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Commit 253d2464 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by Martin K. Petersen
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scsi: cciss: Drop obsolete driver 

The hpsa driver now has support for all boards the cciss driver
used to support, so this patch removes the cciss driver and
make hpsa an alias to cciss.
Signed-off-by: default avatarHannes Reinecke <hare@suse.com>
Acked-by: default avatarDon Brace <don.brace@microsemi.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 45f769b2
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Documentation/blockdev/cciss.txt deleted 100644 → 0
View file @ 45f769b2
This driver is for Compaq's SMART Array Controllers.
Supported Cards:
----------------
This driver is known to work with the following cards:
* SA 5300
* SA 5i
* SA 532
* SA 5312
* SA 641
* SA 642
* SA 6400
* SA 6400 U320 Expansion Module
* SA 6i
* SA P600
* SA P800
* SA E400
* SA P400i
* SA E200
* SA E200i
* SA E500
* SA P700m
* SA P212
* SA P410
* SA P410i
* SA P411
* SA P812
* SA P712m
* SA P711m
Detecting drive failures:
-------------------------
To get the status of logical volumes and to detect physical drive
failures, you can use the cciss_vol_status program found here:
http://cciss.sourceforge.net/#cciss_utils
Device Naming:
--------------
If nodes are not already created in the /dev/cciss directory, run as root:
# cd /dev
# ./MAKEDEV cciss
You need some entries in /dev for the cciss device. The MAKEDEV script
can make device nodes for you automatically. Currently the device setup
is as follows:
Major numbers:
104 cciss0
105 cciss1
106 cciss2
105 cciss3
108 cciss4
109 cciss5
110 cciss6
111 cciss7
Minor numbers:
b7 b6 b5 b4 b3 b2 b1 b0
|----+----| |----+----|
| |
| +-------- Partition ID (0=wholedev, 1-15 partition)
|
+-------------------- Logical Volume number
The device naming scheme is:
/dev/cciss/c0d0 Controller 0, disk 0, whole device
/dev/cciss/c0d0p1 Controller 0, disk 0, partition 1
/dev/cciss/c0d0p2 Controller 0, disk 0, partition 2
/dev/cciss/c0d0p3 Controller 0, disk 0, partition 3
/dev/cciss/c1d1 Controller 1, disk 1, whole device
/dev/cciss/c1d1p1 Controller 1, disk 1, partition 1
/dev/cciss/c1d1p2 Controller 1, disk 1, partition 2
/dev/cciss/c1d1p3 Controller 1, disk 1, partition 3
CCISS simple mode support
-------------------------
The "cciss_simple_mode=1" boot parameter may be used to prevent the driver
from putting the controller into "performant" mode. The difference is that
with simple mode, each command completion requires an interrupt, while with
"performant mode" (the default, and ordinarily better performing) it is
possible to have multiple command completions indicated by a single
interrupt.
SCSI tape drive and medium changer support
------------------------------------------
SCSI sequential access devices and medium changer devices are supported and
appropriate device nodes are automatically created. (e.g.
/dev/st0, /dev/st1, etc. See the "st" man page for more details.)
You must enable "SCSI tape drive support for Smart Array 5xxx" and
"SCSI support" in your kernel configuration to be able to use SCSI
tape drives with your Smart Array 5xxx controller.
Additionally, note that the driver will engage the SCSI core at init
time if any tape drives or medium changers are detected. The driver may
also be directed to dynamically engage the SCSI core via the /proc filesystem
entry which the "block" side of the driver creates as
/proc/driver/cciss/cciss* at runtime. This is best done via a script.
For example:
for x in /proc/driver/cciss/cciss[0-9]*
do
echo "engage scsi" > $x
done
Once the SCSI core is engaged by the driver, it cannot be disengaged
(except by unloading the driver, if it happens to be linked as a module.)
Note also that if no sequential access devices or medium changers are
detected, the SCSI core will not be engaged by the action of the above
script.
Hot plug support for SCSI tape drives
-------------------------------------
Hot plugging of SCSI tape drives is supported, with some caveats.
The cciss driver must be informed that changes to the SCSI bus
have been made. This may be done via the /proc filesystem.
For example:
echo "rescan" > /proc/scsi/cciss0/1
This causes the driver to query the adapter about changes to the
physical SCSI buses and/or fibre channel arbitrated loop and the
driver to make note of any new or removed sequential access devices
or medium changers. The driver will output messages indicating what
devices have been added or removed and the controller, bus, target and
lun used to address the device. It then notifies the SCSI mid layer
of these changes.
Note that the naming convention of the /proc filesystem entries
contains a number in addition to the driver name. (E.g. "cciss0"
instead of just "cciss" which you might expect.)
Note: ONLY sequential access devices and medium changers are presented
as SCSI devices to the SCSI mid layer by the cciss driver. Specifically,
physical SCSI disk drives are NOT presented to the SCSI mid layer. The
physical SCSI disk drives are controlled directly by the array controller
hardware and it is important to prevent the kernel from attempting to directly
access these devices too, as if the array controller were merely a SCSI
controller in the same way that we are allowing it to access SCSI tape drives.
SCSI error handling for tape drives and medium changers
-------------------------------------------------------
The linux SCSI mid layer provides an error handling protocol which
kicks into gear whenever a SCSI command fails to complete within a
certain amount of time (which can vary depending on the command).
The cciss driver participates in this protocol to some extent. The
normal protocol is a four step process. First the device is told
to abort the command. If that doesn't work, the device is reset.
If that doesn't work, the SCSI bus is reset. If that doesn't work
the host bus adapter is reset. Because the cciss driver is a block
driver as well as a SCSI driver and only the tape drives and medium
changers are presented to the SCSI mid layer, and unlike more
straightforward SCSI drivers, disk i/o continues through the block
side during the SCSI error recovery process, the cciss driver only
implements the first two of these actions, aborting the command, and
resetting the device. Additionally, most tape drives will not oblige
in aborting commands, and sometimes it appears they will not even
obey a reset command, though in most circumstances they will. In
the case that the command cannot be aborted and the device cannot be
reset, the device will be set offline.
In the event the error handling code is triggered and a tape drive is
successfully reset or the tardy command is successfully aborted, the
tape drive may still not allow i/o to continue until some command
is issued which positions the tape to a known position. Typically you
must rewind the tape (by issuing "mt -f /dev/st0 rewind" for example)
before i/o can proceed again to a tape drive which was reset.
There is a cciss_tape_cmds module parameter which can be used to make cciss
allocate more commands for use by tape drives. Ordinarily only a few commands
(6) are allocated for tape drives because tape drives are slow and
infrequently used and the primary purpose of Smart Array controllers is to
act as a RAID controller for disk drives, so the vast majority of commands
are allocated for disk devices. However, if you have more than a few tape
drives attached to a smart array, the default number of commands may not be
enough (for example, if you have 8 tape drives, you could only rewind 6
at one time with the default number of commands.) The cciss_tape_cmds module
parameter allows more commands (up to 16 more) to be allocated for use by
tape drives. For example:
insmod cciss.ko cciss_tape_cmds=16
Or, as a kernel boot parameter passed in via grub: cciss.cciss_tape_cmds=8
MAINTAINERS
View file @ 253d2464
......@@ -6032,16 +6032,6 @@ F: drivers/scsi/hpsa*.[ch]
F: include/linux/cciss*.h
F: include/uapi/linux/cciss*.h
HEWLETT-PACKARD SMART CISS RAID DRIVER (cciss)
M: Don Brace <don.brace@microsemi.com>
L: esc.storagedev@microsemi.com
L: linux-scsi@vger.kernel.org
S: Supported
F: Documentation/blockdev/cciss.txt
F: drivers/block/cciss*
F: include/linux/cciss_ioctl.h
F: include/uapi/linux/cciss_ioctl.h
HFI1 DRIVER
M: Mike Marciniszyn <mike.marciniszyn@intel.com>
M: Dennis Dalessandro <dennis.dalessandro@intel.com>
......
drivers/block/Kconfig
View file @ 253d2464
......@@ -111,33 +111,6 @@ source "drivers/block/mtip32xx/Kconfig"
source "drivers/block/zram/Kconfig"
config BLK_CPQ_CISS_DA
tristate "Compaq Smart Array 5xxx support"
depends on PCI
select CHECK_SIGNATURE
select BLK_SCSI_REQUEST
help
This is the driver for Compaq Smart Array 5xxx controllers.
Everyone using these boards should say Y here.
See <file:Documentation/blockdev/cciss.txt> for the current list of
boards supported by this driver, and for further information
on the use of this driver.
config CISS_SCSI_TAPE
bool "SCSI tape drive support for Smart Array 5xxx"
depends on BLK_CPQ_CISS_DA && PROC_FS
depends on SCSI=y || SCSI=BLK_CPQ_CISS_DA
help
When enabled (Y), this option allows SCSI tape drives and SCSI medium
changers (tape robots) to be accessed via a Compaq 5xxx array
controller. (See <file:Documentation/blockdev/cciss.txt> for more details.)
"SCSI support" and "SCSI tape support" must also be enabled for this
option to work.
When this option is disabled (N), the SCSI portion of the driver
is not compiled.
config BLK_DEV_DAC960
tristate "Mylex DAC960/DAC1100 PCI RAID Controller support"
depends on PCI
......
drivers/block/Makefile
View file @ 253d2464
......@@ -15,7 +15,6 @@ obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o
obj-$(CONFIG_AMIGA_Z2RAM) += z2ram.o
obj-$(CONFIG_BLK_DEV_RAM) += brd.o
obj-$(CONFIG_BLK_DEV_LOOP) += loop.o
obj-$(CONFIG_BLK_CPQ_CISS_DA) += cciss.o
obj-$(CONFIG_BLK_DEV_DAC960) += DAC960.o
obj-$(CONFIG_XILINX_SYSACE) += xsysace.o
obj-$(CONFIG_CDROM_PKTCDVD) += pktcdvd.o
......
drivers/block/cciss.c deleted 100644 → 0
View file @ 45f769b2
This source diff could not be displayed because it is too large. You can view the blob instead.
drivers/block/cciss.h deleted 100644 → 0
View file @ 45f769b2
#ifndef CCISS_H
#define CCISS_H
#include <linux/genhd.h>
#include <linux/mutex.h>
#include "cciss_cmd.h"
#define NWD_SHIFT 4
#define MAX_PART (1 << NWD_SHIFT)
#define IO_OK 0
#define IO_ERROR 1
#define IO_NEEDS_RETRY 3
#define VENDOR_LEN 8
#define MODEL_LEN 16
#define REV_LEN 4
struct ctlr_info;
typedef struct ctlr_info ctlr_info_t;
struct access_method {
void (*submit_command)(ctlr_info_t *h, CommandList_struct *c);
void (*set_intr_mask)(ctlr_info_t *h, unsigned long val);
unsigned long (*fifo_full)(ctlr_info_t *h);
bool (*intr_pending)(ctlr_info_t *h);
unsigned long (*command_completed)(ctlr_info_t *h);
};
typedef struct _drive_info_struct
{
unsigned char LunID[8];
int usage_count;
struct request_queue *queue;
sector_t nr_blocks;
int block_size;
int heads;
int sectors;
int cylinders;
int raid_level; /* set to -1 to indicate that
* the drive is not in use/configured
*/
int busy_configuring; /* This is set when a drive is being removed
* to prevent it from being opened or it's
* queue from being started.
*/
struct device dev;
__u8 serial_no[16]; /* from inquiry page 0x83,
* not necc. null terminated.
*/
char vendor[VENDOR_LEN + 1]; /* SCSI vendor string */
char model[MODEL_LEN + 1]; /* SCSI model string */
char rev[REV_LEN + 1]; /* SCSI revision string */
char device_initialized; /* indicates whether dev is initialized */
} drive_info_struct;
struct ctlr_info
{
int ctlr;
char devname[8];
char *product_name;
char firm_ver[4]; /* Firmware version */
struct pci_dev *pdev;
__u32 board_id;
void __iomem *vaddr;
unsigned long paddr;
int nr_cmds; /* Number of commands allowed on this controller */
CfgTable_struct __iomem *cfgtable;
int interrupts_enabled;
int major;
int max_commands;
int commands_outstanding;
int max_outstanding; /* Debug */
int num_luns;
int highest_lun;
int usage_count; /* number of opens all all minor devices */
/* Need space for temp sg list
* number of scatter/gathers supported
* number of scatter/gathers in chained block
*/
struct scatterlist **scatter_list;
int maxsgentries;
int chainsize;
int max_cmd_sgentries;
SGDescriptor_struct **cmd_sg_list;
# define PERF_MODE_INT 0
# define DOORBELL_INT 1
# define SIMPLE_MODE_INT 2
# define MEMQ_MODE_INT 3
unsigned int intr[4];
int intr_mode;
int cciss_max_sectors;
BYTE cciss_read;
BYTE cciss_write;
BYTE cciss_read_capacity;
/* information about each logical volume */
drive_info_struct *drv[CISS_MAX_LUN];
struct access_method access;
/* queue and queue Info */
struct list_head reqQ;
struct list_head cmpQ;
unsigned int Qdepth;
unsigned int maxQsinceinit;
unsigned int maxSG;
spinlock_t lock;
/* pointers to command and error info pool */
CommandList_struct *cmd_pool;
dma_addr_t cmd_pool_dhandle;
ErrorInfo_struct *errinfo_pool;
dma_addr_t errinfo_pool_dhandle;
unsigned long *cmd_pool_bits;
int nr_allocs;
int nr_frees;
int busy_configuring;
int busy_initializing;
int busy_scanning;
struct mutex busy_shutting_down;
/* This element holds the zero based queue number of the last
* queue to be started. It is used for fairness.
*/
int next_to_run;
/* Disk structures we need to pass back */
struct gendisk *gendisk[CISS_MAX_LUN];
#ifdef CONFIG_CISS_SCSI_TAPE
struct cciss_scsi_adapter_data_t *scsi_ctlr;
#endif
unsigned char alive;
struct list_head scan_list;
struct completion scan_wait;
struct device dev;
/*
* Performant mode tables.
*/
u32 trans_support;
u32 trans_offset;
struct TransTable_struct *transtable;
unsigned long transMethod;
/*
* Performant mode completion buffer
*/
u64 *reply_pool;
dma_addr_t reply_pool_dhandle;
u64 *reply_pool_head;
size_t reply_pool_size;
unsigned char reply_pool_wraparound;
u32 *blockFetchTable;
};
/* Defining the diffent access_methods
*
* Memory mapped FIFO interface (SMART 53xx cards)
*/
#define SA5_DOORBELL 0x20
#define SA5_REQUEST_PORT_OFFSET 0x40
#define SA5_REPLY_INTR_MASK_OFFSET 0x34
#define SA5_REPLY_PORT_OFFSET 0x44
#define SA5_INTR_STATUS 0x30
#define SA5_SCRATCHPAD_OFFSET 0xB0
#define SA5_CTCFG_OFFSET 0xB4
#define SA5_CTMEM_OFFSET 0xB8
#define SA5_INTR_OFF 0x08
#define SA5B_INTR_OFF 0x04
#define SA5_INTR_PENDING 0x08
#define SA5B_INTR_PENDING 0x04
#define FIFO_EMPTY 0xffffffff
#define CCISS_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */
/* Perf. mode flags */
#define SA5_PERF_INTR_PENDING 0x04
#define SA5_PERF_INTR_OFF 0x05
#define SA5_OUTDB_STATUS_PERF_BIT 0x01
#define SA5_OUTDB_CLEAR_PERF_BIT 0x01
#define SA5_OUTDB_CLEAR 0xA0
#define SA5_OUTDB_CLEAR_PERF_BIT 0x01
#define SA5_OUTDB_STATUS 0x9C
#define CISS_ERROR_BIT 0x02
#define CCISS_INTR_ON 1
#define CCISS_INTR_OFF 0
/* CCISS_BOARD_READY_WAIT_SECS is how long to wait for a board
* to become ready, in seconds, before giving up on it.
* CCISS_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait
* between polling the board to see if it is ready, in
* milliseconds. CCISS_BOARD_READY_ITERATIONS is derived
* the above.
*/
#define CCISS_BOARD_READY_WAIT_SECS (120)
#define CCISS_BOARD_NOT_READY_WAIT_SECS (100)
#define CCISS_BOARD_READY_POLL_INTERVAL_MSECS (100)
#define CCISS_BOARD_READY_ITERATIONS \
((CCISS_BOARD_READY_WAIT_SECS * 1000) / \
CCISS_BOARD_READY_POLL_INTERVAL_MSECS)
#define CCISS_BOARD_NOT_READY_ITERATIONS \
((CCISS_BOARD_NOT_READY_WAIT_SECS * 1000) / \
CCISS_BOARD_READY_POLL_INTERVAL_MSECS)
#define CCISS_POST_RESET_PAUSE_MSECS (3000)
#define CCISS_POST_RESET_NOOP_INTERVAL_MSECS (4000)
#define CCISS_POST_RESET_NOOP_RETRIES (12)
#define CCISS_POST_RESET_NOOP_TIMEOUT_MSECS (10000)
/*
Send the command to the hardware
*/
static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c)
{
#ifdef CCISS_DEBUG
printk(KERN_WARNING "cciss%d: Sending %08x - down to controller\n",
h->ctlr, c->busaddr);
#endif /* CCISS_DEBUG */
writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
h->commands_outstanding++;
if ( h->commands_outstanding > h->max_outstanding)
h->max_outstanding = h->commands_outstanding;
}
/*
* This card is the opposite of the other cards.
* 0 turns interrupts on...
* 0x08 turns them off...
*/
static void SA5_intr_mask(ctlr_info_t *h, unsigned long val)
{
if (val)
{ /* Turn interrupts on */
h->interrupts_enabled = 1;
writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
} else /* Turn them off */
{
h->interrupts_enabled = 0;
writel( SA5_INTR_OFF,
h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
}
}
/*
* This card is the opposite of the other cards.
* 0 turns interrupts on...
* 0x04 turns them off...
*/
static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val)
{
if (val)
{ /* Turn interrupts on */
h->interrupts_enabled = 1;
writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
} else /* Turn them off */
{
h->interrupts_enabled = 0;
writel( SA5B_INTR_OFF,
h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
}
}
/* Performant mode intr_mask */
static void SA5_performant_intr_mask(ctlr_info_t *h, unsigned long val)
{
if (val) { /* turn on interrupts */
h->interrupts_enabled = 1;
writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
} else {
h->interrupts_enabled = 0;
writel(SA5_PERF_INTR_OFF,
h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
}
}
/*
* Returns true if fifo is full.
*
*/
static unsigned long SA5_fifo_full(ctlr_info_t *h)
{
if( h->commands_outstanding >= h->max_commands)
return(1);
else
return(0);
}
/*
* returns value read from hardware.
* returns FIFO_EMPTY if there is nothing to read
*/
static unsigned long SA5_completed(ctlr_info_t *h)
{
unsigned long register_value
= readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
if(register_value != FIFO_EMPTY)
{
h->commands_outstanding--;
#ifdef CCISS_DEBUG
printk("cciss: Read %lx back from board\n", register_value);
#endif /* CCISS_DEBUG */
}
#ifdef CCISS_DEBUG
else
{
printk("cciss: FIFO Empty read\n");
}
#endif
return ( register_value);
}
/* Performant mode command completed */
static unsigned long SA5_performant_completed(ctlr_info_t *h)
{
unsigned long register_value = FIFO_EMPTY;
/* flush the controller write of the reply queue by reading
* outbound doorbell status register.
*/
register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
/* msi auto clears the interrupt pending bit. */
if (!(h->pdev->msi_enabled || h->pdev->msix_enabled)) {
writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR);
/* Do a read in order to flush the write to the controller
* (as per spec.)
*/
register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
}
if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
register_value = *(h->reply_pool_head);
(h->reply_pool_head)++;
h->commands_outstanding--;
} else {
register_value = FIFO_EMPTY;
}
/* Check for wraparound */
if (h->reply_pool_head == (h->reply_pool + h->max_commands)) {
h->reply_pool_head = h->reply_pool;
h->reply_pool_wraparound ^= 1;
}
return register_value;
}
/*
* Returns true if an interrupt is pending..
*/
static bool SA5_intr_pending(ctlr_info_t *h)
{
unsigned long register_value =
readl(h->vaddr + SA5_INTR_STATUS);
#ifdef CCISS_DEBUG
printk("cciss: intr_pending %lx\n", register_value);
#endif /* CCISS_DEBUG */
if( register_value & SA5_INTR_PENDING)
return 1;
return 0 ;
}
/*
* Returns true if an interrupt is pending..
*/
static bool SA5B_intr_pending(ctlr_info_t *h)
{
unsigned long register_value =
readl(h->vaddr + SA5_INTR_STATUS);
#ifdef CCISS_DEBUG
printk("cciss: intr_pending %lx\n", register_value);
#endif /* CCISS_DEBUG */
if( register_value & SA5B_INTR_PENDING)
return 1;
return 0 ;
}
static bool SA5_performant_intr_pending(ctlr_info_t *h)
{
unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS);
if (!register_value)
return false;
if (h->pdev->msi_enabled || h->pdev->msix_enabled)
return true;
/* Read outbound doorbell to flush */
register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
return register_value & SA5_OUTDB_STATUS_PERF_BIT;
}
static struct access_method SA5_access = {
.submit_command = SA5_submit_command,
.set_intr_mask = SA5_intr_mask,
.fifo_full = SA5_fifo_full,
.intr_pending = SA5_intr_pending,
.command_completed = SA5_completed,
};
static struct access_method SA5B_access = {
.submit_command = SA5_submit_command,
.set_intr_mask = SA5B_intr_mask,
.fifo_full = SA5_fifo_full,
.intr_pending = SA5B_intr_pending,
.command_completed = SA5_completed,
};
static struct access_method SA5_performant_access = {
.submit_command = SA5_submit_command,
.set_intr_mask = SA5_performant_intr_mask,
.fifo_full = SA5_fifo_full,
.intr_pending = SA5_performant_intr_pending,
.command_completed = SA5_performant_completed,
};
struct board_type {
__u32 board_id;
char *product_name;
struct access_method *access;
int nr_cmds; /* Max cmds this kind of ctlr can handle. */
};
#endif /* CCISS_H */
drivers/block/cciss_cmd.h deleted 100644 → 0
View file @ 45f769b2
#ifndef CCISS_CMD_H
#define CCISS_CMD_H
#include <linux/cciss_defs.h>
/* DEFINES */
#define CISS_VERSION "1.00"
/* general boundary definitions */
#define MAXSGENTRIES 32
#define CCISS_SG_CHAIN 0x80000000
#define MAXREPLYQS 256
/* Unit Attentions ASC's as defined for the MSA2012sa */
#define POWER_OR_RESET 0x29
#define STATE_CHANGED 0x2a
#define UNIT_ATTENTION_CLEARED 0x2f
#define LUN_FAILED 0x3e
#define REPORT_LUNS_CHANGED 0x3f
/* Unit Attentions ASCQ's as defined for the MSA2012sa */
/* These ASCQ's defined for ASC = POWER_OR_RESET */
#define POWER_ON_RESET 0x00
#define POWER_ON_REBOOT 0x01
#define SCSI_BUS_RESET 0x02
#define MSA_TARGET_RESET 0x03
#define CONTROLLER_FAILOVER 0x04
#define TRANSCEIVER_SE 0x05
#define TRANSCEIVER_LVD 0x06
/* These ASCQ's defined for ASC = STATE_CHANGED */
#define RESERVATION_PREEMPTED 0x03
#define ASYM_ACCESS_CHANGED 0x06
#define LUN_CAPACITY_CHANGED 0x09
/* config space register offsets */
#define CFG_VENDORID 0x00
#define CFG_DEVICEID 0x02
#define CFG_I2OBAR 0x10
#define CFG_MEM1BAR 0x14
/* i2o space register offsets */
#define I2O_IBDB_SET 0x20
#define I2O_IBDB_CLEAR 0x70
#define I2O_INT_STATUS 0x30
#define I2O_INT_MASK 0x34
#define I2O_IBPOST_Q 0x40
#define I2O_OBPOST_Q 0x44
#define I2O_DMA1_CFG 0x214
/* Configuration Table */
#define CFGTBL_ChangeReq 0x00000001l
#define CFGTBL_AccCmds 0x00000001l
#define DOORBELL_CTLR_RESET 0x00000004l
#define DOORBELL_CTLR_RESET2 0x00000020l
#define CFGTBL_Trans_Simple 0x00000002l
#define CFGTBL_Trans_Performant 0x00000004l
#define CFGTBL_Trans_use_short_tags 0x20000000l
#define CFGTBL_BusType_Ultra2 0x00000001l
#define CFGTBL_BusType_Ultra3 0x00000002l
#define CFGTBL_BusType_Fibre1G 0x00000100l
#define CFGTBL_BusType_Fibre2G 0x00000200l
typedef struct _vals32
{
__u32 lower;
__u32 upper;
} vals32;
typedef union _u64bit
{
vals32 val32;
__u64 val;
} u64bit;
/* Type defs used in the following structs */
#define QWORD vals32
/* STRUCTURES */
#define CISS_MAX_PHYS_LUN 1024
/* SCSI-3 Cmmands */
#pragma pack(1)
#define CISS_INQUIRY 0x12
/* Date returned */
typedef struct _InquiryData_struct
{
BYTE data_byte[36];
} InquiryData_struct;
#define CISS_REPORT_LOG 0xc2 /* Report Logical LUNs */
#define CISS_REPORT_PHYS 0xc3 /* Report Physical LUNs */
/* Data returned */
typedef struct _ReportLUNdata_struct
{
BYTE LUNListLength[4];
DWORD reserved;
BYTE LUN[CISS_MAX_LUN][8];
} ReportLunData_struct;
#define CCISS_READ_CAPACITY 0x25 /* Read Capacity */
typedef struct _ReadCapdata_struct
{
BYTE total_size[4]; /* Total size in blocks */
BYTE block_size[4]; /* Size of blocks in bytes */
} ReadCapdata_struct;
#define CCISS_READ_CAPACITY_16 0x9e /* Read Capacity 16 */
/* service action to differentiate a 16 byte read capacity from
other commands that use the 0x9e SCSI op code */
#define CCISS_READ_CAPACITY_16_SERVICE_ACT 0x10
typedef struct _ReadCapdata_struct_16
{
BYTE total_size[8]; /* Total size in blocks */
BYTE block_size[4]; /* Size of blocks in bytes */
BYTE prot_en:1; /* protection enable bit */
BYTE rto_en:1; /* reference tag own enable bit */
BYTE reserved:6; /* reserved bits */
BYTE reserved2[18]; /* reserved bytes per spec */
} ReadCapdata_struct_16;
/* Define the supported read/write commands for cciss based controllers */
#define CCISS_READ_10 0x28 /* Read(10) */
#define CCISS_WRITE_10 0x2a /* Write(10) */
#define CCISS_READ_16 0x88 /* Read(16) */
#define CCISS_WRITE_16 0x8a /* Write(16) */
/* Define the CDB lengths supported by cciss based controllers */
#define CDB_LEN10 10
#define CDB_LEN16 16
/* BMIC commands */
#define BMIC_READ 0x26
#define BMIC_WRITE 0x27
#define BMIC_CACHE_FLUSH 0xc2
#define CCISS_CACHE_FLUSH 0x01 /* C2 was already being used by CCISS */
#define CCISS_ABORT_MSG 0x00
#define CCISS_RESET_MSG 0x01
#define CCISS_RESET_TYPE_CONTROLLER 0x00
#define CCISS_RESET_TYPE_BUS 0x01
#define CCISS_RESET_TYPE_TARGET 0x03
#define CCISS_RESET_TYPE_LUN 0x04
#define CCISS_NOOP_MSG 0x03
/* Command List Structure */
#define CTLR_LUNID "\0\0\0\0\0\0\0\0"
typedef struct _CommandListHeader_struct {
BYTE ReplyQueue;
BYTE SGList;
HWORD SGTotal;
QWORD Tag;
LUNAddr_struct LUN;
} CommandListHeader_struct;
typedef struct _ErrDescriptor_struct {
QWORD Addr;
DWORD Len;
} ErrDescriptor_struct;
typedef struct _SGDescriptor_struct {
QWORD Addr;
DWORD Len;
DWORD Ext;
} SGDescriptor_struct;
/* Command types */
#define CMD_RWREQ 0x00
#define CMD_IOCTL_PEND 0x01
#define CMD_SCSI 0x03
#define CMD_MSG_DONE 0x04
#define CMD_MSG_TIMEOUT 0x05
#define CMD_MSG_STALE 0xff
/* This structure needs to be divisible by COMMANDLIST_ALIGNMENT
* because low bits of the address are used to to indicate that
* whether the tag contains an index or an address. PAD_32 and
* PAD_64 can be adjusted independently as needed for 32-bit
* and 64-bits systems.
*/
#define COMMANDLIST_ALIGNMENT (32)
#define IS_64_BIT ((sizeof(long) - 4)/4)
#define IS_32_BIT (!IS_64_BIT)
#define PAD_32 (0)
#define PAD_64 (4)
#define PADSIZE (IS_32_BIT * PAD_32 + IS_64_BIT * PAD_64)
#define DIRECT_LOOKUP_BIT 0x10
#define DIRECT_LOOKUP_SHIFT 5
typedef struct _CommandList_struct {
CommandListHeader_struct Header;
RequestBlock_struct Request;
ErrDescriptor_struct ErrDesc;
SGDescriptor_struct SG[MAXSGENTRIES];
/* information associated with the command */
__u32 busaddr; /* physical address of this record */
ErrorInfo_struct * err_info; /* pointer to the allocated mem */
int ctlr;
int cmd_type;
long cmdindex;
struct list_head list;
struct request * rq;
struct completion *waiting;
int retry_count;
void * scsi_cmd;
char pad[PADSIZE];
} CommandList_struct;
/* Configuration Table Structure */
typedef struct _HostWrite_struct {
DWORD TransportRequest;
DWORD Reserved;
DWORD CoalIntDelay;
DWORD CoalIntCount;
} HostWrite_struct;
typedef struct _CfgTable_struct {
BYTE Signature[4];
DWORD SpecValence;
#define SIMPLE_MODE 0x02
#define PERFORMANT_MODE 0x04
#define MEMQ_MODE 0x08
DWORD TransportSupport;
DWORD TransportActive;
HostWrite_struct HostWrite;
DWORD CmdsOutMax;
DWORD BusTypes;
DWORD TransMethodOffset;
BYTE ServerName[16];
DWORD HeartBeat;
DWORD SCSI_Prefetch;
DWORD MaxSGElements;
DWORD MaxLogicalUnits;
DWORD MaxPhysicalDrives;
DWORD MaxPhysicalDrivesPerLogicalUnit;
DWORD MaxPerformantModeCommands;
u8 reserved[0x78 - 0x58];
u32 misc_fw_support; /* offset 0x78 */
#define MISC_FW_DOORBELL_RESET (0x02)
#define MISC_FW_DOORBELL_RESET2 (0x10)
u8 driver_version[32];
} CfgTable_struct;
struct TransTable_struct {
u32 BlockFetch0;
u32 BlockFetch1;
u32 BlockFetch2;
u32 BlockFetch3;
u32 BlockFetch4;
u32 BlockFetch5;
u32 BlockFetch6;
u32 BlockFetch7;
u32 RepQSize;
u32 RepQCount;
u32 RepQCtrAddrLow32;
u32 RepQCtrAddrHigh32;
u32 RepQAddr0Low32;
u32 RepQAddr0High32;
};
#pragma pack()
#endif /* CCISS_CMD_H */
drivers/block/cciss_scsi.c deleted 100644 → 0
View file @ 45f769b2
/*
* Disk Array driver for HP Smart Array controllers, SCSI Tape module.
* (C) Copyright 2001, 2007 Hewlett-Packard Development Company, L.P.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 300, Boston, MA
* 02111-1307, USA.
*
* Questions/Comments/Bugfixes to iss_storagedev@hp.com
*
* Author: Stephen M. Cameron
*/
#ifdef CONFIG_CISS_SCSI_TAPE
/* Here we have code to present the driver as a scsi driver
as it is simultaneously presented as a block driver. The
reason for doing this is to allow access to SCSI tape drives
through the array controller. Note in particular, neither
physical nor logical disks are presented through the scsi layer. */
#include <linux/timer.h>
#include <linux/completion.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/atomic.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include "cciss_scsi.h"
#define CCISS_ABORT_MSG 0x00
#define CCISS_RESET_MSG 0x01
static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff,
size_t size,
__u8 page_code, unsigned char *scsi3addr,
int cmd_type);
static CommandList_struct *cmd_alloc(ctlr_info_t *h);
static CommandList_struct *cmd_special_alloc(ctlr_info_t *h);
static void cmd_free(ctlr_info_t *h, CommandList_struct *c);
static void cmd_special_free(ctlr_info_t *h, CommandList_struct *c);
static int cciss_scsi_write_info(struct Scsi_Host *sh,
char *buffer, /* data buffer */
int length); /* length of data in buffer */
static int cciss_scsi_show_info(struct seq_file *m,
struct Scsi_Host *sh);
static int cciss_scsi_queue_command (struct Scsi_Host *h,
struct scsi_cmnd *cmd);
static int cciss_eh_device_reset_handler(struct scsi_cmnd *);
static int cciss_eh_abort_handler(struct scsi_cmnd *);
static struct cciss_scsi_hba_t ccissscsi[MAX_CTLR] = {
{ .name = "cciss0", .ndevices = 0 },
{ .name = "cciss1", .ndevices = 0 },
{ .name = "cciss2", .ndevices = 0 },
{ .name = "cciss3", .ndevices = 0 },
{ .name = "cciss4", .ndevices = 0 },
{ .name = "cciss5", .ndevices = 0 },
{ .name = "cciss6", .ndevices = 0 },
{ .name = "cciss7", .ndevices = 0 },
};
static struct scsi_host_template cciss_driver_template = {
.module = THIS_MODULE,
.name = "cciss",
.proc_name = "cciss",
.write_info = cciss_scsi_write_info,
.show_info = cciss_scsi_show_info,
.queuecommand = cciss_scsi_queue_command,
.this_id = 7,
.use_clustering = DISABLE_CLUSTERING,
/* Can't have eh_bus_reset_handler or eh_host_reset_handler for cciss */
.eh_device_reset_handler= cciss_eh_device_reset_handler,
.eh_abort_handler = cciss_eh_abort_handler,
};
#pragma pack(1)
#define SCSI_PAD_32 8
#define SCSI_PAD_64 8
struct cciss_scsi_cmd_stack_elem_t {
CommandList_struct cmd;
ErrorInfo_struct Err;
__u32 busaddr;
int cmdindex;
u8 pad[IS_32_BIT * SCSI_PAD_32 + IS_64_BIT * SCSI_PAD_64];
};
#pragma pack()
#pragma pack(1)
struct cciss_scsi_cmd_stack_t {
struct cciss_scsi_cmd_stack_elem_t *pool;
struct cciss_scsi_cmd_stack_elem_t **elem;
dma_addr_t cmd_pool_handle;
int top;
int nelems;
};
#pragma pack()
struct cciss_scsi_adapter_data_t {
struct Scsi_Host *scsi_host;
struct cciss_scsi_cmd_stack_t cmd_stack;
SGDescriptor_struct **cmd_sg_list;
int registered;
spinlock_t lock; // to protect ccissscsi[ctlr];
};
#define CPQ_TAPE_LOCK(h, flags) spin_lock_irqsave( \
&h->scsi_ctlr->lock, flags);
#define CPQ_TAPE_UNLOCK(h, flags) spin_unlock_irqrestore( \
&h->scsi_ctlr->lock, flags);
static CommandList_struct *
scsi_cmd_alloc(ctlr_info_t *h)
{
/* assume only one process in here at a time, locking done by caller. */
/* use h->lock */
/* might be better to rewrite how we allocate scsi commands in a way that */
/* needs no locking at all. */
/* take the top memory chunk off the stack and return it, if any. */
struct cciss_scsi_cmd_stack_elem_t *c;
struct cciss_scsi_adapter_data_t *sa;
struct cciss_scsi_cmd_stack_t *stk;
u64bit temp64;
sa = h->scsi_ctlr;
stk = &sa->cmd_stack;
if (stk->top < 0)
return NULL;
c = stk->elem[stk->top];
/* memset(c, 0, sizeof(*c)); */
memset(&c->cmd, 0, sizeof(c->cmd));
memset(&c->Err, 0, sizeof(c->Err));
/* set physical addr of cmd and addr of scsi parameters */
c->cmd.busaddr = c->busaddr;
c->cmd.cmdindex = c->cmdindex;
/* (__u32) (stk->cmd_pool_handle +
(sizeof(struct cciss_scsi_cmd_stack_elem_t)*stk->top)); */
temp64.val = (__u64) (c->busaddr + sizeof(CommandList_struct));
/* (__u64) (stk->cmd_pool_handle +
(sizeof(struct cciss_scsi_cmd_stack_elem_t)*stk->top) +
sizeof(CommandList_struct)); */
stk->top--;
c->cmd.ErrDesc.Addr.lower = temp64.val32.lower;
c->cmd.ErrDesc.Addr.upper = temp64.val32.upper;
c->cmd.ErrDesc.Len = sizeof(ErrorInfo_struct);
c->cmd.ctlr = h->ctlr;
c->cmd.err_info = &c->Err;
return (CommandList_struct *) c;
}
static void
scsi_cmd_free(ctlr_info_t *h, CommandList_struct *c)
{
/* assume only one process in here at a time, locking done by caller. */
/* use h->lock */
/* drop the free memory chunk on top of the stack. */
struct cciss_scsi_adapter_data_t *sa;
struct cciss_scsi_cmd_stack_t *stk;
sa = h->scsi_ctlr;
stk = &sa->cmd_stack;
stk->top++;
if (stk->top >= stk->nelems) {
dev_err(&h->pdev->dev,
"scsi_cmd_free called too many times.\n");
BUG();
}
stk->elem[stk->top] = (struct cciss_scsi_cmd_stack_elem_t *) c;
}
static int
scsi_cmd_stack_setup(ctlr_info_t *h, struct cciss_scsi_adapter_data_t *sa)
{
int i;
struct cciss_scsi_cmd_stack_t *stk;
size_t size;
stk = &sa->cmd_stack;
stk->nelems = cciss_tape_cmds + 2;
sa->cmd_sg_list = cciss_allocate_sg_chain_blocks(h,
h->chainsize, stk->nelems);
if (!sa->cmd_sg_list && h->chainsize > 0)
return -ENOMEM;
size = sizeof(struct cciss_scsi_cmd_stack_elem_t) * stk->nelems;
/* Check alignment, see cciss_cmd.h near CommandList_struct def. */
BUILD_BUG_ON((sizeof(*stk->pool) % COMMANDLIST_ALIGNMENT) != 0);
/* pci_alloc_consistent guarantees 32-bit DMA address will be used */
stk->pool = (struct cciss_scsi_cmd_stack_elem_t *)
pci_alloc_consistent(h->pdev, size, &stk->cmd_pool_handle);
if (stk->pool == NULL) {
cciss_free_sg_chain_blocks(sa->cmd_sg_list, stk->nelems);
sa->cmd_sg_list = NULL;
return -ENOMEM;
}
stk->elem = kmalloc(sizeof(stk->elem[0]) * stk->nelems, GFP_KERNEL);
if (!stk->elem) {
pci_free_consistent(h->pdev, size, stk->pool,
stk->cmd_pool_handle);
return -1;
}
for (i = 0; i < stk->nelems; i++) {
stk->elem[i] = &stk->pool[i];
stk->elem[i]->busaddr = (__u32) (stk->cmd_pool_handle +
(sizeof(struct cciss_scsi_cmd_stack_elem_t) * i));
stk->elem[i]->cmdindex = i;
}
stk->top = stk->nelems-1;
return 0;
}
static void
scsi_cmd_stack_free(ctlr_info_t *h)
{
struct cciss_scsi_adapter_data_t *sa;
struct cciss_scsi_cmd_stack_t *stk;
size_t size;
sa = h->scsi_ctlr;
stk = &sa->cmd_stack;
if (stk->top != stk->nelems-1) {
dev_warn(&h->pdev->dev,
"bug: %d scsi commands are still outstanding.\n",
stk->nelems - stk->top);
}
size = sizeof(struct cciss_scsi_cmd_stack_elem_t) * stk->nelems;
pci_free_consistent(h->pdev, size, stk->pool, stk->cmd_pool_handle);
stk->pool = NULL;
cciss_free_sg_chain_blocks(sa->cmd_sg_list, stk->nelems);
kfree(stk->elem);
stk->elem = NULL;
}
#if 0
static void
print_cmd(CommandList_struct *cp)
{
printk("queue:%d\n", cp->Header.ReplyQueue);
printk("sglist:%d\n", cp->Header.SGList);
printk("sgtot:%d\n", cp->Header.SGTotal);
printk("Tag:0x%08x/0x%08x\n", cp->Header.Tag.upper,
cp->Header.Tag.lower);
printk("LUN:0x%8phN\n", cp->Header.LUN.LunAddrBytes);
printk("CDBLen:%d\n", cp->Request.CDBLen);
printk("Type:%d\n",cp->Request.Type.Type);
printk("Attr:%d\n",cp->Request.Type.Attribute);
printk(" Dir:%d\n",cp->Request.Type.Direction);
printk("Timeout:%d\n",cp->Request.Timeout);
printk("CDB: %16ph\n", cp->Request.CDB);
printk("edesc.Addr: 0x%08x/0%08x, Len = %d\n",
cp->ErrDesc.Addr.upper, cp->ErrDesc.Addr.lower,
cp->ErrDesc.Len);
printk("sgs..........Errorinfo:\n");
printk("scsistatus:%d\n", cp->err_info->ScsiStatus);
printk("senselen:%d\n", cp->err_info->SenseLen);
printk("cmd status:%d\n", cp->err_info->CommandStatus);
printk("resid cnt:%d\n", cp->err_info->ResidualCnt);
printk("offense size:%d\n", cp->err_info->MoreErrInfo.Invalid_Cmd.offense_size);
printk("offense byte:%d\n", cp->err_info->MoreErrInfo.Invalid_Cmd.offense_num);
printk("offense value:%d\n", cp->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
}
#endif
static int
find_bus_target_lun(ctlr_info_t *h, int *bus, int *target, int *lun)
{
/* finds an unused bus, target, lun for a new device */
/* assumes h->scsi_ctlr->lock is held */
int i, found=0;
unsigned char target_taken[CCISS_MAX_SCSI_DEVS_PER_HBA];
memset(&target_taken[0], 0, CCISS_MAX_SCSI_DEVS_PER_HBA);
target_taken[SELF_SCSI_ID] = 1;
for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++)
target_taken[ccissscsi[h->ctlr].dev[i].target] = 1;
for (i = 0; i < CCISS_MAX_SCSI_DEVS_PER_HBA; i++) {
if (!target_taken[i]) {
*bus = 0; *target=i; *lun = 0; found=1;
break;
}
}
return (!found);
}
struct scsi2map {
char scsi3addr[8];
int bus, target, lun;
};
static int
cciss_scsi_add_entry(ctlr_info_t *h, int hostno,
struct cciss_scsi_dev_t *device,
struct scsi2map *added, int *nadded)
{
/* assumes h->scsi_ctlr->lock is held */
int n = ccissscsi[h->ctlr].ndevices;
struct cciss_scsi_dev_t *sd;
int i, bus, target, lun;
unsigned char addr1[8], addr2[8];
if (n >= CCISS_MAX_SCSI_DEVS_PER_HBA) {
dev_warn(&h->pdev->dev, "Too many devices, "
"some will be inaccessible.\n");
return -1;
}
bus = target = -1;
lun = 0;
/* Is this device a non-zero lun of a multi-lun device */
/* byte 4 of the 8-byte LUN addr will contain the logical unit no. */
if (device->scsi3addr[4] != 0) {
/* Search through our list and find the device which */
/* has the same 8 byte LUN address, excepting byte 4. */
/* Assign the same bus and target for this new LUN. */
/* Use the logical unit number from the firmware. */
memcpy(addr1, device->scsi3addr, 8);
addr1[4] = 0;
for (i = 0; i < n; i++) {
sd = &ccissscsi[h->ctlr].dev[i];
memcpy(addr2, sd->scsi3addr, 8);
addr2[4] = 0;
/* differ only in byte 4? */
if (memcmp(addr1, addr2, 8) == 0) {
bus = sd->bus;
target = sd->target;
lun = device->scsi3addr[4];
break;
}
}
}
sd = &ccissscsi[h->ctlr].dev[n];
if (lun == 0) {
if (find_bus_target_lun(h,
&sd->bus, &sd->target, &sd->lun) != 0)
return -1;
} else {
sd->bus = bus;
sd->target = target;
sd->lun = lun;
}
added[*nadded].bus = sd->bus;
added[*nadded].target = sd->target;
added[*nadded].lun = sd->lun;
(*nadded)++;
memcpy(sd->scsi3addr, device->scsi3addr, 8);
memcpy(sd->vendor, device->vendor, sizeof(sd->vendor));
memcpy(sd->revision, device->revision, sizeof(sd->revision));
memcpy(sd->device_id, device->device_id, sizeof(sd->device_id));
sd->devtype = device->devtype;
ccissscsi[h->ctlr].ndevices++;
/* initially, (before registering with scsi layer) we don't
know our hostno and we don't want to print anything first
time anyway (the scsi layer's inquiries will show that info) */
if (hostno != -1)
dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n",
scsi_device_type(sd->devtype), hostno,
sd->bus, sd->target, sd->lun);
return 0;
}
static void
cciss_scsi_remove_entry(ctlr_info_t *h, int hostno, int entry,
struct scsi2map *removed, int *nremoved)
{
/* assumes h->ctlr]->scsi_ctlr->lock is held */
int i;
struct cciss_scsi_dev_t sd;
if (entry < 0 || entry >= CCISS_MAX_SCSI_DEVS_PER_HBA) return;
sd = ccissscsi[h->ctlr].dev[entry];
removed[*nremoved].bus = sd.bus;
removed[*nremoved].target = sd.target;
removed[*nremoved].lun = sd.lun;
(*nremoved)++;
for (i = entry; i < ccissscsi[h->ctlr].ndevices-1; i++)
ccissscsi[h->ctlr].dev[i] = ccissscsi[h->ctlr].dev[i+1];
ccissscsi[h->ctlr].ndevices--;
dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n",
scsi_device_type(sd.devtype), hostno,
sd.bus, sd.target, sd.lun);
}
#define SCSI3ADDR_EQ(a,b) ( \
(a)[7] == (b)[7] && \
(a)[6] == (b)[6] && \
(a)[5] == (b)[5] && \
(a)[4] == (b)[4] && \
(a)[3] == (b)[3] && \
(a)[2] == (b)[2] && \
(a)[1] == (b)[1] && \
(a)[0] == (b)[0])
static void fixup_botched_add(ctlr_info_t *h, char *scsi3addr)
{
/* called when scsi_add_device fails in order to re-adjust */
/* ccissscsi[] to match the mid layer's view. */
unsigned long flags;
int i, j;
CPQ_TAPE_LOCK(h, flags);
for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++) {
if (memcmp(scsi3addr,
ccissscsi[h->ctlr].dev[i].scsi3addr, 8) == 0) {
for (j = i; j < ccissscsi[h->ctlr].ndevices-1; j++)
ccissscsi[h->ctlr].dev[j] =
ccissscsi[h->ctlr].dev[j+1];
ccissscsi[h->ctlr].ndevices--;
break;
}
}
CPQ_TAPE_UNLOCK(h, flags);
}
static int device_is_the_same(struct cciss_scsi_dev_t *dev1,
struct cciss_scsi_dev_t *dev2)
{
return dev1->devtype == dev2->devtype &&
memcmp(dev1->scsi3addr, dev2->scsi3addr,
sizeof(dev1->scsi3addr)) == 0 &&
memcmp(dev1->device_id, dev2->device_id,
sizeof(dev1->device_id)) == 0 &&
memcmp(dev1->vendor, dev2->vendor,
sizeof(dev1->vendor)) == 0 &&
memcmp(dev1->model, dev2->model,
sizeof(dev1->model)) == 0 &&
memcmp(dev1->revision, dev2->revision,
sizeof(dev1->revision)) == 0;
}
static int
adjust_cciss_scsi_table(ctlr_info_t *h, int hostno,
struct cciss_scsi_dev_t sd[], int nsds)
{
/* sd contains scsi3 addresses and devtypes, but
bus target and lun are not filled in. This funciton
takes what's in sd to be the current and adjusts
ccissscsi[] to be in line with what's in sd. */
int i,j, found, changes=0;
struct cciss_scsi_dev_t *csd;
unsigned long flags;
struct scsi2map *added, *removed;
int nadded, nremoved;
struct Scsi_Host *sh = NULL;
added = kzalloc(sizeof(*added) * CCISS_MAX_SCSI_DEVS_PER_HBA,
GFP_KERNEL);
removed = kzalloc(sizeof(*removed) * CCISS_MAX_SCSI_DEVS_PER_HBA,
GFP_KERNEL);
if (!added || !removed) {
dev_warn(&h->pdev->dev,
"Out of memory in adjust_cciss_scsi_table\n");
goto free_and_out;
}
CPQ_TAPE_LOCK(h, flags);
if (hostno != -1) /* if it's not the first time... */
sh = h->scsi_ctlr->scsi_host;
/* find any devices in ccissscsi[] that are not in
sd[] and remove them from ccissscsi[] */
i = 0;
nremoved = 0;
nadded = 0;
while (i < ccissscsi[h->ctlr].ndevices) {
csd = &ccissscsi[h->ctlr].dev[i];
found=0;
for (j=0;j<nsds;j++) {
if (SCSI3ADDR_EQ(sd[j].scsi3addr,
csd->scsi3addr)) {
if (device_is_the_same(&sd[j], csd))
found=2;
else
found=1;
break;
}
}
if (found == 0) { /* device no longer present. */
changes++;
cciss_scsi_remove_entry(h, hostno, i,
removed, &nremoved);
/* remove ^^^, hence i not incremented */
} else if (found == 1) { /* device is different in some way */
changes++;
dev_info(&h->pdev->dev,
"device c%db%dt%dl%d has changed.\n",
hostno, csd->bus, csd->target, csd->lun);
cciss_scsi_remove_entry(h, hostno, i,
removed, &nremoved);
/* remove ^^^, hence i not incremented */
if (cciss_scsi_add_entry(h, hostno, &sd[j],
added, &nadded) != 0)
/* we just removed one, so add can't fail. */
BUG();
csd->devtype = sd[j].devtype;
memcpy(csd->device_id, sd[j].device_id,
sizeof(csd->device_id));
memcpy(csd->vendor, sd[j].vendor,
sizeof(csd->vendor));
memcpy(csd->model, sd[j].model,
sizeof(csd->model));
memcpy(csd->revision, sd[j].revision,
sizeof(csd->revision));
} else /* device is same as it ever was, */
i++; /* so just move along. */
}
/* Now, make sure every device listed in sd[] is also
listed in ccissscsi[], adding them if they aren't found */
for (i=0;i<nsds;i++) {
found=0;
for (j = 0; j < ccissscsi[h->ctlr].ndevices; j++) {
csd = &ccissscsi[h->ctlr].dev[j];
if (SCSI3ADDR_EQ(sd[i].scsi3addr,
csd->scsi3addr)) {
if (device_is_the_same(&sd[i], csd))
found=2; /* found device */
else
found=1; /* found a bug. */
break;
}
}
if (!found) {
changes++;
if (cciss_scsi_add_entry(h, hostno, &sd[i],
added, &nadded) != 0)
break;
} else if (found == 1) {
/* should never happen... */
changes++;
dev_warn(&h->pdev->dev,
"device unexpectedly changed\n");
/* but if it does happen, we just ignore that device */
}
}
CPQ_TAPE_UNLOCK(h, flags);
/* Don't notify scsi mid layer of any changes the first time through */
/* (or if there are no changes) scsi_scan_host will do it later the */
/* first time through. */
if (hostno == -1 || !changes)
goto free_and_out;
/* Notify scsi mid layer of any removed devices */
for (i = 0; i < nremoved; i++) {
struct scsi_device *sdev =
scsi_device_lookup(sh, removed[i].bus,
removed[i].target, removed[i].lun);
if (sdev != NULL) {
scsi_remove_device(sdev);
scsi_device_put(sdev);
} else {
/* We don't expect to get here. */
/* future cmds to this device will get selection */
/* timeout as if the device was gone. */
dev_warn(&h->pdev->dev, "didn't find "
"c%db%dt%dl%d\n for removal.",
hostno, removed[i].bus,
removed[i].target, removed[i].lun);
}
}
/* Notify scsi mid layer of any added devices */
for (i = 0; i < nadded; i++) {
int rc;
rc = scsi_add_device(sh, added[i].bus,
added[i].target, added[i].lun);
if (rc == 0)
continue;
dev_warn(&h->pdev->dev, "scsi_add_device "
"c%db%dt%dl%d failed, device not added.\n",
hostno, added[i].bus, added[i].target, added[i].lun);
/* now we have to remove it from ccissscsi, */
/* since it didn't get added to scsi mid layer */
fixup_botched_add(h, added[i].scsi3addr);
}
free_and_out:
kfree(added);
kfree(removed);
return 0;
}
static int
lookup_scsi3addr(ctlr_info_t *h, int bus, int target, int lun, char *scsi3addr)
{
int i;
struct cciss_scsi_dev_t *sd;
unsigned long flags;
CPQ_TAPE_LOCK(h, flags);
for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++) {
sd = &ccissscsi[h->ctlr].dev[i];
if (sd->bus == bus &&
sd->target == target &&
sd->lun == lun) {
memcpy(scsi3addr, &sd->scsi3addr[0], 8);
CPQ_TAPE_UNLOCK(h, flags);
return 0;
}
}
CPQ_TAPE_UNLOCK(h, flags);
return -1;
}
static void
cciss_scsi_setup(ctlr_info_t *h)
{
struct cciss_scsi_adapter_data_t * shba;
ccissscsi[h->ctlr].ndevices = 0;
shba = kmalloc(sizeof(*shba), GFP_KERNEL);
if (shba == NULL)
return;
shba->scsi_host = NULL;
spin_lock_init(&shba->lock);
shba->registered = 0;
if (scsi_cmd_stack_setup(h, shba) != 0) {
kfree(shba);
shba = NULL;
}
h->scsi_ctlr = shba;
return;
}
static void complete_scsi_command(CommandList_struct *c, int timeout,
__u32 tag)
{
struct scsi_cmnd *cmd;
ctlr_info_t *h;
ErrorInfo_struct *ei;
ei = c->err_info;
/* First, see if it was a message rather than a command */
if (c->Request.Type.Type == TYPE_MSG) {
c->cmd_type = CMD_MSG_DONE;
return;
}
cmd = (struct scsi_cmnd *) c->scsi_cmd;
h = hba[c->ctlr];
scsi_dma_unmap(cmd);
if (c->Header.SGTotal > h->max_cmd_sgentries)
cciss_unmap_sg_chain_block(h, c);
cmd->result = (DID_OK << 16); /* host byte */
cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
/* cmd->result |= (GOOD < 1); */ /* status byte */
cmd->result |= (ei->ScsiStatus);
/* printk("Scsistatus is 0x%02x\n", ei->ScsiStatus); */
/* copy the sense data whether we need to or not. */
memcpy(cmd->sense_buffer, ei->SenseInfo,
ei->SenseLen > SCSI_SENSE_BUFFERSIZE ?
SCSI_SENSE_BUFFERSIZE :
ei->SenseLen);
scsi_set_resid(cmd, ei->ResidualCnt);
if (ei->CommandStatus != 0) { /* an error has occurred */
switch (ei->CommandStatus) {
case CMD_TARGET_STATUS:
/* Pass it up to the upper layers... */
if (!ei->ScsiStatus) {
/* Ordinarily, this case should never happen, but there is a bug
in some released firmware revisions that allows it to happen
if, for example, a 4100 backplane loses power and the tape
drive is in it. We assume that it's a fatal error of some
kind because we can't show that it wasn't. We will make it
look like selection timeout since that is the most common
reason for this to occur, and it's severe enough. */
cmd->result = DID_NO_CONNECT << 16;
}
break;
case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
break;
case CMD_DATA_OVERRUN:
dev_warn(&h->pdev->dev, "%p has"
" completed with data overrun "
"reported\n", c);
break;
case CMD_INVALID: {
/*
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1, c, sizeof(*c), false);
print_cmd(c);
*/
/* We get CMD_INVALID if you address a non-existent tape drive instead
of a selection timeout (no response). You will see this if you yank
out a tape drive, then try to access it. This is kind of a shame
because it means that any other CMD_INVALID (e.g. driver bug) will
get interpreted as a missing target. */
cmd->result = DID_NO_CONNECT << 16;
}
break;
case CMD_PROTOCOL_ERR:
cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev,
"%p has protocol error\n", c);
break;
case CMD_HARDWARE_ERR:
cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev,
"%p had hardware error\n", c);
break;
case CMD_CONNECTION_LOST:
cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev,
"%p had connection lost\n", c);
break;
case CMD_ABORTED:
cmd->result = DID_ABORT << 16;
dev_warn(&h->pdev->dev, "%p was aborted\n", c);
break;
case CMD_ABORT_FAILED:
cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev,
"%p reports abort failed\n", c);
break;
case CMD_UNSOLICITED_ABORT:
cmd->result = DID_ABORT << 16;
dev_warn(&h->pdev->dev, "%p aborted due to an "
"unsolicited abort\n", c);
break;
case CMD_TIMEOUT:
cmd->result = DID_TIME_OUT << 16;
dev_warn(&h->pdev->dev, "%p timedout\n", c);
break;
case CMD_UNABORTABLE:
cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev, "c %p command "
"unabortable\n", c);
break;
default:
cmd->result = DID_ERROR << 16;
dev_warn(&h->pdev->dev,
"%p returned unknown status %x\n", c,
ei->CommandStatus);
}
}
cmd->scsi_done(cmd);
scsi_cmd_free(h, c);
}
static int
cciss_scsi_detect(ctlr_info_t *h)
{
struct Scsi_Host *sh;
int error;
sh = scsi_host_alloc(&cciss_driver_template, sizeof(struct ctlr_info *));
if (sh == NULL)
goto fail;
sh->io_port = 0; // good enough? FIXME,
sh->n_io_port = 0; // I don't think we use these two...
sh->this_id = SELF_SCSI_ID;
sh->can_queue = cciss_tape_cmds;
sh->sg_tablesize = h->maxsgentries;
sh->max_cmd_len = MAX_COMMAND_SIZE;
sh->max_sectors = h->cciss_max_sectors;
((struct cciss_scsi_adapter_data_t *)
h->scsi_ctlr)->scsi_host = sh;
sh->hostdata[0] = (unsigned long) h;
sh->irq = h->intr[SIMPLE_MODE_INT];
sh->unique_id = sh->irq;
error = scsi_add_host(sh, &h->pdev->dev);
if (error)
goto fail_host_put;
scsi_scan_host(sh);
return 1;
fail_host_put:
scsi_host_put(sh);
fail:
return 0;
}
static void
cciss_unmap_one(struct pci_dev *pdev,
CommandList_struct *c,
size_t buflen,
int data_direction)
{
u64bit addr64;
addr64.val32.lower = c->SG[0].Addr.lower;
addr64.val32.upper = c->SG[0].Addr.upper;
pci_unmap_single(pdev, (dma_addr_t) addr64.val, buflen, data_direction);
}
static void
cciss_map_one(struct pci_dev *pdev,
CommandList_struct *c,
unsigned char *buf,
size_t buflen,
int data_direction)
{
__u64 addr64;
addr64 = (__u64) pci_map_single(pdev, buf, buflen, data_direction);
c->SG[0].Addr.lower =
(__u32) (addr64 & (__u64) 0x00000000FFFFFFFF);
c->SG[0].Addr.upper =
(__u32) ((addr64 >> 32) & (__u64) 0x00000000FFFFFFFF);
c->SG[0].Len = buflen;
c->Header.SGList = (__u8) 1; /* no. SGs contig in this cmd */
c->Header.SGTotal = (__u16) 1; /* total sgs in this cmd list */
}
static int
cciss_scsi_do_simple_cmd(ctlr_info_t *h,
CommandList_struct *c,
unsigned char *scsi3addr,
unsigned char *cdb,
unsigned char cdblen,
unsigned char *buf, int bufsize,
int direction)
{
DECLARE_COMPLETION_ONSTACK(wait);
c->cmd_type = CMD_IOCTL_PEND; /* treat this like an ioctl */
c->scsi_cmd = NULL;
c->Header.ReplyQueue = 0; /* unused in simple mode */
memcpy(&c->Header.LUN, scsi3addr, sizeof(c->Header.LUN));
c->Header.Tag.lower = c->busaddr; /* Use k. address of cmd as tag */
// Fill in the request block...
/* printk("Using scsi3addr 0x%02x%0x2%0x2%0x2%0x2%0x2%0x2%0x2\n",
scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]); */
memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
memcpy(c->Request.CDB, cdb, cdblen);
c->Request.Timeout = 0;
c->Request.CDBLen = cdblen;
c->Request.Type.Type = TYPE_CMD;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = direction;
/* Fill in the SG list and do dma mapping */
cciss_map_one(h->pdev, c, (unsigned char *) buf,
bufsize, DMA_FROM_DEVICE);
c->waiting = &wait;
enqueue_cmd_and_start_io(h, c);
wait_for_completion(&wait);
/* undo the dma mapping */
cciss_unmap_one(h->pdev, c, bufsize, DMA_FROM_DEVICE);
return(0);
}
static void
cciss_scsi_interpret_error(ctlr_info_t *h, CommandList_struct *c)
{
ErrorInfo_struct *ei;
ei = c->err_info;
switch (ei->CommandStatus) {
case CMD_TARGET_STATUS:
dev_warn(&h->pdev->dev,
"cmd %p has completed with errors\n", c);
dev_warn(&h->pdev->dev,
"cmd %p has SCSI Status = %x\n",
c, ei->ScsiStatus);
if (ei->ScsiStatus == 0)
dev_warn(&h->pdev->dev,
"SCSI status is abnormally zero. "
"(probably indicates selection timeout "
"reported incorrectly due to a known "
"firmware bug, circa July, 2001.)\n");
break;
case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
dev_info(&h->pdev->dev, "UNDERRUN\n");
break;
case CMD_DATA_OVERRUN:
dev_warn(&h->pdev->dev, "%p has"
" completed with data overrun "
"reported\n", c);
break;
case CMD_INVALID: {
/* controller unfortunately reports SCSI passthru's */
/* to non-existent targets as invalid commands. */
dev_warn(&h->pdev->dev,
"%p is reported invalid (probably means "
"target device no longer present)\n", c);
/*
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1, c, sizeof(*c), false);
print_cmd(c);
*/
}
break;
case CMD_PROTOCOL_ERR:
dev_warn(&h->pdev->dev, "%p has protocol error\n", c);
break;
case CMD_HARDWARE_ERR:
/* cmd->result = DID_ERROR << 16; */
dev_warn(&h->pdev->dev, "%p had hardware error\n", c);
break;
case CMD_CONNECTION_LOST:
dev_warn(&h->pdev->dev, "%p had connection lost\n", c);
break;
case CMD_ABORTED:
dev_warn(&h->pdev->dev, "%p was aborted\n", c);
break;
case CMD_ABORT_FAILED:
dev_warn(&h->pdev->dev,
"%p reports abort failed\n", c);
break;
case CMD_UNSOLICITED_ABORT:
dev_warn(&h->pdev->dev,
"%p aborted due to an unsolicited abort\n", c);
break;
case CMD_TIMEOUT:
dev_warn(&h->pdev->dev, "%p timedout\n", c);
break;
case CMD_UNABORTABLE:
dev_warn(&h->pdev->dev,
"%p unabortable\n", c);
break;
default:
dev_warn(&h->pdev->dev,
"%p returned unknown status %x\n",
c, ei->CommandStatus);
}
}
static int
cciss_scsi_do_inquiry(ctlr_info_t *h, unsigned char *scsi3addr,
unsigned char page, unsigned char *buf,
unsigned char bufsize)
{
int rc;
CommandList_struct *c;
char cdb[6];
ErrorInfo_struct *ei;
unsigned long flags;
spin_lock_irqsave(&h->lock, flags);
c = scsi_cmd_alloc(h);
spin_unlock_irqrestore(&h->lock, flags);
if (c == NULL) { /* trouble... */
printk("cmd_alloc returned NULL!\n");
return -1;
}
ei = c->err_info;
cdb[0] = CISS_INQUIRY;
cdb[1] = (page != 0);
cdb[2] = page;
cdb[3] = 0;
cdb[4] = bufsize;
cdb[5] = 0;
rc = cciss_scsi_do_simple_cmd(h, c, scsi3addr, cdb,
6, buf, bufsize, XFER_READ);
if (rc != 0) return rc; /* something went wrong */
if (ei->CommandStatus != 0 &&
ei->CommandStatus != CMD_DATA_UNDERRUN) {
cciss_scsi_interpret_error(h, c);
rc = -1;
}
spin_lock_irqsave(&h->lock, flags);
scsi_cmd_free(h, c);
spin_unlock_irqrestore(&h->lock, flags);
return rc;
}
/* Get the device id from inquiry page 0x83 */
static int cciss_scsi_get_device_id(ctlr_info_t *h, unsigned char *scsi3addr,
unsigned char *device_id, int buflen)
{
int rc;
unsigned char *buf;
if (buflen > 16)
buflen = 16;
buf = kzalloc(64, GFP_KERNEL);
if (!buf)
return -1;
rc = cciss_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64);
if (rc == 0)
memcpy(device_id, &buf[8], buflen);
kfree(buf);
return rc != 0;
}
static int
cciss_scsi_do_report_phys_luns(ctlr_info_t *h,
ReportLunData_struct *buf, int bufsize)
{
int rc;
CommandList_struct *c;
unsigned char cdb[12];
unsigned char scsi3addr[8];
ErrorInfo_struct *ei;
unsigned long flags;
spin_lock_irqsave(&h->lock, flags);
c = scsi_cmd_alloc(h);
spin_unlock_irqrestore(&h->lock, flags);
if (c == NULL) { /* trouble... */
printk("cmd_alloc returned NULL!\n");
return -1;
}
memset(&scsi3addr[0], 0, 8); /* address the controller */
cdb[0] = CISS_REPORT_PHYS;
cdb[1] = 0;
cdb[2] = 0;
cdb[3] = 0;
cdb[4] = 0;
cdb[5] = 0;
cdb[6] = (bufsize >> 24) & 0xFF; //MSB
cdb[7] = (bufsize >> 16) & 0xFF;
cdb[8] = (bufsize >> 8) & 0xFF;
cdb[9] = bufsize & 0xFF;
cdb[10] = 0;
cdb[11] = 0;
rc = cciss_scsi_do_simple_cmd(h, c, scsi3addr,
cdb, 12,
(unsigned char *) buf,
bufsize, XFER_READ);
if (rc != 0) return rc; /* something went wrong */
ei = c->err_info;
if (ei->CommandStatus != 0 &&
ei->CommandStatus != CMD_DATA_UNDERRUN) {
cciss_scsi_interpret_error(h, c);
rc = -1;
}
spin_lock_irqsave(&h->lock, flags);
scsi_cmd_free(h, c);
spin_unlock_irqrestore(&h->lock, flags);
return rc;
}
static void
cciss_update_non_disk_devices(ctlr_info_t *h, int hostno)
{
/* the idea here is we could get notified from /proc
that some devices have changed, so we do a report
physical luns cmd, and adjust our list of devices
accordingly. (We can't rely on the scsi-mid layer just
doing inquiries, because the "busses" that the scsi
mid-layer probes are totally fabricated by this driver,
so new devices wouldn't show up.
the scsi3addr's of devices won't change so long as the
adapter is not reset. That means we can rescan and
tell which devices we already know about, vs. new
devices, vs. disappearing devices.
Also, if you yank out a tape drive, then put in a disk
in it's place, (say, a configured volume from another
array controller for instance) _don't_ poke this driver
(so it thinks it's still a tape, but _do_ poke the scsi
mid layer, so it does an inquiry... the scsi mid layer
will see the physical disk. This would be bad. Need to
think about how to prevent that. One idea would be to
snoop all scsi responses and if an inquiry repsonse comes
back that reports a disk, chuck it an return selection
timeout instead and adjust our table... Not sure i like
that though.
*/
#define OBDR_TAPE_INQ_SIZE 49
#define OBDR_TAPE_SIG "$DR-10"
ReportLunData_struct *ld_buff;
unsigned char *inq_buff;
unsigned char scsi3addr[8];
__u32 num_luns=0;
unsigned char *ch;
struct cciss_scsi_dev_t *currentsd, *this_device;
int ncurrent=0;
int reportlunsize = sizeof(*ld_buff) + CISS_MAX_PHYS_LUN * 8;
int i;
ld_buff = kzalloc(reportlunsize, GFP_KERNEL);
inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
currentsd = kzalloc(sizeof(*currentsd) *
(CCISS_MAX_SCSI_DEVS_PER_HBA+1), GFP_KERNEL);
if (ld_buff == NULL || inq_buff == NULL || currentsd == NULL) {
printk(KERN_ERR "cciss: out of memory\n");
goto out;
}
this_device = &currentsd[CCISS_MAX_SCSI_DEVS_PER_HBA];
if (cciss_scsi_do_report_phys_luns(h, ld_buff, reportlunsize) == 0) {
ch = &ld_buff->LUNListLength[0];
num_luns = ((ch[0]<<24) | (ch[1]<<16) | (ch[2]<<8) | ch[3]) / 8;
if (num_luns > CISS_MAX_PHYS_LUN) {
printk(KERN_WARNING
"cciss: Maximum physical LUNs (%d) exceeded. "
"%d LUNs ignored.\n", CISS_MAX_PHYS_LUN,
num_luns - CISS_MAX_PHYS_LUN);
num_luns = CISS_MAX_PHYS_LUN;
}
}
else {
printk(KERN_ERR "cciss: Report physical LUNs failed.\n");
goto out;
}
/* adjust our table of devices */
for (i = 0; i < num_luns; i++) {
/* for each physical lun, do an inquiry */
if (ld_buff->LUN[i][3] & 0xC0) continue;
memset(inq_buff, 0, OBDR_TAPE_INQ_SIZE);
memcpy(&scsi3addr[0], &ld_buff->LUN[i][0], 8);
if (cciss_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
(unsigned char) OBDR_TAPE_INQ_SIZE) != 0)
/* Inquiry failed (msg printed already) */
continue; /* so we will skip this device. */
this_device->devtype = (inq_buff[0] & 0x1f);
this_device->bus = -1;
this_device->target = -1;
this_device->lun = -1;
memcpy(this_device->scsi3addr, scsi3addr, 8);
memcpy(this_device->vendor, &inq_buff[8],
sizeof(this_device->vendor));
memcpy(this_device->model, &inq_buff[16],
sizeof(this_device->model));
memcpy(this_device->revision, &inq_buff[32],
sizeof(this_device->revision));
memset(this_device->device_id, 0,
sizeof(this_device->device_id));
cciss_scsi_get_device_id(h, scsi3addr,
this_device->device_id, sizeof(this_device->device_id));
switch (this_device->devtype) {
case 0x05: /* CD-ROM */ {
/* We don't *really* support actual CD-ROM devices,
* just this "One Button Disaster Recovery" tape drive
* which temporarily pretends to be a CD-ROM drive.
* So we check that the device is really an OBDR tape
* device by checking for "$DR-10" in bytes 43-48 of
* the inquiry data.
*/
char obdr_sig[7];
strncpy(obdr_sig, &inq_buff[43], 6);
obdr_sig[6] = '\0';
if (strncmp(obdr_sig, OBDR_TAPE_SIG, 6) != 0)
/* Not OBDR device, ignore it. */
break;
}
/* fall through . . . */
case 0x01: /* sequential access, (tape) */
case 0x08: /* medium changer */
if (ncurrent >= CCISS_MAX_SCSI_DEVS_PER_HBA) {
printk(KERN_INFO "cciss%d: %s ignored, "
"too many devices.\n", h->ctlr,
scsi_device_type(this_device->devtype));
break;
}
currentsd[ncurrent] = *this_device;
ncurrent++;
break;
default:
break;
}
}
adjust_cciss_scsi_table(h, hostno, currentsd, ncurrent);
out:
kfree(inq_buff);
kfree(ld_buff);
kfree(currentsd);
return;
}
static int
is_keyword(char *ptr, int len, char *verb) // Thanks to ncr53c8xx.c
{
int verb_len = strlen(verb);
if (len >= verb_len && !memcmp(verb,ptr,verb_len))
return verb_len;
else
return 0;
}
static int
cciss_scsi_user_command(ctlr_info_t *h, int hostno, char *buffer, int length)
{
int arg_len;
if ((arg_len = is_keyword(buffer, length, "rescan")) != 0)
cciss_update_non_disk_devices(h, hostno);
else
return -EINVAL;
return length;
}
static int
cciss_scsi_write_info(struct Scsi_Host *sh,
char *buffer, /* data buffer */
int length) /* length of data in buffer */
{
ctlr_info_t *h = (ctlr_info_t *) sh->hostdata[0];
if (h == NULL) /* This really shouldn't ever happen. */
return -EINVAL;
return cciss_scsi_user_command(h, sh->host_no,
buffer, length);
}
static int
cciss_scsi_show_info(struct seq_file *m, struct Scsi_Host *sh)
{
ctlr_info_t *h = (ctlr_info_t *) sh->hostdata[0];
int i;
if (h == NULL) /* This really shouldn't ever happen. */
return -EINVAL;
seq_printf(m, "cciss%d: SCSI host: %d\n",
h->ctlr, sh->host_no);
/* this information is needed by apps to know which cciss
device corresponds to which scsi host number without
having to open a scsi target device node. The device
information is not a duplicate of /proc/scsi/scsi because
the two may be out of sync due to scsi hotplug, rather
this info is for an app to be able to use to know how to
get them back in sync. */
for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++) {
struct cciss_scsi_dev_t *sd =
&ccissscsi[h->ctlr].dev[i];
seq_printf(m, "c%db%dt%dl%d %02d "
"0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
sh->host_no, sd->bus, sd->target, sd->lun,
sd->devtype,
sd->scsi3addr[0], sd->scsi3addr[1],
sd->scsi3addr[2], sd->scsi3addr[3],
sd->scsi3addr[4], sd->scsi3addr[5],
sd->scsi3addr[6], sd->scsi3addr[7]);
}
return 0;
}
/* cciss_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
dma mapping and fills in the scatter gather entries of the
cciss command, c. */
static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *c,
struct scsi_cmnd *cmd)
{
unsigned int len;
struct scatterlist *sg;
__u64 addr64;
int request_nsgs, i, chained, sg_index;
struct cciss_scsi_adapter_data_t *sa = h->scsi_ctlr;
SGDescriptor_struct *curr_sg;
BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
chained = 0;
sg_index = 0;
curr_sg = c->SG;
request_nsgs = scsi_dma_map(cmd);
if (request_nsgs) {
scsi_for_each_sg(cmd, sg, request_nsgs, i) {
if (sg_index + 1 == h->max_cmd_sgentries &&
!chained && request_nsgs - i > 1) {
chained = 1;
sg_index = 0;
curr_sg = sa->cmd_sg_list[c->cmdindex];
}
addr64 = (__u64) sg_dma_address(sg);
len = sg_dma_len(sg);
curr_sg[sg_index].Addr.lower =
(__u32) (addr64 & 0x0FFFFFFFFULL);
curr_sg[sg_index].Addr.upper =
(__u32) ((addr64 >> 32) & 0x0FFFFFFFFULL);
curr_sg[sg_index].Len = len;
curr_sg[sg_index].Ext = 0;
++sg_index;
}
if (chained)
cciss_map_sg_chain_block(h, c,
sa->cmd_sg_list[c->cmdindex],
(request_nsgs - (h->max_cmd_sgentries - 1)) *
sizeof(SGDescriptor_struct));
}
/* track how many SG entries we are using */
if (request_nsgs > h->maxSG)
h->maxSG = request_nsgs;
c->Header.SGTotal = (u16) request_nsgs + chained;
if (request_nsgs > h->max_cmd_sgentries)
c->Header.SGList = h->max_cmd_sgentries;
else
c->Header.SGList = c->Header.SGTotal;
return;
}
static int
cciss_scsi_queue_command_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
{
ctlr_info_t *h;
int rc;
unsigned char scsi3addr[8];
CommandList_struct *c;
unsigned long flags;
// Get the ptr to our adapter structure (hba[i]) out of cmd->host.
// We violate cmd->host privacy here. (Is there another way?)
h = (ctlr_info_t *) cmd->device->host->hostdata[0];
rc = lookup_scsi3addr(h, cmd->device->channel, cmd->device->id,
cmd->device->lun, scsi3addr);
if (rc != 0) {
/* the scsi nexus does not match any that we presented... */
/* pretend to mid layer that we got selection timeout */
cmd->result = DID_NO_CONNECT << 16;
done(cmd);
/* we might want to think about registering controller itself
as a processor device on the bus so sg binds to it. */
return 0;
}
/* Ok, we have a reasonable scsi nexus, so send the cmd down, and
see what the device thinks of it. */
spin_lock_irqsave(&h->lock, flags);
c = scsi_cmd_alloc(h);
spin_unlock_irqrestore(&h->lock, flags);
if (c == NULL) { /* trouble... */
dev_warn(&h->pdev->dev, "scsi_cmd_alloc returned NULL!\n");
/* FIXME: next 3 lines are -> BAD! <- */
cmd->result = DID_NO_CONNECT << 16;
done(cmd);
return 0;
}
// Fill in the command list header
cmd->scsi_done = done; // save this for use by completion code
/* save c in case we have to abort it */
cmd->host_scribble = (unsigned char *) c;
c->cmd_type = CMD_SCSI;
c->scsi_cmd = cmd;
c->Header.ReplyQueue = 0; /* unused in simple mode */
memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
c->Header.Tag.lower = c->busaddr; /* Use k. address of cmd as tag */
// Fill in the request block...
c->Request.Timeout = 0;
memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
c->Request.CDBLen = cmd->cmd_len;
memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
c->Request.Type.Type = TYPE_CMD;
c->Request.Type.Attribute = ATTR_SIMPLE;
switch (cmd->sc_data_direction) {
case DMA_TO_DEVICE:
c->Request.Type.Direction = XFER_WRITE;
break;
case DMA_FROM_DEVICE:
c->Request.Type.Direction = XFER_READ;
break;
case DMA_NONE:
c->Request.Type.Direction = XFER_NONE;
break;
case DMA_BIDIRECTIONAL:
// This can happen if a buggy application does a scsi passthru
// and sets both inlen and outlen to non-zero. ( see
// ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
c->Request.Type.Direction = XFER_RSVD;
// This is technically wrong, and cciss controllers should
// reject it with CMD_INVALID, which is the most correct
// response, but non-fibre backends appear to let it
// slide by, and give the same results as if this field
// were set correctly. Either way is acceptable for
// our purposes here.
break;
default:
dev_warn(&h->pdev->dev, "unknown data direction: %d\n",
cmd->sc_data_direction);
BUG();
break;
}
cciss_scatter_gather(h, c, cmd);
enqueue_cmd_and_start_io(h, c);
/* the cmd'll come back via intr handler in complete_scsi_command() */
return 0;
}
static DEF_SCSI_QCMD(cciss_scsi_queue_command)
static void cciss_unregister_scsi(ctlr_info_t *h)
{
struct cciss_scsi_adapter_data_t *sa;
struct cciss_scsi_cmd_stack_t *stk;
unsigned long flags;
/* we are being forcibly unloaded, and may not refuse. */
spin_lock_irqsave(&h->lock, flags);
sa = h->scsi_ctlr;
stk = &sa->cmd_stack;
/* if we weren't ever actually registered, don't unregister */
if (sa->registered) {
spin_unlock_irqrestore(&h->lock, flags);
scsi_remove_host(sa->scsi_host);
scsi_host_put(sa->scsi_host);
spin_lock_irqsave(&h->lock, flags);
}
/* set scsi_host to NULL so our detect routine will
find us on register */
sa->scsi_host = NULL;
spin_unlock_irqrestore(&h->lock, flags);
scsi_cmd_stack_free(h);
kfree(sa);
}
static int cciss_engage_scsi(ctlr_info_t *h)
{
struct cciss_scsi_adapter_data_t *sa;
struct cciss_scsi_cmd_stack_t *stk;
unsigned long flags;
spin_lock_irqsave(&h->lock, flags);
sa = h->scsi_ctlr;
stk = &sa->cmd_stack;
if (sa->registered) {
dev_info(&h->pdev->dev, "SCSI subsystem already engaged.\n");
spin_unlock_irqrestore(&h->lock, flags);
return -ENXIO;
}
sa->registered = 1;
spin_unlock_irqrestore(&h->lock, flags);
cciss_update_non_disk_devices(h, -1);
cciss_scsi_detect(h);
return 0;
}
static void
cciss_seq_tape_report(struct seq_file *seq, ctlr_info_t *h)
{
unsigned long flags;
CPQ_TAPE_LOCK(h, flags);
seq_printf(seq,
"Sequential access devices: %d\n\n",
ccissscsi[h->ctlr].ndevices);
CPQ_TAPE_UNLOCK(h, flags);
}
static int wait_for_device_to_become_ready(ctlr_info_t *h,
unsigned char lunaddr[])
{
int rc;
int count = 0;
int waittime = HZ;
CommandList_struct *c;
c = cmd_alloc(h);
if (!c) {
dev_warn(&h->pdev->dev, "out of memory in "
"wait_for_device_to_become_ready.\n");
return IO_ERROR;
}
/* Send test unit ready until device ready, or give up. */
while (count < 20) {
/* Wait for a bit. do this first, because if we send
* the TUR right away, the reset will just abort it.
*/
schedule_timeout_uninterruptible(waittime);
count++;
/* Increase wait time with each try, up to a point. */
if (waittime < (HZ * 30))
waittime = waittime * 2;
/* Send the Test Unit Ready */
rc = fill_cmd(h, c, TEST_UNIT_READY, NULL, 0, 0,
lunaddr, TYPE_CMD);
if (rc == 0)
rc = sendcmd_withirq_core(h, c, 0);
(void) process_sendcmd_error(h, c);
if (rc != 0)
goto retry_tur;
if (c->err_info->CommandStatus == CMD_SUCCESS)
break;
if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
if (c->err_info->SenseInfo[2] == NO_SENSE)
break;
if (c->err_info->SenseInfo[2] == UNIT_ATTENTION) {
unsigned char asc;
asc = c->err_info->SenseInfo[12];
check_for_unit_attention(h, c);
if (asc == POWER_OR_RESET)
break;
}
}
retry_tur:
dev_warn(&h->pdev->dev, "Waiting %d secs "
"for device to become ready.\n",
waittime / HZ);
rc = 1; /* device not ready. */
}
if (rc)
dev_warn(&h->pdev->dev, "giving up on device.\n");
else
dev_warn(&h->pdev->dev, "device is ready.\n");
cmd_free(h, c);
return rc;
}
/* Need at least one of these error handlers to keep ../scsi/hosts.c from
* complaining. Doing a host- or bus-reset can't do anything good here.
* Despite what it might say in scsi_error.c, there may well be commands
* on the controller, as the cciss driver registers twice, once as a block
* device for the logical drives, and once as a scsi device, for any tape
* drives. So we know there are no commands out on the tape drives, but we
* don't know there are no commands on the controller, and it is likely
* that there probably are, as the cciss block device is most commonly used
* as a boot device (embedded controller on HP/Compaq systems.)
*/
static int cciss_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
{
int rc;
CommandList_struct *cmd_in_trouble;
unsigned char lunaddr[8];
ctlr_info_t *h;
/* find the controller to which the command to be aborted was sent */
h = (ctlr_info_t *) scsicmd->device->host->hostdata[0];
if (h == NULL) /* paranoia */
return FAILED;
dev_warn(&h->pdev->dev, "resetting tape drive or medium changer.\n");
/* find the command that's giving us trouble */
cmd_in_trouble = (CommandList_struct *) scsicmd->host_scribble;
if (cmd_in_trouble == NULL) /* paranoia */
return FAILED;
memcpy(lunaddr, &cmd_in_trouble->Header.LUN.LunAddrBytes[0], 8);
/* send a reset to the SCSI LUN which the command was sent to */
rc = sendcmd_withirq(h, CCISS_RESET_MSG, NULL, 0, 0, lunaddr,
TYPE_MSG);
if (rc == 0 && wait_for_device_to_become_ready(h, lunaddr) == 0)
return SUCCESS;
dev_warn(&h->pdev->dev, "resetting device failed.\n");
return FAILED;
}
static int cciss_eh_abort_handler(struct scsi_cmnd *scsicmd)
{
int rc;
CommandList_struct *cmd_to_abort;
unsigned char lunaddr[8];
ctlr_info_t *h;
/* find the controller to which the command to be aborted was sent */
h = (ctlr_info_t *) scsicmd->device->host->hostdata[0];
if (h == NULL) /* paranoia */
return FAILED;
dev_warn(&h->pdev->dev, "aborting tardy SCSI cmd\n");
/* find the command to be aborted */
cmd_to_abort = (CommandList_struct *) scsicmd->host_scribble;
if (cmd_to_abort == NULL) /* paranoia */
return FAILED;
memcpy(lunaddr, &cmd_to_abort->Header.LUN.LunAddrBytes[0], 8);
rc = sendcmd_withirq(h, CCISS_ABORT_MSG, &cmd_to_abort->Header.Tag,
0, 0, lunaddr, TYPE_MSG);
if (rc == 0)
return SUCCESS;
return FAILED;
}
#else /* no CONFIG_CISS_SCSI_TAPE */
/* If no tape support, then these become defined out of existence */
#define cciss_scsi_setup(cntl_num)
#define cciss_engage_scsi(h)
#endif /* CONFIG_CISS_SCSI_TAPE */
drivers/block/cciss_scsi.h deleted 100644 → 0
View file @ 45f769b2
/*
* Disk Array driver for HP Smart Array controllers, SCSI Tape module.
* (C) Copyright 2001, 2007 Hewlett-Packard Development Company, L.P.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 300, Boston, MA
* 02111-1307, USA.
*
* Questions/Comments/Bugfixes to iss_storagedev@hp.com
*
*/
#ifdef CONFIG_CISS_SCSI_TAPE
#ifndef _CCISS_SCSI_H_
#define _CCISS_SCSI_H_
#include <scsi/scsicam.h> /* possibly irrelevant, since we don't show disks */
/* the scsi id of the adapter... */
#define SELF_SCSI_ID 15
/* 15 is somewhat arbitrary, since the scsi-2 bus
that's presented by the driver to the OS is
fabricated. The "real" scsi-3 bus the
hardware presents is fabricated too.
The actual, honest-to-goodness physical
bus that the devices are attached to is not
addressible natively, and may in fact turn
out to be not scsi at all. */
/*
If the upper scsi layer tries to track how many commands we have
outstanding, it will be operating under the misapprehension that it is
the only one sending us requests. We also have the block interface,
which is where most requests must surely come from, so the upper layer's
notion of how many requests we have outstanding will be wrong most or
all of the time.
Note, the normal SCSI mid-layer error handling doesn't work well
for this driver because 1) it takes the io_request_lock before
calling error handlers and uses a local variable to store flags,
so the io_request_lock cannot be released and interrupts enabled
inside the error handlers, and, the error handlers cannot poll
for command completion because they might get commands from the
block half of the driver completing, and not know what to do
with them. That's what we get for making a hybrid scsi/block
driver, I suppose.
*/
struct cciss_scsi_dev_t {
int devtype;
int bus, target, lun; /* as presented to the OS */
unsigned char scsi3addr[8]; /* as presented to the HW */
unsigned char device_id[16]; /* from inquiry pg. 0x83 */
unsigned char vendor[8]; /* bytes 8-15 of inquiry data */
unsigned char model[16]; /* bytes 16-31 of inquiry data */
unsigned char revision[4]; /* bytes 32-35 of inquiry data */
};
struct cciss_scsi_hba_t {
char *name;
int ndevices;
#define CCISS_MAX_SCSI_DEVS_PER_HBA 16
struct cciss_scsi_dev_t dev[CCISS_MAX_SCSI_DEVS_PER_HBA];
};
#endif /* _CCISS_SCSI_H_ */
#endif /* CONFIG_CISS_SCSI_TAPE */
drivers/scsi/hpsa.c
View file @ 253d2464
......@@ -81,6 +81,7 @@ MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
MODULE_VERSION(HPSA_DRIVER_VERSION);
MODULE_LICENSE("GPL");
MODULE_ALIAS("cciss");
static int hpsa_allow_any;
module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
......
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