/*
- * Disk Array driver for HP SA 5xxx and 6xxx Controllers
- * Copyright 2000, 2006 Hewlett-Packard Development Company, L.P.
+ * Disk Array driver for HP Smart Array controllers.
+ * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT. See the GNU General Public License for more details.
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307, USA.
*
* Questions/Comments/Bugfixes to iss_storagedev@hp.com
*
*/
-#include <linux/config.h> /* CONFIG_PROC_FS */
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/smp_lock.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/init.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
#include <linux/hdreg.h>
#include <linux/spinlock.h>
#include <linux/compat.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/blkdev.h>
#include <linux/genhd.h>
#include <linux/completion.h>
+#include <scsi/scsi.h>
+#include <scsi/sg.h>
+#include <scsi/scsi_ioctl.h>
+#include <linux/cdrom.h>
+#include <linux/scatterlist.h>
+#include <linux/kthread.h>
#define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin))
-#define DRIVER_NAME "HP CISS Driver (v 2.6.10)"
-#define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,10)
+#define DRIVER_NAME "HP CISS Driver (v 3.6.20)"
+#define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20)
/* Embedded module documentation macros - see modules.h */
MODULE_AUTHOR("Hewlett-Packard Company");
-MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.10");
+MODULE_DESCRIPTION("Driver for HP Smart Array Controllers");
MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
- " SA6i P600 P800 P400 P400i E200 E200i");
+ " SA6i P600 P800 P400 P400i E200 E200i E500 P700m"
+ " Smart Array G2 Series SAS/SATA Controllers");
+MODULE_VERSION("3.6.20");
MODULE_LICENSE("GPL");
+static int cciss_allow_hpsa;
+module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(cciss_allow_hpsa,
+ "Prevent cciss driver from accessing hardware known to be "
+ " supported by the hpsa driver");
+
#include "cciss_cmd.h"
#include "cciss.h"
#include <linux/cciss_ioctl.h>
/* define the PCI info for the cards we can control */
static const struct pci_device_id cciss_pci_device_id[] = {
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS,
- 0x0E11, 0x4070, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
- 0x0E11, 0x4080, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
- 0x0E11, 0x4082, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB,
- 0x0E11, 0x4083, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
- 0x0E11, 0x409A, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
- 0x0E11, 0x409B, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
- 0x0E11, 0x409C, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
- 0x0E11, 0x409D, 0, 0, 0},
- { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC,
- 0x0E11, 0x4091, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA,
- 0x103C, 0x3225, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
- 0x103c, 0x3223, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
- 0x103c, 0x3234, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC,
- 0x103c, 0x3235, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3211, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3212, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3213, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3214, 0, 0, 0},
- { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD,
- 0x103c, 0x3215, 0, 0, 0},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C},
+ {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
+ {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
{0,}
};
-MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
-#define NR_PRODUCTS ARRAY_SIZE(products)
+MODULE_DEVICE_TABLE(pci, cciss_pci_device_id);
/* board_id = Subsystem Device ID & Vendor ID
* product = Marketing Name for the board
- * access = Address of the struct of function pointers
+ * access = Address of the struct of function pointers
*/
static struct board_type products[] = {
- { 0x40700E11, "Smart Array 5300", &SA5_access },
- { 0x40800E11, "Smart Array 5i", &SA5B_access},
- { 0x40820E11, "Smart Array 532", &SA5B_access},
- { 0x40830E11, "Smart Array 5312", &SA5B_access},
- { 0x409A0E11, "Smart Array 641", &SA5_access},
- { 0x409B0E11, "Smart Array 642", &SA5_access},
- { 0x409C0E11, "Smart Array 6400", &SA5_access},
- { 0x409D0E11, "Smart Array 6400 EM", &SA5_access},
- { 0x40910E11, "Smart Array 6i", &SA5_access},
- { 0x3225103C, "Smart Array P600", &SA5_access},
- { 0x3223103C, "Smart Array P800", &SA5_access},
- { 0x3234103C, "Smart Array P400", &SA5_access},
- { 0x3235103C, "Smart Array P400i", &SA5_access},
- { 0x3211103C, "Smart Array E200i", &SA5_access},
- { 0x3212103C, "Smart Array E200", &SA5_access},
- { 0x3213103C, "Smart Array E200i", &SA5_access},
- { 0x3214103C, "Smart Array E200i", &SA5_access},
- { 0x3215103C, "Smart Array E200i", &SA5_access},
+ {0x40700E11, "Smart Array 5300", &SA5_access},
+ {0x40800E11, "Smart Array 5i", &SA5B_access},
+ {0x40820E11, "Smart Array 532", &SA5B_access},
+ {0x40830E11, "Smart Array 5312", &SA5B_access},
+ {0x409A0E11, "Smart Array 641", &SA5_access},
+ {0x409B0E11, "Smart Array 642", &SA5_access},
+ {0x409C0E11, "Smart Array 6400", &SA5_access},
+ {0x409D0E11, "Smart Array 6400 EM", &SA5_access},
+ {0x40910E11, "Smart Array 6i", &SA5_access},
+ {0x3225103C, "Smart Array P600", &SA5_access},
+ {0x3235103C, "Smart Array P400i", &SA5_access},
+ {0x3211103C, "Smart Array E200i", &SA5_access},
+ {0x3212103C, "Smart Array E200", &SA5_access},
+ {0x3213103C, "Smart Array E200i", &SA5_access},
+ {0x3214103C, "Smart Array E200i", &SA5_access},
+ {0x3215103C, "Smart Array E200i", &SA5_access},
+ {0x3237103C, "Smart Array E500", &SA5_access},
+/* controllers below this line are also supported by the hpsa driver. */
+#define HPSA_BOUNDARY 0x3223103C
+ {0x3223103C, "Smart Array P800", &SA5_access},
+ {0x3234103C, "Smart Array P400", &SA5_access},
+ {0x323D103C, "Smart Array P700m", &SA5_access},
+ {0x3241103C, "Smart Array P212", &SA5_access},
+ {0x3243103C, "Smart Array P410", &SA5_access},
+ {0x3245103C, "Smart Array P410i", &SA5_access},
+ {0x3247103C, "Smart Array P411", &SA5_access},
+ {0x3249103C, "Smart Array P812", &SA5_access},
+ {0x324A103C, "Smart Array P712m", &SA5_access},
+ {0x324B103C, "Smart Array P711m", &SA5_access},
};
-/* How long to wait (in millesconds) for board to go into simple mode */
-#define MAX_CONFIG_WAIT 30000
+/* How long to wait (in milliseconds) for board to go into simple mode */
+#define MAX_CONFIG_WAIT 30000
#define MAX_IOCTL_CONFIG_WAIT 1000
/*define how many times we will try a command because of bus resets */
#define MAX_CMD_RETRIES 3
-#define READ_AHEAD 1024
-#define NR_CMDS 384 /* #commands that can be outstanding */
#define MAX_CTLR 32
/* Originally cciss driver only supports 8 major numbers */
#define MAX_CTLR_ORIG 8
-
static ctlr_info_t *hba[MAX_CTLR];
-static void do_cciss_request(request_queue_t *q);
-static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs);
-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 struct task_struct *cciss_scan_thread;
+static DEFINE_MUTEX(scan_mutex);
+static LIST_HEAD(scan_q);
+
+static void do_cciss_request(struct request_queue *q);
+static irqreturn_t do_cciss_intr(int irq, void *dev_id);
+static int cciss_open(struct block_device *bdev, fmode_t mode);
+static int cciss_release(struct gendisk *disk, fmode_t mode);
+static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long arg);
static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
-static int revalidate_allvol(ctlr_info_t *host);
static int cciss_revalidate(struct gendisk *disk);
-static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk);
-static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, int clear_all);
-
-static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
- int withirq, unsigned int *total_size, unsigned int *block_size);
+static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl);
+static int deregister_disk(ctlr_info_t *h, int drv_index,
+ int clear_all, int via_ioctl);
+
+static void cciss_read_capacity(int ctlr, int logvol,
+ sector_t *total_size, unsigned int *block_size);
+static void cciss_read_capacity_16(int ctlr, int logvol,
+ sector_t *total_size, unsigned int *block_size);
static void cciss_geometry_inquiry(int ctlr, int logvol,
- int withirq, unsigned int total_size,
+ sector_t total_size,
unsigned int block_size, InquiryData_struct *inq_buff,
- drive_info_struct *drv);
-static void cciss_getgeometry(int cntl_num);
-static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, __u32);
-static void start_io( ctlr_info_t *h);
-static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
- unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
- unsigned char *scsi3addr, int cmd_type);
-static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
- unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
- int cmd_type);
+ drive_info_struct *drv);
+static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
+ __u32);
+static void start_io(ctlr_info_t *h);
+static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
+ __u8 page_code, unsigned char scsi3addr[],
+ int cmd_type);
+static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c,
+ int attempt_retry);
+static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c);
static void fail_all_cmds(unsigned long ctlr);
+static int add_to_scan_list(struct ctlr_info *h);
+static int scan_thread(void *data);
+static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c);
+static void cciss_hba_release(struct device *dev);
+static void cciss_device_release(struct device *dev);
+static void cciss_free_gendisk(ctlr_info_t *h, int drv_index);
+static void cciss_free_drive_info(ctlr_info_t *h, int drv_index);
#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 void cciss_procinit(int i) {}
-#endif /* CONFIG_PROC_FS */
+static void cciss_procinit(int i)
+{
+}
+#endif /* CONFIG_PROC_FS */
#ifdef CONFIG_COMPAT
-static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg);
+static int cciss_compat_ioctl(struct block_device *, fmode_t,
+ unsigned, unsigned long);
#endif
-static struct block_device_operations cciss_fops = {
- .owner = THIS_MODULE,
- .open = cciss_open,
- .release = cciss_release,
- .ioctl = cciss_ioctl,
- .getgeo = cciss_getgeo,
+static const struct block_device_operations cciss_fops = {
+ .owner = THIS_MODULE,
+ .open = cciss_open,
+ .release = cciss_release,
+ .locked_ioctl = cciss_ioctl,
+ .getgeo = cciss_getgeo,
#ifdef CONFIG_COMPAT
- .compat_ioctl = cciss_compat_ioctl,
+ .compat_ioctl = cciss_compat_ioctl,
#endif
- .revalidate_disk= cciss_revalidate,
+ .revalidate_disk = cciss_revalidate,
};
/*
* Enqueuing and dequeuing functions for cmdlists.
*/
-static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c)
+static inline void addQ(struct hlist_head *list, 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;
- }
+ hlist_add_head(&c->list, list);
}
-static inline CommandList_struct *removeQ(CommandList_struct **Qptr,
- CommandList_struct *c)
+static inline void removeQ(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;
+ /*
+ * After kexec/dump some commands might still
+ * be in flight, which the firmware will try
+ * to complete. Resetting the firmware doesn't work
+ * with old fw revisions, so we have to mark
+ * them off as 'stale' to prevent the driver from
+ * falling over.
+ */
+ if (WARN_ON(hlist_unhashed(&c->list))) {
+ c->cmd_type = CMD_MSG_STALE;
+ return;
+ }
+
+ hlist_del_init(&c->list);
+}
+
+static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list,
+ int nr_cmds)
+{
+ int i;
+
+ if (!cmd_sg_list)
+ return;
+ for (i = 0; i < nr_cmds; i++) {
+ kfree(cmd_sg_list[i]);
+ cmd_sg_list[i] = NULL;
+ }
+ kfree(cmd_sg_list);
+}
+
+static SGDescriptor_struct **cciss_allocate_sg_chain_blocks(
+ ctlr_info_t *h, int chainsize, int nr_cmds)
+{
+ int j;
+ SGDescriptor_struct **cmd_sg_list;
+
+ if (chainsize <= 0)
+ return NULL;
+
+ cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL);
+ if (!cmd_sg_list)
+ return NULL;
+
+ /* Build up chain blocks for each command */
+ for (j = 0; j < nr_cmds; j++) {
+ /* Need a block of chainsized s/g elements. */
+ cmd_sg_list[j] = kmalloc((chainsize *
+ sizeof(*cmd_sg_list[j])), GFP_KERNEL);
+ if (!cmd_sg_list[j]) {
+ dev_err(&h->pdev->dev, "Cannot get memory "
+ "for s/g chains.\n");
+ goto clean;
+ }
+ }
+ return cmd_sg_list;
+clean:
+ cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds);
+ return NULL;
+}
+
+static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c)
+{
+ SGDescriptor_struct *chain_sg;
+ u64bit temp64;
+
+ if (c->Header.SGTotal <= h->max_cmd_sgentries)
+ return;
+
+ chain_sg = &c->SG[h->max_cmd_sgentries - 1];
+ temp64.val32.lower = chain_sg->Addr.lower;
+ temp64.val32.upper = chain_sg->Addr.upper;
+ pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE);
+}
+
+static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c,
+ SGDescriptor_struct *chain_block, int len)
+{
+ SGDescriptor_struct *chain_sg;
+ u64bit temp64;
+
+ chain_sg = &c->SG[h->max_cmd_sgentries - 1];
+ chain_sg->Ext = CCISS_SG_CHAIN;
+ chain_sg->Len = len;
+ temp64.val = pci_map_single(h->pdev, chain_block, len,
+ PCI_DMA_TODEVICE);
+ chain_sg->Addr.lower = temp64.val32.lower;
+ chain_sg->Addr.upper = temp64.val32.upper;
}
#include "cciss_scsi.c" /* For SCSI tape support */
+static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
+ "UNKNOWN"
+};
+#define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1)
+
#ifdef CONFIG_PROC_FS
/*
*/
#define ENG_GIG 1000000000
#define ENG_GIG_FACTOR (ENG_GIG/512)
-#define RAID_UNKNOWN 6
-static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG",
- "UNKNOWN"};
+#define ENGAGE_SCSI "engage scsi"
static struct proc_dir_entry *proc_cciss;
-static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
- int length, int *eof, void *data)
+static void cciss_seq_show_header(struct seq_file *seq)
{
- off_t pos = 0;
- off_t len = 0;
- int size, i, ctlr;
- ctlr_info_t *h = (ctlr_info_t*)data;
- drive_info_struct *drv;
- unsigned long flags;
- sector_t vol_sz, vol_sz_frac;
+ ctlr_info_t *h = seq->private;
+
+ seq_printf(seq, "%s: HP %s Controller\n"
+ "Board ID: 0x%08lx\n"
+ "Firmware Version: %c%c%c%c\n"
+ "IRQ: %d\n"
+ "Logical drives: %d\n"
+ "Current Q depth: %d\n"
+ "Current # commands on controller: %d\n"
+ "Max Q depth since init: %d\n"
+ "Max # commands on controller since init: %d\n"
+ "Max SG entries since init: %d\n",
+ h->devname,
+ h->product_name,
+ (unsigned long)h->board_id,
+ h->firm_ver[0], h->firm_ver[1], h->firm_ver[2],
+ h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT],
+ h->num_luns,
+ h->Qdepth, h->commands_outstanding,
+ h->maxQsinceinit, h->max_outstanding, h->maxSG);
+
+#ifdef CONFIG_CISS_SCSI_TAPE
+ cciss_seq_tape_report(seq, h->ctlr);
+#endif /* CONFIG_CISS_SCSI_TAPE */
+}
- ctlr = h->ctlr;
+static void *cciss_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ ctlr_info_t *h = seq->private;
+ unsigned ctlr = h->ctlr;
+ unsigned long flags;
/* prevent displaying bogus info during configuration
* or deconfiguration of a logical volume
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
if (h->busy_configuring) {
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
- return -EBUSY;
+ return ERR_PTR(-EBUSY);
}
h->busy_configuring = 1;
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
- size = sprintf(buffer, "%s: HP %s Controller\n"
- "Board ID: 0x%08lx\n"
- "Firmware Version: %c%c%c%c\n"
- "IRQ: %d\n"
- "Logical drives: %d\n"
- "Current Q depth: %d\n"
- "Current # commands on controller: %d\n"
- "Max Q depth since init: %d\n"
- "Max # commands on controller since init: %d\n"
- "Max SG entries since init: %d\n\n",
- h->devname,
- h->product_name,
- (unsigned long)h->board_id,
- h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3],
- (unsigned int)h->intr[SIMPLE_MODE_INT],
- h->num_luns,
- h->Qdepth, h->commands_outstanding,
- h->maxQsinceinit, h->max_outstanding, h->maxSG);
+ if (*pos == 0)
+ cciss_seq_show_header(seq);
- pos += size; len += size;
- cciss_proc_tape_report(ctlr, buffer, &pos, &len);
- for(i=0; i<=h->highest_lun; i++) {
+ return pos;
+}
- drv = &h->drv[i];
- if (drv->heads == 0)
- continue;
+static int cciss_seq_show(struct seq_file *seq, void *v)
+{
+ sector_t vol_sz, vol_sz_frac;
+ ctlr_info_t *h = seq->private;
+ unsigned ctlr = h->ctlr;
+ loff_t *pos = v;
+ drive_info_struct *drv = h->drv[*pos];
- vol_sz = drv->nr_blocks;
- vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
- vol_sz_frac *= 100;
- sector_div(vol_sz_frac, ENG_GIG_FACTOR);
+ if (*pos > h->highest_lun)
+ return 0;
+
+ if (drv == NULL) /* it's possible for h->drv[] to have holes. */
+ return 0;
+
+ if (drv->heads == 0)
+ return 0;
+
+ vol_sz = drv->nr_blocks;
+ vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR);
+ vol_sz_frac *= 100;
+ sector_div(vol_sz_frac, ENG_GIG_FACTOR);
+
+ if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN)
+ drv->raid_level = RAID_UNKNOWN;
+ seq_printf(seq, "cciss/c%dd%d:"
+ "\t%4u.%02uGB\tRAID %s\n",
+ ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac,
+ raid_label[drv->raid_level]);
+ return 0;
+}
+
+static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ ctlr_info_t *h = seq->private;
+
+ if (*pos > h->highest_lun)
+ return NULL;
+ *pos += 1;
+
+ return pos;
+}
+
+static void cciss_seq_stop(struct seq_file *seq, void *v)
+{
+ ctlr_info_t *h = seq->private;
+
+ /* Only reset h->busy_configuring if we succeeded in setting
+ * it during cciss_seq_start. */
+ if (v == ERR_PTR(-EBUSY))
+ return;
- if (drv->raid_level > 5)
- drv->raid_level = RAID_UNKNOWN;
- size = sprintf(buffer+len, "cciss/c%dd%d:"
- "\t%4u.%02uGB\tRAID %s\n",
- ctlr, i, (int)vol_sz, (int)vol_sz_frac,
- raid_label[drv->raid_level]);
- pos += size; len += size;
- }
-
- *eof = 1;
- *start = buffer+offset;
- len -= offset;
- if (len>length)
- len = length;
h->busy_configuring = 0;
- return len;
}
-static int
-cciss_proc_write(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
+static const struct seq_operations cciss_seq_ops = {
+ .start = cciss_seq_start,
+ .show = cciss_seq_show,
+ .next = cciss_seq_next,
+ .stop = cciss_seq_stop,
+};
+
+static int cciss_seq_open(struct inode *inode, struct file *file)
+{
+ int ret = seq_open(file, &cciss_seq_ops);
+ struct seq_file *seq = file->private_data;
+
+ if (!ret)
+ seq->private = PDE(inode)->data;
+
+ return ret;
+}
+
+static ssize_t
+cciss_proc_write(struct file *file, const char __user *buf,
+ size_t length, loff_t *ppos)
{
- unsigned char cmd[80];
- int len;
-#ifdef CONFIG_CISS_SCSI_TAPE
- ctlr_info_t *h = (ctlr_info_t *) data;
- int rc;
+ int err;
+ char *buffer;
+
+#ifndef CONFIG_CISS_SCSI_TAPE
+ return -EINVAL;
#endif
- if (count > sizeof(cmd)-1) return -EINVAL;
- if (copy_from_user(cmd, buffer, count)) return -EFAULT;
- cmd[count] = '\0';
- len = strlen(cmd); // above 3 lines ensure safety
- if (len && cmd[len-1] == '\n')
- cmd[--len] = '\0';
-# ifdef CONFIG_CISS_SCSI_TAPE
- if (strcmp("engage scsi", cmd)==0) {
- rc = cciss_engage_scsi(h->ctlr);
- if (rc != 0) return -rc;
- return count;
- }
- /* might be nice to have "disengage" too, but it's not
- safely possible. (only 1 module use count, lock issues.) */
-# endif
- return -EINVAL;
+ if (!buf || length > PAGE_SIZE - 1)
+ return -EINVAL;
+
+ buffer = (char *)__get_free_page(GFP_KERNEL);
+ if (!buffer)
+ return -ENOMEM;
+
+ err = -EFAULT;
+ if (copy_from_user(buffer, buf, length))
+ goto out;
+ buffer[length] = '\0';
+
+#ifdef CONFIG_CISS_SCSI_TAPE
+ if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) {
+ struct seq_file *seq = file->private_data;
+ ctlr_info_t *h = seq->private;
+
+ err = cciss_engage_scsi(h->ctlr);
+ if (err == 0)
+ err = length;
+ } else
+#endif /* CONFIG_CISS_SCSI_TAPE */
+ err = -EINVAL;
+ /* might be nice to have "disengage" too, but it's not
+ safely possible. (only 1 module use count, lock issues.) */
+
+out:
+ free_page((unsigned long)buffer);
+ return err;
+}
+
+static const struct file_operations cciss_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = cciss_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+ .write = cciss_proc_write,
+};
+
+static void __devinit cciss_procinit(int i)
+{
+ struct proc_dir_entry *pde;
+
+ if (proc_cciss == NULL)
+ proc_cciss = proc_mkdir("driver/cciss", NULL);
+ if (!proc_cciss)
+ return;
+ pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP |
+ S_IROTH, proc_cciss,
+ &cciss_proc_fops, hba[i]);
+}
+#endif /* CONFIG_PROC_FS */
+
+#define MAX_PRODUCT_NAME_LEN 19
+
+#define to_hba(n) container_of(n, struct ctlr_info, dev)
+#define to_drv(n) container_of(n, drive_info_struct, dev)
+
+static ssize_t host_store_rescan(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ctlr_info *h = to_hba(dev);
+
+ add_to_scan_list(h);
+ wake_up_process(cciss_scan_thread);
+ wait_for_completion_interruptible(&h->scan_wait);
+
+ return count;
+}
+static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
+
+static ssize_t dev_show_unique_id(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ __u8 sn[16];
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring)
+ ret = -EBUSY;
+ else
+ memcpy(sn, drv->serial_no, sizeof(sn));
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+
+ if (ret)
+ return ret;
+ else
+ return snprintf(buf, 16 * 2 + 2,
+ "%02X%02X%02X%02X%02X%02X%02X%02X"
+ "%02X%02X%02X%02X%02X%02X%02X%02X\n",
+ sn[0], sn[1], sn[2], sn[3],
+ sn[4], sn[5], sn[6], sn[7],
+ sn[8], sn[9], sn[10], sn[11],
+ sn[12], sn[13], sn[14], sn[15]);
+}
+static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL);
+
+static ssize_t dev_show_vendor(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ char vendor[VENDOR_LEN + 1];
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring)
+ ret = -EBUSY;
+ else
+ memcpy(vendor, drv->vendor, VENDOR_LEN + 1);
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+
+ if (ret)
+ return ret;
+ else
+ return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor);
+}
+static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL);
+
+static ssize_t dev_show_model(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ char model[MODEL_LEN + 1];
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring)
+ ret = -EBUSY;
+ else
+ memcpy(model, drv->model, MODEL_LEN + 1);
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+
+ if (ret)
+ return ret;
+ else
+ return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model);
+}
+static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL);
+
+static ssize_t dev_show_rev(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ char rev[REV_LEN + 1];
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring)
+ ret = -EBUSY;
+ else
+ memcpy(rev, drv->rev, REV_LEN + 1);
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+
+ if (ret)
+ return ret;
+ else
+ return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev);
+}
+static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL);
+
+static ssize_t cciss_show_lunid(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ unsigned long flags;
+ unsigned char lunid[8];
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -EBUSY;
+ }
+ if (!drv->heads) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -ENOTTY;
+ }
+ memcpy(lunid, drv->LunID, sizeof(lunid));
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ lunid[0], lunid[1], lunid[2], lunid[3],
+ lunid[4], lunid[5], lunid[6], lunid[7]);
+}
+static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL);
+
+static ssize_t cciss_show_raid_level(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ int raid;
+ unsigned long flags;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -EBUSY;
+ }
+ raid = drv->raid_level;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ if (raid < 0 || raid > RAID_UNKNOWN)
+ raid = RAID_UNKNOWN;
+
+ return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n",
+ raid_label[raid]);
+}
+static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL);
+
+static ssize_t cciss_show_usage_count(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ unsigned long flags;
+ int count;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -EBUSY;
+ }
+ count = drv->usage_count;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return snprintf(buf, 20, "%d\n", count);
+}
+static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL);
+
+static struct attribute *cciss_host_attrs[] = {
+ &dev_attr_rescan.attr,
+ NULL
+};
+
+static struct attribute_group cciss_host_attr_group = {
+ .attrs = cciss_host_attrs,
+};
+
+static const struct attribute_group *cciss_host_attr_groups[] = {
+ &cciss_host_attr_group,
+ NULL
+};
+
+static struct device_type cciss_host_type = {
+ .name = "cciss_host",
+ .groups = cciss_host_attr_groups,
+ .release = cciss_hba_release,
+};
+
+static struct attribute *cciss_dev_attrs[] = {
+ &dev_attr_unique_id.attr,
+ &dev_attr_model.attr,
+ &dev_attr_vendor.attr,
+ &dev_attr_rev.attr,
+ &dev_attr_lunid.attr,
+ &dev_attr_raid_level.attr,
+ &dev_attr_usage_count.attr,
+ NULL
+};
+
+static struct attribute_group cciss_dev_attr_group = {
+ .attrs = cciss_dev_attrs,
+};
+
+static const struct attribute_group *cciss_dev_attr_groups[] = {
+ &cciss_dev_attr_group,
+ NULL
+};
+
+static struct device_type cciss_dev_type = {
+ .name = "cciss_device",
+ .groups = cciss_dev_attr_groups,
+ .release = cciss_device_release,
+};
+
+static struct bus_type cciss_bus_type = {
+ .name = "cciss",
+};
+
+/*
+ * cciss_hba_release is called when the reference count
+ * of h->dev goes to zero.
+ */
+static void cciss_hba_release(struct device *dev)
+{
+ /*
+ * nothing to do, but need this to avoid a warning
+ * about not having a release handler from lib/kref.c.
+ */
+}
+
+/*
+ * Initialize sysfs entry for each controller. This sets up and registers
+ * the 'cciss#' directory for each individual controller under
+ * /sys/bus/pci/devices/<dev>/.
+ */
+static int cciss_create_hba_sysfs_entry(struct ctlr_info *h)
+{
+ device_initialize(&h->dev);
+ h->dev.type = &cciss_host_type;
+ h->dev.bus = &cciss_bus_type;
+ dev_set_name(&h->dev, "%s", h->devname);
+ h->dev.parent = &h->pdev->dev;
+
+ return device_add(&h->dev);
+}
+
+/*
+ * Remove sysfs entries for an hba.
+ */
+static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h)
+{
+ device_del(&h->dev);
+ put_device(&h->dev); /* final put. */
+}
+
+/* cciss_device_release is called when the reference count
+ * of h->drv[x]dev goes to zero.
+ */
+static void cciss_device_release(struct device *dev)
+{
+ drive_info_struct *drv = to_drv(dev);
+ kfree(drv);
+}
+
+/*
+ * Initialize sysfs for each logical drive. This sets up and registers
+ * the 'c#d#' directory for each individual logical drive under
+ * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from
+ * /sys/block/cciss!c#d# to this entry.
+ */
+static long cciss_create_ld_sysfs_entry(struct ctlr_info *h,
+ int drv_index)
+{
+ struct device *dev;
+
+ if (h->drv[drv_index]->device_initialized)
+ return 0;
+
+ dev = &h->drv[drv_index]->dev;
+ device_initialize(dev);
+ dev->type = &cciss_dev_type;
+ dev->bus = &cciss_bus_type;
+ dev_set_name(dev, "c%dd%d", h->ctlr, drv_index);
+ dev->parent = &h->dev;
+ h->drv[drv_index]->device_initialized = 1;
+ return device_add(dev);
}
/*
- * Get us a file in /proc/cciss that says something about each controller.
- * Create /proc/cciss if it doesn't exist yet.
+ * Remove sysfs entries for a logical drive.
*/
-static void __devinit cciss_procinit(int i)
+static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index,
+ int ctlr_exiting)
{
- struct proc_dir_entry *pde;
+ struct device *dev = &h->drv[drv_index]->dev;
- if (proc_cciss == NULL) {
- proc_cciss = proc_mkdir("cciss", proc_root_driver);
- if (!proc_cciss)
- return;
- }
+ /* special case for c*d0, we only destroy it on controller exit */
+ if (drv_index == 0 && !ctlr_exiting)
+ return;
- pde = create_proc_read_entry(hba[i]->devname,
- S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH,
- proc_cciss, cciss_proc_get_info, hba[i]);
- pde->write_proc = cciss_proc_write;
+ device_del(dev);
+ put_device(dev); /* the "final" put. */
+ h->drv[drv_index] = NULL;
}
-#endif /* CONFIG_PROC_FS */
-/*
- * For operations that cannot sleep, a command block is allocated at init,
+/*
+ * For operations that cannot sleep, a command block is allocated at init,
* and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
- * which ones are free or in use. For operations that can wait for kmalloc
- * to possible sleep, this routine can be called with get_from_pool set to 0.
- * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
- */
-static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool)
+ * which ones are free or in use. For operations that can wait for kmalloc
+ * to possible sleep, this routine can be called with get_from_pool set to 0.
+ * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was.
+ */
+static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool)
{
CommandList_struct *c;
- int i;
+ int i;
u64bit temp64;
dma_addr_t cmd_dma_handle, err_dma_handle;
- if (!get_from_pool)
- {
- c = (CommandList_struct *) pci_alloc_consistent(
- h->pdev, sizeof(CommandList_struct), &cmd_dma_handle);
- if(c==NULL)
- return NULL;
+ if (!get_from_pool) {
+ c = (CommandList_struct *) pci_alloc_consistent(h->pdev,
+ sizeof(CommandList_struct), &cmd_dma_handle);
+ if (c == NULL)
+ return NULL;
memset(c, 0, sizeof(CommandList_struct));
c->cmdindex = -1;
- c->err_info = (ErrorInfo_struct *)pci_alloc_consistent(
- h->pdev, sizeof(ErrorInfo_struct),
- &err_dma_handle);
-
- if (c->err_info == NULL)
- {
- pci_free_consistent(h->pdev,
+ c->err_info = (ErrorInfo_struct *)
+ pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct),
+ &err_dma_handle);
+
+ if (c->err_info == NULL) {
+ pci_free_consistent(h->pdev,
sizeof(CommandList_struct), c, cmd_dma_handle);
return NULL;
}
memset(c->err_info, 0, sizeof(ErrorInfo_struct));
- } else /* get it out of the controllers pool */
- {
- do {
- i = find_first_zero_bit(h->cmd_pool_bits, 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);
+ } else { /* get it out of the controllers pool */
+
+ do {
+ i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds);
+ if (i == h->nr_cmds)
+ return NULL;
+ } while (test_and_set_bit
+ (i & (BITS_PER_LONG - 1),
+ h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss: using command buffer %d\n", i);
#endif
- c = h->cmd_pool + i;
+ c = h->cmd_pool + i;
memset(c, 0, sizeof(CommandList_struct));
- cmd_dma_handle = h->cmd_pool_dhandle
- + i*sizeof(CommandList_struct);
+ cmd_dma_handle = h->cmd_pool_dhandle
+ + i * sizeof(CommandList_struct);
c->err_info = h->errinfo_pool + i;
memset(c->err_info, 0, sizeof(ErrorInfo_struct));
- err_dma_handle = h->errinfo_pool_dhandle
- + i*sizeof(ErrorInfo_struct);
- h->nr_allocs++;
+ err_dma_handle = h->errinfo_pool_dhandle
+ + i * sizeof(ErrorInfo_struct);
+ h->nr_allocs++;
c->cmdindex = i;
- }
+ }
+ INIT_HLIST_NODE(&c->list);
c->busaddr = (__u32) cmd_dma_handle;
- temp64.val = (__u64) err_dma_handle;
+ temp64.val = (__u64) err_dma_handle;
c->ErrDesc.Addr.lower = temp64.val32.lower;
c->ErrDesc.Addr.upper = temp64.val32.upper;
c->ErrDesc.Len = sizeof(ErrorInfo_struct);
-
- c->ctlr = h->ctlr;
- return c;
-
+ c->ctlr = h->ctlr;
+ return c;
}
-/*
- * Frees a command block that was previously allocated with cmd_alloc().
+/*
+ * Frees a command block that was previously allocated with cmd_alloc().
*/
static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool)
{
int i;
u64bit temp64;
- if( !got_from_pool)
- {
+ if (!got_from_pool) {
temp64.val32.lower = c->ErrDesc.Addr.lower;
temp64.val32.upper = c->ErrDesc.Addr.upper;
- pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
- c->err_info, (dma_addr_t) temp64.val);
- pci_free_consistent(h->pdev, sizeof(CommandList_struct),
- c, (dma_addr_t) c->busaddr);
- } else
- {
+ pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct),
+ c->err_info, (dma_addr_t) temp64.val);
+ pci_free_consistent(h->pdev, sizeof(CommandList_struct),
+ c, (dma_addr_t) c->busaddr);
+ } else {
i = c - h->cmd_pool;
- clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG));
- h->nr_frees++;
- }
+ clear_bit(i & (BITS_PER_LONG - 1),
+ h->cmd_pool_bits + (i / BITS_PER_LONG));
+ h->nr_frees++;
+ }
}
static inline ctlr_info_t *get_host(struct gendisk *disk)
{
- return disk->queue->queuedata;
+ return disk->queue->queuedata;
}
static inline drive_info_struct *get_drv(struct gendisk *disk)
/*
* Open. Make sure the device is really there.
*/
-static int cciss_open(struct inode *inode, struct file *filep)
+static int cciss_open(struct block_device *bdev, fmode_t mode)
{
- ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
- drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
+ ctlr_info_t *host = get_host(bdev->bd_disk);
+ drive_info_struct *drv = get_drv(bdev->bd_disk);
#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
-#endif /* CCISS_DEBUG */
+ printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name);
+#endif /* CCISS_DEBUG */
- if (host->busy_initializing || drv->busy_configuring)
+ if (drv->busy_configuring)
return -EBUSY;
/*
* Root is allowed to open raw volume zero even if it's not configured
* but I'm already using way to many device nodes to claim another one
* for "raw controller".
*/
- if (drv->nr_blocks == 0) {
- if (iminor(inode) != 0) { /* not node 0? */
+ if (drv->heads == 0) {
+ if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */
/* if not node 0 make sure it is a partition = 0 */
- if (iminor(inode) & 0x0f) {
- return -ENXIO;
+ if (MINOR(bdev->bd_dev) & 0x0f) {
+ return -ENXIO;
/* if it is, make sure we have a LUN ID */
- } else if (drv->LunID == 0) {
+ } else if (memcmp(drv->LunID, CTLR_LUNID,
+ sizeof(drv->LunID))) {
return -ENXIO;
}
}
host->usage_count++;
return 0;
}
+
/*
* Close. Sync first.
*/
-static int cciss_release(struct inode *inode, struct file *filep)
+static int cciss_release(struct gendisk *disk, fmode_t mode)
{
- ctlr_info_t *host = get_host(inode->i_bdev->bd_disk);
- drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk);
+ ctlr_info_t *host = get_host(disk);
+ drive_info_struct *drv = get_drv(disk);
#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name);
-#endif /* CCISS_DEBUG */
+ printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name);
+#endif /* CCISS_DEBUG */
drv->usage_count--;
host->usage_count--;
#ifdef CONFIG_COMPAT
-static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg)
+static int do_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned cmd, unsigned long arg)
{
int ret;
lock_kernel();
- ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg);
+ ret = cciss_ioctl(bdev, mode, cmd, arg);
unlock_kernel();
return ret;
}
-static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg);
-static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg);
+static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
+ unsigned cmd, unsigned long arg);
+static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode,
+ unsigned cmd, unsigned long arg);
-static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg)
+static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned cmd, unsigned long arg)
{
switch (cmd) {
case CCISS_GETPCIINFO:
case CCISS_REGNEWD:
case CCISS_RESCANDISK:
case CCISS_GETLUNINFO:
- return do_ioctl(f, cmd, arg);
+ return do_ioctl(bdev, mode, cmd, arg);
case CCISS_PASSTHRU32:
- return cciss_ioctl32_passthru(f, cmd, arg);
+ return cciss_ioctl32_passthru(bdev, mode, cmd, arg);
case CCISS_BIG_PASSTHRU32:
- return cciss_ioctl32_big_passthru(f, cmd, arg);
+ return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg);
default:
return -ENOIOCTLCMD;
}
}
-static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg)
+static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode,
+ unsigned cmd, unsigned long arg)
{
IOCTL32_Command_struct __user *arg32 =
- (IOCTL32_Command_struct __user *) arg;
+ (IOCTL32_Command_struct __user *) arg;
IOCTL_Command_struct arg64;
IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
int err;
u32 cp;
err = 0;
- err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
- err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
- err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
+ err |=
+ copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
+ sizeof(arg64.LUN_info));
+ err |=
+ copy_from_user(&arg64.Request, &arg32->Request,
+ sizeof(arg64.Request));
+ err |=
+ copy_from_user(&arg64.error_info, &arg32->error_info,
+ sizeof(arg64.error_info));
err |= get_user(arg64.buf_size, &arg32->buf_size);
err |= get_user(cp, &arg32->buf);
arg64.buf = compat_ptr(cp);
if (err)
return -EFAULT;
- err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p);
+ err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p);
if (err)
return err;
- err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
+ err |=
+ copy_in_user(&arg32->error_info, &p->error_info,
+ sizeof(arg32->error_info));
if (err)
return -EFAULT;
return err;
}
-static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg)
+static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode,
+ unsigned cmd, unsigned long arg)
{
BIG_IOCTL32_Command_struct __user *arg32 =
- (BIG_IOCTL32_Command_struct __user *) arg;
+ (BIG_IOCTL32_Command_struct __user *) arg;
BIG_IOCTL_Command_struct arg64;
- BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
+ BIG_IOCTL_Command_struct __user *p =
+ compat_alloc_user_space(sizeof(arg64));
int err;
u32 cp;
err = 0;
- err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info));
- err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request));
- err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info));
+ err |=
+ copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
+ sizeof(arg64.LUN_info));
+ err |=
+ copy_from_user(&arg64.Request, &arg32->Request,
+ sizeof(arg64.Request));
+ err |=
+ copy_from_user(&arg64.error_info, &arg32->error_info,
+ sizeof(arg64.error_info));
err |= get_user(arg64.buf_size, &arg32->buf_size);
err |= get_user(arg64.malloc_size, &arg32->malloc_size);
err |= get_user(cp, &arg32->buf);
err |= copy_to_user(p, &arg64, sizeof(arg64));
if (err)
- return -EFAULT;
+ return -EFAULT;
- err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p);
+ err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p);
if (err)
return err;
- err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info));
+ err |=
+ copy_in_user(&arg32->error_info, &p->error_info,
+ sizeof(arg32->error_info));
if (err)
return -EFAULT;
return err;
return 0;
}
+static void check_ioctl_unit_attention(ctlr_info_t *host, CommandList_struct *c)
+{
+ if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
+ c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
+ (void)check_for_unit_attention(host, c);
+}
/*
- * ioctl
+ * ioctl
*/
-static int cciss_ioctl(struct inode *inode, struct file *filep,
- unsigned int cmd, unsigned long arg)
+static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long arg)
{
- struct block_device *bdev = inode->i_bdev;
struct gendisk *disk = bdev->bd_disk;
ctlr_info_t *host = get_host(disk);
drive_info_struct *drv = get_drv(disk);
#ifdef CCISS_DEBUG
printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg);
-#endif /* CCISS_DEBUG */
-
- switch(cmd) {
+#endif /* CCISS_DEBUG */
+
+ switch (cmd) {
case CCISS_GETPCIINFO:
- {
- cciss_pci_info_struct pciinfo;
-
- if (!arg) return -EINVAL;
- pciinfo.domain = pci_domain_nr(host->pdev->bus);
- pciinfo.bus = host->pdev->bus->number;
- pciinfo.dev_fn = host->pdev->devfn;
- pciinfo.board_id = host->board_id;
- if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct )))
- return -EFAULT;
- return(0);
- }
+ {
+ cciss_pci_info_struct pciinfo;
+
+ if (!arg)
+ return -EINVAL;
+ pciinfo.domain = pci_domain_nr(host->pdev->bus);
+ pciinfo.bus = host->pdev->bus->number;
+ pciinfo.dev_fn = host->pdev->devfn;
+ pciinfo.board_id = host->board_id;
+ if (copy_to_user
+ (argp, &pciinfo, sizeof(cciss_pci_info_struct)))
+ return -EFAULT;
+ return 0;
+ }
case CCISS_GETINTINFO:
- {
- cciss_coalint_struct intinfo;
- if (!arg) return -EINVAL;
- intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay);
- intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount);
- if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct )))
- return -EFAULT;
- return(0);
- }
+ {
+ cciss_coalint_struct intinfo;
+ if (!arg)
+ return -EINVAL;
+ intinfo.delay =
+ readl(&host->cfgtable->HostWrite.CoalIntDelay);
+ intinfo.count =
+ readl(&host->cfgtable->HostWrite.CoalIntCount);
+ if (copy_to_user
+ (argp, &intinfo, sizeof(cciss_coalint_struct)))
+ return -EFAULT;
+ return 0;
+ }
case CCISS_SETINTINFO:
- {
- cciss_coalint_struct intinfo;
- unsigned long flags;
- int i;
-
- if (!arg) return -EINVAL;
- if (!capable(CAP_SYS_ADMIN)) return -EPERM;
- if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct)))
- return -EFAULT;
- if ( (intinfo.delay == 0 ) && (intinfo.count == 0))
-
{
-// printk("cciss_ioctl: delay and count cannot be 0\n");
- return( -EINVAL);
+ cciss_coalint_struct intinfo;
+ unsigned long flags;
+ int i;
+
+ if (!arg)
+ return -EINVAL;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ if (copy_from_user
+ (&intinfo, argp, sizeof(cciss_coalint_struct)))
+ return -EFAULT;
+ if ((intinfo.delay == 0) && (intinfo.count == 0))
+ {
+// printk("cciss_ioctl: delay and count cannot be 0\n");
+ return -EINVAL;
+ }
+ spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+ /* Update the field, and then ring the doorbell */
+ writel(intinfo.delay,
+ &(host->cfgtable->HostWrite.CoalIntDelay));
+ writel(intinfo.count,
+ &(host->cfgtable->HostWrite.CoalIntCount));
+ writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
+
+ for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
+ if (!(readl(host->vaddr + SA5_DOORBELL)
+ & CFGTBL_ChangeReq))
+ break;
+ /* delay and try again */
+ udelay(1000);
+ }
+ spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+ if (i >= MAX_IOCTL_CONFIG_WAIT)
+ return -EAGAIN;
+ return 0;
}
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- /* Update the field, and then ring the doorbell */
- writel( intinfo.delay,
- &(host->cfgtable->HostWrite.CoalIntDelay));
- writel( intinfo.count,
- &(host->cfgtable->HostWrite.CoalIntCount));
- writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
-
- for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
- if (!(readl(host->vaddr + SA5_DOORBELL)
- & CFGTBL_ChangeReq))
- break;
- /* delay and try again */
- udelay(1000);
- }
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
- if (i >= MAX_IOCTL_CONFIG_WAIT)
- return -EAGAIN;
- return(0);
- }
case CCISS_GETNODENAME:
- {
- NodeName_type NodeName;
- int i;
-
- if (!arg) return -EINVAL;
- for(i=0;i<16;i++)
- NodeName[i] = readb(&host->cfgtable->ServerName[i]);
- if (copy_to_user(argp, NodeName, sizeof( NodeName_type)))
- return -EFAULT;
- return(0);
- }
- case CCISS_SETNODENAME:
- {
- NodeName_type NodeName;
- unsigned long flags;
- int i;
-
- if (!arg) return -EINVAL;
- if (!capable(CAP_SYS_ADMIN)) return -EPERM;
-
- if (copy_from_user(NodeName, argp, sizeof( NodeName_type)))
- return -EFAULT;
-
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
-
- /* Update the field, and then ring the doorbell */
- for(i=0;i<16;i++)
- writeb( NodeName[i], &host->cfgtable->ServerName[i]);
-
- writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
-
- for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) {
- if (!(readl(host->vaddr + SA5_DOORBELL)
- & CFGTBL_ChangeReq))
- break;
- /* delay and try again */
- udelay(1000);
- }
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
- if (i >= MAX_IOCTL_CONFIG_WAIT)
- return -EAGAIN;
- return(0);
- }
+ {
+ NodeName_type NodeName;
+ int i;
- case CCISS_GETHEARTBEAT:
- {
- Heartbeat_type heartbeat;
-
- if (!arg) return -EINVAL;
- heartbeat = readl(&host->cfgtable->HeartBeat);
- if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type)))
- return -EFAULT;
- return(0);
- }
- case CCISS_GETBUSTYPES:
- {
- BusTypes_type BusTypes;
-
- if (!arg) return -EINVAL;
- BusTypes = readl(&host->cfgtable->BusTypes);
- if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) ))
- return -EFAULT;
- return(0);
- }
- case CCISS_GETFIRMVER:
- {
- FirmwareVer_type firmware;
+ if (!arg)
+ return -EINVAL;
+ for (i = 0; i < 16; i++)
+ NodeName[i] =
+ readb(&host->cfgtable->ServerName[i]);
+ if (copy_to_user(argp, NodeName, sizeof(NodeName_type)))
+ return -EFAULT;
+ return 0;
+ }
+ case CCISS_SETNODENAME:
+ {
+ NodeName_type NodeName;
+ unsigned long flags;
+ int i;
- if (!arg) return -EINVAL;
- memcpy(firmware, host->firm_ver, 4);
+ if (!arg)
+ return -EINVAL;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
- if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type)))
- return -EFAULT;
- return(0);
- }
- case CCISS_GETDRIVVER:
- {
- DriverVer_type DriverVer = DRIVER_VERSION;
+ if (copy_from_user
+ (NodeName, argp, sizeof(NodeName_type)))
+ return -EFAULT;
- if (!arg) return -EINVAL;
+ spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) ))
- return -EFAULT;
- return(0);
- }
+ /* Update the field, and then ring the doorbell */
+ for (i = 0; i < 16; i++)
+ writeb(NodeName[i],
+ &host->cfgtable->ServerName[i]);
- case CCISS_REVALIDVOLS:
- if (bdev != bdev->bd_contains || drv != host->drv)
- return -ENXIO;
- return revalidate_allvol(host);
-
- case CCISS_GETLUNINFO: {
- LogvolInfo_struct luninfo;
-
- luninfo.LunID = drv->LunID;
- luninfo.num_opens = drv->usage_count;
- luninfo.num_parts = 0;
- if (copy_to_user(argp, &luninfo,
- sizeof(LogvolInfo_struct)))
- return -EFAULT;
- return(0);
- }
- case CCISS_DEREGDISK:
- return rebuild_lun_table(host, disk);
+ writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL);
- case CCISS_REGNEWD:
- return rebuild_lun_table(host, NULL);
+ for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) {
+ if (!(readl(host->vaddr + SA5_DOORBELL)
+ & CFGTBL_ChangeReq))
+ break;
+ /* delay and try again */
+ udelay(1000);
+ }
+ spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+ if (i >= MAX_IOCTL_CONFIG_WAIT)
+ return -EAGAIN;
+ return 0;
+ }
- case CCISS_PASSTHRU:
- {
- IOCTL_Command_struct iocommand;
- CommandList_struct *c;
- char *buff = NULL;
- u64bit temp64;
- unsigned long flags;
- DECLARE_COMPLETION(wait);
-
- if (!arg) return -EINVAL;
-
- if (!capable(CAP_SYS_RAWIO)) return -EPERM;
-
- if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) ))
- return -EFAULT;
- if((iocommand.buf_size < 1) &&
- (iocommand.Request.Type.Direction != XFER_NONE))
- {
- return -EINVAL;
- }
-#if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
- /* Check kmalloc limits */
- if(iocommand.buf_size > 128000)
- return -EINVAL;
-#endif
- if(iocommand.buf_size > 0)
+ case CCISS_GETHEARTBEAT:
{
- buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
- if( buff == NULL)
+ Heartbeat_type heartbeat;
+
+ if (!arg)
+ return -EINVAL;
+ heartbeat = readl(&host->cfgtable->HeartBeat);
+ if (copy_to_user
+ (argp, &heartbeat, sizeof(Heartbeat_type)))
return -EFAULT;
+ return 0;
}
- if (iocommand.Request.Type.Direction == XFER_WRITE)
+ case CCISS_GETBUSTYPES:
{
- /* Copy the data into the buffer we created */
- if (copy_from_user(buff, iocommand.buf, iocommand.buf_size))
- {
- kfree(buff);
+ BusTypes_type BusTypes;
+
+ if (!arg)
+ return -EINVAL;
+ BusTypes = readl(&host->cfgtable->BusTypes);
+ if (copy_to_user
+ (argp, &BusTypes, sizeof(BusTypes_type)))
return -EFAULT;
- }
- } else {
- memset(buff, 0, iocommand.buf_size);
- }
- if ((c = cmd_alloc(host , 0)) == NULL)
- {
- kfree(buff);
- return -ENOMEM;
+ return 0;
}
- // 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
+ case CCISS_GETFIRMVER:
{
- c->Header.SGList = 0;
- c->Header.SGTotal= 0;
+ FirmwareVer_type firmware;
+
+ if (!arg)
+ return -EINVAL;
+ memcpy(firmware, host->firm_ver, 4);
+
+ if (copy_to_user
+ (argp, firmware, sizeof(FirmwareVer_type)))
+ return -EFAULT;
+ return 0;
}
- 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 )
+ case CCISS_GETDRIVVER:
{
- temp64.val = pci_map_single( host->pdev, buff,
- iocommand.buf_size,
- PCI_DMA_BIDIRECTIONAL);
- c->SG[0].Addr.lower = temp64.val32.lower;
- c->SG[0].Addr.upper = temp64.val32.upper;
- c->SG[0].Len = iocommand.buf_size;
- c->SG[0].Ext = 0; // we are not chaining
- }
- c->waiting = &wait;
+ DriverVer_type DriverVer = DRIVER_VERSION;
- /* Put the request on the tail of the request queue */
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- addQ(&host->reqQ, c);
- host->Qdepth++;
- start_io(host);
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+ if (!arg)
+ return -EINVAL;
+
+ if (copy_to_user
+ (argp, &DriverVer, sizeof(DriverVer_type)))
+ return -EFAULT;
+ return 0;
+ }
- wait_for_completion(&wait);
+ case CCISS_DEREGDISK:
+ case CCISS_REGNEWD:
+ case CCISS_REVALIDVOLS:
+ return rebuild_lun_table(host, 0, 1);
- /* unlock the buffers from DMA */
- temp64.val32.lower = c->SG[0].Addr.lower;
- temp64.val32.upper = c->SG[0].Addr.upper;
- pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
- iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
+ case CCISS_GETLUNINFO:{
+ LogvolInfo_struct luninfo;
- /* Copy the error information out */
- iocommand.error_info = *(c->err_info);
- if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) )
+ memcpy(&luninfo.LunID, drv->LunID,
+ sizeof(luninfo.LunID));
+ luninfo.num_opens = drv->usage_count;
+ luninfo.num_parts = 0;
+ if (copy_to_user(argp, &luninfo,
+ sizeof(LogvolInfo_struct)))
+ return -EFAULT;
+ return 0;
+ }
+ case CCISS_PASSTHRU:
{
- kfree(buff);
- cmd_free(host, c, 0);
- return( -EFAULT);
- }
+ IOCTL_Command_struct iocommand;
+ CommandList_struct *c;
+ char *buff = NULL;
+ u64bit temp64;
+ unsigned long flags;
+ DECLARE_COMPLETION_ONSTACK(wait);
+
+ if (!arg)
+ return -EINVAL;
- 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))
+ if (!capable(CAP_SYS_RAWIO))
+ return -EPERM;
+
+ if (copy_from_user
+ (&iocommand, argp, sizeof(IOCTL_Command_struct)))
+ return -EFAULT;
+ if ((iocommand.buf_size < 1) &&
+ (iocommand.Request.Type.Direction != XFER_NONE)) {
+ return -EINVAL;
+ }
+#if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */
+ /* Check kmalloc limits */
+ if (iocommand.buf_size > 128000)
+ return -EINVAL;
+#endif
+ if (iocommand.buf_size > 0) {
+ buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
+ if (buff == NULL)
+ return -EFAULT;
+ }
+ if (iocommand.Request.Type.Direction == XFER_WRITE) {
+ /* Copy the data into the buffer we created */
+ if (copy_from_user
+ (buff, iocommand.buf, iocommand.buf_size)) {
+ kfree(buff);
+ return -EFAULT;
+ }
+ } else {
+ memset(buff, 0, iocommand.buf_size);
+ }
+ if ((c = cmd_alloc(host, 0)) == NULL) {
+ kfree(buff);
+ return -ENOMEM;
+ }
+ /* Fill in the command type */
+ c->cmd_type = CMD_IOCTL_PEND;
+ /* Fill in Command Header */
+ c->Header.ReplyQueue = 0; /* unused in simple mode */
+ if (iocommand.buf_size > 0) /* buffer to fill */
{
- kfree(buff);
+ 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;
+ /* use the kernel address the cmd block for tag */
+ c->Header.Tag.lower = c->busaddr;
+
+ /* Fill in Request block */
+ c->Request = iocommand.Request;
+
+ /* Fill in the scatter gather information */
+ if (iocommand.buf_size > 0) {
+ temp64.val = pci_map_single(host->pdev, buff,
+ iocommand.buf_size,
+ PCI_DMA_BIDIRECTIONAL);
+ c->SG[0].Addr.lower = temp64.val32.lower;
+ c->SG[0].Addr.upper = temp64.val32.upper;
+ c->SG[0].Len = iocommand.buf_size;
+ c->SG[0].Ext = 0; /* we are not chaining */
+ }
+ c->waiting = &wait;
+
+ /* Put the request on the tail of the request queue */
+ spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+ addQ(&host->reqQ, c);
+ host->Qdepth++;
+ start_io(host);
+ spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+
+ wait_for_completion(&wait);
+
+ /* unlock the buffers from DMA */
+ temp64.val32.lower = c->SG[0].Addr.lower;
+ temp64.val32.upper = c->SG[0].Addr.upper;
+ pci_unmap_single(host->pdev, (dma_addr_t) temp64.val,
+ iocommand.buf_size,
+ PCI_DMA_BIDIRECTIONAL);
+
+ check_ioctl_unit_attention(host, c);
+
+ /* Copy the error information out */
+ iocommand.error_info = *(c->err_info);
+ if (copy_to_user
+ (argp, &iocommand, sizeof(IOCTL_Command_struct))) {
+ kfree(buff);
cmd_free(host, c, 0);
return -EFAULT;
}
- }
- kfree(buff);
- cmd_free(host, c, 0);
- return(0);
- }
- case CCISS_BIG_PASSTHRU: {
- BIG_IOCTL_Command_struct *ioc;
- CommandList_struct *c;
- unsigned char **buff = NULL;
- int *buff_size = NULL;
- u64bit temp64;
- unsigned long flags;
- BYTE sg_used = 0;
- int status = 0;
- int i;
- DECLARE_COMPLETION(wait);
- __u32 left;
- __u32 sz;
- BYTE __user *data_ptr;
-
- if (!arg)
- return -EINVAL;
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
- ioc = (BIG_IOCTL_Command_struct *)
- kmalloc(sizeof(*ioc), GFP_KERNEL);
- if (!ioc) {
- status = -ENOMEM;
- goto cleanup1;
- }
- if (copy_from_user(ioc, argp, sizeof(*ioc))) {
- status = -EFAULT;
- goto cleanup1;
+
+ if (iocommand.Request.Type.Direction == XFER_READ) {
+ /* Copy the data out of the buffer we created */
+ if (copy_to_user
+ (iocommand.buf, buff, iocommand.buf_size)) {
+ kfree(buff);
+ cmd_free(host, c, 0);
+ return -EFAULT;
+ }
+ }
+ kfree(buff);
+ cmd_free(host, c, 0);
+ return 0;
}
- if ((ioc->buf_size < 1) &&
- (ioc->Request.Type.Direction != XFER_NONE)) {
+ case CCISS_BIG_PASSTHRU:{
+ BIG_IOCTL_Command_struct *ioc;
+ CommandList_struct *c;
+ unsigned char **buff = NULL;
+ int *buff_size = NULL;
+ u64bit temp64;
+ unsigned long flags;
+ BYTE sg_used = 0;
+ int status = 0;
+ int i;
+ DECLARE_COMPLETION_ONSTACK(wait);
+ __u32 left;
+ __u32 sz;
+ BYTE __user *data_ptr;
+
+ if (!arg)
+ return -EINVAL;
+ if (!capable(CAP_SYS_RAWIO))
+ return -EPERM;
+ ioc = (BIG_IOCTL_Command_struct *)
+ kmalloc(sizeof(*ioc), GFP_KERNEL);
+ if (!ioc) {
+ status = -ENOMEM;
+ goto cleanup1;
+ }
+ if (copy_from_user(ioc, argp, sizeof(*ioc))) {
+ status = -EFAULT;
+ goto cleanup1;
+ }
+ if ((ioc->buf_size < 1) &&
+ (ioc->Request.Type.Direction != XFER_NONE)) {
status = -EINVAL;
goto cleanup1;
- }
- /* Check kmalloc limits using all SGs */
- if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
- status = -EINVAL;
- goto cleanup1;
- }
- if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
- status = -EINVAL;
- goto cleanup1;
- }
- buff = (unsigned char **) kmalloc(MAXSGENTRIES *
- sizeof(char *), GFP_KERNEL);
- if (!buff) {
- status = -ENOMEM;
- goto cleanup1;
- }
- memset(buff, 0, MAXSGENTRIES);
- buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int),
- GFP_KERNEL);
- if (!buff_size) {
- status = -ENOMEM;
- goto cleanup1;
- }
- left = ioc->buf_size;
- data_ptr = ioc->buf;
- while (left) {
- sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
- buff_size[sg_used] = sz;
- buff[sg_used] = kmalloc(sz, GFP_KERNEL);
- if (buff[sg_used] == NULL) {
+ }
+ /* Check kmalloc limits using all SGs */
+ if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
+ status = -EINVAL;
+ goto cleanup1;
+ }
+ if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) {
+ status = -EINVAL;
+ goto cleanup1;
+ }
+ buff =
+ kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL);
+ if (!buff) {
+ status = -ENOMEM;
+ goto cleanup1;
+ }
+ buff_size = kmalloc(MAXSGENTRIES * sizeof(int),
+ GFP_KERNEL);
+ if (!buff_size) {
status = -ENOMEM;
goto cleanup1;
}
- if (ioc->Request.Type.Direction == XFER_WRITE) {
- if (copy_from_user(buff[sg_used], data_ptr, sz)) {
+ left = ioc->buf_size;
+ data_ptr = ioc->buf;
+ while (left) {
+ sz = (left >
+ ioc->malloc_size) ? ioc->
+ malloc_size : left;
+ buff_size[sg_used] = sz;
+ buff[sg_used] = kmalloc(sz, GFP_KERNEL);
+ if (buff[sg_used] == NULL) {
status = -ENOMEM;
goto cleanup1;
}
+ if (ioc->Request.Type.Direction == XFER_WRITE) {
+ if (copy_from_user
+ (buff[sg_used], data_ptr, sz)) {
+ status = -EFAULT;
+ goto cleanup1;
+ }
+ } else {
+ memset(buff[sg_used], 0, sz);
+ }
+ left -= sz;
+ data_ptr += sz;
+ sg_used++;
+ }
+ if ((c = cmd_alloc(host, 0)) == NULL) {
+ status = -ENOMEM;
+ goto cleanup1;
+ }
+ c->cmd_type = CMD_IOCTL_PEND;
+ c->Header.ReplyQueue = 0;
+
+ if (ioc->buf_size > 0) {
+ c->Header.SGList = sg_used;
+ c->Header.SGTotal = sg_used;
} else {
- memset(buff[sg_used], 0, sz);
+ c->Header.SGList = 0;
+ c->Header.SGTotal = 0;
}
- left -= sz;
- data_ptr += sz;
- sg_used++;
- }
- if ((c = cmd_alloc(host , 0)) == NULL) {
- status = -ENOMEM;
- goto cleanup1;
- }
- c->cmd_type = CMD_IOCTL_PEND;
- c->Header.ReplyQueue = 0;
-
- if( ioc->buf_size > 0) {
- c->Header.SGList = sg_used;
- c->Header.SGTotal= sg_used;
- } else {
- c->Header.SGList = 0;
- c->Header.SGTotal= 0;
- }
- c->Header.LUN = ioc->LUN_info;
- c->Header.Tag.lower = c->busaddr;
-
- c->Request = ioc->Request;
- if (ioc->buf_size > 0 ) {
- int i;
- for(i=0; i<sg_used; i++) {
- temp64.val = pci_map_single( host->pdev, buff[i],
- buff_size[i],
+ c->Header.LUN = ioc->LUN_info;
+ c->Header.Tag.lower = c->busaddr;
+
+ c->Request = ioc->Request;
+ if (ioc->buf_size > 0) {
+ for (i = 0; i < sg_used; i++) {
+ temp64.val =
+ pci_map_single(host->pdev, buff[i],
+ buff_size[i],
+ PCI_DMA_BIDIRECTIONAL);
+ c->SG[i].Addr.lower =
+ temp64.val32.lower;
+ c->SG[i].Addr.upper =
+ temp64.val32.upper;
+ c->SG[i].Len = buff_size[i];
+ c->SG[i].Ext = 0; /* we are not chaining */
+ }
+ }
+ c->waiting = &wait;
+ /* Put the request on the tail of the request queue */
+ spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+ addQ(&host->reqQ, c);
+ host->Qdepth++;
+ start_io(host);
+ spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+ wait_for_completion(&wait);
+ /* unlock the buffers from DMA */
+ for (i = 0; i < sg_used; i++) {
+ temp64.val32.lower = c->SG[i].Addr.lower;
+ temp64.val32.upper = c->SG[i].Addr.upper;
+ pci_unmap_single(host->pdev,
+ (dma_addr_t) temp64.val, buff_size[i],
PCI_DMA_BIDIRECTIONAL);
- c->SG[i].Addr.lower = temp64.val32.lower;
- c->SG[i].Addr.upper = temp64.val32.upper;
- c->SG[i].Len = buff_size[i];
- c->SG[i].Ext = 0; /* we are not chaining */
}
- }
- c->waiting = &wait;
- /* Put the request on the tail of the request queue */
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- addQ(&host->reqQ, c);
- host->Qdepth++;
- start_io(host);
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
- wait_for_completion(&wait);
- /* unlock the buffers from DMA */
- for(i=0; i<sg_used; i++) {
- temp64.val32.lower = c->SG[i].Addr.lower;
- temp64.val32.upper = c->SG[i].Addr.upper;
- pci_unmap_single( host->pdev, (dma_addr_t) temp64.val,
- buff_size[i], PCI_DMA_BIDIRECTIONAL);
- }
- /* Copy the error information out */
- ioc->error_info = *(c->err_info);
- if (copy_to_user(argp, ioc, sizeof(*ioc))) {
- cmd_free(host, c, 0);
- status = -EFAULT;
- goto cleanup1;
- }
- if (ioc->Request.Type.Direction == XFER_READ) {
- /* Copy the data out of the buffer we created */
- BYTE __user *ptr = ioc->buf;
- for(i=0; i< sg_used; i++) {
- if (copy_to_user(ptr, buff[i], buff_size[i])) {
- cmd_free(host, c, 0);
- status = -EFAULT;
- goto cleanup1;
+ check_ioctl_unit_attention(host, c);
+ /* Copy the error information out */
+ ioc->error_info = *(c->err_info);
+ if (copy_to_user(argp, ioc, sizeof(*ioc))) {
+ cmd_free(host, c, 0);
+ status = -EFAULT;
+ goto cleanup1;
+ }
+ if (ioc->Request.Type.Direction == XFER_READ) {
+ /* Copy the data out of the buffer we created */
+ BYTE __user *ptr = ioc->buf;
+ for (i = 0; i < sg_used; i++) {
+ if (copy_to_user
+ (ptr, buff[i], buff_size[i])) {
+ cmd_free(host, c, 0);
+ status = -EFAULT;
+ goto cleanup1;
+ }
+ ptr += buff_size[i];
}
- ptr += buff_size[i];
}
+ cmd_free(host, c, 0);
+ status = 0;
+ cleanup1:
+ if (buff) {
+ for (i = 0; i < sg_used; i++)
+ kfree(buff[i]);
+ kfree(buff);
+ }
+ kfree(buff_size);
+ kfree(ioc);
+ return status;
}
- cmd_free(host, c, 0);
- status = 0;
-cleanup1:
- if (buff) {
- for(i=0; i<sg_used; i++)
- kfree(buff[i]);
- kfree(buff);
- }
- kfree(buff_size);
- kfree(ioc);
- return(status);
- }
+
+ /* scsi_cmd_ioctl handles these, below, though some are not */
+ /* very meaningful for cciss. SG_IO is the main one people want. */
+
+ case SG_GET_VERSION_NUM:
+ case SG_SET_TIMEOUT:
+ case SG_GET_TIMEOUT:
+ case SG_GET_RESERVED_SIZE:
+ case SG_SET_RESERVED_SIZE:
+ case SG_EMULATED_HOST:
+ case SG_IO:
+ case SCSI_IOCTL_SEND_COMMAND:
+ return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp);
+
+ /* scsi_cmd_ioctl would normally handle these, below, but */
+ /* they aren't a good fit for cciss, as CD-ROMs are */
+ /* not supported, and we don't have any bus/target/lun */
+ /* which we present to the kernel. */
+
+ case CDROM_SEND_PACKET:
+ case CDROMCLOSETRAY:
+ case CDROMEJECT:
+ case SCSI_IOCTL_GET_IDLUN:
+ case SCSI_IOCTL_GET_BUS_NUMBER:
default:
return -ENOTTY;
}
-
}
-/*
- * 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)
+static void cciss_check_queues(ctlr_info_t *h)
{
- int ctlr = host->ctlr, i;
- unsigned long flags;
+ int start_queue = h->next_to_run;
+ int i;
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- if (host->usage_count > 1) {
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
- printk(KERN_WARNING "cciss: Device busy for volume"
- " revalidation (usage=%d)\n", host->usage_count);
- return -EBUSY;
- }
- host->usage_count++;
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+ /* check to see if we have maxed out the number of commands that can
+ * be placed on the queue. If so then exit. We do this check here
+ * in case the interrupt we serviced was from an ioctl and did not
+ * free any new commands.
+ */
+ if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds)
+ return;
- for(i=0; i< NWD; i++) {
- struct gendisk *disk = host->gendisk[i];
- if (disk) {
- request_queue_t *q = disk->queue;
+ /* We have room on the queue for more commands. Now we need to queue
+ * them up. We will also keep track of the next queue to run so
+ * that every queue gets a chance to be started first.
+ */
+ for (i = 0; i < h->highest_lun + 1; i++) {
+ int curr_queue = (start_queue + i) % (h->highest_lun + 1);
+ /* make sure the disk has been added and the drive is real
+ * because this can be called from the middle of init_one.
+ */
+ if (!h->drv[curr_queue])
+ continue;
+ if (!(h->drv[curr_queue]->queue) ||
+ !(h->drv[curr_queue]->heads))
+ continue;
+ blk_start_queue(h->gendisk[curr_queue]->queue);
+
+ /* check to see if we have maxed out the number of commands
+ * that can be placed on the queue.
+ */
+ if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) {
+ if (curr_queue == start_queue) {
+ h->next_to_run =
+ (start_queue + 1) % (h->highest_lun + 1);
+ break;
+ } else {
+ h->next_to_run = curr_queue;
+ break;
+ }
+ }
+ }
+}
- if (disk->flags & GENHD_FL_UP)
- del_gendisk(disk);
- if (q)
- blk_cleanup_queue(q);
+static void cciss_softirq_done(struct request *rq)
+{
+ CommandList_struct *cmd = rq->completion_data;
+ ctlr_info_t *h = hba[cmd->ctlr];
+ SGDescriptor_struct *curr_sg = cmd->SG;
+ unsigned long flags;
+ u64bit temp64;
+ int i, ddir;
+ int sg_index = 0;
+
+ if (cmd->Request.Type.Direction == XFER_READ)
+ ddir = PCI_DMA_FROMDEVICE;
+ else
+ ddir = PCI_DMA_TODEVICE;
+
+ /* command did not need to be retried */
+ /* unmap the DMA mapping for all the scatter gather elements */
+ for (i = 0; i < cmd->Header.SGList; i++) {
+ if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) {
+ cciss_unmap_sg_chain_block(h, cmd);
+ /* Point to the next block */
+ curr_sg = h->cmd_sg_list[cmd->cmdindex];
+ sg_index = 0;
}
+ temp64.val32.lower = curr_sg[sg_index].Addr.lower;
+ temp64.val32.upper = curr_sg[sg_index].Addr.upper;
+ pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len,
+ ddir);
+ ++sg_index;
+ }
+
+#ifdef CCISS_DEBUG
+ printk("Done with %p\n", rq);
+#endif /* CCISS_DEBUG */
+
+ /* set the residual count for pc requests */
+ if (blk_pc_request(rq))
+ rq->resid_len = cmd->err_info->ResidualCnt;
+
+ blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO);
+
+ spin_lock_irqsave(&h->lock, flags);
+ cmd_free(h, cmd, 1);
+ cciss_check_queues(h);
+ spin_unlock_irqrestore(&h->lock, flags);
+}
+
+static inline void log_unit_to_scsi3addr(ctlr_info_t *h,
+ unsigned char scsi3addr[], uint32_t log_unit)
+{
+ memcpy(scsi3addr, h->drv[log_unit]->LunID,
+ sizeof(h->drv[log_unit]->LunID));
+}
+
+/* This function gets the SCSI vendor, model, and revision of a logical drive
+ * via the inquiry page 0. Model, vendor, and rev are set to empty strings if
+ * they cannot be read.
+ */
+static void cciss_get_device_descr(int ctlr, int logvol,
+ char *vendor, char *model, char *rev)
+{
+ int rc;
+ InquiryData_struct *inq_buf;
+ unsigned char scsi3addr[8];
+
+ *vendor = '\0';
+ *model = '\0';
+ *rev = '\0';
+
+ inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
+ if (!inq_buf)
+ return;
+
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, sizeof(*inq_buf), 0,
+ scsi3addr, TYPE_CMD);
+ if (rc == IO_OK) {
+ memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN);
+ vendor[VENDOR_LEN] = '\0';
+ memcpy(model, &inq_buf->data_byte[16], MODEL_LEN);
+ model[MODEL_LEN] = '\0';
+ memcpy(rev, &inq_buf->data_byte[32], REV_LEN);
+ rev[REV_LEN] = '\0';
}
- /*
- * Set the partition and block size structures for all volumes
- * on this controller to zero. We will reread all of this data
- */
- memset(host->drv, 0, sizeof(drive_info_struct)
- * CISS_MAX_LUN);
- /*
- * 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, CCISS_INTR_OFF);
- cciss_getgeometry(ctlr);
- host->access.set_intr_mask(host, CCISS_INTR_ON);
-
- /* Loop through each real device */
- for (i = 0; i < NWD; i++) {
- struct gendisk *disk = host->gendisk[i];
- drive_info_struct *drv = &(host->drv[i]);
- /* we must register the controller even if no disks exist */
- /* this is for the online array utilities */
- if (!drv->heads && i)
- continue;
- blk_queue_hardsect_size(drv->queue, drv->block_size);
- set_capacity(disk, drv->nr_blocks);
- add_disk(disk);
- }
- host->usage_count--;
- return 0;
+ kfree(inq_buf);
+ return;
+}
+
+/* This function gets the serial number of a logical drive via
+ * inquiry page 0x83. Serial no. is 16 bytes. If the serial
+ * number cannot be had, for whatever reason, 16 bytes of 0xff
+ * are returned instead.
+ */
+static void cciss_get_serial_no(int ctlr, int logvol,
+ unsigned char *serial_no, int buflen)
+{
+#define PAGE_83_INQ_BYTES 64
+ int rc;
+ unsigned char *buf;
+ unsigned char scsi3addr[8];
+
+ if (buflen > 16)
+ buflen = 16;
+ memset(serial_no, 0xff, buflen);
+ buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL);
+ if (!buf)
+ return;
+ memset(serial_no, 0, buflen);
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf,
+ PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD);
+ if (rc == IO_OK)
+ memcpy(serial_no, &buf[8], buflen);
+ kfree(buf);
+ return;
+}
+
+/*
+ * cciss_add_disk sets up the block device queue for a logical drive
+ */
+static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
+ int drv_index)
+{
+ disk->queue = blk_init_queue(do_cciss_request, &h->lock);
+ if (!disk->queue)
+ goto init_queue_failure;
+ sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
+ disk->major = h->major;
+ disk->first_minor = drv_index << NWD_SHIFT;
+ disk->fops = &cciss_fops;
+ if (cciss_create_ld_sysfs_entry(h, drv_index))
+ goto cleanup_queue;
+ disk->private_data = h->drv[drv_index];
+ disk->driverfs_dev = &h->drv[drv_index]->dev;
+
+ /* Set up queue information */
+ blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask);
+
+ /* This is a hardware imposed limit. */
+ blk_queue_max_segments(disk->queue, h->maxsgentries);
+
+ blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors);
+
+ blk_queue_softirq_done(disk->queue, cciss_softirq_done);
+
+ disk->queue->queuedata = h;
+
+ blk_queue_logical_block_size(disk->queue,
+ h->drv[drv_index]->block_size);
+
+ /* Make sure all queue data is written out before */
+ /* setting h->drv[drv_index]->queue, as setting this */
+ /* allows the interrupt handler to start the queue */
+ wmb();
+ h->drv[drv_index]->queue = disk->queue;
+ add_disk(disk);
+ return 0;
+
+cleanup_queue:
+ blk_cleanup_queue(disk->queue);
+ disk->queue = NULL;
+init_queue_failure:
+ return -1;
}
/* This function will check the usage_count of the drive to be updated/added.
- * If the usage_count is zero then the drive information will be updated and
- * the disk will be re-registered with the kernel. If not then it will be
- * left alone for the next reboot. The exception to this is disk 0 which
- * will always be left registered with the kernel since it is also the
- * controller node. Any changes to disk 0 will show up on the next
- * reboot.
-*/
-static void cciss_update_drive_info(int ctlr, int drv_index)
- {
+ * If the usage_count is zero and it is a heretofore unknown drive, or,
+ * the drive's capacity, geometry, or serial number has changed,
+ * then the drive information will be updated and the disk will be
+ * re-registered with the kernel. If these conditions don't hold,
+ * then it will be left alone for the next reboot. The exception to this
+ * is disk 0 which will always be left registered with the kernel since it
+ * is also the controller node. Any changes to disk 0 will show up on
+ * the next reboot.
+ */
+static void cciss_update_drive_info(int ctlr, int drv_index, int first_time,
+ int via_ioctl)
+{
ctlr_info_t *h = hba[ctlr];
struct gendisk *disk;
- ReadCapdata_struct *size_buff = NULL;
InquiryData_struct *inq_buff = NULL;
unsigned int block_size;
- unsigned int total_size;
+ sector_t total_size;
unsigned long flags = 0;
int ret = 0;
+ drive_info_struct *drvinfo;
+
+ /* Get information about the disk and modify the driver structure */
+ inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
+ drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL);
+ if (inq_buff == NULL || drvinfo == NULL)
+ goto mem_msg;
+
+ /* testing to see if 16-byte CDBs are already being used */
+ if (h->cciss_read == CCISS_READ_16) {
+ cciss_read_capacity_16(h->ctlr, drv_index,
+ &total_size, &block_size);
+
+ } else {
+ cciss_read_capacity(ctlr, drv_index, &total_size, &block_size);
+ /* if read_capacity returns all F's this volume is >2TB */
+ /* in size so we switch to 16-byte CDB's for all */
+ /* read/write ops */
+ if (total_size == 0xFFFFFFFFULL) {
+ cciss_read_capacity_16(ctlr, drv_index,
+ &total_size, &block_size);
+ h->cciss_read = CCISS_READ_16;
+ h->cciss_write = CCISS_WRITE_16;
+ } else {
+ h->cciss_read = CCISS_READ_10;
+ h->cciss_write = CCISS_WRITE_10;
+ }
+ }
+
+ cciss_geometry_inquiry(ctlr, drv_index, total_size, block_size,
+ inq_buff, drvinfo);
+ drvinfo->block_size = block_size;
+ drvinfo->nr_blocks = total_size + 1;
+
+ cciss_get_device_descr(ctlr, drv_index, drvinfo->vendor,
+ drvinfo->model, drvinfo->rev);
+ cciss_get_serial_no(ctlr, drv_index, drvinfo->serial_no,
+ sizeof(drvinfo->serial_no));
+ /* Save the lunid in case we deregister the disk, below. */
+ memcpy(drvinfo->LunID, h->drv[drv_index]->LunID,
+ sizeof(drvinfo->LunID));
+
+ /* Is it the same disk we already know, and nothing's changed? */
+ if (h->drv[drv_index]->raid_level != -1 &&
+ ((memcmp(drvinfo->serial_no,
+ h->drv[drv_index]->serial_no, 16) == 0) &&
+ drvinfo->block_size == h->drv[drv_index]->block_size &&
+ drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks &&
+ drvinfo->heads == h->drv[drv_index]->heads &&
+ drvinfo->sectors == h->drv[drv_index]->sectors &&
+ drvinfo->cylinders == h->drv[drv_index]->cylinders))
+ /* The disk is unchanged, nothing to update */
+ goto freeret;
- /* if the disk already exists then deregister it before proceeding*/
- if (h->drv[drv_index].raid_level != -1){
+ /* If we get here it's not the same disk, or something's changed,
+ * so we need to * deregister it, and re-register it, if it's not
+ * in use.
+ * If the disk already exists then deregister it before proceeding
+ * (unless it's the first disk (for the controller node).
+ */
+ if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) {
+ printk(KERN_WARNING "disk %d has changed.\n", drv_index);
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
- h->drv[drv_index].busy_configuring = 1;
+ h->drv[drv_index]->busy_configuring = 1;
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- ret = deregister_disk(h->gendisk[drv_index],
- &h->drv[drv_index], 0);
- h->drv[drv_index].busy_configuring = 0;
+
+ /* deregister_disk sets h->drv[drv_index]->queue = NULL
+ * which keeps the interrupt handler from starting
+ * the queue.
+ */
+ ret = deregister_disk(h, drv_index, 0, via_ioctl);
}
/* If the disk is in use return */
if (ret)
- return;
+ goto freeret;
-
- /* Get information about the disk and modify the driver sturcture */
- size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
- if (size_buff == NULL)
- goto mem_msg;
- inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
- if (inq_buff == NULL)
- goto mem_msg;
-
- cciss_read_capacity(ctlr, drv_index, size_buff, 1,
- &total_size, &block_size);
- cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
- inq_buff, &h->drv[drv_index]);
+ /* Save the new information from cciss_geometry_inquiry
+ * and serial number inquiry. If the disk was deregistered
+ * above, then h->drv[drv_index] will be NULL.
+ */
+ if (h->drv[drv_index] == NULL) {
+ drvinfo->device_initialized = 0;
+ h->drv[drv_index] = drvinfo;
+ drvinfo = NULL; /* so it won't be freed below. */
+ } else {
+ /* special case for cxd0 */
+ h->drv[drv_index]->block_size = drvinfo->block_size;
+ h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks;
+ h->drv[drv_index]->heads = drvinfo->heads;
+ h->drv[drv_index]->sectors = drvinfo->sectors;
+ h->drv[drv_index]->cylinders = drvinfo->cylinders;
+ h->drv[drv_index]->raid_level = drvinfo->raid_level;
+ memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16);
+ memcpy(h->drv[drv_index]->vendor, drvinfo->vendor,
+ VENDOR_LEN + 1);
+ memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1);
+ memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1);
+ }
++h->num_luns;
disk = h->gendisk[drv_index];
- set_capacity(disk, h->drv[drv_index].nr_blocks);
-
+ set_capacity(disk, h->drv[drv_index]->nr_blocks);
- /* if it's the controller it's already added */
- if (drv_index){
- disk->queue = blk_init_queue(do_cciss_request, &h->lock);
-
- /* Set up queue information */
- disk->queue->backing_dev_info.ra_pages = READ_AHEAD;
- blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask);
-
- /* This is a hardware imposed limit. */
- blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
-
- /* This is a limit in the driver and could be eliminated. */
- blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
-
- blk_queue_max_sectors(disk->queue, 512);
-
- disk->queue->queuedata = hba[ctlr];
-
- blk_queue_hardsect_size(disk->queue,
- hba[ctlr]->drv[drv_index].block_size);
-
- h->drv[drv_index].queue = disk->queue;
- add_disk(disk);
+ /* If it's not disk 0 (drv_index != 0)
+ * or if it was disk 0, but there was previously
+ * no actual corresponding configured logical drive
+ * (raid_leve == -1) then we want to update the
+ * logical drive's information.
+ */
+ if (drv_index || first_time) {
+ if (cciss_add_disk(h, disk, drv_index) != 0) {
+ cciss_free_gendisk(h, drv_index);
+ cciss_free_drive_info(h, drv_index);
+ printk(KERN_WARNING "cciss:%d could not update "
+ "disk %d\n", h->ctlr, drv_index);
+ --h->num_luns;
+ }
}
freeret:
- kfree(size_buff);
kfree(inq_buff);
+ kfree(drvinfo);
return;
mem_msg:
printk(KERN_ERR "cciss: out of memory\n");
}
/* This function will find the first index of the controllers drive array
- * that has a -1 for the raid_level and will return that index. This is
- * where new drives will be added. If the index to be returned is greater
- * than the highest_lun index for the controller then highest_lun is set
- * to this new index. If there are no available indexes then -1 is returned.
-*/
-static int cciss_find_free_drive_index(int ctlr)
+ * that has a null drv pointer and allocate the drive info struct and
+ * will return that index This is where new drives will be added.
+ * If the index to be returned is greater than the highest_lun index for
+ * the controller then highest_lun is set * to this new index.
+ * If there are no available indexes or if tha allocation fails, then -1
+ * is returned. * "controller_node" is used to know if this is a real
+ * logical drive, or just the controller node, which determines if this
+ * counts towards highest_lun.
+ */
+static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node)
{
int i;
+ drive_info_struct *drv;
+
+ /* Search for an empty slot for our drive info */
+ for (i = 0; i < CISS_MAX_LUN; i++) {
+
+ /* if not cxd0 case, and it's occupied, skip it. */
+ if (h->drv[i] && i != 0)
+ continue;
+ /*
+ * If it's cxd0 case, and drv is alloc'ed already, and a
+ * disk is configured there, skip it.
+ */
+ if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1)
+ continue;
- for (i=0; i < CISS_MAX_LUN; i++){
- if (hba[ctlr]->drv[i].raid_level == -1){
- if (i > hba[ctlr]->highest_lun)
- hba[ctlr]->highest_lun = i;
+ /*
+ * We've found an empty slot. Update highest_lun
+ * provided this isn't just the fake cxd0 controller node.
+ */
+ if (i > h->highest_lun && !controller_node)
+ h->highest_lun = i;
+
+ /* If adding a real disk at cxd0, and it's already alloc'ed */
+ if (i == 0 && h->drv[i] != NULL)
return i;
+
+ /*
+ * Found an empty slot, not already alloc'ed. Allocate it.
+ * Mark it with raid_level == -1, so we know it's new later on.
+ */
+ drv = kzalloc(sizeof(*drv), GFP_KERNEL);
+ if (!drv)
+ return -1;
+ drv->raid_level = -1; /* so we know it's new */
+ h->drv[i] = drv;
+ return i;
+ }
+ return -1;
+}
+
+static void cciss_free_drive_info(ctlr_info_t *h, int drv_index)
+{
+ kfree(h->drv[drv_index]);
+ h->drv[drv_index] = NULL;
+}
+
+static void cciss_free_gendisk(ctlr_info_t *h, int drv_index)
+{
+ put_disk(h->gendisk[drv_index]);
+ h->gendisk[drv_index] = NULL;
+}
+
+/* cciss_add_gendisk finds a free hba[]->drv structure
+ * and allocates a gendisk if needed, and sets the lunid
+ * in the drvinfo structure. It returns the index into
+ * the ->drv[] array, or -1 if none are free.
+ * is_controller_node indicates whether highest_lun should
+ * count this disk, or if it's only being added to provide
+ * a means to talk to the controller in case no logical
+ * drives have yet been configured.
+ */
+static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[],
+ int controller_node)
+{
+ int drv_index;
+
+ drv_index = cciss_alloc_drive_info(h, controller_node);
+ if (drv_index == -1)
+ return -1;
+
+ /*Check if the gendisk needs to be allocated */
+ if (!h->gendisk[drv_index]) {
+ h->gendisk[drv_index] =
+ alloc_disk(1 << NWD_SHIFT);
+ if (!h->gendisk[drv_index]) {
+ printk(KERN_ERR "cciss%d: could not "
+ "allocate a new disk %d\n",
+ h->ctlr, drv_index);
+ goto err_free_drive_info;
}
}
+ memcpy(h->drv[drv_index]->LunID, lunid,
+ sizeof(h->drv[drv_index]->LunID));
+ if (cciss_create_ld_sysfs_entry(h, drv_index))
+ goto err_free_disk;
+ /* Don't need to mark this busy because nobody */
+ /* else knows about this disk yet to contend */
+ /* for access to it. */
+ h->drv[drv_index]->busy_configuring = 0;
+ wmb();
+ return drv_index;
+
+err_free_disk:
+ cciss_free_gendisk(h, drv_index);
+err_free_drive_info:
+ cciss_free_drive_info(h, drv_index);
return -1;
}
+/* This is for the special case of a controller which
+ * has no logical drives. In this case, we still need
+ * to register a disk so the controller can be accessed
+ * by the Array Config Utility.
+ */
+static void cciss_add_controller_node(ctlr_info_t *h)
+{
+ struct gendisk *disk;
+ int drv_index;
+
+ if (h->gendisk[0] != NULL) /* already did this? Then bail. */
+ return;
+
+ drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1);
+ if (drv_index == -1)
+ goto error;
+ h->drv[drv_index]->block_size = 512;
+ h->drv[drv_index]->nr_blocks = 0;
+ h->drv[drv_index]->heads = 0;
+ h->drv[drv_index]->sectors = 0;
+ h->drv[drv_index]->cylinders = 0;
+ h->drv[drv_index]->raid_level = -1;
+ memset(h->drv[drv_index]->serial_no, 0, 16);
+ disk = h->gendisk[drv_index];
+ if (cciss_add_disk(h, disk, drv_index) == 0)
+ return;
+ cciss_free_gendisk(h, drv_index);
+ cciss_free_drive_info(h, drv_index);
+error:
+ printk(KERN_WARNING "cciss%d: could not "
+ "add disk 0.\n", h->ctlr);
+ return;
+}
+
/* This function will add and remove logical drives from the Logical
- * drive array of the controller and maintain persistancy of ordering
+ * drive array of the controller and maintain persistency of ordering
* so that mount points are preserved until the next reboot. This allows
* for the removal of logical drives in the middle of the drive array
* without a re-ordering of those drives.
* INPUT
* h = The controller to perform the operations on
- * del_disk = The disk to remove if specified. If the value given
- * is NULL then no disk is removed.
-*/
-static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk)
+ */
+static int rebuild_lun_table(ctlr_info_t *h, int first_time,
+ int via_ioctl)
{
int ctlr = h->ctlr;
int num_luns;
ReportLunData_struct *ld_buff = NULL;
- drive_info_struct *drv = NULL;
int return_code;
int listlength = 0;
int i;
int drv_found;
int drv_index = 0;
- __u32 lunid = 0;
+ unsigned char lunid[8] = CTLR_LUNID;
unsigned long flags;
+ if (!capable(CAP_SYS_RAWIO))
+ return -EPERM;
+
/* Set busy_configuring flag for this operation */
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
- if (h->num_luns >= CISS_MAX_LUN){
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- return -EINVAL;
- }
-
- if (h->busy_configuring){
+ if (h->busy_configuring) {
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
return -EBUSY;
}
h->busy_configuring = 1;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+
+ ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
+ if (ld_buff == NULL)
+ goto mem_msg;
+
+ return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
+ sizeof(ReportLunData_struct),
+ 0, CTLR_LUNID, TYPE_CMD);
+
+ if (return_code == IO_OK)
+ listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength);
+ else { /* reading number of logical volumes failed */
+ printk(KERN_WARNING "cciss: report logical volume"
+ " command failed\n");
+ listlength = 0;
+ goto freeret;
+ }
- /* if del_disk is NULL then we are being called to add a new disk
- * and update the logical drive table. If it is not NULL then
- * we will check if the disk is in use or not.
+ num_luns = listlength / 8; /* 8 bytes per entry */
+ if (num_luns > CISS_MAX_LUN) {
+ num_luns = CISS_MAX_LUN;
+ printk(KERN_WARNING "cciss: more luns configured"
+ " on controller than can be handled by"
+ " this driver.\n");
+ }
+
+ if (num_luns == 0)
+ cciss_add_controller_node(h);
+
+ /* Compare controller drive array to driver's drive array
+ * to see if any drives are missing on the controller due
+ * to action of Array Config Utility (user deletes drive)
+ * and deregister logical drives which have disappeared.
*/
- if (del_disk != NULL){
- drv = get_drv(del_disk);
- drv->busy_configuring = 1;
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- return_code = deregister_disk(del_disk, drv, 1);
- drv->busy_configuring = 0;
- h->busy_configuring = 0;
- return return_code;
- } else {
- spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
+ for (i = 0; i <= h->highest_lun; i++) {
+ int j;
+ drv_found = 0;
- ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL);
- if (ld_buff == NULL)
- goto mem_msg;
-
- return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
- sizeof(ReportLunData_struct), 0, 0, 0,
- TYPE_CMD);
-
- if (return_code == IO_OK){
- listlength |= (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;
- goto freeret;
- }
+ /* skip holes in the array from already deleted drives */
+ if (h->drv[i] == NULL)
+ continue;
- num_luns = listlength / 8; /* 8 bytes per entry */
- if (num_luns > CISS_MAX_LUN){
- num_luns = CISS_MAX_LUN;
- printk(KERN_WARNING "cciss: more luns configured"
- " on controller than can be handled by"
- " this driver.\n");
+ for (j = 0; j < num_luns; j++) {
+ memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid));
+ if (memcmp(h->drv[i]->LunID, lunid,
+ sizeof(lunid)) == 0) {
+ drv_found = 1;
+ break;
+ }
}
+ if (!drv_found) {
+ /* Deregister it from the OS, it's gone. */
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ h->drv[i]->busy_configuring = 1;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return_code = deregister_disk(h, i, 1, via_ioctl);
+ if (h->drv[i] != NULL)
+ h->drv[i]->busy_configuring = 0;
+ }
+ }
- /* Compare controller drive array to drivers drive array.
- * Check for updates in the drive information and any new drives
- * on the controller.
- */
- for (i=0; i < num_luns; i++){
- int j;
-
- drv_found = 0;
-
- 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]);
-
- /* Find if the LUN is already in the drive array
- * of the controller. If so then update its info
- * if not is use. If it does not exist then find
- * the first free index and add it.
- */
- for (j=0; j <= h->highest_lun; j++){
- if (h->drv[j].LunID == lunid){
- drv_index = j;
- drv_found = 1;
- }
+ /* Compare controller drive array to driver's drive array.
+ * Check for updates in the drive information and any new drives
+ * on the controller due to ACU adding logical drives, or changing
+ * a logical drive's size, etc. Reregister any new/changed drives
+ */
+ for (i = 0; i < num_luns; i++) {
+ int j;
+
+ drv_found = 0;
+
+ memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid));
+ /* Find if the LUN is already in the drive array
+ * of the driver. If so then update its info
+ * if not in use. If it does not exist then find
+ * the first free index and add it.
+ */
+ for (j = 0; j <= h->highest_lun; j++) {
+ if (h->drv[j] != NULL &&
+ memcmp(h->drv[j]->LunID, lunid,
+ sizeof(h->drv[j]->LunID)) == 0) {
+ drv_index = j;
+ drv_found = 1;
+ break;
}
+ }
- /* check if the drive was found already in the array */
- if (!drv_found){
- drv_index = cciss_find_free_drive_index(ctlr);
- if (drv_index == -1)
- goto freeret;
-
- }
- h->drv[drv_index].LunID = lunid;
- cciss_update_drive_info(ctlr, drv_index);
- } /* end for */
- } /* end else */
+ /* check if the drive was found already in the array */
+ if (!drv_found) {
+ drv_index = cciss_add_gendisk(h, lunid, 0);
+ if (drv_index == -1)
+ goto freeret;
+ }
+ cciss_update_drive_info(ctlr, drv_index, first_time,
+ via_ioctl);
+ } /* end for */
freeret:
kfree(ld_buff);
/* We return -1 here to tell the ACU that we have registered/updated
* all of the drives that we can and to keep it from calling us
* additional times.
- */
+ */
return -1;
mem_msg:
printk(KERN_ERR "cciss: out of memory\n");
+ h->busy_configuring = 0;
goto freeret;
}
+static void cciss_clear_drive_info(drive_info_struct *drive_info)
+{
+ /* zero out the disk size info */
+ drive_info->nr_blocks = 0;
+ drive_info->block_size = 0;
+ drive_info->heads = 0;
+ drive_info->sectors = 0;
+ drive_info->cylinders = 0;
+ drive_info->raid_level = -1;
+ memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no));
+ memset(drive_info->model, 0, sizeof(drive_info->model));
+ memset(drive_info->rev, 0, sizeof(drive_info->rev));
+ memset(drive_info->vendor, 0, sizeof(drive_info->vendor));
+ /*
+ * don't clear the LUNID though, we need to remember which
+ * one this one is.
+ */
+}
+
/* This function will deregister the disk and it's queue from the
* kernel. It must be called with the controller lock held and the
* drv structures busy_configuring flag set. It's parameters are:
* clear_all = This flag determines whether or not the disk information
* is going to be completely cleared out and the highest_lun
* reset. Sometimes we want to clear out information about
- * the disk in preperation for re-adding it. In this case
+ * the disk in preparation for re-adding it. In this case
* the highest_lun should be left unchanged and the LunID
* should not be cleared.
+ * via_ioctl
+ * This indicates whether we've reached this path via ioctl.
+ * This affects the maximum usage count allowed for c0d0 to be messed with.
+ * If this path is reached via ioctl(), then the max_usage_count will
+ * be 1, as the process calling ioctl() has got to have the device open.
+ * If we get here via sysfs, then the max usage count will be zero.
*/
-static int deregister_disk(struct gendisk *disk, drive_info_struct *drv,
- int clear_all)
+static int deregister_disk(ctlr_info_t *h, int drv_index,
+ int clear_all, int via_ioctl)
{
- ctlr_info_t *h = get_host(disk);
+ int i;
+ struct gendisk *disk;
+ drive_info_struct *drv;
+ int recalculate_highest_lun;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
+ drv = h->drv[drv_index];
+ disk = h->gendisk[drv_index];
+
/* make sure logical volume is NOT is use */
- if(clear_all || (h->gendisk[0] == disk)) {
- if (drv->usage_count > 1)
- return -EBUSY;
- }
- else
- if( drv->usage_count > 0 )
- return -EBUSY;
+ if (clear_all || (h->gendisk[0] == disk)) {
+ if (drv->usage_count > via_ioctl)
+ return -EBUSY;
+ } else if (drv->usage_count > 0)
+ return -EBUSY;
+
+ recalculate_highest_lun = (drv == h->drv[h->highest_lun]);
/* invalidate the devices and deregister the disk. If it is disk
* zero do not deregister it but just zero out it's values. This
* allows us to delete disk zero but keep the controller registered.
- */
- if (h->gendisk[0] != disk){
- if (disk) {
- request_queue_t *q = disk->queue;
- if (disk->flags & GENHD_FL_UP)
- del_gendisk(disk);
- if (q) {
- blk_cleanup_queue(q);
- drv->queue = NULL;
+ */
+ if (h->gendisk[0] != disk) {
+ struct request_queue *q = disk->queue;
+ if (disk->flags & GENHD_FL_UP) {
+ cciss_destroy_ld_sysfs_entry(h, drv_index, 0);
+ del_gendisk(disk);
+ }
+ if (q)
+ blk_cleanup_queue(q);
+ /* If clear_all is set then we are deleting the logical
+ * drive, not just refreshing its info. For drives
+ * other than disk 0 we will call put_disk. We do not
+ * do this for disk 0 as we need it to be able to
+ * configure the controller.
+ */
+ if (clear_all){
+ /* This isn't pretty, but we need to find the
+ * disk in our array and NULL our the pointer.
+ * This is so that we will call alloc_disk if
+ * this index is used again later.
+ */
+ for (i=0; i < CISS_MAX_LUN; i++){
+ if (h->gendisk[i] == disk) {
+ h->gendisk[i] = NULL;
+ break;
+ }
}
+ put_disk(disk);
}
+ } else {
+ set_capacity(disk, 0);
+ cciss_clear_drive_info(drv);
}
--h->num_luns;
- /* zero out the disk size info */
- drv->nr_blocks = 0;
- drv->block_size = 0;
- drv->heads = 0;
- drv->sectors = 0;
- drv->cylinders = 0;
- drv->raid_level = -1; /* This can be used as a flag variable to
- * indicate that this element of the drive
- * array is free.
- */
-
- if (clear_all){
- /* check to see if it was the last disk */
- if (drv == h->drv + h->highest_lun) {
- /* if so, find the new hightest lun */
- int i, newhighest =-1;
- for(i=0; i<h->highest_lun; i++) {
+
+ /* if it was the last disk, find the new hightest lun */
+ if (clear_all && recalculate_highest_lun) {
+ int newhighest = -1;
+ for (i = 0; i <= h->highest_lun; i++) {
/* if the disk has size > 0, it is available */
- if (h->drv[i].heads)
+ if (h->drv[i] && h->drv[i]->heads)
newhighest = i;
}
h->highest_lun = newhighest;
}
-
- drv->LunID = 0;
- }
- return(0);
+ return 0;
}
static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
- size_t size,
- unsigned int use_unit_num, /* 0: address the controller,
- 1: address logical volume log_unit,
- 2: periph device address is scsi3addr */
- unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
- int cmd_type)
-{
- ctlr_info_t *h= hba[ctlr];
+ size_t size, __u8 page_code, unsigned char *scsi3addr,
+ int cmd_type)
+{
+ ctlr_info_t *h = hba[ctlr];
u64bit buff_dma_handle;
int status = IO_OK;
c->cmd_type = CMD_IOCTL_PEND;
c->Header.ReplyQueue = 0;
- if( buff != NULL) {
+ if (buff != NULL) {
c->Header.SGList = 1;
- c->Header.SGTotal= 1;
+ c->Header.SGTotal = 1;
} else {
c->Header.SGList = 0;
- c->Header.SGTotal= 0;
+ c->Header.SGTotal = 0;
}
c->Header.Tag.lower = c->busaddr;
+ memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
c->Request.Type.Type = cmd_type;
if (cmd_type == TYPE_CMD) {
- switch(cmd) {
- case CISS_INQUIRY:
- /* If the logical unit number is 0 then, this is going
- to controller so It's a physical command
- mode = 0 target = 0. So we have nothing to write.
- otherwise, if use_unit_num == 1,
- mode = 1(volume set addressing) target = LUNID
- otherwise, if use_unit_num == 2,
- mode = 0(periph dev addr) target = scsi3addr */
- if (use_unit_num == 1) {
- c->Header.LUN.LogDev.VolId=
- h->drv[log_unit].LunID;
- c->Header.LUN.LogDev.Mode = 1;
- } else if (use_unit_num == 2) {
- memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
- c->Header.LUN.LogDev.Mode = 0;
- }
+ switch (cmd) {
+ case CISS_INQUIRY:
/* are we trying to read a vital product page */
- if(page_code != 0) {
+ if (page_code != 0) {
c->Request.CDB[1] = 0x01;
c->Request.CDB[2] = page_code;
}
c->Request.CDBLen = 6;
- c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.Timeout = 0;
- c->Request.CDB[0] = CISS_INQUIRY;
- c->Request.CDB[4] = size & 0xFF;
- break;
+ c->Request.CDB[0] = CISS_INQUIRY;
+ c->Request.CDB[4] = size & 0xFF;
+ break;
case CISS_REPORT_LOG:
case CISS_REPORT_PHYS:
- /* Talking to controller so It's a physical command
+ /* Talking to controller so It's a physical command
mode = 00 target = 0. Nothing to write.
- */
+ */
c->Request.CDBLen = 12;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.Timeout = 0;
c->Request.CDB[0] = cmd;
- c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
+ c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
c->Request.CDB[7] = (size >> 16) & 0xFF;
c->Request.CDB[8] = (size >> 8) & 0xFF;
c->Request.CDB[9] = size & 0xFF;
break;
case CCISS_READ_CAPACITY:
- c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
- c->Header.LUN.LogDev.Mode = 1;
c->Request.CDBLen = 10;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.Timeout = 0;
c->Request.CDB[0] = cmd;
- break;
+ break;
+ case CCISS_READ_CAPACITY_16:
+ c->Request.CDBLen = 16;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction = XFER_READ;
+ c->Request.Timeout = 0;
+ c->Request.CDB[0] = cmd;
+ c->Request.CDB[1] = 0x10;
+ c->Request.CDB[10] = (size >> 24) & 0xFF;
+ c->Request.CDB[11] = (size >> 16) & 0xFF;
+ c->Request.CDB[12] = (size >> 8) & 0xFF;
+ c->Request.CDB[13] = size & 0xFF;
+ c->Request.Timeout = 0;
+ c->Request.CDB[0] = cmd;
+ break;
case CCISS_CACHE_FLUSH:
c->Request.CDBLen = 12;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Timeout = 0;
c->Request.CDB[0] = BMIC_WRITE;
c->Request.CDB[6] = BMIC_CACHE_FLUSH;
- break;
+ break;
+ case TEST_UNIT_READY:
+ c->Request.CDBLen = 6;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction = XFER_NONE;
+ c->Request.Timeout = 0;
+ break;
default:
printk(KERN_WARNING
- "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
- return(IO_ERROR);
+ "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
+ return IO_ERROR;
}
} else if (cmd_type == TYPE_MSG) {
switch (cmd) {
- case 0: /* ABORT message */
+ case 0: /* ABORT message */
c->Request.CDBLen = 12;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_WRITE;
c->Request.Timeout = 0;
- c->Request.CDB[0] = cmd; /* abort */
- c->Request.CDB[1] = 0; /* abort a command */
+ c->Request.CDB[0] = cmd; /* abort */
+ c->Request.CDB[1] = 0; /* abort a command */
/* buff contains the tag of the command to abort */
memcpy(&c->Request.CDB[4], buff, 8);
break;
- case 1: /* RESET message */
- c->Request.CDBLen = 12;
+ case 1: /* RESET message */
+ c->Request.CDBLen = 16;
c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_WRITE;
+ c->Request.Type.Direction = XFER_NONE;
c->Request.Timeout = 0;
memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
- c->Request.CDB[0] = cmd; /* reset */
- c->Request.CDB[1] = 0x04; /* reset a LUN */
+ c->Request.CDB[0] = cmd; /* reset */
+ c->Request.CDB[1] = 0x03; /* reset a target */
+ break;
case 3: /* No-Op message */
c->Request.CDBLen = 1;
c->Request.Type.Attribute = ATTR_SIMPLE;
break;
default:
printk(KERN_WARNING
- "cciss%d: unknown message type %d\n",
- ctlr, cmd);
+ "cciss%d: unknown message type %d\n", ctlr, cmd);
return IO_ERROR;
}
} else {
printk(KERN_WARNING
- "cciss%d: unknown command type %d\n", ctlr, cmd_type);
+ "cciss%d: unknown command type %d\n", ctlr, cmd_type);
return IO_ERROR;
}
/* Fill in the scatter gather information */
if (size > 0) {
buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
- buff, size, PCI_DMA_BIDIRECTIONAL);
+ buff, size,
+ PCI_DMA_BIDIRECTIONAL);
c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
c->SG[0].Len = size;
- c->SG[0].Ext = 0; /* we are not chaining */
+ c->SG[0].Ext = 0; /* we are not chaining */
}
return status;
}
-static int sendcmd_withirq(__u8 cmd,
- int ctlr,
- void *buff,
- size_t size,
- unsigned int use_unit_num,
- unsigned int log_unit,
- __u8 page_code,
- int cmd_type)
+
+static int check_target_status(ctlr_info_t *h, CommandList_struct *c)
+{
+ switch (c->err_info->ScsiStatus) {
+ case SAM_STAT_GOOD:
+ return IO_OK;
+ case SAM_STAT_CHECK_CONDITION:
+ switch (0xf & c->err_info->SenseInfo[2]) {
+ case 0: return IO_OK; /* no sense */
+ case 1: return IO_OK; /* recovered error */
+ default:
+ if (check_for_unit_attention(h, c))
+ return IO_NEEDS_RETRY;
+ printk(KERN_WARNING "cciss%d: cmd 0x%02x "
+ "check condition, sense key = 0x%02x\n",
+ h->ctlr, c->Request.CDB[0],
+ c->err_info->SenseInfo[2]);
+ }
+ break;
+ default:
+ printk(KERN_WARNING "cciss%d: cmd 0x%02x"
+ "scsi status = 0x%02x\n", h->ctlr,
+ c->Request.CDB[0], c->err_info->ScsiStatus);
+ break;
+ }
+ return IO_ERROR;
+}
+
+static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c)
{
- ctlr_info_t *h = hba[ctlr];
- CommandList_struct *c;
- u64bit buff_dma_handle;
- unsigned long flags;
- int return_status;
- DECLARE_COMPLETION(wait);
-
- if ((c = cmd_alloc(h , 0)) == NULL)
- return -ENOMEM;
- return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
- log_unit, page_code, NULL, cmd_type);
- if (return_status != IO_OK) {
- cmd_free(h, c, 0);
- return return_status;
+ int return_status = IO_OK;
+
+ if (c->err_info->CommandStatus == CMD_SUCCESS)
+ return IO_OK;
+
+ switch (c->err_info->CommandStatus) {
+ case CMD_TARGET_STATUS:
+ return_status = check_target_status(h, c);
+ break;
+ case CMD_DATA_UNDERRUN:
+ case CMD_DATA_OVERRUN:
+ /* expected for inquiry and report lun commands */
+ break;
+ case CMD_INVALID:
+ printk(KERN_WARNING "cciss: cmd 0x%02x is "
+ "reported invalid\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_PROTOCOL_ERR:
+ printk(KERN_WARNING "cciss: cmd 0x%02x has "
+ "protocol error \n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_HARDWARE_ERR:
+ printk(KERN_WARNING "cciss: cmd 0x%02x had "
+ " hardware error\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_CONNECTION_LOST:
+ printk(KERN_WARNING "cciss: cmd 0x%02x had "
+ "connection lost\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_ABORTED:
+ printk(KERN_WARNING "cciss: cmd 0x%02x was "
+ "aborted\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_ABORT_FAILED:
+ printk(KERN_WARNING "cciss: cmd 0x%02x reports "
+ "abort failed\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_UNSOLICITED_ABORT:
+ printk(KERN_WARNING
+ "cciss%d: unsolicited abort 0x%02x\n", h->ctlr,
+ c->Request.CDB[0]);
+ return_status = IO_NEEDS_RETRY;
+ break;
+ default:
+ printk(KERN_WARNING "cciss: cmd 0x%02x returned "
+ "unknown status %x\n", c->Request.CDB[0],
+ c->err_info->CommandStatus);
+ return_status = IO_ERROR;
}
+ return return_status;
+}
+
+static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c,
+ int attempt_retry)
+{
+ DECLARE_COMPLETION_ONSTACK(wait);
+ u64bit buff_dma_handle;
+ unsigned long flags;
+ int return_status = IO_OK;
+
resend_cmd2:
c->waiting = &wait;
-
/* Put the request on the tail of the queue and send it */
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
addQ(&h->reqQ, c);
h->Qdepth++;
start_io(h);
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
-
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+
wait_for_completion(&wait);
- if(c->err_info->CommandStatus != 0)
- { /* an error has occurred */
- switch(c->err_info->CommandStatus)
- {
- case CMD_TARGET_STATUS:
- printk(KERN_WARNING "cciss: cmd %p has "
- " completed with errors\n", c);
- if( c->err_info->ScsiStatus)
- {
- printk(KERN_WARNING "cciss: cmd %p "
- "has SCSI Status = %x\n",
- c,
- c->err_info->ScsiStatus);
- }
+ if (c->err_info->CommandStatus == 0 || !attempt_retry)
+ goto command_done;
- break;
- case CMD_DATA_UNDERRUN:
- case CMD_DATA_OVERRUN:
- /* expected for inquire and report lun commands */
- break;
- case CMD_INVALID:
- printk(KERN_WARNING "cciss: Cmd %p is "
- "reported invalid\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_PROTOCOL_ERR:
- printk(KERN_WARNING "cciss: cmd %p has "
- "protocol error \n", c);
- return_status = IO_ERROR;
- break;
-case CMD_HARDWARE_ERR:
- printk(KERN_WARNING "cciss: cmd %p had "
- " hardware error\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_CONNECTION_LOST:
- printk(KERN_WARNING "cciss: cmd %p had "
- "connection lost\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_ABORTED:
- printk(KERN_WARNING "cciss: cmd %p was "
- "aborted\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_ABORT_FAILED:
- printk(KERN_WARNING "cciss: cmd %p reports "
- "abort failed\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_UNSOLICITED_ABORT:
- printk(KERN_WARNING
- "cciss%d: unsolicited abort %p\n",
- ctlr, c);
- if (c->retry_count < MAX_CMD_RETRIES) {
- printk(KERN_WARNING
- "cciss%d: retrying %p\n",
- ctlr, c);
- c->retry_count++;
- /* erase the old error information */
- memset(c->err_info, 0,
- sizeof(ErrorInfo_struct));
- return_status = IO_OK;
- INIT_COMPLETION(wait);
- goto resend_cmd2;
- }
- return_status = IO_ERROR;
- break;
- default:
- printk(KERN_WARNING "cciss: cmd %p returned "
- "unknown status %x\n", c,
- c->err_info->CommandStatus);
- return_status = IO_ERROR;
- }
- }
+ return_status = process_sendcmd_error(h, c);
+
+ if (return_status == IO_NEEDS_RETRY &&
+ c->retry_count < MAX_CMD_RETRIES) {
+ printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr,
+ c->Request.CDB[0]);
+ c->retry_count++;
+ /* erase the old error information */
+ memset(c->err_info, 0, sizeof(ErrorInfo_struct));
+ return_status = IO_OK;
+ INIT_COMPLETION(wait);
+ goto resend_cmd2;
+ }
+
+command_done:
/* unlock the buffers from DMA */
buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
- pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val,
- c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
- cmd_free(h, c, 0);
- return(return_status);
+ pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
+ c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
+ return return_status;
+}
+
+static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
+ __u8 page_code, unsigned char scsi3addr[],
+ int cmd_type)
+{
+ ctlr_info_t *h = hba[ctlr];
+ CommandList_struct *c;
+ int return_status;
+
+ c = cmd_alloc(h, 0);
+ if (!c)
+ return -ENOMEM;
+ return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code,
+ scsi3addr, cmd_type);
+ if (return_status == IO_OK)
+ return_status = sendcmd_withirq_core(h, c, 1);
+ cmd_free(h, c, 0);
+ return return_status;
}
+
static void cciss_geometry_inquiry(int ctlr, int logvol,
- int withirq, unsigned int total_size,
- unsigned int block_size, InquiryData_struct *inq_buff,
- drive_info_struct *drv)
+ sector_t total_size,
+ unsigned int block_size,
+ InquiryData_struct *inq_buff,
+ drive_info_struct *drv)
{
int return_code;
+ unsigned long t;
+ unsigned char scsi3addr[8];
+
memset(inq_buff, 0, sizeof(InquiryData_struct));
- if (withirq)
- return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
- inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
- else
- return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
- sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff,
+ sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD);
if (return_code == IO_OK) {
- if(inq_buff->data_byte[8] == 0xFF) {
+ if (inq_buff->data_byte[8] == 0xFF) {
printk(KERN_WARNING
- "cciss: reading geometry failed, volume "
- "does not support reading geometry\n");
- drv->block_size = block_size;
- drv->nr_blocks = total_size;
+ "cciss: reading geometry failed, volume "
+ "does not support reading geometry\n");
drv->heads = 255;
- drv->sectors = 32; // Sectors per track
- drv->cylinders = total_size / 255 / 32;
+ drv->sectors = 32; /* Sectors per track */
+ drv->cylinders = total_size + 1;
+ drv->raid_level = RAID_UNKNOWN;
} else {
- unsigned int t;
-
- drv->block_size = block_size;
- drv->nr_blocks = total_size;
drv->heads = inq_buff->data_byte[6];
drv->sectors = inq_buff->data_byte[7];
drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8;
drv->cylinders += inq_buff->data_byte[5];
drv->raid_level = inq_buff->data_byte[8];
- t = drv->heads * drv->sectors;
- if (t > 1) {
- drv->cylinders = total_size/t;
- }
}
- } else { /* Get geometry failed */
+ drv->block_size = block_size;
+ drv->nr_blocks = total_size + 1;
+ t = drv->heads * drv->sectors;
+ if (t > 1) {
+ sector_t real_size = total_size + 1;
+ unsigned long rem = sector_div(real_size, t);
+ if (rem)
+ real_size++;
+ drv->cylinders = real_size;
+ }
+ } else { /* Get geometry failed */
printk(KERN_WARNING "cciss: reading geometry failed\n");
}
- printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n",
- drv->heads, drv->sectors, drv->cylinders);
}
-static void
-cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf,
- int withirq, unsigned int *total_size, unsigned int *block_size)
+
+static void
+cciss_read_capacity(int ctlr, int logvol, sector_t *total_size,
+ unsigned int *block_size)
+{
+ ReadCapdata_struct *buf;
+ int return_code;
+ unsigned char scsi3addr[8];
+
+ buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
+ if (!buf) {
+ printk(KERN_WARNING "cciss: out of memory\n");
+ return;
+ }
+
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, buf,
+ sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD);
+ if (return_code == IO_OK) {
+ *total_size = be32_to_cpu(*(__be32 *) buf->total_size);
+ *block_size = be32_to_cpu(*(__be32 *) buf->block_size);
+ } else { /* read capacity command failed */
+ printk(KERN_WARNING "cciss: read capacity failed\n");
+ *total_size = 0;
+ *block_size = BLOCK_SIZE;
+ }
+ kfree(buf);
+}
+
+static void cciss_read_capacity_16(int ctlr, int logvol,
+ sector_t *total_size, unsigned int *block_size)
{
+ ReadCapdata_struct_16 *buf;
int return_code;
- memset(buf, 0, sizeof(*buf));
- if (withirq)
- return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
- ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
- else
- return_code = sendcmd(CCISS_READ_CAPACITY,
- ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
+ unsigned char scsi3addr[8];
+
+ buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL);
+ if (!buf) {
+ printk(KERN_WARNING "cciss: out of memory\n");
+ return;
+ }
+
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16,
+ ctlr, buf, sizeof(ReadCapdata_struct_16),
+ 0, scsi3addr, TYPE_CMD);
if (return_code == IO_OK) {
- *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1;
- *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0]));
- } else { /* read capacity command failed */
+ *total_size = be64_to_cpu(*(__be64 *) buf->total_size);
+ *block_size = be32_to_cpu(*(__be32 *) buf->block_size);
+ } else { /* read capacity command failed */
printk(KERN_WARNING "cciss: read capacity failed\n");
*total_size = 0;
*block_size = BLOCK_SIZE;
}
- printk(KERN_INFO " blocks= %u block_size= %d\n",
- *total_size, *block_size);
- return;
+ printk(KERN_INFO " blocks= %llu block_size= %d\n",
+ (unsigned long long)*total_size+1, *block_size);
+ kfree(buf);
}
static int cciss_revalidate(struct gendisk *disk)
ctlr_info_t *h = get_host(disk);
drive_info_struct *drv = get_drv(disk);
int logvol;
- int FOUND=0;
+ int FOUND = 0;
unsigned int block_size;
- unsigned int total_size;
- ReadCapdata_struct *size_buff = NULL;
+ sector_t total_size;
InquiryData_struct *inq_buff = NULL;
- for(logvol=0; logvol < CISS_MAX_LUN; logvol++)
- {
- if(h->drv[logvol].LunID == drv->LunID) {
- FOUND=1;
+ for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
+ if (memcmp(h->drv[logvol]->LunID, drv->LunID,
+ sizeof(drv->LunID)) == 0) {
+ FOUND = 1;
break;
}
}
- if (!FOUND) return 1;
-
- size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL);
- if (size_buff == NULL)
- {
- printk(KERN_WARNING "cciss: out of memory\n");
- return 1;
- }
- inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL);
- if (inq_buff == NULL)
- {
- printk(KERN_WARNING "cciss: out of memory\n");
- kfree(size_buff);
- return 1;
- }
+ if (!FOUND)
+ return 1;
- cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size);
- cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv);
+ inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
+ if (inq_buff == NULL) {
+ printk(KERN_WARNING "cciss: out of memory\n");
+ return 1;
+ }
+ if (h->cciss_read == CCISS_READ_10) {
+ cciss_read_capacity(h->ctlr, logvol,
+ &total_size, &block_size);
+ } else {
+ cciss_read_capacity_16(h->ctlr, logvol,
+ &total_size, &block_size);
+ }
+ cciss_geometry_inquiry(h->ctlr, logvol, total_size, block_size,
+ inq_buff, drv);
- blk_queue_hardsect_size(drv->queue, drv->block_size);
+ blk_queue_logical_block_size(drv->queue, drv->block_size);
set_capacity(disk, drv->nr_blocks);
- kfree(size_buff);
kfree(inq_buff);
return 0;
}
/*
- * Wait polling for a command to complete.
- * The memory mapped FIFO is polled for the completion.
- * Used only at init time, interrupts from the HBA are disabled.
+ * Map (physical) PCI mem into (virtual) kernel space
*/
-static unsigned long pollcomplete(int ctlr)
-{
- unsigned long done;
- int i;
-
- /* Wait (up to 20 seconds) for a command to complete */
-
- for (i = 20 * HZ; i > 0; i--) {
- done = hba[ctlr]->access.command_completed(hba[ctlr]);
- if (done == FIFO_EMPTY)
- schedule_timeout_uninterruptible(1);
- else
- return (done);
- }
- /* Invalid address to tell caller we ran out of time */
- return 1;
-}
-
-static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete)
+static void __iomem *remap_pci_mem(ulong base, ulong size)
{
- /* We get in here if sendcmd() is polling for completions
- and gets some command back that it wasn't expecting --
- something other than that which it just sent down.
- Ordinarily, that shouldn't happen, but it can happen when
- the scsi tape stuff gets into error handling mode, and
- starts using sendcmd() to try to abort commands and
- reset tape drives. In that case, sendcmd may pick up
- completions of commands that were sent to logical drives
- through the block i/o system, or cciss ioctls completing, etc.
- In that case, we need to save those completions for later
- processing by the interrupt handler.
- */
-
-#ifdef CONFIG_CISS_SCSI_TAPE
- struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects;
-
- /* If it's not the scsi tape stuff doing error handling, (abort */
- /* or reset) then we don't expect anything weird. */
- if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) {
-#endif
- printk( KERN_WARNING "cciss cciss%d: SendCmd "
- "Invalid command list address returned! (%lx)\n",
- ctlr, complete);
- /* not much we can do. */
-#ifdef CONFIG_CISS_SCSI_TAPE
- return 1;
- }
+ ulong page_base = ((ulong) base) & PAGE_MASK;
+ ulong page_offs = ((ulong) base) - page_base;
+ void __iomem *page_remapped = ioremap(page_base, page_offs + size);
- /* We've sent down an abort or reset, but something else
- has completed */
- if (srl->ncompletions >= (NR_CMDS + 2)) {
- /* Uh oh. No room to save it for later... */
- printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, "
- "reject list overflow, command lost!\n", ctlr);
- return 1;
- }
- /* Save it for later */
- srl->complete[srl->ncompletions] = complete;
- srl->ncompletions++;
-#endif
- return 0;
+ return page_remapped ? (page_remapped + page_offs) : NULL;
}
/*
- * Send a command to the controller, and wait for it to complete.
- * Only used at init time.
+ * Takes jobs of the Q and sends them to the hardware, then puts it on
+ * the Q to wait for completion.
*/
-static int sendcmd(
- __u8 cmd,
- int ctlr,
- void *buff,
- size_t size,
- unsigned int use_unit_num, /* 0: address the controller,
- 1: address logical volume log_unit,
- 2: periph device address is scsi3addr */
- unsigned int log_unit,
- __u8 page_code,
- unsigned char *scsi3addr,
- int cmd_type)
+static void start_io(ctlr_info_t *h)
{
CommandList_struct *c;
- int i;
- unsigned long complete;
- ctlr_info_t *info_p= hba[ctlr];
- u64bit buff_dma_handle;
- int status, done = 0;
-
- if ((c = cmd_alloc(info_p, 1)) == NULL) {
- printk(KERN_WARNING "cciss: unable to get memory");
- return(IO_ERROR);
- }
- status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
- log_unit, page_code, scsi3addr, cmd_type);
- if (status != IO_OK) {
- cmd_free(info_p, c, 1);
- return status;
- }
-resend_cmd1:
- /*
- * Disable interrupt
- */
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss: turning intr off\n");
-#endif /* CCISS_DEBUG */
- info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
-
- /* Make sure there is room in the command FIFO */
- /* Actually it should be completely empty at this time */
- /* unless we are in here doing error handling for the scsi */
- /* tape side of the driver. */
- for (i = 200000; i > 0; i--)
- {
- /* if fifo isn't full go */
- if (!(info_p->access.fifo_full(info_p)))
- {
-
- break;
- }
- udelay(10);
- printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
- " waiting!\n", ctlr);
- }
- /*
- * Send the cmd
- */
- info_p->access.submit_command(info_p, c);
- done = 0;
- do {
- complete = pollcomplete(ctlr);
-
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss: command completed\n");
-#endif /* CCISS_DEBUG */
-
- if (complete == 1) {
- printk( KERN_WARNING
- "cciss cciss%d: SendCmd Timeout out, "
- "No command list address returned!\n",
- ctlr);
- status = IO_ERROR;
- done = 1;
- break;
- }
-
- /* This will need to change for direct lookup completions */
- if ( (complete & CISS_ERROR_BIT)
- && (complete & ~CISS_ERROR_BIT) == c->busaddr)
- {
- /* if data overrun or underun on Report command
- ignore it
- */
- if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
- (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
- (c->Request.CDB[0] == CISS_INQUIRY)) &&
- ((c->err_info->CommandStatus ==
- CMD_DATA_OVERRUN) ||
- (c->err_info->CommandStatus ==
- CMD_DATA_UNDERRUN)
- ))
- {
- complete = c->busaddr;
- } else {
- if (c->err_info->CommandStatus ==
- CMD_UNSOLICITED_ABORT) {
- printk(KERN_WARNING "cciss%d: "
- "unsolicited abort %p\n",
- ctlr, c);
- if (c->retry_count < MAX_CMD_RETRIES) {
- printk(KERN_WARNING
- "cciss%d: retrying %p\n",
- ctlr, c);
- c->retry_count++;
- /* erase the old error */
- /* information */
- memset(c->err_info, 0,
- sizeof(ErrorInfo_struct));
- goto resend_cmd1;
- } else {
- printk(KERN_WARNING
- "cciss%d: retried %p too "
- "many times\n", ctlr, c);
- status = IO_ERROR;
- goto cleanup1;
- }
- } else if (c->err_info->CommandStatus == CMD_UNABORTABLE) {
- printk(KERN_WARNING "cciss%d: command could not be aborted.\n", ctlr);
- status = IO_ERROR;
- goto cleanup1;
- }
- printk(KERN_WARNING "ciss ciss%d: sendcmd"
- " Error %x \n", ctlr,
- c->err_info->CommandStatus);
- printk(KERN_WARNING "ciss ciss%d: sendcmd"
- " offensive info\n"
- " size %x\n num %x value %x\n", ctlr,
- c->err_info->MoreErrInfo.Invalid_Cmd.offense_size,
- c->err_info->MoreErrInfo.Invalid_Cmd.offense_num,
- c->err_info->MoreErrInfo.Invalid_Cmd.offense_value);
- status = IO_ERROR;
- goto cleanup1;
- }
- }
- /* This will need changing for direct lookup completions */
- if (complete != c->busaddr) {
- if (add_sendcmd_reject(cmd, ctlr, complete) != 0) {
- BUG(); /* we are pretty much hosed if we get here. */
- }
- continue;
- } else
- done = 1;
- } while (!done);
-
-cleanup1:
- /* unlock the data buffer from DMA */
- buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
- buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
- pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
- c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
-#ifdef CONFIG_CISS_SCSI_TAPE
- /* if we saved some commands for later, process them now. */
- if (info_p->scsi_rejects.ncompletions > 0)
- do_cciss_intr(0, info_p, NULL);
-#endif
- cmd_free(info_p, c, 1);
- return (status);
-}
-/*
- * Map (physical) PCI mem into (virtual) kernel space
- */
-static void __iomem *remap_pci_mem(ulong base, ulong size)
-{
- ulong page_base = ((ulong) base) & PAGE_MASK;
- ulong page_offs = ((ulong) base) - page_base;
- void __iomem *page_remapped = ioremap(page_base, page_offs+size);
-
- return page_remapped ? (page_remapped + page_offs) : NULL;
-}
-/*
- * Takes jobs of the Q and sends them to the hardware, then puts it on
- * the Q to wait for completion.
- */
-static void start_io( ctlr_info_t *h)
-{
- CommandList_struct *c;
-
- while(( c = h->reqQ) != NULL )
- {
+ while (!hlist_empty(&h->reqQ)) {
+ c = hlist_entry(h->reqQ.first, CommandList_struct, list);
/* can't do anything if fifo is full */
if ((h->access.fifo_full(h))) {
printk(KERN_WARNING "cciss: fifo full\n");
break;
}
- /* Get the first entry from the Request Q */
- removeQ(&(h->reqQ), c);
+ /* Get the first entry from the Request Q */
+ removeQ(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 bio *bio, int status)
-{
- while (bio) {
- struct bio *xbh = bio->bi_next;
- int nr_sectors = bio_sectors(bio);
+ /* Tell the controller execute command */
+ h->access.submit_command(h, c);
- bio->bi_next = NULL;
- blk_finished_io(len);
- bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO);
- bio = xbh;
+ /* Put job onto the completed Q */
+ addQ(&h->cmpQ, c);
}
+}
-}
/* Assumes that CCISS_LOCK(h->ctlr) is held. */
/* Zeros out the error record and then resends the command back */
/* to the controller */
-static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c)
+static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c)
{
/* erase the old error information */
memset(c->err_info, 0, sizeof(ErrorInfo_struct));
/* add it to software queue and then send it to the controller */
- addQ(&(h->reqQ),c);
+ addQ(&h->reqQ, c);
h->Qdepth++;
- if(h->Qdepth > h->maxQsinceinit)
+ if (h->Qdepth > h->maxQsinceinit)
h->maxQsinceinit = h->Qdepth;
start_io(h);
}
-static void cciss_softirq_done(struct request *rq)
+static inline unsigned int make_status_bytes(unsigned int scsi_status_byte,
+ unsigned int msg_byte, unsigned int host_byte,
+ unsigned int driver_byte)
{
- CommandList_struct *cmd = rq->completion_data;
- ctlr_info_t *h = hba[cmd->ctlr];
- unsigned long flags;
- u64bit temp64;
- int i, ddir;
+ /* inverse of macros in scsi.h */
+ return (scsi_status_byte & 0xff) |
+ ((msg_byte & 0xff) << 8) |
+ ((host_byte & 0xff) << 16) |
+ ((driver_byte & 0xff) << 24);
+}
- if (cmd->Request.Type.Direction == XFER_READ)
- ddir = PCI_DMA_FROMDEVICE;
+static inline int evaluate_target_status(ctlr_info_t *h,
+ CommandList_struct *cmd, int *retry_cmd)
+{
+ unsigned char sense_key;
+ unsigned char status_byte, msg_byte, host_byte, driver_byte;
+ int error_value;
+
+ *retry_cmd = 0;
+ /* If we get in here, it means we got "target status", that is, scsi status */
+ status_byte = cmd->err_info->ScsiStatus;
+ driver_byte = DRIVER_OK;
+ msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */
+
+ if (blk_pc_request(cmd->rq))
+ host_byte = DID_PASSTHROUGH;
else
- ddir = PCI_DMA_TODEVICE;
+ host_byte = DID_OK;
- /* command did not need to be retried */
- /* unmap the DMA mapping for all the scatter gather elements */
- for(i=0; i<cmd->Header.SGList; i++) {
- temp64.val32.lower = cmd->SG[i].Addr.lower;
- temp64.val32.upper = cmd->SG[i].Addr.upper;
- pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir);
+ error_value = make_status_bytes(status_byte, msg_byte,
+ host_byte, driver_byte);
+
+ if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) {
+ if (!blk_pc_request(cmd->rq))
+ printk(KERN_WARNING "cciss: cmd %p "
+ "has SCSI Status 0x%x\n",
+ cmd, cmd->err_info->ScsiStatus);
+ return error_value;
}
- complete_buffers(rq->bio, rq->errors);
+ /* check the sense key */
+ sense_key = 0xf & cmd->err_info->SenseInfo[2];
+ /* no status or recovered error */
+ if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq))
+ error_value = 0;
-#ifdef CCISS_DEBUG
- printk("Done with %p\n", rq);
-#endif /* CCISS_DEBUG */
+ if (check_for_unit_attention(h, cmd)) {
+ *retry_cmd = !blk_pc_request(cmd->rq);
+ return 0;
+ }
- spin_lock_irqsave(&h->lock, flags);
- end_that_request_last(rq, rq->errors);
- cmd_free(h, cmd,1);
- spin_unlock_irqrestore(&h->lock, flags);
+ if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */
+ if (error_value != 0)
+ printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION"
+ " sense key = 0x%x\n", cmd, sense_key);
+ return error_value;
+ }
+
+ /* SG_IO or similar, copy sense data back */
+ if (cmd->rq->sense) {
+ if (cmd->rq->sense_len > cmd->err_info->SenseLen)
+ cmd->rq->sense_len = cmd->err_info->SenseLen;
+ memcpy(cmd->rq->sense, cmd->err_info->SenseInfo,
+ cmd->rq->sense_len);
+ } else
+ cmd->rq->sense_len = 0;
+
+ return error_value;
}
-/* checks the status of the job and calls complete buffers to mark all
+/* checks the status of the job and calls complete buffers to mark all
* buffers for the completed job. Note that this function does not need
* to hold the hba/queue lock.
- */
-static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd,
- int timeout)
+ */
+static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd,
+ int timeout)
{
- int status = 1;
int retry_cmd = 0;
-
+ struct request *rq = cmd->rq;
+
+ rq->errors = 0;
+
if (timeout)
- status = 0;
+ rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT);
- if(cmd->err_info->CommandStatus != 0)
- { /* an error has occurred */
- switch(cmd->err_info->CommandStatus)
- {
- unsigned char sense_key;
- case CMD_TARGET_STATUS:
- status = 0;
-
- if( cmd->err_info->ScsiStatus == 0x02)
- {
- printk(KERN_WARNING "cciss: cmd %p "
- "has CHECK CONDITION "
- " byte 2 = 0x%x\n", cmd,
- cmd->err_info->SenseInfo[2]
- );
- /* check the sense key */
- sense_key = 0xf &
- cmd->err_info->SenseInfo[2];
- /* no status or recovered error */
- if((sense_key == 0x0) ||
- (sense_key == 0x1))
- {
- status = 1;
- }
- } else
- {
- printk(KERN_WARNING "cciss: cmd %p "
- "has SCSI Status 0x%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%d: unsolicited "
- "abort %p\n", h->ctlr, cmd);
- if (cmd->retry_count < MAX_CMD_RETRIES) {
- retry_cmd=1;
- printk(KERN_WARNING
- "cciss%d: retrying %p\n",
- h->ctlr, cmd);
- cmd->retry_count++;
- } else
- printk(KERN_WARNING
- "cciss%d: %p retried too "
- "many times\n", h->ctlr, cmd);
- 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;
+ if (cmd->err_info->CommandStatus == 0) /* no error has occurred */
+ goto after_error_processing;
+
+ switch (cmd->err_info->CommandStatus) {
+ case CMD_TARGET_STATUS:
+ rq->errors = evaluate_target_status(h, cmd, &retry_cmd);
+ break;
+ case CMD_DATA_UNDERRUN:
+ if (blk_fs_request(cmd->rq)) {
+ printk(KERN_WARNING "cciss: cmd %p has"
+ " completed with data underrun "
+ "reported\n", cmd);
+ cmd->rq->resid_len = cmd->err_info->ResidualCnt;
}
+ break;
+ case CMD_DATA_OVERRUN:
+ if (blk_fs_request(cmd->rq))
+ printk(KERN_WARNING "cciss: cmd %p has"
+ " completed with data overrun "
+ "reported\n", cmd);
+ break;
+ case CMD_INVALID:
+ printk(KERN_WARNING "cciss: cmd %p is "
+ "reported invalid\n", cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
+ break;
+ case CMD_PROTOCOL_ERR:
+ printk(KERN_WARNING "cciss: cmd %p has "
+ "protocol error \n", cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
+ break;
+ case CMD_HARDWARE_ERR:
+ printk(KERN_WARNING "cciss: cmd %p had "
+ " hardware error\n", cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
+ break;
+ case CMD_CONNECTION_LOST:
+ printk(KERN_WARNING "cciss: cmd %p had "
+ "connection lost\n", cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
+ break;
+ case CMD_ABORTED:
+ printk(KERN_WARNING "cciss: cmd %p was "
+ "aborted\n", cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT);
+ break;
+ case CMD_ABORT_FAILED:
+ printk(KERN_WARNING "cciss: cmd %p reports "
+ "abort failed\n", cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
+ break;
+ case CMD_UNSOLICITED_ABORT:
+ printk(KERN_WARNING "cciss%d: unsolicited "
+ "abort %p\n", h->ctlr, cmd);
+ if (cmd->retry_count < MAX_CMD_RETRIES) {
+ retry_cmd = 1;
+ printk(KERN_WARNING
+ "cciss%d: retrying %p\n", h->ctlr, cmd);
+ cmd->retry_count++;
+ } else
+ printk(KERN_WARNING
+ "cciss%d: %p retried too "
+ "many times\n", h->ctlr, cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT);
+ break;
+ case CMD_TIMEOUT:
+ printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
+ break;
+ default:
+ printk(KERN_WARNING "cciss: cmd %p returned "
+ "unknown status %x\n", cmd,
+ cmd->err_info->CommandStatus);
+ rq->errors = make_status_bytes(SAM_STAT_GOOD,
+ cmd->err_info->CommandStatus, DRIVER_OK,
+ blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR);
}
+
+after_error_processing:
+
/* We need to return this command */
- if(retry_cmd) {
- resend_cciss_cmd(h,cmd);
+ if (retry_cmd) {
+ resend_cciss_cmd(h, cmd);
return;
- }
-
+ }
cmd->rq->completion_data = cmd;
- cmd->rq->errors = status;
blk_complete_request(cmd->rq);
}
-/*
- * Get a request and submit it to the controller.
+/*
+ * Get a request and submit it to the controller.
*/
-static void do_cciss_request(request_queue_t *q)
+static void do_cciss_request(struct request_queue *q)
{
- ctlr_info_t *h= q->queuedata;
+ ctlr_info_t *h = q->queuedata;
CommandList_struct *c;
- int start_blk, seg;
+ sector_t start_blk;
+ int seg;
struct request *creq;
u64bit temp64;
- struct scatterlist tmp_sg[MAXSGENTRIES];
+ struct scatterlist *tmp_sg;
+ SGDescriptor_struct *curr_sg;
drive_info_struct *drv;
int i, dir;
+ int sg_index = 0;
+ int chained = 0;
/* We call start_io here in case there is a command waiting on the
* queue that has not been sent.
- */
+ */
if (blk_queue_plugged(q))
goto startio;
-queue:
- creq = elv_next_request(q);
+ queue:
+ creq = blk_peek_request(q);
if (!creq)
goto startio;
- if (creq->nr_phys_segments > MAXSGENTRIES)
- BUG();
+ BUG_ON(creq->nr_phys_segments > h->maxsgentries);
- if (( c = cmd_alloc(h, 1)) == NULL)
+ if ((c = cmd_alloc(h, 1)) == NULL)
goto full;
- blkdev_dequeue_request(creq);
+ blk_start_request(creq);
+ tmp_sg = h->scatter_list[c->cmdindex];
spin_unlock_irq(q->queue_lock);
c->cmd_type = CMD_RWREQ;
c->rq = creq;
-
- /* fill in the request */
+
+ /* fill in the request */
drv = creq->rq_disk->private_data;
- c->Header.ReplyQueue = 0; // unused in simple mode
+ c->Header.ReplyQueue = 0; /* unused in simple mode */
/* got command from pool, so use the command block index instead */
/* for direct lookups. */
/* The first 2 bits are reserved for controller error reporting. */
c->Header.Tag.lower = (c->cmdindex << 3);
- c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
- c->Header.LUN.LogDev.VolId= drv->LunID;
- c->Header.LUN.LogDev.Mode = 1;
- c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
- c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction =
- (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE;
- c->Request.Timeout = 0; // Don't time out
- c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE;
- start_blk = creq->sector;
+ c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
+ memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID));
+ c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */
+ c->Request.Type.Type = TYPE_CMD; /* It is a command. */
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction =
+ (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE;
+ c->Request.Timeout = 0; /* Don't time out */
+ c->Request.CDB[0] =
+ (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write;
+ start_blk = blk_rq_pos(creq);
#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector,
- (int) creq->nr_sectors);
-#endif /* CCISS_DEBUG */
+ printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",
+ (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq));
+#endif /* CCISS_DEBUG */
+ sg_init_table(tmp_sg, h->maxsgentries);
seg = blk_rq_map_sg(q, creq, tmp_sg);
- /* get the DMA records for the setup */
+ /* get the DMA records for the setup */
if (c->Request.Type.Direction == XFER_READ)
dir = PCI_DMA_FROMDEVICE;
else
dir = PCI_DMA_TODEVICE;
- for (i=0; i<seg; i++)
- {
- c->SG[i].Len = tmp_sg[i].length;
- temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page,
- tmp_sg[i].offset, tmp_sg[i].length,
- dir);
- c->SG[i].Addr.lower = temp64.val32.lower;
- c->SG[i].Addr.upper = temp64.val32.upper;
- c->SG[i].Ext = 0; // we are not chaining
- }
- /* track how many SG entries we are using */
- if( seg > h->maxSG)
- h->maxSG = seg;
+ curr_sg = c->SG;
+ sg_index = 0;
+ chained = 0;
+
+ for (i = 0; i < seg; i++) {
+ if (((sg_index+1) == (h->max_cmd_sgentries)) &&
+ !chained && ((seg - i) > 1)) {
+ /* Point to next chain block. */
+ curr_sg = h->cmd_sg_list[c->cmdindex];
+ sg_index = 0;
+ chained = 1;
+ }
+ curr_sg[sg_index].Len = tmp_sg[i].length;
+ temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]),
+ tmp_sg[i].offset,
+ tmp_sg[i].length, dir);
+ curr_sg[sg_index].Addr.lower = temp64.val32.lower;
+ curr_sg[sg_index].Addr.upper = temp64.val32.upper;
+ curr_sg[sg_index].Ext = 0; /* we are not chaining */
+ ++sg_index;
+ }
+ if (chained)
+ cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex],
+ (seg - (h->max_cmd_sgentries - 1)) *
+ sizeof(SGDescriptor_struct));
+
+ /* track how many SG entries we are using */
+ if (seg > h->maxSG)
+ h->maxSG = seg;
#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, 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]= (creq->nr_sectors >> 8) & 0xff;
- c->Request.CDB[8]= creq->nr_sectors & 0xff;
- c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
+ printk(KERN_DEBUG "cciss: Submitting %ld sectors in %d segments "
+ "chained[%d]\n",
+ blk_rq_sectors(creq), seg, chained);
+#endif /* CCISS_DEBUG */
+
+ c->Header.SGList = c->Header.SGTotal = seg + chained;
+ if (seg > h->max_cmd_sgentries)
+ c->Header.SGList = h->max_cmd_sgentries;
+
+ if (likely(blk_fs_request(creq))) {
+ if(h->cciss_read == CCISS_READ_10) {
+ c->Request.CDB[1] = 0;
+ c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */
+ c->Request.CDB[3] = (start_blk >> 16) & 0xff;
+ c->Request.CDB[4] = (start_blk >> 8) & 0xff;
+ c->Request.CDB[5] = start_blk & 0xff;
+ c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */
+ c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff;
+ c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff;
+ c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
+ } else {
+ u32 upper32 = upper_32_bits(start_blk);
+
+ c->Request.CDBLen = 16;
+ c->Request.CDB[1]= 0;
+ c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */
+ c->Request.CDB[3]= (upper32 >> 16) & 0xff;
+ c->Request.CDB[4]= (upper32 >> 8) & 0xff;
+ c->Request.CDB[5]= upper32 & 0xff;
+ c->Request.CDB[6]= (start_blk >> 24) & 0xff;
+ c->Request.CDB[7]= (start_blk >> 16) & 0xff;
+ c->Request.CDB[8]= (start_blk >> 8) & 0xff;
+ c->Request.CDB[9]= start_blk & 0xff;
+ c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff;
+ c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff;
+ c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff;
+ c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff;
+ c->Request.CDB[14] = c->Request.CDB[15] = 0;
+ }
+ } else if (blk_pc_request(creq)) {
+ c->Request.CDBLen = creq->cmd_len;
+ memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB);
+ } else {
+ printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type);
+ BUG();
+ }
spin_lock_irq(q->queue_lock);
- addQ(&(h->reqQ),c);
+ addQ(&h->reqQ, c);
h->Qdepth++;
- if(h->Qdepth > h->maxQsinceinit)
- h->maxQsinceinit = h->Qdepth;
+ if (h->Qdepth > h->maxQsinceinit)
+ h->maxQsinceinit = h->Qdepth;
goto queue;
full:
startio:
/* We will already have the driver lock here so not need
* to lock it.
- */
+ */
start_io(h);
}
static inline unsigned long get_next_completion(ctlr_info_t *h)
{
-#ifdef CONFIG_CISS_SCSI_TAPE
- /* Any rejects from sendcmd() lying around? Process them first */
- if (h->scsi_rejects.ncompletions == 0)
- return h->access.command_completed(h);
- else {
- struct sendcmd_reject_list *srl;
- int n;
- srl = &h->scsi_rejects;
- n = --srl->ncompletions;
- /* printk("cciss%d: processing saved reject\n", h->ctlr); */
- printk("p");
- return srl->complete[n];
- }
-#else
return h->access.command_completed(h);
-#endif
}
static inline int interrupt_pending(ctlr_info_t *h)
{
-#ifdef CONFIG_CISS_SCSI_TAPE
- return ( h->access.intr_pending(h)
- || (h->scsi_rejects.ncompletions > 0));
-#else
return h->access.intr_pending(h);
-#endif
}
static inline long interrupt_not_for_us(ctlr_info_t *h)
{
-#ifdef CONFIG_CISS_SCSI_TAPE
- return (((h->access.intr_pending(h) == 0) ||
- (h->interrupts_enabled == 0))
- && (h->scsi_rejects.ncompletions == 0));
-#else
- return (((h->access.intr_pending(h) == 0) ||
+ return (((h->access.intr_pending(h) == 0) ||
(h->interrupts_enabled == 0)));
-#endif
}
-static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t do_cciss_intr(int irq, void *dev_id)
{
ctlr_info_t *h = dev_id;
CommandList_struct *c;
unsigned long flags;
__u32 a, a1, a2;
- int j;
- int start_queue = h->next_to_run;
if (interrupt_not_for_us(h))
return IRQ_NONE;
*/
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
while (interrupt_pending(h)) {
- while((a = get_next_completion(h)) != FIFO_EMPTY) {
+ while ((a = get_next_completion(h)) != FIFO_EMPTY) {
a1 = a;
if ((a & 0x04)) {
a2 = (a >> 3);
- if (a2 >= NR_CMDS) {
- printk(KERN_WARNING "cciss: controller cciss%d failed, stopping.\n", h->ctlr);
+ if (a2 >= h->nr_cmds) {
+ printk(KERN_WARNING
+ "cciss: controller cciss%d failed, stopping.\n",
+ h->ctlr);
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
fail_all_cmds(h->ctlr);
return IRQ_HANDLED;
}
a = c->busaddr;
} else {
- a &= ~3;
- if ((c = h->cmpQ) == NULL) {
- printk(KERN_WARNING "cciss: Completion of %08x ignored\n", a1);
- continue;
- }
- while(c->busaddr != a) {
- c = c->next;
- if (c == h->cmpQ)
- break;
- }
+ struct hlist_node *tmp;
+
+ a &= ~3;
+ c = NULL;
+ hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
+ if (c->busaddr == a)
+ 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 && c->busaddr == a) {
+ removeQ(c);
if (c->cmd_type == CMD_RWREQ) {
complete_command(h, c, 0);
} else if (c->cmd_type == CMD_IOCTL_PEND) {
}
}
- /* check to see if we have maxed out the number of commands that can
- * be placed on the queue. If so then exit. We do this check here
- * in case the interrupt we serviced was from an ioctl and did not
- * free any new commands.
- */
- if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
- goto cleanup;
-
- /* We have room on the queue for more commands. Now we need to queue
- * them up. We will also keep track of the next queue to run so
- * that every queue gets a chance to be started first.
- */
- for (j=0; j < h->highest_lun + 1; j++){
- int curr_queue = (start_queue + j) % (h->highest_lun + 1);
- /* make sure the disk has been added and the drive is real
- * because this can be called from the middle of init_one.
- */
- if(!(h->drv[curr_queue].queue) ||
- !(h->drv[curr_queue].heads))
- continue;
- blk_start_queue(h->gendisk[curr_queue]->queue);
-
- /* check to see if we have maxed out the number of commands
- * that can be placed on the queue.
- */
- if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS)
- {
- if (curr_queue == start_queue){
- h->next_to_run = (start_queue + 1) % (h->highest_lun + 1);
- goto cleanup;
- } else {
- h->next_to_run = curr_queue;
- goto cleanup;
- }
- } else {
- curr_queue = (curr_queue + 1) % (h->highest_lun + 1);
- }
- }
-
-cleanup:
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
return IRQ_HANDLED;
}
-/*
- * We cannot read the structure directly, for portablity we must use
+
+/**
+ * add_to_scan_list() - add controller to rescan queue
+ * @h: Pointer to the controller.
+ *
+ * Adds the controller to the rescan queue if not already on the queue.
+ *
+ * returns 1 if added to the queue, 0 if skipped (could be on the
+ * queue already, or the controller could be initializing or shutting
+ * down).
+ **/
+static int add_to_scan_list(struct ctlr_info *h)
+{
+ struct ctlr_info *test_h;
+ int found = 0;
+ int ret = 0;
+
+ if (h->busy_initializing)
+ return 0;
+
+ if (!mutex_trylock(&h->busy_shutting_down))
+ return 0;
+
+ mutex_lock(&scan_mutex);
+ list_for_each_entry(test_h, &scan_q, scan_list) {
+ if (test_h == h) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found && !h->busy_scanning) {
+ INIT_COMPLETION(h->scan_wait);
+ list_add_tail(&h->scan_list, &scan_q);
+ ret = 1;
+ }
+ mutex_unlock(&scan_mutex);
+ mutex_unlock(&h->busy_shutting_down);
+
+ return ret;
+}
+
+/**
+ * remove_from_scan_list() - remove controller from rescan queue
+ * @h: Pointer to the controller.
+ *
+ * Removes the controller from the rescan queue if present. Blocks if
+ * the controller is currently conducting a rescan. The controller
+ * can be in one of three states:
+ * 1. Doesn't need a scan
+ * 2. On the scan list, but not scanning yet (we remove it)
+ * 3. Busy scanning (and not on the list). In this case we want to wait for
+ * the scan to complete to make sure the scanning thread for this
+ * controller is completely idle.
+ **/
+static void remove_from_scan_list(struct ctlr_info *h)
+{
+ struct ctlr_info *test_h, *tmp_h;
+
+ mutex_lock(&scan_mutex);
+ list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) {
+ if (test_h == h) { /* state 2. */
+ list_del(&h->scan_list);
+ complete_all(&h->scan_wait);
+ mutex_unlock(&scan_mutex);
+ return;
+ }
+ }
+ if (h->busy_scanning) { /* state 3. */
+ mutex_unlock(&scan_mutex);
+ wait_for_completion(&h->scan_wait);
+ } else { /* state 1, nothing to do. */
+ mutex_unlock(&scan_mutex);
+ }
+}
+
+/**
+ * scan_thread() - kernel thread used to rescan controllers
+ * @data: Ignored.
+ *
+ * A kernel thread used scan for drive topology changes on
+ * controllers. The thread processes only one controller at a time
+ * using a queue. Controllers are added to the queue using
+ * add_to_scan_list() and removed from the queue either after done
+ * processing or using remove_from_scan_list().
+ *
+ * returns 0.
+ **/
+static int scan_thread(void *data)
+{
+ struct ctlr_info *h;
+
+ while (1) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
+ if (kthread_should_stop())
+ break;
+
+ while (1) {
+ mutex_lock(&scan_mutex);
+ if (list_empty(&scan_q)) {
+ mutex_unlock(&scan_mutex);
+ break;
+ }
+
+ h = list_entry(scan_q.next,
+ struct ctlr_info,
+ scan_list);
+ list_del(&h->scan_list);
+ h->busy_scanning = 1;
+ mutex_unlock(&scan_mutex);
+
+ rebuild_lun_table(h, 0, 0);
+ complete_all(&h->scan_wait);
+ mutex_lock(&scan_mutex);
+ h->busy_scanning = 0;
+ mutex_unlock(&scan_mutex);
+ }
+ }
+
+ return 0;
+}
+
+static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c)
+{
+ if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
+ return 0;
+
+ switch (c->err_info->SenseInfo[12]) {
+ case STATE_CHANGED:
+ printk(KERN_WARNING "cciss%d: a state change "
+ "detected, command retried\n", h->ctlr);
+ return 1;
+ break;
+ case LUN_FAILED:
+ printk(KERN_WARNING "cciss%d: LUN failure "
+ "detected, action required\n", h->ctlr);
+ return 1;
+ break;
+ case REPORT_LUNS_CHANGED:
+ printk(KERN_WARNING "cciss%d: report LUN data "
+ "changed\n", h->ctlr);
+ /*
+ * Here, we could call add_to_scan_list and wake up the scan thread,
+ * except that it's quite likely that we will get more than one
+ * REPORT_LUNS_CHANGED condition in quick succession, which means
+ * that those which occur after the first one will likely happen
+ * *during* the scan_thread's rescan. And the rescan code is not
+ * robust enough to restart in the middle, undoing what it has already
+ * done, and it's not clear that it's even possible to do this, since
+ * part of what it does is notify the block layer, which starts
+ * doing it's own i/o to read partition tables and so on, and the
+ * driver doesn't have visibility to know what might need undoing.
+ * In any event, if possible, it is horribly complicated to get right
+ * so we just don't do it for now.
+ *
+ * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
+ */
+ return 1;
+ break;
+ case POWER_OR_RESET:
+ printk(KERN_WARNING "cciss%d: a power on "
+ "or device reset detected\n", h->ctlr);
+ return 1;
+ break;
+ case UNIT_ATTENTION_CLEARED:
+ printk(KERN_WARNING "cciss%d: unit attention "
+ "cleared by another initiator\n", h->ctlr);
+ return 1;
+ break;
+ default:
+ printk(KERN_WARNING "cciss%d: unknown "
+ "unit attention detected\n", h->ctlr);
+ return 1;
+ }
+}
+
+/*
+ * We cannot read the structure directly, for portability we must use
* the io functions.
- * This is for debug only.
+ * This is for debug only.
*/
#ifdef CCISS_DEBUG
-static void print_cfg_table( CfgTable_struct *tb)
+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++)
+ for (i = 0; i < 4; i++)
temp_name[i] = readb(&(tb->Signature[i]));
- temp_name[4]='\0';
- printk(" Signature = %s\n", temp_name);
+ 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++)
+ printk(" Transport methods supported = 0x%x\n",
+ readl(&(tb->TransportSupport)));
+ printk(" Transport methods active = 0x%x\n",
+ readl(&(tb->TransportActive)));
+ printk(" Requested transport Method = 0x%x\n",
+ readl(&(tb->HostWrite.TransportRequest)));
+ printk(" Coalesce Interrupt Delay = 0x%x\n",
+ readl(&(tb->HostWrite.CoalIntDelay)));
+ printk(" Coalesce Interrupt Count = 0x%x\n",
+ readl(&(tb->HostWrite.CoalIntCount)));
+ printk(" Max outstanding commands = 0x%d\n",
+ readl(&(tb->CmdsOutMax)));
+ printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
+ for (i = 0; i < 16; i++)
temp_name[i] = readb(&(tb->ServerName[i]));
temp_name[16] = '\0';
printk(" Server Name = %s\n", temp_name);
- printk(" Heartbeat Counter = 0x%x\n\n\n",
- readl(&(tb->HeartBeat)));
-}
-#endif /* CCISS_DEBUG */
-
-static 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;
+ printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat)));
}
+#endif /* CCISS_DEBUG */
-static int find_PCI_BAR_index(struct pci_dev *pdev,
- unsigned long pci_bar_addr)
+static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
{
int i, offset, mem_type, bar_type;
- if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
+ if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
return 0;
offset = 0;
- for (i=0; i<DEVICE_COUNT_RESOURCE; i++) {
- bar_type = pci_resource_flags(pdev, i) &
- PCI_BASE_ADDRESS_SPACE;
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
offset += 4;
else {
mem_type = pci_resource_flags(pdev, i) &
- PCI_BASE_ADDRESS_MEM_TYPE_MASK;
+ PCI_BASE_ADDRESS_MEM_TYPE_MASK;
switch (mem_type) {
- case PCI_BASE_ADDRESS_MEM_TYPE_32:
- case PCI_BASE_ADDRESS_MEM_TYPE_1M:
- offset += 4; /* 32 bit */
- break;
- case PCI_BASE_ADDRESS_MEM_TYPE_64:
- offset += 8;
- break;
- default: /* reserved in PCI 2.2 */
- printk(KERN_WARNING "Base address is invalid\n");
- return -1;
+ case PCI_BASE_ADDRESS_MEM_TYPE_32:
+ case PCI_BASE_ADDRESS_MEM_TYPE_1M:
+ offset += 4; /* 32 bit */
+ break;
+ case PCI_BASE_ADDRESS_MEM_TYPE_64:
+ offset += 8;
+ break;
+ default: /* reserved in PCI 2.2 */
+ printk(KERN_WARNING
+ "Base address is invalid\n");
+ return -1;
break;
}
}
- if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
- return i+1;
+ if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
+ return i + 1;
}
return -1;
}
* controllers that are capable. If not, we use IO-APIC mode.
*/
-static void __devinit cciss_interrupt_mode(ctlr_info_t *c, struct pci_dev *pdev, __u32 board_id)
+static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
+ struct pci_dev *pdev, __u32 board_id)
{
#ifdef CONFIG_PCI_MSI
- int err;
- struct msix_entry cciss_msix_entries[4] = {{0,0}, {0,1},
- {0,2}, {0,3}};
+ int err;
+ struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1},
+ {0, 2}, {0, 3}
+ };
/* Some boards advertise MSI but don't really support it */
if ((board_id == 0x40700E11) ||
- (board_id == 0x40800E11) ||
- (board_id == 0x40820E11) ||
- (board_id == 0x40830E11))
+ (board_id == 0x40800E11) ||
+ (board_id == 0x40820E11) || (board_id == 0x40830E11))
goto default_int_mode;
- if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
- err = pci_enable_msix(pdev, cciss_msix_entries, 4);
- if (!err) {
- c->intr[0] = cciss_msix_entries[0].vector;
- c->intr[1] = cciss_msix_entries[1].vector;
- c->intr[2] = cciss_msix_entries[2].vector;
- c->intr[3] = cciss_msix_entries[3].vector;
- c->msix_vector = 1;
- return;
- }
- if (err > 0) {
- printk(KERN_WARNING "cciss: only %d MSI-X vectors "
- "available\n", err);
- } else {
- printk(KERN_WARNING "cciss: MSI-X init failed %d\n",
- err);
- }
- }
- if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
- if (!pci_enable_msi(pdev)) {
- c->intr[SIMPLE_MODE_INT] = pdev->irq;
- c->msi_vector = 1;
- return;
- } else {
- printk(KERN_WARNING "cciss: MSI init failed\n");
- c->intr[SIMPLE_MODE_INT] = pdev->irq;
- return;
- }
- }
-#endif /* CONFIG_PCI_MSI */
- /* if we get here we're going to use the default interrupt mode */
+ if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
+ err = pci_enable_msix(pdev, cciss_msix_entries, 4);
+ if (!err) {
+ c->intr[0] = cciss_msix_entries[0].vector;
+ c->intr[1] = cciss_msix_entries[1].vector;
+ c->intr[2] = cciss_msix_entries[2].vector;
+ c->intr[3] = cciss_msix_entries[3].vector;
+ c->msix_vector = 1;
+ return;
+ }
+ if (err > 0) {
+ printk(KERN_WARNING "cciss: only %d MSI-X vectors "
+ "available\n", err);
+ goto default_int_mode;
+ } else {
+ printk(KERN_WARNING "cciss: MSI-X init failed %d\n",
+ err);
+ goto default_int_mode;
+ }
+ }
+ if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
+ if (!pci_enable_msi(pdev)) {
+ c->msi_vector = 1;
+ } else {
+ printk(KERN_WARNING "cciss: MSI init failed\n");
+ }
+ }
default_int_mode:
- c->intr[SIMPLE_MODE_INT] = pdev->irq;
+#endif /* CONFIG_PCI_MSI */
+ /* if we get here we're going to use the default interrupt mode */
+ c->intr[SIMPLE_MODE_INT] = pdev->irq;
return;
}
-static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
+static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
{
ushort subsystem_vendor_id, subsystem_device_id, command;
__u32 board_id, scratchpad = 0;
__u64 cfg_offset;
__u32 cfg_base_addr;
__u64 cfg_base_addr_index;
- int i;
+ int i, prod_index, err;
+
+ subsystem_vendor_id = pdev->subsystem_vendor;
+ subsystem_device_id = pdev->subsystem_device;
+ board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
+ subsystem_vendor_id);
+
+ for (i = 0; i < ARRAY_SIZE(products); i++) {
+ /* Stand aside for hpsa driver on request */
+ if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY)
+ return -ENODEV;
+ if (board_id == products[i].board_id)
+ break;
+ }
+ prod_index = i;
+ if (prod_index == ARRAY_SIZE(products)) {
+ dev_warn(&pdev->dev,
+ "unrecognized board ID: 0x%08lx, ignoring.\n",
+ (unsigned long) board_id);
+ return -ENODEV;
+ }
/* check to see if controller has been disabled */
/* BEFORE trying to enable it */
- (void) pci_read_config_word(pdev, PCI_COMMAND,&command);
- if(!(command & 0x02))
- {
- printk(KERN_WARNING "cciss: controller appears to be disabled\n");
- return(-1);
+ (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
+ if (!(command & 0x02)) {
+ printk(KERN_WARNING
+ "cciss: controller appears to be disabled\n");
+ return -ENODEV;
}
- if (pci_enable_device(pdev))
- {
+ err = pci_enable_device(pdev);
+ if (err) {
printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
- return( -1);
+ return err;
}
- subsystem_vendor_id = pdev->subsystem_vendor;
- subsystem_device_id = pdev->subsystem_device;
- board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
- subsystem_vendor_id);
-
- /* search for our IO range so we can protect it */
- for(i=0; i<DEVICE_COUNT_RESOURCE; i++)
- {
- /* is this an IO range */
- if( pci_resource_flags(pdev, i) & 0x01 ) {
- c->io_mem_addr = pci_resource_start(pdev, i);
- c->io_mem_length = pci_resource_end(pdev, i) -
- pci_resource_start(pdev, i) +1;
-#ifdef CCISS_DEBUG
- printk("IO value found base_addr[%d] %lx %lx\n", i,
- c->io_mem_addr, c->io_mem_length);
-#endif /* CCISS_DEBUG */
- /* register the IO range */
- if(!request_region( c->io_mem_addr,
- c->io_mem_length, "cciss"))
- {
- printk(KERN_WARNING "cciss 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;
- }
+ err = pci_request_regions(pdev, "cciss");
+ if (err) {
+ printk(KERN_ERR "cciss: Cannot obtain PCI resources, "
+ "aborting\n");
+ return err;
}
#ifdef CCISS_DEBUG
printk("command = %x\n", command);
printk("irq = %x\n", pdev->irq);
printk("board_id = %x\n", board_id);
-#endif /* CCISS_DEBUG */
+#endif /* CCISS_DEBUG */
/* If the kernel supports MSI/MSI-X we will try to enable that functionality,
* else we use the IO-APIC interrupt assigned to us by system ROM.
*/
cciss_interrupt_mode(c, pdev, board_id);
- /*
- * Memory base addr is first addr , the second points to the config
- * table
- */
+ /* find the memory BAR */
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
+ break;
+ }
+ if (i == DEVICE_COUNT_RESOURCE) {
+ printk(KERN_WARNING "cciss: No memory BAR found\n");
+ err = -ENODEV;
+ goto err_out_free_res;
+ }
+
+ c->paddr = pci_resource_start(pdev, i); /* addressing mode bits
+ * already removed
+ */
- c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */
#ifdef CCISS_DEBUG
- printk("address 0 = %x\n", c->paddr);
-#endif /* CCISS_DEBUG */
- c->vaddr = remap_pci_mem(c->paddr, 200);
+ printk("address 0 = %lx\n", c->paddr);
+#endif /* CCISS_DEBUG */
+ c->vaddr = remap_pci_mem(c->paddr, 0x250);
/* Wait for the board to become ready. (PCI hotplug needs this.)
* We poll for up to 120 secs, once per 100ms. */
- for (i=0; i < 1200; i++) {
+ for (i = 0; i < 1200; i++) {
scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET);
if (scratchpad == CCISS_FIRMWARE_READY)
break;
set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ / 10); /* wait 100ms */
+ schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */
}
if (scratchpad != CCISS_FIRMWARE_READY) {
printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
- return -1;
+ err = -ENODEV;
+ goto err_out_free_res;
}
/* get the address index number */
cfg_base_addr &= (__u32) 0x0000ffff;
#ifdef CCISS_DEBUG
printk("cfg base address = %x\n", cfg_base_addr);
-#endif /* CCISS_DEBUG */
- cfg_base_addr_index =
- find_PCI_BAR_index(pdev, cfg_base_addr);
+#endif /* CCISS_DEBUG */
+ cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
#ifdef CCISS_DEBUG
- printk("cfg base address index = %x\n", cfg_base_addr_index);
-#endif /* CCISS_DEBUG */
+ printk("cfg base address index = %llx\n",
+ (unsigned long long)cfg_base_addr_index);
+#endif /* CCISS_DEBUG */
if (cfg_base_addr_index == -1) {
printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n");
- release_io_mem(c);
- return -1;
+ err = -ENODEV;
+ goto err_out_free_res;
}
cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET);
#ifdef CCISS_DEBUG
- printk("cfg offset = %x\n", cfg_offset);
-#endif /* CCISS_DEBUG */
- c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
- cfg_base_addr_index) + cfg_offset,
- sizeof(CfgTable_struct));
+ printk("cfg offset = %llx\n", (unsigned long long)cfg_offset);
+#endif /* CCISS_DEBUG */
+ c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
+ cfg_base_addr_index) +
+ cfg_offset, sizeof(CfgTable_struct));
c->board_id = board_id;
#ifdef CCISS_DEBUG
print_cfg_table(c->cfgtable);
-#endif /* CCISS_DEBUG */
+#endif /* CCISS_DEBUG */
+
+ /* Some controllers support Zero Memory Raid (ZMR).
+ * When configured in ZMR mode the number of supported
+ * commands drops to 64. So instead of just setting an
+ * arbitrary value we make the driver a little smarter.
+ * We read the config table to tell us how many commands
+ * are supported on the controller then subtract 4 to
+ * leave a little room for ioctl calls.
+ */
+ c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
+ c->maxsgentries = readl(&(c->cfgtable->MaxSGElements));
- 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 "cciss: Sorry, I don't know how"
- " to access the Smart Array controller %08lx\n",
- (unsigned long)board_id);
- return -1;
+ /*
+ * Limit native command to 32 s/g elements to save dma'able memory.
+ * Howvever spec says if 0, use 31
+ */
+
+ c->max_cmd_sgentries = 31;
+ if (c->maxsgentries > 512) {
+ c->max_cmd_sgentries = 32;
+ c->chainsize = c->maxsgentries - c->max_cmd_sgentries + 1;
+ c->maxsgentries -= 1; /* account for chain pointer */
+ } else {
+ c->maxsgentries = 31; /* Default to traditional value */
+ c->chainsize = 0; /* traditional */
}
- if ( (readb(&c->cfgtable->Signature[0]) != 'C') ||
- (readb(&c->cfgtable->Signature[1]) != 'I') ||
- (readb(&c->cfgtable->Signature[2]) != 'S') ||
- (readb(&c->cfgtable->Signature[3]) != 'S') )
- {
+
+ c->product_name = products[prod_index].product_name;
+ c->access = *(products[prod_index].access);
+ c->nr_cmds = c->max_commands - 4;
+ if ((readb(&c->cfgtable->Signature[0]) != 'C') ||
+ (readb(&c->cfgtable->Signature[1]) != 'I') ||
+ (readb(&c->cfgtable->Signature[2]) != 'S') ||
+ (readb(&c->cfgtable->Signature[3]) != 'S')) {
printk("Does not appear to be a valid CISS config table\n");
- return -1;
+ err = -ENODEV;
+ goto err_out_free_res;
}
-
#ifdef CONFIG_X86
-{
- /* Need to enable prefetch in the SCSI core for 6400 in x86 */
- __u32 prefetch;
- prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
- prefetch |= 0x100;
- writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
-}
+ {
+ /* Need to enable prefetch in the SCSI core for 6400 in x86 */
+ __u32 prefetch;
+ prefetch = readl(&(c->cfgtable->SCSI_Prefetch));
+ prefetch |= 0x100;
+ writel(prefetch, &(c->cfgtable->SCSI_Prefetch));
+ }
#endif
+ /* Disabling DMA prefetch and refetch for the P600.
+ * An ASIC bug may result in accesses to invalid memory addresses.
+ * We've disabled prefetch for some time now. Testing with XEN
+ * kernels revealed a bug in the refetch if dom0 resides on a P600.
+ */
+ if(board_id == 0x3225103C) {
+ __u32 dma_prefetch;
+ __u32 dma_refetch;
+ dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG);
+ dma_prefetch |= 0x8000;
+ writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG);
+ pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch);
+ dma_refetch |= 0x1;
+ pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch);
+ }
+
#ifdef CCISS_DEBUG
printk("Trying to put board into Simple mode\n");
-#endif /* CCISS_DEBUG */
+#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);
+ /* Update the field, and then ring the doorbell */
+ writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest));
+ writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL);
/* under certain very rare conditions, this can take awhile.
* (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
* as we enter this code.) */
- for(i=0;i<MAX_CONFIG_WAIT;i++) {
+ for (i = 0; i < MAX_CONFIG_WAIT; i++) {
if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq))
break;
/* delay and try again */
set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(10);
- }
+ schedule_timeout(msecs_to_jiffies(1));
+ }
#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL));
-#endif /* 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 */
+ print_cfg_table(c->cfgtable);
+#endif /* CCISS_DEBUG */
- if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
- {
+ if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) {
printk(KERN_WARNING "cciss: unable to get board into"
- " simple mode\n");
- return -1;
+ " simple mode\n");
+ err = -ENODEV;
+ goto err_out_free_res;
}
return 0;
+err_out_free_res:
+ /*
+ * Deliberately omit pci_disable_device(): it does something nasty to
+ * Smart Array controllers that pci_enable_device does not undo
+ */
+ pci_release_regions(pdev);
+ return err;
}
-/*
- * Gets information about the local volumes attached to the controller.
- */
-static void cciss_getgeometry(int cntl_num)
+/* Function to find the first free pointer into our hba[] array
+ * Returns -1 if no free entries are left.
+ */
+static int alloc_cciss_hba(void)
{
- ReportLunData_struct *ld_buff;
- ReadCapdata_struct *size_buff;
- InquiryData_struct *inq_buff;
- int return_code;
int i;
- int listlength = 0;
- __u32 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;
+ for (i = 0; i < MAX_CTLR; i++) {
+ if (!hba[i]) {
+ ctlr_info_t *p;
+
+ p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL);
+ if (!p)
+ goto Enomem;
+ hba[i] = p;
+ return i;
+ }
}
- 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, NULL, TYPE_CMD);
- 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");
+ printk(KERN_WARNING "cciss: This driver supports a maximum"
+ " of %d controllers.\n", MAX_CTLR);
+ return -1;
+Enomem:
+ printk(KERN_ERR "cciss: out of memory.\n");
+ return -1;
+}
+
+static void free_hba(int n)
+{
+ ctlr_info_t *h = hba[n];
+ int i;
+
+ hba[n] = NULL;
+ for (i = 0; i < h->highest_lun + 1; i++)
+ if (h->gendisk[i] != NULL)
+ put_disk(h->gendisk[i]);
+ kfree(h);
+}
+
+/* Send a message CDB to the firmware. */
+static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type)
+{
+ typedef struct {
+ CommandListHeader_struct CommandHeader;
+ RequestBlock_struct Request;
+ ErrDescriptor_struct ErrorDescriptor;
+ } Command;
+ static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct);
+ Command *cmd;
+ dma_addr_t paddr64;
+ uint32_t paddr32, tag;
+ void __iomem *vaddr;
+ int i, err;
+
+ vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+ if (vaddr == NULL)
+ return -ENOMEM;
+
+ /* The Inbound Post Queue only accepts 32-bit physical addresses for the
+ CCISS commands, so they must be allocated from the lower 4GiB of
+ memory. */
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err) {
+ iounmap(vaddr);
+ return -ENOMEM;
}
- /* Get the number of logical volumes */
- return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
- sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);
- 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;
+ cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
+ if (cmd == NULL) {
+ iounmap(vaddr);
+ return -ENOMEM;
}
- 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;
+
+ /* This must fit, because of the 32-bit consistent DMA mask. Also,
+ although there's no guarantee, we assume that the address is at
+ least 4-byte aligned (most likely, it's page-aligned). */
+ paddr32 = paddr64;
+
+ cmd->CommandHeader.ReplyQueue = 0;
+ cmd->CommandHeader.SGList = 0;
+ cmd->CommandHeader.SGTotal = 0;
+ cmd->CommandHeader.Tag.lower = paddr32;
+ cmd->CommandHeader.Tag.upper = 0;
+ memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
+
+ cmd->Request.CDBLen = 16;
+ cmd->Request.Type.Type = TYPE_MSG;
+ cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE;
+ cmd->Request.Type.Direction = XFER_NONE;
+ cmd->Request.Timeout = 0; /* Don't time out */
+ cmd->Request.CDB[0] = opcode;
+ cmd->Request.CDB[1] = type;
+ memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */
+
+ cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command);
+ cmd->ErrorDescriptor.Addr.upper = 0;
+ cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct);
+
+ writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET);
+
+ for (i = 0; i < 10; i++) {
+ tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
+ if ((tag & ~3) == paddr32)
+ break;
+ schedule_timeout_uninterruptible(HZ);
}
-#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 */
-
- hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1;
-// for(i=0; i< hba[cntl_num]->num_luns; i++)
- for(i=0; i < CISS_MAX_LUN; i++)
- {
- if (i < hba[cntl_num]->num_luns){
- 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;
+ iounmap(vaddr);
-#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 */
- cciss_read_capacity(cntl_num, i, size_buff, 0,
- &total_size, &block_size);
- cciss_geometry_inquiry(cntl_num, i, 0, total_size,
- block_size, inq_buff, &hba[cntl_num]->drv[i]);
- } else {
- /* initialize raid_level to indicate a free space */
- hba[cntl_num]->drv[i].raid_level = -1;
- }
+ /* we leak the DMA buffer here ... no choice since the controller could
+ still complete the command. */
+ if (i == 10) {
+ printk(KERN_ERR "cciss: controller message %02x:%02x timed out\n",
+ opcode, type);
+ return -ETIMEDOUT;
}
- kfree(ld_buff);
- kfree(size_buff);
- kfree(inq_buff);
-}
-/* Function to find the first free pointer into our hba[] array */
-/* Returns -1 if no free entries are left. */
-static int alloc_cciss_hba(void)
+ pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
+
+ if (tag & 2) {
+ printk(KERN_ERR "cciss: controller message %02x:%02x failed\n",
+ opcode, type);
+ return -EIO;
+ }
+
+ printk(KERN_INFO "cciss: controller message %02x:%02x succeeded\n",
+ opcode, type);
+ return 0;
+}
+
+#define cciss_soft_reset_controller(p) cciss_message(p, 1, 0)
+#define cciss_noop(p) cciss_message(p, 3, 0)
+
+static __devinit int cciss_reset_msi(struct pci_dev *pdev)
{
- struct gendisk *disk[NWD];
- int i, n;
- for (n = 0; n < NWD; n++) {
- disk[n] = alloc_disk(1 << NWD_SHIFT);
- if (!disk[n])
- goto out;
+/* the #defines are stolen from drivers/pci/msi.h. */
+#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
+#define PCI_MSIX_FLAGS_ENABLE (1 << 15)
+
+ int pos;
+ u16 control = 0;
+
+ pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
+ if (pos) {
+ pci_read_config_word(pdev, msi_control_reg(pos), &control);
+ if (control & PCI_MSI_FLAGS_ENABLE) {
+ printk(KERN_INFO "cciss: resetting MSI\n");
+ pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE);
+ }
}
- for(i=0; i< MAX_CTLR; i++) {
- if (!hba[i]) {
- ctlr_info_t *p;
- p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL);
- if (!p)
- goto Enomem;
- memset(p, 0, sizeof(ctlr_info_t));
- for (n = 0; n < NWD; n++)
- p->gendisk[n] = disk[n];
- hba[i] = p;
- return i;
+ pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
+ if (pos) {
+ pci_read_config_word(pdev, msi_control_reg(pos), &control);
+ if (control & PCI_MSIX_FLAGS_ENABLE) {
+ printk(KERN_INFO "cciss: resetting MSI-X\n");
+ pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE);
}
}
- printk(KERN_WARNING "cciss: This driver supports a maximum"
- " of %d controllers.\n", MAX_CTLR);
- goto out;
-Enomem:
- printk(KERN_ERR "cciss: out of memory.\n");
-out:
- while (n--)
- put_disk(disk[n]);
- return -1;
+
+ return 0;
}
-static void free_hba(int i)
+/* This does a hard reset of the controller using PCI power management
+ * states. */
+static __devinit int cciss_hard_reset_controller(struct pci_dev *pdev)
{
- ctlr_info_t *p = hba[i];
- int n;
+ u16 pmcsr, saved_config_space[32];
+ int i, pos;
+
+ printk(KERN_INFO "cciss: using PCI PM to reset controller\n");
+
+ /* This is very nearly the same thing as
+
+ pci_save_state(pci_dev);
+ pci_set_power_state(pci_dev, PCI_D3hot);
+ pci_set_power_state(pci_dev, PCI_D0);
+ pci_restore_state(pci_dev);
+
+ but we can't use these nice canned kernel routines on
+ kexec, because they also check the MSI/MSI-X state in PCI
+ configuration space and do the wrong thing when it is
+ set/cleared. Also, the pci_save/restore_state functions
+ violate the ordering requirements for restoring the
+ configuration space from the CCISS document (see the
+ comment below). So we roll our own .... */
+
+ for (i = 0; i < 32; i++)
+ pci_read_config_word(pdev, 2*i, &saved_config_space[i]);
+
+ pos = pci_find_capability(pdev, PCI_CAP_ID_PM);
+ if (pos == 0) {
+ printk(KERN_ERR "cciss_reset_controller: PCI PM not supported\n");
+ return -ENODEV;
+ }
+
+ /* Quoting from the Open CISS Specification: "The Power
+ * Management Control/Status Register (CSR) controls the power
+ * state of the device. The normal operating state is D0,
+ * CSR=00h. The software off state is D3, CSR=03h. To reset
+ * the controller, place the interface device in D3 then to
+ * D0, this causes a secondary PCI reset which will reset the
+ * controller." */
+
+ /* enter the D3hot power management state */
+ pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr);
+ pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
+ pmcsr |= PCI_D3hot;
+ pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
+
+ schedule_timeout_uninterruptible(HZ >> 1);
+
+ /* enter the D0 power management state */
+ pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
+ pmcsr |= PCI_D0;
+ pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr);
+
+ schedule_timeout_uninterruptible(HZ >> 1);
+
+ /* Restore the PCI configuration space. The Open CISS
+ * Specification says, "Restore the PCI Configuration
+ * Registers, offsets 00h through 60h. It is important to
+ * restore the command register, 16-bits at offset 04h,
+ * last. Do not restore the configuration status register,
+ * 16-bits at offset 06h." Note that the offset is 2*i. */
+ for (i = 0; i < 32; i++) {
+ if (i == 2 || i == 3)
+ continue;
+ pci_write_config_word(pdev, 2*i, saved_config_space[i]);
+ }
+ wmb();
+ pci_write_config_word(pdev, 4, saved_config_space[2]);
- hba[i] = NULL;
- for (n = 0; n < NWD; n++)
- put_disk(p->gendisk[n]);
- kfree(p);
+ return 0;
}
/*
* returns the number of block devices registered.
*/
static int __devinit cciss_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
+ const struct pci_device_id *ent)
{
- request_queue_t *q;
int i;
- int j;
+ int j = 0;
+ int k = 0;
int rc;
+ int dac, return_code;
+ InquiryData_struct *inq_buff;
+
+ if (reset_devices) {
+ /* Reset the controller with a PCI power-cycle */
+ if (cciss_hard_reset_controller(pdev) || cciss_reset_msi(pdev))
+ return -ENODEV;
+
+ /* Now try to get the controller to respond to a no-op. Some
+ devices (notably the HP Smart Array 5i Controller) need
+ up to 30 seconds to respond. */
+ for (i=0; i<30; i++) {
+ if (cciss_noop(pdev) == 0)
+ break;
+
+ schedule_timeout_uninterruptible(HZ);
+ }
+ if (i == 30) {
+ printk(KERN_ERR "cciss: controller seems dead\n");
+ return -EBUSY;
+ }
+ }
- printk(KERN_DEBUG "cciss: 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_cciss_hba();
- if(i < 0)
- return (-1);
+ if (i < 0)
+ return -1;
hba[i]->busy_initializing = 1;
+ INIT_HLIST_HEAD(&hba[i]->cmpQ);
+ INIT_HLIST_HEAD(&hba[i]->reqQ);
+ mutex_init(&hba[i]->busy_shutting_down);
if (cciss_pci_init(hba[i], pdev) != 0)
- goto clean1;
+ goto clean_no_release_regions;
sprintf(hba[i]->devname, "cciss%d", i);
hba[i]->ctlr = i;
hba[i]->pdev = pdev;
+ init_completion(&hba[i]->scan_wait);
+
+ if (cciss_create_hba_sysfs_entry(hba[i]))
+ goto clean0;
+
/* configure PCI DMA stuff */
- if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
- printk("cciss: using DAC cycles\n");
- else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
- printk("cciss: not using DAC cycles\n");
+ if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
+ dac = 1;
+ else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
+ dac = 0;
else {
- printk("cciss: no suitable DMA available\n");
+ printk(KERN_ERR "cciss: no suitable DMA available\n");
goto clean1;
}
if (i < MAX_CTLR_ORIG)
hba[i]->major = COMPAQ_CISS_MAJOR + i;
rc = register_blkdev(hba[i]->major, hba[i]->devname);
- if(rc == -EBUSY || rc == -EINVAL) {
+ if (rc == -EBUSY || rc == -EINVAL) {
printk(KERN_ERR
- "cciss: Unable to get major number %d for %s "
- "on hba %d\n", hba[i]->major, hba[i]->devname, i);
+ "cciss: Unable to get major number %d for %s "
+ "on hba %d\n", hba[i]->major, hba[i]->devname, i);
goto clean1;
- }
- else {
+ } else {
if (i >= MAX_CTLR_ORIG)
hba[i]->major = rc;
}
/* make sure the board interrupts are off */
hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF);
- if( request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr,
- SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM,
- hba[i]->devname, hba[i])) {
+ if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr,
+ IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) {
printk(KERN_ERR "cciss: Unable to get irq %d for %s\n",
- hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname);
+ hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname);
goto clean2;
}
- hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL);
- hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent(
- hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
- &(hba[i]->cmd_pool_dhandle));
- hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent(
- hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
- &(hba[i]->errinfo_pool_dhandle));
- if((hba[i]->cmd_pool_bits == NULL)
- || (hba[i]->cmd_pool == NULL)
- || (hba[i]->errinfo_pool == NULL)) {
- printk( KERN_ERR "cciss: out of memory");
+
+ printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n",
+ hba[i]->devname, pdev->device, pci_name(pdev),
+ hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not");
+
+ hba[i]->cmd_pool_bits =
+ kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG)
+ * sizeof(unsigned long), GFP_KERNEL);
+ hba[i]->cmd_pool = (CommandList_struct *)
+ pci_alloc_consistent(hba[i]->pdev,
+ hba[i]->nr_cmds * sizeof(CommandList_struct),
+ &(hba[i]->cmd_pool_dhandle));
+ hba[i]->errinfo_pool = (ErrorInfo_struct *)
+ pci_alloc_consistent(hba[i]->pdev,
+ hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
+ &(hba[i]->errinfo_pool_dhandle));
+ if ((hba[i]->cmd_pool_bits == NULL)
+ || (hba[i]->cmd_pool == NULL)
+ || (hba[i]->errinfo_pool == NULL)) {
+ printk(KERN_ERR "cciss: out of memory");
goto clean4;
}
-#ifdef CONFIG_CISS_SCSI_TAPE
- hba[i]->scsi_rejects.complete =
- kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) *
- (NR_CMDS + 5), GFP_KERNEL);
- if (hba[i]->scsi_rejects.complete == NULL) {
- printk( KERN_ERR "cciss: out of memory");
- goto clean4;
+
+ /* Need space for temp scatter list */
+ hba[i]->scatter_list = kmalloc(hba[i]->max_commands *
+ sizeof(struct scatterlist *),
+ GFP_KERNEL);
+ for (k = 0; k < hba[i]->nr_cmds; k++) {
+ hba[i]->scatter_list[k] = kmalloc(sizeof(struct scatterlist) *
+ hba[i]->maxsgentries,
+ GFP_KERNEL);
+ if (hba[i]->scatter_list[k] == NULL) {
+ printk(KERN_ERR "cciss%d: could not allocate "
+ "s/g lists\n", i);
+ goto clean4;
+ }
}
-#endif
+ hba[i]->cmd_sg_list = cciss_allocate_sg_chain_blocks(hba[i],
+ hba[i]->chainsize, hba[i]->nr_cmds);
+ if (!hba[i]->cmd_sg_list && hba[i]->chainsize > 0)
+ goto clean4;
+
spin_lock_init(&hba[i]->lock);
- /* Initialize the pdev driver private data.
- have it point to hba[i]. */
+ /* Initialize the pdev driver private data.
+ have it point to hba[i]. */
pci_set_drvdata(pdev, hba[i]);
- /* command and error info recs zeroed out before
- they are used */
- memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
-
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i);
-#endif /* CCISS_DEBUG */
-
- cciss_getgeometry(i);
+ /* command and error info recs zeroed out before
+ they are used */
+ memset(hba[i]->cmd_pool_bits, 0,
+ DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG)
+ * sizeof(unsigned long));
+
+ hba[i]->num_luns = 0;
+ hba[i]->highest_lun = -1;
+ for (j = 0; j < CISS_MAX_LUN; j++) {
+ hba[i]->drv[j] = NULL;
+ hba[i]->gendisk[j] = NULL;
+ }
cciss_scsi_setup(i);
/* Turn the interrupts on so we can service requests */
hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON);
- cciss_procinit(i);
- hba[i]->busy_initializing = 0;
-
- for(j=0; j < NWD; j++) { /* mfm */
- drive_info_struct *drv = &(hba[i]->drv[j]);
- struct gendisk *disk = hba[i]->gendisk[j];
-
- q = blk_init_queue(do_cciss_request, &hba[i]->lock);
- if (!q) {
- printk(KERN_ERR
- "cciss: unable to allocate queue for disk %d\n",
- j);
- break;
- }
- drv->queue = q;
-
- q->backing_dev_info.ra_pages = READ_AHEAD;
- blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask);
-
- /* This is a hardware imposed limit. */
- blk_queue_max_hw_segments(q, MAXSGENTRIES);
-
- /* This is a limit in the driver and could be eliminated. */
- blk_queue_max_phys_segments(q, MAXSGENTRIES);
+ /* Get the firmware version */
+ inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
+ if (inq_buff == NULL) {
+ printk(KERN_ERR "cciss: out of memory\n");
+ goto clean4;
+ }
- blk_queue_max_sectors(q, 512);
+ return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff,
+ sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD);
+ if (return_code == IO_OK) {
+ hba[i]->firm_ver[0] = inq_buff->data_byte[32];
+ hba[i]->firm_ver[1] = inq_buff->data_byte[33];
+ hba[i]->firm_ver[2] = inq_buff->data_byte[34];
+ hba[i]->firm_ver[3] = inq_buff->data_byte[35];
+ } else { /* send command failed */
+ printk(KERN_WARNING "cciss: unable to determine firmware"
+ " version of controller\n");
+ }
+ kfree(inq_buff);
- blk_queue_softirq_done(q, cciss_softirq_done);
+ cciss_procinit(i);
- q->queuedata = hba[i];
- sprintf(disk->disk_name, "cciss/c%dd%d", i, j);
- sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j);
- disk->major = hba[i]->major;
- disk->first_minor = j << NWD_SHIFT;
- disk->fops = &cciss_fops;
- disk->queue = q;
- disk->private_data = drv;
- /* we must register the controller even if no disks exist */
- /* this is for the online array utilities */
- if(!drv->heads && j)
- continue;
- blk_queue_hardsect_size(q, drv->block_size);
- set_capacity(disk, drv->nr_blocks);
- add_disk(disk);
- }
+ hba[i]->cciss_max_sectors = 8192;
- return(1);
+ rebuild_lun_table(hba[i], 1, 0);
+ hba[i]->busy_initializing = 0;
+ return 1;
clean4:
-#ifdef CONFIG_CISS_SCSI_TAPE
- kfree(hba[i]->scsi_rejects.complete);
-#endif
kfree(hba[i]->cmd_pool_bits);
- if(hba[i]->cmd_pool)
+ /* Free up sg elements */
+ for (k = 0; k < hba[i]->nr_cmds; k++)
+ kfree(hba[i]->scatter_list[k]);
+ kfree(hba[i]->scatter_list);
+ cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds);
+ if (hba[i]->cmd_pool)
pci_free_consistent(hba[i]->pdev,
- NR_CMDS * sizeof(CommandList_struct),
- hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
- if(hba[i]->errinfo_pool)
+ hba[i]->nr_cmds * sizeof(CommandList_struct),
+ hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
+ if (hba[i]->errinfo_pool)
pci_free_consistent(hba[i]->pdev,
- NR_CMDS * sizeof( ErrorInfo_struct),
- hba[i]->errinfo_pool,
- hba[i]->errinfo_pool_dhandle);
+ hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
+ hba[i]->errinfo_pool,
+ hba[i]->errinfo_pool_dhandle);
free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]);
clean2:
unregister_blkdev(hba[i]->major, hba[i]->devname);
clean1:
- release_io_mem(hba[i]);
- free_hba(i);
+ cciss_destroy_hba_sysfs_entry(hba[i]);
+clean0:
+ pci_release_regions(pdev);
+clean_no_release_regions:
hba[i]->busy_initializing = 0;
- return(-1);
+
+ /*
+ * Deliberately omit pci_disable_device(): it does something nasty to
+ * Smart Array controllers that pci_enable_device does not undo
+ */
+ pci_set_drvdata(pdev, NULL);
+ free_hba(i);
+ return -1;
+}
+
+static void cciss_shutdown(struct pci_dev *pdev)
+{
+ ctlr_info_t *h;
+ char *flush_buf;
+ int return_code;
+
+ h = pci_get_drvdata(pdev);
+ flush_buf = kzalloc(4, GFP_KERNEL);
+ if (!flush_buf) {
+ printk(KERN_WARNING
+ "cciss:%d cache not flushed, out of memory.\n",
+ h->ctlr);
+ return;
+ }
+ /* write all data in the battery backed cache to disk */
+ memset(flush_buf, 0, 4);
+ return_code = sendcmd_withirq(CCISS_CACHE_FLUSH, h->ctlr, flush_buf,
+ 4, 0, CTLR_LUNID, TYPE_CMD);
+ kfree(flush_buf);
+ if (return_code != IO_OK)
+ printk(KERN_WARNING "cciss%d: Error flushing cache\n",
+ h->ctlr);
+ h->access.set_intr_mask(h, CCISS_INTR_OFF);
+ free_irq(h->intr[2], h);
}
-static void __devexit cciss_remove_one (struct pci_dev *pdev)
+static void __devexit cciss_remove_one(struct pci_dev *pdev)
{
ctlr_info_t *tmp_ptr;
int i, j;
- char flush_buf[4];
- int return_code;
- if (pci_get_drvdata(pdev) == NULL)
- {
- printk( KERN_ERR "cciss: Unable to remove device \n");
+ if (pci_get_drvdata(pdev) == NULL) {
+ printk(KERN_ERR "cciss: Unable to remove device \n");
return;
}
+
tmp_ptr = pci_get_drvdata(pdev);
i = tmp_ptr->ctlr;
- if (hba[i] == NULL)
- {
+ if (hba[i] == NULL) {
printk(KERN_ERR "cciss: device appears to "
- "already be removed \n");
+ "already be removed \n");
return;
}
- /* Turn board interrupts off and send the flush cache command */
- /* sendcmd will turn off interrupt, and send the flush...
- * To write all data in the battery backed cache to disks */
- memset(flush_buf, 0, 4);
- return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
- TYPE_CMD);
- if(return_code != IO_OK)
- {
- printk(KERN_WARNING "Error Flushing cache on controller %d\n",
- i);
- }
- free_irq(hba[i]->intr[2], hba[i]);
-#ifdef CONFIG_PCI_MSI
- if (hba[i]->msix_vector)
- pci_disable_msix(hba[i]->pdev);
- else if (hba[i]->msi_vector)
- pci_disable_msi(hba[i]->pdev);
-#endif /* CONFIG_PCI_MSI */
+ mutex_lock(&hba[i]->busy_shutting_down);
- pci_set_drvdata(pdev, NULL);
- iounmap(hba[i]->vaddr);
- cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
+ remove_from_scan_list(hba[i]);
+ remove_proc_entry(hba[i]->devname, proc_cciss);
unregister_blkdev(hba[i]->major, hba[i]->devname);
- remove_proc_entry(hba[i]->devname, proc_cciss);
-
+
/* remove it from the disk list */
- for (j = 0; j < NWD; j++) {
+ for (j = 0; j < CISS_MAX_LUN; j++) {
struct gendisk *disk = hba[i]->gendisk[j];
if (disk) {
- request_queue_t *q = disk->queue;
+ struct request_queue *q = disk->queue;
- if (disk->flags & GENHD_FL_UP)
+ if (disk->flags & GENHD_FL_UP) {
+ cciss_destroy_ld_sysfs_entry(hba[i], j, 1);
del_gendisk(disk);
+ }
if (q)
blk_cleanup_queue(q);
}
}
- pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct),
- hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
- pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct),
- hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
- kfree(hba[i]->cmd_pool_bits);
#ifdef CONFIG_CISS_SCSI_TAPE
- kfree(hba[i]->scsi_rejects.complete);
+ cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
#endif
- release_io_mem(hba[i]);
+
+ cciss_shutdown(pdev);
+
+#ifdef CONFIG_PCI_MSI
+ if (hba[i]->msix_vector)
+ pci_disable_msix(hba[i]->pdev);
+ else if (hba[i]->msi_vector)
+ pci_disable_msi(hba[i]->pdev);
+#endif /* CONFIG_PCI_MSI */
+
+ iounmap(hba[i]->vaddr);
+
+ pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct),
+ hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
+ pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
+ hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
+ kfree(hba[i]->cmd_pool_bits);
+ /* Free up sg elements */
+ for (j = 0; j < hba[i]->nr_cmds; j++)
+ kfree(hba[i]->scatter_list[j]);
+ kfree(hba[i]->scatter_list);
+ cciss_free_sg_chain_blocks(hba[i]->cmd_sg_list, hba[i]->nr_cmds);
+ /*
+ * Deliberately omit pci_disable_device(): it does something nasty to
+ * Smart Array controllers that pci_enable_device does not undo
+ */
+ pci_release_regions(pdev);
+ pci_set_drvdata(pdev, NULL);
+ cciss_destroy_hba_sysfs_entry(hba[i]);
+ mutex_unlock(&hba[i]->busy_shutting_down);
free_hba(i);
-}
+}
static struct pci_driver cciss_pci_driver = {
- .name = "cciss",
- .probe = cciss_init_one,
- .remove = __devexit_p(cciss_remove_one),
- .id_table = cciss_pci_device_id, /* id_table */
+ .name = "cciss",
+ .probe = cciss_init_one,
+ .remove = __devexit_p(cciss_remove_one),
+ .id_table = cciss_pci_device_id, /* id_table */
+ .shutdown = cciss_shutdown,
};
/*
* This is it. Register the PCI driver information for the cards we control
- * the OS will call our registered routines when it finds one of our cards.
+ * the OS will call our registered routines when it finds one of our cards.
*/
static int __init cciss_init(void)
{
+ int err;
+
+ /*
+ * The hardware requires that commands are aligned on a 64-bit
+ * boundary. Given that we use pci_alloc_consistent() to allocate an
+ * array of them, the size must be a multiple of 8 bytes.
+ */
+ BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT);
+
printk(KERN_INFO DRIVER_NAME "\n");
+ err = bus_register(&cciss_bus_type);
+ if (err)
+ return err;
+
+ /* Start the scan thread */
+ cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan");
+ if (IS_ERR(cciss_scan_thread)) {
+ err = PTR_ERR(cciss_scan_thread);
+ goto err_bus_unregister;
+ }
+
/* Register for our PCI devices */
- return pci_register_driver(&cciss_pci_driver);
+ err = pci_register_driver(&cciss_pci_driver);
+ if (err)
+ goto err_thread_stop;
+
+ return err;
+
+err_thread_stop:
+ kthread_stop(cciss_scan_thread);
+err_bus_unregister:
+ bus_unregister(&cciss_bus_type);
+
+ return err;
}
static void __exit cciss_cleanup(void)
pci_unregister_driver(&cciss_pci_driver);
/* double check that all controller entrys have been removed */
- for (i=0; i< MAX_CTLR; i++)
- {
- if (hba[i] != NULL)
- {
+ for (i = 0; i < MAX_CTLR; i++) {
+ if (hba[i] != NULL) {
printk(KERN_WARNING "cciss: had to remove"
- " controller %d\n", i);
+ " controller %d\n", i);
cciss_remove_one(hba[i]->pdev);
}
}
- remove_proc_entry("cciss", proc_root_driver);
+ kthread_stop(cciss_scan_thread);
+ remove_proc_entry("driver/cciss", NULL);
+ bus_unregister(&cciss_bus_type);
}
static void fail_all_cmds(unsigned long ctlr)
unsigned long flags;
printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr);
- h->alive = 0; /* the controller apparently died... */
+ h->alive = 0; /* the controller apparently died... */
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- pci_disable_device(h->pdev); /* Make sure it is really dead. */
+ pci_disable_device(h->pdev); /* Make sure it is really dead. */
/* move everything off the request queue onto the completed queue */
- while( (c = h->reqQ) != NULL ) {
- removeQ(&(h->reqQ), c);
+ while (!hlist_empty(&h->reqQ)) {
+ c = hlist_entry(h->reqQ.first, CommandList_struct, list);
+ removeQ(c);
h->Qdepth--;
- addQ (&(h->cmpQ), c);
+ addQ(&h->cmpQ, c);
}
/* Now, fail everything on the completed queue with a HW error */
- while( (c = h->cmpQ) != NULL ) {
- removeQ(&h->cmpQ, c);
- c->err_info->CommandStatus = CMD_HARDWARE_ERR;
+ while (!hlist_empty(&h->cmpQ)) {
+ c = hlist_entry(h->cmpQ.first, CommandList_struct, list);
+ removeQ(c);
+ if (c->cmd_type != CMD_MSG_STALE)
+ c->err_info->CommandStatus = CMD_HARDWARE_ERR;
if (c->cmd_type == CMD_RWREQ) {
complete_command(h, c, 0);
} else if (c->cmd_type == CMD_IOCTL_PEND)
complete(c->waiting);
#ifdef CONFIG_CISS_SCSI_TAPE
- else if (c->cmd_type == CMD_SCSI)
- complete_scsi_command(c, 0, 0);
+ else if (c->cmd_type == CMD_SCSI)
+ complete_scsi_command(c, 0, 0);
#endif
}
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff