cciss.c
资源名称:block.rar [点击查看]
上传用户:ajay2009
上传日期:2009-05-22
资源大小:495k
文件大小:90k
源码类别:
驱动编程
开发平台:
Unix_Linux
- /*
- * 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 2.6.8)"
- #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,8)
- /* Embedded module documentation macros - see modules.h */
- MODULE_AUTHOR("Hewlett-Packard Company");
- MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.8");
- MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
- " SA6i P600 P800 P400 P400i E200 E200i");
- 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_CISSC,
- 0x103c, 0x3223, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
- 0x103c, 0x3234, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
- 0x103c, 0x3235, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3211, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3212, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3213, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3214, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3215, 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},
- { 0x3234103C, "Smart Array P400", &SA5_access},
- { 0x3235103C, "Smart Array P400i", &SA5_access},
- { 0x3211103C, "Smart Array E200i", &SA5_access},
- { 0x3212103C, "Smart Array E200", &SA5_access},
- { 0x3213103C, "Smart Array E200i", &SA5_access},
- { 0x3214103C, "Smart Array E200i", &SA5_access},
- { 0x3215103C, "Smart Array E200i", &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 rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk);
- static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, int clear_all);
- static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
- int withirq, unsigned int *total_size, unsigned int *block_size);
- 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);
- 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);
- 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);
- static void fail_all_cmds(unsigned long ctlr);
- #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 Controllern"
- "Board ID: 0x%08lxn"
- "Firmware Version: %c%c%c%cn"
- "IRQ: %dn"
- "Logical drives: %dn"
- "Current Q depth: %dn"
- "Current # commands on controller: %dn"
- "Max Q depth since init: %dn"
- "Max # commands on controller since init: %dn"
- "Max SG entries since init: %dnn",
- 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->heads == 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.%02uGBtRAID %sn",
- 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] = ' ';
- len = strlen(cmd); // above 3 lines ensure safety
- if (len && cmd[len-1] == 'n')
- cmd[--len] = ' ';
- # 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->cmdindex = -1;
- 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 %dn", 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->cmdindex = i;
- }
- 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 %sn", inode->i_bdev->bd_disk->disk_name);
- #endif /* CCISS_DEBUG */
- if (host->busy_initializing || drv->busy_configuring)
- return -EBUSY;
- /*
- * 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 %sn", 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 %lxn", 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 0n");
- 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 rebuild_lun_table(host, disk);
- case CCISS_REGNEWD:
- return rebuild_lun_table(host, NULL);
- 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;
- }
- /* This function will check the usage_count of the drive to be updated/added.
- * If the usage_count is zero then the drive information will be updated and
- * the disk will be re-registered with the kernel. If not then it will be
- * left alone for the next reboot. The exception to this is disk 0 which
- * will always be left registered with the kernel since it is also the
- * controller node. Any changes to disk 0 will show up on the next
- * reboot.
- */
- static void cciss_update_drive_info(int ctlr, int drv_index)
- {
- ctlr_info_t *h = hba[ctlr];
- struct gendisk *disk;
- ReadCapdata_struct *size_buff = NULL;
- InquiryData_struct *inq_buff = NULL;
- unsigned int block_size;
- unsigned int total_size;
- unsigned long flags = 0;
- int ret = 0;
- /* if the disk already exists then deregister it before proceeding*/
- if (h->drv[drv_index].raid_level != -1){
- spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
- h->drv[drv_index].busy_configuring = 1;
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- ret = deregister_disk(h->gendisk[drv_index],
- &h->drv[drv_index], 0);
- h->drv[drv_index].busy_configuring = 0;
- }
- /* If the disk is in use return */
- if (ret)
- return;
- /* Get information about the disk and modify the driver sturcture */
- 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;
- cciss_read_capacity(ctlr, drv_index, size_buff, 1,
- &total_size, &block_size);
- cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
- inq_buff, &h->drv[drv_index]);
- ++h->num_luns;
- disk = h->gendisk[drv_index];
- set_capacity(disk, h->drv[drv_index].nr_blocks);
- /* if it's the controller it's already added */
- if (drv_index){
- disk->queue = blk_init_queue(do_cciss_request, &h->lock);
- /* Set up queue information */
- disk->queue->backing_dev_info.ra_pages = READ_AHEAD;
- blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask);
- /* This is a hardware imposed limit. */
- blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
- /* This is a limit in the driver and could be eliminated. */
- blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
- blk_queue_max_sectors(disk->queue, 512);
- disk->queue->queuedata = hba[ctlr];
- blk_queue_hardsect_size(disk->queue,
- hba[ctlr]->drv[drv_index].block_size);
- h->drv[drv_index].queue = disk->queue;
- add_disk(disk);
- }
- freeret:
- kfree(size_buff);
- kfree(inq_buff);
- return;
- mem_msg:
- printk(KERN_ERR "cciss: out of memoryn");
- goto freeret;
- }
- /* This function will find the first index of the controllers drive array
- * that has a -1 for the raid_level and will return that index. This is
- * where new drives will be added. If the index to be returned is greater
- * than the highest_lun index for the controller then highest_lun is set
- * to this new index. If there are no available indexes then -1 is returned.
- */
- static int cciss_find_free_drive_index(int ctlr)
- {
- int i;
- for (i=0; i < CISS_MAX_LUN; i++){
- if (hba[ctlr]->drv[i].raid_level == -1){
- if (i > hba[ctlr]->highest_lun)
- hba[ctlr]->highest_lun = i;
- return i;
- }
- }
- return -1;
- }
- /* This function will add and remove logical drives from the Logical
- * drive array of the controller and maintain persistancy of ordering
- * so that mount points are preserved until the next reboot. This allows
- * for the removal of logical drives in the middle of the drive array
- * without a re-ordering of those drives.
- * INPUT
- * h = The controller to perform the operations on
- * del_disk = The disk to remove if specified. If the value given
- * is NULL then no disk is removed.
- */
- static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk)
- {
- int ctlr = h->ctlr;
- int num_luns;
- ReportLunData_struct *ld_buff = NULL;
- drive_info_struct *drv = NULL;
- int return_code;
- int listlength = 0;
- int i;
- int drv_found;
- int drv_index = 0;
- __u32 lunid = 0;
- unsigned long flags;
- /* Set busy_configuring flag for this operation */
- spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
- if (h->num_luns >= CISS_MAX_LUN){
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- return -EINVAL;
- }
- if (h->busy_configuring){
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- return -EBUSY;
- }
- h->busy_configuring = 1;
- /* if del_disk is NULL then we are being called to add a new disk
- * and update the logical drive table. If it is not NULL then
- * we will check if the disk is in use or not.
- */
- if (del_disk != NULL){
- drv = get_drv(del_disk);
- drv->busy_configuring = 1;
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- return_code = deregister_disk(del_disk, drv, 1);
- drv->busy_configuring = 0;
- h->busy_configuring = 0;
- return return_code;
- } else {
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
- ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
- if (ld_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){
- 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 failedn");
- listlength = 0;
- goto freeret;
- }
- num_luns = listlength / 8; /* 8 bytes per entry */
- if (num_luns > CISS_MAX_LUN){
- num_luns = CISS_MAX_LUN;
- printk(KERN_WARNING "cciss: more luns configured"
- " on controller than can be handled by"
- " this driver.n");
- }
- /* Compare controller drive array to drivers drive array.
- * Check for updates in the drive information and any new drives
- * on the controller.
- */
- for (i=0; i < num_luns; i++){
- int j;
- drv_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]);
- /* Find if the LUN is already in the drive array
- * of the controller. If so then update its info
- * if not is use. If it does not exist then find
- * the first free index and add it.
- */
- for (j=0; j <= h->highest_lun; j++){
- if (h->drv[j].LunID == lunid){
- drv_index = j;
- drv_found = 1;
- }
- }
- /* check if the drive was found already in the array */
- if (!drv_found){
- drv_index = cciss_find_free_drive_index(ctlr);
- if (drv_index == -1)
- goto freeret;
- }
- h->drv[drv_index].LunID = lunid;
- cciss_update_drive_info(ctlr, drv_index);
- } /* end for */
- } /* end else */
- freeret:
- kfree(ld_buff);
- h->busy_configuring = 0;
- /* We return -1 here to tell the ACU that we have registered/updated
- * all of the drives that we can and to keep it from calling us
- * additional times.
- */
- return -1;
- mem_msg:
- printk(KERN_ERR "cciss: out of memoryn");
- goto freeret;
- }
- /* This function will deregister the disk and it's queue from the
- * kernel. It must be called with the controller lock held and the
- * drv structures busy_configuring flag set. It's parameters are:
- *
- * disk = This is the disk to be deregistered
- * drv = This is the drive_info_struct associated with the disk to be
- * deregistered. It contains information about the disk used
- * by the driver.
- * clear_all = This flag determines whether or not the disk information
- * is going to be completely cleared out and the highest_lun
- * reset. Sometimes we want to clear out information about
- * the disk in preperation for re-adding it. In this case
- * the highest_lun should be left unchanged and the LunID
- * should not be cleared.
- */
- static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
- int clear_all)
- {
- ctlr_info_t *h = get_host(disk);
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
- /* make sure logical volume is NOT is use */
- if(clear_all || (h->gendisk[0] == disk)) {
- if (drv->usage_count > 1)
- return -EBUSY;
- }
- else
- if( drv->usage_count > 0 )
- return -EBUSY;
- /* invalidate the devices and deregister the disk. If it is disk
- * zero do not deregister it but just zero out it's values. This
- * allows us to delete disk zero but keep the controller registered.
- */
- if (h->gendisk[0] != disk){
- if (disk->flags & GENHD_FL_UP){
- blk_cleanup_queue(disk->queue);
- del_gendisk(disk);
- drv->queue = NULL;
- }
- }
- --h->num_luns;
- /* zero out the disk size info */
- drv->nr_blocks = 0;
- drv->block_size = 0;
- drv->heads = 0;
- drv->sectors = 0;
- drv->cylinders = 0;
- drv->raid_level = -1; /* This can be used as a flag variable to
- * indicate that this element of the drive
- * array is free.
- */
- if (clear_all){
- /* 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].heads)
- newhighest = i;
- }
- h->highest_lun = newhighest;
- }
- 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%cn", 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 %dn",
- ctlr, cmd);
- return IO_ERROR;
- }
- } else {
- printk(KERN_WARNING
- "cciss%d: unknown command type %dn", 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 errorsn", c);
- if( c->err_info->ScsiStatus)
- {
- printk(KERN_WARNING "cciss: cmd %p "
- "has SCSI Status = %xn",
- 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 invalidn", 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 errorn", c);
- return_status = IO_ERROR;
- break;
- case CMD_CONNECTION_LOST:
- printk(KERN_WARNING "cciss: cmd %p had "
- "connection lostn", c);
- return_status = IO_ERROR;
- break;
- case CMD_ABORTED:
- printk(KERN_WARNING "cciss: cmd %p was "
- "abortedn", c);
- return_status = IO_ERROR;
- break;
- case CMD_ABORT_FAILED:
- printk(KERN_WARNING "cciss: cmd %p reports "
- "abort failedn", c);
- return_status = IO_ERROR;
- break;
- case CMD_UNSOLICITED_ABORT:
- printk(KERN_WARNING
- "cciss%d: unsolicited abort %pn",
- ctlr, c);
- if (c->retry_count < MAX_CMD_RETRIES) {
- printk(KERN_WARNING
- "cciss%d: retrying %pn",
- 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 %xn", c,
- c->err_info->CommandStatus);
- return_status = IO_ERROR;
- }
- }
- /* unlock the buffers from DMA */
- buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
- buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
- pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
- c->SG[0].Len, 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 geometryn");
- 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 failedn");
- }
- printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %dnn",
- 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 failedn");
- *total_size = 0;
- *block_size = BLOCK_SIZE;
- }
- printk(KERN_INFO " blocks= %u block_size= %dn",
- *total_size, *block_size);
- return;
- }
- 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 memoryn");
- return 1;
- }
- inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
- if (inq_buff == NULL)
- {
- printk(KERN_WARNING "cciss: out of memoryn");
- 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)
- schedule_timeout_uninterruptible(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 offn");
- #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 completedn");
- #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 %pn",
- ctlr, c);
- if (c->retry_count < MAX_CMD_RETRIES) {
- printk(KERN_WARNING
- "cciss%d: retrying %pn",
- 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 timesn", 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 infon"
- " size %xn num %x value %xn", 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 */
- buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
- buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
- pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
- c->SG[0].Len, 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 fulln");
- 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%xn", 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%xn",
- cmd, cmd->err_info->ScsiStatus);
- }
- break;
- case CMD_DATA_UNDERRUN:
- printk(KERN_WARNING "cciss: cmd %p has"
- " completed with data underrun "
- "reportedn", cmd);
- break;
- case CMD_DATA_OVERRUN:
- printk(KERN_WARNING "cciss: cmd %p has"
- " completed with data overrun "
- "reportedn", cmd);
- break;
- case CMD_INVALID:
- printk(KERN_WARNING "cciss: cmd %p is "
- "reported invalidn", 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 errorn", cmd);
- status = 0;
- break;
- case CMD_CONNECTION_LOST:
- printk(KERN_WARNING "cciss: cmd %p had "
- "connection lostn", cmd);
- status=0;
- break;
- case CMD_ABORTED:
- printk(KERN_WARNING "cciss: cmd %p was "
- "abortedn", cmd);
- status=0;
- break;
- case CMD_ABORT_FAILED:
- printk(KERN_WARNING "cciss: cmd %p reports "
- "abort failedn", cmd);
- status=0;
- break;
- case CMD_UNSOLICITED_ABORT:
- printk(KERN_WARNING "cciss%d: unsolicited "
- "abort %pn", h->ctlr, cmd);
- if (cmd->retry_count < MAX_CMD_RETRIES) {
- retry_cmd=1;
- printk(KERN_WARNING
- "cciss%d: retrying %pn",
- h->ctlr, cmd);
- cmd->retry_count++;
- } else
- printk(KERN_WARNING
- "cciss%d: %p retried too "
- "many timesn", h->ctlr, cmd);
- status=0;
- break;
- case CMD_TIMEOUT:
- printk(KERN_WARNING "cciss: cmd %p timedoutn",
- cmd);
- status=0;
- break;
- default:
- printk(KERN_WARNING "cciss: cmd %p returned "
- "unknown status %xn", 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 %pn", 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
- /* got command from pool, so use the command block index instead */
- /* for direct lookups. */
- /* The first 2 bits are reserved for controller error reporting. */
- c->Header.Tag.lower = (c->cmdindex << 3);
- c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
- 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=%dn",(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 segmentsn", 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, a2;
- 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;
- if ((a & 0x04)) {
- a2 = (a >> 3);
- if (a2 >= NR_CMDS) {
- printk(KERN_WARNING "cciss: controller cciss%d failed, stopping.n", h->ctlr);
- fail_all_cmds(h->ctlr);
- return IRQ_HANDLED;
- }
- c = h->cmd_pool + a2;
- a = c->busaddr;
- } else {
- a &= ~3;
- if ((c = h->cmpQ) == NULL) {
- printk(KERN_WARNING "cciss: Completion of %08x ignoredn", 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 informationn");
- printk("------------------------------------n");
- for(i=0;i<4;i++)
- temp_name[i] = readb(&(tb->Signature[i]));
- temp_name[4]=' ';
- printk(" Signature = %sn", temp_name);
- printk(" Spec Number = %dn", readl(&(tb->SpecValence)));
- printk(" Transport methods supported = 0x%xn",
- readl(&(tb-> TransportSupport)));
- printk(" Transport methods active = 0x%xn",
- readl(&(tb->TransportActive)));
- printk(" Requested transport Method = 0x%xn",
- readl(&(tb->HostWrite.TransportRequest)));
- printk(" Coalese Interrupt Delay = 0x%xn",
- readl(&(tb->HostWrite.CoalIntDelay)));
- printk(" Coalese Interrupt Count = 0x%xn",
- readl(&(tb->HostWrite.CoalIntCount)));
- printk(" Max outstanding commands = 0x%dn",
- readl(&(tb->CmdsOutMax)));
- printk(" Bus Types = 0x%xn", readl(&(tb-> BusTypes)));
- for(i=0;i<16;i++)
- temp_name[i] = readb(&(tb->ServerName[i]));
- temp_name[16] = ' ';
- printk(" Server Name = %sn", temp_name);
- printk(" Heartbeat Counter = 0x%xnnn",
- 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 invalidn");
- 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 disabledn");
- return(-1);
- }
- if (pci_enable_device(pdev))
- {
- printk(KERN_ERR "cciss: Unable to Enable PCI devicen");
- 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 %lxn", 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=%ldn",
- c->io_mem_addr, c->io_mem_length);
- c->io_mem_addr= 0;
- c->io_mem_length = 0;
- }
- break;
- }
- }
- #ifdef CCISS_DEBUG
- printk("command = %xn", command);
- printk("irq = %xn", pdev->irq);
- printk("board_id = %xn", 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 = %xn", 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 = %xn", 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 = %xn", cfg_base_addr_index);
- #endif /* CCISS_DEBUG */
- if (cfg_base_addr_index == -1) {
- printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_indexn");
- release_io_mem(c);
- return -1;
- }
- cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
- #ifdef CCISS_DEBUG
- printk("cfg offset = %xn", 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 %08lxn",
- (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 tablen");
- 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 moden");
- #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 %xn", 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 moden");
- 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 memoryn");
- 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 memoryn");
- kfree(ld_buff);
- return;
- }
- inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
- if (inq_buff == NULL)
- {
- printk(KERN_ERR "cciss: out of memoryn");
- 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 controllern");
- }
- /* 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 Datan--------------------------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 failedn");
- 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 supportedn",
- CISS_MAX_LUN);
- hba[cntl_num]->num_luns = CISS_MAX_LUN;
- }
- #ifdef CCISS_DEBUG
- printk(KERN_DEBUG "Length = %x %x %x %x = %dn", 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++)
- for(i=0; i < CISS_MAX_LUN; i++)
- {
- if (i < hba[cntl_num]->num_luns){
- 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 = %xn", 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]);
- } else {
- /* initialize raid_level to indicate a free space */
- hba[cntl_num]->drv[i].raid_level = -1;
- }
- }
- 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 %dn",
- pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
- PCI_FUNC(pdev->devfn));
- i = alloc_cciss_hba();
- if(i < 0)
- return (-1);
- hba[i]->busy_initializing = 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 cyclesn");
- else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
- printk("cciss: not using DAC cyclesn");
- else {
- printk("cciss: no suitable DMA availablen");
- 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 %dn", 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 %sn",
- 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%dn",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);
- hba[i]->busy_initializing = 0;
- 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 %dn",
- 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);
- hba[i]->busy_initializing = 0;
- 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 %dn",
- 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(disk->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 %dn", i);
- cciss_remove_one(hba[i]->pdev);
- }
- }
- remove_proc_entry("cciss", proc_root_driver);
- }
- static void fail_all_cmds(unsigned long ctlr)
- {
- /* If we get here, the board is apparently dead. */
- ctlr_info_t *h = hba[ctlr];
- CommandList_struct *c;
- unsigned long flags;
- printk(KERN_WARNING "cciss%d: controller not responding.n", h->ctlr);
- h->alive = 0; /* the controller apparently died... */
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- pci_disable_device(h->pdev); /* Make sure it is really dead. */
- /* move everything off the request queue onto the completed queue */
- while( (c = h->reqQ) != NULL ) {
- removeQ(&(h->reqQ), c);
- h->Qdepth--;
- addQ (&(h->cmpQ), c);
- }
- /* Now, fail everything on the completed queue with a HW error */
- while( (c = h->cmpQ) != NULL ) {
- removeQ(&h->cmpQ, c);
- c->err_info->CommandStatus = CMD_HARDWARE_ERR;
- 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, 0);
- #endif
- }
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
- return;
- }
- module_init(cciss_init);
- module_exit(cciss_cleanup);