/* * Disk Array driver for Compaq SMART2 Controllers * Copyright 2000 Compaq Computer Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Questions/Comments/Bugfixes to arrays@compaq.com * */ #include /* CONFIG_PROC_FS */ #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 "Compaq CISS Driver (v 2.4.0)" #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,4,0) /* Embedded module documentation macros - see modules.h */ MODULE_AUTHOR("Charles M. White III - Compaq Computer Corporation"); MODULE_DESCRIPTION("Driver for Compaq Smart Array Controller 5300"); #include "cciss_cmd.h" #include "cciss.h" #include #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type)) /* board_id = Subsystem Device ID & Vendor ID * product = Marketing Name for the board * access = Address of the struct of function pointers */ static struct board_type products[] = { { 0x40700E11, "Smart Array 5300", &SA5_access }, }; /* How long to wait (in millesconds) for board to go into simple mode */ #define MAX_CONFIG_WAIT 1000 #define READ_AHEAD 128 #define NR_CMDS 128 /* #commands that can be outstanding */ #define MAX_CTLR 8 static int nr_ctlr; static ctlr_info_t *hba[MAX_CTLR]; static struct proc_dir_entry *proc_cciss; static void do_cciss_request(int i); /* * This is a hack. This driver eats a major number for each controller, and * sets blkdev[xxx].request_fn to each one of these so the real request * function knows what controller its working with. */ #define DO_CCISS_REQUEST(x) { do_cciss_request(x); } static void do_cciss_request0(request_queue_t * q) DO_CCISS_REQUEST(0); static void do_cciss_request1(request_queue_t * q) DO_CCISS_REQUEST(1); static void do_cciss_request2(request_queue_t * q) DO_CCISS_REQUEST(2); static void do_cciss_request3(request_queue_t * q) DO_CCISS_REQUEST(3); static void do_cciss_request4(request_queue_t * q) DO_CCISS_REQUEST(4); static void do_cciss_request5(request_queue_t * q) DO_CCISS_REQUEST(5); static void do_cciss_request6(request_queue_t * q) DO_CCISS_REQUEST(6); static void do_cciss_request7(request_queue_t * q) DO_CCISS_REQUEST(7); static int cciss_open(struct inode *inode, struct file *filep); static int cciss_release(struct inode *inode, struct file *filep); static int cciss_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg); static int revalidate_allvol(kdev_t dev); static int revalidate_logvol(kdev_t dev, int maxusage); static int frevalidate_logvol(kdev_t dev); static void cciss_getgeometry(int cntl_num); static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c); static void start_io( ctlr_info_t *h); #ifdef CONFIG_PROC_FS static int cciss_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data); static void cciss_procinit(int i); #else static int cciss_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data) { return 0;} static void cciss_procinit(int i) {} #endif /* CONFIG_PROC_FS */ static struct block_device_operations cciss_fops = { open: cciss_open, release: cciss_release, ioctl: cciss_ioctl, revalidate: frevalidate_logvol, }; /* * Report information about this controller. */ #ifdef CONFIG_PROC_FS static int cciss_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data) { off_t pos = 0; off_t len = 0; int size, i, ctlr; ctlr_info_t *h = (ctlr_info_t*)data; drive_info_struct *drv; ctlr = h->ctlr; size = sprintf(buffer, "%s: Compaq %s Controller\n" " Board ID: %08lx\n" " Firmware Version: %c%c%c%c\n" " Memory Address: %08lx\n" " IRQ: 0x%x\n" " Logical drives: %d\n" " Current Q depth: %d\n" " Current # commands on controller %d\n" " Max Q depth since init: %d\n" " Max # commands on controller since init: %d\n" " Max SG entries since init: %d\n\n", h->devname, h->product_name, (unsigned long)h->board_id, h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3], (unsigned long)h->vaddr, (unsigned int)h->intr, h->num_luns, h->Qdepth, h->commands_outstanding, h->maxQsinceinit, h->max_outstanding, h->maxSG); pos += size; len += size; for(i=0; inum_luns; i++) { drv = &h->drv[i]; size = sprintf(buffer+len, "cciss/c%dd%d: blksz=%d nr_blocks=%d\n", ctlr, i, drv->block_size, drv->nr_blocks); pos += size; len += size; } size = sprintf(buffer+len, "nr_allocs = %d\nnr_frees = %d\n", h->nr_allocs, h->nr_frees); pos += size; len += size; *eof = 1; *start = buffer+offset; len -= offset; if (len>length) len = length; return len; } /* * Get us a file in /proc/cciss that says something about each controller. * Create /proc/cciss if it doesn't exist yet. */ static void __init cciss_procinit(int i) { if (proc_cciss == NULL) { proc_cciss = proc_mkdir("driver/cciss", NULL); if (!proc_cciss) return; } create_proc_read_entry(hba[i]->devname, 0, proc_cciss, cciss_proc_get_info, 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 a NULL pointer. * cmd_free() MUST be called with a NULL pointer if cmd_alloc was. */ static CommandList_struct * cmd_alloc(ctlr_info_t *h) { CommandList_struct *c; int i; u64bit temp64; if (h == NULL) { c = (CommandList_struct *)kmalloc(sizeof(CommandList_struct), GFP_KERNEL); if(c==NULL) return NULL; memset(c, 0, sizeof(CommandList_struct)); c->err_info = (ErrorInfo_struct *)kmalloc( sizeof(ErrorInfo_struct), GFP_KERNEL); if (c->err_info == NULL) { kfree(c); return NULL; } memset(c->err_info, 0, sizeof(ErrorInfo_struct)); } else /* get it out of the controllers pool */ { do { i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS); if (i == NR_CMDS) return NULL; } while(test_and_set_bit(i%32, h->cmd_pool_bits+(i/32)) != 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)); c->err_info = h->errinfo_pool + i; memset(c->err_info, 0, sizeof(ErrorInfo_struct)); h->nr_allocs++; } temp64.val = (__u64) virt_to_bus(c->err_info); c->ErrDesc.Addr.lower = temp64.val32.lower; c->ErrDesc.Addr.upper = temp64.val32.upper; c->ErrDesc.Len = sizeof(ErrorInfo_struct); c->busaddr = virt_to_bus(c); 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 i; if( h == NULL) { kfree(c->err_info); kfree(c); } else { i = c - h->cmd_pool; clear_bit(i%32, h->cmd_pool_bits+(i/32)); h->nr_frees++; } } /* * fills in the disk information. */ static void cciss_geninit( int ctlr) { drive_info_struct *drv; int i,j; /* Loop through each real device */ hba[ctlr]->gendisk.nr_real = 0; for(i=0; i< NWD; i++) { drv = &(hba[ctlr]->drv[i]); if( !(drv->nr_blocks)) continue; hba[ctlr]->hd[i << NWD_SHIFT].nr_sects = hba[ctlr]->sizes[i << NWD_SHIFT] = drv->nr_blocks; /* for each partition */ for(j=0; jblocksizes[(i<hardsizes[ (i<block_size; } hba[ctlr]->gendisk.nr_real++; } } /* * Open. Make sure the device is really there. */ static int cciss_open(struct inode *inode, struct file *filep) { int ctlr = MAJOR(inode->i_rdev) - MAJOR_NR; int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT; #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss_open %x (%x:%x)\n", inode->i_rdev, ctlr, dsk); #endif /* CCISS_DEBUG */ if (ctlr > MAX_CTLR || hba[ctlr] == NULL) return -ENXIO; if (!suser() && hba[ctlr]->sizes[ MINOR(inode->i_rdev)] == 0) return -ENXIO; /* * Root is allowed to open raw volume zero even if its not configured * so array config can still work. 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 (suser() && (hba[ctlr]->sizes[MINOR(inode->i_rdev)] == 0) && (MINOR(inode->i_rdev)!= 0)) return -ENXIO; hba[ctlr]->drv[dsk].usage_count++; hba[ctlr]->usage_count++; MOD_INC_USE_COUNT; return 0; } /* * Close. Sync first. */ static int cciss_release(struct inode *inode, struct file *filep) { int ctlr = MAJOR(inode->i_rdev) - MAJOR_NR; int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT; #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss_release %x (%x:%x)\n", inode->i_rdev, ctlr, dsk); #endif /* CCISS_DEBUG */ /* fsync_dev(inode->i_rdev); */ hba[ctlr]->drv[dsk].usage_count--; hba[ctlr]->usage_count--; MOD_DEC_USE_COUNT; return 0; } /* * ioctl */ static int cciss_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg) { int ctlr = MAJOR(inode->i_rdev) - MAJOR_NR; int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT; int diskinfo[4]; struct hd_geometry *geo = (struct hd_geometry *)arg; #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); #endif /* CCISS_DEBUG */ switch(cmd) { case HDIO_GETGEO: if (hba[ctlr]->drv[dsk].cylinders) { diskinfo[0] = hba[ctlr]->drv[dsk].heads; diskinfo[1] = hba[ctlr]->drv[dsk].sectors; diskinfo[2] = hba[ctlr]->drv[dsk].cylinders; } else { diskinfo[0] = 0xff; diskinfo[1] = 0x3f; diskinfo[2] = hba[ctlr]->drv[dsk].nr_blocks / (0xff*0x3f); } put_user(diskinfo[0], &geo->heads); put_user(diskinfo[1], &geo->sectors); put_user(diskinfo[2], &geo->cylinders); put_user(hba[ctlr]->hd[MINOR(inode->i_rdev)].start_sect, &geo->start); return 0; case BLKGETSIZE: if (!arg) return -EINVAL; put_user(hba[ctlr]->hd[MINOR(inode->i_rdev)].nr_sects, (long*)arg); return 0; case BLKRRPART: return revalidate_logvol(inode->i_rdev, 1); case BLKFLSBUF: case BLKROSET: case BLKROGET: case BLKRASET: case BLKRAGET: case BLKPG: return( blk_ioctl(inode->i_rdev, cmd, arg)); case CCISS_GETPCIINFO: { cciss_pci_info_struct pciinfo; if (!arg) return -EINVAL; pciinfo.bus = hba[ctlr]->pci_bus; pciinfo.dev_fn = hba[ctlr]->pci_dev_fn; pciinfo.board_id = hba[ctlr]->board_id; if (copy_to_user((void *) arg, &pciinfo, sizeof( cciss_pci_info_struct ))) return -EFAULT; return(0); } case CCISS_GETINTINFO: { cciss_coalint_struct intinfo; ctlr_info_t *c = hba[ctlr]; if (!arg) return -EINVAL; intinfo.delay = readl(&c->cfgtable->HostWrite.CoalIntDelay); intinfo.count = readl(&c->cfgtable->HostWrite.CoalIntCount); if (copy_to_user((void *) arg, &intinfo, sizeof( cciss_coalint_struct ))) return -EFAULT; return(0); } case CCISS_SETINTINFO: { cciss_coalint_struct intinfo; ctlr_info_t *c = hba[ctlr]; unsigned long flags; int i; if (!arg) return -EINVAL; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (copy_from_user(&intinfo, (void *) arg, 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(&io_request_lock, flags); /* Can only safely update if no commands outstanding */ if (c->commands_outstanding > 0 ) { // printk("cciss_ioctl: cannot change coalasing " // "%d commands outstanding on controller\n", // c->commands_outstanding); spin_unlock_irqrestore(&io_request_lock, flags); return(-EINVAL); } /* Update the field, and then ring the doorbell */ writel( intinfo.delay, &(c->cfgtable->HostWrite.CoalIntDelay)); writel( intinfo.count, &(c->cfgtable->HostWrite.CoalIntCount)); writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); for(i=0;ivaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) break; /* delay and try again */ udelay(1000); } spin_unlock_irqrestore(&io_request_lock, flags); if (i >= MAX_CONFIG_WAIT) return( -EFAULT); return(0); } case CCISS_GETNODENAME: { NodeName_type NodeName; ctlr_info_t *c = hba[ctlr]; int i; if (!arg) return -EINVAL; for(i=0;i<16;i++) NodeName[i] = readb(&c->cfgtable->ServerName[i]); if (copy_to_user((void *) arg, NodeName, sizeof( NodeName_type))) return -EFAULT; return(0); } case CCISS_SETNODENAME: { NodeName_type NodeName; ctlr_info_t *c = hba[ctlr]; unsigned long flags; int i; if (!arg) return -EINVAL; if (!capable(CAP_SYS_ADMIN)) return -EPERM; if (copy_from_user(NodeName, (void *) arg, sizeof( NodeName_type))) return -EFAULT; spin_lock_irqsave(&io_request_lock, flags); /* Update the field, and then ring the doorbell */ for(i=0;i<16;i++) writeb( NodeName[i], &c->cfgtable->ServerName[i]); writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); for(i=0;ivaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) break; /* delay and try again */ udelay(1000); } spin_unlock_irqrestore(&io_request_lock, flags); if (i >= MAX_CONFIG_WAIT) return( -EFAULT); return(0); } case CCISS_GETHEARTBEAT: { Heartbeat_type heartbeat; ctlr_info_t *c = hba[ctlr]; if (!arg) return -EINVAL; heartbeat = readl(&c->cfgtable->HeartBeat); if (copy_to_user((void *) arg, &heartbeat, sizeof( Heartbeat_type))) return -EFAULT; return(0); } case CCISS_GETBUSTYPES: { BusTypes_type BusTypes; ctlr_info_t *c = hba[ctlr]; if (!arg) return -EINVAL; BusTypes = readl(&c->cfgtable->BusTypes); if (copy_to_user((void *) arg, &BusTypes, sizeof( BusTypes_type) )) return -EFAULT; return(0); } case CCISS_GETFIRMVER: { FirmwareVer_type firmware; if (!arg) return -EINVAL; memcpy(firmware, hba[ctlr]->firm_ver, 4); if (copy_to_user((void *) arg, firmware, sizeof( FirmwareVer_type))) return -EFAULT; return(0); } case CCISS_GETDRIVVER: { DriverVer_type DriverVer = DRIVER_VERSION; if (!arg) return -EINVAL; if (copy_to_user((void *) arg, &DriverVer, sizeof( DriverVer_type) )) return -EFAULT; return(0); } case CCISS_REVALIDVOLS: return( revalidate_allvol(inode->i_rdev)); case CCISS_PASSTHRU: { IOCTL_Command_struct iocommand; ctlr_info_t *h = hba[ctlr]; CommandList_struct *c; char *buff = NULL; u64bit temp64; unsigned long flags; if (!arg) return -EINVAL; if (!capable(CAP_SYS_RAWIO)) return -EPERM; if (copy_from_user(&iocommand, (void *) arg, sizeof( IOCTL_Command_struct) )) return -EFAULT; if((iocommand.buf_size < 1) && (iocommand.Request.Type.Direction != XFER_NONE)) { return -EINVAL; } /* Check kmalloc limits */ if(iocommand.buf_size > 128000) return -EINVAL; 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)) return -EFAULT; } if ((c = cmd_alloc(NULL)) == NULL) { if(buff!=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 = (__u64) virt_to_bus(buff); 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 } /* Put the request on the tail of the request queue */ spin_lock_irqsave(&io_request_lock, flags); addQ(&h->reqQ, c); h->Qdepth++; start_io(h); spin_unlock_irqrestore(&io_request_lock, flags); /* Wait for completion */ while(c->cmd_type != CMD_IOCTL_DONE) schedule_timeout(1); /* Copy the error information out */ iocommand.error_info = *(c->err_info); if ( copy_to_user((void *) arg, &iocommand, sizeof( IOCTL_Command_struct) ) ) { cmd_free(NULL, c); if (buff != NULL) kfree(buff); 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)) { cmd_free(NULL, c); kfree(buff); } } cmd_free(NULL, c); if (buff != NULL) kfree(buff); return(0); } default: return -EBADRQC; } } /* Borrowed and adapted from sd.c */ static int revalidate_logvol(kdev_t dev, int maxusage) { int ctlr, target; struct gendisk *gdev; unsigned long flags; int max_p; int start; int i; target = MINOR(dev) >> NWD_SHIFT; ctlr = MAJOR(dev) - MAJOR_NR; gdev = &(hba[ctlr]->gendisk); spin_lock_irqsave(&io_request_lock, flags); if (hba[ctlr]->drv[target].usage_count > maxusage) { spin_unlock_irqrestore(&io_request_lock, flags); printk(KERN_WARNING "cpqarray: Device busy for " "revalidation (usage=%d)\n", hba[ctlr]->drv[target].usage_count); return -EBUSY; } hba[ctlr]->drv[target].usage_count++; spin_unlock_irqrestore(&io_request_lock, flags); max_p = gdev->max_p; start = target << gdev->minor_shift; for(i=max_p; i>=0; i--) { int minor = start+i; kdev_t devi = MKDEV(MAJOR_NR + ctlr, minor); struct super_block *sb = get_super(devi); sync_dev(devi); if (sb) invalidate_inodes(sb); invalidate_buffers(devi); gdev->part[minor].start_sect = 0; gdev->part[minor].nr_sects = 0; /* reset the blocksize so we can read the partition table */ blksize_size[MAJOR_NR+ctlr][minor] = 1024; } /* setup partitions per disk */ grok_partitions(gdev, target, MAX_PART, hba[ctlr]->drv[target].nr_blocks); hba[ctlr]->drv[target].usage_count--; return 0; } static int frevalidate_logvol(kdev_t dev) { #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss: frevalidate has been called\n"); #endif /* CCISS_DEBUG */ return revalidate_logvol(dev, 0); } /* * revalidate_allvol is for online array config utilities. After a * utility reconfigures the drives in the array, it can use this function * (through an ioctl) to make the driver zap any previous disk structs for * that controller and get new ones. * * Right now I'm using the getgeometry() function to do this, but this * function should probably be finer grained and allow you to revalidate one * particualar logical volume (instead of all of them on a particular * controller). */ static int revalidate_allvol(kdev_t dev) { int ctlr, i; unsigned long flags; ctlr = MAJOR(dev) - MAJOR_NR; if (MINOR(dev) != 0) return -ENXIO; spin_lock_irqsave(&io_request_lock, flags); if (hba[ctlr]->usage_count > 1) { spin_unlock_irqrestore(&io_request_lock, flags); printk(KERN_WARNING "cciss: Device busy for volume" " revalidation (usage=%d)\n", hba[ctlr]->usage_count); return -EBUSY; } spin_unlock_irqrestore(&io_request_lock, flags); hba[ctlr]->usage_count++; /* * Set the partition and block size structures for all volumes * on this controller to zero. We will reread all of this data */ memset(hba[ctlr]->hd, 0, sizeof(struct hd_struct) * 256); memset(hba[ctlr]->sizes, 0, sizeof(int) * 256); memset(hba[ctlr]->blocksizes, 0, sizeof(int) * 256); memset(hba[ctlr]->hardsizes, 0, sizeof(int) * 256); memset(hba[ctlr]->drv, 0, sizeof(drive_info_struct) * CISS_MAX_LUN); hba[ctlr]->gendisk.nr_real = 0; /* * Tell the array controller not to give us any interupts while * we check the new geometry. Then turn interrupts back on when * we're done. */ hba[ctlr]->access.set_intr_mask(hba[ctlr], CCISS_INTR_OFF); cciss_getgeometry(ctlr); hba[ctlr]->access.set_intr_mask(hba[ctlr], CCISS_INTR_ON); cciss_geninit(ctlr); for(i=0; isizes[ i<usage_count--; return 0; } /* * Wait polling for a command to complete. * The memory mapped FIFO is polled for the completion. * Used only at init time, interrupts disabled. */ static unsigned long pollcomplete(int ctlr) { unsigned long done; int i; /* Wait (up to 2 seconds) for a command to complete */ for (i = 200000; i > 0; i--) { done = hba[ctlr]->access.command_completed(hba[ctlr]); if (done == FIFO_EMPTY) { udelay(10); /* a short fixed delay */ } else return (done); } /* Invalid address to tell caller we ran out of time */ return 1; } /* * Send a command to the controller, and wait for it to complete. * Only used at init time. */ static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, unsigned int log_unit, __u8 page_code ) { CommandList_struct *c; int i; unsigned long complete; ctlr_info_t *info_p= hba[ctlr]; u64bit temp64; c = cmd_alloc(info_p); if (c == NULL) { printk(KERN_WARNING "cciss: unable to get memory"); return(IO_ERROR); } // Fill in Command Header c->Header.ReplyQueue = 0; // unused in simple mode if( buff != NULL) // 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.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag // Fill in Request block 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 mode = 1 target = LUNID */ if(use_unit_num != 0) { c->Header.LUN.LogDev.VolId= hba[ctlr]->drv[log_unit].LunID; c->Header.LUN.LogDev.Mode = 1; } /* 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.Type = TYPE_CMD; // It is a command. c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; // Read c->Request.Timeout = 0; // Don't time out c->Request.CDB[0] = CISS_INQUIRY; c->Request.CDB[4] = size & 0xFF; break; case CISS_REPORT_LOG: /* Talking to controller so It's a physical command mode = 00 target = 0. So we have nothing to write. */ c->Request.CDBLen = 12; c->Request.Type.Type = TYPE_CMD; // It is a command. c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; // Read c->Request.Timeout = 0; // Don't time out c->Request.CDB[0] = CISS_REPORT_LOG; 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= hba[ctlr]->drv[log_unit].LunID; c->Header.LUN.LogDev.Mode = 1; c->Request.CDBLen = 10; c->Request.Type.Type = TYPE_CMD; // It is a command. c->Request.Type.Attribute = ATTR_SIMPLE; c->Request.Type.Direction = XFER_READ; // Read c->Request.Timeout = 0; // Don't time out c->Request.CDB[0] = CCISS_READ_CAPACITY; break; default: printk(KERN_WARNING "cciss: Unknown Command 0x%c sent attempted\n", cmd); cmd_free(info_p, c); return(IO_ERROR); }; // Fill in the scatter gather information if (size > 0 ) { temp64.val = (__u64) virt_to_bus(buff); c->SG[0].Addr.lower = temp64.val32.lower; c->SG[0].Addr.upper = temp64.val32.upper; c->SG[0].Len = size; c->SG[0].Ext = 0; // we are not chaining } /* * Disable interrupt */ #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss: turning intr off\n"); #endif /* CCISS_DEBUG */ info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); /* Make sure there is room in the command FIFO */ /* Actually it should be completely empty at this time. */ for (i = 200000; i > 0; i--) { /* if fifo isn't full go */ if (!(info_p->access.fifo_full(info_p))) { break; } udelay(10); printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," " waiting!\n", ctlr); } /* * Send the cmd */ info_p->access.submit_command(info_p, c); complete = pollcomplete(ctlr); #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss: command completed\n"); #endif /* CCISS_DEBUG */ if (complete != 1) { if ( (complete & CISS_ERROR_BIT) && (complete & ~CISS_ERROR_BIT) == c->busaddr) { /* if data overrun or underun on Report command ignore it */ if (((c->Request.CDB[0] == CISS_REPORT_LOG) || (c->Request.CDB[0] == CISS_INQUIRY)) && ((c->err_info->CommandStatus == CMD_DATA_OVERRUN) || (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) )) { complete = c->busaddr; } else { 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); cmd_free(info_p,c); return(IO_ERROR); } } if (complete != c->busaddr) { printk( KERN_WARNING "cciss cciss%d: SendCmd " "Invalid command list address returned! (%lx)\n", ctlr, complete); cmd_free(info_p, c); return (IO_ERROR); } } else { printk( KERN_WARNING "cciss cciss%d: SendCmd Timeout out, " "No command list address returned!\n", ctlr); cmd_free(info_p, c); return (IO_ERROR); } cmd_free(info_p, c); return (IO_OK); } /* * Map (physical) PCI mem into (virtual) kernel space */ static ulong remap_pci_mem(ulong base, ulong size) { ulong page_base = ((ulong) base) & PAGE_MASK; ulong page_offs = ((ulong) base) - page_base; ulong page_remapped = (ulong) ioremap(page_base, page_offs+size); return (ulong) (page_remapped ? (page_remapped + page_offs) : 0UL); } /* * 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; } /* * 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"); return; } /* Get the frist entry from the Request Q */ removeQ(&(h->reqQ), c); h->Qdepth--; /* Tell the controller execute command */ h->access.submit_command(h, c); /* Put job onto the completed Q */ addQ (&(h->cmpQ), c); } } static inline void complete_buffers( struct buffer_head *bh, int status) { struct buffer_head *xbh; while(bh) { xbh = bh->b_reqnext; bh->b_reqnext = NULL; bh->b_end_io(bh, status); bh = xbh; } } /* checks the status of the job and calls complete buffers to mark all * buffers for the completed job. */ static inline void complete_command( CommandList_struct *cmd, int timeout) { int status = 1; if (timeout) status = 0; if(cmd->err_info->CommandStatus != 0) { /* an error has occured */ switch(cmd->err_info->CommandStatus) { case CMD_TARGET_STATUS: printk(KERN_WARNING "cciss: cmd %p has " " completed with errors\n", cmd); if( cmd->err_info->ScsiStatus) { printk(KERN_WARNING "cciss: cmd %p " "has SCSI Status = %x\n", cmd, cmd->err_info->ScsiStatus); } break; case CMD_DATA_UNDERRUN: printk(KERN_WARNING "cciss: cmd %p has" " completed with data underrun " "reported\n", cmd); break; case CMD_DATA_OVERRUN: printk(KERN_WARNING "cciss: cmd %p has" " completed with data overrun " "reported\n", cmd); break; case CMD_INVALID: printk(KERN_WARNING "cciss: cmd %p is " "reported invalid\n", cmd); status = 0; break; case CMD_PROTOCOL_ERR: printk(KERN_WARNING "cciss: cmd %p has " "protocol error \n", cmd); status = 0; break; case CMD_HARDWARE_ERR: printk(KERN_WARNING "cciss: cmd %p had " " hardware error\n", cmd); status = 0; break; case CMD_CONNECTION_LOST: printk(KERN_WARNING "cciss: cmd %p had " "connection lost\n", cmd); status=0; break; case CMD_ABORTED: printk(KERN_WARNING "cciss: cmd %p was " "aborted\n", cmd); status=0; break; case CMD_ABORT_FAILED: printk(KERN_WARNING "cciss: cmd %p reports " "abort failed\n", cmd); status=0; break; case CMD_UNSOLICITED_ABORT: printk(KERN_WARNING "cciss: cmd %p aborted " "do to an unsolicited abort\n", cmd); status=0; break; case CMD_TIMEOUT: printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); status=0; break; default: printk(KERN_WARNING "cciss: cmd %p returned " "unknown status %x\n", cmd, cmd->err_info->CommandStatus); status=0; } } complete_buffers(cmd->bh, status); } /* * Get a request and submit it to the controller. * Currently we do one request at a time. Ideally we would like to send * everything to the controller on the first call, but there is a danger * of holding the io_request_lock for to long. */ static void do_cciss_request(int ctlr) { ctlr_info_t *h= hba[ctlr]; CommandList_struct *c; int log_unit, start_blk, seg, sect; char *lastdataend; struct buffer_head *bh; struct list_head *queue_head; struct request *creq; u64bit temp64; queue_head = &blk_dev[MAJOR_NR+ctlr].request_queue.queue_head; if (list_empty(queue_head)) { /* nothing to do... */ start_io(h); return; } creq = blkdev_entry_next_request(queue_head); if ((creq == NULL) || (creq->rq_status == RQ_INACTIVE)) { /* nothing to do... restart processing and return */ start_io(h); return; } if ((ctlr != (MAJOR(creq->rq_dev)-MAJOR_NR)) || (ctlr > nr_ctlr) || (h == NULL)) { #ifdef CCISS_DEBUG printk(KERN_WARNING "cciss: doreq cmd of %d, %x at %p\n", ctlr, creq->rq_dev, creq); #endif /* CCISS_DEBUG */ complete_buffers(creq->bh, 0); start_io(h); return; } if (( c = cmd_alloc(h)) == NULL) { start_io(h); return; } c->cmd_type = CMD_RWREQ; bh = c->bh = creq->bh; /* fill in the request */ log_unit = MINOR(creq->rq_dev) >> NWD_SHIFT; c->Header.ReplyQueue = 0; // unused in simple mode c->Header.Tag.lower = c->busaddr; // use the physical address the cmd block for tag c->Header.LUN.LogDev.VolId= hba[ctlr]->drv[log_unit].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 = (creq->cmd == READ) ? XFER_READ: XFER_WRITE; c->Request.Timeout = 0; // Don't time out c->Request.CDB[0] = (creq->cmd == READ) ? CCISS_READ : CCISS_WRITE; start_blk = hba[ctlr]->hd[MINOR(creq->rq_dev)].start_sect + creq->sector; if (bh == NULL) panic("cciss: bh== NULL?"); #ifdef CCISS_DEBUG printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector, (int) creq->nr_sectors); #endif /* CCISS_DEBUG */ seg = 0; lastdataend = NULL; sect = 0; while(bh) { sect += bh->b_size/512; if (bh->b_size % 512) { printk(KERN_CRIT "cciss: Oh Man. %d+%d, size=%d\n", (int) creq->sector, sect, (int) bh->b_size); panic("b_size 512 != 0\n"); } if (bh->b_data == lastdataend) { // tack it on to the last segment c->SG[seg-1].Len +=bh->b_size; lastdataend += bh->b_size; } else { c->SG[seg].Len = bh->b_size; temp64.val = (__u64) virt_to_bus(bh->b_data); c->SG[seg].Addr.lower = temp64.val32.lower; c->SG[seg].Addr.upper = temp64.val32.upper; c->SG[0].Ext = 0; // we are not chaining lastdataend = bh->b_data + bh->b_size; if( ++seg == MAXSGENTRIES) { break; } } bh = bh->b_reqnext; } /* track how many SG entries we are using */ if( seg > h->maxSG) h->maxSG = seg; /* adjusting the remaining request, if any */ creq-> sector+= sect; creq->nr_sectors -= sect; #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", sect, seg); #endif /* CCISS_DEBUG */ c->Header.SGList = c->Header.SGTotal = seg; c->Request.CDB[1]= 0; c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB c->Request.CDB[3]= (start_blk >> 16) & 0xff; c->Request.CDB[4]= (start_blk >> 8) & 0xff; c->Request.CDB[5]= start_blk & 0xff; c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB // c->Request.CDB[7]= (sect >> 16) & 0xff; c->Request.CDB[7]= (sect >> 8) & 0xff; c->Request.CDB[8]= sect & 0xff; c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; /* check to see if we going to complete the entire request */ /* if so, mark this request as Done and ready the next one */ if (creq->nr_sectors) { #ifdef CCISS_DEBUG printk(KERN_DEBUG "cciss: More to do on the same request %p %ld\n", creq, creq->nr_sectors); #endif /* CCISS_DEBUG */ creq->bh = bh->b_reqnext; bh->b_reqnext = NULL; } else { #ifdef CCISS_DEBUG printk("cciss: Done with %p, queueing %p\n", creq); #endif /* CCISS_DEBUG */ blkdev_dequeue_request(creq); end_that_request_last(creq); } addQ(&(h->reqQ),c); h->Qdepth++; if(h->Qdepth > h->maxQsinceinit) h->maxQsinceinit = h->Qdepth; start_io(h); } static void do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs) { ctlr_info_t *h = dev_id; CommandList_struct *c; unsigned long flags; __u32 a, a1; /* Is this interrupt for us? */ if ( h->access.intr_pending(h) == 0) return; /* * If there are completed commands in the completion queue, * we had better do something about it. */ spin_lock_irqsave(&io_request_lock, flags); while( h->access.intr_pending(h)) { while((a = h->access.command_completed(h)) != FIFO_EMPTY) { a1 = a; a &= ~3; if ((c = h->cmpQ) == NULL) { printk(KERN_WARNING "cpqarray: Completion of %08lx ignored\n", (unsigned long)a1); continue; } while(c->busaddr != a) { c = c->next; if (c == h->cmpQ) break; } /* * If we've found the command, take it off the * completion Q and free it */ if (c->busaddr == a) { removeQ(&h->cmpQ, c); if (c->cmd_type == CMD_RWREQ) { complete_command(c, 0); cmd_free(h, c); } else if (c->cmd_type == CMD_IOCTL_PEND) { c->cmd_type = CMD_IOCTL_DONE; } continue; } } } /* * See if we can queue up some more IO */ do_cciss_request(h->ctlr); spin_unlock_irqrestore(&io_request_lock, flags); } /* * We cannot read the structure directly, for portablity we must use * the io functions. * This is for debug only. */ #ifdef CCISS_DEBUG static void print_cfg_table( CfgTable_struct *tb) { int i; char temp_name[17]; printk("Controller Configuration information\n"); printk("------------------------------------\n"); for(i=0;i<4;i++) temp_name[i] = readb(&(tb->Signature[i])); temp_name[4]='\0'; printk(" Signature = %s\n", temp_name); printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); printk(" Transport methods supported = 0x%x\n", readl(&(tb-> TransportSupport))); printk(" Transport methods active = 0x%x\n", readl(&(tb->TransportActive))); printk(" Requested transport Method = 0x%x\n", readl(&(tb->HostWrite.TransportRequest))); printk(" Coalese Interrupt Delay = 0x%x\n", readl(&(tb->HostWrite.CoalIntDelay))); printk(" Coalese Interrupt Count = 0x%x\n", readl(&(tb->HostWrite.CoalIntCount))); printk(" Max outstanding commands = 0x%d\n", readl(&(tb->CmdsOutMax))); printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes))); for(i=0;i<16;i++) temp_name[i] = readb(&(tb->ServerName[i])); temp_name[16] = '\0'; printk(" Server Name = %s\n", temp_name); printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); } #endif /* CCISS_DEBUG */ static int cciss_pci_init(ctlr_info_t *c, unchar bus, unchar device_fn) { ushort vendor_id, device_id, command; unchar cache_line_size, latency_timer; unchar irq, revision; uint addr[6]; __u32 board_id; struct pci_dev *pdev; int i; pdev = pci_find_slot(bus, device_fn); vendor_id = pdev->vendor; device_id = pdev->device; irq = pdev->irq; for(i=0; i<6; i++) addr[i] = pdev->resource[i].start; if (pci_enable_device(pdev)) return( -1); (void) pci_read_config_word(pdev, PCI_COMMAND,&command); (void) pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision); (void) pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size); (void) pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_timer); (void) pci_read_config_dword(pdev, PCI_SUBSYSTEM_VENDOR_ID, &board_id); #ifdef CCISS_DEBUG printk("vendor_id = %x\n", vendor_id); printk("device_id = %x\n", device_id); printk("command = %x\n", command); for(i=0; i<6; i++) printk("addr[%d] = %x\n", i, addr[i]); printk("revision = %x\n", revision); printk("irq = %x\n", irq); printk("cache_line_size = %x\n", cache_line_size); printk("latency_timer = %x\n", latency_timer); printk("board_id = %x\n", board_id); #endif /* CCISS_DEBUG */ c->intr = irq; /* * Memory base addr is first addr , the second points to the config * table */ c->paddr = pci_resource_start(pdev, 0); c->vaddr = remap_pci_mem(c->paddr, 128); c->cfgtable = (CfgTable_struct *) remap_pci_mem(addr[1], sizeof(CfgTable_struct)); c->board_id = board_id; #ifdef CCISS_DEBUG print_cfg_table(c->cfgtable); #endif /* CCISS_DEBUG */ for(i=0; iproduct_name = products[i].product_name; c->access = *(products[i].access); break; } } if (i == NR_PRODUCTS) { printk(KERN_WARNING "cciss: Sorry, I don't know how" " to access the Smart Array controller %08lx\n", (unsigned long)board_id); return -1; } #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); for(i=0;ivaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) break; /* delay and try again */ udelay(1000); } #ifdef CCISS_DEBUG printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL)); #endif /* CCISS_DEBUG */ #ifdef CCISS_DEBUG print_cfg_table(c->cfgtable); #endif /* CCISS_DEBUG */ if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { printk(KERN_WARNING "cciss: unable to get board into" " simple mode\n"); return -1; } return 0; } /* * Scans PCI space for any controllers that this driver can control. */ static int cciss_pci_detect(void) { int index; unchar bus=0, dev_fn=0; for(index=0; ; index++) { if (pcibios_find_device(PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, index, &bus, &dev_fn)) break; printk(KERN_DEBUG "cciss: Device %x has been found at %x %x\n", PCI_DEVICE_ID_COMPAQ_CISS, bus, dev_fn); if (index == 1000000) break; if (nr_ctlr == 8) { printk(KERN_WARNING "cciss: This driver" " supports a maximum of 8 controllers.\n"); break; } hba[nr_ctlr] = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL); if(hba[nr_ctlr]==NULL) { printk(KERN_ERR "cciss: out of memory.\n"); continue; } memset(hba[nr_ctlr], 0, sizeof(ctlr_info_t)); if (cciss_pci_init(hba[nr_ctlr], bus, dev_fn) != 0) { kfree(hba[nr_ctlr]); continue; } sprintf(hba[nr_ctlr]->devname, "cciss%d", nr_ctlr); hba[nr_ctlr]->ctlr = nr_ctlr; hba[nr_ctlr]->pci_bus = bus; hba[nr_ctlr]->pci_dev_fn = dev_fn; nr_ctlr++; } return nr_ctlr; } /* * Gets information about the local volumes attached to the controller. */ static void cciss_getgeometry(int cntl_num) { ReportLunData_struct *ld_buff; ReadCapdata_struct *size_buff; InquiryData_struct *inq_buff; int return_code; int i; int listlength = 0; int lunid = 0; int block_size; int total_size; ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL); if (ld_buff == NULL) { printk(KERN_ERR "cciss: out of memory\n"); return; } memset(ld_buff, 0, sizeof(ReportLunData_struct)); size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); if (size_buff == NULL) { printk(KERN_ERR "cciss: out of memory\n"); kfree(ld_buff); return; } inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL); if (inq_buff == NULL) { printk(KERN_ERR "cciss: out of memory\n"); kfree(ld_buff); kfree(size_buff); return; } /* Get the firmware version */ return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, sizeof(InquiryData_struct), 0, 0 ,0 ); if (return_code == IO_OK) { hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; } else /* send command failed */ { printk(KERN_WARNING "cciss: unable to determine firmware" " version of controller\n"); } /* Get the number of logical volumes */ return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, sizeof(ReportLunData_struct), 0, 0, 0 ); if( return_code == IO_OK) { #ifdef CCISS_DEBUG printk("LUN Data\n--------------------------\n"); #endif /* CCISS_DEBUG */ listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); } else /* reading number of logical volumes failed */ { printk(KERN_WARNING "cciss: report logical volume" " command failed\n"); listlength = 0; } hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry if (hba[cntl_num]->num_luns > CISS_MAX_LUN) { printk(KERN_ERR "ciss: only %d number of logical volumes supported\n", CISS_MAX_LUN); hba[cntl_num]->num_luns = CISS_MAX_LUN; } #ifdef CCISS_DEBUG printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0], ld_buff->LUNListLength[1], ld_buff->LUNListLength[2], ld_buff->LUNListLength[3], hba[cntl_num]->num_luns); #endif /* CCISS_DEBUG */ for(i=0; i< hba[cntl_num]->num_luns ; i++) { lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) << 24; lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) << 16; lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) << 8; lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); hba[cntl_num]->drv[i].LunID = lunid; #ifdef CCISS_DEBUG printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, ld_buff->LUN[i][0], ld_buff->LUN[i][1],ld_buff->LUN[i][2], ld_buff->LUN[i][3], hba[cntl_num]->drv[i].LunID); #endif /* CCISS_DEBUG */ memset(size_buff, 0, sizeof(ReadCapdata_struct)); return_code = sendcmd(CCISS_READ_CAPACITY, cntl_num, size_buff, sizeof( ReadCapdata_struct), 1, i, 0 ); if (return_code == IO_OK) { total_size = (0xff & (unsigned int)(size_buff->total_size[0])) << 24; total_size |= (0xff & (unsigned int)(size_buff->total_size[1])) << 16; total_size |= (0xff & (unsigned int)(size_buff->total_size[2])) << 8; total_size |= (0xff & (unsigned int) (size_buff->total_size[3])); total_size++; // command returns highest block address block_size = (0xff & (unsigned int)(size_buff->block_size[0])) << 24; block_size |= (0xff & (unsigned int)(size_buff->block_size[1])) << 16; block_size |= (0xff & (unsigned int)(size_buff->block_size[2])) << 8; block_size |= (0xff & (unsigned int)(size_buff->block_size[3])); } else /* read capacity command failed */ { printk(KERN_WARNING "cciss: read capacity failed\n"); total_size = block_size = 0; } printk(" blocks= %d block_size= %d\n", total_size, block_size); /* Execute the command to read the disk geometry */ memset(inq_buff, 0, sizeof(InquiryData_struct)); return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, sizeof(InquiryData_struct), 1, i ,0xC1 ); 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"); hba[cntl_num]->drv[i].block_size = block_size; hba[cntl_num]->drv[i].nr_blocks = total_size; hba[cntl_num]->drv[i].heads = 255; hba[cntl_num]->drv[i].sectors = 32; // Sectors per track hba[cntl_num]->drv[i].cylinders = total_size / 255 / 32; } else { hba[cntl_num]->drv[i].block_size = block_size; hba[cntl_num]->drv[i].nr_blocks = total_size; hba[cntl_num]->drv[i].heads = inq_buff->data_byte[6]; hba[cntl_num]->drv[i].sectors = inq_buff->data_byte[7]; hba[cntl_num]->drv[i].cylinders = (inq_buff->data_byte[4] & 0xff) << 8; hba[cntl_num]->drv[i].cylinders += inq_buff->data_byte[5]; } } else /* Get geometry failed */ { printk(KERN_WARNING "cciss: reading geometry failed, continuing with default geometry\n"); hba[cntl_num]->drv[i].block_size = block_size; hba[cntl_num]->drv[i].nr_blocks = total_size; hba[cntl_num]->drv[i].heads = 255; hba[cntl_num]->drv[i].sectors = 32; // Sectors per track hba[cntl_num]->drv[i].cylinders = total_size / 255 / 32; } printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n", hba[cntl_num]->drv[i].heads, hba[cntl_num]->drv[i].sectors, hba[cntl_num]->drv[i].cylinders); } kfree(ld_buff); kfree(size_buff); } /* * 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. */ int __init cciss_init(void) { int num_cntlrs_reg = 0; int i,j; void (*request_fns[MAX_CTLR])(request_queue_t *) = { do_cciss_request0, do_cciss_request1, do_cciss_request2, do_cciss_request3, do_cciss_request4, do_cciss_request5, do_cciss_request6, do_cciss_request7, }; /* detect controllers */ cciss_pci_detect(); if (nr_ctlr == 0) return(num_cntlrs_reg); printk(KERN_INFO DRIVER_NAME "\n"); printk(KERN_INFO "Found %d controller(s)\n", nr_ctlr); for(i=0;idevname, &cciss_fops)) { printk(KERN_ERR "cciss: Unable to get major number " "%d for %s\n", MAJOR_NR+i, hba[i]->devname); continue; } /* make sure the board interrupts are off */ hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); if( request_irq(hba[i]->intr, do_cciss_intr, SA_INTERRUPT|SA_SHIRQ, hba[i]->devname, hba[i])) { printk(KERN_ERR "ciss: Unable to get irq %d for %s\n", hba[i]->intr, hba[i]->devname); unregister_blkdev( MAJOR_NR+i, hba[i]->devname); continue; } num_cntlrs_reg++; hba[i]->cmd_pool_bits = (__u32*)kmalloc( ((NR_CMDS+31)/32)*sizeof(__u32), GFP_KERNEL); hba[i]->cmd_pool = (CommandList_struct *)kmalloc( NR_CMDS * sizeof(CommandList_struct), GFP_KERNEL); hba[i]->errinfo_pool = (ErrorInfo_struct *)kmalloc( NR_CMDS * sizeof( ErrorInfo_struct), GFP_KERNEL); if((hba[i]->cmd_pool_bits == NULL) || (hba[i]->cmd_pool == NULL) || (hba[i]->errinfo_pool == NULL)) { nr_ctlr = i; if(hba[i]->cmd_pool_bits) kfree(hba[i]->cmd_pool_bits); if(hba[i]->cmd_pool) kfree(hba[i]->cmd_pool); if(hba[i]->errinfo_pool) kfree(hba[i]->errinfo_pool); free_irq(hba[i]->intr, hba[i]); unregister_blkdev(MAJOR_NR+i, hba[i]->devname); num_cntlrs_reg--; printk( KERN_ERR "cciss: out of memory"); return(num_cntlrs_reg); } /* command and error info recs zeroed out before they are used */ memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+31)/32)*sizeof(__u32)); #ifdef CCISS_DEBUG printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i); #endif /* CCISS_DEBUG */ cciss_getgeometry(i); /* Turn the interrupts on so we can service requests */ hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); cciss_procinit(i); blk_init_queue(BLK_DEFAULT_QUEUE(MAJOR_NR+i), request_fns[i]); blk_queue_headactive(BLK_DEFAULT_QUEUE(MAJOR_NR+i), 0); /* fill in the other Kernel structs */ blksize_size[MAJOR_NR+i] = hba[i]->blocksizes; hardsect_size[MAJOR_NR+i] = hba[i]->hardsizes; read_ahead[MAJOR_NR+i] = READ_AHEAD; /* Fill in the gendisk data */ hba[i]->gendisk.major = MAJOR_NR + i; hba[i]->gendisk.major_name = "cciss"; hba[i]->gendisk.minor_shift = NWD_SHIFT; hba[i]->gendisk.max_p = MAX_PART; hba[i]->gendisk.part = hba[i]->hd; hba[i]->gendisk.sizes = hba[i]->sizes; hba[i]->gendisk.nr_real = hba[i]->num_luns; /* Get on the disk list */ hba[i]->gendisk.next = gendisk_head; gendisk_head = &(hba[i]->gendisk); cciss_geninit(i); for(j=0; jgendisk), MKDEV(MAJOR_NR+i, j <<4), MAX_PART, &cciss_fops, hba[i]->drv[j].nr_blocks); } return(nr_ctlr); } EXPORT_NO_SYMBOLS; /* This is a bit of a hack... */ static int __init init_cciss_module(void) { if (cciss_init() == 0) /* all the block dev numbers already used */ return -EIO; /* or no controllers were found */ return 0; } static void __exit cleanup_cciss_module(void) { int i; struct gendisk *g; for(i=0; iaccess.set_intr_mask(hba[i], CCISS_INTR_OFF); free_irq(hba[i]->intr, hba[i]); iounmap((void*)hba[i]->vaddr); unregister_blkdev(MAJOR_NR+i, hba[i]->devname); remove_proc_entry(hba[i]->devname, proc_cciss); /* remove it from the disk list */ if (gendisk_head == &(hba[i]->gendisk)) { gendisk_head = hba[i]->gendisk.next; } else { for(g=gendisk_head; g ; g=g->next) { if(g->next == &(hba[i]->gendisk)) { g->next = hba[i]->gendisk.next; } } } remove_proc_entry("driver/cciss", &proc_root); kfree(hba[i]->cmd_pool); kfree(hba[i]->errinfo_pool); kfree(hba[i]->cmd_pool_bits); kfree(hba[i]); } } module_init(init_cciss_module); module_exit(cleanup_cciss_module);