diff options
Diffstat (limited to 'drivers/block/cciss.c')
| -rw-r--r-- | drivers/block/cciss.c | 3757 |
1 files changed, 3757 insertions, 0 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c new file mode 100644 index 0000000..9f7c543 --- /dev/null +++ b/drivers/block/cciss.c @@ -0,0 +1,3757 @@ +/* + * Disk Array driver for HP Smart Array controllers. + * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA. + * + * Questions/Comments/Bugfixes to iss_storagedev@hp.com + * + */ + +#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/seq_file.h> +#include <linux/init.h> +#include <linux/hdreg.h> +#include <linux/spinlock.h> +#include <linux/compat.h> +#include <linux/blktrace_api.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> +#include <scsi/scsi.h> +#include <scsi/sg.h> +#include <scsi/scsi_ioctl.h> +#include <linux/cdrom.h> +#include <linux/scatterlist.h> + +#define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) +#define DRIVER_NAME "HP CISS Driver (v 3.6.20)" +#define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20) + +/* Embedded module documentation macros - see modules.h */ +MODULE_AUTHOR("Hewlett-Packard Company"); +MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); +MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" + " SA6i P600 P800 P400 P400i E200 E200i E500 P700m" + " Smart Array G2 Series SAS/SATA Controllers"); +MODULE_VERSION("3.6.20"); +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}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, + {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, + {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, + {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, + PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, + {0,} +}; + +MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); + +/* 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}, + {0x3237103C, "Smart Array E500", &SA5_access}, + {0x323D103C, "Smart Array P700m", &SA5_access}, + {0x3241103C, "Smart Array P212", &SA5_access}, + {0x3243103C, "Smart Array P410", &SA5_access}, + {0x3245103C, "Smart Array P410i", &SA5_access}, + {0x3247103C, "Smart Array P411", &SA5_access}, + {0x3249103C, "Smart Array P812", &SA5_access}, + {0x324A103C, "Smart Array P712m", &SA5_access}, + {0x324B103C, "Smart Array P711m", &SA5_access}, + {0xFFFF103C, "Unknown Smart Array", &SA5_access}, +}; + +/* How long to wait (in milliseconds) 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 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(struct request_queue *q); +static irqreturn_t do_cciss_intr(int irq, void *dev_id); +static int cciss_open(struct block_device *bdev, fmode_t mode); +static int cciss_release(struct gendisk *disk, fmode_t mode); +static int cciss_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg); +static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); + +static int cciss_revalidate(struct gendisk *disk); +static int rebuild_lun_table(ctlr_info_t *h, int first_time); +static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, + int clear_all); + +static void cciss_read_capacity(int ctlr, int logvol, int withirq, + sector_t *total_size, unsigned int *block_size); +static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, + sector_t *total_size, unsigned int *block_size); +static void cciss_geometry_inquiry(int ctlr, int logvol, + int withirq, sector_t total_size, + unsigned int block_size, InquiryData_struct *inq_buff, + drive_info_struct *drv); +static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, + __u32); +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 void cciss_procinit(int i); +#else +static void cciss_procinit(int i) +{ +} +#endif /* CONFIG_PROC_FS */ + +#ifdef CONFIG_COMPAT +static int cciss_compat_ioctl(struct block_device *, fmode_t, + unsigned, unsigned long); +#endif + +static struct block_device_operations cciss_fops = { + .owner = THIS_MODULE, + .open = cciss_open, + .release = cciss_release, + .locked_ioctl = cciss_ioctl, + .getgeo = cciss_getgeo, +#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 */ + +#define RAID_UNKNOWN 6 + +#ifdef CONFIG_PROC_FS + +/* + * Report information about this controller. + */ +#define ENG_GIG 1000000000 +#define ENG_GIG_FACTOR (ENG_GIG/512) +#define ENGAGE_SCSI "engage scsi" +static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", + "UNKNOWN" +}; + +static struct proc_dir_entry *proc_cciss; + +static void cciss_seq_show_header(struct seq_file *seq) +{ + ctlr_info_t *h = seq->private; + + seq_printf(seq, "%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", + 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[SIMPLE_MODE_INT], + h->num_luns, + h->Qdepth, h->commands_outstanding, + h->maxQsinceinit, h->max_outstanding, h->maxSG); + +#ifdef CONFIG_CISS_SCSI_TAPE + cciss_seq_tape_report(seq, h->ctlr); +#endif /* CONFIG_CISS_SCSI_TAPE */ +} + +static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) +{ + ctlr_info_t *h = seq->private; + unsigned ctlr = h->ctlr; + unsigned long flags; + + /* 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 ERR_PTR(-EBUSY); + } + h->busy_configuring = 1; + spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); + + if (*pos == 0) + cciss_seq_show_header(seq); + + return pos; +} + +static int cciss_seq_show(struct seq_file *seq, void *v) +{ + sector_t vol_sz, vol_sz_frac; + ctlr_info_t *h = seq->private; + unsigned ctlr = h->ctlr; + loff_t *pos = v; + drive_info_struct *drv = &h->drv[*pos]; + + if (*pos > h->highest_lun) + return 0; + + if (drv->heads == 0) + return 0; + + 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; + seq_printf(seq, "cciss/c%dd%d:" + "\t%4u.%02uGB\tRAID %s\n", + ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, + raid_label[drv->raid_level]); + return 0; +} + +static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + ctlr_info_t *h = seq->private; + + if (*pos > h->highest_lun) + return NULL; + *pos += 1; + + return pos; +} + +static void cciss_seq_stop(struct seq_file *seq, void *v) +{ + ctlr_info_t *h = seq->private; + + /* Only reset h->busy_configuring if we succeeded in setting + * it during cciss_seq_start. */ + if (v == ERR_PTR(-EBUSY)) + return; + + h->busy_configuring = 0; +} + +static struct seq_operations cciss_seq_ops = { + .start = cciss_seq_start, + .show = cciss_seq_show, + .next = cciss_seq_next, + .stop = cciss_seq_stop, +}; + +static int cciss_seq_open(struct inode *inode, struct file *file) +{ + int ret = seq_open(file, &cciss_seq_ops); + struct seq_file *seq = file->private_data; + + if (!ret) + seq->private = PDE(inode)->data; + + return ret; +} + +static ssize_t +cciss_proc_write(struct file *file, const char __user *buf, + size_t length, loff_t *ppos) +{ + int err; + char *buffer; + +#ifndef CONFIG_CISS_SCSI_TAPE + return -EINVAL; +#endif + + if (!buf || length > PAGE_SIZE - 1) + return -EINVAL; + + buffer = (char *)__get_free_page(GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + err = -EFAULT; + if (copy_from_user(buffer, buf, length)) + goto out; + buffer[length] = '\0'; + +#ifdef CONFIG_CISS_SCSI_TAPE + if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { + struct seq_file *seq = file->private_data; + ctlr_info_t *h = seq->private; + int rc; + + rc = cciss_engage_scsi(h->ctlr); + if (rc != 0) + err = -rc; + else + err = length; + } else +#endif /* CONFIG_CISS_SCSI_TAPE */ + err = -EINVAL; + /* might be nice to have "disengage" too, but it's not + safely possible. (only 1 module use count, lock issues.) */ + +out: + free_page((unsigned long)buffer); + return err; +} + +static struct file_operations cciss_proc_fops = { + .owner = THIS_MODULE, + .open = cciss_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, + .write = cciss_proc_write, +}; + +static void __devinit cciss_procinit(int i) +{ + struct proc_dir_entry *pde; + + if (proc_cciss == NULL) + proc_cciss = proc_mkdir("driver/cciss", NULL); + if (!proc_cciss) + return; + pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | + S_IROTH, proc_cciss, + &cciss_proc_fops, hba[i]); +} +#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, h->nr_cmds); + if (i == h->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->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 block_device *bdev, fmode_t mode) +{ + ctlr_info_t *host = get_host(bdev->bd_disk); + drive_info_struct *drv = get_drv(bdev->bd_disk); + +#ifdef CCISS_DEBUG + printk(KERN_DEBUG "cciss_open %s\n", 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->heads == 0) { + if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ + /* if not node 0 make sure it is a partition = 0 */ + if (MINOR(bdev->bd_dev) & 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 gendisk *disk, fmode_t mode) +{ + ctlr_info_t *host = get_host(disk); + drive_info_struct *drv = get_drv(disk); + +#ifdef CCISS_DEBUG + printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); +#endif /* CCISS_DEBUG */ + + drv->usage_count--; + host->usage_count--; + return 0; +} + +#ifdef CONFIG_COMPAT + +static int do_ioctl(struct block_device *bdev, fmode_t mode, + unsigned cmd, unsigned long arg) +{ + int ret; + lock_kernel(); + ret = cciss_ioctl(bdev, mode, cmd, arg); + unlock_kernel(); + return ret; +} + +static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, + unsigned cmd, unsigned long arg); +static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, + unsigned cmd, unsigned long arg); + +static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, + 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(bdev, mode, cmd, arg); + + case CCISS_PASSTHRU32: + return cciss_ioctl32_passthru(bdev, mode, cmd, arg); + case CCISS_BIG_PASSTHRU32: + return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); + + default: + return -ENOIOCTLCMD; + } +} + +static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, + 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(bdev, mode, 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 block_device *bdev, fmode_t mode, + 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(bdev, mode, 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 + +static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) +{ + drive_info_struct *drv = get_drv(bdev->bd_disk); + + if (!drv->cylinders) + return -ENXIO; + + geo->heads = drv->heads; + geo->sectors = drv->sectors; + geo->cylinders = drv->cylinders; + return 0; +} + +/* + * ioctl + */ +static int cciss_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg) +{ + 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 CCISS_GETPCIINFO: + { + cciss_pci_info_struct pciinfo; + + if (!arg) + return -EINVAL; + pciinfo.domain = pci_domain_nr(host->pdev->bus); + pciinfo.bus = host->pdev->bus->number; + pciinfo.dev_fn = host->pdev->devfn; + pciinfo.board_id = host->board_id; + if (copy_to_user + (argp, &pciinfo, sizeof(cciss_pci_info_struct))) + return -EFAULT; + return 0; + } + case CCISS_GETINTINFO: + { + cciss_coalint_struct intinfo; + if (!arg) + return -EINVAL; + intinfo.delay = + readl(&host->cfgtable->HostWrite.CoalIntDelay); + intinfo.count = + readl(&host->cfgtable->HostWrite.CoalIntCount); + if (copy_to_user + (argp, &intinfo, sizeof(cciss_coalint_struct))) + return -EFAULT; + return 0; + } + case CCISS_SETINTINFO: + { + cciss_coalint_struct intinfo; + unsigned long flags; + int i; + + if (!arg) + return -EINVAL; + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + if (copy_from_user + (&intinfo, argp, sizeof(cciss_coalint_struct))) + return -EFAULT; + if ((intinfo.delay == 0) && (intinfo.count == 0)) + { +// printk("cciss_ioctl: delay and count cannot be 0\n"); + return -EINVAL; + } + spin_lock_irqsave(CCISS_LOCK(ctlr), flags); + /* Update the field, and then ring the doorbell */ + writel(intinfo.delay, + &(host->cfgtable->HostWrite.CoalIntDelay)); + writel(intinfo.count, + &(host->cfgtable->HostWrite.CoalIntCount)); + writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); + + for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { + if (!(readl(host->vaddr + SA5_DOORBELL) + & CFGTBL_ChangeReq)) + break; + /* delay and try again */ + udelay(1000); + } + spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); + if (i >= MAX_IOCTL_CONFIG_WAIT) + return -EAGAIN; + return 0; + } + case CCISS_GETNODENAME: + { + NodeName_type NodeName; + int i; + + if (!arg) + return -EINVAL; + for (i = 0; i < 16; i++) + NodeName[i] = + readb(&host->cfgtable->ServerName[i]); + if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) + return -EFAULT; + return 0; + } + case CCISS_SETNODENAME: + { + NodeName_type NodeName; + unsigned long flags; + int i; + + if (!arg) + return -EINVAL; + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (copy_from_user + (NodeName, argp, sizeof(NodeName_type))) + return -EFAULT; + + spin_lock_irqsave(CCISS_LOCK(ctlr), flags); + + /* Update the field, and then ring the doorbell */ + for (i = 0; i < 16; i++) + writeb(NodeName[i], + &host->cfgtable->ServerName[i]); + + writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); + + for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { + if (!(readl(host->vaddr + SA5_DOORBELL) + & CFGTBL_ChangeReq)) + break; + /* delay and try again */ + udelay(1000); + } + spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); + if (i >= MAX_IOCTL_CONFIG_WAIT) + return -EAGAIN; + return 0; + } + + case CCISS_GETHEARTBEAT: + { + Heartbeat_type heartbeat; + + if (!arg) + return -EINVAL; + heartbeat = readl(&host->cfgtable->HeartBeat); + if (copy_to_user + (argp, &heartbeat, sizeof(Heartbeat_type))) + return -EFAULT; + return 0; + } + case CCISS_GETBUSTYPES: + { + BusTypes_type BusTypes; + + if (!arg) + return -EINVAL; + BusTypes = readl(&host->cfgtable->BusTypes); + if (copy_to_user + (argp, &BusTypes, sizeof(BusTypes_type))) + return -EFAULT; + return 0; + } + case CCISS_GETFIRMVER: + { + FirmwareVer_type firmware; + + if (!arg) + return -EINVAL; + memcpy(firmware, host->firm_ver, 4); + + if (copy_to_user + (argp, firmware, sizeof(FirmwareVer_type))) + return -EFAULT; + return 0; + } + case CCISS_GETDRIVVER: + { + DriverVer_type DriverVer = DRIVER_VERSION; + + if (!arg) + return -EINVAL; + + if (copy_to_user + (argp, &DriverVer, sizeof(DriverVer_type))) + return -EFAULT; + return 0; + } + + case CCISS_DEREGDISK: + case CCISS_REGNEWD: + case CCISS_REVALIDVOLS: + return rebuild_lun_table(host, 0); + + 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_PASSTHRU: + { + IOCTL_Command_struct iocommand; + CommandList_struct *c; + char *buff = NULL; + u64bit temp64; + unsigned long flags; + DECLARE_COMPLETION_ONSTACK(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_ONSTACK(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 = + kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); + if (!buff) { + status = -ENOMEM; + goto cleanup1; + } + buff_size = 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) { + if (copy_from_user + (buff[sg_used], data_ptr, sz)) { + status = -EFAULT; + 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++) + kfree(buff[i]); + kfree(buff); + } + kfree(buff_size); + kfree(ioc); + return status; + } + + /* scsi_cmd_ioctl handles these, below, though some are not */ + /* very meaningful for cciss. SG_IO is the main one people want. */ + + case SG_GET_VERSION_NUM: + case SG_SET_TIMEOUT: + case SG_GET_TIMEOUT: + case SG_GET_RESERVED_SIZE: + case SG_SET_RESERVED_SIZE: + case SG_EMULATED_HOST: + case SG_IO: + case SCSI_IOCTL_SEND_COMMAND: + return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); + + /* scsi_cmd_ioctl would normally handle these, below, but */ + /* they aren't a good fit for cciss, as CD-ROMs are */ + /* not supported, and we don't have any bus/target/lun */ + /* which we present to the kernel. */ + + case CDROM_SEND_PACKET: + case CDROMCLOSETRAY: + case CDROMEJECT: + case SCSI_IOCTL_GET_IDLUN: + case SCSI_IOCTL_GET_BUS_NUMBER: + default: + return -ENOTTY; + } +} + +static void cciss_check_queues(ctlr_info_t *h) +{ + int start_queue = h->next_to_run; + int i; + + /* 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, h->nr_cmds)) == h->nr_cmds) + return; + + /* 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 (i = 0; i < h->highest_lun + 1; i++) { + int curr_queue = (start_queue + i) % (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, h->nr_cmds)) == h->nr_cmds) { + if (curr_queue == start_queue) { + h->next_to_run = + (start_queue + 1) % (h->highest_lun + 1); + break; + } else { + h->next_to_run = curr_queue; + break; + } + } + } +} + +static void cciss_softirq_done(struct request *rq) +{ + CommandList_struct *cmd = rq->completion_data; + ctlr_info_t *h = hba[cmd->ctlr]; + unsigned long flags; + u64bit temp64; + int i, ddir; + + if (cmd->Request.Type.Direction == XFER_READ) + ddir = PCI_DMA_FROMDEVICE; + else + ddir = PCI_DMA_TODEVICE; + + /* 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(h->pdev, temp64.val, cmd->SG[i].Len, ddir); + } + +#ifdef CCISS_DEBUG + printk("Done with %p\n", rq); +#endif /* CCISS_DEBUG */ + + if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, blk_rq_bytes(rq))) + BUG(); + + spin_lock_irqsave(&h->lock, flags); + cmd_free(h, cmd, 1); + cciss_check_queues(h); + spin_unlock_irqrestore(&h->lock, flags); +} + +/* This function gets the serial number of a logical drive via + * inquiry page 0x83. Serial no. is 16 bytes. If the serial + * number cannot be had, for whatever reason, 16 bytes of 0xff + * are returned instead. + */ +static void cciss_get_serial_no(int ctlr, int logvol, int withirq, + unsigned char *serial_no, int buflen) +{ +#define PAGE_83_INQ_BYTES 64 + int rc; + unsigned char *buf; + + if (buflen > 16) + buflen = 16; + memset(serial_no, 0xff, buflen); + buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); + if (!buf) + return; + memset(serial_no, 0, buflen); + if (withirq) + rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, + PAGE_83_INQ_BYTES, 1, logvol, 0x83, TYPE_CMD); + else + rc = sendcmd(CISS_INQUIRY, ctlr, buf, + PAGE_83_INQ_BYTES, 1, logvol, 0x83, NULL, TYPE_CMD); + if (rc == IO_OK) + memcpy(serial_no, &buf[8], buflen); + kfree(buf); + return; +} + +static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, + int drv_index) +{ + disk->queue = blk_init_queue(do_cciss_request, &h->lock); + sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); + disk->major = h->major; + disk->first_minor = drv_index << NWD_SHIFT; + disk->fops = &cciss_fops; + disk->private_data = &h->drv[drv_index]; + disk->driverfs_dev = &h->pdev->dev; + + /* Set up queue information */ + blk_queue_bounce_limit(disk->queue, h->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, h->cciss_max_sectors); + + blk_queue_softirq_done(disk->queue, cciss_softirq_done); + + disk->queue->queuedata = h; + + blk_queue_hardsect_size(disk->queue, + h->drv[drv_index].block_size); + + /* Make sure all queue data is written out before */ + /* setting h->drv[drv_index].queue, as setting this */ + /* allows the interrupt handler to start the queue */ + wmb(); + h->drv[drv_index].queue = disk->queue; + add_disk(disk); +} + +/* This function will check the usage_count of the drive to be updated/added. + * If the usage_count is zero and it is a heretofore unknown drive, or, + * the drive's capacity, geometry, or serial number has changed, + * then the drive information will be updated and the disk will be + * re-registered with the kernel. If these conditions don't hold, + * 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, int first_time) +{ + ctlr_info_t *h = hba[ctlr]; + struct gendisk *disk; + InquiryData_struct *inq_buff = NULL; + unsigned int block_size; + sector_t total_size; + unsigned long flags = 0; + int ret = 0; + drive_info_struct *drvinfo; + int was_only_controller_node; + + /* Get information about the disk and modify the driver structure */ + inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); + drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL); + if (inq_buff == NULL || drvinfo == NULL) + goto mem_msg; + + /* See if we're trying to update the "controller node" + * this will happen the when the first logical drive gets + * created by ACU. + */ + was_only_controller_node = (drv_index == 0 && + h->drv[0].raid_level == -1); + + /* testing to see if 16-byte CDBs are already being used */ + if (h->cciss_read == CCISS_READ_16) { + cciss_read_capacity_16(h->ctlr, drv_index, 1, + &total_size, &block_size); + + } else { + cciss_read_capacity(ctlr, drv_index, 1, + &total_size, &block_size); + + /* if read_capacity returns all F's this volume is >2TB */ + /* in size so we switch to 16-byte CDB's for all */ + /* read/write ops */ + if (total_size == 0xFFFFFFFFULL) { + cciss_read_capacity_16(ctlr, drv_index, 1, + &total_size, &block_size); + h->cciss_read = CCISS_READ_16; + h->cciss_write = CCISS_WRITE_16; + } else { + h->cciss_read = CCISS_READ_10; + h->cciss_write = CCISS_WRITE_10; + } + } + + cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, + inq_buff, drvinfo); + drvinfo->block_size = block_size; + drvinfo->nr_blocks = total_size + 1; + + cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, + sizeof(drvinfo->serial_no)); + + /* Is it the same disk we already know, and nothing's changed? */ + if (h->drv[drv_index].raid_level != -1 && + ((memcmp(drvinfo->serial_no, + h->drv[drv_index].serial_no, 16) == 0) && + drvinfo->block_size == h->drv[drv_index].block_size && + drvinfo->nr_blocks == h->drv[drv_index].nr_blocks && + drvinfo->heads == h->drv[drv_index].heads && + drvinfo->sectors == h->drv[drv_index].sectors && + drvinfo->cylinders == h->drv[drv_index].cylinders)) + /* The disk is unchanged, nothing to update */ + goto freeret; + + /* If we get here it's not the same disk, or something's changed, + * so we need to * deregister it, and re-register it, if it's not + * in use. + * If the disk already exists then deregister it before proceeding + * (unless it's the first disk (for the controller node). + */ + if (h->drv[drv_index].raid_level != -1 && drv_index != 0) { + printk(KERN_WARNING "disk %d has changed.\n", drv_index); + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + h->drv[drv_index].busy_configuring = 1; + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + + /* deregister_disk sets h->drv[drv_index].queue = NULL + * which keeps the interrupt handler from starting + * the queue. + */ + 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) + goto freeret; + + /* Save the new information from cciss_geometry_inquiry + * and serial number inquiry. + */ + h->drv[drv_index].block_size = drvinfo->block_size; + h->drv[drv_index].nr_blocks = drvinfo->nr_blocks; + h->drv[drv_index].heads = drvinfo->heads; + h->drv[drv_index].sectors = drvinfo->sectors; + h->drv[drv_index].cylinders = drvinfo->cylinders; + h->drv[drv_index].raid_level = drvinfo->raid_level; + memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16); + + ++h->num_luns; + disk = h->gendisk[drv_index]; + set_capacity(disk, h->drv[drv_index].nr_blocks); + + /* If it's not disk 0 (drv_index != 0) + * or if it was disk 0, but there was previously + * no actual corresponding configured logical drive + * (raid_leve == -1) then we want to update the + * logical drive's information. + */ + if (drv_index || first_time) + cciss_add_disk(h, disk, drv_index); + +freeret: + kfree(inq_buff); + kfree(drvinfo); + return; +mem_msg: + printk(KERN_ERR "cciss: out of memory\n"); + 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. + * "controller_node" is used to know if this is a real logical drive, or just + * the controller node, which determines if this counts towards highest_lun. + */ +static int cciss_find_free_drive_index(int ctlr, int controller_node) +{ + int i; + + for (i = 0; i < CISS_MAX_LUN; i++) { + if (hba[ctlr]->drv[i].raid_level == -1) { + if (i > hba[ctlr]->highest_lun) + if (!controller_node) + hba[ctlr]->highest_lun = i; + return i; + } + } + return -1; +} + +/* cciss_add_gendisk finds a free hba[]->drv structure + * and allocates a gendisk if needed, and sets the lunid + * in the drvinfo structure. It returns the index into + * the ->drv[] array, or -1 if none are free. + * is_controller_node indicates whether highest_lun should + * count this disk, or if it's only being added to provide + * a means to talk to the controller in case no logical + * drives have yet been configured. + */ +static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) +{ + int drv_index; + + drv_index = cciss_find_free_drive_index(h->ctlr, controller_node); + if (drv_index == -1) + return -1; + /*Check if the gendisk needs to be allocated */ + if (!h->gendisk[drv_index]) { + h->gendisk[drv_index] = + alloc_disk(1 << NWD_SHIFT); + if (!h->gendisk[drv_index]) { + printk(KERN_ERR "cciss%d: could not " + "allocate a new disk %d\n", + h->ctlr, drv_index); + return -1; + } + } + h->drv[drv_index].LunID = lunid; + + /* Don't need to mark this busy because nobody */ + /* else knows about this disk yet to contend */ + /* for access to it. */ + h->drv[drv_index].busy_configuring = 0; + wmb(); + return drv_index; +} + +/* This is for the special case of a controller which + * has no logical drives. In this case, we still need + * to register a disk so the controller can be accessed + * by the Array Config Utility. + */ +static void cciss_add_controller_node(ctlr_info_t *h) +{ + struct gendisk *disk; + int drv_index; + + if (h->gendisk[0] != NULL) /* already did this? Then bail. */ + return; + + drv_index = cciss_add_gendisk(h, 0, 1); + if (drv_index == -1) { + printk(KERN_WARNING "cciss%d: could not " + "add disk 0.\n", h->ctlr); + return; + } + h->drv[drv_index].block_size = 512; + h->drv[drv_index].nr_blocks = 0; + h->drv[drv_index].heads = 0; + h->drv[drv_index].sectors = 0; + h->drv[drv_index].cylinders = 0; + h->drv[drv_index].raid_level = -1; + memset(h->drv[drv_index].serial_no, 0, 16); + disk = h->gendisk[drv_index]; + cciss_add_disk(h, disk, drv_index); +} + +/* This function will add and remove logical drives from the Logical + * drive array of the controller and maintain persistency 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 + */ +static int rebuild_lun_table(ctlr_info_t *h, int first_time) +{ + int ctlr = h->ctlr; + int num_luns; + ReportLunData_struct *ld_buff = NULL; + int return_code; + int listlength = 0; + int i; + int drv_found; + int drv_index = 0; + __u32 lunid = 0; + unsigned long flags; + + if (!capable(CAP_SYS_RAWIO)) + return -EPERM; + + /* Set busy_configuring flag for this operation */ + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + if (h->busy_configuring) { + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + return -EBUSY; + } + h->busy_configuring = 1; + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + + 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 = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); + else { /* reading number of logical volumes failed */ + printk(KERN_WARNING "cciss: report logical volume" + " command failed\n"); + 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"); + } + + if (num_luns == 0) + cciss_add_controller_node(h); + + /* Compare controller drive array to driver's drive array + * to see if any drives are missing on the controller due + * to action of Array Config Utility (user deletes drive) + * and deregister logical drives which have disappeared. + */ + for (i = 0; i <= h->highest_lun; i++) { + int j; + drv_found = 0; + + /* skip holes in the array from already deleted drives */ + if (h->drv[i].raid_level == -1) + continue; + + for (j = 0; j < num_luns; j++) { + memcpy(&lunid, &ld_buff->LUN[j][0], 4); + lunid = le32_to_cpu(lunid); + if (h->drv[i].LunID == lunid) { + drv_found = 1; + break; + } + } + if (!drv_found) { + /* Deregister it from the OS, it's gone. */ + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + h->drv[i].busy_configuring = 1; + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + return_code = deregister_disk(h->gendisk[i], + &h->drv[i], 1); + h->drv[i].busy_configuring = 0; + } + } + + /* Compare controller drive array to driver's drive array. + * Check for updates in the drive information and any new drives + * on the controller due to ACU adding logical drives, or changing + * a logical drive's size, etc. Reregister any new/changed drives + */ + for (i = 0; i < num_luns; i++) { + int j; + + drv_found = 0; + + memcpy(&lunid, &ld_buff->LUN[i][0], 4); + lunid = le32_to_cpu(lunid); + + /* Find if the LUN is already in the drive array + * of the driver. If so then update its info + * if not in 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].raid_level != -1 && + h->drv[j].LunID == lunid) { + drv_index = j; + drv_found = 1; + break; + } + } + + /* check if the drive was found already in the array */ + if (!drv_found) { + drv_index = cciss_add_gendisk(h, lunid, 0); + if (drv_index == -1) + goto freeret; + } + cciss_update_drive_info(ctlr, drv_index, first_time); + } /* end for */ + +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 memory\n"); + h->busy_configuring = 0; + 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 preparation 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) +{ + int i; + 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) { + struct request_queue *q = disk->queue; + if (disk->flags & GENHD_FL_UP) + del_gendisk(disk); + if (q) { + blk_cleanup_queue(q); + /* Set drv->queue to NULL so that we do not try + * to call blk_start_queue on this queue in the + * interrupt handler + */ + drv->queue = NULL; + } + /* If clear_all is set then we are deleting the logical + * drive, not just refreshing its info. For drives + * other than disk 0 we will call put_disk. We do not + * do this for disk 0 as we need it to be able to + * configure the controller. + */ + if (clear_all){ + /* This isn't pretty, but we need to find the + * disk in our array and NULL our the pointer. + * This is so that we will call alloc_disk if + * this index is used again later. + */ + for (i=0; i < CISS_MAX_LUN; i++){ + if (h->gendisk[i] == disk) { + h->gendisk[i] = NULL; + break; + } + } + put_disk(disk); + } + } else { + set_capacity(disk, 0); + } + + --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_READ_CAPACITY_16: + c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; + c->Header.LUN.LogDev.Mode = 1; + c->Request.CDBLen = 16; + c->Request.Type.Attribute = ATTR_SIMPLE; + c->Request.Type.Direction = XFER_READ; + c->Request.Timeout = 0; + c->Request.CDB[0] = cmd; + c->Request.CDB[1] = 0x10; + c->Request.CDB[10] = (size >> 24) & 0xFF; + c->Request.CDB[11] = (size >> 16) & 0xFF; + c->Request.CDB[12] = (size >> 8) & 0xFF; + c->Request.CDB[13] = size & 0xFF; + 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 0: /* ABORT message */ + c->Request.CDBLen = 12; + c->Request.Type.Attribute = ATTR_SIMPLE; + c->Request.Type.Direction = XFER_WRITE; + c->Request.Timeout = 0; + c->Request.CDB[0] = cmd; /* abort */ + c->Request.CDB[1] = 0; /* abort a command */ + /* buff contains the tag of the command to abort */ + memcpy(&c->Request.CDB[4], buff, 8); + break; + case 1: /* RESET message */ + c->Request.CDBLen = 12; + c->Request.Type.Attribute = ATTR_SIMPLE; + c->Request.Type.Direction = XFER_WRITE; + c->Request.Timeout = 0; + memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); + c->Request.CDB[0] = cmd; /* reset */ + c->Request.CDB[1] = 0x04; /* reset a LUN */ + break; + 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_ONSTACK(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 */ + 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, sector_t total_size, + unsigned int block_size, + InquiryData_struct *inq_buff, + drive_info_struct *drv) +{ + int return_code; + unsigned long t; + + 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->heads = 255; + drv->sectors = 32; // Sectors per track + drv->cylinders = total_size + 1; + drv->raid_level = RAID_UNKNOWN; + } else { + 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]; + } + drv->block_size = block_size; + drv->nr_blocks = total_size + 1; + t = drv->heads * drv->sectors; + if (t > 1) { + sector_t real_size = total_size + 1; + unsigned long rem = sector_div(real_size, t); + if (rem) + real_size++; + drv->cylinders = real_size; + } + } 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, int withirq, sector_t *total_size, + unsigned int *block_size) +{ + ReadCapdata_struct *buf; + int return_code; + + buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); + if (!buf) { + printk(KERN_WARNING "cciss: out of memory\n"); + return; + } + + if (withirq) + return_code = sendcmd_withirq(CCISS_READ_CAPACITY, + ctlr, buf, sizeof(ReadCapdata_struct), + 1, logvol, 0, TYPE_CMD); + else + return_code = sendcmd(CCISS_READ_CAPACITY, + ctlr, buf, sizeof(ReadCapdata_struct), + 1, logvol, 0, NULL, TYPE_CMD); + if (return_code == IO_OK) { + *total_size = be32_to_cpu(*(__be32 *) buf->total_size); + *block_size = be32_to_cpu(*(__be32 *) buf->block_size); + } else { /* read capacity command failed */ + printk(KERN_WARNING "cciss: read capacity failed\n"); + *total_size = 0; + *block_size = BLOCK_SIZE; + } + if (*total_size != 0) + printk(KERN_INFO " blocks= %llu block_size= %d\n", + (unsigned long long)*total_size+1, *block_size); + kfree(buf); +} + +static void +cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) +{ + ReadCapdata_struct_16 *buf; + int return_code; + + buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); + if (!buf) { + printk(KERN_WARNING "cciss: out of memory\n"); + return; + } + + if (withirq) { + return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, + ctlr, buf, sizeof(ReadCapdata_struct_16), + 1, logvol, 0, TYPE_CMD); + } + else { + return_code = sendcmd(CCISS_READ_CAPACITY_16, + ctlr, buf, sizeof(ReadCapdata_struct_16), + 1, logvol, 0, NULL, TYPE_CMD); + } + if (return_code == IO_OK) { + *total_size = be64_to_cpu(*(__be64 *) buf->total_size); + *block_size = be32_to_cpu(*(__be32 *) buf->block_size); + } else { /* read capacity command failed */ + printk(KERN_WARNING "cciss: read capacity failed\n"); + *total_size = 0; + *block_size = BLOCK_SIZE; + } + printk(KERN_INFO " blocks= %llu block_size= %d\n", + (unsigned long long)*total_size+1, *block_size); + kfree(buf); +} + +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; + sector_t total_size; + 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; + + inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); + if (inq_buff == NULL) { + printk(KERN_WARNING "cciss: out of memory\n"); + return 1; + } + if (h->cciss_read == CCISS_READ_10) { + cciss_read_capacity(h->ctlr, logvol, 1, + &total_size, &block_size); + } else { + cciss_read_capacity_16(h->ctlr, logvol, 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(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; +} + +static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) +{ + /* We get in here if sendcmd() is polling for completions + and gets some command back that it wasn't expecting -- + something other than that which it just sent down. + Ordinarily, that shouldn't happen, but it can happen when + the scsi tape stuff gets into error handling mode, and + starts using sendcmd() to try to abort commands and + reset tape drives. In that case, sendcmd may pick up + completions of commands that were sent to logical drives + through the block i/o system, or cciss ioctls completing, etc. + In that case, we need to save those completions for later + processing by the interrupt handler. + */ + +#ifdef CONFIG_CISS_SCSI_TAPE + struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; + + /* If it's not the scsi tape stuff doing error handling, (abort */ + /* or reset) then we don't expect anything weird. */ + if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { +#endif + printk(KERN_WARNING "cciss cciss%d: SendCmd " + "Invalid command list address returned! (%lx)\n", + ctlr, complete); + /* not much we can do. */ +#ifdef CONFIG_CISS_SCSI_TAPE + return 1; + } + + /* We've sent down an abort or reset, but something else + has completed */ + if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { + /* Uh oh. No room to save it for later... */ + printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " + "reject list overflow, command lost!\n", ctlr); + return 1; + } + /* Save it for later */ + srl->complete[srl->ncompletions] = complete; + srl->ncompletions++; +#endif + return 0; +} + +/* + * 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, done = 0; + + 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 */ + /* unless we are in here doing error handling for the scsi */ + /* tape side of the driver. */ + 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); + done = 0; + do { + complete = pollcomplete(ctlr); + +#ifdef CCISS_DEBUG + printk(KERN_DEBUG "cciss: command completed\n"); +#endif /* CCISS_DEBUG */ + + if (complete == 1) { + printk(KERN_WARNING + "cciss cciss%d: SendCmd Timeout out, " + "No command list address returned!\n", ctlr); + status = IO_ERROR; + done = 1; + break; + } + + /* This will need to change for direct lookup completions */ + 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; + } + } else if (c->err_info->CommandStatus == + CMD_UNABORTABLE) { + printk(KERN_WARNING + "cciss%d: command could not be aborted.\n", + ctlr); + 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; + } + } + /* This will need changing for direct lookup completions */ + if (complete != c->busaddr) { + if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { + BUG(); /* we are pretty much hosed if we get here. */ + } + continue; + } else + done = 1; + } while (!done); + + 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); +#ifdef CONFIG_CISS_SCSI_TAPE + /* if we saved some commands for later, process them now. */ + if (info_p->scsi_rejects.ncompletions > 0) + do_cciss_intr(0, info_p); +#endif + 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 first 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); + } +} + +/* 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); +} + +static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, + unsigned int msg_byte, unsigned int host_byte, + unsigned int driver_byte) +{ + /* inverse of macros in scsi.h */ + return (scsi_status_byte & 0xff) | + ((msg_byte & 0xff) << 8) | + ((host_byte & 0xff) << 16) | + ((driver_byte & 0xff) << 24); +} + +static inline int evaluate_target_status(CommandList_struct *cmd) +{ + unsigned char sense_key; + unsigned char status_byte, msg_byte, host_byte, driver_byte; + int error_value; + + /* If we get in here, it means we got "target status", that is, scsi status */ + status_byte = cmd->err_info->ScsiStatus; + driver_byte = DRIVER_OK; + msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ + + if (blk_pc_request(cmd->rq)) + host_byte = DID_PASSTHROUGH; + else + host_byte = DID_OK; + + error_value = make_status_bytes(status_byte, msg_byte, + host_byte, driver_byte); + + if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { + if (!blk_pc_request(cmd->rq)) + printk(KERN_WARNING "cciss: cmd %p " + "has SCSI Status 0x%x\n", + cmd, cmd->err_info->ScsiStatus); + return error_value; + } + + /* check the sense key */ + sense_key = 0xf & cmd->err_info->SenseInfo[2]; + /* no status or recovered error */ + if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) + error_value = 0; + + if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ + if (error_value != 0) + printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" + " sense key = 0x%x\n", cmd, sense_key); + return error_value; + } + + /* SG_IO or similar, copy sense data back */ + if (cmd->rq->sense) { + if (cmd->rq->sense_len > cmd->err_info->SenseLen) + cmd->rq->sense_len = cmd->err_info->SenseLen; + memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, + cmd->rq->sense_len); + } else + cmd->rq->sense_len = 0; + + return error_value; +} + +/* checks the status of the job and calls complete buffers to mark all + * buffers for the completed job. Note that this function does not need + * to hold the hba/queue lock. + */ +static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, + int timeout) +{ + int retry_cmd = 0; + struct request *rq = cmd->rq; + + rq->errors = 0; + + if (timeout) + rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); + + if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ + goto after_error_processing; + + switch (cmd->err_info->CommandStatus) { + case CMD_TARGET_STATUS: + rq->errors = evaluate_target_status(cmd); + break; + case CMD_DATA_UNDERRUN: + if (blk_fs_request(cmd->rq)) { + printk(KERN_WARNING "cciss: cmd %p has" + " completed with data underrun " + "reported\n", cmd); + cmd->rq->data_len = cmd->err_info->ResidualCnt; + } + break; + case CMD_DATA_OVERRUN: + if (blk_fs_request(cmd->rq)) + 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); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); + break; + case CMD_PROTOCOL_ERR: + printk(KERN_WARNING "cciss: cmd %p has " + "protocol error \n", cmd); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); + break; + case CMD_HARDWARE_ERR: + printk(KERN_WARNING "cciss: cmd %p had " + " hardware error\n", cmd); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); + break; + case CMD_CONNECTION_LOST: + printk(KERN_WARNING "cciss: cmd %p had " + "connection lost\n", cmd); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); + break; + case CMD_ABORTED: + printk(KERN_WARNING "cciss: cmd %p was " + "aborted\n", cmd); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); + break; + case CMD_ABORT_FAILED: + printk(KERN_WARNING "cciss: cmd %p reports " + "abort failed\n", cmd); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); + 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); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); + break; + case CMD_TIMEOUT: + printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); + break; + default: + printk(KERN_WARNING "cciss: cmd %p returned " + "unknown status %x\n", cmd, + cmd->err_info->CommandStatus); + rq->errors = make_status_bytes(SAM_STAT_GOOD, + cmd->err_info->CommandStatus, DRIVER_OK, + blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); + } + +after_error_processing: + + /* We need to return this command */ + if (retry_cmd) { + resend_cciss_cmd(h, cmd); + return; + } + cmd->rq->completion_data = cmd; + blk_complete_request(cmd->rq); +} + +/* + * Get a request and submit it to the controller. + */ +static void do_cciss_request(struct request_queue *q) +{ + ctlr_info_t *h = q->queuedata; + CommandList_struct *c; + sector_t start_blk; + int 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; + + BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); + + 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) ? h->cciss_read : h->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 */ + + sg_init_table(tmp_sg, MAXSGENTRIES); + 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, sg_page(&tmp_sg[i]), + 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 %lu sectors in %d segments\n", + creq->nr_sectors, seg); +#endif /* CCISS_DEBUG */ + + c->Header.SGList = c->Header.SGTotal = seg; + if (likely(blk_fs_request(creq))) { + if(h->cciss_read == CCISS_READ_10) { + 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; + } else { + u32 upper32 = upper_32_bits(start_blk); + + c->Request.CDBLen = 16; + c->Request.CDB[1]= 0; + c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB + c->Request.CDB[3]= (upper32 >> 16) & 0xff; + c->Request.CDB[4]= (upper32 >> 8) & 0xff; + c->Request.CDB[5]= upper32 & 0xff; + c->Request.CDB[6]= (start_blk >> 24) & 0xff; + c->Request.CDB[7]= (start_blk >> 16) & 0xff; + c->Request.CDB[8]= (start_blk >> 8) & 0xff; + c->Request.CDB[9]= start_blk & 0xff; + c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; + c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; + c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; + c->Request.CDB[13]= creq->nr_sectors & 0xff; + c->Request.CDB[14] = c->Request.CDB[15] = 0; + } + } else if (blk_pc_request(creq)) { + c->Request.CDBLen = creq->cmd_len; + memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); + } else { + printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); + BUG(); + } + + 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 inline unsigned long get_next_completion(ctlr_info_t *h) +{ +#ifdef CONFIG_CISS_SCSI_TAPE + /* Any rejects from sendcmd() lying around? Process them first */ + if (h->scsi_rejects.ncompletions == 0) + return h->access.command_completed(h); + else { + struct sendcmd_reject_list *srl; + int n; + srl = &h->scsi_rejects; + n = --srl->ncompletions; + /* printk("cciss%d: processing saved reject\n", h->ctlr); */ + printk("p"); + return srl->complete[n]; + } +#else + return h->access.command_completed(h); +#endif +} + +static inline int interrupt_pending(ctlr_info_t *h) +{ +#ifdef CONFIG_CISS_SCSI_TAPE + return (h->access.intr_pending(h) + || (h->scsi_rejects.ncompletions > 0)); +#else + return h->access.intr_pending(h); +#endif +} + +static inline long interrupt_not_for_us(ctlr_info_t *h) +{ +#ifdef CONFIG_CISS_SCSI_TAPE + return (((h->access.intr_pending(h) == 0) || + (h->interrupts_enabled == 0)) + && (h->scsi_rejects.ncompletions == 0)); +#else + return (((h->access.intr_pending(h) == 0) || + (h->interrupts_enabled == 0))); +#endif +} + +static irqreturn_t do_cciss_intr(int irq, void *dev_id) +{ + ctlr_info_t *h = dev_id; + CommandList_struct *c; + unsigned long flags; + __u32 a, a1, a2; + + if (interrupt_not_for_us(h)) + 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 (interrupt_pending(h)) { + while ((a = get_next_completion(h)) != FIFO_EMPTY) { + a1 = a; + if ((a & 0x04)) { + a2 = (a >> 3); + if (a2 >= h->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 ignored\n", + 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; + } + } + } + + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + return IRQ_HANDLED; +} + +/* + * We cannot read the structure directly, for portability 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(" Coalesce Interrupt Delay = 0x%x\n", + readl(&(tb->HostWrite.CoalIntDelay))); + printk(" Coalesce 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 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; +} + +/* If MSI/MSI-X is supported by the kernel we will try to enable it on + * controllers that are capable. If not, we use IO-APIC mode. + */ + +static void __devinit cciss_interrupt_mode(ctlr_info_t *c, + struct pci_dev *pdev, __u32 board_id) +{ +#ifdef CONFIG_PCI_MSI + int err; + struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, + {0, 2}, {0, 3} + }; + + /* Some boards advertise MSI but don't really support it */ + if ((board_id == 0x40700E11) || + (board_id == 0x40800E11) || + (board_id == 0x40820E11) || (board_id == 0x40830E11)) + goto default_int_mode; + + if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { + err = pci_enable_msix(pdev, cciss_msix_entries, 4); + if (!err) { + c->intr[0] = cciss_msix_entries[0].vector; + c->intr[1] = cciss_msix_entries[1].vector; + c->intr[2] = cciss_msix_entries[2].vector; + c->intr[3] = cciss_msix_entries[3].vector; + c->msix_vector = 1; + return; + } + if (err > 0) { + printk(KERN_WARNING "cciss: only %d MSI-X vectors " + "available\n", err); + goto default_int_mode; + } else { + printk(KERN_WARNING "cciss: MSI-X init failed %d\n", + err); + goto default_int_mode; + } + } + if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { + if (!pci_enable_msi(pdev)) { + c->msi_vector = 1; + } else { + printk(KERN_WARNING "cciss: MSI init failed\n"); + } + } +default_int_mode: +#endif /* CONFIG_PCI_MSI */ + /* if we get here we're going to use the default interrupt mode */ + c->intr[SIMPLE_MODE_INT] = pdev->irq; + return; +} + +static int __devinit 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, err; + + /* 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 -ENODEV; + } + + err = pci_enable_device(pdev); + if (err) { + printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); + return err; + } + + err = pci_request_regions(pdev, "cciss"); + if (err) { + printk(KERN_ERR "cciss: Cannot obtain PCI resources, " + "aborting\n"); + return err; + } + + subsystem_vendor_id = pdev->subsystem_vendor; + subsystem_device_id = pdev->subsystem_device; + board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | + subsystem_vendor_id); + +#ifdef CCISS_DEBUG + printk("command = %x\n", command); + printk("irq = %x\n", pdev->irq); + printk("board_id = %x\n", board_id); +#endif /* CCISS_DEBUG */ + +/* If the kernel supports MSI/MSI-X we will try to enable that functionality, + * else we use the IO-APIC interrupt assigned to us by system ROM. + */ + cciss_interrupt_mode(c, pdev, board_id); + + /* + * 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 = %lx\n", c->paddr); +#endif /* CCISS_DEBUG */ + c->vaddr = remap_pci_mem(c->paddr, 0x250); + + /* 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"); + err = -ENODEV; + goto err_out_free_res; + } + + /* 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 = %llx\n", + (unsigned long long)cfg_base_addr_index); +#endif /* CCISS_DEBUG */ + if (cfg_base_addr_index == -1) { + printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); + err = -ENODEV; + goto err_out_free_res; + } + + cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); +#ifdef CCISS_DEBUG + printk("cfg offset = %llx\n", (unsigned long long)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 */ + + /* Some controllers support Zero Memory Raid (ZMR). + * When configured in ZMR mode the number of supported + * commands drops to 64. So instead of just setting an + * arbitrary value we make the driver a little smarter. + * We read the config table to tell us how many commands + * are supported on the controller then subtract 4 to + * leave a little room for ioctl calls. + */ + c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); + for (i = 0; i < ARRAY_SIZE(products); i++) { + if (board_id == products[i].board_id) { + c->product_name = products[i].product_name; + c->access = *(products[i].access); + c->nr_cmds = c->max_commands - 4; + break; + } + } + 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"); + err = -ENODEV; + goto err_out_free_res; + } + /* We didn't find the controller in our list. We know the + * signature is valid. If it's an HP device let's try to + * bind to the device and fire it up. Otherwise we bail. + */ + if (i == ARRAY_SIZE(products)) { + if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { + c->product_name = products[i-1].product_name; + c->access = *(products[i-1].access); + c->nr_cmds = c->max_commands - 4; + printk(KERN_WARNING "cciss: This is an unknown " + "Smart Array controller.\n" + "cciss: Please update to the latest driver " + "available from www.hp.com.\n"); + } else { + printk(KERN_WARNING "cciss: Sorry, I don't know how" + " to access the Smart Array controller %08lx\n" + , (unsigned long)board_id); + err = -ENODEV; + goto err_out_free_res; + } + } +#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 + + /* Disabling DMA prefetch and refetch for the P600. + * An ASIC bug may result in accesses to invalid memory addresses. + * We've disabled prefetch for some time now. Testing with XEN + * kernels revealed a bug in the refetch if dom0 resides on a P600. + */ + if(board_id == 0x3225103C) { + __u32 dma_prefetch; + __u32 dma_refetch; + dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); + dma_prefetch |= 0x8000; + writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); + pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); + dma_refetch |= 0x1; + pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); + } + +#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"); + err = -ENODEV; + goto err_out_free_res; + } + return 0; + +err_out_free_res: + /* + * Deliberately omit pci_disable_device(): it does something nasty to + * Smart Array controllers that pci_enable_device does not undo + */ + pci_release_regions(pdev); + return err; +} + +/* 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) +{ + int i; + + for (i = 0; i < MAX_CTLR; i++) { + if (!hba[i]) { + ctlr_info_t *p; + + p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); + if (!p) + goto Enomem; + hba[i] = p; + return i; + } + } + printk(KERN_WARNING "cciss: This driver supports a maximum" + " of %d controllers.\n", MAX_CTLR); + return -1; +Enomem: + printk(KERN_ERR "cciss: out of memory.\n"); + return -1; +} + +static void free_hba(int i) +{ + ctlr_info_t *p = hba[i]; + int n; + + hba[i] = NULL; + for (n = 0; n < CISS_MAX_LUN; 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) +{ + int i; + int j = 0; + int rc; + int dac, return_code; + InquiryData_struct *inq_buff = NULL; + + 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)) + dac = 1; + else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) + dac = 0; + else { + printk(KERN_ERR "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 = COMPAQ_CISS_MAJOR + 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[SIMPLE_MODE_INT], do_cciss_intr, + IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { + printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", + hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); + goto clean2; + } + + printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", + hba[i]->devname, pdev->device, pci_name(pdev), + hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); + + hba[i]->cmd_pool_bits = + kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) + * sizeof(unsigned long), GFP_KERNEL); + hba[i]->cmd_pool = (CommandList_struct *) + pci_alloc_consistent(hba[i]->pdev, + hba[i]->nr_cmds * sizeof(CommandList_struct), + &(hba[i]->cmd_pool_dhandle)); + hba[i]->errinfo_pool = (ErrorInfo_struct *) + pci_alloc_consistent(hba[i]->pdev, + hba[i]->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; + } +#ifdef CONFIG_CISS_SCSI_TAPE + hba[i]->scsi_rejects.complete = + kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * + (hba[i]->nr_cmds + 5), GFP_KERNEL); + if (hba[i]->scsi_rejects.complete == NULL) { + printk(KERN_ERR "cciss: out of memory"); + goto clean4; + } +#endif + 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, + DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) + * sizeof(unsigned long)); + + hba[i]->num_luns = 0; + hba[i]->highest_lun = -1; + for (j = 0; j < CISS_MAX_LUN; j++) { + hba[i]->drv[j].raid_level = -1; + hba[i]->drv[j].queue = NULL; + hba[i]->gendisk[j] = NULL; + } + + cciss_scsi_setup(i); + + /* Turn the interrupts on so we can service requests */ + hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); + + /* Get the firmware version */ + inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); + if (inq_buff == NULL) { + printk(KERN_ERR "cciss: out of memory\n"); + goto clean4; + } + + return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff, + sizeof(InquiryData_struct), 0, 0 , 0, TYPE_CMD); + if (return_code == IO_OK) { + hba[i]->firm_ver[0] = inq_buff->data_byte[32]; + hba[i]->firm_ver[1] = inq_buff->data_byte[33]; + hba[i]->firm_ver[2] = inq_buff->data_byte[34]; + hba[i]->firm_ver[3] = inq_buff->data_byte[35]; + } else { /* send command failed */ + printk(KERN_WARNING "cciss: unable to determine firmware" + " version of controller\n"); + } + + cciss_procinit(i); + + hba[i]->cciss_max_sectors = 2048; + + hba[i]->busy_initializing = 0; + + rebuild_lun_table(hba[i], 1); + return 1; + +clean4: + kfree(inq_buff); +#ifdef CONFIG_CISS_SCSI_TAPE + kfree(hba[i]->scsi_rejects.complete); +#endif + kfree(hba[i]->cmd_pool_bits); + if (hba[i]->cmd_pool) + pci_free_consistent(hba[i]->pdev, + hba[i]->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, + hba[i]->nr_cmds * sizeof(ErrorInfo_struct), + hba[i]->errinfo_pool, + hba[i]->errinfo_pool_dhandle); + free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); +clean2: + unregister_blkdev(hba[i]->major, hba[i]->devname); +clean1: + hba[i]->busy_initializing = 0; + /* cleanup any queues that may have been initialized */ + for (j=0; j <= hba[i]->highest_lun; j++){ + drive_info_struct *drv = &(hba[i]->drv[j]); + if (drv->queue) + blk_cleanup_queue(drv->queue); + } + /* + * Deliberately omit pci_disable_device(): it does something nasty to + * Smart Array controllers that pci_enable_device does not undo + */ + pci_release_regions(pdev); + pci_set_drvdata(pdev, NULL); + free_hba(i); + return -1; +} + +static void cciss_shutdown(struct pci_dev *pdev) +{ + ctlr_info_t *tmp_ptr; + int i; + char flush_buf[4]; + int return_code; + + tmp_ptr = pci_get_drvdata(pdev); + if (tmp_ptr == NULL) + return; + i = tmp_ptr->ctlr; + if (hba[i] == NULL) + 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_INFO "Completed flushing cache on controller %d\n", i); + } else { + printk(KERN_WARNING "Error flushing cache on controller %d\n", i); + } + free_irq(hba[i]->intr[2], hba[i]); +} + +static void __devexit cciss_remove_one(struct pci_dev *pdev) +{ + ctlr_info_t *tmp_ptr; + int i, j; + + 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; + } + + remove_proc_entry(hba[i]->devname, proc_cciss); + unregister_blkdev(hba[i]->major, hba[i]->devname); + + /* remove it from the disk list */ + for (j = 0; j < CISS_MAX_LUN; j++) { + struct gendisk *disk = hba[i]->gendisk[j]; + if (disk) { + struct request_queue *q = disk->queue; + + if (disk->flags & GENHD_FL_UP) + del_gendisk(disk); + if (q) + blk_cleanup_queue(q); + } + } + +#ifdef CONFIG_CISS_SCSI_TAPE + cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ +#endif + + cciss_shutdown(pdev); + +#ifdef CONFIG_PCI_MSI + if (hba[i]->msix_vector) + pci_disable_msix(hba[i]->pdev); + else if (hba[i]->msi_vector) + pci_disable_msi(hba[i]->pdev); +#endif /* CONFIG_PCI_MSI */ + + iounmap(hba[i]->vaddr); + + pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), + hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); + pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), + hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); + kfree(hba[i]->cmd_pool_bits); +#ifdef CONFIG_CISS_SCSI_TAPE + kfree(hba[i]->scsi_rejects.complete); +#endif + /* + * Deliberately omit pci_disable_device(): it does something nasty to + * Smart Array controllers that pci_enable_device does not undo + */ + pci_release_regions(pdev); + pci_set_drvdata(pdev, NULL); + 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 */ + .shutdown = cciss_shutdown, +}; + +/* + * 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_register_driver(&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("driver/cciss", NULL); +} + +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); |
