Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c
new file mode 100644
index 0000000..eb0dd56
--- /dev/null
+++ b/drivers/scsi/myrs.c
@@ -0,0 +1,3271 @@
+// 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);
+
+ WARN_ON(in_interrupt());
+ 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 | GFP_DMA);
+ if (!cs->ctlr_info)
+ goto out_free;
+
+ cs->event_buf = kzalloc(sizeof(struct myrs_event),
+ GFP_KERNEL | GFP_DMA);
+ 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;
+ unsigned char status;
+
+ 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;
+ status = 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 device_attribute *myrs_sdev_attrs[] = {
+ &dev_attr_consistency_check,
+ &dev_attr_rebuild,
+ &dev_attr_raid_state,
+ &dev_attr_raid_level,
+ NULL,
+};
+
+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 device_attribute *myrs_shost_attrs[] = {
+ &dev_attr_serial,
+ &dev_attr_ctlr_num,
+ &dev_attr_processor,
+ &dev_attr_model,
+ &dev_attr_ctlr_type,
+ &dev_attr_cache_size,
+ &dev_attr_firmware,
+ &dev_attr_discovery,
+ &dev_attr_flush_cache,
+ &dev_attr_disable_enclosure_messages,
+ NULL,
+};
+
+/*
+ * SCSI midlayer interface
+ */
+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 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);
+ scmd->scsi_done(scmd);
+ return 0;
+ }
+
+ switch (scmd->cmnd[0]) {
+ case REPORT_LUNS:
+ scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
+ 0x20, 0x0);
+ scmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
+ scmd->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_buffer(0, scmd->sense_buffer,
+ ILLEGAL_REQUEST, 0x24, 0);
+ scmd->result = (DRIVER_SENSE << 24) |
+ SAM_STAT_CHECK_CONDITION;
+ } else {
+ myrs_mode_sense(cs, scmd, ldev_info);
+ scmd->result = (DID_OK << 16);
+ }
+ scmd->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 = scmd->request->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 = scmd->request->tag + 3;
+ mbox->SCSI_10.control.dma_ctrl_to_host =
+ (scmd->sc_data_direction == DMA_FROM_DEVICE);
+ if (scmd->request->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 = scmd->request->tag + 3;
+ mbox->SCSI_255.control.dma_ctrl_to_host =
+ (scmd->sc_data_direction == DMA_FROM_DEVICE);
+ if (scmd->request->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);
+ scmd->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|GFP_DMA);
+ 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|GFP_DMA);
+ 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);
+}
+
+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_attrs = myrs_shost_attrs,
+ .sdev_attrs = myrs_sdev_attrs,
+ .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;
+ u8 status;
+
+ if (sdev->channel < cs->ctlr_info->physchan_present || !ldev_info)
+ return;
+ if (ldev_info->rbld_active) {
+ unsigned short ldev_num = ldev_info->ldev_num;
+
+ status = 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);
+}
+
+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
+ */
+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;
+ scmd->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) {
+ cs->disable_intr(cs);
+ iounmap(cs->mmio_base);
+ }
+ if (cs->irq)
+ free_irq(cs->irq, cs);
+ if (cs->io_addr)
+ release_region(cs->io_addr, 0x80);
+ iounmap(cs->mmio_base);
+ 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_nocache(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_gen_intr(void __iomem *base)
+{
+ __le32 val = cpu_to_le32(DAC960_GEM_IDB_GEN_IRQ << 24);
+
+ writel(val, base + DAC960_GEM_IDB_READ_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_mem_mbox_intr(void __iomem *base)
+{
+ __le32 val = cpu_to_le32(DAC960_GEM_ODB_MMBOX_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 bool DAC960_GEM_mem_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_MMBOX_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 bool DAC960_GEM_intr_enabled(void __iomem *base)
+{
+ __le32 val;
+
+ val = readl(base + DAC960_GEM_IRQMASK_READ_OFFSET);
+ return !((le32_to_cpu(val) >> 24) &
+ (DAC960_GEM_IRQMASK_HWMBOX_IRQ |
+ DAC960_GEM_IRQMASK_MMBOX_IRQ));
+}
+
+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 short DAC960_GEM_read_cmd_ident(void __iomem *base)
+{
+ return readw(base + DAC960_GEM_CMDSTS_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;
+}
+
+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_gen_intr(void __iomem *base)
+{
+ writeb(DAC960_BA_IDB_GEN_IRQ, 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_mem_mbox_intr(void __iomem *base)
+{
+ writeb(DAC960_BA_ODB_MMBOX_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 bool DAC960_BA_mem_mbox_status_available(void __iomem *base)
+{
+ u8 val;
+
+ val = readb(base + DAC960_BA_ODB_OFFSET);
+ return val & DAC960_BA_ODB_MMBOX_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 bool DAC960_BA_intr_enabled(void __iomem *base)
+{
+ u8 val;
+
+ val = readb(base + DAC960_BA_IRQMASK_OFFSET);
+ return !(val & DAC960_BA_IRQMASK_DISABLE_IRQ);
+}
+
+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 short DAC960_BA_read_cmd_ident(void __iomem *base)
+{
+ return readw(base + DAC960_BA_CMDSTS_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;
+}
+
+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_gen_intr(void __iomem *base)
+{
+ writeb(DAC960_LP_IDB_GEN_IRQ, 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_mem_mbox_intr(void __iomem *base)
+{
+ writeb(DAC960_LP_ODB_MMBOX_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 bool DAC960_LP_mem_mbox_status_available(void __iomem *base)
+{
+ u8 val;
+
+ val = readb(base + DAC960_LP_ODB_OFFSET);
+ return val & DAC960_LP_ODB_MMBOX_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 bool DAC960_LP_intr_enabled(void __iomem *base)
+{
+ u8 val;
+
+ val = readb(base + DAC960_LP_IRQMASK_OFFSET);
+ return !(val & DAC960_LP_IRQMASK_DISABLE_IRQ);
+}
+
+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 short DAC960_LP_read_cmd_ident(void __iomem *base)
+{
+ return readw(base + DAC960_LP_CMDSTS_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;
+}
+
+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");