Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 2 | * Disk Array driver for HP Smart Array controllers. |
| 3 | * (C) Copyright 2000, 2007 Hewlett-Packard Development Company, L.P. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 7 | * the Free Software Foundation; version 2 of the License. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 11 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
Mike Miller | bd4f36d | 2007-10-24 10:30:34 +0200 | [diff] [blame] | 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 17 | * 02111-1307, USA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | * |
| 19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com |
| 20 | * |
| 21 | */ |
| 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/module.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/pci.h> |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/major.h> |
| 31 | #include <linux/fs.h> |
| 32 | #include <linux/bio.h> |
| 33 | #include <linux/blkpg.h> |
| 34 | #include <linux/timer.h> |
| 35 | #include <linux/proc_fs.h> |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 36 | #include <linux/seq_file.h> |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 37 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/hdreg.h> |
| 39 | #include <linux/spinlock.h> |
| 40 | #include <linux/compat.h> |
Jens Axboe | 2056a78 | 2006-03-23 20:00:26 +0100 | [diff] [blame] | 41 | #include <linux/blktrace_api.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <asm/uaccess.h> |
| 43 | #include <asm/io.h> |
| 44 | |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 45 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <linux/blkdev.h> |
| 47 | #include <linux/genhd.h> |
| 48 | #include <linux/completion.h> |
Stephen Cameron | d5d3b73 | 2007-05-08 00:30:02 -0700 | [diff] [blame] | 49 | #include <scsi/scsi.h> |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 50 | #include <scsi/sg.h> |
| 51 | #include <scsi/scsi_ioctl.h> |
| 52 | #include <linux/cdrom.h> |
Mike Pagano | 231bc2a | 2008-04-10 21:29:26 -0700 | [diff] [blame] | 53 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
| 55 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 56 | #define DRIVER_NAME "HP CISS Driver (v 3.6.20)" |
| 57 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 20) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | /* Embedded module documentation macros - see modules.h */ |
| 60 | MODULE_AUTHOR("Hewlett-Packard Company"); |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 61 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 63 | " SA6i P600 P800 P400 P400i E200 E200i E500 P700m" |
| 64 | " Smart Array G2 Series SAS/SATA Controllers"); |
| 65 | MODULE_VERSION("3.6.20"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | MODULE_LICENSE("GPL"); |
| 67 | |
| 68 | #include "cciss_cmd.h" |
| 69 | #include "cciss.h" |
| 70 | #include <linux/cciss_ioctl.h> |
| 71 | |
| 72 | /* define the PCI info for the cards we can control */ |
| 73 | static const struct pci_device_id cciss_pci_device_id[] = { |
Bjorn Helgaas | f82ccdb | 2006-06-25 05:49:07 -0700 | [diff] [blame] | 74 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
| 75 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, |
| 76 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, |
| 77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, |
| 78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, |
| 79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, |
| 80 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, |
| 81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, |
| 82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, |
| 83 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, |
| 84 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, |
| 85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, |
| 86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, |
| 87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, |
| 88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, |
| 89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, |
| 90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, |
| 91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, |
Mike Miller | de92391 | 2006-12-06 20:35:03 -0800 | [diff] [blame] | 92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3237}, |
Mike Miller (OS Dev | 9cff3b3 | 2007-06-19 20:52:18 +0200 | [diff] [blame] | 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 94 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241}, |
| 95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243}, |
| 96 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245}, |
| 97 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247}, |
| 98 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame^] | 99 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A}, |
| 100 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B}, |
Mike Miller | 4ff9a9a | 2006-12-06 20:35:00 -0800 | [diff] [blame] | 101 | {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, |
| 102 | PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | {0,} |
| 104 | }; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
| 107 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | /* board_id = Subsystem Device ID & Vendor ID |
| 109 | * product = Marketing Name for the board |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 110 | * access = Address of the struct of function pointers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | */ |
| 112 | static struct board_type products[] = { |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 113 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
| 114 | {0x40800E11, "Smart Array 5i", &SA5B_access}, |
| 115 | {0x40820E11, "Smart Array 532", &SA5B_access}, |
| 116 | {0x40830E11, "Smart Array 5312", &SA5B_access}, |
| 117 | {0x409A0E11, "Smart Array 641", &SA5_access}, |
| 118 | {0x409B0E11, "Smart Array 642", &SA5_access}, |
| 119 | {0x409C0E11, "Smart Array 6400", &SA5_access}, |
| 120 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, |
| 121 | {0x40910E11, "Smart Array 6i", &SA5_access}, |
| 122 | {0x3225103C, "Smart Array P600", &SA5_access}, |
| 123 | {0x3223103C, "Smart Array P800", &SA5_access}, |
| 124 | {0x3234103C, "Smart Array P400", &SA5_access}, |
| 125 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
| 126 | {0x3211103C, "Smart Array E200i", &SA5_access}, |
| 127 | {0x3212103C, "Smart Array E200", &SA5_access}, |
| 128 | {0x3213103C, "Smart Array E200i", &SA5_access}, |
| 129 | {0x3214103C, "Smart Array E200i", &SA5_access}, |
| 130 | {0x3215103C, "Smart Array E200i", &SA5_access}, |
| 131 | {0x3237103C, "Smart Array E500", &SA5_access}, |
| 132 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
| 133 | {0x3241103C, "Smart Array P212", &SA5_access}, |
| 134 | {0x3243103C, "Smart Array P410", &SA5_access}, |
| 135 | {0x3245103C, "Smart Array P410i", &SA5_access}, |
| 136 | {0x3247103C, "Smart Array P411", &SA5_access}, |
| 137 | {0x3249103C, "Smart Array P812", &SA5_access}, |
Mike Miller | 77ca728 | 2008-11-06 12:53:14 -0800 | [diff] [blame^] | 138 | {0x324A103C, "Smart Array P712m", &SA5_access}, |
| 139 | {0x324B103C, "Smart Array P711m", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 140 | {0xFFFF103C, "Unknown Smart Array", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | }; |
| 142 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 143 | /* How long to wait (in milliseconds) for board to go into simple mode */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 144 | #define MAX_CONFIG_WAIT 30000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 146 | |
| 147 | /*define how many times we will try a command because of bus resets */ |
| 148 | #define MAX_CMD_RETRIES 3 |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | #define MAX_CTLR 32 |
| 151 | |
| 152 | /* Originally cciss driver only supports 8 major numbers */ |
| 153 | #define MAX_CTLR_ORIG 8 |
| 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | static ctlr_info_t *hba[MAX_CTLR]; |
| 156 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 157 | static void do_cciss_request(struct request_queue *q); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 158 | static irqreturn_t do_cciss_intr(int irq, void *dev_id); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 159 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
| 160 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
| 161 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 162 | unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 163 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | static int cciss_revalidate(struct gendisk *disk); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 166 | static int rebuild_lun_table(ctlr_info_t *h, int first_time); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 167 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
| 168 | int clear_all); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 170 | static void cciss_read_capacity(int ctlr, int logvol, int withirq, |
| 171 | sector_t *total_size, unsigned int *block_size); |
| 172 | static void cciss_read_capacity_16(int ctlr, int logvol, int withirq, |
| 173 | sector_t *total_size, unsigned int *block_size); |
| 174 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
| 175 | int withirq, sector_t total_size, |
| 176 | unsigned int block_size, InquiryData_struct *inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 177 | drive_info_struct *drv); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 178 | static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *, |
| 179 | __u32); |
| 180 | static void start_io(ctlr_info_t *h); |
| 181 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, |
| 182 | unsigned int use_unit_num, unsigned int log_unit, |
| 183 | __u8 page_code, unsigned char *scsi3addr, int cmd_type); |
| 184 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
| 185 | unsigned int use_unit_num, unsigned int log_unit, |
| 186 | __u8 page_code, int cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 188 | static void fail_all_cmds(unsigned long ctlr); |
| 189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | static void cciss_procinit(int i); |
| 192 | #else |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 193 | static void cciss_procinit(int i) |
| 194 | { |
| 195 | } |
| 196 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
| 198 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 199 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
| 200 | unsigned, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | #endif |
| 202 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 203 | static struct block_device_operations cciss_fops = { |
| 204 | .owner = THIS_MODULE, |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 205 | .open = cciss_open, |
| 206 | .release = cciss_release, |
| 207 | .locked_ioctl = cciss_ioctl, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 208 | .getgeo = cciss_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 210 | .compat_ioctl = cciss_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 212 | .revalidate_disk = cciss_revalidate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | }; |
| 214 | |
| 215 | /* |
| 216 | * Enqueuing and dequeuing functions for cmdlists. |
| 217 | */ |
| 218 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) |
| 219 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 220 | if (*Qptr == NULL) { |
| 221 | *Qptr = c; |
| 222 | c->next = c->prev = c; |
| 223 | } else { |
| 224 | c->prev = (*Qptr)->prev; |
| 225 | c->next = (*Qptr); |
| 226 | (*Qptr)->prev->next = c; |
| 227 | (*Qptr)->prev = c; |
| 228 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | } |
| 230 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 231 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, |
| 232 | CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 234 | if (c && c->next != c) { |
| 235 | if (*Qptr == c) |
| 236 | *Qptr = c->next; |
| 237 | c->prev->next = c->next; |
| 238 | c->next->prev = c->prev; |
| 239 | } else { |
| 240 | *Qptr = NULL; |
| 241 | } |
| 242 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 246 | |
Randy Dunlap | 0f5486e | 2006-12-29 16:48:31 -0800 | [diff] [blame] | 247 | #define RAID_UNKNOWN 6 |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | #ifdef CONFIG_PROC_FS |
| 250 | |
| 251 | /* |
| 252 | * Report information about this controller. |
| 253 | */ |
| 254 | #define ENG_GIG 1000000000 |
| 255 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 256 | #define ENGAGE_SCSI "engage scsi" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 257 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 258 | "UNKNOWN" |
| 259 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | static struct proc_dir_entry *proc_cciss; |
| 262 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 263 | static void cciss_seq_show_header(struct seq_file *seq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 265 | ctlr_info_t *h = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 267 | seq_printf(seq, "%s: HP %s Controller\n" |
| 268 | "Board ID: 0x%08lx\n" |
| 269 | "Firmware Version: %c%c%c%c\n" |
| 270 | "IRQ: %d\n" |
| 271 | "Logical drives: %d\n" |
| 272 | "Current Q depth: %d\n" |
| 273 | "Current # commands on controller: %d\n" |
| 274 | "Max Q depth since init: %d\n" |
| 275 | "Max # commands on controller since init: %d\n" |
| 276 | "Max SG entries since init: %d\n", |
| 277 | h->devname, |
| 278 | h->product_name, |
| 279 | (unsigned long)h->board_id, |
| 280 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], |
| 281 | h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], |
| 282 | h->num_luns, |
| 283 | h->Qdepth, h->commands_outstanding, |
| 284 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
| 285 | |
| 286 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 287 | cciss_seq_tape_report(seq, h->ctlr); |
| 288 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 289 | } |
| 290 | |
| 291 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
| 292 | { |
| 293 | ctlr_info_t *h = seq->private; |
| 294 | unsigned ctlr = h->ctlr; |
| 295 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
| 297 | /* prevent displaying bogus info during configuration |
| 298 | * or deconfiguration of a logical volume |
| 299 | */ |
| 300 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 301 | if (h->busy_configuring) { |
| 302 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 303 | return ERR_PTR(-EBUSY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | } |
| 305 | h->busy_configuring = 1; |
| 306 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 307 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 308 | if (*pos == 0) |
| 309 | cciss_seq_show_header(seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 311 | return pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 314 | static int cciss_seq_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 316 | sector_t vol_sz, vol_sz_frac; |
| 317 | ctlr_info_t *h = seq->private; |
| 318 | unsigned ctlr = h->ctlr; |
| 319 | loff_t *pos = v; |
| 320 | drive_info_struct *drv = &h->drv[*pos]; |
| 321 | |
| 322 | if (*pos > h->highest_lun) |
| 323 | return 0; |
| 324 | |
| 325 | if (drv->heads == 0) |
| 326 | return 0; |
| 327 | |
| 328 | vol_sz = drv->nr_blocks; |
| 329 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 330 | vol_sz_frac *= 100; |
| 331 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 332 | |
| 333 | if (drv->raid_level > 5) |
| 334 | drv->raid_level = RAID_UNKNOWN; |
| 335 | seq_printf(seq, "cciss/c%dd%d:" |
| 336 | "\t%4u.%02uGB\tRAID %s\n", |
| 337 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, |
| 338 | raid_label[drv->raid_level]); |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 343 | { |
| 344 | ctlr_info_t *h = seq->private; |
| 345 | |
| 346 | if (*pos > h->highest_lun) |
| 347 | return NULL; |
| 348 | *pos += 1; |
| 349 | |
| 350 | return pos; |
| 351 | } |
| 352 | |
| 353 | static void cciss_seq_stop(struct seq_file *seq, void *v) |
| 354 | { |
| 355 | ctlr_info_t *h = seq->private; |
| 356 | |
| 357 | /* Only reset h->busy_configuring if we succeeded in setting |
| 358 | * it during cciss_seq_start. */ |
| 359 | if (v == ERR_PTR(-EBUSY)) |
| 360 | return; |
| 361 | |
| 362 | h->busy_configuring = 0; |
| 363 | } |
| 364 | |
| 365 | static struct seq_operations cciss_seq_ops = { |
| 366 | .start = cciss_seq_start, |
| 367 | .show = cciss_seq_show, |
| 368 | .next = cciss_seq_next, |
| 369 | .stop = cciss_seq_stop, |
| 370 | }; |
| 371 | |
| 372 | static int cciss_seq_open(struct inode *inode, struct file *file) |
| 373 | { |
| 374 | int ret = seq_open(file, &cciss_seq_ops); |
| 375 | struct seq_file *seq = file->private_data; |
| 376 | |
| 377 | if (!ret) |
| 378 | seq->private = PDE(inode)->data; |
| 379 | |
| 380 | return ret; |
| 381 | } |
| 382 | |
| 383 | static ssize_t |
| 384 | cciss_proc_write(struct file *file, const char __user *buf, |
| 385 | size_t length, loff_t *ppos) |
| 386 | { |
| 387 | int err; |
| 388 | char *buffer; |
| 389 | |
| 390 | #ifndef CONFIG_CISS_SCSI_TAPE |
| 391 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | #endif |
| 393 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 394 | if (!buf || length > PAGE_SIZE - 1) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 395 | return -EINVAL; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 396 | |
| 397 | buffer = (char *)__get_free_page(GFP_KERNEL); |
| 398 | if (!buffer) |
| 399 | return -ENOMEM; |
| 400 | |
| 401 | err = -EFAULT; |
| 402 | if (copy_from_user(buffer, buf, length)) |
| 403 | goto out; |
| 404 | buffer[length] = '\0'; |
| 405 | |
| 406 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 407 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { |
| 408 | struct seq_file *seq = file->private_data; |
| 409 | ctlr_info_t *h = seq->private; |
| 410 | int rc; |
| 411 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 412 | rc = cciss_engage_scsi(h->ctlr); |
| 413 | if (rc != 0) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 414 | err = -rc; |
| 415 | else |
| 416 | err = length; |
| 417 | } else |
| 418 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 419 | err = -EINVAL; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 420 | /* might be nice to have "disengage" too, but it's not |
| 421 | safely possible. (only 1 module use count, lock issues.) */ |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 422 | |
| 423 | out: |
| 424 | free_page((unsigned long)buffer); |
| 425 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | } |
| 427 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 428 | static struct file_operations cciss_proc_fops = { |
| 429 | .owner = THIS_MODULE, |
| 430 | .open = cciss_seq_open, |
| 431 | .read = seq_read, |
| 432 | .llseek = seq_lseek, |
| 433 | .release = seq_release, |
| 434 | .write = cciss_proc_write, |
| 435 | }; |
| 436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | static void __devinit cciss_procinit(int i) |
| 438 | { |
| 439 | struct proc_dir_entry *pde; |
| 440 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 441 | if (proc_cciss == NULL) |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 442 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 443 | if (!proc_cciss) |
| 444 | return; |
Denis V. Lunev | 3dfcf9c | 2008-05-01 04:35:14 -0700 | [diff] [blame] | 445 | pde = proc_create_data(hba[i]->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 446 | S_IROTH, proc_cciss, |
Denis V. Lunev | 3dfcf9c | 2008-05-01 04:35:14 -0700 | [diff] [blame] | 447 | &cciss_proc_fops, hba[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 449 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 451 | /* |
| 452 | * For operations that cannot sleep, a command block is allocated at init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 454 | * which ones are free or in use. For operations that can wait for kmalloc |
| 455 | * to possible sleep, this routine can be called with get_from_pool set to 0. |
| 456 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. |
| 457 | */ |
| 458 | static CommandList_struct *cmd_alloc(ctlr_info_t *h, int get_from_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | { |
| 460 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 461 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | u64bit temp64; |
| 463 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 464 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 465 | if (!get_from_pool) { |
| 466 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, |
| 467 | sizeof(CommandList_struct), &cmd_dma_handle); |
| 468 | if (c == NULL) |
| 469 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | memset(c, 0, sizeof(CommandList_struct)); |
| 471 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 472 | c->cmdindex = -1; |
| 473 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 474 | c->err_info = (ErrorInfo_struct *) |
| 475 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 476 | &err_dma_handle); |
| 477 | |
| 478 | if (c->err_info == NULL) { |
| 479 | pci_free_consistent(h->pdev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 481 | return NULL; |
| 482 | } |
| 483 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 484 | } else { /* get it out of the controllers pool */ |
| 485 | |
| 486 | do { |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 487 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
| 488 | if (i == h->nr_cmds) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 489 | return NULL; |
| 490 | } while (test_and_set_bit |
| 491 | (i & (BITS_PER_LONG - 1), |
| 492 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | #ifdef CCISS_DEBUG |
| 494 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); |
| 495 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 496 | c = h->cmd_pool + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | memset(c, 0, sizeof(CommandList_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 498 | cmd_dma_handle = h->cmd_pool_dhandle |
| 499 | + i * sizeof(CommandList_struct); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | c->err_info = h->errinfo_pool + i; |
| 501 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 502 | err_dma_handle = h->errinfo_pool_dhandle |
| 503 | + i * sizeof(ErrorInfo_struct); |
| 504 | h->nr_allocs++; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 505 | |
| 506 | c->cmdindex = i; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 507 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | |
| 509 | c->busaddr = (__u32) cmd_dma_handle; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 510 | temp64.val = (__u64) err_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 512 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 513 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 514 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | c->ctlr = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 516 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 519 | /* |
| 520 | * Frees a command block that was previously allocated with cmd_alloc(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | */ |
| 522 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) |
| 523 | { |
| 524 | int i; |
| 525 | u64bit temp64; |
| 526 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 527 | if (!got_from_pool) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 529 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 530 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 531 | c->err_info, (dma_addr_t) temp64.val); |
| 532 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), |
| 533 | c, (dma_addr_t) c->busaddr); |
| 534 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | i = c - h->cmd_pool; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 536 | clear_bit(i & (BITS_PER_LONG - 1), |
| 537 | h->cmd_pool_bits + (i / BITS_PER_LONG)); |
| 538 | h->nr_frees++; |
| 539 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 543 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 544 | return disk->queue->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 548 | { |
| 549 | return disk->private_data; |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * Open. Make sure the device is really there. |
| 554 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 555 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 557 | ctlr_info_t *host = get_host(bdev->bd_disk); |
| 558 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
| 560 | #ifdef CCISS_DEBUG |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 561 | printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 562 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 564 | if (host->busy_initializing || drv->busy_configuring) |
| 565 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | /* |
| 567 | * Root is allowed to open raw volume zero even if it's not configured |
| 568 | * so array config can still work. Root is also allowed to open any |
| 569 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 570 | * disk information. I don't think I really like this |
| 571 | * but I'm already using way to many device nodes to claim another one |
| 572 | * for "raw controller". |
| 573 | */ |
Mike Miller | 7a06f78 | 2006-12-06 20:35:08 -0800 | [diff] [blame] | 574 | if (drv->heads == 0) { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 575 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | /* if not node 0 make sure it is a partition = 0 */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 577 | if (MINOR(bdev->bd_dev) & 0x0f) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 578 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | /* if it is, make sure we have a LUN ID */ |
| 580 | } else if (drv->LunID == 0) { |
| 581 | return -ENXIO; |
| 582 | } |
| 583 | } |
| 584 | if (!capable(CAP_SYS_ADMIN)) |
| 585 | return -EPERM; |
| 586 | } |
| 587 | drv->usage_count++; |
| 588 | host->usage_count++; |
| 589 | return 0; |
| 590 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | /* |
| 593 | * Close. Sync first. |
| 594 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 595 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 597 | ctlr_info_t *host = get_host(disk); |
| 598 | drive_info_struct *drv = get_drv(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | #ifdef CCISS_DEBUG |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 601 | printk(KERN_DEBUG "cciss_release %s\n", disk->disk_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 602 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
| 604 | drv->usage_count--; |
| 605 | host->usage_count--; |
| 606 | return 0; |
| 607 | } |
| 608 | |
| 609 | #ifdef CONFIG_COMPAT |
| 610 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 611 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
| 612 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | { |
| 614 | int ret; |
| 615 | lock_kernel(); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 616 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | unlock_kernel(); |
| 618 | return ret; |
| 619 | } |
| 620 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 621 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 622 | unsigned cmd, unsigned long arg); |
| 623 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 624 | unsigned cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 626 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
| 627 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | { |
| 629 | switch (cmd) { |
| 630 | case CCISS_GETPCIINFO: |
| 631 | case CCISS_GETINTINFO: |
| 632 | case CCISS_SETINTINFO: |
| 633 | case CCISS_GETNODENAME: |
| 634 | case CCISS_SETNODENAME: |
| 635 | case CCISS_GETHEARTBEAT: |
| 636 | case CCISS_GETBUSTYPES: |
| 637 | case CCISS_GETFIRMVER: |
| 638 | case CCISS_GETDRIVVER: |
| 639 | case CCISS_REVALIDVOLS: |
| 640 | case CCISS_DEREGDISK: |
| 641 | case CCISS_REGNEWDISK: |
| 642 | case CCISS_REGNEWD: |
| 643 | case CCISS_RESCANDISK: |
| 644 | case CCISS_GETLUNINFO: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 645 | return do_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| 647 | case CCISS_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 648 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | case CCISS_BIG_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 650 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | |
| 652 | default: |
| 653 | return -ENOIOCTLCMD; |
| 654 | } |
| 655 | } |
| 656 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 657 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 658 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | { |
| 660 | IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 661 | (IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | IOCTL_Command_struct arg64; |
| 663 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 664 | int err; |
| 665 | u32 cp; |
| 666 | |
| 667 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 668 | err |= |
| 669 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 670 | sizeof(arg64.LUN_info)); |
| 671 | err |= |
| 672 | copy_from_user(&arg64.Request, &arg32->Request, |
| 673 | sizeof(arg64.Request)); |
| 674 | err |= |
| 675 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 676 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 678 | err |= get_user(cp, &arg32->buf); |
| 679 | arg64.buf = compat_ptr(cp); |
| 680 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 681 | |
| 682 | if (err) |
| 683 | return -EFAULT; |
| 684 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 685 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | if (err) |
| 687 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 688 | err |= |
| 689 | copy_in_user(&arg32->error_info, &p->error_info, |
| 690 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | if (err) |
| 692 | return -EFAULT; |
| 693 | return err; |
| 694 | } |
| 695 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 696 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 697 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | { |
| 699 | BIG_IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 700 | (BIG_IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | BIG_IOCTL_Command_struct arg64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 702 | BIG_IOCTL_Command_struct __user *p = |
| 703 | compat_alloc_user_space(sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | int err; |
| 705 | u32 cp; |
| 706 | |
| 707 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 708 | err |= |
| 709 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 710 | sizeof(arg64.LUN_info)); |
| 711 | err |= |
| 712 | copy_from_user(&arg64.Request, &arg32->Request, |
| 713 | sizeof(arg64.Request)); |
| 714 | err |= |
| 715 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 716 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 718 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 719 | err |= get_user(cp, &arg32->buf); |
| 720 | arg64.buf = compat_ptr(cp); |
| 721 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 722 | |
| 723 | if (err) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 724 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 726 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | if (err) |
| 728 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 729 | err |= |
| 730 | copy_in_user(&arg32->error_info, &p->error_info, |
| 731 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | if (err) |
| 733 | return -EFAULT; |
| 734 | return err; |
| 735 | } |
| 736 | #endif |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 737 | |
| 738 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 739 | { |
| 740 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
| 741 | |
| 742 | if (!drv->cylinders) |
| 743 | return -ENXIO; |
| 744 | |
| 745 | geo->heads = drv->heads; |
| 746 | geo->sectors = drv->sectors; |
| 747 | geo->cylinders = drv->cylinders; |
| 748 | return 0; |
| 749 | } |
| 750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 752 | * ioctl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 754 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 755 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | struct gendisk *disk = bdev->bd_disk; |
| 758 | ctlr_info_t *host = get_host(disk); |
| 759 | drive_info_struct *drv = get_drv(disk); |
| 760 | int ctlr = host->ctlr; |
| 761 | void __user *argp = (void __user *)arg; |
| 762 | |
| 763 | #ifdef CCISS_DEBUG |
| 764 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 765 | #endif /* CCISS_DEBUG */ |
| 766 | |
| 767 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | case CCISS_GETPCIINFO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 770 | cciss_pci_info_struct pciinfo; |
| 771 | |
| 772 | if (!arg) |
| 773 | return -EINVAL; |
| 774 | pciinfo.domain = pci_domain_nr(host->pdev->bus); |
| 775 | pciinfo.bus = host->pdev->bus->number; |
| 776 | pciinfo.dev_fn = host->pdev->devfn; |
| 777 | pciinfo.board_id = host->board_id; |
| 778 | if (copy_to_user |
| 779 | (argp, &pciinfo, sizeof(cciss_pci_info_struct))) |
| 780 | return -EFAULT; |
| 781 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 783 | case CCISS_GETINTINFO: |
| 784 | { |
| 785 | cciss_coalint_struct intinfo; |
| 786 | if (!arg) |
| 787 | return -EINVAL; |
| 788 | intinfo.delay = |
| 789 | readl(&host->cfgtable->HostWrite.CoalIntDelay); |
| 790 | intinfo.count = |
| 791 | readl(&host->cfgtable->HostWrite.CoalIntCount); |
| 792 | if (copy_to_user |
| 793 | (argp, &intinfo, sizeof(cciss_coalint_struct))) |
| 794 | return -EFAULT; |
| 795 | return 0; |
| 796 | } |
| 797 | case CCISS_SETINTINFO: |
| 798 | { |
| 799 | cciss_coalint_struct intinfo; |
| 800 | unsigned long flags; |
| 801 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 803 | if (!arg) |
| 804 | return -EINVAL; |
| 805 | if (!capable(CAP_SYS_ADMIN)) |
| 806 | return -EPERM; |
| 807 | if (copy_from_user |
| 808 | (&intinfo, argp, sizeof(cciss_coalint_struct))) |
| 809 | return -EFAULT; |
| 810 | if ((intinfo.delay == 0) && (intinfo.count == 0)) |
| 811 | { |
| 812 | // printk("cciss_ioctl: delay and count cannot be 0\n"); |
| 813 | return -EINVAL; |
| 814 | } |
| 815 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 816 | /* Update the field, and then ring the doorbell */ |
| 817 | writel(intinfo.delay, |
| 818 | &(host->cfgtable->HostWrite.CoalIntDelay)); |
| 819 | writel(intinfo.count, |
| 820 | &(host->cfgtable->HostWrite.CoalIntCount)); |
| 821 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 822 | |
| 823 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 824 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 825 | & CFGTBL_ChangeReq)) |
| 826 | break; |
| 827 | /* delay and try again */ |
| 828 | udelay(1000); |
| 829 | } |
| 830 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 831 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 832 | return -EAGAIN; |
| 833 | return 0; |
| 834 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | case CCISS_GETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 836 | { |
| 837 | NodeName_type NodeName; |
| 838 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 840 | if (!arg) |
| 841 | return -EINVAL; |
| 842 | for (i = 0; i < 16; i++) |
| 843 | NodeName[i] = |
| 844 | readb(&host->cfgtable->ServerName[i]); |
| 845 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) |
| 846 | return -EFAULT; |
| 847 | return 0; |
| 848 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | case CCISS_SETNODENAME: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 850 | { |
| 851 | NodeName_type NodeName; |
| 852 | unsigned long flags; |
| 853 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 855 | if (!arg) |
| 856 | return -EINVAL; |
| 857 | if (!capable(CAP_SYS_ADMIN)) |
| 858 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 860 | if (copy_from_user |
| 861 | (NodeName, argp, sizeof(NodeName_type))) |
| 862 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 864 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 866 | /* Update the field, and then ring the doorbell */ |
| 867 | for (i = 0; i < 16; i++) |
| 868 | writeb(NodeName[i], |
| 869 | &host->cfgtable->ServerName[i]); |
| 870 | |
| 871 | writel(CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); |
| 872 | |
| 873 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 874 | if (!(readl(host->vaddr + SA5_DOORBELL) |
| 875 | & CFGTBL_ChangeReq)) |
| 876 | break; |
| 877 | /* delay and try again */ |
| 878 | udelay(1000); |
| 879 | } |
| 880 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 881 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 882 | return -EAGAIN; |
| 883 | return 0; |
| 884 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
| 886 | case CCISS_GETHEARTBEAT: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 887 | { |
| 888 | Heartbeat_type heartbeat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 890 | if (!arg) |
| 891 | return -EINVAL; |
| 892 | heartbeat = readl(&host->cfgtable->HeartBeat); |
| 893 | if (copy_to_user |
| 894 | (argp, &heartbeat, sizeof(Heartbeat_type))) |
| 895 | return -EFAULT; |
| 896 | return 0; |
| 897 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | case CCISS_GETBUSTYPES: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 899 | { |
| 900 | BusTypes_type BusTypes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 902 | if (!arg) |
| 903 | return -EINVAL; |
| 904 | BusTypes = readl(&host->cfgtable->BusTypes); |
| 905 | if (copy_to_user |
| 906 | (argp, &BusTypes, sizeof(BusTypes_type))) |
| 907 | return -EFAULT; |
| 908 | return 0; |
| 909 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | case CCISS_GETFIRMVER: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 911 | { |
| 912 | FirmwareVer_type firmware; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 914 | if (!arg) |
| 915 | return -EINVAL; |
| 916 | memcpy(firmware, host->firm_ver, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 918 | if (copy_to_user |
| 919 | (argp, firmware, sizeof(FirmwareVer_type))) |
| 920 | return -EFAULT; |
| 921 | return 0; |
| 922 | } |
| 923 | case CCISS_GETDRIVVER: |
| 924 | { |
| 925 | DriverVer_type DriverVer = DRIVER_VERSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 927 | if (!arg) |
| 928 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 930 | if (copy_to_user |
| 931 | (argp, &DriverVer, sizeof(DriverVer_type))) |
| 932 | return -EFAULT; |
| 933 | return 0; |
| 934 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 936 | case CCISS_DEREGDISK: |
| 937 | case CCISS_REGNEWD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | case CCISS_REVALIDVOLS: |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 939 | return rebuild_lun_table(host, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 941 | case CCISS_GETLUNINFO:{ |
| 942 | LogvolInfo_struct luninfo; |
| 943 | |
| 944 | luninfo.LunID = drv->LunID; |
| 945 | luninfo.num_opens = drv->usage_count; |
| 946 | luninfo.num_parts = 0; |
| 947 | if (copy_to_user(argp, &luninfo, |
| 948 | sizeof(LogvolInfo_struct))) |
| 949 | return -EFAULT; |
| 950 | return 0; |
| 951 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | case CCISS_PASSTHRU: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 954 | IOCTL_Command_struct iocommand; |
| 955 | CommandList_struct *c; |
| 956 | char *buff = NULL; |
| 957 | u64bit temp64; |
| 958 | unsigned long flags; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 959 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 960 | |
| 961 | if (!arg) |
| 962 | return -EINVAL; |
| 963 | |
| 964 | if (!capable(CAP_SYS_RAWIO)) |
| 965 | return -EPERM; |
| 966 | |
| 967 | if (copy_from_user |
| 968 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | return -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 970 | if ((iocommand.buf_size < 1) && |
| 971 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 972 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 974 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ |
| 975 | /* Check kmalloc limits */ |
| 976 | if (iocommand.buf_size > 128000) |
| 977 | return -EINVAL; |
| 978 | #endif |
| 979 | if (iocommand.buf_size > 0) { |
| 980 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 981 | if (buff == NULL) |
| 982 | return -EFAULT; |
| 983 | } |
| 984 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 985 | /* Copy the data into the buffer we created */ |
| 986 | if (copy_from_user |
| 987 | (buff, iocommand.buf, iocommand.buf_size)) { |
| 988 | kfree(buff); |
| 989 | return -EFAULT; |
| 990 | } |
| 991 | } else { |
| 992 | memset(buff, 0, iocommand.buf_size); |
| 993 | } |
| 994 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 995 | kfree(buff); |
| 996 | return -ENOMEM; |
| 997 | } |
| 998 | // Fill in the command type |
| 999 | c->cmd_type = CMD_IOCTL_PEND; |
| 1000 | // Fill in Command Header |
| 1001 | c->Header.ReplyQueue = 0; // unused in simple mode |
| 1002 | if (iocommand.buf_size > 0) // buffer to fill |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1004 | c->Header.SGList = 1; |
| 1005 | c->Header.SGTotal = 1; |
| 1006 | } else // no buffers to fill |
| 1007 | { |
| 1008 | c->Header.SGList = 0; |
| 1009 | c->Header.SGTotal = 0; |
| 1010 | } |
| 1011 | c->Header.LUN = iocommand.LUN_info; |
| 1012 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag |
| 1013 | |
| 1014 | // Fill in Request block |
| 1015 | c->Request = iocommand.Request; |
| 1016 | |
| 1017 | // Fill in the scatter gather information |
| 1018 | if (iocommand.buf_size > 0) { |
| 1019 | temp64.val = pci_map_single(host->pdev, buff, |
| 1020 | iocommand.buf_size, |
| 1021 | PCI_DMA_BIDIRECTIONAL); |
| 1022 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 1023 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 1024 | c->SG[0].Len = iocommand.buf_size; |
| 1025 | c->SG[0].Ext = 0; // we are not chaining |
| 1026 | } |
| 1027 | c->waiting = &wait; |
| 1028 | |
| 1029 | /* Put the request on the tail of the request queue */ |
| 1030 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1031 | addQ(&host->reqQ, c); |
| 1032 | host->Qdepth++; |
| 1033 | start_io(host); |
| 1034 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1035 | |
| 1036 | wait_for_completion(&wait); |
| 1037 | |
| 1038 | /* unlock the buffers from DMA */ |
| 1039 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 1040 | temp64.val32.upper = c->SG[0].Addr.upper; |
| 1041 | pci_unmap_single(host->pdev, (dma_addr_t) temp64.val, |
| 1042 | iocommand.buf_size, |
| 1043 | PCI_DMA_BIDIRECTIONAL); |
| 1044 | |
| 1045 | /* Copy the error information out */ |
| 1046 | iocommand.error_info = *(c->err_info); |
| 1047 | if (copy_to_user |
| 1048 | (argp, &iocommand, sizeof(IOCTL_Command_struct))) { |
| 1049 | kfree(buff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | cmd_free(host, c, 0); |
| 1051 | return -EFAULT; |
| 1052 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1054 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 1055 | /* Copy the data out of the buffer we created */ |
| 1056 | if (copy_to_user |
| 1057 | (iocommand.buf, buff, iocommand.buf_size)) { |
| 1058 | kfree(buff); |
| 1059 | cmd_free(host, c, 0); |
| 1060 | return -EFAULT; |
| 1061 | } |
| 1062 | } |
| 1063 | kfree(buff); |
| 1064 | cmd_free(host, c, 0); |
| 1065 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1067 | case CCISS_BIG_PASSTHRU:{ |
| 1068 | BIG_IOCTL_Command_struct *ioc; |
| 1069 | CommandList_struct *c; |
| 1070 | unsigned char **buff = NULL; |
| 1071 | int *buff_size = NULL; |
| 1072 | u64bit temp64; |
| 1073 | unsigned long flags; |
| 1074 | BYTE sg_used = 0; |
| 1075 | int status = 0; |
| 1076 | int i; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 1077 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1078 | __u32 left; |
| 1079 | __u32 sz; |
| 1080 | BYTE __user *data_ptr; |
| 1081 | |
| 1082 | if (!arg) |
| 1083 | return -EINVAL; |
| 1084 | if (!capable(CAP_SYS_RAWIO)) |
| 1085 | return -EPERM; |
| 1086 | ioc = (BIG_IOCTL_Command_struct *) |
| 1087 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 1088 | if (!ioc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | status = -ENOMEM; |
| 1090 | goto cleanup1; |
| 1091 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1092 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 1093 | status = -EFAULT; |
| 1094 | goto cleanup1; |
| 1095 | } |
| 1096 | if ((ioc->buf_size < 1) && |
| 1097 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 1098 | status = -EINVAL; |
| 1099 | goto cleanup1; |
| 1100 | } |
| 1101 | /* Check kmalloc limits using all SGs */ |
| 1102 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 1103 | status = -EINVAL; |
| 1104 | goto cleanup1; |
| 1105 | } |
| 1106 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 1107 | status = -EINVAL; |
| 1108 | goto cleanup1; |
| 1109 | } |
| 1110 | buff = |
| 1111 | kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 1112 | if (!buff) { |
| 1113 | status = -ENOMEM; |
| 1114 | goto cleanup1; |
| 1115 | } |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 1116 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1117 | GFP_KERNEL); |
| 1118 | if (!buff_size) { |
| 1119 | status = -ENOMEM; |
| 1120 | goto cleanup1; |
| 1121 | } |
| 1122 | left = ioc->buf_size; |
| 1123 | data_ptr = ioc->buf; |
| 1124 | while (left) { |
| 1125 | sz = (left > |
| 1126 | ioc->malloc_size) ? ioc-> |
| 1127 | malloc_size : left; |
| 1128 | buff_size[sg_used] = sz; |
| 1129 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1130 | if (buff[sg_used] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | status = -ENOMEM; |
Jens Axboe | 15534d3 | 2005-11-18 22:02:44 +0100 | [diff] [blame] | 1132 | goto cleanup1; |
| 1133 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1134 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1135 | if (copy_from_user |
| 1136 | (buff[sg_used], data_ptr, sz)) { |
Nikanth Karthikesan | f7108f9 | 2008-08-04 10:56:07 +0200 | [diff] [blame] | 1137 | status = -EFAULT; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1138 | goto cleanup1; |
| 1139 | } |
| 1140 | } else { |
| 1141 | memset(buff[sg_used], 0, sz); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1143 | left -= sz; |
| 1144 | data_ptr += sz; |
| 1145 | sg_used++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1147 | if ((c = cmd_alloc(host, 0)) == NULL) { |
| 1148 | status = -ENOMEM; |
| 1149 | goto cleanup1; |
| 1150 | } |
| 1151 | c->cmd_type = CMD_IOCTL_PEND; |
| 1152 | c->Header.ReplyQueue = 0; |
| 1153 | |
| 1154 | if (ioc->buf_size > 0) { |
| 1155 | c->Header.SGList = sg_used; |
| 1156 | c->Header.SGTotal = sg_used; |
| 1157 | } else { |
| 1158 | c->Header.SGList = 0; |
| 1159 | c->Header.SGTotal = 0; |
| 1160 | } |
| 1161 | c->Header.LUN = ioc->LUN_info; |
| 1162 | c->Header.Tag.lower = c->busaddr; |
| 1163 | |
| 1164 | c->Request = ioc->Request; |
| 1165 | if (ioc->buf_size > 0) { |
| 1166 | int i; |
| 1167 | for (i = 0; i < sg_used; i++) { |
| 1168 | temp64.val = |
| 1169 | pci_map_single(host->pdev, buff[i], |
| 1170 | buff_size[i], |
| 1171 | PCI_DMA_BIDIRECTIONAL); |
| 1172 | c->SG[i].Addr.lower = |
| 1173 | temp64.val32.lower; |
| 1174 | c->SG[i].Addr.upper = |
| 1175 | temp64.val32.upper; |
| 1176 | c->SG[i].Len = buff_size[i]; |
| 1177 | c->SG[i].Ext = 0; /* we are not chaining */ |
| 1178 | } |
| 1179 | } |
| 1180 | c->waiting = &wait; |
| 1181 | /* Put the request on the tail of the request queue */ |
| 1182 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 1183 | addQ(&host->reqQ, c); |
| 1184 | host->Qdepth++; |
| 1185 | start_io(host); |
| 1186 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 1187 | wait_for_completion(&wait); |
| 1188 | /* unlock the buffers from DMA */ |
| 1189 | for (i = 0; i < sg_used; i++) { |
| 1190 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1191 | temp64.val32.upper = c->SG[i].Addr.upper; |
| 1192 | pci_unmap_single(host->pdev, |
| 1193 | (dma_addr_t) temp64.val, buff_size[i], |
| 1194 | PCI_DMA_BIDIRECTIONAL); |
| 1195 | } |
| 1196 | /* Copy the error information out */ |
| 1197 | ioc->error_info = *(c->err_info); |
| 1198 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 1199 | cmd_free(host, c, 0); |
| 1200 | status = -EFAULT; |
| 1201 | goto cleanup1; |
| 1202 | } |
| 1203 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1204 | /* Copy the data out of the buffer we created */ |
| 1205 | BYTE __user *ptr = ioc->buf; |
| 1206 | for (i = 0; i < sg_used; i++) { |
| 1207 | if (copy_to_user |
| 1208 | (ptr, buff[i], buff_size[i])) { |
| 1209 | cmd_free(host, c, 0); |
| 1210 | status = -EFAULT; |
| 1211 | goto cleanup1; |
| 1212 | } |
| 1213 | ptr += buff_size[i]; |
| 1214 | } |
| 1215 | } |
| 1216 | cmd_free(host, c, 0); |
| 1217 | status = 0; |
| 1218 | cleanup1: |
| 1219 | if (buff) { |
| 1220 | for (i = 0; i < sg_used; i++) |
| 1221 | kfree(buff[i]); |
| 1222 | kfree(buff); |
| 1223 | } |
| 1224 | kfree(buff_size); |
| 1225 | kfree(ioc); |
| 1226 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1228 | |
| 1229 | /* scsi_cmd_ioctl handles these, below, though some are not */ |
| 1230 | /* very meaningful for cciss. SG_IO is the main one people want. */ |
| 1231 | |
| 1232 | case SG_GET_VERSION_NUM: |
| 1233 | case SG_SET_TIMEOUT: |
| 1234 | case SG_GET_TIMEOUT: |
| 1235 | case SG_GET_RESERVED_SIZE: |
| 1236 | case SG_SET_RESERVED_SIZE: |
| 1237 | case SG_EMULATED_HOST: |
| 1238 | case SG_IO: |
| 1239 | case SCSI_IOCTL_SEND_COMMAND: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1240 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1241 | |
| 1242 | /* scsi_cmd_ioctl would normally handle these, below, but */ |
| 1243 | /* they aren't a good fit for cciss, as CD-ROMs are */ |
| 1244 | /* not supported, and we don't have any bus/target/lun */ |
| 1245 | /* which we present to the kernel. */ |
| 1246 | |
| 1247 | case CDROM_SEND_PACKET: |
| 1248 | case CDROMCLOSETRAY: |
| 1249 | case CDROMEJECT: |
| 1250 | case SCSI_IOCTL_GET_IDLUN: |
| 1251 | case SCSI_IOCTL_GET_BUS_NUMBER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | default: |
| 1253 | return -ENOTTY; |
| 1254 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | } |
| 1256 | |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1257 | static void cciss_check_queues(ctlr_info_t *h) |
| 1258 | { |
| 1259 | int start_queue = h->next_to_run; |
| 1260 | int i; |
| 1261 | |
| 1262 | /* check to see if we have maxed out the number of commands that can |
| 1263 | * be placed on the queue. If so then exit. We do this check here |
| 1264 | * in case the interrupt we serviced was from an ioctl and did not |
| 1265 | * free any new commands. |
| 1266 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1267 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1268 | return; |
| 1269 | |
| 1270 | /* We have room on the queue for more commands. Now we need to queue |
| 1271 | * them up. We will also keep track of the next queue to run so |
| 1272 | * that every queue gets a chance to be started first. |
| 1273 | */ |
| 1274 | for (i = 0; i < h->highest_lun + 1; i++) { |
| 1275 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); |
| 1276 | /* make sure the disk has been added and the drive is real |
| 1277 | * because this can be called from the middle of init_one. |
| 1278 | */ |
| 1279 | if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads)) |
| 1280 | continue; |
| 1281 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 1282 | |
| 1283 | /* check to see if we have maxed out the number of commands |
| 1284 | * that can be placed on the queue. |
| 1285 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1286 | if ((find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds)) == h->nr_cmds) { |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1287 | if (curr_queue == start_queue) { |
| 1288 | h->next_to_run = |
| 1289 | (start_queue + 1) % (h->highest_lun + 1); |
| 1290 | break; |
| 1291 | } else { |
| 1292 | h->next_to_run = curr_queue; |
| 1293 | break; |
| 1294 | } |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1295 | } |
| 1296 | } |
| 1297 | } |
| 1298 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1299 | static void cciss_softirq_done(struct request *rq) |
| 1300 | { |
| 1301 | CommandList_struct *cmd = rq->completion_data; |
| 1302 | ctlr_info_t *h = hba[cmd->ctlr]; |
| 1303 | unsigned long flags; |
| 1304 | u64bit temp64; |
| 1305 | int i, ddir; |
| 1306 | |
| 1307 | if (cmd->Request.Type.Direction == XFER_READ) |
| 1308 | ddir = PCI_DMA_FROMDEVICE; |
| 1309 | else |
| 1310 | ddir = PCI_DMA_TODEVICE; |
| 1311 | |
| 1312 | /* command did not need to be retried */ |
| 1313 | /* unmap the DMA mapping for all the scatter gather elements */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1314 | for (i = 0; i < cmd->Header.SGList; i++) { |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1315 | temp64.val32.lower = cmd->SG[i].Addr.lower; |
| 1316 | temp64.val32.upper = cmd->SG[i].Addr.upper; |
| 1317 | pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir); |
| 1318 | } |
| 1319 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1320 | #ifdef CCISS_DEBUG |
| 1321 | printk("Done with %p\n", rq); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1322 | #endif /* CCISS_DEBUG */ |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1323 | |
Kiyoshi Ueda | 3daeea2 | 2007-12-11 17:50:03 -0500 | [diff] [blame] | 1324 | if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, blk_rq_bytes(rq))) |
| 1325 | BUG(); |
| 1326 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1327 | spin_lock_irqsave(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1328 | cmd_free(h, cmd, 1); |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1329 | cciss_check_queues(h); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1330 | spin_unlock_irqrestore(&h->lock, flags); |
| 1331 | } |
| 1332 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1333 | /* This function gets the serial number of a logical drive via |
| 1334 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial |
| 1335 | * number cannot be had, for whatever reason, 16 bytes of 0xff |
| 1336 | * are returned instead. |
| 1337 | */ |
| 1338 | static void cciss_get_serial_no(int ctlr, int logvol, int withirq, |
| 1339 | unsigned char *serial_no, int buflen) |
| 1340 | { |
| 1341 | #define PAGE_83_INQ_BYTES 64 |
| 1342 | int rc; |
| 1343 | unsigned char *buf; |
| 1344 | |
| 1345 | if (buflen > 16) |
| 1346 | buflen = 16; |
| 1347 | memset(serial_no, 0xff, buflen); |
| 1348 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); |
| 1349 | if (!buf) |
| 1350 | return; |
| 1351 | memset(serial_no, 0, buflen); |
| 1352 | if (withirq) |
| 1353 | rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf, |
| 1354 | PAGE_83_INQ_BYTES, 1, logvol, 0x83, TYPE_CMD); |
| 1355 | else |
| 1356 | rc = sendcmd(CISS_INQUIRY, ctlr, buf, |
| 1357 | PAGE_83_INQ_BYTES, 1, logvol, 0x83, NULL, TYPE_CMD); |
| 1358 | if (rc == IO_OK) |
| 1359 | memcpy(serial_no, &buf[8], buflen); |
| 1360 | kfree(buf); |
| 1361 | return; |
| 1362 | } |
| 1363 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1364 | static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
| 1365 | int drv_index) |
| 1366 | { |
| 1367 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
| 1368 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
| 1369 | disk->major = h->major; |
| 1370 | disk->first_minor = drv_index << NWD_SHIFT; |
| 1371 | disk->fops = &cciss_fops; |
| 1372 | disk->private_data = &h->drv[drv_index]; |
| 1373 | |
| 1374 | /* Set up queue information */ |
| 1375 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); |
| 1376 | |
| 1377 | /* This is a hardware imposed limit. */ |
| 1378 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); |
| 1379 | |
| 1380 | /* This is a limit in the driver and could be eliminated. */ |
| 1381 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); |
| 1382 | |
| 1383 | blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); |
| 1384 | |
| 1385 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
| 1386 | |
| 1387 | disk->queue->queuedata = h; |
| 1388 | |
| 1389 | blk_queue_hardsect_size(disk->queue, |
| 1390 | h->drv[drv_index].block_size); |
| 1391 | |
| 1392 | /* Make sure all queue data is written out before */ |
| 1393 | /* setting h->drv[drv_index].queue, as setting this */ |
| 1394 | /* allows the interrupt handler to start the queue */ |
| 1395 | wmb(); |
| 1396 | h->drv[drv_index].queue = disk->queue; |
| 1397 | add_disk(disk); |
| 1398 | } |
| 1399 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1400 | /* This function will check the usage_count of the drive to be updated/added. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1401 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
| 1402 | * the drive's capacity, geometry, or serial number has changed, |
| 1403 | * then the drive information will be updated and the disk will be |
| 1404 | * re-registered with the kernel. If these conditions don't hold, |
| 1405 | * then it will be left alone for the next reboot. The exception to this |
| 1406 | * is disk 0 which will always be left registered with the kernel since it |
| 1407 | * is also the controller node. Any changes to disk 0 will show up on |
| 1408 | * the next reboot. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1409 | */ |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1410 | static void cciss_update_drive_info(int ctlr, int drv_index, int first_time) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1411 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1412 | ctlr_info_t *h = hba[ctlr]; |
| 1413 | struct gendisk *disk; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1414 | InquiryData_struct *inq_buff = NULL; |
| 1415 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1416 | sector_t total_size; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1417 | unsigned long flags = 0; |
| 1418 | int ret = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1419 | drive_info_struct *drvinfo; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1420 | int was_only_controller_node; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1421 | |
| 1422 | /* Get information about the disk and modify the driver structure */ |
| 1423 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 1424 | drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL); |
| 1425 | if (inq_buff == NULL || drvinfo == NULL) |
| 1426 | goto mem_msg; |
| 1427 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1428 | /* See if we're trying to update the "controller node" |
| 1429 | * this will happen the when the first logical drive gets |
| 1430 | * created by ACU. |
| 1431 | */ |
| 1432 | was_only_controller_node = (drv_index == 0 && |
| 1433 | h->drv[0].raid_level == -1); |
| 1434 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1435 | /* testing to see if 16-byte CDBs are already being used */ |
| 1436 | if (h->cciss_read == CCISS_READ_16) { |
| 1437 | cciss_read_capacity_16(h->ctlr, drv_index, 1, |
| 1438 | &total_size, &block_size); |
| 1439 | |
| 1440 | } else { |
| 1441 | cciss_read_capacity(ctlr, drv_index, 1, |
| 1442 | &total_size, &block_size); |
| 1443 | |
| 1444 | /* if read_capacity returns all F's this volume is >2TB */ |
| 1445 | /* in size so we switch to 16-byte CDB's for all */ |
| 1446 | /* read/write ops */ |
| 1447 | if (total_size == 0xFFFFFFFFULL) { |
| 1448 | cciss_read_capacity_16(ctlr, drv_index, 1, |
| 1449 | &total_size, &block_size); |
| 1450 | h->cciss_read = CCISS_READ_16; |
| 1451 | h->cciss_write = CCISS_WRITE_16; |
| 1452 | } else { |
| 1453 | h->cciss_read = CCISS_READ_10; |
| 1454 | h->cciss_write = CCISS_WRITE_10; |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, |
| 1459 | inq_buff, drvinfo); |
| 1460 | drvinfo->block_size = block_size; |
| 1461 | drvinfo->nr_blocks = total_size + 1; |
| 1462 | |
| 1463 | cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, |
| 1464 | sizeof(drvinfo->serial_no)); |
| 1465 | |
| 1466 | /* Is it the same disk we already know, and nothing's changed? */ |
| 1467 | if (h->drv[drv_index].raid_level != -1 && |
| 1468 | ((memcmp(drvinfo->serial_no, |
| 1469 | h->drv[drv_index].serial_no, 16) == 0) && |
| 1470 | drvinfo->block_size == h->drv[drv_index].block_size && |
| 1471 | drvinfo->nr_blocks == h->drv[drv_index].nr_blocks && |
| 1472 | drvinfo->heads == h->drv[drv_index].heads && |
| 1473 | drvinfo->sectors == h->drv[drv_index].sectors && |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1474 | drvinfo->cylinders == h->drv[drv_index].cylinders)) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1475 | /* The disk is unchanged, nothing to update */ |
| 1476 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1477 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1478 | /* If we get here it's not the same disk, or something's changed, |
| 1479 | * so we need to * deregister it, and re-register it, if it's not |
| 1480 | * in use. |
| 1481 | * If the disk already exists then deregister it before proceeding |
| 1482 | * (unless it's the first disk (for the controller node). |
| 1483 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1484 | if (h->drv[drv_index].raid_level != -1 && drv_index != 0) { |
| 1485 | printk(KERN_WARNING "disk %d has changed.\n", drv_index); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1486 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 1487 | h->drv[drv_index].busy_configuring = 1; |
| 1488 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
scameron@beardog.cca.cpqcorp.net | e14ac67 | 2008-04-17 13:19:03 +0200 | [diff] [blame] | 1489 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1490 | /* deregister_disk sets h->drv[drv_index].queue = NULL |
| 1491 | * which keeps the interrupt handler from starting |
| 1492 | * the queue. |
| 1493 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1494 | ret = deregister_disk(h->gendisk[drv_index], |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1495 | &h->drv[drv_index], 0); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1496 | h->drv[drv_index].busy_configuring = 0; |
| 1497 | } |
| 1498 | |
| 1499 | /* If the disk is in use return */ |
| 1500 | if (ret) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1501 | goto freeret; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1502 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1503 | /* Save the new information from cciss_geometry_inquiry |
| 1504 | * and serial number inquiry. |
| 1505 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1506 | h->drv[drv_index].block_size = drvinfo->block_size; |
| 1507 | h->drv[drv_index].nr_blocks = drvinfo->nr_blocks; |
| 1508 | h->drv[drv_index].heads = drvinfo->heads; |
| 1509 | h->drv[drv_index].sectors = drvinfo->sectors; |
| 1510 | h->drv[drv_index].cylinders = drvinfo->cylinders; |
| 1511 | h->drv[drv_index].raid_level = drvinfo->raid_level; |
| 1512 | memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1513 | |
| 1514 | ++h->num_luns; |
| 1515 | disk = h->gendisk[drv_index]; |
| 1516 | set_capacity(disk, h->drv[drv_index].nr_blocks); |
| 1517 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1518 | /* If it's not disk 0 (drv_index != 0) |
| 1519 | * or if it was disk 0, but there was previously |
| 1520 | * no actual corresponding configured logical drive |
| 1521 | * (raid_leve == -1) then we want to update the |
| 1522 | * logical drive's information. |
| 1523 | */ |
| 1524 | if (drv_index || first_time) |
| 1525 | cciss_add_disk(h, disk, drv_index); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1526 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1527 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1528 | kfree(inq_buff); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1529 | kfree(drvinfo); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1530 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1531 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1532 | printk(KERN_ERR "cciss: out of memory\n"); |
| 1533 | goto freeret; |
| 1534 | } |
| 1535 | |
| 1536 | /* This function will find the first index of the controllers drive array |
| 1537 | * that has a -1 for the raid_level and will return that index. This is |
| 1538 | * where new drives will be added. If the index to be returned is greater |
| 1539 | * than the highest_lun index for the controller then highest_lun is set |
| 1540 | * to this new index. If there are no available indexes then -1 is returned. |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1541 | * "controller_node" is used to know if this is a real logical drive, or just |
| 1542 | * the controller node, which determines if this counts towards highest_lun. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1543 | */ |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1544 | static int cciss_find_free_drive_index(int ctlr, int controller_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1546 | int i; |
| 1547 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1548 | for (i = 0; i < CISS_MAX_LUN; i++) { |
| 1549 | if (hba[ctlr]->drv[i].raid_level == -1) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1550 | if (i > hba[ctlr]->highest_lun) |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1551 | if (!controller_node) |
| 1552 | hba[ctlr]->highest_lun = i; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1553 | return i; |
| 1554 | } |
| 1555 | } |
| 1556 | return -1; |
| 1557 | } |
| 1558 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1559 | /* cciss_add_gendisk finds a free hba[]->drv structure |
| 1560 | * and allocates a gendisk if needed, and sets the lunid |
| 1561 | * in the drvinfo structure. It returns the index into |
| 1562 | * the ->drv[] array, or -1 if none are free. |
| 1563 | * is_controller_node indicates whether highest_lun should |
| 1564 | * count this disk, or if it's only being added to provide |
| 1565 | * a means to talk to the controller in case no logical |
| 1566 | * drives have yet been configured. |
| 1567 | */ |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1568 | static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1569 | { |
| 1570 | int drv_index; |
| 1571 | |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1572 | drv_index = cciss_find_free_drive_index(h->ctlr, controller_node); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1573 | if (drv_index == -1) |
| 1574 | return -1; |
| 1575 | /*Check if the gendisk needs to be allocated */ |
| 1576 | if (!h->gendisk[drv_index]) { |
| 1577 | h->gendisk[drv_index] = |
| 1578 | alloc_disk(1 << NWD_SHIFT); |
| 1579 | if (!h->gendisk[drv_index]) { |
| 1580 | printk(KERN_ERR "cciss%d: could not " |
| 1581 | "allocate a new disk %d\n", |
| 1582 | h->ctlr, drv_index); |
| 1583 | return -1; |
| 1584 | } |
| 1585 | } |
| 1586 | h->drv[drv_index].LunID = lunid; |
| 1587 | |
| 1588 | /* Don't need to mark this busy because nobody */ |
| 1589 | /* else knows about this disk yet to contend */ |
| 1590 | /* for access to it. */ |
| 1591 | h->drv[drv_index].busy_configuring = 0; |
| 1592 | wmb(); |
| 1593 | return drv_index; |
| 1594 | } |
| 1595 | |
| 1596 | /* This is for the special case of a controller which |
| 1597 | * has no logical drives. In this case, we still need |
| 1598 | * to register a disk so the controller can be accessed |
| 1599 | * by the Array Config Utility. |
| 1600 | */ |
| 1601 | static void cciss_add_controller_node(ctlr_info_t *h) |
| 1602 | { |
| 1603 | struct gendisk *disk; |
| 1604 | int drv_index; |
| 1605 | |
| 1606 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ |
| 1607 | return; |
| 1608 | |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1609 | drv_index = cciss_add_gendisk(h, 0, 1); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1610 | if (drv_index == -1) { |
| 1611 | printk(KERN_WARNING "cciss%d: could not " |
| 1612 | "add disk 0.\n", h->ctlr); |
| 1613 | return; |
| 1614 | } |
| 1615 | h->drv[drv_index].block_size = 512; |
| 1616 | h->drv[drv_index].nr_blocks = 0; |
| 1617 | h->drv[drv_index].heads = 0; |
| 1618 | h->drv[drv_index].sectors = 0; |
| 1619 | h->drv[drv_index].cylinders = 0; |
| 1620 | h->drv[drv_index].raid_level = -1; |
| 1621 | memset(h->drv[drv_index].serial_no, 0, 16); |
| 1622 | disk = h->gendisk[drv_index]; |
| 1623 | cciss_add_disk(h, disk, drv_index); |
| 1624 | } |
| 1625 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1626 | /* This function will add and remove logical drives from the Logical |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 1627 | * drive array of the controller and maintain persistency of ordering |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1628 | * so that mount points are preserved until the next reboot. This allows |
| 1629 | * for the removal of logical drives in the middle of the drive array |
| 1630 | * without a re-ordering of those drives. |
| 1631 | * INPUT |
| 1632 | * h = The controller to perform the operations on |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1633 | */ |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1634 | static int rebuild_lun_table(ctlr_info_t *h, int first_time) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1635 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | int ctlr = h->ctlr; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1637 | int num_luns; |
| 1638 | ReportLunData_struct *ld_buff = NULL; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1639 | int return_code; |
| 1640 | int listlength = 0; |
| 1641 | int i; |
| 1642 | int drv_found; |
| 1643 | int drv_index = 0; |
| 1644 | __u32 lunid = 0; |
| 1645 | unsigned long flags; |
| 1646 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1647 | if (!capable(CAP_SYS_RAWIO)) |
| 1648 | return -EPERM; |
| 1649 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1650 | /* Set busy_configuring flag for this operation */ |
| 1651 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1652 | if (h->busy_configuring) { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1653 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1654 | return -EBUSY; |
| 1655 | } |
| 1656 | h->busy_configuring = 1; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1657 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1658 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1659 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 1660 | if (ld_buff == NULL) |
| 1661 | goto mem_msg; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1662 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1663 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, |
| 1664 | sizeof(ReportLunData_struct), 0, |
| 1665 | 0, 0, TYPE_CMD); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1666 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1667 | if (return_code == IO_OK) |
| 1668 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
| 1669 | else { /* reading number of logical volumes failed */ |
| 1670 | printk(KERN_WARNING "cciss: report logical volume" |
| 1671 | " command failed\n"); |
| 1672 | listlength = 0; |
| 1673 | goto freeret; |
| 1674 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1675 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1676 | num_luns = listlength / 8; /* 8 bytes per entry */ |
| 1677 | if (num_luns > CISS_MAX_LUN) { |
| 1678 | num_luns = CISS_MAX_LUN; |
| 1679 | printk(KERN_WARNING "cciss: more luns configured" |
| 1680 | " on controller than can be handled by" |
| 1681 | " this driver.\n"); |
| 1682 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1683 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1684 | if (num_luns == 0) |
| 1685 | cciss_add_controller_node(h); |
| 1686 | |
| 1687 | /* Compare controller drive array to driver's drive array |
| 1688 | * to see if any drives are missing on the controller due |
| 1689 | * to action of Array Config Utility (user deletes drive) |
| 1690 | * and deregister logical drives which have disappeared. |
| 1691 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1692 | for (i = 0; i <= h->highest_lun; i++) { |
| 1693 | int j; |
| 1694 | drv_found = 0; |
| 1695 | for (j = 0; j < num_luns; j++) { |
| 1696 | memcpy(&lunid, &ld_buff->LUN[j][0], 4); |
| 1697 | lunid = le32_to_cpu(lunid); |
| 1698 | if (h->drv[i].LunID == lunid) { |
| 1699 | drv_found = 1; |
| 1700 | break; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1701 | } |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1702 | } |
| 1703 | if (!drv_found) { |
| 1704 | /* Deregister it from the OS, it's gone. */ |
| 1705 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
| 1706 | h->drv[i].busy_configuring = 1; |
| 1707 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 1708 | return_code = deregister_disk(h->gendisk[i], |
| 1709 | &h->drv[i], 1); |
| 1710 | h->drv[i].busy_configuring = 0; |
| 1711 | } |
| 1712 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1713 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1714 | /* Compare controller drive array to driver's drive array. |
| 1715 | * Check for updates in the drive information and any new drives |
| 1716 | * on the controller due to ACU adding logical drives, or changing |
| 1717 | * a logical drive's size, etc. Reregister any new/changed drives |
| 1718 | */ |
| 1719 | for (i = 0; i < num_luns; i++) { |
| 1720 | int j; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1721 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1722 | drv_found = 0; |
| 1723 | |
| 1724 | memcpy(&lunid, &ld_buff->LUN[i][0], 4); |
| 1725 | lunid = le32_to_cpu(lunid); |
| 1726 | |
| 1727 | /* Find if the LUN is already in the drive array |
| 1728 | * of the driver. If so then update its info |
| 1729 | * if not in use. If it does not exist then find |
| 1730 | * the first free index and add it. |
| 1731 | */ |
| 1732 | for (j = 0; j <= h->highest_lun; j++) { |
| 1733 | if (h->drv[j].raid_level != -1 && |
| 1734 | h->drv[j].LunID == lunid) { |
| 1735 | drv_index = j; |
| 1736 | drv_found = 1; |
| 1737 | break; |
| 1738 | } |
| 1739 | } |
| 1740 | |
| 1741 | /* check if the drive was found already in the array */ |
| 1742 | if (!drv_found) { |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 1743 | drv_index = cciss_add_gendisk(h, lunid, 0); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1744 | if (drv_index == -1) |
| 1745 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1746 | } |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1747 | cciss_update_drive_info(ctlr, drv_index, first_time); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1748 | } /* end for */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1749 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1750 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1751 | kfree(ld_buff); |
| 1752 | h->busy_configuring = 0; |
| 1753 | /* We return -1 here to tell the ACU that we have registered/updated |
| 1754 | * all of the drives that we can and to keep it from calling us |
| 1755 | * additional times. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1756 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1757 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1758 | mem_msg: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1759 | printk(KERN_ERR "cciss: out of memory\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1760 | h->busy_configuring = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1761 | goto freeret; |
| 1762 | } |
| 1763 | |
| 1764 | /* This function will deregister the disk and it's queue from the |
| 1765 | * kernel. It must be called with the controller lock held and the |
| 1766 | * drv structures busy_configuring flag set. It's parameters are: |
| 1767 | * |
| 1768 | * disk = This is the disk to be deregistered |
| 1769 | * drv = This is the drive_info_struct associated with the disk to be |
| 1770 | * deregistered. It contains information about the disk used |
| 1771 | * by the driver. |
| 1772 | * clear_all = This flag determines whether or not the disk information |
| 1773 | * is going to be completely cleared out and the highest_lun |
| 1774 | * reset. Sometimes we want to clear out information about |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 1775 | * the disk in preparation for re-adding it. In this case |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1776 | * the highest_lun should be left unchanged and the LunID |
| 1777 | * should not be cleared. |
| 1778 | */ |
| 1779 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, |
| 1780 | int clear_all) |
| 1781 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 1782 | int i; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1783 | ctlr_info_t *h = get_host(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | |
| 1785 | if (!capable(CAP_SYS_RAWIO)) |
| 1786 | return -EPERM; |
| 1787 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | /* make sure logical volume is NOT is use */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1789 | if (clear_all || (h->gendisk[0] == disk)) { |
| 1790 | if (drv->usage_count > 1) |
| 1791 | return -EBUSY; |
| 1792 | } else if (drv->usage_count > 0) |
| 1793 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1795 | /* invalidate the devices and deregister the disk. If it is disk |
| 1796 | * zero do not deregister it but just zero out it's values. This |
| 1797 | * allows us to delete disk zero but keep the controller registered. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1798 | */ |
| 1799 | if (h->gendisk[0] != disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 1800 | struct request_queue *q = disk->queue; |
| 1801 | if (disk->flags & GENHD_FL_UP) |
| 1802 | del_gendisk(disk); |
| 1803 | if (q) { |
| 1804 | blk_cleanup_queue(q); |
| 1805 | /* Set drv->queue to NULL so that we do not try |
| 1806 | * to call blk_start_queue on this queue in the |
| 1807 | * interrupt handler |
| 1808 | */ |
| 1809 | drv->queue = NULL; |
| 1810 | } |
| 1811 | /* If clear_all is set then we are deleting the logical |
| 1812 | * drive, not just refreshing its info. For drives |
| 1813 | * other than disk 0 we will call put_disk. We do not |
| 1814 | * do this for disk 0 as we need it to be able to |
| 1815 | * configure the controller. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1816 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 1817 | if (clear_all){ |
| 1818 | /* This isn't pretty, but we need to find the |
| 1819 | * disk in our array and NULL our the pointer. |
| 1820 | * This is so that we will call alloc_disk if |
| 1821 | * this index is used again later. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1822 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 1823 | for (i=0; i < CISS_MAX_LUN; i++){ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1824 | if (h->gendisk[i] == disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 1825 | h->gendisk[i] = NULL; |
| 1826 | break; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 1827 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 1828 | } |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 1829 | put_disk(disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1830 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 1831 | } else { |
| 1832 | set_capacity(disk, 0); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1833 | } |
| 1834 | |
| 1835 | --h->num_luns; |
| 1836 | /* zero out the disk size info */ |
| 1837 | drv->nr_blocks = 0; |
| 1838 | drv->block_size = 0; |
| 1839 | drv->heads = 0; |
| 1840 | drv->sectors = 0; |
| 1841 | drv->cylinders = 0; |
| 1842 | drv->raid_level = -1; /* This can be used as a flag variable to |
| 1843 | * indicate that this element of the drive |
| 1844 | * array is free. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1845 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1846 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1847 | if (clear_all) { |
| 1848 | /* check to see if it was the last disk */ |
| 1849 | if (drv == h->drv + h->highest_lun) { |
| 1850 | /* if so, find the new hightest lun */ |
| 1851 | int i, newhighest = -1; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1852 | for (i = 0; i <= h->highest_lun; i++) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1853 | /* if the disk has size > 0, it is available */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1854 | if (h->drv[i].heads) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1855 | newhighest = i; |
| 1856 | } |
| 1857 | h->highest_lun = newhighest; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1859 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1860 | drv->LunID = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1861 | } |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 1862 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1864 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1865 | 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, |
| 1866 | 1: address logical volume log_unit, |
| 1867 | 2: periph device address is scsi3addr */ |
| 1868 | unsigned int log_unit, __u8 page_code, |
| 1869 | unsigned char *scsi3addr, int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1871 | ctlr_info_t *h = hba[ctlr]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | u64bit buff_dma_handle; |
| 1873 | int status = IO_OK; |
| 1874 | |
| 1875 | c->cmd_type = CMD_IOCTL_PEND; |
| 1876 | c->Header.ReplyQueue = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1877 | if (buff != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | c->Header.SGList = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1879 | c->Header.SGTotal = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1880 | } else { |
| 1881 | c->Header.SGList = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1882 | c->Header.SGTotal = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | } |
| 1884 | c->Header.Tag.lower = c->busaddr; |
| 1885 | |
| 1886 | c->Request.Type.Type = cmd_type; |
| 1887 | if (cmd_type == TYPE_CMD) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1888 | switch (cmd) { |
| 1889 | case CISS_INQUIRY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | /* If the logical unit number is 0 then, this is going |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1891 | to controller so It's a physical command |
| 1892 | mode = 0 target = 0. So we have nothing to write. |
| 1893 | otherwise, if use_unit_num == 1, |
| 1894 | mode = 1(volume set addressing) target = LUNID |
| 1895 | otherwise, if use_unit_num == 2, |
| 1896 | mode = 0(periph dev addr) target = scsi3addr */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | if (use_unit_num == 1) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1898 | c->Header.LUN.LogDev.VolId = |
| 1899 | h->drv[log_unit].LunID; |
| 1900 | c->Header.LUN.LogDev.Mode = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | } else if (use_unit_num == 2) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1902 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, |
| 1903 | 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | c->Header.LUN.LogDev.Mode = 0; |
| 1905 | } |
| 1906 | /* are we trying to read a vital product page */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1907 | if (page_code != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | c->Request.CDB[1] = 0x01; |
| 1909 | c->Request.CDB[2] = page_code; |
| 1910 | } |
| 1911 | c->Request.CDBLen = 6; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1912 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | c->Request.Type.Direction = XFER_READ; |
| 1914 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1915 | c->Request.CDB[0] = CISS_INQUIRY; |
| 1916 | c->Request.CDB[4] = size & 0xFF; |
| 1917 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | case CISS_REPORT_LOG: |
| 1919 | case CISS_REPORT_PHYS: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1920 | /* Talking to controller so It's a physical command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | mode = 00 target = 0. Nothing to write. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1922 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | c->Request.CDBLen = 12; |
| 1924 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1925 | c->Request.Type.Direction = XFER_READ; |
| 1926 | c->Request.Timeout = 0; |
| 1927 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1928 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 1930 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 1931 | c->Request.CDB[9] = size & 0xFF; |
| 1932 | break; |
| 1933 | |
| 1934 | case CCISS_READ_CAPACITY: |
| 1935 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; |
| 1936 | c->Header.LUN.LogDev.Mode = 1; |
| 1937 | c->Request.CDBLen = 10; |
| 1938 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1939 | c->Request.Type.Direction = XFER_READ; |
| 1940 | c->Request.Timeout = 0; |
| 1941 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1942 | break; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1943 | case CCISS_READ_CAPACITY_16: |
| 1944 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; |
| 1945 | c->Header.LUN.LogDev.Mode = 1; |
| 1946 | c->Request.CDBLen = 16; |
| 1947 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1948 | c->Request.Type.Direction = XFER_READ; |
| 1949 | c->Request.Timeout = 0; |
| 1950 | c->Request.CDB[0] = cmd; |
| 1951 | c->Request.CDB[1] = 0x10; |
| 1952 | c->Request.CDB[10] = (size >> 24) & 0xFF; |
| 1953 | c->Request.CDB[11] = (size >> 16) & 0xFF; |
| 1954 | c->Request.CDB[12] = (size >> 8) & 0xFF; |
| 1955 | c->Request.CDB[13] = size & 0xFF; |
| 1956 | c->Request.Timeout = 0; |
| 1957 | c->Request.CDB[0] = cmd; |
| 1958 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | case CCISS_CACHE_FLUSH: |
| 1960 | c->Request.CDBLen = 12; |
| 1961 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1962 | c->Request.Type.Direction = XFER_WRITE; |
| 1963 | c->Request.Timeout = 0; |
| 1964 | c->Request.CDB[0] = BMIC_WRITE; |
| 1965 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1966 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | default: |
| 1968 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1969 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 1970 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | } |
| 1972 | } else if (cmd_type == TYPE_MSG) { |
| 1973 | switch (cmd) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1974 | case 0: /* ABORT message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1975 | c->Request.CDBLen = 12; |
| 1976 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1977 | c->Request.Type.Direction = XFER_WRITE; |
| 1978 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1979 | c->Request.CDB[0] = cmd; /* abort */ |
| 1980 | c->Request.CDB[1] = 0; /* abort a command */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1981 | /* buff contains the tag of the command to abort */ |
| 1982 | memcpy(&c->Request.CDB[4], buff, 8); |
| 1983 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1984 | case 1: /* RESET message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 1985 | c->Request.CDBLen = 12; |
| 1986 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1987 | c->Request.Type.Direction = XFER_WRITE; |
| 1988 | c->Request.Timeout = 0; |
| 1989 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1990 | c->Request.CDB[0] = cmd; /* reset */ |
| 1991 | c->Request.CDB[1] = 0x04; /* reset a LUN */ |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1992 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | case 3: /* No-Op message */ |
| 1994 | c->Request.CDBLen = 1; |
| 1995 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 1996 | c->Request.Type.Direction = XFER_WRITE; |
| 1997 | c->Request.Timeout = 0; |
| 1998 | c->Request.CDB[0] = cmd; |
| 1999 | break; |
| 2000 | default: |
| 2001 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2002 | "cciss%d: unknown message type %d\n", ctlr, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2003 | return IO_ERROR; |
| 2004 | } |
| 2005 | } else { |
| 2006 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2007 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | return IO_ERROR; |
| 2009 | } |
| 2010 | /* Fill in the scatter gather information */ |
| 2011 | if (size > 0) { |
| 2012 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2013 | buff, size, |
| 2014 | PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2015 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 2016 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 2017 | c->SG[0].Len = size; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2018 | c->SG[0].Ext = 0; /* we are not chaining */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | } |
| 2020 | return status; |
| 2021 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2022 | |
| 2023 | static int sendcmd_withirq(__u8 cmd, |
| 2024 | int ctlr, |
| 2025 | void *buff, |
| 2026 | size_t size, |
| 2027 | unsigned int use_unit_num, |
| 2028 | unsigned int log_unit, __u8 page_code, int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | { |
| 2030 | ctlr_info_t *h = hba[ctlr]; |
| 2031 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2032 | u64bit buff_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2033 | unsigned long flags; |
| 2034 | int return_status; |
Peter Zijlstra | 6e9a473 | 2006-09-30 23:28:10 -0700 | [diff] [blame] | 2035 | DECLARE_COMPLETION_ONSTACK(wait); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2036 | |
| 2037 | if ((c = cmd_alloc(h, 0)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | return -ENOMEM; |
| 2039 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2040 | log_unit, page_code, NULL, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | if (return_status != IO_OK) { |
| 2042 | cmd_free(h, c, 0); |
| 2043 | return return_status; |
| 2044 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2045 | resend_cmd2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | c->waiting = &wait; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2047 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | /* Put the request on the tail of the queue and send it */ |
| 2049 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 2050 | addQ(&h->reqQ, c); |
| 2051 | h->Qdepth++; |
| 2052 | start_io(h); |
| 2053 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | wait_for_completion(&wait); |
| 2056 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2057 | if (c->err_info->CommandStatus != 0) { /* an error has occurred */ |
| 2058 | switch (c->err_info->CommandStatus) { |
| 2059 | case CMD_TARGET_STATUS: |
| 2060 | printk(KERN_WARNING "cciss: cmd %p has " |
| 2061 | " completed with errors\n", c); |
| 2062 | if (c->err_info->ScsiStatus) { |
| 2063 | printk(KERN_WARNING "cciss: cmd %p " |
| 2064 | "has SCSI Status = %x\n", |
| 2065 | c, c->err_info->ScsiStatus); |
| 2066 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | |
| 2068 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2069 | case CMD_DATA_UNDERRUN: |
| 2070 | case CMD_DATA_OVERRUN: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | /* expected for inquire and report lun commands */ |
| 2072 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2073 | case CMD_INVALID: |
| 2074 | printk(KERN_WARNING "cciss: Cmd %p is " |
| 2075 | "reported invalid\n", c); |
| 2076 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2078 | case CMD_PROTOCOL_ERR: |
| 2079 | printk(KERN_WARNING "cciss: cmd %p has " |
| 2080 | "protocol error \n", c); |
| 2081 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2083 | case CMD_HARDWARE_ERR: |
| 2084 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2085 | " hardware error\n", c); |
| 2086 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2088 | case CMD_CONNECTION_LOST: |
| 2089 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2090 | "connection lost\n", c); |
| 2091 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2092 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2093 | case CMD_ABORTED: |
| 2094 | printk(KERN_WARNING "cciss: cmd %p was " |
| 2095 | "aborted\n", c); |
| 2096 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2098 | case CMD_ABORT_FAILED: |
| 2099 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 2100 | "abort failed\n", c); |
| 2101 | return_status = IO_ERROR; |
| 2102 | break; |
| 2103 | case CMD_UNSOLICITED_ABORT: |
| 2104 | printk(KERN_WARNING |
| 2105 | "cciss%d: unsolicited abort %p\n", ctlr, c); |
| 2106 | if (c->retry_count < MAX_CMD_RETRIES) { |
| 2107 | printk(KERN_WARNING |
| 2108 | "cciss%d: retrying %p\n", ctlr, c); |
| 2109 | c->retry_count++; |
| 2110 | /* erase the old error information */ |
| 2111 | memset(c->err_info, 0, |
| 2112 | sizeof(ErrorInfo_struct)); |
| 2113 | return_status = IO_OK; |
| 2114 | INIT_COMPLETION(wait); |
| 2115 | goto resend_cmd2; |
| 2116 | } |
| 2117 | return_status = IO_ERROR; |
| 2118 | break; |
| 2119 | default: |
| 2120 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 2121 | "unknown status %x\n", c, |
| 2122 | c->err_info->CommandStatus); |
| 2123 | return_status = IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2125 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | /* unlock the buffers from DMA */ |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 2127 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2128 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2129 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
| 2130 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | cmd_free(h, c, 0); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2132 | return return_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2134 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | static void cciss_geometry_inquiry(int ctlr, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2136 | int withirq, sector_t total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2137 | unsigned int block_size, |
| 2138 | InquiryData_struct *inq_buff, |
| 2139 | drive_info_struct *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | { |
| 2141 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2142 | unsigned long t; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
| 2145 | if (withirq) |
| 2146 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2147 | inq_buff, sizeof(*inq_buff), 1, |
| 2148 | logvol, 0xC1, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | else |
| 2150 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2151 | sizeof(*inq_buff), 1, logvol, 0xC1, NULL, |
| 2152 | TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | if (return_code == IO_OK) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2154 | if (inq_buff->data_byte[8] == 0xFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2155 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2156 | "cciss: reading geometry failed, volume " |
| 2157 | "does not support reading geometry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2158 | drv->heads = 255; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2159 | drv->sectors = 32; // Sectors per track |
Mike Miller (OS Dev) | 7f42d3b | 2007-04-04 19:08:23 -0700 | [diff] [blame] | 2160 | drv->cylinders = total_size + 1; |
Mike Miller | 89f97ad | 2006-12-18 10:59:39 +0100 | [diff] [blame] | 2161 | drv->raid_level = RAID_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | drv->heads = inq_buff->data_byte[6]; |
| 2164 | drv->sectors = inq_buff->data_byte[7]; |
| 2165 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 2166 | drv->cylinders += inq_buff->data_byte[5]; |
| 2167 | drv->raid_level = inq_buff->data_byte[8]; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2168 | } |
| 2169 | drv->block_size = block_size; |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2170 | drv->nr_blocks = total_size + 1; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2171 | t = drv->heads * drv->sectors; |
| 2172 | if (t > 1) { |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2173 | sector_t real_size = total_size + 1; |
| 2174 | unsigned long rem = sector_div(real_size, t); |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2175 | if (rem) |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2176 | real_size++; |
| 2177 | drv->cylinders = real_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2179 | } else { /* Get geometry failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | printk(KERN_WARNING "cciss: reading geometry failed\n"); |
| 2181 | } |
Metathronius Galabant | cc088d1 | 2006-09-30 23:27:47 -0700 | [diff] [blame] | 2182 | printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2183 | drv->heads, drv->sectors, drv->cylinders); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | static void |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2187 | cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2188 | unsigned int *block_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2190 | ReadCapdata_struct *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | int return_code; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2192 | |
| 2193 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
| 2194 | if (!buf) { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2195 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 2196 | return; |
| 2197 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | if (withirq) |
| 2200 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2201 | ctlr, buf, sizeof(ReadCapdata_struct), |
| 2202 | 1, logvol, 0, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | else |
| 2204 | return_code = sendcmd(CCISS_READ_CAPACITY, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2205 | ctlr, buf, sizeof(ReadCapdata_struct), |
| 2206 | 1, logvol, 0, NULL, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b3 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2208 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
| 2209 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2210 | } else { /* read capacity command failed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 2212 | *total_size = 0; |
| 2213 | *block_size = BLOCK_SIZE; |
| 2214 | } |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2215 | if (*total_size != 0) |
Randy Dunlap | 7b92aad | 2006-10-28 10:38:40 -0700 | [diff] [blame] | 2216 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2217 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2218 | kfree(buf); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2219 | } |
| 2220 | |
| 2221 | static void |
| 2222 | cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size) |
| 2223 | { |
| 2224 | ReadCapdata_struct_16 *buf; |
| 2225 | int return_code; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2226 | |
| 2227 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); |
| 2228 | if (!buf) { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2229 | printk(KERN_WARNING "cciss: out of memory\n"); |
| 2230 | return; |
| 2231 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2232 | |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2233 | if (withirq) { |
| 2234 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16, |
| 2235 | ctlr, buf, sizeof(ReadCapdata_struct_16), |
| 2236 | 1, logvol, 0, TYPE_CMD); |
| 2237 | } |
| 2238 | else { |
| 2239 | return_code = sendcmd(CCISS_READ_CAPACITY_16, |
| 2240 | ctlr, buf, sizeof(ReadCapdata_struct_16), |
| 2241 | 1, logvol, 0, NULL, TYPE_CMD); |
| 2242 | } |
| 2243 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b3 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2244 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
| 2245 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2246 | } else { /* read capacity command failed */ |
| 2247 | printk(KERN_WARNING "cciss: read capacity failed\n"); |
| 2248 | *total_size = 0; |
| 2249 | *block_size = BLOCK_SIZE; |
| 2250 | } |
Randy Dunlap | 7b92aad | 2006-10-28 10:38:40 -0700 | [diff] [blame] | 2251 | printk(KERN_INFO " blocks= %llu block_size= %d\n", |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2252 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2253 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | } |
| 2255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | static int cciss_revalidate(struct gendisk *disk) |
| 2257 | { |
| 2258 | ctlr_info_t *h = get_host(disk); |
| 2259 | drive_info_struct *drv = get_drv(disk); |
| 2260 | int logvol; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2261 | int FOUND = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2262 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2263 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | InquiryData_struct *inq_buff = NULL; |
| 2265 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2266 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
| 2267 | if (h->drv[logvol].LunID == drv->LunID) { |
| 2268 | FOUND = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | break; |
| 2270 | } |
| 2271 | } |
| 2272 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2273 | if (!FOUND) |
| 2274 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2276 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 2277 | if (inq_buff == NULL) { |
| 2278 | printk(KERN_WARNING "cciss: out of memory\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2279 | return 1; |
| 2280 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2281 | if (h->cciss_read == CCISS_READ_10) { |
| 2282 | cciss_read_capacity(h->ctlr, logvol, 1, |
| 2283 | &total_size, &block_size); |
| 2284 | } else { |
| 2285 | cciss_read_capacity_16(h->ctlr, logvol, 1, |
| 2286 | &total_size, &block_size); |
| 2287 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2288 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, |
| 2289 | inq_buff, drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2290 | |
Mike Miller | ad2b931 | 2005-07-28 01:07:31 -0700 | [diff] [blame] | 2291 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | set_capacity(disk, drv->nr_blocks); |
| 2293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | kfree(inq_buff); |
| 2295 | return 0; |
| 2296 | } |
| 2297 | |
| 2298 | /* |
| 2299 | * Wait polling for a command to complete. |
| 2300 | * The memory mapped FIFO is polled for the completion. |
| 2301 | * Used only at init time, interrupts from the HBA are disabled. |
| 2302 | */ |
| 2303 | static unsigned long pollcomplete(int ctlr) |
| 2304 | { |
| 2305 | unsigned long done; |
| 2306 | int i; |
| 2307 | |
| 2308 | /* Wait (up to 20 seconds) for a command to complete */ |
| 2309 | |
| 2310 | for (i = 20 * HZ; i > 0; i--) { |
| 2311 | done = hba[ctlr]->access.command_completed(hba[ctlr]); |
Nishanth Aravamudan | 86e8486 | 2005-09-10 00:27:28 -0700 | [diff] [blame] | 2312 | if (done == FIFO_EMPTY) |
| 2313 | schedule_timeout_uninterruptible(1); |
| 2314 | else |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2315 | return done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | } |
| 2317 | /* Invalid address to tell caller we ran out of time */ |
| 2318 | return 1; |
| 2319 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2320 | |
| 2321 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) |
| 2322 | { |
| 2323 | /* We get in here if sendcmd() is polling for completions |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2324 | and gets some command back that it wasn't expecting -- |
| 2325 | something other than that which it just sent down. |
| 2326 | Ordinarily, that shouldn't happen, but it can happen when |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2327 | the scsi tape stuff gets into error handling mode, and |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2328 | starts using sendcmd() to try to abort commands and |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2329 | reset tape drives. In that case, sendcmd may pick up |
| 2330 | completions of commands that were sent to logical drives |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2331 | through the block i/o system, or cciss ioctls completing, etc. |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2332 | In that case, we need to save those completions for later |
| 2333 | processing by the interrupt handler. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2334 | */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2335 | |
| 2336 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2337 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2338 | |
| 2339 | /* If it's not the scsi tape stuff doing error handling, (abort */ |
| 2340 | /* or reset) then we don't expect anything weird. */ |
| 2341 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { |
| 2342 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2343 | printk(KERN_WARNING "cciss cciss%d: SendCmd " |
| 2344 | "Invalid command list address returned! (%lx)\n", |
| 2345 | ctlr, complete); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2346 | /* not much we can do. */ |
| 2347 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2348 | return 1; |
| 2349 | } |
| 2350 | |
| 2351 | /* We've sent down an abort or reset, but something else |
| 2352 | has completed */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 2353 | if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2354 | /* Uh oh. No room to save it for later... */ |
| 2355 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2356 | "reject list overflow, command lost!\n", ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2357 | return 1; |
| 2358 | } |
| 2359 | /* Save it for later */ |
| 2360 | srl->complete[srl->ncompletions] = complete; |
| 2361 | srl->ncompletions++; |
| 2362 | #endif |
| 2363 | return 0; |
| 2364 | } |
| 2365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2367 | * Send a command to the controller, and wait for it to complete. |
| 2368 | * Only used at init time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2370 | static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller, |
| 2371 | 1: address logical volume log_unit, |
| 2372 | 2: periph device address is scsi3addr */ |
| 2373 | unsigned int log_unit, |
| 2374 | __u8 page_code, unsigned char *scsi3addr, int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | { |
| 2376 | CommandList_struct *c; |
| 2377 | int i; |
| 2378 | unsigned long complete; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2379 | ctlr_info_t *info_p = hba[ctlr]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | u64bit buff_dma_handle; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2381 | int status, done = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | |
| 2383 | if ((c = cmd_alloc(info_p, 1)) == NULL) { |
| 2384 | printk(KERN_WARNING "cciss: unable to get memory"); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2385 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | } |
| 2387 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2388 | log_unit, page_code, scsi3addr, cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | if (status != IO_OK) { |
| 2390 | cmd_free(info_p, c, 1); |
| 2391 | return status; |
| 2392 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2393 | resend_cmd1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | /* |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2395 | * Disable interrupt |
| 2396 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | #ifdef CCISS_DEBUG |
| 2398 | printk(KERN_DEBUG "cciss: turning intr off\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2399 | #endif /* CCISS_DEBUG */ |
| 2400 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); |
| 2401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | /* Make sure there is room in the command FIFO */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2403 | /* Actually it should be completely empty at this time */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2404 | /* unless we are in here doing error handling for the scsi */ |
| 2405 | /* tape side of the driver. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2406 | for (i = 200000; i > 0; i--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | /* if fifo isn't full go */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2408 | if (!(info_p->access.fifo_full(info_p))) { |
| 2409 | |
| 2410 | break; |
| 2411 | } |
| 2412 | udelay(10); |
| 2413 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," |
| 2414 | " waiting!\n", ctlr); |
| 2415 | } |
| 2416 | /* |
| 2417 | * Send the cmd |
| 2418 | */ |
| 2419 | info_p->access.submit_command(info_p, c); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2420 | done = 0; |
| 2421 | do { |
| 2422 | complete = pollcomplete(ctlr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2423 | |
| 2424 | #ifdef CCISS_DEBUG |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2425 | printk(KERN_DEBUG "cciss: command completed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2426 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2427 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2428 | if (complete == 1) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2429 | printk(KERN_WARNING |
| 2430 | "cciss cciss%d: SendCmd Timeout out, " |
| 2431 | "No command list address returned!\n", ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2432 | status = IO_ERROR; |
| 2433 | done = 1; |
| 2434 | break; |
| 2435 | } |
| 2436 | |
| 2437 | /* This will need to change for direct lookup completions */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2438 | if ((complete & CISS_ERROR_BIT) |
| 2439 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) { |
| 2440 | /* if data overrun or underun on Report command |
| 2441 | ignore it |
| 2442 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || |
| 2444 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || |
| 2445 | (c->Request.CDB[0] == CISS_INQUIRY)) && |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2446 | ((c->err_info->CommandStatus == |
| 2447 | CMD_DATA_OVERRUN) || |
| 2448 | (c->err_info->CommandStatus == CMD_DATA_UNDERRUN) |
| 2449 | )) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | complete = c->busaddr; |
| 2451 | } else { |
| 2452 | if (c->err_info->CommandStatus == |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2453 | CMD_UNSOLICITED_ABORT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | printk(KERN_WARNING "cciss%d: " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2455 | "unsolicited abort %p\n", |
| 2456 | ctlr, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | if (c->retry_count < MAX_CMD_RETRIES) { |
| 2458 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2459 | "cciss%d: retrying %p\n", |
| 2460 | ctlr, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2461 | c->retry_count++; |
| 2462 | /* erase the old error */ |
| 2463 | /* information */ |
| 2464 | memset(c->err_info, 0, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2465 | sizeof |
| 2466 | (ErrorInfo_struct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2467 | goto resend_cmd1; |
| 2468 | } else { |
| 2469 | printk(KERN_WARNING |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2470 | "cciss%d: retried %p too " |
| 2471 | "many times\n", ctlr, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | status = IO_ERROR; |
| 2473 | goto cleanup1; |
| 2474 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2475 | } else if (c->err_info->CommandStatus == |
| 2476 | CMD_UNABORTABLE) { |
| 2477 | printk(KERN_WARNING |
| 2478 | "cciss%d: command could not be aborted.\n", |
| 2479 | ctlr); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2480 | status = IO_ERROR; |
| 2481 | goto cleanup1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2482 | } |
| 2483 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2484 | " Error %x \n", ctlr, |
| 2485 | c->err_info->CommandStatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2486 | printk(KERN_WARNING "ciss ciss%d: sendcmd" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2487 | " offensive info\n" |
| 2488 | " size %x\n num %x value %x\n", |
| 2489 | ctlr, |
| 2490 | c->err_info->MoreErrInfo.Invalid_Cmd. |
| 2491 | offense_size, |
| 2492 | c->err_info->MoreErrInfo.Invalid_Cmd. |
| 2493 | offense_num, |
| 2494 | c->err_info->MoreErrInfo.Invalid_Cmd. |
| 2495 | offense_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2496 | status = IO_ERROR; |
| 2497 | goto cleanup1; |
| 2498 | } |
| 2499 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2500 | /* This will need changing for direct lookup completions */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2501 | if (complete != c->busaddr) { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2502 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2503 | BUG(); /* we are pretty much hosed if we get here. */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2504 | } |
| 2505 | continue; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2506 | } else |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2507 | done = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2508 | } while (!done); |
| 2509 | |
| 2510 | cleanup1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2511 | /* unlock the data buffer from DMA */ |
Mike Miller | bb2a37b | 2005-09-13 01:25:24 -0700 | [diff] [blame] | 2512 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2513 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2514 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2515 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2516 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2517 | /* if we saved some commands for later, process them now. */ |
| 2518 | if (info_p->scsi_rejects.ncompletions > 0) |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2519 | do_cciss_intr(0, info_p); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2520 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2521 | cmd_free(info_p, c, 1); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2522 | return status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2523 | } |
| 2524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2525 | /* |
| 2526 | * Map (physical) PCI mem into (virtual) kernel space |
| 2527 | */ |
| 2528 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2529 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2530 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2531 | ulong page_offs = ((ulong) base) - page_base; |
| 2532 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2533 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2534 | return page_remapped ? (page_remapped + page_offs) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2535 | } |
| 2536 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2537 | /* |
| 2538 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 2539 | * the Q to wait for completion. |
| 2540 | */ |
| 2541 | static void start_io(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | { |
| 2543 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2544 | |
| 2545 | while ((c = h->reqQ) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | /* can't do anything if fifo is full */ |
| 2547 | if ((h->access.fifo_full(h))) { |
| 2548 | printk(KERN_WARNING "cciss: fifo full\n"); |
| 2549 | break; |
| 2550 | } |
| 2551 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2552 | /* Get the first entry from the Request Q */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | removeQ(&(h->reqQ), c); |
| 2554 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2555 | |
| 2556 | /* Tell the controller execute command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2557 | h->access.submit_command(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2558 | |
| 2559 | /* Put job onto the completed Q */ |
| 2560 | addQ(&(h->cmpQ), c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | } |
| 2562 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2563 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2564 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ |
| 2565 | /* Zeros out the error record and then resends the command back */ |
| 2566 | /* to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2567 | static inline void resend_cciss_cmd(ctlr_info_t *h, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | { |
| 2569 | /* erase the old error information */ |
| 2570 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2571 | |
| 2572 | /* add it to software queue and then send it to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2573 | addQ(&(h->reqQ), c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2575 | if (h->Qdepth > h->maxQsinceinit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | h->maxQsinceinit = h->Qdepth; |
| 2577 | |
| 2578 | start_io(h); |
| 2579 | } |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2580 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2581 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
| 2582 | unsigned int msg_byte, unsigned int host_byte, |
| 2583 | unsigned int driver_byte) |
| 2584 | { |
| 2585 | /* inverse of macros in scsi.h */ |
| 2586 | return (scsi_status_byte & 0xff) | |
| 2587 | ((msg_byte & 0xff) << 8) | |
| 2588 | ((host_byte & 0xff) << 16) | |
| 2589 | ((driver_byte & 0xff) << 24); |
| 2590 | } |
| 2591 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2592 | static inline int evaluate_target_status(CommandList_struct *cmd) |
| 2593 | { |
| 2594 | unsigned char sense_key; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2595 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
| 2596 | int error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2597 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2598 | /* If we get in here, it means we got "target status", that is, scsi status */ |
| 2599 | status_byte = cmd->err_info->ScsiStatus; |
| 2600 | driver_byte = DRIVER_OK; |
| 2601 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ |
| 2602 | |
| 2603 | if (blk_pc_request(cmd->rq)) |
| 2604 | host_byte = DID_PASSTHROUGH; |
| 2605 | else |
| 2606 | host_byte = DID_OK; |
| 2607 | |
| 2608 | error_value = make_status_bytes(status_byte, msg_byte, |
| 2609 | host_byte, driver_byte); |
| 2610 | |
| 2611 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2612 | if (!blk_pc_request(cmd->rq)) |
| 2613 | printk(KERN_WARNING "cciss: cmd %p " |
| 2614 | "has SCSI Status 0x%x\n", |
| 2615 | cmd, cmd->err_info->ScsiStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2616 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2617 | } |
| 2618 | |
| 2619 | /* check the sense key */ |
| 2620 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; |
| 2621 | /* no status or recovered error */ |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2622 | if (((sense_key == 0x0) || (sense_key == 0x1)) && !blk_pc_request(cmd->rq)) |
| 2623 | error_value = 0; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2624 | |
| 2625 | if (!blk_pc_request(cmd->rq)) { /* Not SG_IO or similar? */ |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2626 | if (error_value != 0) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2627 | printk(KERN_WARNING "cciss: cmd %p has CHECK CONDITION" |
| 2628 | " sense key = 0x%x\n", cmd, sense_key); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2629 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2630 | } |
| 2631 | |
| 2632 | /* SG_IO or similar, copy sense data back */ |
| 2633 | if (cmd->rq->sense) { |
| 2634 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) |
| 2635 | cmd->rq->sense_len = cmd->err_info->SenseLen; |
| 2636 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, |
| 2637 | cmd->rq->sense_len); |
| 2638 | } else |
| 2639 | cmd->rq->sense_len = 0; |
| 2640 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2641 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2642 | } |
| 2643 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2644 | /* checks the status of the job and calls complete buffers to mark all |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2645 | * buffers for the completed job. Note that this function does not need |
| 2646 | * to hold the hba/queue lock. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2647 | */ |
| 2648 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, |
| 2649 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2651 | int retry_cmd = 0; |
Mike Miller (OS Dev) | 198b766 | 2007-05-08 00:29:34 -0700 | [diff] [blame] | 2652 | struct request *rq = cmd->rq; |
| 2653 | |
| 2654 | rq->errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2655 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2656 | if (timeout) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2657 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2658 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2659 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
| 2660 | goto after_error_processing; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2661 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2662 | switch (cmd->err_info->CommandStatus) { |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2663 | case CMD_TARGET_STATUS: |
Mike Miller (OS Dev) | 198b766 | 2007-05-08 00:29:34 -0700 | [diff] [blame] | 2664 | rq->errors = evaluate_target_status(cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2665 | break; |
| 2666 | case CMD_DATA_UNDERRUN: |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2667 | if (blk_fs_request(cmd->rq)) { |
| 2668 | printk(KERN_WARNING "cciss: cmd %p has" |
| 2669 | " completed with data underrun " |
| 2670 | "reported\n", cmd); |
| 2671 | cmd->rq->data_len = cmd->err_info->ResidualCnt; |
| 2672 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2673 | break; |
| 2674 | case CMD_DATA_OVERRUN: |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2675 | if (blk_fs_request(cmd->rq)) |
| 2676 | printk(KERN_WARNING "cciss: cmd %p has" |
| 2677 | " completed with data overrun " |
| 2678 | "reported\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2679 | break; |
| 2680 | case CMD_INVALID: |
| 2681 | printk(KERN_WARNING "cciss: cmd %p is " |
| 2682 | "reported invalid\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2683 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2684 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2685 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2686 | break; |
| 2687 | case CMD_PROTOCOL_ERR: |
| 2688 | printk(KERN_WARNING "cciss: cmd %p has " |
| 2689 | "protocol error \n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2690 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2691 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2692 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2693 | break; |
| 2694 | case CMD_HARDWARE_ERR: |
| 2695 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2696 | " hardware error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2697 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2698 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2699 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2700 | break; |
| 2701 | case CMD_CONNECTION_LOST: |
| 2702 | printk(KERN_WARNING "cciss: cmd %p had " |
| 2703 | "connection lost\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2704 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2705 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2706 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2707 | break; |
| 2708 | case CMD_ABORTED: |
| 2709 | printk(KERN_WARNING "cciss: cmd %p was " |
| 2710 | "aborted\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2711 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2712 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2713 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2714 | break; |
| 2715 | case CMD_ABORT_FAILED: |
| 2716 | printk(KERN_WARNING "cciss: cmd %p reports " |
| 2717 | "abort failed\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2718 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2719 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2720 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2721 | break; |
| 2722 | case CMD_UNSOLICITED_ABORT: |
| 2723 | printk(KERN_WARNING "cciss%d: unsolicited " |
| 2724 | "abort %p\n", h->ctlr, cmd); |
| 2725 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 2726 | retry_cmd = 1; |
| 2727 | printk(KERN_WARNING |
| 2728 | "cciss%d: retrying %p\n", h->ctlr, cmd); |
| 2729 | cmd->retry_count++; |
| 2730 | } else |
| 2731 | printk(KERN_WARNING |
| 2732 | "cciss%d: %p retried too " |
| 2733 | "many times\n", h->ctlr, cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2734 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2735 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2736 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2737 | break; |
| 2738 | case CMD_TIMEOUT: |
| 2739 | printk(KERN_WARNING "cciss: cmd %p timedout\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2740 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2741 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2742 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2743 | break; |
| 2744 | default: |
| 2745 | printk(KERN_WARNING "cciss: cmd %p returned " |
| 2746 | "unknown status %x\n", cmd, |
| 2747 | cmd->err_info->CommandStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2748 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 2749 | cmd->err_info->CommandStatus, DRIVER_OK, |
| 2750 | blk_pc_request(cmd->rq) ? DID_PASSTHROUGH : DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 2752 | |
| 2753 | after_error_processing: |
| 2754 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | /* We need to return this command */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2756 | if (retry_cmd) { |
| 2757 | resend_cciss_cmd(h, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2759 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2760 | cmd->rq->completion_data = cmd; |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2761 | blk_complete_request(cmd->rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | } |
| 2763 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2764 | /* |
| 2765 | * Get a request and submit it to the controller. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2766 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2767 | static void do_cciss_request(struct request_queue *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2769 | ctlr_info_t *h = q->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2770 | CommandList_struct *c; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2771 | sector_t start_blk; |
| 2772 | int seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2773 | struct request *creq; |
| 2774 | u64bit temp64; |
| 2775 | struct scatterlist tmp_sg[MAXSGENTRIES]; |
| 2776 | drive_info_struct *drv; |
| 2777 | int i, dir; |
| 2778 | |
| 2779 | /* We call start_io here in case there is a command waiting on the |
| 2780 | * queue that has not been sent. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2781 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2782 | if (blk_queue_plugged(q)) |
| 2783 | goto startio; |
| 2784 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2785 | queue: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2786 | creq = elv_next_request(q); |
| 2787 | if (!creq) |
| 2788 | goto startio; |
| 2789 | |
Eric Sesterhenn | 089fe1b | 2006-03-24 18:50:27 +0100 | [diff] [blame] | 2790 | BUG_ON(creq->nr_phys_segments > MAXSGENTRIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2791 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2792 | if ((c = cmd_alloc(h, 1)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2793 | goto full; |
| 2794 | |
| 2795 | blkdev_dequeue_request(creq); |
| 2796 | |
| 2797 | spin_unlock_irq(q->queue_lock); |
| 2798 | |
| 2799 | c->cmd_type = CMD_RWREQ; |
| 2800 | c->rq = creq; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2801 | |
| 2802 | /* fill in the request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2803 | drv = creq->rq_disk->private_data; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2804 | c->Header.ReplyQueue = 0; // unused in simple mode |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2805 | /* got command from pool, so use the command block index instead */ |
| 2806 | /* for direct lookups. */ |
| 2807 | /* The first 2 bits are reserved for controller error reporting. */ |
| 2808 | c->Header.Tag.lower = (c->cmdindex << 3); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2809 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ |
| 2810 | c->Header.LUN.LogDev.VolId = drv->LunID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2811 | c->Header.LUN.LogDev.Mode = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2812 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; |
| 2813 | c->Request.Type.Type = TYPE_CMD; // It is a command. |
| 2814 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2815 | c->Request.Type.Direction = |
Mike Miller | a52de24 | 2006-12-18 11:00:14 +0100 | [diff] [blame] | 2816 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2817 | c->Request.Timeout = 0; // Don't time out |
| 2818 | c->Request.CDB[0] = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2819 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2820 | start_blk = creq->sector; |
| 2821 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2822 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector, |
| 2823 | (int)creq->nr_sectors); |
| 2824 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2825 | |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 2826 | sg_init_table(tmp_sg, MAXSGENTRIES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 2828 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2829 | /* get the DMA records for the setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2830 | if (c->Request.Type.Direction == XFER_READ) |
| 2831 | dir = PCI_DMA_FROMDEVICE; |
| 2832 | else |
| 2833 | dir = PCI_DMA_TODEVICE; |
| 2834 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2835 | for (i = 0; i < seg; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2836 | c->SG[i].Len = tmp_sg[i].length; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 2837 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2838 | tmp_sg[i].offset, |
| 2839 | tmp_sg[i].length, dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | c->SG[i].Addr.lower = temp64.val32.lower; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2841 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 2842 | c->SG[i].Ext = 0; // we are not chaining |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2843 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2844 | /* track how many SG entries we are using */ |
| 2845 | if (seg > h->maxSG) |
| 2846 | h->maxSG = seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2847 | |
| 2848 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2849 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", |
| 2850 | creq->nr_sectors, seg); |
| 2851 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2852 | |
| 2853 | c->Header.SGList = c->Header.SGTotal = seg; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2854 | if (likely(blk_fs_request(creq))) { |
| 2855 | if(h->cciss_read == CCISS_READ_10) { |
| 2856 | c->Request.CDB[1] = 0; |
| 2857 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB |
| 2858 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
| 2859 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; |
| 2860 | c->Request.CDB[5] = start_blk & 0xff; |
| 2861 | c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB |
| 2862 | c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff; |
| 2863 | c->Request.CDB[8] = creq->nr_sectors & 0xff; |
| 2864 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 2865 | } else { |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 2866 | u32 upper32 = upper_32_bits(start_blk); |
| 2867 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2868 | c->Request.CDBLen = 16; |
| 2869 | c->Request.CDB[1]= 0; |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 2870 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB |
| 2871 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
| 2872 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; |
| 2873 | c->Request.CDB[5]= upper32 & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2874 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
| 2875 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; |
| 2876 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; |
| 2877 | c->Request.CDB[9]= start_blk & 0xff; |
| 2878 | c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff; |
| 2879 | c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff; |
| 2880 | c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff; |
| 2881 | c->Request.CDB[13]= creq->nr_sectors & 0xff; |
| 2882 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
| 2883 | } |
| 2884 | } else if (blk_pc_request(creq)) { |
| 2885 | c->Request.CDBLen = creq->cmd_len; |
| 2886 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2887 | } else { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2888 | printk(KERN_WARNING "cciss%d: bad request type %d\n", h->ctlr, creq->cmd_type); |
| 2889 | BUG(); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2890 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2891 | |
| 2892 | spin_lock_irq(q->queue_lock); |
| 2893 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2894 | addQ(&(h->reqQ), c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2895 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2896 | if (h->Qdepth > h->maxQsinceinit) |
| 2897 | h->maxQsinceinit = h->Qdepth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | |
| 2899 | goto queue; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2900 | full: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2901 | blk_stop_queue(q); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2902 | startio: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | /* We will already have the driver lock here so not need |
| 2904 | * to lock it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2905 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | start_io(h); |
| 2907 | } |
| 2908 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2909 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 2910 | { |
| 2911 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 2912 | /* Any rejects from sendcmd() lying around? Process them first */ |
| 2913 | if (h->scsi_rejects.ncompletions == 0) |
| 2914 | return h->access.command_completed(h); |
| 2915 | else { |
| 2916 | struct sendcmd_reject_list *srl; |
| 2917 | int n; |
| 2918 | srl = &h->scsi_rejects; |
| 2919 | n = --srl->ncompletions; |
| 2920 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ |
| 2921 | printk("p"); |
| 2922 | return srl->complete[n]; |
| 2923 | } |
| 2924 | #else |
| 2925 | return h->access.command_completed(h); |
| 2926 | #endif |
| 2927 | } |
| 2928 | |
| 2929 | static inline int interrupt_pending(ctlr_info_t *h) |
| 2930 | { |
| 2931 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2932 | return (h->access.intr_pending(h) |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2933 | || (h->scsi_rejects.ncompletions > 0)); |
| 2934 | #else |
| 2935 | return h->access.intr_pending(h); |
| 2936 | #endif |
| 2937 | } |
| 2938 | |
| 2939 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 2940 | { |
| 2941 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2942 | return (((h->access.intr_pending(h) == 0) || |
| 2943 | (h->interrupts_enabled == 0)) |
| 2944 | && (h->scsi_rejects.ncompletions == 0)); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2945 | #else |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2946 | return (((h->access.intr_pending(h) == 0) || |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2947 | (h->interrupts_enabled == 0))); |
| 2948 | #endif |
| 2949 | } |
| 2950 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2951 | static irqreturn_t do_cciss_intr(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2952 | { |
| 2953 | ctlr_info_t *h = dev_id; |
| 2954 | CommandList_struct *c; |
| 2955 | unsigned long flags; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2956 | __u32 a, a1, a2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2958 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | return IRQ_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2960 | /* |
| 2961 | * If there are completed commands in the completion queue, |
| 2962 | * we had better do something about it. |
| 2963 | */ |
| 2964 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2965 | while (interrupt_pending(h)) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2966 | while ((a = get_next_completion(h)) != FIFO_EMPTY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2967 | a1 = a; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2968 | if ((a & 0x04)) { |
| 2969 | a2 = (a >> 3); |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 2970 | if (a2 >= h->nr_cmds) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2971 | printk(KERN_WARNING |
| 2972 | "cciss: controller cciss%d failed, stopping.\n", |
| 2973 | h->ctlr); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2974 | fail_all_cmds(h->ctlr); |
| 2975 | return IRQ_HANDLED; |
| 2976 | } |
| 2977 | |
| 2978 | c = h->cmd_pool + a2; |
| 2979 | a = c->busaddr; |
| 2980 | |
| 2981 | } else { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2982 | a &= ~3; |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2983 | if ((c = h->cmpQ) == NULL) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2984 | printk(KERN_WARNING |
| 2985 | "cciss: Completion of %08x ignored\n", |
| 2986 | a1); |
| 2987 | continue; |
| 2988 | } |
| 2989 | while (c->busaddr != a) { |
| 2990 | c = c->next; |
| 2991 | if (c == h->cmpQ) |
| 2992 | break; |
| 2993 | } |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2994 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | /* |
| 2996 | * If we've found the command, take it off the |
| 2997 | * completion Q and free it |
| 2998 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2999 | if (c->busaddr == a) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3000 | removeQ(&h->cmpQ, c); |
| 3001 | if (c->cmd_type == CMD_RWREQ) { |
| 3002 | complete_command(h, c, 0); |
| 3003 | } else if (c->cmd_type == CMD_IOCTL_PEND) { |
| 3004 | complete(c->waiting); |
| 3005 | } |
| 3006 | # ifdef CONFIG_CISS_SCSI_TAPE |
| 3007 | else if (c->cmd_type == CMD_SCSI) |
| 3008 | complete_scsi_command(c, 0, a1); |
| 3009 | # endif |
| 3010 | continue; |
| 3011 | } |
| 3012 | } |
| 3013 | } |
| 3014 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3015 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); |
| 3016 | return IRQ_HANDLED; |
| 3017 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3018 | |
| 3019 | /* |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3020 | * We cannot read the structure directly, for portability we must use |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3021 | * the io functions. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3022 | * This is for debug only. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3023 | */ |
| 3024 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3025 | static void print_cfg_table(CfgTable_struct *tb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | { |
| 3027 | int i; |
| 3028 | char temp_name[17]; |
| 3029 | |
| 3030 | printk("Controller Configuration information\n"); |
| 3031 | printk("------------------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3032 | for (i = 0; i < 4; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3033 | temp_name[i] = readb(&(tb->Signature[i])); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3034 | temp_name[4] = '\0'; |
| 3035 | printk(" Signature = %s\n", temp_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3036 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3037 | printk(" Transport methods supported = 0x%x\n", |
| 3038 | readl(&(tb->TransportSupport))); |
| 3039 | printk(" Transport methods active = 0x%x\n", |
| 3040 | readl(&(tb->TransportActive))); |
| 3041 | printk(" Requested transport Method = 0x%x\n", |
| 3042 | readl(&(tb->HostWrite.TransportRequest))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3043 | printk(" Coalesce Interrupt Delay = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3044 | readl(&(tb->HostWrite.CoalIntDelay))); |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3045 | printk(" Coalesce Interrupt Count = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3046 | readl(&(tb->HostWrite.CoalIntCount))); |
| 3047 | printk(" Max outstanding commands = 0x%d\n", |
| 3048 | readl(&(tb->CmdsOutMax))); |
| 3049 | printk(" Bus Types = 0x%x\n", readl(&(tb->BusTypes))); |
| 3050 | for (i = 0; i < 16; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3051 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 3052 | temp_name[16] = '\0'; |
| 3053 | printk(" Server Name = %s\n", temp_name); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3054 | printk(" Heartbeat Counter = 0x%x\n\n\n", readl(&(tb->HeartBeat))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3056 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3057 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3058 | static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3059 | { |
| 3060 | int i, offset, mem_type, bar_type; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3061 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | return 0; |
| 3063 | offset = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3064 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3065 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3066 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 3067 | offset += 4; |
| 3068 | else { |
| 3069 | mem_type = pci_resource_flags(pdev, i) & |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3070 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3071 | switch (mem_type) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3072 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 3073 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 3074 | offset += 4; /* 32 bit */ |
| 3075 | break; |
| 3076 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 3077 | offset += 8; |
| 3078 | break; |
| 3079 | default: /* reserved in PCI 2.2 */ |
| 3080 | printk(KERN_WARNING |
| 3081 | "Base address is invalid\n"); |
| 3082 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3083 | break; |
| 3084 | } |
| 3085 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3086 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 3087 | return i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3088 | } |
| 3089 | return -1; |
| 3090 | } |
| 3091 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3092 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 3093 | * controllers that are capable. If not, we use IO-APIC mode. |
| 3094 | */ |
| 3095 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3096 | static void __devinit cciss_interrupt_mode(ctlr_info_t *c, |
| 3097 | struct pci_dev *pdev, __u32 board_id) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3098 | { |
| 3099 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3100 | int err; |
| 3101 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, |
| 3102 | {0, 2}, {0, 3} |
| 3103 | }; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3104 | |
| 3105 | /* Some boards advertise MSI but don't really support it */ |
| 3106 | if ((board_id == 0x40700E11) || |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3107 | (board_id == 0x40800E11) || |
| 3108 | (board_id == 0x40820E11) || (board_id == 0x40830E11)) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3109 | goto default_int_mode; |
| 3110 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3111 | if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { |
| 3112 | err = pci_enable_msix(pdev, cciss_msix_entries, 4); |
| 3113 | if (!err) { |
| 3114 | c->intr[0] = cciss_msix_entries[0].vector; |
| 3115 | c->intr[1] = cciss_msix_entries[1].vector; |
| 3116 | c->intr[2] = cciss_msix_entries[2].vector; |
| 3117 | c->intr[3] = cciss_msix_entries[3].vector; |
| 3118 | c->msix_vector = 1; |
| 3119 | return; |
| 3120 | } |
| 3121 | if (err > 0) { |
| 3122 | printk(KERN_WARNING "cciss: only %d MSI-X vectors " |
| 3123 | "available\n", err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3124 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3125 | } else { |
| 3126 | printk(KERN_WARNING "cciss: MSI-X init failed %d\n", |
| 3127 | err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3128 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3129 | } |
| 3130 | } |
| 3131 | if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) { |
| 3132 | if (!pci_enable_msi(pdev)) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3133 | c->msi_vector = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3134 | } else { |
| 3135 | printk(KERN_WARNING "cciss: MSI init failed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3136 | } |
| 3137 | } |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3138 | default_int_mode: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3139 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3140 | /* if we get here we're going to use the default interrupt mode */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3141 | c->intr[SIMPLE_MODE_INT] = pdev->irq; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3142 | return; |
| 3143 | } |
| 3144 | |
Randy Dunlap | 7d1fd97 | 2008-01-14 00:55:17 -0800 | [diff] [blame] | 3145 | static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3146 | { |
| 3147 | ushort subsystem_vendor_id, subsystem_device_id, command; |
| 3148 | __u32 board_id, scratchpad = 0; |
| 3149 | __u64 cfg_offset; |
| 3150 | __u32 cfg_base_addr; |
| 3151 | __u64 cfg_base_addr_index; |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3152 | int i, err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3153 | |
| 3154 | /* check to see if controller has been disabled */ |
| 3155 | /* BEFORE trying to enable it */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3156 | (void)pci_read_config_word(pdev, PCI_COMMAND, &command); |
| 3157 | if (!(command & 0x02)) { |
| 3158 | printk(KERN_WARNING |
| 3159 | "cciss: controller appears to be disabled\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3160 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3161 | } |
| 3162 | |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3163 | err = pci_enable_device(pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3164 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3165 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3166 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3167 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3168 | |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3169 | err = pci_request_regions(pdev, "cciss"); |
| 3170 | if (err) { |
| 3171 | printk(KERN_ERR "cciss: Cannot obtain PCI resources, " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3172 | "aborting\n"); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3173 | return err; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3174 | } |
| 3175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3176 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 3177 | subsystem_device_id = pdev->subsystem_device; |
| 3178 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3179 | subsystem_vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3181 | #ifdef CCISS_DEBUG |
| 3182 | printk("command = %x\n", command); |
| 3183 | printk("irq = %x\n", pdev->irq); |
| 3184 | printk("board_id = %x\n", board_id); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3185 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3186 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3187 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
| 3188 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 3189 | */ |
| 3190 | cciss_interrupt_mode(c, pdev, board_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3191 | |
| 3192 | /* |
| 3193 | * Memory base addr is first addr , the second points to the config |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3194 | * table |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3195 | */ |
| 3196 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3197 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3198 | #ifdef CCISS_DEBUG |
| 3199 | printk("address 0 = %x\n", c->paddr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3200 | #endif /* CCISS_DEBUG */ |
Mike Miller | a5b9287 | 2006-12-13 00:34:21 -0800 | [diff] [blame] | 3201 | c->vaddr = remap_pci_mem(c->paddr, 0x250); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | |
| 3203 | /* Wait for the board to become ready. (PCI hotplug needs this.) |
| 3204 | * We poll for up to 120 secs, once per 100ms. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3205 | for (i = 0; i < 1200; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3206 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 3207 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 3208 | break; |
| 3209 | set_current_state(TASK_INTERRUPTIBLE); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3210 | schedule_timeout(HZ / 10); /* wait 100ms */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3211 | } |
| 3212 | if (scratchpad != CCISS_FIRMWARE_READY) { |
| 3213 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3214 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3215 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3216 | } |
| 3217 | |
| 3218 | /* get the address index number */ |
| 3219 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); |
| 3220 | cfg_base_addr &= (__u32) 0x0000ffff; |
| 3221 | #ifdef CCISS_DEBUG |
| 3222 | printk("cfg base address = %x\n", cfg_base_addr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3223 | #endif /* CCISS_DEBUG */ |
| 3224 | cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3225 | #ifdef CCISS_DEBUG |
| 3226 | printk("cfg base address index = %x\n", cfg_base_addr_index); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3227 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3228 | if (cfg_base_addr_index == -1) { |
| 3229 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3230 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3231 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3232 | } |
| 3233 | |
| 3234 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); |
| 3235 | #ifdef CCISS_DEBUG |
| 3236 | printk("cfg offset = %x\n", cfg_offset); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3237 | #endif /* CCISS_DEBUG */ |
| 3238 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 3239 | cfg_base_addr_index) + |
| 3240 | cfg_offset, sizeof(CfgTable_struct)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3241 | c->board_id = board_id; |
| 3242 | |
| 3243 | #ifdef CCISS_DEBUG |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 3244 | print_cfg_table(c->cfgtable); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3245 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3246 | |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 3247 | /* Some controllers support Zero Memory Raid (ZMR). |
| 3248 | * When configured in ZMR mode the number of supported |
| 3249 | * commands drops to 64. So instead of just setting an |
| 3250 | * arbitrary value we make the driver a little smarter. |
| 3251 | * We read the config table to tell us how many commands |
| 3252 | * are supported on the controller then subtract 4 to |
| 3253 | * leave a little room for ioctl calls. |
| 3254 | */ |
| 3255 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3256 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3257 | if (board_id == products[i].board_id) { |
| 3258 | c->product_name = products[i].product_name; |
| 3259 | c->access = *(products[i].access); |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 3260 | c->nr_cmds = c->max_commands - 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3261 | break; |
| 3262 | } |
| 3263 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3264 | if ((readb(&c->cfgtable->Signature[0]) != 'C') || |
| 3265 | (readb(&c->cfgtable->Signature[1]) != 'I') || |
| 3266 | (readb(&c->cfgtable->Signature[2]) != 'S') || |
| 3267 | (readb(&c->cfgtable->Signature[3]) != 'S')) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3268 | printk("Does not appear to be a valid CISS config table\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3269 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3270 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3271 | } |
Mike Miller | 4ff9a9a | 2006-12-06 20:35:00 -0800 | [diff] [blame] | 3272 | /* We didn't find the controller in our list. We know the |
| 3273 | * signature is valid. If it's an HP device let's try to |
| 3274 | * bind to the device and fire it up. Otherwise we bail. |
| 3275 | */ |
| 3276 | if (i == ARRAY_SIZE(products)) { |
| 3277 | if (subsystem_vendor_id == PCI_VENDOR_ID_HP) { |
| 3278 | c->product_name = products[i-1].product_name; |
| 3279 | c->access = *(products[i-1].access); |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 3280 | c->nr_cmds = c->max_commands - 4; |
Mike Miller | 4ff9a9a | 2006-12-06 20:35:00 -0800 | [diff] [blame] | 3281 | printk(KERN_WARNING "cciss: This is an unknown " |
| 3282 | "Smart Array controller.\n" |
| 3283 | "cciss: Please update to the latest driver " |
| 3284 | "available from www.hp.com.\n"); |
| 3285 | } else { |
| 3286 | printk(KERN_WARNING "cciss: Sorry, I don't know how" |
| 3287 | " to access the Smart Array controller %08lx\n" |
| 3288 | , (unsigned long)board_id); |
| 3289 | err = -ENODEV; |
| 3290 | goto err_out_free_res; |
| 3291 | } |
| 3292 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3293 | #ifdef CONFIG_X86 |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3294 | { |
| 3295 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 3296 | __u32 prefetch; |
| 3297 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); |
| 3298 | prefetch |= 0x100; |
| 3299 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); |
| 3300 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3301 | #endif |
| 3302 | |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3303 | /* Disabling DMA prefetch and refetch for the P600. |
| 3304 | * An ASIC bug may result in accesses to invalid memory addresses. |
| 3305 | * We've disabled prefetch for some time now. Testing with XEN |
| 3306 | * kernels revealed a bug in the refetch if dom0 resides on a P600. |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3307 | */ |
| 3308 | if(board_id == 0x3225103C) { |
| 3309 | __u32 dma_prefetch; |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3310 | __u32 dma_refetch; |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3311 | dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG); |
| 3312 | dma_prefetch |= 0x8000; |
| 3313 | writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG); |
Mike Miller (OS Dev) | 8bf50f7 | 2007-10-17 10:10:04 +0200 | [diff] [blame] | 3314 | pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch); |
| 3315 | dma_refetch |= 0x1; |
| 3316 | pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch); |
Mike Miller | f92e2f5 | 2006-12-06 20:35:04 -0800 | [diff] [blame] | 3317 | } |
| 3318 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3319 | #ifdef CCISS_DEBUG |
| 3320 | printk("Trying to put board into Simple mode\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3321 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3322 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3323 | /* Update the field, and then ring the doorbell */ |
| 3324 | writel(CFGTBL_Trans_Simple, &(c->cfgtable->HostWrite.TransportRequest)); |
| 3325 | writel(CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3326 | |
| 3327 | /* under certain very rare conditions, this can take awhile. |
| 3328 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3329 | * as we enter this code.) */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3330 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3331 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3332 | break; |
| 3333 | /* delay and try again */ |
| 3334 | set_current_state(TASK_INTERRUPTIBLE); |
| 3335 | schedule_timeout(10); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3336 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3337 | |
| 3338 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3339 | printk(KERN_DEBUG "I counter got to %d %x\n", i, |
| 3340 | readl(c->vaddr + SA5_DOORBELL)); |
| 3341 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3342 | #ifdef CCISS_DEBUG |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3343 | print_cfg_table(c->cfgtable); |
| 3344 | #endif /* CCISS_DEBUG */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3345 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3346 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3347 | printk(KERN_WARNING "cciss: unable to get board into" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3348 | " simple mode\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3349 | err = -ENODEV; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3350 | goto err_out_free_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3351 | } |
| 3352 | return 0; |
| 3353 | |
Linus Torvalds | 5faad62 | 2006-12-13 09:15:34 -0800 | [diff] [blame] | 3354 | err_out_free_res: |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3355 | /* |
| 3356 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 3357 | * Smart Array controllers that pci_enable_device does not undo |
| 3358 | */ |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3359 | pci_release_regions(pdev); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 3360 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3361 | } |
| 3362 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3363 | /* Function to find the first free pointer into our hba[] array |
| 3364 | * Returns -1 if no free entries are left. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3365 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3366 | static int alloc_cciss_hba(void) |
| 3367 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3368 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3369 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3370 | for (i = 0; i < MAX_CTLR; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3371 | if (!hba[i]) { |
| 3372 | ctlr_info_t *p; |
Jesper Juhl | f2912a1 | 2007-07-31 00:39:39 -0700 | [diff] [blame] | 3373 | |
Eric Sesterhenn | 06ff37f | 2006-03-08 11:21:52 +0100 | [diff] [blame] | 3374 | p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3375 | if (!p) |
| 3376 | goto Enomem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3377 | hba[i] = p; |
| 3378 | return i; |
| 3379 | } |
| 3380 | } |
| 3381 | printk(KERN_WARNING "cciss: This driver supports a maximum" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3382 | " of %d controllers.\n", MAX_CTLR); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3383 | return -1; |
| 3384 | Enomem: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3385 | printk(KERN_ERR "cciss: out of memory.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3386 | return -1; |
| 3387 | } |
| 3388 | |
| 3389 | static void free_hba(int i) |
| 3390 | { |
| 3391 | ctlr_info_t *p = hba[i]; |
| 3392 | int n; |
| 3393 | |
| 3394 | hba[i] = NULL; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3395 | for (n = 0; n < CISS_MAX_LUN; n++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3396 | put_disk(p->gendisk[n]); |
| 3397 | kfree(p); |
| 3398 | } |
| 3399 | |
| 3400 | /* |
| 3401 | * This is it. Find all the controllers and register them. I really hate |
| 3402 | * stealing all these major device numbers. |
| 3403 | * returns the number of block devices registered. |
| 3404 | */ |
| 3405 | static int __devinit cciss_init_one(struct pci_dev *pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3406 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3407 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3408 | int i; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3409 | int j = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3410 | int rc; |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3411 | int dac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3412 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3413 | i = alloc_cciss_hba(); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3414 | if (i < 0) |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 3415 | return -1; |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 3416 | |
| 3417 | hba[i]->busy_initializing = 1; |
| 3418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3419 | if (cciss_pci_init(hba[i], pdev) != 0) |
| 3420 | goto clean1; |
| 3421 | |
| 3422 | sprintf(hba[i]->devname, "cciss%d", i); |
| 3423 | hba[i]->ctlr = i; |
| 3424 | hba[i]->pdev = pdev; |
| 3425 | |
| 3426 | /* configure PCI DMA stuff */ |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 3427 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3428 | dac = 1; |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 3429 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3430 | dac = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3431 | else { |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3432 | printk(KERN_ERR "cciss: no suitable DMA available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3433 | goto clean1; |
| 3434 | } |
| 3435 | |
| 3436 | /* |
| 3437 | * register with the major number, or get a dynamic major number |
| 3438 | * by passing 0 as argument. This is done for greater than |
| 3439 | * 8 controller support. |
| 3440 | */ |
| 3441 | if (i < MAX_CTLR_ORIG) |
Christoph Hellwig | 564de74 | 2006-01-08 01:05:17 -0800 | [diff] [blame] | 3442 | hba[i]->major = COMPAQ_CISS_MAJOR + i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3443 | rc = register_blkdev(hba[i]->major, hba[i]->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3444 | if (rc == -EBUSY || rc == -EINVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3445 | printk(KERN_ERR |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3446 | "cciss: Unable to get major number %d for %s " |
| 3447 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3448 | goto clean1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3449 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3450 | if (i >= MAX_CTLR_ORIG) |
| 3451 | hba[i]->major = rc; |
| 3452 | } |
| 3453 | |
| 3454 | /* make sure the board interrupts are off */ |
| 3455 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3456 | if (request_irq(hba[i]->intr[SIMPLE_MODE_INT], do_cciss_intr, |
Thomas Gleixner | 69ab391 | 2006-07-01 19:29:32 -0700 | [diff] [blame] | 3457 | IRQF_DISABLED | IRQF_SHARED, hba[i]->devname, hba[i])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3458 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3459 | hba[i]->intr[SIMPLE_MODE_INT], hba[i]->devname); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3460 | goto clean2; |
| 3461 | } |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3462 | |
| 3463 | printk(KERN_INFO "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3464 | hba[i]->devname, pdev->device, pci_name(pdev), |
| 3465 | hba[i]->intr[SIMPLE_MODE_INT], dac ? "" : " not"); |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 3466 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3467 | hba[i]->cmd_pool_bits = |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 3468 | kmalloc(DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
| 3469 | * sizeof(unsigned long), GFP_KERNEL); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3470 | hba[i]->cmd_pool = (CommandList_struct *) |
| 3471 | pci_alloc_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3472 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3473 | &(hba[i]->cmd_pool_dhandle)); |
| 3474 | hba[i]->errinfo_pool = (ErrorInfo_struct *) |
| 3475 | pci_alloc_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3476 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3477 | &(hba[i]->errinfo_pool_dhandle)); |
| 3478 | if ((hba[i]->cmd_pool_bits == NULL) |
| 3479 | || (hba[i]->cmd_pool == NULL) |
| 3480 | || (hba[i]->errinfo_pool == NULL)) { |
| 3481 | printk(KERN_ERR "cciss: out of memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3482 | goto clean4; |
| 3483 | } |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3484 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3485 | hba[i]->scsi_rejects.complete = |
| 3486 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3487 | (hba[i]->nr_cmds + 5), GFP_KERNEL); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3488 | if (hba[i]->scsi_rejects.complete == NULL) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3489 | printk(KERN_ERR "cciss: out of memory"); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3490 | goto clean4; |
| 3491 | } |
| 3492 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3493 | spin_lock_init(&hba[i]->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3494 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3495 | /* Initialize the pdev driver private data. |
| 3496 | have it point to hba[i]. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3497 | pci_set_drvdata(pdev, hba[i]); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3498 | /* command and error info recs zeroed out before |
| 3499 | they are used */ |
| 3500 | memset(hba[i]->cmd_pool_bits, 0, |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 3501 | DIV_ROUND_UP(hba[i]->nr_cmds, BITS_PER_LONG) |
| 3502 | * sizeof(unsigned long)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3503 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3504 | hba[i]->num_luns = 0; |
| 3505 | hba[i]->highest_lun = -1; |
| 3506 | for (j = 0; j < CISS_MAX_LUN; j++) { |
| 3507 | hba[i]->drv[j].raid_level = -1; |
| 3508 | hba[i]->drv[j].queue = NULL; |
| 3509 | hba[i]->gendisk[j] = NULL; |
| 3510 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3511 | |
| 3512 | cciss_scsi_setup(i); |
| 3513 | |
| 3514 | /* Turn the interrupts on so we can service requests */ |
| 3515 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); |
| 3516 | |
| 3517 | cciss_procinit(i); |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 3518 | |
| 3519 | hba[i]->cciss_max_sectors = 2048; |
| 3520 | |
Mike Miller | d6dbf42 | 2005-09-21 09:55:32 -0700 | [diff] [blame] | 3521 | hba[i]->busy_initializing = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3522 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3523 | rebuild_lun_table(hba[i], 1); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 3524 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3525 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3526 | clean4: |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3527 | #ifdef CONFIG_CISS_SCSI_TAPE |
Andrew Morton | 1acc0b0 | 2006-01-04 18:30:03 -0800 | [diff] [blame] | 3528 | kfree(hba[i]->scsi_rejects.complete); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3529 | #endif |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 3530 | kfree(hba[i]->cmd_pool_bits); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3531 | if (hba[i]->cmd_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3532 | pci_free_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3533 | hba[i]->nr_cmds * sizeof(CommandList_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3534 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
| 3535 | if (hba[i]->errinfo_pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3536 | pci_free_consistent(hba[i]->pdev, |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3537 | hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3538 | hba[i]->errinfo_pool, |
| 3539 | hba[i]->errinfo_pool_dhandle); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3540 | free_irq(hba[i]->intr[SIMPLE_MODE_INT], hba[i]); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3541 | clean2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3542 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 3543 | clean1: |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 3544 | hba[i]->busy_initializing = 0; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3545 | /* cleanup any queues that may have been initialized */ |
| 3546 | for (j=0; j <= hba[i]->highest_lun; j++){ |
| 3547 | drive_info_struct *drv = &(hba[i]->drv[j]); |
| 3548 | if (drv->queue) |
| 3549 | blk_cleanup_queue(drv->queue); |
| 3550 | } |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3551 | /* |
| 3552 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 3553 | * Smart Array controllers that pci_enable_device does not undo |
| 3554 | */ |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3555 | pci_release_regions(pdev); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 3556 | pci_set_drvdata(pdev, NULL); |
Patrick McHardy | 61808c2 | 2006-03-23 02:59:24 -0800 | [diff] [blame] | 3557 | free_hba(i); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 3558 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3559 | } |
| 3560 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 3561 | static void cciss_shutdown(struct pci_dev *pdev) |
| 3562 | { |
| 3563 | ctlr_info_t *tmp_ptr; |
| 3564 | int i; |
| 3565 | char flush_buf[4]; |
| 3566 | int return_code; |
| 3567 | |
| 3568 | tmp_ptr = pci_get_drvdata(pdev); |
| 3569 | if (tmp_ptr == NULL) |
| 3570 | return; |
| 3571 | i = tmp_ptr->ctlr; |
| 3572 | if (hba[i] == NULL) |
| 3573 | return; |
| 3574 | |
| 3575 | /* Turn board interrupts off and send the flush cache command */ |
| 3576 | /* sendcmd will turn off interrupt, and send the flush... |
| 3577 | * To write all data in the battery backed cache to disks */ |
| 3578 | memset(flush_buf, 0, 4); |
| 3579 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, |
| 3580 | TYPE_CMD); |
| 3581 | if (return_code == IO_OK) { |
| 3582 | printk(KERN_INFO "Completed flushing cache on controller %d\n", i); |
| 3583 | } else { |
| 3584 | printk(KERN_WARNING "Error flushing cache on controller %d\n", i); |
| 3585 | } |
| 3586 | free_irq(hba[i]->intr[2], hba[i]); |
| 3587 | } |
| 3588 | |
| 3589 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3590 | { |
| 3591 | ctlr_info_t *tmp_ptr; |
| 3592 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3593 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3594 | if (pci_get_drvdata(pdev) == NULL) { |
| 3595 | printk(KERN_ERR "cciss: Unable to remove device \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3596 | return; |
| 3597 | } |
| 3598 | tmp_ptr = pci_get_drvdata(pdev); |
| 3599 | i = tmp_ptr->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3600 | if (hba[i] == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3601 | printk(KERN_ERR "cciss: device appears to " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3602 | "already be removed \n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3603 | return; |
| 3604 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 3605 | |
| 3606 | remove_proc_entry(hba[i]->devname, proc_cciss); |
| 3607 | unregister_blkdev(hba[i]->major, hba[i]->devname); |
| 3608 | |
| 3609 | /* remove it from the disk list */ |
| 3610 | for (j = 0; j < CISS_MAX_LUN; j++) { |
| 3611 | struct gendisk *disk = hba[i]->gendisk[j]; |
| 3612 | if (disk) { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 3613 | struct request_queue *q = disk->queue; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 3614 | |
| 3615 | if (disk->flags & GENHD_FL_UP) |
| 3616 | del_gendisk(disk); |
| 3617 | if (q) |
| 3618 | blk_cleanup_queue(q); |
| 3619 | } |
| 3620 | } |
| 3621 | |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 3622 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 3623 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 3624 | #endif |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 3625 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 3626 | cciss_shutdown(pdev); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3627 | |
| 3628 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3629 | if (hba[i]->msix_vector) |
| 3630 | pci_disable_msix(hba[i]->pdev); |
| 3631 | else if (hba[i]->msi_vector) |
| 3632 | pci_disable_msi(hba[i]->pdev); |
| 3633 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3634 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3635 | iounmap(hba[i]->vaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3636 | |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3637 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(CommandList_struct), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3638 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 3639 | pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct), |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3640 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3641 | kfree(hba[i]->cmd_pool_bits); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3642 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3643 | kfree(hba[i]->scsi_rejects.complete); |
| 3644 | #endif |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 3645 | /* |
| 3646 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 3647 | * Smart Array controllers that pci_enable_device does not undo |
| 3648 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3649 | pci_release_regions(pdev); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 3650 | pci_set_drvdata(pdev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3651 | free_hba(i); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3652 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3653 | |
| 3654 | static struct pci_driver cciss_pci_driver = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3655 | .name = "cciss", |
| 3656 | .probe = cciss_init_one, |
| 3657 | .remove = __devexit_p(cciss_remove_one), |
| 3658 | .id_table = cciss_pci_device_id, /* id_table */ |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 3659 | .shutdown = cciss_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3660 | }; |
| 3661 | |
| 3662 | /* |
| 3663 | * This is it. Register the PCI driver information for the cards we control |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3664 | * the OS will call our registered routines when it finds one of our cards. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3665 | */ |
| 3666 | static int __init cciss_init(void) |
| 3667 | { |
| 3668 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 3669 | |
| 3670 | /* Register for our PCI devices */ |
Richard Knutsson | 9bfab8c | 2005-11-30 00:59:34 +0100 | [diff] [blame] | 3671 | return pci_register_driver(&cciss_pci_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3672 | } |
| 3673 | |
| 3674 | static void __exit cciss_cleanup(void) |
| 3675 | { |
| 3676 | int i; |
| 3677 | |
| 3678 | pci_unregister_driver(&cciss_pci_driver); |
| 3679 | /* double check that all controller entrys have been removed */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3680 | for (i = 0; i < MAX_CTLR; i++) { |
| 3681 | if (hba[i] != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3682 | printk(KERN_WARNING "cciss: had to remove" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3683 | " controller %d\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3684 | cciss_remove_one(hba[i]->pdev); |
| 3685 | } |
| 3686 | } |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 3687 | remove_proc_entry("driver/cciss", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3688 | } |
| 3689 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3690 | static void fail_all_cmds(unsigned long ctlr) |
| 3691 | { |
| 3692 | /* If we get here, the board is apparently dead. */ |
| 3693 | ctlr_info_t *h = hba[ctlr]; |
| 3694 | CommandList_struct *c; |
| 3695 | unsigned long flags; |
| 3696 | |
| 3697 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3698 | h->alive = 0; /* the controller apparently died... */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3699 | |
| 3700 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); |
| 3701 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3702 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3703 | |
| 3704 | /* move everything off the request queue onto the completed queue */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3705 | while ((c = h->reqQ) != NULL) { |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3706 | removeQ(&(h->reqQ), c); |
| 3707 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3708 | addQ(&(h->cmpQ), c); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3709 | } |
| 3710 | |
| 3711 | /* Now, fail everything on the completed queue with a HW error */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3712 | while ((c = h->cmpQ) != NULL) { |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3713 | removeQ(&h->cmpQ, c); |
| 3714 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; |
| 3715 | if (c->cmd_type == CMD_RWREQ) { |
| 3716 | complete_command(h, c, 0); |
| 3717 | } else if (c->cmd_type == CMD_IOCTL_PEND) |
| 3718 | complete(c->waiting); |
| 3719 | #ifdef CONFIG_CISS_SCSI_TAPE |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3720 | else if (c->cmd_type == CMD_SCSI) |
| 3721 | complete_scsi_command(c, 0, 0); |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3722 | #endif |
| 3723 | } |
| 3724 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); |
| 3725 | return; |
| 3726 | } |
| 3727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3728 | module_init(cciss_init); |
| 3729 | module_exit(cciss_cleanup); |