_base_send_ioc_init(ioc))) + return r; + } + + /* initialize reply free host index */ + ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1; + writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex); + + /* initialize reply post host index */ + list_for_each_entry(reply_q, &ioc->reply_queue_list, list) { + if (ioc->combined_reply_queue) + writel((reply_q->msix_index & 7)<< + MPI2_RPHI_MSIX_INDEX_SHIFT, + ioc->replyPostRegisterIndex[reply_q->msix_index/8]); + else + writel(reply_q->msix_index << + MPI2_RPHI_MSIX_INDEX_SHIFT, + &ioc->chip->ReplyPostHostIndex); + + if (!_base_is_controller_msix_enabled(ioc)) + goto skip_init_reply_post_host_index; + } + + skip_init_reply_post_host_index: + + mpt3sas_base_unmask_interrupts(ioc); + + if (ioc->hba_mpi_version_belonged != MPI2_VERSION) { + r = _base_display_fwpkg_version(ioc); + if (r) + return r; + } + + r = _base_static_config_pages(ioc); + if (r) + return r; + + r = _base_event_notification(ioc); + if (r) + return r; + + if (!ioc->shost_recovery) { + + if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier + == 0x80) { + hide_flag = (u8) ( + le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) & + MFG_PAGE10_HIDE_SSDS_MASK); + if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK) + ioc->mfg_pg10_hide_flag = hide_flag; + } + + ioc->wait_for_discovery_to_complete = + _base_determine_wait_on_discovery(ioc); + + return r; /* scan_start and scan_finished support */ + } + + r = _base_send_port_enable(ioc); + if (r) + return r; + + return r; +} + +/** + * mpt3sas_base_free_resources - free resources controller resources + * @ioc: per adapter object + */ +void +mpt3sas_base_free_resources(struct MPT3SAS_ADAPTER *ioc) +{ + dexitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + /* synchronizing freeing resource with pci_access_mutex lock */ + mutex_lock(&ioc->pci_access_mutex); + if (ioc->chip_phys && ioc->chip) { + mpt3sas_base_mask_interrupts(ioc); + ioc->shost_recovery = 1; + mpt3sas_base_make_ioc_ready(ioc, SOFT_RESET); + ioc->shost_recovery = 0; + } + + mpt3sas_base_unmap_resources(ioc); + mutex_unlock(&ioc->pci_access_mutex); + return; +} + +/** + * mpt3sas_base_attach - attach controller instance + * @ioc: per adapter object + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc) +{ + int r, i, rc; + int cpu_id, last_cpu_id = 0; + + dinitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + /* setup cpu_msix_table */ + ioc->cpu_count = num_online_cpus(); + for_each_online_cpu(cpu_id) + last_cpu_id = cpu_id; + ioc->cpu_msix_table_sz = last_cpu_id + 1; + ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL); + ioc->reply_queue_count = 1; + if (!ioc->cpu_msix_table) { + ioc_info(ioc, "Allocation for cpu_msix_table failed!!!\n"); + r = -ENOMEM; + goto out_free_resources; + } + + if (ioc->is_warpdrive) { + ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz, + sizeof(resource_size_t *), GFP_KERNEL); + if (!ioc->reply_post_host_index) { + ioc_info(ioc, "Allocation for reply_post_host_index failed!!!\n"); + r = -ENOMEM; + goto out_free_resources; + } + } + + ioc->smp_affinity_enable = smp_affinity_enable; + + ioc->rdpq_array_enable_assigned = 0; + ioc->use_32bit_dma = false; + ioc->dma_mask = 64; + if (ioc->is_aero_ioc) { + ioc->base_readl = &_base_readl_aero; + ioc->base_readl_ext_retry = &_base_readl_ext_retry; + } else { + ioc->base_readl = &_base_readl; + ioc->base_readl_ext_retry = &_base_readl; + } + r = mpt3sas_base_map_resources(ioc); + if (r) + goto out_free_resources; + + pci_set_drvdata(ioc->pdev, ioc->shost); + r = _base_get_ioc_facts(ioc); + if (r) { + rc = mpt3sas_base_check_for_fault_and_issue_reset(ioc); + if (rc || (_base_get_ioc_facts(ioc))) + goto out_free_resources; + } + + switch (ioc->hba_mpi_version_belonged) { + case MPI2_VERSION: + ioc->build_sg_scmd = &_base_build_sg_scmd; + ioc->build_sg = &_base_build_sg; + ioc->build_zero_len_sge = &_base_build_zero_len_sge; + ioc->get_msix_index_for_smlio = &_base_get_msix_index; + break; + case MPI25_VERSION: + case MPI26_VERSION: + /* + * In SAS3.0, + * SCSI_IO, SMP_PASSTHRU, SATA_PASSTHRU, Target Assist, and + * Target Status - all require the IEEE formatted scatter gather + * elements. + */ + ioc->build_sg_scmd = &_base_build_sg_scmd_ieee; + ioc->build_sg = &_base_build_sg_ieee; + ioc->build_nvme_prp = &_base_build_nvme_prp; + ioc->build_zero_len_sge = &_base_build_zero_len_sge_ieee; + ioc->sge_size_ieee = sizeof(Mpi2IeeeSgeSimple64_t); + if (ioc->high_iops_queues) + ioc->get_msix_index_for_smlio = + &_base_get_high_iops_msix_index; + else + ioc->get_msix_index_for_smlio = &_base_get_msix_index; + break; + } + if (ioc->atomic_desc_capable) { + ioc->put_smid_default = &_base_put_smid_default_atomic; + ioc->put_smid_scsi_io = &_base_put_smid_scsi_io_atomic; + ioc->put_smid_fast_path = + &_base_put_smid_fast_path_atomic; + ioc->put_smid_hi_priority = + &_base_put_smid_hi_priority_atomic; + } else { + ioc->put_smid_default = &_base_put_smid_default; + ioc->put_smid_fast_path = &_base_put_smid_fast_path; + ioc->put_smid_hi_priority = &_base_put_smid_hi_priority; + if (ioc->is_mcpu_endpoint) + ioc->put_smid_scsi_io = + &_base_put_smid_mpi_ep_scsi_io; + else + ioc->put_smid_scsi_io = &_base_put_smid_scsi_io; + } + /* + * These function pointers for other requests that don't + * the require IEEE scatter gather elements. + * + * For example Configuration Pages and SAS IOUNIT Control don't. + */ + ioc->build_sg_mpi = &_base_build_sg; + ioc->build_zero_len_sge_mpi = &_base_build_zero_len_sge; + + r = mpt3sas_base_make_ioc_ready(ioc, SOFT_RESET); + if (r) + goto out_free_resources; + + ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts, + sizeof(struct mpt3sas_port_facts), GFP_KERNEL); + if (!ioc->pfacts) { + r = -ENOMEM; + goto out_free_resources; + } + + for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) { + r = _base_get_port_facts(ioc, i); + if (r) { + rc = mpt3sas_base_check_for_fault_and_issue_reset(ioc); + if (rc || (_base_get_port_facts(ioc, i))) + goto out_free_resources; + } + } + + r = _base_allocate_memory_pools(ioc); + if (r) + goto out_free_resources; + + if (irqpoll_weight > 0) + ioc->thresh_hold = irqpoll_weight; + else + ioc->thresh_hold = ioc->hba_queue_depth/4; + + _base_init_irqpolls(ioc); + init_waitqueue_head(&ioc->reset_wq); + + /* allocate memory pd handle bitmask list */ + ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8); + if (ioc->facts.MaxDevHandle % 8) + ioc->pd_handles_sz++; + ioc->pd_handles = kzalloc(ioc->pd_handles_sz, + GFP_KERNEL); + if (!ioc->pd_handles) { + r = -ENOMEM; + goto out_free_resources; + } + ioc->blocking_handles = kzalloc(ioc->pd_handles_sz, + GFP_KERNEL); + if (!ioc->blocking_handles) { + r = -ENOMEM; + goto out_free_resources; + } + + /* allocate memory for pending OS device add list */ + ioc->pend_os_device_add_sz = (ioc->facts.MaxDevHandle / 8); + if (ioc->facts.MaxDevHandle % 8) + ioc->pend_os_device_add_sz++; + ioc->pend_os_device_add = kzalloc(ioc->pend_os_device_add_sz, + GFP_KERNEL); + if (!ioc->pend_os_device_add) { + r = -ENOMEM; + goto out_free_resources; + } + + ioc->device_remove_in_progress_sz = ioc->pend_os_device_add_sz; + ioc->device_remove_in_progress = + kzalloc(ioc->device_remove_in_progress_sz, GFP_KERNEL); + if (!ioc->device_remove_in_progress) { + r = -ENOMEM; + goto out_free_resources; + } + + ioc->fwfault_debug = mpt3sas_fwfault_debug; + + /* base internal command bits */ + mutex_init(&ioc->base_cmds.mutex); + ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); + ioc->base_cmds.status = MPT3_CMD_NOT_USED; + + /* port_enable command bits */ + ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); + ioc->port_enable_cmds.status = MPT3_CMD_NOT_USED; + + /* transport internal command bits */ + ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); + ioc->transport_cmds.status = MPT3_CMD_NOT_USED; + mutex_init(&ioc->transport_cmds.mutex); + + /* scsih internal command bits */ + ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); + ioc->scsih_cmds.status = MPT3_CMD_NOT_USED; + mutex_init(&ioc->scsih_cmds.mutex); + + /* task management internal command bits */ + ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); + ioc->tm_cmds.status = MPT3_CMD_NOT_USED; + mutex_init(&ioc->tm_cmds.mutex); + + /* config page internal command bits */ + ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); + ioc->config_cmds.status = MPT3_CMD_NOT_USED; + mutex_init(&ioc->config_cmds.mutex); + + /* ctl module internal command bits */ + ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL); + ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); + ioc->ctl_cmds.status = MPT3_CMD_NOT_USED; + mutex_init(&ioc->ctl_cmds.mutex); + + if (!ioc->base_cmds.reply || !ioc->port_enable_cmds.reply || + !ioc->transport_cmds.reply || !ioc->scsih_cmds.reply || + !ioc->tm_cmds.reply || !ioc->config_cmds.reply || + !ioc->ctl_cmds.reply || !ioc->ctl_cmds.sense) { + r = -ENOMEM; + goto out_free_resources; + } + + for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) + ioc->event_masks[i] = -1; + + /* here we enable the events we care about */ + _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY); + _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE); + _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST); + _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE); + _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE); + _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST); + _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME); + _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK); + _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS); + _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED); + _base_unmask_events(ioc, MPI2_EVENT_TEMP_THRESHOLD); + _base_unmask_events(ioc, MPI2_EVENT_ACTIVE_CABLE_EXCEPTION); + _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_DISCOVERY_ERROR); + if (ioc->hba_mpi_version_belonged == MPI26_VERSION) { + if (ioc->is_gen35_ioc) { + _base_unmask_events(ioc, + MPI2_EVENT_PCIE_DEVICE_STATUS_CHANGE); + _base_unmask_events(ioc, MPI2_EVENT_PCIE_ENUMERATION); + _base_unmask_events(ioc, + MPI2_EVENT_PCIE_TOPOLOGY_CHANGE_LIST); + } + } + r = _base_make_ioc_operational(ioc); + if (r == -EAGAIN) { + r = _base_make_ioc_operational(ioc); + if (r) + goto out_free_resources; + } + + /* + * Copy current copy of IOCFacts in prev_fw_facts + * and it will be used during online firmware upgrade. + */ + memcpy(&ioc->prev_fw_facts, &ioc->facts, + sizeof(struct mpt3sas_facts)); + + ioc->non_operational_loop = 0; + ioc->ioc_coredump_loop = 0; + ioc->got_task_abort_from_ioctl = 0; + return 0; + + out_free_resources: + + ioc->remove_host = 1; + + mpt3sas_base_free_resources(ioc); + _base_release_memory_pools(ioc); + pci_set_drvdata(ioc->pdev, NULL); + kfree(ioc->cpu_msix_table); + if (ioc->is_warpdrive) + kfree(ioc->reply_post_host_index); + kfree(ioc->pd_handles); + kfree(ioc->blocking_handles); + kfree(ioc->device_remove_in_progress); + kfree(ioc->pend_os_device_add); + kfree(ioc->tm_cmds.reply); + kfree(ioc->transport_cmds.reply); + kfree(ioc->scsih_cmds.reply); + kfree(ioc->config_cmds.reply); + kfree(ioc->base_cmds.reply); + kfree(ioc->port_enable_cmds.reply); + kfree(ioc->ctl_cmds.reply); + kfree(ioc->ctl_cmds.sense); + kfree(ioc->pfacts); + ioc->ctl_cmds.reply = NULL; + ioc->base_cmds.reply = NULL; + ioc->tm_cmds.reply = NULL; + ioc->scsih_cmds.reply = NULL; + ioc->transport_cmds.reply = NULL; + ioc->config_cmds.reply = NULL; + ioc->pfacts = NULL; + return r; +} + + +/** + * mpt3sas_base_detach - remove controller instance + * @ioc: per adapter object + */ +void +mpt3sas_base_detach(struct MPT3SAS_ADAPTER *ioc) +{ + dexitprintk(ioc, ioc_info(ioc, "%s\n", __func__)); + + mpt3sas_base_stop_watchdog(ioc); + mpt3sas_base_free_resources(ioc); + _base_release_memory_pools(ioc); + mpt3sas_free_enclosure_list(ioc); + pci_set_drvdata(ioc->pdev, NULL); + kfree(ioc->cpu_msix_table); + if (ioc->is_warpdrive) + kfree(ioc->reply_post_host_index); + kfree(ioc->pd_handles); + kfree(ioc->blocking_handles); + kfree(ioc->device_remove_in_progress); + kfree(ioc->pend_os_device_add); + kfree(ioc->pfacts); + kfree(ioc->ctl_cmds.reply); + kfree(ioc->ctl_cmds.sense); + kfree(ioc->base_cmds.reply); + kfree(ioc->port_enable_cmds.reply); + kfree(ioc->tm_cmds.reply); + kfree(ioc->transport_cmds.reply); + kfree(ioc->scsih_cmds.reply); + kfree(ioc->config_cmds.reply); +} + +/** + * _base_pre_reset_handler - pre reset handler + * @ioc: per adapter object + */ +static void _base_pre_reset_handler(struct MPT3SAS_ADAPTER *ioc) +{ + mpt3sas_scsih_pre_reset_handler(ioc); + mpt3sas_ctl_pre_reset_handler(ioc); + dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_PRE_RESET\n", __func__)); +} + +/** + * _base_clear_outstanding_mpt_commands - clears outstanding mpt commands + * @ioc: per adapter object + */ +static void +_base_clear_outstanding_mpt_commands(struct MPT3SAS_ADAPTER *ioc) +{ + dtmprintk(ioc, + ioc_info(ioc, "%s: clear outstanding mpt cmds\n", __func__)); + if (ioc->transport_cmds.status & MPT3_CMD_PENDING) { + ioc->transport_cmds.status |= MPT3_CMD_RESET; + mpt3sas_base_free_smid(ioc, ioc->transport_cmds.smid); + complete(&ioc->transport_cmds.done); + } + if (ioc->base_cmds.status & MPT3_CMD_PENDING) { + ioc->base_cmds.status |= MPT3_CMD_RESET; + mpt3sas_base_free_smid(ioc, ioc->base_cmds.smid); + complete(&ioc->base_cmds.done); + } + if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) { + ioc->port_enable_failed = 1; + ioc->port_enable_cmds.status |= MPT3_CMD_RESET; + mpt3sas_base_free_smid(ioc, ioc->port_enable_cmds.smid); + if (ioc->is_driver_loading) { + ioc->start_scan_failed = + MPI2_IOCSTATUS_INTERNAL_ERROR; + ioc->start_scan = 0; + } else { + complete(&ioc->port_enable_cmds.done); + } + } + if (ioc->config_cmds.status & MPT3_CMD_PENDING) { + ioc->config_cmds.status |= MPT3_CMD_RESET; + mpt3sas_base_free_smid(ioc, ioc->config_cmds.smid); + ioc->config_cmds.smid = USHRT_MAX; + complete(&ioc->config_cmds.done); + } +} + +/** + * _base_clear_outstanding_commands - clear all outstanding commands + * @ioc: per adapter object + */ +static void _base_clear_outstanding_commands(struct MPT3SAS_ADAPTER *ioc) +{ + mpt3sas_scsih_clear_outstanding_scsi_tm_commands(ioc); + mpt3sas_ctl_clear_outstanding_ioctls(ioc); + _base_clear_outstanding_mpt_commands(ioc); +} + +/** + * _base_reset_done_handler - reset done handler + * @ioc: per adapter object + */ +static void _base_reset_done_handler(struct MPT3SAS_ADAPTER *ioc) +{ + mpt3sas_scsih_reset_done_handler(ioc); + mpt3sas_ctl_reset_done_handler(ioc); + dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_DONE_RESET\n", __func__)); +} + +/** + * mpt3sas_wait_for_commands_to_complete - reset controller + * @ioc: Pointer to MPT_ADAPTER structure + * + * This function is waiting 10s for all pending commands to complete + * prior to putting controller in reset. + */ +void +mpt3sas_wait_for_commands_to_complete(struct MPT3SAS_ADAPTER *ioc) +{ + u32 ioc_state; + + ioc->pending_io_count = 0; + + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); + if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL) + return; + + /* pending command count */ + ioc->pending_io_count = scsi_host_busy(ioc->shost); + + if (!ioc->pending_io_count) + return; + + /* wait for pending commands to complete */ + wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ); +} + +/** + * _base_check_ioc_facts_changes - Look for increase/decrease of IOCFacts + * attributes during online firmware upgrade and update the corresponding + * IOC variables accordingly. + * + * @ioc: Pointer to MPT_ADAPTER structure + */ +static int +_base_check_ioc_facts_changes(struct MPT3SAS_ADAPTER *ioc) +{ + u16 pd_handles_sz; + void *pd_handles = NULL, *blocking_handles = NULL; + void *pend_os_device_add = NULL, *device_remove_in_progress = NULL; + struct mpt3sas_facts *old_facts = &ioc->prev_fw_facts; + + if (ioc->facts.MaxDevHandle > old_facts->MaxDevHandle) { + pd_handles_sz = (ioc->facts.MaxDevHandle / 8); + if (ioc->facts.MaxDevHandle % 8) + pd_handles_sz++; + + pd_handles = krealloc(ioc->pd_handles, pd_handles_sz, + GFP_KERNEL); + if (!pd_handles) { + ioc_info(ioc, + "Unable to allocate the memory for pd_handles of sz: %d\n", + pd_handles_sz); + return -ENOMEM; + } + memset(pd_handles + ioc->pd_handles_sz, 0, + (pd_handles_sz - ioc->pd_handles_sz)); + ioc->pd_handles = pd_handles; + + blocking_handles = krealloc(ioc->blocking_handles, + pd_handles_sz, GFP_KERNEL); + if (!blocking_handles) { + ioc_info(ioc, + "Unable to allocate the memory for " + "blocking_handles of sz: %d\n", + pd_handles_sz); + return -ENOMEM; + } + memset(blocking_handles + ioc->pd_handles_sz, 0, + (pd_handles_sz - ioc->pd_handles_sz)); + ioc->blocking_handles = blocking_handles; + ioc->pd_handles_sz = pd_handles_sz; + + pend_os_device_add = krealloc(ioc->pend_os_device_add, + pd_handles_sz, GFP_KERNEL); + if (!pend_os_device_add) { + ioc_info(ioc, + "Unable to allocate the memory for pend_os_device_add of sz: %d\n", + pd_handles_sz); + return -ENOMEM; + } + memset(pend_os_device_add + ioc->pend_os_device_add_sz, 0, + (pd_handles_sz - ioc->pend_os_device_add_sz)); + ioc->pend_os_device_add = pend_os_device_add; + ioc->pend_os_device_add_sz = pd_handles_sz; + + device_remove_in_progress = krealloc( + ioc->device_remove_in_progress, pd_handles_sz, GFP_KERNEL); + if (!device_remove_in_progress) { + ioc_info(ioc, + "Unable to allocate the memory for " + "device_remove_in_progress of sz: %d\n " + , pd_handles_sz); + return -ENOMEM; + } + memset(device_remove_in_progress + + ioc->device_remove_in_progress_sz, 0, + (pd_handles_sz - ioc->device_remove_in_progress_sz)); + ioc->device_remove_in_progress = device_remove_in_progress; + ioc->device_remove_in_progress_sz = pd_handles_sz; + } + + memcpy(&ioc->prev_fw_facts, &ioc->facts, sizeof(struct mpt3sas_facts)); + return 0; +} + +/** + * mpt3sas_base_hard_reset_handler - reset controller + * @ioc: Pointer to MPT_ADAPTER structure + * @type: FORCE_BIG_HAMMER or SOFT_RESET + * + * Return: 0 for success, non-zero for failure. + */ +int +mpt3sas_base_hard_reset_handler(struct MPT3SAS_ADAPTER *ioc, + enum reset_type type) +{ + int r; + unsigned long flags; + u32 ioc_state; + u8 is_fault = 0, is_trigger = 0; + + dtmprintk(ioc, ioc_info(ioc, "%s: enter\n", __func__)); + + if (ioc->pci_error_recovery) { + ioc_err(ioc, "%s: pci error recovery reset\n", __func__); + r = 0; + goto out_unlocked; + } + + if (mpt3sas_fwfault_debug) + mpt3sas_halt_firmware(ioc); + + /* wait for an active reset in progress to complete */ + mutex_lock(&ioc->reset_in_progress_mutex); + + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + ioc->shost_recovery = 1; + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + + if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & + MPT3_DIAG_BUFFER_IS_REGISTERED) && + (!(ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & + MPT3_DIAG_BUFFER_IS_RELEASED))) { + is_trigger = 1; + ioc_state = mpt3sas_base_get_iocstate(ioc, 0); + if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT || + (ioc_state & MPI2_IOC_STATE_MASK) == + MPI2_IOC_STATE_COREDUMP) { + is_fault = 1; + ioc->htb_rel.trigger_info_dwords[1] = + (ioc_state & MPI2_DOORBELL_DATA_MASK); + } + } + _base_pre_reset_handler(ioc); + mpt3sas_wait_for_commands_to_complete(ioc); + mpt3sas_base_mask_interrupts(ioc); + mpt3sas_base_pause_mq_polling(ioc); + r = mpt3sas_base_make_ioc_ready(ioc, type); + if (r) + goto out; + _base_clear_outstanding_commands(ioc); + + /* If this hard reset is called while port enable is active, then + * there is no reason to call make_ioc_operational + */ + if (ioc->is_driver_loading && ioc->port_enable_failed) { + ioc->remove_host = 1; + r = -EFAULT; + goto out; + } + r = _base_get_ioc_facts(ioc); + if (r) + goto out; + + r = _base_check_ioc_facts_changes(ioc); + if (r) { + ioc_info(ioc, + "Some of the parameters got changed in this new firmware" + " image and it requires system reboot\n"); + goto out; + } + if (ioc->rdpq_array_enable && !ioc->rdpq_array_capable) + panic("%s: Issue occurred with flashing controller firmware." + "Please reboot the system and ensure that the correct" + " firmware version is running\n", ioc->name); + + r = _base_make_ioc_operational(ioc); + if (!r) + _base_reset_done_handler(ioc); + + out: + ioc_info(ioc, "%s: %s\n", __func__, r == 0 ? "SUCCESS" : "FAILED"); + + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + ioc->shost_recovery = 0; + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + ioc->ioc_reset_count++; + mutex_unlock(&ioc->reset_in_progress_mutex); + mpt3sas_base_resume_mq_polling(ioc); + + out_unlocked: + if ((r == 0) && is_trigger) { + if (is_fault) + mpt3sas_trigger_master(ioc, MASTER_TRIGGER_FW_FAULT); + else + mpt3sas_trigger_master(ioc, + MASTER_TRIGGER_ADAPTER_RESET); + } + dtmprintk(ioc, ioc_info(ioc, "%s: exit\n", __func__)); + return r; +} |