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kernel-ark/drivers/block/cciss.c
Mike Miller ad2b93123d [PATCH] cciss per disk queue 
This patch adds per disk queue functionality to cciss.  Sometime back I
submitted a patch but it looks like only part of what I needed.  In the 2.6
kernel if we have more than one logical volume the driver will Oops during
rmmod.  It seems all of the queues actually point back to the same queue.
So after deleting the first volume you hit a null pointer on the second
one.

This has been tested in our labs.  There is no difference in performance,
it just fixes the Oops.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-28 08:39:01 -07:00

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/*
* Disk Array driver for HP SA 5xxx and 6xxx Controllers
* Copyright 2000, 2005 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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, GOOD TITLE or
* NON INFRINGEMENT. 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Questions/Comments/Bugfixes to iss_storagedev@hp.com
*
*/
#include <linux/config.h> /* CONFIG_PROC_FS */
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/bio.h>
#include <linux/blkpg.h>
#include <linux/timer.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/hdreg.h>
#include <linux/spinlock.h>
#include <linux/compat.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/dma-mapping.h>
#include <linux/blkdev.h>
#include <linux/genhd.h>
#include <linux/completion.h>
#define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
#define DRIVER_NAME "HP CISS Driver (v 2.6.6)"
#define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,6)
/* Embedded module documentation macros - see modules.h */
MODULE_AUTHOR("Hewlett-Packard Company");
MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.6");
MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
" SA6i P600 P800 E400 E300");
MODULE_LICENSE("GPL");
#include "cciss_cmd.h"
#include "cciss.h"
#include <linux/cciss_ioctl.h>
/* define the PCI info for the cards we can control */
static const struct pci_device_id cciss_pci_device_id[] = {
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
0x0E11, 0x4070, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
0x0E11, 0x4080, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
0x0E11, 0x4082, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
0x0E11, 0x4083, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
0x0E11, 0x409A, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
0x0E11, 0x409B, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
0x0E11, 0x409C, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
0x0E11, 0x409D, 0, 0, 0},
{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
0x0E11, 0x4091, 0, 0, 0},
{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
0x103C, 0x3225, 0, 0, 0},
{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSB,
0x103c, 0x3223, 0, 0, 0},
{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
0x103c, 0x3231, 0, 0, 0},
{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
0x103c, 0x3233, 0, 0, 0},
{0,}
};
MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
#define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type))
/* board_id = Subsystem Device ID & Vendor ID
* product = Marketing Name for the board
* access = Address of the struct of function pointers
*/
static struct board_type products[] = {
{ 0x40700E11, "Smart Array 5300", &SA5_access },
{ 0x40800E11, "Smart Array 5i", &SA5B_access},
{ 0x40820E11, "Smart Array 532", &SA5B_access},
{ 0x40830E11, "Smart Array 5312", &SA5B_access},
{ 0x409A0E11, "Smart Array 641", &SA5_access},
{ 0x409B0E11, "Smart Array 642", &SA5_access},
{ 0x409C0E11, "Smart Array 6400", &SA5_access},
{ 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
{ 0x40910E11, "Smart Array 6i", &SA5_access},
{ 0x3225103C, "Smart Array P600", &SA5_access},
{ 0x3223103C, "Smart Array P800", &SA5_access},
{ 0x3231103C, "Smart Array E400", &SA5_access},
{ 0x3233103C, "Smart Array E300", &SA5_access},
};
/* How long to wait (in millesconds) for board to go into simple mode */
#define MAX_CONFIG_WAIT 30000
#define MAX_IOCTL_CONFIG_WAIT 1000
/*define how many times we will try a command because of bus resets */
#define MAX_CMD_RETRIES 3
#define READ_AHEAD 1024
#define NR_CMDS 384 /* #commands that can be outstanding */
#define MAX_CTLR 32
/* Originally cciss driver only supports 8 major numbers */
#define MAX_CTLR_ORIG 8
static ctlr_info_t *hba[MAX_CTLR];
static void do_cciss_request(request_queue_t *q);
static int cciss_open(struct inode *inode, struct file *filep);
static int cciss_release(struct inode *inode, struct file *filep);
static int cciss_ioctl(struct inode *inode, struct file *filep,
unsigned int cmd, unsigned long arg);
static int revalidate_allvol(ctlr_info_t *host);
static int cciss_revalidate(struct gendisk *disk);
static int deregister_disk(struct gendisk *disk);
static int register_new_disk(ctlr_info_t *h);
static void cciss_getgeometry(int cntl_num);
static void start_io( ctlr_info_t *h);
static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
unsigned char *scsi3addr, int cmd_type);
#ifdef CONFIG_PROC_FS
static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
int length, int *eof, void *data);
static void cciss_procinit(int i);
#else
static void cciss_procinit(int i) {}
#endif /* CONFIG_PROC_FS */
#ifdef CONFIG_COMPAT
static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
#endif
static struct block_device_operations cciss_fops = {
.owner = THIS_MODULE,
.open = cciss_open,
.release = cciss_release,
.ioctl = cciss_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = cciss_compat_ioctl,
#endif
.revalidate_disk= cciss_revalidate,
};
/*
* Enqueuing and dequeuing functions for cmdlists.
*/
static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
{
if (*Qptr == NULL) {
*Qptr = c;
c->next = c->prev = c;
} else {
c->prev = (*Qptr)->prev;
c->next = (*Qptr);
(*Qptr)->prev->next = c;
(*Qptr)->prev = c;
}
}
static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
CommandList_struct *c)
{
if (c && c->next != c) {
if (*Qptr == c) *Qptr = c->next;
c->prev->next = c->next;
c->next->prev = c->prev;
} else {
*Qptr = NULL;
}
return c;
}
#include "cciss_scsi.c" /* For SCSI tape support */
#ifdef CONFIG_PROC_FS
/*
* Report information about this controller.
*/
#define ENG_GIG 1000000000
#define ENG_GIG_FACTOR (ENG_GIG/512)
#define RAID_UNKNOWN 6
static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
"UNKNOWN"};
static struct proc_dir_entry *proc_cciss;
static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
int length, int *eof, void *data)
{
off_t pos = 0;
off_t len = 0;
int size, i, ctlr;
ctlr_info_t *h = (ctlr_info_t*)data;
drive_info_struct *drv;
unsigned long flags;
sector_t vol_sz, vol_sz_frac;
ctlr = h->ctlr;
/* prevent displaying bogus info during configuration
* or deconfiguration of a logical volume
*/
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
if (h->busy_configuring) {
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
return -EBUSY;
}
h->busy_configuring = 1;
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
size = sprintf(buffer, "%s: HP %s Controller\n"
"Board ID: 0x%08lx\n"
"Firmware Version: %c%c%c%c\n"
"IRQ: %d\n"
"Logical drives: %d\n"
"Current Q depth: %d\n"
"Current # commands on controller: %d\n"
"Max Q depth since init: %d\n"
"Max # commands on controller since init: %d\n"
"Max SG entries since init: %d\n\n",
h->devname,
h->product_name,
(unsigned long)h->board_id,
h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
(unsigned int)h->intr,
h->num_luns,
h->Qdepth, h->commands_outstanding,
h->maxQsinceinit, h->max_outstanding, h->maxSG);
pos += size; len += size;
cciss_proc_tape_report(ctlr, buffer, &pos, &len);
for(i=0; i<=h->highest_lun; i++) {
drv = &h->drv[i];
if (drv->block_size == 0)
continue;
vol_sz = drv->nr_blocks;
vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
vol_sz_frac *= 100;
sector_div(vol_sz_frac, ENG_GIG_FACTOR);
if (drv->raid_level > 5)
drv->raid_level = RAID_UNKNOWN;
size = sprintf(buffer+len, "cciss/c%dd%d:"
"\t%4u.%02uGB\tRAID %s\n",
ctlr, i, (int)vol_sz, (int)vol_sz_frac,
raid_label[drv->raid_level]);
pos += size; len += size;
}
*eof = 1;
*start = buffer+offset;
len -= offset;
if (len>length)
len = length;
h->busy_configuring = 0;
return len;
}
static int
cciss_proc_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
unsigned char cmd[80];
int len;
#ifdef CONFIG_CISS_SCSI_TAPE
ctlr_info_t *h = (ctlr_info_t *) data;
int rc;
#endif
if (count > sizeof(cmd)-1) return -EINVAL;
if (copy_from_user(cmd, buffer, count)) return -EFAULT;
cmd[count] = '\0';
len = strlen(cmd); // above 3 lines ensure safety
if (len && cmd[len-1] == '\n')
cmd[--len] = '\0';
# ifdef CONFIG_CISS_SCSI_TAPE
if (strcmp("engage scsi", cmd)==0) {
rc = cciss_engage_scsi(h->ctlr);
if (rc != 0) return -rc;
return count;
}
/* might be nice to have "disengage" too, but it's not
safely possible. (only 1 module use count, lock issues.) */
# endif
return -EINVAL;
}
/*
* Get us a file in /proc/cciss that says something about each controller.
* Create /proc/cciss if it doesn't exist yet.
*/
static void __devinit cciss_procinit(int i)
{
struct proc_dir_entry *pde;
if (proc_cciss == NULL) {
proc_cciss = proc_mkdir("cciss", proc_root_driver);
if (!proc_cciss)
return;
}
pde = create_proc_read_entry(hba[i]->devname,
S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
proc_cciss, cciss_proc_get_info, hba[i]);
pde->write_proc = cciss_proc_write;
}
#endif /* CONFIG_PROC_FS */
/*
* For operations that cannot sleep, a command block is allocated at init,
* and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
* which ones are free or in use. For operations that can wait for kmalloc
* to possible sleep, this routine can be called with get_from_pool set to 0.
* cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
*/
static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
{
CommandList_struct *c;
int i;
u64bit temp64;
dma_addr_t cmd_dma_handle, err_dma_handle;
if (!get_from_pool)
{
c = (CommandList_struct *) pci_alloc_consistent(
h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
if(c==NULL)
return NULL;
memset(c, 0, sizeof(CommandList_struct));
c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
h->pdev, sizeof(ErrorInfo_struct),
&err_dma_handle);
if (c->err_info == NULL)
{
pci_free_consistent(h->pdev,
sizeof(CommandList_struct), c, cmd_dma_handle);
return NULL;
}
memset(c->err_info, 0, sizeof(ErrorInfo_struct));
} else /* get it out of the controllers pool */
{
do {
i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS);
if (i == NR_CMDS)
return NULL;
} while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
#endif
c = h->cmd_pool + i;
memset(c, 0, sizeof(CommandList_struct));
cmd_dma_handle = h->cmd_pool_dhandle
+ i*sizeof(CommandList_struct);
c->err_info = h->errinfo_pool + i;
memset(c->err_info, 0, sizeof(ErrorInfo_struct));
err_dma_handle = h->errinfo_pool_dhandle
+ i*sizeof(ErrorInfo_struct);
h->nr_allocs++;
}
c->busaddr = (__u32) cmd_dma_handle;
temp64.val = (__u64) err_dma_handle;
c->ErrDesc.Addr.lower = temp64.val32.lower;
c->ErrDesc.Addr.upper = temp64.val32.upper;
c->ErrDesc.Len = sizeof(ErrorInfo_struct);
c->ctlr = h->ctlr;
return c;
}
/*
* Frees a command block that was previously allocated with cmd_alloc().
*/
static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
{
int i;
u64bit temp64;
if( !got_from_pool)
{
temp64.val32.lower = c->ErrDesc.Addr.lower;
temp64.val32.upper = c->ErrDesc.Addr.upper;
pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
c->err_info, (dma_addr_t) temp64.val);
pci_free_consistent(h->pdev, sizeof(CommandList_struct),
c, (dma_addr_t) c->busaddr);
} else
{
i = c - h->cmd_pool;
clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
h->nr_frees++;
}
}
static inline ctlr_info_t *get_host(struct gendisk *disk)
{
return disk->queue->queuedata;
}
static inline drive_info_struct *get_drv(struct gendisk *disk)
{
return disk->private_data;
}
/*
* Open. Make sure the device is really there.
*/
static int cciss_open(struct inode *inode, struct file *filep)
{
ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
#endif /* CCISS_DEBUG */
/*
* Root is allowed to open raw volume zero even if it's not configured
* so array config can still work. Root is also allowed to open any
* volume that has a LUN ID, so it can issue IOCTL to reread the
* disk information. I don't think I really like this
* but I'm already using way to many device nodes to claim another one
* for "raw controller".
*/
if (drv->nr_blocks == 0) {
if (iminor(inode) != 0) { /* not node 0? */
/* if not node 0 make sure it is a partition = 0 */
if (iminor(inode) & 0x0f) {
return -ENXIO;
/* if it is, make sure we have a LUN ID */
} else if (drv->LunID == 0) {
return -ENXIO;
}
}
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
}
drv->usage_count++;
host->usage_count++;
return 0;
}
/*
* Close. Sync first.
*/
static int cciss_release(struct inode *inode, struct file *filep)
{
ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
#endif /* CCISS_DEBUG */
drv->usage_count--;
host->usage_count--;
return 0;
}
#ifdef CONFIG_COMPAT
static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
{
int ret;
lock_kernel();
ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
unlock_kernel();
return ret;
}
static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
{
switch (cmd) {
case CCISS_GETPCIINFO:
case CCISS_GETINTINFO:
case CCISS_SETINTINFO:
case CCISS_GETNODENAME:
case CCISS_SETNODENAME:
case CCISS_GETHEARTBEAT:
case CCISS_GETBUSTYPES:
case CCISS_GETFIRMVER:
case CCISS_GETDRIVVER:
case CCISS_REVALIDVOLS:
case CCISS_DEREGDISK:
case CCISS_REGNEWDISK:
case CCISS_REGNEWD:
case CCISS_RESCANDISK:
case CCISS_GETLUNINFO:
return do_ioctl(f, cmd, arg);
case CCISS_PASSTHRU32:
return cciss_ioctl32_passthru(f, cmd, arg);
case CCISS_BIG_PASSTHRU32:
return cciss_ioctl32_big_passthru(f, cmd, arg);
default:
return -ENOIOCTLCMD;
}
}
static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
{
IOCTL32_Command_struct __user *arg32 =
(IOCTL32_Command_struct __user *) arg;
IOCTL_Command_struct arg64;
IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
int err;
u32 cp;
err = 0;
err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
err |= get_user(arg64.buf_size, &arg32->buf_size);
err |= get_user(cp, &arg32->buf);
arg64.buf = compat_ptr(cp);
err |= copy_to_user(p, &arg64, sizeof(arg64));
if (err)
return -EFAULT;
err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
if (err)
return err;
err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
if (err)
return -EFAULT;
return err;
}
static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
{
BIG_IOCTL32_Command_struct __user *arg32 =
(BIG_IOCTL32_Command_struct __user *) arg;
BIG_IOCTL_Command_struct arg64;
BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
int err;
u32 cp;
err = 0;
err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
err |= get_user(arg64.buf_size, &arg32->buf_size);
err |= get_user(arg64.malloc_size, &arg32->malloc_size);
err |= get_user(cp, &arg32->buf);
arg64.buf = compat_ptr(cp);
err |= copy_to_user(p, &arg64, sizeof(arg64));
if (err)
return -EFAULT;
err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
if (err)
return err;
err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
if (err)
return -EFAULT;
return err;
}
#endif
/*
* ioctl
*/
static int cciss_ioctl(struct inode *inode, struct file *filep,
unsigned int cmd, unsigned long arg)
{
struct block_device *bdev = inode->i_bdev;
struct gendisk *disk = bdev->bd_disk;
ctlr_info_t *host = get_host(disk);
drive_info_struct *drv = get_drv(disk);
int ctlr = host->ctlr;
void __user *argp = (void __user *)arg;
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
#endif /* CCISS_DEBUG */
switch(cmd) {
case HDIO_GETGEO:
{
struct hd_geometry driver_geo;
if (drv->cylinders) {
driver_geo.heads = drv->heads;
driver_geo.sectors = drv->sectors;
driver_geo.cylinders = drv->cylinders;
} else
return -ENXIO;
driver_geo.start= get_start_sect(inode->i_bdev);
if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry)))
return -EFAULT;
return(0);
}
case CCISS_GETPCIINFO:
{
cciss_pci_info_struct pciinfo;
if (!arg) return -EINVAL;
pciinfo.domain = pci_domain_nr(host->pdev->bus);
pciinfo.bus = host->pdev->bus->number;
pciinfo.dev_fn = host->pdev->devfn;
pciinfo.board_id = host->board_id;
if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
return -EFAULT;
return(0);
}
case CCISS_GETINTINFO:
{
cciss_coalint_struct intinfo;
if (!arg) return -EINVAL;
intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
return -EFAULT;
return(0);
}
case CCISS_SETINTINFO:
{
cciss_coalint_struct intinfo;
unsigned long flags;
int i;
if (!arg) return -EINVAL;
if (!capable(CAP_SYS_ADMIN)) return -EPERM;
if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
return -EFAULT;
if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
{
// printk("cciss_ioctl: delay and count cannot be 0\n");
return( -EINVAL);
}
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
/* Update the field, and then ring the doorbell */
writel( intinfo.delay,
&(host->cfgtable->HostWrite.CoalIntDelay));
writel( intinfo.count,
&(host->cfgtable->HostWrite.CoalIntCount));
writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
if (!(readl(host->vaddr + SA5_DOORBELL)
& CFGTBL_ChangeReq))
break;
/* delay and try again */
udelay(1000);
}
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
if (i >= MAX_IOCTL_CONFIG_WAIT)
return -EAGAIN;
return(0);
}
case CCISS_GETNODENAME:
{
NodeName_type NodeName;
int i;
if (!arg) return -EINVAL;
for(i=0;i<16;i++)
NodeName[i] = readb(&host->cfgtable->ServerName[i]);
if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
return -EFAULT;
return(0);
}
case CCISS_SETNODENAME:
{
NodeName_type NodeName;
unsigned long flags;
int i;
if (!arg) return -EINVAL;
if (!capable(CAP_SYS_ADMIN)) return -EPERM;
if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
return -EFAULT;
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
/* Update the field, and then ring the doorbell */
for(i=0;i<16;i++)
writeb( NodeName[i], &host->cfgtable->ServerName[i]);
writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
if (!(readl(host->vaddr + SA5_DOORBELL)
& CFGTBL_ChangeReq))
break;
/* delay and try again */
udelay(1000);
}
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
if (i >= MAX_IOCTL_CONFIG_WAIT)
return -EAGAIN;
return(0);
}
case CCISS_GETHEARTBEAT:
{
Heartbeat_type heartbeat;
if (!arg) return -EINVAL;
heartbeat = readl(&host->cfgtable->HeartBeat);
if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
return -EFAULT;
return(0);
}
case CCISS_GETBUSTYPES:
{
BusTypes_type BusTypes;
if (!arg) return -EINVAL;
BusTypes = readl(&host->cfgtable->BusTypes);
if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
return -EFAULT;
return(0);
}
case CCISS_GETFIRMVER:
{
FirmwareVer_type firmware;
if (!arg) return -EINVAL;
memcpy(firmware, host->firm_ver, 4);
if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
return -EFAULT;
return(0);
}
case CCISS_GETDRIVVER:
{
DriverVer_type DriverVer = DRIVER_VERSION;
if (!arg) return -EINVAL;
if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
return -EFAULT;
return(0);
}
case CCISS_REVALIDVOLS:
if (bdev != bdev->bd_contains || drv != host->drv)
return -ENXIO;
return revalidate_allvol(host);
case CCISS_GETLUNINFO: {
LogvolInfo_struct luninfo;
luninfo.LunID = drv->LunID;
luninfo.num_opens = drv->usage_count;
luninfo.num_parts = 0;
if (copy_to_user(argp, &luninfo,
sizeof(LogvolInfo_struct)))
return -EFAULT;
return(0);
}
case CCISS_DEREGDISK:
return deregister_disk(disk);
case CCISS_REGNEWD:
return register_new_disk(host);
case CCISS_PASSTHRU:
{
IOCTL_Command_struct iocommand;
CommandList_struct *c;
char *buff = NULL;
u64bit temp64;
unsigned long flags;
DECLARE_COMPLETION(wait);
if (!arg) return -EINVAL;
if (!capable(CAP_SYS_RAWIO)) return -EPERM;
if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
return -EFAULT;
if((iocommand.buf_size < 1) &&
(iocommand.Request.Type.Direction != XFER_NONE))
{
return -EINVAL;
}
#if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
/* Check kmalloc limits */
if(iocommand.buf_size > 128000)
return -EINVAL;
#endif
if(iocommand.buf_size > 0)
{
buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
if( buff == NULL)
return -EFAULT;
}
if (iocommand.Request.Type.Direction == XFER_WRITE)
{
/* Copy the data into the buffer we created */
if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
{
kfree(buff);
return -EFAULT;
}
} else {
memset(buff, 0, iocommand.buf_size);
}
if ((c = cmd_alloc(host , 0)) == NULL)
{
kfree(buff);
return -ENOMEM;
}
// Fill in the command type
c->cmd_type = CMD_IOCTL_PEND;
// Fill in Command Header
c->Header.ReplyQueue = 0; // unused in simple mode
if( iocommand.buf_size > 0) // buffer to fill
{
c->Header.SGList = 1;
c->Header.SGTotal= 1;
} else // no buffers to fill
{
c->Header.SGList = 0;
c->Header.SGTotal= 0;
}
c->Header.LUN = iocommand.LUN_info;
c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
// Fill in Request block
c->Request = iocommand.Request;
// Fill in the scatter gather information
if (iocommand.buf_size > 0 )
{
temp64.val = pci_map_single( host->pdev, buff,
iocommand.buf_size,
PCI_DMA_BIDIRECTIONAL);
c->SG[0].Addr.lower = temp64.val32.lower;
c->SG[0].Addr.upper = temp64.val32.upper;
c->SG[0].Len = iocommand.buf_size;
c->SG[0].Ext = 0; // we are not chaining
}
c->waiting = &wait;
/* Put the request on the tail of the request queue */
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
addQ(&host->reqQ, c);
host->Qdepth++;
start_io(host);
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
wait_for_completion(&wait);
/* unlock the buffers from DMA */
temp64.val32.lower = c->SG[0].Addr.lower;
temp64.val32.upper = c->SG[0].Addr.upper;
pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
/* Copy the error information out */
iocommand.error_info = *(c->err_info);
if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
{
kfree(buff);
cmd_free(host, c, 0);
return( -EFAULT);
}
if (iocommand.Request.Type.Direction == XFER_READ)
{
/* Copy the data out of the buffer we created */
if (copy_to_user(iocommand.buf, buff, iocommand.buf_size))
{
kfree(buff);
cmd_free(host, c, 0);
return -EFAULT;
}
}
kfree(buff);
cmd_free(host, c, 0);
return(0);
}
case CCISS_BIG_PASSTHRU: {
BIG_IOCTL_Command_struct *ioc;
CommandList_struct *c;
unsigned char **buff = NULL;
int *buff_size = NULL;
u64bit temp64;
unsigned long flags;
BYTE sg_used = 0;
int status = 0;
int i;
DECLARE_COMPLETION(wait);
__u32 left;
__u32 sz;
BYTE __user *data_ptr;
if (!arg)
return -EINVAL;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
ioc = (BIG_IOCTL_Command_struct *)
kmalloc(sizeof(*ioc), GFP_KERNEL);
if (!ioc) {
status = -ENOMEM;
goto cleanup1;
}
if (copy_from_user(ioc, argp, sizeof(*ioc))) {
status = -EFAULT;
goto cleanup1;
}
if ((ioc->buf_size < 1) &&
(ioc->Request.Type.Direction != XFER_NONE)) {
status = -EINVAL;
goto cleanup1;
}
/* Check kmalloc limits using all SGs */
if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
status = -EINVAL;
goto cleanup1;
}
if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
status = -EINVAL;
goto cleanup1;
}
buff = (unsigned char **) kmalloc(MAXSGENTRIES *
sizeof(char *), GFP_KERNEL);
if (!buff) {
status = -ENOMEM;
goto cleanup1;
}
memset(buff, 0, MAXSGENTRIES);
buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
GFP_KERNEL);
if (!buff_size) {
status = -ENOMEM;
goto cleanup1;
}
left = ioc->buf_size;
data_ptr = ioc->buf;
while (left) {
sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
buff_size[sg_used] = sz;
buff[sg_used] = kmalloc(sz, GFP_KERNEL);
if (buff[sg_used] == NULL) {
status = -ENOMEM;
goto cleanup1;
}
if (ioc->Request.Type.Direction == XFER_WRITE &&
copy_from_user(buff[sg_used], data_ptr, sz)) {
status = -ENOMEM;
goto cleanup1;
} else {
memset(buff[sg_used], 0, sz);
}
left -= sz;
data_ptr += sz;
sg_used++;
}
if ((c = cmd_alloc(host , 0)) == NULL) {
status = -ENOMEM;
goto cleanup1;
}
c->cmd_type = CMD_IOCTL_PEND;
c->Header.ReplyQueue = 0;
if( ioc->buf_size > 0) {
c->Header.SGList = sg_used;
c->Header.SGTotal= sg_used;
} else {
c->Header.SGList = 0;
c->Header.SGTotal= 0;
}
c->Header.LUN = ioc->LUN_info;
c->Header.Tag.lower = c->busaddr;
c->Request = ioc->Request;
if (ioc->buf_size > 0 ) {
int i;
for(i=0; i<sg_used; i++) {
temp64.val = pci_map_single( host->pdev, buff[i],
buff_size[i],
PCI_DMA_BIDIRECTIONAL);
c->SG[i].Addr.lower = temp64.val32.lower;
c->SG[i].Addr.upper = temp64.val32.upper;
c->SG[i].Len = buff_size[i];
c->SG[i].Ext = 0; /* we are not chaining */
}
}
c->waiting = &wait;
/* Put the request on the tail of the request queue */
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
addQ(&host->reqQ, c);
host->Qdepth++;
start_io(host);
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
wait_for_completion(&wait);
/* unlock the buffers from DMA */
for(i=0; i<sg_used; i++) {
temp64.val32.lower = c->SG[i].Addr.lower;
temp64.val32.upper = c->SG[i].Addr.upper;
pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
buff_size[i], PCI_DMA_BIDIRECTIONAL);
}
/* Copy the error information out */
ioc->error_info = *(c->err_info);
if (copy_to_user(argp, ioc, sizeof(*ioc))) {
cmd_free(host, c, 0);
status = -EFAULT;
goto cleanup1;
}
if (ioc->Request.Type.Direction == XFER_READ) {
/* Copy the data out of the buffer we created */
BYTE __user *ptr = ioc->buf;
for(i=0; i< sg_used; i++) {
if (copy_to_user(ptr, buff[i], buff_size[i])) {
cmd_free(host, c, 0);
status = -EFAULT;
goto cleanup1;
}
ptr += buff_size[i];
}
}
cmd_free(host, c, 0);
status = 0;
cleanup1:
if (buff) {
for(i=0; i<sg_used; i++)
if(buff[i] != NULL)
kfree(buff[i]);
kfree(buff);
}
if (buff_size)
kfree(buff_size);
if (ioc)
kfree(ioc);
return(status);
}
default:
return -ENOTTY;
}
}
/*
* revalidate_allvol is for online array config utilities. After a
* utility reconfigures the drives in the array, it can use this function
* (through an ioctl) to make the driver zap any previous disk structs for
* that controller and get new ones.
*
* Right now I'm using the getgeometry() function to do this, but this
* function should probably be finer grained and allow you to revalidate one
* particualar logical volume (instead of all of them on a particular
* controller).
*/
static int revalidate_allvol(ctlr_info_t *host)
{
int ctlr = host->ctlr, i;
unsigned long flags;
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
if (host->usage_count > 1) {
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
printk(KERN_WARNING "cciss: Device busy for volume"
" revalidation (usage=%d)\n", host->usage_count);
return -EBUSY;
}
host->usage_count++;
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
for(i=0; i< NWD; i++) {
struct gendisk *disk = host->gendisk[i];
if (disk->flags & GENHD_FL_UP)
del_gendisk(disk);
}
/*
* Set the partition and block size structures for all volumes
* on this controller to zero. We will reread all of this data
*/
memset(host->drv, 0, sizeof(drive_info_struct)
* CISS_MAX_LUN);
/*
* Tell the array controller not to give us any interrupts while
* we check the new geometry. Then turn interrupts back on when
* we're done.
*/
host->access.set_intr_mask(host, CCISS_INTR_OFF);
cciss_getgeometry(ctlr);
host->access.set_intr_mask(host, CCISS_INTR_ON);
/* Loop through each real device */
for (i = 0; i < NWD; i++) {
struct gendisk *disk = host->gendisk[i];
drive_info_struct *drv = &(host->drv[i]);
/* we must register the controller even if no disks exist */
/* this is for the online array utilities */
if (!drv->heads && i)
continue;
blk_queue_hardsect_size(drv->queue, drv->block_size);
set_capacity(disk, drv->nr_blocks);
add_disk(disk);
}
host->usage_count--;
return 0;
}
static int deregister_disk(struct gendisk *disk)
{
unsigned long flags;
ctlr_info_t *h = get_host(disk);
drive_info_struct *drv = get_drv(disk);
int ctlr = h->ctlr;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
/* make sure logical volume is NOT is use */
if( drv->usage_count > 1) {
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
return -EBUSY;
}
drv->usage_count++;
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
/* invalidate the devices and deregister the disk */
if (disk->flags & GENHD_FL_UP)
del_gendisk(disk);
/* check to see if it was the last disk */
if (drv == h->drv + h->highest_lun) {
/* if so, find the new hightest lun */
int i, newhighest =-1;
for(i=0; i<h->highest_lun; i++) {
/* if the disk has size > 0, it is available */
if (h->drv[i].nr_blocks)
newhighest = i;
}
h->highest_lun = newhighest;
}
--h->num_luns;
/* zero out the disk size info */
drv->nr_blocks = 0;
drv->block_size = 0;
drv->cylinders = 0;
drv->LunID = 0;
return(0);
}
static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
size_t size,
unsigned int use_unit_num, /* 0: address the controller,
1: address logical volume log_unit,
2: periph device address is scsi3addr */
unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
int cmd_type)
{
ctlr_info_t *h= hba[ctlr];
u64bit buff_dma_handle;
int status = IO_OK;
c->cmd_type = CMD_IOCTL_PEND;
c->Header.ReplyQueue = 0;
if( buff != NULL) {
c->Header.SGList = 1;
c->Header.SGTotal= 1;
} else {
c->Header.SGList = 0;
c->Header.SGTotal= 0;
}
c->Header.Tag.lower = c->busaddr;
c->Request.Type.Type = cmd_type;
if (cmd_type == TYPE_CMD) {
switch(cmd) {
case CISS_INQUIRY:
/* If the logical unit number is 0 then, this is going
to controller so It's a physical command
mode = 0 target = 0. So we have nothing to write.
otherwise, if use_unit_num == 1,
mode = 1(volume set addressing) target = LUNID
otherwise, if use_unit_num == 2,
mode = 0(periph dev addr) target = scsi3addr */
if (use_unit_num == 1) {
c->Header.LUN.LogDev.VolId=
h->drv[log_unit].LunID;
c->Header.LUN.LogDev.Mode = 1;
} else if (use_unit_num == 2) {
memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
c->Header.LUN.LogDev.Mode = 0;
}
/* are we trying to read a vital product page */
if(page_code != 0) {
c->Request.CDB[1] = 0x01;
c->Request.CDB[2] = page_code;
}
c->Request.CDBLen = 6;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.Timeout = 0;
c->Request.CDB[0] = CISS_INQUIRY;
c->Request.CDB[4] = size & 0xFF;
break;
case CISS_REPORT_LOG:
case CISS_REPORT_PHYS:
/* Talking to controller so It's a physical command
mode = 00 target = 0. Nothing to write.
*/
c->Request.CDBLen = 12;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.Timeout = 0;
c->Request.CDB[0] = cmd;
c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
c->Request.CDB[7] = (size >> 16) & 0xFF;
c->Request.CDB[8] = (size >> 8) & 0xFF;
c->Request.CDB[9] = size & 0xFF;
break;
case CCISS_READ_CAPACITY:
c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
c->Header.LUN.LogDev.Mode = 1;
c->Request.CDBLen = 10;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.Timeout = 0;
c->Request.CDB[0] = cmd;
break;
case CCISS_CACHE_FLUSH:
c->Request.CDBLen = 12;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_WRITE;
c->Request.Timeout = 0;
c->Request.CDB[0] = BMIC_WRITE;
c->Request.CDB[6] = BMIC_CACHE_FLUSH;
break;
default:
printk(KERN_WARNING
"cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
return(IO_ERROR);
}
} else if (cmd_type == TYPE_MSG) {
switch (cmd) {
case 3: /* No-Op message */
c->Request.CDBLen = 1;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_WRITE;
c->Request.Timeout = 0;
c->Request.CDB[0] = cmd;
break;
default:
printk(KERN_WARNING
"cciss%d: unknown message type %d\n",
ctlr, cmd);
return IO_ERROR;
}
} else {
printk(KERN_WARNING
"cciss%d: unknown command type %d\n", ctlr, cmd_type);
return IO_ERROR;
}
/* Fill in the scatter gather information */
if (size > 0) {
buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
buff, size, PCI_DMA_BIDIRECTIONAL);
c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
c->SG[0].Len = size;
c->SG[0].Ext = 0; /* we are not chaining */
}
return status;
}
static int sendcmd_withirq(__u8 cmd,
int ctlr,
void *buff,
size_t size,
unsigned int use_unit_num,
unsigned int log_unit,
__u8 page_code,
int cmd_type)
{
ctlr_info_t *h = hba[ctlr];
CommandList_struct *c;
u64bit buff_dma_handle;
unsigned long flags;
int return_status;
DECLARE_COMPLETION(wait);
if ((c = cmd_alloc(h , 0)) == NULL)
return -ENOMEM;
return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
log_unit, page_code, NULL, cmd_type);
if (return_status != IO_OK) {
cmd_free(h, c, 0);
return return_status;
}
resend_cmd2:
c->waiting = &wait;
/* Put the request on the tail of the queue and send it */
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
addQ(&h->reqQ, c);
h->Qdepth++;
start_io(h);
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
wait_for_completion(&wait);
if(c->err_info->CommandStatus != 0)
{ /* an error has occurred */
switch(c->err_info->CommandStatus)
{
case CMD_TARGET_STATUS:
printk(KERN_WARNING "cciss: cmd %p has "
" completed with errors\n", c);
if( c->err_info->ScsiStatus)
{
printk(KERN_WARNING "cciss: cmd %p "
"has SCSI Status = %x\n",
c,
c->err_info->ScsiStatus);
}
break;
case CMD_DATA_UNDERRUN:
case CMD_DATA_OVERRUN:
/* expected for inquire and report lun commands */
break;
case CMD_INVALID:
printk(KERN_WARNING "cciss: Cmd %p is "
"reported invalid\n", c);
return_status = IO_ERROR;
break;
case CMD_PROTOCOL_ERR:
printk(KERN_WARNING "cciss: cmd %p has "
"protocol error \n", c);
return_status = IO_ERROR;
break;
case CMD_HARDWARE_ERR:
printk(KERN_WARNING "cciss: cmd %p had "
" hardware error\n", c);
return_status = IO_ERROR;
break;
case CMD_CONNECTION_LOST:
printk(KERN_WARNING "cciss: cmd %p had "
"connection lost\n", c);
return_status = IO_ERROR;
break;
case CMD_ABORTED:
printk(KERN_WARNING "cciss: cmd %p was "
"aborted\n", c);
return_status = IO_ERROR;
break;
case CMD_ABORT_FAILED:
printk(KERN_WARNING "cciss: cmd %p reports "
"abort failed\n", c);
return_status = IO_ERROR;
break;
case CMD_UNSOLICITED_ABORT:
printk(KERN_WARNING
"cciss%d: unsolicited abort %p\n",
ctlr, c);
if (c->retry_count < MAX_CMD_RETRIES) {
printk(KERN_WARNING
"cciss%d: retrying %p\n",
ctlr, c);
c->retry_count++;
/* erase the old error information */
memset(c->err_info, 0,
sizeof(ErrorInfo_struct));
return_status = IO_OK;
INIT_COMPLETION(wait);
goto resend_cmd2;
}
return_status = IO_ERROR;
break;
default:
printk(KERN_WARNING "cciss: cmd %p returned "
"unknown status %x\n", c,
c->err_info->CommandStatus);
return_status = IO_ERROR;
}
}
/* unlock the buffers from DMA */
pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
size, PCI_DMA_BIDIRECTIONAL);
cmd_free(h, c, 0);
return(return_status);
}
static void cciss_geometry_inquiry(int ctlr, int logvol,
int withirq, unsigned int total_size,
unsigned int block_size, InquiryData_struct *inq_buff,
drive_info_struct *drv)
{
int return_code;
memset(inq_buff, 0, sizeof(InquiryData_struct));
if (withirq)
return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
else
return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
if (return_code == IO_OK) {
if(inq_buff->data_byte[8] == 0xFF) {
printk(KERN_WARNING
"cciss: reading geometry failed, volume "
"does not support reading geometry\n");
drv->block_size = block_size;
drv->nr_blocks = total_size;
drv->heads = 255;
drv->sectors = 32; // Sectors per track
drv->cylinders = total_size / 255 / 32;
} else {
unsigned int t;
drv->block_size = block_size;
drv->nr_blocks = total_size;
drv->heads = inq_buff->data_byte[6];
drv->sectors = inq_buff->data_byte[7];
drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
drv->cylinders += inq_buff->data_byte[5];
drv->raid_level = inq_buff->data_byte[8];
t = drv->heads * drv->sectors;
if (t > 1) {
drv->cylinders = total_size/t;
}
}
} else { /* Get geometry failed */
printk(KERN_WARNING "cciss: reading geometry failed\n");
}
printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
drv->heads, drv->sectors, drv->cylinders);
}
static void
cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
int withirq, unsigned int *total_size, unsigned int *block_size)
{
int return_code;
memset(buf, 0, sizeof(*buf));
if (withirq)
return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
else
return_code = sendcmd(CCISS_READ_CAPACITY,
ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
if (return_code == IO_OK) {
*total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
*block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
} else { /* read capacity command failed */
printk(KERN_WARNING "cciss: read capacity failed\n");
*total_size = 0;
*block_size = BLOCK_SIZE;
}
printk(KERN_INFO " blocks= %u block_size= %d\n",
*total_size, *block_size);
return;
}
static int register_new_disk(ctlr_info_t *h)
{
struct gendisk *disk;
int ctlr = h->ctlr;
int i;
int num_luns;
int logvol;
int new_lun_found = 0;
int new_lun_index = 0;
int free_index_found = 0;
int free_index = 0;
ReportLunData_struct *ld_buff = NULL;
ReadCapdata_struct *size_buff = NULL;
InquiryData_struct *inq_buff = NULL;
int return_code;
int listlength = 0;
__u32 lunid = 0;
unsigned int block_size;
unsigned int total_size;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
/* if we have no space in our disk array left to add anything */
if( h->num_luns >= CISS_MAX_LUN)
return -EINVAL;
ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
if (ld_buff == NULL)
goto mem_msg;
memset(ld_buff, 0, sizeof(ReportLunData_struct));
size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
if (size_buff == NULL)
goto mem_msg;
inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
if (inq_buff == NULL)
goto mem_msg;
return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);
if( return_code == IO_OK)
{
// printk("LUN Data\n--------------------------\n");
listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
} else /* reading number of logical volumes failed */
{
printk(KERN_WARNING "cciss: report logical volume"
" command failed\n");
listlength = 0;
goto free_err;
}
num_luns = listlength / 8; // 8 bytes pre entry
if (num_luns > CISS_MAX_LUN)
{
num_luns = CISS_MAX_LUN;
}
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
ld_buff->LUNListLength[3], num_luns);
#endif
for(i=0; i< num_luns; i++)
{
int j;
int lunID_found = 0;
lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
/* check to see if this is a new lun */
for(j=0; j <= h->highest_lun; j++)
{
#ifdef CCISS_DEBUG
printk("Checking %d %x against %x\n", j,h->drv[j].LunID,
lunid);
#endif /* CCISS_DEBUG */
if (h->drv[j].LunID == lunid)
{
lunID_found = 1;
break;
}
}
if( lunID_found == 1)
continue;
else
{ /* It is the new lun we have been looking for */
#ifdef CCISS_DEBUG
printk("new lun found at %d\n", i);
#endif /* CCISS_DEBUG */
new_lun_index = i;
new_lun_found = 1;
break;
}
}
if (!new_lun_found)
{
printk(KERN_WARNING "cciss: New Logical Volume not found\n");
goto free_err;
}
/* Now find the free index */
for(i=0; i <CISS_MAX_LUN; i++)
{
#ifdef CCISS_DEBUG
printk("Checking Index %d\n", i);
#endif /* CCISS_DEBUG */
if(h->drv[i].LunID == 0)
{
#ifdef CCISS_DEBUG
printk("free index found at %d\n", i);
#endif /* CCISS_DEBUG */
free_index_found = 1;
free_index = i;
break;
}
}
if (!free_index_found)
{
printk(KERN_WARNING "cciss: unable to find free slot for disk\n");
goto free_err;
}
logvol = free_index;
h->drv[logvol].LunID = lunid;
/* there could be gaps in lun numbers, track hightest */
if(h->highest_lun < lunid)
h->highest_lun = logvol;
cciss_read_capacity(ctlr, logvol, size_buff, 1,
&total_size, &block_size);
cciss_geometry_inquiry(ctlr, logvol, 1, total_size, block_size,
inq_buff, &h->drv[logvol]);
h->drv[logvol].usage_count = 0;
++h->num_luns;
/* setup partitions per disk */
disk = h->gendisk[logvol];
set_capacity(disk, h->drv[logvol].nr_blocks);
/* if it's the controller it's already added */
if(logvol)
add_disk(disk);
freeret:
kfree(ld_buff);
kfree(size_buff);
kfree(inq_buff);
return (logvol);
mem_msg:
printk(KERN_ERR "cciss: out of memory\n");
free_err:
logvol = -1;
goto freeret;
}
static int cciss_revalidate(struct gendisk *disk)
{
ctlr_info_t *h = get_host(disk);
drive_info_struct *drv = get_drv(disk);
int logvol;
int FOUND=0;
unsigned int block_size;
unsigned int total_size;
ReadCapdata_struct *size_buff = NULL;
InquiryData_struct *inq_buff = NULL;
for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
{
if(h->drv[logvol].LunID == drv->LunID) {
FOUND=1;
break;
}
}
if (!FOUND) return 1;
size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
if (size_buff == NULL)
{
printk(KERN_WARNING "cciss: out of memory\n");
return 1;
}
inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
if (inq_buff == NULL)
{
printk(KERN_WARNING "cciss: out of memory\n");
kfree(size_buff);
return 1;
}
cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
blk_queue_hardsect_size(drv->queue, drv->block_size);
set_capacity(disk, drv->nr_blocks);
kfree(size_buff);
kfree(inq_buff);
return 0;
}
/*
* Wait polling for a command to complete.
* The memory mapped FIFO is polled for the completion.
* Used only at init time, interrupts from the HBA are disabled.
*/
static unsigned long pollcomplete(int ctlr)
{
unsigned long done;
int i;
/* Wait (up to 20 seconds) for a command to complete */
for (i = 20 * HZ; i > 0; i--) {
done = hba[ctlr]->access.command_completed(hba[ctlr]);
if (done == FIFO_EMPTY) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
} else
return (done);
}
/* Invalid address to tell caller we ran out of time */
return 1;
}
/*
* Send a command to the controller, and wait for it to complete.
* Only used at init time.
*/
static int sendcmd(
__u8 cmd,
int ctlr,
void *buff,
size_t size,
unsigned int use_unit_num, /* 0: address the controller,
1: address logical volume log_unit,
2: periph device address is scsi3addr */
unsigned int log_unit,
__u8 page_code,
unsigned char *scsi3addr,
int cmd_type)
{
CommandList_struct *c;
int i;
unsigned long complete;
ctlr_info_t *info_p= hba[ctlr];
u64bit buff_dma_handle;
int status;
if ((c = cmd_alloc(info_p, 1)) == NULL) {
printk(KERN_WARNING "cciss: unable to get memory");
return(IO_ERROR);
}
status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
log_unit, page_code, scsi3addr, cmd_type);
if (status != IO_OK) {
cmd_free(info_p, c, 1);
return status;
}
resend_cmd1:
/*
* Disable interrupt
*/
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss: turning intr off\n");
#endif /* CCISS_DEBUG */
info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
/* Make sure there is room in the command FIFO */
/* Actually it should be completely empty at this time. */
for (i = 200000; i > 0; i--)
{
/* if fifo isn't full go */
if (!(info_p->access.fifo_full(info_p)))
{
break;
}
udelay(10);
printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
" waiting!\n", ctlr);
}
/*
* Send the cmd
*/
info_p->access.submit_command(info_p, c);
complete = pollcomplete(ctlr);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss: command completed\n");
#endif /* CCISS_DEBUG */
if (complete != 1) {
if ( (complete & CISS_ERROR_BIT)
&& (complete & ~CISS_ERROR_BIT) == c->busaddr)
{
/* if data overrun or underun on Report command
ignore it
*/
if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
(c->Request.CDB[0] == CISS_REPORT_PHYS) ||
(c->Request.CDB[0] == CISS_INQUIRY)) &&
((c->err_info->CommandStatus ==
CMD_DATA_OVERRUN) ||
(c->err_info->CommandStatus ==
CMD_DATA_UNDERRUN)
))
{
complete = c->busaddr;
} else {
if (c->err_info->CommandStatus ==
CMD_UNSOLICITED_ABORT) {
printk(KERN_WARNING "cciss%d: "
"unsolicited abort %p\n",
ctlr, c);
if (c->retry_count < MAX_CMD_RETRIES) {
printk(KERN_WARNING
"cciss%d: retrying %p\n",
ctlr, c);
c->retry_count++;
/* erase the old error */
/* information */
memset(c->err_info, 0,
sizeof(ErrorInfo_struct));
goto resend_cmd1;
} else {
printk(KERN_WARNING
"cciss%d: retried %p too "
"many times\n", ctlr, c);
status = IO_ERROR;
goto cleanup1;
}
}
printk(KERN_WARNING "ciss ciss%d: sendcmd"
" Error %x \n", ctlr,
c->err_info->CommandStatus);
printk(KERN_WARNING "ciss ciss%d: sendcmd"
" offensive info\n"
" size %x\n num %x value %x\n", ctlr,
c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
status = IO_ERROR;
goto cleanup1;
}
}
if (complete != c->busaddr) {
printk( KERN_WARNING "cciss cciss%d: SendCmd "
"Invalid command list address returned! (%lx)\n",
ctlr, complete);
status = IO_ERROR;
goto cleanup1;
}
} else {
printk( KERN_WARNING
"cciss cciss%d: SendCmd Timeout out, "
"No command list address returned!\n",
ctlr);
status = IO_ERROR;
}
cleanup1:
/* unlock the data buffer from DMA */
pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
size, PCI_DMA_BIDIRECTIONAL);
cmd_free(info_p, c, 1);
return (status);
}
/*
* Map (physical) PCI mem into (virtual) kernel space
*/
static void __iomem *remap_pci_mem(ulong base, ulong size)
{
ulong page_base = ((ulong) base) & PAGE_MASK;
ulong page_offs = ((ulong) base) - page_base;
void __iomem *page_remapped = ioremap(page_base, page_offs+size);
return page_remapped ? (page_remapped + page_offs) : NULL;
}
/*
* Takes jobs of the Q and sends them to the hardware, then puts it on
* the Q to wait for completion.
*/
static void start_io( ctlr_info_t *h)
{
CommandList_struct *c;
while(( c = h->reqQ) != NULL )
{
/* can't do anything if fifo is full */
if ((h->access.fifo_full(h))) {
printk(KERN_WARNING "cciss: fifo full\n");
break;
}
/* Get the frist entry from the Request Q */
removeQ(&(h->reqQ), c);
h->Qdepth--;
/* Tell the controller execute command */
h->access.submit_command(h, c);
/* Put job onto the completed Q */
addQ (&(h->cmpQ), c);
}
}
static inline void complete_buffers(struct bio *bio, int status)
{
while (bio) {
struct bio *xbh = bio->bi_next;
int nr_sectors = bio_sectors(bio);
bio->bi_next = NULL;
blk_finished_io(len);
bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
bio = xbh;
}
}
/* Assumes that CCISS_LOCK(h->ctlr) is held. */
/* Zeros out the error record and then resends the command back */
/* to the controller */
static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
{
/* erase the old error information */
memset(c->err_info, 0, sizeof(ErrorInfo_struct));
/* add it to software queue and then send it to the controller */
addQ(&(h->reqQ),c);
h->Qdepth++;
if(h->Qdepth > h->maxQsinceinit)
h->maxQsinceinit = h->Qdepth;
start_io(h);
}
/* checks the status of the job and calls complete buffers to mark all
* buffers for the completed job.
*/
static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
int timeout)
{
int status = 1;
int i;
int retry_cmd = 0;
u64bit temp64;
if (timeout)
status = 0;
if(cmd->err_info->CommandStatus != 0)
{ /* an error has occurred */
switch(cmd->err_info->CommandStatus)
{
unsigned char sense_key;
case CMD_TARGET_STATUS:
status = 0;
if( cmd->err_info->ScsiStatus == 0x02)
{
printk(KERN_WARNING "cciss: cmd %p "
"has CHECK CONDITION "
" byte 2 = 0x%x\n", cmd,
cmd->err_info->SenseInfo[2]
);
/* check the sense key */
sense_key = 0xf &
cmd->err_info->SenseInfo[2];
/* no status or recovered error */
if((sense_key == 0x0) ||
(sense_key == 0x1))
{
status = 1;
}
} else
{
printk(KERN_WARNING "cciss: cmd %p "
"has SCSI Status 0x%x\n",
cmd, cmd->err_info->ScsiStatus);
}
break;
case CMD_DATA_UNDERRUN:
printk(KERN_WARNING "cciss: cmd %p has"
" completed with data underrun "
"reported\n", cmd);
break;
case CMD_DATA_OVERRUN:
printk(KERN_WARNING "cciss: cmd %p has"
" completed with data overrun "
"reported\n", cmd);
break;
case CMD_INVALID:
printk(KERN_WARNING "cciss: cmd %p is "
"reported invalid\n", cmd);
status = 0;
break;
case CMD_PROTOCOL_ERR:
printk(KERN_WARNING "cciss: cmd %p has "
"protocol error \n", cmd);
status = 0;
break;
case CMD_HARDWARE_ERR:
printk(KERN_WARNING "cciss: cmd %p had "
" hardware error\n", cmd);
status = 0;
break;
case CMD_CONNECTION_LOST:
printk(KERN_WARNING "cciss: cmd %p had "
"connection lost\n", cmd);
status=0;
break;
case CMD_ABORTED:
printk(KERN_WARNING "cciss: cmd %p was "
"aborted\n", cmd);
status=0;
break;
case CMD_ABORT_FAILED:
printk(KERN_WARNING "cciss: cmd %p reports "
"abort failed\n", cmd);
status=0;
break;
case CMD_UNSOLICITED_ABORT:
printk(KERN_WARNING "cciss%d: unsolicited "
"abort %p\n", h->ctlr, cmd);
if (cmd->retry_count < MAX_CMD_RETRIES) {
retry_cmd=1;
printk(KERN_WARNING
"cciss%d: retrying %p\n",
h->ctlr, cmd);
cmd->retry_count++;
} else
printk(KERN_WARNING
"cciss%d: %p retried too "
"many times\n", h->ctlr, cmd);
status=0;
break;
case CMD_TIMEOUT:
printk(KERN_WARNING "cciss: cmd %p timedout\n",
cmd);
status=0;
break;
default:
printk(KERN_WARNING "cciss: cmd %p returned "
"unknown status %x\n", cmd,
cmd->err_info->CommandStatus);
status=0;
}
}
/* We need to return this command */
if(retry_cmd) {
resend_cciss_cmd(h,cmd);
return;
}
/* command did not need to be retried */
/* unmap the DMA mapping for all the scatter gather elements */
for(i=0; i<cmd->Header.SGList; i++) {
temp64.val32.lower = cmd->SG[i].Addr.lower;
temp64.val32.upper = cmd->SG[i].Addr.upper;
pci_unmap_page(hba[cmd->ctlr]->pdev,
temp64.val, cmd->SG[i].Len,
(cmd->Request.Type.Direction == XFER_READ) ?
PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
}
complete_buffers(cmd->rq->bio, status);
#ifdef CCISS_DEBUG
printk("Done with %p\n", cmd->rq);
#endif /* CCISS_DEBUG */
end_that_request_last(cmd->rq);
cmd_free(h,cmd,1);
}
/*
* Get a request and submit it to the controller.
*/
static void do_cciss_request(request_queue_t *q)
{
ctlr_info_t *h= q->queuedata;
CommandList_struct *c;
int start_blk, seg;
struct request *creq;
u64bit temp64;
struct scatterlist tmp_sg[MAXSGENTRIES];
drive_info_struct *drv;
int i, dir;
/* We call start_io here in case there is a command waiting on the
* queue that has not been sent.
*/
if (blk_queue_plugged(q))
goto startio;
queue:
creq = elv_next_request(q);
if (!creq)
goto startio;
if (creq->nr_phys_segments > MAXSGENTRIES)
BUG();
if (( c = cmd_alloc(h, 1)) == NULL)
goto full;
blkdev_dequeue_request(creq);
spin_unlock_irq(q->queue_lock);
c->cmd_type = CMD_RWREQ;
c->rq = creq;
/* fill in the request */
drv = creq->rq_disk->private_data;
c->Header.ReplyQueue = 0; // unused in simple mode
c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag
c->Header.LUN.LogDev.VolId= drv->LunID;
c->Header.LUN.LogDev.Mode = 1;
c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
c->Request.Type.Type = TYPE_CMD; // It is a command.
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction =
(rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
c->Request.Timeout = 0; // Don't time out
c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
start_blk = creq->sector;
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
(int) creq->nr_sectors);
#endif /* CCISS_DEBUG */
seg = blk_rq_map_sg(q, creq, tmp_sg);
/* get the DMA records for the setup */
if (c->Request.Type.Direction == XFER_READ)
dir = PCI_DMA_FROMDEVICE;
else
dir = PCI_DMA_TODEVICE;
for (i=0; i<seg; i++)
{
c->SG[i].Len = tmp_sg[i].length;
temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
tmp_sg[i].offset, tmp_sg[i].length,
dir);
c->SG[i].Addr.lower = temp64.val32.lower;
c->SG[i].Addr.upper = temp64.val32.upper;
c->SG[i].Ext = 0; // we are not chaining
}
/* track how many SG entries we are using */
if( seg > h->maxSG)
h->maxSG = seg;
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg);
#endif /* CCISS_DEBUG */
c->Header.SGList = c->Header.SGTotal = seg;
c->Request.CDB[1]= 0;
c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB
c->Request.CDB[3]= (start_blk >> 16) & 0xff;
c->Request.CDB[4]= (start_blk >> 8) & 0xff;
c->Request.CDB[5]= start_blk & 0xff;
c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB
c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff;
c->Request.CDB[8]= creq->nr_sectors & 0xff;
c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
spin_lock_irq(q->queue_lock);
addQ(&(h->reqQ),c);
h->Qdepth++;
if(h->Qdepth > h->maxQsinceinit)
h->maxQsinceinit = h->Qdepth;
goto queue;
full:
blk_stop_queue(q);
startio:
/* We will already have the driver lock here so not need
* to lock it.
*/
start_io(h);
}
static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
{
ctlr_info_t *h = dev_id;
CommandList_struct *c;
unsigned long flags;
__u32 a, a1;
int j;
int start_queue = h->next_to_run;
/* Is this interrupt for us? */
if (( h->access.intr_pending(h) == 0) || (h->interrupts_enabled == 0))
return IRQ_NONE;
/*
* If there are completed commands in the completion queue,
* we had better do something about it.
*/
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
while( h->access.intr_pending(h))
{
while((a = h->access.command_completed(h)) != FIFO_EMPTY)
{
a1 = a;
a &= ~3;
if ((c = h->cmpQ) == NULL)
{
printk(KERN_WARNING "cciss: Completion of %08lx ignored\n", (unsigned long)a1);
continue;
}
while(c->busaddr != a) {
c = c->next;
if (c == h->cmpQ)
break;
}
/*
* If we've found the command, take it off the
* completion Q and free it
*/
if (c->busaddr == a) {
removeQ(&h->cmpQ, c);
if (c->cmd_type == CMD_RWREQ) {
complete_command(h, c, 0);
} else if (c->cmd_type == CMD_IOCTL_PEND) {
complete(c->waiting);
}
# ifdef CONFIG_CISS_SCSI_TAPE
else if (c->cmd_type == CMD_SCSI)
complete_scsi_command(c, 0, a1);
# endif
continue;
}
}
}
/* check to see if we have maxed out the number of commands that can
* be placed on the queue. If so then exit. We do this check here
* in case the interrupt we serviced was from an ioctl and did not
* free any new commands.
*/
if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
goto cleanup;
/* We have room on the queue for more commands. Now we need to queue
* them up. We will also keep track of the next queue to run so
* that every queue gets a chance to be started first.
*/
for (j=0; j < h->highest_lun + 1; j++){
int curr_queue = (start_queue + j) % (h->highest_lun + 1);
/* make sure the disk has been added and the drive is real
* because this can be called from the middle of init_one.
*/
if(!(h->drv[curr_queue].queue) ||
!(h->drv[curr_queue].heads))
continue;
blk_start_queue(h->gendisk[curr_queue]->queue);
/* check to see if we have maxed out the number of commands
* that can be placed on the queue.
*/
if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
{
if (curr_queue == start_queue){
h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
goto cleanup;
} else {
h->next_to_run = curr_queue;
goto cleanup;
}
} else {
curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
}
}
cleanup:
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
return IRQ_HANDLED;
}
/*
* We cannot read the structure directly, for portablity we must use
* the io functions.
* This is for debug only.
*/
#ifdef CCISS_DEBUG
static void print_cfg_table( CfgTable_struct *tb)
{
int i;
char temp_name[17];
printk("Controller Configuration information\n");
printk("------------------------------------\n");
for(i=0;i<4;i++)
temp_name[i] = readb(&(tb->Signature[i]));
temp_name[4]='\0';
printk(" Signature = %s\n", temp_name);
printk(" Spec Number = %d\n", readl(&(tb->SpecValence)));
printk(" Transport methods supported = 0x%x\n",
readl(&(tb-> TransportSupport)));
printk(" Transport methods active = 0x%x\n",
readl(&(tb->TransportActive)));
printk(" Requested transport Method = 0x%x\n",
readl(&(tb->HostWrite.TransportRequest)));
printk(" Coalese Interrupt Delay = 0x%x\n",
readl(&(tb->HostWrite.CoalIntDelay)));
printk(" Coalese Interrupt Count = 0x%x\n",
readl(&(tb->HostWrite.CoalIntCount)));
printk(" Max outstanding commands = 0x%d\n",
readl(&(tb->CmdsOutMax)));
printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes)));
for(i=0;i<16;i++)
temp_name[i] = readb(&(tb->ServerName[i]));
temp_name[16] = '\0';
printk(" Server Name = %s\n", temp_name);
printk(" Heartbeat Counter = 0x%x\n\n\n",
readl(&(tb->HeartBeat)));
}
#endif /* CCISS_DEBUG */
static void release_io_mem(ctlr_info_t *c)
{
/* if IO mem was not protected do nothing */
if( c->io_mem_addr == 0)
return;
release_region(c->io_mem_addr, c->io_mem_length);
c->io_mem_addr = 0;
c->io_mem_length = 0;
}
static int find_PCI_BAR_index(struct pci_dev *pdev,
unsigned long pci_bar_addr)
{
int i, offset, mem_type, bar_type;
if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
return 0;
offset = 0;
for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
bar_type = pci_resource_flags(pdev, i) &
PCI_BASE_ADDRESS_SPACE;
if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
offset += 4;
else {
mem_type = pci_resource_flags(pdev, i) &
PCI_BASE_ADDRESS_MEM_TYPE_MASK;
switch (mem_type) {
case PCI_BASE_ADDRESS_MEM_TYPE_32:
case PCI_BASE_ADDRESS_MEM_TYPE_1M:
offset += 4; /* 32 bit */
break;
case PCI_BASE_ADDRESS_MEM_TYPE_64:
offset += 8;
break;
default: /* reserved in PCI 2.2 */
printk(KERN_WARNING "Base address is invalid\n");
return -1;
break;
}
}
if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
return i+1;
}
return -1;
}
static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
{
ushort subsystem_vendor_id, subsystem_device_id, command;
__u32 board_id, scratchpad = 0;
__u64 cfg_offset;
__u32 cfg_base_addr;
__u64 cfg_base_addr_index;
int i;
/* check to see if controller has been disabled */
/* BEFORE trying to enable it */
(void) pci_read_config_word(pdev, PCI_COMMAND,&command);
if(!(command & 0x02))
{
printk(KERN_WARNING "cciss: controller appears to be disabled\n");
return(-1);
}
if (pci_enable_device(pdev))
{
printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
return( -1);
}
subsystem_vendor_id = pdev->subsystem_vendor;
subsystem_device_id = pdev->subsystem_device;
board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
subsystem_vendor_id);
/* search for our IO range so we can protect it */
for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
{
/* is this an IO range */
if( pci_resource_flags(pdev, i) & 0x01 ) {
c->io_mem_addr = pci_resource_start(pdev, i);
c->io_mem_length = pci_resource_end(pdev, i) -
pci_resource_start(pdev, i) +1;
#ifdef CCISS_DEBUG
printk("IO value found base_addr[%d] %lx %lx\n", i,
c->io_mem_addr, c->io_mem_length);
#endif /* CCISS_DEBUG */
/* register the IO range */
if(!request_region( c->io_mem_addr,
c->io_mem_length, "cciss"))
{
printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n",
c->io_mem_addr, c->io_mem_length);
c->io_mem_addr= 0;
c->io_mem_length = 0;
}
break;
}
}
#ifdef CCISS_DEBUG
printk("command = %x\n", command);
printk("irq = %x\n", pdev->irq);
printk("board_id = %x\n", board_id);
#endif /* CCISS_DEBUG */
c->intr = pdev->irq;
/*
* Memory base addr is first addr , the second points to the config
* table
*/
c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
#ifdef CCISS_DEBUG
printk("address 0 = %x\n", c->paddr);
#endif /* CCISS_DEBUG */
c->vaddr = remap_pci_mem(c->paddr, 200);
/* Wait for the board to become ready. (PCI hotplug needs this.)
* We poll for up to 120 secs, once per 100ms. */
for (i=0; i < 1200; i++) {
scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
if (scratchpad == CCISS_FIRMWARE_READY)
break;
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(HZ / 10); /* wait 100ms */
}
if (scratchpad != CCISS_FIRMWARE_READY) {
printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
return -1;
}
/* get the address index number */
cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET);
cfg_base_addr &= (__u32) 0x0000ffff;
#ifdef CCISS_DEBUG
printk("cfg base address = %x\n", cfg_base_addr);
#endif /* CCISS_DEBUG */
cfg_base_addr_index =
find_PCI_BAR_index(pdev, cfg_base_addr);
#ifdef CCISS_DEBUG
printk("cfg base address index = %x\n", cfg_base_addr_index);
#endif /* CCISS_DEBUG */
if (cfg_base_addr_index == -1) {
printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
release_io_mem(c);
return -1;
}
cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
#ifdef CCISS_DEBUG
printk("cfg offset = %x\n", cfg_offset);
#endif /* CCISS_DEBUG */
c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
cfg_base_addr_index) + cfg_offset,
sizeof(CfgTable_struct));
c->board_id = board_id;
#ifdef CCISS_DEBUG
print_cfg_table(c->cfgtable);
#endif /* CCISS_DEBUG */
for(i=0; i<NR_PRODUCTS; i++) {
if (board_id == products[i].board_id) {
c->product_name = products[i].product_name;
c->access = *(products[i].access);
break;
}
}
if (i == NR_PRODUCTS) {
printk(KERN_WARNING "cciss: Sorry, I don't know how"
" to access the Smart Array controller %08lx\n",
(unsigned long)board_id);
return -1;
}
if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
(readb(&c->cfgtable->Signature[1]) != 'I') ||
(readb(&c->cfgtable->Signature[2]) != 'S') ||
(readb(&c->cfgtable->Signature[3]) != 'S') )
{
printk("Does not appear to be a valid CISS config table\n");
return -1;
}
#ifdef CONFIG_X86
{
/* Need to enable prefetch in the SCSI core for 6400 in x86 */
__u32 prefetch;
prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
prefetch |= 0x100;
writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
}
#endif
#ifdef CCISS_DEBUG
printk("Trying to put board into Simple mode\n");
#endif /* CCISS_DEBUG */
c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
/* Update the field, and then ring the doorbell */
writel( CFGTBL_Trans_Simple,
&(c->cfgtable->HostWrite.TransportRequest));
writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
/* under certain very rare conditions, this can take awhile.
* (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
* as we enter this code.) */
for(i=0;i<MAX_CONFIG_WAIT;i++) {
if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
break;
/* delay and try again */
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(10);
}
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
#endif /* CCISS_DEBUG */
#ifdef CCISS_DEBUG
print_cfg_table(c->cfgtable);
#endif /* CCISS_DEBUG */
if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
{
printk(KERN_WARNING "cciss: unable to get board into"
" simple mode\n");
return -1;
}
return 0;
}
/*
* Gets information about the local volumes attached to the controller.
*/
static void cciss_getgeometry(int cntl_num)
{
ReportLunData_struct *ld_buff;
ReadCapdata_struct *size_buff;
InquiryData_struct *inq_buff;
int return_code;
int i;
int listlength = 0;
__u32 lunid = 0;
int block_size;
int total_size;
ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
if (ld_buff == NULL)
{
printk(KERN_ERR "cciss: out of memory\n");
return;
}
memset(ld_buff, 0, sizeof(ReportLunData_struct));
size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
if (size_buff == NULL)
{
printk(KERN_ERR "cciss: out of memory\n");
kfree(ld_buff);
return;
}
inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
if (inq_buff == NULL)
{
printk(KERN_ERR "cciss: out of memory\n");
kfree(ld_buff);
kfree(size_buff);
return;
}
/* Get the firmware version */
return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
if (return_code == IO_OK)
{
hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33];
hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34];
hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35];
} else /* send command failed */
{
printk(KERN_WARNING "cciss: unable to determine firmware"
" version of controller\n");
}
/* Get the number of logical volumes */
return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
if( return_code == IO_OK)
{
#ifdef CCISS_DEBUG
printk("LUN Data\n--------------------------\n");
#endif /* CCISS_DEBUG */
listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24;
listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16;
listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8;
listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]);
} else /* reading number of logical volumes failed */
{
printk(KERN_WARNING "cciss: report logical volume"
" command failed\n");
listlength = 0;
}
hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry
if (hba[cntl_num]->num_luns > CISS_MAX_LUN)
{
printk(KERN_ERR "ciss: only %d number of logical volumes supported\n",
CISS_MAX_LUN);
hba[cntl_num]->num_luns = CISS_MAX_LUN;
}
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0],
ld_buff->LUNListLength[1], ld_buff->LUNListLength[2],
ld_buff->LUNListLength[3], hba[cntl_num]->num_luns);
#endif /* CCISS_DEBUG */
hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
for(i=0; i< hba[cntl_num]->num_luns; i++)
{
lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24;
lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16;
lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8;
lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]);
hba[cntl_num]->drv[i].LunID = lunid;
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i,
ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2],
ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID);
#endif /* CCISS_DEBUG */
cciss_read_capacity(cntl_num, i, size_buff, 0,
&total_size, &block_size);
cciss_geometry_inquiry(cntl_num, i, 0, total_size, block_size,
inq_buff, &hba[cntl_num]->drv[i]);
}
kfree(ld_buff);
kfree(size_buff);
kfree(inq_buff);
}
/* Function to find the first free pointer into our hba[] array */
/* Returns -1 if no free entries are left. */
static int alloc_cciss_hba(void)
{
struct gendisk *disk[NWD];
int i, n;
for (n = 0; n < NWD; n++) {
disk[n] = alloc_disk(1 << NWD_SHIFT);
if (!disk[n])
goto out;
}
for(i=0; i< MAX_CTLR; i++) {
if (!hba[i]) {
ctlr_info_t *p;
p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
if (!p)
goto Enomem;
memset(p, 0, sizeof(ctlr_info_t));
for (n = 0; n < NWD; n++)
p->gendisk[n] = disk[n];
hba[i] = p;
return i;
}
}
printk(KERN_WARNING "cciss: This driver supports a maximum"
" of %d controllers.\n", MAX_CTLR);
goto out;
Enomem:
printk(KERN_ERR "cciss: out of memory.\n");
out:
while (n--)
put_disk(disk[n]);
return -1;
}
static void free_hba(int i)
{
ctlr_info_t *p = hba[i];
int n;
hba[i] = NULL;
for (n = 0; n < NWD; n++)
put_disk(p->gendisk[n]);
kfree(p);
}
/*
* This is it. Find all the controllers and register them. I really hate
* stealing all these major device numbers.
* returns the number of block devices registered.
*/
static int __devinit cciss_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
request_queue_t *q;
int i;
int j;
int rc;
printk(KERN_DEBUG "cciss: Device 0x%x has been found at"
" bus %d dev %d func %d\n",
pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
PCI_FUNC(pdev->devfn));
i = alloc_cciss_hba();
if(i < 0)
return (-1);
if (cciss_pci_init(hba[i], pdev) != 0)
goto clean1;
sprintf(hba[i]->devname, "cciss%d", i);
hba[i]->ctlr = i;
hba[i]->pdev = pdev;
/* configure PCI DMA stuff */
if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
printk("cciss: using DAC cycles\n");
else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
printk("cciss: not using DAC cycles\n");
else {
printk("cciss: no suitable DMA available\n");
goto clean1;
}
/*
* register with the major number, or get a dynamic major number
* by passing 0 as argument. This is done for greater than
* 8 controller support.
*/
if (i < MAX_CTLR_ORIG)
hba[i]->major = MAJOR_NR + i;
rc = register_blkdev(hba[i]->major, hba[i]->devname);
if(rc == -EBUSY || rc == -EINVAL) {
printk(KERN_ERR
"cciss: Unable to get major number %d for %s "
"on hba %d\n", hba[i]->major, hba[i]->devname, i);
goto clean1;
}
else {
if (i >= MAX_CTLR_ORIG)
hba[i]->major = rc;
}
/* make sure the board interrupts are off */
hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
if( request_irq(hba[i]->intr, do_cciss_intr,
SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
hba[i]->devname, hba[i])) {
printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
hba[i]->intr, hba[i]->devname);
goto clean2;
}
hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
&(hba[i]->cmd_pool_dhandle));
hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
&(hba[i]->errinfo_pool_dhandle));
if((hba[i]->cmd_pool_bits == NULL)
|| (hba[i]->cmd_pool == NULL)
|| (hba[i]->errinfo_pool == NULL)) {
printk( KERN_ERR "cciss: out of memory");
goto clean4;
}
spin_lock_init(&hba[i]->lock);
/* Initialize the pdev driver private data.
have it point to hba[i]. */
pci_set_drvdata(pdev, hba[i]);
/* command and error info recs zeroed out before
they are used */
memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
#endif /* CCISS_DEBUG */
cciss_getgeometry(i);
cciss_scsi_setup(i);
/* Turn the interrupts on so we can service requests */
hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
cciss_procinit(i);
for(j=0; j < NWD; j++) { /* mfm */
drive_info_struct *drv = &(hba[i]->drv[j]);
struct gendisk *disk = hba[i]->gendisk[j];
q = blk_init_queue(do_cciss_request, &hba[i]->lock);
if (!q) {
printk(KERN_ERR
"cciss: unable to allocate queue for disk %d\n",
j);
break;
}
drv->queue = q;
q->backing_dev_info.ra_pages = READ_AHEAD;
blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
/* This is a hardware imposed limit. */
blk_queue_max_hw_segments(q, MAXSGENTRIES);
/* This is a limit in the driver and could be eliminated. */
blk_queue_max_phys_segments(q, MAXSGENTRIES);
blk_queue_max_sectors(q, 512);
q->queuedata = hba[i];
sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
disk->major = hba[i]->major;
disk->first_minor = j << NWD_SHIFT;
disk->fops = &cciss_fops;
disk->queue = q;
disk->private_data = drv;
/* we must register the controller even if no disks exist */
/* this is for the online array utilities */
if(!drv->heads && j)
continue;
blk_queue_hardsect_size(q, drv->block_size);
set_capacity(disk, drv->nr_blocks);
add_disk(disk);
}
return(1);
clean4:
if(hba[i]->cmd_pool_bits)
kfree(hba[i]->cmd_pool_bits);
if(hba[i]->cmd_pool)
pci_free_consistent(hba[i]->pdev,
NR_CMDS * sizeof(CommandList_struct),
hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
if(hba[i]->errinfo_pool)
pci_free_consistent(hba[i]->pdev,
NR_CMDS * sizeof( ErrorInfo_struct),
hba[i]->errinfo_pool,
hba[i]->errinfo_pool_dhandle);
free_irq(hba[i]->intr, hba[i]);
clean2:
unregister_blkdev(hba[i]->major, hba[i]->devname);
clean1:
release_io_mem(hba[i]);
free_hba(i);
return(-1);
}
static void __devexit cciss_remove_one (struct pci_dev *pdev)
{
ctlr_info_t *tmp_ptr;
int i, j;
char flush_buf[4];
int return_code;
if (pci_get_drvdata(pdev) == NULL)
{
printk( KERN_ERR "cciss: Unable to remove device \n");
return;
}
tmp_ptr = pci_get_drvdata(pdev);
i = tmp_ptr->ctlr;
if (hba[i] == NULL)
{
printk(KERN_ERR "cciss: device appears to "
"already be removed \n");
return;
}
/* Turn board interrupts off and send the flush cache command */
/* sendcmd will turn off interrupt, and send the flush...
* To write all data in the battery backed cache to disks */
memset(flush_buf, 0, 4);
return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
TYPE_CMD);
if(return_code != IO_OK)
{
printk(KERN_WARNING "Error Flushing cache on controller %d\n",
i);
}
free_irq(hba[i]->intr, hba[i]);
pci_set_drvdata(pdev, NULL);
iounmap(hba[i]->vaddr);
cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
unregister_blkdev(hba[i]->major, hba[i]->devname);
remove_proc_entry(hba[i]->devname, proc_cciss);
/* remove it from the disk list */
for (j = 0; j < NWD; j++) {
struct gendisk *disk = hba[i]->gendisk[j];
if (disk->flags & GENHD_FL_UP)
blk_cleanup_queue(disk->queue);
del_gendisk(disk);
}
pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
kfree(hba[i]->cmd_pool_bits);
release_io_mem(hba[i]);
free_hba(i);
}
static struct pci_driver cciss_pci_driver = {
.name = "cciss",
.probe = cciss_init_one,
.remove = __devexit_p(cciss_remove_one),
.id_table = cciss_pci_device_id, /* id_table */
};
/*
* This is it. Register the PCI driver information for the cards we control
* the OS will call our registered routines when it finds one of our cards.
*/
static int __init cciss_init(void)
{
printk(KERN_INFO DRIVER_NAME "\n");
/* Register for our PCI devices */
return pci_module_init(&cciss_pci_driver);
}
static void __exit cciss_cleanup(void)
{
int i;
pci_unregister_driver(&cciss_pci_driver);
/* double check that all controller entrys have been removed */
for (i=0; i< MAX_CTLR; i++)
{
if (hba[i] != NULL)
{
printk(KERN_WARNING "cciss: had to remove"
" controller %d\n", i);
cciss_remove_one(hba[i]->pdev);
}
}
remove_proc_entry("cciss", proc_root_driver);
}
module_init(cciss_init);
module_exit(cciss_cleanup);
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