diff options
Diffstat (limited to 'drivers/block/cciss.c')
| -rw-r--r-- | drivers/block/cciss.c | 2976 |
1 files changed, 2976 insertions, 0 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c new file mode 100644 index 00000000000..8f7c1a1ed7f --- /dev/null +++ b/drivers/block/cciss.c @@ -0,0 +1,2976 @@ +/* + * Disk Array driver for HP SA 5xxx and 6xxx Controllers + * Copyright 2000, 2002 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/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"); +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_CISSB, + 0x103c, 0x3231, 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}, +}; + +/* 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 + + +#define CCISS_DMA_MASK 0xFFFFFFFF /* 32 bit DMA */ + +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.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; + int i; + + luninfo.LunID = drv->LunID; + luninfo.num_opens = drv->usage_count; + luninfo.num_parts = 0; + /* count partitions 1 to 15 with sizes > 0 */ + for (i = 0; i < MAX_PART - 1; i++) { + if (!disk->part[i]) + continue; + if (disk->part[i]->nr_sects != 0) + luninfo.num_parts++; + } + 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(host->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(h->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 < NWD; j++){ + int curr_queue = (start_queue + j) % NWD; + /* 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->gendisk[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) % NWD; + goto cleanup; + } else { + h->next_to_run = curr_queue; + goto cleanup; + } + } else { + curr_queue = (curr_queue + 1) % NWD; + } + } + +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); + } + if (pci_set_dma_mask(pdev, CCISS_DMA_MASK ) != 0) + { + printk(KERN_ERR "cciss: Unable to set DMA mask\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, 0xffffffffffffffffULL)) + printk("cciss: using DAC cycles\n"); + else if (!pci_set_dma_mask(pdev, 0xffffffff)) + 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); + q = blk_init_queue(do_cciss_request, &hba[i]->lock); + if (!q) + goto clean4; + + q->backing_dev_info.ra_pages = READ_AHEAD; + hba[i]->queue = q; + q->queuedata = hba[i]; + + /* 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); + + 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); + + + for(j=0; j<NWD; j++) { + drive_info_struct *drv = &(hba[i]->drv[j]); + struct gendisk *disk = hba[i]->gendisk[j]; + + 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 = hba[i]->queue; + 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(hba[i]->queue, 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) + del_gendisk(disk); + } + + blk_cleanup_queue(hba[i]->queue); + 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); |