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> |
Randy Dunlap | 4d76160 | 2009-09-18 12:58:48 -0700 | [diff] [blame] | 38 | #include <linux/jiffies.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/hdreg.h> |
| 40 | #include <linux/spinlock.h> |
| 41 | #include <linux/compat.h> |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 42 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <asm/uaccess.h> |
| 44 | #include <asm/io.h> |
| 45 | |
mike.miller@hp.com | eb0df99 | 2005-06-10 14:51:04 -0500 | [diff] [blame] | 46 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <linux/blkdev.h> |
| 48 | #include <linux/genhd.h> |
| 49 | #include <linux/completion.h> |
Stephen Cameron | d5d3b73 | 2007-05-08 00:30:02 -0700 | [diff] [blame] | 50 | #include <scsi/scsi.h> |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 51 | #include <scsi/sg.h> |
| 52 | #include <scsi/scsi_ioctl.h> |
| 53 | #include <linux/cdrom.h> |
Mike Pagano | 231bc2a | 2008-04-10 21:29:26 -0700 | [diff] [blame] | 54 | #include <linux/scatterlist.h> |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 55 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 58 | #define DRIVER_NAME "HP CISS Driver (v 3.6.26)" |
| 59 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(3, 6, 26) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | /* Embedded module documentation macros - see modules.h */ |
| 62 | MODULE_AUTHOR("Hewlett-Packard Company"); |
Mike Miller | 24aac48 | 2008-06-12 15:21:34 -0700 | [diff] [blame] | 63 | MODULE_DESCRIPTION("Driver for HP Smart Array Controllers"); |
Mike Miller | 841fdff | 2010-06-02 12:58:09 -0700 | [diff] [blame] | 64 | MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers"); |
| 65 | MODULE_VERSION("3.6.26"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | MODULE_LICENSE("GPL"); |
| 67 | |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 68 | static DEFINE_MUTEX(cciss_mutex); |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | #include "cciss_cmd.h" |
| 71 | #include "cciss.h" |
| 72 | #include <linux/cciss_ioctl.h> |
| 73 | |
| 74 | /* define the PCI info for the cards we can control */ |
| 75 | static const struct pci_device_id cciss_pci_device_id[] = { |
Bjorn Helgaas | f82ccdb | 2006-06-25 05:49:07 -0700 | [diff] [blame] | 76 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, 0x0E11, 0x4070}, |
| 77 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4080}, |
| 78 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4082}, |
| 79 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, 0x0E11, 0x4083}, |
| 80 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x4091}, |
| 81 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409A}, |
| 82 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409B}, |
| 83 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409C}, |
| 84 | {PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, 0x0E11, 0x409D}, |
| 85 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, 0x103C, 0x3225}, |
| 86 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3223}, |
| 87 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3234}, |
| 88 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x3235}, |
| 89 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3211}, |
| 90 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3212}, |
| 91 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3213}, |
| 92 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3214}, |
| 93 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, 0x103C, 0x3215}, |
Mike Miller | de92391 | 2006-12-06 20:35:03 -0800 | [diff] [blame] | 94 | {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] | 95 | {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, 0x103C, 0x323D}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | {0,} |
| 97 | }; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); |
| 100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | /* board_id = Subsystem Device ID & Vendor ID |
| 102 | * product = Marketing Name for the board |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 103 | * access = Address of the struct of function pointers |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | */ |
| 105 | static struct board_type products[] = { |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 106 | {0x40700E11, "Smart Array 5300", &SA5_access}, |
| 107 | {0x40800E11, "Smart Array 5i", &SA5B_access}, |
| 108 | {0x40820E11, "Smart Array 532", &SA5B_access}, |
| 109 | {0x40830E11, "Smart Array 5312", &SA5B_access}, |
| 110 | {0x409A0E11, "Smart Array 641", &SA5_access}, |
| 111 | {0x409B0E11, "Smart Array 642", &SA5_access}, |
| 112 | {0x409C0E11, "Smart Array 6400", &SA5_access}, |
| 113 | {0x409D0E11, "Smart Array 6400 EM", &SA5_access}, |
| 114 | {0x40910E11, "Smart Array 6i", &SA5_access}, |
| 115 | {0x3225103C, "Smart Array P600", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 116 | {0x3235103C, "Smart Array P400i", &SA5_access}, |
| 117 | {0x3211103C, "Smart Array E200i", &SA5_access}, |
| 118 | {0x3212103C, "Smart Array E200", &SA5_access}, |
| 119 | {0x3213103C, "Smart Array E200i", &SA5_access}, |
| 120 | {0x3214103C, "Smart Array E200i", &SA5_access}, |
| 121 | {0x3215103C, "Smart Array E200i", &SA5_access}, |
| 122 | {0x3237103C, "Smart Array E500", &SA5_access}, |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 123 | {0x3223103C, "Smart Array P800", &SA5_access}, |
| 124 | {0x3234103C, "Smart Array P400", &SA5_access}, |
Mike Miller | 4915399 | 2008-07-04 10:00:02 -0700 | [diff] [blame] | 125 | {0x323D103C, "Smart Array P700m", &SA5_access}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | }; |
| 127 | |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 128 | /* 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] | 129 | #define MAX_CONFIG_WAIT 30000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | #define MAX_IOCTL_CONFIG_WAIT 1000 |
| 131 | |
| 132 | /*define how many times we will try a command because of bus resets */ |
| 133 | #define MAX_CMD_RETRIES 3 |
| 134 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | #define MAX_CTLR 32 |
| 136 | |
| 137 | /* Originally cciss driver only supports 8 major numbers */ |
| 138 | #define MAX_CTLR_ORIG 8 |
| 139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | static ctlr_info_t *hba[MAX_CTLR]; |
| 141 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 142 | static struct task_struct *cciss_scan_thread; |
| 143 | static DEFINE_MUTEX(scan_mutex); |
| 144 | static LIST_HEAD(scan_q); |
| 145 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 146 | static void do_cciss_request(struct request_queue *q); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 147 | static irqreturn_t do_cciss_intx(int irq, void *dev_id); |
| 148 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 149 | static int cciss_open(struct block_device *bdev, fmode_t mode); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 150 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 151 | static int cciss_release(struct gendisk *disk, fmode_t mode); |
Arnd Bergmann | 8a6cfeb | 2010-07-08 10:18:46 +0200 | [diff] [blame] | 152 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
| 153 | unsigned int cmd, unsigned long arg); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 154 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 155 | unsigned int cmd, unsigned long arg); |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 156 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | static int cciss_revalidate(struct gendisk *disk); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 159 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl); |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 160 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 161 | int clear_all, int via_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 163 | static void cciss_read_capacity(ctlr_info_t *h, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 164 | sector_t *total_size, unsigned int *block_size); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 165 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 166 | sector_t *total_size, unsigned int *block_size); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 167 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 168 | sector_t total_size, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 169 | unsigned int block_size, InquiryData_struct *inq_buff, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 170 | drive_info_struct *drv); |
Stephen M. Cameron | dac5488 | 2010-07-19 13:45:05 -0500 | [diff] [blame] | 171 | static void __devinit cciss_interrupt_mode(ctlr_info_t *); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 172 | static void start_io(ctlr_info_t *h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 173 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 174 | __u8 page_code, unsigned char scsi3addr[], |
| 175 | int cmd_type); |
scameron@beardog.cca.cpqcorp.net | 85cc61a | 2009-06-08 16:07:45 -0500 | [diff] [blame] | 176 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 177 | int attempt_retry); |
| 178 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 180 | static int add_to_scan_list(struct ctlr_info *h); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 181 | static int scan_thread(void *data); |
| 182 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 183 | static void cciss_hba_release(struct device *dev); |
| 184 | static void cciss_device_release(struct device *dev); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 185 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 186 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index); |
Mike Miller | 29979a7 | 2010-06-11 13:13:35 +0200 | [diff] [blame] | 187 | static inline u32 next_command(ctlr_info_t *h); |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 188 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
| 189 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, |
| 190 | u64 *cfg_offset); |
| 191 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
| 192 | unsigned long *memory_bar); |
| 193 | |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 194 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 195 | /* performant mode helper functions */ |
| 196 | static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, |
| 197 | int *bucket_map); |
| 198 | static void cciss_put_controller_into_performant_mode(ctlr_info_t *h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
| 200 | #ifdef CONFIG_PROC_FS |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 201 | static void cciss_procinit(ctlr_info_t *h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | #else |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 203 | static void cciss_procinit(ctlr_info_t *h) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 204 | { |
| 205 | } |
| 206 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
| 208 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 209 | static int cciss_compat_ioctl(struct block_device *, fmode_t, |
| 210 | unsigned, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | #endif |
| 212 | |
Alexey Dobriyan | 83d5cde | 2009-09-21 17:01:13 -0700 | [diff] [blame] | 213 | static const struct block_device_operations cciss_fops = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 214 | .owner = THIS_MODULE, |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 215 | .open = cciss_unlocked_open, |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 216 | .release = cciss_release, |
Arnd Bergmann | 8a6cfeb | 2010-07-08 10:18:46 +0200 | [diff] [blame] | 217 | .ioctl = do_ioctl, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 218 | .getgeo = cciss_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | #ifdef CONFIG_COMPAT |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 220 | .compat_ioctl = cciss_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | #endif |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 222 | .revalidate_disk = cciss_revalidate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | }; |
| 224 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 225 | /* set_performant_mode: Modify the tag for cciss performant |
| 226 | * set bit 0 for pull model, bits 3-1 for block fetch |
| 227 | * register number |
| 228 | */ |
| 229 | static void set_performant_mode(ctlr_info_t *h, CommandList_struct *c) |
| 230 | { |
| 231 | if (likely(h->transMethod == CFGTBL_Trans_Performant)) |
| 232 | c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); |
| 233 | } |
| 234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | /* |
| 236 | * Enqueuing and dequeuing functions for cmdlists. |
| 237 | */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 238 | static inline void addQ(struct hlist_head *list, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | { |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 240 | hlist_add_head(&c->list, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | } |
| 242 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 243 | static inline void removeQ(CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | { |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 245 | /* |
| 246 | * After kexec/dump some commands might still |
| 247 | * be in flight, which the firmware will try |
| 248 | * to complete. Resetting the firmware doesn't work |
| 249 | * with old fw revisions, so we have to mark |
| 250 | * them off as 'stale' to prevent the driver from |
| 251 | * falling over. |
| 252 | */ |
| 253 | if (WARN_ON(hlist_unhashed(&c->list))) { |
| 254 | c->cmd_type = CMD_MSG_STALE; |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 255 | return; |
Hannes Reinecke | b59e64d | 2009-07-02 22:02:06 +0200 | [diff] [blame] | 256 | } |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 257 | |
| 258 | hlist_del_init(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | } |
| 260 | |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 261 | static void enqueue_cmd_and_start_io(ctlr_info_t *h, |
| 262 | CommandList_struct *c) |
| 263 | { |
| 264 | unsigned long flags; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 265 | set_performant_mode(h, c); |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 266 | spin_lock_irqsave(&h->lock, flags); |
| 267 | addQ(&h->reqQ, c); |
| 268 | h->Qdepth++; |
Stephen M. Cameron | 2a643ec | 2010-08-25 19:58:53 +0200 | [diff] [blame] | 269 | if (h->Qdepth > h->maxQsinceinit) |
| 270 | h->maxQsinceinit = h->Qdepth; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 271 | start_io(h); |
| 272 | spin_unlock_irqrestore(&h->lock, flags); |
| 273 | } |
| 274 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 275 | static void cciss_free_sg_chain_blocks(SGDescriptor_struct **cmd_sg_list, |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 276 | int nr_cmds) |
| 277 | { |
| 278 | int i; |
| 279 | |
| 280 | if (!cmd_sg_list) |
| 281 | return; |
| 282 | for (i = 0; i < nr_cmds; i++) { |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 283 | kfree(cmd_sg_list[i]); |
| 284 | cmd_sg_list[i] = NULL; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 285 | } |
| 286 | kfree(cmd_sg_list); |
| 287 | } |
| 288 | |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 289 | static SGDescriptor_struct **cciss_allocate_sg_chain_blocks( |
| 290 | ctlr_info_t *h, int chainsize, int nr_cmds) |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 291 | { |
| 292 | int j; |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 293 | SGDescriptor_struct **cmd_sg_list; |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 294 | |
| 295 | if (chainsize <= 0) |
| 296 | return NULL; |
| 297 | |
| 298 | cmd_sg_list = kmalloc(sizeof(*cmd_sg_list) * nr_cmds, GFP_KERNEL); |
| 299 | if (!cmd_sg_list) |
| 300 | return NULL; |
| 301 | |
| 302 | /* Build up chain blocks for each command */ |
| 303 | for (j = 0; j < nr_cmds; j++) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 304 | /* Need a block of chainsized s/g elements. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 305 | cmd_sg_list[j] = kmalloc((chainsize * |
| 306 | sizeof(*cmd_sg_list[j])), GFP_KERNEL); |
| 307 | if (!cmd_sg_list[j]) { |
Stephen M. Cameron | 49fc560 | 2010-02-26 16:01:22 -0600 | [diff] [blame] | 308 | dev_err(&h->pdev->dev, "Cannot get memory " |
| 309 | "for s/g chains.\n"); |
| 310 | goto clean; |
| 311 | } |
| 312 | } |
| 313 | return cmd_sg_list; |
| 314 | clean: |
| 315 | cciss_free_sg_chain_blocks(cmd_sg_list, nr_cmds); |
| 316 | return NULL; |
| 317 | } |
| 318 | |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 319 | static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) |
| 320 | { |
| 321 | SGDescriptor_struct *chain_sg; |
| 322 | u64bit temp64; |
| 323 | |
| 324 | if (c->Header.SGTotal <= h->max_cmd_sgentries) |
| 325 | return; |
| 326 | |
| 327 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 328 | temp64.val32.lower = chain_sg->Addr.lower; |
| 329 | temp64.val32.upper = chain_sg->Addr.upper; |
| 330 | pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); |
| 331 | } |
| 332 | |
| 333 | static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, |
| 334 | SGDescriptor_struct *chain_block, int len) |
| 335 | { |
| 336 | SGDescriptor_struct *chain_sg; |
| 337 | u64bit temp64; |
| 338 | |
| 339 | chain_sg = &c->SG[h->max_cmd_sgentries - 1]; |
| 340 | chain_sg->Ext = CCISS_SG_CHAIN; |
| 341 | chain_sg->Len = len; |
| 342 | temp64.val = pci_map_single(h->pdev, chain_block, len, |
| 343 | PCI_DMA_TODEVICE); |
| 344 | chain_sg->Addr.lower = temp64.val32.lower; |
| 345 | chain_sg->Addr.upper = temp64.val32.upper; |
| 346 | } |
| 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | #include "cciss_scsi.c" /* For SCSI tape support */ |
| 349 | |
Alexander Beregalov | 1e6f2dc | 2009-09-24 16:15:38 +0200 | [diff] [blame] | 350 | static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG", |
| 351 | "UNKNOWN" |
| 352 | }; |
Kulikov Vasiliy | 0e4a9d0 | 2010-06-28 15:54:44 +0400 | [diff] [blame] | 353 | #define RAID_UNKNOWN (ARRAY_SIZE(raid_label)-1) |
Randy Dunlap | 0f5486e | 2006-12-29 16:48:31 -0800 | [diff] [blame] | 354 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | #ifdef CONFIG_PROC_FS |
| 356 | |
| 357 | /* |
| 358 | * Report information about this controller. |
| 359 | */ |
| 360 | #define ENG_GIG 1000000000 |
| 361 | #define ENG_GIG_FACTOR (ENG_GIG/512) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 362 | #define ENGAGE_SCSI "engage scsi" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
| 364 | static struct proc_dir_entry *proc_cciss; |
| 365 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 366 | static void cciss_seq_show_header(struct seq_file *seq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 368 | ctlr_info_t *h = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 370 | seq_printf(seq, "%s: HP %s Controller\n" |
| 371 | "Board ID: 0x%08lx\n" |
| 372 | "Firmware Version: %c%c%c%c\n" |
| 373 | "IRQ: %d\n" |
| 374 | "Logical drives: %d\n" |
| 375 | "Current Q depth: %d\n" |
| 376 | "Current # commands on controller: %d\n" |
| 377 | "Max Q depth since init: %d\n" |
| 378 | "Max # commands on controller since init: %d\n" |
| 379 | "Max SG entries since init: %d\n", |
| 380 | h->devname, |
| 381 | h->product_name, |
| 382 | (unsigned long)h->board_id, |
| 383 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 384 | h->firm_ver[3], (unsigned int)h->intr[PERF_MODE_INT], |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 385 | h->num_luns, |
| 386 | h->Qdepth, h->commands_outstanding, |
| 387 | h->maxQsinceinit, h->max_outstanding, h->maxSG); |
| 388 | |
| 389 | #ifdef CONFIG_CISS_SCSI_TAPE |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 390 | cciss_seq_tape_report(seq, h); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 391 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 392 | } |
| 393 | |
| 394 | static void *cciss_seq_start(struct seq_file *seq, loff_t *pos) |
| 395 | { |
| 396 | ctlr_info_t *h = seq->private; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 397 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | |
| 399 | /* prevent displaying bogus info during configuration |
| 400 | * or deconfiguration of a logical volume |
| 401 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 402 | spin_lock_irqsave(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 404 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 405 | return ERR_PTR(-EBUSY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
| 407 | h->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 408 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 410 | if (*pos == 0) |
| 411 | cciss_seq_show_header(seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 413 | return pos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | } |
| 415 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 416 | static int cciss_seq_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 418 | sector_t vol_sz, vol_sz_frac; |
| 419 | ctlr_info_t *h = seq->private; |
| 420 | unsigned ctlr = h->ctlr; |
| 421 | loff_t *pos = v; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 422 | drive_info_struct *drv = h->drv[*pos]; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 423 | |
| 424 | if (*pos > h->highest_lun) |
| 425 | return 0; |
| 426 | |
Stephen M. Cameron | 531c2dc | 2010-02-05 13:14:04 +0100 | [diff] [blame] | 427 | if (drv == NULL) /* it's possible for h->drv[] to have holes. */ |
| 428 | return 0; |
| 429 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 430 | if (drv->heads == 0) |
| 431 | return 0; |
| 432 | |
| 433 | vol_sz = drv->nr_blocks; |
| 434 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); |
| 435 | vol_sz_frac *= 100; |
| 436 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); |
| 437 | |
Stephen M. Cameron | fa52bec | 2009-09-17 13:48:15 -0500 | [diff] [blame] | 438 | if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 439 | drv->raid_level = RAID_UNKNOWN; |
| 440 | seq_printf(seq, "cciss/c%dd%d:" |
| 441 | "\t%4u.%02uGB\tRAID %s\n", |
| 442 | ctlr, (int) *pos, (int)vol_sz, (int)vol_sz_frac, |
| 443 | raid_label[drv->raid_level]); |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | static void *cciss_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 448 | { |
| 449 | ctlr_info_t *h = seq->private; |
| 450 | |
| 451 | if (*pos > h->highest_lun) |
| 452 | return NULL; |
| 453 | *pos += 1; |
| 454 | |
| 455 | return pos; |
| 456 | } |
| 457 | |
| 458 | static void cciss_seq_stop(struct seq_file *seq, void *v) |
| 459 | { |
| 460 | ctlr_info_t *h = seq->private; |
| 461 | |
| 462 | /* Only reset h->busy_configuring if we succeeded in setting |
| 463 | * it during cciss_seq_start. */ |
| 464 | if (v == ERR_PTR(-EBUSY)) |
| 465 | return; |
| 466 | |
| 467 | h->busy_configuring = 0; |
| 468 | } |
| 469 | |
James Morris | 88e9d34 | 2009-09-22 16:43:43 -0700 | [diff] [blame] | 470 | static const struct seq_operations cciss_seq_ops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 471 | .start = cciss_seq_start, |
| 472 | .show = cciss_seq_show, |
| 473 | .next = cciss_seq_next, |
| 474 | .stop = cciss_seq_stop, |
| 475 | }; |
| 476 | |
| 477 | static int cciss_seq_open(struct inode *inode, struct file *file) |
| 478 | { |
| 479 | int ret = seq_open(file, &cciss_seq_ops); |
| 480 | struct seq_file *seq = file->private_data; |
| 481 | |
| 482 | if (!ret) |
| 483 | seq->private = PDE(inode)->data; |
| 484 | |
| 485 | return ret; |
| 486 | } |
| 487 | |
| 488 | static ssize_t |
| 489 | cciss_proc_write(struct file *file, const char __user *buf, |
| 490 | size_t length, loff_t *ppos) |
| 491 | { |
| 492 | int err; |
| 493 | char *buffer; |
| 494 | |
| 495 | #ifndef CONFIG_CISS_SCSI_TAPE |
| 496 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | #endif |
| 498 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 499 | if (!buf || length > PAGE_SIZE - 1) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 500 | return -EINVAL; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 501 | |
| 502 | buffer = (char *)__get_free_page(GFP_KERNEL); |
| 503 | if (!buffer) |
| 504 | return -ENOMEM; |
| 505 | |
| 506 | err = -EFAULT; |
| 507 | if (copy_from_user(buffer, buf, length)) |
| 508 | goto out; |
| 509 | buffer[length] = '\0'; |
| 510 | |
| 511 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 512 | if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) { |
| 513 | struct seq_file *seq = file->private_data; |
| 514 | ctlr_info_t *h = seq->private; |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 515 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 516 | err = cciss_engage_scsi(h); |
Stephen M. Cameron | 8721c81 | 2009-11-12 12:50:06 -0600 | [diff] [blame] | 517 | if (err == 0) |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 518 | err = length; |
| 519 | } else |
| 520 | #endif /* CONFIG_CISS_SCSI_TAPE */ |
| 521 | err = -EINVAL; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 522 | /* might be nice to have "disengage" too, but it's not |
| 523 | safely possible. (only 1 module use count, lock issues.) */ |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 524 | |
| 525 | out: |
| 526 | free_page((unsigned long)buffer); |
| 527 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | } |
| 529 | |
Alexey Dobriyan | 828c095 | 2009-10-01 15:43:56 -0700 | [diff] [blame] | 530 | static const struct file_operations cciss_proc_fops = { |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 531 | .owner = THIS_MODULE, |
| 532 | .open = cciss_seq_open, |
| 533 | .read = seq_read, |
| 534 | .llseek = seq_lseek, |
| 535 | .release = seq_release, |
| 536 | .write = cciss_proc_write, |
| 537 | }; |
| 538 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 539 | static void __devinit cciss_procinit(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | { |
| 541 | struct proc_dir_entry *pde; |
| 542 | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 543 | if (proc_cciss == NULL) |
Alexey Dobriyan | 928b4d8 | 2008-04-29 01:01:44 -0700 | [diff] [blame] | 544 | proc_cciss = proc_mkdir("driver/cciss", NULL); |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 545 | if (!proc_cciss) |
| 546 | return; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 547 | pde = proc_create_data(h->devname, S_IWUSR | S_IRUSR | S_IRGRP | |
Mike Miller | 89b6e74 | 2008-02-21 08:54:03 +0100 | [diff] [blame] | 548 | S_IROTH, proc_cciss, |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 549 | &cciss_proc_fops, h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 551 | #endif /* CONFIG_PROC_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 553 | #define MAX_PRODUCT_NAME_LEN 19 |
| 554 | |
| 555 | #define to_hba(n) container_of(n, struct ctlr_info, dev) |
| 556 | #define to_drv(n) container_of(n, drive_info_struct, dev) |
| 557 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 558 | static ssize_t host_store_rescan(struct device *dev, |
| 559 | struct device_attribute *attr, |
| 560 | const char *buf, size_t count) |
| 561 | { |
| 562 | struct ctlr_info *h = to_hba(dev); |
| 563 | |
| 564 | add_to_scan_list(h); |
| 565 | wake_up_process(cciss_scan_thread); |
| 566 | wait_for_completion_interruptible(&h->scan_wait); |
| 567 | |
| 568 | return count; |
| 569 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 570 | static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 571 | |
| 572 | static ssize_t dev_show_unique_id(struct device *dev, |
| 573 | struct device_attribute *attr, |
| 574 | char *buf) |
| 575 | { |
| 576 | drive_info_struct *drv = to_drv(dev); |
| 577 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 578 | __u8 sn[16]; |
| 579 | unsigned long flags; |
| 580 | int ret = 0; |
| 581 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 582 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 583 | if (h->busy_configuring) |
| 584 | ret = -EBUSY; |
| 585 | else |
| 586 | memcpy(sn, drv->serial_no, sizeof(sn)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 587 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 588 | |
| 589 | if (ret) |
| 590 | return ret; |
| 591 | else |
| 592 | return snprintf(buf, 16 * 2 + 2, |
| 593 | "%02X%02X%02X%02X%02X%02X%02X%02X" |
| 594 | "%02X%02X%02X%02X%02X%02X%02X%02X\n", |
| 595 | sn[0], sn[1], sn[2], sn[3], |
| 596 | sn[4], sn[5], sn[6], sn[7], |
| 597 | sn[8], sn[9], sn[10], sn[11], |
| 598 | sn[12], sn[13], sn[14], sn[15]); |
| 599 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 600 | static DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 601 | |
| 602 | static ssize_t dev_show_vendor(struct device *dev, |
| 603 | struct device_attribute *attr, |
| 604 | char *buf) |
| 605 | { |
| 606 | drive_info_struct *drv = to_drv(dev); |
| 607 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 608 | char vendor[VENDOR_LEN + 1]; |
| 609 | unsigned long flags; |
| 610 | int ret = 0; |
| 611 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 612 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 613 | if (h->busy_configuring) |
| 614 | ret = -EBUSY; |
| 615 | else |
| 616 | memcpy(vendor, drv->vendor, VENDOR_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 617 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 618 | |
| 619 | if (ret) |
| 620 | return ret; |
| 621 | else |
| 622 | return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); |
| 623 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 624 | static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 625 | |
| 626 | static ssize_t dev_show_model(struct device *dev, |
| 627 | struct device_attribute *attr, |
| 628 | char *buf) |
| 629 | { |
| 630 | drive_info_struct *drv = to_drv(dev); |
| 631 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 632 | char model[MODEL_LEN + 1]; |
| 633 | unsigned long flags; |
| 634 | int ret = 0; |
| 635 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 636 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 637 | if (h->busy_configuring) |
| 638 | ret = -EBUSY; |
| 639 | else |
| 640 | memcpy(model, drv->model, MODEL_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 641 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 642 | |
| 643 | if (ret) |
| 644 | return ret; |
| 645 | else |
| 646 | return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); |
| 647 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 648 | static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 649 | |
| 650 | static ssize_t dev_show_rev(struct device *dev, |
| 651 | struct device_attribute *attr, |
| 652 | char *buf) |
| 653 | { |
| 654 | drive_info_struct *drv = to_drv(dev); |
| 655 | struct ctlr_info *h = to_hba(drv->dev.parent); |
| 656 | char rev[REV_LEN + 1]; |
| 657 | unsigned long flags; |
| 658 | int ret = 0; |
| 659 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 660 | spin_lock_irqsave(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 661 | if (h->busy_configuring) |
| 662 | ret = -EBUSY; |
| 663 | else |
| 664 | memcpy(rev, drv->rev, REV_LEN + 1); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 665 | spin_unlock_irqrestore(&h->lock, flags); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 666 | |
| 667 | if (ret) |
| 668 | return ret; |
| 669 | else |
| 670 | return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); |
| 671 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 672 | static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 673 | |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 674 | static ssize_t cciss_show_lunid(struct device *dev, |
| 675 | struct device_attribute *attr, char *buf) |
| 676 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 677 | drive_info_struct *drv = to_drv(dev); |
| 678 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 679 | unsigned long flags; |
| 680 | unsigned char lunid[8]; |
| 681 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 682 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 683 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 684 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 685 | return -EBUSY; |
| 686 | } |
| 687 | if (!drv->heads) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 688 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 689 | return -ENOTTY; |
| 690 | } |
| 691 | memcpy(lunid, drv->LunID, sizeof(lunid)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 692 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 693 | return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", |
| 694 | lunid[0], lunid[1], lunid[2], lunid[3], |
| 695 | lunid[4], lunid[5], lunid[6], lunid[7]); |
| 696 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 697 | static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL); |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 698 | |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 699 | static ssize_t cciss_show_raid_level(struct device *dev, |
| 700 | struct device_attribute *attr, char *buf) |
| 701 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 702 | drive_info_struct *drv = to_drv(dev); |
| 703 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 704 | int raid; |
| 705 | unsigned long flags; |
| 706 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 707 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 708 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 709 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 710 | return -EBUSY; |
| 711 | } |
| 712 | raid = drv->raid_level; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 713 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 714 | if (raid < 0 || raid > RAID_UNKNOWN) |
| 715 | raid = RAID_UNKNOWN; |
| 716 | |
| 717 | return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n", |
| 718 | raid_label[raid]); |
| 719 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 720 | static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL); |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 721 | |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 722 | static ssize_t cciss_show_usage_count(struct device *dev, |
| 723 | struct device_attribute *attr, char *buf) |
| 724 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 725 | drive_info_struct *drv = to_drv(dev); |
| 726 | struct ctlr_info *h = to_hba(drv->dev.parent); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 727 | unsigned long flags; |
| 728 | int count; |
| 729 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 730 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 731 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 732 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 733 | return -EBUSY; |
| 734 | } |
| 735 | count = drv->usage_count; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 736 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 737 | return snprintf(buf, 20, "%d\n", count); |
| 738 | } |
Alex Chiang | 8ba95c6 | 2009-11-12 12:49:14 -0600 | [diff] [blame] | 739 | static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 740 | |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 741 | static struct attribute *cciss_host_attrs[] = { |
| 742 | &dev_attr_rescan.attr, |
| 743 | NULL |
| 744 | }; |
| 745 | |
| 746 | static struct attribute_group cciss_host_attr_group = { |
| 747 | .attrs = cciss_host_attrs, |
| 748 | }; |
| 749 | |
Jens Axboe | 9f792d9 | 2009-09-18 22:24:21 +0200 | [diff] [blame] | 750 | static const struct attribute_group *cciss_host_attr_groups[] = { |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 751 | &cciss_host_attr_group, |
| 752 | NULL |
| 753 | }; |
| 754 | |
| 755 | static struct device_type cciss_host_type = { |
| 756 | .name = "cciss_host", |
| 757 | .groups = cciss_host_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 758 | .release = cciss_hba_release, |
Andrew Patterson | d6f4965 | 2009-09-17 13:47:03 -0500 | [diff] [blame] | 759 | }; |
| 760 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 761 | static struct attribute *cciss_dev_attrs[] = { |
| 762 | &dev_attr_unique_id.attr, |
| 763 | &dev_attr_model.attr, |
| 764 | &dev_attr_vendor.attr, |
| 765 | &dev_attr_rev.attr, |
Stephen M. Cameron | ce84a8a | 2009-09-17 13:48:10 -0500 | [diff] [blame] | 766 | &dev_attr_lunid.attr, |
Stephen M. Cameron | 3ff1111 | 2009-09-17 13:48:21 -0500 | [diff] [blame] | 767 | &dev_attr_raid_level.attr, |
Stephen M. Cameron | e272afe | 2009-09-17 13:48:26 -0500 | [diff] [blame] | 768 | &dev_attr_usage_count.attr, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 769 | NULL |
| 770 | }; |
| 771 | |
| 772 | static struct attribute_group cciss_dev_attr_group = { |
| 773 | .attrs = cciss_dev_attrs, |
| 774 | }; |
| 775 | |
David Brownell | a4dbd67 | 2009-06-24 10:06:31 -0700 | [diff] [blame] | 776 | static const struct attribute_group *cciss_dev_attr_groups[] = { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 777 | &cciss_dev_attr_group, |
| 778 | NULL |
| 779 | }; |
| 780 | |
| 781 | static struct device_type cciss_dev_type = { |
| 782 | .name = "cciss_device", |
| 783 | .groups = cciss_dev_attr_groups, |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 784 | .release = cciss_device_release, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 785 | }; |
| 786 | |
| 787 | static struct bus_type cciss_bus_type = { |
| 788 | .name = "cciss", |
| 789 | }; |
| 790 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 791 | /* |
| 792 | * cciss_hba_release is called when the reference count |
| 793 | * of h->dev goes to zero. |
| 794 | */ |
| 795 | static void cciss_hba_release(struct device *dev) |
| 796 | { |
| 797 | /* |
| 798 | * nothing to do, but need this to avoid a warning |
| 799 | * about not having a release handler from lib/kref.c. |
| 800 | */ |
| 801 | } |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 802 | |
| 803 | /* |
| 804 | * Initialize sysfs entry for each controller. This sets up and registers |
| 805 | * the 'cciss#' directory for each individual controller under |
| 806 | * /sys/bus/pci/devices/<dev>/. |
| 807 | */ |
| 808 | static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) |
| 809 | { |
| 810 | device_initialize(&h->dev); |
| 811 | h->dev.type = &cciss_host_type; |
| 812 | h->dev.bus = &cciss_bus_type; |
| 813 | dev_set_name(&h->dev, "%s", h->devname); |
| 814 | h->dev.parent = &h->pdev->dev; |
| 815 | |
| 816 | return device_add(&h->dev); |
| 817 | } |
| 818 | |
| 819 | /* |
| 820 | * Remove sysfs entries for an hba. |
| 821 | */ |
| 822 | static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) |
| 823 | { |
| 824 | device_del(&h->dev); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 825 | put_device(&h->dev); /* final put. */ |
| 826 | } |
| 827 | |
| 828 | /* cciss_device_release is called when the reference count |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 829 | * of h->drv[x]dev goes to zero. |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 830 | */ |
| 831 | static void cciss_device_release(struct device *dev) |
| 832 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 833 | drive_info_struct *drv = to_drv(dev); |
| 834 | kfree(drv); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 835 | } |
| 836 | |
| 837 | /* |
| 838 | * Initialize sysfs for each logical drive. This sets up and registers |
| 839 | * the 'c#d#' directory for each individual logical drive under |
| 840 | * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from |
| 841 | * /sys/block/cciss!c#d# to this entry. |
| 842 | */ |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 843 | static long cciss_create_ld_sysfs_entry(struct ctlr_info *h, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 844 | int drv_index) |
| 845 | { |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 846 | struct device *dev; |
| 847 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 848 | if (h->drv[drv_index]->device_initialized) |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 849 | return 0; |
| 850 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 851 | dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 852 | device_initialize(dev); |
| 853 | dev->type = &cciss_dev_type; |
| 854 | dev->bus = &cciss_bus_type; |
| 855 | dev_set_name(dev, "c%dd%d", h->ctlr, drv_index); |
| 856 | dev->parent = &h->dev; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 857 | h->drv[drv_index]->device_initialized = 1; |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 858 | return device_add(dev); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 859 | } |
| 860 | |
| 861 | /* |
| 862 | * Remove sysfs entries for a logical drive. |
| 863 | */ |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 864 | static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index, |
| 865 | int ctlr_exiting) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 866 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 867 | struct device *dev = &h->drv[drv_index]->dev; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 868 | |
| 869 | /* special case for c*d0, we only destroy it on controller exit */ |
| 870 | if (drv_index == 0 && !ctlr_exiting) |
| 871 | return; |
| 872 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 873 | device_del(dev); |
| 874 | put_device(dev); /* the "final" put. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 875 | h->drv[drv_index] = NULL; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 876 | } |
| 877 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 878 | /* |
| 879 | * For operations that cannot sleep, a command block is allocated at init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 881 | * which ones are free or in use. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 882 | */ |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 883 | static CommandList_struct *cmd_alloc(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | { |
| 885 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 886 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | u64bit temp64; |
| 888 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 889 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 890 | do { |
| 891 | i = find_first_zero_bit(h->cmd_pool_bits, h->nr_cmds); |
| 892 | if (i == h->nr_cmds) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 893 | return NULL; |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 894 | } while (test_and_set_bit(i & (BITS_PER_LONG - 1), |
| 895 | h->cmd_pool_bits + (i / BITS_PER_LONG)) != 0); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 896 | c = h->cmd_pool + i; |
| 897 | memset(c, 0, sizeof(CommandList_struct)); |
| 898 | cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(CommandList_struct); |
| 899 | c->err_info = h->errinfo_pool + i; |
| 900 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 901 | err_dma_handle = h->errinfo_pool_dhandle |
| 902 | + i * sizeof(ErrorInfo_struct); |
| 903 | h->nr_allocs++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 905 | c->cmdindex = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 907 | INIT_HLIST_NODE(&c->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | c->busaddr = (__u32) cmd_dma_handle; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 909 | temp64.val = (__u64) err_dma_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 911 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 912 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 913 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | c->ctlr = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 915 | return c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | } |
| 917 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 918 | /* allocate a command using pci_alloc_consistent, used for ioctls, |
| 919 | * etc., not for the main i/o path. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | */ |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 921 | static CommandList_struct *cmd_special_alloc(ctlr_info_t *h) |
| 922 | { |
| 923 | CommandList_struct *c; |
| 924 | u64bit temp64; |
| 925 | dma_addr_t cmd_dma_handle, err_dma_handle; |
| 926 | |
| 927 | c = (CommandList_struct *) pci_alloc_consistent(h->pdev, |
| 928 | sizeof(CommandList_struct), &cmd_dma_handle); |
| 929 | if (c == NULL) |
| 930 | return NULL; |
| 931 | memset(c, 0, sizeof(CommandList_struct)); |
| 932 | |
| 933 | c->cmdindex = -1; |
| 934 | |
| 935 | c->err_info = (ErrorInfo_struct *) |
| 936 | pci_alloc_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 937 | &err_dma_handle); |
| 938 | |
| 939 | if (c->err_info == NULL) { |
| 940 | pci_free_consistent(h->pdev, |
| 941 | sizeof(CommandList_struct), c, cmd_dma_handle); |
| 942 | return NULL; |
| 943 | } |
| 944 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 945 | |
| 946 | INIT_HLIST_NODE(&c->list); |
| 947 | c->busaddr = (__u32) cmd_dma_handle; |
| 948 | temp64.val = (__u64) err_dma_handle; |
| 949 | c->ErrDesc.Addr.lower = temp64.val32.lower; |
| 950 | c->ErrDesc.Addr.upper = temp64.val32.upper; |
| 951 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); |
| 952 | |
| 953 | c->ctlr = h->ctlr; |
| 954 | return c; |
| 955 | } |
| 956 | |
| 957 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | { |
| 959 | int i; |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 960 | |
| 961 | i = c - h->cmd_pool; |
| 962 | clear_bit(i & (BITS_PER_LONG - 1), |
| 963 | h->cmd_pool_bits + (i / BITS_PER_LONG)); |
| 964 | h->nr_frees++; |
| 965 | } |
| 966 | |
| 967 | static void cmd_special_free(ctlr_info_t *h, CommandList_struct *c) |
| 968 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | u64bit temp64; |
| 970 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 971 | temp64.val32.lower = c->ErrDesc.Addr.lower; |
| 972 | temp64.val32.upper = c->ErrDesc.Addr.upper; |
| 973 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), |
| 974 | c->err_info, (dma_addr_t) temp64.val); |
| 975 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), |
| 976 | c, (dma_addr_t) c->busaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | } |
| 978 | |
| 979 | static inline ctlr_info_t *get_host(struct gendisk *disk) |
| 980 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 981 | return disk->queue->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | } |
| 983 | |
| 984 | static inline drive_info_struct *get_drv(struct gendisk *disk) |
| 985 | { |
| 986 | return disk->private_data; |
| 987 | } |
| 988 | |
| 989 | /* |
| 990 | * Open. Make sure the device is really there. |
| 991 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 992 | static int cciss_open(struct block_device *bdev, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 994 | ctlr_info_t *h = get_host(bdev->bd_disk); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 995 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 997 | dev_dbg(&h->pdev->dev, "cciss_open %s\n", bdev->bd_disk->disk_name); |
Stephen M. Cameron | 2e04398 | 2009-09-17 13:48:05 -0500 | [diff] [blame] | 998 | if (drv->busy_configuring) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 999 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | /* |
| 1001 | * Root is allowed to open raw volume zero even if it's not configured |
| 1002 | * so array config can still work. Root is also allowed to open any |
| 1003 | * volume that has a LUN ID, so it can issue IOCTL to reread the |
| 1004 | * disk information. I don't think I really like this |
| 1005 | * but I'm already using way to many device nodes to claim another one |
| 1006 | * for "raw controller". |
| 1007 | */ |
Mike Miller | 7a06f78 | 2006-12-06 20:35:08 -0800 | [diff] [blame] | 1008 | if (drv->heads == 0) { |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1009 | if (MINOR(bdev->bd_dev) != 0) { /* not node 0? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | /* if not node 0 make sure it is a partition = 0 */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1011 | if (MINOR(bdev->bd_dev) & 0x0f) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1012 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | /* if it is, make sure we have a LUN ID */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1014 | } else if (memcmp(drv->LunID, CTLR_LUNID, |
| 1015 | sizeof(drv->LunID))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | return -ENXIO; |
| 1017 | } |
| 1018 | } |
| 1019 | if (!capable(CAP_SYS_ADMIN)) |
| 1020 | return -EPERM; |
| 1021 | } |
| 1022 | drv->usage_count++; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1023 | h->usage_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | return 0; |
| 1025 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1026 | |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1027 | static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode) |
| 1028 | { |
| 1029 | int ret; |
| 1030 | |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1031 | mutex_lock(&cciss_mutex); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1032 | ret = cciss_open(bdev, mode); |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1033 | mutex_unlock(&cciss_mutex); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1034 | |
| 1035 | return ret; |
| 1036 | } |
| 1037 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | /* |
| 1039 | * Close. Sync first. |
| 1040 | */ |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1041 | static int cciss_release(struct gendisk *disk, fmode_t mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1043 | ctlr_info_t *h; |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1044 | drive_info_struct *drv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1046 | mutex_lock(&cciss_mutex); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1047 | h = get_host(disk); |
Arnd Bergmann | 6e9624b | 2010-08-07 18:25:34 +0200 | [diff] [blame] | 1048 | drv = get_drv(disk); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1049 | dev_dbg(&h->pdev->dev, "cciss_release %s\n", disk->disk_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | drv->usage_count--; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1051 | h->usage_count--; |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1052 | mutex_unlock(&cciss_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | return 0; |
| 1054 | } |
| 1055 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1056 | static int do_ioctl(struct block_device *bdev, fmode_t mode, |
| 1057 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | { |
| 1059 | int ret; |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1060 | mutex_lock(&cciss_mutex); |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1061 | ret = cciss_ioctl(bdev, mode, cmd, arg); |
Arnd Bergmann | 2a48fc0 | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 1062 | mutex_unlock(&cciss_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | return ret; |
| 1064 | } |
| 1065 | |
Arnd Bergmann | 8a6cfeb | 2010-07-08 10:18:46 +0200 | [diff] [blame] | 1066 | #ifdef CONFIG_COMPAT |
| 1067 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1068 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1069 | unsigned cmd, unsigned long arg); |
| 1070 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1071 | unsigned cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1073 | static int cciss_compat_ioctl(struct block_device *bdev, fmode_t mode, |
| 1074 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | { |
| 1076 | switch (cmd) { |
| 1077 | case CCISS_GETPCIINFO: |
| 1078 | case CCISS_GETINTINFO: |
| 1079 | case CCISS_SETINTINFO: |
| 1080 | case CCISS_GETNODENAME: |
| 1081 | case CCISS_SETNODENAME: |
| 1082 | case CCISS_GETHEARTBEAT: |
| 1083 | case CCISS_GETBUSTYPES: |
| 1084 | case CCISS_GETFIRMVER: |
| 1085 | case CCISS_GETDRIVVER: |
| 1086 | case CCISS_REVALIDVOLS: |
| 1087 | case CCISS_DEREGDISK: |
| 1088 | case CCISS_REGNEWDISK: |
| 1089 | case CCISS_REGNEWD: |
| 1090 | case CCISS_RESCANDISK: |
| 1091 | case CCISS_GETLUNINFO: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1092 | return do_ioctl(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | |
| 1094 | case CCISS_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1095 | return cciss_ioctl32_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | case CCISS_BIG_PASSTHRU32: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1097 | return cciss_ioctl32_big_passthru(bdev, mode, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | |
| 1099 | default: |
| 1100 | return -ENOIOCTLCMD; |
| 1101 | } |
| 1102 | } |
| 1103 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1104 | static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, |
| 1105 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | { |
| 1107 | IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1108 | (IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | IOCTL_Command_struct arg64; |
| 1110 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); |
| 1111 | int err; |
| 1112 | u32 cp; |
| 1113 | |
| 1114 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1115 | err |= |
| 1116 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1117 | sizeof(arg64.LUN_info)); |
| 1118 | err |= |
| 1119 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1120 | sizeof(arg64.Request)); |
| 1121 | err |= |
| 1122 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1123 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1125 | err |= get_user(cp, &arg32->buf); |
| 1126 | arg64.buf = compat_ptr(cp); |
| 1127 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1128 | |
| 1129 | if (err) |
| 1130 | return -EFAULT; |
| 1131 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1132 | err = do_ioctl(bdev, mode, CCISS_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | if (err) |
| 1134 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1135 | err |= |
| 1136 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1137 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | if (err) |
| 1139 | return -EFAULT; |
| 1140 | return err; |
| 1141 | } |
| 1142 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1143 | static int cciss_ioctl32_big_passthru(struct block_device *bdev, fmode_t mode, |
| 1144 | unsigned cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | { |
| 1146 | BIG_IOCTL32_Command_struct __user *arg32 = |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1147 | (BIG_IOCTL32_Command_struct __user *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | BIG_IOCTL_Command_struct arg64; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1149 | BIG_IOCTL_Command_struct __user *p = |
| 1150 | compat_alloc_user_space(sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | int err; |
| 1152 | u32 cp; |
| 1153 | |
Vasiliy Kulikov | 7ab5118 | 2010-10-28 06:31:55 -0600 | [diff] [blame] | 1154 | memset(&arg64, 0, sizeof(arg64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | err = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1156 | err |= |
| 1157 | copy_from_user(&arg64.LUN_info, &arg32->LUN_info, |
| 1158 | sizeof(arg64.LUN_info)); |
| 1159 | err |= |
| 1160 | copy_from_user(&arg64.Request, &arg32->Request, |
| 1161 | sizeof(arg64.Request)); |
| 1162 | err |= |
| 1163 | copy_from_user(&arg64.error_info, &arg32->error_info, |
| 1164 | sizeof(arg64.error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | err |= get_user(arg64.buf_size, &arg32->buf_size); |
| 1166 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); |
| 1167 | err |= get_user(cp, &arg32->buf); |
| 1168 | arg64.buf = compat_ptr(cp); |
| 1169 | err |= copy_to_user(p, &arg64, sizeof(arg64)); |
| 1170 | |
| 1171 | if (err) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1172 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1174 | err = do_ioctl(bdev, mode, CCISS_BIG_PASSTHRU, (unsigned long)p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | if (err) |
| 1176 | return err; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1177 | err |= |
| 1178 | copy_in_user(&arg32->error_info, &p->error_info, |
| 1179 | sizeof(arg32->error_info)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | if (err) |
| 1181 | return -EFAULT; |
| 1182 | return err; |
| 1183 | } |
| 1184 | #endif |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 1185 | |
| 1186 | static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 1187 | { |
| 1188 | drive_info_struct *drv = get_drv(bdev->bd_disk); |
| 1189 | |
| 1190 | if (!drv->cylinders) |
| 1191 | return -ENXIO; |
| 1192 | |
| 1193 | geo->heads = drv->heads; |
| 1194 | geo->sectors = drv->sectors; |
| 1195 | geo->cylinders = drv->cylinders; |
| 1196 | return 0; |
| 1197 | } |
| 1198 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1199 | static void check_ioctl_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1200 | { |
| 1201 | if (c->err_info->CommandStatus == CMD_TARGET_STATUS && |
| 1202 | c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1203 | (void)check_for_unit_attention(h, c); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 1204 | } |
Stephen M. Cameron | 0a25a5a | 2010-08-26 13:55:34 -0500 | [diff] [blame] | 1205 | |
| 1206 | static int cciss_getpciinfo(ctlr_info_t *h, void __user *argp) |
| 1207 | { |
| 1208 | cciss_pci_info_struct pciinfo; |
| 1209 | |
| 1210 | if (!argp) |
| 1211 | return -EINVAL; |
| 1212 | pciinfo.domain = pci_domain_nr(h->pdev->bus); |
| 1213 | pciinfo.bus = h->pdev->bus->number; |
| 1214 | pciinfo.dev_fn = h->pdev->devfn; |
| 1215 | pciinfo.board_id = h->board_id; |
| 1216 | if (copy_to_user(argp, &pciinfo, sizeof(cciss_pci_info_struct))) |
| 1217 | return -EFAULT; |
| 1218 | return 0; |
| 1219 | } |
| 1220 | |
Stephen M. Cameron | 576e661 | 2010-08-26 13:55:39 -0500 | [diff] [blame] | 1221 | static int cciss_getintinfo(ctlr_info_t *h, void __user *argp) |
| 1222 | { |
| 1223 | cciss_coalint_struct intinfo; |
| 1224 | |
| 1225 | if (!argp) |
| 1226 | return -EINVAL; |
| 1227 | intinfo.delay = readl(&h->cfgtable->HostWrite.CoalIntDelay); |
| 1228 | intinfo.count = readl(&h->cfgtable->HostWrite.CoalIntCount); |
| 1229 | if (copy_to_user |
| 1230 | (argp, &intinfo, sizeof(cciss_coalint_struct))) |
| 1231 | return -EFAULT; |
| 1232 | return 0; |
| 1233 | } |
| 1234 | |
Stephen M. Cameron | 4c800ee | 2010-08-26 13:55:44 -0500 | [diff] [blame] | 1235 | static int cciss_setintinfo(ctlr_info_t *h, void __user *argp) |
| 1236 | { |
| 1237 | cciss_coalint_struct intinfo; |
| 1238 | unsigned long flags; |
| 1239 | int i; |
| 1240 | |
| 1241 | if (!argp) |
| 1242 | return -EINVAL; |
| 1243 | if (!capable(CAP_SYS_ADMIN)) |
| 1244 | return -EPERM; |
| 1245 | if (copy_from_user(&intinfo, argp, sizeof(intinfo))) |
| 1246 | return -EFAULT; |
| 1247 | if ((intinfo.delay == 0) && (intinfo.count == 0)) |
| 1248 | return -EINVAL; |
| 1249 | spin_lock_irqsave(&h->lock, flags); |
| 1250 | /* Update the field, and then ring the doorbell */ |
| 1251 | writel(intinfo.delay, &(h->cfgtable->HostWrite.CoalIntDelay)); |
| 1252 | writel(intinfo.count, &(h->cfgtable->HostWrite.CoalIntCount)); |
| 1253 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 1254 | |
| 1255 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1256 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 1257 | break; |
| 1258 | udelay(1000); /* delay and try again */ |
| 1259 | } |
| 1260 | spin_unlock_irqrestore(&h->lock, flags); |
| 1261 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1262 | return -EAGAIN; |
| 1263 | return 0; |
| 1264 | } |
| 1265 | |
Stephen M. Cameron | 2521610 | 2010-08-26 13:55:49 -0500 | [diff] [blame] | 1266 | static int cciss_getnodename(ctlr_info_t *h, void __user *argp) |
| 1267 | { |
| 1268 | NodeName_type NodeName; |
| 1269 | int i; |
| 1270 | |
| 1271 | if (!argp) |
| 1272 | return -EINVAL; |
| 1273 | for (i = 0; i < 16; i++) |
| 1274 | NodeName[i] = readb(&h->cfgtable->ServerName[i]); |
| 1275 | if (copy_to_user(argp, NodeName, sizeof(NodeName_type))) |
| 1276 | return -EFAULT; |
| 1277 | return 0; |
| 1278 | } |
| 1279 | |
Stephen M. Cameron | 4f43f32 | 2010-08-26 13:55:54 -0500 | [diff] [blame] | 1280 | static int cciss_setnodename(ctlr_info_t *h, void __user *argp) |
| 1281 | { |
| 1282 | NodeName_type NodeName; |
| 1283 | unsigned long flags; |
| 1284 | int i; |
| 1285 | |
| 1286 | if (!argp) |
| 1287 | return -EINVAL; |
| 1288 | if (!capable(CAP_SYS_ADMIN)) |
| 1289 | return -EPERM; |
| 1290 | if (copy_from_user(NodeName, argp, sizeof(NodeName_type))) |
| 1291 | return -EFAULT; |
| 1292 | spin_lock_irqsave(&h->lock, flags); |
| 1293 | /* Update the field, and then ring the doorbell */ |
| 1294 | for (i = 0; i < 16; i++) |
| 1295 | writeb(NodeName[i], &h->cfgtable->ServerName[i]); |
| 1296 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 1297 | for (i = 0; i < MAX_IOCTL_CONFIG_WAIT; i++) { |
| 1298 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 1299 | break; |
| 1300 | udelay(1000); /* delay and try again */ |
| 1301 | } |
| 1302 | spin_unlock_irqrestore(&h->lock, flags); |
| 1303 | if (i >= MAX_IOCTL_CONFIG_WAIT) |
| 1304 | return -EAGAIN; |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
Stephen M. Cameron | 93c7493 | 2010-08-26 13:55:59 -0500 | [diff] [blame] | 1308 | static int cciss_getheartbeat(ctlr_info_t *h, void __user *argp) |
| 1309 | { |
| 1310 | Heartbeat_type heartbeat; |
| 1311 | |
| 1312 | if (!argp) |
| 1313 | return -EINVAL; |
| 1314 | heartbeat = readl(&h->cfgtable->HeartBeat); |
| 1315 | if (copy_to_user(argp, &heartbeat, sizeof(Heartbeat_type))) |
| 1316 | return -EFAULT; |
| 1317 | return 0; |
| 1318 | } |
| 1319 | |
Stephen M. Cameron | d18dfad | 2010-08-26 13:56:05 -0500 | [diff] [blame] | 1320 | static int cciss_getbustypes(ctlr_info_t *h, void __user *argp) |
| 1321 | { |
| 1322 | BusTypes_type BusTypes; |
| 1323 | |
| 1324 | if (!argp) |
| 1325 | return -EINVAL; |
| 1326 | BusTypes = readl(&h->cfgtable->BusTypes); |
| 1327 | if (copy_to_user(argp, &BusTypes, sizeof(BusTypes_type))) |
| 1328 | return -EFAULT; |
| 1329 | return 0; |
| 1330 | } |
| 1331 | |
Stephen M. Cameron | 8a4f7fb | 2010-08-26 13:56:10 -0500 | [diff] [blame] | 1332 | static int cciss_getfirmver(ctlr_info_t *h, void __user *argp) |
| 1333 | { |
| 1334 | FirmwareVer_type firmware; |
| 1335 | |
| 1336 | if (!argp) |
| 1337 | return -EINVAL; |
| 1338 | memcpy(firmware, h->firm_ver, 4); |
| 1339 | |
| 1340 | if (copy_to_user |
| 1341 | (argp, firmware, sizeof(FirmwareVer_type))) |
| 1342 | return -EFAULT; |
| 1343 | return 0; |
| 1344 | } |
| 1345 | |
Stephen M. Cameron | c525919 | 2010-08-26 13:56:15 -0500 | [diff] [blame] | 1346 | static int cciss_getdrivver(ctlr_info_t *h, void __user *argp) |
| 1347 | { |
| 1348 | DriverVer_type DriverVer = DRIVER_VERSION; |
| 1349 | |
| 1350 | if (!argp) |
| 1351 | return -EINVAL; |
| 1352 | if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type))) |
| 1353 | return -EFAULT; |
| 1354 | return 0; |
| 1355 | } |
| 1356 | |
Stephen M. Cameron | 0894b32 | 2010-08-26 13:56:20 -0500 | [diff] [blame] | 1357 | static int cciss_getluninfo(ctlr_info_t *h, |
| 1358 | struct gendisk *disk, void __user *argp) |
| 1359 | { |
| 1360 | LogvolInfo_struct luninfo; |
| 1361 | drive_info_struct *drv = get_drv(disk); |
| 1362 | |
| 1363 | if (!argp) |
| 1364 | return -EINVAL; |
| 1365 | memcpy(&luninfo.LunID, drv->LunID, sizeof(luninfo.LunID)); |
| 1366 | luninfo.num_opens = drv->usage_count; |
| 1367 | luninfo.num_parts = 0; |
| 1368 | if (copy_to_user(argp, &luninfo, sizeof(LogvolInfo_struct))) |
| 1369 | return -EFAULT; |
| 1370 | return 0; |
| 1371 | } |
| 1372 | |
Stephen M. Cameron | f32f125 | 2010-08-26 13:56:25 -0500 | [diff] [blame] | 1373 | static int cciss_passthru(ctlr_info_t *h, void __user *argp) |
| 1374 | { |
| 1375 | IOCTL_Command_struct iocommand; |
| 1376 | CommandList_struct *c; |
| 1377 | char *buff = NULL; |
| 1378 | u64bit temp64; |
| 1379 | DECLARE_COMPLETION_ONSTACK(wait); |
| 1380 | |
| 1381 | if (!argp) |
| 1382 | return -EINVAL; |
| 1383 | |
| 1384 | if (!capable(CAP_SYS_RAWIO)) |
| 1385 | return -EPERM; |
| 1386 | |
| 1387 | if (copy_from_user |
| 1388 | (&iocommand, argp, sizeof(IOCTL_Command_struct))) |
| 1389 | return -EFAULT; |
| 1390 | if ((iocommand.buf_size < 1) && |
| 1391 | (iocommand.Request.Type.Direction != XFER_NONE)) { |
| 1392 | return -EINVAL; |
| 1393 | } |
| 1394 | if (iocommand.buf_size > 0) { |
| 1395 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); |
| 1396 | if (buff == NULL) |
| 1397 | return -EFAULT; |
| 1398 | } |
| 1399 | if (iocommand.Request.Type.Direction == XFER_WRITE) { |
| 1400 | /* Copy the data into the buffer we created */ |
| 1401 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) { |
| 1402 | kfree(buff); |
| 1403 | return -EFAULT; |
| 1404 | } |
| 1405 | } else { |
| 1406 | memset(buff, 0, iocommand.buf_size); |
| 1407 | } |
| 1408 | c = cmd_special_alloc(h); |
| 1409 | if (!c) { |
| 1410 | kfree(buff); |
| 1411 | return -ENOMEM; |
| 1412 | } |
| 1413 | /* Fill in the command type */ |
| 1414 | c->cmd_type = CMD_IOCTL_PEND; |
| 1415 | /* Fill in Command Header */ |
| 1416 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
| 1417 | if (iocommand.buf_size > 0) { /* buffer to fill */ |
| 1418 | c->Header.SGList = 1; |
| 1419 | c->Header.SGTotal = 1; |
| 1420 | } else { /* no buffers to fill */ |
| 1421 | c->Header.SGList = 0; |
| 1422 | c->Header.SGTotal = 0; |
| 1423 | } |
| 1424 | c->Header.LUN = iocommand.LUN_info; |
| 1425 | /* use the kernel address the cmd block for tag */ |
| 1426 | c->Header.Tag.lower = c->busaddr; |
| 1427 | |
| 1428 | /* Fill in Request block */ |
| 1429 | c->Request = iocommand.Request; |
| 1430 | |
| 1431 | /* Fill in the scatter gather information */ |
| 1432 | if (iocommand.buf_size > 0) { |
| 1433 | temp64.val = pci_map_single(h->pdev, buff, |
| 1434 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); |
| 1435 | c->SG[0].Addr.lower = temp64.val32.lower; |
| 1436 | c->SG[0].Addr.upper = temp64.val32.upper; |
| 1437 | c->SG[0].Len = iocommand.buf_size; |
| 1438 | c->SG[0].Ext = 0; /* we are not chaining */ |
| 1439 | } |
| 1440 | c->waiting = &wait; |
| 1441 | |
| 1442 | enqueue_cmd_and_start_io(h, c); |
| 1443 | wait_for_completion(&wait); |
| 1444 | |
| 1445 | /* unlock the buffers from DMA */ |
| 1446 | temp64.val32.lower = c->SG[0].Addr.lower; |
| 1447 | temp64.val32.upper = c->SG[0].Addr.upper; |
| 1448 | pci_unmap_single(h->pdev, (dma_addr_t) temp64.val, iocommand.buf_size, |
| 1449 | PCI_DMA_BIDIRECTIONAL); |
| 1450 | check_ioctl_unit_attention(h, c); |
| 1451 | |
| 1452 | /* Copy the error information out */ |
| 1453 | iocommand.error_info = *(c->err_info); |
| 1454 | if (copy_to_user(argp, &iocommand, sizeof(IOCTL_Command_struct))) { |
| 1455 | kfree(buff); |
| 1456 | cmd_special_free(h, c); |
| 1457 | return -EFAULT; |
| 1458 | } |
| 1459 | |
| 1460 | if (iocommand.Request.Type.Direction == XFER_READ) { |
| 1461 | /* Copy the data out of the buffer we created */ |
| 1462 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) { |
| 1463 | kfree(buff); |
| 1464 | cmd_special_free(h, c); |
| 1465 | return -EFAULT; |
| 1466 | } |
| 1467 | } |
| 1468 | kfree(buff); |
| 1469 | cmd_special_free(h, c); |
| 1470 | return 0; |
| 1471 | } |
| 1472 | |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1473 | static int cciss_bigpassthru(ctlr_info_t *h, void __user *argp) |
| 1474 | { |
| 1475 | BIG_IOCTL_Command_struct *ioc; |
| 1476 | CommandList_struct *c; |
| 1477 | unsigned char **buff = NULL; |
| 1478 | int *buff_size = NULL; |
| 1479 | u64bit temp64; |
| 1480 | BYTE sg_used = 0; |
| 1481 | int status = 0; |
| 1482 | int i; |
| 1483 | DECLARE_COMPLETION_ONSTACK(wait); |
| 1484 | __u32 left; |
| 1485 | __u32 sz; |
| 1486 | BYTE __user *data_ptr; |
| 1487 | |
| 1488 | if (!argp) |
| 1489 | return -EINVAL; |
| 1490 | if (!capable(CAP_SYS_RAWIO)) |
| 1491 | return -EPERM; |
| 1492 | ioc = (BIG_IOCTL_Command_struct *) |
| 1493 | kmalloc(sizeof(*ioc), GFP_KERNEL); |
| 1494 | if (!ioc) { |
| 1495 | status = -ENOMEM; |
| 1496 | goto cleanup1; |
| 1497 | } |
| 1498 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { |
| 1499 | status = -EFAULT; |
| 1500 | goto cleanup1; |
| 1501 | } |
| 1502 | if ((ioc->buf_size < 1) && |
| 1503 | (ioc->Request.Type.Direction != XFER_NONE)) { |
| 1504 | status = -EINVAL; |
| 1505 | goto cleanup1; |
| 1506 | } |
| 1507 | /* Check kmalloc limits using all SGs */ |
| 1508 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { |
| 1509 | status = -EINVAL; |
| 1510 | goto cleanup1; |
| 1511 | } |
| 1512 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { |
| 1513 | status = -EINVAL; |
| 1514 | goto cleanup1; |
| 1515 | } |
| 1516 | buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); |
| 1517 | if (!buff) { |
| 1518 | status = -ENOMEM; |
| 1519 | goto cleanup1; |
| 1520 | } |
| 1521 | buff_size = kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); |
| 1522 | if (!buff_size) { |
| 1523 | status = -ENOMEM; |
| 1524 | goto cleanup1; |
| 1525 | } |
| 1526 | left = ioc->buf_size; |
| 1527 | data_ptr = ioc->buf; |
| 1528 | while (left) { |
| 1529 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; |
| 1530 | buff_size[sg_used] = sz; |
| 1531 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); |
| 1532 | if (buff[sg_used] == NULL) { |
| 1533 | status = -ENOMEM; |
| 1534 | goto cleanup1; |
| 1535 | } |
| 1536 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
| 1537 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { |
| 1538 | status = -EFAULT; |
| 1539 | goto cleanup1; |
| 1540 | } |
| 1541 | } else { |
| 1542 | memset(buff[sg_used], 0, sz); |
| 1543 | } |
| 1544 | left -= sz; |
| 1545 | data_ptr += sz; |
| 1546 | sg_used++; |
| 1547 | } |
| 1548 | c = cmd_special_alloc(h); |
| 1549 | if (!c) { |
| 1550 | status = -ENOMEM; |
| 1551 | goto cleanup1; |
| 1552 | } |
| 1553 | c->cmd_type = CMD_IOCTL_PEND; |
| 1554 | c->Header.ReplyQueue = 0; |
Stephen M. Cameron | fcfb5c0 | 2010-08-26 13:56:35 -0500 | [diff] [blame] | 1555 | c->Header.SGList = sg_used; |
| 1556 | c->Header.SGTotal = sg_used; |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1557 | c->Header.LUN = ioc->LUN_info; |
| 1558 | c->Header.Tag.lower = c->busaddr; |
| 1559 | |
| 1560 | c->Request = ioc->Request; |
Stephen M. Cameron | fcfb5c0 | 2010-08-26 13:56:35 -0500 | [diff] [blame] | 1561 | for (i = 0; i < sg_used; i++) { |
| 1562 | temp64.val = pci_map_single(h->pdev, buff[i], buff_size[i], |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1563 | PCI_DMA_BIDIRECTIONAL); |
Stephen M. Cameron | fcfb5c0 | 2010-08-26 13:56:35 -0500 | [diff] [blame] | 1564 | c->SG[i].Addr.lower = temp64.val32.lower; |
| 1565 | c->SG[i].Addr.upper = temp64.val32.upper; |
| 1566 | c->SG[i].Len = buff_size[i]; |
| 1567 | c->SG[i].Ext = 0; /* we are not chaining */ |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1568 | } |
| 1569 | c->waiting = &wait; |
| 1570 | enqueue_cmd_and_start_io(h, c); |
| 1571 | wait_for_completion(&wait); |
| 1572 | /* unlock the buffers from DMA */ |
| 1573 | for (i = 0; i < sg_used; i++) { |
| 1574 | temp64.val32.lower = c->SG[i].Addr.lower; |
| 1575 | temp64.val32.upper = c->SG[i].Addr.upper; |
| 1576 | pci_unmap_single(h->pdev, |
| 1577 | (dma_addr_t) temp64.val, buff_size[i], |
| 1578 | PCI_DMA_BIDIRECTIONAL); |
| 1579 | } |
| 1580 | check_ioctl_unit_attention(h, c); |
| 1581 | /* Copy the error information out */ |
| 1582 | ioc->error_info = *(c->err_info); |
| 1583 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { |
| 1584 | cmd_special_free(h, c); |
| 1585 | status = -EFAULT; |
| 1586 | goto cleanup1; |
| 1587 | } |
| 1588 | if (ioc->Request.Type.Direction == XFER_READ) { |
| 1589 | /* Copy the data out of the buffer we created */ |
| 1590 | BYTE __user *ptr = ioc->buf; |
| 1591 | for (i = 0; i < sg_used; i++) { |
| 1592 | if (copy_to_user(ptr, buff[i], buff_size[i])) { |
| 1593 | cmd_special_free(h, c); |
| 1594 | status = -EFAULT; |
| 1595 | goto cleanup1; |
| 1596 | } |
| 1597 | ptr += buff_size[i]; |
| 1598 | } |
| 1599 | } |
| 1600 | cmd_special_free(h, c); |
| 1601 | status = 0; |
| 1602 | cleanup1: |
| 1603 | if (buff) { |
| 1604 | for (i = 0; i < sg_used; i++) |
| 1605 | kfree(buff[i]); |
| 1606 | kfree(buff); |
| 1607 | } |
| 1608 | kfree(buff_size); |
| 1609 | kfree(ioc); |
| 1610 | return status; |
| 1611 | } |
| 1612 | |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1613 | static int cciss_ioctl(struct block_device *bdev, fmode_t mode, |
Stephen M. Cameron | c525919 | 2010-08-26 13:56:15 -0500 | [diff] [blame] | 1614 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | struct gendisk *disk = bdev->bd_disk; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1617 | ctlr_info_t *h = get_host(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | void __user *argp = (void __user *)arg; |
| 1619 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1620 | dev_dbg(&h->pdev->dev, "cciss_ioctl: Called with cmd=%x %lx\n", |
| 1621 | cmd, arg); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1622 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | case CCISS_GETPCIINFO: |
Stephen M. Cameron | 0a25a5a | 2010-08-26 13:55:34 -0500 | [diff] [blame] | 1624 | return cciss_getpciinfo(h, argp); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1625 | case CCISS_GETINTINFO: |
Stephen M. Cameron | 576e661 | 2010-08-26 13:55:39 -0500 | [diff] [blame] | 1626 | return cciss_getintinfo(h, argp); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1627 | case CCISS_SETINTINFO: |
Stephen M. Cameron | 4c800ee | 2010-08-26 13:55:44 -0500 | [diff] [blame] | 1628 | return cciss_setintinfo(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | case CCISS_GETNODENAME: |
Stephen M. Cameron | 2521610 | 2010-08-26 13:55:49 -0500 | [diff] [blame] | 1630 | return cciss_getnodename(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | case CCISS_SETNODENAME: |
Stephen M. Cameron | 4f43f32 | 2010-08-26 13:55:54 -0500 | [diff] [blame] | 1632 | return cciss_setnodename(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | case CCISS_GETHEARTBEAT: |
Stephen M. Cameron | 93c7493 | 2010-08-26 13:55:59 -0500 | [diff] [blame] | 1634 | return cciss_getheartbeat(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | case CCISS_GETBUSTYPES: |
Stephen M. Cameron | d18dfad | 2010-08-26 13:56:05 -0500 | [diff] [blame] | 1636 | return cciss_getbustypes(h, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | case CCISS_GETFIRMVER: |
Stephen M. Cameron | 8a4f7fb | 2010-08-26 13:56:10 -0500 | [diff] [blame] | 1638 | return cciss_getfirmver(h, argp); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1639 | case CCISS_GETDRIVVER: |
Stephen M. Cameron | c525919 | 2010-08-26 13:56:15 -0500 | [diff] [blame] | 1640 | return cciss_getdrivver(h, argp); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1641 | case CCISS_DEREGDISK: |
| 1642 | case CCISS_REGNEWD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | case CCISS_REVALIDVOLS: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1644 | return rebuild_lun_table(h, 0, 1); |
Stephen M. Cameron | 0894b32 | 2010-08-26 13:56:20 -0500 | [diff] [blame] | 1645 | case CCISS_GETLUNINFO: |
| 1646 | return cciss_getluninfo(h, disk, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | case CCISS_PASSTHRU: |
Stephen M. Cameron | f32f125 | 2010-08-26 13:56:25 -0500 | [diff] [blame] | 1648 | return cciss_passthru(h, argp); |
Stephen M. Cameron | 0c9f5ba | 2010-08-26 13:56:30 -0500 | [diff] [blame] | 1649 | case CCISS_BIG_PASSTHRU: |
| 1650 | return cciss_bigpassthru(h, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1651 | |
| 1652 | /* scsi_cmd_ioctl handles these, below, though some are not */ |
| 1653 | /* very meaningful for cciss. SG_IO is the main one people want. */ |
| 1654 | |
| 1655 | case SG_GET_VERSION_NUM: |
| 1656 | case SG_SET_TIMEOUT: |
| 1657 | case SG_GET_TIMEOUT: |
| 1658 | case SG_GET_RESERVED_SIZE: |
| 1659 | case SG_SET_RESERVED_SIZE: |
| 1660 | case SG_EMULATED_HOST: |
| 1661 | case SG_IO: |
| 1662 | case SCSI_IOCTL_SEND_COMMAND: |
Al Viro | ef7822c | 2008-03-02 09:26:41 -0500 | [diff] [blame] | 1663 | return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, argp); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 1664 | |
| 1665 | /* scsi_cmd_ioctl would normally handle these, below, but */ |
| 1666 | /* they aren't a good fit for cciss, as CD-ROMs are */ |
| 1667 | /* not supported, and we don't have any bus/target/lun */ |
| 1668 | /* which we present to the kernel. */ |
| 1669 | |
| 1670 | case CDROM_SEND_PACKET: |
| 1671 | case CDROMCLOSETRAY: |
| 1672 | case CDROMEJECT: |
| 1673 | case SCSI_IOCTL_GET_IDLUN: |
| 1674 | case SCSI_IOCTL_GET_BUS_NUMBER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | default: |
| 1676 | return -ENOTTY; |
| 1677 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | } |
| 1679 | |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1680 | static void cciss_check_queues(ctlr_info_t *h) |
| 1681 | { |
| 1682 | int start_queue = h->next_to_run; |
| 1683 | int i; |
| 1684 | |
| 1685 | /* check to see if we have maxed out the number of commands that can |
| 1686 | * be placed on the queue. If so then exit. We do this check here |
| 1687 | * in case the interrupt we serviced was from an ioctl and did not |
| 1688 | * free any new commands. |
| 1689 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1690 | 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] | 1691 | return; |
| 1692 | |
| 1693 | /* We have room on the queue for more commands. Now we need to queue |
| 1694 | * them up. We will also keep track of the next queue to run so |
| 1695 | * that every queue gets a chance to be started first. |
| 1696 | */ |
| 1697 | for (i = 0; i < h->highest_lun + 1; i++) { |
| 1698 | int curr_queue = (start_queue + i) % (h->highest_lun + 1); |
| 1699 | /* make sure the disk has been added and the drive is real |
| 1700 | * because this can be called from the middle of init_one. |
| 1701 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1702 | if (!h->drv[curr_queue]) |
| 1703 | continue; |
| 1704 | if (!(h->drv[curr_queue]->queue) || |
| 1705 | !(h->drv[curr_queue]->heads)) |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1706 | continue; |
| 1707 | blk_start_queue(h->gendisk[curr_queue]->queue); |
| 1708 | |
| 1709 | /* check to see if we have maxed out the number of commands |
| 1710 | * that can be placed on the queue. |
| 1711 | */ |
Mike Miller | f880632 | 2006-12-06 20:35:01 -0800 | [diff] [blame] | 1712 | 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] | 1713 | if (curr_queue == start_queue) { |
| 1714 | h->next_to_run = |
| 1715 | (start_queue + 1) % (h->highest_lun + 1); |
| 1716 | break; |
| 1717 | } else { |
| 1718 | h->next_to_run = curr_queue; |
| 1719 | break; |
| 1720 | } |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1721 | } |
| 1722 | } |
| 1723 | } |
| 1724 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1725 | static void cciss_softirq_done(struct request *rq) |
| 1726 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1727 | CommandList_struct *c = rq->completion_data; |
| 1728 | ctlr_info_t *h = hba[c->ctlr]; |
| 1729 | SGDescriptor_struct *curr_sg = c->SG; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1730 | u64bit temp64; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 1731 | unsigned long flags; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1732 | int i, ddir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1733 | int sg_index = 0; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1734 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1735 | if (c->Request.Type.Direction == XFER_READ) |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1736 | ddir = PCI_DMA_FROMDEVICE; |
| 1737 | else |
| 1738 | ddir = PCI_DMA_TODEVICE; |
| 1739 | |
| 1740 | /* command did not need to be retried */ |
| 1741 | /* unmap the DMA mapping for all the scatter gather elements */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1742 | for (i = 0; i < c->Header.SGList; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1743 | if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1744 | cciss_unmap_sg_chain_block(h, c); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1745 | /* Point to the next block */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1746 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 1747 | sg_index = 0; |
| 1748 | } |
| 1749 | temp64.val32.lower = curr_sg[sg_index].Addr.lower; |
| 1750 | temp64.val32.upper = curr_sg[sg_index].Addr.upper; |
| 1751 | pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len, |
| 1752 | ddir); |
| 1753 | ++sg_index; |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1754 | } |
| 1755 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1756 | dev_dbg(&h->pdev->dev, "Done with %p\n", rq); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1757 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1758 | /* set the residual count for pc requests */ |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 1759 | if (rq->cmd_type == REQ_TYPE_BLOCK_PC) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1760 | rq->resid_len = c->err_info->ResidualCnt; |
Jens Axboe | ac44e5b | 2009-03-27 10:43:52 +0100 | [diff] [blame] | 1761 | |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 1762 | blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO); |
Kiyoshi Ueda | 3daeea2 | 2007-12-11 17:50:03 -0500 | [diff] [blame] | 1763 | |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1764 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 1765 | cmd_free(h, c); |
Jens Axboe | 7b30f09 | 2006-07-25 15:02:48 +0200 | [diff] [blame] | 1766 | cciss_check_queues(h); |
Mike Miller | ca1e048 | 2006-04-10 15:38:07 -0700 | [diff] [blame] | 1767 | spin_unlock_irqrestore(&h->lock, flags); |
| 1768 | } |
| 1769 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 1770 | static inline void log_unit_to_scsi3addr(ctlr_info_t *h, |
| 1771 | unsigned char scsi3addr[], uint32_t log_unit) |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1772 | { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1773 | memcpy(scsi3addr, h->drv[log_unit]->LunID, |
| 1774 | sizeof(h->drv[log_unit]->LunID)); |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1775 | } |
| 1776 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1777 | /* This function gets the SCSI vendor, model, and revision of a logical drive |
| 1778 | * via the inquiry page 0. Model, vendor, and rev are set to empty strings if |
| 1779 | * they cannot be read. |
| 1780 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1781 | static void cciss_get_device_descr(ctlr_info_t *h, int logvol, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1782 | char *vendor, char *model, char *rev) |
| 1783 | { |
| 1784 | int rc; |
| 1785 | InquiryData_struct *inq_buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1786 | unsigned char scsi3addr[8]; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1787 | |
| 1788 | *vendor = '\0'; |
| 1789 | *model = '\0'; |
| 1790 | *rev = '\0'; |
| 1791 | |
| 1792 | inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 1793 | if (!inq_buf) |
| 1794 | return; |
| 1795 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1796 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 1797 | rc = sendcmd_withirq(h, CISS_INQUIRY, inq_buf, sizeof(*inq_buf), 0, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1798 | scsi3addr, TYPE_CMD); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1799 | if (rc == IO_OK) { |
| 1800 | memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); |
| 1801 | vendor[VENDOR_LEN] = '\0'; |
| 1802 | memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); |
| 1803 | model[MODEL_LEN] = '\0'; |
| 1804 | memcpy(rev, &inq_buf->data_byte[32], REV_LEN); |
| 1805 | rev[REV_LEN] = '\0'; |
| 1806 | } |
| 1807 | |
| 1808 | kfree(inq_buf); |
| 1809 | return; |
| 1810 | } |
| 1811 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1812 | /* This function gets the serial number of a logical drive via |
| 1813 | * inquiry page 0x83. Serial no. is 16 bytes. If the serial |
| 1814 | * number cannot be had, for whatever reason, 16 bytes of 0xff |
| 1815 | * are returned instead. |
| 1816 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1817 | static void cciss_get_serial_no(ctlr_info_t *h, int logvol, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1818 | unsigned char *serial_no, int buflen) |
| 1819 | { |
| 1820 | #define PAGE_83_INQ_BYTES 64 |
| 1821 | int rc; |
| 1822 | unsigned char *buf; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 1823 | unsigned char scsi3addr[8]; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1824 | |
| 1825 | if (buflen > 16) |
| 1826 | buflen = 16; |
| 1827 | memset(serial_no, 0xff, buflen); |
| 1828 | buf = kzalloc(PAGE_83_INQ_BYTES, GFP_KERNEL); |
| 1829 | if (!buf) |
| 1830 | return; |
| 1831 | memset(serial_no, 0, buflen); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1832 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 1833 | rc = sendcmd_withirq(h, CISS_INQUIRY, buf, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 1834 | PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1835 | if (rc == IO_OK) |
| 1836 | memcpy(serial_no, &buf[8], buflen); |
| 1837 | kfree(buf); |
| 1838 | return; |
| 1839 | } |
| 1840 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1841 | /* |
| 1842 | * cciss_add_disk sets up the block device queue for a logical drive |
| 1843 | */ |
| 1844 | static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1845 | int drv_index) |
| 1846 | { |
| 1847 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1848 | if (!disk->queue) |
| 1849 | goto init_queue_failure; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1850 | sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index); |
| 1851 | disk->major = h->major; |
| 1852 | disk->first_minor = drv_index << NWD_SHIFT; |
| 1853 | disk->fops = &cciss_fops; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1854 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
| 1855 | goto cleanup_queue; |
| 1856 | disk->private_data = h->drv[drv_index]; |
| 1857 | disk->driverfs_dev = &h->drv[drv_index]->dev; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1858 | |
| 1859 | /* Set up queue information */ |
| 1860 | blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); |
| 1861 | |
| 1862 | /* This is a hardware imposed limit. */ |
Martin K. Petersen | 8a78362 | 2010-02-26 00:20:39 -0500 | [diff] [blame] | 1863 | blk_queue_max_segments(disk->queue, h->maxsgentries); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1864 | |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 1865 | blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1866 | |
| 1867 | blk_queue_softirq_done(disk->queue, cciss_softirq_done); |
| 1868 | |
| 1869 | disk->queue->queuedata = h; |
| 1870 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 1871 | blk_queue_logical_block_size(disk->queue, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1872 | h->drv[drv_index]->block_size); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1873 | |
| 1874 | /* Make sure all queue data is written out before */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1875 | /* setting h->drv[drv_index]->queue, as setting this */ |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1876 | /* allows the interrupt handler to start the queue */ |
| 1877 | wmb(); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1878 | h->drv[drv_index]->queue = disk->queue; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1879 | add_disk(disk); |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1880 | return 0; |
| 1881 | |
| 1882 | cleanup_queue: |
| 1883 | blk_cleanup_queue(disk->queue); |
| 1884 | disk->queue = NULL; |
Stephen M. Cameron | e8074f7 | 2009-09-17 13:47:24 -0500 | [diff] [blame] | 1885 | init_queue_failure: |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 1886 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1887 | } |
| 1888 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1889 | /* 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] | 1890 | * If the usage_count is zero and it is a heretofore unknown drive, or, |
| 1891 | * the drive's capacity, geometry, or serial number has changed, |
| 1892 | * then the drive information will be updated and the disk will be |
| 1893 | * re-registered with the kernel. If these conditions don't hold, |
| 1894 | * then it will be left alone for the next reboot. The exception to this |
| 1895 | * is disk 0 which will always be left registered with the kernel since it |
| 1896 | * is also the controller node. Any changes to disk 0 will show up on |
| 1897 | * the next reboot. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1898 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1899 | static void cciss_update_drive_info(ctlr_info_t *h, int drv_index, |
| 1900 | int first_time, int via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 1901 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1902 | struct gendisk *disk; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1903 | InquiryData_struct *inq_buff = NULL; |
| 1904 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 1905 | sector_t total_size; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1906 | unsigned long flags = 0; |
| 1907 | int ret = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1908 | drive_info_struct *drvinfo; |
| 1909 | |
| 1910 | /* Get information about the disk and modify the driver structure */ |
| 1911 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1912 | drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1913 | if (inq_buff == NULL || drvinfo == NULL) |
| 1914 | goto mem_msg; |
| 1915 | |
| 1916 | /* testing to see if 16-byte CDBs are already being used */ |
| 1917 | if (h->cciss_read == CCISS_READ_16) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1918 | cciss_read_capacity_16(h, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1919 | &total_size, &block_size); |
| 1920 | |
| 1921 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1922 | cciss_read_capacity(h, drv_index, &total_size, &block_size); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1923 | /* if read_capacity returns all F's this volume is >2TB */ |
| 1924 | /* in size so we switch to 16-byte CDB's for all */ |
| 1925 | /* read/write ops */ |
| 1926 | if (total_size == 0xFFFFFFFFULL) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1927 | cciss_read_capacity_16(h, drv_index, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1928 | &total_size, &block_size); |
| 1929 | h->cciss_read = CCISS_READ_16; |
| 1930 | h->cciss_write = CCISS_WRITE_16; |
| 1931 | } else { |
| 1932 | h->cciss_read = CCISS_READ_10; |
| 1933 | h->cciss_write = CCISS_WRITE_10; |
| 1934 | } |
| 1935 | } |
| 1936 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1937 | cciss_geometry_inquiry(h, drv_index, total_size, block_size, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1938 | inq_buff, drvinfo); |
| 1939 | drvinfo->block_size = block_size; |
| 1940 | drvinfo->nr_blocks = total_size + 1; |
| 1941 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1942 | cciss_get_device_descr(h, drv_index, drvinfo->vendor, |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 1943 | drvinfo->model, drvinfo->rev); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1944 | cciss_get_serial_no(h, drv_index, drvinfo->serial_no, |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1945 | sizeof(drvinfo->serial_no)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1946 | /* Save the lunid in case we deregister the disk, below. */ |
| 1947 | memcpy(drvinfo->LunID, h->drv[drv_index]->LunID, |
| 1948 | sizeof(drvinfo->LunID)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1949 | |
| 1950 | /* Is it the same disk we already know, and nothing's changed? */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1951 | if (h->drv[drv_index]->raid_level != -1 && |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1952 | ((memcmp(drvinfo->serial_no, |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1953 | h->drv[drv_index]->serial_no, 16) == 0) && |
| 1954 | drvinfo->block_size == h->drv[drv_index]->block_size && |
| 1955 | drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks && |
| 1956 | drvinfo->heads == h->drv[drv_index]->heads && |
| 1957 | drvinfo->sectors == h->drv[drv_index]->sectors && |
| 1958 | drvinfo->cylinders == h->drv[drv_index]->cylinders)) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1959 | /* The disk is unchanged, nothing to update */ |
| 1960 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1961 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1962 | /* If we get here it's not the same disk, or something's changed, |
| 1963 | * so we need to * deregister it, and re-register it, if it's not |
| 1964 | * in use. |
| 1965 | * If the disk already exists then deregister it before proceeding |
| 1966 | * (unless it's the first disk (for the controller node). |
| 1967 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1968 | if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 1969 | dev_warn(&h->pdev->dev, "disk %d has changed.\n", drv_index); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1970 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1971 | h->drv[drv_index]->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 1972 | spin_unlock_irqrestore(&h->lock, flags); |
scameron@beardog.cca.cpqcorp.net | e14ac67 | 2008-04-17 13:19:03 +0200 | [diff] [blame] | 1973 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1974 | /* deregister_disk sets h->drv[drv_index]->queue = NULL |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1975 | * which keeps the interrupt handler from starting |
| 1976 | * the queue. |
| 1977 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 1978 | ret = deregister_disk(h, drv_index, 0, via_ioctl); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1979 | } |
| 1980 | |
| 1981 | /* If the disk is in use return */ |
| 1982 | if (ret) |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 1983 | goto freeret; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 1984 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1985 | /* Save the new information from cciss_geometry_inquiry |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1986 | * and serial number inquiry. If the disk was deregistered |
| 1987 | * above, then h->drv[drv_index] will be NULL. |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 1988 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 1989 | if (h->drv[drv_index] == NULL) { |
| 1990 | drvinfo->device_initialized = 0; |
| 1991 | h->drv[drv_index] = drvinfo; |
| 1992 | drvinfo = NULL; /* so it won't be freed below. */ |
| 1993 | } else { |
| 1994 | /* special case for cxd0 */ |
| 1995 | h->drv[drv_index]->block_size = drvinfo->block_size; |
| 1996 | h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks; |
| 1997 | h->drv[drv_index]->heads = drvinfo->heads; |
| 1998 | h->drv[drv_index]->sectors = drvinfo->sectors; |
| 1999 | h->drv[drv_index]->cylinders = drvinfo->cylinders; |
| 2000 | h->drv[drv_index]->raid_level = drvinfo->raid_level; |
| 2001 | memcpy(h->drv[drv_index]->serial_no, drvinfo->serial_no, 16); |
| 2002 | memcpy(h->drv[drv_index]->vendor, drvinfo->vendor, |
| 2003 | VENDOR_LEN + 1); |
| 2004 | memcpy(h->drv[drv_index]->model, drvinfo->model, MODEL_LEN + 1); |
| 2005 | memcpy(h->drv[drv_index]->rev, drvinfo->rev, REV_LEN + 1); |
| 2006 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2007 | |
| 2008 | ++h->num_luns; |
| 2009 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2010 | set_capacity(disk, h->drv[drv_index]->nr_blocks); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2011 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2012 | /* If it's not disk 0 (drv_index != 0) |
| 2013 | * or if it was disk 0, but there was previously |
| 2014 | * no actual corresponding configured logical drive |
| 2015 | * (raid_leve == -1) then we want to update the |
| 2016 | * logical drive's information. |
| 2017 | */ |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2018 | if (drv_index || first_time) { |
| 2019 | if (cciss_add_disk(h, disk, drv_index) != 0) { |
| 2020 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2021 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2022 | dev_warn(&h->pdev->dev, "could not update disk %d\n", |
| 2023 | drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2024 | --h->num_luns; |
| 2025 | } |
| 2026 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2027 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2028 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2029 | kfree(inq_buff); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2030 | kfree(drvinfo); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2031 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2032 | mem_msg: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2033 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2034 | goto freeret; |
| 2035 | } |
| 2036 | |
| 2037 | /* This function will find the first index of the controllers drive array |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2038 | * that has a null drv pointer and allocate the drive info struct and |
| 2039 | * will return that index This is where new drives will be added. |
| 2040 | * If the index to be returned is greater than the highest_lun index for |
| 2041 | * the controller then highest_lun is set * to this new index. |
| 2042 | * If there are no available indexes or if tha allocation fails, then -1 |
| 2043 | * is returned. * "controller_node" is used to know if this is a real |
| 2044 | * logical drive, or just the controller node, which determines if this |
| 2045 | * counts towards highest_lun. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2046 | */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2047 | static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2049 | int i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2050 | drive_info_struct *drv; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2051 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2052 | /* Search for an empty slot for our drive info */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2053 | for (i = 0; i < CISS_MAX_LUN; i++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2054 | |
| 2055 | /* if not cxd0 case, and it's occupied, skip it. */ |
| 2056 | if (h->drv[i] && i != 0) |
| 2057 | continue; |
| 2058 | /* |
| 2059 | * If it's cxd0 case, and drv is alloc'ed already, and a |
| 2060 | * disk is configured there, skip it. |
| 2061 | */ |
| 2062 | if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1) |
| 2063 | continue; |
| 2064 | |
| 2065 | /* |
| 2066 | * We've found an empty slot. Update highest_lun |
| 2067 | * provided this isn't just the fake cxd0 controller node. |
| 2068 | */ |
| 2069 | if (i > h->highest_lun && !controller_node) |
| 2070 | h->highest_lun = i; |
| 2071 | |
| 2072 | /* If adding a real disk at cxd0, and it's already alloc'ed */ |
| 2073 | if (i == 0 && h->drv[i] != NULL) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2074 | return i; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2075 | |
| 2076 | /* |
| 2077 | * Found an empty slot, not already alloc'ed. Allocate it. |
| 2078 | * Mark it with raid_level == -1, so we know it's new later on. |
| 2079 | */ |
| 2080 | drv = kzalloc(sizeof(*drv), GFP_KERNEL); |
| 2081 | if (!drv) |
| 2082 | return -1; |
| 2083 | drv->raid_level = -1; /* so we know it's new */ |
| 2084 | h->drv[i] = drv; |
| 2085 | return i; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2086 | } |
| 2087 | return -1; |
| 2088 | } |
| 2089 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2090 | static void cciss_free_drive_info(ctlr_info_t *h, int drv_index) |
| 2091 | { |
| 2092 | kfree(h->drv[drv_index]); |
| 2093 | h->drv[drv_index] = NULL; |
| 2094 | } |
| 2095 | |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2096 | static void cciss_free_gendisk(ctlr_info_t *h, int drv_index) |
| 2097 | { |
| 2098 | put_disk(h->gendisk[drv_index]); |
| 2099 | h->gendisk[drv_index] = NULL; |
| 2100 | } |
| 2101 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2102 | /* cciss_add_gendisk finds a free hba[]->drv structure |
| 2103 | * and allocates a gendisk if needed, and sets the lunid |
| 2104 | * in the drvinfo structure. It returns the index into |
| 2105 | * the ->drv[] array, or -1 if none are free. |
| 2106 | * is_controller_node indicates whether highest_lun should |
| 2107 | * count this disk, or if it's only being added to provide |
| 2108 | * a means to talk to the controller in case no logical |
| 2109 | * drives have yet been configured. |
| 2110 | */ |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2111 | static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[], |
| 2112 | int controller_node) |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2113 | { |
| 2114 | int drv_index; |
| 2115 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2116 | drv_index = cciss_alloc_drive_info(h, controller_node); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2117 | if (drv_index == -1) |
| 2118 | return -1; |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2119 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2120 | /*Check if the gendisk needs to be allocated */ |
| 2121 | if (!h->gendisk[drv_index]) { |
| 2122 | h->gendisk[drv_index] = |
| 2123 | alloc_disk(1 << NWD_SHIFT); |
| 2124 | if (!h->gendisk[drv_index]) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2125 | dev_err(&h->pdev->dev, |
| 2126 | "could not allocate a new disk %d\n", |
| 2127 | drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2128 | goto err_free_drive_info; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2129 | } |
| 2130 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2131 | memcpy(h->drv[drv_index]->LunID, lunid, |
| 2132 | sizeof(h->drv[drv_index]->LunID)); |
| 2133 | if (cciss_create_ld_sysfs_entry(h, drv_index)) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2134 | goto err_free_disk; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2135 | /* Don't need to mark this busy because nobody */ |
| 2136 | /* else knows about this disk yet to contend */ |
| 2137 | /* for access to it. */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2138 | h->drv[drv_index]->busy_configuring = 0; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2139 | wmb(); |
| 2140 | return drv_index; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2141 | |
| 2142 | err_free_disk: |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2143 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2144 | err_free_drive_info: |
| 2145 | cciss_free_drive_info(h, drv_index); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 2146 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2147 | } |
| 2148 | |
| 2149 | /* This is for the special case of a controller which |
| 2150 | * has no logical drives. In this case, we still need |
| 2151 | * to register a disk so the controller can be accessed |
| 2152 | * by the Array Config Utility. |
| 2153 | */ |
| 2154 | static void cciss_add_controller_node(ctlr_info_t *h) |
| 2155 | { |
| 2156 | struct gendisk *disk; |
| 2157 | int drv_index; |
| 2158 | |
| 2159 | if (h->gendisk[0] != NULL) /* already did this? Then bail. */ |
| 2160 | return; |
| 2161 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2162 | drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2163 | if (drv_index == -1) |
| 2164 | goto error; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2165 | h->drv[drv_index]->block_size = 512; |
| 2166 | h->drv[drv_index]->nr_blocks = 0; |
| 2167 | h->drv[drv_index]->heads = 0; |
| 2168 | h->drv[drv_index]->sectors = 0; |
| 2169 | h->drv[drv_index]->cylinders = 0; |
| 2170 | h->drv[drv_index]->raid_level = -1; |
| 2171 | memset(h->drv[drv_index]->serial_no, 0, 16); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2172 | disk = h->gendisk[drv_index]; |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2173 | if (cciss_add_disk(h, disk, drv_index) == 0) |
| 2174 | return; |
| 2175 | cciss_free_gendisk(h, drv_index); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2176 | cciss_free_drive_info(h, drv_index); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2177 | error: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2178 | dev_warn(&h->pdev->dev, "could not add disk 0.\n"); |
Stephen M. Cameron | 361e9b0 | 2009-09-17 13:47:29 -0500 | [diff] [blame] | 2179 | return; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2180 | } |
| 2181 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2182 | /* This function will add and remove logical drives from the Logical |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2183 | * drive array of the controller and maintain persistency of ordering |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2184 | * so that mount points are preserved until the next reboot. This allows |
| 2185 | * for the removal of logical drives in the middle of the drive array |
| 2186 | * without a re-ordering of those drives. |
| 2187 | * INPUT |
| 2188 | * h = The controller to perform the operations on |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2189 | */ |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2190 | static int rebuild_lun_table(ctlr_info_t *h, int first_time, |
| 2191 | int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2192 | { |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2193 | int num_luns; |
| 2194 | ReportLunData_struct *ld_buff = NULL; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2195 | int return_code; |
| 2196 | int listlength = 0; |
| 2197 | int i; |
| 2198 | int drv_found; |
| 2199 | int drv_index = 0; |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2200 | unsigned char lunid[8] = CTLR_LUNID; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2201 | unsigned long flags; |
| 2202 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2203 | if (!capable(CAP_SYS_RAWIO)) |
| 2204 | return -EPERM; |
| 2205 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2206 | /* Set busy_configuring flag for this operation */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2207 | spin_lock_irqsave(&h->lock, flags); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2208 | if (h->busy_configuring) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2209 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2210 | return -EBUSY; |
| 2211 | } |
| 2212 | h->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2213 | spin_unlock_irqrestore(&h->lock, flags); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2214 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2215 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); |
| 2216 | if (ld_buff == NULL) |
| 2217 | goto mem_msg; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2218 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2219 | return_code = sendcmd_withirq(h, CISS_REPORT_LOG, ld_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2220 | sizeof(ReportLunData_struct), |
| 2221 | 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2222 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2223 | if (return_code == IO_OK) |
| 2224 | listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength); |
| 2225 | else { /* reading number of logical volumes failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2226 | dev_warn(&h->pdev->dev, |
| 2227 | "report logical volume command failed\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2228 | listlength = 0; |
| 2229 | goto freeret; |
| 2230 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2231 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2232 | num_luns = listlength / 8; /* 8 bytes per entry */ |
| 2233 | if (num_luns > CISS_MAX_LUN) { |
| 2234 | num_luns = CISS_MAX_LUN; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2235 | dev_warn(&h->pdev->dev, "more luns configured" |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2236 | " on controller than can be handled by" |
| 2237 | " this driver.\n"); |
| 2238 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2239 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2240 | if (num_luns == 0) |
| 2241 | cciss_add_controller_node(h); |
| 2242 | |
| 2243 | /* Compare controller drive array to driver's drive array |
| 2244 | * to see if any drives are missing on the controller due |
| 2245 | * to action of Array Config Utility (user deletes drive) |
| 2246 | * and deregister logical drives which have disappeared. |
| 2247 | */ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2248 | for (i = 0; i <= h->highest_lun; i++) { |
| 2249 | int j; |
| 2250 | drv_found = 0; |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2251 | |
| 2252 | /* skip holes in the array from already deleted drives */ |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2253 | if (h->drv[i] == NULL) |
Stephen M. Cameron | d8a0be6 | 2008-12-18 14:55:11 +0100 | [diff] [blame] | 2254 | continue; |
| 2255 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2256 | for (j = 0; j < num_luns; j++) { |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2257 | memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid)); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2258 | if (memcmp(h->drv[i]->LunID, lunid, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2259 | sizeof(lunid)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2260 | drv_found = 1; |
| 2261 | break; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2262 | } |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2263 | } |
| 2264 | if (!drv_found) { |
| 2265 | /* Deregister it from the OS, it's gone. */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2266 | spin_lock_irqsave(&h->lock, flags); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2267 | h->drv[i]->busy_configuring = 1; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2268 | spin_unlock_irqrestore(&h->lock, flags); |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2269 | return_code = deregister_disk(h, i, 1, via_ioctl); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2270 | if (h->drv[i] != NULL) |
| 2271 | h->drv[i]->busy_configuring = 0; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2272 | } |
| 2273 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2274 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2275 | /* Compare controller drive array to driver's drive array. |
| 2276 | * Check for updates in the drive information and any new drives |
| 2277 | * on the controller due to ACU adding logical drives, or changing |
| 2278 | * a logical drive's size, etc. Reregister any new/changed drives |
| 2279 | */ |
| 2280 | for (i = 0; i < num_luns; i++) { |
| 2281 | int j; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2282 | |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2283 | drv_found = 0; |
| 2284 | |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2285 | memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid)); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2286 | /* Find if the LUN is already in the drive array |
| 2287 | * of the driver. If so then update its info |
| 2288 | * if not in use. If it does not exist then find |
| 2289 | * the first free index and add it. |
| 2290 | */ |
| 2291 | for (j = 0; j <= h->highest_lun; j++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2292 | if (h->drv[j] != NULL && |
| 2293 | memcmp(h->drv[j]->LunID, lunid, |
| 2294 | sizeof(h->drv[j]->LunID)) == 0) { |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2295 | drv_index = j; |
| 2296 | drv_found = 1; |
| 2297 | break; |
| 2298 | } |
| 2299 | } |
| 2300 | |
| 2301 | /* check if the drive was found already in the array */ |
| 2302 | if (!drv_found) { |
Mike Miller | eece695 | 2008-08-04 11:54:53 +0200 | [diff] [blame] | 2303 | drv_index = cciss_add_gendisk(h, lunid, 0); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2304 | if (drv_index == -1) |
| 2305 | goto freeret; |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2306 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2307 | cciss_update_drive_info(h, drv_index, first_time, via_ioctl); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2308 | } /* end for */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2309 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2310 | freeret: |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2311 | kfree(ld_buff); |
| 2312 | h->busy_configuring = 0; |
| 2313 | /* We return -1 here to tell the ACU that we have registered/updated |
| 2314 | * all of the drives that we can and to keep it from calling us |
| 2315 | * additional times. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2316 | */ |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2317 | return -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 2318 | mem_msg: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2319 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2320 | h->busy_configuring = 0; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2321 | goto freeret; |
| 2322 | } |
| 2323 | |
Stephen M. Cameron | 9ddb27b | 2009-09-17 13:47:39 -0500 | [diff] [blame] | 2324 | static void cciss_clear_drive_info(drive_info_struct *drive_info) |
| 2325 | { |
| 2326 | /* zero out the disk size info */ |
| 2327 | drive_info->nr_blocks = 0; |
| 2328 | drive_info->block_size = 0; |
| 2329 | drive_info->heads = 0; |
| 2330 | drive_info->sectors = 0; |
| 2331 | drive_info->cylinders = 0; |
| 2332 | drive_info->raid_level = -1; |
| 2333 | memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no)); |
| 2334 | memset(drive_info->model, 0, sizeof(drive_info->model)); |
| 2335 | memset(drive_info->rev, 0, sizeof(drive_info->rev)); |
| 2336 | memset(drive_info->vendor, 0, sizeof(drive_info->vendor)); |
| 2337 | /* |
| 2338 | * don't clear the LUNID though, we need to remember which |
| 2339 | * one this one is. |
| 2340 | */ |
| 2341 | } |
| 2342 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2343 | /* This function will deregister the disk and it's queue from the |
| 2344 | * kernel. It must be called with the controller lock held and the |
| 2345 | * drv structures busy_configuring flag set. It's parameters are: |
| 2346 | * |
| 2347 | * disk = This is the disk to be deregistered |
| 2348 | * drv = This is the drive_info_struct associated with the disk to be |
| 2349 | * deregistered. It contains information about the disk used |
| 2350 | * by the driver. |
| 2351 | * clear_all = This flag determines whether or not the disk information |
| 2352 | * is going to be completely cleared out and the highest_lun |
| 2353 | * reset. Sometimes we want to clear out information about |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 2354 | * the disk in preparation for re-adding it. In this case |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2355 | * the highest_lun should be left unchanged and the LunID |
| 2356 | * should not be cleared. |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2357 | * via_ioctl |
| 2358 | * This indicates whether we've reached this path via ioctl. |
| 2359 | * This affects the maximum usage count allowed for c0d0 to be messed with. |
| 2360 | * If this path is reached via ioctl(), then the max_usage_count will |
| 2361 | * be 1, as the process calling ioctl() has got to have the device open. |
| 2362 | * If we get here via sysfs, then the max usage count will be zero. |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2363 | */ |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2364 | static int deregister_disk(ctlr_info_t *h, int drv_index, |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2365 | int clear_all, int via_ioctl) |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2366 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2367 | int i; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2368 | struct gendisk *disk; |
| 2369 | drive_info_struct *drv; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2370 | int recalculate_highest_lun; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2371 | |
| 2372 | if (!capable(CAP_SYS_RAWIO)) |
| 2373 | return -EPERM; |
| 2374 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2375 | drv = h->drv[drv_index]; |
Stephen M. Cameron | a0ea862 | 2008-12-18 14:55:51 +0100 | [diff] [blame] | 2376 | disk = h->gendisk[drv_index]; |
| 2377 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2378 | /* make sure logical volume is NOT is use */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2379 | if (clear_all || (h->gendisk[0] == disk)) { |
Stephen M. Cameron | 2d11d99 | 2009-09-17 13:47:44 -0500 | [diff] [blame] | 2380 | if (drv->usage_count > via_ioctl) |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2381 | return -EBUSY; |
| 2382 | } else if (drv->usage_count > 0) |
| 2383 | return -EBUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2384 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2385 | recalculate_highest_lun = (drv == h->drv[h->highest_lun]); |
| 2386 | |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2387 | /* invalidate the devices and deregister the disk. If it is disk |
| 2388 | * zero do not deregister it but just zero out it's values. This |
| 2389 | * allows us to delete disk zero but keep the controller registered. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2390 | */ |
| 2391 | if (h->gendisk[0] != disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2392 | struct request_queue *q = disk->queue; |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 2393 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | 8ce5196 | 2009-09-17 13:47:34 -0500 | [diff] [blame] | 2394 | cciss_destroy_ld_sysfs_entry(h, drv_index, 0); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2395 | del_gendisk(disk); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2396 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2397 | if (q) |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2398 | blk_cleanup_queue(q); |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2399 | /* If clear_all is set then we are deleting the logical |
| 2400 | * drive, not just refreshing its info. For drives |
| 2401 | * other than disk 0 we will call put_disk. We do not |
| 2402 | * do this for disk 0 as we need it to be able to |
| 2403 | * configure the controller. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2404 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2405 | if (clear_all){ |
| 2406 | /* This isn't pretty, but we need to find the |
| 2407 | * disk in our array and NULL our the pointer. |
| 2408 | * This is so that we will call alloc_disk if |
| 2409 | * this index is used again later. |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2410 | */ |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2411 | for (i=0; i < CISS_MAX_LUN; i++){ |
Mike Miller | a72da29 | 2008-08-04 11:54:51 +0200 | [diff] [blame] | 2412 | if (h->gendisk[i] == disk) { |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2413 | h->gendisk[i] = NULL; |
| 2414 | break; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2415 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2416 | } |
Adrian Bunk | 5a9df73 | 2007-10-16 23:29:26 -0700 | [diff] [blame] | 2417 | put_disk(disk); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2418 | } |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 2419 | } else { |
| 2420 | set_capacity(disk, 0); |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2421 | cciss_clear_drive_info(drv); |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2422 | } |
| 2423 | |
| 2424 | --h->num_luns; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2425 | |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2426 | /* if it was the last disk, find the new hightest lun */ |
| 2427 | if (clear_all && recalculate_highest_lun) { |
Bill Pemberton | c2d45b4 | 2010-04-30 09:34:32 -0400 | [diff] [blame] | 2428 | int newhighest = -1; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2429 | for (i = 0; i <= h->highest_lun; i++) { |
| 2430 | /* if the disk has size > 0, it is available */ |
| 2431 | if (h->drv[i] && h->drv[i]->heads) |
| 2432 | newhighest = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2433 | } |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2434 | h->highest_lun = newhighest; |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2435 | } |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2436 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2437 | } |
Mike Miller | ddd4744 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 2438 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2439 | static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2440 | size_t size, __u8 page_code, unsigned char *scsi3addr, |
| 2441 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2442 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | u64bit buff_dma_handle; |
| 2444 | int status = IO_OK; |
| 2445 | |
| 2446 | c->cmd_type = CMD_IOCTL_PEND; |
| 2447 | c->Header.ReplyQueue = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2448 | if (buff != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2449 | c->Header.SGList = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2450 | c->Header.SGTotal = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2451 | } else { |
| 2452 | c->Header.SGList = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2453 | c->Header.SGTotal = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | } |
| 2455 | c->Header.Tag.lower = c->busaddr; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2456 | memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | |
| 2458 | c->Request.Type.Type = cmd_type; |
| 2459 | if (cmd_type == TYPE_CMD) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2460 | switch (cmd) { |
| 2461 | case CISS_INQUIRY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | /* are we trying to read a vital product page */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2463 | if (page_code != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2464 | c->Request.CDB[1] = 0x01; |
| 2465 | c->Request.CDB[2] = page_code; |
| 2466 | } |
| 2467 | c->Request.CDBLen = 6; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2468 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2469 | c->Request.Type.Direction = XFER_READ; |
| 2470 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2471 | c->Request.CDB[0] = CISS_INQUIRY; |
| 2472 | c->Request.CDB[4] = size & 0xFF; |
| 2473 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | case CISS_REPORT_LOG: |
| 2475 | case CISS_REPORT_PHYS: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2476 | /* Talking to controller so It's a physical command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2477 | mode = 00 target = 0. Nothing to write. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2478 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2479 | c->Request.CDBLen = 12; |
| 2480 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2481 | c->Request.Type.Direction = XFER_READ; |
| 2482 | c->Request.Timeout = 0; |
| 2483 | c->Request.CDB[0] = cmd; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2484 | c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | c->Request.CDB[7] = (size >> 16) & 0xFF; |
| 2486 | c->Request.CDB[8] = (size >> 8) & 0xFF; |
| 2487 | c->Request.CDB[9] = size & 0xFF; |
| 2488 | break; |
| 2489 | |
| 2490 | case CCISS_READ_CAPACITY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | c->Request.CDBLen = 10; |
| 2492 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2493 | c->Request.Type.Direction = XFER_READ; |
| 2494 | c->Request.Timeout = 0; |
| 2495 | c->Request.CDB[0] = cmd; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2496 | break; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2497 | case CCISS_READ_CAPACITY_16: |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2498 | c->Request.CDBLen = 16; |
| 2499 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2500 | c->Request.Type.Direction = XFER_READ; |
| 2501 | c->Request.Timeout = 0; |
| 2502 | c->Request.CDB[0] = cmd; |
| 2503 | c->Request.CDB[1] = 0x10; |
| 2504 | c->Request.CDB[10] = (size >> 24) & 0xFF; |
| 2505 | c->Request.CDB[11] = (size >> 16) & 0xFF; |
| 2506 | c->Request.CDB[12] = (size >> 8) & 0xFF; |
| 2507 | c->Request.CDB[13] = size & 0xFF; |
| 2508 | c->Request.Timeout = 0; |
| 2509 | c->Request.CDB[0] = cmd; |
| 2510 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2511 | case CCISS_CACHE_FLUSH: |
| 2512 | c->Request.CDBLen = 12; |
| 2513 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2514 | c->Request.Type.Direction = XFER_WRITE; |
| 2515 | c->Request.Timeout = 0; |
| 2516 | c->Request.CDB[0] = BMIC_WRITE; |
| 2517 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2518 | break; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2519 | case TEST_UNIT_READY: |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2520 | c->Request.CDBLen = 6; |
| 2521 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2522 | c->Request.Type.Direction = XFER_NONE; |
| 2523 | c->Request.Timeout = 0; |
| 2524 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2525 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2526 | dev_warn(&h->pdev->dev, "Unknown Command 0x%c\n", cmd); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 2527 | return IO_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2528 | } |
| 2529 | } else if (cmd_type == TYPE_MSG) { |
| 2530 | switch (cmd) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2531 | case 0: /* ABORT message */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2532 | c->Request.CDBLen = 12; |
| 2533 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2534 | c->Request.Type.Direction = XFER_WRITE; |
| 2535 | c->Request.Timeout = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2536 | c->Request.CDB[0] = cmd; /* abort */ |
| 2537 | c->Request.CDB[1] = 0; /* abort a command */ |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2538 | /* buff contains the tag of the command to abort */ |
| 2539 | memcpy(&c->Request.CDB[4], buff, 8); |
| 2540 | break; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2541 | case 1: /* RESET message */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2542 | c->Request.CDBLen = 16; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2543 | c->Request.Type.Attribute = ATTR_SIMPLE; |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2544 | c->Request.Type.Direction = XFER_NONE; |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 2545 | c->Request.Timeout = 0; |
| 2546 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2547 | c->Request.CDB[0] = cmd; /* reset */ |
Stephen M. Cameron | 88f627a | 2009-06-02 14:48:11 +0200 | [diff] [blame] | 2548 | c->Request.CDB[1] = 0x03; /* reset a target */ |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2549 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | case 3: /* No-Op message */ |
| 2551 | c->Request.CDBLen = 1; |
| 2552 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 2553 | c->Request.Type.Direction = XFER_WRITE; |
| 2554 | c->Request.Timeout = 0; |
| 2555 | c->Request.CDB[0] = cmd; |
| 2556 | break; |
| 2557 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2558 | dev_warn(&h->pdev->dev, |
| 2559 | "unknown message type %d\n", cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2560 | return IO_ERROR; |
| 2561 | } |
| 2562 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2563 | dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2564 | return IO_ERROR; |
| 2565 | } |
| 2566 | /* Fill in the scatter gather information */ |
| 2567 | if (size > 0) { |
| 2568 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2569 | buff, size, |
| 2570 | PCI_DMA_BIDIRECTIONAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2571 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; |
| 2572 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; |
| 2573 | c->SG[0].Len = size; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2574 | c->SG[0].Ext = 0; /* we are not chaining */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2575 | } |
| 2576 | return status; |
| 2577 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2578 | |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2579 | static int check_target_status(ctlr_info_t *h, CommandList_struct *c) |
| 2580 | { |
| 2581 | switch (c->err_info->ScsiStatus) { |
| 2582 | case SAM_STAT_GOOD: |
| 2583 | return IO_OK; |
| 2584 | case SAM_STAT_CHECK_CONDITION: |
| 2585 | switch (0xf & c->err_info->SenseInfo[2]) { |
| 2586 | case 0: return IO_OK; /* no sense */ |
| 2587 | case 1: return IO_OK; /* recovered error */ |
| 2588 | default: |
Stephen M. Cameron | c08fac6 | 2009-11-12 12:49:25 -0600 | [diff] [blame] | 2589 | if (check_for_unit_attention(h, c)) |
| 2590 | return IO_NEEDS_RETRY; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2591 | dev_warn(&h->pdev->dev, "cmd 0x%02x " |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2592 | "check condition, sense key = 0x%02x\n", |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2593 | c->Request.CDB[0], c->err_info->SenseInfo[2]); |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2594 | } |
| 2595 | break; |
| 2596 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2597 | dev_warn(&h->pdev->dev, "cmd 0x%02x" |
| 2598 | "scsi status = 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2599 | c->Request.CDB[0], c->err_info->ScsiStatus); |
| 2600 | break; |
| 2601 | } |
| 2602 | return IO_ERROR; |
| 2603 | } |
| 2604 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2605 | static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c) |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2606 | { |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2607 | int return_status = IO_OK; |
| 2608 | |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2609 | if (c->err_info->CommandStatus == CMD_SUCCESS) |
| 2610 | return IO_OK; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2611 | |
| 2612 | switch (c->err_info->CommandStatus) { |
| 2613 | case CMD_TARGET_STATUS: |
scameron@beardog.cca.cpqcorp.net | 3c2ab40 | 2009-06-08 16:04:35 -0500 | [diff] [blame] | 2614 | return_status = check_target_status(h, c); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2615 | break; |
| 2616 | case CMD_DATA_UNDERRUN: |
| 2617 | case CMD_DATA_OVERRUN: |
| 2618 | /* expected for inquiry and report lun commands */ |
| 2619 | break; |
| 2620 | case CMD_INVALID: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2621 | dev_warn(&h->pdev->dev, "cmd 0x%02x is " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2622 | "reported invalid\n", c->Request.CDB[0]); |
| 2623 | return_status = IO_ERROR; |
| 2624 | break; |
| 2625 | case CMD_PROTOCOL_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2626 | dev_warn(&h->pdev->dev, "cmd 0x%02x has " |
| 2627 | "protocol error\n", c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2628 | return_status = IO_ERROR; |
| 2629 | break; |
| 2630 | case CMD_HARDWARE_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2631 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2632 | " hardware error\n", c->Request.CDB[0]); |
| 2633 | return_status = IO_ERROR; |
| 2634 | break; |
| 2635 | case CMD_CONNECTION_LOST: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2636 | dev_warn(&h->pdev->dev, "cmd 0x%02x had " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2637 | "connection lost\n", c->Request.CDB[0]); |
| 2638 | return_status = IO_ERROR; |
| 2639 | break; |
| 2640 | case CMD_ABORTED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2641 | dev_warn(&h->pdev->dev, "cmd 0x%02x was " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2642 | "aborted\n", c->Request.CDB[0]); |
| 2643 | return_status = IO_ERROR; |
| 2644 | break; |
| 2645 | case CMD_ABORT_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2646 | dev_warn(&h->pdev->dev, "cmd 0x%02x reports " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2647 | "abort failed\n", c->Request.CDB[0]); |
| 2648 | return_status = IO_ERROR; |
| 2649 | break; |
| 2650 | case CMD_UNSOLICITED_ABORT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2651 | dev_warn(&h->pdev->dev, "unsolicited abort 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2652 | c->Request.CDB[0]); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2653 | return_status = IO_NEEDS_RETRY; |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2654 | break; |
| 2655 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2656 | dev_warn(&h->pdev->dev, "cmd 0x%02x returned " |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2657 | "unknown status %x\n", c->Request.CDB[0], |
| 2658 | c->err_info->CommandStatus); |
| 2659 | return_status = IO_ERROR; |
| 2660 | } |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2661 | return return_status; |
| 2662 | } |
| 2663 | |
| 2664 | static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c, |
| 2665 | int attempt_retry) |
| 2666 | { |
| 2667 | DECLARE_COMPLETION_ONSTACK(wait); |
| 2668 | u64bit buff_dma_handle; |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2669 | int return_status = IO_OK; |
| 2670 | |
| 2671 | resend_cmd2: |
| 2672 | c->waiting = &wait; |
Mike Miller | 664a717 | 2010-06-02 12:57:58 -0700 | [diff] [blame] | 2673 | enqueue_cmd_and_start_io(h, c); |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2674 | |
| 2675 | wait_for_completion(&wait); |
| 2676 | |
| 2677 | if (c->err_info->CommandStatus == 0 || !attempt_retry) |
| 2678 | goto command_done; |
| 2679 | |
| 2680 | return_status = process_sendcmd_error(h, c); |
| 2681 | |
| 2682 | if (return_status == IO_NEEDS_RETRY && |
| 2683 | c->retry_count < MAX_CMD_RETRIES) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2684 | dev_warn(&h->pdev->dev, "retrying 0x%02x\n", |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2685 | c->Request.CDB[0]); |
| 2686 | c->retry_count++; |
| 2687 | /* erase the old error information */ |
| 2688 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2689 | return_status = IO_OK; |
| 2690 | INIT_COMPLETION(wait); |
| 2691 | goto resend_cmd2; |
| 2692 | } |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2693 | |
| 2694 | command_done: |
| 2695 | /* unlock the buffers from DMA */ |
| 2696 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
| 2697 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; |
| 2698 | pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val, |
| 2699 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
| 2700 | return return_status; |
| 2701 | } |
| 2702 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2703 | static int sendcmd_withirq(ctlr_info_t *h, __u8 cmd, void *buff, size_t size, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2704 | __u8 page_code, unsigned char scsi3addr[], |
| 2705 | int cmd_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2706 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | CommandList_struct *c; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | int return_status; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2709 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 2710 | c = cmd_special_alloc(h); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2711 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2712 | return -ENOMEM; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2713 | return_status = fill_cmd(h, c, cmd, buff, size, page_code, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2714 | scsi3addr, cmd_type); |
scameron@beardog.cca.cpqcorp.net | 5390cfc | 2009-06-08 16:01:11 -0500 | [diff] [blame] | 2715 | if (return_status == IO_OK) |
scameron@beardog.cca.cpqcorp.net | 789a424 | 2009-06-08 16:05:56 -0500 | [diff] [blame] | 2716 | return_status = sendcmd_withirq_core(h, c, 1); |
| 2717 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 2718 | cmd_special_free(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2719 | return return_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2721 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2722 | static void cciss_geometry_inquiry(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2723 | sector_t total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2724 | unsigned int block_size, |
| 2725 | InquiryData_struct *inq_buff, |
| 2726 | drive_info_struct *drv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2727 | { |
| 2728 | int return_code; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2729 | unsigned long t; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2730 | unsigned char scsi3addr[8]; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2731 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2732 | memset(inq_buff, 0, sizeof(InquiryData_struct)); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2733 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2734 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2735 | sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2736 | if (return_code == IO_OK) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2737 | if (inq_buff->data_byte[8] == 0xFF) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2738 | dev_warn(&h->pdev->dev, |
| 2739 | "reading geometry failed, volume " |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2740 | "does not support reading geometry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2741 | drv->heads = 255; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 2742 | drv->sectors = 32; /* Sectors per track */ |
Mike Miller (OS Dev) | 7f42d3b | 2007-04-04 19:08:23 -0700 | [diff] [blame] | 2743 | drv->cylinders = total_size + 1; |
Mike Miller | 89f97ad | 2006-12-18 10:59:39 +0100 | [diff] [blame] | 2744 | drv->raid_level = RAID_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2746 | drv->heads = inq_buff->data_byte[6]; |
| 2747 | drv->sectors = inq_buff->data_byte[7]; |
| 2748 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; |
| 2749 | drv->cylinders += inq_buff->data_byte[5]; |
| 2750 | drv->raid_level = inq_buff->data_byte[8]; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2751 | } |
| 2752 | drv->block_size = block_size; |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2753 | drv->nr_blocks = total_size + 1; |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2754 | t = drv->heads * drv->sectors; |
| 2755 | if (t > 1) { |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2756 | sector_t real_size = total_size + 1; |
| 2757 | unsigned long rem = sector_div(real_size, t); |
Matthew Wilcox | 3f7705e | 2006-10-21 10:24:19 -0700 | [diff] [blame] | 2758 | if (rem) |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2759 | real_size++; |
| 2760 | drv->cylinders = real_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2761 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2762 | } else { /* Get geometry failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2763 | dev_warn(&h->pdev->dev, "reading geometry failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2767 | static void |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2768 | cciss_read_capacity(ctlr_info_t *h, int logvol, sector_t *total_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2769 | unsigned int *block_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2770 | { |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2771 | ReadCapdata_struct *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2772 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2773 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2774 | |
| 2775 | buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL); |
| 2776 | if (!buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2777 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2778 | return; |
| 2779 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2780 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2781 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2782 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY, buf, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2783 | sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2784 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b3 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2785 | *total_size = be32_to_cpu(*(__be32 *) buf->total_size); |
| 2786 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2787 | } else { /* read capacity command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2788 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | *total_size = 0; |
| 2790 | *block_size = BLOCK_SIZE; |
| 2791 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2792 | kfree(buf); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2793 | } |
| 2794 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2795 | static void cciss_read_capacity_16(ctlr_info_t *h, int logvol, |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2796 | sector_t *total_size, unsigned int *block_size) |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2797 | { |
| 2798 | ReadCapdata_struct_16 *buf; |
| 2799 | int return_code; |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 2800 | unsigned char scsi3addr[8]; |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2801 | |
| 2802 | buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL); |
| 2803 | if (!buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2804 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2805 | return; |
| 2806 | } |
Mariusz Kozlowski | 1aebe18 | 2007-08-11 22:34:29 +0200 | [diff] [blame] | 2807 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2808 | log_unit_to_scsi3addr(h, scsi3addr, logvol); |
| 2809 | return_code = sendcmd_withirq(h, CCISS_READ_CAPACITY_16, |
| 2810 | buf, sizeof(ReadCapdata_struct_16), |
Stephen M. Cameron | 7b838bd | 2009-11-12 12:49:30 -0600 | [diff] [blame] | 2811 | 0, scsi3addr, TYPE_CMD); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2812 | if (return_code == IO_OK) { |
Al Viro | 4c1f2b3 | 2007-03-14 09:19:10 +0000 | [diff] [blame] | 2813 | *total_size = be64_to_cpu(*(__be64 *) buf->total_size); |
| 2814 | *block_size = be32_to_cpu(*(__be32 *) buf->block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2815 | } else { /* read capacity command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2816 | dev_warn(&h->pdev->dev, "read capacity failed\n"); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2817 | *total_size = 0; |
| 2818 | *block_size = BLOCK_SIZE; |
| 2819 | } |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2820 | dev_info(&h->pdev->dev, " blocks= %llu block_size= %d\n", |
Mike Miller (OS Dev) | 97c0697 | 2007-03-06 01:42:14 -0800 | [diff] [blame] | 2821 | (unsigned long long)*total_size+1, *block_size); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2822 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2823 | } |
| 2824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2825 | static int cciss_revalidate(struct gendisk *disk) |
| 2826 | { |
| 2827 | ctlr_info_t *h = get_host(disk); |
| 2828 | drive_info_struct *drv = get_drv(disk); |
| 2829 | int logvol; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2830 | int FOUND = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2831 | unsigned int block_size; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2832 | sector_t total_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | InquiryData_struct *inq_buff = NULL; |
| 2834 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2835 | for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) { |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 2836 | if (memcmp(h->drv[logvol]->LunID, drv->LunID, |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 2837 | sizeof(drv->LunID)) == 0) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2838 | FOUND = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2839 | break; |
| 2840 | } |
| 2841 | } |
| 2842 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2843 | if (!FOUND) |
| 2844 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2845 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2846 | inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 2847 | if (inq_buff == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2848 | dev_warn(&h->pdev->dev, "out of memory\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2849 | return 1; |
| 2850 | } |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2851 | if (h->cciss_read == CCISS_READ_10) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2852 | cciss_read_capacity(h, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2853 | &total_size, &block_size); |
| 2854 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2855 | cciss_read_capacity_16(h, logvol, |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 2856 | &total_size, &block_size); |
| 2857 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2858 | cciss_geometry_inquiry(h, logvol, total_size, block_size, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2859 | inq_buff, drv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2860 | |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 2861 | blk_queue_logical_block_size(drv->queue, drv->block_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | set_capacity(disk, drv->nr_blocks); |
| 2863 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2864 | kfree(inq_buff); |
| 2865 | return 0; |
| 2866 | } |
| 2867 | |
| 2868 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2869 | * Map (physical) PCI mem into (virtual) kernel space |
| 2870 | */ |
| 2871 | static void __iomem *remap_pci_mem(ulong base, ulong size) |
| 2872 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2873 | ulong page_base = ((ulong) base) & PAGE_MASK; |
| 2874 | ulong page_offs = ((ulong) base) - page_base; |
| 2875 | void __iomem *page_remapped = ioremap(page_base, page_offs + size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2876 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2877 | return page_remapped ? (page_remapped + page_offs) : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2878 | } |
| 2879 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2880 | /* |
| 2881 | * Takes jobs of the Q and sends them to the hardware, then puts it on |
| 2882 | * the Q to wait for completion. |
| 2883 | */ |
| 2884 | static void start_io(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | { |
| 2886 | CommandList_struct *c; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2887 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2888 | while (!hlist_empty(&h->reqQ)) { |
| 2889 | c = hlist_entry(h->reqQ.first, CommandList_struct, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | /* can't do anything if fifo is full */ |
| 2891 | if ((h->access.fifo_full(h))) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2892 | dev_warn(&h->pdev->dev, "fifo full\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2893 | break; |
| 2894 | } |
| 2895 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2896 | /* Get the first entry from the Request Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2897 | removeQ(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | h->Qdepth--; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2899 | |
| 2900 | /* Tell the controller execute command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2901 | h->access.submit_command(h, c); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2902 | |
| 2903 | /* Put job onto the completed Q */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2904 | addQ(&h->cmpQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | } |
| 2906 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2907 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 2908 | /* Assumes that h->lock is held. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2909 | /* Zeros out the error record and then resends the command back */ |
| 2910 | /* to the controller */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2911 | 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] | 2912 | { |
| 2913 | /* erase the old error information */ |
| 2914 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); |
| 2915 | |
| 2916 | /* add it to software queue and then send it to the controller */ |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 2917 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2918 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2919 | if (h->Qdepth > h->maxQsinceinit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2920 | h->maxQsinceinit = h->Qdepth; |
| 2921 | |
| 2922 | start_io(h); |
| 2923 | } |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 2924 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2925 | static inline unsigned int make_status_bytes(unsigned int scsi_status_byte, |
| 2926 | unsigned int msg_byte, unsigned int host_byte, |
| 2927 | unsigned int driver_byte) |
| 2928 | { |
| 2929 | /* inverse of macros in scsi.h */ |
| 2930 | return (scsi_status_byte & 0xff) | |
| 2931 | ((msg_byte & 0xff) << 8) | |
| 2932 | ((host_byte & 0xff) << 16) | |
| 2933 | ((driver_byte & 0xff) << 24); |
| 2934 | } |
| 2935 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2936 | static inline int evaluate_target_status(ctlr_info_t *h, |
| 2937 | CommandList_struct *cmd, int *retry_cmd) |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2938 | { |
| 2939 | unsigned char sense_key; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2940 | unsigned char status_byte, msg_byte, host_byte, driver_byte; |
| 2941 | int error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2942 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2943 | *retry_cmd = 0; |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2944 | /* If we get in here, it means we got "target status", that is, scsi status */ |
| 2945 | status_byte = cmd->err_info->ScsiStatus; |
| 2946 | driver_byte = DRIVER_OK; |
| 2947 | msg_byte = cmd->err_info->CommandStatus; /* correct? seems too device specific */ |
| 2948 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 2949 | if (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2950 | host_byte = DID_PASSTHROUGH; |
| 2951 | else |
| 2952 | host_byte = DID_OK; |
| 2953 | |
| 2954 | error_value = make_status_bytes(status_byte, msg_byte, |
| 2955 | host_byte, driver_byte); |
| 2956 | |
| 2957 | if (cmd->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION) { |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 2958 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2959 | dev_warn(&h->pdev->dev, "cmd %p " |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2960 | "has SCSI Status 0x%x\n", |
| 2961 | cmd, cmd->err_info->ScsiStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2962 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2963 | } |
| 2964 | |
| 2965 | /* check the sense key */ |
| 2966 | sense_key = 0xf & cmd->err_info->SenseInfo[2]; |
| 2967 | /* no status or recovered error */ |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 2968 | if (((sense_key == 0x0) || (sense_key == 0x1)) && |
| 2969 | (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC)) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2970 | error_value = 0; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2971 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2972 | if (check_for_unit_attention(h, cmd)) { |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 2973 | *retry_cmd = !(cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 2974 | return 0; |
| 2975 | } |
| 2976 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 2977 | /* Not SG_IO or similar? */ |
| 2978 | if (cmd->rq->cmd_type != REQ_TYPE_BLOCK_PC) { |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2979 | if (error_value != 0) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 2980 | dev_warn(&h->pdev->dev, "cmd %p has CHECK CONDITION" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2981 | " sense key = 0x%x\n", cmd, sense_key); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2982 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2983 | } |
| 2984 | |
| 2985 | /* SG_IO or similar, copy sense data back */ |
| 2986 | if (cmd->rq->sense) { |
| 2987 | if (cmd->rq->sense_len > cmd->err_info->SenseLen) |
| 2988 | cmd->rq->sense_len = cmd->err_info->SenseLen; |
| 2989 | memcpy(cmd->rq->sense, cmd->err_info->SenseInfo, |
| 2990 | cmd->rq->sense_len); |
| 2991 | } else |
| 2992 | cmd->rq->sense_len = 0; |
| 2993 | |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 2994 | return error_value; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 2995 | } |
| 2996 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 2997 | /* 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] | 2998 | * buffers for the completed job. Note that this function does not need |
| 2999 | * to hold the hba/queue lock. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3000 | */ |
| 3001 | static inline void complete_command(ctlr_info_t *h, CommandList_struct *cmd, |
| 3002 | int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3003 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3004 | int retry_cmd = 0; |
Mike Miller (OS Dev) | 198b766 | 2007-05-08 00:29:34 -0700 | [diff] [blame] | 3005 | struct request *rq = cmd->rq; |
| 3006 | |
| 3007 | rq->errors = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3008 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3009 | if (timeout) |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3010 | rq->errors = make_status_bytes(0, 0, 0, DRIVER_TIMEOUT); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3011 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3012 | if (cmd->err_info->CommandStatus == 0) /* no error has occurred */ |
| 3013 | goto after_error_processing; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3014 | |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3015 | switch (cmd->err_info->CommandStatus) { |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3016 | case CMD_TARGET_STATUS: |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3017 | rq->errors = evaluate_target_status(h, cmd, &retry_cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3018 | break; |
| 3019 | case CMD_DATA_UNDERRUN: |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3020 | if (cmd->rq->cmd_type == REQ_TYPE_FS) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3021 | dev_warn(&h->pdev->dev, "cmd %p has" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3022 | " completed with data underrun " |
| 3023 | "reported\n", cmd); |
Tejun Heo | c3a4d78 | 2009-05-07 22:24:37 +0900 | [diff] [blame] | 3024 | cmd->rq->resid_len = cmd->err_info->ResidualCnt; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3025 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3026 | break; |
| 3027 | case CMD_DATA_OVERRUN: |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3028 | if (cmd->rq->cmd_type == REQ_TYPE_FS) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3029 | dev_warn(&h->pdev->dev, "cciss: cmd %p has" |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3030 | " completed with data overrun " |
| 3031 | "reported\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3032 | break; |
| 3033 | case CMD_INVALID: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3034 | dev_warn(&h->pdev->dev, "cciss: cmd %p is " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3035 | "reported invalid\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3036 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3037 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3038 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3039 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3040 | break; |
| 3041 | case CMD_PROTOCOL_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3042 | dev_warn(&h->pdev->dev, "cciss: cmd %p has " |
| 3043 | "protocol error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3044 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3045 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3046 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3047 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3048 | break; |
| 3049 | case CMD_HARDWARE_ERR: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3050 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3051 | " hardware error\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3052 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3053 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3054 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3055 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3056 | break; |
| 3057 | case CMD_CONNECTION_LOST: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3058 | dev_warn(&h->pdev->dev, "cciss: cmd %p had " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3059 | "connection lost\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3060 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3061 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3062 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3063 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3064 | break; |
| 3065 | case CMD_ABORTED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3066 | dev_warn(&h->pdev->dev, "cciss: cmd %p was " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3067 | "aborted\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3068 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3069 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3070 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3071 | DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3072 | break; |
| 3073 | case CMD_ABORT_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3074 | dev_warn(&h->pdev->dev, "cciss: cmd %p reports " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3075 | "abort failed\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3076 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3077 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3078 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3079 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3080 | break; |
| 3081 | case CMD_UNSOLICITED_ABORT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3082 | dev_warn(&h->pdev->dev, "cciss%d: unsolicited " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3083 | "abort %p\n", h->ctlr, cmd); |
| 3084 | if (cmd->retry_count < MAX_CMD_RETRIES) { |
| 3085 | retry_cmd = 1; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3086 | dev_warn(&h->pdev->dev, "retrying %p\n", cmd); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3087 | cmd->retry_count++; |
| 3088 | } else |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3089 | dev_warn(&h->pdev->dev, |
| 3090 | "%p retried too many times\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3091 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3092 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3093 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3094 | DID_PASSTHROUGH : DID_ABORT); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3095 | break; |
| 3096 | case CMD_TIMEOUT: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3097 | dev_warn(&h->pdev->dev, "cmd %p timedout\n", cmd); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3098 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3099 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3100 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3101 | DID_PASSTHROUGH : DID_ERROR); |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3102 | break; |
| 3103 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3104 | dev_warn(&h->pdev->dev, "cmd %p returned " |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3105 | "unknown status %x\n", cmd, |
| 3106 | cmd->err_info->CommandStatus); |
Steve Cameron | 1a614f5 | 2007-10-16 23:27:37 -0700 | [diff] [blame] | 3107 | rq->errors = make_status_bytes(SAM_STAT_GOOD, |
| 3108 | cmd->err_info->CommandStatus, DRIVER_OK, |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3109 | (cmd->rq->cmd_type == REQ_TYPE_BLOCK_PC) ? |
| 3110 | DID_PASSTHROUGH : DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3111 | } |
Mike Miller (OS Dev) | d38ae16 | 2007-05-08 00:29:29 -0700 | [diff] [blame] | 3112 | |
| 3113 | after_error_processing: |
| 3114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3115 | /* We need to return this command */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3116 | if (retry_cmd) { |
| 3117 | resend_cciss_cmd(h, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3118 | return; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3119 | } |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3120 | cmd->rq->completion_data = cmd; |
Jens Axboe | a9925a0 | 2006-01-09 16:04:06 +0100 | [diff] [blame] | 3121 | blk_complete_request(cmd->rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3122 | } |
| 3123 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3124 | static inline u32 cciss_tag_contains_index(u32 tag) |
| 3125 | { |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3126 | #define DIRECT_LOOKUP_BIT 0x10 |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3127 | return tag & DIRECT_LOOKUP_BIT; |
| 3128 | } |
| 3129 | |
| 3130 | static inline u32 cciss_tag_to_index(u32 tag) |
| 3131 | { |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3132 | #define DIRECT_LOOKUP_SHIFT 5 |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3133 | return tag >> DIRECT_LOOKUP_SHIFT; |
| 3134 | } |
| 3135 | |
| 3136 | static inline u32 cciss_tag_discard_error_bits(u32 tag) |
| 3137 | { |
| 3138 | #define CCISS_ERROR_BITS 0x03 |
| 3139 | return tag & ~CCISS_ERROR_BITS; |
| 3140 | } |
| 3141 | |
| 3142 | static inline void cciss_mark_tag_indexed(u32 *tag) |
| 3143 | { |
| 3144 | *tag |= DIRECT_LOOKUP_BIT; |
| 3145 | } |
| 3146 | |
| 3147 | static inline void cciss_set_tag_index(u32 *tag, u32 index) |
| 3148 | { |
| 3149 | *tag |= (index << DIRECT_LOOKUP_SHIFT); |
| 3150 | } |
| 3151 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3152 | /* |
| 3153 | * Get a request and submit it to the controller. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3154 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 3155 | static void do_cciss_request(struct request_queue *q) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3156 | { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3157 | ctlr_info_t *h = q->queuedata; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3158 | CommandList_struct *c; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3159 | sector_t start_blk; |
| 3160 | int seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3161 | struct request *creq; |
| 3162 | u64bit temp64; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3163 | struct scatterlist *tmp_sg; |
| 3164 | SGDescriptor_struct *curr_sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3165 | drive_info_struct *drv; |
| 3166 | int i, dir; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3167 | int sg_index = 0; |
| 3168 | int chained = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3169 | |
| 3170 | /* We call start_io here in case there is a command waiting on the |
| 3171 | * queue that has not been sent. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3172 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3173 | if (blk_queue_plugged(q)) |
| 3174 | goto startio; |
| 3175 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3176 | queue: |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3177 | creq = blk_peek_request(q); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3178 | if (!creq) |
| 3179 | goto startio; |
| 3180 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3181 | BUG_ON(creq->nr_phys_segments > h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3182 | |
Stephen M. Cameron | 6b4d96b | 2010-07-19 13:46:43 -0500 | [diff] [blame] | 3183 | c = cmd_alloc(h); |
| 3184 | if (!c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3185 | goto full; |
| 3186 | |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 3187 | blk_start_request(creq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3188 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3189 | tmp_sg = h->scatter_list[c->cmdindex]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3190 | spin_unlock_irq(q->queue_lock); |
| 3191 | |
| 3192 | c->cmd_type = CMD_RWREQ; |
| 3193 | c->rq = creq; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3194 | |
| 3195 | /* fill in the request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3196 | drv = creq->rq_disk->private_data; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3197 | c->Header.ReplyQueue = 0; /* unused in simple mode */ |
Mike Miller | 33079b2 | 2005-09-13 01:25:22 -0700 | [diff] [blame] | 3198 | /* got command from pool, so use the command block index instead */ |
| 3199 | /* for direct lookups. */ |
| 3200 | /* The first 2 bits are reserved for controller error reporting. */ |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3201 | cciss_set_tag_index(&c->Header.Tag.lower, c->cmdindex); |
| 3202 | cciss_mark_tag_indexed(&c->Header.Tag.lower); |
Stephen M. Cameron | 39ccf9a | 2009-09-17 13:48:00 -0500 | [diff] [blame] | 3203 | memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID)); |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3204 | c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */ |
| 3205 | c->Request.Type.Type = TYPE_CMD; /* It is a command. */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3206 | c->Request.Type.Attribute = ATTR_SIMPLE; |
| 3207 | c->Request.Type.Direction = |
Mike Miller | a52de24 | 2006-12-18 11:00:14 +0100 | [diff] [blame] | 3208 | (rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3209 | c->Request.Timeout = 0; /* Don't time out */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3210 | c->Request.CDB[0] = |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3211 | (rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3212 | start_blk = blk_rq_pos(creq); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3213 | dev_dbg(&h->pdev->dev, "sector =%d nr_sectors=%d\n", |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3214 | (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3215 | sg_init_table(tmp_sg, h->maxsgentries); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3216 | seg = blk_rq_map_sg(q, creq, tmp_sg); |
| 3217 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3218 | /* get the DMA records for the setup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3219 | if (c->Request.Type.Direction == XFER_READ) |
| 3220 | dir = PCI_DMA_FROMDEVICE; |
| 3221 | else |
| 3222 | dir = PCI_DMA_TODEVICE; |
| 3223 | |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3224 | curr_sg = c->SG; |
| 3225 | sg_index = 0; |
| 3226 | chained = 0; |
| 3227 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3228 | for (i = 0; i < seg; i++) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3229 | if (((sg_index+1) == (h->max_cmd_sgentries)) && |
| 3230 | !chained && ((seg - i) > 1)) { |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3231 | /* Point to next chain block. */ |
Stephen M. Cameron | dccc9b5 | 2010-02-26 16:01:27 -0600 | [diff] [blame] | 3232 | curr_sg = h->cmd_sg_list[c->cmdindex]; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3233 | sg_index = 0; |
| 3234 | chained = 1; |
| 3235 | } |
| 3236 | curr_sg[sg_index].Len = tmp_sg[i].length; |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 3237 | temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3238 | tmp_sg[i].offset, |
| 3239 | tmp_sg[i].length, dir); |
| 3240 | curr_sg[sg_index].Addr.lower = temp64.val32.lower; |
| 3241 | curr_sg[sg_index].Addr.upper = temp64.val32.upper; |
| 3242 | curr_sg[sg_index].Ext = 0; /* we are not chaining */ |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3243 | ++sg_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3244 | } |
Stephen M. Cameron | d45033e | 2010-02-26 16:01:37 -0600 | [diff] [blame] | 3245 | if (chained) |
| 3246 | cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], |
| 3247 | (seg - (h->max_cmd_sgentries - 1)) * |
| 3248 | sizeof(SGDescriptor_struct)); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3249 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3250 | /* track how many SG entries we are using */ |
| 3251 | if (seg > h->maxSG) |
| 3252 | h->maxSG = seg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3253 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3254 | dev_dbg(&h->pdev->dev, "Submitting %u sectors in %d segments " |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3255 | "chained[%d]\n", |
| 3256 | blk_rq_sectors(creq), seg, chained); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3257 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3258 | c->Header.SGTotal = seg + chained; |
| 3259 | if (seg <= h->max_cmd_sgentries) |
| 3260 | c->Header.SGList = c->Header.SGTotal; |
| 3261 | else |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3262 | c->Header.SGList = h->max_cmd_sgentries; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3263 | set_performant_mode(h, c); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 3264 | |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3265 | if (likely(creq->cmd_type == REQ_TYPE_FS)) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3266 | if(h->cciss_read == CCISS_READ_10) { |
| 3267 | c->Request.CDB[1] = 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3268 | c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */ |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3269 | c->Request.CDB[3] = (start_blk >> 16) & 0xff; |
| 3270 | c->Request.CDB[4] = (start_blk >> 8) & 0xff; |
| 3271 | c->Request.CDB[5] = start_blk & 0xff; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3272 | c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */ |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3273 | c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3274 | c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3275 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; |
| 3276 | } else { |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3277 | u32 upper32 = upper_32_bits(start_blk); |
| 3278 | |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3279 | c->Request.CDBLen = 16; |
| 3280 | c->Request.CDB[1]= 0; |
dann frazier | b028461 | 2010-02-17 16:53:31 -0700 | [diff] [blame] | 3281 | c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */ |
Randy Dunlap | 582539e | 2008-02-06 01:36:54 -0800 | [diff] [blame] | 3282 | c->Request.CDB[3]= (upper32 >> 16) & 0xff; |
| 3283 | c->Request.CDB[4]= (upper32 >> 8) & 0xff; |
| 3284 | c->Request.CDB[5]= upper32 & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3285 | c->Request.CDB[6]= (start_blk >> 24) & 0xff; |
| 3286 | c->Request.CDB[7]= (start_blk >> 16) & 0xff; |
| 3287 | c->Request.CDB[8]= (start_blk >> 8) & 0xff; |
| 3288 | c->Request.CDB[9]= start_blk & 0xff; |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 3289 | c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff; |
| 3290 | c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff; |
| 3291 | c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff; |
| 3292 | c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff; |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3293 | c->Request.CDB[14] = c->Request.CDB[15] = 0; |
| 3294 | } |
Christoph Hellwig | 33659eb | 2010-08-07 18:17:56 +0200 | [diff] [blame] | 3295 | } else if (creq->cmd_type == REQ_TYPE_BLOCK_PC) { |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3296 | c->Request.CDBLen = creq->cmd_len; |
| 3297 | memcpy(c->Request.CDB, creq->cmd, BLK_MAX_CDB); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3298 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3299 | dev_warn(&h->pdev->dev, "bad request type %d\n", |
| 3300 | creq->cmd_type); |
Mike Miller (OS Dev) | 03bbfee | 2007-05-08 00:29:32 -0700 | [diff] [blame] | 3301 | BUG(); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3302 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3303 | |
| 3304 | spin_lock_irq(q->queue_lock); |
| 3305 | |
Jens Axboe | 8a3173d | 2008-11-20 09:46:09 +0100 | [diff] [blame] | 3306 | addQ(&h->reqQ, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3307 | h->Qdepth++; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3308 | if (h->Qdepth > h->maxQsinceinit) |
| 3309 | h->maxQsinceinit = h->Qdepth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3310 | |
| 3311 | goto queue; |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3312 | full: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3313 | blk_stop_queue(q); |
Mike Miller (OS Dev) | 00988a3 | 2006-09-30 23:27:23 -0700 | [diff] [blame] | 3314 | startio: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3315 | /* We will already have the driver lock here so not need |
| 3316 | * to lock it. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3317 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3318 | start_io(h); |
| 3319 | } |
| 3320 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3321 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
| 3322 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3323 | return h->access.command_completed(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3324 | } |
| 3325 | |
| 3326 | static inline int interrupt_pending(ctlr_info_t *h) |
| 3327 | { |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3328 | return h->access.intr_pending(h); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3329 | } |
| 3330 | |
| 3331 | static inline long interrupt_not_for_us(ctlr_info_t *h) |
| 3332 | { |
Stephen M. Cameron | 8112586 | 2010-07-19 13:46:54 -0500 | [diff] [blame] | 3333 | return ((h->access.intr_pending(h) == 0) || |
Mike Miller | 2cf3af1 | 2010-06-02 12:58:02 -0700 | [diff] [blame] | 3334 | (h->interrupts_enabled == 0)); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3335 | } |
| 3336 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3337 | static inline int bad_tag(ctlr_info_t *h, u32 tag_index, |
| 3338 | u32 raw_tag) |
| 3339 | { |
| 3340 | if (unlikely(tag_index >= h->nr_cmds)) { |
| 3341 | dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag); |
| 3342 | return 1; |
| 3343 | } |
| 3344 | return 0; |
| 3345 | } |
| 3346 | |
| 3347 | static inline void finish_cmd(ctlr_info_t *h, CommandList_struct *c, |
| 3348 | u32 raw_tag) |
| 3349 | { |
| 3350 | removeQ(c); |
| 3351 | if (likely(c->cmd_type == CMD_RWREQ)) |
| 3352 | complete_command(h, c, 0); |
| 3353 | else if (c->cmd_type == CMD_IOCTL_PEND) |
| 3354 | complete(c->waiting); |
| 3355 | #ifdef CONFIG_CISS_SCSI_TAPE |
| 3356 | else if (c->cmd_type == CMD_SCSI) |
| 3357 | complete_scsi_command(c, 0, raw_tag); |
| 3358 | #endif |
| 3359 | } |
| 3360 | |
Mike Miller | 29979a7 | 2010-06-11 13:13:35 +0200 | [diff] [blame] | 3361 | static inline u32 next_command(ctlr_info_t *h) |
| 3362 | { |
| 3363 | u32 a; |
| 3364 | |
| 3365 | if (unlikely(h->transMethod != CFGTBL_Trans_Performant)) |
| 3366 | return h->access.command_completed(h); |
| 3367 | |
| 3368 | if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) { |
| 3369 | a = *(h->reply_pool_head); /* Next cmd in ring buffer */ |
| 3370 | (h->reply_pool_head)++; |
| 3371 | h->commands_outstanding--; |
| 3372 | } else { |
| 3373 | a = FIFO_EMPTY; |
| 3374 | } |
| 3375 | /* Check for wraparound */ |
| 3376 | if (h->reply_pool_head == (h->reply_pool + h->max_commands)) { |
| 3377 | h->reply_pool_head = h->reply_pool; |
| 3378 | h->reply_pool_wraparound ^= 1; |
| 3379 | } |
| 3380 | return a; |
| 3381 | } |
| 3382 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3383 | /* process completion of an indexed ("direct lookup") command */ |
| 3384 | static inline u32 process_indexed_cmd(ctlr_info_t *h, u32 raw_tag) |
| 3385 | { |
| 3386 | u32 tag_index; |
| 3387 | CommandList_struct *c; |
| 3388 | |
| 3389 | tag_index = cciss_tag_to_index(raw_tag); |
| 3390 | if (bad_tag(h, tag_index, raw_tag)) |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3391 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3392 | c = h->cmd_pool + tag_index; |
| 3393 | finish_cmd(h, c, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3394 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3395 | } |
| 3396 | |
| 3397 | /* process completion of a non-indexed command */ |
| 3398 | static inline u32 process_nonindexed_cmd(ctlr_info_t *h, u32 raw_tag) |
| 3399 | { |
| 3400 | u32 tag; |
| 3401 | CommandList_struct *c = NULL; |
| 3402 | struct hlist_node *tmp; |
| 3403 | __u32 busaddr_masked, tag_masked; |
| 3404 | |
| 3405 | tag = cciss_tag_discard_error_bits(raw_tag); |
| 3406 | hlist_for_each_entry(c, tmp, &h->cmpQ, list) { |
| 3407 | busaddr_masked = cciss_tag_discard_error_bits(c->busaddr); |
| 3408 | tag_masked = cciss_tag_discard_error_bits(tag); |
| 3409 | if (busaddr_masked == tag_masked) { |
| 3410 | finish_cmd(h, c, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3411 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3412 | } |
| 3413 | } |
| 3414 | bad_tag(h, h->nr_cmds + 1, raw_tag); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3415 | return next_command(h); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3416 | } |
| 3417 | |
| 3418 | static irqreturn_t do_cciss_intx(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3419 | { |
| 3420 | ctlr_info_t *h = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3421 | unsigned long flags; |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3422 | u32 raw_tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3423 | |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3424 | if (interrupt_not_for_us(h)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3425 | return IRQ_NONE; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3426 | spin_lock_irqsave(&h->lock, flags); |
mike.miller@hp.com | 3da8b71 | 2005-11-04 12:30:37 -0600 | [diff] [blame] | 3427 | while (interrupt_pending(h)) { |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3428 | raw_tag = get_next_completion(h); |
| 3429 | while (raw_tag != FIFO_EMPTY) { |
| 3430 | if (cciss_tag_contains_index(raw_tag)) |
| 3431 | raw_tag = process_indexed_cmd(h, raw_tag); |
| 3432 | else |
| 3433 | raw_tag = process_nonindexed_cmd(h, raw_tag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3434 | } |
| 3435 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3436 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3437 | return IRQ_HANDLED; |
| 3438 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3439 | |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3440 | /* Add a second interrupt handler for MSI/MSI-X mode. In this mode we never |
| 3441 | * check the interrupt pending register because it is not set. |
| 3442 | */ |
| 3443 | static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id) |
| 3444 | { |
| 3445 | ctlr_info_t *h = dev_id; |
| 3446 | unsigned long flags; |
| 3447 | u32 raw_tag; |
| 3448 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3449 | spin_lock_irqsave(&h->lock, flags); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 3450 | raw_tag = get_next_completion(h); |
| 3451 | while (raw_tag != FIFO_EMPTY) { |
| 3452 | if (cciss_tag_contains_index(raw_tag)) |
| 3453 | raw_tag = process_indexed_cmd(h, raw_tag); |
| 3454 | else |
| 3455 | raw_tag = process_nonindexed_cmd(h, raw_tag); |
| 3456 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3457 | spin_unlock_irqrestore(&h->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3458 | return IRQ_HANDLED; |
| 3459 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3460 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3461 | /** |
| 3462 | * add_to_scan_list() - add controller to rescan queue |
| 3463 | * @h: Pointer to the controller. |
| 3464 | * |
| 3465 | * Adds the controller to the rescan queue if not already on the queue. |
| 3466 | * |
| 3467 | * returns 1 if added to the queue, 0 if skipped (could be on the |
| 3468 | * queue already, or the controller could be initializing or shutting |
| 3469 | * down). |
| 3470 | **/ |
| 3471 | static int add_to_scan_list(struct ctlr_info *h) |
| 3472 | { |
| 3473 | struct ctlr_info *test_h; |
| 3474 | int found = 0; |
| 3475 | int ret = 0; |
| 3476 | |
| 3477 | if (h->busy_initializing) |
| 3478 | return 0; |
| 3479 | |
| 3480 | if (!mutex_trylock(&h->busy_shutting_down)) |
| 3481 | return 0; |
| 3482 | |
| 3483 | mutex_lock(&scan_mutex); |
| 3484 | list_for_each_entry(test_h, &scan_q, scan_list) { |
| 3485 | if (test_h == h) { |
| 3486 | found = 1; |
| 3487 | break; |
| 3488 | } |
| 3489 | } |
| 3490 | if (!found && !h->busy_scanning) { |
| 3491 | INIT_COMPLETION(h->scan_wait); |
| 3492 | list_add_tail(&h->scan_list, &scan_q); |
| 3493 | ret = 1; |
| 3494 | } |
| 3495 | mutex_unlock(&scan_mutex); |
| 3496 | mutex_unlock(&h->busy_shutting_down); |
| 3497 | |
| 3498 | return ret; |
| 3499 | } |
| 3500 | |
| 3501 | /** |
| 3502 | * remove_from_scan_list() - remove controller from rescan queue |
| 3503 | * @h: Pointer to the controller. |
| 3504 | * |
| 3505 | * Removes the controller from the rescan queue if present. Blocks if |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3506 | * the controller is currently conducting a rescan. The controller |
| 3507 | * can be in one of three states: |
| 3508 | * 1. Doesn't need a scan |
| 3509 | * 2. On the scan list, but not scanning yet (we remove it) |
| 3510 | * 3. Busy scanning (and not on the list). In this case we want to wait for |
| 3511 | * the scan to complete to make sure the scanning thread for this |
| 3512 | * controller is completely idle. |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3513 | **/ |
| 3514 | static void remove_from_scan_list(struct ctlr_info *h) |
| 3515 | { |
| 3516 | struct ctlr_info *test_h, *tmp_h; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3517 | |
| 3518 | mutex_lock(&scan_mutex); |
| 3519 | list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) { |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3520 | if (test_h == h) { /* state 2. */ |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3521 | list_del(&h->scan_list); |
| 3522 | complete_all(&h->scan_wait); |
| 3523 | mutex_unlock(&scan_mutex); |
| 3524 | return; |
| 3525 | } |
| 3526 | } |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3527 | if (h->busy_scanning) { /* state 3. */ |
| 3528 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3529 | wait_for_completion(&h->scan_wait); |
Stephen M. Cameron | fd8489c | 2009-11-12 12:49:19 -0600 | [diff] [blame] | 3530 | } else { /* state 1, nothing to do. */ |
| 3531 | mutex_unlock(&scan_mutex); |
| 3532 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3533 | } |
| 3534 | |
| 3535 | /** |
| 3536 | * scan_thread() - kernel thread used to rescan controllers |
| 3537 | * @data: Ignored. |
| 3538 | * |
| 3539 | * A kernel thread used scan for drive topology changes on |
| 3540 | * controllers. The thread processes only one controller at a time |
| 3541 | * using a queue. Controllers are added to the queue using |
| 3542 | * add_to_scan_list() and removed from the queue either after done |
| 3543 | * processing or using remove_from_scan_list(). |
| 3544 | * |
| 3545 | * returns 0. |
| 3546 | **/ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3547 | static int scan_thread(void *data) |
| 3548 | { |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3549 | struct ctlr_info *h; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3550 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3551 | while (1) { |
| 3552 | set_current_state(TASK_INTERRUPTIBLE); |
| 3553 | schedule(); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3554 | if (kthread_should_stop()) |
| 3555 | break; |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3556 | |
| 3557 | while (1) { |
| 3558 | mutex_lock(&scan_mutex); |
| 3559 | if (list_empty(&scan_q)) { |
| 3560 | mutex_unlock(&scan_mutex); |
| 3561 | break; |
| 3562 | } |
| 3563 | |
| 3564 | h = list_entry(scan_q.next, |
| 3565 | struct ctlr_info, |
| 3566 | scan_list); |
| 3567 | list_del(&h->scan_list); |
| 3568 | h->busy_scanning = 1; |
| 3569 | mutex_unlock(&scan_mutex); |
| 3570 | |
Stephen M. Cameron | d06dfbd | 2009-11-12 12:49:50 -0600 | [diff] [blame] | 3571 | rebuild_lun_table(h, 0, 0); |
| 3572 | complete_all(&h->scan_wait); |
| 3573 | mutex_lock(&scan_mutex); |
| 3574 | h->busy_scanning = 0; |
| 3575 | mutex_unlock(&scan_mutex); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3576 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3577 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 3578 | |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3579 | return 0; |
| 3580 | } |
| 3581 | |
| 3582 | static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c) |
| 3583 | { |
| 3584 | if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) |
| 3585 | return 0; |
| 3586 | |
| 3587 | switch (c->err_info->SenseInfo[12]) { |
| 3588 | case STATE_CHANGED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3589 | dev_warn(&h->pdev->dev, "a state change " |
| 3590 | "detected, command retried\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3591 | return 1; |
| 3592 | break; |
| 3593 | case LUN_FAILED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3594 | dev_warn(&h->pdev->dev, "LUN failure " |
| 3595 | "detected, action required\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3596 | return 1; |
| 3597 | break; |
| 3598 | case REPORT_LUNS_CHANGED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3599 | dev_warn(&h->pdev->dev, "report LUN data changed\n"); |
Stephen M. Cameron | da00218 | 2009-11-12 12:49:55 -0600 | [diff] [blame] | 3600 | /* |
| 3601 | * Here, we could call add_to_scan_list and wake up the scan thread, |
| 3602 | * except that it's quite likely that we will get more than one |
| 3603 | * REPORT_LUNS_CHANGED condition in quick succession, which means |
| 3604 | * that those which occur after the first one will likely happen |
| 3605 | * *during* the scan_thread's rescan. And the rescan code is not |
| 3606 | * robust enough to restart in the middle, undoing what it has already |
| 3607 | * done, and it's not clear that it's even possible to do this, since |
| 3608 | * part of what it does is notify the block layer, which starts |
| 3609 | * doing it's own i/o to read partition tables and so on, and the |
| 3610 | * driver doesn't have visibility to know what might need undoing. |
| 3611 | * In any event, if possible, it is horribly complicated to get right |
| 3612 | * so we just don't do it for now. |
| 3613 | * |
| 3614 | * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012. |
| 3615 | */ |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3616 | return 1; |
| 3617 | break; |
| 3618 | case POWER_OR_RESET: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3619 | dev_warn(&h->pdev->dev, |
| 3620 | "a power on or device reset detected\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3621 | return 1; |
| 3622 | break; |
| 3623 | case UNIT_ATTENTION_CLEARED: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3624 | dev_warn(&h->pdev->dev, |
| 3625 | "unit attention cleared by another initiator\n"); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3626 | return 1; |
| 3627 | break; |
| 3628 | default: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3629 | dev_warn(&h->pdev->dev, "unknown unit attention detected\n"); |
| 3630 | return 1; |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 3631 | } |
| 3632 | } |
| 3633 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3634 | /* |
Bjorn Helgaas | d14c4ab | 2006-06-25 05:49:04 -0700 | [diff] [blame] | 3635 | * We cannot read the structure directly, for portability we must use |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3636 | * the io functions. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3637 | * This is for debug only. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3638 | */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3639 | static void print_cfg_table(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3640 | { |
| 3641 | int i; |
| 3642 | char temp_name[17]; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3643 | CfgTable_struct *tb = h->cfgtable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3644 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3645 | dev_dbg(&h->pdev->dev, "Controller Configuration information\n"); |
| 3646 | dev_dbg(&h->pdev->dev, "------------------------------------\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3647 | for (i = 0; i < 4; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3648 | temp_name[i] = readb(&(tb->Signature[i])); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3649 | temp_name[4] = '\0'; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3650 | dev_dbg(&h->pdev->dev, " Signature = %s\n", temp_name); |
| 3651 | dev_dbg(&h->pdev->dev, " Spec Number = %d\n", |
| 3652 | readl(&(tb->SpecValence))); |
| 3653 | dev_dbg(&h->pdev->dev, " Transport methods supported = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3654 | readl(&(tb->TransportSupport))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3655 | dev_dbg(&h->pdev->dev, " Transport methods active = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3656 | readl(&(tb->TransportActive))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3657 | dev_dbg(&h->pdev->dev, " Requested transport Method = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3658 | readl(&(tb->HostWrite.TransportRequest))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3659 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Delay = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3660 | readl(&(tb->HostWrite.CoalIntDelay))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3661 | dev_dbg(&h->pdev->dev, " Coalesce Interrupt Count = 0x%x\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3662 | readl(&(tb->HostWrite.CoalIntCount))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3663 | dev_dbg(&h->pdev->dev, " Max outstanding commands = 0x%d\n", |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3664 | readl(&(tb->CmdsOutMax))); |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3665 | dev_dbg(&h->pdev->dev, " Bus Types = 0x%x\n", |
| 3666 | readl(&(tb->BusTypes))); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3667 | for (i = 0; i < 16; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3668 | temp_name[i] = readb(&(tb->ServerName[i])); |
| 3669 | temp_name[16] = '\0'; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3670 | dev_dbg(&h->pdev->dev, " Server Name = %s\n", temp_name); |
| 3671 | dev_dbg(&h->pdev->dev, " Heartbeat Counter = 0x%x\n\n\n", |
| 3672 | readl(&(tb->HeartBeat))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3673 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3674 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3675 | 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] | 3676 | { |
| 3677 | int i, offset, mem_type, bar_type; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3678 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3679 | return 0; |
| 3680 | offset = 0; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3681 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 3682 | bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3683 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) |
| 3684 | offset += 4; |
| 3685 | else { |
| 3686 | mem_type = pci_resource_flags(pdev, i) & |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3687 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3688 | switch (mem_type) { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3689 | case PCI_BASE_ADDRESS_MEM_TYPE_32: |
| 3690 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: |
| 3691 | offset += 4; /* 32 bit */ |
| 3692 | break; |
| 3693 | case PCI_BASE_ADDRESS_MEM_TYPE_64: |
| 3694 | offset += 8; |
| 3695 | break; |
| 3696 | default: /* reserved in PCI 2.2 */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3697 | dev_warn(&pdev->dev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3698 | "Base address is invalid\n"); |
| 3699 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3700 | break; |
| 3701 | } |
| 3702 | } |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3703 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) |
| 3704 | return i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3705 | } |
| 3706 | return -1; |
| 3707 | } |
| 3708 | |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3709 | /* Fill in bucket_map[], given nsgs (the max number of |
| 3710 | * scatter gather elements supported) and bucket[], |
| 3711 | * which is an array of 8 integers. The bucket[] array |
| 3712 | * contains 8 different DMA transfer sizes (in 16 |
| 3713 | * byte increments) which the controller uses to fetch |
| 3714 | * commands. This function fills in bucket_map[], which |
| 3715 | * maps a given number of scatter gather elements to one of |
| 3716 | * the 8 DMA transfer sizes. The point of it is to allow the |
| 3717 | * controller to only do as much DMA as needed to fetch the |
| 3718 | * command, with the DMA transfer size encoded in the lower |
| 3719 | * bits of the command address. |
| 3720 | */ |
| 3721 | static void calc_bucket_map(int bucket[], int num_buckets, |
| 3722 | int nsgs, int *bucket_map) |
| 3723 | { |
| 3724 | int i, j, b, size; |
| 3725 | |
| 3726 | /* even a command with 0 SGs requires 4 blocks */ |
| 3727 | #define MINIMUM_TRANSFER_BLOCKS 4 |
| 3728 | #define NUM_BUCKETS 8 |
| 3729 | /* Note, bucket_map must have nsgs+1 entries. */ |
| 3730 | for (i = 0; i <= nsgs; i++) { |
| 3731 | /* Compute size of a command with i SG entries */ |
| 3732 | size = i + MINIMUM_TRANSFER_BLOCKS; |
| 3733 | b = num_buckets; /* Assume the biggest bucket */ |
| 3734 | /* Find the bucket that is just big enough */ |
| 3735 | for (j = 0; j < 8; j++) { |
| 3736 | if (bucket[j] >= size) { |
| 3737 | b = j; |
| 3738 | break; |
| 3739 | } |
| 3740 | } |
| 3741 | /* for a command with i SG entries, use bucket b. */ |
| 3742 | bucket_map[i] = b; |
| 3743 | } |
| 3744 | } |
| 3745 | |
Stephen M. Cameron | 0f8a6a1 | 2010-07-19 13:46:01 -0500 | [diff] [blame] | 3746 | static void __devinit cciss_wait_for_mode_change_ack(ctlr_info_t *h) |
| 3747 | { |
| 3748 | int i; |
| 3749 | |
| 3750 | /* under certain very rare conditions, this can take awhile. |
| 3751 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right |
| 3752 | * as we enter this code.) */ |
| 3753 | for (i = 0; i < MAX_CONFIG_WAIT; i++) { |
| 3754 | if (!(readl(h->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) |
| 3755 | break; |
| 3756 | msleep(10); |
| 3757 | } |
| 3758 | } |
| 3759 | |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3760 | static __devinit void cciss_enter_performant_mode(ctlr_info_t *h) |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3761 | { |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3762 | /* This is a bit complicated. There are 8 registers on |
| 3763 | * the controller which we write to to tell it 8 different |
| 3764 | * sizes of commands which there may be. It's a way of |
| 3765 | * reducing the DMA done to fetch each command. Encoded into |
| 3766 | * each command's tag are 3 bits which communicate to the controller |
| 3767 | * which of the eight sizes that command fits within. The size of |
| 3768 | * each command depends on how many scatter gather entries there are. |
| 3769 | * Each SG entry requires 16 bytes. The eight registers are programmed |
| 3770 | * with the number of 16-byte blocks a command of that size requires. |
| 3771 | * The smallest command possible requires 5 such 16 byte blocks. |
| 3772 | * the largest command possible requires MAXSGENTRIES + 4 16-byte |
| 3773 | * blocks. Note, this only extends to the SG entries contained |
| 3774 | * within the command block, and does not extend to chained blocks |
| 3775 | * of SG elements. bft[] contains the eight values we write to |
| 3776 | * the registers. They are not evenly distributed, but have more |
| 3777 | * sizes for small commands, and fewer sizes for larger commands. |
| 3778 | */ |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3779 | __u32 trans_offset; |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3780 | int bft[8] = { 5, 6, 8, 10, 12, 20, 28, MAXSGENTRIES + 4}; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3781 | /* |
| 3782 | * 5 = 1 s/g entry or 4k |
| 3783 | * 6 = 2 s/g entry or 8k |
| 3784 | * 8 = 4 s/g entry or 16k |
| 3785 | * 10 = 6 s/g entry or 24k |
| 3786 | */ |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3787 | unsigned long register_value; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3788 | BUILD_BUG_ON(28 > MAXSGENTRIES + 4); |
| 3789 | |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3790 | h->reply_pool_wraparound = 1; /* spec: init to 1 */ |
| 3791 | |
| 3792 | /* Controller spec: zero out this buffer. */ |
| 3793 | memset(h->reply_pool, 0, h->max_commands * sizeof(__u64)); |
| 3794 | h->reply_pool_head = h->reply_pool; |
| 3795 | |
| 3796 | trans_offset = readl(&(h->cfgtable->TransMethodOffset)); |
| 3797 | calc_bucket_map(bft, ARRAY_SIZE(bft), h->maxsgentries, |
| 3798 | h->blockFetchTable); |
| 3799 | writel(bft[0], &h->transtable->BlockFetch0); |
| 3800 | writel(bft[1], &h->transtable->BlockFetch1); |
| 3801 | writel(bft[2], &h->transtable->BlockFetch2); |
| 3802 | writel(bft[3], &h->transtable->BlockFetch3); |
| 3803 | writel(bft[4], &h->transtable->BlockFetch4); |
| 3804 | writel(bft[5], &h->transtable->BlockFetch5); |
| 3805 | writel(bft[6], &h->transtable->BlockFetch6); |
| 3806 | writel(bft[7], &h->transtable->BlockFetch7); |
| 3807 | |
| 3808 | /* size of controller ring buffer */ |
| 3809 | writel(h->max_commands, &h->transtable->RepQSize); |
| 3810 | writel(1, &h->transtable->RepQCount); |
| 3811 | writel(0, &h->transtable->RepQCtrAddrLow32); |
| 3812 | writel(0, &h->transtable->RepQCtrAddrHigh32); |
| 3813 | writel(h->reply_pool_dhandle, &h->transtable->RepQAddr0Low32); |
| 3814 | writel(0, &h->transtable->RepQAddr0High32); |
| 3815 | writel(CFGTBL_Trans_Performant, |
| 3816 | &(h->cfgtable->HostWrite.TransportRequest)); |
| 3817 | |
| 3818 | writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL); |
| 3819 | cciss_wait_for_mode_change_ack(h); |
| 3820 | register_value = readl(&(h->cfgtable->TransportActive)); |
| 3821 | if (!(register_value & CFGTBL_Trans_Performant)) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3822 | dev_warn(&h->pdev->dev, "cciss: unable to get board into" |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3823 | " performant mode\n"); |
| 3824 | } |
| 3825 | |
| 3826 | static void __devinit cciss_put_controller_into_performant_mode(ctlr_info_t *h) |
| 3827 | { |
| 3828 | __u32 trans_support; |
| 3829 | |
Stephen M. Cameron | ff5f58f | 2010-07-19 13:45:51 -0500 | [diff] [blame] | 3830 | dev_dbg(&h->pdev->dev, "Trying to put board into Performant mode\n"); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3831 | /* Attempt to put controller into performant mode if supported */ |
| 3832 | /* Does board support performant mode? */ |
| 3833 | trans_support = readl(&(h->cfgtable->TransportSupport)); |
| 3834 | if (!(trans_support & PERFORMANT_MODE)) |
| 3835 | return; |
| 3836 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3837 | dev_dbg(&h->pdev->dev, "Placing controller into performant mode\n"); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3838 | /* Performant mode demands commands on a 32 byte boundary |
| 3839 | * pci_alloc_consistent aligns on page boundarys already. |
| 3840 | * Just need to check if divisible by 32 |
| 3841 | */ |
| 3842 | if ((sizeof(CommandList_struct) % 32) != 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3843 | dev_warn(&h->pdev->dev, "%s %d %s\n", |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3844 | "cciss info: command size[", |
| 3845 | (int)sizeof(CommandList_struct), |
| 3846 | "] not divisible by 32, no performant mode..\n"); |
| 3847 | return; |
| 3848 | } |
| 3849 | |
| 3850 | /* Performant mode ring buffer and supporting data structures */ |
| 3851 | h->reply_pool = (__u64 *)pci_alloc_consistent( |
| 3852 | h->pdev, h->max_commands * sizeof(__u64), |
| 3853 | &(h->reply_pool_dhandle)); |
| 3854 | |
| 3855 | /* Need a block fetch table for performant mode */ |
| 3856 | h->blockFetchTable = kmalloc(((h->maxsgentries+1) * |
| 3857 | sizeof(__u32)), GFP_KERNEL); |
| 3858 | |
| 3859 | if ((h->reply_pool == NULL) || (h->blockFetchTable == NULL)) |
| 3860 | goto clean_up; |
| 3861 | |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3862 | cciss_enter_performant_mode(h); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3863 | |
| 3864 | /* Change the access methods to the performant access methods */ |
| 3865 | h->access = SA5_performant_access; |
Stephen M. Cameron | b993313 | 2010-07-19 13:46:07 -0500 | [diff] [blame] | 3866 | h->transMethod = CFGTBL_Trans_Performant; |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 3867 | |
| 3868 | return; |
| 3869 | clean_up: |
| 3870 | kfree(h->blockFetchTable); |
| 3871 | if (h->reply_pool) |
| 3872 | pci_free_consistent(h->pdev, |
| 3873 | h->max_commands * sizeof(__u64), |
| 3874 | h->reply_pool, |
| 3875 | h->reply_pool_dhandle); |
| 3876 | return; |
| 3877 | |
| 3878 | } /* cciss_put_controller_into_performant_mode */ |
| 3879 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3880 | /* If MSI/MSI-X is supported by the kernel we will try to enable it on |
| 3881 | * controllers that are capable. If not, we use IO-APIC mode. |
| 3882 | */ |
| 3883 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3884 | static void __devinit cciss_interrupt_mode(ctlr_info_t *h) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3885 | { |
| 3886 | #ifdef CONFIG_PCI_MSI |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3887 | int err; |
| 3888 | struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1}, |
| 3889 | {0, 2}, {0, 3} |
| 3890 | }; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3891 | |
| 3892 | /* Some boards advertise MSI but don't really support it */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3893 | if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) || |
| 3894 | (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11)) |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3895 | goto default_int_mode; |
| 3896 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3897 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) { |
| 3898 | err = pci_enable_msix(h->pdev, cciss_msix_entries, 4); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3899 | if (!err) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3900 | h->intr[0] = cciss_msix_entries[0].vector; |
| 3901 | h->intr[1] = cciss_msix_entries[1].vector; |
| 3902 | h->intr[2] = cciss_msix_entries[2].vector; |
| 3903 | h->intr[3] = cciss_msix_entries[3].vector; |
| 3904 | h->msix_vector = 1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3905 | return; |
| 3906 | } |
| 3907 | if (err > 0) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3908 | dev_warn(&h->pdev->dev, |
| 3909 | "only %d MSI-X vectors available\n", err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3910 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3911 | } else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3912 | dev_warn(&h->pdev->dev, |
| 3913 | "MSI-X init failed %d\n", err); |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3914 | goto default_int_mode; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3915 | } |
| 3916 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3917 | if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) { |
| 3918 | if (!pci_enable_msi(h->pdev)) |
| 3919 | h->msi_vector = 1; |
| 3920 | else |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 3921 | dev_warn(&h->pdev->dev, "MSI init failed\n"); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3922 | } |
Mike Miller | 1ecb9c0 | 2006-12-06 20:35:13 -0800 | [diff] [blame] | 3923 | default_int_mode: |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 3924 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3925 | /* if we get here we're going to use the default interrupt mode */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 3926 | h->intr[PERF_MODE_INT] = h->pdev->irq; |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 3927 | return; |
| 3928 | } |
| 3929 | |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3930 | static int __devinit cciss_lookup_board_id(struct pci_dev *pdev, u32 *board_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3931 | { |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3932 | int i; |
| 3933 | u32 subsystem_vendor_id, subsystem_device_id; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3934 | |
| 3935 | subsystem_vendor_id = pdev->subsystem_vendor; |
| 3936 | subsystem_device_id = pdev->subsystem_device; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3937 | *board_id = ((subsystem_device_id << 16) & 0xffff0000) | |
| 3938 | subsystem_vendor_id; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3939 | |
| 3940 | for (i = 0; i < ARRAY_SIZE(products); i++) { |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3941 | if (*board_id == products[i].board_id) |
| 3942 | return i; |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 3943 | } |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 3944 | dev_warn(&pdev->dev, "unrecognized board ID: 0x%08x, ignoring.\n", |
| 3945 | *board_id); |
| 3946 | return -ENODEV; |
| 3947 | } |
| 3948 | |
Stephen M. Cameron | dd9c426 | 2010-07-19 13:45:00 -0500 | [diff] [blame] | 3949 | static inline bool cciss_board_disabled(ctlr_info_t *h) |
| 3950 | { |
| 3951 | u16 command; |
| 3952 | |
| 3953 | (void) pci_read_config_word(h->pdev, PCI_COMMAND, &command); |
| 3954 | return ((command & PCI_COMMAND_MEMORY) == 0); |
| 3955 | } |
| 3956 | |
Stephen M. Cameron | d474830 | 2010-07-19 13:45:10 -0500 | [diff] [blame] | 3957 | static int __devinit cciss_pci_find_memory_BAR(struct pci_dev *pdev, |
| 3958 | unsigned long *memory_bar) |
| 3959 | { |
| 3960 | int i; |
| 3961 | |
| 3962 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) |
| 3963 | if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { |
| 3964 | /* addressing mode bits already removed */ |
| 3965 | *memory_bar = pci_resource_start(pdev, i); |
| 3966 | dev_dbg(&pdev->dev, "memory BAR = %lx\n", |
| 3967 | *memory_bar); |
| 3968 | return 0; |
| 3969 | } |
| 3970 | dev_warn(&pdev->dev, "no memory BAR found\n"); |
| 3971 | return -ENODEV; |
| 3972 | } |
| 3973 | |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 3974 | static int __devinit cciss_wait_for_board_ready(ctlr_info_t *h) |
| 3975 | { |
| 3976 | int i; |
| 3977 | u32 scratchpad; |
| 3978 | |
| 3979 | for (i = 0; i < CCISS_BOARD_READY_ITERATIONS; i++) { |
| 3980 | scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET); |
| 3981 | if (scratchpad == CCISS_FIRMWARE_READY) |
| 3982 | return 0; |
| 3983 | msleep(CCISS_BOARD_READY_POLL_INTERVAL_MSECS); |
| 3984 | } |
| 3985 | dev_warn(&h->pdev->dev, "board not ready, timed out.\n"); |
| 3986 | return -ENODEV; |
| 3987 | } |
| 3988 | |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 3989 | static int __devinit cciss_find_cfg_addrs(struct pci_dev *pdev, |
| 3990 | void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, |
| 3991 | u64 *cfg_offset) |
| 3992 | { |
| 3993 | *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET); |
| 3994 | *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET); |
| 3995 | *cfg_base_addr &= (u32) 0x0000ffff; |
| 3996 | *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr); |
| 3997 | if (*cfg_base_addr_index == -1) { |
| 3998 | dev_warn(&pdev->dev, "cannot find cfg_base_addr_index, " |
| 3999 | "*cfg_base_addr = 0x%08x\n", *cfg_base_addr); |
Stephen M. Cameron | 2ec24ff | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4000 | return -ENODEV; |
| 4001 | } |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4002 | return 0; |
| 4003 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4004 | |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4005 | static int __devinit cciss_find_cfgtables(ctlr_info_t *h) |
| 4006 | { |
| 4007 | u64 cfg_offset; |
| 4008 | u32 cfg_base_addr; |
| 4009 | u64 cfg_base_addr_index; |
| 4010 | u32 trans_offset; |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4011 | int rc; |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4012 | |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4013 | rc = cciss_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr, |
| 4014 | &cfg_base_addr_index, &cfg_offset); |
| 4015 | if (rc) |
| 4016 | return rc; |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4017 | h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4018 | cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable)); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4019 | if (!h->cfgtable) |
| 4020 | return -ENOMEM; |
| 4021 | /* Find performant mode table. */ |
Stephen M. Cameron | 8e93bf6 | 2010-07-19 13:46:12 -0500 | [diff] [blame] | 4022 | trans_offset = readl(&h->cfgtable->TransMethodOffset); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4023 | h->transtable = remap_pci_mem(pci_resource_start(h->pdev, |
| 4024 | cfg_base_addr_index)+cfg_offset+trans_offset, |
| 4025 | sizeof(*h->transtable)); |
| 4026 | if (!h->transtable) |
| 4027 | return -ENOMEM; |
| 4028 | return 0; |
| 4029 | } |
| 4030 | |
Stephen M. Cameron | adfbc1f | 2010-07-19 13:46:28 -0500 | [diff] [blame] | 4031 | static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h) |
| 4032 | { |
| 4033 | h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); |
| 4034 | if (h->max_commands < 16) { |
| 4035 | dev_warn(&h->pdev->dev, "Controller reports " |
| 4036 | "max supported commands of %d, an obvious lie. " |
| 4037 | "Using 16. Ensure that firmware is up to date.\n", |
| 4038 | h->max_commands); |
| 4039 | h->max_commands = 16; |
| 4040 | } |
| 4041 | } |
| 4042 | |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4043 | /* Interrogate the hardware for some limits: |
| 4044 | * max commands, max SG elements without chaining, and with chaining, |
| 4045 | * SG chain block size, etc. |
| 4046 | */ |
| 4047 | static void __devinit cciss_find_board_params(ctlr_info_t *h) |
| 4048 | { |
Stephen M. Cameron | adfbc1f | 2010-07-19 13:46:28 -0500 | [diff] [blame] | 4049 | cciss_get_max_perf_mode_cmds(h); |
Stephen M. Cameron | afadbf4 | 2010-07-19 13:45:31 -0500 | [diff] [blame] | 4050 | h->nr_cmds = h->max_commands - 4; /* Allow room for some ioctls */ |
| 4051 | h->maxsgentries = readl(&(h->cfgtable->MaxSGElements)); |
| 4052 | /* |
| 4053 | * Limit in-command s/g elements to 32 save dma'able memory. |
| 4054 | * Howvever spec says if 0, use 31 |
| 4055 | */ |
| 4056 | h->max_cmd_sgentries = 31; |
| 4057 | if (h->maxsgentries > 512) { |
| 4058 | h->max_cmd_sgentries = 32; |
| 4059 | h->chainsize = h->maxsgentries - h->max_cmd_sgentries + 1; |
| 4060 | h->maxsgentries--; /* save one for chain pointer */ |
| 4061 | } else { |
| 4062 | h->maxsgentries = 31; /* default to traditional values */ |
| 4063 | h->chainsize = 0; |
| 4064 | } |
| 4065 | } |
| 4066 | |
Stephen M. Cameron | 501b92c | 2010-07-19 13:45:36 -0500 | [diff] [blame] | 4067 | static inline bool CISS_signature_present(ctlr_info_t *h) |
| 4068 | { |
| 4069 | if ((readb(&h->cfgtable->Signature[0]) != 'C') || |
| 4070 | (readb(&h->cfgtable->Signature[1]) != 'I') || |
| 4071 | (readb(&h->cfgtable->Signature[2]) != 'S') || |
| 4072 | (readb(&h->cfgtable->Signature[3]) != 'S')) { |
| 4073 | dev_warn(&h->pdev->dev, "not a valid CISS config table\n"); |
| 4074 | return false; |
| 4075 | } |
| 4076 | return true; |
| 4077 | } |
| 4078 | |
Stephen M. Cameron | 322e304 | 2010-07-19 13:45:41 -0500 | [diff] [blame] | 4079 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ |
| 4080 | static inline void cciss_enable_scsi_prefetch(ctlr_info_t *h) |
| 4081 | { |
| 4082 | #ifdef CONFIG_X86 |
| 4083 | u32 prefetch; |
| 4084 | |
| 4085 | prefetch = readl(&(h->cfgtable->SCSI_Prefetch)); |
| 4086 | prefetch |= 0x100; |
| 4087 | writel(prefetch, &(h->cfgtable->SCSI_Prefetch)); |
| 4088 | #endif |
| 4089 | } |
| 4090 | |
Stephen M. Cameron | bfd63ee | 2010-07-19 13:45:46 -0500 | [diff] [blame] | 4091 | /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result |
| 4092 | * in a prefetch beyond physical memory. |
| 4093 | */ |
| 4094 | static inline void cciss_p600_dma_prefetch_quirk(ctlr_info_t *h) |
| 4095 | { |
| 4096 | u32 dma_prefetch; |
| 4097 | __u32 dma_refetch; |
| 4098 | |
| 4099 | if (h->board_id != 0x3225103C) |
| 4100 | return; |
| 4101 | dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG); |
| 4102 | dma_prefetch |= 0x8000; |
| 4103 | writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG); |
| 4104 | pci_read_config_dword(h->pdev, PCI_COMMAND_PARITY, &dma_refetch); |
| 4105 | dma_refetch |= 0x1; |
| 4106 | pci_write_config_dword(h->pdev, PCI_COMMAND_PARITY, dma_refetch); |
| 4107 | } |
| 4108 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4109 | static int __devinit cciss_pci_init(ctlr_info_t *h) |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4110 | { |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4111 | int prod_index, err; |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4112 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4113 | prod_index = cciss_lookup_board_id(h->pdev, &h->board_id); |
Stephen M. Cameron | 6539fa9 | 2010-07-19 13:44:55 -0500 | [diff] [blame] | 4114 | if (prod_index < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4115 | return -ENODEV; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4116 | h->product_name = products[prod_index].product_name; |
| 4117 | h->access = *(products[prod_index].access); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4118 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4119 | if (cciss_board_disabled(h)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4120 | dev_warn(&h->pdev->dev, "controller appears to be disabled\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4121 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4122 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4123 | err = pci_enable_device(h->pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4124 | if (err) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4125 | dev_warn(&h->pdev->dev, "Unable to Enable PCI device\n"); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4126 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4127 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4128 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4129 | err = pci_request_regions(h->pdev, "cciss"); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4130 | if (err) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4131 | dev_warn(&h->pdev->dev, |
| 4132 | "Cannot obtain PCI resources, aborting\n"); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4133 | return err; |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4134 | } |
| 4135 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4136 | dev_dbg(&h->pdev->dev, "irq = %x\n", h->pdev->irq); |
| 4137 | dev_dbg(&h->pdev->dev, "board_id = %x\n", h->board_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4138 | |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4139 | /* If the kernel supports MSI/MSI-X we will try to enable that functionality, |
| 4140 | * else we use the IO-APIC interrupt assigned to us by system ROM. |
| 4141 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4142 | cciss_interrupt_mode(h); |
| 4143 | err = cciss_pci_find_memory_BAR(h->pdev, &h->paddr); |
Stephen M. Cameron | d474830 | 2010-07-19 13:45:10 -0500 | [diff] [blame] | 4144 | if (err) |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 4145 | goto err_out_free_res; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4146 | h->vaddr = remap_pci_mem(h->paddr, 0x250); |
| 4147 | if (!h->vaddr) { |
Stephen M. Cameron | da55032 | 2010-07-19 13:45:26 -0500 | [diff] [blame] | 4148 | err = -ENOMEM; |
| 4149 | goto err_out_free_res; |
Mike Miller | e143858 | 2009-04-02 12:50:56 -0700 | [diff] [blame] | 4150 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4151 | err = cciss_wait_for_board_ready(h); |
Stephen M. Cameron | e99ba13 | 2010-07-19 13:45:15 -0500 | [diff] [blame] | 4152 | if (err) |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4153 | goto err_out_free_res; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4154 | err = cciss_find_cfgtables(h); |
Stephen M. Cameron | 4809d09 | 2010-07-19 13:45:21 -0500 | [diff] [blame] | 4155 | if (err) |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4156 | goto err_out_free_res; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4157 | print_cfg_table(h); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4158 | cciss_find_board_params(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4159 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4160 | if (!CISS_signature_present(h)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4161 | err = -ENODEV; |
| 4162 | goto err_out_free_res; |
| 4163 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4164 | cciss_enable_scsi_prefetch(h); |
| 4165 | cciss_p600_dma_prefetch_quirk(h); |
| 4166 | cciss_put_controller_into_performant_mode(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4167 | return 0; |
| 4168 | |
Linus Torvalds | 5faad62 | 2006-12-13 09:15:34 -0800 | [diff] [blame] | 4169 | err_out_free_res: |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4170 | /* |
| 4171 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4172 | * Smart Array controllers that pci_enable_device does not undo |
| 4173 | */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4174 | if (h->transtable) |
| 4175 | iounmap(h->transtable); |
| 4176 | if (h->cfgtable) |
| 4177 | iounmap(h->cfgtable); |
| 4178 | if (h->vaddr) |
| 4179 | iounmap(h->vaddr); |
| 4180 | pci_release_regions(h->pdev); |
Bjorn Helgaas | c33ac89 | 2006-06-25 05:49:01 -0700 | [diff] [blame] | 4181 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4182 | } |
| 4183 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4184 | /* Function to find the first free pointer into our hba[] array |
| 4185 | * Returns -1 if no free entries are left. |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4186 | */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4187 | static int alloc_cciss_hba(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4188 | { |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4189 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4190 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4191 | for (i = 0; i < MAX_CTLR; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4192 | if (!hba[i]) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4193 | ctlr_info_t *h; |
Jesper Juhl | f2912a1 | 2007-07-31 00:39:39 -0700 | [diff] [blame] | 4194 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4195 | h = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); |
| 4196 | if (!h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4197 | goto Enomem; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4198 | hba[i] = h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4199 | return i; |
| 4200 | } |
| 4201 | } |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4202 | dev_warn(&pdev->dev, "This driver supports a maximum" |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4203 | " of %d controllers.\n", MAX_CTLR); |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4204 | return -1; |
| 4205 | Enomem: |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4206 | dev_warn(&pdev->dev, "out of memory.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4207 | return -1; |
| 4208 | } |
| 4209 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4210 | static void free_hba(ctlr_info_t *h) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4211 | { |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 4212 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4213 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4214 | hba[h->ctlr] = NULL; |
Stephen M. Cameron | 2c93559 | 2009-09-17 13:47:50 -0500 | [diff] [blame] | 4215 | for (i = 0; i < h->highest_lun + 1; i++) |
| 4216 | if (h->gendisk[i] != NULL) |
| 4217 | put_disk(h->gendisk[i]); |
| 4218 | kfree(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4219 | } |
| 4220 | |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4221 | /* Send a message CDB to the firmware. */ |
| 4222 | static __devinit int cciss_message(struct pci_dev *pdev, unsigned char opcode, unsigned char type) |
| 4223 | { |
| 4224 | typedef struct { |
| 4225 | CommandListHeader_struct CommandHeader; |
| 4226 | RequestBlock_struct Request; |
| 4227 | ErrDescriptor_struct ErrorDescriptor; |
| 4228 | } Command; |
| 4229 | static const size_t cmd_sz = sizeof(Command) + sizeof(ErrorInfo_struct); |
| 4230 | Command *cmd; |
| 4231 | dma_addr_t paddr64; |
| 4232 | uint32_t paddr32, tag; |
| 4233 | void __iomem *vaddr; |
| 4234 | int i, err; |
| 4235 | |
| 4236 | vaddr = ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); |
| 4237 | if (vaddr == NULL) |
| 4238 | return -ENOMEM; |
| 4239 | |
| 4240 | /* The Inbound Post Queue only accepts 32-bit physical addresses for the |
| 4241 | CCISS commands, so they must be allocated from the lower 4GiB of |
| 4242 | memory. */ |
Yang Hongyang | e930438 | 2009-04-13 14:40:14 -0700 | [diff] [blame] | 4243 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4244 | if (err) { |
| 4245 | iounmap(vaddr); |
| 4246 | return -ENOMEM; |
| 4247 | } |
| 4248 | |
| 4249 | cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64); |
| 4250 | if (cmd == NULL) { |
| 4251 | iounmap(vaddr); |
| 4252 | return -ENOMEM; |
| 4253 | } |
| 4254 | |
| 4255 | /* This must fit, because of the 32-bit consistent DMA mask. Also, |
| 4256 | although there's no guarantee, we assume that the address is at |
| 4257 | least 4-byte aligned (most likely, it's page-aligned). */ |
| 4258 | paddr32 = paddr64; |
| 4259 | |
| 4260 | cmd->CommandHeader.ReplyQueue = 0; |
| 4261 | cmd->CommandHeader.SGList = 0; |
| 4262 | cmd->CommandHeader.SGTotal = 0; |
| 4263 | cmd->CommandHeader.Tag.lower = paddr32; |
| 4264 | cmd->CommandHeader.Tag.upper = 0; |
| 4265 | memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8); |
| 4266 | |
| 4267 | cmd->Request.CDBLen = 16; |
| 4268 | cmd->Request.Type.Type = TYPE_MSG; |
| 4269 | cmd->Request.Type.Attribute = ATTR_HEADOFQUEUE; |
| 4270 | cmd->Request.Type.Direction = XFER_NONE; |
| 4271 | cmd->Request.Timeout = 0; /* Don't time out */ |
| 4272 | cmd->Request.CDB[0] = opcode; |
| 4273 | cmd->Request.CDB[1] = type; |
| 4274 | memset(&cmd->Request.CDB[2], 0, 14); /* the rest of the CDB is reserved */ |
| 4275 | |
| 4276 | cmd->ErrorDescriptor.Addr.lower = paddr32 + sizeof(Command); |
| 4277 | cmd->ErrorDescriptor.Addr.upper = 0; |
| 4278 | cmd->ErrorDescriptor.Len = sizeof(ErrorInfo_struct); |
| 4279 | |
| 4280 | writel(paddr32, vaddr + SA5_REQUEST_PORT_OFFSET); |
| 4281 | |
| 4282 | for (i = 0; i < 10; i++) { |
| 4283 | tag = readl(vaddr + SA5_REPLY_PORT_OFFSET); |
| 4284 | if ((tag & ~3) == paddr32) |
| 4285 | break; |
| 4286 | schedule_timeout_uninterruptible(HZ); |
| 4287 | } |
| 4288 | |
| 4289 | iounmap(vaddr); |
| 4290 | |
| 4291 | /* we leak the DMA buffer here ... no choice since the controller could |
| 4292 | still complete the command. */ |
| 4293 | if (i == 10) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4294 | dev_err(&pdev->dev, |
| 4295 | "controller message %02x:%02x timed out\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4296 | opcode, type); |
| 4297 | return -ETIMEDOUT; |
| 4298 | } |
| 4299 | |
| 4300 | pci_free_consistent(pdev, cmd_sz, cmd, paddr64); |
| 4301 | |
| 4302 | if (tag & 2) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4303 | dev_err(&pdev->dev, "controller message %02x:%02x failed\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4304 | opcode, type); |
| 4305 | return -EIO; |
| 4306 | } |
| 4307 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4308 | dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n", |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4309 | opcode, type); |
| 4310 | return 0; |
| 4311 | } |
| 4312 | |
| 4313 | #define cciss_soft_reset_controller(p) cciss_message(p, 1, 0) |
| 4314 | #define cciss_noop(p) cciss_message(p, 3, 0) |
| 4315 | |
| 4316 | static __devinit int cciss_reset_msi(struct pci_dev *pdev) |
| 4317 | { |
| 4318 | /* the #defines are stolen from drivers/pci/msi.h. */ |
| 4319 | #define msi_control_reg(base) (base + PCI_MSI_FLAGS) |
| 4320 | #define PCI_MSIX_FLAGS_ENABLE (1 << 15) |
| 4321 | |
| 4322 | int pos; |
| 4323 | u16 control = 0; |
| 4324 | |
| 4325 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); |
| 4326 | if (pos) { |
| 4327 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4328 | if (control & PCI_MSI_FLAGS_ENABLE) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4329 | dev_info(&pdev->dev, "resetting MSI\n"); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4330 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSI_FLAGS_ENABLE); |
| 4331 | } |
| 4332 | } |
| 4333 | |
| 4334 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); |
| 4335 | if (pos) { |
| 4336 | pci_read_config_word(pdev, msi_control_reg(pos), &control); |
| 4337 | if (control & PCI_MSIX_FLAGS_ENABLE) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4338 | dev_info(&pdev->dev, "resetting MSI-X\n"); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4339 | pci_write_config_word(pdev, msi_control_reg(pos), control & ~PCI_MSIX_FLAGS_ENABLE); |
| 4340 | } |
| 4341 | } |
| 4342 | |
| 4343 | return 0; |
| 4344 | } |
| 4345 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4346 | static int cciss_controller_hard_reset(struct pci_dev *pdev, |
| 4347 | void * __iomem vaddr, bool use_doorbell) |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4348 | { |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4349 | u16 pmcsr; |
| 4350 | int pos; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4351 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4352 | if (use_doorbell) { |
| 4353 | /* For everything after the P600, the PCI power state method |
| 4354 | * of resetting the controller doesn't work, so we have this |
| 4355 | * other way using the doorbell register. |
| 4356 | */ |
| 4357 | dev_info(&pdev->dev, "using doorbell to reset controller\n"); |
| 4358 | writel(DOORBELL_CTLR_RESET, vaddr + SA5_DOORBELL); |
| 4359 | msleep(1000); |
| 4360 | } else { /* Try to do it the PCI power state way */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4361 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4362 | /* Quoting from the Open CISS Specification: "The Power |
| 4363 | * Management Control/Status Register (CSR) controls the power |
| 4364 | * state of the device. The normal operating state is D0, |
| 4365 | * CSR=00h. The software off state is D3, CSR=03h. To reset |
| 4366 | * the controller, place the interface device in D3 then to D0, |
| 4367 | * this causes a secondary PCI reset which will reset the |
| 4368 | * controller." */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4369 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4370 | pos = pci_find_capability(pdev, PCI_CAP_ID_PM); |
| 4371 | if (pos == 0) { |
| 4372 | dev_err(&pdev->dev, |
| 4373 | "cciss_controller_hard_reset: " |
| 4374 | "PCI PM not supported\n"); |
| 4375 | return -ENODEV; |
| 4376 | } |
| 4377 | dev_info(&pdev->dev, "using PCI PM to reset controller\n"); |
| 4378 | /* enter the D3hot power management state */ |
| 4379 | pci_read_config_word(pdev, pos + PCI_PM_CTRL, &pmcsr); |
| 4380 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4381 | pmcsr |= PCI_D3hot; |
| 4382 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4383 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4384 | msleep(500); |
| 4385 | |
| 4386 | /* enter the D0 power management state */ |
| 4387 | pmcsr &= ~PCI_PM_CTRL_STATE_MASK; |
| 4388 | pmcsr |= PCI_D0; |
| 4389 | pci_write_config_word(pdev, pos + PCI_PM_CTRL, pmcsr); |
| 4390 | |
| 4391 | msleep(500); |
| 4392 | } |
| 4393 | return 0; |
| 4394 | } |
| 4395 | |
| 4396 | /* This does a hard reset of the controller using PCI power management |
| 4397 | * states or using the doorbell register. */ |
| 4398 | static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev) |
| 4399 | { |
| 4400 | u16 saved_config_space[32]; |
| 4401 | u64 cfg_offset; |
| 4402 | u32 cfg_base_addr; |
| 4403 | u64 cfg_base_addr_index; |
| 4404 | void __iomem *vaddr; |
| 4405 | unsigned long paddr; |
| 4406 | u32 misc_fw_support, active_transport; |
| 4407 | int rc, i; |
| 4408 | CfgTable_struct __iomem *cfgtable; |
| 4409 | bool use_doorbell; |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4410 | u32 board_id; |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4411 | |
| 4412 | /* For controllers as old a the p600, this is very nearly |
| 4413 | * the same thing as |
| 4414 | * |
| 4415 | * pci_save_state(pci_dev); |
| 4416 | * pci_set_power_state(pci_dev, PCI_D3hot); |
| 4417 | * pci_set_power_state(pci_dev, PCI_D0); |
| 4418 | * pci_restore_state(pci_dev); |
| 4419 | * |
| 4420 | * but we can't use these nice canned kernel routines on |
| 4421 | * kexec, because they also check the MSI/MSI-X state in PCI |
| 4422 | * configuration space and do the wrong thing when it is |
| 4423 | * set/cleared. Also, the pci_save/restore_state functions |
| 4424 | * violate the ordering requirements for restoring the |
| 4425 | * configuration space from the CCISS document (see the |
| 4426 | * comment below). So we roll our own .... |
| 4427 | * |
| 4428 | * For controllers newer than the P600, the pci power state |
| 4429 | * method of resetting doesn't work so we have another way |
| 4430 | * using the doorbell register. |
| 4431 | */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4432 | |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4433 | /* Exclude 640x boards. These are two pci devices in one slot |
| 4434 | * which share a battery backed cache module. One controls the |
| 4435 | * cache, the other accesses the cache through the one that controls |
| 4436 | * it. If we reset the one controlling the cache, the other will |
| 4437 | * likely not be happy. Just forbid resetting this conjoined mess. |
| 4438 | */ |
| 4439 | cciss_lookup_board_id(pdev, &board_id); |
| 4440 | if (board_id == 0x409C0E11 || board_id == 0x409D0E11) { |
| 4441 | dev_warn(&pdev->dev, "Cannot reset Smart Array 640x " |
| 4442 | "due to shared cache module."); |
| 4443 | return -ENODEV; |
| 4444 | } |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4445 | |
| 4446 | for (i = 0; i < 32; i++) |
| 4447 | pci_read_config_word(pdev, 2*i, &saved_config_space[i]); |
| 4448 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4449 | /* find the first memory BAR, so we can find the cfg table */ |
| 4450 | rc = cciss_pci_find_memory_BAR(pdev, &paddr); |
| 4451 | if (rc) |
| 4452 | return rc; |
| 4453 | vaddr = remap_pci_mem(paddr, 0x250); |
| 4454 | if (!vaddr) |
| 4455 | return -ENOMEM; |
| 4456 | |
| 4457 | /* find cfgtable in order to check if reset via doorbell is supported */ |
| 4458 | rc = cciss_find_cfg_addrs(pdev, vaddr, &cfg_base_addr, |
| 4459 | &cfg_base_addr_index, &cfg_offset); |
| 4460 | if (rc) |
| 4461 | goto unmap_vaddr; |
| 4462 | cfgtable = remap_pci_mem(pci_resource_start(pdev, |
| 4463 | cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable)); |
| 4464 | if (!cfgtable) { |
| 4465 | rc = -ENOMEM; |
| 4466 | goto unmap_vaddr; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4467 | } |
| 4468 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4469 | /* If reset via doorbell register is supported, use that. */ |
| 4470 | misc_fw_support = readl(&cfgtable->misc_fw_support); |
| 4471 | use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4472 | |
Stephen M. Cameron | 75230ff | 2010-08-23 11:02:17 +0200 | [diff] [blame] | 4473 | /* The doorbell reset seems to cause lockups on some Smart |
| 4474 | * Arrays (e.g. P410, P410i, maybe others). Until this is |
| 4475 | * fixed or at least isolated, avoid the doorbell reset. |
| 4476 | */ |
| 4477 | use_doorbell = 0; |
| 4478 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4479 | rc = cciss_controller_hard_reset(pdev, vaddr, use_doorbell); |
| 4480 | if (rc) |
| 4481 | goto unmap_cfgtable; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4482 | |
| 4483 | /* Restore the PCI configuration space. The Open CISS |
| 4484 | * Specification says, "Restore the PCI Configuration |
| 4485 | * Registers, offsets 00h through 60h. It is important to |
| 4486 | * restore the command register, 16-bits at offset 04h, |
| 4487 | * last. Do not restore the configuration status register, |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4488 | * 16-bits at offset 06h." Note that the offset is 2*i. |
| 4489 | */ |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4490 | for (i = 0; i < 32; i++) { |
| 4491 | if (i == 2 || i == 3) |
| 4492 | continue; |
| 4493 | pci_write_config_word(pdev, 2*i, saved_config_space[i]); |
| 4494 | } |
| 4495 | wmb(); |
| 4496 | pci_write_config_word(pdev, 4, saved_config_space[2]); |
| 4497 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4498 | /* Some devices (notably the HP Smart Array 5i Controller) |
| 4499 | need a little pause here */ |
| 4500 | msleep(CCISS_POST_RESET_PAUSE_MSECS); |
| 4501 | |
| 4502 | /* Controller should be in simple mode at this point. If it's not, |
| 4503 | * It means we're on one of those controllers which doesn't support |
| 4504 | * the doorbell reset method and on which the PCI power management reset |
| 4505 | * method doesn't work (P800, for example.) |
| 4506 | * In those cases, don't try to proceed, as it generally doesn't work. |
| 4507 | */ |
| 4508 | active_transport = readl(&cfgtable->TransportActive); |
| 4509 | if (active_transport & PERFORMANT_MODE) { |
| 4510 | dev_warn(&pdev->dev, "Unable to successfully reset controller," |
| 4511 | " Ignoring controller.\n"); |
| 4512 | rc = -ENODEV; |
| 4513 | } |
| 4514 | |
| 4515 | unmap_cfgtable: |
| 4516 | iounmap(cfgtable); |
| 4517 | |
| 4518 | unmap_vaddr: |
| 4519 | iounmap(vaddr); |
| 4520 | return rc; |
Chip Coldwell | 82eb03c | 2009-02-16 13:11:56 +0100 | [diff] [blame] | 4521 | } |
| 4522 | |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4523 | static __devinit int cciss_init_reset_devices(struct pci_dev *pdev) |
| 4524 | { |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4525 | int rc, i; |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4526 | |
| 4527 | if (!reset_devices) |
| 4528 | return 0; |
| 4529 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4530 | /* Reset the controller with a PCI power-cycle or via doorbell */ |
| 4531 | rc = cciss_kdump_hard_reset_controller(pdev); |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4532 | |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4533 | /* -ENOTSUPP here means we cannot reset the controller |
| 4534 | * but it's already (and still) up and running in |
Stephen M. Cameron | 058a0f9 | 2010-07-19 13:46:33 -0500 | [diff] [blame] | 4535 | * "performant mode". Or, it might be 640x, which can't reset |
| 4536 | * due to concerns about shared bbwc between 6402/6404 pair. |
Stephen M. Cameron | a6528d0 | 2010-07-19 13:46:22 -0500 | [diff] [blame] | 4537 | */ |
| 4538 | if (rc == -ENOTSUPP) |
| 4539 | return 0; /* just try to do the kdump anyhow. */ |
| 4540 | if (rc) |
| 4541 | return -ENODEV; |
| 4542 | if (cciss_reset_msi(pdev)) |
| 4543 | return -ENODEV; |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4544 | |
| 4545 | /* Now try to get the controller to respond to a no-op */ |
| 4546 | for (i = 0; i < CCISS_POST_RESET_NOOP_RETRIES; i++) { |
| 4547 | if (cciss_noop(pdev) == 0) |
| 4548 | break; |
| 4549 | else |
| 4550 | dev_warn(&pdev->dev, "no-op failed%s\n", |
| 4551 | (i < CCISS_POST_RESET_NOOP_RETRIES - 1 ? |
| 4552 | "; re-trying" : "")); |
| 4553 | msleep(CCISS_POST_RESET_NOOP_INTERVAL_MSECS); |
| 4554 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4555 | return 0; |
| 4556 | } |
| 4557 | |
| 4558 | /* |
| 4559 | * This is it. Find all the controllers and register them. I really hate |
| 4560 | * stealing all these major device numbers. |
| 4561 | * returns the number of block devices registered. |
| 4562 | */ |
| 4563 | static int __devinit cciss_init_one(struct pci_dev *pdev, |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4564 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4565 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4566 | int i; |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4567 | int j = 0; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4568 | int k = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4569 | int rc; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4570 | int dac, return_code; |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4571 | InquiryData_struct *inq_buff; |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4572 | ctlr_info_t *h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4573 | |
Stephen M. Cameron | 83123cb | 2010-07-19 13:46:17 -0500 | [diff] [blame] | 4574 | rc = cciss_init_reset_devices(pdev); |
| 4575 | if (rc) |
| 4576 | return rc; |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4577 | i = alloc_cciss_hba(pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4578 | if (i < 0) |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4579 | return -1; |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4580 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4581 | h = hba[i]; |
| 4582 | h->pdev = pdev; |
| 4583 | h->busy_initializing = 1; |
| 4584 | INIT_HLIST_HEAD(&h->cmpQ); |
| 4585 | INIT_HLIST_HEAD(&h->reqQ); |
| 4586 | mutex_init(&h->busy_shutting_down); |
Mike Miller | 1f8ef38 | 2005-09-13 01:25:21 -0700 | [diff] [blame] | 4587 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4588 | if (cciss_pci_init(h) != 0) |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4589 | goto clean_no_release_regions; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4590 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4591 | sprintf(h->devname, "cciss%d", i); |
| 4592 | h->ctlr = i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4593 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4594 | init_completion(&h->scan_wait); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4595 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4596 | if (cciss_create_hba_sysfs_entry(h)) |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4597 | goto clean0; |
| 4598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4599 | /* configure PCI DMA stuff */ |
Yang Hongyang | 6a35528 | 2009-04-06 19:01:13 -0700 | [diff] [blame] | 4600 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4601 | dac = 1; |
Yang Hongyang | 284901a | 2009-04-06 19:01:15 -0700 | [diff] [blame] | 4602 | else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4603 | dac = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4604 | else { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4605 | dev_err(&h->pdev->dev, "no suitable DMA available\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4606 | goto clean1; |
| 4607 | } |
| 4608 | |
| 4609 | /* |
| 4610 | * register with the major number, or get a dynamic major number |
| 4611 | * by passing 0 as argument. This is done for greater than |
| 4612 | * 8 controller support. |
| 4613 | */ |
| 4614 | if (i < MAX_CTLR_ORIG) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4615 | h->major = COMPAQ_CISS_MAJOR + i; |
| 4616 | rc = register_blkdev(h->major, h->devname); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4617 | if (rc == -EBUSY || rc == -EINVAL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4618 | dev_err(&h->pdev->dev, |
| 4619 | "Unable to get major number %d for %s " |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4620 | "on hba %d\n", h->major, h->devname, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4621 | goto clean1; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4622 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4623 | if (i >= MAX_CTLR_ORIG) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4624 | h->major = rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4625 | } |
| 4626 | |
| 4627 | /* make sure the board interrupts are off */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4628 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
| 4629 | if (h->msi_vector || h->msix_vector) { |
| 4630 | if (request_irq(h->intr[PERF_MODE_INT], |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 4631 | do_cciss_msix_intr, |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4632 | IRQF_DISABLED, h->devname, h)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4633 | dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n", |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4634 | h->intr[PERF_MODE_INT], h->devname); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 4635 | goto clean2; |
| 4636 | } |
| 4637 | } else { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4638 | if (request_irq(h->intr[PERF_MODE_INT], do_cciss_intx, |
| 4639 | IRQF_DISABLED, h->devname, h)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4640 | dev_err(&h->pdev->dev, "Unable to get irq %d for %s\n", |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4641 | h->intr[PERF_MODE_INT], h->devname); |
Mike Miller | 0c2b390 | 2010-06-02 12:58:00 -0700 | [diff] [blame] | 4642 | goto clean2; |
| 4643 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4644 | } |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4645 | |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4646 | dev_info(&h->pdev->dev, "%s: <0x%x> at PCI %s IRQ %d%s using DAC\n", |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4647 | h->devname, pdev->device, pci_name(pdev), |
| 4648 | h->intr[PERF_MODE_INT], dac ? "" : " not"); |
Bjorn Helgaas | 40aabb5 | 2006-06-25 05:49:03 -0700 | [diff] [blame] | 4649 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4650 | h->cmd_pool_bits = |
| 4651 | kmalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4652 | * sizeof(unsigned long), GFP_KERNEL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4653 | h->cmd_pool = (CommandList_struct *) |
| 4654 | pci_alloc_consistent(h->pdev, |
| 4655 | h->nr_cmds * sizeof(CommandList_struct), |
| 4656 | &(h->cmd_pool_dhandle)); |
| 4657 | h->errinfo_pool = (ErrorInfo_struct *) |
| 4658 | pci_alloc_consistent(h->pdev, |
| 4659 | h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4660 | &(h->errinfo_pool_dhandle)); |
| 4661 | if ((h->cmd_pool_bits == NULL) |
| 4662 | || (h->cmd_pool == NULL) |
| 4663 | || (h->errinfo_pool == NULL)) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4664 | dev_err(&h->pdev->dev, "out of memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4665 | goto clean4; |
| 4666 | } |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4667 | |
| 4668 | /* Need space for temp scatter list */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4669 | h->scatter_list = kmalloc(h->max_commands * |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4670 | sizeof(struct scatterlist *), |
| 4671 | GFP_KERNEL); |
Dan Carpenter | 4ee69851 | 2010-08-23 12:28:15 +0200 | [diff] [blame] | 4672 | if (!h->scatter_list) |
| 4673 | goto clean4; |
| 4674 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4675 | for (k = 0; k < h->nr_cmds; k++) { |
| 4676 | h->scatter_list[k] = kmalloc(sizeof(struct scatterlist) * |
| 4677 | h->maxsgentries, |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4678 | GFP_KERNEL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4679 | if (h->scatter_list[k] == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4680 | dev_err(&h->pdev->dev, |
| 4681 | "could not allocate s/g lists\n"); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4682 | goto clean4; |
| 4683 | } |
| 4684 | } |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4685 | h->cmd_sg_list = cciss_allocate_sg_chain_blocks(h, |
| 4686 | h->chainsize, h->nr_cmds); |
| 4687 | if (!h->cmd_sg_list && h->chainsize > 0) |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4688 | goto clean4; |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4689 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4690 | spin_lock_init(&h->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4691 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4692 | /* Initialize the pdev driver private data. |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4693 | have it point to h. */ |
| 4694 | pci_set_drvdata(pdev, h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4695 | /* command and error info recs zeroed out before |
| 4696 | they are used */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4697 | memset(h->cmd_pool_bits, 0, |
| 4698 | DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) |
Julia Lawall | 061837b | 2008-09-22 14:57:16 -0700 | [diff] [blame] | 4699 | * sizeof(unsigned long)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4700 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4701 | h->num_luns = 0; |
| 4702 | h->highest_lun = -1; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4703 | for (j = 0; j < CISS_MAX_LUN; j++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4704 | h->drv[j] = NULL; |
| 4705 | h->gendisk[j] = NULL; |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4706 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4707 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4708 | cciss_scsi_setup(h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4709 | |
| 4710 | /* Turn the interrupts on so we can service requests */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4711 | h->access.set_intr_mask(h, CCISS_INTR_ON); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4712 | |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4713 | /* Get the firmware version */ |
| 4714 | inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); |
| 4715 | if (inq_buff == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4716 | dev_err(&h->pdev->dev, "out of memory\n"); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4717 | goto clean4; |
| 4718 | } |
| 4719 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4720 | return_code = sendcmd_withirq(h, CISS_INQUIRY, inq_buff, |
scameron@beardog.cca.cpqcorp.net | b57695f | 2009-06-08 16:02:17 -0500 | [diff] [blame] | 4721 | sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4722 | if (return_code == IO_OK) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4723 | h->firm_ver[0] = inq_buff->data_byte[32]; |
| 4724 | h->firm_ver[1] = inq_buff->data_byte[33]; |
| 4725 | h->firm_ver[2] = inq_buff->data_byte[34]; |
| 4726 | h->firm_ver[3] = inq_buff->data_byte[35]; |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4727 | } else { /* send command failed */ |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4728 | dev_warn(&h->pdev->dev, "unable to determine firmware" |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4729 | " version of controller\n"); |
| 4730 | } |
Eric Dumazet | 212a502 | 2009-08-24 10:01:53 +0200 | [diff] [blame] | 4731 | kfree(inq_buff); |
Mike Miller | 22bece0 | 2008-11-06 12:53:25 -0800 | [diff] [blame] | 4732 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4733 | cciss_procinit(h); |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 4734 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4735 | h->cciss_max_sectors = 8192; |
Mike Miller | 92c4231a | 2006-12-06 20:35:06 -0800 | [diff] [blame] | 4736 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4737 | rebuild_lun_table(h, 1, 0); |
| 4738 | h->busy_initializing = 0; |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4739 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4740 | |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4741 | clean4: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4742 | kfree(h->cmd_pool_bits); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4743 | /* Free up sg elements */ |
Dan Carpenter | b0722cb | 2010-09-13 14:09:33 +0200 | [diff] [blame] | 4744 | for (k-- ; k >= 0; k--) |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4745 | kfree(h->scatter_list[k]); |
| 4746 | kfree(h->scatter_list); |
| 4747 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
| 4748 | if (h->cmd_pool) |
| 4749 | pci_free_consistent(h->pdev, |
| 4750 | h->nr_cmds * sizeof(CommandList_struct), |
| 4751 | h->cmd_pool, h->cmd_pool_dhandle); |
| 4752 | if (h->errinfo_pool) |
| 4753 | pci_free_consistent(h->pdev, |
| 4754 | h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4755 | h->errinfo_pool, |
| 4756 | h->errinfo_pool_dhandle); |
| 4757 | free_irq(h->intr[PERF_MODE_INT], h); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4758 | clean2: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4759 | unregister_blkdev(h->major, h->devname); |
Mike Miller | 6ae5ce8 | 2008-08-04 11:54:52 +0200 | [diff] [blame] | 4760 | clean1: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4761 | cciss_destroy_hba_sysfs_entry(h); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4762 | clean0: |
Stephen M. Cameron | 2cfa948 | 2009-10-13 09:18:22 +0200 | [diff] [blame] | 4763 | pci_release_regions(pdev); |
| 4764 | clean_no_release_regions: |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4765 | h->busy_initializing = 0; |
Stephen M. Cameron | 9cef0d2 | 2009-09-17 13:48:31 -0500 | [diff] [blame] | 4766 | |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4767 | /* |
| 4768 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4769 | * Smart Array controllers that pci_enable_device does not undo |
| 4770 | */ |
Mike Miller | 799202c | 2006-12-06 20:35:12 -0800 | [diff] [blame] | 4771 | pci_set_drvdata(pdev, NULL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4772 | free_hba(h); |
Bjorn Helgaas | e2019b5 | 2006-06-25 05:49:05 -0700 | [diff] [blame] | 4773 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4774 | } |
| 4775 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4776 | static void cciss_shutdown(struct pci_dev *pdev) |
| 4777 | { |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4778 | ctlr_info_t *h; |
| 4779 | char *flush_buf; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4780 | int return_code; |
| 4781 | |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4782 | h = pci_get_drvdata(pdev); |
| 4783 | flush_buf = kzalloc(4, GFP_KERNEL); |
| 4784 | if (!flush_buf) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4785 | dev_warn(&h->pdev->dev, "cache not flushed, out of memory.\n"); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4786 | return; |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4787 | } |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4788 | /* write all data in the battery backed cache to disk */ |
| 4789 | memset(flush_buf, 0, 4); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4790 | return_code = sendcmd_withirq(h, CCISS_CACHE_FLUSH, flush_buf, |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4791 | 4, 0, CTLR_LUNID, TYPE_CMD); |
| 4792 | kfree(flush_buf); |
| 4793 | if (return_code != IO_OK) |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4794 | dev_warn(&h->pdev->dev, "Error flushing cache\n"); |
Stephen M. Cameron | 29009a0 | 2009-11-12 12:49:35 -0600 | [diff] [blame] | 4795 | h->access.set_intr_mask(h, CCISS_INTR_OFF); |
Mike Miller | 5e21615 | 2010-06-02 12:58:06 -0700 | [diff] [blame] | 4796 | free_irq(h->intr[PERF_MODE_INT], h); |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4797 | } |
| 4798 | |
| 4799 | static void __devexit cciss_remove_one(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4800 | { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4801 | ctlr_info_t *h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4802 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4803 | |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4804 | if (pci_get_drvdata(pdev) == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4805 | dev_err(&pdev->dev, "Unable to remove device\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4806 | return; |
| 4807 | } |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4808 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4809 | h = pci_get_drvdata(pdev); |
| 4810 | i = h->ctlr; |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4811 | if (hba[i] == NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4812 | dev_err(&pdev->dev, "device appears to already be removed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4813 | return; |
| 4814 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4815 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4816 | mutex_lock(&h->busy_shutting_down); |
Mike Miller | 0a9279c | 2009-04-02 12:50:55 -0700 | [diff] [blame] | 4817 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4818 | remove_from_scan_list(h); |
| 4819 | remove_proc_entry(h->devname, proc_cciss); |
| 4820 | unregister_blkdev(h->major, h->devname); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4821 | |
| 4822 | /* remove it from the disk list */ |
| 4823 | for (j = 0; j < CISS_MAX_LUN; j++) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4824 | struct gendisk *disk = h->gendisk[j]; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4825 | if (disk) { |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 4826 | struct request_queue *q = disk->queue; |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4827 | |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4828 | if (disk->flags & GENHD_FL_UP) { |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4829 | cciss_destroy_ld_sysfs_entry(h, j, 1); |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4830 | del_gendisk(disk); |
Stephen M. Cameron | 097d026 | 2009-09-17 13:47:19 -0500 | [diff] [blame] | 4831 | } |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4832 | if (q) |
| 4833 | blk_cleanup_queue(q); |
| 4834 | } |
| 4835 | } |
| 4836 | |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4837 | #ifdef CONFIG_CISS_SCSI_TAPE |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4838 | cciss_unregister_scsi(h); /* unhook from SCSI subsystem */ |
Mike Miller | ba198ef | 2008-08-04 11:54:55 +0200 | [diff] [blame] | 4839 | #endif |
Bjorn Helgaas | b655077 | 2007-04-11 23:28:43 -0700 | [diff] [blame] | 4840 | |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4841 | cciss_shutdown(pdev); |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4842 | |
| 4843 | #ifdef CONFIG_PCI_MSI |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4844 | if (h->msix_vector) |
| 4845 | pci_disable_msix(h->pdev); |
| 4846 | else if (h->msi_vector) |
| 4847 | pci_disable_msi(h->pdev); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4848 | #endif /* CONFIG_PCI_MSI */ |
Mike Miller | fb86a35 | 2006-01-08 01:03:50 -0800 | [diff] [blame] | 4849 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4850 | iounmap(h->transtable); |
| 4851 | iounmap(h->cfgtable); |
| 4852 | iounmap(h->vaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4853 | |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4854 | pci_free_consistent(h->pdev, h->nr_cmds * sizeof(CommandList_struct), |
| 4855 | h->cmd_pool, h->cmd_pool_dhandle); |
| 4856 | pci_free_consistent(h->pdev, h->nr_cmds * sizeof(ErrorInfo_struct), |
| 4857 | h->errinfo_pool, h->errinfo_pool_dhandle); |
| 4858 | kfree(h->cmd_pool_bits); |
Don Brace | 5c07a31 | 2009-11-12 12:50:01 -0600 | [diff] [blame] | 4859 | /* Free up sg elements */ |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4860 | for (j = 0; j < h->nr_cmds; j++) |
| 4861 | kfree(h->scatter_list[j]); |
| 4862 | kfree(h->scatter_list); |
| 4863 | cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds); |
Mike Miller | 872225c | 2006-12-13 00:34:22 -0800 | [diff] [blame] | 4864 | /* |
| 4865 | * Deliberately omit pci_disable_device(): it does something nasty to |
| 4866 | * Smart Array controllers that pci_enable_device does not undo |
| 4867 | */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4868 | pci_release_regions(pdev); |
Bjorn Helgaas | 4e57030 | 2006-06-25 05:49:02 -0700 | [diff] [blame] | 4869 | pci_set_drvdata(pdev, NULL); |
Stephen M. Cameron | f70dba8 | 2010-07-19 13:46:38 -0500 | [diff] [blame] | 4870 | cciss_destroy_hba_sysfs_entry(h); |
| 4871 | mutex_unlock(&h->busy_shutting_down); |
| 4872 | free_hba(h); |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4873 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4874 | |
| 4875 | static struct pci_driver cciss_pci_driver = { |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4876 | .name = "cciss", |
| 4877 | .probe = cciss_init_one, |
| 4878 | .remove = __devexit_p(cciss_remove_one), |
| 4879 | .id_table = cciss_pci_device_id, /* id_table */ |
Gerald Britton | e9ca75b | 2007-05-14 13:53:01 -0400 | [diff] [blame] | 4880 | .shutdown = cciss_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4881 | }; |
| 4882 | |
| 4883 | /* |
| 4884 | * 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] | 4885 | * 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] | 4886 | */ |
| 4887 | static int __init cciss_init(void) |
| 4888 | { |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4889 | int err; |
| 4890 | |
Jens Axboe | 10cbda9 | 2009-02-27 20:14:20 +0100 | [diff] [blame] | 4891 | /* |
| 4892 | * The hardware requires that commands are aligned on a 64-bit |
| 4893 | * boundary. Given that we use pci_alloc_consistent() to allocate an |
| 4894 | * array of them, the size must be a multiple of 8 bytes. |
| 4895 | */ |
Stephen M. Cameron | 1b7d0d2 | 2010-02-26 16:01:17 -0600 | [diff] [blame] | 4896 | BUILD_BUG_ON(sizeof(CommandList_struct) % COMMANDLIST_ALIGNMENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4897 | printk(KERN_INFO DRIVER_NAME "\n"); |
| 4898 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4899 | err = bus_register(&cciss_bus_type); |
| 4900 | if (err) |
| 4901 | return err; |
| 4902 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4903 | /* Start the scan thread */ |
| 4904 | cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan"); |
| 4905 | if (IS_ERR(cciss_scan_thread)) { |
| 4906 | err = PTR_ERR(cciss_scan_thread); |
| 4907 | goto err_bus_unregister; |
| 4908 | } |
| 4909 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4910 | /* Register for our PCI devices */ |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4911 | err = pci_register_driver(&cciss_pci_driver); |
| 4912 | if (err) |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4913 | goto err_thread_stop; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4914 | |
Stephen M. Cameron | 617e134 | 2009-09-17 13:47:14 -0500 | [diff] [blame] | 4915 | return err; |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4916 | |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4917 | err_thread_stop: |
| 4918 | kthread_stop(cciss_scan_thread); |
| 4919 | err_bus_unregister: |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4920 | bus_unregister(&cciss_bus_type); |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4921 | |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4922 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4923 | } |
| 4924 | |
| 4925 | static void __exit cciss_cleanup(void) |
| 4926 | { |
| 4927 | int i; |
| 4928 | |
| 4929 | pci_unregister_driver(&cciss_pci_driver); |
| 4930 | /* double check that all controller entrys have been removed */ |
Bjorn Helgaas | 7c83283 | 2006-06-25 05:49:06 -0700 | [diff] [blame] | 4931 | for (i = 0; i < MAX_CTLR; i++) { |
| 4932 | if (hba[i] != NULL) { |
Stephen M. Cameron | b2a4a43 | 2010-07-19 13:46:48 -0500 | [diff] [blame] | 4933 | dev_warn(&hba[i]->pdev->dev, |
| 4934 | "had to remove controller\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4935 | cciss_remove_one(hba[i]->pdev); |
| 4936 | } |
| 4937 | } |
Andrew Patterson | b368c9d | 2009-09-17 13:46:58 -0500 | [diff] [blame] | 4938 | kthread_stop(cciss_scan_thread); |
Jens Axboe | 90fdb0b | 2010-11-08 14:29:13 +0100 | [diff] [blame^] | 4939 | if (proc_cciss) |
| 4940 | remove_proc_entry("driver/cciss", NULL); |
Andrew Patterson | 7fe0632 | 2009-06-02 14:48:39 +0200 | [diff] [blame] | 4941 | bus_unregister(&cciss_bus_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4942 | } |
| 4943 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4944 | module_init(cciss_init); |
| 4945 | module_exit(cciss_cleanup); |