/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 /* 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; 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 bl