diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_base.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 9130 |
1 files changed, 9130 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c new file mode 100644 index 000000000..37208bc08 --- /dev/null +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -0,0 +1,9130 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Linux MegaRAID driver for SAS based RAID controllers + * + * Copyright (c) 2003-2013 LSI Corporation + * Copyright (c) 2013-2016 Avago Technologies + * Copyright (c) 2016-2018 Broadcom Inc. + * + * Authors: Broadcom Inc. + * Sreenivas Bagalkote + * Sumant Patro + * Bo Yang + * Adam Radford + * Kashyap Desai <kashyap.desai@broadcom.com> + * Sumit Saxena <sumit.saxena@broadcom.com> + * + * Send feedback to: megaraidlinux.pdl@broadcom.com + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/list.h> +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/uio.h> +#include <linux/slab.h> +#include <linux/uaccess.h> +#include <asm/unaligned.h> +#include <linux/fs.h> +#include <linux/compat.h> +#include <linux/blkdev.h> +#include <linux/mutex.h> +#include <linux/poll.h> +#include <linux/vmalloc.h> +#include <linux/irq_poll.h> +#include <linux/blk-mq-pci.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> +#include <scsi/scsi_dbg.h> +#include "megaraid_sas_fusion.h" +#include "megaraid_sas.h" + +/* + * Number of sectors per IO command + * Will be set in megasas_init_mfi if user does not provide + */ +static unsigned int max_sectors; +module_param_named(max_sectors, max_sectors, int, 0444); +MODULE_PARM_DESC(max_sectors, + "Maximum number of sectors per IO command"); + +static int msix_disable; +module_param(msix_disable, int, 0444); +MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); + +static unsigned int msix_vectors; +module_param(msix_vectors, int, 0444); +MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW"); + +static int allow_vf_ioctls; +module_param(allow_vf_ioctls, int, 0444); +MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0"); + +static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH; +module_param(throttlequeuedepth, int, 0444); +MODULE_PARM_DESC(throttlequeuedepth, + "Adapter queue depth when throttled due to I/O timeout. Default: 16"); + +unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME; +module_param(resetwaittime, int, 0444); +MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s"); + +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 rdpq_enable = 1; +module_param(rdpq_enable, int, 0444); +MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)"); + +unsigned int dual_qdepth_disable; +module_param(dual_qdepth_disable, int, 0444); +MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0"); + +static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; +module_param(scmd_timeout, int, 0444); +MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer."); + +int perf_mode = -1; +module_param(perf_mode, int, 0444); +MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t" + "0 - balanced: High iops and low latency queues are allocated &\n\t\t" + "interrupt coalescing is enabled only on high iops queues\n\t\t" + "1 - iops: High iops queues are not allocated &\n\t\t" + "interrupt coalescing is enabled on all queues\n\t\t" + "2 - latency: High iops queues are not allocated &\n\t\t" + "interrupt coalescing is disabled on all queues\n\t\t" + "default mode is 'balanced'" + ); + +int event_log_level = MFI_EVT_CLASS_CRITICAL; +module_param(event_log_level, int, 0644); +MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)"); + +unsigned int enable_sdev_max_qd; +module_param(enable_sdev_max_qd, int, 0444); +MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0"); + +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" + "It is not applicable for MFI_SERIES. &\n\t\t" + "Driver will work in latency mode. &\n\t\t" + "High iops queues are not allocated &\n\t\t" + ); + +int host_tagset_enable = 1; +module_param(host_tagset_enable, int, 0444); +MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)"); + +MODULE_LICENSE("GPL"); +MODULE_VERSION(MEGASAS_VERSION); +MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com"); +MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver"); + +int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); +static int megasas_get_pd_list(struct megasas_instance *instance); +static int megasas_ld_list_query(struct megasas_instance *instance, + u8 query_type); +static int megasas_issue_init_mfi(struct megasas_instance *instance); +static int megasas_register_aen(struct megasas_instance *instance, + u32 seq_num, u32 class_locale_word); +static void megasas_get_pd_info(struct megasas_instance *instance, + struct scsi_device *sdev); +static void +megasas_set_ld_removed_by_fw(struct megasas_instance *instance); + +/* + * PCI ID table for all supported controllers + */ +static struct pci_device_id megasas_pci_table[] = { + + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, + /* xscale IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, + /* ppc IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, + /* ppc IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, + /* gen2*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, + /* gen2*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, + /* skinny*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, + /* skinny*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, + /* xscale IOP, vega */ + {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, + /* xscale IOP */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, + /* Fusion */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)}, + /* Plasma */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, + /* Invader */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)}, + /* Fury */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)}, + /* Intruder */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)}, + /* Intruder 24 port*/ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)}, + /* VENTURA */ + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)}, + {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)}, + {} +}; + +MODULE_DEVICE_TABLE(pci, megasas_pci_table); + +static int megasas_mgmt_majorno; +struct megasas_mgmt_info megasas_mgmt_info; +static struct fasync_struct *megasas_async_queue; +static DEFINE_MUTEX(megasas_async_queue_mutex); + +static int megasas_poll_wait_aen; +static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); +static u32 support_poll_for_event; +u32 megasas_dbg_lvl; +static u32 support_device_change; +static bool support_nvme_encapsulation; +static bool support_pci_lane_margining; + +/* define lock for aen poll */ +static DEFINE_SPINLOCK(poll_aen_lock); + +extern struct dentry *megasas_debugfs_root; +extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num); + +void +megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, + u8 alt_status); +static u32 +megasas_read_fw_status_reg_gen2(struct megasas_instance *instance); +static int +megasas_adp_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *reg_set); +static irqreturn_t megasas_isr(int irq, void *devp); +static u32 +megasas_init_adapter_mfi(struct megasas_instance *instance); +u32 +megasas_build_and_issue_cmd(struct megasas_instance *instance, + struct scsi_cmnd *scmd); +static void megasas_complete_cmd_dpc(unsigned long instance_addr); +int +wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, + int seconds); +void megasas_fusion_ocr_wq(struct work_struct *work); +static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, + int initial); +static int +megasas_set_dma_mask(struct megasas_instance *instance); +static int +megasas_alloc_ctrl_mem(struct megasas_instance *instance); +static inline void +megasas_free_ctrl_mem(struct megasas_instance *instance); +static inline int +megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance); +static inline void +megasas_free_ctrl_dma_buffers(struct megasas_instance *instance); +static inline void +megasas_init_ctrl_params(struct megasas_instance *instance); + +u32 megasas_readl(struct megasas_instance *instance, + const volatile void __iomem *addr) +{ + u32 i = 0, ret_val; + /* + * Due to a HW errata in Aero controllers, reads to certain + * Fusion registers could intermittently return all zeroes. + * This behavior is transient in nature and subsequent reads will + * return valid value. As a workaround in driver, retry readl for + * up to thirty times until a non-zero value is read. + */ + if (instance->adapter_type == AERO_SERIES) { + do { + ret_val = readl(addr); + i++; + } while (ret_val == 0 && i < 30); + return ret_val; + } else { + return readl(addr); + } +} + +/** + * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs + * @instance: Adapter soft state + * @dcmd: DCMD frame inside MFI command + * @dma_addr: DMA address of buffer to be passed to FW + * @dma_len: Length of DMA buffer to be passed to FW + * @return: void + */ +void megasas_set_dma_settings(struct megasas_instance *instance, + struct megasas_dcmd_frame *dcmd, + dma_addr_t dma_addr, u32 dma_len) +{ + if (instance->consistent_mask_64bit) { + dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr); + dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len); + dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64); + + } else { + dcmd->sgl.sge32[0].phys_addr = + cpu_to_le32(lower_32_bits(dma_addr)); + dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len); + dcmd->flags = cpu_to_le16(dcmd->flags); + } +} + +static void +megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr, 0, instance->reg_set); + return; +} + +/** + * megasas_get_cmd - Get a command from the free pool + * @instance: Adapter soft state + * + * Returns a free command from the pool + */ +struct megasas_cmd *megasas_get_cmd(struct megasas_instance + *instance) +{ + unsigned long flags; + struct megasas_cmd *cmd = NULL; + + spin_lock_irqsave(&instance->mfi_pool_lock, flags); + + if (!list_empty(&instance->cmd_pool)) { + cmd = list_entry((&instance->cmd_pool)->next, + struct megasas_cmd, list); + list_del_init(&cmd->list); + } else { + dev_err(&instance->pdev->dev, "Command pool empty!\n"); + } + + spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); + return cmd; +} + +/** + * megasas_return_cmd - Return a cmd to free command pool + * @instance: Adapter soft state + * @cmd: Command packet to be returned to free command pool + */ +void +megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + unsigned long flags; + u32 blk_tags; + struct megasas_cmd_fusion *cmd_fusion; + struct fusion_context *fusion = instance->ctrl_context; + + /* This flag is used only for fusion adapter. + * Wait for Interrupt for Polled mode DCMD + */ + if (cmd->flags & DRV_DCMD_POLLED_MODE) + return; + + spin_lock_irqsave(&instance->mfi_pool_lock, flags); + + if (fusion) { + blk_tags = instance->max_scsi_cmds + cmd->index; + cmd_fusion = fusion->cmd_list[blk_tags]; + megasas_return_cmd_fusion(instance, cmd_fusion); + } + cmd->scmd = NULL; + cmd->frame_count = 0; + cmd->flags = 0; + memset(cmd->frame, 0, instance->mfi_frame_size); + cmd->frame->io.context = cpu_to_le32(cmd->index); + if (!fusion && reset_devices) + cmd->frame->hdr.cmd = MFI_CMD_INVALID; + list_add(&cmd->list, (&instance->cmd_pool)->next); + + spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); + +} + +static const char * +format_timestamp(uint32_t timestamp) +{ + static char buffer[32]; + + if ((timestamp & 0xff000000) == 0xff000000) + snprintf(buffer, sizeof(buffer), "boot + %us", timestamp & + 0x00ffffff); + else + snprintf(buffer, sizeof(buffer), "%us", timestamp); + return buffer; +} + +static const char * +format_class(int8_t class) +{ + static char buffer[6]; + + switch (class) { + case MFI_EVT_CLASS_DEBUG: + return "debug"; + case MFI_EVT_CLASS_PROGRESS: + return "progress"; + case MFI_EVT_CLASS_INFO: + return "info"; + case MFI_EVT_CLASS_WARNING: + return "WARN"; + case MFI_EVT_CLASS_CRITICAL: + return "CRIT"; + case MFI_EVT_CLASS_FATAL: + return "FATAL"; + case MFI_EVT_CLASS_DEAD: + return "DEAD"; + default: + snprintf(buffer, sizeof(buffer), "%d", class); + return buffer; + } +} + +/** + * megasas_decode_evt: Decode FW AEN event and print critical event + * for information. + * @instance: Adapter soft state + */ +static void +megasas_decode_evt(struct megasas_instance *instance) +{ + struct megasas_evt_detail *evt_detail = instance->evt_detail; + union megasas_evt_class_locale class_locale; + class_locale.word = le32_to_cpu(evt_detail->cl.word); + + if ((event_log_level < MFI_EVT_CLASS_DEBUG) || + (event_log_level > MFI_EVT_CLASS_DEAD)) { + printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n"); + event_log_level = MFI_EVT_CLASS_CRITICAL; + } + + if (class_locale.members.class >= event_log_level) + dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n", + le32_to_cpu(evt_detail->seq_num), + format_timestamp(le32_to_cpu(evt_detail->time_stamp)), + (class_locale.members.locale), + format_class(class_locale.members.class), + evt_detail->description); + + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, + "evt_detail.args.ld.target_id/index %d/%d\n", + evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index); + +} + +/* + * The following functions are defined for xscale + * (deviceid : 1064R, PERC5) controllers + */ + +/** + * megasas_enable_intr_xscale - Enables interrupts + * @instance: Adapter soft state + */ +static inline void +megasas_enable_intr_xscale(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + + regs = instance->reg_set; + writel(0, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_xscale -Disables interrupt + * @instance: Adapter soft state + */ +static inline void +megasas_disable_intr_xscale(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0x1f; + + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_xscale - returns the current FW status value + * @instance: Adapter soft state + */ +static u32 +megasas_read_fw_status_reg_xscale(struct megasas_instance *instance) +{ + return readl(&instance->reg_set->outbound_msg_0); +} +/** + * megasas_clear_intr_xscale - Check & clear interrupt + * @instance: Adapter soft state + */ +static int +megasas_clear_intr_xscale(struct megasas_instance *instance) +{ + u32 status; + u32 mfiStatus = 0; + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_OB_INTR_STATUS_MASK) + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + + /* + * Clear the interrupt by writing back the same value + */ + if (mfiStatus) + writel(status, ®s->outbound_intr_status); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_xscale - Sends command to the FW + * @instance: Adapter soft state + * @frame_phys_addr : Physical address of cmd + * @frame_count : Number of frames for the command + * @regs : MFI register set + */ +static inline void +megasas_fire_cmd_xscale(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr >> 3)|(frame_count), + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_adp_reset_xscale - For controller reset + * @instance: Adapter soft state + * @regs: MFI register set + */ +static int +megasas_adp_reset_xscale(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + u32 i; + u32 pcidata; + + writel(MFI_ADP_RESET, ®s->inbound_doorbell); + + for (i = 0; i < 3; i++) + msleep(1000); /* sleep for 3 secs */ + pcidata = 0; + pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); + dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata); + if (pcidata & 0x2) { + dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata); + pcidata &= ~0x2; + pci_write_config_dword(instance->pdev, + MFI_1068_PCSR_OFFSET, pcidata); + + for (i = 0; i < 2; i++) + msleep(1000); /* need to wait 2 secs again */ + + pcidata = 0; + pci_read_config_dword(instance->pdev, + MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); + dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata); + if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { + dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata); + pcidata = 0; + pci_write_config_dword(instance->pdev, + MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); + } + } + return 0; +} + +/** + * megasas_check_reset_xscale - For controller reset check + * @instance: Adapter soft state + * @regs: MFI register set + */ +static int +megasas_check_reset_xscale(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && + (le32_to_cpu(*instance->consumer) == + MEGASAS_ADPRESET_INPROG_SIGN)) + return 1; + return 0; +} + +static struct megasas_instance_template megasas_instance_template_xscale = { + + .fire_cmd = megasas_fire_cmd_xscale, + .enable_intr = megasas_enable_intr_xscale, + .disable_intr = megasas_disable_intr_xscale, + .clear_intr = megasas_clear_intr_xscale, + .read_fw_status_reg = megasas_read_fw_status_reg_xscale, + .adp_reset = megasas_adp_reset_xscale, + .check_reset = megasas_check_reset_xscale, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/* + * This is the end of set of functions & definitions specific + * to xscale (deviceid : 1064R, PERC5) controllers + */ + +/* + * The following functions are defined for ppc (deviceid : 0x60) + * controllers + */ + +/** + * megasas_enable_intr_ppc - Enables interrupts + * @instance: Adapter soft state + */ +static inline void +megasas_enable_intr_ppc(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + + regs = instance->reg_set; + writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); + + writel(~0x80000000, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_ppc - Disable interrupt + * @instance: Adapter soft state + */ +static inline void +megasas_disable_intr_ppc(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0xFFFFFFFF; + + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_ppc - returns the current FW status value + * @instance: Adapter soft state + */ +static u32 +megasas_read_fw_status_reg_ppc(struct megasas_instance *instance) +{ + return readl(&instance->reg_set->outbound_scratch_pad_0); +} + +/** + * megasas_clear_intr_ppc - Check & clear interrupt + * @instance: Adapter soft state + */ +static int +megasas_clear_intr_ppc(struct megasas_instance *instance) +{ + u32 status, mfiStatus = 0; + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + + if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + + /* + * Clear the interrupt by writing back the same value + */ + writel(status, ®s->outbound_doorbell_clear); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_doorbell_clear); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_ppc - Sends command to the FW + * @instance: Adapter soft state + * @frame_phys_addr: Physical address of cmd + * @frame_count: Number of frames for the command + * @regs: MFI register set + */ +static inline void +megasas_fire_cmd_ppc(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_check_reset_ppc - For controller reset check + * @instance: Adapter soft state + * @regs: MFI register set + */ +static int +megasas_check_reset_ppc(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) + return 1; + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_ppc = { + + .fire_cmd = megasas_fire_cmd_ppc, + .enable_intr = megasas_enable_intr_ppc, + .disable_intr = megasas_disable_intr_ppc, + .clear_intr = megasas_clear_intr_ppc, + .read_fw_status_reg = megasas_read_fw_status_reg_ppc, + .adp_reset = megasas_adp_reset_xscale, + .check_reset = megasas_check_reset_ppc, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/** + * megasas_enable_intr_skinny - Enables interrupts + * @instance: Adapter soft state + */ +static inline void +megasas_enable_intr_skinny(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + + regs = instance->reg_set; + writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); + + writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_skinny - Disables interrupt + * @instance: Adapter soft state + */ +static inline void +megasas_disable_intr_skinny(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0xFFFFFFFF; + + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_skinny - returns the current FW status value + * @instance: Adapter soft state + */ +static u32 +megasas_read_fw_status_reg_skinny(struct megasas_instance *instance) +{ + return readl(&instance->reg_set->outbound_scratch_pad_0); +} + +/** + * megasas_clear_intr_skinny - Check & clear interrupt + * @instance: Adapter soft state + */ +static int +megasas_clear_intr_skinny(struct megasas_instance *instance) +{ + u32 status; + u32 mfiStatus = 0; + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { + return 0; + } + + /* + * Check if it is our interrupt + */ + if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) == + MFI_STATE_FAULT) { + mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + } else + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + + /* + * Clear the interrupt by writing back the same value + */ + writel(status, ®s->outbound_intr_status); + + /* + * dummy read to flush PCI + */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_skinny - Sends command to the FW + * @instance: Adapter soft state + * @frame_phys_addr: Physical address of cmd + * @frame_count: Number of frames for the command + * @regs: MFI register set + */ +static inline void +megasas_fire_cmd_skinny(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->hba_lock, flags); + writel(upper_32_bits(frame_phys_addr), + &(regs)->inbound_high_queue_port); + writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1, + &(regs)->inbound_low_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_check_reset_skinny - For controller reset check + * @instance: Adapter soft state + * @regs: MFI register set + */ +static int +megasas_check_reset_skinny(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) + return 1; + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_skinny = { + + .fire_cmd = megasas_fire_cmd_skinny, + .enable_intr = megasas_enable_intr_skinny, + .disable_intr = megasas_disable_intr_skinny, + .clear_intr = megasas_clear_intr_skinny, + .read_fw_status_reg = megasas_read_fw_status_reg_skinny, + .adp_reset = megasas_adp_reset_gen2, + .check_reset = megasas_check_reset_skinny, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + + +/* + * The following functions are defined for gen2 (deviceid : 0x78 0x79) + * controllers + */ + +/** + * megasas_enable_intr_gen2 - Enables interrupts + * @instance: Adapter soft state + */ +static inline void +megasas_enable_intr_gen2(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + + regs = instance->reg_set; + writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); + + /* write ~0x00000005 (4 & 1) to the intr mask*/ + writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_disable_intr_gen2 - Disables interrupt + * @instance: Adapter soft state + */ +static inline void +megasas_disable_intr_gen2(struct megasas_instance *instance) +{ + struct megasas_register_set __iomem *regs; + u32 mask = 0xFFFFFFFF; + + regs = instance->reg_set; + writel(mask, ®s->outbound_intr_mask); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_mask); +} + +/** + * megasas_read_fw_status_reg_gen2 - returns the current FW status value + * @instance: Adapter soft state + */ +static u32 +megasas_read_fw_status_reg_gen2(struct megasas_instance *instance) +{ + return readl(&instance->reg_set->outbound_scratch_pad_0); +} + +/** + * megasas_clear_intr_gen2 - Check & clear interrupt + * @instance: Adapter soft state + */ +static int +megasas_clear_intr_gen2(struct megasas_instance *instance) +{ + u32 status; + u32 mfiStatus = 0; + struct megasas_register_set __iomem *regs; + regs = instance->reg_set; + + /* + * Check if it is our interrupt + */ + status = readl(®s->outbound_intr_status); + + if (status & MFI_INTR_FLAG_REPLY_MESSAGE) { + mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; + } + if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { + mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; + } + + /* + * Clear the interrupt by writing back the same value + */ + if (mfiStatus) + writel(status, ®s->outbound_doorbell_clear); + + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_status); + + return mfiStatus; +} + +/** + * megasas_fire_cmd_gen2 - Sends command to the FW + * @instance: Adapter soft state + * @frame_phys_addr: Physical address of cmd + * @frame_count: Number of frames for the command + * @regs: MFI register set + */ +static inline void +megasas_fire_cmd_gen2(struct megasas_instance *instance, + dma_addr_t frame_phys_addr, + u32 frame_count, + struct megasas_register_set __iomem *regs) +{ + unsigned long flags; + + spin_lock_irqsave(&instance->hba_lock, flags); + writel((frame_phys_addr | (frame_count<<1))|1, + &(regs)->inbound_queue_port); + spin_unlock_irqrestore(&instance->hba_lock, flags); +} + +/** + * megasas_adp_reset_gen2 - For controller reset + * @instance: Adapter soft state + * @reg_set: MFI register set + */ +static int +megasas_adp_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *reg_set) +{ + u32 retry = 0 ; + u32 HostDiag; + u32 __iomem *seq_offset = ®_set->seq_offset; + u32 __iomem *hostdiag_offset = ®_set->host_diag; + + if (instance->instancet == &megasas_instance_template_skinny) { + seq_offset = ®_set->fusion_seq_offset; + hostdiag_offset = ®_set->fusion_host_diag; + } + + writel(0, seq_offset); + writel(4, seq_offset); + writel(0xb, seq_offset); + writel(2, seq_offset); + writel(7, seq_offset); + writel(0xd, seq_offset); + + msleep(1000); + + HostDiag = (u32)readl(hostdiag_offset); + + while (!(HostDiag & DIAG_WRITE_ENABLE)) { + msleep(100); + HostDiag = (u32)readl(hostdiag_offset); + dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n", + retry, HostDiag); + + if (retry++ >= 100) + return 1; + + } + + dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); + + writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); + + ssleep(10); + + HostDiag = (u32)readl(hostdiag_offset); + while (HostDiag & DIAG_RESET_ADAPTER) { + msleep(100); + HostDiag = (u32)readl(hostdiag_offset); + dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n", + retry, HostDiag); + + if (retry++ >= 1000) + return 1; + + } + return 0; +} + +/** + * megasas_check_reset_gen2 - For controller reset check + * @instance: Adapter soft state + * @regs: MFI register set + */ +static int +megasas_check_reset_gen2(struct megasas_instance *instance, + struct megasas_register_set __iomem *regs) +{ + if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) + return 1; + + return 0; +} + +static struct megasas_instance_template megasas_instance_template_gen2 = { + + .fire_cmd = megasas_fire_cmd_gen2, + .enable_intr = megasas_enable_intr_gen2, + .disable_intr = megasas_disable_intr_gen2, + .clear_intr = megasas_clear_intr_gen2, + .read_fw_status_reg = megasas_read_fw_status_reg_gen2, + .adp_reset = megasas_adp_reset_gen2, + .check_reset = megasas_check_reset_gen2, + .service_isr = megasas_isr, + .tasklet = megasas_complete_cmd_dpc, + .init_adapter = megasas_init_adapter_mfi, + .build_and_issue_cmd = megasas_build_and_issue_cmd, + .issue_dcmd = megasas_issue_dcmd, +}; + +/* + * This is the end of set of functions & definitions + * specific to gen2 (deviceid : 0x78, 0x79) controllers + */ + +/* + * Template added for TB (Fusion) + */ +extern struct megasas_instance_template megasas_instance_template_fusion; + +/** + * megasas_issue_polled - Issues a polling command + * @instance: Adapter soft state + * @cmd: Command packet to be issued + * + * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting. + */ +int +megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + struct megasas_header *frame_hdr = &cmd->frame->hdr; + + frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS; + frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_err(&instance->pdev->dev, "Failed from %s %d\n", + __func__, __LINE__); + return DCMD_INIT; + } + + instance->instancet->issue_dcmd(instance, cmd); + + return wait_and_poll(instance, cmd, instance->requestorId ? + MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS); +} + +/** + * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds + * @instance: Adapter soft state + * @cmd: Command to be issued + * @timeout: Timeout in seconds + * + * This function waits on an event for the command to be returned from ISR. + * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs + * Used to issue ioctl commands. + */ +int +megasas_issue_blocked_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd, int timeout) +{ + int ret = 0; + cmd->cmd_status_drv = DCMD_INIT; + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_err(&instance->pdev->dev, "Failed from %s %d\n", + __func__, __LINE__); + return DCMD_INIT; + } + + instance->instancet->issue_dcmd(instance, cmd); + + if (timeout) { + ret = wait_event_timeout(instance->int_cmd_wait_q, + cmd->cmd_status_drv != DCMD_INIT, timeout * HZ); + if (!ret) { + dev_err(&instance->pdev->dev, + "DCMD(opcode: 0x%x) is timed out, func:%s\n", + cmd->frame->dcmd.opcode, __func__); + return DCMD_TIMEOUT; + } + } else + wait_event(instance->int_cmd_wait_q, + cmd->cmd_status_drv != DCMD_INIT); + + return cmd->cmd_status_drv; +} + +/** + * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd + * @instance: Adapter soft state + * @cmd_to_abort: Previously issued cmd to be aborted + * @timeout: Timeout in seconds + * + * MFI firmware can abort previously issued AEN comamnd (automatic event + * notification). The megasas_issue_blocked_abort_cmd() issues such abort + * cmd and waits for return status. + * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs + */ +static int +megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd_to_abort, int timeout) +{ + struct megasas_cmd *cmd; + struct megasas_abort_frame *abort_fr; + int ret = 0; + u32 opcode; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return -1; + + abort_fr = &cmd->frame->abort; + + /* + * Prepare and issue the abort frame + */ + abort_fr->cmd = MFI_CMD_ABORT; + abort_fr->cmd_status = MFI_STAT_INVALID_STATUS; + abort_fr->flags = cpu_to_le16(0); + abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index); + abort_fr->abort_mfi_phys_addr_lo = + cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr)); + abort_fr->abort_mfi_phys_addr_hi = + cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr)); + + cmd->sync_cmd = 1; + cmd->cmd_status_drv = DCMD_INIT; + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_err(&instance->pdev->dev, "Failed from %s %d\n", + __func__, __LINE__); + return DCMD_INIT; + } + + instance->instancet->issue_dcmd(instance, cmd); + + if (timeout) { + ret = wait_event_timeout(instance->abort_cmd_wait_q, + cmd->cmd_status_drv != DCMD_INIT, timeout * HZ); + if (!ret) { + opcode = cmd_to_abort->frame->dcmd.opcode; + dev_err(&instance->pdev->dev, + "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n", + opcode, __func__); + return DCMD_TIMEOUT; + } + } else + wait_event(instance->abort_cmd_wait_q, + cmd->cmd_status_drv != DCMD_INIT); + + cmd->sync_cmd = 0; + + megasas_return_cmd(instance, cmd); + return cmd->cmd_status_drv; +} + +/** + * megasas_make_sgl32 - Prepares 32-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, + union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl)); + mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl)); + } + } + return sge_count; +} + +/** + * megasas_make_sgl64 - Prepares 64-bit SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, + union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl)); + mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl)); + } + } + return sge_count; +} + +/** + * megasas_make_sgl_skinny - Prepares IEEE SGL + * @instance: Adapter soft state + * @scp: SCSI command from the mid-layer + * @mfi_sgl: SGL to be filled in + * + * If successful, this function returns the number of SG elements. Otherwise, + * it returnes -1. + */ +static int +megasas_make_sgl_skinny(struct megasas_instance *instance, + struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) +{ + int i; + int sge_count; + struct scatterlist *os_sgl; + + sge_count = scsi_dma_map(scp); + + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge_skinny[i].length = + cpu_to_le32(sg_dma_len(os_sgl)); + mfi_sgl->sge_skinny[i].phys_addr = + cpu_to_le64(sg_dma_address(os_sgl)); + mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0); + } + } + return sge_count; +} + + /** + * megasas_get_frame_count - Computes the number of frames + * @frame_type : type of frame- io or pthru frame + * @sge_count : number of sg elements + * + * Returns the number of frames required for numnber of sge's (sge_count) + */ + +static u32 megasas_get_frame_count(struct megasas_instance *instance, + u8 sge_count, u8 frame_type) +{ + int num_cnt; + int sge_bytes; + u32 sge_sz; + u32 frame_count = 0; + + sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : + sizeof(struct megasas_sge32); + + if (instance->flag_ieee) { + sge_sz = sizeof(struct megasas_sge_skinny); + } + + /* + * Main frame can contain 2 SGEs for 64-bit SGLs and + * 3 SGEs for 32-bit SGLs for ldio & + * 1 SGEs for 64-bit SGLs and + * 2 SGEs for 32-bit SGLs for pthru frame + */ + if (unlikely(frame_type == PTHRU_FRAME)) { + if (instance->flag_ieee == 1) { + num_cnt = sge_count - 1; + } else if (IS_DMA64) + num_cnt = sge_count - 1; + else + num_cnt = sge_count - 2; + } else { + if (instance->flag_ieee == 1) { + num_cnt = sge_count - 1; + } else if (IS_DMA64) + num_cnt = sge_count - 2; + else + num_cnt = sge_count - 3; + } + + if (num_cnt > 0) { + sge_bytes = sge_sz * num_cnt; + + frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + + ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; + } + /* Main frame */ + frame_count += 1; + + if (frame_count > 7) + frame_count = 8; + return frame_count; +} + +/** + * megasas_build_dcdb - Prepares a direct cdb (DCDB) command + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared in + * + * This function prepares CDB commands. These are typcially pass-through + * commands to the devices. + */ +static int +megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, + struct megasas_cmd *cmd) +{ + u32 is_logical; + u32 device_id; + u16 flags = 0; + struct megasas_pthru_frame *pthru; + + is_logical = MEGASAS_IS_LOGICAL(scp->device); + device_id = MEGASAS_DEV_INDEX(scp); + pthru = (struct megasas_pthru_frame *)cmd->frame; + + if (scp->sc_data_direction == DMA_TO_DEVICE) + flags = MFI_FRAME_DIR_WRITE; + else if (scp->sc_data_direction == DMA_FROM_DEVICE) + flags = MFI_FRAME_DIR_READ; + else if (scp->sc_data_direction == DMA_NONE) + flags = MFI_FRAME_DIR_NONE; + + if (instance->flag_ieee == 1) { + flags |= MFI_FRAME_IEEE; + } + + /* + * Prepare the DCDB frame + */ + pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; + pthru->cmd_status = 0x0; + pthru->scsi_status = 0x0; + pthru->target_id = device_id; + pthru->lun = scp->device->lun; + pthru->cdb_len = scp->cmd_len; + pthru->timeout = 0; + pthru->pad_0 = 0; + pthru->flags = cpu_to_le16(flags); + pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp)); + + memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); + + /* + * If the command is for the tape device, set the + * pthru timeout to the os layer timeout value. + */ + if (scp->device->type == TYPE_TAPE) { + if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF) + pthru->timeout = cpu_to_le16(0xFFFF); + else + pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ); + } + + /* + * Construct SGL + */ + if (instance->flag_ieee == 1) { + pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); + pthru->sge_count = megasas_make_sgl_skinny(instance, scp, + &pthru->sgl); + } else if (IS_DMA64) { + pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64); + pthru->sge_count = megasas_make_sgl64(instance, scp, + &pthru->sgl); + } else + pthru->sge_count = megasas_make_sgl32(instance, scp, + &pthru->sgl); + + if (pthru->sge_count > instance->max_num_sge) { + dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n", + pthru->sge_count); + return 0; + } + + /* + * Sense info specific + */ + pthru->sense_len = SCSI_SENSE_BUFFERSIZE; + pthru->sense_buf_phys_addr_hi = + cpu_to_le32(upper_32_bits(cmd->sense_phys_addr)); + pthru->sense_buf_phys_addr_lo = + cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); + + /* + * Compute the total number of frames this command consumes. FW uses + * this number to pull sufficient number of frames from host memory. + */ + cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, + PTHRU_FRAME); + + return cmd->frame_count; +} + +/** + * megasas_build_ldio - Prepares IOs to logical devices + * @instance: Adapter soft state + * @scp: SCSI command + * @cmd: Command to be prepared + * + * Frames (and accompanying SGLs) for regular SCSI IOs use this function. + */ +static int +megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, + struct megasas_cmd *cmd) +{ + u32 device_id; + u8 sc = scp->cmnd[0]; + u16 flags = 0; + struct megasas_io_frame *ldio; + + device_id = MEGASAS_DEV_INDEX(scp); + ldio = (struct megasas_io_frame *)cmd->frame; + + if (scp->sc_data_direction == DMA_TO_DEVICE) + flags = MFI_FRAME_DIR_WRITE; + else if (scp->sc_data_direction == DMA_FROM_DEVICE) + flags = MFI_FRAME_DIR_READ; + + if (instance->flag_ieee == 1) { + flags |= MFI_FRAME_IEEE; + } + + /* + * Prepare the Logical IO frame: 2nd bit is zero for all read cmds + */ + ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; + ldio->cmd_status = 0x0; + ldio->scsi_status = 0x0; + ldio->target_id = device_id; + ldio->timeout = 0; + ldio->reserved_0 = 0; + ldio->pad_0 = 0; + ldio->flags = cpu_to_le16(flags); + ldio->start_lba_hi = 0; + ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; + + /* + * 6-byte READ(0x08) or WRITE(0x0A) cdb + */ + if (scp->cmd_len == 6) { + ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]); + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) | + ((u32) scp->cmnd[2] << 8) | + (u32) scp->cmnd[3]); + + ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF); + } + + /* + * 10-byte READ(0x28) or WRITE(0x2A) cdb + */ + else if (scp->cmd_len == 10) { + ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] | + ((u32) scp->cmnd[7] << 8)); + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | + (u32) scp->cmnd[5]); + } + + /* + * 12-byte READ(0xA8) or WRITE(0xAA) cdb + */ + else if (scp->cmd_len == 12) { + ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | + (u32) scp->cmnd[9]); + + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | + (u32) scp->cmnd[5]); + } + + /* + * 16-byte READ(0x88) or WRITE(0x8A) cdb + */ + else if (scp->cmd_len == 16) { + ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) | + ((u32) scp->cmnd[11] << 16) | + ((u32) scp->cmnd[12] << 8) | + (u32) scp->cmnd[13]); + + ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) | + ((u32) scp->cmnd[7] << 16) | + ((u32) scp->cmnd[8] << 8) | + (u32) scp->cmnd[9]); + + ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) | + ((u32) scp->cmnd[3] << 16) | + ((u32) scp->cmnd[4] << 8) | + (u32) scp->cmnd[5]); + + } + + /* + * Construct SGL + */ + if (instance->flag_ieee) { + ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); + ldio->sge_count = megasas_make_sgl_skinny(instance, scp, + &ldio->sgl); + } else if (IS_DMA64) { + ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64); + ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); + } else + ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); + + if (ldio->sge_count > instance->max_num_sge) { + dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n", + ldio->sge_count); + return 0; + } + + /* + * Sense info specific + */ + ldio->sense_len = SCSI_SENSE_BUFFERSIZE; + ldio->sense_buf_phys_addr_hi = 0; + ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr); + + /* + * Compute the total number of frames this command consumes. FW uses + * this number to pull sufficient number of frames from host memory. + */ + cmd->frame_count = megasas_get_frame_count(instance, + ldio->sge_count, IO_FRAME); + + return cmd->frame_count; +} + +/** + * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD + * and whether it's RW or non RW + * @cmd: SCSI command + * + */ +inline int megasas_cmd_type(struct scsi_cmnd *cmd) +{ + int ret; + + switch (cmd->cmnd[0]) { + case READ_10: + case WRITE_10: + case READ_12: + case WRITE_12: + case READ_6: + case WRITE_6: + case READ_16: + case WRITE_16: + ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? + READ_WRITE_LDIO : READ_WRITE_SYSPDIO; + break; + default: + ret = (MEGASAS_IS_LOGICAL(cmd->device)) ? + NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO; + } + return ret; +} + + /** + * megasas_dump_pending_frames - Dumps the frame address of all pending cmds + * in FW + * @instance: Adapter soft state + */ +static inline void +megasas_dump_pending_frames(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + int i,n; + union megasas_sgl *mfi_sgl; + struct megasas_io_frame *ldio; + struct megasas_pthru_frame *pthru; + u32 sgcount; + u16 max_cmd = instance->max_fw_cmds; + + dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); + dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); + if (IS_DMA64) + dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); + else + dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); + + dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no); + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + if (!cmd->scmd) + continue; + dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); + if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) { + ldio = (struct megasas_io_frame *)cmd->frame; + mfi_sgl = &ldio->sgl; + sgcount = ldio->sge_count; + dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x," + " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", + instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id, + le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi), + le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount); + } else { + pthru = (struct megasas_pthru_frame *) cmd->frame; + mfi_sgl = &pthru->sgl; + sgcount = pthru->sge_count; + dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, " + "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n", + instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id, + pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len), + le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount); + } + if (megasas_dbg_lvl & MEGASAS_DBG_LVL) { + for (n = 0; n < sgcount; n++) { + if (IS_DMA64) + dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n", + le32_to_cpu(mfi_sgl->sge64[n].length), + le64_to_cpu(mfi_sgl->sge64[n].phys_addr)); + else + dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n", + le32_to_cpu(mfi_sgl->sge32[n].length), + le32_to_cpu(mfi_sgl->sge32[n].phys_addr)); + } + } + } /*for max_cmd*/ + dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + if (cmd->sync_cmd == 1) + dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); + } + dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no); +} + +u32 +megasas_build_and_issue_cmd(struct megasas_instance *instance, + struct scsi_cmnd *scmd) +{ + struct megasas_cmd *cmd; + u32 frame_count; + + cmd = megasas_get_cmd(instance); + if (!cmd) + return SCSI_MLQUEUE_HOST_BUSY; + + /* + * Logical drive command + */ + if (megasas_cmd_type(scmd) == READ_WRITE_LDIO) + frame_count = megasas_build_ldio(instance, scmd, cmd); + else + frame_count = megasas_build_dcdb(instance, scmd, cmd); + + if (!frame_count) + goto out_return_cmd; + + cmd->scmd = scmd; + megasas_priv(scmd)->cmd_priv = cmd; + + /* + * Issue the command to the FW + */ + atomic_inc(&instance->fw_outstanding); + + instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, + cmd->frame_count-1, instance->reg_set); + + return 0; +out_return_cmd: + megasas_return_cmd(instance, cmd); + return SCSI_MLQUEUE_HOST_BUSY; +} + + +/** + * megasas_queue_command - Queue entry point + * @shost: adapter SCSI host + * @scmd: SCSI command to be queued + */ +static int +megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd) +{ + struct megasas_instance *instance; + struct MR_PRIV_DEVICE *mr_device_priv_data; + u32 ld_tgt_id; + + instance = (struct megasas_instance *) + scmd->device->host->hostdata; + + if (instance->unload == 1) { + scmd->result = DID_NO_CONNECT << 16; + scsi_done(scmd); + return 0; + } + + if (instance->issuepend_done == 0) + return SCSI_MLQUEUE_HOST_BUSY; + + + /* Check for an mpio path and adjust behavior */ + if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { + if (megasas_check_mpio_paths(instance, scmd) == + (DID_REQUEUE << 16)) { + return SCSI_MLQUEUE_HOST_BUSY; + } else { + scmd->result = DID_NO_CONNECT << 16; + scsi_done(scmd); + return 0; + } + } + + mr_device_priv_data = scmd->device->hostdata; + if (!mr_device_priv_data || + (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) { + scmd->result = DID_NO_CONNECT << 16; + scsi_done(scmd); + return 0; + } + + if (MEGASAS_IS_LOGICAL(scmd->device)) { + ld_tgt_id = MEGASAS_TARGET_ID(scmd->device); + if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) { + scmd->result = DID_NO_CONNECT << 16; + scsi_done(scmd); + return 0; + } + } + + if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) + return SCSI_MLQUEUE_HOST_BUSY; + + if (mr_device_priv_data->tm_busy) + return SCSI_MLQUEUE_DEVICE_BUSY; + + + scmd->result = 0; + + if (MEGASAS_IS_LOGICAL(scmd->device) && + (scmd->device->id >= instance->fw_supported_vd_count || + scmd->device->lun)) { + scmd->result = DID_BAD_TARGET << 16; + goto out_done; + } + + if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) && + MEGASAS_IS_LOGICAL(scmd->device) && + (!instance->fw_sync_cache_support)) { + scmd->result = DID_OK << 16; + goto out_done; + } + + return instance->instancet->build_and_issue_cmd(instance, scmd); + + out_done: + scsi_done(scmd); + return 0; +} + +static struct megasas_instance *megasas_lookup_instance(u16 host_no) +{ + int i; + + for (i = 0; i < megasas_mgmt_info.max_index; i++) { + + if ((megasas_mgmt_info.instance[i]) && + (megasas_mgmt_info.instance[i]->host->host_no == host_no)) + return megasas_mgmt_info.instance[i]; + } + + return NULL; +} + +/* +* megasas_set_dynamic_target_properties - +* Device property set by driver may not be static and it is required to be +* updated after OCR +* +* set tm_capable. +* set dma alignment (only for eedp protection enable vd). +* +* @sdev: OS provided scsi device +* +* Returns void +*/ +void megasas_set_dynamic_target_properties(struct scsi_device *sdev, + bool is_target_prop) +{ + u16 pd_index = 0, ld; + u32 device_id; + struct megasas_instance *instance; + struct fusion_context *fusion; + struct MR_PRIV_DEVICE *mr_device_priv_data; + struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; + struct MR_LD_RAID *raid; + struct MR_DRV_RAID_MAP_ALL *local_map_ptr; + + instance = megasas_lookup_instance(sdev->host->host_no); + fusion = instance->ctrl_context; + mr_device_priv_data = sdev->hostdata; + + if (!fusion || !mr_device_priv_data) + return; + + if (MEGASAS_IS_LOGICAL(sdev)) { + device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; + ld = MR_TargetIdToLdGet(device_id, local_map_ptr); + if (ld >= instance->fw_supported_vd_count) + return; + raid = MR_LdRaidGet(ld, local_map_ptr); + + if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) + blk_queue_update_dma_alignment(sdev->request_queue, 0x7); + + mr_device_priv_data->is_tm_capable = + raid->capability.tmCapable; + + if (!raid->flags.isEPD) + sdev->no_write_same = 1; + + } else if (instance->use_seqnum_jbod_fp) { + pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + pd_sync = (void *)fusion->pd_seq_sync + [(instance->pd_seq_map_id - 1) & 1]; + mr_device_priv_data->is_tm_capable = + pd_sync->seq[pd_index].capability.tmCapable; + } + + if (is_target_prop && instance->tgt_prop->reset_tmo) { + /* + * If FW provides a target reset timeout value, driver will use + * it. If not set, fallback to default values. + */ + mr_device_priv_data->target_reset_tmo = + min_t(u8, instance->max_reset_tmo, + instance->tgt_prop->reset_tmo); + mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo; + } else { + mr_device_priv_data->target_reset_tmo = + MEGASAS_DEFAULT_TM_TIMEOUT; + mr_device_priv_data->task_abort_tmo = + MEGASAS_DEFAULT_TM_TIMEOUT; + } +} + +/* + * megasas_set_nvme_device_properties - + * set nomerges=2 + * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K). + * set maximum io transfer = MDTS of NVME device provided by MR firmware. + * + * MR firmware provides value in KB. Caller of this function converts + * kb into bytes. + * + * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size, + * MR firmware provides value 128 as (32 * 4K) = 128K. + * + * @sdev: scsi device + * @max_io_size: maximum io transfer size + * + */ +static inline void +megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size) +{ + struct megasas_instance *instance; + u32 mr_nvme_pg_size; + + instance = (struct megasas_instance *)sdev->host->hostdata; + mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, + MR_DEFAULT_NVME_PAGE_SIZE); + + blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512)); + + blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue); + blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1); +} + +/* + * megasas_set_fw_assisted_qd - + * set device queue depth to can_queue + * set device queue depth to fw assisted qd + * + * @sdev: scsi device + * @is_target_prop true, if fw provided target properties. + */ +static void megasas_set_fw_assisted_qd(struct scsi_device *sdev, + bool is_target_prop) +{ + u8 interface_type; + u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN; + u32 tgt_device_qd; + struct megasas_instance *instance; + struct MR_PRIV_DEVICE *mr_device_priv_data; + + instance = megasas_lookup_instance(sdev->host->host_no); + mr_device_priv_data = sdev->hostdata; + interface_type = mr_device_priv_data->interface_type; + + switch (interface_type) { + case SAS_PD: + device_qd = MEGASAS_SAS_QD; + break; + case SATA_PD: + device_qd = MEGASAS_SATA_QD; + break; + case NVME_PD: + device_qd = MEGASAS_NVME_QD; + break; + } + + if (is_target_prop) { + tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth); + if (tgt_device_qd) + device_qd = min(instance->host->can_queue, + (int)tgt_device_qd); + } + + if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE) + device_qd = instance->host->can_queue; + + scsi_change_queue_depth(sdev, device_qd); +} + +/* + * megasas_set_static_target_properties - + * Device property set by driver are static and it is not required to be + * updated after OCR. + * + * set io timeout + * set device queue depth + * set nvme device properties. see - megasas_set_nvme_device_properties + * + * @sdev: scsi device + * @is_target_prop true, if fw provided target properties. + */ +static void megasas_set_static_target_properties(struct scsi_device *sdev, + bool is_target_prop) +{ + u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB; + struct megasas_instance *instance; + + instance = megasas_lookup_instance(sdev->host->host_no); + + /* + * The RAID firmware may require extended timeouts. + */ + blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ); + + /* max_io_size_kb will be set to non zero for + * nvme based vd and syspd. + */ + if (is_target_prop) + max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb); + + if (instance->nvme_page_size && max_io_size_kb) + megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10)); + + megasas_set_fw_assisted_qd(sdev, is_target_prop); +} + + +static int megasas_slave_configure(struct scsi_device *sdev) +{ + u16 pd_index = 0; + struct megasas_instance *instance; + int ret_target_prop = DCMD_FAILED; + bool is_target_prop = false; + + instance = megasas_lookup_instance(sdev->host->host_no); + if (instance->pd_list_not_supported) { + if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) { + pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + if (instance->pd_list[pd_index].driveState != + MR_PD_STATE_SYSTEM) + return -ENXIO; + } + } + + mutex_lock(&instance->reset_mutex); + /* Send DCMD to Firmware and cache the information */ + if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev)) + megasas_get_pd_info(instance, sdev); + + /* Some ventura firmware may not have instance->nvme_page_size set. + * Do not send MR_DCMD_DRV_GET_TARGET_PROP + */ + if ((instance->tgt_prop) && (instance->nvme_page_size)) + ret_target_prop = megasas_get_target_prop(instance, sdev); + + is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; + megasas_set_static_target_properties(sdev, is_target_prop); + + /* This sdev property may change post OCR */ + megasas_set_dynamic_target_properties(sdev, is_target_prop); + + mutex_unlock(&instance->reset_mutex); + + return 0; +} + +static int megasas_slave_alloc(struct scsi_device *sdev) +{ + u16 pd_index = 0, ld_tgt_id; + struct megasas_instance *instance ; + struct MR_PRIV_DEVICE *mr_device_priv_data; + + instance = megasas_lookup_instance(sdev->host->host_no); + if (!MEGASAS_IS_LOGICAL(sdev)) { + /* + * Open the OS scan to the SYSTEM PD + */ + pd_index = + (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + if ((instance->pd_list_not_supported || + instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM)) { + goto scan_target; + } + return -ENXIO; + } else if (!MEGASAS_IS_LUN_VALID(sdev)) { + sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__); + return -ENXIO; + } + +scan_target: + mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data), + GFP_KERNEL); + if (!mr_device_priv_data) + return -ENOMEM; + + if (MEGASAS_IS_LOGICAL(sdev)) { + ld_tgt_id = MEGASAS_TARGET_ID(sdev); + instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE; + if (megasas_dbg_lvl & LD_PD_DEBUG) + sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id); + } + + sdev->hostdata = mr_device_priv_data; + + atomic_set(&mr_device_priv_data->r1_ldio_hint, + instance->r1_ldio_hint_default); + return 0; +} + +static void megasas_slave_destroy(struct scsi_device *sdev) +{ + u16 ld_tgt_id; + struct megasas_instance *instance; + + instance = megasas_lookup_instance(sdev->host->host_no); + + if (MEGASAS_IS_LOGICAL(sdev)) { + if (!MEGASAS_IS_LUN_VALID(sdev)) { + sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__); + return; + } + ld_tgt_id = MEGASAS_TARGET_ID(sdev); + instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED; + if (megasas_dbg_lvl & LD_PD_DEBUG) + sdev_printk(KERN_INFO, sdev, + "LD target ID %d removed from OS stack\n", ld_tgt_id); + } + + kfree(sdev->hostdata); + sdev->hostdata = NULL; +} + +/* +* megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a +* kill adapter +* @instance: Adapter soft state +* +*/ +static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance) +{ + int i; + struct megasas_cmd *cmd_mfi; + struct megasas_cmd_fusion *cmd_fusion; + struct fusion_context *fusion = instance->ctrl_context; + + /* Find all outstanding ioctls */ + if (fusion) { + for (i = 0; i < instance->max_fw_cmds; i++) { + cmd_fusion = fusion->cmd_list[i]; + if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) { + cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; + if (cmd_mfi->sync_cmd && + (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) { + cmd_mfi->frame->hdr.cmd_status = + MFI_STAT_WRONG_STATE; + megasas_complete_cmd(instance, + cmd_mfi, DID_OK); + } + } + } + } else { + for (i = 0; i < instance->max_fw_cmds; i++) { + cmd_mfi = instance->cmd_list[i]; + if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd != + MFI_CMD_ABORT) + megasas_complete_cmd(instance, cmd_mfi, DID_OK); + } + } +} + + +void megaraid_sas_kill_hba(struct megasas_instance *instance) +{ + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_warn(&instance->pdev->dev, + "Adapter already dead, skipping kill HBA\n"); + return; + } + + /* Set critical error to block I/O & ioctls in case caller didn't */ + atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); + /* Wait 1 second to ensure IO or ioctls in build have posted */ + msleep(1000); + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->adapter_type != MFI_SERIES)) { + if (!instance->requestorId) { + writel(MFI_STOP_ADP, &instance->reg_set->doorbell); + /* Flush */ + readl(&instance->reg_set->doorbell); + } + if (instance->requestorId && instance->peerIsPresent) + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + } else { + writel(MFI_STOP_ADP, + &instance->reg_set->inbound_doorbell); + } + /* Complete outstanding ioctls when adapter is killed */ + megasas_complete_outstanding_ioctls(instance); +} + + /** + * megasas_check_and_restore_queue_depth - Check if queue depth needs to be + * restored to max value + * @instance: Adapter soft state + * + */ +void +megasas_check_and_restore_queue_depth(struct megasas_instance *instance) +{ + unsigned long flags; + + if (instance->flag & MEGASAS_FW_BUSY + && time_after(jiffies, instance->last_time + 5 * HZ) + && atomic_read(&instance->fw_outstanding) < + instance->throttlequeuedepth + 1) { + + spin_lock_irqsave(instance->host->host_lock, flags); + instance->flag &= ~MEGASAS_FW_BUSY; + + instance->host->can_queue = instance->cur_can_queue; + spin_unlock_irqrestore(instance->host->host_lock, flags); + } +} + +/** + * megasas_complete_cmd_dpc - Returns FW's controller structure + * @instance_addr: Address of adapter soft state + * + * Tasklet to complete cmds + */ +static void megasas_complete_cmd_dpc(unsigned long instance_addr) +{ + u32 producer; + u32 consumer; + u32 context; + struct megasas_cmd *cmd; + struct megasas_instance *instance = + (struct megasas_instance *)instance_addr; + unsigned long flags; + + /* If we have already declared adapter dead, donot complete cmds */ + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) + return; + + spin_lock_irqsave(&instance->completion_lock, flags); + + producer = le32_to_cpu(*instance->producer); + consumer = le32_to_cpu(*instance->consumer); + + while (consumer != producer) { + context = le32_to_cpu(instance->reply_queue[consumer]); + if (context >= instance->max_fw_cmds) { + dev_err(&instance->pdev->dev, "Unexpected context value %x\n", + context); + BUG(); + } + + cmd = instance->cmd_list[context]; + + megasas_complete_cmd(instance, cmd, DID_OK); + + consumer++; + if (consumer == (instance->max_fw_cmds + 1)) { + consumer = 0; + } + } + + *instance->consumer = cpu_to_le32(producer); + + spin_unlock_irqrestore(&instance->completion_lock, flags); + + /* + * Check if we can restore can_queue + */ + megasas_check_and_restore_queue_depth(instance); +} + +static void megasas_sriov_heartbeat_handler(struct timer_list *t); + +/** + * megasas_start_timer - Initializes sriov heartbeat timer object + * @instance: Adapter soft state + * + */ +void megasas_start_timer(struct megasas_instance *instance) +{ + struct timer_list *timer = &instance->sriov_heartbeat_timer; + + timer_setup(timer, megasas_sriov_heartbeat_handler, 0); + timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF; + add_timer(timer); +} + +static void +megasas_internal_reset_defer_cmds(struct megasas_instance *instance); + +static void +process_fw_state_change_wq(struct work_struct *work); + +static void megasas_do_ocr(struct megasas_instance *instance) +{ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { + *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); + } + instance->instancet->disable_intr(instance); + atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); + instance->issuepend_done = 0; + + atomic_set(&instance->fw_outstanding, 0); + megasas_internal_reset_defer_cmds(instance); + process_fw_state_change_wq(&instance->work_init); +} + +static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, + int initial) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL; + dma_addr_t new_affiliation_111_h; + int ld, retval = 0; + u8 thisVf; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:" + "Failed to get cmd for scsi%d\n", + instance->host->host_no); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + if (!instance->vf_affiliation_111) { + dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " + "affiliation for scsi%d\n", instance->host->host_no); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + if (initial) + memset(instance->vf_affiliation_111, 0, + sizeof(struct MR_LD_VF_AFFILIATION_111)); + else { + new_affiliation_111 = + dma_alloc_coherent(&instance->pdev->dev, + sizeof(struct MR_LD_VF_AFFILIATION_111), + &new_affiliation_111_h, GFP_KERNEL); + if (!new_affiliation_111) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " + "memory for new affiliation for scsi%d\n", + instance->host->host_no); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + } + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = + cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111)); + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111); + + if (initial) + dcmd->sgl.sge32[0].phys_addr = + cpu_to_le32(instance->vf_affiliation_111_h); + else + dcmd->sgl.sge32[0].phys_addr = + cpu_to_le32(new_affiliation_111_h); + + dcmd->sgl.sge32[0].length = cpu_to_le32( + sizeof(struct MR_LD_VF_AFFILIATION_111)); + + dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " + "scsi%d\n", instance->host->host_no); + + if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { + dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" + " failed with status 0x%x for scsi%d\n", + dcmd->cmd_status, instance->host->host_no); + retval = 1; /* Do a scan if we couldn't get affiliation */ + goto out; + } + + if (!initial) { + thisVf = new_affiliation_111->thisVf; + for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++) + if (instance->vf_affiliation_111->map[ld].policy[thisVf] != + new_affiliation_111->map[ld].policy[thisVf]) { + dev_warn(&instance->pdev->dev, "SR-IOV: " + "Got new LD/VF affiliation for scsi%d\n", + instance->host->host_no); + memcpy(instance->vf_affiliation_111, + new_affiliation_111, + sizeof(struct MR_LD_VF_AFFILIATION_111)); + retval = 1; + goto out; + } + } +out: + if (new_affiliation_111) { + dma_free_coherent(&instance->pdev->dev, + sizeof(struct MR_LD_VF_AFFILIATION_111), + new_affiliation_111, + new_affiliation_111_h); + } + + megasas_return_cmd(instance, cmd); + + return retval; +} + +static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, + int initial) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_VF_AFFILIATION *new_affiliation = NULL; + struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL; + dma_addr_t new_affiliation_h; + int i, j, retval = 0, found = 0, doscan = 0; + u8 thisVf; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: " + "Failed to get cmd for scsi%d\n", + instance->host->host_no); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + if (!instance->vf_affiliation) { + dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF " + "affiliation for scsi%d\n", instance->host->host_no); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + if (initial) + memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION)); + else { + new_affiliation = + dma_alloc_coherent(&instance->pdev->dev, + (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION), + &new_affiliation_h, GFP_KERNEL); + if (!new_affiliation) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate " + "memory for new affiliation for scsi%d\n", + instance->host->host_no); + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + } + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION)); + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS); + + if (initial) + dcmd->sgl.sge32[0].phys_addr = + cpu_to_le32(instance->vf_affiliation_h); + else + dcmd->sgl.sge32[0].phys_addr = + cpu_to_le32(new_affiliation_h); + + dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION)); + + dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for " + "scsi%d\n", instance->host->host_no); + + + if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) { + dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD" + " failed with status 0x%x for scsi%d\n", + dcmd->cmd_status, instance->host->host_no); + retval = 1; /* Do a scan if we couldn't get affiliation */ + goto out; + } + + if (!initial) { + if (!new_affiliation->ldCount) { + dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " + "affiliation for passive path for scsi%d\n", + instance->host->host_no); + retval = 1; + goto out; + } + newmap = new_affiliation->map; + savedmap = instance->vf_affiliation->map; + thisVf = new_affiliation->thisVf; + for (i = 0 ; i < new_affiliation->ldCount; i++) { + found = 0; + for (j = 0; j < instance->vf_affiliation->ldCount; + j++) { + if (newmap->ref.targetId == + savedmap->ref.targetId) { + found = 1; + if (newmap->policy[thisVf] != + savedmap->policy[thisVf]) { + doscan = 1; + goto out; + } + } + savedmap = (struct MR_LD_VF_MAP *) + ((unsigned char *)savedmap + + savedmap->size); + } + if (!found && newmap->policy[thisVf] != + MR_LD_ACCESS_HIDDEN) { + doscan = 1; + goto out; + } + newmap = (struct MR_LD_VF_MAP *) + ((unsigned char *)newmap + newmap->size); + } + + newmap = new_affiliation->map; + savedmap = instance->vf_affiliation->map; + + for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) { + found = 0; + for (j = 0 ; j < new_affiliation->ldCount; j++) { + if (savedmap->ref.targetId == + newmap->ref.targetId) { + found = 1; + if (savedmap->policy[thisVf] != + newmap->policy[thisVf]) { + doscan = 1; + goto out; + } + } + newmap = (struct MR_LD_VF_MAP *) + ((unsigned char *)newmap + + newmap->size); + } + if (!found && savedmap->policy[thisVf] != + MR_LD_ACCESS_HIDDEN) { + doscan = 1; + goto out; + } + savedmap = (struct MR_LD_VF_MAP *) + ((unsigned char *)savedmap + + savedmap->size); + } + } +out: + if (doscan) { + dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF " + "affiliation for scsi%d\n", instance->host->host_no); + memcpy(instance->vf_affiliation, new_affiliation, + new_affiliation->size); + retval = 1; + } + + if (new_affiliation) + dma_free_coherent(&instance->pdev->dev, + (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION), + new_affiliation, new_affiliation_h); + megasas_return_cmd(instance, cmd); + + return retval; +} + +/* This function will get the current SR-IOV LD/VF affiliation */ +static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance, + int initial) +{ + int retval; + + if (instance->PlasmaFW111) + retval = megasas_get_ld_vf_affiliation_111(instance, initial); + else + retval = megasas_get_ld_vf_affiliation_12(instance, initial); + return retval; +} + +/* This function will tell FW to start the SR-IOV heartbeat */ +int megasas_sriov_start_heartbeat(struct megasas_instance *instance, + int initial) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + int retval = 0; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: " + "Failed to get cmd for scsi%d\n", + instance->host->host_no); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + if (initial) { + instance->hb_host_mem = + dma_alloc_coherent(&instance->pdev->dev, + sizeof(struct MR_CTRL_HB_HOST_MEM), + &instance->hb_host_mem_h, + GFP_KERNEL); + if (!instance->hb_host_mem) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate" + " memory for heartbeat host memory for scsi%d\n", + instance->host->host_no); + retval = -ENOMEM; + goto out; + } + } + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM)); + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC); + + megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h, + sizeof(struct MR_CTRL_HB_HOST_MEM)); + + dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n", + instance->host->host_no); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) + retval = megasas_issue_blocked_cmd(instance, cmd, + MEGASAS_ROUTINE_WAIT_TIME_VF); + else + retval = megasas_issue_polled(instance, cmd); + + if (retval) { + dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST" + "_MEM_ALLOC DCMD %s for scsi%d\n", + (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ? + "timed out" : "failed", instance->host->host_no); + retval = 1; + } + +out: + megasas_return_cmd(instance, cmd); + + return retval; +} + +/* Handler for SR-IOV heartbeat */ +static void megasas_sriov_heartbeat_handler(struct timer_list *t) +{ + struct megasas_instance *instance = + from_timer(instance, t, sriov_heartbeat_timer); + + if (instance->hb_host_mem->HB.fwCounter != + instance->hb_host_mem->HB.driverCounter) { + instance->hb_host_mem->HB.driverCounter = + instance->hb_host_mem->HB.fwCounter; + mod_timer(&instance->sriov_heartbeat_timer, + jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF); + } else { + dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never " + "completed for scsi%d\n", instance->host->host_no); + schedule_work(&instance->work_init); + } +} + +/** + * megasas_wait_for_outstanding - Wait for all outstanding cmds + * @instance: Adapter soft state + * + * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to + * complete all its outstanding commands. Returns error if one or more IOs + * are pending after this time period. It also marks the controller dead. + */ +static int megasas_wait_for_outstanding(struct megasas_instance *instance) +{ + int i, sl, outstanding; + u32 reset_index; + u32 wait_time = MEGASAS_RESET_WAIT_TIME; + unsigned long flags; + struct list_head clist_local; + struct megasas_cmd *reset_cmd; + u32 fw_state; + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n", + __func__, __LINE__); + return FAILED; + } + + if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { + + INIT_LIST_HEAD(&clist_local); + spin_lock_irqsave(&instance->hba_lock, flags); + list_splice_init(&instance->internal_reset_pending_q, + &clist_local); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + dev_notice(&instance->pdev->dev, "HBA reset wait ...\n"); + for (i = 0; i < wait_time; i++) { + msleep(1000); + if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) + break; + } + + if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { + dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n"); + atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR); + return FAILED; + } + + reset_index = 0; + while (!list_empty(&clist_local)) { + reset_cmd = list_entry((&clist_local)->next, + struct megasas_cmd, list); + list_del_init(&reset_cmd->list); + if (reset_cmd->scmd) { + reset_cmd->scmd->result = DID_REQUEUE << 16; + dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n", + reset_index, reset_cmd, + reset_cmd->scmd->cmnd[0]); + + scsi_done(reset_cmd->scmd); + megasas_return_cmd(instance, reset_cmd); + } else if (reset_cmd->sync_cmd) { + dev_notice(&instance->pdev->dev, "%p synch cmds" + "reset queue\n", + reset_cmd); + + reset_cmd->cmd_status_drv = DCMD_INIT; + instance->instancet->fire_cmd(instance, + reset_cmd->frame_phys_addr, + 0, instance->reg_set); + } else { + dev_notice(&instance->pdev->dev, "%p unexpected" + "cmds lst\n", + reset_cmd); + } + reset_index++; + } + + return SUCCESS; + } + + for (i = 0; i < resetwaittime; i++) { + outstanding = atomic_read(&instance->fw_outstanding); + + if (!outstanding) + break; + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { + dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " + "commands to complete\n",i,outstanding); + /* + * Call cmd completion routine. Cmd to be + * be completed directly without depending on isr. + */ + megasas_complete_cmd_dpc((unsigned long)instance); + } + + msleep(1000); + } + + i = 0; + outstanding = atomic_read(&instance->fw_outstanding); + fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; + + if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) + goto no_outstanding; + + if (instance->disableOnlineCtrlReset) + goto kill_hba_and_failed; + do { + if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) { + dev_info(&instance->pdev->dev, + "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n", + __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding)); + if (i == 3) + goto kill_hba_and_failed; + megasas_do_ocr(instance); + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n", + __func__, __LINE__); + return FAILED; + } + dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n", + __func__, __LINE__); + + for (sl = 0; sl < 10; sl++) + msleep(500); + + outstanding = atomic_read(&instance->fw_outstanding); + + fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK; + if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL))) + goto no_outstanding; + } + i++; + } while (i <= 3); + +no_outstanding: + + dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n", + __func__, __LINE__); + return SUCCESS; + +kill_hba_and_failed: + + /* Reset not supported, kill adapter */ + dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d" + " disableOnlineCtrlReset %d fw_outstanding %d \n", + __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset, + atomic_read(&instance->fw_outstanding)); + megasas_dump_pending_frames(instance); + megaraid_sas_kill_hba(instance); + + return FAILED; +} + +/** + * megasas_generic_reset - Generic reset routine + * @scmd: Mid-layer SCSI command + * + * This routine implements a generic reset handler for device, bus and host + * reset requests. Device, bus and host specific reset handlers can use this + * function after they do their specific tasks. + */ +static int megasas_generic_reset(struct scsi_cmnd *scmd) +{ + int ret_val; + struct megasas_instance *instance; + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", + scmd->cmnd[0], scmd->retries); + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n"); + return FAILED; + } + + ret_val = megasas_wait_for_outstanding(instance); + if (ret_val == SUCCESS) + dev_notice(&instance->pdev->dev, "reset successful\n"); + else + dev_err(&instance->pdev->dev, "failed to do reset\n"); + + return ret_val; +} + +/** + * megasas_reset_timer - quiesce the adapter if required + * @scmd: scsi cmnd + * + * Sets the FW busy flag and reduces the host->can_queue if the + * cmd has not been completed within the timeout period. + */ +static enum +blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) +{ + struct megasas_instance *instance; + unsigned long flags; + + if (time_after(jiffies, scmd->jiffies_at_alloc + + (scmd_timeout * 2) * HZ)) { + return BLK_EH_DONE; + } + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + if (!(instance->flag & MEGASAS_FW_BUSY)) { + /* FW is busy, throttle IO */ + spin_lock_irqsave(instance->host->host_lock, flags); + + instance->host->can_queue = instance->throttlequeuedepth; + instance->last_time = jiffies; + instance->flag |= MEGASAS_FW_BUSY; + + spin_unlock_irqrestore(instance->host->host_lock, flags); + } + return BLK_EH_RESET_TIMER; +} + +/** + * megasas_dump - This function will print hexdump of provided buffer. + * @buf: Buffer to be dumped + * @sz: Size in bytes + * @format: Different formats of dumping e.g. format=n will + * cause only 'n' 32 bit words to be dumped in a single + * line. + */ +inline void +megasas_dump(void *buf, int sz, int format) +{ + int i; + __le32 *buf_loc = (__le32 *)buf; + + for (i = 0; i < (sz / sizeof(__le32)); i++) { + if ((i % format) == 0) { + if (i != 0) + printk(KERN_CONT "\n"); + printk(KERN_CONT "%08x: ", (i * 4)); + } + printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i])); + } + printk(KERN_CONT "\n"); +} + +/** + * megasas_dump_reg_set - This function will print hexdump of register set + * @reg_set: Register set to be dumped + */ +inline void +megasas_dump_reg_set(void __iomem *reg_set) +{ + unsigned int i, sz = 256; + u32 __iomem *reg = (u32 __iomem *)reg_set; + + for (i = 0; i < (sz / sizeof(u32)); i++) + printk("%08x: %08x\n", (i * 4), readl(®[i])); +} + +/** + * megasas_dump_fusion_io - This function will print key details + * of SCSI IO + * @scmd: SCSI command pointer of SCSI IO + */ +void +megasas_dump_fusion_io(struct scsi_cmnd *scmd) +{ + struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv; + union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; + struct megasas_instance *instance; + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + scmd_printk(KERN_INFO, scmd, + "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n", + scmd, scmd->retries, scmd->allowed); + scsi_print_command(scmd); + + if (cmd) { + req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; + scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n"); + scmd_printk(KERN_INFO, scmd, + "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n", + req_desc->SCSIIO.RequestFlags, + req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID, + req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle); + + printk(KERN_INFO "IO request frame:\n"); + megasas_dump(cmd->io_request, + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8); + printk(KERN_INFO "Chain frame:\n"); + megasas_dump(cmd->sg_frame, + instance->max_chain_frame_sz, 8); + } + +} + +/* + * megasas_dump_sys_regs - This function will dump system registers through + * sysfs. + * @reg_set: Pointer to System register set. + * @buf: Buffer to which output is to be written. + * @return: Number of bytes written to buffer. + */ +static inline ssize_t +megasas_dump_sys_regs(void __iomem *reg_set, char *buf) +{ + unsigned int i, sz = 256; + int bytes_wrote = 0; + char *loc = (char *)buf; + u32 __iomem *reg = (u32 __iomem *)reg_set; + + for (i = 0; i < sz / sizeof(u32); i++) { + bytes_wrote += scnprintf(loc + bytes_wrote, + PAGE_SIZE - bytes_wrote, + "%08x: %08x\n", (i * 4), + readl(®[i])); + } + return bytes_wrote; +} + +/** + * megasas_reset_bus_host - Bus & host reset handler entry point + * @scmd: Mid-layer SCSI command + */ +static int megasas_reset_bus_host(struct scsi_cmnd *scmd) +{ + int ret; + struct megasas_instance *instance; + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + scmd_printk(KERN_INFO, scmd, + "OCR is requested due to IO timeout!!\n"); + + scmd_printk(KERN_INFO, scmd, + "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n", + scmd->device->host->shost_state, + scsi_host_busy(scmd->device->host), + atomic_read(&instance->fw_outstanding)); + /* + * First wait for all commands to complete + */ + if (instance->adapter_type == MFI_SERIES) { + ret = megasas_generic_reset(scmd); + } else { + megasas_dump_fusion_io(scmd); + ret = megasas_reset_fusion(scmd->device->host, + SCSIIO_TIMEOUT_OCR); + } + + return ret; +} + +/** + * megasas_task_abort - Issues task abort request to firmware + * (supported only for fusion adapters) + * @scmd: SCSI command pointer + */ +static int megasas_task_abort(struct scsi_cmnd *scmd) +{ + int ret; + struct megasas_instance *instance; + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + if (instance->adapter_type != MFI_SERIES) + ret = megasas_task_abort_fusion(scmd); + else { + sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n"); + ret = FAILED; + } + + return ret; +} + +/** + * megasas_reset_target: Issues target reset request to firmware + * (supported only for fusion adapters) + * @scmd: SCSI command pointer + */ +static int megasas_reset_target(struct scsi_cmnd *scmd) +{ + int ret; + struct megasas_instance *instance; + + instance = (struct megasas_instance *)scmd->device->host->hostdata; + + if (instance->adapter_type != MFI_SERIES) + ret = megasas_reset_target_fusion(scmd); + else { + sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n"); + ret = FAILED; + } + + return ret; +} + +/** + * megasas_bios_param - Returns disk geometry for a disk + * @sdev: device handle + * @bdev: block device + * @capacity: drive capacity + * @geom: geometry parameters + */ +static int +megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, + sector_t capacity, int geom[]) +{ + int heads; + int sectors; + sector_t cylinders; + unsigned long tmp; + + /* Default heads (64) & sectors (32) */ + heads = 64; + sectors = 32; + + tmp = heads * sectors; + cylinders = capacity; + + sector_div(cylinders, tmp); + + /* + * Handle extended translation size for logical drives > 1Gb + */ + + if (capacity >= 0x200000) { + heads = 255; + sectors = 63; + tmp = heads*sectors; + cylinders = capacity; + sector_div(cylinders, tmp); + } + + geom[0] = heads; + geom[1] = sectors; + geom[2] = cylinders; + + return 0; +} + +static void megasas_map_queues(struct Scsi_Host *shost) +{ + struct megasas_instance *instance; + int qoff = 0, offset; + struct blk_mq_queue_map *map; + + instance = (struct megasas_instance *)shost->hostdata; + + if (shost->nr_hw_queues == 1) + return; + + offset = instance->low_latency_index_start; + + /* Setup Default hctx */ + map = &shost->tag_set.map[HCTX_TYPE_DEFAULT]; + map->nr_queues = instance->msix_vectors - offset; + map->queue_offset = 0; + blk_mq_pci_map_queues(map, instance->pdev, offset); + qoff += map->nr_queues; + offset += map->nr_queues; + + /* we never use READ queue, so can't cheat blk-mq */ + shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0; + + /* Setup Poll hctx */ + map = &shost->tag_set.map[HCTX_TYPE_POLL]; + map->nr_queues = instance->iopoll_q_count; + if (map->nr_queues) { + /* + * The poll queue(s) doesn't have an IRQ (and hence IRQ + * affinity), so use the regular blk-mq cpu mapping + */ + map->queue_offset = qoff; + blk_mq_map_queues(map); + } +} + +static void megasas_aen_polling(struct work_struct *work); + +/** + * megasas_service_aen - Processes an event notification + * @instance: Adapter soft state + * @cmd: AEN command completed by the ISR + * + * For AEN, driver sends a command down to FW that is held by the FW till an + * event occurs. When an event of interest occurs, FW completes the command + * that it was previously holding. + * + * This routines sends SIGIO signal to processes that have registered with the + * driver for AEN. + */ +static void +megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) +{ + unsigned long flags; + + /* + * Don't signal app if it is just an aborted previously registered aen + */ + if ((!cmd->abort_aen) && (instance->unload == 0)) { + spin_lock_irqsave(&poll_aen_lock, flags); + megasas_poll_wait_aen = 1; + spin_unlock_irqrestore(&poll_aen_lock, flags); + wake_up(&megasas_poll_wait); + kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); + } + else + cmd->abort_aen = 0; + + instance->aen_cmd = NULL; + + megasas_return_cmd(instance, cmd); + + if ((instance->unload == 0) && + ((instance->issuepend_done == 1))) { + struct megasas_aen_event *ev; + + ev = kzalloc(sizeof(*ev), GFP_ATOMIC); + if (!ev) { + dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n"); + } else { + ev->instance = instance; + instance->ev = ev; + INIT_DELAYED_WORK(&ev->hotplug_work, + megasas_aen_polling); + schedule_delayed_work(&ev->hotplug_work, 0); + } + } +} + +static ssize_t +fw_crash_buffer_store(struct device *cdev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = + (struct megasas_instance *) shost->hostdata; + int val = 0; + + if (kstrtoint(buf, 0, &val) != 0) + return -EINVAL; + + mutex_lock(&instance->crashdump_lock); + instance->fw_crash_buffer_offset = val; + mutex_unlock(&instance->crashdump_lock); + return strlen(buf); +} + +static ssize_t +fw_crash_buffer_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = + (struct megasas_instance *) shost->hostdata; + u32 size; + unsigned long dmachunk = CRASH_DMA_BUF_SIZE; + unsigned long chunk_left_bytes; + unsigned long src_addr; + u32 buff_offset; + + mutex_lock(&instance->crashdump_lock); + buff_offset = instance->fw_crash_buffer_offset; + if (!instance->crash_dump_buf || + !((instance->fw_crash_state == AVAILABLE) || + (instance->fw_crash_state == COPYING))) { + dev_err(&instance->pdev->dev, + "Firmware crash dump is not available\n"); + mutex_unlock(&instance->crashdump_lock); + return -EINVAL; + } + + if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) { + dev_err(&instance->pdev->dev, + "Firmware crash dump offset is out of range\n"); + mutex_unlock(&instance->crashdump_lock); + return 0; + } + + size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset; + chunk_left_bytes = dmachunk - (buff_offset % dmachunk); + size = (size > chunk_left_bytes) ? chunk_left_bytes : size; + size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; + + src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] + + (buff_offset % dmachunk); + memcpy(buf, (void *)src_addr, size); + mutex_unlock(&instance->crashdump_lock); + + return size; +} + +static ssize_t +fw_crash_buffer_size_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = + (struct megasas_instance *) shost->hostdata; + + return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long) + ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE); +} + +static ssize_t +fw_crash_state_store(struct device *cdev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = + (struct megasas_instance *) shost->hostdata; + int val = 0; + + if (kstrtoint(buf, 0, &val) != 0) + return -EINVAL; + + if ((val <= AVAILABLE || val > COPY_ERROR)) { + dev_err(&instance->pdev->dev, "application updates invalid " + "firmware crash state\n"); + return -EINVAL; + } + + instance->fw_crash_state = val; + + if ((val == COPIED) || (val == COPY_ERROR)) { + mutex_lock(&instance->crashdump_lock); + megasas_free_host_crash_buffer(instance); + mutex_unlock(&instance->crashdump_lock); + if (val == COPY_ERROR) + dev_info(&instance->pdev->dev, "application failed to " + "copy Firmware crash dump\n"); + else + dev_info(&instance->pdev->dev, "Firmware crash dump " + "copied successfully\n"); + } + return strlen(buf); +} + +static ssize_t +fw_crash_state_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = + (struct megasas_instance *) shost->hostdata; + + return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state); +} + +static ssize_t +page_size_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1); +} + +static ssize_t +ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; + + return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding)); +} + +static ssize_t +fw_cmds_outstanding_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; + + return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding)); +} + +static ssize_t +enable_sdev_max_qd_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; + + return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd); +} + +static ssize_t +enable_sdev_max_qd_store(struct device *cdev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata; + u32 val = 0; + bool is_target_prop; + int ret_target_prop = DCMD_FAILED; + struct scsi_device *sdev; + + if (kstrtou32(buf, 0, &val) != 0) { + pr_err("megasas: could not set enable_sdev_max_qd\n"); + return -EINVAL; + } + + mutex_lock(&instance->reset_mutex); + if (val) + instance->enable_sdev_max_qd = true; + else + instance->enable_sdev_max_qd = false; + + shost_for_each_device(sdev, shost) { + ret_target_prop = megasas_get_target_prop(instance, sdev); + is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; + megasas_set_fw_assisted_qd(sdev, is_target_prop); + } + mutex_unlock(&instance->reset_mutex); + + return strlen(buf); +} + +static ssize_t +dump_system_regs_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = + (struct megasas_instance *)shost->hostdata; + + return megasas_dump_sys_regs(instance->reg_set, buf); +} + +static ssize_t +raid_map_id_show(struct device *cdev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct megasas_instance *instance = + (struct megasas_instance *)shost->hostdata; + + return snprintf(buf, PAGE_SIZE, "%ld\n", + (unsigned long)instance->map_id); +} + +static DEVICE_ATTR_RW(fw_crash_buffer); +static DEVICE_ATTR_RO(fw_crash_buffer_size); +static DEVICE_ATTR_RW(fw_crash_state); +static DEVICE_ATTR_RO(page_size); +static DEVICE_ATTR_RO(ldio_outstanding); +static DEVICE_ATTR_RO(fw_cmds_outstanding); +static DEVICE_ATTR_RW(enable_sdev_max_qd); +static DEVICE_ATTR_RO(dump_system_regs); +static DEVICE_ATTR_RO(raid_map_id); + +static struct attribute *megaraid_host_attrs[] = { + &dev_attr_fw_crash_buffer_size.attr, + &dev_attr_fw_crash_buffer.attr, + &dev_attr_fw_crash_state.attr, + &dev_attr_page_size.attr, + &dev_attr_ldio_outstanding.attr, + &dev_attr_fw_cmds_outstanding.attr, + &dev_attr_enable_sdev_max_qd.attr, + &dev_attr_dump_system_regs.attr, + &dev_attr_raid_map_id.attr, + NULL, +}; + +ATTRIBUTE_GROUPS(megaraid_host); + +/* + * Scsi host template for megaraid_sas driver + */ +static struct scsi_host_template megasas_template = { + + .module = THIS_MODULE, + .name = "Avago SAS based MegaRAID driver", + .proc_name = "megaraid_sas", + .slave_configure = megasas_slave_configure, + .slave_alloc = megasas_slave_alloc, + .slave_destroy = megasas_slave_destroy, + .queuecommand = megasas_queue_command, + .eh_target_reset_handler = megasas_reset_target, + .eh_abort_handler = megasas_task_abort, + .eh_host_reset_handler = megasas_reset_bus_host, + .eh_timed_out = megasas_reset_timer, + .shost_groups = megaraid_host_groups, + .bios_param = megasas_bios_param, + .map_queues = megasas_map_queues, + .mq_poll = megasas_blk_mq_poll, + .change_queue_depth = scsi_change_queue_depth, + .max_segment_size = 0xffffffff, + .cmd_size = sizeof(struct megasas_cmd_priv), +}; + +/** + * megasas_complete_int_cmd - Completes an internal command + * @instance: Adapter soft state + * @cmd: Command to be completed + * + * The megasas_issue_blocked_cmd() function waits for a command to complete + * after it issues a command. This function wakes up that waiting routine by + * calling wake_up() on the wait queue. + */ +static void +megasas_complete_int_cmd(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + if (cmd->cmd_status_drv == DCMD_INIT) + cmd->cmd_status_drv = + (cmd->frame->io.cmd_status == MFI_STAT_OK) ? + DCMD_SUCCESS : DCMD_FAILED; + + wake_up(&instance->int_cmd_wait_q); +} + +/** + * megasas_complete_abort - Completes aborting a command + * @instance: Adapter soft state + * @cmd: Cmd that was issued to abort another cmd + * + * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q + * after it issues an abort on a previously issued command. This function + * wakes up all functions waiting on the same wait queue. + */ +static void +megasas_complete_abort(struct megasas_instance *instance, + struct megasas_cmd *cmd) +{ + if (cmd->sync_cmd) { + cmd->sync_cmd = 0; + cmd->cmd_status_drv = DCMD_SUCCESS; + wake_up(&instance->abort_cmd_wait_q); + } +} + +static void +megasas_set_ld_removed_by_fw(struct megasas_instance *instance) +{ + uint i; + + for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) { + if (instance->ld_ids_prev[i] != 0xff && + instance->ld_ids_from_raidmap[i] == 0xff) { + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, + "LD target ID %d removed from RAID map\n", i); + instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED; + } + } +} + +/** + * megasas_complete_cmd - Completes a command + * @instance: Adapter soft state + * @cmd: Command to be completed + * @alt_status: If non-zero, use this value as status to + * SCSI mid-layer instead of the value returned + * by the FW. This should be used if caller wants + * an alternate status (as in the case of aborted + * commands) + */ +void +megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, + u8 alt_status) +{ + int exception = 0; + struct megasas_header *hdr = &cmd->frame->hdr; + unsigned long flags; + struct fusion_context *fusion = instance->ctrl_context; + u32 opcode, status; + + /* flag for the retry reset */ + cmd->retry_for_fw_reset = 0; + + if (cmd->scmd) + megasas_priv(cmd->scmd)->cmd_priv = NULL; + + switch (hdr->cmd) { + case MFI_CMD_INVALID: + /* Some older 1068 controller FW may keep a pended + MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel + when booting the kdump kernel. Ignore this command to + prevent a kernel panic on shutdown of the kdump kernel. */ + dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command " + "completed\n"); + dev_warn(&instance->pdev->dev, "If you have a controller " + "other than PERC5, please upgrade your firmware\n"); + break; + case MFI_CMD_PD_SCSI_IO: + case MFI_CMD_LD_SCSI_IO: + + /* + * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been + * issued either through an IO path or an IOCTL path. If it + * was via IOCTL, we will send it to internal completion. + */ + if (cmd->sync_cmd) { + cmd->sync_cmd = 0; + megasas_complete_int_cmd(instance, cmd); + break; + } + fallthrough; + + case MFI_CMD_LD_READ: + case MFI_CMD_LD_WRITE: + + if (alt_status) { + cmd->scmd->result = alt_status << 16; + exception = 1; + } + + if (exception) { + + atomic_dec(&instance->fw_outstanding); + + scsi_dma_unmap(cmd->scmd); + scsi_done(cmd->scmd); + megasas_return_cmd(instance, cmd); + + break; + } + + switch (hdr->cmd_status) { + + case MFI_STAT_OK: + cmd->scmd->result = DID_OK << 16; + break; + + case MFI_STAT_SCSI_IO_FAILED: + case MFI_STAT_LD_INIT_IN_PROGRESS: + cmd->scmd->result = + (DID_ERROR << 16) | hdr->scsi_status; + break; + + case MFI_STAT_SCSI_DONE_WITH_ERROR: + + cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; + + if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { + memset(cmd->scmd->sense_buffer, 0, + SCSI_SENSE_BUFFERSIZE); + memcpy(cmd->scmd->sense_buffer, cmd->sense, + hdr->sense_len); + } + + break; + + case MFI_STAT_LD_OFFLINE: + case MFI_STAT_DEVICE_NOT_FOUND: + cmd->scmd->result = DID_BAD_TARGET << 16; + break; + + default: + dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n", + hdr->cmd_status); + cmd->scmd->result = DID_ERROR << 16; + break; + } + + atomic_dec(&instance->fw_outstanding); + + scsi_dma_unmap(cmd->scmd); + scsi_done(cmd->scmd); + megasas_return_cmd(instance, cmd); + + break; + + case MFI_CMD_SMP: + case MFI_CMD_STP: + case MFI_CMD_NVME: + case MFI_CMD_TOOLBOX: + megasas_complete_int_cmd(instance, cmd); + break; + + case MFI_CMD_DCMD: + opcode = le32_to_cpu(cmd->frame->dcmd.opcode); + /* Check for LD map update */ + if ((opcode == MR_DCMD_LD_MAP_GET_INFO) + && (cmd->frame->dcmd.mbox.b[1] == 1)) { + fusion->fast_path_io = 0; + spin_lock_irqsave(instance->host->host_lock, flags); + status = cmd->frame->hdr.cmd_status; + instance->map_update_cmd = NULL; + if (status != MFI_STAT_OK) { + if (status != MFI_STAT_NOT_FOUND) + dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n", + cmd->frame->hdr.cmd_status); + else { + megasas_return_cmd(instance, cmd); + spin_unlock_irqrestore( + instance->host->host_lock, + flags); + break; + } + } + + megasas_return_cmd(instance, cmd); + + /* + * Set fast path IO to ZERO. + * Validate Map will set proper value. + * Meanwhile all IOs will go as LD IO. + */ + if (status == MFI_STAT_OK && + (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) { + instance->map_id++; + fusion->fast_path_io = 1; + } else { + fusion->fast_path_io = 0; + } + + if (instance->adapter_type >= INVADER_SERIES) + megasas_set_ld_removed_by_fw(instance); + + megasas_sync_map_info(instance); + spin_unlock_irqrestore(instance->host->host_lock, + flags); + + break; + } + if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO || + opcode == MR_DCMD_CTRL_EVENT_GET) { + spin_lock_irqsave(&poll_aen_lock, flags); + megasas_poll_wait_aen = 0; + spin_unlock_irqrestore(&poll_aen_lock, flags); + } + + /* FW has an updated PD sequence */ + if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && + (cmd->frame->dcmd.mbox.b[0] == 1)) { + + spin_lock_irqsave(instance->host->host_lock, flags); + status = cmd->frame->hdr.cmd_status; + instance->jbod_seq_cmd = NULL; + megasas_return_cmd(instance, cmd); + + if (status == MFI_STAT_OK) { + instance->pd_seq_map_id++; + /* Re-register a pd sync seq num cmd */ + if (megasas_sync_pd_seq_num(instance, true)) + instance->use_seqnum_jbod_fp = false; + } else + instance->use_seqnum_jbod_fp = false; + + spin_unlock_irqrestore(instance->host->host_lock, flags); + break; + } + + /* + * See if got an event notification + */ + if (opcode == MR_DCMD_CTRL_EVENT_WAIT) + megasas_service_aen(instance, cmd); + else + megasas_complete_int_cmd(instance, cmd); + + break; + + case MFI_CMD_ABORT: + /* + * Cmd issued to abort another cmd returned + */ + megasas_complete_abort(instance, cmd); + break; + + default: + dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n", + hdr->cmd); + megasas_complete_int_cmd(instance, cmd); + break; + } +} + +/** + * megasas_issue_pending_cmds_again - issue all pending cmds + * in FW again because of the fw reset + * @instance: Adapter soft state + */ +static inline void +megasas_issue_pending_cmds_again(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + struct list_head clist_local; + union megasas_evt_class_locale class_locale; + unsigned long flags; + u32 seq_num; + + INIT_LIST_HEAD(&clist_local); + spin_lock_irqsave(&instance->hba_lock, flags); + list_splice_init(&instance->internal_reset_pending_q, &clist_local); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + while (!list_empty(&clist_local)) { + cmd = list_entry((&clist_local)->next, + struct megasas_cmd, list); + list_del_init(&cmd->list); + + if (cmd->sync_cmd || cmd->scmd) { + dev_notice(&instance->pdev->dev, "command %p, %p:%d" + "detected to be pending while HBA reset\n", + cmd, cmd->scmd, cmd->sync_cmd); + + cmd->retry_for_fw_reset++; + + if (cmd->retry_for_fw_reset == 3) { + dev_notice(&instance->pdev->dev, "cmd %p, %p:%d" + "was tried multiple times during reset." + "Shutting down the HBA\n", + cmd, cmd->scmd, cmd->sync_cmd); + instance->instancet->disable_intr(instance); + atomic_set(&instance->fw_reset_no_pci_access, 1); + megaraid_sas_kill_hba(instance); + return; + } + } + + if (cmd->sync_cmd == 1) { + if (cmd->scmd) { + dev_notice(&instance->pdev->dev, "unexpected" + "cmd attached to internal command!\n"); + } + dev_notice(&instance->pdev->dev, "%p synchronous cmd" + "on the internal reset queue," + "issue it again.\n", cmd); + cmd->cmd_status_drv = DCMD_INIT; + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr, + 0, instance->reg_set); + } else if (cmd->scmd) { + dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]" + "detected on the internal queue, issue again.\n", + cmd, cmd->scmd->cmnd[0]); + + atomic_inc(&instance->fw_outstanding); + instance->instancet->fire_cmd(instance, + cmd->frame_phys_addr, + cmd->frame_count-1, instance->reg_set); + } else { + dev_notice(&instance->pdev->dev, "%p unexpected cmd on the" + "internal reset defer list while re-issue!!\n", + cmd); + } + } + + if (instance->aen_cmd) { + dev_notice(&instance->pdev->dev, "aen_cmd in def process\n"); + megasas_return_cmd(instance, instance->aen_cmd); + + instance->aen_cmd = NULL; + } + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + seq_num = instance->last_seq_num; + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + + megasas_register_aen(instance, seq_num, class_locale.word); +} + +/* + * Move the internal reset pending commands to a deferred queue. + * + * We move the commands pending at internal reset time to a + * pending queue. This queue would be flushed after successful + * completion of the internal reset sequence. if the internal reset + * did not complete in time, the kernel reset handler would flush + * these commands. + */ +static void +megasas_internal_reset_defer_cmds(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + int i; + u16 max_cmd = instance->max_fw_cmds; + u32 defer_index; + unsigned long flags; + + defer_index = 0; + spin_lock_irqsave(&instance->mfi_pool_lock, flags); + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + if (cmd->sync_cmd == 1 || cmd->scmd) { + dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p" + "on the defer queue as internal\n", + defer_index, cmd, cmd->sync_cmd, cmd->scmd); + + if (!list_empty(&cmd->list)) { + dev_notice(&instance->pdev->dev, "ERROR while" + " moving this cmd:%p, %d %p, it was" + "discovered on some list?\n", + cmd, cmd->sync_cmd, cmd->scmd); + + list_del_init(&cmd->list); + } + defer_index++; + list_add_tail(&cmd->list, + &instance->internal_reset_pending_q); + } + } + spin_unlock_irqrestore(&instance->mfi_pool_lock, flags); +} + + +static void +process_fw_state_change_wq(struct work_struct *work) +{ + struct megasas_instance *instance = + container_of(work, struct megasas_instance, work_init); + u32 wait; + unsigned long flags; + + if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) { + dev_notice(&instance->pdev->dev, "error, recovery st %x\n", + atomic_read(&instance->adprecovery)); + return ; + } + + if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) { + dev_notice(&instance->pdev->dev, "FW detected to be in fault" + "state, restarting it...\n"); + + instance->instancet->disable_intr(instance); + atomic_set(&instance->fw_outstanding, 0); + + atomic_set(&instance->fw_reset_no_pci_access, 1); + instance->instancet->adp_reset(instance, instance->reg_set); + atomic_set(&instance->fw_reset_no_pci_access, 0); + + dev_notice(&instance->pdev->dev, "FW restarted successfully," + "initiating next stage...\n"); + + dev_notice(&instance->pdev->dev, "HBA recovery state machine," + "state 2 starting...\n"); + + /* waiting for about 20 second before start the second init */ + for (wait = 0; wait < 30; wait++) { + msleep(1000); + } + + if (megasas_transition_to_ready(instance, 1)) { + dev_notice(&instance->pdev->dev, "adapter not ready\n"); + + atomic_set(&instance->fw_reset_no_pci_access, 1); + megaraid_sas_kill_hba(instance); + return ; + } + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) + ) { + *instance->consumer = *instance->producer; + } else { + *instance->consumer = 0; + *instance->producer = 0; + } + + megasas_issue_init_mfi(instance); + + spin_lock_irqsave(&instance->hba_lock, flags); + atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); + spin_unlock_irqrestore(&instance->hba_lock, flags); + instance->instancet->enable_intr(instance); + + megasas_issue_pending_cmds_again(instance); + instance->issuepend_done = 1; + } +} + +/** + * megasas_deplete_reply_queue - Processes all completed commands + * @instance: Adapter soft state + * @alt_status: Alternate status to be returned to + * SCSI mid-layer instead of the status + * returned by the FW + * Note: this must be called with hba lock held + */ +static int +megasas_deplete_reply_queue(struct megasas_instance *instance, + u8 alt_status) +{ + u32 mfiStatus; + u32 fw_state; + + if (instance->instancet->check_reset(instance, instance->reg_set) == 1) + return IRQ_HANDLED; + + mfiStatus = instance->instancet->clear_intr(instance); + if (mfiStatus == 0) { + /* Hardware may not set outbound_intr_status in MSI-X mode */ + if (!instance->msix_vectors) + return IRQ_NONE; + } + + instance->mfiStatus = mfiStatus; + + if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { + fw_state = instance->instancet->read_fw_status_reg( + instance) & MFI_STATE_MASK; + + if (fw_state != MFI_STATE_FAULT) { + dev_notice(&instance->pdev->dev, "fw state:%x\n", + fw_state); + } + + if ((fw_state == MFI_STATE_FAULT) && + (instance->disableOnlineCtrlReset == 0)) { + dev_notice(&instance->pdev->dev, "wait adp restart\n"); + + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS1064R) || + (instance->pdev->device == + PCI_DEVICE_ID_DELL_PERC5) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_VERDE_ZCR)) { + + *instance->consumer = + cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN); + } + + + instance->instancet->disable_intr(instance); + atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); + instance->issuepend_done = 0; + + atomic_set(&instance->fw_outstanding, 0); + megasas_internal_reset_defer_cmds(instance); + + dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n", + fw_state, atomic_read(&instance->adprecovery)); + + schedule_work(&instance->work_init); + return IRQ_HANDLED; + + } else { + dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n", + fw_state, instance->disableOnlineCtrlReset); + } + } + + tasklet_schedule(&instance->isr_tasklet); + return IRQ_HANDLED; +} + +/** + * megasas_isr - isr entry point + * @irq: IRQ number + * @devp: IRQ context address + */ +static irqreturn_t megasas_isr(int irq, void *devp) +{ + struct megasas_irq_context *irq_context = devp; + struct megasas_instance *instance = irq_context->instance; + unsigned long flags; + irqreturn_t rc; + + if (atomic_read(&instance->fw_reset_no_pci_access)) + return IRQ_HANDLED; + + spin_lock_irqsave(&instance->hba_lock, flags); + rc = megasas_deplete_reply_queue(instance, DID_OK); + spin_unlock_irqrestore(&instance->hba_lock, flags); + + return rc; +} + +/** + * megasas_transition_to_ready - Move the FW to READY state + * @instance: Adapter soft state + * @ocr: Adapter reset state + * + * During the initialization, FW passes can potentially be in any one of + * several possible states. If the FW in operational, waiting-for-handshake + * states, driver must take steps to bring it to ready state. Otherwise, it + * has to wait for the ready state. + */ +int +megasas_transition_to_ready(struct megasas_instance *instance, int ocr) +{ + int i; + u8 max_wait; + u32 fw_state; + u32 abs_state, curr_abs_state; + + abs_state = instance->instancet->read_fw_status_reg(instance); + fw_state = abs_state & MFI_STATE_MASK; + + if (fw_state != MFI_STATE_READY) + dev_info(&instance->pdev->dev, "Waiting for FW to come to ready" + " state\n"); + + while (fw_state != MFI_STATE_READY) { + + switch (fw_state) { + + case MFI_STATE_FAULT: + dev_printk(KERN_ERR, &instance->pdev->dev, + "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n", + abs_state & MFI_STATE_FAULT_CODE, + abs_state & MFI_STATE_FAULT_SUBCODE, __func__); + if (ocr) { + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + } else { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); + megasas_dump_reg_set(instance->reg_set); + return -ENODEV; + } + + case MFI_STATE_WAIT_HANDSHAKE: + /* + * Set the CLR bit in inbound doorbell + */ + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->adapter_type != MFI_SERIES)) + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->doorbell); + else + writel( + MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_BOOT_MESSAGE_PENDING: + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->adapter_type != MFI_SERIES)) + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->doorbell); + else + writel(MFI_INIT_HOTPLUG, + &instance->reg_set->inbound_doorbell); + + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_OPERATIONAL: + /* + * Bring it to READY state; assuming max wait 10 secs + */ + instance->instancet->disable_intr(instance); + if ((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0071SKINNY) || + (instance->adapter_type != MFI_SERIES)) { + writel(MFI_RESET_FLAGS, + &instance->reg_set->doorbell); + + if (instance->adapter_type != MFI_SERIES) { + for (i = 0; i < (10 * 1000); i += 20) { + if (megasas_readl( + instance, + &instance-> + reg_set-> + doorbell) & 1) + msleep(20); + else + break; + } + } + } else + writel(MFI_RESET_FLAGS, + &instance->reg_set->inbound_doorbell); + + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_UNDEFINED: + /* + * This state should not last for more than 2 seconds + */ + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_BB_INIT: + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_FW_INIT: + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_FW_INIT_2: + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_DEVICE_SCAN: + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + case MFI_STATE_FLUSH_CACHE: + max_wait = MEGASAS_RESET_WAIT_TIME; + break; + + default: + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n", + fw_state); + dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); + megasas_dump_reg_set(instance->reg_set); + return -ENODEV; + } + + /* + * The cur_state should not last for more than max_wait secs + */ + for (i = 0; i < max_wait * 50; i++) { + curr_abs_state = instance->instancet-> + read_fw_status_reg(instance); + + if (abs_state == curr_abs_state) { + msleep(20); + } else + break; + } + + /* + * Return error if fw_state hasn't changed after max_wait + */ + if (curr_abs_state == abs_state) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed " + "in %d secs\n", fw_state, max_wait); + dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n"); + megasas_dump_reg_set(instance->reg_set); + return -ENODEV; + } + + abs_state = curr_abs_state; + fw_state = curr_abs_state & MFI_STATE_MASK; + } + dev_info(&instance->pdev->dev, "FW now in Ready state\n"); + + return 0; +} + +/** + * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool + * @instance: Adapter soft state + */ +static void megasas_teardown_frame_pool(struct megasas_instance *instance) +{ + int i; + u16 max_cmd = instance->max_mfi_cmds; + struct megasas_cmd *cmd; + + if (!instance->frame_dma_pool) + return; + + /* + * Return all frames to pool + */ + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + if (cmd->frame) + dma_pool_free(instance->frame_dma_pool, cmd->frame, + cmd->frame_phys_addr); + + if (cmd->sense) + dma_pool_free(instance->sense_dma_pool, cmd->sense, + cmd->sense_phys_addr); + } + + /* + * Now destroy the pool itself + */ + dma_pool_destroy(instance->frame_dma_pool); + dma_pool_destroy(instance->sense_dma_pool); + + instance->frame_dma_pool = NULL; + instance->sense_dma_pool = NULL; +} + +/** + * megasas_create_frame_pool - Creates DMA pool for cmd frames + * @instance: Adapter soft state + * + * Each command packet has an embedded DMA memory buffer that is used for + * filling MFI frame and the SG list that immediately follows the frame. This + * function creates those DMA memory buffers for each command packet by using + * PCI pool facility. + */ +static int megasas_create_frame_pool(struct megasas_instance *instance) +{ + int i; + u16 max_cmd; + u32 frame_count; + struct megasas_cmd *cmd; + + max_cmd = instance->max_mfi_cmds; + + /* + * For MFI controllers. + * max_num_sge = 60 + * max_sge_sz = 16 byte (sizeof megasas_sge_skinny) + * Total 960 byte (15 MFI frame of 64 byte) + * + * Fusion adapter require only 3 extra frame. + * max_num_sge = 16 (defined as MAX_IOCTL_SGE) + * max_sge_sz = 12 byte (sizeof megasas_sge64) + * Total 192 byte (3 MFI frame of 64 byte) + */ + frame_count = (instance->adapter_type == MFI_SERIES) ? + (15 + 1) : (3 + 1); + instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count; + /* + * Use DMA pool facility provided by PCI layer + */ + instance->frame_dma_pool = dma_pool_create("megasas frame pool", + &instance->pdev->dev, + instance->mfi_frame_size, 256, 0); + + if (!instance->frame_dma_pool) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n"); + return -ENOMEM; + } + + instance->sense_dma_pool = dma_pool_create("megasas sense pool", + &instance->pdev->dev, 128, + 4, 0); + + if (!instance->sense_dma_pool) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n"); + + dma_pool_destroy(instance->frame_dma_pool); + instance->frame_dma_pool = NULL; + + return -ENOMEM; + } + + /* + * Allocate and attach a frame to each of the commands in cmd_list. + * By making cmd->index as the context instead of the &cmd, we can + * always use 32bit context regardless of the architecture + */ + for (i = 0; i < max_cmd; i++) { + + cmd = instance->cmd_list[i]; + + cmd->frame = dma_pool_zalloc(instance->frame_dma_pool, + GFP_KERNEL, &cmd->frame_phys_addr); + + cmd->sense = dma_pool_alloc(instance->sense_dma_pool, + GFP_KERNEL, &cmd->sense_phys_addr); + + /* + * megasas_teardown_frame_pool() takes care of freeing + * whatever has been allocated + */ + if (!cmd->frame || !cmd->sense) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n"); + megasas_teardown_frame_pool(instance); + return -ENOMEM; + } + + cmd->frame->io.context = cpu_to_le32(cmd->index); + cmd->frame->io.pad_0 = 0; + if ((instance->adapter_type == MFI_SERIES) && reset_devices) + cmd->frame->hdr.cmd = MFI_CMD_INVALID; + } + + return 0; +} + +/** + * megasas_free_cmds - Free all the cmds in the free cmd pool + * @instance: Adapter soft state + */ +void megasas_free_cmds(struct megasas_instance *instance) +{ + int i; + + /* First free the MFI frame pool */ + megasas_teardown_frame_pool(instance); + + /* Free all the commands in the cmd_list */ + for (i = 0; i < instance->max_mfi_cmds; i++) + + kfree(instance->cmd_list[i]); + + /* Free the cmd_list buffer itself */ + kfree(instance->cmd_list); + instance->cmd_list = NULL; + + INIT_LIST_HEAD(&instance->cmd_pool); +} + +/** + * megasas_alloc_cmds - Allocates the command packets + * @instance: Adapter soft state + * + * Each command that is issued to the FW, whether IO commands from the OS or + * internal commands like IOCTLs, are wrapped in local data structure called + * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to + * the FW. + * + * Each frame has a 32-bit field called context (tag). This context is used + * to get back the megasas_cmd from the frame when a frame gets completed in + * the ISR. Typically the address of the megasas_cmd itself would be used as + * the context. But we wanted to keep the differences between 32 and 64 bit + * systems to the mininum. We always use 32 bit integers for the context. In + * this driver, the 32 bit values are the indices into an array cmd_list. + * This array is used only to look up the megasas_cmd given the context. The + * free commands themselves are maintained in a linked list called cmd_pool. + */ +int megasas_alloc_cmds(struct megasas_instance *instance) +{ + int i; + int j; + u16 max_cmd; + struct megasas_cmd *cmd; + + max_cmd = instance->max_mfi_cmds; + + /* + * instance->cmd_list is an array of struct megasas_cmd pointers. + * Allocate the dynamic array first and then allocate individual + * commands. + */ + instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); + + if (!instance->cmd_list) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n"); + return -ENOMEM; + } + + for (i = 0; i < max_cmd; i++) { + instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), + GFP_KERNEL); + + if (!instance->cmd_list[i]) { + + for (j = 0; j < i; j++) + kfree(instance->cmd_list[j]); + + kfree(instance->cmd_list); + instance->cmd_list = NULL; + + return -ENOMEM; + } + } + + for (i = 0; i < max_cmd; i++) { + cmd = instance->cmd_list[i]; + memset(cmd, 0, sizeof(struct megasas_cmd)); + cmd->index = i; + cmd->scmd = NULL; + cmd->instance = instance; + + list_add_tail(&cmd->list, &instance->cmd_pool); + } + + /* + * Create a frame pool and assign one frame to each cmd + */ + if (megasas_create_frame_pool(instance)) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n"); + megasas_free_cmds(instance); + return -ENOMEM; + } + + return 0; +} + +/* + * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state. + * @instance: Adapter soft state + * + * Return 0 for only Fusion adapter, if driver load/unload is not in progress + * or FW is not under OCR. + */ +inline int +dcmd_timeout_ocr_possible(struct megasas_instance *instance) { + + if (instance->adapter_type == MFI_SERIES) + return KILL_ADAPTER; + else if (instance->unload || + test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, + &instance->reset_flags)) + return IGNORE_TIMEOUT; + else + return INITIATE_OCR; +} + +static void +megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev) +{ + int ret; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + struct MR_PRIV_DEVICE *mr_device_priv_data; + u16 device_id = 0; + + device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id; + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__); + return; + } + + dcmd = &cmd->frame->dcmd; + + memset(instance->pd_info, 0, sizeof(*instance->pd_info)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.s[0] = cpu_to_le16(device_id); + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO)); + dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO); + + megasas_set_dma_settings(instance, dcmd, instance->pd_info_h, + sizeof(struct MR_PD_INFO)); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) + ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); + else + ret = megasas_issue_polled(instance, cmd); + + switch (ret) { + case DCMD_SUCCESS: + mr_device_priv_data = sdev->hostdata; + le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType); + mr_device_priv_data->interface_type = + instance->pd_info->state.ddf.pdType.intf; + break; + + case DCMD_TIMEOUT: + + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + + break; + } + + if (ret != DCMD_TIMEOUT) + megasas_return_cmd(instance, cmd); + + return; +} +/* + * megasas_get_pd_list_info - Returns FW's pd_list structure + * @instance: Adapter soft state + * @pd_list: pd_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_pd_list(struct megasas_instance *instance) +{ + int ret = 0, pd_index = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_PD_LIST *ci; + struct MR_PD_ADDRESS *pd_addr; + + if (instance->pd_list_not_supported) { + dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " + "not supported by firmware\n"); + return ret; + } + + ci = instance->pd_list_buf; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; + dcmd->mbox.b[1] = 0; + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)); + dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY); + + megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h, + (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST))); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) + ret = megasas_issue_blocked_cmd(instance, cmd, + MFI_IO_TIMEOUT_SECS); + else + ret = megasas_issue_polled(instance, cmd); + + switch (ret) { + case DCMD_FAILED: + dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY " + "failed/not supported by firmware\n"); + + if (instance->adapter_type != MFI_SERIES) + megaraid_sas_kill_hba(instance); + else + instance->pd_list_not_supported = 1; + break; + case DCMD_TIMEOUT: + + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + /* + * DCMD failed from AEN path. + * AEN path already hold reset_mutex to avoid PCI access + * while OCR is in progress. + */ + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n", + __func__, __LINE__); + break; + } + + break; + + case DCMD_SUCCESS: + pd_addr = ci->addr; + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n", + __func__, le32_to_cpu(ci->count)); + + if ((le32_to_cpu(ci->count) > + (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) + break; + + memset(instance->local_pd_list, 0, + MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); + + for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) { + instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid = + le16_to_cpu(pd_addr->deviceId); + instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType = + pd_addr->scsiDevType; + instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState = + MR_PD_STATE_SYSTEM; + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, + "PD%d: targetID: 0x%03x deviceType:0x%x\n", + pd_index, le16_to_cpu(pd_addr->deviceId), + pd_addr->scsiDevType); + pd_addr++; + } + + memcpy(instance->pd_list, instance->local_pd_list, + sizeof(instance->pd_list)); + break; + + } + + if (ret != DCMD_TIMEOUT) + megasas_return_cmd(instance, cmd); + + return ret; +} + +/* + * megasas_get_ld_list_info - Returns FW's ld_list structure + * @instance: Adapter soft state + * @ld_list: ld_list structure + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_get_ld_list(struct megasas_instance *instance) +{ + int ret = 0, ld_index = 0, ids = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_LIST *ci; + dma_addr_t ci_h = 0; + u32 ld_count; + + ci = instance->ld_list_buf; + ci_h = instance->ld_list_buf_h; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + if (instance->supportmax256vd) + dcmd->mbox.b[0] = 1; + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST)); + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST); + dcmd->pad_0 = 0; + + megasas_set_dma_settings(instance, dcmd, ci_h, + sizeof(struct MR_LD_LIST)); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) + ret = megasas_issue_blocked_cmd(instance, cmd, + MFI_IO_TIMEOUT_SECS); + else + ret = megasas_issue_polled(instance, cmd); + + ld_count = le32_to_cpu(ci->ldCount); + + switch (ret) { + case DCMD_FAILED: + megaraid_sas_kill_hba(instance); + break; + case DCMD_TIMEOUT: + + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + /* + * DCMD failed from AEN path. + * AEN path already hold reset_mutex to avoid PCI access + * while OCR is in progress. + */ + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + + break; + + case DCMD_SUCCESS: + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", + __func__, ld_count); + + if (ld_count > instance->fw_supported_vd_count) + break; + + memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); + + for (ld_index = 0; ld_index < ld_count; ld_index++) { + if (ci->ldList[ld_index].state != 0) { + ids = ci->ldList[ld_index].ref.targetId; + instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId; + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, + "LD%d: targetID: 0x%03x\n", + ld_index, ids); + } + } + + break; + } + + if (ret != DCMD_TIMEOUT) + megasas_return_cmd(instance, cmd); + + return ret; +} + +/** + * megasas_ld_list_query - Returns FW's ld_list structure + * @instance: Adapter soft state + * @query_type: ld_list structure type + * + * Issues an internal command (DCMD) to get the FW's controller PD + * list structure. This information is mainly used to find out SYSTEM + * supported by the FW. + */ +static int +megasas_ld_list_query(struct megasas_instance *instance, u8 query_type) +{ + int ret = 0, ld_index = 0, ids = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_LD_TARGETID_LIST *ci; + dma_addr_t ci_h = 0; + u32 tgtid_count; + + ci = instance->ld_targetid_list_buf; + ci_h = instance->ld_targetid_list_buf_h; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_warn(&instance->pdev->dev, + "megasas_ld_list_query: Failed to get cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.b[0] = query_type; + if (instance->supportmax256vd) + dcmd->mbox.b[2] = 1; + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST)); + dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY); + dcmd->pad_0 = 0; + + megasas_set_dma_settings(instance, dcmd, ci_h, + sizeof(struct MR_LD_TARGETID_LIST)); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) + ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); + else + ret = megasas_issue_polled(instance, cmd); + + switch (ret) { + case DCMD_FAILED: + dev_info(&instance->pdev->dev, + "DCMD not supported by firmware - %s %d\n", + __func__, __LINE__); + ret = megasas_get_ld_list(instance); + break; + case DCMD_TIMEOUT: + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + /* + * DCMD failed from AEN path. + * AEN path already hold reset_mutex to avoid PCI access + * while OCR is in progress. + */ + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + + break; + case DCMD_SUCCESS: + tgtid_count = le32_to_cpu(ci->count); + + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n", + __func__, tgtid_count); + + if ((tgtid_count > (instance->fw_supported_vd_count))) + break; + + memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); + for (ld_index = 0; ld_index < tgtid_count; ld_index++) { + ids = ci->targetId[ld_index]; + instance->ld_ids[ids] = ci->targetId[ld_index]; + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n", + ld_index, ci->targetId[ld_index]); + } + + break; + } + + if (ret != DCMD_TIMEOUT) + megasas_return_cmd(instance, cmd); + + return ret; +} + +/** + * megasas_host_device_list_query + * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET + * dcmd.mbox - reserved + * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure + * Desc: This DCMD will return the combined device list + * Status: MFI_STAT_OK - List returned successfully + * MFI_STAT_INVALID_CMD - Firmware support for the feature has been + * disabled + * @instance: Adapter soft state + * @is_probe: Driver probe check + * Return: 0 if DCMD succeeded + * non-zero if failed + */ +static int +megasas_host_device_list_query(struct megasas_instance *instance, + bool is_probe) +{ + int ret, i, target_id; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_HOST_DEVICE_LIST *ci; + u32 count; + dma_addr_t ci_h; + + ci = instance->host_device_list_buf; + ci_h = instance->host_device_list_buf_h; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_warn(&instance->pdev->dev, + "%s: failed to get cmd\n", + __func__); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->mbox.b[0] = is_probe ? 0 : 1; + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET); + + megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ); + + if (!instance->mask_interrupts) { + ret = megasas_issue_blocked_cmd(instance, cmd, + MFI_IO_TIMEOUT_SECS); + } else { + ret = megasas_issue_polled(instance, cmd); + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + } + + switch (ret) { + case DCMD_SUCCESS: + /* Fill the internal pd_list and ld_ids array based on + * targetIds returned by FW + */ + count = le32_to_cpu(ci->count); + + if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT)) + break; + + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n", + __func__, count); + + memset(instance->local_pd_list, 0, + MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); + memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT); + for (i = 0; i < count; i++) { + target_id = le16_to_cpu(ci->host_device_list[i].target_id); + if (ci->host_device_list[i].flags.u.bits.is_sys_pd) { + instance->local_pd_list[target_id].tid = target_id; + instance->local_pd_list[target_id].driveType = + ci->host_device_list[i].scsi_type; + instance->local_pd_list[target_id].driveState = + MR_PD_STATE_SYSTEM; + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, + "Device %d: PD targetID: 0x%03x deviceType:0x%x\n", + i, target_id, ci->host_device_list[i].scsi_type); + } else { + instance->ld_ids[target_id] = target_id; + if (megasas_dbg_lvl & LD_PD_DEBUG) + dev_info(&instance->pdev->dev, + "Device %d: LD targetID: 0x%03x\n", + i, target_id); + } + } + + memcpy(instance->pd_list, instance->local_pd_list, + sizeof(instance->pd_list)); + break; + + case DCMD_TIMEOUT: + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + break; + case DCMD_FAILED: + dev_err(&instance->pdev->dev, + "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n", + __func__); + break; + } + + if (ret != DCMD_TIMEOUT) + megasas_return_cmd(instance, cmd); + + return ret; +} + +/* + * megasas_update_ext_vd_details : Update details w.r.t Extended VD + * instance : Controller's instance +*/ +static void megasas_update_ext_vd_details(struct megasas_instance *instance) +{ + struct fusion_context *fusion; + u32 ventura_map_sz = 0; + + fusion = instance->ctrl_context; + /* For MFI based controllers return dummy success */ + if (!fusion) + return; + + instance->supportmax256vd = + instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs; + /* Below is additional check to address future FW enhancement */ + if (instance->ctrl_info_buf->max_lds > 64) + instance->supportmax256vd = 1; + + instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS + * MEGASAS_MAX_DEV_PER_CHANNEL; + instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS + * MEGASAS_MAX_DEV_PER_CHANNEL; + if (instance->supportmax256vd) { + instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT; + instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; + } else { + instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; + instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; + } + + dev_info(&instance->pdev->dev, + "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n", + instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0, + instance->ctrl_info_buf->max_lds); + + if (instance->max_raid_mapsize) { + ventura_map_sz = instance->max_raid_mapsize * + MR_MIN_MAP_SIZE; /* 64k */ + fusion->current_map_sz = ventura_map_sz; + fusion->max_map_sz = ventura_map_sz; + } else { + fusion->old_map_sz = + struct_size((struct MR_FW_RAID_MAP *)0, ldSpanMap, + instance->fw_supported_vd_count); + fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); + + fusion->max_map_sz = + max(fusion->old_map_sz, fusion->new_map_sz); + + if (instance->supportmax256vd) + fusion->current_map_sz = fusion->new_map_sz; + else + fusion->current_map_sz = fusion->old_map_sz; + } + /* irrespective of FW raid maps, driver raid map is constant */ + fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL); +} + +/* + * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES + * dcmd.hdr.length - number of bytes to read + * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES + * Desc: Fill in snapdump properties + * Status: MFI_STAT_OK- Command successful + */ +void megasas_get_snapdump_properties(struct megasas_instance *instance) +{ + int ret = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct MR_SNAPDUMP_PROPERTIES *ci; + dma_addr_t ci_h = 0; + + ci = instance->snapdump_prop; + ci_h = instance->snapdump_prop_h; + + if (!ci) + return; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n"); + return; + } + + dcmd = &cmd->frame->dcmd; + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES); + + megasas_set_dma_settings(instance, dcmd, ci_h, + sizeof(struct MR_SNAPDUMP_PROPERTIES)); + + if (!instance->mask_interrupts) { + ret = megasas_issue_blocked_cmd(instance, cmd, + MFI_IO_TIMEOUT_SECS); + } else { + ret = megasas_issue_polled(instance, cmd); + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + } + + switch (ret) { + case DCMD_SUCCESS: + instance->snapdump_wait_time = + min_t(u8, ci->trigger_min_num_sec_before_ocr, + MEGASAS_MAX_SNAP_DUMP_WAIT_TIME); + break; + + case DCMD_TIMEOUT: + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + } + + if (ret != DCMD_TIMEOUT) + megasas_return_cmd(instance, cmd); +} + +/** + * megasas_get_ctrl_info - Returns FW's controller structure + * @instance: Adapter soft state + * + * Issues an internal command (DCMD) to get the FW's controller structure. + * This information is mainly used to find out the maximum IO transfer per + * command supported by the FW. + */ +int +megasas_get_ctrl_info(struct megasas_instance *instance) +{ + int ret = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct megasas_ctrl_info *ci; + dma_addr_t ci_h = 0; + + ci = instance->ctrl_info_buf; + ci_h = instance->ctrl_info_buf_h; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n"); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + memset(ci, 0, sizeof(*ci)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO); + dcmd->mbox.b[0] = 1; + + megasas_set_dma_settings(instance, dcmd, ci_h, + sizeof(struct megasas_ctrl_info)); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) { + ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); + } else { + ret = megasas_issue_polled(instance, cmd); + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + } + + switch (ret) { + case DCMD_SUCCESS: + /* Save required controller information in + * CPU endianness format. + */ + le32_to_cpus((u32 *)&ci->properties.OnOffProperties); + le16_to_cpus((u16 *)&ci->properties.on_off_properties2); + le32_to_cpus((u32 *)&ci->adapterOperations2); + le32_to_cpus((u32 *)&ci->adapterOperations3); + le16_to_cpus((u16 *)&ci->adapter_operations4); + le32_to_cpus((u32 *)&ci->adapter_operations5); + + /* Update the latest Ext VD info. + * From Init path, store current firmware details. + * From OCR path, detect any firmware properties changes. + * in case of Firmware upgrade without system reboot. + */ + megasas_update_ext_vd_details(instance); + instance->support_seqnum_jbod_fp = + ci->adapterOperations3.useSeqNumJbodFP; + instance->support_morethan256jbod = + ci->adapter_operations4.support_pd_map_target_id; + instance->support_nvme_passthru = + ci->adapter_operations4.support_nvme_passthru; + instance->support_pci_lane_margining = + ci->adapter_operations5.support_pci_lane_margining; + instance->task_abort_tmo = ci->TaskAbortTO; + instance->max_reset_tmo = ci->MaxResetTO; + + /*Check whether controller is iMR or MR */ + instance->is_imr = (ci->memory_size ? 0 : 1); + + instance->snapdump_wait_time = + (ci->properties.on_off_properties2.enable_snap_dump ? + MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0); + + instance->enable_fw_dev_list = + ci->properties.on_off_properties2.enable_fw_dev_list; + + dev_info(&instance->pdev->dev, + "controller type\t: %s(%dMB)\n", + instance->is_imr ? "iMR" : "MR", + le16_to_cpu(ci->memory_size)); + + instance->disableOnlineCtrlReset = + ci->properties.OnOffProperties.disableOnlineCtrlReset; + instance->secure_jbod_support = + ci->adapterOperations3.supportSecurityonJBOD; + dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n", + instance->disableOnlineCtrlReset ? "Disabled" : "Enabled"); + dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n", + instance->secure_jbod_support ? "Yes" : "No"); + dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n", + instance->support_nvme_passthru ? "Yes" : "No"); + dev_info(&instance->pdev->dev, + "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n", + instance->task_abort_tmo, instance->max_reset_tmo); + dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n", + instance->support_seqnum_jbod_fp ? "Yes" : "No"); + dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n", + instance->support_pci_lane_margining ? "Yes" : "No"); + + break; + + case DCMD_TIMEOUT: + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + break; + case DCMD_FAILED: + megaraid_sas_kill_hba(instance); + break; + + } + + if (ret != DCMD_TIMEOUT) + megasas_return_cmd(instance, cmd); + + return ret; +} + +/* + * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer + * to firmware + * + * @instance: Adapter soft state + * @crash_buf_state - tell FW to turn ON/OFF crash dump feature + MR_CRASH_BUF_TURN_OFF = 0 + MR_CRASH_BUF_TURN_ON = 1 + * @return 0 on success non-zero on failure. + * Issues an internal command (DCMD) to set parameters for crash dump feature. + * Driver will send address of crash dump DMA buffer and set mbox to tell FW + * that driver supports crash dump feature. This DCMD will be sent only if + * crash dump feature is supported by the FW. + * + */ +int megasas_set_crash_dump_params(struct megasas_instance *instance, + u8 crash_buf_state) +{ + int ret = 0; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_err(&instance->pdev->dev, "Failed to get a free cmd\n"); + return -ENOMEM; + } + + + dcmd = &cmd->frame->dcmd; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + dcmd->mbox.b[0] = crash_buf_state; + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = MFI_STAT_INVALID_STATUS; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_NONE; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS); + + megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h, + CRASH_DMA_BUF_SIZE); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) + ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); + else + ret = megasas_issue_polled(instance, cmd); + + if (ret == DCMD_TIMEOUT) { + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + } else + megasas_return_cmd(instance, cmd); + + return ret; +} + +/** + * megasas_issue_init_mfi - Initializes the FW + * @instance: Adapter soft state + * + * Issues the INIT MFI cmd + */ +static int +megasas_issue_init_mfi(struct megasas_instance *instance) +{ + __le32 context; + struct megasas_cmd *cmd; + struct megasas_init_frame *init_frame; + struct megasas_init_queue_info *initq_info; + dma_addr_t init_frame_h; + dma_addr_t initq_info_h; + + /* + * Prepare a init frame. Note the init frame points to queue info + * structure. Each frame has SGL allocated after first 64 bytes. For + * this frame - since we don't need any SGL - we use SGL's space as + * queue info structure + * + * We will not get a NULL command below. We just created the pool. + */ + cmd = megasas_get_cmd(instance); + + init_frame = (struct megasas_init_frame *)cmd->frame; + initq_info = (struct megasas_init_queue_info *) + ((unsigned long)init_frame + 64); + + init_frame_h = cmd->frame_phys_addr; + initq_info_h = init_frame_h + 64; + + context = init_frame->context; + memset(init_frame, 0, MEGAMFI_FRAME_SIZE); + memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); + init_frame->context = context; + + initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1); + initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h); + + initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h); + initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h); + + init_frame->cmd = MFI_CMD_INIT; + init_frame->cmd_status = MFI_STAT_INVALID_STATUS; + init_frame->queue_info_new_phys_addr_lo = + cpu_to_le32(lower_32_bits(initq_info_h)); + init_frame->queue_info_new_phys_addr_hi = + cpu_to_le32(upper_32_bits(initq_info_h)); + + init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info)); + + /* + * disable the intr before firing the init frame to FW + */ + instance->instancet->disable_intr(instance); + + /* + * Issue the init frame in polled mode + */ + + if (megasas_issue_polled(instance, cmd)) { + dev_err(&instance->pdev->dev, "Failed to init firmware\n"); + megasas_return_cmd(instance, cmd); + goto fail_fw_init; + } + + megasas_return_cmd(instance, cmd); + + return 0; + +fail_fw_init: + return -EINVAL; +} + +static u32 +megasas_init_adapter_mfi(struct megasas_instance *instance) +{ + u32 context_sz; + u32 reply_q_sz; + + /* + * Get various operational parameters from status register + */ + instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; + /* + * Reduce the max supported cmds by 1. This is to ensure that the + * reply_q_sz (1 more than the max cmd that driver may send) + * does not exceed max cmds that the FW can support + */ + instance->max_fw_cmds = instance->max_fw_cmds-1; + instance->max_mfi_cmds = instance->max_fw_cmds; + instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >> + 0x10; + /* + * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands + * are reserved for IOCTL + driver's internal DCMDs. + */ + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { + instance->max_scsi_cmds = (instance->max_fw_cmds - + MEGASAS_SKINNY_INT_CMDS); + sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); + } else { + instance->max_scsi_cmds = (instance->max_fw_cmds - + MEGASAS_INT_CMDS); + sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS)); + } + + instance->cur_can_queue = instance->max_scsi_cmds; + /* + * Create a pool of commands + */ + if (megasas_alloc_cmds(instance)) + goto fail_alloc_cmds; + + /* + * Allocate memory for reply queue. Length of reply queue should + * be _one_ more than the maximum commands handled by the firmware. + * + * Note: When FW completes commands, it places corresponding contex + * values in this circular reply queue. This circular queue is a fairly + * typical producer-consumer queue. FW is the producer (of completed + * commands) and the driver is the consumer. + */ + context_sz = sizeof(u32); + reply_q_sz = context_sz * (instance->max_fw_cmds + 1); + + instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev, + reply_q_sz, &instance->reply_queue_h, GFP_KERNEL); + + if (!instance->reply_queue) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n"); + goto fail_reply_queue; + } + + if (megasas_issue_init_mfi(instance)) + goto fail_fw_init; + + if (megasas_get_ctrl_info(instance)) { + dev_err(&instance->pdev->dev, "(%d): Could get controller info " + "Fail from %s %d\n", instance->unique_id, + __func__, __LINE__); + goto fail_fw_init; + } + + instance->fw_support_ieee = 0; + instance->fw_support_ieee = + (instance->instancet->read_fw_status_reg(instance) & + 0x04000000); + + dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d", + instance->fw_support_ieee); + + if (instance->fw_support_ieee) + instance->flag_ieee = 1; + + return 0; + +fail_fw_init: + + dma_free_coherent(&instance->pdev->dev, reply_q_sz, + instance->reply_queue, instance->reply_queue_h); +fail_reply_queue: + megasas_free_cmds(instance); + +fail_alloc_cmds: + return 1; +} + +static +void megasas_setup_irq_poll(struct megasas_instance *instance) +{ + struct megasas_irq_context *irq_ctx; + u32 count, i; + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + + /* Initialize IRQ poll */ + for (i = 0; i < count; i++) { + irq_ctx = &instance->irq_context[i]; + irq_ctx->os_irq = pci_irq_vector(instance->pdev, i); + irq_ctx->irq_poll_scheduled = false; + irq_poll_init(&irq_ctx->irqpoll, + instance->threshold_reply_count, + megasas_irqpoll); + } +} + +/* + * megasas_setup_irqs_ioapic - register legacy interrupts. + * @instance: Adapter soft state + * + * Do not enable interrupt, only setup ISRs. + * + * Return 0 on success. + */ +static int +megasas_setup_irqs_ioapic(struct megasas_instance *instance) +{ + struct pci_dev *pdev; + + pdev = instance->pdev; + instance->irq_context[0].instance = instance; + instance->irq_context[0].MSIxIndex = 0; + snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u", + "megasas", instance->host->host_no); + if (request_irq(pci_irq_vector(pdev, 0), + instance->instancet->service_isr, IRQF_SHARED, + instance->irq_context->name, &instance->irq_context[0])) { + dev_err(&instance->pdev->dev, + "Failed to register IRQ from %s %d\n", + __func__, __LINE__); + return -1; + } + instance->perf_mode = MR_LATENCY_PERF_MODE; + instance->low_latency_index_start = 0; + return 0; +} + +/** + * megasas_setup_irqs_msix - register MSI-x interrupts. + * @instance: Adapter soft state + * @is_probe: Driver probe check + * + * Do not enable interrupt, only setup ISRs. + * + * Return 0 on success. + */ +static int +megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe) +{ + int i, j; + struct pci_dev *pdev; + + pdev = instance->pdev; + + /* Try MSI-x */ + for (i = 0; i < instance->msix_vectors; i++) { + instance->irq_context[i].instance = instance; + instance->irq_context[i].MSIxIndex = i; + snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u", + "megasas", instance->host->host_no, i); + if (request_irq(pci_irq_vector(pdev, i), + instance->instancet->service_isr, 0, instance->irq_context[i].name, + &instance->irq_context[i])) { + dev_err(&instance->pdev->dev, + "Failed to register IRQ for vector %d.\n", i); + for (j = 0; j < i; j++) { + if (j < instance->low_latency_index_start) + irq_update_affinity_hint( + pci_irq_vector(pdev, j), NULL); + free_irq(pci_irq_vector(pdev, j), + &instance->irq_context[j]); + } + /* Retry irq register for IO_APIC*/ + instance->msix_vectors = 0; + instance->msix_load_balance = false; + if (is_probe) { + pci_free_irq_vectors(instance->pdev); + return megasas_setup_irqs_ioapic(instance); + } else { + return -1; + } + } + } + + return 0; +} + +/* + * megasas_destroy_irqs- unregister interrupts. + * @instance: Adapter soft state + * return: void + */ +static void +megasas_destroy_irqs(struct megasas_instance *instance) { + + int i; + int count; + struct megasas_irq_context *irq_ctx; + + count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; + if (instance->adapter_type != MFI_SERIES) { + for (i = 0; i < count; i++) { + irq_ctx = &instance->irq_context[i]; + irq_poll_disable(&irq_ctx->irqpoll); + } + } + + if (instance->msix_vectors) + for (i = 0; i < instance->msix_vectors; i++) { + if (i < instance->low_latency_index_start) + irq_update_affinity_hint( + pci_irq_vector(instance->pdev, i), NULL); + free_irq(pci_irq_vector(instance->pdev, i), + &instance->irq_context[i]); + } + else + free_irq(pci_irq_vector(instance->pdev, 0), + &instance->irq_context[0]); +} + +/** + * megasas_setup_jbod_map - setup jbod map for FP seq_number. + * @instance: Adapter soft state + * + * Return 0 on success. + */ +void +megasas_setup_jbod_map(struct megasas_instance *instance) +{ + int i; + struct fusion_context *fusion = instance->ctrl_context; + size_t pd_seq_map_sz; + + pd_seq_map_sz = struct_size((struct MR_PD_CFG_SEQ_NUM_SYNC *)0, seq, + MAX_PHYSICAL_DEVICES); + + instance->use_seqnum_jbod_fp = + instance->support_seqnum_jbod_fp; + if (reset_devices || !fusion || + !instance->support_seqnum_jbod_fp) { + dev_info(&instance->pdev->dev, + "JBOD sequence map is disabled %s %d\n", + __func__, __LINE__); + instance->use_seqnum_jbod_fp = false; + return; + } + + if (fusion->pd_seq_sync[0]) + goto skip_alloc; + + for (i = 0; i < JBOD_MAPS_COUNT; i++) { + fusion->pd_seq_sync[i] = dma_alloc_coherent + (&instance->pdev->dev, pd_seq_map_sz, + &fusion->pd_seq_phys[i], GFP_KERNEL); + if (!fusion->pd_seq_sync[i]) { + dev_err(&instance->pdev->dev, + "Failed to allocate memory from %s %d\n", + __func__, __LINE__); + if (i == 1) { + dma_free_coherent(&instance->pdev->dev, + pd_seq_map_sz, fusion->pd_seq_sync[0], + fusion->pd_seq_phys[0]); + fusion->pd_seq_sync[0] = NULL; + } + instance->use_seqnum_jbod_fp = false; + return; + } + } + +skip_alloc: + if (!megasas_sync_pd_seq_num(instance, false) && + !megasas_sync_pd_seq_num(instance, true)) + instance->use_seqnum_jbod_fp = true; + else + instance->use_seqnum_jbod_fp = false; +} + +static void megasas_setup_reply_map(struct megasas_instance *instance) +{ + const struct cpumask *mask; + unsigned int queue, cpu, low_latency_index_start; + + low_latency_index_start = instance->low_latency_index_start; + + for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) { + mask = pci_irq_get_affinity(instance->pdev, queue); + if (!mask) + goto fallback; + + for_each_cpu(cpu, mask) + instance->reply_map[cpu] = queue; + } + return; + +fallback: + queue = low_latency_index_start; + for_each_possible_cpu(cpu) { + instance->reply_map[cpu] = queue; + if (queue == (instance->msix_vectors - 1)) + queue = low_latency_index_start; + else + queue++; + } +} + +/** + * megasas_get_device_list - Get the PD and LD device list from FW. + * @instance: Adapter soft state + * @return: Success or failure + * + * Issue DCMDs to Firmware to get the PD and LD list. + * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination + * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. + */ +static +int megasas_get_device_list(struct megasas_instance *instance) +{ + if (instance->enable_fw_dev_list) { + if (megasas_host_device_list_query(instance, true)) + return FAILED; + } else { + if (megasas_get_pd_list(instance) < 0) { + dev_err(&instance->pdev->dev, "failed to get PD list\n"); + return FAILED; + } + + if (megasas_ld_list_query(instance, + MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) { + dev_err(&instance->pdev->dev, "failed to get LD list\n"); + return FAILED; + } + } + + return SUCCESS; +} + +/** + * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint + * for high IOPS queues + * @instance: Adapter soft state + * return: void + */ +static inline void +megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance) +{ + int i; + unsigned int irq; + const struct cpumask *mask; + + if (instance->perf_mode == MR_BALANCED_PERF_MODE) { + mask = cpumask_of_node(dev_to_node(&instance->pdev->dev)); + + for (i = 0; i < instance->low_latency_index_start; i++) { + irq = pci_irq_vector(instance->pdev, i); + irq_set_affinity_and_hint(irq, mask); + } + } +} + +static int +__megasas_alloc_irq_vectors(struct megasas_instance *instance) +{ + int i, irq_flags; + struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start }; + struct irq_affinity *descp = &desc; + + irq_flags = PCI_IRQ_MSIX; + + if (instance->smp_affinity_enable) + irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; + else + descp = NULL; + + /* Do not allocate msix vectors for poll_queues. + * msix_vectors is always within a range of FW supported reply queue. + */ + i = pci_alloc_irq_vectors_affinity(instance->pdev, + instance->low_latency_index_start, + instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp); + + return i; +} + +/** + * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors + * @instance: Adapter soft state + * return: void + */ +static void +megasas_alloc_irq_vectors(struct megasas_instance *instance) +{ + int i; + unsigned int num_msix_req; + + instance->iopoll_q_count = 0; + if ((instance->adapter_type != MFI_SERIES) && + poll_queues) { + + instance->perf_mode = MR_LATENCY_PERF_MODE; + instance->low_latency_index_start = 1; + + /* reserve for default and non-mananged pre-vector. */ + if (instance->msix_vectors > (poll_queues + 2)) + instance->iopoll_q_count = poll_queues; + else + instance->iopoll_q_count = 0; + + num_msix_req = num_online_cpus() + instance->low_latency_index_start; + instance->msix_vectors = min(num_msix_req, + instance->msix_vectors); + + } + + i = __megasas_alloc_irq_vectors(instance); + + if (((instance->perf_mode == MR_BALANCED_PERF_MODE) + || instance->iopoll_q_count) && + (i != (instance->msix_vectors - instance->iopoll_q_count))) { + if (instance->msix_vectors) + pci_free_irq_vectors(instance->pdev); + /* Disable Balanced IOPS mode and try realloc vectors */ + instance->perf_mode = MR_LATENCY_PERF_MODE; + instance->low_latency_index_start = 1; + num_msix_req = num_online_cpus() + instance->low_latency_index_start; + + instance->msix_vectors = min(num_msix_req, + instance->msix_vectors); + + instance->iopoll_q_count = 0; + i = __megasas_alloc_irq_vectors(instance); + + } + + dev_info(&instance->pdev->dev, + "requested/available msix %d/%d poll_queue %d\n", + instance->msix_vectors - instance->iopoll_q_count, + i, instance->iopoll_q_count); + + if (i > 0) + instance->msix_vectors = i; + else + instance->msix_vectors = 0; + + if (instance->smp_affinity_enable) + megasas_set_high_iops_queue_affinity_and_hint(instance); +} + +/** + * megasas_init_fw - Initializes the FW + * @instance: Adapter soft state + * + * This is the main function for initializing firmware + */ + +static int megasas_init_fw(struct megasas_instance *instance) +{ + u32 max_sectors_1; + u32 max_sectors_2, tmp_sectors, msix_enable; + u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg; + resource_size_t base_addr; + void *base_addr_phys; + struct megasas_ctrl_info *ctrl_info = NULL; + unsigned long bar_list; + int i, j, loop; + struct IOV_111 *iovPtr; + struct fusion_context *fusion; + bool intr_coalescing; + unsigned int num_msix_req; + u16 lnksta, speed; + + fusion = instance->ctrl_context; + + /* Find first memory bar */ + bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); + instance->bar = find_first_bit(&bar_list, BITS_PER_LONG); + if (pci_request_selected_regions(instance->pdev, 1<<instance->bar, + "megasas: LSI")) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n"); + return -EBUSY; + } + + base_addr = pci_resource_start(instance->pdev, instance->bar); + instance->reg_set = ioremap(base_addr, 8192); + + if (!instance->reg_set) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n"); + goto fail_ioremap; + } + + base_addr_phys = &base_addr; + dev_printk(KERN_DEBUG, &instance->pdev->dev, + "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n", + instance->bar, base_addr_phys, instance->reg_set); + + if (instance->adapter_type != MFI_SERIES) + instance->instancet = &megasas_instance_template_fusion; + else { + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_SAS1078R: + case PCI_DEVICE_ID_LSI_SAS1078DE: + instance->instancet = &megasas_instance_template_ppc; + break; + case PCI_DEVICE_ID_LSI_SAS1078GEN2: + case PCI_DEVICE_ID_LSI_SAS0079GEN2: + instance->instancet = &megasas_instance_template_gen2; + break; + case PCI_DEVICE_ID_LSI_SAS0073SKINNY: + case PCI_DEVICE_ID_LSI_SAS0071SKINNY: + instance->instancet = &megasas_instance_template_skinny; + break; + case PCI_DEVICE_ID_LSI_SAS1064R: + case PCI_DEVICE_ID_DELL_PERC5: + default: + instance->instancet = &megasas_instance_template_xscale; + instance->pd_list_not_supported = 1; + break; + } + } + + if (megasas_transition_to_ready(instance, 0)) { + dev_info(&instance->pdev->dev, + "Failed to transition controller to ready from %s!\n", + __func__); + if (instance->adapter_type != MFI_SERIES) { + status_reg = instance->instancet->read_fw_status_reg( + instance); + if (status_reg & MFI_RESET_ADAPTER) { + if (megasas_adp_reset_wait_for_ready + (instance, true, 0) == FAILED) + goto fail_ready_state; + } else { + goto fail_ready_state; + } + } else { + atomic_set(&instance->fw_reset_no_pci_access, 1); + instance->instancet->adp_reset + (instance, instance->reg_set); + atomic_set(&instance->fw_reset_no_pci_access, 0); + + /*waiting for about 30 second before retry*/ + ssleep(30); + + if (megasas_transition_to_ready(instance, 0)) + goto fail_ready_state; + } + + dev_info(&instance->pdev->dev, + "FW restarted successfully from %s!\n", + __func__); + } + + megasas_init_ctrl_params(instance); + + if (megasas_set_dma_mask(instance)) + goto fail_ready_state; + + if (megasas_alloc_ctrl_mem(instance)) + goto fail_alloc_dma_buf; + + if (megasas_alloc_ctrl_dma_buffers(instance)) + goto fail_alloc_dma_buf; + + fusion = instance->ctrl_context; + + if (instance->adapter_type >= VENTURA_SERIES) { + scratch_pad_2 = + megasas_readl(instance, + &instance->reg_set->outbound_scratch_pad_2); + instance->max_raid_mapsize = ((scratch_pad_2 >> + MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) & + MR_MAX_RAID_MAP_SIZE_MASK); + } + + instance->enable_sdev_max_qd = enable_sdev_max_qd; + + switch (instance->adapter_type) { + case VENTURA_SERIES: + fusion->pcie_bw_limitation = true; + break; + case AERO_SERIES: + fusion->r56_div_offload = true; + break; + default: + break; + } + + /* Check if MSI-X is supported while in ready state */ + msix_enable = (instance->instancet->read_fw_status_reg(instance) & + 0x4000000) >> 0x1a; + if (msix_enable && !msix_disable) { + + scratch_pad_1 = megasas_readl + (instance, &instance->reg_set->outbound_scratch_pad_1); + /* Check max MSI-X vectors */ + if (fusion) { + if (instance->adapter_type == THUNDERBOLT_SERIES) { + /* Thunderbolt Series*/ + instance->msix_vectors = (scratch_pad_1 + & MR_MAX_REPLY_QUEUES_OFFSET) + 1; + } else { + instance->msix_vectors = ((scratch_pad_1 + & MR_MAX_REPLY_QUEUES_EXT_OFFSET) + >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; + + /* + * For Invader series, > 8 MSI-x vectors + * supported by FW/HW implies combined + * reply queue mode is enabled. + * For Ventura series, > 16 MSI-x vectors + * supported by FW/HW implies combined + * reply queue mode is enabled. + */ + switch (instance->adapter_type) { + case INVADER_SERIES: + if (instance->msix_vectors > 8) + instance->msix_combined = true; + break; + case AERO_SERIES: + case VENTURA_SERIES: + if (instance->msix_vectors > 16) + instance->msix_combined = true; + break; + } + + if (rdpq_enable) + instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? + 1 : 0; + + if (instance->adapter_type >= INVADER_SERIES && + !instance->msix_combined) { + instance->msix_load_balance = true; + instance->smp_affinity_enable = false; + } + + /* Save 1-15 reply post index address to local memory + * Index 0 is already saved from reg offset + * MPI2_REPLY_POST_HOST_INDEX_OFFSET + */ + for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) { + instance->reply_post_host_index_addr[loop] = + (u32 __iomem *) + ((u8 __iomem *)instance->reg_set + + MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET + + (loop * 0x10)); + } + } + + dev_info(&instance->pdev->dev, + "firmware supports msix\t: (%d)", + instance->msix_vectors); + if (msix_vectors) + instance->msix_vectors = min(msix_vectors, + instance->msix_vectors); + } else /* MFI adapters */ + instance->msix_vectors = 1; + + + /* + * For Aero (if some conditions are met), driver will configure a + * few additional reply queues with interrupt coalescing enabled. + * These queues with interrupt coalescing enabled are called + * High IOPS queues and rest of reply queues (based on number of + * logical CPUs) are termed as Low latency queues. + * + * Total Number of reply queues = High IOPS queues + low latency queues + * + * For rest of fusion adapters, 1 additional reply queue will be + * reserved for management commands, rest of reply queues + * (based on number of logical CPUs) will be used for IOs and + * referenced as IO queues. + * Total Number of reply queues = 1 + IO queues + * + * MFI adapters supports single MSI-x so single reply queue + * will be used for IO and management commands. + */ + + intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? + true : false; + if (intr_coalescing && + (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) && + (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES)) + instance->perf_mode = MR_BALANCED_PERF_MODE; + else + instance->perf_mode = MR_LATENCY_PERF_MODE; + + + if (instance->adapter_type == AERO_SERIES) { + pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta); + speed = lnksta & PCI_EXP_LNKSTA_CLS; + + /* + * For Aero, if PCIe link speed is <16 GT/s, then driver should operate + * in latency perf mode and enable R1 PCI bandwidth algorithm + */ + if (speed < 0x4) { + instance->perf_mode = MR_LATENCY_PERF_MODE; + fusion->pcie_bw_limitation = true; + } + + /* + * Performance mode settings provided through module parameter-perf_mode will + * take affect only for: + * 1. Aero family of adapters. + * 2. When user sets module parameter- perf_mode in range of 0-2. + */ + if ((perf_mode >= MR_BALANCED_PERF_MODE) && + (perf_mode <= MR_LATENCY_PERF_MODE)) + instance->perf_mode = perf_mode; + /* + * If intr coalescing is not supported by controller FW, then IOPS + * and Balanced modes are not feasible. + */ + if (!intr_coalescing) + instance->perf_mode = MR_LATENCY_PERF_MODE; + + } + + if (instance->perf_mode == MR_BALANCED_PERF_MODE) + instance->low_latency_index_start = + MR_HIGH_IOPS_QUEUE_COUNT; + else + instance->low_latency_index_start = 1; + + num_msix_req = num_online_cpus() + instance->low_latency_index_start; + + instance->msix_vectors = min(num_msix_req, + instance->msix_vectors); + + megasas_alloc_irq_vectors(instance); + if (!instance->msix_vectors) + instance->msix_load_balance = false; + } + /* + * MSI-X host index 0 is common for all adapter. + * It is used for all MPT based Adapters. + */ + if (instance->msix_combined) { + instance->reply_post_host_index_addr[0] = + (u32 *)((u8 *)instance->reg_set + + MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET); + } else { + instance->reply_post_host_index_addr[0] = + (u32 *)((u8 *)instance->reg_set + + MPI2_REPLY_POST_HOST_INDEX_OFFSET); + } + + if (!instance->msix_vectors) { + i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY); + if (i < 0) + goto fail_init_adapter; + } + + megasas_setup_reply_map(instance); + + dev_info(&instance->pdev->dev, + "current msix/online cpus\t: (%d/%d)\n", + instance->msix_vectors, (unsigned int)num_online_cpus()); + dev_info(&instance->pdev->dev, + "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled"); + + tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, + (unsigned long)instance); + + /* + * Below are default value for legacy Firmware. + * non-fusion based controllers + */ + instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES; + instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES; + /* Get operational params, sge flags, send init cmd to controller */ + if (instance->instancet->init_adapter(instance)) + goto fail_init_adapter; + + if (instance->adapter_type >= VENTURA_SERIES) { + scratch_pad_3 = + megasas_readl(instance, + &instance->reg_set->outbound_scratch_pad_3); + if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >= + MR_DEFAULT_NVME_PAGE_SHIFT) + instance->nvme_page_size = + (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK)); + + dev_info(&instance->pdev->dev, + "NVME page size\t: (%d)\n", instance->nvme_page_size); + } + + if (instance->msix_vectors ? + megasas_setup_irqs_msix(instance, 1) : + megasas_setup_irqs_ioapic(instance)) + goto fail_init_adapter; + + if (instance->adapter_type != MFI_SERIES) + megasas_setup_irq_poll(instance); + + instance->instancet->enable_intr(instance); + + dev_info(&instance->pdev->dev, "INIT adapter done\n"); + + megasas_setup_jbod_map(instance); + + if (megasas_get_device_list(instance) != SUCCESS) { + dev_err(&instance->pdev->dev, + "%s: megasas_get_device_list failed\n", + __func__); + goto fail_get_ld_pd_list; + } + + /* stream detection initialization */ + if (instance->adapter_type >= VENTURA_SERIES) { + fusion->stream_detect_by_ld = + kcalloc(MAX_LOGICAL_DRIVES_EXT, + sizeof(struct LD_STREAM_DETECT *), + GFP_KERNEL); + if (!fusion->stream_detect_by_ld) { + dev_err(&instance->pdev->dev, + "unable to allocate stream detection for pool of LDs\n"); + goto fail_get_ld_pd_list; + } + for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) { + fusion->stream_detect_by_ld[i] = + kzalloc(sizeof(struct LD_STREAM_DETECT), + GFP_KERNEL); + if (!fusion->stream_detect_by_ld[i]) { + dev_err(&instance->pdev->dev, + "unable to allocate stream detect by LD\n "); + for (j = 0; j < i; ++j) + kfree(fusion->stream_detect_by_ld[j]); + kfree(fusion->stream_detect_by_ld); + fusion->stream_detect_by_ld = NULL; + goto fail_get_ld_pd_list; + } + fusion->stream_detect_by_ld[i]->mru_bit_map + = MR_STREAM_BITMAP; + } + } + + /* + * Compute the max allowed sectors per IO: The controller info has two + * limits on max sectors. Driver should use the minimum of these two. + * + * 1 << stripe_sz_ops.min = max sectors per strip + * + * Note that older firmwares ( < FW ver 30) didn't report information + * to calculate max_sectors_1. So the number ended up as zero always. + */ + tmp_sectors = 0; + ctrl_info = instance->ctrl_info_buf; + + max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * + le16_to_cpu(ctrl_info->max_strips_per_io); + max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size); + + tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2); + + instance->peerIsPresent = ctrl_info->cluster.peerIsPresent; + instance->passive = ctrl_info->cluster.passive; + memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId)); + instance->UnevenSpanSupport = + ctrl_info->adapterOperations2.supportUnevenSpans; + if (instance->UnevenSpanSupport) { + struct fusion_context *fusion = instance->ctrl_context; + if (MR_ValidateMapInfo(instance, instance->map_id)) + fusion->fast_path_io = 1; + else + fusion->fast_path_io = 0; + + } + if (ctrl_info->host_interface.SRIOV) { + instance->requestorId = ctrl_info->iov.requestorId; + if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) { + if (!ctrl_info->adapterOperations2.activePassive) + instance->PlasmaFW111 = 1; + + dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n", + instance->PlasmaFW111 ? "1.11" : "new"); + + if (instance->PlasmaFW111) { + iovPtr = (struct IOV_111 *) + ((unsigned char *)ctrl_info + IOV_111_OFFSET); + instance->requestorId = iovPtr->requestorId; + } + } + dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n", + instance->requestorId); + } + + instance->crash_dump_fw_support = + ctrl_info->adapterOperations3.supportCrashDump; + instance->crash_dump_drv_support = + (instance->crash_dump_fw_support && + instance->crash_dump_buf); + if (instance->crash_dump_drv_support) + megasas_set_crash_dump_params(instance, + MR_CRASH_BUF_TURN_OFF); + + else { + if (instance->crash_dump_buf) + dma_free_coherent(&instance->pdev->dev, + CRASH_DMA_BUF_SIZE, + instance->crash_dump_buf, + instance->crash_dump_h); + instance->crash_dump_buf = NULL; + } + + if (instance->snapdump_wait_time) { + megasas_get_snapdump_properties(instance); + dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n", + instance->snapdump_wait_time); + } + + dev_info(&instance->pdev->dev, + "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n", + le16_to_cpu(ctrl_info->pci.vendor_id), + le16_to_cpu(ctrl_info->pci.device_id), + le16_to_cpu(ctrl_info->pci.sub_vendor_id), + le16_to_cpu(ctrl_info->pci.sub_device_id)); + dev_info(&instance->pdev->dev, "unevenspan support : %s\n", + instance->UnevenSpanSupport ? "yes" : "no"); + dev_info(&instance->pdev->dev, "firmware crash dump : %s\n", + instance->crash_dump_drv_support ? "yes" : "no"); + dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n", + instance->use_seqnum_jbod_fp ? "enabled" : "disabled"); + + instance->max_sectors_per_req = instance->max_num_sge * + SGE_BUFFER_SIZE / 512; + if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) + instance->max_sectors_per_req = tmp_sectors; + + /* Check for valid throttlequeuedepth module parameter */ + if (throttlequeuedepth && + throttlequeuedepth <= instance->max_scsi_cmds) + instance->throttlequeuedepth = throttlequeuedepth; + else + instance->throttlequeuedepth = + MEGASAS_THROTTLE_QUEUE_DEPTH; + + if ((resetwaittime < 1) || + (resetwaittime > MEGASAS_RESET_WAIT_TIME)) + resetwaittime = MEGASAS_RESET_WAIT_TIME; + + if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT)) + scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT; + + /* Launch SR-IOV heartbeat timer */ + if (instance->requestorId) { + if (!megasas_sriov_start_heartbeat(instance, 1)) { + megasas_start_timer(instance); + } else { + instance->skip_heartbeat_timer_del = 1; + goto fail_get_ld_pd_list; + } + } + + /* + * Create and start watchdog thread which will monitor + * controller state every 1 sec and trigger OCR when + * it enters fault state + */ + if (instance->adapter_type != MFI_SERIES) + if (megasas_fusion_start_watchdog(instance) != SUCCESS) + goto fail_start_watchdog; + + return 0; + +fail_start_watchdog: + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); +fail_get_ld_pd_list: + instance->instancet->disable_intr(instance); + megasas_destroy_irqs(instance); +fail_init_adapter: + if (instance->msix_vectors) + pci_free_irq_vectors(instance->pdev); + instance->msix_vectors = 0; +fail_alloc_dma_buf: + megasas_free_ctrl_dma_buffers(instance); + megasas_free_ctrl_mem(instance); +fail_ready_state: + iounmap(instance->reg_set); + +fail_ioremap: + pci_release_selected_regions(instance->pdev, 1<<instance->bar); + + dev_err(&instance->pdev->dev, "Failed from %s %d\n", + __func__, __LINE__); + return -EINVAL; +} + +/** + * megasas_release_mfi - Reverses the FW initialization + * @instance: Adapter soft state + */ +static void megasas_release_mfi(struct megasas_instance *instance) +{ + u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); + + if (instance->reply_queue) + dma_free_coherent(&instance->pdev->dev, reply_q_sz, + instance->reply_queue, instance->reply_queue_h); + + megasas_free_cmds(instance); + + iounmap(instance->reg_set); + + pci_release_selected_regions(instance->pdev, 1<<instance->bar); +} + +/** + * megasas_get_seq_num - Gets latest event sequence numbers + * @instance: Adapter soft state + * @eli: FW event log sequence numbers information + * + * FW maintains a log of all events in a non-volatile area. Upper layers would + * usually find out the latest sequence number of the events, the seq number at + * the boot etc. They would "read" all the events below the latest seq number + * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq + * number), they would subsribe to AEN (asynchronous event notification) and + * wait for the events to happen. + */ +static int +megasas_get_seq_num(struct megasas_instance *instance, + struct megasas_evt_log_info *eli) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + struct megasas_evt_log_info *el_info; + dma_addr_t el_info_h = 0; + int ret; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + el_info = dma_alloc_coherent(&instance->pdev->dev, + sizeof(struct megasas_evt_log_info), + &el_info_h, GFP_KERNEL); + if (!el_info) { + megasas_return_cmd(instance, cmd); + return -ENOMEM; + } + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO); + + megasas_set_dma_settings(instance, dcmd, el_info_h, + sizeof(struct megasas_evt_log_info)); + + ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS); + if (ret != DCMD_SUCCESS) { + dev_err(&instance->pdev->dev, "Failed from %s %d\n", + __func__, __LINE__); + goto dcmd_failed; + } + + /* + * Copy the data back into callers buffer + */ + eli->newest_seq_num = el_info->newest_seq_num; + eli->oldest_seq_num = el_info->oldest_seq_num; + eli->clear_seq_num = el_info->clear_seq_num; + eli->shutdown_seq_num = el_info->shutdown_seq_num; + eli->boot_seq_num = el_info->boot_seq_num; + +dcmd_failed: + dma_free_coherent(&instance->pdev->dev, + sizeof(struct megasas_evt_log_info), + el_info, el_info_h); + + megasas_return_cmd(instance, cmd); + + return ret; +} + +/** + * megasas_register_aen - Registers for asynchronous event notification + * @instance: Adapter soft state + * @seq_num: The starting sequence number + * @class_locale_word: Class of the event + * + * This function subscribes for AEN for events beyond the @seq_num. It requests + * to be notified if and only if the event is of type @class_locale + */ +static int +megasas_register_aen(struct megasas_instance *instance, u32 seq_num, + u32 class_locale_word) +{ + int ret_val; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + union megasas_evt_class_locale curr_aen; + union megasas_evt_class_locale prev_aen; + + /* + * If there an AEN pending already (aen_cmd), check if the + * class_locale of that pending AEN is inclusive of the new + * AEN request we currently have. If it is, then we don't have + * to do anything. In other words, whichever events the current + * AEN request is subscribing to, have already been subscribed + * to. + * + * If the old_cmd is _not_ inclusive, then we have to abort + * that command, form a class_locale that is superset of both + * old and current and re-issue to the FW + */ + + curr_aen.word = class_locale_word; + + if (instance->aen_cmd) { + + prev_aen.word = + le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); + + if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || + (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { + dev_info(&instance->pdev->dev, + "%s %d out of range class %d send by application\n", + __func__, __LINE__, curr_aen.members.class); + return 0; + } + + /* + * A class whose enum value is smaller is inclusive of all + * higher values. If a PROGRESS (= -1) was previously + * registered, then a new registration requests for higher + * classes need not be sent to FW. They are automatically + * included. + * + * Locale numbers don't have such hierarchy. They are bitmap + * values + */ + if ((prev_aen.members.class <= curr_aen.members.class) && + !((prev_aen.members.locale & curr_aen.members.locale) ^ + curr_aen.members.locale)) { + /* + * Previously issued event registration includes + * current request. Nothing to do. + */ + return 0; + } else { + curr_aen.members.locale |= prev_aen.members.locale; + + if (prev_aen.members.class < curr_aen.members.class) + curr_aen.members.class = prev_aen.members.class; + + instance->aen_cmd->abort_aen = 1; + ret_val = megasas_issue_blocked_abort_cmd(instance, + instance-> + aen_cmd, 30); + + if (ret_val) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort " + "previous AEN command\n"); + return ret_val; + } + } + } + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return -ENOMEM; + + dcmd = &cmd->frame->dcmd; + + memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); + + /* + * Prepare DCMD for aen registration + */ + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail)); + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT); + dcmd->mbox.w[0] = cpu_to_le32(seq_num); + instance->last_seq_num = seq_num; + dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word); + + megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h, + sizeof(struct megasas_evt_detail)); + + if (instance->aen_cmd != NULL) { + megasas_return_cmd(instance, cmd); + return 0; + } + + /* + * Store reference to the cmd used to register for AEN. When an + * application wants us to register for AEN, we have to abort this + * cmd and re-register with a new EVENT LOCALE supplied by that app + */ + instance->aen_cmd = cmd; + + /* + * Issue the aen registration frame + */ + instance->instancet->issue_dcmd(instance, cmd); + + return 0; +} + +/* megasas_get_target_prop - Send DCMD with below details to firmware. + * + * This DCMD will fetch few properties of LD/system PD defined + * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value. + * + * DCMD send by drivers whenever new target is added to the OS. + * + * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP + * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD. + * 0 = system PD, 1 = LD. + * dcmd.mbox.s[1] - TargetID for LD/system PD. + * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES. + * + * @instance: Adapter soft state + * @sdev: OS provided scsi device + * + * Returns 0 on success non-zero on failure. + */ +int +megasas_get_target_prop(struct megasas_instance *instance, + struct scsi_device *sdev) +{ + int ret; + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + + sdev->id; + + cmd = megasas_get_cmd(instance); + + if (!cmd) { + dev_err(&instance->pdev->dev, + "Failed to get cmd %s\n", __func__); + return -ENOMEM; + } + + dcmd = &cmd->frame->dcmd; + + memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop)); + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev); + + dcmd->mbox.s[1] = cpu_to_le16(targetId); + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0xFF; + dcmd->sge_count = 1; + dcmd->flags = MFI_FRAME_DIR_READ; + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = + cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES)); + dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP); + + megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h, + sizeof(struct MR_TARGET_PROPERTIES)); + + if ((instance->adapter_type != MFI_SERIES) && + !instance->mask_interrupts) + ret = megasas_issue_blocked_cmd(instance, + cmd, MFI_IO_TIMEOUT_SECS); + else + ret = megasas_issue_polled(instance, cmd); + + switch (ret) { + case DCMD_TIMEOUT: + switch (dcmd_timeout_ocr_possible(instance)) { + case INITIATE_OCR: + cmd->flags |= DRV_DCMD_SKIP_REFIRE; + mutex_unlock(&instance->reset_mutex); + megasas_reset_fusion(instance->host, + MFI_IO_TIMEOUT_OCR); + mutex_lock(&instance->reset_mutex); + break; + case KILL_ADAPTER: + megaraid_sas_kill_hba(instance); + break; + case IGNORE_TIMEOUT: + dev_info(&instance->pdev->dev, + "Ignore DCMD timeout: %s %d\n", + __func__, __LINE__); + break; + } + break; + + default: + megasas_return_cmd(instance, cmd); + } + if (ret != DCMD_SUCCESS) + dev_err(&instance->pdev->dev, + "return from %s %d return value %d\n", + __func__, __LINE__, ret); + + return ret; +} + +/** + * megasas_start_aen - Subscribes to AEN during driver load time + * @instance: Adapter soft state + */ +static int megasas_start_aen(struct megasas_instance *instance) +{ + struct megasas_evt_log_info eli; + union megasas_evt_class_locale class_locale; + + /* + * Get the latest sequence number from FW + */ + memset(&eli, 0, sizeof(eli)); + + if (megasas_get_seq_num(instance, &eli)) + return -1; + + /* + * Register AEN with FW for latest sequence number plus 1 + */ + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + + return megasas_register_aen(instance, + le32_to_cpu(eli.newest_seq_num) + 1, + class_locale.word); +} + +/** + * megasas_io_attach - Attaches this driver to SCSI mid-layer + * @instance: Adapter soft state + */ +static int megasas_io_attach(struct megasas_instance *instance) +{ + struct Scsi_Host *host = instance->host; + + /* + * Export parameters required by SCSI mid-layer + */ + host->unique_id = instance->unique_id; + host->can_queue = instance->max_scsi_cmds; + host->this_id = instance->init_id; + host->sg_tablesize = instance->max_num_sge; + + if (instance->fw_support_ieee) + instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; + + /* + * Check if the module parameter value for max_sectors can be used + */ + if (max_sectors && max_sectors < instance->max_sectors_per_req) + instance->max_sectors_per_req = max_sectors; + else { + if (max_sectors) { + if (((instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS1078GEN2) || + (instance->pdev->device == + PCI_DEVICE_ID_LSI_SAS0079GEN2)) && + (max_sectors <= MEGASAS_MAX_SECTORS)) { + instance->max_sectors_per_req = max_sectors; + } else { + dev_info(&instance->pdev->dev, "max_sectors should be > 0" + "and <= %d (or < 1MB for GEN2 controller)\n", + instance->max_sectors_per_req); + } + } + } + + host->max_sectors = instance->max_sectors_per_req; + host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; + host->max_channel = MEGASAS_MAX_CHANNELS - 1; + host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; + host->max_lun = MEGASAS_MAX_LUN; + host->max_cmd_len = 16; + + /* Use shared host tagset only for fusion adaptors + * if there are managed interrupts (smp affinity enabled case). + * Single msix_vectors in kdump, so shared host tag is also disabled. + */ + + host->host_tagset = 0; + host->nr_hw_queues = 1; + + if ((instance->adapter_type != MFI_SERIES) && + (instance->msix_vectors > instance->low_latency_index_start) && + host_tagset_enable && + instance->smp_affinity_enable) { + host->host_tagset = 1; + host->nr_hw_queues = instance->msix_vectors - + instance->low_latency_index_start + instance->iopoll_q_count; + if (instance->iopoll_q_count) + host->nr_maps = 3; + } else { + instance->iopoll_q_count = 0; + } + + dev_info(&instance->pdev->dev, + "Max firmware commands: %d shared with default " + "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds, + host->nr_hw_queues - instance->iopoll_q_count, + instance->iopoll_q_count); + /* + * Notify the mid-layer about the new controller + */ + if (scsi_add_host(host, &instance->pdev->dev)) { + dev_err(&instance->pdev->dev, + "Failed to add host from %s %d\n", + __func__, __LINE__); + return -ENODEV; + } + + return 0; +} + +/** + * megasas_set_dma_mask - Set DMA mask for supported controllers + * + * @instance: Adapter soft state + * Description: + * + * For Ventura, driver/FW will operate in 63bit DMA addresses. + * + * For invader- + * By default, driver/FW will operate in 32bit DMA addresses + * for consistent DMA mapping but if 32 bit consistent + * DMA mask fails, driver will try with 63 bit consistent + * mask provided FW is true 63bit DMA capable + * + * For older controllers(Thunderbolt and MFI based adapters)- + * driver/FW will operate in 32 bit consistent DMA addresses. + */ +static int +megasas_set_dma_mask(struct megasas_instance *instance) +{ + u64 consistent_mask; + struct pci_dev *pdev; + u32 scratch_pad_1; + + pdev = instance->pdev; + consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ? + DMA_BIT_MASK(63) : DMA_BIT_MASK(32); + + if (IS_DMA64) { + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) && + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) + goto fail_set_dma_mask; + + if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) && + (dma_set_coherent_mask(&pdev->dev, consistent_mask) && + dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) { + /* + * If 32 bit DMA mask fails, then try for 64 bit mask + * for FW capable of handling 64 bit DMA. + */ + scratch_pad_1 = megasas_readl + (instance, &instance->reg_set->outbound_scratch_pad_1); + + if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET)) + goto fail_set_dma_mask; + else if (dma_set_mask_and_coherent(&pdev->dev, + DMA_BIT_MASK(63))) + goto fail_set_dma_mask; + } + } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) + goto fail_set_dma_mask; + + if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32)) + instance->consistent_mask_64bit = false; + else + instance->consistent_mask_64bit = true; + + dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n", + ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"), + (instance->consistent_mask_64bit ? "63" : "32")); + + return 0; + +fail_set_dma_mask: + dev_err(&pdev->dev, "Failed to set DMA mask\n"); + return -1; + +} + +/* + * megasas_set_adapter_type - Set adapter type. + * Supported controllers can be divided in + * different categories- + * enum MR_ADAPTER_TYPE { + * MFI_SERIES = 1, + * THUNDERBOLT_SERIES = 2, + * INVADER_SERIES = 3, + * VENTURA_SERIES = 4, + * AERO_SERIES = 5, + * }; + * @instance: Adapter soft state + * return: void + */ +static inline void megasas_set_adapter_type(struct megasas_instance *instance) +{ + if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) && + (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) { + instance->adapter_type = MFI_SERIES; + } else { + switch (instance->pdev->device) { + case PCI_DEVICE_ID_LSI_AERO_10E1: + case PCI_DEVICE_ID_LSI_AERO_10E2: + case PCI_DEVICE_ID_LSI_AERO_10E5: + case PCI_DEVICE_ID_LSI_AERO_10E6: + instance->adapter_type = AERO_SERIES; + break; + case PCI_DEVICE_ID_LSI_VENTURA: + case PCI_DEVICE_ID_LSI_CRUSADER: + case PCI_DEVICE_ID_LSI_HARPOON: + case PCI_DEVICE_ID_LSI_TOMCAT: + case PCI_DEVICE_ID_LSI_VENTURA_4PORT: + case PCI_DEVICE_ID_LSI_CRUSADER_4PORT: + instance->adapter_type = VENTURA_SERIES; + break; + case PCI_DEVICE_ID_LSI_FUSION: + case PCI_DEVICE_ID_LSI_PLASMA: + instance->adapter_type = THUNDERBOLT_SERIES; + break; + case PCI_DEVICE_ID_LSI_INVADER: + case PCI_DEVICE_ID_LSI_INTRUDER: + case PCI_DEVICE_ID_LSI_INTRUDER_24: + case PCI_DEVICE_ID_LSI_CUTLASS_52: + case PCI_DEVICE_ID_LSI_CUTLASS_53: + case PCI_DEVICE_ID_LSI_FURY: + instance->adapter_type = INVADER_SERIES; + break; + default: /* For all other supported controllers */ + instance->adapter_type = MFI_SERIES; + break; + } + } +} + +static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) +{ + instance->producer = dma_alloc_coherent(&instance->pdev->dev, + sizeof(u32), &instance->producer_h, GFP_KERNEL); + instance->consumer = dma_alloc_coherent(&instance->pdev->dev, + sizeof(u32), &instance->consumer_h, GFP_KERNEL); + + if (!instance->producer || !instance->consumer) { + dev_err(&instance->pdev->dev, + "Failed to allocate memory for producer, consumer\n"); + return -1; + } + + *instance->producer = 0; + *instance->consumer = 0; + return 0; +} + +/** + * megasas_alloc_ctrl_mem - Allocate per controller memory for core data + * structures which are not common across MFI + * adapters and fusion adapters. + * For MFI based adapters, allocate producer and + * consumer buffers. For fusion adapters, allocate + * memory for fusion context. + * @instance: Adapter soft state + * return: 0 for SUCCESS + */ +static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) +{ + instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), + GFP_KERNEL); + if (!instance->reply_map) + return -ENOMEM; + + switch (instance->adapter_type) { + case MFI_SERIES: + if (megasas_alloc_mfi_ctrl_mem(instance)) + return -ENOMEM; + break; + case AERO_SERIES: + case VENTURA_SERIES: + case THUNDERBOLT_SERIES: + case INVADER_SERIES: + if (megasas_alloc_fusion_context(instance)) + return -ENOMEM; + break; + } + + return 0; +} + +/* + * megasas_free_ctrl_mem - Free fusion context for fusion adapters and + * producer, consumer buffers for MFI adapters + * + * @instance - Adapter soft instance + * + */ +static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) +{ + kfree(instance->reply_map); + if (instance->adapter_type == MFI_SERIES) { + if (instance->producer) + dma_free_coherent(&instance->pdev->dev, sizeof(u32), + instance->producer, + instance->producer_h); + if (instance->consumer) + dma_free_coherent(&instance->pdev->dev, sizeof(u32), + instance->consumer, + instance->consumer_h); + } else { + megasas_free_fusion_context(instance); + } +} + +/** + * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during + * driver load time + * + * @instance: Adapter soft instance + * + * @return: O for SUCCESS + */ +static inline +int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance) +{ + struct pci_dev *pdev = instance->pdev; + struct fusion_context *fusion = instance->ctrl_context; + + instance->evt_detail = dma_alloc_coherent(&pdev->dev, + sizeof(struct megasas_evt_detail), + &instance->evt_detail_h, GFP_KERNEL); + + if (!instance->evt_detail) { + dev_err(&instance->pdev->dev, + "Failed to allocate event detail buffer\n"); + return -ENOMEM; + } + + if (fusion) { + fusion->ioc_init_request = + dma_alloc_coherent(&pdev->dev, + sizeof(struct MPI2_IOC_INIT_REQUEST), + &fusion->ioc_init_request_phys, + GFP_KERNEL); + + if (!fusion->ioc_init_request) { + dev_err(&pdev->dev, + "Failed to allocate ioc init request\n"); + return -ENOMEM; + } + + instance->snapdump_prop = dma_alloc_coherent(&pdev->dev, + sizeof(struct MR_SNAPDUMP_PROPERTIES), + &instance->snapdump_prop_h, GFP_KERNEL); + + if (!instance->snapdump_prop) + dev_err(&pdev->dev, + "Failed to allocate snapdump properties buffer\n"); + + instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev, + HOST_DEVICE_LIST_SZ, + &instance->host_device_list_buf_h, + GFP_KERNEL); + + if (!instance->host_device_list_buf) { + dev_err(&pdev->dev, + "Failed to allocate targetid list buffer\n"); + return -ENOMEM; + } + + } + + instance->pd_list_buf = + dma_alloc_coherent(&pdev->dev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), + &instance->pd_list_buf_h, GFP_KERNEL); + + if (!instance->pd_list_buf) { + dev_err(&pdev->dev, "Failed to allocate PD list buffer\n"); + return -ENOMEM; + } + + instance->ctrl_info_buf = + dma_alloc_coherent(&pdev->dev, + sizeof(struct megasas_ctrl_info), + &instance->ctrl_info_buf_h, GFP_KERNEL); + + if (!instance->ctrl_info_buf) { + dev_err(&pdev->dev, + "Failed to allocate controller info buffer\n"); + return -ENOMEM; + } + + instance->ld_list_buf = + dma_alloc_coherent(&pdev->dev, + sizeof(struct MR_LD_LIST), + &instance->ld_list_buf_h, GFP_KERNEL); + + if (!instance->ld_list_buf) { + dev_err(&pdev->dev, "Failed to allocate LD list buffer\n"); + return -ENOMEM; + } + + instance->ld_targetid_list_buf = + dma_alloc_coherent(&pdev->dev, + sizeof(struct MR_LD_TARGETID_LIST), + &instance->ld_targetid_list_buf_h, GFP_KERNEL); + + if (!instance->ld_targetid_list_buf) { + dev_err(&pdev->dev, + "Failed to allocate LD targetid list buffer\n"); + return -ENOMEM; + } + + if (!reset_devices) { + instance->system_info_buf = + dma_alloc_coherent(&pdev->dev, + sizeof(struct MR_DRV_SYSTEM_INFO), + &instance->system_info_h, GFP_KERNEL); + instance->pd_info = + dma_alloc_coherent(&pdev->dev, + sizeof(struct MR_PD_INFO), + &instance->pd_info_h, GFP_KERNEL); + instance->tgt_prop = + dma_alloc_coherent(&pdev->dev, + sizeof(struct MR_TARGET_PROPERTIES), + &instance->tgt_prop_h, GFP_KERNEL); + instance->crash_dump_buf = + dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, + &instance->crash_dump_h, GFP_KERNEL); + + if (!instance->system_info_buf) + dev_err(&instance->pdev->dev, + "Failed to allocate system info buffer\n"); + + if (!instance->pd_info) + dev_err(&instance->pdev->dev, + "Failed to allocate pd_info buffer\n"); + + if (!instance->tgt_prop) + dev_err(&instance->pdev->dev, + "Failed to allocate tgt_prop buffer\n"); + + if (!instance->crash_dump_buf) + dev_err(&instance->pdev->dev, + "Failed to allocate crash dump buffer\n"); + } + + return 0; +} + +/* + * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated + * during driver load time + * + * @instance- Adapter soft instance + * + */ +static inline +void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance) +{ + struct pci_dev *pdev = instance->pdev; + struct fusion_context *fusion = instance->ctrl_context; + + if (instance->evt_detail) + dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail), + instance->evt_detail, + instance->evt_detail_h); + + if (fusion && fusion->ioc_init_request) + dma_free_coherent(&pdev->dev, + sizeof(struct MPI2_IOC_INIT_REQUEST), + fusion->ioc_init_request, + fusion->ioc_init_request_phys); + + if (instance->pd_list_buf) + dma_free_coherent(&pdev->dev, + MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), + instance->pd_list_buf, + instance->pd_list_buf_h); + + if (instance->ld_list_buf) + dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST), + instance->ld_list_buf, + instance->ld_list_buf_h); + + if (instance->ld_targetid_list_buf) + dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST), + instance->ld_targetid_list_buf, + instance->ld_targetid_list_buf_h); + + if (instance->ctrl_info_buf) + dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info), + instance->ctrl_info_buf, + instance->ctrl_info_buf_h); + + if (instance->system_info_buf) + dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO), + instance->system_info_buf, + instance->system_info_h); + + if (instance->pd_info) + dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO), + instance->pd_info, instance->pd_info_h); + + if (instance->tgt_prop) + dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES), + instance->tgt_prop, instance->tgt_prop_h); + + if (instance->crash_dump_buf) + dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE, + instance->crash_dump_buf, + instance->crash_dump_h); + + if (instance->snapdump_prop) + dma_free_coherent(&pdev->dev, + sizeof(struct MR_SNAPDUMP_PROPERTIES), + instance->snapdump_prop, + instance->snapdump_prop_h); + + if (instance->host_device_list_buf) + dma_free_coherent(&pdev->dev, + HOST_DEVICE_LIST_SZ, + instance->host_device_list_buf, + instance->host_device_list_buf_h); + +} + +/* + * megasas_init_ctrl_params - Initialize controller's instance + * parameters before FW init + * @instance - Adapter soft instance + * @return - void + */ +static inline void megasas_init_ctrl_params(struct megasas_instance *instance) +{ + instance->fw_crash_state = UNAVAILABLE; + + megasas_poll_wait_aen = 0; + instance->issuepend_done = 1; + atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); + + /* + * Initialize locks and queues + */ + INIT_LIST_HEAD(&instance->cmd_pool); + INIT_LIST_HEAD(&instance->internal_reset_pending_q); + + atomic_set(&instance->fw_outstanding, 0); + atomic64_set(&instance->total_io_count, 0); + + init_waitqueue_head(&instance->int_cmd_wait_q); + init_waitqueue_head(&instance->abort_cmd_wait_q); + + mutex_init(&instance->crashdump_lock); + spin_lock_init(&instance->mfi_pool_lock); + spin_lock_init(&instance->hba_lock); + spin_lock_init(&instance->stream_lock); + spin_lock_init(&instance->completion_lock); + + mutex_init(&instance->reset_mutex); + + if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || + (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) + instance->flag_ieee = 1; + + instance->flag = 0; + instance->unload = 1; + instance->last_time = 0; + instance->disableOnlineCtrlReset = 1; + instance->UnevenSpanSupport = 0; + instance->smp_affinity_enable = smp_affinity_enable ? true : false; + instance->msix_load_balance = false; + + if (instance->adapter_type != MFI_SERIES) + INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); + else + INIT_WORK(&instance->work_init, process_fw_state_change_wq); +} + +/** + * megasas_probe_one - PCI hotplug entry point + * @pdev: PCI device structure + * @id: PCI ids of supported hotplugged adapter + */ +static int megasas_probe_one(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + int rval, pos; + struct Scsi_Host *host; + struct megasas_instance *instance; + u16 control = 0; + + switch (pdev->device) { + case PCI_DEVICE_ID_LSI_AERO_10E0: + case PCI_DEVICE_ID_LSI_AERO_10E3: + case PCI_DEVICE_ID_LSI_AERO_10E4: + case PCI_DEVICE_ID_LSI_AERO_10E7: + dev_err(&pdev->dev, "Adapter is in non secure mode\n"); + return 1; + case PCI_DEVICE_ID_LSI_AERO_10E1: + case PCI_DEVICE_ID_LSI_AERO_10E5: + dev_info(&pdev->dev, "Adapter is in configurable secure mode\n"); + break; + } + + /* Reset MSI-X in the kdump kernel */ + if (reset_devices) { + pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); + if (pos) { + pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS, + &control); + if (control & PCI_MSIX_FLAGS_ENABLE) { + dev_info(&pdev->dev, "resetting MSI-X\n"); + pci_write_config_word(pdev, + pos + PCI_MSIX_FLAGS, + control & + ~PCI_MSIX_FLAGS_ENABLE); + } + } + } + + /* + * PCI prepping: enable device set bus mastering and dma mask + */ + rval = pci_enable_device_mem(pdev); + + if (rval) { + return rval; + } + + pci_set_master(pdev); + + host = scsi_host_alloc(&megasas_template, + sizeof(struct megasas_instance)); + + if (!host) { + dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n"); + goto fail_alloc_instance; + } + + instance = (struct megasas_instance *)host->hostdata; + memset(instance, 0, sizeof(*instance)); + atomic_set(&instance->fw_reset_no_pci_access, 0); + + /* + * Initialize PCI related and misc parameters + */ + instance->pdev = pdev; + instance->host = host; + instance->unique_id = pdev->bus->number << 8 | pdev->devfn; + instance->init_id = MEGASAS_DEFAULT_INIT_ID; + + megasas_set_adapter_type(instance); + + /* + * Initialize MFI Firmware + */ + if (megasas_init_fw(instance)) + goto fail_init_mfi; + + if (instance->requestorId) { + if (instance->PlasmaFW111) { + instance->vf_affiliation_111 = + dma_alloc_coherent(&pdev->dev, + sizeof(struct MR_LD_VF_AFFILIATION_111), + &instance->vf_affiliation_111_h, + GFP_KERNEL); + if (!instance->vf_affiliation_111) + dev_warn(&pdev->dev, "Can't allocate " + "memory for VF affiliation buffer\n"); + } else { + instance->vf_affiliation = + dma_alloc_coherent(&pdev->dev, + (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION), + &instance->vf_affiliation_h, + GFP_KERNEL); + if (!instance->vf_affiliation) + dev_warn(&pdev->dev, "Can't allocate " + "memory for VF affiliation buffer\n"); + } + } + + /* + * Store instance in PCI softstate + */ + pci_set_drvdata(pdev, instance); + + /* + * Add this controller to megasas_mgmt_info structure so that it + * can be exported to management applications + */ + megasas_mgmt_info.count++; + megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; + megasas_mgmt_info.max_index++; + + /* + * Register with SCSI mid-layer + */ + if (megasas_io_attach(instance)) + goto fail_io_attach; + + instance->unload = 0; + /* + * Trigger SCSI to scan our drives + */ + if (!instance->enable_fw_dev_list || + (instance->host_device_list_buf->count > 0)) + scsi_scan_host(host); + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + if (megasas_start_aen(instance)) { + dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n"); + goto fail_start_aen; + } + + megasas_setup_debugfs(instance); + + /* Get current SR-IOV LD/VF affiliation */ + if (instance->requestorId) + megasas_get_ld_vf_affiliation(instance, 1); + + return 0; + +fail_start_aen: + instance->unload = 1; + scsi_remove_host(instance->host); +fail_io_attach: + megasas_mgmt_info.count--; + megasas_mgmt_info.max_index--; + megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; + + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); + + instance->instancet->disable_intr(instance); + megasas_destroy_irqs(instance); + + if (instance->adapter_type != MFI_SERIES) + megasas_release_fusion(instance); + else + megasas_release_mfi(instance); + + if (instance->msix_vectors) + pci_free_irq_vectors(instance->pdev); + instance->msix_vectors = 0; + + if (instance->fw_crash_state != UNAVAILABLE) + megasas_free_host_crash_buffer(instance); + + if (instance->adapter_type != MFI_SERIES) + megasas_fusion_stop_watchdog(instance); +fail_init_mfi: + scsi_host_put(host); +fail_alloc_instance: + pci_disable_device(pdev); + + return -ENODEV; +} + +/** + * megasas_flush_cache - Requests FW to flush all its caches + * @instance: Adapter soft state + */ +static void megasas_flush_cache(struct megasas_instance *instance) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) + return; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return; + + dcmd = &cmd->frame->dcmd; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 0; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = 0; + dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH); + dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; + + if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) + != DCMD_SUCCESS) { + dev_err(&instance->pdev->dev, + "return from %s %d\n", __func__, __LINE__); + return; + } + + megasas_return_cmd(instance, cmd); +} + +/** + * megasas_shutdown_controller - Instructs FW to shutdown the controller + * @instance: Adapter soft state + * @opcode: Shutdown/Hibernate + */ +static void megasas_shutdown_controller(struct megasas_instance *instance, + u32 opcode) +{ + struct megasas_cmd *cmd; + struct megasas_dcmd_frame *dcmd; + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) + return; + + cmd = megasas_get_cmd(instance); + + if (!cmd) + return; + + if (instance->aen_cmd) + megasas_issue_blocked_abort_cmd(instance, + instance->aen_cmd, MFI_IO_TIMEOUT_SECS); + if (instance->map_update_cmd) + megasas_issue_blocked_abort_cmd(instance, + instance->map_update_cmd, MFI_IO_TIMEOUT_SECS); + if (instance->jbod_seq_cmd) + megasas_issue_blocked_abort_cmd(instance, + instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS); + + dcmd = &cmd->frame->dcmd; + + memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); + + dcmd->cmd = MFI_CMD_DCMD; + dcmd->cmd_status = 0x0; + dcmd->sge_count = 0; + dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE); + dcmd->timeout = 0; + dcmd->pad_0 = 0; + dcmd->data_xfer_len = 0; + dcmd->opcode = cpu_to_le32(opcode); + + if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) + != DCMD_SUCCESS) { + dev_err(&instance->pdev->dev, + "return from %s %d\n", __func__, __LINE__); + return; + } + + megasas_return_cmd(instance, cmd); +} + +/** + * megasas_suspend - driver suspend entry point + * @dev: Device structure + */ +static int __maybe_unused +megasas_suspend(struct device *dev) +{ + struct megasas_instance *instance; + + instance = dev_get_drvdata(dev); + + if (!instance) + return 0; + + instance->unload = 1; + + dev_info(dev, "%s is called\n", __func__); + + /* Shutdown SR-IOV heartbeat timer */ + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); + + /* Stop the FW fault detection watchdog */ + if (instance->adapter_type != MFI_SERIES) + megasas_fusion_stop_watchdog(instance); + + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); + + /* cancel the delayed work if this work still in queue */ + if (instance->ev != NULL) { + struct megasas_aen_event *ev = instance->ev; + cancel_delayed_work_sync(&ev->hotplug_work); + instance->ev = NULL; + } + + tasklet_kill(&instance->isr_tasklet); + + pci_set_drvdata(instance->pdev, instance); + instance->instancet->disable_intr(instance); + + megasas_destroy_irqs(instance); + + if (instance->msix_vectors) + pci_free_irq_vectors(instance->pdev); + + return 0; +} + +/** + * megasas_resume- driver resume entry point + * @dev: Device structure + */ +static int __maybe_unused +megasas_resume(struct device *dev) +{ + int rval; + struct Scsi_Host *host; + struct megasas_instance *instance; + u32 status_reg; + + instance = dev_get_drvdata(dev); + + if (!instance) + return 0; + + host = instance->host; + + dev_info(dev, "%s is called\n", __func__); + + /* + * We expect the FW state to be READY + */ + + if (megasas_transition_to_ready(instance, 0)) { + dev_info(&instance->pdev->dev, + "Failed to transition controller to ready from %s!\n", + __func__); + if (instance->adapter_type != MFI_SERIES) { + status_reg = + instance->instancet->read_fw_status_reg(instance); + if (!(status_reg & MFI_RESET_ADAPTER) || + ((megasas_adp_reset_wait_for_ready + (instance, true, 0)) == FAILED)) + goto fail_ready_state; + } else { + atomic_set(&instance->fw_reset_no_pci_access, 1); + instance->instancet->adp_reset + (instance, instance->reg_set); + atomic_set(&instance->fw_reset_no_pci_access, 0); + + /* waiting for about 30 seconds before retry */ + ssleep(30); + + if (megasas_transition_to_ready(instance, 0)) + goto fail_ready_state; + } + + dev_info(&instance->pdev->dev, + "FW restarted successfully from %s!\n", + __func__); + } + if (megasas_set_dma_mask(instance)) + goto fail_set_dma_mask; + + /* + * Initialize MFI Firmware + */ + + atomic_set(&instance->fw_outstanding, 0); + atomic_set(&instance->ldio_outstanding, 0); + + /* Now re-enable MSI-X */ + if (instance->msix_vectors) + megasas_alloc_irq_vectors(instance); + + if (!instance->msix_vectors) { + rval = pci_alloc_irq_vectors(instance->pdev, 1, 1, + PCI_IRQ_LEGACY); + if (rval < 0) + goto fail_reenable_msix; + } + + megasas_setup_reply_map(instance); + + if (instance->adapter_type != MFI_SERIES) { + megasas_reset_reply_desc(instance); + if (megasas_ioc_init_fusion(instance)) { + megasas_free_cmds(instance); + megasas_free_cmds_fusion(instance); + goto fail_init_mfi; + } + if (!megasas_get_map_info(instance)) + megasas_sync_map_info(instance); + } else { + *instance->producer = 0; + *instance->consumer = 0; + if (megasas_issue_init_mfi(instance)) + goto fail_init_mfi; + } + + if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) + goto fail_init_mfi; + + tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, + (unsigned long)instance); + + if (instance->msix_vectors ? + megasas_setup_irqs_msix(instance, 0) : + megasas_setup_irqs_ioapic(instance)) + goto fail_init_mfi; + + if (instance->adapter_type != MFI_SERIES) + megasas_setup_irq_poll(instance); + + /* Re-launch SR-IOV heartbeat timer */ + if (instance->requestorId) { + if (!megasas_sriov_start_heartbeat(instance, 0)) + megasas_start_timer(instance); + else { + instance->skip_heartbeat_timer_del = 1; + goto fail_init_mfi; + } + } + + instance->instancet->enable_intr(instance); + megasas_setup_jbod_map(instance); + instance->unload = 0; + + /* + * Initiate AEN (Asynchronous Event Notification) + */ + if (megasas_start_aen(instance)) + dev_err(&instance->pdev->dev, "Start AEN failed\n"); + + /* Re-launch FW fault watchdog */ + if (instance->adapter_type != MFI_SERIES) + if (megasas_fusion_start_watchdog(instance) != SUCCESS) + goto fail_start_watchdog; + + return 0; + +fail_start_watchdog: + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); +fail_init_mfi: + megasas_free_ctrl_dma_buffers(instance); + megasas_free_ctrl_mem(instance); + scsi_host_put(host); + +fail_reenable_msix: +fail_set_dma_mask: +fail_ready_state: + + return -ENODEV; +} + +static inline int +megasas_wait_for_adapter_operational(struct megasas_instance *instance) +{ + int wait_time = MEGASAS_RESET_WAIT_TIME * 2; + int i; + u8 adp_state; + + for (i = 0; i < wait_time; i++) { + adp_state = atomic_read(&instance->adprecovery); + if ((adp_state == MEGASAS_HBA_OPERATIONAL) || + (adp_state == MEGASAS_HW_CRITICAL_ERROR)) + break; + + if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) + dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n"); + + msleep(1000); + } + + if (adp_state != MEGASAS_HBA_OPERATIONAL) { + dev_info(&instance->pdev->dev, + "%s HBA failed to become operational, adp_state %d\n", + __func__, adp_state); + return 1; + } + + return 0; +} + +/** + * megasas_detach_one - PCI hot"un"plug entry point + * @pdev: PCI device structure + */ +static void megasas_detach_one(struct pci_dev *pdev) +{ + int i; + struct Scsi_Host *host; + struct megasas_instance *instance; + struct fusion_context *fusion; + size_t pd_seq_map_sz; + + instance = pci_get_drvdata(pdev); + + if (!instance) + return; + + host = instance->host; + fusion = instance->ctrl_context; + + /* Shutdown SR-IOV heartbeat timer */ + if (instance->requestorId && !instance->skip_heartbeat_timer_del) + del_timer_sync(&instance->sriov_heartbeat_timer); + + /* Stop the FW fault detection watchdog */ + if (instance->adapter_type != MFI_SERIES) + megasas_fusion_stop_watchdog(instance); + + if (instance->fw_crash_state != UNAVAILABLE) + megasas_free_host_crash_buffer(instance); + scsi_remove_host(instance->host); + instance->unload = 1; + + if (megasas_wait_for_adapter_operational(instance)) + goto skip_firing_dcmds; + + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); + +skip_firing_dcmds: + /* cancel the delayed work if this work still in queue*/ + if (instance->ev != NULL) { + struct megasas_aen_event *ev = instance->ev; + cancel_delayed_work_sync(&ev->hotplug_work); + instance->ev = NULL; + } + + /* cancel all wait events */ + wake_up_all(&instance->int_cmd_wait_q); + + tasklet_kill(&instance->isr_tasklet); + + /* + * Take the instance off the instance array. Note that we will not + * decrement the max_index. We let this array be sparse array + */ + for (i = 0; i < megasas_mgmt_info.max_index; i++) { + if (megasas_mgmt_info.instance[i] == instance) { + megasas_mgmt_info.count--; + megasas_mgmt_info.instance[i] = NULL; + + break; + } + } + + instance->instancet->disable_intr(instance); + + megasas_destroy_irqs(instance); + + if (instance->msix_vectors) + pci_free_irq_vectors(instance->pdev); + + if (instance->adapter_type >= VENTURA_SERIES) { + for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) + kfree(fusion->stream_detect_by_ld[i]); + kfree(fusion->stream_detect_by_ld); + fusion->stream_detect_by_ld = NULL; + } + + + if (instance->adapter_type != MFI_SERIES) { + megasas_release_fusion(instance); + pd_seq_map_sz = + struct_size((struct MR_PD_CFG_SEQ_NUM_SYNC *)0, + seq, MAX_PHYSICAL_DEVICES); + for (i = 0; i < 2 ; i++) { + if (fusion->ld_map[i]) + dma_free_coherent(&instance->pdev->dev, + fusion->max_map_sz, + fusion->ld_map[i], + fusion->ld_map_phys[i]); + if (fusion->ld_drv_map[i]) { + if (is_vmalloc_addr(fusion->ld_drv_map[i])) + vfree(fusion->ld_drv_map[i]); + else + free_pages((ulong)fusion->ld_drv_map[i], + fusion->drv_map_pages); + } + + if (fusion->pd_seq_sync[i]) + dma_free_coherent(&instance->pdev->dev, + pd_seq_map_sz, + fusion->pd_seq_sync[i], + fusion->pd_seq_phys[i]); + } + } else { + megasas_release_mfi(instance); + } + + if (instance->vf_affiliation) + dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) * + sizeof(struct MR_LD_VF_AFFILIATION), + instance->vf_affiliation, + instance->vf_affiliation_h); + + if (instance->vf_affiliation_111) + dma_free_coherent(&pdev->dev, + sizeof(struct MR_LD_VF_AFFILIATION_111), + instance->vf_affiliation_111, + instance->vf_affiliation_111_h); + + if (instance->hb_host_mem) + dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM), + instance->hb_host_mem, + instance->hb_host_mem_h); + + megasas_free_ctrl_dma_buffers(instance); + + megasas_free_ctrl_mem(instance); + + megasas_destroy_debugfs(instance); + + scsi_host_put(host); + + pci_disable_device(pdev); +} + +/** + * megasas_shutdown - Shutdown entry point + * @pdev: PCI device structure + */ +static void megasas_shutdown(struct pci_dev *pdev) +{ + struct megasas_instance *instance = pci_get_drvdata(pdev); + + if (!instance) + return; + + instance->unload = 1; + + if (megasas_wait_for_adapter_operational(instance)) + goto skip_firing_dcmds; + + megasas_flush_cache(instance); + megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); + +skip_firing_dcmds: + instance->instancet->disable_intr(instance); + megasas_destroy_irqs(instance); + + if (instance->msix_vectors) + pci_free_irq_vectors(instance->pdev); +} + +/* + * megasas_mgmt_open - char node "open" entry point + * @inode: char node inode + * @filep: char node file + */ +static int megasas_mgmt_open(struct inode *inode, struct file *filep) +{ + /* + * Allow only those users with admin rights + */ + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + return 0; +} + +/* + * megasas_mgmt_fasync - Async notifier registration from applications + * @fd: char node file descriptor number + * @filep: char node file + * @mode: notifier on/off + * + * This function adds the calling process to a driver global queue. When an + * event occurs, SIGIO will be sent to all processes in this queue. + */ +static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) +{ + int rc; + + mutex_lock(&megasas_async_queue_mutex); + + rc = fasync_helper(fd, filep, mode, &megasas_async_queue); + + mutex_unlock(&megasas_async_queue_mutex); + + if (rc >= 0) { + /* For sanity check when we get ioctl */ + filep->private_data = filep; + return 0; + } + + printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); + + return rc; +} + +/* + * megasas_mgmt_poll - char node "poll" entry point + * @filep: char node file + * @wait: Events to poll for + */ +static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait) +{ + __poll_t mask; + unsigned long flags; + + poll_wait(file, &megasas_poll_wait, wait); + spin_lock_irqsave(&poll_aen_lock, flags); + if (megasas_poll_wait_aen) + mask = (EPOLLIN | EPOLLRDNORM); + else + mask = 0; + megasas_poll_wait_aen = 0; + spin_unlock_irqrestore(&poll_aen_lock, flags); + return mask; +} + +/* + * megasas_set_crash_dump_params_ioctl: + * Send CRASH_DUMP_MODE DCMD to all controllers + * @cmd: MFI command frame + */ + +static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd) +{ + struct megasas_instance *local_instance; + int i, error = 0; + int crash_support; + + crash_support = cmd->frame->dcmd.mbox.w[0]; + + for (i = 0; i < megasas_mgmt_info.max_index; i++) { + local_instance = megasas_mgmt_info.instance[i]; + if (local_instance && local_instance->crash_dump_drv_support) { + if ((atomic_read(&local_instance->adprecovery) == + MEGASAS_HBA_OPERATIONAL) && + !megasas_set_crash_dump_params(local_instance, + crash_support)) { + local_instance->crash_dump_app_support = + crash_support; + dev_info(&local_instance->pdev->dev, + "Application firmware crash " + "dump mode set success\n"); + error = 0; + } else { + dev_info(&local_instance->pdev->dev, + "Application firmware crash " + "dump mode set failed\n"); + error = -1; + } + } + } + return error; +} + +/** + * megasas_mgmt_fw_ioctl - Issues management ioctls to FW + * @instance: Adapter soft state + * @user_ioc: User's ioctl packet + * @ioc: ioctl packet + */ +static int +megasas_mgmt_fw_ioctl(struct megasas_instance *instance, + struct megasas_iocpacket __user * user_ioc, + struct megasas_iocpacket *ioc) +{ + struct megasas_sge64 *kern_sge64 = NULL; + struct megasas_sge32 *kern_sge32 = NULL; + struct megasas_cmd *cmd; + void *kbuff_arr[MAX_IOCTL_SGE]; + dma_addr_t buf_handle = 0; + int error = 0, i; + void *sense = NULL; + dma_addr_t sense_handle; + void *sense_ptr; + u32 opcode = 0; + int ret = DCMD_SUCCESS; + + memset(kbuff_arr, 0, sizeof(kbuff_arr)); + + if (ioc->sge_count > MAX_IOCTL_SGE) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n", + ioc->sge_count, MAX_IOCTL_SGE); + return -EINVAL; + } + + if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) || + ((ioc->frame.hdr.cmd == MFI_CMD_NVME) && + !instance->support_nvme_passthru) || + ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) && + !instance->support_pci_lane_margining)) { + dev_err(&instance->pdev->dev, + "Received invalid ioctl command 0x%x\n", + ioc->frame.hdr.cmd); + return -ENOTSUPP; + } + + cmd = megasas_get_cmd(instance); + if (!cmd) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n"); + return -ENOMEM; + } + + /* + * User's IOCTL packet has 2 frames (maximum). Copy those two + * frames into our cmd's frames. cmd->frame's context will get + * overwritten when we copy from user's frames. So set that value + * alone separately + */ + memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); + cmd->frame->hdr.context = cpu_to_le32(cmd->index); + cmd->frame->hdr.pad_0 = 0; + + cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE); + + if (instance->consistent_mask_64bit) + cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 | + MFI_FRAME_SENSE64)); + else + cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 | + MFI_FRAME_SENSE64)); + + if (cmd->frame->hdr.cmd == MFI_CMD_DCMD) + opcode = le32_to_cpu(cmd->frame->dcmd.opcode); + + if (opcode == MR_DCMD_CTRL_SHUTDOWN) { + mutex_lock(&instance->reset_mutex); + if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) { + megasas_return_cmd(instance, cmd); + mutex_unlock(&instance->reset_mutex); + return -1; + } + mutex_unlock(&instance->reset_mutex); + } + + if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) { + error = megasas_set_crash_dump_params_ioctl(cmd); + megasas_return_cmd(instance, cmd); + return error; + } + + /* + * The management interface between applications and the fw uses + * MFI frames. E.g, RAID configuration changes, LD property changes + * etc are accomplishes through different kinds of MFI frames. The + * driver needs to care only about substituting user buffers with + * kernel buffers in SGLs. The location of SGL is embedded in the + * struct iocpacket itself. + */ + if (instance->consistent_mask_64bit) + kern_sge64 = (struct megasas_sge64 *) + ((unsigned long)cmd->frame + ioc->sgl_off); + else + kern_sge32 = (struct megasas_sge32 *) + ((unsigned long)cmd->frame + ioc->sgl_off); + + /* + * For each user buffer, create a mirror buffer and copy in + */ + for (i = 0; i < ioc->sge_count; i++) { + if (!ioc->sgl[i].iov_len) + continue; + + kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, + ioc->sgl[i].iov_len, + &buf_handle, GFP_KERNEL); + if (!kbuff_arr[i]) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc " + "kernel SGL buffer for IOCTL\n"); + error = -ENOMEM; + goto out; + } + + /* + * We don't change the dma_coherent_mask, so + * dma_alloc_coherent only returns 32bit addresses + */ + if (instance->consistent_mask_64bit) { + kern_sge64[i].phys_addr = cpu_to_le64(buf_handle); + kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len); + } else { + kern_sge32[i].phys_addr = cpu_to_le32(buf_handle); + kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len); + } + + /* + * We created a kernel buffer corresponding to the + * user buffer. Now copy in from the user buffer + */ + if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, + (u32) (ioc->sgl[i].iov_len))) { + error = -EFAULT; + goto out; + } + } + + if (ioc->sense_len) { + /* make sure the pointer is part of the frame */ + if (ioc->sense_off > + (sizeof(union megasas_frame) - sizeof(__le64))) { + error = -EINVAL; + goto out; + } + + sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, + &sense_handle, GFP_KERNEL); + if (!sense) { + error = -ENOMEM; + goto out; + } + + /* always store 64 bits regardless of addressing */ + sense_ptr = (void *)cmd->frame + ioc->sense_off; + put_unaligned_le64(sense_handle, sense_ptr); + } + + /* + * Set the sync_cmd flag so that the ISR knows not to complete this + * cmd to the SCSI mid-layer + */ + cmd->sync_cmd = 1; + + ret = megasas_issue_blocked_cmd(instance, cmd, 0); + switch (ret) { + case DCMD_INIT: + case DCMD_BUSY: + cmd->sync_cmd = 0; + dev_err(&instance->pdev->dev, + "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n", + __func__, __LINE__, cmd->frame->hdr.cmd, opcode, + cmd->cmd_status_drv); + error = -EBUSY; + goto out; + } + + cmd->sync_cmd = 0; + + if (instance->unload == 1) { + dev_info(&instance->pdev->dev, "Driver unload is in progress " + "don't submit data to application\n"); + goto out; + } + /* + * copy out the kernel buffers to user buffers + */ + for (i = 0; i < ioc->sge_count; i++) { + if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], + ioc->sgl[i].iov_len)) { + error = -EFAULT; + goto out; + } + } + + /* + * copy out the sense + */ + if (ioc->sense_len) { + void __user *uptr; + /* + * sense_ptr points to the location that has the user + * sense buffer address + */ + sense_ptr = (void *)ioc->frame.raw + ioc->sense_off; + if (in_compat_syscall()) + uptr = compat_ptr(get_unaligned((compat_uptr_t *) + sense_ptr)); + else + uptr = get_unaligned((void __user **)sense_ptr); + + if (copy_to_user(uptr, sense, ioc->sense_len)) { + dev_err(&instance->pdev->dev, "Failed to copy out to user " + "sense data\n"); + error = -EFAULT; + goto out; + } + } + + /* + * copy the status codes returned by the fw + */ + if (copy_to_user(&user_ioc->frame.hdr.cmd_status, + &cmd->frame->hdr.cmd_status, sizeof(u8))) { + dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n"); + error = -EFAULT; + } + +out: + if (sense) { + dma_free_coherent(&instance->pdev->dev, ioc->sense_len, + sense, sense_handle); + } + + for (i = 0; i < ioc->sge_count; i++) { + if (kbuff_arr[i]) { + if (instance->consistent_mask_64bit) + dma_free_coherent(&instance->pdev->dev, + le32_to_cpu(kern_sge64[i].length), + kbuff_arr[i], + le64_to_cpu(kern_sge64[i].phys_addr)); + else + dma_free_coherent(&instance->pdev->dev, + le32_to_cpu(kern_sge32[i].length), + kbuff_arr[i], + le32_to_cpu(kern_sge32[i].phys_addr)); + kbuff_arr[i] = NULL; + } + } + + megasas_return_cmd(instance, cmd); + return error; +} + +static struct megasas_iocpacket * +megasas_compat_iocpacket_get_user(void __user *arg) +{ + struct megasas_iocpacket *ioc; + struct compat_megasas_iocpacket __user *cioc = arg; + size_t size; + int err = -EFAULT; + int i; + + ioc = kzalloc(sizeof(*ioc), GFP_KERNEL); + if (!ioc) + return ERR_PTR(-ENOMEM); + size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame); + if (copy_from_user(ioc, arg, size)) + goto out; + + for (i = 0; i < MAX_IOCTL_SGE; i++) { + compat_uptr_t iov_base; + + if (get_user(iov_base, &cioc->sgl[i].iov_base) || + get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len)) + goto out; + + ioc->sgl[i].iov_base = compat_ptr(iov_base); + } + + return ioc; +out: + kfree(ioc); + return ERR_PTR(err); +} + +static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) +{ + struct megasas_iocpacket __user *user_ioc = + (struct megasas_iocpacket __user *)arg; + struct megasas_iocpacket *ioc; + struct megasas_instance *instance; + int error; + + if (in_compat_syscall()) + ioc = megasas_compat_iocpacket_get_user(user_ioc); + else + ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket)); + + if (IS_ERR(ioc)) + return PTR_ERR(ioc); + + instance = megasas_lookup_instance(ioc->host_no); + if (!instance) { + error = -ENODEV; + goto out_kfree_ioc; + } + + /* Block ioctls in VF mode */ + if (instance->requestorId && !allow_vf_ioctls) { + error = -ENODEV; + goto out_kfree_ioc; + } + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + dev_err(&instance->pdev->dev, "Controller in crit error\n"); + error = -ENODEV; + goto out_kfree_ioc; + } + + if (instance->unload == 1) { + error = -ENODEV; + goto out_kfree_ioc; + } + + if (down_interruptible(&instance->ioctl_sem)) { + error = -ERESTARTSYS; + goto out_kfree_ioc; + } + + if (megasas_wait_for_adapter_operational(instance)) { + error = -ENODEV; + goto out_up; + } + + error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); +out_up: + up(&instance->ioctl_sem); + +out_kfree_ioc: + kfree(ioc); + return error; +} + +static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) +{ + struct megasas_instance *instance; + struct megasas_aen aen; + int error; + + if (file->private_data != file) { + printk(KERN_DEBUG "megasas: fasync_helper was not " + "called first\n"); + return -EINVAL; + } + + if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) + return -EFAULT; + + instance = megasas_lookup_instance(aen.host_no); + + if (!instance) + return -ENODEV; + + if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { + return -ENODEV; + } + + if (instance->unload == 1) { + return -ENODEV; + } + + if (megasas_wait_for_adapter_operational(instance)) + return -ENODEV; + + mutex_lock(&instance->reset_mutex); + error = megasas_register_aen(instance, aen.seq_num, + aen.class_locale_word); + mutex_unlock(&instance->reset_mutex); + return error; +} + +/** + * megasas_mgmt_ioctl - char node ioctl entry point + * @file: char device file pointer + * @cmd: ioctl command + * @arg: ioctl command arguments address + */ +static long +megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case MEGASAS_IOC_FIRMWARE: + return megasas_mgmt_ioctl_fw(file, arg); + + case MEGASAS_IOC_GET_AEN: + return megasas_mgmt_ioctl_aen(file, arg); + } + + return -ENOTTY; +} + +#ifdef CONFIG_COMPAT +static long +megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + switch (cmd) { + case MEGASAS_IOC_FIRMWARE32: + return megasas_mgmt_ioctl_fw(file, arg); + case MEGASAS_IOC_GET_AEN: + return megasas_mgmt_ioctl_aen(file, arg); + } + + return -ENOTTY; +} +#endif + +/* + * File operations structure for management interface + */ +static const struct file_operations megasas_mgmt_fops = { + .owner = THIS_MODULE, + .open = megasas_mgmt_open, + .fasync = megasas_mgmt_fasync, + .unlocked_ioctl = megasas_mgmt_ioctl, + .poll = megasas_mgmt_poll, +#ifdef CONFIG_COMPAT + .compat_ioctl = megasas_mgmt_compat_ioctl, +#endif + .llseek = noop_llseek, +}; + +static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume); + +/* + * PCI hotplug support registration structure + */ +static struct pci_driver megasas_pci_driver = { + + .name = "megaraid_sas", + .id_table = megasas_pci_table, + .probe = megasas_probe_one, + .remove = megasas_detach_one, + .driver.pm = &megasas_pm_ops, + .shutdown = megasas_shutdown, +}; + +/* + * Sysfs driver attributes + */ +static ssize_t version_show(struct device_driver *dd, char *buf) +{ + return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", + MEGASAS_VERSION); +} +static DRIVER_ATTR_RO(version); + +static ssize_t release_date_show(struct device_driver *dd, char *buf) +{ + return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", + MEGASAS_RELDATE); +} +static DRIVER_ATTR_RO(release_date); + +static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_poll_for_event); +} +static DRIVER_ATTR_RO(support_poll_for_event); + +static ssize_t support_device_change_show(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_device_change); +} +static DRIVER_ATTR_RO(support_device_change); + +static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", megasas_dbg_lvl); +} + +static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf, + size_t count) +{ + int retval = count; + + if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) { + printk(KERN_ERR "megasas: could not set dbg_lvl\n"); + retval = -EINVAL; + } + return retval; +} +static DRIVER_ATTR_RW(dbg_lvl); + +static ssize_t +support_nvme_encapsulation_show(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_nvme_encapsulation); +} + +static DRIVER_ATTR_RO(support_nvme_encapsulation); + +static ssize_t +support_pci_lane_margining_show(struct device_driver *dd, char *buf) +{ + return sprintf(buf, "%u\n", support_pci_lane_margining); +} + +static DRIVER_ATTR_RO(support_pci_lane_margining); + +static inline void megasas_remove_scsi_device(struct scsi_device *sdev) +{ + sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n"); + scsi_remove_device(sdev); + scsi_device_put(sdev); +} + +/** + * megasas_update_device_list - Update the PD and LD device list from FW + * after an AEN event notification + * @instance: Adapter soft state + * @event_type: Indicates type of event (PD or LD event) + * + * @return: Success or failure + * + * Issue DCMDs to Firmware to update the internal device list in driver. + * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination + * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list. + */ +static +int megasas_update_device_list(struct megasas_instance *instance, + int event_type) +{ + int dcmd_ret; + + if (instance->enable_fw_dev_list) { + return megasas_host_device_list_query(instance, false); + } else { + if (event_type & SCAN_PD_CHANNEL) { + dcmd_ret = megasas_get_pd_list(instance); + if (dcmd_ret != DCMD_SUCCESS) + return dcmd_ret; + } + + if (event_type & SCAN_VD_CHANNEL) { + if (!instance->requestorId || + megasas_get_ld_vf_affiliation(instance, 0)) { + return megasas_ld_list_query(instance, + MR_LD_QUERY_TYPE_EXPOSED_TO_HOST); + } + } + } + return DCMD_SUCCESS; +} + +/** + * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer + * after an AEN event notification + * @instance: Adapter soft state + * @scan_type: Indicates type of devices (PD/LD) to add + * @return void + */ +static +void megasas_add_remove_devices(struct megasas_instance *instance, + int scan_type) +{ + int i, j; + u16 pd_index = 0; + u16 ld_index = 0; + u16 channel = 0, id = 0; + struct Scsi_Host *host; + struct scsi_device *sdev1; + struct MR_HOST_DEVICE_LIST *targetid_list = NULL; + struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL; + + host = instance->host; + + if (instance->enable_fw_dev_list) { + targetid_list = instance->host_device_list_buf; + for (i = 0; i < targetid_list->count; i++) { + targetid_entry = &targetid_list->host_device_list[i]; + if (targetid_entry->flags.u.bits.is_sys_pd) { + channel = le16_to_cpu(targetid_entry->target_id) / + MEGASAS_MAX_DEV_PER_CHANNEL; + id = le16_to_cpu(targetid_entry->target_id) % + MEGASAS_MAX_DEV_PER_CHANNEL; + } else { + channel = MEGASAS_MAX_PD_CHANNELS + + (le16_to_cpu(targetid_entry->target_id) / + MEGASAS_MAX_DEV_PER_CHANNEL); + id = le16_to_cpu(targetid_entry->target_id) % + MEGASAS_MAX_DEV_PER_CHANNEL; + } + sdev1 = scsi_device_lookup(host, channel, id, 0); + if (!sdev1) { + scsi_add_device(host, channel, id, 0); + } else { + scsi_device_put(sdev1); + } + } + } + + if (scan_type & SCAN_PD_CHANNEL) { + for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { + for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { + pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j; + sdev1 = scsi_device_lookup(host, i, j, 0); + if (instance->pd_list[pd_index].driveState == + MR_PD_STATE_SYSTEM) { + if (!sdev1) + scsi_add_device(host, i, j, 0); + else + scsi_device_put(sdev1); + } else { + if (sdev1) + megasas_remove_scsi_device(sdev1); + } + } + } + } + + if (scan_type & SCAN_VD_CHANNEL) { + for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { + for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { + ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; + sdev1 = scsi_device_lookup(host, + MEGASAS_MAX_PD_CHANNELS + i, j, 0); + if (instance->ld_ids[ld_index] != 0xff) { + if (!sdev1) + scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0); + else + scsi_device_put(sdev1); + } else { + if (sdev1) + megasas_remove_scsi_device(sdev1); + } + } + } + } + +} + +static void +megasas_aen_polling(struct work_struct *work) +{ + struct megasas_aen_event *ev = + container_of(work, struct megasas_aen_event, hotplug_work.work); + struct megasas_instance *instance = ev->instance; + union megasas_evt_class_locale class_locale; + int event_type = 0; + u32 seq_num; + u16 ld_target_id; + int error; + u8 dcmd_ret = DCMD_SUCCESS; + struct scsi_device *sdev1; + + if (!instance) { + printk(KERN_ERR "invalid instance!\n"); + kfree(ev); + return; + } + + /* Don't run the event workqueue thread if OCR is running */ + mutex_lock(&instance->reset_mutex); + + instance->ev = NULL; + if (instance->evt_detail) { + megasas_decode_evt(instance); + + switch (le32_to_cpu(instance->evt_detail->code)) { + + case MR_EVT_PD_INSERTED: + case MR_EVT_PD_REMOVED: + event_type = SCAN_PD_CHANNEL; + break; + + case MR_EVT_LD_OFFLINE: + case MR_EVT_LD_DELETED: + ld_target_id = instance->evt_detail->args.ld.target_id; + sdev1 = scsi_device_lookup(instance->host, + MEGASAS_MAX_PD_CHANNELS + + (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL), + (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL), + 0); + if (sdev1) + megasas_remove_scsi_device(sdev1); + + event_type = SCAN_VD_CHANNEL; + break; + case MR_EVT_LD_CREATED: + event_type = SCAN_VD_CHANNEL; + break; + + case MR_EVT_CFG_CLEARED: + case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: + case MR_EVT_FOREIGN_CFG_IMPORTED: + case MR_EVT_LD_STATE_CHANGE: + event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL; + dev_info(&instance->pdev->dev, "scanning for scsi%d...\n", + instance->host->host_no); + break; + + case MR_EVT_CTRL_PROP_CHANGED: + dcmd_ret = megasas_get_ctrl_info(instance); + if (dcmd_ret == DCMD_SUCCESS && + instance->snapdump_wait_time) { + megasas_get_snapdump_properties(instance); + dev_info(&instance->pdev->dev, + "Snap dump wait time\t: %d\n", + instance->snapdump_wait_time); + } + break; + default: + event_type = 0; + break; + } + } else { + dev_err(&instance->pdev->dev, "invalid evt_detail!\n"); + mutex_unlock(&instance->reset_mutex); + kfree(ev); + return; + } + + if (event_type) + dcmd_ret = megasas_update_device_list(instance, event_type); + + mutex_unlock(&instance->reset_mutex); + + if (event_type && dcmd_ret == DCMD_SUCCESS) + megasas_add_remove_devices(instance, event_type); + + if (dcmd_ret == DCMD_SUCCESS) + seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1; + else + seq_num = instance->last_seq_num; + + /* Register AEN with FW for latest sequence number plus 1 */ + class_locale.members.reserved = 0; + class_locale.members.locale = MR_EVT_LOCALE_ALL; + class_locale.members.class = MR_EVT_CLASS_DEBUG; + + if (instance->aen_cmd != NULL) { + kfree(ev); + return; + } + + mutex_lock(&instance->reset_mutex); + error = megasas_register_aen(instance, seq_num, + class_locale.word); + if (error) + dev_err(&instance->pdev->dev, + "register aen failed error %x\n", error); + + mutex_unlock(&instance->reset_mutex); + kfree(ev); +} + +/** + * megasas_init - Driver load entry point + */ +static int __init megasas_init(void) +{ + int rval; + + /* + * Booted in kdump kernel, minimize memory footprints by + * disabling few features + */ + if (reset_devices) { + msix_vectors = 1; + rdpq_enable = 0; + dual_qdepth_disable = 1; + poll_queues = 0; + } + + /* + * Announce driver version and other information + */ + pr_info("megasas: %s\n", MEGASAS_VERSION); + + megasas_dbg_lvl = 0; + support_poll_for_event = 2; + support_device_change = 1; + support_nvme_encapsulation = true; + support_pci_lane_margining = true; + + memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); + + /* + * Register character device node + */ + rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); + + if (rval < 0) { + printk(KERN_DEBUG "megasas: failed to open device node\n"); + return rval; + } + + megasas_mgmt_majorno = rval; + + megasas_init_debugfs(); + + /* + * Register ourselves as PCI hotplug module + */ + rval = pci_register_driver(&megasas_pci_driver); + + if (rval) { + printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n"); + goto err_pcidrv; + } + + if ((event_log_level < MFI_EVT_CLASS_DEBUG) || + (event_log_level > MFI_EVT_CLASS_DEAD)) { + pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n"); + event_log_level = MFI_EVT_CLASS_CRITICAL; + } + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_version); + if (rval) + goto err_dcf_attr_ver; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + if (rval) + goto err_dcf_rel_date; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + if (rval) + goto err_dcf_support_poll_for_event; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); + if (rval) + goto err_dcf_dbg_lvl; + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_device_change); + if (rval) + goto err_dcf_support_device_change; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_nvme_encapsulation); + if (rval) + goto err_dcf_support_nvme_encapsulation; + + rval = driver_create_file(&megasas_pci_driver.driver, + &driver_attr_support_pci_lane_margining); + if (rval) + goto err_dcf_support_pci_lane_margining; + + return rval; + +err_dcf_support_pci_lane_margining: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_nvme_encapsulation); + +err_dcf_support_nvme_encapsulation: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_device_change); + +err_dcf_support_device_change: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); +err_dcf_dbg_lvl: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); +err_dcf_support_poll_for_event: + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_release_date); +err_dcf_rel_date: + driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); +err_dcf_attr_ver: + pci_unregister_driver(&megasas_pci_driver); +err_pcidrv: + megasas_exit_debugfs(); + unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); + return rval; +} + +/** + * megasas_exit - Driver unload entry point + */ +static void __exit megasas_exit(void) +{ + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_dbg_lvl); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_poll_for_event); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_device_change); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_release_date); + driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_nvme_encapsulation); + driver_remove_file(&megasas_pci_driver.driver, + &driver_attr_support_pci_lane_margining); + + pci_unregister_driver(&megasas_pci_driver); + megasas_exit_debugfs(); + unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); +} + +module_init(megasas_init); +module_exit(megasas_exit); |