diff options
Diffstat (limited to 'drivers/scsi/myrs.c')
| -rw-r--r-- | drivers/scsi/myrs.c | 3168 |
1 files changed, 3168 insertions, 0 deletions
diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c new file mode 100644 index 000000000..7eb8c39da --- /dev/null +++ b/drivers/scsi/myrs.c @@ -0,0 +1,3168 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers + * + * This driver supports the newer, SCSI-based firmware interface only. + * + * Copyright 2017 Hannes Reinecke, SUSE Linux GmbH <hare@suse.com> + * + * Based on the original DAC960 driver, which has + * Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com> + * Portions Copyright 2002 by Mylex (An IBM Business Unit) + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/raid_class.h> +#include <asm/unaligned.h> +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_tcq.h> +#include "myrs.h" + +static struct raid_template *myrs_raid_template; + +static struct myrs_devstate_name_entry { + enum myrs_devstate state; + char *name; +} myrs_devstate_name_list[] = { + { MYRS_DEVICE_UNCONFIGURED, "Unconfigured" }, + { MYRS_DEVICE_ONLINE, "Online" }, + { MYRS_DEVICE_REBUILD, "Rebuild" }, + { MYRS_DEVICE_MISSING, "Missing" }, + { MYRS_DEVICE_SUSPECTED_CRITICAL, "SuspectedCritical" }, + { MYRS_DEVICE_OFFLINE, "Offline" }, + { MYRS_DEVICE_CRITICAL, "Critical" }, + { MYRS_DEVICE_SUSPECTED_DEAD, "SuspectedDead" }, + { MYRS_DEVICE_COMMANDED_OFFLINE, "CommandedOffline" }, + { MYRS_DEVICE_STANDBY, "Standby" }, + { MYRS_DEVICE_INVALID_STATE, "Invalid" }, +}; + +static char *myrs_devstate_name(enum myrs_devstate state) +{ + struct myrs_devstate_name_entry *entry = myrs_devstate_name_list; + int i; + + for (i = 0; i < ARRAY_SIZE(myrs_devstate_name_list); i++) { + if (entry[i].state == state) + return entry[i].name; + } + return NULL; +} + +static struct myrs_raid_level_name_entry { + enum myrs_raid_level level; + char *name; +} myrs_raid_level_name_list[] = { + { MYRS_RAID_LEVEL0, "RAID0" }, + { MYRS_RAID_LEVEL1, "RAID1" }, + { MYRS_RAID_LEVEL3, "RAID3 right asymmetric parity" }, + { MYRS_RAID_LEVEL5, "RAID5 right asymmetric parity" }, + { MYRS_RAID_LEVEL6, "RAID6" }, + { MYRS_RAID_JBOD, "JBOD" }, + { MYRS_RAID_NEWSPAN, "New Mylex SPAN" }, + { MYRS_RAID_LEVEL3F, "RAID3 fixed parity" }, + { MYRS_RAID_LEVEL3L, "RAID3 left symmetric parity" }, + { MYRS_RAID_SPAN, "Mylex SPAN" }, + { MYRS_RAID_LEVEL5L, "RAID5 left symmetric parity" }, + { MYRS_RAID_LEVELE, "RAIDE (concatenation)" }, + { MYRS_RAID_PHYSICAL, "Physical device" }, +}; + +static char *myrs_raid_level_name(enum myrs_raid_level level) +{ + struct myrs_raid_level_name_entry *entry = myrs_raid_level_name_list; + int i; + + for (i = 0; i < ARRAY_SIZE(myrs_raid_level_name_list); i++) { + if (entry[i].level == level) + return entry[i].name; + } + return NULL; +} + +/* + * myrs_reset_cmd - clears critical fields in struct myrs_cmdblk + */ +static inline void myrs_reset_cmd(struct myrs_cmdblk *cmd_blk) +{ + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + + memset(mbox, 0, sizeof(union myrs_cmd_mbox)); + cmd_blk->status = 0; +} + +/* + * myrs_qcmd - queues Command for DAC960 V2 Series Controllers. + */ +static void myrs_qcmd(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk) +{ + void __iomem *base = cs->io_base; + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + union myrs_cmd_mbox *next_mbox = cs->next_cmd_mbox; + + cs->write_cmd_mbox(next_mbox, mbox); + + if (cs->prev_cmd_mbox1->words[0] == 0 || + cs->prev_cmd_mbox2->words[0] == 0) + cs->get_cmd_mbox(base); + + cs->prev_cmd_mbox2 = cs->prev_cmd_mbox1; + cs->prev_cmd_mbox1 = next_mbox; + + if (++next_mbox > cs->last_cmd_mbox) + next_mbox = cs->first_cmd_mbox; + + cs->next_cmd_mbox = next_mbox; +} + +/* + * myrs_exec_cmd - executes V2 Command and waits for completion. + */ +static void myrs_exec_cmd(struct myrs_hba *cs, + struct myrs_cmdblk *cmd_blk) +{ + DECLARE_COMPLETION_ONSTACK(complete); + unsigned long flags; + + cmd_blk->complete = &complete; + spin_lock_irqsave(&cs->queue_lock, flags); + myrs_qcmd(cs, cmd_blk); + spin_unlock_irqrestore(&cs->queue_lock, flags); + + wait_for_completion(&complete); +} + +/* + * myrs_report_progress - prints progress message + */ +static void myrs_report_progress(struct myrs_hba *cs, unsigned short ldev_num, + unsigned char *msg, unsigned long blocks, + unsigned long size) +{ + shost_printk(KERN_INFO, cs->host, + "Logical Drive %d: %s in Progress: %d%% completed\n", + ldev_num, msg, + (100 * (int)(blocks >> 7)) / (int)(size >> 7)); +} + +/* + * myrs_get_ctlr_info - executes a Controller Information IOCTL Command + */ +static unsigned char myrs_get_ctlr_info(struct myrs_hba *cs) +{ + struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk; + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + dma_addr_t ctlr_info_addr; + union myrs_sgl *sgl; + unsigned char status; + unsigned short ldev_present, ldev_critical, ldev_offline; + + ldev_present = cs->ctlr_info->ldev_present; + ldev_critical = cs->ctlr_info->ldev_critical; + ldev_offline = cs->ctlr_info->ldev_offline; + + ctlr_info_addr = dma_map_single(&cs->pdev->dev, cs->ctlr_info, + sizeof(struct myrs_ctlr_info), + DMA_FROM_DEVICE); + if (dma_mapping_error(&cs->pdev->dev, ctlr_info_addr)) + return MYRS_STATUS_FAILED; + + mutex_lock(&cs->dcmd_mutex); + myrs_reset_cmd(cmd_blk); + mbox->ctlr_info.id = MYRS_DCMD_TAG; + mbox->ctlr_info.opcode = MYRS_CMD_OP_IOCTL; + mbox->ctlr_info.control.dma_ctrl_to_host = true; + mbox->ctlr_info.control.no_autosense = true; + mbox->ctlr_info.dma_size = sizeof(struct myrs_ctlr_info); + mbox->ctlr_info.ctlr_num = 0; + mbox->ctlr_info.ioctl_opcode = MYRS_IOCTL_GET_CTLR_INFO; + sgl = &mbox->ctlr_info.dma_addr; + sgl->sge[0].sge_addr = ctlr_info_addr; + sgl->sge[0].sge_count = mbox->ctlr_info.dma_size; + dev_dbg(&cs->host->shost_gendev, "Sending GetControllerInfo\n"); + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + dma_unmap_single(&cs->pdev->dev, ctlr_info_addr, + sizeof(struct myrs_ctlr_info), DMA_FROM_DEVICE); + if (status == MYRS_STATUS_SUCCESS) { + if (cs->ctlr_info->bg_init_active + + cs->ctlr_info->ldev_init_active + + cs->ctlr_info->pdev_init_active + + cs->ctlr_info->cc_active + + cs->ctlr_info->rbld_active + + cs->ctlr_info->exp_active != 0) + cs->needs_update = true; + if (cs->ctlr_info->ldev_present != ldev_present || + cs->ctlr_info->ldev_critical != ldev_critical || + cs->ctlr_info->ldev_offline != ldev_offline) + shost_printk(KERN_INFO, cs->host, + "Logical drive count changes (%d/%d/%d)\n", + cs->ctlr_info->ldev_critical, + cs->ctlr_info->ldev_offline, + cs->ctlr_info->ldev_present); + } + + return status; +} + +/* + * myrs_get_ldev_info - executes a Logical Device Information IOCTL Command + */ +static unsigned char myrs_get_ldev_info(struct myrs_hba *cs, + unsigned short ldev_num, struct myrs_ldev_info *ldev_info) +{ + struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk; + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + dma_addr_t ldev_info_addr; + struct myrs_ldev_info ldev_info_orig; + union myrs_sgl *sgl; + unsigned char status; + + memcpy(&ldev_info_orig, ldev_info, sizeof(struct myrs_ldev_info)); + ldev_info_addr = dma_map_single(&cs->pdev->dev, ldev_info, + sizeof(struct myrs_ldev_info), + DMA_FROM_DEVICE); + if (dma_mapping_error(&cs->pdev->dev, ldev_info_addr)) + return MYRS_STATUS_FAILED; + + mutex_lock(&cs->dcmd_mutex); + myrs_reset_cmd(cmd_blk); + mbox->ldev_info.id = MYRS_DCMD_TAG; + mbox->ldev_info.opcode = MYRS_CMD_OP_IOCTL; + mbox->ldev_info.control.dma_ctrl_to_host = true; + mbox->ldev_info.control.no_autosense = true; + mbox->ldev_info.dma_size = sizeof(struct myrs_ldev_info); + mbox->ldev_info.ldev.ldev_num = ldev_num; + mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_GET_LDEV_INFO_VALID; + sgl = &mbox->ldev_info.dma_addr; + sgl->sge[0].sge_addr = ldev_info_addr; + sgl->sge[0].sge_count = mbox->ldev_info.dma_size; + dev_dbg(&cs->host->shost_gendev, + "Sending GetLogicalDeviceInfoValid for ldev %d\n", ldev_num); + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + dma_unmap_single(&cs->pdev->dev, ldev_info_addr, + sizeof(struct myrs_ldev_info), DMA_FROM_DEVICE); + if (status == MYRS_STATUS_SUCCESS) { + unsigned short ldev_num = ldev_info->ldev_num; + struct myrs_ldev_info *new = ldev_info; + struct myrs_ldev_info *old = &ldev_info_orig; + unsigned long ldev_size = new->cfg_devsize; + + if (new->dev_state != old->dev_state) { + const char *name; + + name = myrs_devstate_name(new->dev_state); + shost_printk(KERN_INFO, cs->host, + "Logical Drive %d is now %s\n", + ldev_num, name ? name : "Invalid"); + } + if ((new->soft_errs != old->soft_errs) || + (new->cmds_failed != old->cmds_failed) || + (new->deferred_write_errs != old->deferred_write_errs)) + shost_printk(KERN_INFO, cs->host, + "Logical Drive %d Errors: Soft = %d, Failed = %d, Deferred Write = %d\n", + ldev_num, new->soft_errs, + new->cmds_failed, + new->deferred_write_errs); + if (new->bg_init_active) + myrs_report_progress(cs, ldev_num, + "Background Initialization", + new->bg_init_lba, ldev_size); + else if (new->fg_init_active) + myrs_report_progress(cs, ldev_num, + "Foreground Initialization", + new->fg_init_lba, ldev_size); + else if (new->migration_active) + myrs_report_progress(cs, ldev_num, + "Data Migration", + new->migration_lba, ldev_size); + else if (new->patrol_active) + myrs_report_progress(cs, ldev_num, + "Patrol Operation", + new->patrol_lba, ldev_size); + if (old->bg_init_active && !new->bg_init_active) + shost_printk(KERN_INFO, cs->host, + "Logical Drive %d: Background Initialization %s\n", + ldev_num, + (new->ldev_control.ldev_init_done ? + "Completed" : "Failed")); + } + return status; +} + +/* + * myrs_get_pdev_info - executes a "Read Physical Device Information" Command + */ +static unsigned char myrs_get_pdev_info(struct myrs_hba *cs, + unsigned char channel, unsigned char target, unsigned char lun, + struct myrs_pdev_info *pdev_info) +{ + struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk; + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + dma_addr_t pdev_info_addr; + union myrs_sgl *sgl; + unsigned char status; + + pdev_info_addr = dma_map_single(&cs->pdev->dev, pdev_info, + sizeof(struct myrs_pdev_info), + DMA_FROM_DEVICE); + if (dma_mapping_error(&cs->pdev->dev, pdev_info_addr)) + return MYRS_STATUS_FAILED; + + mutex_lock(&cs->dcmd_mutex); + myrs_reset_cmd(cmd_blk); + mbox->pdev_info.opcode = MYRS_CMD_OP_IOCTL; + mbox->pdev_info.id = MYRS_DCMD_TAG; + mbox->pdev_info.control.dma_ctrl_to_host = true; + mbox->pdev_info.control.no_autosense = true; + mbox->pdev_info.dma_size = sizeof(struct myrs_pdev_info); + mbox->pdev_info.pdev.lun = lun; + mbox->pdev_info.pdev.target = target; + mbox->pdev_info.pdev.channel = channel; + mbox->pdev_info.ioctl_opcode = MYRS_IOCTL_GET_PDEV_INFO_VALID; + sgl = &mbox->pdev_info.dma_addr; + sgl->sge[0].sge_addr = pdev_info_addr; + sgl->sge[0].sge_count = mbox->pdev_info.dma_size; + dev_dbg(&cs->host->shost_gendev, + "Sending GetPhysicalDeviceInfoValid for pdev %d:%d:%d\n", + channel, target, lun); + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + dma_unmap_single(&cs->pdev->dev, pdev_info_addr, + sizeof(struct myrs_pdev_info), DMA_FROM_DEVICE); + return status; +} + +/* + * myrs_dev_op - executes a "Device Operation" Command + */ +static unsigned char myrs_dev_op(struct myrs_hba *cs, + enum myrs_ioctl_opcode opcode, enum myrs_opdev opdev) +{ + struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk; + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + unsigned char status; + + mutex_lock(&cs->dcmd_mutex); + myrs_reset_cmd(cmd_blk); + mbox->dev_op.opcode = MYRS_CMD_OP_IOCTL; + mbox->dev_op.id = MYRS_DCMD_TAG; + mbox->dev_op.control.dma_ctrl_to_host = true; + mbox->dev_op.control.no_autosense = true; + mbox->dev_op.ioctl_opcode = opcode; + mbox->dev_op.opdev = opdev; + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + return status; +} + +/* + * myrs_translate_pdev - translates a Physical Device Channel and + * TargetID into a Logical Device. + */ +static unsigned char myrs_translate_pdev(struct myrs_hba *cs, + unsigned char channel, unsigned char target, unsigned char lun, + struct myrs_devmap *devmap) +{ + struct pci_dev *pdev = cs->pdev; + dma_addr_t devmap_addr; + struct myrs_cmdblk *cmd_blk; + union myrs_cmd_mbox *mbox; + union myrs_sgl *sgl; + unsigned char status; + + memset(devmap, 0x0, sizeof(struct myrs_devmap)); + devmap_addr = dma_map_single(&pdev->dev, devmap, + sizeof(struct myrs_devmap), + DMA_FROM_DEVICE); + if (dma_mapping_error(&pdev->dev, devmap_addr)) + return MYRS_STATUS_FAILED; + + mutex_lock(&cs->dcmd_mutex); + cmd_blk = &cs->dcmd_blk; + mbox = &cmd_blk->mbox; + mbox->pdev_info.opcode = MYRS_CMD_OP_IOCTL; + mbox->pdev_info.control.dma_ctrl_to_host = true; + mbox->pdev_info.control.no_autosense = true; + mbox->pdev_info.dma_size = sizeof(struct myrs_devmap); + mbox->pdev_info.pdev.target = target; + mbox->pdev_info.pdev.channel = channel; + mbox->pdev_info.pdev.lun = lun; + mbox->pdev_info.ioctl_opcode = MYRS_IOCTL_XLATE_PDEV_TO_LDEV; + sgl = &mbox->pdev_info.dma_addr; + sgl->sge[0].sge_addr = devmap_addr; + sgl->sge[0].sge_count = mbox->pdev_info.dma_size; + + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + dma_unmap_single(&pdev->dev, devmap_addr, + sizeof(struct myrs_devmap), DMA_FROM_DEVICE); + return status; +} + +/* + * myrs_get_event - executes a Get Event Command + */ +static unsigned char myrs_get_event(struct myrs_hba *cs, + unsigned int event_num, struct myrs_event *event_buf) +{ + struct pci_dev *pdev = cs->pdev; + dma_addr_t event_addr; + struct myrs_cmdblk *cmd_blk = &cs->mcmd_blk; + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + union myrs_sgl *sgl; + unsigned char status; + + event_addr = dma_map_single(&pdev->dev, event_buf, + sizeof(struct myrs_event), DMA_FROM_DEVICE); + if (dma_mapping_error(&pdev->dev, event_addr)) + return MYRS_STATUS_FAILED; + + mbox->get_event.opcode = MYRS_CMD_OP_IOCTL; + mbox->get_event.dma_size = sizeof(struct myrs_event); + mbox->get_event.evnum_upper = event_num >> 16; + mbox->get_event.ctlr_num = 0; + mbox->get_event.ioctl_opcode = MYRS_IOCTL_GET_EVENT; + mbox->get_event.evnum_lower = event_num & 0xFFFF; + sgl = &mbox->get_event.dma_addr; + sgl->sge[0].sge_addr = event_addr; + sgl->sge[0].sge_count = mbox->get_event.dma_size; + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + dma_unmap_single(&pdev->dev, event_addr, + sizeof(struct myrs_event), DMA_FROM_DEVICE); + + return status; +} + +/* + * myrs_get_fwstatus - executes a Get Health Status Command + */ +static unsigned char myrs_get_fwstatus(struct myrs_hba *cs) +{ + struct myrs_cmdblk *cmd_blk = &cs->mcmd_blk; + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + union myrs_sgl *sgl; + unsigned char status = cmd_blk->status; + + myrs_reset_cmd(cmd_blk); + mbox->common.opcode = MYRS_CMD_OP_IOCTL; + mbox->common.id = MYRS_MCMD_TAG; + mbox->common.control.dma_ctrl_to_host = true; + mbox->common.control.no_autosense = true; + mbox->common.dma_size = sizeof(struct myrs_fwstat); + mbox->common.ioctl_opcode = MYRS_IOCTL_GET_HEALTH_STATUS; + sgl = &mbox->common.dma_addr; + sgl->sge[0].sge_addr = cs->fwstat_addr; + sgl->sge[0].sge_count = mbox->ctlr_info.dma_size; + dev_dbg(&cs->host->shost_gendev, "Sending GetHealthStatus\n"); + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + + return status; +} + +/* + * myrs_enable_mmio_mbox - enables the Memory Mailbox Interface + */ +static bool myrs_enable_mmio_mbox(struct myrs_hba *cs, + enable_mbox_t enable_mbox_fn) +{ + void __iomem *base = cs->io_base; + struct pci_dev *pdev = cs->pdev; + union myrs_cmd_mbox *cmd_mbox; + struct myrs_stat_mbox *stat_mbox; + union myrs_cmd_mbox *mbox; + dma_addr_t mbox_addr; + unsigned char status = MYRS_STATUS_FAILED; + + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) + if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { + dev_err(&pdev->dev, "DMA mask out of range\n"); + return false; + } + + /* Temporary dma mapping, used only in the scope of this function */ + mbox = dma_alloc_coherent(&pdev->dev, sizeof(union myrs_cmd_mbox), + &mbox_addr, GFP_KERNEL); + if (dma_mapping_error(&pdev->dev, mbox_addr)) + return false; + + /* These are the base addresses for the command memory mailbox array */ + cs->cmd_mbox_size = MYRS_MAX_CMD_MBOX * sizeof(union myrs_cmd_mbox); + cmd_mbox = dma_alloc_coherent(&pdev->dev, cs->cmd_mbox_size, + &cs->cmd_mbox_addr, GFP_KERNEL); + if (dma_mapping_error(&pdev->dev, cs->cmd_mbox_addr)) { + dev_err(&pdev->dev, "Failed to map command mailbox\n"); + goto out_free; + } + cs->first_cmd_mbox = cmd_mbox; + cmd_mbox += MYRS_MAX_CMD_MBOX - 1; + cs->last_cmd_mbox = cmd_mbox; + cs->next_cmd_mbox = cs->first_cmd_mbox; + cs->prev_cmd_mbox1 = cs->last_cmd_mbox; + cs->prev_cmd_mbox2 = cs->last_cmd_mbox - 1; + + /* These are the base addresses for the status memory mailbox array */ + cs->stat_mbox_size = MYRS_MAX_STAT_MBOX * sizeof(struct myrs_stat_mbox); + stat_mbox = dma_alloc_coherent(&pdev->dev, cs->stat_mbox_size, + &cs->stat_mbox_addr, GFP_KERNEL); + if (dma_mapping_error(&pdev->dev, cs->stat_mbox_addr)) { + dev_err(&pdev->dev, "Failed to map status mailbox\n"); + goto out_free; + } + + cs->first_stat_mbox = stat_mbox; + stat_mbox += MYRS_MAX_STAT_MBOX - 1; + cs->last_stat_mbox = stat_mbox; + cs->next_stat_mbox = cs->first_stat_mbox; + + cs->fwstat_buf = dma_alloc_coherent(&pdev->dev, + sizeof(struct myrs_fwstat), + &cs->fwstat_addr, GFP_KERNEL); + if (dma_mapping_error(&pdev->dev, cs->fwstat_addr)) { + dev_err(&pdev->dev, "Failed to map firmware health buffer\n"); + cs->fwstat_buf = NULL; + goto out_free; + } + cs->ctlr_info = kzalloc(sizeof(struct myrs_ctlr_info), GFP_KERNEL); + if (!cs->ctlr_info) + goto out_free; + + cs->event_buf = kzalloc(sizeof(struct myrs_event), GFP_KERNEL); + if (!cs->event_buf) + goto out_free; + + /* Enable the Memory Mailbox Interface. */ + memset(mbox, 0, sizeof(union myrs_cmd_mbox)); + mbox->set_mbox.id = 1; + mbox->set_mbox.opcode = MYRS_CMD_OP_IOCTL; + mbox->set_mbox.control.no_autosense = true; + mbox->set_mbox.first_cmd_mbox_size_kb = + (MYRS_MAX_CMD_MBOX * sizeof(union myrs_cmd_mbox)) >> 10; + mbox->set_mbox.first_stat_mbox_size_kb = + (MYRS_MAX_STAT_MBOX * sizeof(struct myrs_stat_mbox)) >> 10; + mbox->set_mbox.second_cmd_mbox_size_kb = 0; + mbox->set_mbox.second_stat_mbox_size_kb = 0; + mbox->set_mbox.sense_len = 0; + mbox->set_mbox.ioctl_opcode = MYRS_IOCTL_SET_MEM_MBOX; + mbox->set_mbox.fwstat_buf_size_kb = 1; + mbox->set_mbox.fwstat_buf_addr = cs->fwstat_addr; + mbox->set_mbox.first_cmd_mbox_addr = cs->cmd_mbox_addr; + mbox->set_mbox.first_stat_mbox_addr = cs->stat_mbox_addr; + status = enable_mbox_fn(base, mbox_addr); + +out_free: + dma_free_coherent(&pdev->dev, sizeof(union myrs_cmd_mbox), + mbox, mbox_addr); + if (status != MYRS_STATUS_SUCCESS) + dev_err(&pdev->dev, "Failed to enable mailbox, status %X\n", + status); + return (status == MYRS_STATUS_SUCCESS); +} + +/* + * myrs_get_config - reads the Configuration Information + */ +static int myrs_get_config(struct myrs_hba *cs) +{ + struct myrs_ctlr_info *info = cs->ctlr_info; + struct Scsi_Host *shost = cs->host; + unsigned char status; + unsigned char model[20]; + unsigned char fw_version[12]; + int i, model_len; + + /* Get data into dma-able area, then copy into permanent location */ + mutex_lock(&cs->cinfo_mutex); + status = myrs_get_ctlr_info(cs); + mutex_unlock(&cs->cinfo_mutex); + if (status != MYRS_STATUS_SUCCESS) { + shost_printk(KERN_ERR, shost, + "Failed to get controller information\n"); + return -ENODEV; + } + + /* Initialize the Controller Model Name and Full Model Name fields. */ + model_len = sizeof(info->ctlr_name); + if (model_len > sizeof(model)-1) + model_len = sizeof(model)-1; + memcpy(model, info->ctlr_name, model_len); + model_len--; + while (model[model_len] == ' ' || model[model_len] == '\0') + model_len--; + model[++model_len] = '\0'; + strcpy(cs->model_name, "DAC960 "); + strcat(cs->model_name, model); + /* Initialize the Controller Firmware Version field. */ + sprintf(fw_version, "%d.%02d-%02d", + info->fw_major_version, info->fw_minor_version, + info->fw_turn_number); + if (info->fw_major_version == 6 && + info->fw_minor_version == 0 && + info->fw_turn_number < 1) { + shost_printk(KERN_WARNING, shost, + "FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n" + "STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n" + "PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n", + fw_version); + return -ENODEV; + } + /* Initialize the Controller Channels and Targets. */ + shost->max_channel = info->physchan_present + info->virtchan_present; + shost->max_id = info->max_targets[0]; + for (i = 1; i < 16; i++) { + if (!info->max_targets[i]) + continue; + if (shost->max_id < info->max_targets[i]) + shost->max_id = info->max_targets[i]; + } + + /* + * Initialize the Controller Queue Depth, Driver Queue Depth, + * Logical Drive Count, Maximum Blocks per Command, Controller + * Scatter/Gather Limit, and Driver Scatter/Gather Limit. + * The Driver Queue Depth must be at most three less than + * the Controller Queue Depth; tag '1' is reserved for + * direct commands, and tag '2' for monitoring commands. + */ + shost->can_queue = info->max_tcq - 3; + if (shost->can_queue > MYRS_MAX_CMD_MBOX - 3) + shost->can_queue = MYRS_MAX_CMD_MBOX - 3; + shost->max_sectors = info->max_transfer_size; + shost->sg_tablesize = info->max_sge; + if (shost->sg_tablesize > MYRS_SG_LIMIT) + shost->sg_tablesize = MYRS_SG_LIMIT; + + shost_printk(KERN_INFO, shost, + "Configuring %s PCI RAID Controller\n", model); + shost_printk(KERN_INFO, shost, + " Firmware Version: %s, Channels: %d, Memory Size: %dMB\n", + fw_version, info->physchan_present, info->mem_size_mb); + + shost_printk(KERN_INFO, shost, + " Controller Queue Depth: %d, Maximum Blocks per Command: %d\n", + shost->can_queue, shost->max_sectors); + + shost_printk(KERN_INFO, shost, + " Driver Queue Depth: %d, Scatter/Gather Limit: %d of %d Segments\n", + shost->can_queue, shost->sg_tablesize, MYRS_SG_LIMIT); + for (i = 0; i < info->physchan_max; i++) { + if (!info->max_targets[i]) + continue; + shost_printk(KERN_INFO, shost, + " Device Channel %d: max %d devices\n", + i, info->max_targets[i]); + } + shost_printk(KERN_INFO, shost, + " Physical: %d/%d channels, %d disks, %d devices\n", + info->physchan_present, info->physchan_max, + info->pdisk_present, info->pdev_present); + + shost_printk(KERN_INFO, shost, + " Logical: %d/%d channels, %d disks\n", + info->virtchan_present, info->virtchan_max, + info->ldev_present); + return 0; +} + +/* + * myrs_log_event - prints a Controller Event message + */ +static struct { + int ev_code; + unsigned char *ev_msg; +} myrs_ev_list[] = { + /* Physical Device Events (0x0000 - 0x007F) */ + { 0x0001, "P Online" }, + { 0x0002, "P Standby" }, + { 0x0005, "P Automatic Rebuild Started" }, + { 0x0006, "P Manual Rebuild Started" }, + { 0x0007, "P Rebuild Completed" }, + { 0x0008, "P Rebuild Cancelled" }, + { 0x0009, "P Rebuild Failed for Unknown Reasons" }, + { 0x000A, "P Rebuild Failed due to New Physical Device" }, + { 0x000B, "P Rebuild Failed due to Logical Drive Failure" }, + { 0x000C, "S Offline" }, + { 0x000D, "P Found" }, + { 0x000E, "P Removed" }, + { 0x000F, "P Unconfigured" }, + { 0x0010, "P Expand Capacity Started" }, + { 0x0011, "P Expand Capacity Completed" }, + { 0x0012, "P Expand Capacity Failed" }, + { 0x0013, "P Command Timed Out" }, + { 0x0014, "P Command Aborted" }, + { 0x0015, "P Command Retried" }, + { 0x0016, "P Parity Error" }, + { 0x0017, "P Soft Error" }, + { 0x0018, "P Miscellaneous Error" }, + { 0x0019, "P Reset" }, + { 0x001A, "P Active Spare Found" }, + { 0x001B, "P Warm Spare Found" }, + { 0x001C, "S Sense Data Received" }, + { 0x001D, "P Initialization Started" }, + { 0x001E, "P Initialization Completed" }, + { 0x001F, "P Initialization Failed" }, + { 0x0020, "P Initialization Cancelled" }, + { 0x0021, "P Failed because Write Recovery Failed" }, + { 0x0022, "P Failed because SCSI Bus Reset Failed" }, + { 0x0023, "P Failed because of Double Check Condition" }, + { 0x0024, "P Failed because Device Cannot Be Accessed" }, + { 0x0025, "P Failed because of Gross Error on SCSI Processor" }, + { 0x0026, "P Failed because of Bad Tag from Device" }, + { 0x0027, "P Failed because of Command Timeout" }, + { 0x0028, "P Failed because of System Reset" }, + { 0x0029, "P Failed because of Busy Status or Parity Error" }, + { 0x002A, "P Failed because Host Set Device to Failed State" }, + { 0x002B, "P Failed because of Selection Timeout" }, + { 0x002C, "P Failed because of SCSI Bus Phase Error" }, + { 0x002D, "P Failed because Device Returned Unknown Status" }, + { 0x002E, "P Failed because Device Not Ready" }, + { 0x002F, "P Failed because Device Not Found at Startup" }, + { 0x0030, "P Failed because COD Write Operation Failed" }, + { 0x0031, "P Failed because BDT Write Operation Failed" }, + { 0x0039, "P Missing at Startup" }, + { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" }, + { 0x003C, "P Temporarily Offline Device Automatically Made Online" }, + { 0x003D, "P Standby Rebuild Started" }, + /* Logical Device Events (0x0080 - 0x00FF) */ + { 0x0080, "M Consistency Check Started" }, + { 0x0081, "M Consistency Check Completed" }, + { 0x0082, "M Consistency Check Cancelled" }, + { 0x0083, "M Consistency Check Completed With Errors" }, + { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" }, + { 0x0085, "M Consistency Check Failed due to Physical Device Failure" }, + { 0x0086, "L Offline" }, + { 0x0087, "L Critical" }, + { 0x0088, "L Online" }, + { 0x0089, "M Automatic Rebuild Started" }, + { 0x008A, "M Manual Rebuild Started" }, + { 0x008B, "M Rebuild Completed" }, + { 0x008C, "M Rebuild Cancelled" }, + { 0x008D, "M Rebuild Failed for Unknown Reasons" }, + { 0x008E, "M Rebuild Failed due to New Physical Device" }, + { 0x008F, "M Rebuild Failed due to Logical Drive Failure" }, + { 0x0090, "M Initialization Started" }, + { 0x0091, "M Initialization Completed" }, + { 0x0092, "M Initialization Cancelled" }, + { 0x0093, "M Initialization Failed" }, + { 0x0094, "L Found" }, + { 0x0095, "L Deleted" }, + { 0x0096, "M Expand Capacity Started" }, + { 0x0097, "M Expand Capacity Completed" }, + { 0x0098, "M Expand Capacity Failed" }, + { 0x0099, "L Bad Block Found" }, + { 0x009A, "L Size Changed" }, + { 0x009B, "L Type Changed" }, + { 0x009C, "L Bad Data Block Found" }, + { 0x009E, "L Read of Data Block in BDT" }, + { 0x009F, "L Write Back Data for Disk Block Lost" }, + { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" }, + { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" }, + { 0x00A2, "L Standby Rebuild Started" }, + /* Fault Management Events (0x0100 - 0x017F) */ + { 0x0140, "E Fan %d Failed" }, + { 0x0141, "E Fan %d OK" }, + { 0x0142, "E Fan %d Not Present" }, + { 0x0143, "E Power Supply %d Failed" }, + { 0x0144, "E Power Supply %d OK" }, + { 0x0145, "E Power Supply %d Not Present" }, + { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" }, + { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" }, + { 0x0148, "E Temperature Sensor %d Temperature Normal" }, + { 0x0149, "E Temperature Sensor %d Not Present" }, + { 0x014A, "E Enclosure Management Unit %d Access Critical" }, + { 0x014B, "E Enclosure Management Unit %d Access OK" }, + { 0x014C, "E Enclosure Management Unit %d Access Offline" }, + /* Controller Events (0x0180 - 0x01FF) */ + { 0x0181, "C Cache Write Back Error" }, + { 0x0188, "C Battery Backup Unit Found" }, + { 0x0189, "C Battery Backup Unit Charge Level Low" }, + { 0x018A, "C Battery Backup Unit Charge Level OK" }, + { 0x0193, "C Installation Aborted" }, + { 0x0195, "C Battery Backup Unit Physically Removed" }, + { 0x0196, "C Memory Error During Warm Boot" }, + { 0x019E, "C Memory Soft ECC Error Corrected" }, + { 0x019F, "C Memory Hard ECC Error Corrected" }, + { 0x01A2, "C Battery Backup Unit Failed" }, + { 0x01AB, "C Mirror Race Recovery Failed" }, + { 0x01AC, "C Mirror Race on Critical Drive" }, + /* Controller Internal Processor Events */ + { 0x0380, "C Internal Controller Hung" }, + { 0x0381, "C Internal Controller Firmware Breakpoint" }, + { 0x0390, "C Internal Controller i960 Processor Specific Error" }, + { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" }, + { 0, "" } +}; + +static void myrs_log_event(struct myrs_hba *cs, struct myrs_event *ev) +{ + unsigned char msg_buf[MYRS_LINE_BUFFER_SIZE]; + int ev_idx = 0, ev_code; + unsigned char ev_type, *ev_msg; + struct Scsi_Host *shost = cs->host; + struct scsi_device *sdev; + struct scsi_sense_hdr sshdr = {0}; + unsigned char sense_info[4]; + unsigned char cmd_specific[4]; + + if (ev->ev_code == 0x1C) { + if (!scsi_normalize_sense(ev->sense_data, 40, &sshdr)) { + memset(&sshdr, 0x0, sizeof(sshdr)); + memset(sense_info, 0x0, sizeof(sense_info)); + memset(cmd_specific, 0x0, sizeof(cmd_specific)); + } else { + memcpy(sense_info, &ev->sense_data[3], 4); + memcpy(cmd_specific, &ev->sense_data[7], 4); + } + } + if (sshdr.sense_key == VENDOR_SPECIFIC && + (sshdr.asc == 0x80 || sshdr.asc == 0x81)) + ev->ev_code = ((sshdr.asc - 0x80) << 8 | sshdr.ascq); + while (true) { + ev_code = myrs_ev_list[ev_idx].ev_code; + if (ev_code == ev->ev_code || ev_code == 0) + break; + ev_idx++; + } + ev_type = myrs_ev_list[ev_idx].ev_msg[0]; + ev_msg = &myrs_ev_list[ev_idx].ev_msg[2]; + if (ev_code == 0) { + shost_printk(KERN_WARNING, shost, + "Unknown Controller Event Code %04X\n", + ev->ev_code); + return; + } + switch (ev_type) { + case 'P': + sdev = scsi_device_lookup(shost, ev->channel, + ev->target, 0); + sdev_printk(KERN_INFO, sdev, "event %d: Physical Device %s\n", + ev->ev_seq, ev_msg); + if (sdev && sdev->hostdata && + sdev->channel < cs->ctlr_info->physchan_present) { + struct myrs_pdev_info *pdev_info = sdev->hostdata; + + switch (ev->ev_code) { + case 0x0001: + case 0x0007: + pdev_info->dev_state = MYRS_DEVICE_ONLINE; + break; + case 0x0002: + pdev_info->dev_state = MYRS_DEVICE_STANDBY; + break; + case 0x000C: + pdev_info->dev_state = MYRS_DEVICE_OFFLINE; + break; + case 0x000E: + pdev_info->dev_state = MYRS_DEVICE_MISSING; + break; + case 0x000F: + pdev_info->dev_state = MYRS_DEVICE_UNCONFIGURED; + break; + } + } + break; + case 'L': + shost_printk(KERN_INFO, shost, + "event %d: Logical Drive %d %s\n", + ev->ev_seq, ev->lun, ev_msg); + cs->needs_update = true; + break; + case 'M': + shost_printk(KERN_INFO, shost, + "event %d: Logical Drive %d %s\n", + ev->ev_seq, ev->lun, ev_msg); + cs->needs_update = true; + break; + case 'S': + if (sshdr.sense_key == NO_SENSE || + (sshdr.sense_key == NOT_READY && + sshdr.asc == 0x04 && (sshdr.ascq == 0x01 || + sshdr.ascq == 0x02))) + break; + shost_printk(KERN_INFO, shost, + "event %d: Physical Device %d:%d %s\n", + ev->ev_seq, ev->channel, ev->target, ev_msg); + shost_printk(KERN_INFO, shost, + "Physical Device %d:%d Sense Key = %X, ASC = %02X, ASCQ = %02X\n", + ev->channel, ev->target, + sshdr.sense_key, sshdr.asc, sshdr.ascq); + shost_printk(KERN_INFO, shost, + "Physical Device %d:%d Sense Information = %02X%02X%02X%02X %02X%02X%02X%02X\n", + ev->channel, ev->target, + sense_info[0], sense_info[1], + sense_info[2], sense_info[3], + cmd_specific[0], cmd_specific[1], + cmd_specific[2], cmd_specific[3]); + break; + case 'E': + if (cs->disable_enc_msg) + break; + sprintf(msg_buf, ev_msg, ev->lun); + shost_printk(KERN_INFO, shost, "event %d: Enclosure %d %s\n", + ev->ev_seq, ev->target, msg_buf); + break; + case 'C': + shost_printk(KERN_INFO, shost, "event %d: Controller %s\n", + ev->ev_seq, ev_msg); + break; + default: + shost_printk(KERN_INFO, shost, + "event %d: Unknown Event Code %04X\n", + ev->ev_seq, ev->ev_code); + break; + } +} + +/* + * SCSI sysfs interface functions + */ +static ssize_t raid_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + int ret; + + if (!sdev->hostdata) + return snprintf(buf, 16, "Unknown\n"); + + if (sdev->channel >= cs->ctlr_info->physchan_present) { + struct myrs_ldev_info *ldev_info = sdev->hostdata; + const char *name; + + name = myrs_devstate_name(ldev_info->dev_state); + if (name) + ret = snprintf(buf, 32, "%s\n", name); + else + ret = snprintf(buf, 32, "Invalid (%02X)\n", + ldev_info->dev_state); + } else { + struct myrs_pdev_info *pdev_info; + const char *name; + + pdev_info = sdev->hostdata; + name = myrs_devstate_name(pdev_info->dev_state); + if (name) + ret = snprintf(buf, 32, "%s\n", name); + else + ret = snprintf(buf, 32, "Invalid (%02X)\n", + pdev_info->dev_state); + } + return ret; +} + +static ssize_t raid_state_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_cmdblk *cmd_blk; + union myrs_cmd_mbox *mbox; + enum myrs_devstate new_state; + unsigned short ldev_num; + unsigned char status; + + if (!strncmp(buf, "offline", 7) || + !strncmp(buf, "kill", 4)) + new_state = MYRS_DEVICE_OFFLINE; + else if (!strncmp(buf, "online", 6)) + new_state = MYRS_DEVICE_ONLINE; + else if (!strncmp(buf, "standby", 7)) + new_state = MYRS_DEVICE_STANDBY; + else + return -EINVAL; + + if (sdev->channel < cs->ctlr_info->physchan_present) { + struct myrs_pdev_info *pdev_info = sdev->hostdata; + struct myrs_devmap *pdev_devmap = + (struct myrs_devmap *)&pdev_info->rsvd13; + + if (pdev_info->dev_state == new_state) { + sdev_printk(KERN_INFO, sdev, + "Device already in %s\n", + myrs_devstate_name(new_state)); + return count; + } + status = myrs_translate_pdev(cs, sdev->channel, sdev->id, + sdev->lun, pdev_devmap); + if (status != MYRS_STATUS_SUCCESS) + return -ENXIO; + ldev_num = pdev_devmap->ldev_num; + } else { + struct myrs_ldev_info *ldev_info = sdev->hostdata; + + if (ldev_info->dev_state == new_state) { + sdev_printk(KERN_INFO, sdev, + "Device already in %s\n", + myrs_devstate_name(new_state)); + return count; + } + ldev_num = ldev_info->ldev_num; + } + mutex_lock(&cs->dcmd_mutex); + cmd_blk = &cs->dcmd_blk; + myrs_reset_cmd(cmd_blk); + mbox = &cmd_blk->mbox; + mbox->common.opcode = MYRS_CMD_OP_IOCTL; + mbox->common.id = MYRS_DCMD_TAG; + mbox->common.control.dma_ctrl_to_host = true; + mbox->common.control.no_autosense = true; + mbox->set_devstate.ioctl_opcode = MYRS_IOCTL_SET_DEVICE_STATE; + mbox->set_devstate.state = new_state; + mbox->set_devstate.ldev.ldev_num = ldev_num; + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + if (status == MYRS_STATUS_SUCCESS) { + if (sdev->channel < cs->ctlr_info->physchan_present) { + struct myrs_pdev_info *pdev_info = sdev->hostdata; + + pdev_info->dev_state = new_state; + } else { + struct myrs_ldev_info *ldev_info = sdev->hostdata; + + ldev_info->dev_state = new_state; + } + sdev_printk(KERN_INFO, sdev, + "Set device state to %s\n", + myrs_devstate_name(new_state)); + return count; + } + sdev_printk(KERN_INFO, sdev, + "Failed to set device state to %s, status 0x%02x\n", + myrs_devstate_name(new_state), status); + return -EINVAL; +} +static DEVICE_ATTR_RW(raid_state); + +static ssize_t raid_level_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + const char *name = NULL; + + if (!sdev->hostdata) + return snprintf(buf, 16, "Unknown\n"); + + if (sdev->channel >= cs->ctlr_info->physchan_present) { + struct myrs_ldev_info *ldev_info; + + ldev_info = sdev->hostdata; + name = myrs_raid_level_name(ldev_info->raid_level); + if (!name) + return snprintf(buf, 32, "Invalid (%02X)\n", + ldev_info->dev_state); + + } else + name = myrs_raid_level_name(MYRS_RAID_PHYSICAL); + + return snprintf(buf, 32, "%s\n", name); +} +static DEVICE_ATTR_RO(raid_level); + +static ssize_t rebuild_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_ldev_info *ldev_info; + unsigned short ldev_num; + unsigned char status; + + if (sdev->channel < cs->ctlr_info->physchan_present) + return snprintf(buf, 32, "physical device - not rebuilding\n"); + + ldev_info = sdev->hostdata; + ldev_num = ldev_info->ldev_num; + status = myrs_get_ldev_info(cs, ldev_num, ldev_info); + if (status != MYRS_STATUS_SUCCESS) { + sdev_printk(KERN_INFO, sdev, + "Failed to get device information, status 0x%02x\n", + status); + return -EIO; + } + if (ldev_info->rbld_active) { + return snprintf(buf, 32, "rebuilding block %zu of %zu\n", + (size_t)ldev_info->rbld_lba, + (size_t)ldev_info->cfg_devsize); + } else + return snprintf(buf, 32, "not rebuilding\n"); +} + +static ssize_t rebuild_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_ldev_info *ldev_info; + struct myrs_cmdblk *cmd_blk; + union myrs_cmd_mbox *mbox; + unsigned short ldev_num; + unsigned char status; + int rebuild, ret; + + if (sdev->channel < cs->ctlr_info->physchan_present) + return -EINVAL; + + ldev_info = sdev->hostdata; + if (!ldev_info) + return -ENXIO; + ldev_num = ldev_info->ldev_num; + + ret = kstrtoint(buf, 0, &rebuild); + if (ret) + return ret; + + status = myrs_get_ldev_info(cs, ldev_num, ldev_info); + if (status != MYRS_STATUS_SUCCESS) { + sdev_printk(KERN_INFO, sdev, + "Failed to get device information, status 0x%02x\n", + status); + return -EIO; + } + + if (rebuild && ldev_info->rbld_active) { + sdev_printk(KERN_INFO, sdev, + "Rebuild Not Initiated; already in progress\n"); + return -EALREADY; + } + if (!rebuild && !ldev_info->rbld_active) { + sdev_printk(KERN_INFO, sdev, + "Rebuild Not Cancelled; no rebuild in progress\n"); + return count; + } + + mutex_lock(&cs->dcmd_mutex); + cmd_blk = &cs->dcmd_blk; + myrs_reset_cmd(cmd_blk); + mbox = &cmd_blk->mbox; + mbox->common.opcode = MYRS_CMD_OP_IOCTL; + mbox->common.id = MYRS_DCMD_TAG; + mbox->common.control.dma_ctrl_to_host = true; + mbox->common.control.no_autosense = true; + if (rebuild) { + mbox->ldev_info.ldev.ldev_num = ldev_num; + mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_RBLD_DEVICE_START; + } else { + mbox->ldev_info.ldev.ldev_num = ldev_num; + mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_RBLD_DEVICE_STOP; + } + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + if (status) { + sdev_printk(KERN_INFO, sdev, + "Rebuild Not %s, status 0x%02x\n", + rebuild ? "Initiated" : "Cancelled", status); + ret = -EIO; + } else { + sdev_printk(KERN_INFO, sdev, "Rebuild %s\n", + rebuild ? "Initiated" : "Cancelled"); + ret = count; + } + + return ret; +} +static DEVICE_ATTR_RW(rebuild); + +static ssize_t consistency_check_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_ldev_info *ldev_info; + unsigned short ldev_num; + + if (sdev->channel < cs->ctlr_info->physchan_present) + return snprintf(buf, 32, "physical device - not checking\n"); + + ldev_info = sdev->hostdata; + if (!ldev_info) + return -ENXIO; + ldev_num = ldev_info->ldev_num; + myrs_get_ldev_info(cs, ldev_num, ldev_info); + if (ldev_info->cc_active) + return snprintf(buf, 32, "checking block %zu of %zu\n", + (size_t)ldev_info->cc_lba, + (size_t)ldev_info->cfg_devsize); + else + return snprintf(buf, 32, "not checking\n"); +} + +static ssize_t consistency_check_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_ldev_info *ldev_info; + struct myrs_cmdblk *cmd_blk; + union myrs_cmd_mbox *mbox; + unsigned short ldev_num; + unsigned char status; + int check, ret; + + if (sdev->channel < cs->ctlr_info->physchan_present) + return -EINVAL; + + ldev_info = sdev->hostdata; + if (!ldev_info) + return -ENXIO; + ldev_num = ldev_info->ldev_num; + + ret = kstrtoint(buf, 0, &check); + if (ret) + return ret; + + status = myrs_get_ldev_info(cs, ldev_num, ldev_info); + if (status != MYRS_STATUS_SUCCESS) { + sdev_printk(KERN_INFO, sdev, + "Failed to get device information, status 0x%02x\n", + status); + return -EIO; + } + if (check && ldev_info->cc_active) { + sdev_printk(KERN_INFO, sdev, + "Consistency Check Not Initiated; " + "already in progress\n"); + return -EALREADY; + } + if (!check && !ldev_info->cc_active) { + sdev_printk(KERN_INFO, sdev, + "Consistency Check Not Cancelled; " + "check not in progress\n"); + return count; + } + + mutex_lock(&cs->dcmd_mutex); + cmd_blk = &cs->dcmd_blk; + myrs_reset_cmd(cmd_blk); + mbox = &cmd_blk->mbox; + mbox->common.opcode = MYRS_CMD_OP_IOCTL; + mbox->common.id = MYRS_DCMD_TAG; + mbox->common.control.dma_ctrl_to_host = true; + mbox->common.control.no_autosense = true; + if (check) { + mbox->cc.ldev.ldev_num = ldev_num; + mbox->cc.ioctl_opcode = MYRS_IOCTL_CC_START; + mbox->cc.restore_consistency = true; + mbox->cc.initialized_area_only = false; + } else { + mbox->cc.ldev.ldev_num = ldev_num; + mbox->cc.ioctl_opcode = MYRS_IOCTL_CC_STOP; + } + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + if (status != MYRS_STATUS_SUCCESS) { + sdev_printk(KERN_INFO, sdev, + "Consistency Check Not %s, status 0x%02x\n", + check ? "Initiated" : "Cancelled", status); + ret = -EIO; + } else { + sdev_printk(KERN_INFO, sdev, "Consistency Check %s\n", + check ? "Initiated" : "Cancelled"); + ret = count; + } + + return ret; +} +static DEVICE_ATTR_RW(consistency_check); + +static struct attribute *myrs_sdev_attrs[] = { + &dev_attr_consistency_check.attr, + &dev_attr_rebuild.attr, + &dev_attr_raid_state.attr, + &dev_attr_raid_level.attr, + NULL, +}; + +ATTRIBUTE_GROUPS(myrs_sdev); + +static ssize_t serial_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + char serial[17]; + + memcpy(serial, cs->ctlr_info->serial_number, 16); + serial[16] = '\0'; + return snprintf(buf, 16, "%s\n", serial); +} +static DEVICE_ATTR_RO(serial); + +static ssize_t ctlr_num_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + + return snprintf(buf, 20, "%d\n", cs->host->host_no); +} +static DEVICE_ATTR_RO(ctlr_num); + +static struct myrs_cpu_type_tbl { + enum myrs_cpu_type type; + char *name; +} myrs_cpu_type_names[] = { + { MYRS_CPUTYPE_i960CA, "i960CA" }, + { MYRS_CPUTYPE_i960RD, "i960RD" }, + { MYRS_CPUTYPE_i960RN, "i960RN" }, + { MYRS_CPUTYPE_i960RP, "i960RP" }, + { MYRS_CPUTYPE_NorthBay, "NorthBay" }, + { MYRS_CPUTYPE_StrongArm, "StrongARM" }, + { MYRS_CPUTYPE_i960RM, "i960RM" }, +}; + +static ssize_t processor_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + struct myrs_cpu_type_tbl *tbl; + const char *first_processor = NULL; + const char *second_processor = NULL; + struct myrs_ctlr_info *info = cs->ctlr_info; + ssize_t ret; + int i; + + if (info->cpu[0].cpu_count) { + tbl = myrs_cpu_type_names; + for (i = 0; i < ARRAY_SIZE(myrs_cpu_type_names); i++) { + if (tbl[i].type == info->cpu[0].cpu_type) { + first_processor = tbl[i].name; + break; + } + } + } + if (info->cpu[1].cpu_count) { + tbl = myrs_cpu_type_names; + for (i = 0; i < ARRAY_SIZE(myrs_cpu_type_names); i++) { + if (tbl[i].type == info->cpu[1].cpu_type) { + second_processor = tbl[i].name; + break; + } + } + } + if (first_processor && second_processor) + ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n" + "2: %s (%s, %d cpus)\n", + info->cpu[0].cpu_name, + first_processor, info->cpu[0].cpu_count, + info->cpu[1].cpu_name, + second_processor, info->cpu[1].cpu_count); + else if (first_processor && !second_processor) + ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n2: absent\n", + info->cpu[0].cpu_name, + first_processor, info->cpu[0].cpu_count); + else if (!first_processor && second_processor) + ret = snprintf(buf, 64, "1: absent\n2: %s (%s, %d cpus)\n", + info->cpu[1].cpu_name, + second_processor, info->cpu[1].cpu_count); + else + ret = snprintf(buf, 64, "1: absent\n2: absent\n"); + + return ret; +} +static DEVICE_ATTR_RO(processor); + +static ssize_t model_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + + return snprintf(buf, 28, "%s\n", cs->model_name); +} +static DEVICE_ATTR_RO(model); + +static ssize_t ctlr_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + + return snprintf(buf, 4, "%d\n", cs->ctlr_info->ctlr_type); +} +static DEVICE_ATTR_RO(ctlr_type); + +static ssize_t cache_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + + return snprintf(buf, 8, "%d MB\n", cs->ctlr_info->cache_size_mb); +} +static DEVICE_ATTR_RO(cache_size); + +static ssize_t firmware_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + + return snprintf(buf, 16, "%d.%02d-%02d\n", + cs->ctlr_info->fw_major_version, + cs->ctlr_info->fw_minor_version, + cs->ctlr_info->fw_turn_number); +} +static DEVICE_ATTR_RO(firmware); + +static ssize_t discovery_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + struct myrs_cmdblk *cmd_blk; + union myrs_cmd_mbox *mbox; + unsigned char status; + + mutex_lock(&cs->dcmd_mutex); + cmd_blk = &cs->dcmd_blk; + myrs_reset_cmd(cmd_blk); + mbox = &cmd_blk->mbox; + mbox->common.opcode = MYRS_CMD_OP_IOCTL; + mbox->common.id = MYRS_DCMD_TAG; + mbox->common.control.dma_ctrl_to_host = true; + mbox->common.control.no_autosense = true; + mbox->common.ioctl_opcode = MYRS_IOCTL_START_DISCOVERY; + myrs_exec_cmd(cs, cmd_blk); + status = cmd_blk->status; + mutex_unlock(&cs->dcmd_mutex); + if (status != MYRS_STATUS_SUCCESS) { + shost_printk(KERN_INFO, shost, + "Discovery Not Initiated, status %02X\n", + status); + return -EINVAL; + } + shost_printk(KERN_INFO, shost, "Discovery Initiated\n"); + cs->next_evseq = 0; + cs->needs_update = true; + queue_delayed_work(cs->work_q, &cs->monitor_work, 1); + flush_delayed_work(&cs->monitor_work); + shost_printk(KERN_INFO, shost, "Discovery Completed\n"); + + return count; +} +static DEVICE_ATTR_WO(discovery); + +static ssize_t flush_cache_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + unsigned char status; + + status = myrs_dev_op(cs, MYRS_IOCTL_FLUSH_DEVICE_DATA, + MYRS_RAID_CONTROLLER); + if (status == MYRS_STATUS_SUCCESS) { + shost_printk(KERN_INFO, shost, "Cache Flush Completed\n"); + return count; + } + shost_printk(KERN_INFO, shost, + "Cache Flush failed, status 0x%02x\n", status); + return -EIO; +} +static DEVICE_ATTR_WO(flush_cache); + +static ssize_t disable_enclosure_messages_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct myrs_hba *cs = shost_priv(shost); + + return snprintf(buf, 3, "%d\n", cs->disable_enc_msg); +} + +static ssize_t disable_enclosure_messages_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + int value, ret; + + ret = kstrtoint(buf, 0, &value); + if (ret) + return ret; + + if (value > 2) + return -EINVAL; + + cs->disable_enc_msg = value; + return count; +} +static DEVICE_ATTR_RW(disable_enclosure_messages); + +static struct attribute *myrs_shost_attrs[] = { + &dev_attr_serial.attr, + &dev_attr_ctlr_num.attr, + &dev_attr_processor.attr, + &dev_attr_model.attr, + &dev_attr_ctlr_type.attr, + &dev_attr_cache_size.attr, + &dev_attr_firmware.attr, + &dev_attr_discovery.attr, + &dev_attr_flush_cache.attr, + &dev_attr_disable_enclosure_messages.attr, + NULL, +}; + +ATTRIBUTE_GROUPS(myrs_shost); + +/* + * SCSI midlayer interface + */ +static int myrs_host_reset(struct scsi_cmnd *scmd) +{ + struct Scsi_Host *shost = scmd->device->host; + struct myrs_hba *cs = shost_priv(shost); + + cs->reset(cs->io_base); + return SUCCESS; +} + +static void myrs_mode_sense(struct myrs_hba *cs, struct scsi_cmnd *scmd, + struct myrs_ldev_info *ldev_info) +{ + unsigned char modes[32], *mode_pg; + bool dbd; + size_t mode_len; + + dbd = (scmd->cmnd[1] & 0x08) == 0x08; + if (dbd) { + mode_len = 24; + mode_pg = &modes[4]; + } else { + mode_len = 32; + mode_pg = &modes[12]; + } + memset(modes, 0, sizeof(modes)); + modes[0] = mode_len - 1; + modes[2] = 0x10; /* Enable FUA */ + if (ldev_info->ldev_control.wce == MYRS_LOGICALDEVICE_RO) + modes[2] |= 0x80; + if (!dbd) { + unsigned char *block_desc = &modes[4]; + + modes[3] = 8; + put_unaligned_be32(ldev_info->cfg_devsize, &block_desc[0]); + put_unaligned_be32(ldev_info->devsize_bytes, &block_desc[5]); + } + mode_pg[0] = 0x08; + mode_pg[1] = 0x12; + if (ldev_info->ldev_control.rce == MYRS_READCACHE_DISABLED) + mode_pg[2] |= 0x01; + if (ldev_info->ldev_control.wce == MYRS_WRITECACHE_ENABLED || + ldev_info->ldev_control.wce == MYRS_INTELLIGENT_WRITECACHE_ENABLED) + mode_pg[2] |= 0x04; + if (ldev_info->cacheline_size) { + mode_pg[2] |= 0x08; + put_unaligned_be16(1 << ldev_info->cacheline_size, + &mode_pg[14]); + } + + scsi_sg_copy_from_buffer(scmd, modes, mode_len); +} + +static int myrs_queuecommand(struct Scsi_Host *shost, + struct scsi_cmnd *scmd) +{ + struct request *rq = scsi_cmd_to_rq(scmd); + struct myrs_hba *cs = shost_priv(shost); + struct myrs_cmdblk *cmd_blk = scsi_cmd_priv(scmd); + union myrs_cmd_mbox *mbox = &cmd_blk->mbox; + struct scsi_device *sdev = scmd->device; + union myrs_sgl *hw_sge; + dma_addr_t sense_addr; + struct scatterlist *sgl; + unsigned long flags, timeout; + int nsge; + + if (!scmd->device->hostdata) { + scmd->result = (DID_NO_CONNECT << 16); + scsi_done(scmd); + return 0; + } + + switch (scmd->cmnd[0]) { + case REPORT_LUNS: + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x20, 0x0); + scsi_done(scmd); + return 0; + case MODE_SENSE: + if (scmd->device->channel >= cs->ctlr_info->physchan_present) { + struct myrs_ldev_info *ldev_info = sdev->hostdata; + + if ((scmd->cmnd[2] & 0x3F) != 0x3F && + (scmd->cmnd[2] & 0x3F) != 0x08) { + /* Illegal request, invalid field in CDB */ + scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0); + } else { + myrs_mode_sense(cs, scmd, ldev_info); + scmd->result = (DID_OK << 16); + } + scsi_done(scmd); + return 0; + } + break; + } + + myrs_reset_cmd(cmd_blk); + cmd_blk->sense = dma_pool_alloc(cs->sense_pool, GFP_ATOMIC, + &sense_addr); + if (!cmd_blk->sense) + return SCSI_MLQUEUE_HOST_BUSY; + cmd_blk->sense_addr = sense_addr; + + timeout = rq->timeout; + if (scmd->cmd_len <= 10) { + if (scmd->device->channel >= cs->ctlr_info->physchan_present) { + struct myrs_ldev_info *ldev_info = sdev->hostdata; + + mbox->SCSI_10.opcode = MYRS_CMD_OP_SCSI_10; + mbox->SCSI_10.pdev.lun = ldev_info->lun; + mbox->SCSI_10.pdev.target = ldev_info->target; + mbox->SCSI_10.pdev.channel = ldev_info->channel; + mbox->SCSI_10.pdev.ctlr = 0; + } else { + mbox->SCSI_10.opcode = MYRS_CMD_OP_SCSI_10_PASSTHRU; + mbox->SCSI_10.pdev.lun = sdev->lun; + mbox->SCSI_10.pdev.target = sdev->id; + mbox->SCSI_10.pdev.channel = sdev->channel; + } + mbox->SCSI_10.id = rq->tag + 3; + mbox->SCSI_10.control.dma_ctrl_to_host = + (scmd->sc_data_direction == DMA_FROM_DEVICE); + if (rq->cmd_flags & REQ_FUA) + mbox->SCSI_10.control.fua = true; + mbox->SCSI_10.dma_size = scsi_bufflen(scmd); + mbox->SCSI_10.sense_addr = cmd_blk->sense_addr; + mbox->SCSI_10.sense_len = MYRS_SENSE_SIZE; + mbox->SCSI_10.cdb_len = scmd->cmd_len; + if (timeout > 60) { + mbox->SCSI_10.tmo.tmo_scale = MYRS_TMO_SCALE_MINUTES; + mbox->SCSI_10.tmo.tmo_val = timeout / 60; + } else { + mbox->SCSI_10.tmo.tmo_scale = MYRS_TMO_SCALE_SECONDS; + mbox->SCSI_10.tmo.tmo_val = timeout; + } + memcpy(&mbox->SCSI_10.cdb, scmd->cmnd, scmd->cmd_len); + hw_sge = &mbox->SCSI_10.dma_addr; + cmd_blk->dcdb = NULL; + } else { + dma_addr_t dcdb_dma; + + cmd_blk->dcdb = dma_pool_alloc(cs->dcdb_pool, GFP_ATOMIC, + &dcdb_dma); + if (!cmd_blk->dcdb) { + dma_pool_free(cs->sense_pool, cmd_blk->sense, + cmd_blk->sense_addr); + cmd_blk->sense = NULL; + cmd_blk->sense_addr = 0; + return SCSI_MLQUEUE_HOST_BUSY; + } + cmd_blk->dcdb_dma = dcdb_dma; + if (scmd->device->channel >= cs->ctlr_info->physchan_present) { + struct myrs_ldev_info *ldev_info = sdev->hostdata; + + mbox->SCSI_255.opcode = MYRS_CMD_OP_SCSI_256; + mbox->SCSI_255.pdev.lun = ldev_info->lun; + mbox->SCSI_255.pdev.target = ldev_info->target; + mbox->SCSI_255.pdev.channel = ldev_info->channel; + mbox->SCSI_255.pdev.ctlr = 0; + } else { + mbox->SCSI_255.opcode = MYRS_CMD_OP_SCSI_255_PASSTHRU; + mbox->SCSI_255.pdev.lun = sdev->lun; + mbox->SCSI_255.pdev.target = sdev->id; + mbox->SCSI_255.pdev.channel = sdev->channel; + } + mbox->SCSI_255.id = rq->tag + 3; + mbox->SCSI_255.control.dma_ctrl_to_host = + (scmd->sc_data_direction == DMA_FROM_DEVICE); + if (rq->cmd_flags & REQ_FUA) + mbox->SCSI_255.control.fua = true; + mbox->SCSI_255.dma_size = scsi_bufflen(scmd); + mbox->SCSI_255.sense_addr = cmd_blk->sense_addr; + mbox->SCSI_255.sense_len = MYRS_SENSE_SIZE; + mbox->SCSI_255.cdb_len = scmd->cmd_len; + mbox->SCSI_255.cdb_addr = cmd_blk->dcdb_dma; + if (timeout > 60) { + mbox->SCSI_255.tmo.tmo_scale = MYRS_TMO_SCALE_MINUTES; + mbox->SCSI_255.tmo.tmo_val = timeout / 60; + } else { + mbox->SCSI_255.tmo.tmo_scale = MYRS_TMO_SCALE_SECONDS; + mbox->SCSI_255.tmo.tmo_val = timeout; + } + memcpy(cmd_blk->dcdb, scmd->cmnd, scmd->cmd_len); + hw_sge = &mbox->SCSI_255.dma_addr; + } + if (scmd->sc_data_direction == DMA_NONE) + goto submit; + nsge = scsi_dma_map(scmd); + if (nsge == 1) { + sgl = scsi_sglist(scmd); + hw_sge->sge[0].sge_addr = (u64)sg_dma_address(sgl); + hw_sge->sge[0].sge_count = (u64)sg_dma_len(sgl); + } else { + struct myrs_sge *hw_sgl; + dma_addr_t hw_sgl_addr; + int i; + + if (nsge > 2) { + hw_sgl = dma_pool_alloc(cs->sg_pool, GFP_ATOMIC, + &hw_sgl_addr); + if (WARN_ON(!hw_sgl)) { + if (cmd_blk->dcdb) { + dma_pool_free(cs->dcdb_pool, + cmd_blk->dcdb, + cmd_blk->dcdb_dma); + cmd_blk->dcdb = NULL; + cmd_blk->dcdb_dma = 0; + } + dma_pool_free(cs->sense_pool, + cmd_blk->sense, + cmd_blk->sense_addr); + cmd_blk->sense = NULL; + cmd_blk->sense_addr = 0; + return SCSI_MLQUEUE_HOST_BUSY; + } + cmd_blk->sgl = hw_sgl; + cmd_blk->sgl_addr = hw_sgl_addr; + if (scmd->cmd_len <= 10) + mbox->SCSI_10.control.add_sge_mem = true; + else + mbox->SCSI_255.control.add_sge_mem = true; + hw_sge->ext.sge0_len = nsge; + hw_sge->ext.sge0_addr = cmd_blk->sgl_addr; + } else + hw_sgl = hw_sge->sge; + + scsi_for_each_sg(scmd, sgl, nsge, i) { + if (WARN_ON(!hw_sgl)) { + scsi_dma_unmap(scmd); + scmd->result = (DID_ERROR << 16); + scsi_done(scmd); + return 0; + } + hw_sgl->sge_addr = (u64)sg_dma_address(sgl); + hw_sgl->sge_count = (u64)sg_dma_len(sgl); + hw_sgl++; + } + } +submit: + spin_lock_irqsave(&cs->queue_lock, flags); + myrs_qcmd(cs, cmd_blk); + spin_unlock_irqrestore(&cs->queue_lock, flags); + + return 0; +} + +static unsigned short myrs_translate_ldev(struct myrs_hba *cs, + struct scsi_device *sdev) +{ + unsigned short ldev_num; + unsigned int chan_offset = + sdev->channel - cs->ctlr_info->physchan_present; + + ldev_num = sdev->id + chan_offset * sdev->host->max_id; + + return ldev_num; +} + +static int myrs_slave_alloc(struct scsi_device *sdev) +{ + struct myrs_hba *cs = shost_priv(sdev->host); + unsigned char status; + + if (sdev->channel > sdev->host->max_channel) + return 0; + + if (sdev->channel >= cs->ctlr_info->physchan_present) { + struct myrs_ldev_info *ldev_info; + unsigned short ldev_num; + + if (sdev->lun > 0) + return -ENXIO; + + ldev_num = myrs_translate_ldev(cs, sdev); + + ldev_info = kzalloc(sizeof(*ldev_info), GFP_KERNEL); + if (!ldev_info) + return -ENOMEM; + + status = myrs_get_ldev_info(cs, ldev_num, ldev_info); + if (status != MYRS_STATUS_SUCCESS) { + sdev->hostdata = NULL; + kfree(ldev_info); + } else { + enum raid_level level; + + dev_dbg(&sdev->sdev_gendev, + "Logical device mapping %d:%d:%d -> %d\n", + ldev_info->channel, ldev_info->target, + ldev_info->lun, ldev_info->ldev_num); + + sdev->hostdata = ldev_info; + switch (ldev_info->raid_level) { + case MYRS_RAID_LEVEL0: + level = RAID_LEVEL_LINEAR; + break; + case MYRS_RAID_LEVEL1: + level = RAID_LEVEL_1; + break; + case MYRS_RAID_LEVEL3: + case MYRS_RAID_LEVEL3F: + case MYRS_RAID_LEVEL3L: + level = RAID_LEVEL_3; + break; + case MYRS_RAID_LEVEL5: + case MYRS_RAID_LEVEL5L: + level = RAID_LEVEL_5; + break; + case MYRS_RAID_LEVEL6: + level = RAID_LEVEL_6; + break; + case MYRS_RAID_LEVELE: + case MYRS_RAID_NEWSPAN: + case MYRS_RAID_SPAN: + level = RAID_LEVEL_LINEAR; + break; + case MYRS_RAID_JBOD: + level = RAID_LEVEL_JBOD; + break; + default: + level = RAID_LEVEL_UNKNOWN; + break; + } + raid_set_level(myrs_raid_template, + &sdev->sdev_gendev, level); + if (ldev_info->dev_state != MYRS_DEVICE_ONLINE) { + const char *name; + + name = myrs_devstate_name(ldev_info->dev_state); + sdev_printk(KERN_DEBUG, sdev, + "logical device in state %s\n", + name ? name : "Invalid"); + } + } + } else { + struct myrs_pdev_info *pdev_info; + + pdev_info = kzalloc(sizeof(*pdev_info), GFP_KERNEL); + if (!pdev_info) + return -ENOMEM; + + status = myrs_get_pdev_info(cs, sdev->channel, + sdev->id, sdev->lun, + pdev_info); + if (status != MYRS_STATUS_SUCCESS) { + sdev->hostdata = NULL; + kfree(pdev_info); + return -ENXIO; + } + sdev->hostdata = pdev_info; + } + return 0; +} + +static int myrs_slave_configure(struct scsi_device *sdev) +{ + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_ldev_info *ldev_info; + + if (sdev->channel > sdev->host->max_channel) + return -ENXIO; + + if (sdev->channel < cs->ctlr_info->physchan_present) { + /* Skip HBA device */ + if (sdev->type == TYPE_RAID) + return -ENXIO; + sdev->no_uld_attach = 1; + return 0; + } + if (sdev->lun != 0) + return -ENXIO; + + ldev_info = sdev->hostdata; + if (!ldev_info) + return -ENXIO; + if (ldev_info->ldev_control.wce == MYRS_WRITECACHE_ENABLED || + ldev_info->ldev_control.wce == MYRS_INTELLIGENT_WRITECACHE_ENABLED) + sdev->wce_default_on = 1; + sdev->tagged_supported = 1; + return 0; +} + +static void myrs_slave_destroy(struct scsi_device *sdev) +{ + kfree(sdev->hostdata); +} + +static struct scsi_host_template myrs_template = { + .module = THIS_MODULE, + .name = "DAC960", + .proc_name = "myrs", + .queuecommand = myrs_queuecommand, + .eh_host_reset_handler = myrs_host_reset, + .slave_alloc = myrs_slave_alloc, + .slave_configure = myrs_slave_configure, + .slave_destroy = myrs_slave_destroy, + .cmd_size = sizeof(struct myrs_cmdblk), + .shost_groups = myrs_shost_groups, + .sdev_groups = myrs_sdev_groups, + .this_id = -1, +}; + +static struct myrs_hba *myrs_alloc_host(struct pci_dev *pdev, + const struct pci_device_id *entry) +{ + struct Scsi_Host *shost; + struct myrs_hba *cs; + + shost = scsi_host_alloc(&myrs_template, sizeof(struct myrs_hba)); + if (!shost) + return NULL; + + shost->max_cmd_len = 16; + shost->max_lun = 256; + cs = shost_priv(shost); + mutex_init(&cs->dcmd_mutex); + mutex_init(&cs->cinfo_mutex); + cs->host = shost; + + return cs; +} + +/* + * RAID template functions + */ + +/** + * myrs_is_raid - return boolean indicating device is raid volume + * @dev: the device struct object + */ +static int +myrs_is_raid(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + + return (sdev->channel >= cs->ctlr_info->physchan_present) ? 1 : 0; +} + +/** + * myrs_get_resync - get raid volume resync percent complete + * @dev: the device struct object + */ +static void +myrs_get_resync(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_ldev_info *ldev_info = sdev->hostdata; + u64 percent_complete = 0; + + if (sdev->channel < cs->ctlr_info->physchan_present || !ldev_info) + return; + if (ldev_info->rbld_active) { + unsigned short ldev_num = ldev_info->ldev_num; + + myrs_get_ldev_info(cs, ldev_num, ldev_info); + percent_complete = ldev_info->rbld_lba * 100; + do_div(percent_complete, ldev_info->cfg_devsize); + } + raid_set_resync(myrs_raid_template, dev, percent_complete); +} + +/** + * myrs_get_state - get raid volume status + * @dev: the device struct object + */ +static void +myrs_get_state(struct device *dev) +{ + struct scsi_device *sdev = to_scsi_device(dev); + struct myrs_hba *cs = shost_priv(sdev->host); + struct myrs_ldev_info *ldev_info = sdev->hostdata; + enum raid_state state = RAID_STATE_UNKNOWN; + + if (sdev->channel < cs->ctlr_info->physchan_present || !ldev_info) + state = RAID_STATE_UNKNOWN; + else { + switch (ldev_info->dev_state) { + case MYRS_DEVICE_ONLINE: + state = RAID_STATE_ACTIVE; + break; + case MYRS_DEVICE_SUSPECTED_CRITICAL: + case MYRS_DEVICE_CRITICAL: + state = RAID_STATE_DEGRADED; + break; + case MYRS_DEVICE_REBUILD: + state = RAID_STATE_RESYNCING; + break; + case MYRS_DEVICE_UNCONFIGURED: + case MYRS_DEVICE_INVALID_STATE: + state = RAID_STATE_UNKNOWN; + break; + default: + state = RAID_STATE_OFFLINE; + } + } + raid_set_state(myrs_raid_template, dev, state); +} + +static struct raid_function_template myrs_raid_functions = { + .cookie = &myrs_template, + .is_raid = myrs_is_raid, + .get_resync = myrs_get_resync, + .get_state = myrs_get_state, +}; + +/* + * PCI interface functions + */ +static void myrs_flush_cache(struct myrs_hba *cs) +{ + myrs_dev_op(cs, MYRS_IOCTL_FLUSH_DEVICE_DATA, MYRS_RAID_CONTROLLER); +} + +static void myrs_handle_scsi(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk, + struct scsi_cmnd *scmd) +{ + unsigned char status; + + if (!cmd_blk) + return; + + scsi_dma_unmap(scmd); + status = cmd_blk->status; + if (cmd_blk->sense) { + if (status == MYRS_STATUS_FAILED && cmd_blk->sense_len) { + unsigned int sense_len = SCSI_SENSE_BUFFERSIZE; + + if (sense_len > cmd_blk->sense_len) + sense_len = cmd_blk->sense_len; + memcpy(scmd->sense_buffer, cmd_blk->sense, sense_len); + } + dma_pool_free(cs->sense_pool, cmd_blk->sense, + cmd_blk->sense_addr); + cmd_blk->sense = NULL; + cmd_blk->sense_addr = 0; + } + if (cmd_blk->dcdb) { + dma_pool_free(cs->dcdb_pool, cmd_blk->dcdb, + cmd_blk->dcdb_dma); + cmd_blk->dcdb = NULL; + cmd_blk->dcdb_dma = 0; + } + if (cmd_blk->sgl) { + dma_pool_free(cs->sg_pool, cmd_blk->sgl, + cmd_blk->sgl_addr); + cmd_blk->sgl = NULL; + cmd_blk->sgl_addr = 0; + } + if (cmd_blk->residual) + scsi_set_resid(scmd, cmd_blk->residual); + if (status == MYRS_STATUS_DEVICE_NON_RESPONSIVE || + status == MYRS_STATUS_DEVICE_NON_RESPONSIVE2) + scmd->result = (DID_BAD_TARGET << 16); + else + scmd->result = (DID_OK << 16) | status; + scsi_done(scmd); +} + +static void myrs_handle_cmdblk(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk) +{ + if (!cmd_blk) + return; + + if (cmd_blk->complete) { + complete(cmd_blk->complete); + cmd_blk->complete = NULL; + } +} + +static void myrs_monitor(struct work_struct *work) +{ + struct myrs_hba *cs = container_of(work, struct myrs_hba, + monitor_work.work); + struct Scsi_Host *shost = cs->host; + struct myrs_ctlr_info *info = cs->ctlr_info; + unsigned int epoch = cs->fwstat_buf->epoch; + unsigned long interval = MYRS_PRIMARY_MONITOR_INTERVAL; + unsigned char status; + + dev_dbg(&shost->shost_gendev, "monitor tick\n"); + + status = myrs_get_fwstatus(cs); + + if (cs->needs_update) { + cs->needs_update = false; + mutex_lock(&cs->cinfo_mutex); + status = myrs_get_ctlr_info(cs); + mutex_unlock(&cs->cinfo_mutex); + } + if (cs->fwstat_buf->next_evseq - cs->next_evseq > 0) { + status = myrs_get_event(cs, cs->next_evseq, + cs->event_buf); + if (status == MYRS_STATUS_SUCCESS) { + myrs_log_event(cs, cs->event_buf); + cs->next_evseq++; + interval = 1; + } + } + + if (time_after(jiffies, cs->secondary_monitor_time + + MYRS_SECONDARY_MONITOR_INTERVAL)) + cs->secondary_monitor_time = jiffies; + + if (info->bg_init_active + + info->ldev_init_active + + info->pdev_init_active + + info->cc_active + + info->rbld_active + + info->exp_active != 0) { + struct scsi_device *sdev; + + shost_for_each_device(sdev, shost) { + struct myrs_ldev_info *ldev_info; + int ldev_num; + + if (sdev->channel < info->physchan_present) + continue; + ldev_info = sdev->hostdata; + if (!ldev_info) + continue; + ldev_num = ldev_info->ldev_num; + myrs_get_ldev_info(cs, ldev_num, ldev_info); + } + cs->needs_update = true; + } + if (epoch == cs->epoch && + cs->fwstat_buf->next_evseq == cs->next_evseq && + (cs->needs_update == false || + time_before(jiffies, cs->primary_monitor_time + + MYRS_PRIMARY_MONITOR_INTERVAL))) { + interval = MYRS_SECONDARY_MONITOR_INTERVAL; + } + + if (interval > 1) + cs->primary_monitor_time = jiffies; + queue_delayed_work(cs->work_q, &cs->monitor_work, interval); +} + +static bool myrs_create_mempools(struct pci_dev *pdev, struct myrs_hba *cs) +{ + struct Scsi_Host *shost = cs->host; + size_t elem_size, elem_align; + + elem_align = sizeof(struct myrs_sge); + elem_size = shost->sg_tablesize * elem_align; + cs->sg_pool = dma_pool_create("myrs_sg", &pdev->dev, + elem_size, elem_align, 0); + if (cs->sg_pool == NULL) { + shost_printk(KERN_ERR, shost, + "Failed to allocate SG pool\n"); + return false; + } + + cs->sense_pool = dma_pool_create("myrs_sense", &pdev->dev, + MYRS_SENSE_SIZE, sizeof(int), 0); + if (cs->sense_pool == NULL) { + dma_pool_destroy(cs->sg_pool); + cs->sg_pool = NULL; + shost_printk(KERN_ERR, shost, + "Failed to allocate sense data pool\n"); + return false; + } + + cs->dcdb_pool = dma_pool_create("myrs_dcdb", &pdev->dev, + MYRS_DCDB_SIZE, + sizeof(unsigned char), 0); + if (!cs->dcdb_pool) { + dma_pool_destroy(cs->sg_pool); + cs->sg_pool = NULL; + dma_pool_destroy(cs->sense_pool); + cs->sense_pool = NULL; + shost_printk(KERN_ERR, shost, + "Failed to allocate DCDB pool\n"); + return false; + } + + snprintf(cs->work_q_name, sizeof(cs->work_q_name), + "myrs_wq_%d", shost->host_no); + cs->work_q = create_singlethread_workqueue(cs->work_q_name); + if (!cs->work_q) { + dma_pool_destroy(cs->dcdb_pool); + cs->dcdb_pool = NULL; + dma_pool_destroy(cs->sg_pool); + cs->sg_pool = NULL; + dma_pool_destroy(cs->sense_pool); + cs->sense_pool = NULL; + shost_printk(KERN_ERR, shost, + "Failed to create workqueue\n"); + return false; + } + + /* Initialize the Monitoring Timer. */ + INIT_DELAYED_WORK(&cs->monitor_work, myrs_monitor); + queue_delayed_work(cs->work_q, &cs->monitor_work, 1); + + return true; +} + +static void myrs_destroy_mempools(struct myrs_hba *cs) +{ + cancel_delayed_work_sync(&cs->monitor_work); + destroy_workqueue(cs->work_q); + + dma_pool_destroy(cs->sg_pool); + dma_pool_destroy(cs->dcdb_pool); + dma_pool_destroy(cs->sense_pool); +} + +static void myrs_unmap(struct myrs_hba *cs) +{ + kfree(cs->event_buf); + kfree(cs->ctlr_info); + if (cs->fwstat_buf) { + dma_free_coherent(&cs->pdev->dev, sizeof(struct myrs_fwstat), + cs->fwstat_buf, cs->fwstat_addr); + cs->fwstat_buf = NULL; + } + if (cs->first_stat_mbox) { + dma_free_coherent(&cs->pdev->dev, cs->stat_mbox_size, + cs->first_stat_mbox, cs->stat_mbox_addr); + cs->first_stat_mbox = NULL; + } + if (cs->first_cmd_mbox) { + dma_free_coherent(&cs->pdev->dev, cs->cmd_mbox_size, + cs->first_cmd_mbox, cs->cmd_mbox_addr); + cs->first_cmd_mbox = NULL; + } +} + +static void myrs_cleanup(struct myrs_hba *cs) +{ + struct pci_dev *pdev = cs->pdev; + + /* Free the memory mailbox, status, and related structures */ + myrs_unmap(cs); + + if (cs->mmio_base) { + if (cs->disable_intr) + cs->disable_intr(cs); + iounmap(cs->mmio_base); + cs->mmio_base = NULL; + } + if (cs->irq) + free_irq(cs->irq, cs); + if (cs->io_addr) + release_region(cs->io_addr, 0x80); + pci_set_drvdata(pdev, NULL); + pci_disable_device(pdev); + scsi_host_put(cs->host); +} + +static struct myrs_hba *myrs_detect(struct pci_dev *pdev, + const struct pci_device_id *entry) +{ + struct myrs_privdata *privdata = + (struct myrs_privdata *)entry->driver_data; + irq_handler_t irq_handler = privdata->irq_handler; + unsigned int mmio_size = privdata->mmio_size; + struct myrs_hba *cs = NULL; + + cs = myrs_alloc_host(pdev, entry); + if (!cs) { + dev_err(&pdev->dev, "Unable to allocate Controller\n"); + return NULL; + } + cs->pdev = pdev; + + if (pci_enable_device(pdev)) + goto Failure; + + cs->pci_addr = pci_resource_start(pdev, 0); + + pci_set_drvdata(pdev, cs); + spin_lock_init(&cs->queue_lock); + /* Map the Controller Register Window. */ + if (mmio_size < PAGE_SIZE) + mmio_size = PAGE_SIZE; + cs->mmio_base = ioremap(cs->pci_addr & PAGE_MASK, mmio_size); + if (cs->mmio_base == NULL) { + dev_err(&pdev->dev, + "Unable to map Controller Register Window\n"); + goto Failure; + } + + cs->io_base = cs->mmio_base + (cs->pci_addr & ~PAGE_MASK); + if (privdata->hw_init(pdev, cs, cs->io_base)) + goto Failure; + + /* Acquire shared access to the IRQ Channel. */ + if (request_irq(pdev->irq, irq_handler, IRQF_SHARED, "myrs", cs) < 0) { + dev_err(&pdev->dev, + "Unable to acquire IRQ Channel %d\n", pdev->irq); + goto Failure; + } + cs->irq = pdev->irq; + return cs; + +Failure: + dev_err(&pdev->dev, + "Failed to initialize Controller\n"); + myrs_cleanup(cs); + return NULL; +} + +/* + * myrs_err_status reports Controller BIOS Messages passed through + * the Error Status Register when the driver performs the BIOS handshaking. + * It returns true for fatal errors and false otherwise. + */ + +static bool myrs_err_status(struct myrs_hba *cs, unsigned char status, + unsigned char parm0, unsigned char parm1) +{ + struct pci_dev *pdev = cs->pdev; + + switch (status) { + case 0x00: + dev_info(&pdev->dev, + "Physical Device %d:%d Not Responding\n", + parm1, parm0); + break; + case 0x08: + dev_notice(&pdev->dev, "Spinning Up Drives\n"); + break; + case 0x30: + dev_notice(&pdev->dev, "Configuration Checksum Error\n"); + break; + case 0x60: + dev_notice(&pdev->dev, "Mirror Race Recovery Failed\n"); + break; + case 0x70: + dev_notice(&pdev->dev, "Mirror Race Recovery In Progress\n"); + break; + case 0x90: + dev_notice(&pdev->dev, "Physical Device %d:%d COD Mismatch\n", + parm1, parm0); + break; + case 0xA0: + dev_notice(&pdev->dev, "Logical Drive Installation Aborted\n"); + break; + case 0xB0: + dev_notice(&pdev->dev, "Mirror Race On A Critical Logical Drive\n"); + break; + case 0xD0: + dev_notice(&pdev->dev, "New Controller Configuration Found\n"); + break; + case 0xF0: + dev_err(&pdev->dev, "Fatal Memory Parity Error\n"); + return true; + default: + dev_err(&pdev->dev, "Unknown Initialization Error %02X\n", + status); + return true; + } + return false; +} + +/* + * Hardware-specific functions + */ + +/* + * DAC960 GEM Series Controllers. + */ + +static inline void DAC960_GEM_hw_mbox_new_cmd(void __iomem *base) +{ + __le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_NEW_CMD << 24); + + writel(val, base + DAC960_GEM_IDB_READ_OFFSET); +} + +static inline void DAC960_GEM_ack_hw_mbox_status(void __iomem *base) +{ + __le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_ACK_STS << 24); + + writel(val, base + DAC960_GEM_IDB_CLEAR_OFFSET); +} + +static inline void DAC960_GEM_reset_ctrl(void __iomem *base) +{ + __le32 val = cpu_to_le32(DAC960_GEM_IDB_CTRL_RESET << 24); + + writel(val, base + DAC960_GEM_IDB_READ_OFFSET); +} + +static inline void DAC960_GEM_mem_mbox_new_cmd(void __iomem *base) +{ + __le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_NEW_CMD << 24); + + writel(val, base + DAC960_GEM_IDB_READ_OFFSET); +} + +static inline bool DAC960_GEM_hw_mbox_is_full(void __iomem *base) +{ + __le32 val; + + val = readl(base + DAC960_GEM_IDB_READ_OFFSET); + return (le32_to_cpu(val) >> 24) & DAC960_GEM_IDB_HWMBOX_FULL; +} + +static inline bool DAC960_GEM_init_in_progress(void __iomem *base) +{ + __le32 val; + + val = readl(base + DAC960_GEM_IDB_READ_OFFSET); + return (le32_to_cpu(val) >> 24) & DAC960_GEM_IDB_INIT_IN_PROGRESS; +} + +static inline void DAC960_GEM_ack_hw_mbox_intr(void __iomem *base) +{ + __le32 val = cpu_to_le32(DAC960_GEM_ODB_HWMBOX_ACK_IRQ << 24); + + writel(val, base + DAC960_GEM_ODB_CLEAR_OFFSET); +} + +static inline void DAC960_GEM_ack_intr(void __iomem *base) +{ + __le32 val = cpu_to_le32((DAC960_GEM_ODB_HWMBOX_ACK_IRQ | + DAC960_GEM_ODB_MMBOX_ACK_IRQ) << 24); + + writel(val, base + DAC960_GEM_ODB_CLEAR_OFFSET); +} + +static inline bool DAC960_GEM_hw_mbox_status_available(void __iomem *base) +{ + __le32 val; + + val = readl(base + DAC960_GEM_ODB_READ_OFFSET); + return (le32_to_cpu(val) >> 24) & DAC960_GEM_ODB_HWMBOX_STS_AVAIL; +} + +static inline void DAC960_GEM_enable_intr(void __iomem *base) +{ + __le32 val = cpu_to_le32((DAC960_GEM_IRQMASK_HWMBOX_IRQ | + DAC960_GEM_IRQMASK_MMBOX_IRQ) << 24); + writel(val, base + DAC960_GEM_IRQMASK_CLEAR_OFFSET); +} + +static inline void DAC960_GEM_disable_intr(void __iomem *base) +{ + __le32 val = 0; + + writel(val, base + DAC960_GEM_IRQMASK_READ_OFFSET); +} + +static inline void DAC960_GEM_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox, + union myrs_cmd_mbox *mbox) +{ + memcpy(&mem_mbox->words[1], &mbox->words[1], + sizeof(union myrs_cmd_mbox) - sizeof(unsigned int)); + /* Barrier to avoid reordering */ + wmb(); + mem_mbox->words[0] = mbox->words[0]; + /* Barrier to force PCI access */ + mb(); +} + +static inline void DAC960_GEM_write_hw_mbox(void __iomem *base, + dma_addr_t cmd_mbox_addr) +{ + dma_addr_writeql(cmd_mbox_addr, base + DAC960_GEM_CMDMBX_OFFSET); +} + +static inline unsigned char DAC960_GEM_read_cmd_status(void __iomem *base) +{ + return readw(base + DAC960_GEM_CMDSTS_OFFSET + 2); +} + +static inline bool +DAC960_GEM_read_error_status(void __iomem *base, unsigned char *error, + unsigned char *param0, unsigned char *param1) +{ + __le32 val; + + val = readl(base + DAC960_GEM_ERRSTS_READ_OFFSET); + if (!((le32_to_cpu(val) >> 24) & DAC960_GEM_ERRSTS_PENDING)) + return false; + *error = val & ~(DAC960_GEM_ERRSTS_PENDING << 24); + *param0 = readb(base + DAC960_GEM_CMDMBX_OFFSET + 0); + *param1 = readb(base + DAC960_GEM_CMDMBX_OFFSET + 1); + writel(0x03000000, base + DAC960_GEM_ERRSTS_CLEAR_OFFSET); + return true; +} + +static inline unsigned char +DAC960_GEM_mbox_init(void __iomem *base, dma_addr_t mbox_addr) +{ + unsigned char status; + + while (DAC960_GEM_hw_mbox_is_full(base)) + udelay(1); + DAC960_GEM_write_hw_mbox(base, mbox_addr); + DAC960_GEM_hw_mbox_new_cmd(base); + while (!DAC960_GEM_hw_mbox_status_available(base)) + udelay(1); + status = DAC960_GEM_read_cmd_status(base); + DAC960_GEM_ack_hw_mbox_intr(base); + DAC960_GEM_ack_hw_mbox_status(base); + + return status; +} + +static int DAC960_GEM_hw_init(struct pci_dev *pdev, + struct myrs_hba *cs, void __iomem *base) +{ + int timeout = 0; + unsigned char status, parm0, parm1; + + DAC960_GEM_disable_intr(base); + DAC960_GEM_ack_hw_mbox_status(base); + udelay(1000); + while (DAC960_GEM_init_in_progress(base) && + timeout < MYRS_MAILBOX_TIMEOUT) { + if (DAC960_GEM_read_error_status(base, &status, + &parm0, &parm1) && + myrs_err_status(cs, status, parm0, parm1)) + return -EIO; + udelay(10); + timeout++; + } + if (timeout == MYRS_MAILBOX_TIMEOUT) { + dev_err(&pdev->dev, + "Timeout waiting for Controller Initialisation\n"); + return -ETIMEDOUT; + } + if (!myrs_enable_mmio_mbox(cs, DAC960_GEM_mbox_init)) { + dev_err(&pdev->dev, + "Unable to Enable Memory Mailbox Interface\n"); + DAC960_GEM_reset_ctrl(base); + return -EAGAIN; + } + DAC960_GEM_enable_intr(base); + cs->write_cmd_mbox = DAC960_GEM_write_cmd_mbox; + cs->get_cmd_mbox = DAC960_GEM_mem_mbox_new_cmd; + cs->disable_intr = DAC960_GEM_disable_intr; + cs->reset = DAC960_GEM_reset_ctrl; + return 0; +} + +static irqreturn_t DAC960_GEM_intr_handler(int irq, void *arg) +{ + struct myrs_hba *cs = arg; + void __iomem *base = cs->io_base; + struct myrs_stat_mbox *next_stat_mbox; + unsigned long flags; + + spin_lock_irqsave(&cs->queue_lock, flags); + DAC960_GEM_ack_intr(base); + next_stat_mbox = cs->next_stat_mbox; + while (next_stat_mbox->id > 0) { + unsigned short id = next_stat_mbox->id; + struct scsi_cmnd *scmd = NULL; + struct myrs_cmdblk *cmd_blk = NULL; + + if (id == MYRS_DCMD_TAG) + cmd_blk = &cs->dcmd_blk; + else if (id == MYRS_MCMD_TAG) + cmd_blk = &cs->mcmd_blk; + else { + scmd = scsi_host_find_tag(cs->host, id - 3); + if (scmd) + cmd_blk = scsi_cmd_priv(scmd); + } + if (cmd_blk) { + cmd_blk->status = next_stat_mbox->status; + cmd_blk->sense_len = next_stat_mbox->sense_len; + cmd_blk->residual = next_stat_mbox->residual; + } else + dev_err(&cs->pdev->dev, + "Unhandled command completion %d\n", id); + + memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox)); + if (++next_stat_mbox > cs->last_stat_mbox) + next_stat_mbox = cs->first_stat_mbox; + + if (cmd_blk) { + if (id < 3) + myrs_handle_cmdblk(cs, cmd_blk); + else + myrs_handle_scsi(cs, cmd_blk, scmd); + } + } + cs->next_stat_mbox = next_stat_mbox; + spin_unlock_irqrestore(&cs->queue_lock, flags); + return IRQ_HANDLED; +} + +static struct myrs_privdata DAC960_GEM_privdata = { + .hw_init = DAC960_GEM_hw_init, + .irq_handler = DAC960_GEM_intr_handler, + .mmio_size = DAC960_GEM_mmio_size, +}; + +/* + * DAC960 BA Series Controllers. + */ + +static inline void DAC960_BA_hw_mbox_new_cmd(void __iomem *base) +{ + writeb(DAC960_BA_IDB_HWMBOX_NEW_CMD, base + DAC960_BA_IDB_OFFSET); +} + +static inline void DAC960_BA_ack_hw_mbox_status(void __iomem *base) +{ + writeb(DAC960_BA_IDB_HWMBOX_ACK_STS, base + DAC960_BA_IDB_OFFSET); +} + +static inline void DAC960_BA_reset_ctrl(void __iomem *base) +{ + writeb(DAC960_BA_IDB_CTRL_RESET, base + DAC960_BA_IDB_OFFSET); +} + +static inline void DAC960_BA_mem_mbox_new_cmd(void __iomem *base) +{ + writeb(DAC960_BA_IDB_MMBOX_NEW_CMD, base + DAC960_BA_IDB_OFFSET); +} + +static inline bool DAC960_BA_hw_mbox_is_full(void __iomem *base) +{ + u8 val; + + val = readb(base + DAC960_BA_IDB_OFFSET); + return !(val & DAC960_BA_IDB_HWMBOX_EMPTY); +} + +static inline bool DAC960_BA_init_in_progress(void __iomem *base) +{ + u8 val; + + val = readb(base + DAC960_BA_IDB_OFFSET); + return !(val & DAC960_BA_IDB_INIT_DONE); +} + +static inline void DAC960_BA_ack_hw_mbox_intr(void __iomem *base) +{ + writeb(DAC960_BA_ODB_HWMBOX_ACK_IRQ, base + DAC960_BA_ODB_OFFSET); +} + +static inline void DAC960_BA_ack_intr(void __iomem *base) +{ + writeb(DAC960_BA_ODB_HWMBOX_ACK_IRQ | DAC960_BA_ODB_MMBOX_ACK_IRQ, + base + DAC960_BA_ODB_OFFSET); +} + +static inline bool DAC960_BA_hw_mbox_status_available(void __iomem *base) +{ + u8 val; + + val = readb(base + DAC960_BA_ODB_OFFSET); + return val & DAC960_BA_ODB_HWMBOX_STS_AVAIL; +} + +static inline void DAC960_BA_enable_intr(void __iomem *base) +{ + writeb(~DAC960_BA_IRQMASK_DISABLE_IRQ, base + DAC960_BA_IRQMASK_OFFSET); +} + +static inline void DAC960_BA_disable_intr(void __iomem *base) +{ + writeb(0xFF, base + DAC960_BA_IRQMASK_OFFSET); +} + +static inline void DAC960_BA_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox, + union myrs_cmd_mbox *mbox) +{ + memcpy(&mem_mbox->words[1], &mbox->words[1], + sizeof(union myrs_cmd_mbox) - sizeof(unsigned int)); + /* Barrier to avoid reordering */ + wmb(); + mem_mbox->words[0] = mbox->words[0]; + /* Barrier to force PCI access */ + mb(); +} + + +static inline void DAC960_BA_write_hw_mbox(void __iomem *base, + dma_addr_t cmd_mbox_addr) +{ + dma_addr_writeql(cmd_mbox_addr, base + DAC960_BA_CMDMBX_OFFSET); +} + +static inline unsigned char DAC960_BA_read_cmd_status(void __iomem *base) +{ + return readw(base + DAC960_BA_CMDSTS_OFFSET + 2); +} + +static inline bool +DAC960_BA_read_error_status(void __iomem *base, unsigned char *error, + unsigned char *param0, unsigned char *param1) +{ + u8 val; + + val = readb(base + DAC960_BA_ERRSTS_OFFSET); + if (!(val & DAC960_BA_ERRSTS_PENDING)) + return false; + val &= ~DAC960_BA_ERRSTS_PENDING; + *error = val; + *param0 = readb(base + DAC960_BA_CMDMBX_OFFSET + 0); + *param1 = readb(base + DAC960_BA_CMDMBX_OFFSET + 1); + writeb(0xFF, base + DAC960_BA_ERRSTS_OFFSET); + return true; +} + +static inline unsigned char +DAC960_BA_mbox_init(void __iomem *base, dma_addr_t mbox_addr) +{ + unsigned char status; + + while (DAC960_BA_hw_mbox_is_full(base)) + udelay(1); + DAC960_BA_write_hw_mbox(base, mbox_addr); + DAC960_BA_hw_mbox_new_cmd(base); + while (!DAC960_BA_hw_mbox_status_available(base)) + udelay(1); + status = DAC960_BA_read_cmd_status(base); + DAC960_BA_ack_hw_mbox_intr(base); + DAC960_BA_ack_hw_mbox_status(base); + + return status; +} + +static int DAC960_BA_hw_init(struct pci_dev *pdev, + struct myrs_hba *cs, void __iomem *base) +{ + int timeout = 0; + unsigned char status, parm0, parm1; + + DAC960_BA_disable_intr(base); + DAC960_BA_ack_hw_mbox_status(base); + udelay(1000); + while (DAC960_BA_init_in_progress(base) && + timeout < MYRS_MAILBOX_TIMEOUT) { + if (DAC960_BA_read_error_status(base, &status, + &parm0, &parm1) && + myrs_err_status(cs, status, parm0, parm1)) + return -EIO; + udelay(10); + timeout++; + } + if (timeout == MYRS_MAILBOX_TIMEOUT) { + dev_err(&pdev->dev, + "Timeout waiting for Controller Initialisation\n"); + return -ETIMEDOUT; + } + if (!myrs_enable_mmio_mbox(cs, DAC960_BA_mbox_init)) { + dev_err(&pdev->dev, + "Unable to Enable Memory Mailbox Interface\n"); + DAC960_BA_reset_ctrl(base); + return -EAGAIN; + } + DAC960_BA_enable_intr(base); + cs->write_cmd_mbox = DAC960_BA_write_cmd_mbox; + cs->get_cmd_mbox = DAC960_BA_mem_mbox_new_cmd; + cs->disable_intr = DAC960_BA_disable_intr; + cs->reset = DAC960_BA_reset_ctrl; + return 0; +} + +static irqreturn_t DAC960_BA_intr_handler(int irq, void *arg) +{ + struct myrs_hba *cs = arg; + void __iomem *base = cs->io_base; + struct myrs_stat_mbox *next_stat_mbox; + unsigned long flags; + + spin_lock_irqsave(&cs->queue_lock, flags); + DAC960_BA_ack_intr(base); + next_stat_mbox = cs->next_stat_mbox; + while (next_stat_mbox->id > 0) { + unsigned short id = next_stat_mbox->id; + struct scsi_cmnd *scmd = NULL; + struct myrs_cmdblk *cmd_blk = NULL; + + if (id == MYRS_DCMD_TAG) + cmd_blk = &cs->dcmd_blk; + else if (id == MYRS_MCMD_TAG) + cmd_blk = &cs->mcmd_blk; + else { + scmd = scsi_host_find_tag(cs->host, id - 3); + if (scmd) + cmd_blk = scsi_cmd_priv(scmd); + } + if (cmd_blk) { + cmd_blk->status = next_stat_mbox->status; + cmd_blk->sense_len = next_stat_mbox->sense_len; + cmd_blk->residual = next_stat_mbox->residual; + } else + dev_err(&cs->pdev->dev, + "Unhandled command completion %d\n", id); + + memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox)); + if (++next_stat_mbox > cs->last_stat_mbox) + next_stat_mbox = cs->first_stat_mbox; + + if (cmd_blk) { + if (id < 3) + myrs_handle_cmdblk(cs, cmd_blk); + else + myrs_handle_scsi(cs, cmd_blk, scmd); + } + } + cs->next_stat_mbox = next_stat_mbox; + spin_unlock_irqrestore(&cs->queue_lock, flags); + return IRQ_HANDLED; +} + +static struct myrs_privdata DAC960_BA_privdata = { + .hw_init = DAC960_BA_hw_init, + .irq_handler = DAC960_BA_intr_handler, + .mmio_size = DAC960_BA_mmio_size, +}; + +/* + * DAC960 LP Series Controllers. + */ + +static inline void DAC960_LP_hw_mbox_new_cmd(void __iomem *base) +{ + writeb(DAC960_LP_IDB_HWMBOX_NEW_CMD, base + DAC960_LP_IDB_OFFSET); +} + +static inline void DAC960_LP_ack_hw_mbox_status(void __iomem *base) +{ + writeb(DAC960_LP_IDB_HWMBOX_ACK_STS, base + DAC960_LP_IDB_OFFSET); +} + +static inline void DAC960_LP_reset_ctrl(void __iomem *base) +{ + writeb(DAC960_LP_IDB_CTRL_RESET, base + DAC960_LP_IDB_OFFSET); +} + +static inline void DAC960_LP_mem_mbox_new_cmd(void __iomem *base) +{ + writeb(DAC960_LP_IDB_MMBOX_NEW_CMD, base + DAC960_LP_IDB_OFFSET); +} + +static inline bool DAC960_LP_hw_mbox_is_full(void __iomem *base) +{ + u8 val; + + val = readb(base + DAC960_LP_IDB_OFFSET); + return val & DAC960_LP_IDB_HWMBOX_FULL; +} + +static inline bool DAC960_LP_init_in_progress(void __iomem *base) +{ + u8 val; + + val = readb(base + DAC960_LP_IDB_OFFSET); + return val & DAC960_LP_IDB_INIT_IN_PROGRESS; +} + +static inline void DAC960_LP_ack_hw_mbox_intr(void __iomem *base) +{ + writeb(DAC960_LP_ODB_HWMBOX_ACK_IRQ, base + DAC960_LP_ODB_OFFSET); +} + +static inline void DAC960_LP_ack_intr(void __iomem *base) +{ + writeb(DAC960_LP_ODB_HWMBOX_ACK_IRQ | DAC960_LP_ODB_MMBOX_ACK_IRQ, + base + DAC960_LP_ODB_OFFSET); +} + +static inline bool DAC960_LP_hw_mbox_status_available(void __iomem *base) +{ + u8 val; + + val = readb(base + DAC960_LP_ODB_OFFSET); + return val & DAC960_LP_ODB_HWMBOX_STS_AVAIL; +} + +static inline void DAC960_LP_enable_intr(void __iomem *base) +{ + writeb(~DAC960_LP_IRQMASK_DISABLE_IRQ, base + DAC960_LP_IRQMASK_OFFSET); +} + +static inline void DAC960_LP_disable_intr(void __iomem *base) +{ + writeb(0xFF, base + DAC960_LP_IRQMASK_OFFSET); +} + +static inline void DAC960_LP_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox, + union myrs_cmd_mbox *mbox) +{ + memcpy(&mem_mbox->words[1], &mbox->words[1], + sizeof(union myrs_cmd_mbox) - sizeof(unsigned int)); + /* Barrier to avoid reordering */ + wmb(); + mem_mbox->words[0] = mbox->words[0]; + /* Barrier to force PCI access */ + mb(); +} + +static inline void DAC960_LP_write_hw_mbox(void __iomem *base, + dma_addr_t cmd_mbox_addr) +{ + dma_addr_writeql(cmd_mbox_addr, base + DAC960_LP_CMDMBX_OFFSET); +} + +static inline unsigned char DAC960_LP_read_cmd_status(void __iomem *base) +{ + return readw(base + DAC960_LP_CMDSTS_OFFSET + 2); +} + +static inline bool +DAC960_LP_read_error_status(void __iomem *base, unsigned char *error, + unsigned char *param0, unsigned char *param1) +{ + u8 val; + + val = readb(base + DAC960_LP_ERRSTS_OFFSET); + if (!(val & DAC960_LP_ERRSTS_PENDING)) + return false; + val &= ~DAC960_LP_ERRSTS_PENDING; + *error = val; + *param0 = readb(base + DAC960_LP_CMDMBX_OFFSET + 0); + *param1 = readb(base + DAC960_LP_CMDMBX_OFFSET + 1); + writeb(0xFF, base + DAC960_LP_ERRSTS_OFFSET); + return true; +} + +static inline unsigned char +DAC960_LP_mbox_init(void __iomem *base, dma_addr_t mbox_addr) +{ + unsigned char status; + + while (DAC960_LP_hw_mbox_is_full(base)) + udelay(1); + DAC960_LP_write_hw_mbox(base, mbox_addr); + DAC960_LP_hw_mbox_new_cmd(base); + while (!DAC960_LP_hw_mbox_status_available(base)) + udelay(1); + status = DAC960_LP_read_cmd_status(base); + DAC960_LP_ack_hw_mbox_intr(base); + DAC960_LP_ack_hw_mbox_status(base); + + return status; +} + +static int DAC960_LP_hw_init(struct pci_dev *pdev, + struct myrs_hba *cs, void __iomem *base) +{ + int timeout = 0; + unsigned char status, parm0, parm1; + + DAC960_LP_disable_intr(base); + DAC960_LP_ack_hw_mbox_status(base); + udelay(1000); + while (DAC960_LP_init_in_progress(base) && + timeout < MYRS_MAILBOX_TIMEOUT) { + if (DAC960_LP_read_error_status(base, &status, + &parm0, &parm1) && + myrs_err_status(cs, status, parm0, parm1)) + return -EIO; + udelay(10); + timeout++; + } + if (timeout == MYRS_MAILBOX_TIMEOUT) { + dev_err(&pdev->dev, + "Timeout waiting for Controller Initialisation\n"); + return -ETIMEDOUT; + } + if (!myrs_enable_mmio_mbox(cs, DAC960_LP_mbox_init)) { + dev_err(&pdev->dev, + "Unable to Enable Memory Mailbox Interface\n"); + DAC960_LP_reset_ctrl(base); + return -ENODEV; + } + DAC960_LP_enable_intr(base); + cs->write_cmd_mbox = DAC960_LP_write_cmd_mbox; + cs->get_cmd_mbox = DAC960_LP_mem_mbox_new_cmd; + cs->disable_intr = DAC960_LP_disable_intr; + cs->reset = DAC960_LP_reset_ctrl; + + return 0; +} + +static irqreturn_t DAC960_LP_intr_handler(int irq, void *arg) +{ + struct myrs_hba *cs = arg; + void __iomem *base = cs->io_base; + struct myrs_stat_mbox *next_stat_mbox; + unsigned long flags; + + spin_lock_irqsave(&cs->queue_lock, flags); + DAC960_LP_ack_intr(base); + next_stat_mbox = cs->next_stat_mbox; + while (next_stat_mbox->id > 0) { + unsigned short id = next_stat_mbox->id; + struct scsi_cmnd *scmd = NULL; + struct myrs_cmdblk *cmd_blk = NULL; + + if (id == MYRS_DCMD_TAG) + cmd_blk = &cs->dcmd_blk; + else if (id == MYRS_MCMD_TAG) + cmd_blk = &cs->mcmd_blk; + else { + scmd = scsi_host_find_tag(cs->host, id - 3); + if (scmd) + cmd_blk = scsi_cmd_priv(scmd); + } + if (cmd_blk) { + cmd_blk->status = next_stat_mbox->status; + cmd_blk->sense_len = next_stat_mbox->sense_len; + cmd_blk->residual = next_stat_mbox->residual; + } else + dev_err(&cs->pdev->dev, + "Unhandled command completion %d\n", id); + + memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox)); + if (++next_stat_mbox > cs->last_stat_mbox) + next_stat_mbox = cs->first_stat_mbox; + + if (cmd_blk) { + if (id < 3) + myrs_handle_cmdblk(cs, cmd_blk); + else + myrs_handle_scsi(cs, cmd_blk, scmd); + } + } + cs->next_stat_mbox = next_stat_mbox; + spin_unlock_irqrestore(&cs->queue_lock, flags); + return IRQ_HANDLED; +} + +static struct myrs_privdata DAC960_LP_privdata = { + .hw_init = DAC960_LP_hw_init, + .irq_handler = DAC960_LP_intr_handler, + .mmio_size = DAC960_LP_mmio_size, +}; + +/* + * Module functions + */ +static int +myrs_probe(struct pci_dev *dev, const struct pci_device_id *entry) +{ + struct myrs_hba *cs; + int ret; + + cs = myrs_detect(dev, entry); + if (!cs) + return -ENODEV; + + ret = myrs_get_config(cs); + if (ret < 0) { + myrs_cleanup(cs); + return ret; + } + + if (!myrs_create_mempools(dev, cs)) { + ret = -ENOMEM; + goto failed; + } + + ret = scsi_add_host(cs->host, &dev->dev); + if (ret) { + dev_err(&dev->dev, "scsi_add_host failed with %d\n", ret); + myrs_destroy_mempools(cs); + goto failed; + } + scsi_scan_host(cs->host); + return 0; +failed: + myrs_cleanup(cs); + return ret; +} + + +static void myrs_remove(struct pci_dev *pdev) +{ + struct myrs_hba *cs = pci_get_drvdata(pdev); + + if (cs == NULL) + return; + + shost_printk(KERN_NOTICE, cs->host, "Flushing Cache..."); + myrs_flush_cache(cs); + myrs_destroy_mempools(cs); + myrs_cleanup(cs); +} + + +static const struct pci_device_id myrs_id_table[] = { + { + PCI_DEVICE_SUB(PCI_VENDOR_ID_MYLEX, + PCI_DEVICE_ID_MYLEX_DAC960_GEM, + PCI_VENDOR_ID_MYLEX, PCI_ANY_ID), + .driver_data = (unsigned long) &DAC960_GEM_privdata, + }, + { + PCI_DEVICE_DATA(MYLEX, DAC960_BA, &DAC960_BA_privdata), + }, + { + PCI_DEVICE_DATA(MYLEX, DAC960_LP, &DAC960_LP_privdata), + }, + {0, }, +}; + +MODULE_DEVICE_TABLE(pci, myrs_id_table); + +static struct pci_driver myrs_pci_driver = { + .name = "myrs", + .id_table = myrs_id_table, + .probe = myrs_probe, + .remove = myrs_remove, +}; + +static int __init myrs_init_module(void) +{ + int ret; + + myrs_raid_template = raid_class_attach(&myrs_raid_functions); + if (!myrs_raid_template) + return -ENODEV; + + ret = pci_register_driver(&myrs_pci_driver); + if (ret) + raid_class_release(myrs_raid_template); + + return ret; +} + +static void __exit myrs_cleanup_module(void) +{ + pci_unregister_driver(&myrs_pci_driver); + raid_class_release(myrs_raid_template); +} + +module_init(myrs_init_module); +module_exit(myrs_cleanup_module); + +MODULE_DESCRIPTION("Mylex DAC960/AcceleRAID/eXtremeRAID driver (SCSI Interface)"); +MODULE_AUTHOR("Hannes Reinecke <hare@suse.com>"); +MODULE_LICENSE("GPL"); |