Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1 | /* |
| 2 | * SBP2 driver (SCSI over IEEE1394) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 3 | * |
Kristian Høgsberg | 27a15e5 | 2007-02-06 14:49:39 -0500 | [diff] [blame] | 4 | * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software Foundation, |
| 18 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 21 | /* |
| 22 | * The basic structure of this driver is based on the old storage driver, |
Kristian Høgsberg | 27a15e5 | 2007-02-06 14:49:39 -0500 | [diff] [blame] | 23 | * drivers/ieee1394/sbp2.c, originally written by |
| 24 | * James Goodwin <jamesg@filanet.com> |
| 25 | * with later contributions and ongoing maintenance from |
| 26 | * Ben Collins <bcollins@debian.org>, |
| 27 | * Stefan Richter <stefanr@s5r6.in-berlin.de> |
| 28 | * and many others. |
| 29 | */ |
| 30 | |
Stefan Richter | 7bb6bf7 | 2008-02-03 23:12:17 +0100 | [diff] [blame] | 31 | #include <linux/blkdev.h> |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 32 | #include <linux/bug.h> |
Stefan Richter | e8ca970 | 2009-06-04 21:09:38 +0200 | [diff] [blame] | 33 | #include <linux/completion.h> |
Stefan Richter | 9220f19 | 2008-02-03 23:04:38 +0100 | [diff] [blame] | 34 | #include <linux/delay.h> |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 35 | #include <linux/device.h> |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 36 | #include <linux/dma-mapping.h> |
Stefan Richter | 77c9a5d | 2009-06-05 16:26:18 +0200 | [diff] [blame] | 37 | #include <linux/firewire.h> |
Stefan Richter | e8ca970 | 2009-06-04 21:09:38 +0200 | [diff] [blame] | 38 | #include <linux/firewire-constants.h> |
| 39 | #include <linux/init.h> |
| 40 | #include <linux/jiffies.h> |
Stefan Richter | 7bb6bf7 | 2008-02-03 23:12:17 +0100 | [diff] [blame] | 41 | #include <linux/kernel.h> |
Stefan Richter | e8ca970 | 2009-06-04 21:09:38 +0200 | [diff] [blame] | 42 | #include <linux/kref.h> |
| 43 | #include <linux/list.h> |
Stefan Richter | 7bb6bf7 | 2008-02-03 23:12:17 +0100 | [diff] [blame] | 44 | #include <linux/mod_devicetable.h> |
| 45 | #include <linux/module.h> |
| 46 | #include <linux/moduleparam.h> |
| 47 | #include <linux/scatterlist.h> |
Stefan Richter | e8ca970 | 2009-06-04 21:09:38 +0200 | [diff] [blame] | 48 | #include <linux/slab.h> |
| 49 | #include <linux/spinlock.h> |
Stefan Richter | e7cdf23 | 2007-07-01 13:54:57 +0200 | [diff] [blame] | 50 | #include <linux/string.h> |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 51 | #include <linux/stringify.h> |
Stefan Richter | df8ec24 | 2007-08-12 12:51:18 +0200 | [diff] [blame] | 52 | #include <linux/workqueue.h> |
Stefan Richter | e8ca970 | 2009-06-04 21:09:38 +0200 | [diff] [blame] | 53 | |
| 54 | #include <asm/byteorder.h> |
Stefan Richter | b5d2a5e | 2008-01-25 18:57:41 +0100 | [diff] [blame] | 55 | #include <asm/system.h> |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 56 | |
| 57 | #include <scsi/scsi.h> |
| 58 | #include <scsi/scsi_cmnd.h> |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 59 | #include <scsi/scsi_device.h> |
| 60 | #include <scsi/scsi_host.h> |
| 61 | |
Stefan Richter | 5cd54c9 | 2007-06-17 23:55:41 +0200 | [diff] [blame] | 62 | /* |
| 63 | * So far only bridges from Oxford Semiconductor are known to support |
| 64 | * concurrent logins. Depending on firmware, four or two concurrent logins |
| 65 | * are possible on OXFW911 and newer Oxsemi bridges. |
| 66 | * |
| 67 | * Concurrent logins are useful together with cluster filesystems. |
| 68 | */ |
| 69 | static int sbp2_param_exclusive_login = 1; |
| 70 | module_param_named(exclusive_login, sbp2_param_exclusive_login, bool, 0644); |
| 71 | MODULE_PARM_DESC(exclusive_login, "Exclusive login to sbp2 device " |
| 72 | "(default = Y, use N for concurrent initiators)"); |
| 73 | |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 74 | /* |
| 75 | * Flags for firmware oddities |
| 76 | * |
| 77 | * - 128kB max transfer |
| 78 | * Limit transfer size. Necessary for some old bridges. |
| 79 | * |
| 80 | * - 36 byte inquiry |
| 81 | * When scsi_mod probes the device, let the inquiry command look like that |
| 82 | * from MS Windows. |
| 83 | * |
| 84 | * - skip mode page 8 |
| 85 | * Suppress sending of mode_sense for mode page 8 if the device pretends to |
| 86 | * support the SCSI Primary Block commands instead of Reduced Block Commands. |
| 87 | * |
| 88 | * - fix capacity |
| 89 | * Tell sd_mod to correct the last sector number reported by read_capacity. |
| 90 | * Avoids access beyond actual disk limits on devices with an off-by-one bug. |
| 91 | * Don't use this with devices which don't have this bug. |
| 92 | * |
Stefan Richter | 9220f19 | 2008-02-03 23:04:38 +0100 | [diff] [blame] | 93 | * - delay inquiry |
| 94 | * Wait extra SBP2_INQUIRY_DELAY seconds after login before SCSI inquiry. |
| 95 | * |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 96 | * - power condition |
| 97 | * Set the power condition field in the START STOP UNIT commands sent by |
| 98 | * sd_mod on suspend, resume, and shutdown (if manage_start_stop is on). |
| 99 | * Some disks need this to spin down or to resume properly. |
| 100 | * |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 101 | * - override internal blacklist |
| 102 | * Instead of adding to the built-in blacklist, use only the workarounds |
| 103 | * specified in the module load parameter. |
| 104 | * Useful if a blacklist entry interfered with a non-broken device. |
| 105 | */ |
| 106 | #define SBP2_WORKAROUND_128K_MAX_TRANS 0x1 |
| 107 | #define SBP2_WORKAROUND_INQUIRY_36 0x2 |
| 108 | #define SBP2_WORKAROUND_MODE_SENSE_8 0x4 |
| 109 | #define SBP2_WORKAROUND_FIX_CAPACITY 0x8 |
Stefan Richter | 9220f19 | 2008-02-03 23:04:38 +0100 | [diff] [blame] | 110 | #define SBP2_WORKAROUND_DELAY_INQUIRY 0x10 |
| 111 | #define SBP2_INQUIRY_DELAY 12 |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 112 | #define SBP2_WORKAROUND_POWER_CONDITION 0x20 |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 113 | #define SBP2_WORKAROUND_OVERRIDE 0x100 |
| 114 | |
| 115 | static int sbp2_param_workarounds; |
| 116 | module_param_named(workarounds, sbp2_param_workarounds, int, 0644); |
| 117 | MODULE_PARM_DESC(workarounds, "Work around device bugs (default = 0" |
| 118 | ", 128kB max transfer = " __stringify(SBP2_WORKAROUND_128K_MAX_TRANS) |
| 119 | ", 36 byte inquiry = " __stringify(SBP2_WORKAROUND_INQUIRY_36) |
| 120 | ", skip mode page 8 = " __stringify(SBP2_WORKAROUND_MODE_SENSE_8) |
| 121 | ", fix capacity = " __stringify(SBP2_WORKAROUND_FIX_CAPACITY) |
Stefan Richter | 9220f19 | 2008-02-03 23:04:38 +0100 | [diff] [blame] | 122 | ", delay inquiry = " __stringify(SBP2_WORKAROUND_DELAY_INQUIRY) |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 123 | ", set power condition in start stop unit = " |
| 124 | __stringify(SBP2_WORKAROUND_POWER_CONDITION) |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 125 | ", override internal blacklist = " __stringify(SBP2_WORKAROUND_OVERRIDE) |
| 126 | ", or a combination)"); |
| 127 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 128 | /* I don't know why the SCSI stack doesn't define something like this... */ |
Kristian Høgsberg | a98e271 | 2007-05-07 20:33:34 -0400 | [diff] [blame] | 129 | typedef void (*scsi_done_fn_t)(struct scsi_cmnd *); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 130 | |
| 131 | static const char sbp2_driver_name[] = "sbp2"; |
| 132 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 133 | /* |
| 134 | * We create one struct sbp2_logical_unit per SBP-2 Logical Unit Number Entry |
| 135 | * and one struct scsi_device per sbp2_logical_unit. |
| 136 | */ |
| 137 | struct sbp2_logical_unit { |
| 138 | struct sbp2_target *tgt; |
| 139 | struct list_head link; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 140 | struct fw_address_handler address_handler; |
| 141 | struct list_head orb_list; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 142 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 143 | u64 command_block_agent_address; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 144 | u16 lun; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 145 | int login_id; |
| 146 | |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 147 | /* |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 148 | * The generation is updated once we've logged in or reconnected |
| 149 | * to the logical unit. Thus, I/O to the device will automatically |
| 150 | * fail and get retried if it happens in a window where the device |
| 151 | * is not ready, e.g. after a bus reset but before we reconnect. |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 152 | */ |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 153 | int generation; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 154 | int retries; |
| 155 | struct delayed_work work; |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 156 | bool has_sdev; |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 157 | bool blocked; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 158 | }; |
| 159 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 160 | /* |
| 161 | * We create one struct sbp2_target per IEEE 1212 Unit Directory |
| 162 | * and one struct Scsi_Host per sbp2_target. |
| 163 | */ |
| 164 | struct sbp2_target { |
| 165 | struct kref kref; |
| 166 | struct fw_unit *unit; |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 167 | const char *bus_id; |
Stefan Richter | 05cca738 | 2008-01-26 17:42:45 +0100 | [diff] [blame] | 168 | struct list_head lu_list; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 169 | |
| 170 | u64 management_agent_address; |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 171 | u64 guid; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 172 | int directory_id; |
| 173 | int node_id; |
| 174 | int address_high; |
Stefan Richter | 05cca738 | 2008-01-26 17:42:45 +0100 | [diff] [blame] | 175 | unsigned int workarounds; |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 176 | unsigned int mgt_orb_timeout; |
Stefan Richter | a08e100 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 177 | unsigned int max_payload; |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 178 | |
| 179 | int dont_block; /* counter for each logical unit */ |
| 180 | int blocked; /* ditto */ |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 181 | }; |
| 182 | |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 183 | static struct fw_device *target_device(struct sbp2_target *tgt) |
| 184 | { |
| 185 | return fw_parent_device(tgt->unit); |
| 186 | } |
| 187 | |
Jay Fenlason | cd1f70fd | 2008-10-24 15:26:20 -0400 | [diff] [blame] | 188 | /* Impossible login_id, to detect logout attempt before successful login */ |
| 189 | #define INVALID_LOGIN_ID 0x10000 |
| 190 | |
Jarod Wilson | a4c379c | 2008-01-19 13:15:05 +0100 | [diff] [blame] | 191 | /* |
| 192 | * Per section 7.4.8 of the SBP-2 spec, a mgt_ORB_timeout value can be |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 193 | * provided in the config rom. Most devices do provide a value, which |
| 194 | * we'll use for login management orbs, but with some sane limits. |
Jarod Wilson | a4c379c | 2008-01-19 13:15:05 +0100 | [diff] [blame] | 195 | */ |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 196 | #define SBP2_MIN_LOGIN_ORB_TIMEOUT 5000U /* Timeout in ms */ |
| 197 | #define SBP2_MAX_LOGIN_ORB_TIMEOUT 40000U /* Timeout in ms */ |
Stefan Richter | 05cca738 | 2008-01-26 17:42:45 +0100 | [diff] [blame] | 198 | #define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */ |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 199 | #define SBP2_ORB_NULL 0x80000000 |
Jarod Wilson | 17cff9f | 2008-03-07 01:43:31 -0500 | [diff] [blame] | 200 | #define SBP2_RETRY_LIMIT 0xf /* 15 retries */ |
| 201 | #define SBP2_CYCLE_LIMIT (0xc8 << 12) /* 200 125us cycles */ |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 202 | |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 203 | /* |
| 204 | * The default maximum s/g segment size of a FireWire controller is |
| 205 | * usually 0x10000, but SBP-2 only allows 0xffff. Since buffers have to |
| 206 | * be quadlet-aligned, we set the length limit to 0xffff & ~3. |
| 207 | */ |
| 208 | #define SBP2_MAX_SEG_SIZE 0xfffc |
| 209 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 210 | /* Unit directory keys */ |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 211 | #define SBP2_CSR_UNIT_CHARACTERISTICS 0x3a |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 212 | #define SBP2_CSR_FIRMWARE_REVISION 0x3c |
| 213 | #define SBP2_CSR_LOGICAL_UNIT_NUMBER 0x14 |
| 214 | #define SBP2_CSR_LOGICAL_UNIT_DIRECTORY 0xd4 |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 215 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 216 | /* Management orb opcodes */ |
| 217 | #define SBP2_LOGIN_REQUEST 0x0 |
| 218 | #define SBP2_QUERY_LOGINS_REQUEST 0x1 |
| 219 | #define SBP2_RECONNECT_REQUEST 0x3 |
| 220 | #define SBP2_SET_PASSWORD_REQUEST 0x4 |
| 221 | #define SBP2_LOGOUT_REQUEST 0x7 |
| 222 | #define SBP2_ABORT_TASK_REQUEST 0xb |
| 223 | #define SBP2_ABORT_TASK_SET 0xc |
| 224 | #define SBP2_LOGICAL_UNIT_RESET 0xe |
| 225 | #define SBP2_TARGET_RESET_REQUEST 0xf |
| 226 | |
| 227 | /* Offsets for command block agent registers */ |
| 228 | #define SBP2_AGENT_STATE 0x00 |
| 229 | #define SBP2_AGENT_RESET 0x04 |
| 230 | #define SBP2_ORB_POINTER 0x08 |
| 231 | #define SBP2_DOORBELL 0x10 |
| 232 | #define SBP2_UNSOLICITED_STATUS_ENABLE 0x14 |
| 233 | |
| 234 | /* Status write response codes */ |
| 235 | #define SBP2_STATUS_REQUEST_COMPLETE 0x0 |
| 236 | #define SBP2_STATUS_TRANSPORT_FAILURE 0x1 |
| 237 | #define SBP2_STATUS_ILLEGAL_REQUEST 0x2 |
| 238 | #define SBP2_STATUS_VENDOR_DEPENDENT 0x3 |
| 239 | |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 240 | #define STATUS_GET_ORB_HIGH(v) ((v).status & 0xffff) |
| 241 | #define STATUS_GET_SBP_STATUS(v) (((v).status >> 16) & 0xff) |
| 242 | #define STATUS_GET_LEN(v) (((v).status >> 24) & 0x07) |
| 243 | #define STATUS_GET_DEAD(v) (((v).status >> 27) & 0x01) |
| 244 | #define STATUS_GET_RESPONSE(v) (((v).status >> 28) & 0x03) |
| 245 | #define STATUS_GET_SOURCE(v) (((v).status >> 30) & 0x03) |
| 246 | #define STATUS_GET_ORB_LOW(v) ((v).orb_low) |
| 247 | #define STATUS_GET_DATA(v) ((v).data) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 248 | |
| 249 | struct sbp2_status { |
| 250 | u32 status; |
| 251 | u32 orb_low; |
| 252 | u8 data[24]; |
| 253 | }; |
| 254 | |
| 255 | struct sbp2_pointer { |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 256 | __be32 high; |
| 257 | __be32 low; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 258 | }; |
| 259 | |
| 260 | struct sbp2_orb { |
| 261 | struct fw_transaction t; |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 262 | struct kref kref; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 263 | dma_addr_t request_bus; |
| 264 | int rcode; |
| 265 | struct sbp2_pointer pointer; |
Kristian Høgsberg | a98e271 | 2007-05-07 20:33:34 -0400 | [diff] [blame] | 266 | void (*callback)(struct sbp2_orb * orb, struct sbp2_status * status); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 267 | struct list_head link; |
| 268 | }; |
| 269 | |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 270 | #define MANAGEMENT_ORB_LUN(v) ((v)) |
| 271 | #define MANAGEMENT_ORB_FUNCTION(v) ((v) << 16) |
| 272 | #define MANAGEMENT_ORB_RECONNECT(v) ((v) << 20) |
Stefan Richter | 5cd54c9 | 2007-06-17 23:55:41 +0200 | [diff] [blame] | 273 | #define MANAGEMENT_ORB_EXCLUSIVE(v) ((v) ? 1 << 28 : 0) |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 274 | #define MANAGEMENT_ORB_REQUEST_FORMAT(v) ((v) << 29) |
| 275 | #define MANAGEMENT_ORB_NOTIFY ((1) << 31) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 276 | |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 277 | #define MANAGEMENT_ORB_RESPONSE_LENGTH(v) ((v)) |
| 278 | #define MANAGEMENT_ORB_PASSWORD_LENGTH(v) ((v) << 16) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 279 | |
| 280 | struct sbp2_management_orb { |
| 281 | struct sbp2_orb base; |
| 282 | struct { |
| 283 | struct sbp2_pointer password; |
| 284 | struct sbp2_pointer response; |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 285 | __be32 misc; |
| 286 | __be32 length; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 287 | struct sbp2_pointer status_fifo; |
| 288 | } request; |
| 289 | __be32 response[4]; |
| 290 | dma_addr_t response_bus; |
| 291 | struct completion done; |
| 292 | struct sbp2_status status; |
| 293 | }; |
| 294 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 295 | struct sbp2_login_response { |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 296 | __be32 misc; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 297 | struct sbp2_pointer command_block_agent; |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 298 | __be32 reconnect_hold; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 299 | }; |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 300 | #define COMMAND_ORB_DATA_SIZE(v) ((v)) |
| 301 | #define COMMAND_ORB_PAGE_SIZE(v) ((v) << 16) |
| 302 | #define COMMAND_ORB_PAGE_TABLE_PRESENT ((1) << 19) |
| 303 | #define COMMAND_ORB_MAX_PAYLOAD(v) ((v) << 20) |
| 304 | #define COMMAND_ORB_SPEED(v) ((v) << 24) |
Stefan Richter | 0d7dcbf | 2008-02-28 20:52:02 +0100 | [diff] [blame] | 305 | #define COMMAND_ORB_DIRECTION ((1) << 27) |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 306 | #define COMMAND_ORB_REQUEST_FORMAT(v) ((v) << 29) |
| 307 | #define COMMAND_ORB_NOTIFY ((1) << 31) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 308 | |
| 309 | struct sbp2_command_orb { |
| 310 | struct sbp2_orb base; |
| 311 | struct { |
| 312 | struct sbp2_pointer next; |
| 313 | struct sbp2_pointer data_descriptor; |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 314 | __be32 misc; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 315 | u8 command_block[12]; |
| 316 | } request; |
| 317 | struct scsi_cmnd *cmd; |
| 318 | scsi_done_fn_t done; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 319 | struct sbp2_logical_unit *lu; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 320 | |
Stefan Richter | 9fb2dd1 | 2007-07-01 13:55:31 +0200 | [diff] [blame] | 321 | struct sbp2_pointer page_table[SG_ALL] __attribute__((aligned(8))); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 322 | dma_addr_t page_table_bus; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 323 | }; |
| 324 | |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 325 | #define SBP2_ROM_VALUE_WILDCARD ~0 /* match all */ |
| 326 | #define SBP2_ROM_VALUE_MISSING 0xff000000 /* not present in the unit dir. */ |
| 327 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 328 | /* |
| 329 | * List of devices with known bugs. |
| 330 | * |
| 331 | * The firmware_revision field, masked with 0xffff00, is the best |
| 332 | * indicator for the type of bridge chip of a device. It yields a few |
| 333 | * false positives but this did not break correctly behaving devices |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 334 | * so far. |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 335 | */ |
| 336 | static const struct { |
| 337 | u32 firmware_revision; |
| 338 | u32 model; |
Stefan Richter | 05cca738 | 2008-01-26 17:42:45 +0100 | [diff] [blame] | 339 | unsigned int workarounds; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 340 | } sbp2_workarounds_table[] = { |
| 341 | /* DViCO Momobay CX-1 with TSB42AA9 bridge */ { |
| 342 | .firmware_revision = 0x002800, |
| 343 | .model = 0x001010, |
| 344 | .workarounds = SBP2_WORKAROUND_INQUIRY_36 | |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 345 | SBP2_WORKAROUND_MODE_SENSE_8 | |
| 346 | SBP2_WORKAROUND_POWER_CONDITION, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 347 | }, |
Stefan Richter | 9220f19 | 2008-02-03 23:04:38 +0100 | [diff] [blame] | 348 | /* DViCO Momobay FX-3A with TSB42AA9A bridge */ { |
| 349 | .firmware_revision = 0x002800, |
| 350 | .model = 0x000000, |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 351 | .workarounds = SBP2_WORKAROUND_DELAY_INQUIRY | |
| 352 | SBP2_WORKAROUND_POWER_CONDITION, |
Stefan Richter | 9220f19 | 2008-02-03 23:04:38 +0100 | [diff] [blame] | 353 | }, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 354 | /* Initio bridges, actually only needed for some older ones */ { |
| 355 | .firmware_revision = 0x000200, |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 356 | .model = SBP2_ROM_VALUE_WILDCARD, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 357 | .workarounds = SBP2_WORKAROUND_INQUIRY_36, |
| 358 | }, |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 359 | /* PL-3507 bridge with Prolific firmware */ { |
| 360 | .firmware_revision = 0x012800, |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 361 | .model = SBP2_ROM_VALUE_WILDCARD, |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 362 | .workarounds = SBP2_WORKAROUND_POWER_CONDITION, |
| 363 | }, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 364 | /* Symbios bridge */ { |
| 365 | .firmware_revision = 0xa0b800, |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 366 | .model = SBP2_ROM_VALUE_WILDCARD, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 367 | .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS, |
| 368 | }, |
Stefan Richter | 2aa9ff7 | 2008-03-11 22:32:03 +0100 | [diff] [blame] | 369 | /* Datafab MD2-FW2 with Symbios/LSILogic SYM13FW500 bridge */ { |
| 370 | .firmware_revision = 0x002600, |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 371 | .model = SBP2_ROM_VALUE_WILDCARD, |
Stefan Richter | 2aa9ff7 | 2008-03-11 22:32:03 +0100 | [diff] [blame] | 372 | .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS, |
| 373 | }, |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 374 | /* |
Stefan Richter | c8c4707 | 2009-01-29 00:11:59 +0100 | [diff] [blame] | 375 | * iPod 2nd generation: needs 128k max transfer size workaround |
| 376 | * iPod 3rd generation: needs fix capacity workaround |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 377 | */ |
Stefan Richter | c8c4707 | 2009-01-29 00:11:59 +0100 | [diff] [blame] | 378 | { |
| 379 | .firmware_revision = 0x0a2700, |
| 380 | .model = 0x000000, |
| 381 | .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS | |
| 382 | SBP2_WORKAROUND_FIX_CAPACITY, |
| 383 | }, |
| 384 | /* iPod 4th generation */ { |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 385 | .firmware_revision = 0x0a2700, |
| 386 | .model = 0x000021, |
| 387 | .workarounds = SBP2_WORKAROUND_FIX_CAPACITY, |
| 388 | }, |
| 389 | /* iPod mini */ { |
| 390 | .firmware_revision = 0x0a2700, |
Stefan Richter | 031bb27 | 2008-11-22 12:38:58 +0100 | [diff] [blame] | 391 | .model = 0x000022, |
| 392 | .workarounds = SBP2_WORKAROUND_FIX_CAPACITY, |
| 393 | }, |
| 394 | /* iPod mini */ { |
| 395 | .firmware_revision = 0x0a2700, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 396 | .model = 0x000023, |
| 397 | .workarounds = SBP2_WORKAROUND_FIX_CAPACITY, |
| 398 | }, |
| 399 | /* iPod Photo */ { |
| 400 | .firmware_revision = 0x0a2700, |
| 401 | .model = 0x00007e, |
| 402 | .workarounds = SBP2_WORKAROUND_FIX_CAPACITY, |
| 403 | } |
| 404 | }; |
| 405 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 406 | static void free_orb(struct kref *kref) |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 407 | { |
| 408 | struct sbp2_orb *orb = container_of(kref, struct sbp2_orb, kref); |
| 409 | |
| 410 | kfree(orb); |
| 411 | } |
| 412 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 413 | static void sbp2_status_write(struct fw_card *card, struct fw_request *request, |
| 414 | int tcode, int destination, int source, |
| 415 | int generation, int speed, |
| 416 | unsigned long long offset, |
| 417 | void *payload, size_t length, void *callback_data) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 418 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 419 | struct sbp2_logical_unit *lu = callback_data; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 420 | struct sbp2_orb *orb; |
| 421 | struct sbp2_status status; |
| 422 | size_t header_size; |
| 423 | unsigned long flags; |
| 424 | |
| 425 | if (tcode != TCODE_WRITE_BLOCK_REQUEST || |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 426 | length == 0 || length > sizeof(status)) { |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 427 | fw_send_response(card, request, RCODE_TYPE_ERROR); |
| 428 | return; |
| 429 | } |
| 430 | |
| 431 | header_size = min(length, 2 * sizeof(u32)); |
| 432 | fw_memcpy_from_be32(&status, payload, header_size); |
| 433 | if (length > header_size) |
| 434 | memcpy(status.data, payload + 8, length - header_size); |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 435 | if (STATUS_GET_SOURCE(status) == 2 || STATUS_GET_SOURCE(status) == 3) { |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 436 | fw_notify("non-orb related status write, not handled\n"); |
| 437 | fw_send_response(card, request, RCODE_COMPLETE); |
| 438 | return; |
| 439 | } |
| 440 | |
| 441 | /* Lookup the orb corresponding to this status write. */ |
| 442 | spin_lock_irqsave(&card->lock, flags); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 443 | list_for_each_entry(orb, &lu->orb_list, link) { |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 444 | if (STATUS_GET_ORB_HIGH(status) == 0 && |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 445 | STATUS_GET_ORB_LOW(status) == orb->request_bus) { |
| 446 | orb->rcode = RCODE_COMPLETE; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 447 | list_del(&orb->link); |
| 448 | break; |
| 449 | } |
| 450 | } |
| 451 | spin_unlock_irqrestore(&card->lock, flags); |
| 452 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 453 | if (&orb->link != &lu->orb_list) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 454 | orb->callback(orb, &status); |
| 455 | else |
| 456 | fw_error("status write for unknown orb\n"); |
| 457 | |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 458 | kref_put(&orb->kref, free_orb); |
| 459 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 460 | fw_send_response(card, request, RCODE_COMPLETE); |
| 461 | } |
| 462 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 463 | static void complete_transaction(struct fw_card *card, int rcode, |
| 464 | void *payload, size_t length, void *data) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 465 | { |
| 466 | struct sbp2_orb *orb = data; |
| 467 | unsigned long flags; |
| 468 | |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 469 | /* |
| 470 | * This is a little tricky. We can get the status write for |
| 471 | * the orb before we get this callback. The status write |
| 472 | * handler above will assume the orb pointer transaction was |
| 473 | * successful and set the rcode to RCODE_COMPLETE for the orb. |
| 474 | * So this callback only sets the rcode if it hasn't already |
| 475 | * been set and only does the cleanup if the transaction |
| 476 | * failed and we didn't already get a status write. |
| 477 | */ |
| 478 | spin_lock_irqsave(&card->lock, flags); |
| 479 | |
| 480 | if (orb->rcode == -1) |
| 481 | orb->rcode = rcode; |
| 482 | if (orb->rcode != RCODE_COMPLETE) { |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 483 | list_del(&orb->link); |
Stefan Richter | 1b34e97 | 2007-08-25 10:40:42 +0200 | [diff] [blame] | 484 | spin_unlock_irqrestore(&card->lock, flags); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 485 | orb->callback(orb, NULL); |
Stefan Richter | 1b34e97 | 2007-08-25 10:40:42 +0200 | [diff] [blame] | 486 | } else { |
| 487 | spin_unlock_irqrestore(&card->lock, flags); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 488 | } |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 489 | |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 490 | kref_put(&orb->kref, free_orb); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 491 | } |
| 492 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 493 | static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu, |
| 494 | int node_id, int generation, u64 offset) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 495 | { |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 496 | struct fw_device *device = target_device(lu->tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 497 | unsigned long flags; |
| 498 | |
| 499 | orb->pointer.high = 0; |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 500 | orb->pointer.low = cpu_to_be32(orb->request_bus); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 501 | |
| 502 | spin_lock_irqsave(&device->card->lock, flags); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 503 | list_add_tail(&orb->link, &lu->orb_list); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 504 | spin_unlock_irqrestore(&device->card->lock, flags); |
| 505 | |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 506 | /* Take a ref for the orb list and for the transaction callback. */ |
| 507 | kref_get(&orb->kref); |
| 508 | kref_get(&orb->kref); |
| 509 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 510 | fw_send_request(device->card, &orb->t, TCODE_WRITE_BLOCK_REQUEST, |
Stefan Richter | f139749 | 2007-06-10 21:31:36 +0200 | [diff] [blame] | 511 | node_id, generation, device->max_speed, offset, |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 512 | &orb->pointer, sizeof(orb->pointer), |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 513 | complete_transaction, orb); |
| 514 | } |
| 515 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 516 | static int sbp2_cancel_orbs(struct sbp2_logical_unit *lu) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 517 | { |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 518 | struct fw_device *device = target_device(lu->tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 519 | struct sbp2_orb *orb, *next; |
| 520 | struct list_head list; |
| 521 | unsigned long flags; |
Kristian Høgsberg | 2aaad97 | 2007-03-07 12:12:47 -0500 | [diff] [blame] | 522 | int retval = -ENOENT; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 523 | |
| 524 | INIT_LIST_HEAD(&list); |
| 525 | spin_lock_irqsave(&device->card->lock, flags); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 526 | list_splice_init(&lu->orb_list, &list); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 527 | spin_unlock_irqrestore(&device->card->lock, flags); |
| 528 | |
| 529 | list_for_each_entry_safe(orb, next, &list, link) { |
Kristian Høgsberg | 2aaad97 | 2007-03-07 12:12:47 -0500 | [diff] [blame] | 530 | retval = 0; |
Kristian Høgsberg | 730c32f | 2007-02-06 14:49:32 -0500 | [diff] [blame] | 531 | if (fw_cancel_transaction(device->card, &orb->t) == 0) |
| 532 | continue; |
| 533 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 534 | orb->rcode = RCODE_CANCELLED; |
| 535 | orb->callback(orb, NULL); |
| 536 | } |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 537 | |
Kristian Høgsberg | 2aaad97 | 2007-03-07 12:12:47 -0500 | [diff] [blame] | 538 | return retval; |
Kristian Høgsberg | 1d3d52c | 2007-02-06 14:49:33 -0500 | [diff] [blame] | 539 | } |
| 540 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 541 | static void complete_management_orb(struct sbp2_orb *base_orb, |
| 542 | struct sbp2_status *status) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 543 | { |
| 544 | struct sbp2_management_orb *orb = |
Jay Fenlason | 6f06148 | 2007-06-27 16:04:33 -0400 | [diff] [blame] | 545 | container_of(base_orb, struct sbp2_management_orb, base); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 546 | |
| 547 | if (status) |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 548 | memcpy(&orb->status, status, sizeof(*status)); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 549 | complete(&orb->done); |
| 550 | } |
| 551 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 552 | static int sbp2_send_management_orb(struct sbp2_logical_unit *lu, int node_id, |
| 553 | int generation, int function, |
| 554 | int lun_or_login_id, void *response) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 555 | { |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 556 | struct fw_device *device = target_device(lu->tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 557 | struct sbp2_management_orb *orb; |
Jarod Wilson | a4c379c | 2008-01-19 13:15:05 +0100 | [diff] [blame] | 558 | unsigned int timeout; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 559 | int retval = -ENOMEM; |
| 560 | |
Stefan Richter | be6f48b | 2008-01-27 19:14:44 +0100 | [diff] [blame] | 561 | if (function == SBP2_LOGOUT_REQUEST && fw_device_is_shutdown(device)) |
| 562 | return 0; |
| 563 | |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 564 | orb = kzalloc(sizeof(*orb), GFP_ATOMIC); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 565 | if (orb == NULL) |
| 566 | return -ENOMEM; |
| 567 | |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 568 | kref_init(&orb->base.kref); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 569 | orb->response_bus = |
| 570 | dma_map_single(device->card->device, &orb->response, |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 571 | sizeof(orb->response), DMA_FROM_DEVICE); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 572 | if (dma_mapping_error(device->card->device, orb->response_bus)) |
Stefan Richter | 7aa4848 | 2007-07-02 21:04:44 +0200 | [diff] [blame] | 573 | goto fail_mapping_response; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 574 | |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 575 | orb->request.response.high = 0; |
| 576 | orb->request.response.low = cpu_to_be32(orb->response_bus); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 577 | |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 578 | orb->request.misc = cpu_to_be32( |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 579 | MANAGEMENT_ORB_NOTIFY | |
| 580 | MANAGEMENT_ORB_FUNCTION(function) | |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 581 | MANAGEMENT_ORB_LUN(lun_or_login_id)); |
| 582 | orb->request.length = cpu_to_be32( |
| 583 | MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb->response))); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 584 | |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 585 | orb->request.status_fifo.high = |
| 586 | cpu_to_be32(lu->address_handler.offset >> 32); |
| 587 | orb->request.status_fifo.low = |
| 588 | cpu_to_be32(lu->address_handler.offset); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 589 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 590 | if (function == SBP2_LOGIN_REQUEST) { |
Stefan Richter | 14dc992 | 2008-01-20 01:25:31 +0100 | [diff] [blame] | 591 | /* Ask for 2^2 == 4 seconds reconnect grace period */ |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 592 | orb->request.misc |= cpu_to_be32( |
Stefan Richter | 14dc992 | 2008-01-20 01:25:31 +0100 | [diff] [blame] | 593 | MANAGEMENT_ORB_RECONNECT(2) | |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 594 | MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login)); |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 595 | timeout = lu->tgt->mgt_orb_timeout; |
Jarod Wilson | a4c379c | 2008-01-19 13:15:05 +0100 | [diff] [blame] | 596 | } else { |
| 597 | timeout = SBP2_ORB_TIMEOUT; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 598 | } |
| 599 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 600 | init_completion(&orb->done); |
| 601 | orb->base.callback = complete_management_orb; |
Kristian Høgsberg | 2aaad97 | 2007-03-07 12:12:47 -0500 | [diff] [blame] | 602 | |
Stefan Richter | 7aa4848 | 2007-07-02 21:04:44 +0200 | [diff] [blame] | 603 | orb->base.request_bus = |
| 604 | dma_map_single(device->card->device, &orb->request, |
| 605 | sizeof(orb->request), DMA_TO_DEVICE); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 606 | if (dma_mapping_error(device->card->device, orb->base.request_bus)) |
Stefan Richter | 7aa4848 | 2007-07-02 21:04:44 +0200 | [diff] [blame] | 607 | goto fail_mapping_request; |
| 608 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 609 | sbp2_send_orb(&orb->base, lu, node_id, generation, |
| 610 | lu->tgt->management_agent_address); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 611 | |
Jarod Wilson | a4c379c | 2008-01-19 13:15:05 +0100 | [diff] [blame] | 612 | wait_for_completion_timeout(&orb->done, msecs_to_jiffies(timeout)); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 613 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 614 | retval = -EIO; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 615 | if (sbp2_cancel_orbs(lu) == 0) { |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 616 | fw_error("%s: orb reply timed out, rcode=0x%02x\n", |
| 617 | lu->tgt->bus_id, orb->base.rcode); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 618 | goto out; |
| 619 | } |
| 620 | |
Kristian Høgsberg | 2aaad97 | 2007-03-07 12:12:47 -0500 | [diff] [blame] | 621 | if (orb->base.rcode != RCODE_COMPLETE) { |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 622 | fw_error("%s: management write failed, rcode 0x%02x\n", |
| 623 | lu->tgt->bus_id, orb->base.rcode); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 624 | goto out; |
| 625 | } |
| 626 | |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 627 | if (STATUS_GET_RESPONSE(orb->status) != 0 || |
| 628 | STATUS_GET_SBP_STATUS(orb->status) != 0) { |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 629 | fw_error("%s: error status: %d:%d\n", lu->tgt->bus_id, |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 630 | STATUS_GET_RESPONSE(orb->status), |
| 631 | STATUS_GET_SBP_STATUS(orb->status)); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 632 | goto out; |
| 633 | } |
| 634 | |
| 635 | retval = 0; |
| 636 | out: |
| 637 | dma_unmap_single(device->card->device, orb->base.request_bus, |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 638 | sizeof(orb->request), DMA_TO_DEVICE); |
Stefan Richter | 7aa4848 | 2007-07-02 21:04:44 +0200 | [diff] [blame] | 639 | fail_mapping_request: |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 640 | dma_unmap_single(device->card->device, orb->response_bus, |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 641 | sizeof(orb->response), DMA_FROM_DEVICE); |
Stefan Richter | 7aa4848 | 2007-07-02 21:04:44 +0200 | [diff] [blame] | 642 | fail_mapping_response: |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 643 | if (response) |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 644 | memcpy(response, orb->response, sizeof(orb->response)); |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 645 | kref_put(&orb->base.kref, free_orb); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 646 | |
| 647 | return retval; |
| 648 | } |
| 649 | |
Stefan Richter | e0e6021 | 2008-02-03 23:08:58 +0100 | [diff] [blame] | 650 | static void sbp2_agent_reset(struct sbp2_logical_unit *lu) |
| 651 | { |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 652 | struct fw_device *device = target_device(lu->tgt); |
Jay Fenlason | 1e119fa | 2008-07-20 14:20:53 +0200 | [diff] [blame] | 653 | __be32 d = 0; |
Stefan Richter | e0e6021 | 2008-02-03 23:08:58 +0100 | [diff] [blame] | 654 | |
Jay Fenlason | 1e119fa | 2008-07-20 14:20:53 +0200 | [diff] [blame] | 655 | fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST, |
| 656 | lu->tgt->node_id, lu->generation, device->max_speed, |
| 657 | lu->command_block_agent_address + SBP2_AGENT_RESET, |
| 658 | &d, sizeof(d)); |
Stefan Richter | e0e6021 | 2008-02-03 23:08:58 +0100 | [diff] [blame] | 659 | } |
| 660 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 661 | static void complete_agent_reset_write_no_wait(struct fw_card *card, |
| 662 | int rcode, void *payload, size_t length, void *data) |
Stefan Richter | e0e6021 | 2008-02-03 23:08:58 +0100 | [diff] [blame] | 663 | { |
| 664 | kfree(data); |
| 665 | } |
| 666 | |
| 667 | static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 668 | { |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 669 | struct fw_device *device = target_device(lu->tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 670 | struct fw_transaction *t; |
Jay Fenlason | 1e119fa | 2008-07-20 14:20:53 +0200 | [diff] [blame] | 671 | static __be32 d; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 672 | |
Stefan Richter | e0e6021 | 2008-02-03 23:08:58 +0100 | [diff] [blame] | 673 | t = kmalloc(sizeof(*t), GFP_ATOMIC); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 674 | if (t == NULL) |
Stefan Richter | e0e6021 | 2008-02-03 23:08:58 +0100 | [diff] [blame] | 675 | return; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 676 | |
| 677 | fw_send_request(device->card, t, TCODE_WRITE_QUADLET_REQUEST, |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 678 | lu->tgt->node_id, lu->generation, device->max_speed, |
| 679 | lu->command_block_agent_address + SBP2_AGENT_RESET, |
Jay Fenlason | 1e119fa | 2008-07-20 14:20:53 +0200 | [diff] [blame] | 680 | &d, sizeof(d), complete_agent_reset_write_no_wait, t); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 681 | } |
| 682 | |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 683 | static inline void sbp2_allow_block(struct sbp2_logical_unit *lu) |
| 684 | { |
| 685 | /* |
| 686 | * We may access dont_block without taking card->lock here: |
| 687 | * All callers of sbp2_allow_block() and all callers of sbp2_unblock() |
| 688 | * are currently serialized against each other. |
| 689 | * And a wrong result in sbp2_conditionally_block()'s access of |
| 690 | * dont_block is rather harmless, it simply misses its first chance. |
| 691 | */ |
| 692 | --lu->tgt->dont_block; |
| 693 | } |
| 694 | |
| 695 | /* |
| 696 | * Blocks lu->tgt if all of the following conditions are met: |
| 697 | * - Login, INQUIRY, and high-level SCSI setup of all of the target's |
| 698 | * logical units have been finished (indicated by dont_block == 0). |
| 699 | * - lu->generation is stale. |
| 700 | * |
| 701 | * Note, scsi_block_requests() must be called while holding card->lock, |
| 702 | * otherwise it might foil sbp2_[conditionally_]unblock()'s attempt to |
| 703 | * unblock the target. |
| 704 | */ |
| 705 | static void sbp2_conditionally_block(struct sbp2_logical_unit *lu) |
| 706 | { |
| 707 | struct sbp2_target *tgt = lu->tgt; |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 708 | struct fw_card *card = target_device(tgt)->card; |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 709 | struct Scsi_Host *shost = |
| 710 | container_of((void *)tgt, struct Scsi_Host, hostdata[0]); |
| 711 | unsigned long flags; |
| 712 | |
| 713 | spin_lock_irqsave(&card->lock, flags); |
| 714 | if (!tgt->dont_block && !lu->blocked && |
| 715 | lu->generation != card->generation) { |
| 716 | lu->blocked = true; |
Stefan Richter | a5fd9ec | 2008-02-28 20:53:45 +0100 | [diff] [blame] | 717 | if (++tgt->blocked == 1) |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 718 | scsi_block_requests(shost); |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 719 | } |
| 720 | spin_unlock_irqrestore(&card->lock, flags); |
| 721 | } |
| 722 | |
| 723 | /* |
| 724 | * Unblocks lu->tgt as soon as all its logical units can be unblocked. |
| 725 | * Note, it is harmless to run scsi_unblock_requests() outside the |
| 726 | * card->lock protected section. On the other hand, running it inside |
| 727 | * the section might clash with shost->host_lock. |
| 728 | */ |
| 729 | static void sbp2_conditionally_unblock(struct sbp2_logical_unit *lu) |
| 730 | { |
| 731 | struct sbp2_target *tgt = lu->tgt; |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 732 | struct fw_card *card = target_device(tgt)->card; |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 733 | struct Scsi_Host *shost = |
| 734 | container_of((void *)tgt, struct Scsi_Host, hostdata[0]); |
| 735 | unsigned long flags; |
| 736 | bool unblock = false; |
| 737 | |
| 738 | spin_lock_irqsave(&card->lock, flags); |
| 739 | if (lu->blocked && lu->generation == card->generation) { |
| 740 | lu->blocked = false; |
| 741 | unblock = --tgt->blocked == 0; |
| 742 | } |
| 743 | spin_unlock_irqrestore(&card->lock, flags); |
| 744 | |
Stefan Richter | a5fd9ec | 2008-02-28 20:53:45 +0100 | [diff] [blame] | 745 | if (unblock) |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 746 | scsi_unblock_requests(shost); |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 747 | } |
| 748 | |
| 749 | /* |
| 750 | * Prevents future blocking of tgt and unblocks it. |
| 751 | * Note, it is harmless to run scsi_unblock_requests() outside the |
| 752 | * card->lock protected section. On the other hand, running it inside |
| 753 | * the section might clash with shost->host_lock. |
| 754 | */ |
| 755 | static void sbp2_unblock(struct sbp2_target *tgt) |
| 756 | { |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 757 | struct fw_card *card = target_device(tgt)->card; |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 758 | struct Scsi_Host *shost = |
| 759 | container_of((void *)tgt, struct Scsi_Host, hostdata[0]); |
| 760 | unsigned long flags; |
| 761 | |
| 762 | spin_lock_irqsave(&card->lock, flags); |
| 763 | ++tgt->dont_block; |
| 764 | spin_unlock_irqrestore(&card->lock, flags); |
| 765 | |
| 766 | scsi_unblock_requests(shost); |
| 767 | } |
| 768 | |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 769 | static int sbp2_lun2int(u16 lun) |
| 770 | { |
| 771 | struct scsi_lun eight_bytes_lun; |
| 772 | |
| 773 | memset(&eight_bytes_lun, 0, sizeof(eight_bytes_lun)); |
| 774 | eight_bytes_lun.scsi_lun[0] = (lun >> 8) & 0xff; |
| 775 | eight_bytes_lun.scsi_lun[1] = lun & 0xff; |
| 776 | |
| 777 | return scsilun_to_int(&eight_bytes_lun); |
| 778 | } |
| 779 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 780 | static void sbp2_release_target(struct kref *kref) |
Kristian Høgsberg | b3d6e15 | 2007-03-14 17:34:58 -0400 | [diff] [blame] | 781 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 782 | struct sbp2_target *tgt = container_of(kref, struct sbp2_target, kref); |
| 783 | struct sbp2_logical_unit *lu, *next; |
| 784 | struct Scsi_Host *shost = |
| 785 | container_of((void *)tgt, struct Scsi_Host, hostdata[0]); |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 786 | struct scsi_device *sdev; |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 787 | struct fw_device *device = target_device(tgt); |
Kristian Høgsberg | b3d6e15 | 2007-03-14 17:34:58 -0400 | [diff] [blame] | 788 | |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 789 | /* prevent deadlocks */ |
| 790 | sbp2_unblock(tgt); |
| 791 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 792 | list_for_each_entry_safe(lu, next, &tgt->lu_list, link) { |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 793 | sdev = scsi_device_lookup(shost, 0, 0, sbp2_lun2int(lu->lun)); |
| 794 | if (sdev) { |
| 795 | scsi_remove_device(sdev); |
| 796 | scsi_device_put(sdev); |
Stefan Richter | 33f1c6c3 | 2008-02-19 09:05:49 +0100 | [diff] [blame] | 797 | } |
Jay Fenlason | cd1f70fd | 2008-10-24 15:26:20 -0400 | [diff] [blame] | 798 | if (lu->login_id != INVALID_LOGIN_ID) { |
| 799 | int generation, node_id; |
| 800 | /* |
| 801 | * tgt->node_id may be obsolete here if we failed |
| 802 | * during initial login or after a bus reset where |
| 803 | * the topology changed. |
| 804 | */ |
| 805 | generation = device->generation; |
| 806 | smp_rmb(); /* node_id vs. generation */ |
| 807 | node_id = device->node_id; |
| 808 | sbp2_send_management_orb(lu, node_id, generation, |
| 809 | SBP2_LOGOUT_REQUEST, |
| 810 | lu->login_id, NULL); |
| 811 | } |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 812 | fw_core_remove_address_handler(&lu->address_handler); |
| 813 | list_del(&lu->link); |
| 814 | kfree(lu); |
| 815 | } |
| 816 | scsi_remove_host(shost); |
Stefan Richter | f32ddad | 2008-04-24 23:17:47 +0200 | [diff] [blame] | 817 | fw_notify("released %s, target %d:0:0\n", tgt->bus_id, shost->host_no); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 818 | |
Stefan Richter | 1dc3bea | 2008-02-24 19:01:21 +0100 | [diff] [blame] | 819 | fw_unit_put(tgt->unit); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 820 | scsi_host_put(shost); |
Stefan Richter | 855c603 | 2008-02-27 22:14:27 +0100 | [diff] [blame] | 821 | fw_device_put(device); |
Kristian Høgsberg | b3d6e15 | 2007-03-14 17:34:58 -0400 | [diff] [blame] | 822 | } |
| 823 | |
Stefan Richter | df8ec24 | 2007-08-12 12:51:18 +0200 | [diff] [blame] | 824 | static struct workqueue_struct *sbp2_wq; |
| 825 | |
Jay Fenlason | cd1f70fd | 2008-10-24 15:26:20 -0400 | [diff] [blame] | 826 | static void sbp2_target_put(struct sbp2_target *tgt) |
| 827 | { |
| 828 | kref_put(&tgt->kref, sbp2_release_target); |
| 829 | } |
| 830 | |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 831 | /* |
| 832 | * Always get the target's kref when scheduling work on one its units. |
| 833 | * Each workqueue job is responsible to call sbp2_target_put() upon return. |
| 834 | */ |
| 835 | static void sbp2_queue_work(struct sbp2_logical_unit *lu, unsigned long delay) |
| 836 | { |
Jay Fenlason | cd1f70fd | 2008-10-24 15:26:20 -0400 | [diff] [blame] | 837 | kref_get(&lu->tgt->kref); |
| 838 | if (!queue_delayed_work(sbp2_wq, &lu->work, delay)) |
| 839 | sbp2_target_put(lu->tgt); |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 840 | } |
| 841 | |
Jarod Wilson | 17cff9f | 2008-03-07 01:43:31 -0500 | [diff] [blame] | 842 | /* |
| 843 | * Write retransmit retry values into the BUSY_TIMEOUT register. |
| 844 | * - The single-phase retry protocol is supported by all SBP-2 devices, but the |
| 845 | * default retry_limit value is 0 (i.e. never retry transmission). We write a |
| 846 | * saner value after logging into the device. |
| 847 | * - The dual-phase retry protocol is optional to implement, and if not |
| 848 | * supported, writes to the dual-phase portion of the register will be |
| 849 | * ignored. We try to write the original 1394-1995 default here. |
| 850 | * - In the case of devices that are also SBP-3-compliant, all writes are |
| 851 | * ignored, as the register is read-only, but contains single-phase retry of |
| 852 | * 15, which is what we're trying to set for all SBP-2 device anyway, so this |
| 853 | * write attempt is safe and yields more consistent behavior for all devices. |
| 854 | * |
| 855 | * See section 8.3.2.3.5 of the 1394-1995 spec, section 6.2 of the SBP-2 spec, |
| 856 | * and section 6.4 of the SBP-3 spec for further details. |
| 857 | */ |
Jarod Wilson | 51f9dbe | 2008-03-07 01:43:01 -0500 | [diff] [blame] | 858 | static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu) |
| 859 | { |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 860 | struct fw_device *device = target_device(lu->tgt); |
Jay Fenlason | 1e119fa | 2008-07-20 14:20:53 +0200 | [diff] [blame] | 861 | __be32 d = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT); |
Jarod Wilson | 51f9dbe | 2008-03-07 01:43:01 -0500 | [diff] [blame] | 862 | |
Jay Fenlason | 1e119fa | 2008-07-20 14:20:53 +0200 | [diff] [blame] | 863 | fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST, |
| 864 | lu->tgt->node_id, lu->generation, device->max_speed, |
| 865 | CSR_REGISTER_BASE + CSR_BUSY_TIMEOUT, |
| 866 | &d, sizeof(d)); |
Jarod Wilson | 51f9dbe | 2008-03-07 01:43:01 -0500 | [diff] [blame] | 867 | } |
| 868 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 869 | static void sbp2_reconnect(struct work_struct *work); |
| 870 | |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 871 | static void sbp2_login(struct work_struct *work) |
| 872 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 873 | struct sbp2_logical_unit *lu = |
| 874 | container_of(work, struct sbp2_logical_unit, work.work); |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 875 | struct sbp2_target *tgt = lu->tgt; |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 876 | struct fw_device *device = target_device(tgt); |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 877 | struct Scsi_Host *shost; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 878 | struct scsi_device *sdev; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 879 | struct sbp2_login_response response; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 880 | int generation, node_id, local_node_id; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 881 | |
Stefan Richter | be6f48b | 2008-01-27 19:14:44 +0100 | [diff] [blame] | 882 | if (fw_device_is_shutdown(device)) |
| 883 | goto out; |
| 884 | |
Stefan Richter | 5a8a1bc | 2008-01-24 01:53:19 +0100 | [diff] [blame] | 885 | generation = device->generation; |
Stefan Richter | 621f6dd | 2008-10-26 11:04:20 +0100 | [diff] [blame] | 886 | smp_rmb(); /* node IDs must not be older than generation */ |
Stefan Richter | 5a8a1bc | 2008-01-24 01:53:19 +0100 | [diff] [blame] | 887 | node_id = device->node_id; |
| 888 | local_node_id = device->card->node_id; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 889 | |
Stefan Richter | ce896d9 | 2008-02-03 23:11:39 +0100 | [diff] [blame] | 890 | /* If this is a re-login attempt, log out, or we might be rejected. */ |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 891 | if (lu->has_sdev) |
Stefan Richter | ce896d9 | 2008-02-03 23:11:39 +0100 | [diff] [blame] | 892 | sbp2_send_management_orb(lu, device->node_id, generation, |
| 893 | SBP2_LOGOUT_REQUEST, lu->login_id, NULL); |
| 894 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 895 | if (sbp2_send_management_orb(lu, node_id, generation, |
| 896 | SBP2_LOGIN_REQUEST, lu->lun, &response) < 0) { |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 897 | if (lu->retries++ < 5) { |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 898 | sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5)); |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 899 | } else { |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 900 | fw_error("%s: failed to login to LUN %04x\n", |
| 901 | tgt->bus_id, lu->lun); |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 902 | /* Let any waiting I/O fail from now on. */ |
| 903 | sbp2_unblock(lu->tgt); |
| 904 | } |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 905 | goto out; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 906 | } |
| 907 | |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 908 | tgt->node_id = node_id; |
| 909 | tgt->address_high = local_node_id << 16; |
Stefan Richter | 621f6dd | 2008-10-26 11:04:20 +0100 | [diff] [blame] | 910 | smp_wmb(); /* node IDs must not be older than generation */ |
| 911 | lu->generation = generation; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 912 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 913 | lu->command_block_agent_address = |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 914 | ((u64)(be32_to_cpu(response.command_block_agent.high) & 0xffff) |
| 915 | << 32) | be32_to_cpu(response.command_block_agent.low); |
| 916 | lu->login_id = be32_to_cpu(response.misc) & 0xffff; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 917 | |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 918 | fw_notify("%s: logged in to LUN %04x (%d retries)\n", |
| 919 | tgt->bus_id, lu->lun, lu->retries); |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 920 | |
Jarod Wilson | 51f9dbe | 2008-03-07 01:43:01 -0500 | [diff] [blame] | 921 | /* set appropriate retry limit(s) in BUSY_TIMEOUT register */ |
| 922 | sbp2_set_busy_timeout(lu); |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 923 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 924 | PREPARE_DELAYED_WORK(&lu->work, sbp2_reconnect); |
| 925 | sbp2_agent_reset(lu); |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 926 | |
Stefan Richter | 0fa6dfd | 2008-02-03 23:10:47 +0100 | [diff] [blame] | 927 | /* This was a re-login. */ |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 928 | if (lu->has_sdev) { |
Stefan Richter | 0fa6dfd | 2008-02-03 23:10:47 +0100 | [diff] [blame] | 929 | sbp2_cancel_orbs(lu); |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 930 | sbp2_conditionally_unblock(lu); |
Stefan Richter | 0fa6dfd | 2008-02-03 23:10:47 +0100 | [diff] [blame] | 931 | goto out; |
| 932 | } |
| 933 | |
Stefan Richter | 9220f19 | 2008-02-03 23:04:38 +0100 | [diff] [blame] | 934 | if (lu->tgt->workarounds & SBP2_WORKAROUND_DELAY_INQUIRY) |
| 935 | ssleep(SBP2_INQUIRY_DELAY); |
| 936 | |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 937 | shost = container_of((void *)tgt, struct Scsi_Host, hostdata[0]); |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 938 | sdev = __scsi_add_device(shost, 0, 0, sbp2_lun2int(lu->lun), lu); |
Stefan Richter | e80de37 | 2008-02-15 21:29:02 +0100 | [diff] [blame] | 939 | /* |
| 940 | * FIXME: We are unable to perform reconnects while in sbp2_login(). |
| 941 | * Therefore __scsi_add_device() will get into trouble if a bus reset |
| 942 | * happens in parallel. It will either fail or leave us with an |
| 943 | * unusable sdev. As a workaround we check for this and retry the |
| 944 | * whole login and SCSI probing. |
| 945 | */ |
Stefan Richter | 1b9c12b | 2008-01-26 17:43:23 +0100 | [diff] [blame] | 946 | |
Stefan Richter | e80de37 | 2008-02-15 21:29:02 +0100 | [diff] [blame] | 947 | /* Reported error during __scsi_add_device() */ |
| 948 | if (IS_ERR(sdev)) |
| 949 | goto out_logout_login; |
| 950 | |
Stefan Richter | e80de37 | 2008-02-15 21:29:02 +0100 | [diff] [blame] | 951 | /* Unreported error during __scsi_add_device() */ |
| 952 | smp_rmb(); /* get current card generation */ |
| 953 | if (generation != device->card->generation) { |
| 954 | scsi_remove_device(sdev); |
Stefan Richter | 33f1c6c3 | 2008-02-19 09:05:49 +0100 | [diff] [blame] | 955 | scsi_device_put(sdev); |
Stefan Richter | e80de37 | 2008-02-15 21:29:02 +0100 | [diff] [blame] | 956 | goto out_logout_login; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 957 | } |
Stefan Richter | e80de37 | 2008-02-15 21:29:02 +0100 | [diff] [blame] | 958 | |
| 959 | /* No error during __scsi_add_device() */ |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 960 | lu->has_sdev = true; |
| 961 | scsi_device_put(sdev); |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 962 | sbp2_allow_block(lu); |
Stefan Richter | e80de37 | 2008-02-15 21:29:02 +0100 | [diff] [blame] | 963 | goto out; |
| 964 | |
| 965 | out_logout_login: |
| 966 | smp_rmb(); /* generation may have changed */ |
| 967 | generation = device->generation; |
| 968 | smp_rmb(); /* node_id must not be older than generation */ |
| 969 | |
| 970 | sbp2_send_management_orb(lu, device->node_id, generation, |
| 971 | SBP2_LOGOUT_REQUEST, lu->login_id, NULL); |
| 972 | /* |
| 973 | * If a bus reset happened, sbp2_update will have requeued |
| 974 | * lu->work already. Reset the work from reconnect to login. |
| 975 | */ |
| 976 | PREPARE_DELAYED_WORK(&lu->work, sbp2_login); |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 977 | out: |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 978 | sbp2_target_put(tgt); |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 979 | } |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 980 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 981 | static int sbp2_add_logical_unit(struct sbp2_target *tgt, int lun_entry) |
| 982 | { |
| 983 | struct sbp2_logical_unit *lu; |
| 984 | |
| 985 | lu = kmalloc(sizeof(*lu), GFP_KERNEL); |
| 986 | if (!lu) |
| 987 | return -ENOMEM; |
| 988 | |
| 989 | lu->address_handler.length = 0x100; |
| 990 | lu->address_handler.address_callback = sbp2_status_write; |
| 991 | lu->address_handler.callback_data = lu; |
| 992 | |
| 993 | if (fw_core_add_address_handler(&lu->address_handler, |
| 994 | &fw_high_memory_region) < 0) { |
| 995 | kfree(lu); |
| 996 | return -ENOMEM; |
| 997 | } |
| 998 | |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 999 | lu->tgt = tgt; |
| 1000 | lu->lun = lun_entry & 0xffff; |
Jay Fenlason | cd1f70fd | 2008-10-24 15:26:20 -0400 | [diff] [blame] | 1001 | lu->login_id = INVALID_LOGIN_ID; |
Stefan Richter | f843615 | 2008-02-26 23:30:02 +0100 | [diff] [blame] | 1002 | lu->retries = 0; |
| 1003 | lu->has_sdev = false; |
| 1004 | lu->blocked = false; |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 1005 | ++tgt->dont_block; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1006 | INIT_LIST_HEAD(&lu->orb_list); |
| 1007 | INIT_DELAYED_WORK(&lu->work, sbp2_login); |
| 1008 | |
| 1009 | list_add_tail(&lu->link, &tgt->lu_list); |
| 1010 | return 0; |
| 1011 | } |
| 1012 | |
| 1013 | static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, u32 *directory) |
| 1014 | { |
| 1015 | struct fw_csr_iterator ci; |
| 1016 | int key, value; |
| 1017 | |
| 1018 | fw_csr_iterator_init(&ci, directory); |
| 1019 | while (fw_csr_iterator_next(&ci, &key, &value)) |
| 1020 | if (key == SBP2_CSR_LOGICAL_UNIT_NUMBER && |
| 1021 | sbp2_add_logical_unit(tgt, value) < 0) |
| 1022 | return -ENOMEM; |
| 1023 | return 0; |
| 1024 | } |
| 1025 | |
| 1026 | static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory, |
| 1027 | u32 *model, u32 *firmware_revision) |
| 1028 | { |
| 1029 | struct fw_csr_iterator ci; |
| 1030 | int key, value; |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 1031 | unsigned int timeout; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1032 | |
| 1033 | fw_csr_iterator_init(&ci, directory); |
| 1034 | while (fw_csr_iterator_next(&ci, &key, &value)) { |
| 1035 | switch (key) { |
| 1036 | |
| 1037 | case CSR_DEPENDENT_INFO | CSR_OFFSET: |
| 1038 | tgt->management_agent_address = |
| 1039 | CSR_REGISTER_BASE + 4 * value; |
| 1040 | break; |
| 1041 | |
| 1042 | case CSR_DIRECTORY_ID: |
| 1043 | tgt->directory_id = value; |
| 1044 | break; |
| 1045 | |
| 1046 | case CSR_MODEL: |
| 1047 | *model = value; |
| 1048 | break; |
| 1049 | |
| 1050 | case SBP2_CSR_FIRMWARE_REVISION: |
| 1051 | *firmware_revision = value; |
| 1052 | break; |
| 1053 | |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 1054 | case SBP2_CSR_UNIT_CHARACTERISTICS: |
| 1055 | /* the timeout value is stored in 500ms units */ |
| 1056 | timeout = ((unsigned int) value >> 8 & 0xff) * 500; |
| 1057 | timeout = max(timeout, SBP2_MIN_LOGIN_ORB_TIMEOUT); |
| 1058 | tgt->mgt_orb_timeout = |
| 1059 | min(timeout, SBP2_MAX_LOGIN_ORB_TIMEOUT); |
| 1060 | |
| 1061 | if (timeout > tgt->mgt_orb_timeout) |
| 1062 | fw_notify("%s: config rom contains %ds " |
| 1063 | "management ORB timeout, limiting " |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1064 | "to %ds\n", tgt->bus_id, |
Jarod Wilson | 384170d | 2008-01-25 23:31:12 -0500 | [diff] [blame] | 1065 | timeout / 1000, |
| 1066 | tgt->mgt_orb_timeout / 1000); |
| 1067 | break; |
| 1068 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1069 | case SBP2_CSR_LOGICAL_UNIT_NUMBER: |
| 1070 | if (sbp2_add_logical_unit(tgt, value) < 0) |
| 1071 | return -ENOMEM; |
| 1072 | break; |
| 1073 | |
| 1074 | case SBP2_CSR_LOGICAL_UNIT_DIRECTORY: |
Richard Sharpe | 0e3e2ea | 2008-06-24 19:11:13 -0700 | [diff] [blame] | 1075 | /* Adjust for the increment in the iterator */ |
| 1076 | if (sbp2_scan_logical_unit_dir(tgt, ci.p - 1 + value) < 0) |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1077 | return -ENOMEM; |
| 1078 | break; |
| 1079 | } |
| 1080 | } |
| 1081 | return 0; |
| 1082 | } |
| 1083 | |
| 1084 | static void sbp2_init_workarounds(struct sbp2_target *tgt, u32 model, |
| 1085 | u32 firmware_revision) |
| 1086 | { |
| 1087 | int i; |
Stefan Richter | 05cca738 | 2008-01-26 17:42:45 +0100 | [diff] [blame] | 1088 | unsigned int w = sbp2_param_workarounds; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1089 | |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 1090 | if (w) |
| 1091 | fw_notify("Please notify linux1394-devel@lists.sourceforge.net " |
| 1092 | "if you need the workarounds parameter for %s\n", |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1093 | tgt->bus_id); |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 1094 | |
| 1095 | if (w & SBP2_WORKAROUND_OVERRIDE) |
| 1096 | goto out; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1097 | |
| 1098 | for (i = 0; i < ARRAY_SIZE(sbp2_workarounds_table); i++) { |
| 1099 | |
| 1100 | if (sbp2_workarounds_table[i].firmware_revision != |
| 1101 | (firmware_revision & 0xffffff00)) |
| 1102 | continue; |
| 1103 | |
| 1104 | if (sbp2_workarounds_table[i].model != model && |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 1105 | sbp2_workarounds_table[i].model != SBP2_ROM_VALUE_WILDCARD) |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1106 | continue; |
| 1107 | |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 1108 | w |= sbp2_workarounds_table[i].workarounds; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1109 | break; |
| 1110 | } |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 1111 | out: |
| 1112 | if (w) |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1113 | fw_notify("Workarounds for %s: 0x%x " |
| 1114 | "(firmware_revision 0x%06x, model_id 0x%06x)\n", |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1115 | tgt->bus_id, w, firmware_revision, model); |
Stefan Richter | 2df222b | 2007-08-13 17:48:25 +0200 | [diff] [blame] | 1116 | tgt->workarounds = w; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | static struct scsi_host_template scsi_driver_template; |
| 1120 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1121 | static int sbp2_probe(struct device *dev) |
| 1122 | { |
| 1123 | struct fw_unit *unit = fw_unit(dev); |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 1124 | struct fw_device *device = fw_parent_device(unit); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1125 | struct sbp2_target *tgt; |
| 1126 | struct sbp2_logical_unit *lu; |
| 1127 | struct Scsi_Host *shost; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1128 | u32 model, firmware_revision; |
| 1129 | |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1130 | if (dma_get_max_seg_size(device->card->device) > SBP2_MAX_SEG_SIZE) |
| 1131 | BUG_ON(dma_set_max_seg_size(device->card->device, |
| 1132 | SBP2_MAX_SEG_SIZE)); |
| 1133 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1134 | shost = scsi_host_alloc(&scsi_driver_template, sizeof(*tgt)); |
| 1135 | if (shost == NULL) |
| 1136 | return -ENOMEM; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1137 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1138 | tgt = (struct sbp2_target *)shost->hostdata; |
Greg Kroah-Hartman | d961450 | 2009-04-30 14:43:31 -0700 | [diff] [blame] | 1139 | dev_set_drvdata(&unit->device, tgt); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1140 | tgt->unit = unit; |
| 1141 | kref_init(&tgt->kref); |
| 1142 | INIT_LIST_HEAD(&tgt->lu_list); |
Kay Sievers | a1f6481 | 2008-10-30 01:41:56 +0100 | [diff] [blame] | 1143 | tgt->bus_id = dev_name(&unit->device); |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 1144 | tgt->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4]; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1145 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1146 | if (fw_device_enable_phys_dma(device) < 0) |
| 1147 | goto fail_shost_put; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1148 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1149 | if (scsi_add_host(shost, &unit->device) < 0) |
| 1150 | goto fail_shost_put; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1151 | |
Stefan Richter | 855c603 | 2008-02-27 22:14:27 +0100 | [diff] [blame] | 1152 | fw_device_get(device); |
Stefan Richter | 1dc3bea | 2008-02-24 19:01:21 +0100 | [diff] [blame] | 1153 | fw_unit_get(unit); |
Stefan Richter | 855c603 | 2008-02-27 22:14:27 +0100 | [diff] [blame] | 1154 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1155 | /* implicit directory ID */ |
| 1156 | tgt->directory_id = ((unit->directory - device->config_rom) * 4 |
| 1157 | + CSR_CONFIG_ROM) & 0xffffff; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1158 | |
Stefan Richter | f746072 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 1159 | firmware_revision = SBP2_ROM_VALUE_MISSING; |
| 1160 | model = SBP2_ROM_VALUE_MISSING; |
| 1161 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1162 | if (sbp2_scan_unit_dir(tgt, unit->directory, &model, |
| 1163 | &firmware_revision) < 0) |
| 1164 | goto fail_tgt_put; |
| 1165 | |
| 1166 | sbp2_init_workarounds(tgt, model, firmware_revision); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1167 | |
Stefan Richter | a08e100 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 1168 | /* |
| 1169 | * At S100 we can do 512 bytes per packet, at S200 1024 bytes, |
| 1170 | * and so on up to 4096 bytes. The SBP-2 max_payload field |
| 1171 | * specifies the max payload size as 2 ^ (max_payload + 2), so |
| 1172 | * if we set this to max_speed + 7, we get the right value. |
| 1173 | */ |
| 1174 | tgt->max_payload = min(device->max_speed + 7, 10U); |
| 1175 | tgt->max_payload = min(tgt->max_payload, device->card->max_receive - 1); |
| 1176 | |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 1177 | /* Do the login in a workqueue so we can easily reschedule retries. */ |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1178 | list_for_each_entry(lu, &tgt->lu_list, link) |
Stefan Richter | 0dcfeb7 | 2008-10-22 00:28:36 +0200 | [diff] [blame] | 1179 | sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5)); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1180 | return 0; |
Kristian Høgsberg | ad85274 | 2007-05-09 19:23:07 -0400 | [diff] [blame] | 1181 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1182 | fail_tgt_put: |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 1183 | sbp2_target_put(tgt); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1184 | return -ENOMEM; |
| 1185 | |
| 1186 | fail_shost_put: |
| 1187 | scsi_host_put(shost); |
| 1188 | return -ENOMEM; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1189 | } |
| 1190 | |
| 1191 | static int sbp2_remove(struct device *dev) |
| 1192 | { |
| 1193 | struct fw_unit *unit = fw_unit(dev); |
Greg Kroah-Hartman | d961450 | 2009-04-30 14:43:31 -0700 | [diff] [blame] | 1194 | struct sbp2_target *tgt = dev_get_drvdata(&unit->device); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1195 | |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 1196 | sbp2_target_put(tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | static void sbp2_reconnect(struct work_struct *work) |
| 1201 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1202 | struct sbp2_logical_unit *lu = |
| 1203 | container_of(work, struct sbp2_logical_unit, work.work); |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1204 | struct sbp2_target *tgt = lu->tgt; |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 1205 | struct fw_device *device = target_device(tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1206 | int generation, node_id, local_node_id; |
| 1207 | |
Stefan Richter | be6f48b | 2008-01-27 19:14:44 +0100 | [diff] [blame] | 1208 | if (fw_device_is_shutdown(device)) |
| 1209 | goto out; |
| 1210 | |
Stefan Richter | 5a8a1bc | 2008-01-24 01:53:19 +0100 | [diff] [blame] | 1211 | generation = device->generation; |
Stefan Richter | 621f6dd | 2008-10-26 11:04:20 +0100 | [diff] [blame] | 1212 | smp_rmb(); /* node IDs must not be older than generation */ |
Stefan Richter | 5a8a1bc | 2008-01-24 01:53:19 +0100 | [diff] [blame] | 1213 | node_id = device->node_id; |
| 1214 | local_node_id = device->card->node_id; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1215 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1216 | if (sbp2_send_management_orb(lu, node_id, generation, |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 1217 | SBP2_RECONNECT_REQUEST, |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1218 | lu->login_id, NULL) < 0) { |
Stefan Richter | ce896d9 | 2008-02-03 23:11:39 +0100 | [diff] [blame] | 1219 | /* |
| 1220 | * If reconnect was impossible even though we are in the |
| 1221 | * current generation, fall back and try to log in again. |
| 1222 | * |
| 1223 | * We could check for "Function rejected" status, but |
| 1224 | * looking at the bus generation as simpler and more general. |
| 1225 | */ |
| 1226 | smp_rmb(); /* get current card generation */ |
| 1227 | if (generation == device->card->generation || |
| 1228 | lu->retries++ >= 5) { |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1229 | fw_error("%s: failed to reconnect\n", tgt->bus_id); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1230 | lu->retries = 0; |
| 1231 | PREPARE_DELAYED_WORK(&lu->work, sbp2_login); |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 1232 | } |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 1233 | sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5)); |
| 1234 | goto out; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 1235 | } |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1236 | |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1237 | tgt->node_id = node_id; |
| 1238 | tgt->address_high = local_node_id << 16; |
Stefan Richter | 621f6dd | 2008-10-26 11:04:20 +0100 | [diff] [blame] | 1239 | smp_wmb(); /* node IDs must not be older than generation */ |
| 1240 | lu->generation = generation; |
Kristian Høgsberg | 7f37c42 | 2007-02-06 14:49:34 -0500 | [diff] [blame] | 1241 | |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1242 | fw_notify("%s: reconnected to LUN %04x (%d retries)\n", |
| 1243 | tgt->bus_id, lu->lun, lu->retries); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1244 | |
| 1245 | sbp2_agent_reset(lu); |
| 1246 | sbp2_cancel_orbs(lu); |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 1247 | sbp2_conditionally_unblock(lu); |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 1248 | out: |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1249 | sbp2_target_put(tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1250 | } |
| 1251 | |
| 1252 | static void sbp2_update(struct fw_unit *unit) |
| 1253 | { |
Greg Kroah-Hartman | d961450 | 2009-04-30 14:43:31 -0700 | [diff] [blame] | 1254 | struct sbp2_target *tgt = dev_get_drvdata(&unit->device); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1255 | struct sbp2_logical_unit *lu; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1256 | |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 1257 | fw_device_enable_phys_dma(fw_parent_device(unit)); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1258 | |
| 1259 | /* |
| 1260 | * Fw-core serializes sbp2_update() against sbp2_remove(). |
| 1261 | * Iteration over tgt->lu_list is therefore safe here. |
| 1262 | */ |
| 1263 | list_for_each_entry(lu, &tgt->lu_list, link) { |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 1264 | sbp2_conditionally_block(lu); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1265 | lu->retries = 0; |
Stefan Richter | 285838e | 2007-11-07 01:12:51 +0100 | [diff] [blame] | 1266 | sbp2_queue_work(lu, 0); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1267 | } |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | #define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e |
| 1271 | #define SBP2_SW_VERSION_ENTRY 0x00010483 |
| 1272 | |
Stefan Richter | b3b2988 | 2009-02-15 23:12:34 +0100 | [diff] [blame] | 1273 | static const struct ieee1394_device_id sbp2_id_table[] = { |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1274 | { |
Stefan Richter | b3b2988 | 2009-02-15 23:12:34 +0100 | [diff] [blame] | 1275 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | |
| 1276 | IEEE1394_MATCH_VERSION, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1277 | .specifier_id = SBP2_UNIT_SPEC_ID_ENTRY, |
Stefan Richter | 5af4e5e | 2007-01-21 20:45:32 +0100 | [diff] [blame] | 1278 | .version = SBP2_SW_VERSION_ENTRY, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1279 | }, |
| 1280 | { } |
| 1281 | }; |
| 1282 | |
| 1283 | static struct fw_driver sbp2_driver = { |
| 1284 | .driver = { |
| 1285 | .owner = THIS_MODULE, |
| 1286 | .name = sbp2_driver_name, |
| 1287 | .bus = &fw_bus_type, |
| 1288 | .probe = sbp2_probe, |
| 1289 | .remove = sbp2_remove, |
| 1290 | }, |
| 1291 | .update = sbp2_update, |
| 1292 | .id_table = sbp2_id_table, |
| 1293 | }; |
| 1294 | |
Stefan Richter | 5e21256 | 2009-01-28 01:03:34 +0100 | [diff] [blame] | 1295 | static void sbp2_unmap_scatterlist(struct device *card_device, |
| 1296 | struct sbp2_command_orb *orb) |
| 1297 | { |
| 1298 | if (scsi_sg_count(orb->cmd)) |
| 1299 | dma_unmap_sg(card_device, scsi_sglist(orb->cmd), |
| 1300 | scsi_sg_count(orb->cmd), |
| 1301 | orb->cmd->sc_data_direction); |
| 1302 | |
| 1303 | if (orb->request.misc & cpu_to_be32(COMMAND_ORB_PAGE_TABLE_PRESENT)) |
| 1304 | dma_unmap_single(card_device, orb->page_table_bus, |
| 1305 | sizeof(orb->page_table), DMA_TO_DEVICE); |
| 1306 | } |
| 1307 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1308 | static unsigned int sbp2_status_to_sense_data(u8 *sbp2_status, u8 *sense_data) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1309 | { |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1310 | int sam_status; |
| 1311 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1312 | sense_data[0] = 0x70; |
| 1313 | sense_data[1] = 0x0; |
| 1314 | sense_data[2] = sbp2_status[1]; |
| 1315 | sense_data[3] = sbp2_status[4]; |
| 1316 | sense_data[4] = sbp2_status[5]; |
| 1317 | sense_data[5] = sbp2_status[6]; |
| 1318 | sense_data[6] = sbp2_status[7]; |
| 1319 | sense_data[7] = 10; |
| 1320 | sense_data[8] = sbp2_status[8]; |
| 1321 | sense_data[9] = sbp2_status[9]; |
| 1322 | sense_data[10] = sbp2_status[10]; |
| 1323 | sense_data[11] = sbp2_status[11]; |
| 1324 | sense_data[12] = sbp2_status[2]; |
| 1325 | sense_data[13] = sbp2_status[3]; |
| 1326 | sense_data[14] = sbp2_status[12]; |
| 1327 | sense_data[15] = sbp2_status[13]; |
| 1328 | |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1329 | sam_status = sbp2_status[0] & 0x3f; |
| 1330 | |
| 1331 | switch (sam_status) { |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1332 | case SAM_STAT_GOOD: |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1333 | case SAM_STAT_CHECK_CONDITION: |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1334 | case SAM_STAT_CONDITION_MET: |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1335 | case SAM_STAT_BUSY: |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1336 | case SAM_STAT_RESERVATION_CONFLICT: |
| 1337 | case SAM_STAT_COMMAND_TERMINATED: |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1338 | return DID_OK << 16 | sam_status; |
| 1339 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1340 | default: |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1341 | return DID_ERROR << 16; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1342 | } |
| 1343 | } |
| 1344 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1345 | static void complete_command_orb(struct sbp2_orb *base_orb, |
| 1346 | struct sbp2_status *status) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1347 | { |
Jay Fenlason | 6f06148 | 2007-06-27 16:04:33 -0400 | [diff] [blame] | 1348 | struct sbp2_command_orb *orb = |
| 1349 | container_of(base_orb, struct sbp2_command_orb, base); |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 1350 | struct fw_device *device = target_device(orb->lu->tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1351 | int result; |
| 1352 | |
| 1353 | if (status != NULL) { |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 1354 | if (STATUS_GET_DEAD(*status)) |
Stefan Richter | e0e6021 | 2008-02-03 23:08:58 +0100 | [diff] [blame] | 1355 | sbp2_agent_reset_no_wait(orb->lu); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1356 | |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 1357 | switch (STATUS_GET_RESPONSE(*status)) { |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1358 | case SBP2_STATUS_REQUEST_COMPLETE: |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1359 | result = DID_OK << 16; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1360 | break; |
| 1361 | case SBP2_STATUS_TRANSPORT_FAILURE: |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1362 | result = DID_BUS_BUSY << 16; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1363 | break; |
| 1364 | case SBP2_STATUS_ILLEGAL_REQUEST: |
| 1365 | case SBP2_STATUS_VENDOR_DEPENDENT: |
| 1366 | default: |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1367 | result = DID_ERROR << 16; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1368 | break; |
| 1369 | } |
| 1370 | |
Kristian Høgsberg | a77754a | 2007-05-07 20:33:35 -0400 | [diff] [blame] | 1371 | if (result == DID_OK << 16 && STATUS_GET_LEN(*status) > 1) |
| 1372 | result = sbp2_status_to_sense_data(STATUS_GET_DATA(*status), |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1373 | orb->cmd->sense_buffer); |
| 1374 | } else { |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1375 | /* |
| 1376 | * If the orb completes with status == NULL, something |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1377 | * went wrong, typically a bus reset happened mid-orb |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1378 | * or when sending the write (less likely). |
| 1379 | */ |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1380 | result = DID_BUS_BUSY << 16; |
Stefan Richter | 2e2705b | 2008-02-16 16:37:28 +0100 | [diff] [blame] | 1381 | sbp2_conditionally_block(orb->lu); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1382 | } |
| 1383 | |
| 1384 | dma_unmap_single(device->card->device, orb->base.request_bus, |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 1385 | sizeof(orb->request), DMA_TO_DEVICE); |
Stefan Richter | 5e21256 | 2009-01-28 01:03:34 +0100 | [diff] [blame] | 1386 | sbp2_unmap_scatterlist(device->card->device, orb); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1387 | |
Kristian Høgsberg | fbb5423 | 2007-04-10 18:11:18 -0400 | [diff] [blame] | 1388 | orb->cmd->result = result; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1389 | orb->done(orb->cmd); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1390 | } |
| 1391 | |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1392 | static int sbp2_map_scatterlist(struct sbp2_command_orb *orb, |
| 1393 | struct fw_device *device, struct sbp2_logical_unit *lu) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1394 | { |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1395 | struct scatterlist *sg = scsi_sglist(orb->cmd); |
| 1396 | int i, n; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1397 | |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1398 | n = dma_map_sg(device->card->device, sg, scsi_sg_count(orb->cmd), |
| 1399 | orb->cmd->sc_data_direction); |
| 1400 | if (n == 0) |
Kristian Høgsberg | 95ffc5e | 2007-05-09 19:23:08 -0400 | [diff] [blame] | 1401 | goto fail; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1402 | |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1403 | /* |
| 1404 | * Handle the special case where there is only one element in |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1405 | * the scatter list by converting it to an immediate block |
| 1406 | * request. This is also a workaround for broken devices such |
| 1407 | * as the second generation iPod which doesn't support page |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1408 | * tables. |
| 1409 | */ |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1410 | if (n == 1) { |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 1411 | orb->request.data_descriptor.high = |
| 1412 | cpu_to_be32(lu->tgt->address_high); |
| 1413 | orb->request.data_descriptor.low = |
| 1414 | cpu_to_be32(sg_dma_address(sg)); |
| 1415 | orb->request.misc |= |
| 1416 | cpu_to_be32(COMMAND_ORB_DATA_SIZE(sg_dma_len(sg))); |
Kristian Høgsberg | 95ffc5e | 2007-05-09 19:23:08 -0400 | [diff] [blame] | 1417 | return 0; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1418 | } |
| 1419 | |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1420 | for_each_sg(sg, sg, n, i) { |
| 1421 | orb->page_table[i].high = cpu_to_be32(sg_dma_len(sg) << 16); |
| 1422 | orb->page_table[i].low = cpu_to_be32(sg_dma_address(sg)); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1423 | } |
| 1424 | |
Stefan Richter | b4be016 | 2007-07-02 22:07:34 +0200 | [diff] [blame] | 1425 | orb->page_table_bus = |
| 1426 | dma_map_single(device->card->device, orb->page_table, |
| 1427 | sizeof(orb->page_table), DMA_TO_DEVICE); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 1428 | if (dma_mapping_error(device->card->device, orb->page_table_bus)) |
Stefan Richter | b4be016 | 2007-07-02 22:07:34 +0200 | [diff] [blame] | 1429 | goto fail_page_table; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1430 | |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1431 | /* |
| 1432 | * The data_descriptor pointer is the one case where we need |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1433 | * to fill in the node ID part of the address. All other |
| 1434 | * pointers assume that the data referenced reside on the |
| 1435 | * initiator (i.e. us), but data_descriptor can refer to data |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1436 | * on other nodes so we need to put our ID in descriptor.high. |
| 1437 | */ |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 1438 | orb->request.data_descriptor.high = cpu_to_be32(lu->tgt->address_high); |
| 1439 | orb->request.data_descriptor.low = cpu_to_be32(orb->page_table_bus); |
| 1440 | orb->request.misc |= cpu_to_be32(COMMAND_ORB_PAGE_TABLE_PRESENT | |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1441 | COMMAND_ORB_DATA_SIZE(n)); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1442 | |
Kristian Høgsberg | 95ffc5e | 2007-05-09 19:23:08 -0400 | [diff] [blame] | 1443 | return 0; |
| 1444 | |
| 1445 | fail_page_table: |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1446 | dma_unmap_sg(device->card->device, scsi_sglist(orb->cmd), |
| 1447 | scsi_sg_count(orb->cmd), orb->cmd->sc_data_direction); |
Kristian Høgsberg | 95ffc5e | 2007-05-09 19:23:08 -0400 | [diff] [blame] | 1448 | fail: |
| 1449 | return -ENOMEM; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1450 | } |
| 1451 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1452 | /* SCSI stack integration */ |
| 1453 | |
| 1454 | static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done) |
| 1455 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1456 | struct sbp2_logical_unit *lu = cmd->device->hostdata; |
Stefan Richter | e5110d0 | 2009-06-06 18:35:27 +0200 | [diff] [blame] | 1457 | struct fw_device *device = target_device(lu->tgt); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1458 | struct sbp2_command_orb *orb; |
Stefan Richter | 4bbc1bd | 2008-08-09 20:22:17 +0200 | [diff] [blame] | 1459 | int generation, retval = SCSI_MLQUEUE_HOST_BUSY; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1460 | |
Kristian Høgsberg | c781c06 | 2007-05-07 20:33:32 -0400 | [diff] [blame] | 1461 | /* |
| 1462 | * Bidirectional commands are not yet implemented, and unknown |
| 1463 | * transfer direction not handled. |
| 1464 | */ |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1465 | if (cmd->sc_data_direction == DMA_BIDIRECTIONAL) { |
Stefan Richter | 8a8cea2 | 2007-06-09 19:26:22 +0200 | [diff] [blame] | 1466 | fw_error("Can't handle DMA_BIDIRECTIONAL, rejecting command\n"); |
Kristian Høgsberg | e1b68c4 | 2007-05-09 19:23:09 -0400 | [diff] [blame] | 1467 | cmd->result = DID_ERROR << 16; |
| 1468 | done(cmd); |
| 1469 | return 0; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1470 | } |
| 1471 | |
Kristian Høgsberg | 2d826cc | 2007-05-09 19:23:14 -0400 | [diff] [blame] | 1472 | orb = kzalloc(sizeof(*orb), GFP_ATOMIC); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1473 | if (orb == NULL) { |
| 1474 | fw_notify("failed to alloc orb\n"); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1475 | return SCSI_MLQUEUE_HOST_BUSY; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1476 | } |
| 1477 | |
Kristian Høgsberg | 12f26aa | 2007-04-10 18:11:20 -0400 | [diff] [blame] | 1478 | /* Initialize rcode to something not RCODE_COMPLETE. */ |
| 1479 | orb->base.rcode = -1; |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 1480 | kref_init(&orb->base.kref); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1481 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1482 | orb->lu = lu; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1483 | orb->done = done; |
| 1484 | orb->cmd = cmd; |
| 1485 | |
Stefan Richter | a08e100 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 1486 | orb->request.next.high = cpu_to_be32(SBP2_ORB_NULL); |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 1487 | orb->request.misc = cpu_to_be32( |
Stefan Richter | a08e100 | 2009-01-24 19:41:46 +0100 | [diff] [blame] | 1488 | COMMAND_ORB_MAX_PAYLOAD(lu->tgt->max_payload) | |
Stefan Richter | f139749 | 2007-06-10 21:31:36 +0200 | [diff] [blame] | 1489 | COMMAND_ORB_SPEED(device->max_speed) | |
Stefan Richter | 71ee9f0 | 2008-02-28 20:51:11 +0100 | [diff] [blame] | 1490 | COMMAND_ORB_NOTIFY); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1491 | |
| 1492 | if (cmd->sc_data_direction == DMA_FROM_DEVICE) |
Stefan Richter | 0d7dcbf | 2008-02-28 20:52:02 +0100 | [diff] [blame] | 1493 | orb->request.misc |= cpu_to_be32(COMMAND_ORB_DIRECTION); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1494 | |
Stefan Richter | 4bbc1bd | 2008-08-09 20:22:17 +0200 | [diff] [blame] | 1495 | generation = device->generation; |
| 1496 | smp_rmb(); /* sbp2_map_scatterlist looks at tgt->address_high */ |
| 1497 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1498 | if (scsi_sg_count(cmd) && sbp2_map_scatterlist(orb, device, lu) < 0) |
| 1499 | goto out; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1500 | |
Boaz Harrosh | 64a87b2 | 2008-04-30 11:19:47 +0300 | [diff] [blame] | 1501 | memcpy(orb->request.command_block, cmd->cmnd, cmd->cmd_len); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1502 | |
| 1503 | orb->base.callback = complete_command_orb; |
Stefan Richter | 8526392 | 2007-07-02 21:04:08 +0200 | [diff] [blame] | 1504 | orb->base.request_bus = |
| 1505 | dma_map_single(device->card->device, &orb->request, |
| 1506 | sizeof(orb->request), DMA_TO_DEVICE); |
Stefan Richter | 5e21256 | 2009-01-28 01:03:34 +0100 | [diff] [blame] | 1507 | if (dma_mapping_error(device->card->device, orb->base.request_bus)) { |
| 1508 | sbp2_unmap_scatterlist(device->card->device, orb); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1509 | goto out; |
Stefan Richter | 5e21256 | 2009-01-28 01:03:34 +0100 | [diff] [blame] | 1510 | } |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1511 | |
Stefan Richter | 4bbc1bd | 2008-08-09 20:22:17 +0200 | [diff] [blame] | 1512 | sbp2_send_orb(&orb->base, lu, lu->tgt->node_id, generation, |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1513 | lu->command_block_agent_address + SBP2_ORB_POINTER); |
| 1514 | retval = 0; |
| 1515 | out: |
Kristian Høgsberg | e57d201 | 2007-08-24 18:59:58 -0400 | [diff] [blame] | 1516 | kref_put(&orb->base.kref, free_orb); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1517 | return retval; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1518 | } |
| 1519 | |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1520 | static int sbp2_scsi_slave_alloc(struct scsi_device *sdev) |
| 1521 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1522 | struct sbp2_logical_unit *lu = sdev->hostdata; |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1523 | |
Stefan Richter | 5513c5f | 2008-02-17 14:56:19 +0100 | [diff] [blame] | 1524 | /* (Re-)Adding logical units via the SCSI stack is not supported. */ |
| 1525 | if (!lu) |
| 1526 | return -ENOSYS; |
| 1527 | |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1528 | sdev->allow_restart = 1; |
| 1529 | |
Stefan Richter | 8ac3a47 | 2008-01-27 22:31:27 +0100 | [diff] [blame] | 1530 | /* SBP-2 requires quadlet alignment of the data buffers. */ |
| 1531 | blk_queue_update_dma_alignment(sdev->request_queue, 4 - 1); |
James Bottomley | 465ff31 | 2008-01-01 10:00:10 -0600 | [diff] [blame] | 1532 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1533 | if (lu->tgt->workarounds & SBP2_WORKAROUND_INQUIRY_36) |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1534 | sdev->inquiry_len = 36; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1535 | |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1536 | return 0; |
| 1537 | } |
| 1538 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1539 | static int sbp2_scsi_slave_configure(struct scsi_device *sdev) |
| 1540 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1541 | struct sbp2_logical_unit *lu = sdev->hostdata; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1542 | |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1543 | sdev->use_10_for_rw = 1; |
| 1544 | |
Stefan Richter | 2635f96 | 2008-05-11 00:36:47 +0200 | [diff] [blame] | 1545 | if (sbp2_param_exclusive_login) |
| 1546 | sdev->manage_start_stop = 1; |
| 1547 | |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1548 | if (sdev->type == TYPE_ROM) |
| 1549 | sdev->use_10_for_ms = 1; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1550 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1551 | if (sdev->type == TYPE_DISK && |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1552 | lu->tgt->workarounds & SBP2_WORKAROUND_MODE_SENSE_8) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1553 | sdev->skip_ms_page_8 = 1; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1554 | |
| 1555 | if (lu->tgt->workarounds & SBP2_WORKAROUND_FIX_CAPACITY) |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1556 | sdev->fix_capacity = 1; |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1557 | |
Stefan Richter | ffcaade | 2008-05-11 00:35:04 +0200 | [diff] [blame] | 1558 | if (lu->tgt->workarounds & SBP2_WORKAROUND_POWER_CONDITION) |
| 1559 | sdev->start_stop_pwr_cond = 1; |
| 1560 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1561 | if (lu->tgt->workarounds & SBP2_WORKAROUND_128K_MAX_TRANS) |
Stefan Richter | cf47c7a | 2007-06-17 23:52:08 +0200 | [diff] [blame] | 1562 | blk_queue_max_sectors(sdev->request_queue, 128 * 1024 / 512); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1563 | |
Stefan Richter | 09b12dd | 2008-08-14 21:47:21 +0200 | [diff] [blame] | 1564 | blk_queue_max_segment_size(sdev->request_queue, SBP2_MAX_SEG_SIZE); |
| 1565 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1566 | return 0; |
| 1567 | } |
| 1568 | |
| 1569 | /* |
| 1570 | * Called by scsi stack when something has really gone wrong. Usually |
| 1571 | * called when a command has timed-out for some reason. |
| 1572 | */ |
| 1573 | static int sbp2_scsi_abort(struct scsi_cmnd *cmd) |
| 1574 | { |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1575 | struct sbp2_logical_unit *lu = cmd->device->hostdata; |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1576 | |
Stefan Richter | 48f18c7 | 2008-02-03 23:09:50 +0100 | [diff] [blame] | 1577 | fw_notify("%s: sbp2_scsi_abort\n", lu->tgt->bus_id); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1578 | sbp2_agent_reset(lu); |
| 1579 | sbp2_cancel_orbs(lu); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1580 | |
| 1581 | return SUCCESS; |
| 1582 | } |
| 1583 | |
Stefan Richter | 14e2198 | 2007-05-27 13:18:27 +0200 | [diff] [blame] | 1584 | /* |
| 1585 | * Format of /sys/bus/scsi/devices/.../ieee1394_id: |
| 1586 | * u64 EUI-64 : u24 directory_ID : u16 LUN (all printed in hexadecimal) |
| 1587 | * |
| 1588 | * This is the concatenation of target port identifier and logical unit |
| 1589 | * identifier as per SAM-2...SAM-4 annex A. |
| 1590 | */ |
Stefan Richter | 53dca51 | 2008-12-14 21:47:04 +0100 | [diff] [blame] | 1591 | static ssize_t sbp2_sysfs_ieee1394_id_show(struct device *dev, |
| 1592 | struct device_attribute *attr, char *buf) |
Stefan Richter | 14e2198 | 2007-05-27 13:18:27 +0200 | [diff] [blame] | 1593 | { |
| 1594 | struct scsi_device *sdev = to_scsi_device(dev); |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1595 | struct sbp2_logical_unit *lu; |
Stefan Richter | 14e2198 | 2007-05-27 13:18:27 +0200 | [diff] [blame] | 1596 | |
| 1597 | if (!sdev) |
| 1598 | return 0; |
Stefan Richter | 14e2198 | 2007-05-27 13:18:27 +0200 | [diff] [blame] | 1599 | |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1600 | lu = sdev->hostdata; |
Stefan Richter | 14e2198 | 2007-05-27 13:18:27 +0200 | [diff] [blame] | 1601 | |
Stefan Richter | c9755e1 | 2008-03-24 20:54:28 +0100 | [diff] [blame] | 1602 | return sprintf(buf, "%016llx:%06x:%04x\n", |
| 1603 | (unsigned long long)lu->tgt->guid, |
Stefan Richter | 5a3c2be | 2007-08-25 14:05:28 +0200 | [diff] [blame] | 1604 | lu->tgt->directory_id, lu->lun); |
Stefan Richter | 14e2198 | 2007-05-27 13:18:27 +0200 | [diff] [blame] | 1605 | } |
| 1606 | |
| 1607 | static DEVICE_ATTR(ieee1394_id, S_IRUGO, sbp2_sysfs_ieee1394_id_show, NULL); |
| 1608 | |
| 1609 | static struct device_attribute *sbp2_scsi_sysfs_attrs[] = { |
| 1610 | &dev_attr_ieee1394_id, |
| 1611 | NULL |
| 1612 | }; |
| 1613 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1614 | static struct scsi_host_template scsi_driver_template = { |
| 1615 | .module = THIS_MODULE, |
| 1616 | .name = "SBP-2 IEEE-1394", |
Kristian Høgsberg | b02b6bc | 2007-05-09 19:23:12 -0400 | [diff] [blame] | 1617 | .proc_name = sbp2_driver_name, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1618 | .queuecommand = sbp2_scsi_queuecommand, |
Stefan Richter | cfb0138 | 2007-01-23 21:20:08 +0100 | [diff] [blame] | 1619 | .slave_alloc = sbp2_scsi_slave_alloc, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1620 | .slave_configure = sbp2_scsi_slave_configure, |
| 1621 | .eh_abort_handler = sbp2_scsi_abort, |
| 1622 | .this_id = -1, |
| 1623 | .sg_tablesize = SG_ALL, |
| 1624 | .use_clustering = ENABLE_CLUSTERING, |
Stefan Richter | 02af8e7 | 2007-01-21 20:50:11 +0100 | [diff] [blame] | 1625 | .cmd_per_lun = 1, |
| 1626 | .can_queue = 1, |
Stefan Richter | 14e2198 | 2007-05-27 13:18:27 +0200 | [diff] [blame] | 1627 | .sdev_attrs = sbp2_scsi_sysfs_attrs, |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1628 | }; |
| 1629 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1630 | MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>"); |
| 1631 | MODULE_DESCRIPTION("SCSI over IEEE1394"); |
| 1632 | MODULE_LICENSE("GPL"); |
| 1633 | MODULE_DEVICE_TABLE(ieee1394, sbp2_id_table); |
| 1634 | |
Olaf Hering | 1e4c7b0 | 2007-05-05 23:17:13 +0200 | [diff] [blame] | 1635 | /* Provide a module alias so root-on-sbp2 initrds don't break. */ |
| 1636 | #ifndef CONFIG_IEEE1394_SBP2_MODULE |
| 1637 | MODULE_ALIAS("sbp2"); |
| 1638 | #endif |
| 1639 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1640 | static int __init sbp2_init(void) |
| 1641 | { |
Stefan Richter | df8ec24 | 2007-08-12 12:51:18 +0200 | [diff] [blame] | 1642 | sbp2_wq = create_singlethread_workqueue(KBUILD_MODNAME); |
| 1643 | if (!sbp2_wq) |
| 1644 | return -ENOMEM; |
| 1645 | |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1646 | return driver_register(&sbp2_driver.driver); |
| 1647 | } |
| 1648 | |
| 1649 | static void __exit sbp2_cleanup(void) |
| 1650 | { |
| 1651 | driver_unregister(&sbp2_driver.driver); |
Stefan Richter | df8ec24 | 2007-08-12 12:51:18 +0200 | [diff] [blame] | 1652 | destroy_workqueue(sbp2_wq); |
Kristian Høgsberg | 9ba136d | 2006-12-19 19:58:40 -0500 | [diff] [blame] | 1653 | } |
| 1654 | |
| 1655 | module_init(sbp2_init); |
| 1656 | module_exit(sbp2_cleanup); |