/* * Disk Array driver for Compaq SMART2 Controllers * Copyright 1998 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 * * If you want to make changes, improve or add functionality to this * driver, you'll probably need the Compaq Array Controller Interface * Specificiation (Document number ECG086/1198) */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define SMART2_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) #define DRIVER_NAME "Compaq SMART2 Driver (v 1.0.4)" #define DRIVER_VERSION SMART2_DRIVER_VERSION(1,0,4) #define MAJOR_NR COMPAQ_SMART2_MAJOR #include #include #include #include "cpqarray.h" #include "ida_cmd.h" #include "smart1,2.h" #include "ida_ioctl.h" #define READ_AHEAD 128 #define NR_CMDS 128 /* This could probably go as high as ~400 */ #define MAX_CTLR 8 #define CTLR_SHIFT 8 static int nr_ctlr = 0; static ctlr_info_t *hba[MAX_CTLR] = { 0, 0, 0, 0, 0, 0, 0, 0 }; static int eisa[8] = { 0, 0 ,0 ,0, 0, 0 ,0 ,0 }; #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 */ struct board_type products[] = { { 0x0040110E, "IDA", &smart1_access }, { 0x0140110E, "IDA-2", &smart1_access }, { 0x1040110E, "IAES", &smart1_access }, { 0x2040110E, "SMART", &smart1_access }, { 0x3040110E, "SMART-2/E", &smart2e_access }, { 0x40300E11, "SMART-2/P", &smart2_access }, { 0x40310E11, "SMART-2SL", &smart2_access }, { 0x40320E11, "Smart Array 3200", &smart2_access }, { 0x40330E11, "Smart Array 3100ES", &smart2_access }, { 0x40340E11, "Smart Array 221", &smart2_access }, { 0x40400E11, "Integrated Array", &smart4_access }, { 0x40500E11, "Smart Array 4200", &smart4_access }, { 0x40510E11, "Smart Array 4250ES", &smart4_access }, }; static struct hd_struct * ida; static int * ida_sizes; static int * ida_blocksizes; static int * ida_hardsizes; static struct gendisk ida_gendisk[MAX_CTLR]; struct proc_dir_entry *proc_array = NULL; /* Debug... */ #define DBG(s) do { s } while(0) /* Debug (general info)... */ #define DBGINFO(s) do { } while(0) /* Debug Paranoid... */ #define DBGP(s) do { } while(0) /* Debug Extra Paranoid... */ #define DBGPX(s) do { } while(0) void cpqarray_init(void); static int cpqarray_pci_detect(void); static int cpqarray_pci_init(ctlr_info_t *c, unchar bus, unchar device_fn); static ulong remap_pci_mem(ulong base, ulong size); static int cpqarray_eisa_detect(void); static int pollcomplete(int ctlr); static void getgeometry(int ctlr); static void start_fwbk(int ctlr); static cmdlist_t * cmd_alloc(ctlr_info_t *h); static void cmd_free(ctlr_info_t *h, cmdlist_t *c); static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size, unsigned int blk, unsigned int blkcnt, unsigned int log_unit ); static int ida_open(struct inode *inode, struct file *filep); static int ida_release(struct inode *inode, struct file *filep); static int ida_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg); static int ida_ctlr_ioctl(int ctlr, int dsk, ida_ioctl_t *io); static void do_ida_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_IDA_REQUEST(x) { do_ida_request(x); } static void do_ida_request0(void) DO_IDA_REQUEST(0); static void do_ida_request1(void) DO_IDA_REQUEST(1); static void do_ida_request2(void) DO_IDA_REQUEST(2); static void do_ida_request3(void) DO_IDA_REQUEST(3); static void do_ida_request4(void) DO_IDA_REQUEST(4); static void do_ida_request5(void) DO_IDA_REQUEST(5); static void do_ida_request6(void) DO_IDA_REQUEST(6); static void do_ida_request7(void) DO_IDA_REQUEST(7); static void start_io(ctlr_info_t *h); static inline void addQ(cmdlist_t **Qptr, cmdlist_t *c); static inline cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *c); static inline void complete_buffers(struct buffer_head *bh, int ok); static inline void complete_command(cmdlist_t *cmd, int timeout); static void do_ida_intr(int irq, void *dev_id, struct pt_regs * regs); static void ida_timer(unsigned long tdata); static int frevalidate_logvol(kdev_t dev); static int revalidate_logvol(kdev_t dev, int maxusage); static int revalidate_allvol(kdev_t dev); static void ida_procinit(int i); static int ida_proc_get_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data); static void ida_geninit(struct gendisk *g) { int ctlr = g-ida_gendisk; int i,j; drv_info_t *drv; for(i=0; idrv[i]; if (!drv->nr_blks) continue; ida[(ctlr<nr_blks; for(j=0; j<16; j++) { ida_blocksizes[(ctlr<blk_size; } ida_gendisk[ctlr].nr_real++; } } struct file_operations ida_fops = { NULL, /* lseek - default */ block_read, /* read - general block-dev read */ block_write, /* write - general block-dev write */ NULL, /* readdir - bad */ NULL, /* select */ ida_ioctl, /* ioctl */ NULL, /* mmap */ ida_open, /* open code */ NULL, ida_release, /* release */ block_fsync, /* fsync */ NULL, /* fasync */ NULL, /* Disk change */ frevalidate_logvol, /* revalidate */ }; /* * Get us a file in /proc/array that says something about each controller. * Create /proc/array if it doesn't exist yet. */ static void ida_procinit(int i) { struct proc_dir_entry *pd; if (proc_array == NULL) { proc_array = create_proc_entry("array", S_IFDIR|S_IRUGO|S_IXUGO, &proc_root); if (!proc_array) return; } pd = create_proc_entry(hba[i]->devname, S_IFREG|S_IRUGO, proc_array); if (!pd) return; pd->read_proc = ida_proc_get_info; pd->data = hba[i]; } /* * Report information about this controller. */ static int ida_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; drv_info_t *drv; #ifdef CPQ_PROC_PRINT_QUEUES cmdlist_t *c; #endif ctlr = h->ctlr; size = sprintf(buffer, "%s: Compaq %s Controller\n" " Board ID: %08lx\n" " Firmware Revision: %c%c%c%c\n" " Controller Sig: %08lx\n" " Memory Address: %08lx\n" " I/O Port: %04x\n" " IRQ: %x\n" " Logical drives: %d\n" " Physical drives: %d\n\n" " Current Q depth: %d\n" " Max Q depth since init: %d\n\n", h->devname, h->product_name, (unsigned long)h->board_id, h->firm_rev[0], h->firm_rev[1], h->firm_rev[2], h->firm_rev[3], (unsigned long)h->ctlr_sig, (unsigned long)h->vaddr, (unsigned int) h->ioaddr, (unsigned int)h->intr, h->log_drives, h->phys_drives, h->Qdepth, h->maxQsinceinit); pos += size; len += size; size = sprintf(buffer+len, "Logical Drive Info:\n"); pos += size; len += size; for(i=0; ilog_drives; i++) { drv = &h->drv[i]; size = sprintf(buffer+len, "ida/c%dd%d: blksz=%d nr_blks=%d\n", ctlr, i, drv->blk_size, drv->nr_blks); pos += size; len += size; } #ifdef CPQ_PROC_PRINT_QUEUES size = sprintf(buffer+len, "\nCurrent Queues:\n"); pos += size; len += size; c = h->reqQ; size = sprintf(buffer+len, "reqQ = %p", c); pos += size; len += size; if (c) c=c->next; while(c && c != h->reqQ) { size = sprintf(buffer+len, "->%p", c); pos += size; len += size; c=c->next; } c = h->cmpQ; size = sprintf(buffer+len, "\ncmpQ = %p", c); pos += size; len += size; if (c) c=c->next; while(c && c != h->cmpQ) { size = sprintf(buffer+len, "->%p", c); pos += size; len += size; c=c->next; } size = sprintf(buffer+len, "\n"); pos += size; len += size; #endif 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; } #ifdef MODULE MODULE_PARM(eisa, "1-8i"); EXPORT_NO_SYMBOLS; /* This is a bit of a hack... */ int init_module(void) { int i, j; cpqarray_init(); if (nr_ctlr == 0) return -EIO; for(i=0; iaccess.set_intr_mask(hba[i], 0); free_irq(hba[i]->intr, hba[i]); iounmap((void*)hba[i]->vaddr); unregister_blkdev(MAJOR_NR+i, hba[i]->devname); del_timer(&hba[i]->timer); remove_proc_entry(hba[i]->devname, proc_array); kfree(hba[i]->cmd_pool); kfree(hba[i]->cmd_pool_bits); if (gendisk_head == &ida_gendisk[i]) { gendisk_head = ida_gendisk[i].next; } else { for(g=gendisk_head; g; g=g->next) { if (g->next == &ida_gendisk[i]) { g->next = ida_gendisk[i].next; break; } } } } remove_proc_entry("array", &proc_root); kfree(ida); kfree(ida_sizes); kfree(ida_hardsizes); kfree(ida_blocksizes); } #endif /* MODULE */ /* * This is it. Find all the controllers and register them. I really hate * stealing all these major device numbers. */ void cpqarray_init(void) { void (*request_fns[MAX_CTLR])(void) = { do_ida_request0, do_ida_request1, do_ida_request2, do_ida_request3, do_ida_request4, do_ida_request5, do_ida_request6, do_ida_request7, }; int i; /* detect controllers */ cpqarray_pci_detect(); cpqarray_eisa_detect(); if (nr_ctlr == 0) return; printk(DRIVER_NAME "\n"); printk("Found %d controller(s)\n", nr_ctlr); /* allocate space for disk structs */ ida = kmalloc(sizeof(struct hd_struct)*nr_ctlr*NWD*16, GFP_KERNEL); if(ida==NULL) goto bail; ida_sizes = kmalloc(sizeof(int)*nr_ctlr*NWD*16, GFP_KERNEL); if(ida_sizes==NULL) goto bail2; ida_blocksizes = kmalloc(sizeof(int)*nr_ctlr*NWD*16, GFP_KERNEL); if(ida_blocksizes==NULL) goto bail3; ida_hardsizes = kmalloc(sizeof(int)*nr_ctlr*NWD*16, GFP_KERNEL); if(ida_hardsizes==NULL) goto bail4; memset(ida, 0, sizeof(struct hd_struct)*nr_ctlr*NWD*16); memset(ida_sizes, 0, sizeof(int)*nr_ctlr*NWD*16); memset(ida_blocksizes, 0, sizeof(int)*nr_ctlr*NWD*16); memset(ida_hardsizes, 0, sizeof(int)*nr_ctlr*NWD*16); memset(ida_gendisk, 0, sizeof(struct gendisk)*MAX_CTLR); /* * register block devices * Find disks and fill in structs * Get an interrupt, set the Q depth and get into /proc */ for(i=0; i< nr_ctlr; i++) { hba[i]->access.set_intr_mask(hba[i], 0); if (request_irq(hba[i]->intr, do_ida_intr, SA_INTERRUPT|SA_SHIRQ, hba[i]->devname, hba[i])) { printk("Unable to get irq %d for %s\n", hba[i]->intr, hba[i]->devname); continue; } if (register_blkdev(MAJOR_NR+i, hba[i]->devname, &ida_fops)) { printk("Unable to get major number %d for ida\n", MAJOR_NR+i); continue; } hba[i]->cmd_pool = (cmdlist_t *)kmalloc( NR_CMDS * sizeof(cmdlist_t), GFP_KERNEL); hba[i]->cmd_pool_bits = (__u32*)kmalloc( ((NR_CMDS+31)/32)*sizeof(__u32), GFP_KERNEL); if(hba[i]->cmd_pool_bits == NULL || hba[i]->cmd_pool == NULL) { int j; if(hba[i]->cmd_pool_bits) kfree(hba[i]->cmd_pool_bits); if(hba[i]->cmd_pool) kfree(hba[i]->cmd_pool); for(j=0;iintr, hba[j]); unregister_blkdev(MAJOR_NR+j, hba[j]->devname); kfree(hba[j]->cmd_pool_bits); kfree(hba[j]->cmd_pool); } free_irq(hba[i]->intr, hba[i]); unregister_blkdev(MAJOR_NR+i, hba[i]->devname); goto bail5; } memset(hba[i]->cmd_pool, 0, NR_CMDS * sizeof(cmdlist_t)); memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+31)/32)*sizeof(__u32)); printk("Finding drives on %s", hba[i]->devname); getgeometry(i); start_fwbk(i); hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY); ida_procinit(i); ida_gendisk[i].major = MAJOR_NR + i; ida_gendisk[i].major_name = "ida"; ida_gendisk[i].minor_shift = NWD_SHIFT; ida_gendisk[i].max_p = 16; ida_gendisk[i].max_nr = 16; ida_gendisk[i].init = ida_geninit; ida_gendisk[i].part = ida + (i*256); ida_gendisk[i].sizes = ida_sizes + (i*256); /* ida_gendisk[i].nr_real is handled by getgeometry */ blk_dev[MAJOR_NR+i].request_fn = request_fns[i]; blksize_size[MAJOR_NR+i] = ida_blocksizes + (i*256); hardsect_size[MAJOR_NR+i] = ida_hardsizes + (i*256); read_ahead[MAJOR_NR+i] = READ_AHEAD; /* Get on the disk list */ ida_gendisk[i].next = gendisk_head; gendisk_head = &ida_gendisk[i]; init_timer(&hba[i]->timer); hba[i]->timer.expires = jiffies + IDA_TIMER; hba[i]->timer.data = (unsigned long)hba[i]; hba[i]->timer.function = ida_timer; add_timer(&hba[i]->timer); } /* done ! */ return; bail5: kfree(ida_hardsizes); bail4: kfree(ida_blocksizes); bail3: kfree(ida_sizes); bail2: kfree(ida); bail: printk(KERN_ERR "cpqarray: out of memory.\n"); } /* * Find the controller and initialize it * Cannot use the class code to search, because older array controllers use * 0x018000 and new ones use 0x010400. So I might as well search for each * each device IDs, being there are only going to be three of them. */ static int cpqarray_pci_detect(void) { int index; unchar bus=0, dev_fn=0; /* This seems dumb, surely we could use an array of types to match ?? */ for(index=0; ; index++) { if (pcibios_find_device(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX, index, &bus, &dev_fn)) break; printk(KERN_DEBUG "42XX Device has been found at %x %x\n", bus, dev_fn); if (index == 1000000) break; if (nr_ctlr == 8) { printk("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 "cpqarray: out of memory.\n"); continue; } memset(hba[nr_ctlr], 0, sizeof(ctlr_info_t)); if (cpqarray_pci_init(hba[nr_ctlr], bus, dev_fn) != 0) continue; sprintf(hba[nr_ctlr]->devname, "ida%d", nr_ctlr); hba[nr_ctlr]->ctlr = nr_ctlr; nr_ctlr++; } for(index=0; ; index++) { unsigned short subvendor=0; if (pcibios_find_device(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C1510, index, &bus, &dev_fn)) break; printk(KERN_DEBUG "Integrated RAID Chip has been found at %x %x\n", bus, dev_fn); if(pcibios_read_config_word(bus, dev_fn, PCI_SUBSYSTEM_VENDOR_ID, &subvendor)) { printk(KERN_DEBUG "cpqarray failed to read subvendor\n"); break; } if(subvendor != PCI_VENDOR_ID_COMPAQ) break; printk(KERN_DEBUG "Its a compaq RAID Chip\n"); if (index == 1000000) break; if (nr_ctlr == 8) { printk("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 "cpqarray: out of memory.\n"); continue; } memset(hba[nr_ctlr], 0, sizeof(ctlr_info_t)); /* DOESNT THIS LEAK MEMORY ?????? - AC */ if (cpqarray_pci_init(hba[nr_ctlr], bus, dev_fn) != 0) continue; sprintf(hba[nr_ctlr]->devname, "ida%d", nr_ctlr); hba[nr_ctlr]->ctlr = nr_ctlr; nr_ctlr++; } for(index=0; ; index++) { if (pcibios_find_device(PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P, index, &bus, &dev_fn)) break; if (index == 1000000) break; if (nr_ctlr == 8) { printk("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 "cpqarray: out of memory.\n"); continue; } memset(hba[nr_ctlr], 0, sizeof(ctlr_info_t)); if (cpqarray_pci_init(hba[nr_ctlr], bus, dev_fn) != 0) continue; sprintf(hba[nr_ctlr]->devname, "ida%d", nr_ctlr); hba[nr_ctlr]->ctlr = nr_ctlr; nr_ctlr++; } return nr_ctlr; } /* * Find the IO address of the controller, its IRQ and so forth. Fill * in some basic stuff into the ctlr_info_t structure. */ static int cpqarray_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->base_address[i]; (void) pcibios_read_config_word(bus, device_fn, PCI_COMMAND,&command); (void) pcibios_read_config_byte(bus, device_fn, PCI_CLASS_REVISION,&revision); (void) pcibios_read_config_byte(bus, device_fn, PCI_CACHE_LINE_SIZE, &cache_line_size); (void) pcibios_read_config_byte(bus, device_fn, PCI_LATENCY_TIMER, &latency_timer); (void) pcibios_read_config_dword(bus, device_fn, 0x2c, &board_id); DBGINFO( 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); ); c->intr = irq; c->ioaddr = addr[0] & ~0x1; /* * Memory base addr is first addr with the first bit _not_ set */ for(i=0; i<6; i++) if (!(addr[i] & 0x1)) { c->paddr = addr[i]; break; } c->vaddr = remap_pci_mem(c->paddr, 128); c->board_id = board_id; for(i=0; iproduct_name = products[i].product_name; c->access = *(products[i].access); break; } } if (i == NR_PRODUCTS) { printk("Sorry, I don't know how to access the SMART Array" " controller %08lx\n", (unsigned long)board_id); return -1; } return 0; } /* * 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); } /* * Copy the contents of the ints[] array passed to us by init. */ void cpqarray_setup(char *str, int *ints) { int i; for(i=0; iioaddr = eisa[i]; /* * Read the config register to find our interrupt */ intr = inb(eisa[i]+0xCC0) >> 4; if (intr & 1) intr = 11; else if (intr & 2) intr = 10; else if (intr & 4) intr = 14; else if (intr & 8) intr = 15; hba[nr_ctlr]->intr = intr; sprintf(hba[nr_ctlr]->devname, "ida%d", nr_ctlr); hba[nr_ctlr]->product_name = products[j].product_name; hba[nr_ctlr]->access = *(products[j].access); hba[nr_ctlr]->ctlr = nr_ctlr; hba[nr_ctlr]->board_id = board_id; DBGINFO( printk("i = %d, j = %d\n", i, j); printk("irq = %x\n", intr); printk("product name = %s\n", products[j].product_name); printk("board_id = %x\n", board_id); ); nr_ctlr++; i++; } return nr_ctlr; } /* * Open. Make sure the device is really there. */ static int ida_open(struct inode *inode, struct file *filep) { int ctlr = MAJOR(inode->i_rdev) - MAJOR_NR; int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT; DBGINFO(printk("ida_open %x (%x:%x)\n", inode->i_rdev, ctlr, dsk) ); if (ctlr > MAX_CTLR || hba[ctlr] == NULL) return -ENXIO; if (!suser() && ida_sizes[(ctlr << CTLR_SHIFT) + 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() && ida_sizes[(ctlr << CTLR_SHIFT) + 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 ida_release(struct inode *inode, struct file *filep) { int ctlr = MAJOR(inode->i_rdev) - MAJOR_NR; int dsk = MINOR(inode->i_rdev) >> NWD_SHIFT; DBGINFO(printk("ida_release %x (%x:%x)\n", inode->i_rdev, ctlr, dsk) ); fsync_dev(inode->i_rdev); hba[ctlr]->drv[dsk].usage_count--; hba[ctlr]->usage_count--; MOD_DEC_USE_COUNT; return 0; } /* * Enqueuing and dequeuing functions for cmdlists. */ static inline void addQ(cmdlist_t **Qptr, cmdlist_t *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 cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *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; } /* * Get a request and submit it to the controller. * This routine needs to grab all the requests it possibly can from the * req Q and submit them. Interrupts are off (and need to be off) when you * are in here (either via the dummy do_ida_request functions or by being * called from the interrupt handler */ static void do_ida_request(int ctlr) { ctlr_info_t *h = hba[ctlr]; cmdlist_t *c; int seg, sect; char *lastdataend; struct buffer_head *bh; struct request *creq; creq = blk_dev[MAJOR_NR+ctlr].current_request; if (creq == NULL || creq->rq_status == RQ_INACTIVE) goto doreq_done; if (ctlr != MAJOR(creq->rq_dev)-MAJOR_NR || ctlr > nr_ctlr || h == NULL) { printk("doreq cmd for %d, %x at %p\n", ctlr, creq->rq_dev, creq); complete_buffers(creq->bh, 0); goto doreq_done; } if ((c = cmd_alloc(h)) == NULL) goto doreq_done; bh = creq->bh; c->ctlr = ctlr; c->hdr.unit = MINOR(creq->rq_dev) >> NWD_SHIFT; c->hdr.size = sizeof(rblk_t) >> 2; c->size += sizeof(rblk_t); c->req.hdr.blk = ida[(ctlr<rq_dev)].start_sect + creq->sector; c->bh = bh; DBGPX( if (bh == NULL) panic("bh == NULL?"); printk("sector=%d, nr_sectors=%d\n", creq->sector, creq->nr_sectors); ); seg = 0; lastdataend = NULL; sect = 0; while(bh) { sect += bh->b_size/512; DBGPX( if (bh->b_size % 512) { printk("Oh damn. %d+%d, size = %d\n", creq->sector, sect, bh->b_size); panic("b_size %% 512 != 0"); } ); if (bh->b_data == lastdataend) { c->req.sg[seg-1].size += bh->b_size; lastdataend += bh->b_size; } else { c->req.sg[seg].size = bh->b_size; c->req.sg[seg].addr = (__u32)virt_to_bus(bh->b_data); lastdataend = bh->b_data + bh->b_size; if (++seg == SG_MAX) break; } bh = bh->b_reqnext; } DBGPX( printk("Submitting %d sectors in %d segments\n", sect, seg); ); c->req.hdr.sg_cnt = seg; c->req.hdr.blk_cnt = sect; creq->sector += sect; creq->nr_sectors -= sect; /* Ready the next request: * Fix up creq if we still have more buffers in the buffer chain, or * mark this request as done and ready the next one. */ if (creq->nr_sectors) { DBGPX( if (bh==NULL) { printk("sector=%d, nr_sectors=%d, sect=%d, seg=%d\n", creq->sector, creq->nr_sectors, sect, seg); panic("mother..."); } ); creq->bh = bh->b_reqnext; bh->b_reqnext = NULL; DBGPX( printk("More to do on same request %p\n", creq); ); } else { DBGPX( printk("Done with %p, queueing %p\n", creq, creq->next); ); creq->rq_status = RQ_INACTIVE; blk_dev[MAJOR_NR+ctlr].current_request = creq->next; wake_up(&wait_for_request); } c->req.hdr.cmd = (creq->cmd == READ) ? IDA_READ : IDA_WRITE; c->type = CMD_RWREQ; /* Put the request on the tail of the request queue */ addQ(&h->reqQ, c); h->Qdepth++; if (h->Qdepth > h->maxQsinceinit) h->maxQsinceinit = h->Qdepth; doreq_done: start_io(h); } /* * start_io submits everything on a controller's request queue * and moves it to the completion queue. * * Interrupts had better be off if you're in here */ static void start_io(ctlr_info_t *h) { cmdlist_t *c; while((c = h->reqQ) != NULL) { /* Can't do anything if we're busy */ if (h->access.fifo_full(h) == 0) return; /* Get the first entry from the request Q */ removeQ(&h->reqQ, c); h->Qdepth--; /* Tell the controller to do our bidding */ h->access.submit_command(h, c); /* Get onto the completion Q */ addQ(&h->cmpQ, c); } } static inline void complete_buffers(struct buffer_head *bh, int ok) { struct buffer_head *xbh; while(bh) { xbh = bh->b_reqnext; bh->b_reqnext = NULL; bh->b_end_io(bh, ok); bh = xbh; } } /* * Mark all buffers that cmd was responsible for */ static inline void complete_command(cmdlist_t *cmd, int timeout) { char buf[80]; int ok=1; if (cmd->req.hdr.rcode & RCODE_NONFATAL && (hba[cmd->ctlr]->misc_tflags & MISC_NONFATAL_WARN) == 0) { sprintf(buf, "Non Fatal error on ida/c%dd%d\n", cmd->ctlr, cmd->hdr.unit); console_print(buf); hba[cmd->ctlr]->misc_tflags |= MISC_NONFATAL_WARN; } if (cmd->req.hdr.rcode & RCODE_FATAL) { sprintf(buf, "Fatal error on ida/c%dd%d\n", cmd->ctlr, cmd->hdr.unit); console_print(buf); ok = 0; } if (cmd->req.hdr.rcode & RCODE_INVREQ) { sprintf(buf, "Invalid request on ida/c%dd%d = (cmd=%x sect=%d cnt=%d sg=%d ret=%x)\n", cmd->ctlr, cmd->hdr.unit, cmd->req.hdr.cmd, cmd->req.hdr.blk, cmd->req.hdr.blk_cnt, cmd->req.hdr.sg_cnt, cmd->req.hdr.rcode); console_print(buf); ok = 0; } if (timeout) ok = 0; complete_buffers(cmd->bh, ok); } /* * The controller will interrupt us upon completion of commands. * Find the command on the completion queue, remove it, tell the OS and * try to queue up more IO */ static void do_ida_intr(int irq, void *dev_id, struct pt_regs *regs) { ctlr_info_t *h = dev_id; cmdlist_t *c; unsigned long istat; unsigned long flags; __u32 a,a1; istat = h->access.intr_pending(h); /* Is this interrupt for us? */ if (istat == 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); if (istat & FIFO_NOT_EMPTY) { while((a = h->access.command_completed(h))) { a1 = a; a &= ~3; if ((c = h->cmpQ) == NULL) goto bad_completion; 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->type == CMD_RWREQ) { complete_command(c, 0); cmd_free(h, c); } else if (c->type == CMD_IOCTL_PEND) { c->type = CMD_IOCTL_DONE; } continue; } bad_completion: printk("Completion of %08lx ignored\n", (unsigned long)a1); } } /* * See if we can queue up some more IO */ do_ida_request(h->ctlr); spin_unlock_irqrestore(&io_request_lock, flags); } /* * This timer was for timing out requests that haven't happened after * IDA_TIMEOUT. That wasn't such a good idea. This timer is used to * reset a flags structure so we don't flood the user with * "Non-Fatal error" messages. */ static void ida_timer(unsigned long tdata) { ctlr_info_t *h = (ctlr_info_t*)tdata; h->timer.expires = jiffies + IDA_TIMER; add_timer(&h->timer); h->misc_tflags = 0; } /* * ida_ioctl does some miscellaneous stuff like reporting drive geometry, * setting readahead and submitting commands from userspace to the controller. */ static int ida_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 error; int diskinfo[4]; struct hd_geometry *geo = (struct hd_geometry *)arg; ida_ioctl_t *io = (ida_ioctl_t*)arg; ida_ioctl_t my_io; 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_blks / (0xff*0x3f); } put_user(diskinfo[0], &geo->heads); put_user(diskinfo[1], &geo->sectors); put_user(diskinfo[2], &geo->cylinders); put_user(ida[(ctlr<i_rdev)].start_sect, &geo->start); return 0; case IDAGETDRVINFO: return copy_to_user(&io->c.drv,&hba[ctlr]->drv[dsk],sizeof(drv_info_t)); case BLKGETSIZE: if (!arg) return -EINVAL; put_user(ida[(ctlr<i_rdev)].nr_sects, (long*)arg); return 0; case BLKRRPART: return revalidate_logvol(inode->i_rdev, 1); case IDAPASSTHRU: if (!suser()) return -EPERM; error = copy_from_user(&my_io, io, sizeof(my_io)); if (error) return error; error = ida_ctlr_ioctl(ctlr, dsk, &my_io); if (error) return error; error = copy_to_user(io, &my_io, sizeof(my_io)); return error; case IDAGETCTLRSIG: if (!arg) return -EINVAL; put_user(hba[ctlr]->ctlr_sig, (int*)arg); return 0; case IDAREVALIDATEVOLS: return revalidate_allvol(inode->i_rdev); case IDADRIVERVERSION: if (!arg) return -EINVAL; put_user(DRIVER_VERSION, (unsigned long*)arg); return 0; case BLKFLSBUF: case BLKROSET: case BLKROGET: case BLKRASET: case BLKRAGET: case BLKPG: return blk_ioctl(inode->i_rdev, cmd, arg); default: return -EBADRQC; } } /* * ida_ctlr_ioctl is for passing commands to the controller from userspace. * The command block (io) has already been copied to kernel space for us, * however, any elements in the sglist need to be copied to kernel space * or copied back to userspace. * * Only root may perform a controller passthru command, however I'm not doing * any serious sanity checking on the arguments. Doing an IDA_WRITE_MEDIA and * putting a 64M buffer in the sglist is probably a *bad* idea. */ static int ida_ctlr_ioctl(int ctlr, int dsk, ida_ioctl_t *io) { ctlr_info_t *h = hba[ctlr]; cmdlist_t *c; void *p = NULL; unsigned long flags; int error; if ((c = cmd_alloc(NULL)) == NULL) return -ENOMEM; c->ctlr = ctlr; c->hdr.unit = (io->unit & UNITVALID) ? (io->unit & ~UNITVALID) : dsk; c->hdr.size = sizeof(rblk_t) >> 2; c->size += sizeof(rblk_t); c->req.hdr.cmd = io->cmd; c->req.hdr.blk = io->blk; c->req.hdr.blk_cnt = io->blk_cnt; c->type = CMD_IOCTL_PEND; /* Pre submit processing */ switch(io->cmd) { case PASSTHRU_A: p = kmalloc(io->sg[0].size, GFP_KERNEL); if (!p) { error = -ENOMEM; goto ioctl_err_exit; } copy_from_user(p, (void*)io->sg[0].addr, io->sg[0].size); c->req.bp = virt_to_bus(&(io->c)); c->req.sg[0].size = io->sg[0].size; c->req.sg[0].addr = virt_to_bus(p); c->req.hdr.sg_cnt = 1; break; case IDA_READ: p = kmalloc(io->sg[0].size, GFP_KERNEL); if (!p) { error = -ENOMEM; goto ioctl_err_exit; } c->req.sg[0].size = io->sg[0].size; c->req.sg[0].addr = virt_to_bus(p); c->req.hdr.sg_cnt = 1; break; case IDA_WRITE: case IDA_WRITE_MEDIA: case DIAG_PASS_THRU: p = kmalloc(io->sg[0].size, GFP_KERNEL); if (!p) { error = -ENOMEM; goto ioctl_err_exit; } copy_from_user(p, (void*)io->sg[0].addr, io->sg[0].size); c->req.sg[0].size = io->sg[0].size; c->req.sg[0].addr = virt_to_bus(p); c->req.hdr.sg_cnt = 1; break; default: c->req.sg[0].size = sizeof(io->c); c->req.sg[0].addr = virt_to_bus(&io->c); c->req.hdr.sg_cnt = 1; } /* 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->type != CMD_IOCTL_DONE) schedule(); /* Post submit processing */ switch(io->cmd) { case PASSTHRU_A: case IDA_READ: case DIAG_PASS_THRU: copy_to_user((void*)io->sg[0].addr, p, io->sg[0].size); /* fall through and free p */ case IDA_WRITE: case IDA_WRITE_MEDIA: kfree(p); break; default: /* Nothing to do */ } io->rcode = c->req.hdr.rcode; error = 0; ioctl_err_exit: cmd_free(NULL, c); return error; } /* * Commands are pre-allocated in a large block. Here we use a simple bitmap * scheme to suballocte them to the driver. Operations that are not time * critical (and can wait for kmalloc and possibly sleep) can pass in NULL * as the first argument to get a new command. */ static cmdlist_t * cmd_alloc(ctlr_info_t *h) { cmdlist_t * c; int i; if (h == NULL) { c = (cmdlist_t*)kmalloc(sizeof(cmdlist_t), GFP_KERNEL); if(c==NULL) return NULL; } else { 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); c = h->cmd_pool + i; h->nr_allocs++; } memset(c, 0, sizeof(cmdlist_t)); c->busaddr = virt_to_bus(c); return c; } static void cmd_free(ctlr_info_t *h, cmdlist_t *c) { int i; if (h == NULL) { kfree(c); } else { i = c - h->cmd_pool; clear_bit(i%32, h->cmd_pool_bits+(i/32)); h->nr_frees++; } } /*********************************************************************** name: sendcmd Send a command to an IDA using the memory mapped FIFO interface and wait for it to complete. This routine should only be called at init time. ***********************************************************************/ static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size, unsigned int blk, unsigned int blkcnt, unsigned int log_unit ) { cmdlist_t *c; int complete; unsigned long temp; unsigned long i; ctlr_info_t *info_p = hba[ctlr]; c = cmd_alloc(info_p); c->ctlr = ctlr; c->hdr.unit = log_unit; c->hdr.prio = 0; c->hdr.size = sizeof(rblk_t) >> 2; c->size += sizeof(rblk_t); /* The request information. */ c->req.hdr.next = 0; c->req.hdr.rcode = 0; c->req.bp = 0; c->req.hdr.sg_cnt = 1; c->req.hdr.reserved = 0; if (size == 0) c->req.sg[0].size = 512; else c->req.sg[0].size = size; c->req.hdr.blk = blk; c->req.hdr.blk_cnt = blkcnt; c->req.hdr.cmd = (unsigned char) cmd; c->req.sg[0].addr = (__u32) virt_to_bus(buff); /* * Disable interrupt */ info_p->access.set_intr_mask(info_p, 0); /* Make sure there is room in the command FIFO */ /* Actually it should be completely empty at this time. */ for (i = 200000; i > 0; i--) { temp = info_p->access.fifo_full(info_p); if (temp != 0) { break; } udelay(10); DBG( printk("ida%d: idaSendPciCmd FIFO full, waiting!\n", ctlr); ); } /* * Send the cmd */ info_p->access.submit_command(info_p, c); complete = pollcomplete(ctlr); if (complete != 1) { if (complete != c->busaddr) { printk( "ida%d: idaSendPciCmd " "Invalid command list address returned! (%08lx)\n", ctlr, (unsigned long)complete); cmd_free(info_p, c); return (IO_ERROR); } } else { printk( "ida%d: idaSendPciCmd Timeout out, " "No command list address returned!\n", ctlr); cmd_free(info_p, c); return (IO_ERROR); } if (c->req.hdr.rcode & 0x00FE) { if (!(c->req.hdr.rcode & BIG_PROBLEM)) { printk( "ida%d: idaSendPciCmd, error: Controller failed " "at init time " "cmd: 0x%x, return code = 0x%x\n", ctlr, c->req.hdr.cmd, c->req.hdr.rcode); cmd_free(info_p, c); return (IO_ERROR); } } cmd_free(info_p, c); return (IO_OK); } static int frevalidate_logvol(kdev_t dev) { 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("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(ida+(ctlr*256), 0, sizeof(struct hd_struct)*NWD*16); memset(ida_sizes+(ctlr*256), 0, sizeof(int)*NWD*16); memset(ida_blocksizes+(ctlr*256), 0, sizeof(int)*NWD*16); memset(ida_hardsizes+(ctlr*256), 0, sizeof(int)*NWD*16); memset(hba[ctlr]->drv, 0, sizeof(drv_info_t)*NWD); ida_gendisk[ctlr].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], 0); getgeometry(ctlr); hba[ctlr]->access.set_intr_mask(hba[ctlr], FIFO_NOT_EMPTY); ida_geninit(&ida_gendisk[ctlr]); for(i=0; iusage_count--; return 0; } /* 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 = DEVICE_NR(dev); ctlr = MAJOR(dev) - MAJOR_NR; gdev = &ida_gendisk[ctlr]; spin_lock_irqsave(&io_request_lock, flags); if (hba[ctlr]->drv[target].usage_count > maxusage) { spin_unlock_irqrestore(&io_request_lock, flags); printk("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; } gdev->part[start].nr_sects = hba[ctlr]->drv[target].nr_blks; resetup_one_dev(gdev, target); hba[ctlr]->drv[target].usage_count--; return 0; } /******************************************************************** name: pollcomplete Wait polling for a command to complete. The memory mapped FIFO is polled for the completion. Used only at init time, interrupts disabled. ********************************************************************/ static int pollcomplete(int ctlr) { int 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 == 0) { udelay(10); /* a short fixed delay */ } else return (done); } /* Invalid address to tell caller we ran out of time */ return 1; } /***************************************************************** start_fwbk Starts controller firmwares background processing. Currently only the Integrated Raid controller needs this done. If the PCI mem address registers are written to after this, data corruption may occur *****************************************************************/ static void start_fwbk(int ctlr) { id_ctlr_t *id_ctlr_buf; int ret_code; if( hba[ctlr]->board_id != 0x40400E11) /* Not a Integrated Raid, so there is nothing for us to do */ return; printk(KERN_DEBUG "Starting firmware's background processing\n"); /* Command does not return anything, but idasend command needs a buffer */ id_ctlr_buf = (id_ctlr_t *)kmalloc(sizeof(id_ctlr_t), GFP_KERNEL); if(id_ctlr_buf==NULL) { printk(KERN_WARNING "Out of memory. Unable to start background processing.\n"); return; } ret_code = sendcmd(RESUME_BACKGROUND_ACTIVITY, ctlr, id_ctlr_buf, 0, 0, 0, 0); if(ret_code != IO_OK) printk(KERN_WARNING "Unable to start background processing\n"); kfree(id_ctlr_buf); } /***************************************************************** getgeometry Get ida logical volume geometry from the controller This is a large bit of code which once existed in two flavors, It is used only at init time. *****************************************************************/ static void getgeometry(int ctlr) { id_log_drv_t *id_ldrive; id_ctlr_t *id_ctlr_buf; sense_log_drv_stat_t *id_lstatus_buf; config_t *sense_config_buf; unsigned int log_unit, log_index; int ret_code, size; drv_info_t *drv; ctlr_info_t *info_p = hba[ctlr]; info_p->log_drv_map = 0; id_ldrive = (id_log_drv_t *)kmalloc(sizeof(id_log_drv_t), GFP_KERNEL); if(id_ldrive == NULL) return; id_ctlr_buf = (id_ctlr_t *)kmalloc(sizeof(id_ctlr_t), GFP_KERNEL); if(id_ctlr_buf == NULL) goto bail2; id_lstatus_buf = (sense_log_drv_stat_t *)kmalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL); if(id_lstatus_buf == NULL) goto bail3; sense_config_buf = (config_t *)kmalloc(sizeof(config_t), GFP_KERNEL); if(sense_config_buf == NULL) goto bail4; memset(id_ldrive, 0, sizeof(id_log_drv_t)); memset(id_ctlr_buf, 0, sizeof(id_ctlr_t)); memset(id_lstatus_buf, 0, sizeof(sense_log_drv_stat_t)); memset(sense_config_buf, 0, sizeof(config_t)); info_p->phys_drives = 0; info_p->log_drv_map = 0; info_p->drv_assign_map = 0; info_p->drv_spare_map = 0; info_p->mp_failed_drv_map = 0; /* only initialized here */ /* Get controllers info for this logical drive */ ret_code = sendcmd(ID_CTLR, ctlr, id_ctlr_buf, 0, 0, 0, 0); if (ret_code == IO_ERROR) { /* * If can't get controller info, set the logical drive map to 0, * so the idastubopen will fail on all logical drives * on the controller. */ goto geo_ret; /* release the buf and return */ } info_p->log_drives = id_ctlr_buf->nr_drvs;; *(__u32*)(info_p->firm_rev) = *(__u32*)(id_ctlr_buf->firm_rev); info_p->ctlr_sig = id_ctlr_buf->cfg_sig; printk(" (%s)\n", info_p->product_name); /* * Initialize logical drive map to zero */ log_index = 0; /* * Get drive geometry for all logical drives */ if (id_ctlr_buf->nr_drvs > 16) printk("ida%d: This driver supports 16 logical drives " "per controller.\n. Additional drives will not be " "detected\n", ctlr); for (log_unit = 0; (log_index < id_ctlr_buf->nr_drvs) && (log_unit < NWD); log_unit++) { size = sizeof(sense_log_drv_stat_t); /* Send "Identify logical drive status" cmd */ ret_code = sendcmd(SENSE_LOG_DRV_STAT, ctlr, id_lstatus_buf, size, 0, 0, log_unit); if (ret_code == IO_ERROR) { /* If can't get logical drive status, set the logical drive map to 0, so the idastubopen will fail for all logical drives on the controller. */ info_p->log_drv_map = 0; printk( "ida%d: idaGetGeometry - Controller failed " "to report status of logical drive %d\n" "Access to this controller has been disabled\n", ctlr, log_unit); goto geo_ret; /* release the buf and return */ } /* Make sure the logical drive is configured */ if (id_lstatus_buf->status != LOG_NOT_CONF) { ret_code = sendcmd(ID_LOG_DRV, ctlr, id_ldrive, sizeof(id_log_drv_t), 0, 0, log_unit); /* If error, the bit for this logical drive won't be set and idastubopen will return error. */ if (ret_code != IO_ERROR) { drv = &info_p->drv[log_unit]; drv->blk_size = id_ldrive->blk_size; drv->nr_blks = id_ldrive->nr_blks; drv->cylinders = id_ldrive->drv.cyl; drv->heads = id_ldrive->drv.heads; drv->sectors = id_ldrive->drv.sect_per_track; info_p->log_drv_map |= (1 << log_unit); printk("ida/c%dd%d: blksz=%d nr_blks=%d\n", ctlr, log_unit, drv->blk_size, drv->nr_blks); ret_code = sendcmd(SENSE_CONFIG, ctlr, sense_config_buf, sizeof(config_t), 0, 0, log_unit); if (ret_code == IO_ERROR) { info_p->log_drv_map = 0; goto geo_ret; /* release the buf and return */ } info_p->phys_drives = sense_config_buf->ctlr_phys_drv; info_p->drv_assign_map |= sense_config_buf->drv_asgn_map; info_p->drv_assign_map |= sense_config_buf->spare_asgn_map; info_p->drv_spare_map |= sense_config_buf->spare_asgn_map; } /* end of if no error on id_ldrive */ log_index = log_index + 1; } /* end of if logical drive configured */ } /* end of for log_unit */ geo_ret: kfree(sense_config_buf); bail4: kfree(id_ldrive); bail3: kfree(id_lstatus_buf); bail2: kfree(id_ctlr_buf); }