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linux/drivers/scsi/myrs.c
Arnd Bergmann 1197c5b209 scsi: mylex: Fix sysfs buffer lengths 
The myrb and myrs drivers use an odd way of implementing their sysfs files,
calling snprintf() with a fixed length of 32 bytes to print into a page
sized buffer. One of the strings is actually longer than 32 bytes, which
clang can warn about:

drivers/scsi/myrb.c:1906:10: error: 'snprintf' will always be truncated; specified size is 32, but format string expands to at least 34 [-Werror,-Wformat-truncation]
drivers/scsi/myrs.c:1089:10: error: 'snprintf' will always be truncated; specified size is 32, but format string expands to at least 34 [-Werror,-Wformat-truncation]

These could all be plain sprintf() without a length as the buffer is always
long enough. On the other hand, sysfs files should not be overly long
either, so just double the length to make sure the longest strings don't
get truncated here.

Fixes: 7726618639 ("scsi: myrs: Add Mylex RAID controller (SCSI interface)")
Fixes: 081ff398c5 ("scsi: myrb: Add Mylex RAID controller (block interface)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240326223825.4084412-8-arnd@kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-04-01 21:08:48 -04:00

3169 lines
89 KiB
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// SPDX-License-Identifier: GPL-2.0
/*
* Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
*
* This driver supports the newer, SCSI-based firmware interface only.
*
* Copyright 2017 Hannes Reinecke, SUSE Linux GmbH <hare@suse.com>
*
* Based on the original DAC960 driver, which has
* Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
* Portions Copyright 2002 by Mylex (An IBM Business Unit)
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/raid_class.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_tcq.h>
#include "myrs.h"
static struct raid_template *myrs_raid_template;
static struct myrs_devstate_name_entry {
enum myrs_devstate state;
char *name;
} myrs_devstate_name_list[] = {
{ MYRS_DEVICE_UNCONFIGURED, "Unconfigured" },
{ MYRS_DEVICE_ONLINE, "Online" },
{ MYRS_DEVICE_REBUILD, "Rebuild" },
{ MYRS_DEVICE_MISSING, "Missing" },
{ MYRS_DEVICE_SUSPECTED_CRITICAL, "SuspectedCritical" },
{ MYRS_DEVICE_OFFLINE, "Offline" },
{ MYRS_DEVICE_CRITICAL, "Critical" },
{ MYRS_DEVICE_SUSPECTED_DEAD, "SuspectedDead" },
{ MYRS_DEVICE_COMMANDED_OFFLINE, "CommandedOffline" },
{ MYRS_DEVICE_STANDBY, "Standby" },
{ MYRS_DEVICE_INVALID_STATE, "Invalid" },
};
static char *myrs_devstate_name(enum myrs_devstate state)
{
struct myrs_devstate_name_entry *entry = myrs_devstate_name_list;
int i;
for (i = 0; i < ARRAY_SIZE(myrs_devstate_name_list); i++) {
if (entry[i].state == state)
return entry[i].name;
}
return NULL;
}
static struct myrs_raid_level_name_entry {
enum myrs_raid_level level;
char *name;
} myrs_raid_level_name_list[] = {
{ MYRS_RAID_LEVEL0, "RAID0" },
{ MYRS_RAID_LEVEL1, "RAID1" },
{ MYRS_RAID_LEVEL3, "RAID3 right asymmetric parity" },
{ MYRS_RAID_LEVEL5, "RAID5 right asymmetric parity" },
{ MYRS_RAID_LEVEL6, "RAID6" },
{ MYRS_RAID_JBOD, "JBOD" },
{ MYRS_RAID_NEWSPAN, "New Mylex SPAN" },
{ MYRS_RAID_LEVEL3F, "RAID3 fixed parity" },
{ MYRS_RAID_LEVEL3L, "RAID3 left symmetric parity" },
{ MYRS_RAID_SPAN, "Mylex SPAN" },
{ MYRS_RAID_LEVEL5L, "RAID5 left symmetric parity" },
{ MYRS_RAID_LEVELE, "RAIDE (concatenation)" },
{ MYRS_RAID_PHYSICAL, "Physical device" },
};
static char *myrs_raid_level_name(enum myrs_raid_level level)
{
struct myrs_raid_level_name_entry *entry = myrs_raid_level_name_list;
int i;
for (i = 0; i < ARRAY_SIZE(myrs_raid_level_name_list); i++) {
if (entry[i].level == level)
return entry[i].name;
}
return NULL;
}
/*
* myrs_reset_cmd - clears critical fields in struct myrs_cmdblk
*/
static inline void myrs_reset_cmd(struct myrs_cmdblk *cmd_blk)
{
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
memset(mbox, 0, sizeof(union myrs_cmd_mbox));
cmd_blk->status = 0;
}
/*
* myrs_qcmd - queues Command for DAC960 V2 Series Controllers.
*/
static void myrs_qcmd(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk)
{
void __iomem *base = cs->io_base;
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
union myrs_cmd_mbox *next_mbox = cs->next_cmd_mbox;
cs->write_cmd_mbox(next_mbox, mbox);
if (cs->prev_cmd_mbox1->words[0] == 0 ||
cs->prev_cmd_mbox2->words[0] == 0)
cs->get_cmd_mbox(base);
cs->prev_cmd_mbox2 = cs->prev_cmd_mbox1;
cs->prev_cmd_mbox1 = next_mbox;
if (++next_mbox > cs->last_cmd_mbox)
next_mbox = cs->first_cmd_mbox;
cs->next_cmd_mbox = next_mbox;
}
/*
* myrs_exec_cmd - executes V2 Command and waits for completion.
*/
static void myrs_exec_cmd(struct myrs_hba *cs,
struct myrs_cmdblk *cmd_blk)
{
DECLARE_COMPLETION_ONSTACK(complete);
unsigned long flags;
cmd_blk->complete = &complete;
spin_lock_irqsave(&cs->queue_lock, flags);
myrs_qcmd(cs, cmd_blk);
spin_unlock_irqrestore(&cs->queue_lock, flags);
wait_for_completion(&complete);
}
/*
* myrs_report_progress - prints progress message
*/
static void myrs_report_progress(struct myrs_hba *cs, unsigned short ldev_num,
unsigned char *msg, unsigned long blocks,
unsigned long size)
{
shost_printk(KERN_INFO, cs->host,
"Logical Drive %d: %s in Progress: %d%% completed\n",
ldev_num, msg,
(100 * (int)(blocks >> 7)) / (int)(size >> 7));
}
/*
* myrs_get_ctlr_info - executes a Controller Information IOCTL Command
*/
static unsigned char myrs_get_ctlr_info(struct myrs_hba *cs)
{
struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
dma_addr_t ctlr_info_addr;
union myrs_sgl *sgl;
unsigned char status;
unsigned short ldev_present, ldev_critical, ldev_offline;
ldev_present = cs->ctlr_info->ldev_present;
ldev_critical = cs->ctlr_info->ldev_critical;
ldev_offline = cs->ctlr_info->ldev_offline;
ctlr_info_addr = dma_map_single(&cs->pdev->dev, cs->ctlr_info,
sizeof(struct myrs_ctlr_info),
DMA_FROM_DEVICE);
if (dma_mapping_error(&cs->pdev->dev, ctlr_info_addr))
return MYRS_STATUS_FAILED;
mutex_lock(&cs->dcmd_mutex);
myrs_reset_cmd(cmd_blk);
mbox->ctlr_info.id = MYRS_DCMD_TAG;
mbox->ctlr_info.opcode = MYRS_CMD_OP_IOCTL;
mbox->ctlr_info.control.dma_ctrl_to_host = true;
mbox->ctlr_info.control.no_autosense = true;
mbox->ctlr_info.dma_size = sizeof(struct myrs_ctlr_info);
mbox->ctlr_info.ctlr_num = 0;
mbox->ctlr_info.ioctl_opcode = MYRS_IOCTL_GET_CTLR_INFO;
sgl = &mbox->ctlr_info.dma_addr;
sgl->sge[0].sge_addr = ctlr_info_addr;
sgl->sge[0].sge_count = mbox->ctlr_info.dma_size;
dev_dbg(&cs->host->shost_gendev, "Sending GetControllerInfo\n");
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
dma_unmap_single(&cs->pdev->dev, ctlr_info_addr,
sizeof(struct myrs_ctlr_info), DMA_FROM_DEVICE);
if (status == MYRS_STATUS_SUCCESS) {
if (cs->ctlr_info->bg_init_active +
cs->ctlr_info->ldev_init_active +
cs->ctlr_info->pdev_init_active +
cs->ctlr_info->cc_active +
cs->ctlr_info->rbld_active +
cs->ctlr_info->exp_active != 0)
cs->needs_update = true;
if (cs->ctlr_info->ldev_present != ldev_present ||
cs->ctlr_info->ldev_critical != ldev_critical ||
cs->ctlr_info->ldev_offline != ldev_offline)
shost_printk(KERN_INFO, cs->host,
"Logical drive count changes (%d/%d/%d)\n",
cs->ctlr_info->ldev_critical,
cs->ctlr_info->ldev_offline,
cs->ctlr_info->ldev_present);
}
return status;
}
/*
* myrs_get_ldev_info - executes a Logical Device Information IOCTL Command
*/
static unsigned char myrs_get_ldev_info(struct myrs_hba *cs,
unsigned short ldev_num, struct myrs_ldev_info *ldev_info)
{
struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
dma_addr_t ldev_info_addr;
struct myrs_ldev_info ldev_info_orig;
union myrs_sgl *sgl;
unsigned char status;
memcpy(&ldev_info_orig, ldev_info, sizeof(struct myrs_ldev_info));
ldev_info_addr = dma_map_single(&cs->pdev->dev, ldev_info,
sizeof(struct myrs_ldev_info),
DMA_FROM_DEVICE);
if (dma_mapping_error(&cs->pdev->dev, ldev_info_addr))
return MYRS_STATUS_FAILED;
mutex_lock(&cs->dcmd_mutex);
myrs_reset_cmd(cmd_blk);
mbox->ldev_info.id = MYRS_DCMD_TAG;
mbox->ldev_info.opcode = MYRS_CMD_OP_IOCTL;
mbox->ldev_info.control.dma_ctrl_to_host = true;
mbox->ldev_info.control.no_autosense = true;
mbox->ldev_info.dma_size = sizeof(struct myrs_ldev_info);
mbox->ldev_info.ldev.ldev_num = ldev_num;
mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_GET_LDEV_INFO_VALID;
sgl = &mbox->ldev_info.dma_addr;
sgl->sge[0].sge_addr = ldev_info_addr;
sgl->sge[0].sge_count = mbox->ldev_info.dma_size;
dev_dbg(&cs->host->shost_gendev,
"Sending GetLogicalDeviceInfoValid for ldev %d\n", ldev_num);
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
dma_unmap_single(&cs->pdev->dev, ldev_info_addr,
sizeof(struct myrs_ldev_info), DMA_FROM_DEVICE);
if (status == MYRS_STATUS_SUCCESS) {
unsigned short ldev_num = ldev_info->ldev_num;
struct myrs_ldev_info *new = ldev_info;
struct myrs_ldev_info *old = &ldev_info_orig;
unsigned long ldev_size = new->cfg_devsize;
if (new->dev_state != old->dev_state) {
const char *name;
name = myrs_devstate_name(new->dev_state);
shost_printk(KERN_INFO, cs->host,
"Logical Drive %d is now %s\n",
ldev_num, name ? name : "Invalid");
}
if ((new->soft_errs != old->soft_errs) ||
(new->cmds_failed != old->cmds_failed) ||
(new->deferred_write_errs != old->deferred_write_errs))
shost_printk(KERN_INFO, cs->host,
"Logical Drive %d Errors: Soft = %d, Failed = %d, Deferred Write = %d\n",
ldev_num, new->soft_errs,
new->cmds_failed,
new->deferred_write_errs);
if (new->bg_init_active)
myrs_report_progress(cs, ldev_num,
"Background Initialization",
new->bg_init_lba, ldev_size);
else if (new->fg_init_active)
myrs_report_progress(cs, ldev_num,
"Foreground Initialization",
new->fg_init_lba, ldev_size);
else if (new->migration_active)
myrs_report_progress(cs, ldev_num,
"Data Migration",
new->migration_lba, ldev_size);
else if (new->patrol_active)
myrs_report_progress(cs, ldev_num,
"Patrol Operation",
new->patrol_lba, ldev_size);
if (old->bg_init_active && !new->bg_init_active)
shost_printk(KERN_INFO, cs->host,
"Logical Drive %d: Background Initialization %s\n",
ldev_num,
(new->ldev_control.ldev_init_done ?
"Completed" : "Failed"));
}
return status;
}
/*
* myrs_get_pdev_info - executes a "Read Physical Device Information" Command
*/
static unsigned char myrs_get_pdev_info(struct myrs_hba *cs,
unsigned char channel, unsigned char target, unsigned char lun,
struct myrs_pdev_info *pdev_info)
{
struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
dma_addr_t pdev_info_addr;
union myrs_sgl *sgl;
unsigned char status;
pdev_info_addr = dma_map_single(&cs->pdev->dev, pdev_info,
sizeof(struct myrs_pdev_info),
DMA_FROM_DEVICE);
if (dma_mapping_error(&cs->pdev->dev, pdev_info_addr))
return MYRS_STATUS_FAILED;
mutex_lock(&cs->dcmd_mutex);
myrs_reset_cmd(cmd_blk);
mbox->pdev_info.opcode = MYRS_CMD_OP_IOCTL;
mbox->pdev_info.id = MYRS_DCMD_TAG;
mbox->pdev_info.control.dma_ctrl_to_host = true;
mbox->pdev_info.control.no_autosense = true;
mbox->pdev_info.dma_size = sizeof(struct myrs_pdev_info);
mbox->pdev_info.pdev.lun = lun;
mbox->pdev_info.pdev.target = target;
mbox->pdev_info.pdev.channel = channel;
mbox->pdev_info.ioctl_opcode = MYRS_IOCTL_GET_PDEV_INFO_VALID;
sgl = &mbox->pdev_info.dma_addr;
sgl->sge[0].sge_addr = pdev_info_addr;
sgl->sge[0].sge_count = mbox->pdev_info.dma_size;
dev_dbg(&cs->host->shost_gendev,
"Sending GetPhysicalDeviceInfoValid for pdev %d:%d:%d\n",
channel, target, lun);
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
dma_unmap_single(&cs->pdev->dev, pdev_info_addr,
sizeof(struct myrs_pdev_info), DMA_FROM_DEVICE);
return status;
}
/*
* myrs_dev_op - executes a "Device Operation" Command
*/
static unsigned char myrs_dev_op(struct myrs_hba *cs,
enum myrs_ioctl_opcode opcode, enum myrs_opdev opdev)
{
struct myrs_cmdblk *cmd_blk = &cs->dcmd_blk;
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
unsigned char status;
mutex_lock(&cs->dcmd_mutex);
myrs_reset_cmd(cmd_blk);
mbox->dev_op.opcode = MYRS_CMD_OP_IOCTL;
mbox->dev_op.id = MYRS_DCMD_TAG;
mbox->dev_op.control.dma_ctrl_to_host = true;
mbox->dev_op.control.no_autosense = true;
mbox->dev_op.ioctl_opcode = opcode;
mbox->dev_op.opdev = opdev;
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
return status;
}
/*
* myrs_translate_pdev - translates a Physical Device Channel and
* TargetID into a Logical Device.
*/
static unsigned char myrs_translate_pdev(struct myrs_hba *cs,
unsigned char channel, unsigned char target, unsigned char lun,
struct myrs_devmap *devmap)
{
struct pci_dev *pdev = cs->pdev;
dma_addr_t devmap_addr;
struct myrs_cmdblk *cmd_blk;
union myrs_cmd_mbox *mbox;
union myrs_sgl *sgl;
unsigned char status;
memset(devmap, 0x0, sizeof(struct myrs_devmap));
devmap_addr = dma_map_single(&pdev->dev, devmap,
sizeof(struct myrs_devmap),
DMA_FROM_DEVICE);
if (dma_mapping_error(&pdev->dev, devmap_addr))
return MYRS_STATUS_FAILED;
mutex_lock(&cs->dcmd_mutex);
cmd_blk = &cs->dcmd_blk;
mbox = &cmd_blk->mbox;
mbox->pdev_info.opcode = MYRS_CMD_OP_IOCTL;
mbox->pdev_info.control.dma_ctrl_to_host = true;
mbox->pdev_info.control.no_autosense = true;
mbox->pdev_info.dma_size = sizeof(struct myrs_devmap);
mbox->pdev_info.pdev.target = target;
mbox->pdev_info.pdev.channel = channel;
mbox->pdev_info.pdev.lun = lun;
mbox->pdev_info.ioctl_opcode = MYRS_IOCTL_XLATE_PDEV_TO_LDEV;
sgl = &mbox->pdev_info.dma_addr;
sgl->sge[0].sge_addr = devmap_addr;
sgl->sge[0].sge_count = mbox->pdev_info.dma_size;
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
dma_unmap_single(&pdev->dev, devmap_addr,
sizeof(struct myrs_devmap), DMA_FROM_DEVICE);
return status;
}
/*
* myrs_get_event - executes a Get Event Command
*/
static unsigned char myrs_get_event(struct myrs_hba *cs,
unsigned int event_num, struct myrs_event *event_buf)
{
struct pci_dev *pdev = cs->pdev;
dma_addr_t event_addr;
struct myrs_cmdblk *cmd_blk = &cs->mcmd_blk;
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
union myrs_sgl *sgl;
unsigned char status;
event_addr = dma_map_single(&pdev->dev, event_buf,
sizeof(struct myrs_event), DMA_FROM_DEVICE);
if (dma_mapping_error(&pdev->dev, event_addr))
return MYRS_STATUS_FAILED;
mbox->get_event.opcode = MYRS_CMD_OP_IOCTL;
mbox->get_event.dma_size = sizeof(struct myrs_event);
mbox->get_event.evnum_upper = event_num >> 16;
mbox->get_event.ctlr_num = 0;
mbox->get_event.ioctl_opcode = MYRS_IOCTL_GET_EVENT;
mbox->get_event.evnum_lower = event_num & 0xFFFF;
sgl = &mbox->get_event.dma_addr;
sgl->sge[0].sge_addr = event_addr;
sgl->sge[0].sge_count = mbox->get_event.dma_size;
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
dma_unmap_single(&pdev->dev, event_addr,
sizeof(struct myrs_event), DMA_FROM_DEVICE);
return status;
}
/*
* myrs_get_fwstatus - executes a Get Health Status Command
*/
static unsigned char myrs_get_fwstatus(struct myrs_hba *cs)
{
struct myrs_cmdblk *cmd_blk = &cs->mcmd_blk;
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
union myrs_sgl *sgl;
unsigned char status = cmd_blk->status;
myrs_reset_cmd(cmd_blk);
mbox->common.opcode = MYRS_CMD_OP_IOCTL;
mbox->common.id = MYRS_MCMD_TAG;
mbox->common.control.dma_ctrl_to_host = true;
mbox->common.control.no_autosense = true;
mbox->common.dma_size = sizeof(struct myrs_fwstat);
mbox->common.ioctl_opcode = MYRS_IOCTL_GET_HEALTH_STATUS;
sgl = &mbox->common.dma_addr;
sgl->sge[0].sge_addr = cs->fwstat_addr;
sgl->sge[0].sge_count = mbox->ctlr_info.dma_size;
dev_dbg(&cs->host->shost_gendev, "Sending GetHealthStatus\n");
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
return status;
}
/*
* myrs_enable_mmio_mbox - enables the Memory Mailbox Interface
*/
static bool myrs_enable_mmio_mbox(struct myrs_hba *cs,
enable_mbox_t enable_mbox_fn)
{
void __iomem *base = cs->io_base;
struct pci_dev *pdev = cs->pdev;
union myrs_cmd_mbox *cmd_mbox;
struct myrs_stat_mbox *stat_mbox;
union myrs_cmd_mbox *mbox;
dma_addr_t mbox_addr;
unsigned char status = MYRS_STATUS_FAILED;
if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
dev_err(&pdev->dev, "DMA mask out of range\n");
return false;
}
/* Temporary dma mapping, used only in the scope of this function */
mbox = dma_alloc_coherent(&pdev->dev, sizeof(union myrs_cmd_mbox),
&mbox_addr, GFP_KERNEL);
if (dma_mapping_error(&pdev->dev, mbox_addr))
return false;
/* These are the base addresses for the command memory mailbox array */
cs->cmd_mbox_size = MYRS_MAX_CMD_MBOX * sizeof(union myrs_cmd_mbox);
cmd_mbox = dma_alloc_coherent(&pdev->dev, cs->cmd_mbox_size,
&cs->cmd_mbox_addr, GFP_KERNEL);
if (dma_mapping_error(&pdev->dev, cs->cmd_mbox_addr)) {
dev_err(&pdev->dev, "Failed to map command mailbox\n");
goto out_free;
}
cs->first_cmd_mbox = cmd_mbox;
cmd_mbox += MYRS_MAX_CMD_MBOX - 1;
cs->last_cmd_mbox = cmd_mbox;
cs->next_cmd_mbox = cs->first_cmd_mbox;
cs->prev_cmd_mbox1 = cs->last_cmd_mbox;
cs->prev_cmd_mbox2 = cs->last_cmd_mbox - 1;
/* These are the base addresses for the status memory mailbox array */
cs->stat_mbox_size = MYRS_MAX_STAT_MBOX * sizeof(struct myrs_stat_mbox);
stat_mbox = dma_alloc_coherent(&pdev->dev, cs->stat_mbox_size,
&cs->stat_mbox_addr, GFP_KERNEL);
if (dma_mapping_error(&pdev->dev, cs->stat_mbox_addr)) {
dev_err(&pdev->dev, "Failed to map status mailbox\n");
goto out_free;
}
cs->first_stat_mbox = stat_mbox;
stat_mbox += MYRS_MAX_STAT_MBOX - 1;
cs->last_stat_mbox = stat_mbox;
cs->next_stat_mbox = cs->first_stat_mbox;
cs->fwstat_buf = dma_alloc_coherent(&pdev->dev,
sizeof(struct myrs_fwstat),
&cs->fwstat_addr, GFP_KERNEL);
if (dma_mapping_error(&pdev->dev, cs->fwstat_addr)) {
dev_err(&pdev->dev, "Failed to map firmware health buffer\n");
cs->fwstat_buf = NULL;
goto out_free;
}
cs->ctlr_info = kzalloc(sizeof(struct myrs_ctlr_info), GFP_KERNEL);
if (!cs->ctlr_info)
goto out_free;
cs->event_buf = kzalloc(sizeof(struct myrs_event), GFP_KERNEL);
if (!cs->event_buf)
goto out_free;
/* Enable the Memory Mailbox Interface. */
memset(mbox, 0, sizeof(union myrs_cmd_mbox));
mbox->set_mbox.id = 1;
mbox->set_mbox.opcode = MYRS_CMD_OP_IOCTL;
mbox->set_mbox.control.no_autosense = true;
mbox->set_mbox.first_cmd_mbox_size_kb =
(MYRS_MAX_CMD_MBOX * sizeof(union myrs_cmd_mbox)) >> 10;
mbox->set_mbox.first_stat_mbox_size_kb =
(MYRS_MAX_STAT_MBOX * sizeof(struct myrs_stat_mbox)) >> 10;
mbox->set_mbox.second_cmd_mbox_size_kb = 0;
mbox->set_mbox.second_stat_mbox_size_kb = 0;
mbox->set_mbox.sense_len = 0;
mbox->set_mbox.ioctl_opcode = MYRS_IOCTL_SET_MEM_MBOX;
mbox->set_mbox.fwstat_buf_size_kb = 1;
mbox->set_mbox.fwstat_buf_addr = cs->fwstat_addr;
mbox->set_mbox.first_cmd_mbox_addr = cs->cmd_mbox_addr;
mbox->set_mbox.first_stat_mbox_addr = cs->stat_mbox_addr;
status = enable_mbox_fn(base, mbox_addr);
out_free:
dma_free_coherent(&pdev->dev, sizeof(union myrs_cmd_mbox),
mbox, mbox_addr);
if (status != MYRS_STATUS_SUCCESS)
dev_err(&pdev->dev, "Failed to enable mailbox, status %X\n",
status);
return (status == MYRS_STATUS_SUCCESS);
}
/*
* myrs_get_config - reads the Configuration Information
*/
static int myrs_get_config(struct myrs_hba *cs)
{
struct myrs_ctlr_info *info = cs->ctlr_info;
struct Scsi_Host *shost = cs->host;
unsigned char status;
unsigned char model[20];
unsigned char fw_version[12];
int i, model_len;
/* Get data into dma-able area, then copy into permanent location */
mutex_lock(&cs->cinfo_mutex);
status = myrs_get_ctlr_info(cs);
mutex_unlock(&cs->cinfo_mutex);
if (status != MYRS_STATUS_SUCCESS) {
shost_printk(KERN_ERR, shost,
"Failed to get controller information\n");
return -ENODEV;
}
/* Initialize the Controller Model Name and Full Model Name fields. */
model_len = sizeof(info->ctlr_name);
if (model_len > sizeof(model)-1)
model_len = sizeof(model)-1;
memcpy(model, info->ctlr_name, model_len);
model_len--;
while (model[model_len] == ' ' || model[model_len] == '\0')
model_len--;
model[++model_len] = '\0';
strcpy(cs->model_name, "DAC960 ");
strcat(cs->model_name, model);
/* Initialize the Controller Firmware Version field. */
sprintf(fw_version, "%d.%02d-%02d",
info->fw_major_version, info->fw_minor_version,
info->fw_turn_number);
if (info->fw_major_version == 6 &&
info->fw_minor_version == 0 &&
info->fw_turn_number < 1) {
shost_printk(KERN_WARNING, shost,
"FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n"
"STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n"
"PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
fw_version);
return -ENODEV;
}
/* Initialize the Controller Channels and Targets. */
shost->max_channel = info->physchan_present + info->virtchan_present;
shost->max_id = info->max_targets[0];
for (i = 1; i < 16; i++) {
if (!info->max_targets[i])
continue;
if (shost->max_id < info->max_targets[i])
shost->max_id = info->max_targets[i];
}
/*
* Initialize the Controller Queue Depth, Driver Queue Depth,
* Logical Drive Count, Maximum Blocks per Command, Controller
* Scatter/Gather Limit, and Driver Scatter/Gather Limit.
* The Driver Queue Depth must be at most three less than
* the Controller Queue Depth; tag '1' is reserved for
* direct commands, and tag '2' for monitoring commands.
*/
shost->can_queue = info->max_tcq - 3;
if (shost->can_queue > MYRS_MAX_CMD_MBOX - 3)
shost->can_queue = MYRS_MAX_CMD_MBOX - 3;
shost->max_sectors = info->max_transfer_size;
shost->sg_tablesize = info->max_sge;
if (shost->sg_tablesize > MYRS_SG_LIMIT)
shost->sg_tablesize = MYRS_SG_LIMIT;
shost_printk(KERN_INFO, shost,
"Configuring %s PCI RAID Controller\n", model);
shost_printk(KERN_INFO, shost,
" Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
fw_version, info->physchan_present, info->mem_size_mb);
shost_printk(KERN_INFO, shost,
" Controller Queue Depth: %d, Maximum Blocks per Command: %d\n",
shost->can_queue, shost->max_sectors);
shost_printk(KERN_INFO, shost,
" Driver Queue Depth: %d, Scatter/Gather Limit: %d of %d Segments\n",
shost->can_queue, shost->sg_tablesize, MYRS_SG_LIMIT);
for (i = 0; i < info->physchan_max; i++) {
if (!info->max_targets[i])
continue;
shost_printk(KERN_INFO, shost,
" Device Channel %d: max %d devices\n",
i, info->max_targets[i]);
}
shost_printk(KERN_INFO, shost,
" Physical: %d/%d channels, %d disks, %d devices\n",
info->physchan_present, info->physchan_max,
info->pdisk_present, info->pdev_present);
shost_printk(KERN_INFO, shost,
" Logical: %d/%d channels, %d disks\n",
info->virtchan_present, info->virtchan_max,
info->ldev_present);
return 0;
}
/*
* myrs_log_event - prints a Controller Event message
*/
static struct {
int ev_code;
unsigned char *ev_msg;
} myrs_ev_list[] = {
/* Physical Device Events (0x0000 - 0x007F) */
{ 0x0001, "P Online" },
{ 0x0002, "P Standby" },
{ 0x0005, "P Automatic Rebuild Started" },
{ 0x0006, "P Manual Rebuild Started" },
{ 0x0007, "P Rebuild Completed" },
{ 0x0008, "P Rebuild Cancelled" },
{ 0x0009, "P Rebuild Failed for Unknown Reasons" },
{ 0x000A, "P Rebuild Failed due to New Physical Device" },
{ 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
{ 0x000C, "S Offline" },
{ 0x000D, "P Found" },
{ 0x000E, "P Removed" },
{ 0x000F, "P Unconfigured" },
{ 0x0010, "P Expand Capacity Started" },
{ 0x0011, "P Expand Capacity Completed" },
{ 0x0012, "P Expand Capacity Failed" },
{ 0x0013, "P Command Timed Out" },
{ 0x0014, "P Command Aborted" },
{ 0x0015, "P Command Retried" },
{ 0x0016, "P Parity Error" },
{ 0x0017, "P Soft Error" },
{ 0x0018, "P Miscellaneous Error" },
{ 0x0019, "P Reset" },
{ 0x001A, "P Active Spare Found" },
{ 0x001B, "P Warm Spare Found" },
{ 0x001C, "S Sense Data Received" },
{ 0x001D, "P Initialization Started" },
{ 0x001E, "P Initialization Completed" },
{ 0x001F, "P Initialization Failed" },
{ 0x0020, "P Initialization Cancelled" },
{ 0x0021, "P Failed because Write Recovery Failed" },
{ 0x0022, "P Failed because SCSI Bus Reset Failed" },
{ 0x0023, "P Failed because of Double Check Condition" },
{ 0x0024, "P Failed because Device Cannot Be Accessed" },
{ 0x0025, "P Failed because of Gross Error on SCSI Processor" },
{ 0x0026, "P Failed because of Bad Tag from Device" },
{ 0x0027, "P Failed because of Command Timeout" },
{ 0x0028, "P Failed because of System Reset" },
{ 0x0029, "P Failed because of Busy Status or Parity Error" },
{ 0x002A, "P Failed because Host Set Device to Failed State" },
{ 0x002B, "P Failed because of Selection Timeout" },
{ 0x002C, "P Failed because of SCSI Bus Phase Error" },
{ 0x002D, "P Failed because Device Returned Unknown Status" },
{ 0x002E, "P Failed because Device Not Ready" },
{ 0x002F, "P Failed because Device Not Found at Startup" },
{ 0x0030, "P Failed because COD Write Operation Failed" },
{ 0x0031, "P Failed because BDT Write Operation Failed" },
{ 0x0039, "P Missing at Startup" },
{ 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
{ 0x003C, "P Temporarily Offline Device Automatically Made Online" },
{ 0x003D, "P Standby Rebuild Started" },
/* Logical Device Events (0x0080 - 0x00FF) */
{ 0x0080, "M Consistency Check Started" },
{ 0x0081, "M Consistency Check Completed" },
{ 0x0082, "M Consistency Check Cancelled" },
{ 0x0083, "M Consistency Check Completed With Errors" },
{ 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
{ 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
{ 0x0086, "L Offline" },
{ 0x0087, "L Critical" },
{ 0x0088, "L Online" },
{ 0x0089, "M Automatic Rebuild Started" },
{ 0x008A, "M Manual Rebuild Started" },
{ 0x008B, "M Rebuild Completed" },
{ 0x008C, "M Rebuild Cancelled" },
{ 0x008D, "M Rebuild Failed for Unknown Reasons" },
{ 0x008E, "M Rebuild Failed due to New Physical Device" },
{ 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
{ 0x0090, "M Initialization Started" },
{ 0x0091, "M Initialization Completed" },
{ 0x0092, "M Initialization Cancelled" },
{ 0x0093, "M Initialization Failed" },
{ 0x0094, "L Found" },
{ 0x0095, "L Deleted" },
{ 0x0096, "M Expand Capacity Started" },
{ 0x0097, "M Expand Capacity Completed" },
{ 0x0098, "M Expand Capacity Failed" },
{ 0x0099, "L Bad Block Found" },
{ 0x009A, "L Size Changed" },
{ 0x009B, "L Type Changed" },
{ 0x009C, "L Bad Data Block Found" },
{ 0x009E, "L Read of Data Block in BDT" },
{ 0x009F, "L Write Back Data for Disk Block Lost" },
{ 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
{ 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
{ 0x00A2, "L Standby Rebuild Started" },
/* Fault Management Events (0x0100 - 0x017F) */
{ 0x0140, "E Fan %d Failed" },
{ 0x0141, "E Fan %d OK" },
{ 0x0142, "E Fan %d Not Present" },
{ 0x0143, "E Power Supply %d Failed" },
{ 0x0144, "E Power Supply %d OK" },
{ 0x0145, "E Power Supply %d Not Present" },
{ 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
{ 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
{ 0x0148, "E Temperature Sensor %d Temperature Normal" },
{ 0x0149, "E Temperature Sensor %d Not Present" },
{ 0x014A, "E Enclosure Management Unit %d Access Critical" },
{ 0x014B, "E Enclosure Management Unit %d Access OK" },
{ 0x014C, "E Enclosure Management Unit %d Access Offline" },
/* Controller Events (0x0180 - 0x01FF) */
{ 0x0181, "C Cache Write Back Error" },
{ 0x0188, "C Battery Backup Unit Found" },
{ 0x0189, "C Battery Backup Unit Charge Level Low" },
{ 0x018A, "C Battery Backup Unit Charge Level OK" },
{ 0x0193, "C Installation Aborted" },
{ 0x0195, "C Battery Backup Unit Physically Removed" },
{ 0x0196, "C Memory Error During Warm Boot" },
{ 0x019E, "C Memory Soft ECC Error Corrected" },
{ 0x019F, "C Memory Hard ECC Error Corrected" },
{ 0x01A2, "C Battery Backup Unit Failed" },
{ 0x01AB, "C Mirror Race Recovery Failed" },
{ 0x01AC, "C Mirror Race on Critical Drive" },
/* Controller Internal Processor Events */
{ 0x0380, "C Internal Controller Hung" },
{ 0x0381, "C Internal Controller Firmware Breakpoint" },
{ 0x0390, "C Internal Controller i960 Processor Specific Error" },
{ 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
{ 0, "" }
};
static void myrs_log_event(struct myrs_hba *cs, struct myrs_event *ev)
{
unsigned char msg_buf[MYRS_LINE_BUFFER_SIZE];
int ev_idx = 0, ev_code;
unsigned char ev_type, *ev_msg;
struct Scsi_Host *shost = cs->host;
struct scsi_device *sdev;
struct scsi_sense_hdr sshdr = {0};
unsigned char sense_info[4];
unsigned char cmd_specific[4];
if (ev->ev_code == 0x1C) {
if (!scsi_normalize_sense(ev->sense_data, 40, &sshdr)) {
memset(&sshdr, 0x0, sizeof(sshdr));
memset(sense_info, 0x0, sizeof(sense_info));
memset(cmd_specific, 0x0, sizeof(cmd_specific));
} else {
memcpy(sense_info, &ev->sense_data[3], 4);
memcpy(cmd_specific, &ev->sense_data[7], 4);
}
}
if (sshdr.sense_key == VENDOR_SPECIFIC &&
(sshdr.asc == 0x80 || sshdr.asc == 0x81))
ev->ev_code = ((sshdr.asc - 0x80) << 8 | sshdr.ascq);
while (true) {
ev_code = myrs_ev_list[ev_idx].ev_code;
if (ev_code == ev->ev_code || ev_code == 0)
break;
ev_idx++;
}
ev_type = myrs_ev_list[ev_idx].ev_msg[0];
ev_msg = &myrs_ev_list[ev_idx].ev_msg[2];
if (ev_code == 0) {
shost_printk(KERN_WARNING, shost,
"Unknown Controller Event Code %04X\n",
ev->ev_code);
return;
}
switch (ev_type) {
case 'P':
sdev = scsi_device_lookup(shost, ev->channel,
ev->target, 0);
sdev_printk(KERN_INFO, sdev, "event %d: Physical Device %s\n",
ev->ev_seq, ev_msg);
if (sdev && sdev->hostdata &&
sdev->channel < cs->ctlr_info->physchan_present) {
struct myrs_pdev_info *pdev_info = sdev->hostdata;
switch (ev->ev_code) {
case 0x0001:
case 0x0007:
pdev_info->dev_state = MYRS_DEVICE_ONLINE;
break;
case 0x0002:
pdev_info->dev_state = MYRS_DEVICE_STANDBY;
break;
case 0x000C:
pdev_info->dev_state = MYRS_DEVICE_OFFLINE;
break;
case 0x000E:
pdev_info->dev_state = MYRS_DEVICE_MISSING;
break;
case 0x000F:
pdev_info->dev_state = MYRS_DEVICE_UNCONFIGURED;
break;
}
}
break;
case 'L':
shost_printk(KERN_INFO, shost,
"event %d: Logical Drive %d %s\n",
ev->ev_seq, ev->lun, ev_msg);
cs->needs_update = true;
break;
case 'M':
shost_printk(KERN_INFO, shost,
"event %d: Logical Drive %d %s\n",
ev->ev_seq, ev->lun, ev_msg);
cs->needs_update = true;
break;
case 'S':
if (sshdr.sense_key == NO_SENSE ||
(sshdr.sense_key == NOT_READY &&
sshdr.asc == 0x04 && (sshdr.ascq == 0x01 ||
sshdr.ascq == 0x02)))
break;
shost_printk(KERN_INFO, shost,
"event %d: Physical Device %d:%d %s\n",
ev->ev_seq, ev->channel, ev->target, ev_msg);
shost_printk(KERN_INFO, shost,
"Physical Device %d:%d Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
ev->channel, ev->target,
sshdr.sense_key, sshdr.asc, sshdr.ascq);
shost_printk(KERN_INFO, shost,
"Physical Device %d:%d Sense Information = %02X%02X%02X%02X %02X%02X%02X%02X\n",
ev->channel, ev->target,
sense_info[0], sense_info[1],
sense_info[2], sense_info[3],
cmd_specific[0], cmd_specific[1],
cmd_specific[2], cmd_specific[3]);
break;
case 'E':
if (cs->disable_enc_msg)
break;
sprintf(msg_buf, ev_msg, ev->lun);
shost_printk(KERN_INFO, shost, "event %d: Enclosure %d %s\n",
ev->ev_seq, ev->target, msg_buf);
break;
case 'C':
shost_printk(KERN_INFO, shost, "event %d: Controller %s\n",
ev->ev_seq, ev_msg);
break;
default:
shost_printk(KERN_INFO, shost,
"event %d: Unknown Event Code %04X\n",
ev->ev_seq, ev->ev_code);
break;
}
}
/*
* SCSI sysfs interface functions
*/
static ssize_t raid_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
int ret;
if (!sdev->hostdata)
return snprintf(buf, 16, "Unknown\n");
if (sdev->channel >= cs->ctlr_info->physchan_present) {
struct myrs_ldev_info *ldev_info = sdev->hostdata;
const char *name;
name = myrs_devstate_name(ldev_info->dev_state);
if (name)
ret = snprintf(buf, 64, "%s\n", name);
else
ret = snprintf(buf, 64, "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, 64, "%s\n", name);
else
ret = snprintf(buf, 64, "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, 64, "Invalid (%02X)\n",
ldev_info->dev_state);
} else
name = myrs_raid_level_name(MYRS_RAID_PHYSICAL);
return snprintf(buf, 64, "%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, 64, "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, 64, "rebuilding block %zu of %zu\n",
(size_t)ldev_info->rbld_lba,
(size_t)ldev_info->cfg_devsize);
} else
return snprintf(buf, 64, "not rebuilding\n");
}
static ssize_t rebuild_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
struct myrs_ldev_info *ldev_info;
struct myrs_cmdblk *cmd_blk;
union myrs_cmd_mbox *mbox;
unsigned short ldev_num;
unsigned char status;
int rebuild, ret;
if (sdev->channel < cs->ctlr_info->physchan_present)
return -EINVAL;
ldev_info = sdev->hostdata;
if (!ldev_info)
return -ENXIO;
ldev_num = ldev_info->ldev_num;
ret = kstrtoint(buf, 0, &rebuild);
if (ret)
return ret;
status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
if (status != MYRS_STATUS_SUCCESS) {
sdev_printk(KERN_INFO, sdev,
"Failed to get device information, status 0x%02x\n",
status);
return -EIO;
}
if (rebuild && ldev_info->rbld_active) {
sdev_printk(KERN_INFO, sdev,
"Rebuild Not Initiated; already in progress\n");
return -EALREADY;
}
if (!rebuild && !ldev_info->rbld_active) {
sdev_printk(KERN_INFO, sdev,
"Rebuild Not Cancelled; no rebuild in progress\n");
return count;
}
mutex_lock(&cs->dcmd_mutex);
cmd_blk = &cs->dcmd_blk;
myrs_reset_cmd(cmd_blk);
mbox = &cmd_blk->mbox;
mbox->common.opcode = MYRS_CMD_OP_IOCTL;
mbox->common.id = MYRS_DCMD_TAG;
mbox->common.control.dma_ctrl_to_host = true;
mbox->common.control.no_autosense = true;
if (rebuild) {
mbox->ldev_info.ldev.ldev_num = ldev_num;
mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_RBLD_DEVICE_START;
} else {
mbox->ldev_info.ldev.ldev_num = ldev_num;
mbox->ldev_info.ioctl_opcode = MYRS_IOCTL_RBLD_DEVICE_STOP;
}
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
if (status) {
sdev_printk(KERN_INFO, sdev,
"Rebuild Not %s, status 0x%02x\n",
rebuild ? "Initiated" : "Cancelled", status);
ret = -EIO;
} else {
sdev_printk(KERN_INFO, sdev, "Rebuild %s\n",
rebuild ? "Initiated" : "Cancelled");
ret = count;
}
return ret;
}
static DEVICE_ATTR_RW(rebuild);
static ssize_t consistency_check_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
struct myrs_ldev_info *ldev_info;
unsigned short ldev_num;
if (sdev->channel < cs->ctlr_info->physchan_present)
return snprintf(buf, 64, "physical device - not checking\n");
ldev_info = sdev->hostdata;
if (!ldev_info)
return -ENXIO;
ldev_num = ldev_info->ldev_num;
myrs_get_ldev_info(cs, ldev_num, ldev_info);
if (ldev_info->cc_active)
return snprintf(buf, 64, "checking block %zu of %zu\n",
(size_t)ldev_info->cc_lba,
(size_t)ldev_info->cfg_devsize);
else
return snprintf(buf, 64, "not checking\n");
}
static ssize_t consistency_check_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
struct myrs_ldev_info *ldev_info;
struct myrs_cmdblk *cmd_blk;
union myrs_cmd_mbox *mbox;
unsigned short ldev_num;
unsigned char status;
int check, ret;
if (sdev->channel < cs->ctlr_info->physchan_present)
return -EINVAL;
ldev_info = sdev->hostdata;
if (!ldev_info)
return -ENXIO;
ldev_num = ldev_info->ldev_num;
ret = kstrtoint(buf, 0, &check);
if (ret)
return ret;
status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
if (status != MYRS_STATUS_SUCCESS) {
sdev_printk(KERN_INFO, sdev,
"Failed to get device information, status 0x%02x\n",
status);
return -EIO;
}
if (check && ldev_info->cc_active) {
sdev_printk(KERN_INFO, sdev,
"Consistency Check Not Initiated; "
"already in progress\n");
return -EALREADY;
}
if (!check && !ldev_info->cc_active) {
sdev_printk(KERN_INFO, sdev,
"Consistency Check Not Cancelled; "
"check not in progress\n");
return count;
}
mutex_lock(&cs->dcmd_mutex);
cmd_blk = &cs->dcmd_blk;
myrs_reset_cmd(cmd_blk);
mbox = &cmd_blk->mbox;
mbox->common.opcode = MYRS_CMD_OP_IOCTL;
mbox->common.id = MYRS_DCMD_TAG;
mbox->common.control.dma_ctrl_to_host = true;
mbox->common.control.no_autosense = true;
if (check) {
mbox->cc.ldev.ldev_num = ldev_num;
mbox->cc.ioctl_opcode = MYRS_IOCTL_CC_START;
mbox->cc.restore_consistency = true;
mbox->cc.initialized_area_only = false;
} else {
mbox->cc.ldev.ldev_num = ldev_num;
mbox->cc.ioctl_opcode = MYRS_IOCTL_CC_STOP;
}
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
if (status != MYRS_STATUS_SUCCESS) {
sdev_printk(KERN_INFO, sdev,
"Consistency Check Not %s, status 0x%02x\n",
check ? "Initiated" : "Cancelled", status);
ret = -EIO;
} else {
sdev_printk(KERN_INFO, sdev, "Consistency Check %s\n",
check ? "Initiated" : "Cancelled");
ret = count;
}
return ret;
}
static DEVICE_ATTR_RW(consistency_check);
static struct attribute *myrs_sdev_attrs[] = {
&dev_attr_consistency_check.attr,
&dev_attr_rebuild.attr,
&dev_attr_raid_state.attr,
&dev_attr_raid_level.attr,
NULL,
};
ATTRIBUTE_GROUPS(myrs_sdev);
static ssize_t serial_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
char serial[17];
memcpy(serial, cs->ctlr_info->serial_number, 16);
serial[16] = '\0';
return snprintf(buf, 16, "%s\n", serial);
}
static DEVICE_ATTR_RO(serial);
static ssize_t ctlr_num_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
return snprintf(buf, 20, "%d\n", cs->host->host_no);
}
static DEVICE_ATTR_RO(ctlr_num);
static struct myrs_cpu_type_tbl {
enum myrs_cpu_type type;
char *name;
} myrs_cpu_type_names[] = {
{ MYRS_CPUTYPE_i960CA, "i960CA" },
{ MYRS_CPUTYPE_i960RD, "i960RD" },
{ MYRS_CPUTYPE_i960RN, "i960RN" },
{ MYRS_CPUTYPE_i960RP, "i960RP" },
{ MYRS_CPUTYPE_NorthBay, "NorthBay" },
{ MYRS_CPUTYPE_StrongArm, "StrongARM" },
{ MYRS_CPUTYPE_i960RM, "i960RM" },
};
static ssize_t processor_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
struct myrs_cpu_type_tbl *tbl;
const char *first_processor = NULL;
const char *second_processor = NULL;
struct myrs_ctlr_info *info = cs->ctlr_info;
ssize_t ret;
int i;
if (info->cpu[0].cpu_count) {
tbl = myrs_cpu_type_names;
for (i = 0; i < ARRAY_SIZE(myrs_cpu_type_names); i++) {
if (tbl[i].type == info->cpu[0].cpu_type) {
first_processor = tbl[i].name;
break;
}
}
}
if (info->cpu[1].cpu_count) {
tbl = myrs_cpu_type_names;
for (i = 0; i < ARRAY_SIZE(myrs_cpu_type_names); i++) {
if (tbl[i].type == info->cpu[1].cpu_type) {
second_processor = tbl[i].name;
break;
}
}
}
if (first_processor && second_processor)
ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n"
"2: %s (%s, %d cpus)\n",
info->cpu[0].cpu_name,
first_processor, info->cpu[0].cpu_count,
info->cpu[1].cpu_name,
second_processor, info->cpu[1].cpu_count);
else if (first_processor && !second_processor)
ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n2: absent\n",
info->cpu[0].cpu_name,
first_processor, info->cpu[0].cpu_count);
else if (!first_processor && second_processor)
ret = snprintf(buf, 64, "1: absent\n2: %s (%s, %d cpus)\n",
info->cpu[1].cpu_name,
second_processor, info->cpu[1].cpu_count);
else
ret = snprintf(buf, 64, "1: absent\n2: absent\n");
return ret;
}
static DEVICE_ATTR_RO(processor);
static ssize_t model_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
return snprintf(buf, 28, "%s\n", cs->model_name);
}
static DEVICE_ATTR_RO(model);
static ssize_t ctlr_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
return snprintf(buf, 4, "%d\n", cs->ctlr_info->ctlr_type);
}
static DEVICE_ATTR_RO(ctlr_type);
static ssize_t cache_size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
return snprintf(buf, 8, "%d MB\n", cs->ctlr_info->cache_size_mb);
}
static DEVICE_ATTR_RO(cache_size);
static ssize_t firmware_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
return snprintf(buf, 16, "%d.%02d-%02d\n",
cs->ctlr_info->fw_major_version,
cs->ctlr_info->fw_minor_version,
cs->ctlr_info->fw_turn_number);
}
static DEVICE_ATTR_RO(firmware);
static ssize_t discovery_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
struct myrs_cmdblk *cmd_blk;
union myrs_cmd_mbox *mbox;
unsigned char status;
mutex_lock(&cs->dcmd_mutex);
cmd_blk = &cs->dcmd_blk;
myrs_reset_cmd(cmd_blk);
mbox = &cmd_blk->mbox;
mbox->common.opcode = MYRS_CMD_OP_IOCTL;
mbox->common.id = MYRS_DCMD_TAG;
mbox->common.control.dma_ctrl_to_host = true;
mbox->common.control.no_autosense = true;
mbox->common.ioctl_opcode = MYRS_IOCTL_START_DISCOVERY;
myrs_exec_cmd(cs, cmd_blk);
status = cmd_blk->status;
mutex_unlock(&cs->dcmd_mutex);
if (status != MYRS_STATUS_SUCCESS) {
shost_printk(KERN_INFO, shost,
"Discovery Not Initiated, status %02X\n",
status);
return -EINVAL;
}
shost_printk(KERN_INFO, shost, "Discovery Initiated\n");
cs->next_evseq = 0;
cs->needs_update = true;
queue_delayed_work(cs->work_q, &cs->monitor_work, 1);
flush_delayed_work(&cs->monitor_work);
shost_printk(KERN_INFO, shost, "Discovery Completed\n");
return count;
}
static DEVICE_ATTR_WO(discovery);
static ssize_t flush_cache_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
unsigned char status;
status = myrs_dev_op(cs, MYRS_IOCTL_FLUSH_DEVICE_DATA,
MYRS_RAID_CONTROLLER);
if (status == MYRS_STATUS_SUCCESS) {
shost_printk(KERN_INFO, shost, "Cache Flush Completed\n");
return count;
}
shost_printk(KERN_INFO, shost,
"Cache Flush failed, status 0x%02x\n", status);
return -EIO;
}
static DEVICE_ATTR_WO(flush_cache);
static ssize_t disable_enclosure_messages_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct myrs_hba *cs = shost_priv(shost);
return snprintf(buf, 3, "%d\n", cs->disable_enc_msg);
}
static ssize_t disable_enclosure_messages_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
int value, ret;
ret = kstrtoint(buf, 0, &value);
if (ret)
return ret;
if (value > 2)
return -EINVAL;
cs->disable_enc_msg = value;
return count;
}
static DEVICE_ATTR_RW(disable_enclosure_messages);
static struct attribute *myrs_shost_attrs[] = {
&dev_attr_serial.attr,
&dev_attr_ctlr_num.attr,
&dev_attr_processor.attr,
&dev_attr_model.attr,
&dev_attr_ctlr_type.attr,
&dev_attr_cache_size.attr,
&dev_attr_firmware.attr,
&dev_attr_discovery.attr,
&dev_attr_flush_cache.attr,
&dev_attr_disable_enclosure_messages.attr,
NULL,
};
ATTRIBUTE_GROUPS(myrs_shost);
/*
* SCSI midlayer interface
*/
static int myrs_host_reset(struct scsi_cmnd *scmd)
{
struct Scsi_Host *shost = scmd->device->host;
struct myrs_hba *cs = shost_priv(shost);
cs->reset(cs->io_base);
return SUCCESS;
}
static void myrs_mode_sense(struct myrs_hba *cs, struct scsi_cmnd *scmd,
struct myrs_ldev_info *ldev_info)
{
unsigned char modes[32], *mode_pg;
bool dbd;
size_t mode_len;
dbd = (scmd->cmnd[1] & 0x08) == 0x08;
if (dbd) {
mode_len = 24;
mode_pg = &modes[4];
} else {
mode_len = 32;
mode_pg = &modes[12];
}
memset(modes, 0, sizeof(modes));
modes[0] = mode_len - 1;
modes[2] = 0x10; /* Enable FUA */
if (ldev_info->ldev_control.wce == MYRS_LOGICALDEVICE_RO)
modes[2] |= 0x80;
if (!dbd) {
unsigned char *block_desc = &modes[4];
modes[3] = 8;
put_unaligned_be32(ldev_info->cfg_devsize, &block_desc[0]);
put_unaligned_be32(ldev_info->devsize_bytes, &block_desc[5]);
}
mode_pg[0] = 0x08;
mode_pg[1] = 0x12;
if (ldev_info->ldev_control.rce == MYRS_READCACHE_DISABLED)
mode_pg[2] |= 0x01;
if (ldev_info->ldev_control.wce == MYRS_WRITECACHE_ENABLED ||
ldev_info->ldev_control.wce == MYRS_INTELLIGENT_WRITECACHE_ENABLED)
mode_pg[2] |= 0x04;
if (ldev_info->cacheline_size) {
mode_pg[2] |= 0x08;
put_unaligned_be16(1 << ldev_info->cacheline_size,
&mode_pg[14]);
}
scsi_sg_copy_from_buffer(scmd, modes, mode_len);
}
static int myrs_queuecommand(struct Scsi_Host *shost,
struct scsi_cmnd *scmd)
{
struct request *rq = scsi_cmd_to_rq(scmd);
struct myrs_hba *cs = shost_priv(shost);
struct myrs_cmdblk *cmd_blk = scsi_cmd_priv(scmd);
union myrs_cmd_mbox *mbox = &cmd_blk->mbox;
struct scsi_device *sdev = scmd->device;
union myrs_sgl *hw_sge;
dma_addr_t sense_addr;
struct scatterlist *sgl;
unsigned long flags, timeout;
int nsge;
if (!scmd->device->hostdata) {
scmd->result = (DID_NO_CONNECT << 16);
scsi_done(scmd);
return 0;
}
switch (scmd->cmnd[0]) {
case REPORT_LUNS:
scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x20, 0x0);
scsi_done(scmd);
return 0;
case MODE_SENSE:
if (scmd->device->channel >= cs->ctlr_info->physchan_present) {
struct myrs_ldev_info *ldev_info = sdev->hostdata;
if ((scmd->cmnd[2] & 0x3F) != 0x3F &&
(scmd->cmnd[2] & 0x3F) != 0x08) {
/* Illegal request, invalid field in CDB */
scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0);
} else {
myrs_mode_sense(cs, scmd, ldev_info);
scmd->result = (DID_OK << 16);
}
scsi_done(scmd);
return 0;
}
break;
}
myrs_reset_cmd(cmd_blk);
cmd_blk->sense = dma_pool_alloc(cs->sense_pool, GFP_ATOMIC,
&sense_addr);
if (!cmd_blk->sense)
return SCSI_MLQUEUE_HOST_BUSY;
cmd_blk->sense_addr = sense_addr;
timeout = rq->timeout;
if (scmd->cmd_len <= 10) {
if (scmd->device->channel >= cs->ctlr_info->physchan_present) {
struct myrs_ldev_info *ldev_info = sdev->hostdata;
mbox->SCSI_10.opcode = MYRS_CMD_OP_SCSI_10;
mbox->SCSI_10.pdev.lun = ldev_info->lun;
mbox->SCSI_10.pdev.target = ldev_info->target;
mbox->SCSI_10.pdev.channel = ldev_info->channel;
mbox->SCSI_10.pdev.ctlr = 0;
} else {
mbox->SCSI_10.opcode = MYRS_CMD_OP_SCSI_10_PASSTHRU;
mbox->SCSI_10.pdev.lun = sdev->lun;
mbox->SCSI_10.pdev.target = sdev->id;
mbox->SCSI_10.pdev.channel = sdev->channel;
}
mbox->SCSI_10.id = rq->tag + 3;
mbox->SCSI_10.control.dma_ctrl_to_host =
(scmd->sc_data_direction == DMA_FROM_DEVICE);
if (rq->cmd_flags & REQ_FUA)
mbox->SCSI_10.control.fua = true;
mbox->SCSI_10.dma_size = scsi_bufflen(scmd);
mbox->SCSI_10.sense_addr = cmd_blk->sense_addr;
mbox->SCSI_10.sense_len = MYRS_SENSE_SIZE;
mbox->SCSI_10.cdb_len = scmd->cmd_len;
if (timeout > 60) {
mbox->SCSI_10.tmo.tmo_scale = MYRS_TMO_SCALE_MINUTES;
mbox->SCSI_10.tmo.tmo_val = timeout / 60;
} else {
mbox->SCSI_10.tmo.tmo_scale = MYRS_TMO_SCALE_SECONDS;
mbox->SCSI_10.tmo.tmo_val = timeout;
}
memcpy(&mbox->SCSI_10.cdb, scmd->cmnd, scmd->cmd_len);
hw_sge = &mbox->SCSI_10.dma_addr;
cmd_blk->dcdb = NULL;
} else {
dma_addr_t dcdb_dma;
cmd_blk->dcdb = dma_pool_alloc(cs->dcdb_pool, GFP_ATOMIC,
&dcdb_dma);
if (!cmd_blk->dcdb) {
dma_pool_free(cs->sense_pool, cmd_blk->sense,
cmd_blk->sense_addr);
cmd_blk->sense = NULL;
cmd_blk->sense_addr = 0;
return SCSI_MLQUEUE_HOST_BUSY;
}
cmd_blk->dcdb_dma = dcdb_dma;
if (scmd->device->channel >= cs->ctlr_info->physchan_present) {
struct myrs_ldev_info *ldev_info = sdev->hostdata;
mbox->SCSI_255.opcode = MYRS_CMD_OP_SCSI_256;
mbox->SCSI_255.pdev.lun = ldev_info->lun;
mbox->SCSI_255.pdev.target = ldev_info->target;
mbox->SCSI_255.pdev.channel = ldev_info->channel;
mbox->SCSI_255.pdev.ctlr = 0;
} else {
mbox->SCSI_255.opcode = MYRS_CMD_OP_SCSI_255_PASSTHRU;
mbox->SCSI_255.pdev.lun = sdev->lun;
mbox->SCSI_255.pdev.target = sdev->id;
mbox->SCSI_255.pdev.channel = sdev->channel;
}
mbox->SCSI_255.id = rq->tag + 3;
mbox->SCSI_255.control.dma_ctrl_to_host =
(scmd->sc_data_direction == DMA_FROM_DEVICE);
if (rq->cmd_flags & REQ_FUA)
mbox->SCSI_255.control.fua = true;
mbox->SCSI_255.dma_size = scsi_bufflen(scmd);
mbox->SCSI_255.sense_addr = cmd_blk->sense_addr;
mbox->SCSI_255.sense_len = MYRS_SENSE_SIZE;
mbox->SCSI_255.cdb_len = scmd->cmd_len;
mbox->SCSI_255.cdb_addr = cmd_blk->dcdb_dma;
if (timeout > 60) {
mbox->SCSI_255.tmo.tmo_scale = MYRS_TMO_SCALE_MINUTES;
mbox->SCSI_255.tmo.tmo_val = timeout / 60;
} else {
mbox->SCSI_255.tmo.tmo_scale = MYRS_TMO_SCALE_SECONDS;
mbox->SCSI_255.tmo.tmo_val = timeout;
}
memcpy(cmd_blk->dcdb, scmd->cmnd, scmd->cmd_len);
hw_sge = &mbox->SCSI_255.dma_addr;
}
if (scmd->sc_data_direction == DMA_NONE)
goto submit;
nsge = scsi_dma_map(scmd);
if (nsge == 1) {
sgl = scsi_sglist(scmd);
hw_sge->sge[0].sge_addr = (u64)sg_dma_address(sgl);
hw_sge->sge[0].sge_count = (u64)sg_dma_len(sgl);
} else {
struct myrs_sge *hw_sgl;
dma_addr_t hw_sgl_addr;
int i;
if (nsge > 2) {
hw_sgl = dma_pool_alloc(cs->sg_pool, GFP_ATOMIC,
&hw_sgl_addr);
if (WARN_ON(!hw_sgl)) {
if (cmd_blk->dcdb) {
dma_pool_free(cs->dcdb_pool,
cmd_blk->dcdb,
cmd_blk->dcdb_dma);
cmd_blk->dcdb = NULL;
cmd_blk->dcdb_dma = 0;
}
dma_pool_free(cs->sense_pool,
cmd_blk->sense,
cmd_blk->sense_addr);
cmd_blk->sense = NULL;
cmd_blk->sense_addr = 0;
return SCSI_MLQUEUE_HOST_BUSY;
}
cmd_blk->sgl = hw_sgl;
cmd_blk->sgl_addr = hw_sgl_addr;
if (scmd->cmd_len <= 10)
mbox->SCSI_10.control.add_sge_mem = true;
else
mbox->SCSI_255.control.add_sge_mem = true;
hw_sge->ext.sge0_len = nsge;
hw_sge->ext.sge0_addr = cmd_blk->sgl_addr;
} else
hw_sgl = hw_sge->sge;
scsi_for_each_sg(scmd, sgl, nsge, i) {
if (WARN_ON(!hw_sgl)) {
scsi_dma_unmap(scmd);
scmd->result = (DID_ERROR << 16);
scsi_done(scmd);
return 0;
}
hw_sgl->sge_addr = (u64)sg_dma_address(sgl);
hw_sgl->sge_count = (u64)sg_dma_len(sgl);
hw_sgl++;
}
}
submit:
spin_lock_irqsave(&cs->queue_lock, flags);
myrs_qcmd(cs, cmd_blk);
spin_unlock_irqrestore(&cs->queue_lock, flags);
return 0;
}
static unsigned short myrs_translate_ldev(struct myrs_hba *cs,
struct scsi_device *sdev)
{
unsigned short ldev_num;
unsigned int chan_offset =
sdev->channel - cs->ctlr_info->physchan_present;
ldev_num = sdev->id + chan_offset * sdev->host->max_id;
return ldev_num;
}
static int myrs_slave_alloc(struct scsi_device *sdev)
{
struct myrs_hba *cs = shost_priv(sdev->host);
unsigned char status;
if (sdev->channel > sdev->host->max_channel)
return 0;
if (sdev->channel >= cs->ctlr_info->physchan_present) {
struct myrs_ldev_info *ldev_info;
unsigned short ldev_num;
if (sdev->lun > 0)
return -ENXIO;
ldev_num = myrs_translate_ldev(cs, sdev);
ldev_info = kzalloc(sizeof(*ldev_info), GFP_KERNEL);
if (!ldev_info)
return -ENOMEM;
status = myrs_get_ldev_info(cs, ldev_num, ldev_info);
if (status != MYRS_STATUS_SUCCESS) {
sdev->hostdata = NULL;
kfree(ldev_info);
} else {
enum raid_level level;
dev_dbg(&sdev->sdev_gendev,
"Logical device mapping %d:%d:%d -> %d\n",
ldev_info->channel, ldev_info->target,
ldev_info->lun, ldev_info->ldev_num);
sdev->hostdata = ldev_info;
switch (ldev_info->raid_level) {
case MYRS_RAID_LEVEL0:
level = RAID_LEVEL_LINEAR;
break;
case MYRS_RAID_LEVEL1:
level = RAID_LEVEL_1;
break;
case MYRS_RAID_LEVEL3:
case MYRS_RAID_LEVEL3F:
case MYRS_RAID_LEVEL3L:
level = RAID_LEVEL_3;
break;
case MYRS_RAID_LEVEL5:
case MYRS_RAID_LEVEL5L:
level = RAID_LEVEL_5;
break;
case MYRS_RAID_LEVEL6:
level = RAID_LEVEL_6;
break;
case MYRS_RAID_LEVELE:
case MYRS_RAID_NEWSPAN:
case MYRS_RAID_SPAN:
level = RAID_LEVEL_LINEAR;
break;
case MYRS_RAID_JBOD:
level = RAID_LEVEL_JBOD;
break;
default:
level = RAID_LEVEL_UNKNOWN;
break;
}
raid_set_level(myrs_raid_template,
&sdev->sdev_gendev, level);
if (ldev_info->dev_state != MYRS_DEVICE_ONLINE) {
const char *name;
name = myrs_devstate_name(ldev_info->dev_state);
sdev_printk(KERN_DEBUG, sdev,
"logical device in state %s\n",
name ? name : "Invalid");
}
}
} else {
struct myrs_pdev_info *pdev_info;
pdev_info = kzalloc(sizeof(*pdev_info), GFP_KERNEL);
if (!pdev_info)
return -ENOMEM;
status = myrs_get_pdev_info(cs, sdev->channel,
sdev->id, sdev->lun,
pdev_info);
if (status != MYRS_STATUS_SUCCESS) {
sdev->hostdata = NULL;
kfree(pdev_info);
return -ENXIO;
}
sdev->hostdata = pdev_info;
}
return 0;
}
static int myrs_slave_configure(struct scsi_device *sdev)
{
struct myrs_hba *cs = shost_priv(sdev->host);
struct myrs_ldev_info *ldev_info;
if (sdev->channel > sdev->host->max_channel)
return -ENXIO;
if (sdev->channel < cs->ctlr_info->physchan_present) {
/* Skip HBA device */
if (sdev->type == TYPE_RAID)
return -ENXIO;
sdev->no_uld_attach = 1;
return 0;
}
if (sdev->lun != 0)
return -ENXIO;
ldev_info = sdev->hostdata;
if (!ldev_info)
return -ENXIO;
if (ldev_info->ldev_control.wce == MYRS_WRITECACHE_ENABLED ||
ldev_info->ldev_control.wce == MYRS_INTELLIGENT_WRITECACHE_ENABLED)
sdev->wce_default_on = 1;
sdev->tagged_supported = 1;
return 0;
}
static void myrs_slave_destroy(struct scsi_device *sdev)
{
kfree(sdev->hostdata);
}
static const struct scsi_host_template myrs_template = {
.module = THIS_MODULE,
.name = "DAC960",
.proc_name = "myrs",
.queuecommand = myrs_queuecommand,
.eh_host_reset_handler = myrs_host_reset,
.slave_alloc = myrs_slave_alloc,
.slave_configure = myrs_slave_configure,
.slave_destroy = myrs_slave_destroy,
.cmd_size = sizeof(struct myrs_cmdblk),
.shost_groups = myrs_shost_groups,
.sdev_groups = myrs_sdev_groups,
.this_id = -1,
};
static struct myrs_hba *myrs_alloc_host(struct pci_dev *pdev,
const struct pci_device_id *entry)
{
struct Scsi_Host *shost;
struct myrs_hba *cs;
shost = scsi_host_alloc(&myrs_template, sizeof(struct myrs_hba));
if (!shost)
return NULL;
shost->max_cmd_len = 16;
shost->max_lun = 256;
cs = shost_priv(shost);
mutex_init(&cs->dcmd_mutex);
mutex_init(&cs->cinfo_mutex);
cs->host = shost;
return cs;
}
/*
* RAID template functions
*/
/**
* myrs_is_raid - return boolean indicating device is raid volume
* @dev: the device struct object
*/
static int
myrs_is_raid(struct device *dev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
return (sdev->channel >= cs->ctlr_info->physchan_present) ? 1 : 0;
}
/**
* myrs_get_resync - get raid volume resync percent complete
* @dev: the device struct object
*/
static void
myrs_get_resync(struct device *dev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
struct myrs_ldev_info *ldev_info = sdev->hostdata;
u64 percent_complete = 0;
if (sdev->channel < cs->ctlr_info->physchan_present || !ldev_info)
return;
if (ldev_info->rbld_active) {
unsigned short ldev_num = ldev_info->ldev_num;
myrs_get_ldev_info(cs, ldev_num, ldev_info);
percent_complete = ldev_info->rbld_lba * 100;
do_div(percent_complete, ldev_info->cfg_devsize);
}
raid_set_resync(myrs_raid_template, dev, percent_complete);
}
/**
* myrs_get_state - get raid volume status
* @dev: the device struct object
*/
static void
myrs_get_state(struct device *dev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct myrs_hba *cs = shost_priv(sdev->host);
struct myrs_ldev_info *ldev_info = sdev->hostdata;
enum raid_state state = RAID_STATE_UNKNOWN;
if (sdev->channel < cs->ctlr_info->physchan_present || !ldev_info)
state = RAID_STATE_UNKNOWN;
else {
switch (ldev_info->dev_state) {
case MYRS_DEVICE_ONLINE:
state = RAID_STATE_ACTIVE;
break;
case MYRS_DEVICE_SUSPECTED_CRITICAL:
case MYRS_DEVICE_CRITICAL:
state = RAID_STATE_DEGRADED;
break;
case MYRS_DEVICE_REBUILD:
state = RAID_STATE_RESYNCING;
break;
case MYRS_DEVICE_UNCONFIGURED:
case MYRS_DEVICE_INVALID_STATE:
state = RAID_STATE_UNKNOWN;
break;
default:
state = RAID_STATE_OFFLINE;
}
}
raid_set_state(myrs_raid_template, dev, state);
}
static struct raid_function_template myrs_raid_functions = {
.cookie = &myrs_template,
.is_raid = myrs_is_raid,
.get_resync = myrs_get_resync,
.get_state = myrs_get_state,
};
/*
* PCI interface functions
*/
static void myrs_flush_cache(struct myrs_hba *cs)
{
myrs_dev_op(cs, MYRS_IOCTL_FLUSH_DEVICE_DATA, MYRS_RAID_CONTROLLER);
}
static void myrs_handle_scsi(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk,
struct scsi_cmnd *scmd)
{
unsigned char status;
if (!cmd_blk)
return;
scsi_dma_unmap(scmd);
status = cmd_blk->status;
if (cmd_blk->sense) {
if (status == MYRS_STATUS_FAILED && cmd_blk->sense_len) {
unsigned int sense_len = SCSI_SENSE_BUFFERSIZE;
if (sense_len > cmd_blk->sense_len)
sense_len = cmd_blk->sense_len;
memcpy(scmd->sense_buffer, cmd_blk->sense, sense_len);
}
dma_pool_free(cs->sense_pool, cmd_blk->sense,
cmd_blk->sense_addr);
cmd_blk->sense = NULL;
cmd_blk->sense_addr = 0;
}
if (cmd_blk->dcdb) {
dma_pool_free(cs->dcdb_pool, cmd_blk->dcdb,
cmd_blk->dcdb_dma);
cmd_blk->dcdb = NULL;
cmd_blk->dcdb_dma = 0;
}
if (cmd_blk->sgl) {
dma_pool_free(cs->sg_pool, cmd_blk->sgl,
cmd_blk->sgl_addr);
cmd_blk->sgl = NULL;
cmd_blk->sgl_addr = 0;
}
if (cmd_blk->residual)
scsi_set_resid(scmd, cmd_blk->residual);
if (status == MYRS_STATUS_DEVICE_NON_RESPONSIVE ||
status == MYRS_STATUS_DEVICE_NON_RESPONSIVE2)
scmd->result = (DID_BAD_TARGET << 16);
else
scmd->result = (DID_OK << 16) | status;
scsi_done(scmd);
}
static void myrs_handle_cmdblk(struct myrs_hba *cs, struct myrs_cmdblk *cmd_blk)
{
if (!cmd_blk)
return;
if (cmd_blk->complete) {
complete(cmd_blk->complete);
cmd_blk->complete = NULL;
}
}
static void myrs_monitor(struct work_struct *work)
{
struct myrs_hba *cs = container_of(work, struct myrs_hba,
monitor_work.work);
struct Scsi_Host *shost = cs->host;
struct myrs_ctlr_info *info = cs->ctlr_info;
unsigned int epoch = cs->fwstat_buf->epoch;
unsigned long interval = MYRS_PRIMARY_MONITOR_INTERVAL;
unsigned char status;
dev_dbg(&shost->shost_gendev, "monitor tick\n");
status = myrs_get_fwstatus(cs);
if (cs->needs_update) {
cs->needs_update = false;
mutex_lock(&cs->cinfo_mutex);
status = myrs_get_ctlr_info(cs);
mutex_unlock(&cs->cinfo_mutex);
}
if (cs->fwstat_buf->next_evseq - cs->next_evseq > 0) {
status = myrs_get_event(cs, cs->next_evseq,
cs->event_buf);
if (status == MYRS_STATUS_SUCCESS) {
myrs_log_event(cs, cs->event_buf);
cs->next_evseq++;
interval = 1;
}
}
if (time_after(jiffies, cs->secondary_monitor_time
+ MYRS_SECONDARY_MONITOR_INTERVAL))
cs->secondary_monitor_time = jiffies;
if (info->bg_init_active +
info->ldev_init_active +
info->pdev_init_active +
info->cc_active +
info->rbld_active +
info->exp_active != 0) {
struct scsi_device *sdev;
shost_for_each_device(sdev, shost) {
struct myrs_ldev_info *ldev_info;
int ldev_num;
if (sdev->channel < info->physchan_present)
continue;
ldev_info = sdev->hostdata;
if (!ldev_info)
continue;
ldev_num = ldev_info->ldev_num;
myrs_get_ldev_info(cs, ldev_num, ldev_info);
}
cs->needs_update = true;
}
if (epoch == cs->epoch &&
cs->fwstat_buf->next_evseq == cs->next_evseq &&
(cs->needs_update == false ||
time_before(jiffies, cs->primary_monitor_time
+ MYRS_PRIMARY_MONITOR_INTERVAL))) {
interval = MYRS_SECONDARY_MONITOR_INTERVAL;
}
if (interval > 1)
cs->primary_monitor_time = jiffies;
queue_delayed_work(cs->work_q, &cs->monitor_work, interval);
}
static bool myrs_create_mempools(struct pci_dev *pdev, struct myrs_hba *cs)
{
struct Scsi_Host *shost = cs->host;
size_t elem_size, elem_align;
elem_align = sizeof(struct myrs_sge);
elem_size = shost->sg_tablesize * elem_align;
cs->sg_pool = dma_pool_create("myrs_sg", &pdev->dev,
elem_size, elem_align, 0);
if (cs->sg_pool == NULL) {
shost_printk(KERN_ERR, shost,
"Failed to allocate SG pool\n");
return false;
}
cs->sense_pool = dma_pool_create("myrs_sense", &pdev->dev,
MYRS_SENSE_SIZE, sizeof(int), 0);
if (cs->sense_pool == NULL) {
dma_pool_destroy(cs->sg_pool);
cs->sg_pool = NULL;
shost_printk(KERN_ERR, shost,
"Failed to allocate sense data pool\n");
return false;
}
cs->dcdb_pool = dma_pool_create("myrs_dcdb", &pdev->dev,
MYRS_DCDB_SIZE,
sizeof(unsigned char), 0);
if (!cs->dcdb_pool) {
dma_pool_destroy(cs->sg_pool);
cs->sg_pool = NULL;
dma_pool_destroy(cs->sense_pool);
cs->sense_pool = NULL;
shost_printk(KERN_ERR, shost,
"Failed to allocate DCDB pool\n");
return false;
}
snprintf(cs->work_q_name, sizeof(cs->work_q_name),
"myrs_wq_%d", shost->host_no);
cs->work_q = create_singlethread_workqueue(cs->work_q_name);
if (!cs->work_q) {
dma_pool_destroy(cs->dcdb_pool);
cs->dcdb_pool = NULL;
dma_pool_destroy(cs->sg_pool);
cs->sg_pool = NULL;
dma_pool_destroy(cs->sense_pool);
cs->sense_pool = NULL;
shost_printk(KERN_ERR, shost,
"Failed to create workqueue\n");
return false;
}
/* Initialize the Monitoring Timer. */
INIT_DELAYED_WORK(&cs->monitor_work, myrs_monitor);
queue_delayed_work(cs->work_q, &cs->monitor_work, 1);
return true;
}
static void myrs_destroy_mempools(struct myrs_hba *cs)
{
cancel_delayed_work_sync(&cs->monitor_work);
destroy_workqueue(cs->work_q);
dma_pool_destroy(cs->sg_pool);
dma_pool_destroy(cs->dcdb_pool);
dma_pool_destroy(cs->sense_pool);
}
static void myrs_unmap(struct myrs_hba *cs)
{
kfree(cs->event_buf);
kfree(cs->ctlr_info);
if (cs->fwstat_buf) {
dma_free_coherent(&cs->pdev->dev, sizeof(struct myrs_fwstat),
cs->fwstat_buf, cs->fwstat_addr);
cs->fwstat_buf = NULL;
}
if (cs->first_stat_mbox) {
dma_free_coherent(&cs->pdev->dev, cs->stat_mbox_size,
cs->first_stat_mbox, cs->stat_mbox_addr);
cs->first_stat_mbox = NULL;
}
if (cs->first_cmd_mbox) {
dma_free_coherent(&cs->pdev->dev, cs->cmd_mbox_size,
cs->first_cmd_mbox, cs->cmd_mbox_addr);
cs->first_cmd_mbox = NULL;
}
}
static void myrs_cleanup(struct myrs_hba *cs)
{
struct pci_dev *pdev = cs->pdev;
/* Free the memory mailbox, status, and related structures */
myrs_unmap(cs);
if (cs->mmio_base) {
if (cs->disable_intr)
cs->disable_intr(cs);
iounmap(cs->mmio_base);
cs->mmio_base = NULL;
}
if (cs->irq)
free_irq(cs->irq, cs);
if (cs->io_addr)
release_region(cs->io_addr, 0x80);
pci_set_drvdata(pdev, NULL);
pci_disable_device(pdev);
scsi_host_put(cs->host);
}
static struct myrs_hba *myrs_detect(struct pci_dev *pdev,
const struct pci_device_id *entry)
{
struct myrs_privdata *privdata =
(struct myrs_privdata *)entry->driver_data;
irq_handler_t irq_handler = privdata->irq_handler;
unsigned int mmio_size = privdata->mmio_size;
struct myrs_hba *cs = NULL;
cs = myrs_alloc_host(pdev, entry);
if (!cs) {
dev_err(&pdev->dev, "Unable to allocate Controller\n");
return NULL;
}
cs->pdev = pdev;
if (pci_enable_device(pdev))
goto Failure;
cs->pci_addr = pci_resource_start(pdev, 0);
pci_set_drvdata(pdev, cs);
spin_lock_init(&cs->queue_lock);
/* Map the Controller Register Window. */
if (mmio_size < PAGE_SIZE)
mmio_size = PAGE_SIZE;
cs->mmio_base = ioremap(cs->pci_addr & PAGE_MASK, mmio_size);
if (cs->mmio_base == NULL) {
dev_err(&pdev->dev,
"Unable to map Controller Register Window\n");
goto Failure;
}
cs->io_base = cs->mmio_base + (cs->pci_addr & ~PAGE_MASK);
if (privdata->hw_init(pdev, cs, cs->io_base))
goto Failure;
/* Acquire shared access to the IRQ Channel. */
if (request_irq(pdev->irq, irq_handler, IRQF_SHARED, "myrs", cs) < 0) {
dev_err(&pdev->dev,
"Unable to acquire IRQ Channel %d\n", pdev->irq);
goto Failure;
}
cs->irq = pdev->irq;
return cs;
Failure:
dev_err(&pdev->dev,
"Failed to initialize Controller\n");
myrs_cleanup(cs);
return NULL;
}
/*
* myrs_err_status reports Controller BIOS Messages passed through
* the Error Status Register when the driver performs the BIOS handshaking.
* It returns true for fatal errors and false otherwise.
*/
static bool myrs_err_status(struct myrs_hba *cs, unsigned char status,
unsigned char parm0, unsigned char parm1)
{
struct pci_dev *pdev = cs->pdev;
switch (status) {
case 0x00:
dev_info(&pdev->dev,
"Physical Device %d:%d Not Responding\n",
parm1, parm0);
break;
case 0x08:
dev_notice(&pdev->dev, "Spinning Up Drives\n");
break;
case 0x30:
dev_notice(&pdev->dev, "Configuration Checksum Error\n");
break;
case 0x60:
dev_notice(&pdev->dev, "Mirror Race Recovery Failed\n");
break;
case 0x70:
dev_notice(&pdev->dev, "Mirror Race Recovery In Progress\n");
break;
case 0x90:
dev_notice(&pdev->dev, "Physical Device %d:%d COD Mismatch\n",
parm1, parm0);
break;
case 0xA0:
dev_notice(&pdev->dev, "Logical Drive Installation Aborted\n");
break;
case 0xB0:
dev_notice(&pdev->dev, "Mirror Race On A Critical Logical Drive\n");
break;
case 0xD0:
dev_notice(&pdev->dev, "New Controller Configuration Found\n");
break;
case 0xF0:
dev_err(&pdev->dev, "Fatal Memory Parity Error\n");
return true;
default:
dev_err(&pdev->dev, "Unknown Initialization Error %02X\n",
status);
return true;
}
return false;
}
/*
* Hardware-specific functions
*/
/*
* DAC960 GEM Series Controllers.
*/
static inline void DAC960_GEM_hw_mbox_new_cmd(void __iomem *base)
{
__le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_NEW_CMD << 24);
writel(val, base + DAC960_GEM_IDB_READ_OFFSET);
}
static inline void DAC960_GEM_ack_hw_mbox_status(void __iomem *base)
{
__le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_ACK_STS << 24);
writel(val, base + DAC960_GEM_IDB_CLEAR_OFFSET);
}
static inline void DAC960_GEM_reset_ctrl(void __iomem *base)
{
__le32 val = cpu_to_le32(DAC960_GEM_IDB_CTRL_RESET << 24);
writel(val, base + DAC960_GEM_IDB_READ_OFFSET);
}
static inline void DAC960_GEM_mem_mbox_new_cmd(void __iomem *base)
{
__le32 val = cpu_to_le32(DAC960_GEM_IDB_HWMBOX_NEW_CMD << 24);
writel(val, base + DAC960_GEM_IDB_READ_OFFSET);
}
static inline bool DAC960_GEM_hw_mbox_is_full(void __iomem *base)
{
__le32 val;
val = readl(base + DAC960_GEM_IDB_READ_OFFSET);
return (le32_to_cpu(val) >> 24) & DAC960_GEM_IDB_HWMBOX_FULL;
}
static inline bool DAC960_GEM_init_in_progress(void __iomem *base)
{
__le32 val;
val = readl(base + DAC960_GEM_IDB_READ_OFFSET);
return (le32_to_cpu(val) >> 24) & DAC960_GEM_IDB_INIT_IN_PROGRESS;
}
static inline void DAC960_GEM_ack_hw_mbox_intr(void __iomem *base)
{
__le32 val = cpu_to_le32(DAC960_GEM_ODB_HWMBOX_ACK_IRQ << 24);
writel(val, base + DAC960_GEM_ODB_CLEAR_OFFSET);
}
static inline void DAC960_GEM_ack_intr(void __iomem *base)
{
__le32 val = cpu_to_le32((DAC960_GEM_ODB_HWMBOX_ACK_IRQ |
DAC960_GEM_ODB_MMBOX_ACK_IRQ) << 24);
writel(val, base + DAC960_GEM_ODB_CLEAR_OFFSET);
}
static inline bool DAC960_GEM_hw_mbox_status_available(void __iomem *base)
{
__le32 val;
val = readl(base + DAC960_GEM_ODB_READ_OFFSET);
return (le32_to_cpu(val) >> 24) & DAC960_GEM_ODB_HWMBOX_STS_AVAIL;
}
static inline void DAC960_GEM_enable_intr(void __iomem *base)
{
__le32 val = cpu_to_le32((DAC960_GEM_IRQMASK_HWMBOX_IRQ |
DAC960_GEM_IRQMASK_MMBOX_IRQ) << 24);
writel(val, base + DAC960_GEM_IRQMASK_CLEAR_OFFSET);
}
static inline void DAC960_GEM_disable_intr(void __iomem *base)
{
__le32 val = 0;
writel(val, base + DAC960_GEM_IRQMASK_READ_OFFSET);
}
static inline void DAC960_GEM_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox,
union myrs_cmd_mbox *mbox)
{
memcpy(&mem_mbox->words[1], &mbox->words[1],
sizeof(union myrs_cmd_mbox) - sizeof(unsigned int));
/* Barrier to avoid reordering */
wmb();
mem_mbox->words[0] = mbox->words[0];
/* Barrier to force PCI access */
mb();
}
static inline void DAC960_GEM_write_hw_mbox(void __iomem *base,
dma_addr_t cmd_mbox_addr)
{
dma_addr_writeql(cmd_mbox_addr, base + DAC960_GEM_CMDMBX_OFFSET);
}
static inline unsigned char DAC960_GEM_read_cmd_status(void __iomem *base)
{
return readw(base + DAC960_GEM_CMDSTS_OFFSET + 2);
}
static inline bool
DAC960_GEM_read_error_status(void __iomem *base, unsigned char *error,
unsigned char *param0, unsigned char *param1)
{
__le32 val;
val = readl(base + DAC960_GEM_ERRSTS_READ_OFFSET);
if (!((le32_to_cpu(val) >> 24) & DAC960_GEM_ERRSTS_PENDING))
return false;
*error = val & ~(DAC960_GEM_ERRSTS_PENDING << 24);
*param0 = readb(base + DAC960_GEM_CMDMBX_OFFSET + 0);
*param1 = readb(base + DAC960_GEM_CMDMBX_OFFSET + 1);
writel(0x03000000, base + DAC960_GEM_ERRSTS_CLEAR_OFFSET);
return true;
}
static inline unsigned char
DAC960_GEM_mbox_init(void __iomem *base, dma_addr_t mbox_addr)
{
unsigned char status;
while (DAC960_GEM_hw_mbox_is_full(base))
udelay(1);
DAC960_GEM_write_hw_mbox(base, mbox_addr);
DAC960_GEM_hw_mbox_new_cmd(base);
while (!DAC960_GEM_hw_mbox_status_available(base))
udelay(1);
status = DAC960_GEM_read_cmd_status(base);
DAC960_GEM_ack_hw_mbox_intr(base);
DAC960_GEM_ack_hw_mbox_status(base);
return status;
}
static int DAC960_GEM_hw_init(struct pci_dev *pdev,
struct myrs_hba *cs, void __iomem *base)
{
int timeout = 0;
unsigned char status, parm0, parm1;
DAC960_GEM_disable_intr(base);
DAC960_GEM_ack_hw_mbox_status(base);
udelay(1000);
while (DAC960_GEM_init_in_progress(base) &&
timeout < MYRS_MAILBOX_TIMEOUT) {
if (DAC960_GEM_read_error_status(base, &status,
&parm0, &parm1) &&
myrs_err_status(cs, status, parm0, parm1))
return -EIO;
udelay(10);
timeout++;
}
if (timeout == MYRS_MAILBOX_TIMEOUT) {
dev_err(&pdev->dev,
"Timeout waiting for Controller Initialisation\n");
return -ETIMEDOUT;
}
if (!myrs_enable_mmio_mbox(cs, DAC960_GEM_mbox_init)) {
dev_err(&pdev->dev,
"Unable to Enable Memory Mailbox Interface\n");
DAC960_GEM_reset_ctrl(base);
return -EAGAIN;
}
DAC960_GEM_enable_intr(base);
cs->write_cmd_mbox = DAC960_GEM_write_cmd_mbox;
cs->get_cmd_mbox = DAC960_GEM_mem_mbox_new_cmd;
cs->disable_intr = DAC960_GEM_disable_intr;
cs->reset = DAC960_GEM_reset_ctrl;
return 0;
}
static irqreturn_t DAC960_GEM_intr_handler(int irq, void *arg)
{
struct myrs_hba *cs = arg;
void __iomem *base = cs->io_base;
struct myrs_stat_mbox *next_stat_mbox;
unsigned long flags;
spin_lock_irqsave(&cs->queue_lock, flags);
DAC960_GEM_ack_intr(base);
next_stat_mbox = cs->next_stat_mbox;
while (next_stat_mbox->id > 0) {
unsigned short id = next_stat_mbox->id;
struct scsi_cmnd *scmd = NULL;
struct myrs_cmdblk *cmd_blk = NULL;
if (id == MYRS_DCMD_TAG)
cmd_blk = &cs->dcmd_blk;
else if (id == MYRS_MCMD_TAG)
cmd_blk = &cs->mcmd_blk;
else {
scmd = scsi_host_find_tag(cs->host, id - 3);
if (scmd)
cmd_blk = scsi_cmd_priv(scmd);
}
if (cmd_blk) {
cmd_blk->status = next_stat_mbox->status;
cmd_blk->sense_len = next_stat_mbox->sense_len;
cmd_blk->residual = next_stat_mbox->residual;
} else
dev_err(&cs->pdev->dev,
"Unhandled command completion %d\n", id);
memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox));
if (++next_stat_mbox > cs->last_stat_mbox)
next_stat_mbox = cs->first_stat_mbox;
if (cmd_blk) {
if (id < 3)
myrs_handle_cmdblk(cs, cmd_blk);
else
myrs_handle_scsi(cs, cmd_blk, scmd);
}
}
cs->next_stat_mbox = next_stat_mbox;
spin_unlock_irqrestore(&cs->queue_lock, flags);
return IRQ_HANDLED;
}
static struct myrs_privdata DAC960_GEM_privdata = {
.hw_init = DAC960_GEM_hw_init,
.irq_handler = DAC960_GEM_intr_handler,
.mmio_size = DAC960_GEM_mmio_size,
};
/*
* DAC960 BA Series Controllers.
*/
static inline void DAC960_BA_hw_mbox_new_cmd(void __iomem *base)
{
writeb(DAC960_BA_IDB_HWMBOX_NEW_CMD, base + DAC960_BA_IDB_OFFSET);
}
static inline void DAC960_BA_ack_hw_mbox_status(void __iomem *base)
{
writeb(DAC960_BA_IDB_HWMBOX_ACK_STS, base + DAC960_BA_IDB_OFFSET);
}
static inline void DAC960_BA_reset_ctrl(void __iomem *base)
{
writeb(DAC960_BA_IDB_CTRL_RESET, base + DAC960_BA_IDB_OFFSET);
}
static inline void DAC960_BA_mem_mbox_new_cmd(void __iomem *base)
{
writeb(DAC960_BA_IDB_MMBOX_NEW_CMD, base + DAC960_BA_IDB_OFFSET);
}
static inline bool DAC960_BA_hw_mbox_is_full(void __iomem *base)
{
u8 val;
val = readb(base + DAC960_BA_IDB_OFFSET);
return !(val & DAC960_BA_IDB_HWMBOX_EMPTY);
}
static inline bool DAC960_BA_init_in_progress(void __iomem *base)
{
u8 val;
val = readb(base + DAC960_BA_IDB_OFFSET);
return !(val & DAC960_BA_IDB_INIT_DONE);
}
static inline void DAC960_BA_ack_hw_mbox_intr(void __iomem *base)
{
writeb(DAC960_BA_ODB_HWMBOX_ACK_IRQ, base + DAC960_BA_ODB_OFFSET);
}
static inline void DAC960_BA_ack_intr(void __iomem *base)
{
writeb(DAC960_BA_ODB_HWMBOX_ACK_IRQ | DAC960_BA_ODB_MMBOX_ACK_IRQ,
base + DAC960_BA_ODB_OFFSET);
}
static inline bool DAC960_BA_hw_mbox_status_available(void __iomem *base)
{
u8 val;
val = readb(base + DAC960_BA_ODB_OFFSET);
return val & DAC960_BA_ODB_HWMBOX_STS_AVAIL;
}
static inline void DAC960_BA_enable_intr(void __iomem *base)
{
writeb(~DAC960_BA_IRQMASK_DISABLE_IRQ, base + DAC960_BA_IRQMASK_OFFSET);
}
static inline void DAC960_BA_disable_intr(void __iomem *base)
{
writeb(0xFF, base + DAC960_BA_IRQMASK_OFFSET);
}
static inline void DAC960_BA_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox,
union myrs_cmd_mbox *mbox)
{
memcpy(&mem_mbox->words[1], &mbox->words[1],
sizeof(union myrs_cmd_mbox) - sizeof(unsigned int));
/* Barrier to avoid reordering */
wmb();
mem_mbox->words[0] = mbox->words[0];
/* Barrier to force PCI access */
mb();
}
static inline void DAC960_BA_write_hw_mbox(void __iomem *base,
dma_addr_t cmd_mbox_addr)
{
dma_addr_writeql(cmd_mbox_addr, base + DAC960_BA_CMDMBX_OFFSET);
}
static inline unsigned char DAC960_BA_read_cmd_status(void __iomem *base)
{
return readw(base + DAC960_BA_CMDSTS_OFFSET + 2);
}
static inline bool
DAC960_BA_read_error_status(void __iomem *base, unsigned char *error,
unsigned char *param0, unsigned char *param1)
{
u8 val;
val = readb(base + DAC960_BA_ERRSTS_OFFSET);
if (!(val & DAC960_BA_ERRSTS_PENDING))
return false;
val &= ~DAC960_BA_ERRSTS_PENDING;
*error = val;
*param0 = readb(base + DAC960_BA_CMDMBX_OFFSET + 0);
*param1 = readb(base + DAC960_BA_CMDMBX_OFFSET + 1);
writeb(0xFF, base + DAC960_BA_ERRSTS_OFFSET);
return true;
}
static inline unsigned char
DAC960_BA_mbox_init(void __iomem *base, dma_addr_t mbox_addr)
{
unsigned char status;
while (DAC960_BA_hw_mbox_is_full(base))
udelay(1);
DAC960_BA_write_hw_mbox(base, mbox_addr);
DAC960_BA_hw_mbox_new_cmd(base);
while (!DAC960_BA_hw_mbox_status_available(base))
udelay(1);
status = DAC960_BA_read_cmd_status(base);
DAC960_BA_ack_hw_mbox_intr(base);
DAC960_BA_ack_hw_mbox_status(base);
return status;
}
static int DAC960_BA_hw_init(struct pci_dev *pdev,
struct myrs_hba *cs, void __iomem *base)
{
int timeout = 0;
unsigned char status, parm0, parm1;
DAC960_BA_disable_intr(base);
DAC960_BA_ack_hw_mbox_status(base);
udelay(1000);
while (DAC960_BA_init_in_progress(base) &&
timeout < MYRS_MAILBOX_TIMEOUT) {
if (DAC960_BA_read_error_status(base, &status,
&parm0, &parm1) &&
myrs_err_status(cs, status, parm0, parm1))
return -EIO;
udelay(10);
timeout++;
}
if (timeout == MYRS_MAILBOX_TIMEOUT) {
dev_err(&pdev->dev,
"Timeout waiting for Controller Initialisation\n");
return -ETIMEDOUT;
}
if (!myrs_enable_mmio_mbox(cs, DAC960_BA_mbox_init)) {
dev_err(&pdev->dev,
"Unable to Enable Memory Mailbox Interface\n");
DAC960_BA_reset_ctrl(base);
return -EAGAIN;
}
DAC960_BA_enable_intr(base);
cs->write_cmd_mbox = DAC960_BA_write_cmd_mbox;
cs->get_cmd_mbox = DAC960_BA_mem_mbox_new_cmd;
cs->disable_intr = DAC960_BA_disable_intr;
cs->reset = DAC960_BA_reset_ctrl;
return 0;
}
static irqreturn_t DAC960_BA_intr_handler(int irq, void *arg)
{
struct myrs_hba *cs = arg;
void __iomem *base = cs->io_base;
struct myrs_stat_mbox *next_stat_mbox;
unsigned long flags;
spin_lock_irqsave(&cs->queue_lock, flags);
DAC960_BA_ack_intr(base);
next_stat_mbox = cs->next_stat_mbox;
while (next_stat_mbox->id > 0) {
unsigned short id = next_stat_mbox->id;
struct scsi_cmnd *scmd = NULL;
struct myrs_cmdblk *cmd_blk = NULL;
if (id == MYRS_DCMD_TAG)
cmd_blk = &cs->dcmd_blk;
else if (id == MYRS_MCMD_TAG)
cmd_blk = &cs->mcmd_blk;
else {
scmd = scsi_host_find_tag(cs->host, id - 3);
if (scmd)
cmd_blk = scsi_cmd_priv(scmd);
}
if (cmd_blk) {
cmd_blk->status = next_stat_mbox->status;
cmd_blk->sense_len = next_stat_mbox->sense_len;
cmd_blk->residual = next_stat_mbox->residual;
} else
dev_err(&cs->pdev->dev,
"Unhandled command completion %d\n", id);
memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox));
if (++next_stat_mbox > cs->last_stat_mbox)
next_stat_mbox = cs->first_stat_mbox;
if (cmd_blk) {
if (id < 3)
myrs_handle_cmdblk(cs, cmd_blk);
else
myrs_handle_scsi(cs, cmd_blk, scmd);
}
}
cs->next_stat_mbox = next_stat_mbox;
spin_unlock_irqrestore(&cs->queue_lock, flags);
return IRQ_HANDLED;
}
static struct myrs_privdata DAC960_BA_privdata = {
.hw_init = DAC960_BA_hw_init,
.irq_handler = DAC960_BA_intr_handler,
.mmio_size = DAC960_BA_mmio_size,
};
/*
* DAC960 LP Series Controllers.
*/
static inline void DAC960_LP_hw_mbox_new_cmd(void __iomem *base)
{
writeb(DAC960_LP_IDB_HWMBOX_NEW_CMD, base + DAC960_LP_IDB_OFFSET);
}
static inline void DAC960_LP_ack_hw_mbox_status(void __iomem *base)
{
writeb(DAC960_LP_IDB_HWMBOX_ACK_STS, base + DAC960_LP_IDB_OFFSET);
}
static inline void DAC960_LP_reset_ctrl(void __iomem *base)
{
writeb(DAC960_LP_IDB_CTRL_RESET, base + DAC960_LP_IDB_OFFSET);
}
static inline void DAC960_LP_mem_mbox_new_cmd(void __iomem *base)
{
writeb(DAC960_LP_IDB_MMBOX_NEW_CMD, base + DAC960_LP_IDB_OFFSET);
}
static inline bool DAC960_LP_hw_mbox_is_full(void __iomem *base)
{
u8 val;
val = readb(base + DAC960_LP_IDB_OFFSET);
return val & DAC960_LP_IDB_HWMBOX_FULL;
}
static inline bool DAC960_LP_init_in_progress(void __iomem *base)
{
u8 val;
val = readb(base + DAC960_LP_IDB_OFFSET);
return val & DAC960_LP_IDB_INIT_IN_PROGRESS;
}
static inline void DAC960_LP_ack_hw_mbox_intr(void __iomem *base)
{
writeb(DAC960_LP_ODB_HWMBOX_ACK_IRQ, base + DAC960_LP_ODB_OFFSET);
}
static inline void DAC960_LP_ack_intr(void __iomem *base)
{
writeb(DAC960_LP_ODB_HWMBOX_ACK_IRQ | DAC960_LP_ODB_MMBOX_ACK_IRQ,
base + DAC960_LP_ODB_OFFSET);
}
static inline bool DAC960_LP_hw_mbox_status_available(void __iomem *base)
{
u8 val;
val = readb(base + DAC960_LP_ODB_OFFSET);
return val & DAC960_LP_ODB_HWMBOX_STS_AVAIL;
}
static inline void DAC960_LP_enable_intr(void __iomem *base)
{
writeb(~DAC960_LP_IRQMASK_DISABLE_IRQ, base + DAC960_LP_IRQMASK_OFFSET);
}
static inline void DAC960_LP_disable_intr(void __iomem *base)
{
writeb(0xFF, base + DAC960_LP_IRQMASK_OFFSET);
}
static inline void DAC960_LP_write_cmd_mbox(union myrs_cmd_mbox *mem_mbox,
union myrs_cmd_mbox *mbox)
{
memcpy(&mem_mbox->words[1], &mbox->words[1],
sizeof(union myrs_cmd_mbox) - sizeof(unsigned int));
/* Barrier to avoid reordering */
wmb();
mem_mbox->words[0] = mbox->words[0];
/* Barrier to force PCI access */
mb();
}
static inline void DAC960_LP_write_hw_mbox(void __iomem *base,
dma_addr_t cmd_mbox_addr)
{
dma_addr_writeql(cmd_mbox_addr, base + DAC960_LP_CMDMBX_OFFSET);
}
static inline unsigned char DAC960_LP_read_cmd_status(void __iomem *base)
{
return readw(base + DAC960_LP_CMDSTS_OFFSET + 2);
}
static inline bool
DAC960_LP_read_error_status(void __iomem *base, unsigned char *error,
unsigned char *param0, unsigned char *param1)
{
u8 val;
val = readb(base + DAC960_LP_ERRSTS_OFFSET);
if (!(val & DAC960_LP_ERRSTS_PENDING))
return false;
val &= ~DAC960_LP_ERRSTS_PENDING;
*error = val;
*param0 = readb(base + DAC960_LP_CMDMBX_OFFSET + 0);
*param1 = readb(base + DAC960_LP_CMDMBX_OFFSET + 1);
writeb(0xFF, base + DAC960_LP_ERRSTS_OFFSET);
return true;
}
static inline unsigned char
DAC960_LP_mbox_init(void __iomem *base, dma_addr_t mbox_addr)
{
unsigned char status;
while (DAC960_LP_hw_mbox_is_full(base))
udelay(1);
DAC960_LP_write_hw_mbox(base, mbox_addr);
DAC960_LP_hw_mbox_new_cmd(base);
while (!DAC960_LP_hw_mbox_status_available(base))
udelay(1);
status = DAC960_LP_read_cmd_status(base);
DAC960_LP_ack_hw_mbox_intr(base);
DAC960_LP_ack_hw_mbox_status(base);
return status;
}
static int DAC960_LP_hw_init(struct pci_dev *pdev,
struct myrs_hba *cs, void __iomem *base)
{
int timeout = 0;
unsigned char status, parm0, parm1;
DAC960_LP_disable_intr(base);
DAC960_LP_ack_hw_mbox_status(base);
udelay(1000);
while (DAC960_LP_init_in_progress(base) &&
timeout < MYRS_MAILBOX_TIMEOUT) {
if (DAC960_LP_read_error_status(base, &status,
&parm0, &parm1) &&
myrs_err_status(cs, status, parm0, parm1))
return -EIO;
udelay(10);
timeout++;
}
if (timeout == MYRS_MAILBOX_TIMEOUT) {
dev_err(&pdev->dev,
"Timeout waiting for Controller Initialisation\n");
return -ETIMEDOUT;
}
if (!myrs_enable_mmio_mbox(cs, DAC960_LP_mbox_init)) {
dev_err(&pdev->dev,
"Unable to Enable Memory Mailbox Interface\n");
DAC960_LP_reset_ctrl(base);
return -ENODEV;
}
DAC960_LP_enable_intr(base);
cs->write_cmd_mbox = DAC960_LP_write_cmd_mbox;
cs->get_cmd_mbox = DAC960_LP_mem_mbox_new_cmd;
cs->disable_intr = DAC960_LP_disable_intr;
cs->reset = DAC960_LP_reset_ctrl;
return 0;
}
static irqreturn_t DAC960_LP_intr_handler(int irq, void *arg)
{
struct myrs_hba *cs = arg;
void __iomem *base = cs->io_base;
struct myrs_stat_mbox *next_stat_mbox;
unsigned long flags;
spin_lock_irqsave(&cs->queue_lock, flags);
DAC960_LP_ack_intr(base);
next_stat_mbox = cs->next_stat_mbox;
while (next_stat_mbox->id > 0) {
unsigned short id = next_stat_mbox->id;
struct scsi_cmnd *scmd = NULL;
struct myrs_cmdblk *cmd_blk = NULL;
if (id == MYRS_DCMD_TAG)
cmd_blk = &cs->dcmd_blk;
else if (id == MYRS_MCMD_TAG)
cmd_blk = &cs->mcmd_blk;
else {
scmd = scsi_host_find_tag(cs->host, id - 3);
if (scmd)
cmd_blk = scsi_cmd_priv(scmd);
}
if (cmd_blk) {
cmd_blk->status = next_stat_mbox->status;
cmd_blk->sense_len = next_stat_mbox->sense_len;
cmd_blk->residual = next_stat_mbox->residual;
} else
dev_err(&cs->pdev->dev,
"Unhandled command completion %d\n", id);
memset(next_stat_mbox, 0, sizeof(struct myrs_stat_mbox));
if (++next_stat_mbox > cs->last_stat_mbox)
next_stat_mbox = cs->first_stat_mbox;
if (cmd_blk) {
if (id < 3)
myrs_handle_cmdblk(cs, cmd_blk);
else
myrs_handle_scsi(cs, cmd_blk, scmd);
}
}
cs->next_stat_mbox = next_stat_mbox;
spin_unlock_irqrestore(&cs->queue_lock, flags);
return IRQ_HANDLED;
}
static struct myrs_privdata DAC960_LP_privdata = {
.hw_init = DAC960_LP_hw_init,
.irq_handler = DAC960_LP_intr_handler,
.mmio_size = DAC960_LP_mmio_size,
};
/*
* Module functions
*/
static int
myrs_probe(struct pci_dev *dev, const struct pci_device_id *entry)
{
struct myrs_hba *cs;
int ret;
cs = myrs_detect(dev, entry);
if (!cs)
return -ENODEV;
ret = myrs_get_config(cs);
if (ret < 0) {
myrs_cleanup(cs);
return ret;
}
if (!myrs_create_mempools(dev, cs)) {
ret = -ENOMEM;
goto failed;
}
ret = scsi_add_host(cs->host, &dev->dev);
if (ret) {
dev_err(&dev->dev, "scsi_add_host failed with %d\n", ret);
myrs_destroy_mempools(cs);
goto failed;
}
scsi_scan_host(cs->host);
return 0;
failed:
myrs_cleanup(cs);
return ret;
}
static void myrs_remove(struct pci_dev *pdev)
{
struct myrs_hba *cs = pci_get_drvdata(pdev);
if (cs == NULL)
return;
shost_printk(KERN_NOTICE, cs->host, "Flushing Cache...");
myrs_flush_cache(cs);
myrs_destroy_mempools(cs);
myrs_cleanup(cs);
}
static const struct pci_device_id myrs_id_table[] = {
{
PCI_DEVICE_SUB(PCI_VENDOR_ID_MYLEX,
PCI_DEVICE_ID_MYLEX_DAC960_GEM,
PCI_VENDOR_ID_MYLEX, PCI_ANY_ID),
.driver_data = (unsigned long) &DAC960_GEM_privdata,
},
{
PCI_DEVICE_DATA(MYLEX, DAC960_BA, &DAC960_BA_privdata),
},
{
PCI_DEVICE_DATA(MYLEX, DAC960_LP, &DAC960_LP_privdata),
},
{0, },
};
MODULE_DEVICE_TABLE(pci, myrs_id_table);
static struct pci_driver myrs_pci_driver = {
.name = "myrs",
.id_table = myrs_id_table,
.probe = myrs_probe,
.remove = myrs_remove,
};
static int __init myrs_init_module(void)
{
int ret;
myrs_raid_template = raid_class_attach(&myrs_raid_functions);
if (!myrs_raid_template)
return -ENODEV;
ret = pci_register_driver(&myrs_pci_driver);
if (ret)
raid_class_release(myrs_raid_template);
return ret;
}
static void __exit myrs_cleanup_module(void)
{
pci_unregister_driver(&myrs_pci_driver);
raid_class_release(myrs_raid_template);
}
module_init(myrs_init_module);
module_exit(myrs_cleanup_module);
MODULE_DESCRIPTION("Mylex DAC960/AcceleRAID/eXtremeRAID driver (SCSI Interface)");
MODULE_AUTHOR("Hannes Reinecke <hare@suse.com>");
MODULE_LICENSE("GPL");
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