+++ /dev/null
-/*
- * 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 iss_storagedev@hp.com
- *
- */
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/bio.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/major.h>
-#include <linux/fs.h>
-#include <linux/blkpg.h>
-#include <linux/timer.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/init.h>
-#include <linux/hdreg.h>
-#include <linux/mutex.h>
-#include <linux/spinlock.h>
-#include <linux/blkdev.h>
-#include <linux/genhd.h>
-#include <linux/scatterlist.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-
-#define SMART2_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
-
-#define DRIVER_NAME "Compaq SMART2 Driver (v 2.6.0)"
-#define DRIVER_VERSION SMART2_DRIVER_VERSION(2,6,0)
-
-/* Embedded module documentation macros - see modules.h */
-/* Original author Chris Frantz - Compaq Computer Corporation */
-MODULE_AUTHOR("Compaq Computer Corporation");
-MODULE_DESCRIPTION("Driver for Compaq Smart2 Array Controllers version 2.6.0");
-MODULE_LICENSE("GPL");
-
-#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
-
-#define CPQARRAY_DMA_MASK 0xFFFFFFFF /* 32 bit DMA */
-
-static DEFINE_MUTEX(cpqarray_mutex);
-static int nr_ctlr;
-static ctlr_info_t *hba[MAX_CTLR];
-
-static int eisa[8];
-
-#define NR_PRODUCTS ARRAY_SIZE(products)
-
-/* 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[] = {
- { 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 },
- { 0x40480E11, "Compaq Raid LC2", &smart4_access },
- { 0x40500E11, "Smart Array 4200", &smart4_access },
- { 0x40510E11, "Smart Array 4250ES", &smart4_access },
- { 0x40580E11, "Smart Array 431", &smart4_access },
-};
-
-/* define the PCI info for the PCI cards this driver can control */
-static const struct pci_device_id cpqarray_pci_device_id[] =
-{
- { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX,
- 0x0E11, 0x4058, 0, 0, 0}, /* SA431 */
- { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX,
- 0x0E11, 0x4051, 0, 0, 0}, /* SA4250ES */
- { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_COMPAQ_42XX,
- 0x0E11, 0x4050, 0, 0, 0}, /* SA4200 */
- { PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C1510,
- 0x0E11, 0x4048, 0, 0, 0}, /* LC2 */
- { PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C1510,
- 0x0E11, 0x4040, 0, 0, 0}, /* Integrated Array */
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
- 0x0E11, 0x4034, 0, 0, 0}, /* SA 221 */
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
- 0x0E11, 0x4033, 0, 0, 0}, /* SA 3100ES*/
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
- 0x0E11, 0x4032, 0, 0, 0}, /* SA 3200*/
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
- 0x0E11, 0x4031, 0, 0, 0}, /* SA 2SL*/
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_SMART2P,
- 0x0E11, 0x4030, 0, 0, 0}, /* SA 2P */
- { 0 }
-};
-
-MODULE_DEVICE_TABLE(pci, cpqarray_pci_device_id);
-
-static struct gendisk *ida_gendisk[MAX_CTLR][NWD];
-
-/* 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)
-
-static int cpqarray_pci_init(ctlr_info_t *c, struct pci_dev *pdev);
-static void __iomem *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, int get_from_pool);
-static void cmd_free(ctlr_info_t *h, cmdlist_t *c, int got_from_pool);
-
-static void free_hba(int i);
-static int alloc_cpqarray_hba(void);
-
-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_unlocked_open(struct block_device *bdev, fmode_t mode);
-static void ida_release(struct gendisk *disk, fmode_t mode);
-static int ida_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg);
-static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo);
-static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io);
-
-static void do_ida_request(struct request_queue *q);
-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_command(cmdlist_t *cmd, int timeout);
-
-static irqreturn_t do_ida_intr(int irq, void *dev_id);
-static void ida_timer(unsigned long tdata);
-static int ida_revalidate(struct gendisk *disk);
-static int revalidate_allvol(ctlr_info_t *host);
-static int cpqarray_register_ctlr(int ctlr, struct pci_dev *pdev);
-
-#ifdef CONFIG_PROC_FS
-static void ida_procinit(int i);
-#else
-static void ida_procinit(int i) {}
-#endif
-
-static inline drv_info_t *get_drv(struct gendisk *disk)
-{
- return disk->private_data;
-}
-
-static inline ctlr_info_t *get_host(struct gendisk *disk)
-{
- return disk->queue->queuedata;
-}
-
-
-static const struct block_device_operations ida_fops = {
- .owner = THIS_MODULE,
- .open = ida_unlocked_open,
- .release = ida_release,
- .ioctl = ida_ioctl,
- .getgeo = ida_getgeo,
- .revalidate_disk= ida_revalidate,
-};
-
-
-#ifdef CONFIG_PROC_FS
-
-static struct proc_dir_entry *proc_array;
-static const struct file_operations ida_proc_fops;
-
-/*
- * Get us a file in /proc/array that says something about each controller.
- * Create /proc/array if it doesn't exist yet.
- */
-static void __init ida_procinit(int i)
-{
- if (proc_array == NULL) {
- proc_array = proc_mkdir("driver/cpqarray", NULL);
- if (!proc_array) return;
- }
-
- proc_create_data(hba[i]->devname, 0, proc_array, &ida_proc_fops, hba[i]);
-}
-
-/*
- * Report information about this controller.
- */
-static int ida_proc_show(struct seq_file *m, void *v)
-{
- int i, ctlr;
- ctlr_info_t *h = (ctlr_info_t*)m->private;
- drv_info_t *drv;
-#ifdef CPQ_PROC_PRINT_QUEUES
- cmdlist_t *c;
- unsigned long flags;
-#endif
-
- ctlr = h->ctlr;
- seq_printf(m, "%s: Compaq %s Controller\n"
- " Board ID: 0x%08lx\n"
- " Firmware Revision: %c%c%c%c\n"
- " Controller Sig: 0x%08lx\n"
- " Memory Address: 0x%08lx\n"
- " I/O Port: 0x%04x\n"
- " IRQ: %d\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->io_mem_addr, (unsigned int)h->intr,
- h->log_drives, h->phys_drives,
- h->Qdepth, h->maxQsinceinit);
-
- seq_puts(m, "Logical Drive Info:\n");
-
- for(i=0; i<h->log_drives; i++) {
- drv = &h->drv[i];
- seq_printf(m, "ida/c%dd%d: blksz=%d nr_blks=%d\n",
- ctlr, i, drv->blk_size, drv->nr_blks);
- }
-
-#ifdef CPQ_PROC_PRINT_QUEUES
- spin_lock_irqsave(IDA_LOCK(h->ctlr), flags);
- seq_puts(m, "\nCurrent Queues:\n");
-
- c = h->reqQ;
- seq_printf(m, "reqQ = %p", c);
- if (c) c=c->next;
- while(c && c != h->reqQ) {
- seq_printf(m, "->%p", c);
- c=c->next;
- }
-
- c = h->cmpQ;
- seq_printf(m, "\ncmpQ = %p", c);
- if (c) c=c->next;
- while(c && c != h->cmpQ) {
- seq_printf(m, "->%p", c);
- c=c->next;
- }
-
- seq_putc(m, '\n');
- spin_unlock_irqrestore(IDA_LOCK(h->ctlr), flags);
-#endif
- seq_printf(m, "nr_allocs = %d\nnr_frees = %d\n",
- h->nr_allocs, h->nr_frees);
- return 0;
-}
-
-static int ida_proc_open(struct inode *inode, struct file *file)
-{
- return single_open(file, ida_proc_show, PDE_DATA(inode));
-}
-
-static const struct file_operations ida_proc_fops = {
- .owner = THIS_MODULE,
- .open = ida_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif /* CONFIG_PROC_FS */
-
-module_param_array(eisa, int, NULL, 0);
-
-static void release_io_mem(ctlr_info_t *c)
-{
- /* if IO mem was not protected do nothing */
- if( c->io_mem_addr == 0)
- return;
- release_region(c->io_mem_addr, c->io_mem_length);
- c->io_mem_addr = 0;
- c->io_mem_length = 0;
-}
-
-static void cpqarray_remove_one(int i)
-{
- int j;
- char buff[4];
-
- /* sendcmd will turn off interrupt, and send the flush...
- * To write all data in the battery backed cache to disks
- * no data returned, but don't want to send NULL to sendcmd */
- if( sendcmd(FLUSH_CACHE, i, buff, 4, 0, 0, 0))
- {
- printk(KERN_WARNING "Unable to flush cache on controller %d\n",
- i);
- }
- free_irq(hba[i]->intr, hba[i]);
- iounmap(hba[i]->vaddr);
- unregister_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname);
- del_timer(&hba[i]->timer);
- remove_proc_entry(hba[i]->devname, proc_array);
- pci_free_consistent(hba[i]->pci_dev,
- NR_CMDS * sizeof(cmdlist_t), (hba[i]->cmd_pool),
- hba[i]->cmd_pool_dhandle);
- kfree(hba[i]->cmd_pool_bits);
- for(j = 0; j < NWD; j++) {
- if (ida_gendisk[i][j]->flags & GENHD_FL_UP)
- del_gendisk(ida_gendisk[i][j]);
- put_disk(ida_gendisk[i][j]);
- }
- blk_cleanup_queue(hba[i]->queue);
- release_io_mem(hba[i]);
- free_hba(i);
-}
-
-static void cpqarray_remove_one_pci(struct pci_dev *pdev)
-{
- int i;
- ctlr_info_t *tmp_ptr;
-
- if (pci_get_drvdata(pdev) == NULL) {
- printk( KERN_ERR "cpqarray: Unable to remove device \n");
- return;
- }
-
- tmp_ptr = pci_get_drvdata(pdev);
- i = tmp_ptr->ctlr;
- if (hba[i] == NULL) {
- printk(KERN_ERR "cpqarray: controller %d appears to have"
- "already been removed \n", i);
- return;
- }
- pci_set_drvdata(pdev, NULL);
-
- cpqarray_remove_one(i);
-}
-
-/* removing an instance that was not removed automatically..
- * must be an eisa card.
- */
-static void cpqarray_remove_one_eisa(int i)
-{
- if (hba[i] == NULL) {
- printk(KERN_ERR "cpqarray: controller %d appears to have"
- "already been removed \n", i);
- return;
- }
- cpqarray_remove_one(i);
-}
-
-/* pdev is NULL for eisa */
-static int cpqarray_register_ctlr(int i, struct pci_dev *pdev)
-{
- struct request_queue *q;
- int j;
-
- /*
- * register block devices
- * Find disks and fill in structs
- * Get an interrupt, set the Q depth and get into /proc
- */
-
- /* If this successful it should insure that we are the only */
- /* instance of the driver */
- if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) {
- goto Enomem4;
- }
- hba[i]->access.set_intr_mask(hba[i], 0);
- if (request_irq(hba[i]->intr, do_ida_intr, IRQF_SHARED,
- hba[i]->devname, hba[i]))
- {
- printk(KERN_ERR "cpqarray: Unable to get irq %d for %s\n",
- hba[i]->intr, hba[i]->devname);
- goto Enomem3;
- }
-
- for (j=0; j<NWD; j++) {
- ida_gendisk[i][j] = alloc_disk(1 << NWD_SHIFT);
- if (!ida_gendisk[i][j])
- goto Enomem2;
- }
-
- hba[i]->cmd_pool = pci_alloc_consistent(
- hba[i]->pci_dev, NR_CMDS * sizeof(cmdlist_t),
- &(hba[i]->cmd_pool_dhandle));
- hba[i]->cmd_pool_bits = kcalloc(
- DIV_ROUND_UP(NR_CMDS, BITS_PER_LONG), sizeof(unsigned long),
- GFP_KERNEL);
-
- if (!hba[i]->cmd_pool_bits || !hba[i]->cmd_pool)
- goto Enomem1;
-
- memset(hba[i]->cmd_pool, 0, NR_CMDS * sizeof(cmdlist_t));
- printk(KERN_INFO "cpqarray: Finding drives on %s",
- hba[i]->devname);
-
- spin_lock_init(&hba[i]->lock);
- q = blk_init_queue(do_ida_request, &hba[i]->lock);
- if (!q)
- goto Enomem1;
-
- hba[i]->queue = q;
- q->queuedata = hba[i];
-
- getgeometry(i);
- start_fwbk(i);
-
- ida_procinit(i);
-
- if (pdev)
- blk_queue_bounce_limit(q, hba[i]->pci_dev->dma_mask);
-
- /* This is a hardware imposed limit. */
- blk_queue_max_segments(q, SG_MAX);
-
- 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);
-
- /* Enable IRQ now that spinlock and rate limit timer are set up */
- hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY);
-
- for(j=0; j<NWD; j++) {
- struct gendisk *disk = ida_gendisk[i][j];
- drv_info_t *drv = &hba[i]->drv[j];
- sprintf(disk->disk_name, "ida/c%dd%d", i, j);
- disk->major = COMPAQ_SMART2_MAJOR + i;
- disk->first_minor = j<<NWD_SHIFT;
- disk->fops = &ida_fops;
- if (j && !drv->nr_blks)
- continue;
- blk_queue_logical_block_size(hba[i]->queue, drv->blk_size);
- set_capacity(disk, drv->nr_blks);
- disk->queue = hba[i]->queue;
- disk->private_data = drv;
- add_disk(disk);
- }
-
- /* done ! */
- return(i);
-
-Enomem1:
- nr_ctlr = i;
- kfree(hba[i]->cmd_pool_bits);
- if (hba[i]->cmd_pool)
- pci_free_consistent(hba[i]->pci_dev, NR_CMDS*sizeof(cmdlist_t),
- hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
-Enomem2:
- while (j--) {
- put_disk(ida_gendisk[i][j]);
- ida_gendisk[i][j] = NULL;
- }
- free_irq(hba[i]->intr, hba[i]);
-Enomem3:
- unregister_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname);
-Enomem4:
- if (pdev)
- pci_set_drvdata(pdev, NULL);
- release_io_mem(hba[i]);
- free_hba(i);
-
- printk( KERN_ERR "cpqarray: out of memory");
-
- return -1;
-}
-
-static int cpqarray_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- int i;
-
- printk(KERN_DEBUG "cpqarray: Device 0x%x has been found at"
- " bus %d dev %d func %d\n",
- pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn),
- PCI_FUNC(pdev->devfn));
- i = alloc_cpqarray_hba();
- if( i < 0 )
- return (-1);
- memset(hba[i], 0, sizeof(ctlr_info_t));
- sprintf(hba[i]->devname, "ida%d", i);
- hba[i]->ctlr = i;
- /* Initialize the pdev driver private data */
- pci_set_drvdata(pdev, hba[i]);
-
- if (cpqarray_pci_init(hba[i], pdev) != 0) {
- pci_set_drvdata(pdev, NULL);
- release_io_mem(hba[i]);
- free_hba(i);
- return -1;
- }
-
- return (cpqarray_register_ctlr(i, pdev));
-}
-
-static struct pci_driver cpqarray_pci_driver = {
- .name = "cpqarray",
- .probe = cpqarray_init_one,
- .remove = cpqarray_remove_one_pci,
- .id_table = cpqarray_pci_device_id,
-};
-
-/*
- * This is it. Find all the controllers and register them.
- * returns the number of block devices registered.
- */
-static int __init cpqarray_init(void)
-{
- int num_cntlrs_reg = 0;
- int i;
- int rc = 0;
-
- /* detect controllers */
- printk(DRIVER_NAME "\n");
-
- rc = pci_register_driver(&cpqarray_pci_driver);
- if (rc)
- return rc;
- cpqarray_eisa_detect();
-
- for (i=0; i < MAX_CTLR; i++) {
- if (hba[i] != NULL)
- num_cntlrs_reg++;
- }
-
- if (num_cntlrs_reg)
- return 0;
- else {
- pci_unregister_driver(&cpqarray_pci_driver);
- return -ENODEV;
- }
-}
-
-/* Function to find the first free pointer into our hba[] array */
-/* Returns -1 if no free entries are left. */
-static int alloc_cpqarray_hba(void)
-{
- int i;
-
- for(i=0; i< MAX_CTLR; i++) {
- if (hba[i] == NULL) {
- hba[i] = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
- if(hba[i]==NULL) {
- printk(KERN_ERR "cpqarray: out of memory.\n");
- return (-1);
- }
- return (i);
- }
- }
- printk(KERN_WARNING "cpqarray: This driver supports a maximum"
- " of 8 controllers.\n");
- return(-1);
-}
-
-static void free_hba(int i)
-{
- kfree(hba[i]);
- hba[i]=NULL;
-}
-
-/*
- * 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, struct pci_dev *pdev)
-{
- ushort vendor_id, device_id, command;
- unchar cache_line_size, latency_timer;
- unchar irq, revision;
- unsigned long addr[6];
- __u32 board_id;
-
- int i;
-
- c->pci_dev = pdev;
- pci_set_master(pdev);
- if (pci_enable_device(pdev)) {
- printk(KERN_ERR "cpqarray: Unable to Enable PCI device\n");
- return -1;
- }
- vendor_id = pdev->vendor;
- device_id = pdev->device;
- revision = pdev->revision;
- irq = pdev->irq;
-
- for(i=0; i<6; i++)
- addr[i] = pci_resource_start(pdev, i);
-
- if (pci_set_dma_mask(pdev, CPQARRAY_DMA_MASK) != 0)
- {
- printk(KERN_ERR "cpqarray: Unable to set DMA mask\n");
- return -1;
- }
-
- pci_read_config_word(pdev, PCI_COMMAND, &command);
- pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size);
- pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_timer);
-
- pci_read_config_dword(pdev, 0x2c, &board_id);
-
- /* check to see if controller has been disabled */
- if(!(command & 0x02)) {
- printk(KERN_WARNING
- "cpqarray: controller appears to be disabled\n");
- return(-1);
- }
-
-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] = %lx\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;
-
- for(i=0; i<6; i++) {
- if (pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE_IO)
- { /* IO space */
- c->io_mem_addr = addr[i];
- c->io_mem_length = pci_resource_end(pdev, i)
- - pci_resource_start(pdev, i) + 1;
- if(!request_region( c->io_mem_addr, c->io_mem_length,
- "cpqarray"))
- {
- printk( KERN_WARNING "cpqarray I/O memory range already in use addr %lx length = %ld\n", c->io_mem_addr, c->io_mem_length);
- c->io_mem_addr = 0;
- c->io_mem_length = 0;
- }
- break;
- }
- }
-
- c->paddr = 0;
- for(i=0; i<6; i++)
- if (!(pci_resource_flags(pdev, i) &
- PCI_BASE_ADDRESS_SPACE_IO)) {
- c->paddr = pci_resource_start (pdev, i);
- break;
- }
- if (!c->paddr)
- return -1;
- c->vaddr = remap_pci_mem(c->paddr, 128);
- if (!c->vaddr)
- return -1;
- c->board_id = board_id;
-
- for(i=0; i<NR_PRODUCTS; i++) {
- if (board_id == products[i].board_id) {
- c->product_name = products[i].product_name;
- c->access = *(products[i].access);
- break;
- }
- }
- if (i == NR_PRODUCTS) {
- printk(KERN_WARNING "cpqarray: 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 void __iomem *remap_pci_mem(ulong base, ulong size)
-{
- ulong page_base = ((ulong) base) & PAGE_MASK;
- ulong page_offs = ((ulong) base) - page_base;
- void __iomem *page_remapped = ioremap(page_base, page_offs+size);
-
- return (page_remapped ? (page_remapped + page_offs) : NULL);
-}
-
-#ifndef MODULE
-/*
- * Config string is a comma separated set of i/o addresses of EISA cards.
- */
-static int cpqarray_setup(char *str)
-{
- int i, ints[9];
-
- (void)get_options(str, ARRAY_SIZE(ints), ints);
-
- for(i=0; i<ints[0] && i<8; i++)
- eisa[i] = ints[i+1];
- return 1;
-}
-
-__setup("smart2=", cpqarray_setup);
-
-#endif
-
-/*
- * Find an EISA controller's signature. Set up an hba if we find it.
- */
-static int cpqarray_eisa_detect(void)
-{
- int i=0, j;
- __u32 board_id;
- int intr;
- int ctlr;
- int num_ctlr = 0;
-
- while(i<8 && eisa[i]) {
- ctlr = alloc_cpqarray_hba();
- if(ctlr == -1)
- break;
- board_id = inl(eisa[i]+0xC80);
- for(j=0; j < NR_PRODUCTS; j++)
- if (board_id == products[j].board_id)
- break;
-
- if (j == NR_PRODUCTS) {
- printk(KERN_WARNING "cpqarray: Sorry, I don't know how"
- " to access the SMART Array controller %08lx\n", (unsigned long)board_id);
- continue;
- }
-
- memset(hba[ctlr], 0, sizeof(ctlr_info_t));
- hba[ctlr]->io_mem_addr = eisa[i];
- hba[ctlr]->io_mem_length = 0x7FF;
- if(!request_region(hba[ctlr]->io_mem_addr,
- hba[ctlr]->io_mem_length,
- "cpqarray"))
- {
- printk(KERN_WARNING "cpqarray: I/O range already in "
- "use addr = %lx length = %ld\n",
- hba[ctlr]->io_mem_addr,
- hba[ctlr]->io_mem_length);
- free_hba(ctlr);
- continue;
- }
-
- /*
- * 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[ctlr]->intr = intr;
- sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr);
- hba[ctlr]->product_name = products[j].product_name;
- hba[ctlr]->access = *(products[j].access);
- hba[ctlr]->ctlr = ctlr;
- hba[ctlr]->board_id = board_id;
- hba[ctlr]->pci_dev = NULL; /* not PCI */
-
-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);
-);
-
- num_ctlr++;
- i++;
-
- if (cpqarray_register_ctlr(ctlr, NULL) == -1)
- printk(KERN_WARNING
- "cpqarray: Can't register EISA controller %d\n",
- ctlr);
-
- }
-
- return num_ctlr;
-}
-
-/*
- * Open. Make sure the device is really there.
- */
-static int ida_open(struct block_device *bdev, fmode_t mode)
-{
- drv_info_t *drv = get_drv(bdev->bd_disk);
- ctlr_info_t *host = get_host(bdev->bd_disk);
-
- DBGINFO(printk("ida_open %s\n", bdev->bd_disk->disk_name));
- /*
- * Root is allowed to open raw volume zero even if it's 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 (!drv->nr_blks) {
- if (!capable(CAP_SYS_RAWIO))
- return -ENXIO;
- if (!capable(CAP_SYS_ADMIN) && drv != host->drv)
- return -ENXIO;
- }
- host->usage_count++;
- return 0;
-}
-
-static int ida_unlocked_open(struct block_device *bdev, fmode_t mode)
-{
- int ret;
-
- mutex_lock(&cpqarray_mutex);
- ret = ida_open(bdev, mode);
- mutex_unlock(&cpqarray_mutex);
-
- return ret;
-}
-
-/*
- * Close. Sync first.
- */
-static void ida_release(struct gendisk *disk, fmode_t mode)
-{
- ctlr_info_t *host;
-
- mutex_lock(&cpqarray_mutex);
- host = get_host(disk);
- host->usage_count--;
- mutex_unlock(&cpqarray_mutex);
-}
-
-/*
- * 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(struct request_queue *q)
-{
- ctlr_info_t *h = q->queuedata;
- cmdlist_t *c;
- struct request *creq;
- struct scatterlist tmp_sg[SG_MAX];
- int i, dir, seg;
-
-queue_next:
- creq = blk_peek_request(q);
- if (!creq)
- goto startio;
-
- BUG_ON(creq->nr_phys_segments > SG_MAX);
-
- if ((c = cmd_alloc(h,1)) == NULL)
- goto startio;
-
- blk_start_request(creq);
-
- c->ctlr = h->ctlr;
- c->hdr.unit = (drv_info_t *)(creq->rq_disk->private_data) - h->drv;
- c->hdr.size = sizeof(rblk_t) >> 2;
- c->size += sizeof(rblk_t);
-
- c->req.hdr.blk = blk_rq_pos(creq);
- c->rq = creq;
-DBGPX(
- printk("sector=%d, nr_sectors=%u\n",
- blk_rq_pos(creq), blk_rq_sectors(creq));
-);
- sg_init_table(tmp_sg, SG_MAX);
- seg = blk_rq_map_sg(q, creq, tmp_sg);
-
- /* Now do all the DMA Mappings */
- if (rq_data_dir(creq) == READ)
- dir = PCI_DMA_FROMDEVICE;
- else
- dir = PCI_DMA_TODEVICE;
- for( i=0; i < seg; i++)
- {
- c->req.sg[i].size = tmp_sg[i].length;
- c->req.sg[i].addr = (__u32) pci_map_page(h->pci_dev,
- sg_page(&tmp_sg[i]),
- tmp_sg[i].offset,
- tmp_sg[i].length, dir);
- }
-DBGPX( printk("Submitting %u sectors in %d segments\n", blk_rq_sectors(creq), seg); );
- c->req.hdr.sg_cnt = seg;
- c->req.hdr.blk_cnt = blk_rq_sectors(creq);
- c->req.hdr.cmd = (rq_data_dir(creq) == 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;
-
- goto queue_next;
-
-startio:
- 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);
- }
-}
-
-/*
- * Mark all buffers that cmd was responsible for
- */
-static inline void complete_command(cmdlist_t *cmd, int timeout)
-{
- struct request *rq = cmd->rq;
- int error = 0;
- int i, ddir;
-
- if (cmd->req.hdr.rcode & RCODE_NONFATAL &&
- (hba[cmd->ctlr]->misc_tflags & MISC_NONFATAL_WARN) == 0) {
- printk(KERN_NOTICE "Non Fatal error on ida/c%dd%d\n",
- cmd->ctlr, cmd->hdr.unit);
- hba[cmd->ctlr]->misc_tflags |= MISC_NONFATAL_WARN;
- }
- if (cmd->req.hdr.rcode & RCODE_FATAL) {
- printk(KERN_WARNING "Fatal error on ida/c%dd%d\n",
- cmd->ctlr, cmd->hdr.unit);
- error = -EIO;
- }
- if (cmd->req.hdr.rcode & RCODE_INVREQ) {
- printk(KERN_WARNING "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);
- error = -EIO;
- }
- if (timeout)
- error = -EIO;
- /* unmap the DMA mapping for all the scatter gather elements */
- if (cmd->req.hdr.cmd == IDA_READ)
- ddir = PCI_DMA_FROMDEVICE;
- else
- ddir = PCI_DMA_TODEVICE;
- for(i=0; i<cmd->req.hdr.sg_cnt; i++)
- pci_unmap_page(hba[cmd->ctlr]->pci_dev, cmd->req.sg[i].addr,
- cmd->req.sg[i].size, ddir);
-
- DBGPX(printk("Done with %p\n", rq););
- __blk_end_request_all(rq, error);
-}
-
-/*
- * 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 irqreturn_t do_ida_intr(int irq, void *dev_id)
-{
- 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 IRQ_NONE;
-
- /*
- * If there are completed commands in the completion queue,
- * we had better do something about it.
- */
- spin_lock_irqsave(IDA_LOCK(h->ctlr), flags);
- if (istat & FIFO_NOT_EMPTY) {
- while((a = h->access.command_completed(h))) {
- 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);
- /* Check for invalid command.
- * Controller returns command error,
- * But rcode = 0.
- */
-
- if((a1 & 0x03) && (c->req.hdr.rcode == 0))
- {
- c->req.hdr.rcode = RCODE_INVREQ;
- }
- if (c->type == CMD_RWREQ) {
- complete_command(c, 0);
- cmd_free(h, c, 1);
- } else if (c->type == CMD_IOCTL_PEND) {
- c->type = CMD_IOCTL_DONE;
- }
- continue;
- }
- }
- }
-
- /*
- * See if we can queue up some more IO
- */
- do_ida_request(h->queue);
- spin_unlock_irqrestore(IDA_LOCK(h->ctlr), flags);
- return IRQ_HANDLED;
-}
-
-/*
- * 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;
-}
-
-static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo)
-{
- drv_info_t *drv = get_drv(bdev->bd_disk);
-
- if (drv->cylinders) {
- geo->heads = drv->heads;
- geo->sectors = drv->sectors;
- geo->cylinders = drv->cylinders;
- } else {
- geo->heads = 0xff;
- geo->sectors = 0x3f;
- geo->cylinders = drv->nr_blks / (0xff*0x3f);
- }
-
- return 0;
-}
-
-/*
- * ida_ioctl does some miscellaneous stuff like reporting drive geometry,
- * setting readahead and submitting commands from userspace to the controller.
- */
-static int ida_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg)
-{
- drv_info_t *drv = get_drv(bdev->bd_disk);
- ctlr_info_t *host = get_host(bdev->bd_disk);
- int error;
- ida_ioctl_t __user *io = (ida_ioctl_t __user *)arg;
- ida_ioctl_t *my_io;
-
- switch(cmd) {
- case IDAGETDRVINFO:
- if (copy_to_user(&io->c.drv, drv, sizeof(drv_info_t)))
- return -EFAULT;
- return 0;
- case IDAPASSTHRU:
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
- my_io = kmalloc(sizeof(ida_ioctl_t), GFP_KERNEL);
- if (!my_io)
- return -ENOMEM;
- error = -EFAULT;
- if (copy_from_user(my_io, io, sizeof(*my_io)))
- goto out_passthru;
- error = ida_ctlr_ioctl(host, drv - host->drv, my_io);
- if (error)
- goto out_passthru;
- error = -EFAULT;
- if (copy_to_user(io, my_io, sizeof(*my_io)))
- goto out_passthru;
- error = 0;
-out_passthru:
- kfree(my_io);
- return error;
- case IDAGETCTLRSIG:
- if (!arg) return -EINVAL;
- if (put_user(host->ctlr_sig, (int __user *)arg))
- return -EFAULT;
- return 0;
- case IDAREVALIDATEVOLS:
- if (MINOR(bdev->bd_dev) != 0)
- return -ENXIO;
- return revalidate_allvol(host);
- case IDADRIVERVERSION:
- if (!arg) return -EINVAL;
- if (put_user(DRIVER_VERSION, (unsigned long __user *)arg))
- return -EFAULT;
- return 0;
- case IDAGETPCIINFO:
- {
-
- ida_pci_info_struct pciinfo;
-
- if (!arg) return -EINVAL;
- memset(&pciinfo, 0, sizeof(pciinfo));
- pciinfo.bus = host->pci_dev->bus->number;
- pciinfo.dev_fn = host->pci_dev->devfn;
- pciinfo.board_id = host->board_id;
- if(copy_to_user((void __user *) arg, &pciinfo,
- sizeof( ida_pci_info_struct)))
- return -EFAULT;
- return(0);
- }
-
- default:
- return -EINVAL;
- }
-
-}
-
-static int ida_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long param)
-{
- int ret;
-
- mutex_lock(&cpqarray_mutex);
- ret = ida_locked_ioctl(bdev, mode, cmd, param);
- mutex_unlock(&cpqarray_mutex);
-
- return ret;
-}
-
-/*
- * 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(ctlr_info_t *h, int dsk, ida_ioctl_t *io)
-{
- int ctlr = h->ctlr;
- cmdlist_t *c;
- void *p = NULL;
- unsigned long flags;
- int error;
-
- if ((c = cmd_alloc(h, 0)) == 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 = memdup_user(io->sg[0].addr, io->sg[0].size);
- if (IS_ERR(p)) {
- error = PTR_ERR(p);
- cmd_free(h, c, 0);
- return error;
- }
- c->req.hdr.blk = pci_map_single(h->pci_dev, &(io->c),
- sizeof(ida_ioctl_t),
- PCI_DMA_BIDIRECTIONAL);
- c->req.sg[0].size = io->sg[0].size;
- c->req.sg[0].addr = pci_map_single(h->pci_dev, p,
- c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
- c->req.hdr.sg_cnt = 1;
- break;
- case IDA_READ:
- case READ_FLASH_ROM:
- case SENSE_CONTROLLER_PERFORMANCE:
- p = kmalloc(io->sg[0].size, GFP_KERNEL);
- if (!p)
- {
- error = -ENOMEM;
- cmd_free(h, c, 0);
- return(error);
- }
-
- c->req.sg[0].size = io->sg[0].size;
- c->req.sg[0].addr = pci_map_single(h->pci_dev, p,
- c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
- c->req.hdr.sg_cnt = 1;
- break;
- case IDA_WRITE:
- case IDA_WRITE_MEDIA:
- case DIAG_PASS_THRU:
- case COLLECT_BUFFER:
- case WRITE_FLASH_ROM:
- p = memdup_user(io->sg[0].addr, io->sg[0].size);
- if (IS_ERR(p)) {
- error = PTR_ERR(p);
- cmd_free(h, c, 0);
- return error;
- }
- c->req.sg[0].size = io->sg[0].size;
- c->req.sg[0].addr = pci_map_single(h->pci_dev, p,
- c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
- c->req.hdr.sg_cnt = 1;
- break;
- default:
- c->req.sg[0].size = sizeof(io->c);
- c->req.sg[0].addr = pci_map_single(h->pci_dev,&io->c,
- c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
- c->req.hdr.sg_cnt = 1;
- }
-
- /* Put the request on the tail of the request queue */
- spin_lock_irqsave(IDA_LOCK(ctlr), flags);
- addQ(&h->reqQ, c);
- h->Qdepth++;
- start_io(h);
- spin_unlock_irqrestore(IDA_LOCK(ctlr), flags);
-
- /* Wait for completion */
- while(c->type != CMD_IOCTL_DONE)
- schedule();
-
- /* Unmap the DMA */
- pci_unmap_single(h->pci_dev, c->req.sg[0].addr, c->req.sg[0].size,
- PCI_DMA_BIDIRECTIONAL);
- /* Post submit processing */
- switch(io->cmd) {
- case PASSTHRU_A:
- pci_unmap_single(h->pci_dev, c->req.hdr.blk,
- sizeof(ida_ioctl_t),
- PCI_DMA_BIDIRECTIONAL);
- case IDA_READ:
- case DIAG_PASS_THRU:
- case SENSE_CONTROLLER_PERFORMANCE:
- case READ_FLASH_ROM:
- if (copy_to_user(io->sg[0].addr, p, io->sg[0].size)) {
- kfree(p);
- return -EFAULT;
- }
- /* fall through and free p */
- case IDA_WRITE:
- case IDA_WRITE_MEDIA:
- case COLLECT_BUFFER:
- case WRITE_FLASH_ROM:
- kfree(p);
- break;
- default:;
- /* Nothing to do */
- }
-
- io->rcode = c->req.hdr.rcode;
- cmd_free(h, c, 0);
- return(0);
-}
-
-/*
- * 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, int get_from_pool)
-{
- cmdlist_t * c;
- int i;
- dma_addr_t cmd_dhandle;
-
- if (!get_from_pool) {
- c = (cmdlist_t*)pci_alloc_consistent(h->pci_dev,
- sizeof(cmdlist_t), &cmd_dhandle);
- 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&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0);
- c = h->cmd_pool + i;
- cmd_dhandle = h->cmd_pool_dhandle + i*sizeof(cmdlist_t);
- h->nr_allocs++;
- }
-
- memset(c, 0, sizeof(cmdlist_t));
- c->busaddr = cmd_dhandle;
- return c;
-}
-
-static void cmd_free(ctlr_info_t *h, cmdlist_t *c, int got_from_pool)
-{
- int i;
-
- if (!got_from_pool) {
- pci_free_consistent(h->pci_dev, sizeof(cmdlist_t), c,
- 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++;
- }
-}
-
-/***********************************************************************
- 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, 1);
- if(!c)
- return IO_ERROR;
- 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) pci_map_single(info_p->pci_dev,
- buff, c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
- /*
- * 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(KERN_WARNING "cpqarray ida%d: idaSendPciCmd FIFO full,"
- " waiting!\n", ctlr);
-);
- }
- /*
- * Send the cmd
- */
- info_p->access.submit_command(info_p, c);
- complete = pollcomplete(ctlr);
-
- pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr,
- c->req.sg[0].size, PCI_DMA_BIDIRECTIONAL);
- if (complete != 1) {
- if (complete != c->busaddr) {
- printk( KERN_WARNING
- "cpqarray ida%d: idaSendPciCmd "
- "Invalid command list address returned! (%08lx)\n",
- ctlr, (unsigned long)complete);
- cmd_free(info_p, c, 1);
- return (IO_ERROR);
- }
- } else {
- printk( KERN_WARNING
- "cpqarray ida%d: idaSendPciCmd Timeout out, "
- "No command list address returned!\n",
- ctlr);
- cmd_free(info_p, c, 1);
- return (IO_ERROR);
- }
-
- if (c->req.hdr.rcode & 0x00FE) {
- if (!(c->req.hdr.rcode & BIG_PROBLEM)) {
- printk( KERN_WARNING
- "cpqarray 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, 1);
- return (IO_ERROR);
- }
- }
- cmd_free(info_p, c, 1);
- return (IO_OK);
-}
-
-/*
- * revalidate_allvol is for online array config utilities. After a
- * utility reconfigures the drives in the array, it can use this function
- * (through an ioctl) to make the driver zap any previous disk structs for
- * that controller and get new ones.
- *
- * Right now I'm using the getgeometry() function to do this, but this
- * function should probably be finer grained and allow you to revalidate one
- * particualar logical volume (instead of all of them on a particular
- * controller).
- */
-static int revalidate_allvol(ctlr_info_t *host)
-{
- int ctlr = host->ctlr;
- int i;
- unsigned long flags;
-
- spin_lock_irqsave(IDA_LOCK(ctlr), flags);
- if (host->usage_count > 1) {
- spin_unlock_irqrestore(IDA_LOCK(ctlr), flags);
- printk(KERN_WARNING "cpqarray: Device busy for volume"
- " revalidation (usage=%d)\n", host->usage_count);
- return -EBUSY;
- }
- host->usage_count++;
- spin_unlock_irqrestore(IDA_LOCK(ctlr), flags);
-
- /*
- * Set the partition and block size structures for all volumes
- * on this controller to zero. We will reread all of this data
- */
- set_capacity(ida_gendisk[ctlr][0], 0);
- for (i = 1; i < NWD; i++) {
- struct gendisk *disk = ida_gendisk[ctlr][i];
- if (disk->flags & GENHD_FL_UP)
- del_gendisk(disk);
- }
- memset(host->drv, 0, sizeof(drv_info_t)*NWD);
-
- /*
- * Tell the array controller not to give us any interrupts while
- * we check the new geometry. Then turn interrupts back on when
- * we're done.
- */
- host->access.set_intr_mask(host, 0);
- getgeometry(ctlr);
- host->access.set_intr_mask(host, FIFO_NOT_EMPTY);
-
- for(i=0; i<NWD; i++) {
- struct gendisk *disk = ida_gendisk[ctlr][i];
- drv_info_t *drv = &host->drv[i];
- if (i && !drv->nr_blks)
- continue;
- blk_queue_logical_block_size(host->queue, drv->blk_size);
- set_capacity(disk, drv->nr_blks);
- disk->queue = host->queue;
- disk->private_data = drv;
- if (i)
- add_disk(disk);
- }
-
- host->usage_count--;
- return 0;
-}
-
-static int ida_revalidate(struct gendisk *disk)
-{
- drv_info_t *drv = disk->private_data;
- set_capacity(disk, drv->nr_blks);
- 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)
- && (hba[ctlr]->board_id != 0x40480E11) )
-
- /* Not a Integrated Raid, so there is nothing for us to do */
- return;
- printk(KERN_DEBUG "cpqarray: Starting firmware's background"
- " processing\n");
- /* Command does not return anything, but idasend command needs a
- buffer */
- id_ctlr_buf = kmalloc(sizeof(id_ctlr_t), GFP_KERNEL);
- if(id_ctlr_buf==NULL)
- {
- printk(KERN_WARNING "cpqarray: 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 "cpqarray: 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];
- int i;
-
- info_p->log_drv_map = 0;
-
- id_ldrive = kzalloc(sizeof(id_log_drv_t), GFP_KERNEL);
- if (!id_ldrive) {
- printk( KERN_ERR "cpqarray: out of memory.\n");
- goto err_0;
- }
-
- id_ctlr_buf = kzalloc(sizeof(id_ctlr_t), GFP_KERNEL);
- if (!id_ctlr_buf) {
- printk( KERN_ERR "cpqarray: out of memory.\n");
- goto err_1;
- }
-
- id_lstatus_buf = kzalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL);
- if (!id_lstatus_buf) {
- printk( KERN_ERR "cpqarray: out of memory.\n");
- goto err_2;
- }
-
- sense_config_buf = kzalloc(sizeof(config_t), GFP_KERNEL);
- if (!sense_config_buf) {
- printk( KERN_ERR "cpqarray: out of memory.\n");
- goto err_3;
- }
-
- 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.
- */
- printk(KERN_ERR "cpqarray: error sending ID controller\n");
- goto err_4;
- }
-
- info_p->log_drives = id_ctlr_buf->nr_drvs;
- for(i=0;i<4;i++)
- info_p->firm_rev[i] = id_ctlr_buf->firm_rev[i];
- 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(KERN_WARNING "cpqarray 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( KERN_WARNING
- "cpqarray 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 err_4;
- }
- /*
- 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(KERN_INFO "cpqarray 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;
- printk(KERN_ERR "cpqarray: error sending sense config\n");
- goto err_4;
- }
-
- 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 */
-
- /* Free all the buffers and return */
-err_4:
- kfree(sense_config_buf);
-err_3:
- kfree(id_lstatus_buf);
-err_2:
- kfree(id_ctlr_buf);
-err_1:
- kfree(id_ldrive);
-err_0:
- return;
-}
-
-static void __exit cpqarray_exit(void)
-{
- int i;
-
- pci_unregister_driver(&cpqarray_pci_driver);
-
- /* Double check that all controller entries have been removed */
- for(i=0; i<MAX_CTLR; i++) {
- if (hba[i] != NULL) {
- printk(KERN_WARNING "cpqarray: Removing EISA "
- "controller %d\n", i);
- cpqarray_remove_one_eisa(i);
- }
- }
-
- remove_proc_entry("driver/cpqarray", NULL);
-}
-
-module_init(cpqarray_init)
-module_exit(cpqarray_exit)
projects / cascardo / linux.git / commitdiff