blob: 1b16d6b9cf11a0f55e291a7bbe064687b8d12ede [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * sbp2.h - Defines and prototypes for sbp2.c
3 *
4 * Copyright (C) 2000 James Goodwin, Filanet Corporation (www.filanet.com)
5 * jamesg@filanet.com
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software Foundation,
19 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 */
21
22#ifndef SBP2_H
23#define SBP2_H
24
25#define SBP2_DEVICE_NAME "sbp2"
26
27/*
28 * SBP2 specific structures and defines
29 */
30
31#define ORB_DIRECTION_WRITE_TO_MEDIA 0x0
32#define ORB_DIRECTION_READ_FROM_MEDIA 0x1
33#define ORB_DIRECTION_NO_DATA_TRANSFER 0x2
34
35#define ORB_SET_NULL_PTR(value) ((value & 0x1) << 31)
Stefan Richter35bdddb2006-01-31 00:13:33 -050036#define ORB_SET_NOTIFY(value) ((value & 0x1) << 31)
37#define ORB_SET_RQ_FMT(value) ((value & 0x3) << 29) /* unused ? */
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#define ORB_SET_NODE_ID(value) ((value & 0xffff) << 16)
Stefan Richter35bdddb2006-01-31 00:13:33 -050039#define ORB_SET_STATUS_FIFO_HI(value, id) (value >> 32 | ORB_SET_NODE_ID(id))
40#define ORB_SET_STATUS_FIFO_LO(value) (value & 0xffffffff)
41#define ORB_SET_DATA_SIZE(value) (value & 0xffff)
42#define ORB_SET_PAGE_SIZE(value) ((value & 0x7) << 16)
43#define ORB_SET_PAGE_TABLE_PRESENT(value) ((value & 0x1) << 19)
44#define ORB_SET_MAX_PAYLOAD(value) ((value & 0xf) << 20)
45#define ORB_SET_SPEED(value) ((value & 0x7) << 24)
46#define ORB_SET_DIRECTION(value) ((value & 0x1) << 27)
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
48struct sbp2_command_orb {
Stefan Richtercc078182006-07-23 22:12:00 +020049 u32 next_ORB_hi;
50 u32 next_ORB_lo;
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 u32 data_descriptor_hi;
52 u32 data_descriptor_lo;
53 u32 misc;
54 u8 cdb[12];
Ben Collins05db5052006-06-12 18:14:47 -040055} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57#define SBP2_LOGIN_REQUEST 0x0
58#define SBP2_QUERY_LOGINS_REQUEST 0x1
59#define SBP2_RECONNECT_REQUEST 0x3
60#define SBP2_SET_PASSWORD_REQUEST 0x4
61#define SBP2_LOGOUT_REQUEST 0x7
62#define SBP2_ABORT_TASK_REQUEST 0xb
63#define SBP2_ABORT_TASK_SET 0xc
64#define SBP2_LOGICAL_UNIT_RESET 0xe
65#define SBP2_TARGET_RESET_REQUEST 0xf
66
67#define ORB_SET_LUN(value) (value & 0xffff)
68#define ORB_SET_FUNCTION(value) ((value & 0xf) << 16)
69#define ORB_SET_RECONNECT(value) ((value & 0xf) << 20)
70#define ORB_SET_EXCLUSIVE(value) ((value & 0x1) << 28)
71#define ORB_SET_LOGIN_RESP_LENGTH(value) (value & 0xffff)
72#define ORB_SET_PASSWD_LENGTH(value) ((value & 0xffff) << 16)
73
74struct sbp2_login_orb {
75 u32 password_hi;
76 u32 password_lo;
77 u32 login_response_hi;
78 u32 login_response_lo;
79 u32 lun_misc;
80 u32 passwd_resp_lengths;
Stefan Richter35bdddb2006-01-31 00:13:33 -050081 u32 status_fifo_hi;
82 u32 status_fifo_lo;
Ben Collins05db5052006-06-12 18:14:47 -040083} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
85#define RESPONSE_GET_LOGIN_ID(value) (value & 0xffff)
86#define RESPONSE_GET_LENGTH(value) ((value >> 16) & 0xffff)
87#define RESPONSE_GET_RECONNECT_HOLD(value) (value & 0xffff)
88
89struct sbp2_login_response {
90 u32 length_login_ID;
91 u32 command_block_agent_hi;
92 u32 command_block_agent_lo;
93 u32 reconnect_hold;
Ben Collins05db5052006-06-12 18:14:47 -040094} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96#define ORB_SET_LOGIN_ID(value) (value & 0xffff)
97
98#define ORB_SET_QUERY_LOGINS_RESP_LENGTH(value) (value & 0xffff)
99
100struct sbp2_query_logins_orb {
101 u32 reserved1;
102 u32 reserved2;
103 u32 query_response_hi;
104 u32 query_response_lo;
105 u32 lun_misc;
106 u32 reserved_resp_length;
Stefan Richter35bdddb2006-01-31 00:13:33 -0500107 u32 status_fifo_hi;
108 u32 status_fifo_lo;
Ben Collins05db5052006-06-12 18:14:47 -0400109} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
111#define RESPONSE_GET_MAX_LOGINS(value) (value & 0xffff)
112#define RESPONSE_GET_ACTIVE_LOGINS(value) ((RESPONSE_GET_LENGTH(value) - 4) / 12)
113
114struct sbp2_query_logins_response {
115 u32 length_max_logins;
116 u32 misc_IDs;
117 u32 initiator_misc_hi;
118 u32 initiator_misc_lo;
Ben Collins05db5052006-06-12 18:14:47 -0400119} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
121struct sbp2_reconnect_orb {
122 u32 reserved1;
123 u32 reserved2;
Stefan Richtera237f352005-11-07 06:31:39 -0500124 u32 reserved3;
125 u32 reserved4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 u32 login_ID_misc;
127 u32 reserved5;
Stefan Richter35bdddb2006-01-31 00:13:33 -0500128 u32 status_fifo_hi;
129 u32 status_fifo_lo;
Ben Collins05db5052006-06-12 18:14:47 -0400130} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131
132struct sbp2_logout_orb {
133 u32 reserved1;
134 u32 reserved2;
Stefan Richtera237f352005-11-07 06:31:39 -0500135 u32 reserved3;
136 u32 reserved4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 u32 login_ID_misc;
138 u32 reserved5;
Stefan Richter35bdddb2006-01-31 00:13:33 -0500139 u32 status_fifo_hi;
140 u32 status_fifo_lo;
Ben Collins05db5052006-06-12 18:14:47 -0400141} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
143#define PAGE_TABLE_SET_SEGMENT_BASE_HI(value) (value & 0xffff)
144#define PAGE_TABLE_SET_SEGMENT_LENGTH(value) ((value & 0xffff) << 16)
145
146struct sbp2_unrestricted_page_table {
147 u32 length_segment_base_hi;
148 u32 segment_base_lo;
Ben Collins05db5052006-06-12 18:14:47 -0400149} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151#define RESP_STATUS_REQUEST_COMPLETE 0x0
152#define RESP_STATUS_TRANSPORT_FAILURE 0x1
153#define RESP_STATUS_ILLEGAL_REQUEST 0x2
154#define RESP_STATUS_VENDOR_DEPENDENT 0x3
155
156#define SBP2_STATUS_NO_ADDITIONAL_INFO 0x0
157#define SBP2_STATUS_REQ_TYPE_NOT_SUPPORTED 0x1
158#define SBP2_STATUS_SPEED_NOT_SUPPORTED 0x2
159#define SBP2_STATUS_PAGE_SIZE_NOT_SUPPORTED 0x3
160#define SBP2_STATUS_ACCESS_DENIED 0x4
161#define SBP2_STATUS_LU_NOT_SUPPORTED 0x5
162#define SBP2_STATUS_MAX_PAYLOAD_TOO_SMALL 0x6
163#define SBP2_STATUS_RESOURCES_UNAVAILABLE 0x8
164#define SBP2_STATUS_FUNCTION_REJECTED 0x9
165#define SBP2_STATUS_LOGIN_ID_NOT_RECOGNIZED 0xa
166#define SBP2_STATUS_DUMMY_ORB_COMPLETED 0xb
167#define SBP2_STATUS_REQUEST_ABORTED 0xc
168#define SBP2_STATUS_UNSPECIFIED_ERROR 0xff
169
170#define SFMT_CURRENT_ERROR 0x0
171#define SFMT_DEFERRED_ERROR 0x1
172#define SFMT_VENDOR_DEPENDENT_STATUS 0x3
173
174#define SBP2_SCSI_STATUS_GOOD 0x0
175#define SBP2_SCSI_STATUS_CHECK_CONDITION 0x2
176#define SBP2_SCSI_STATUS_CONDITION_MET 0x4
177#define SBP2_SCSI_STATUS_BUSY 0x8
178#define SBP2_SCSI_STATUS_RESERVATION_CONFLICT 0x18
179#define SBP2_SCSI_STATUS_COMMAND_TERMINATED 0x22
180
181#define SBP2_SCSI_STATUS_SELECTION_TIMEOUT 0xff
182
Stefan Richter60657722006-07-23 22:18:00 +0200183#define STATUS_GET_SRC(value) (((value) >> 30) & 0x3)
Stefan Richterabbca102006-08-14 18:51:00 +0200184#define STATUS_GET_RESP(value) (((value) >> 28) & 0x3)
Stefan Richter60657722006-07-23 22:18:00 +0200185#define STATUS_GET_LEN(value) (((value) >> 24) & 0x7)
Stefan Richterabbca102006-08-14 18:51:00 +0200186#define STATUS_GET_SBP_STATUS(value) (((value) >> 16) & 0xff)
Stefan Richter60657722006-07-23 22:18:00 +0200187#define STATUS_GET_ORB_OFFSET_HI(value) ((value) & 0x0000ffff)
Stefan Richterabbca102006-08-14 18:51:00 +0200188#define STATUS_TEST_DEAD(value) ((value) & 0x08000000)
Stefan Richter60657722006-07-23 22:18:00 +0200189/* test 'resp' | 'dead' | 'sbp2_status' */
190#define STATUS_TEST_RDS(value) ((value) & 0x38ff0000)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191
192struct sbp2_status_block {
193 u32 ORB_offset_hi_misc;
194 u32 ORB_offset_lo;
Stefan Richtera237f352005-11-07 06:31:39 -0500195 u8 command_set_dependent[24];
Ben Collins05db5052006-06-12 18:14:47 -0400196} __attribute__((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198/*
199 * Miscellaneous SBP2 related config rom defines
200 */
201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202#define SBP2_UNIT_DIRECTORY_OFFSET_KEY 0xd1
203#define SBP2_CSR_OFFSET_KEY 0x54
204#define SBP2_UNIT_SPEC_ID_KEY 0x12
205#define SBP2_UNIT_SW_VERSION_KEY 0x13
206#define SBP2_COMMAND_SET_SPEC_ID_KEY 0x38
207#define SBP2_COMMAND_SET_KEY 0x39
208#define SBP2_UNIT_CHARACTERISTICS_KEY 0x3a
209#define SBP2_DEVICE_TYPE_AND_LUN_KEY 0x14
210#define SBP2_FIRMWARE_REVISION_KEY 0x3c
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212#define SBP2_AGENT_STATE_OFFSET 0x00ULL
213#define SBP2_AGENT_RESET_OFFSET 0x04ULL
214#define SBP2_ORB_POINTER_OFFSET 0x08ULL
215#define SBP2_DOORBELL_OFFSET 0x10ULL
216#define SBP2_UNSOLICITED_STATUS_ENABLE_OFFSET 0x14ULL
217#define SBP2_UNSOLICITED_STATUS_VALUE 0xf
218
219#define SBP2_BUSY_TIMEOUT_ADDRESS 0xfffff0000210ULL
220#define SBP2_BUSY_TIMEOUT_VALUE 0xf
221
222#define SBP2_AGENT_RESET_DATA 0xf
223
224/*
225 * Unit spec id and sw version entry for SBP-2 devices
226 */
227
228#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
229#define SBP2_SW_VERSION_ENTRY 0x00010483
230
231/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 * SCSI specific stuff
233 */
234
235#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236#define SBP2_MAX_SECTORS 255 /* Max sectors supported */
Stefan Richter43863eb2005-12-12 23:03:24 -0500237#define SBP2_MAX_CMDS 8 /* This should be safe */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
Stefan Richter24d3bf82006-05-15 22:04:59 +0200239/* Flags for detected oddities and brokeness */
240#define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
241#define SBP2_WORKAROUND_INQUIRY_36 0x2
242#define SBP2_WORKAROUND_MODE_SENSE_8 0x4
Stefan Richtere9a1c522006-05-15 22:06:37 +0200243#define SBP2_WORKAROUND_FIX_CAPACITY 0x8
Stefan Richter679c0cd2006-05-15 22:08:09 +0200244#define SBP2_WORKAROUND_OVERRIDE 0x100
Stefan Richter24d3bf82006-05-15 22:04:59 +0200245
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246/* This is the two dma types we use for cmd_dma below */
247enum cmd_dma_types {
248 CMD_DMA_NONE,
249 CMD_DMA_PAGE,
250 CMD_DMA_SINGLE
251};
252
253/*
254 * Encapsulates all the info necessary for an outstanding command.
255 */
256struct sbp2_command_info {
257
258 struct list_head list;
259 struct sbp2_command_orb command_orb ____cacheline_aligned;
260 dma_addr_t command_orb_dma ____cacheline_aligned;
261 struct scsi_cmnd *Current_SCpnt;
262 void (*Current_done)(struct scsi_cmnd *);
263
264 /* Also need s/g structure for each sbp2 command */
265 struct sbp2_unrestricted_page_table scatter_gather_element[SG_ALL] ____cacheline_aligned;
266 dma_addr_t sge_dma ____cacheline_aligned;
267 void *sge_buffer;
268 dma_addr_t cmd_dma;
269 enum cmd_dma_types dma_type;
270 unsigned long dma_size;
271 int dma_dir;
272
273};
274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275struct sbp2scsi_host_info;
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277/*
278 * Information needed on a per scsi id basis (one for each sbp2 device)
279 */
280struct scsi_id_instance_data {
281 /*
282 * Various sbp2 specific structures
283 */
284 struct sbp2_command_orb *last_orb;
285 dma_addr_t last_orb_dma;
286 struct sbp2_login_orb *login_orb;
287 dma_addr_t login_orb_dma;
288 struct sbp2_login_response *login_response;
289 dma_addr_t login_response_dma;
290 struct sbp2_query_logins_orb *query_logins_orb;
291 dma_addr_t query_logins_orb_dma;
292 struct sbp2_query_logins_response *query_logins_response;
293 dma_addr_t query_logins_response_dma;
294 struct sbp2_reconnect_orb *reconnect_orb;
295 dma_addr_t reconnect_orb_dma;
296 struct sbp2_logout_orb *logout_orb;
297 dma_addr_t logout_orb_dma;
298 struct sbp2_status_block status_block;
299
300 /*
301 * Stuff we need to know about the sbp2 device itself
302 */
303 u64 sbp2_management_agent_addr;
304 u64 sbp2_command_block_agent_addr;
305 u32 speed_code;
306 u32 max_payload_size;
307
308 /*
309 * Values pulled from the device's unit directory
310 */
311 u32 sbp2_command_set_spec_id;
312 u32 sbp2_command_set;
313 u32 sbp2_unit_characteristics;
Ben Collinse309fc62005-11-07 06:31:34 -0500314 u32 sbp2_lun;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 u32 sbp2_firmware_revision;
316
317 /*
Stefan Richter35bdddb2006-01-31 00:13:33 -0500318 * Address for the device to write status blocks to
319 */
320 u64 status_fifo_addr;
321
322 /*
Stefan Richtere8398bb2006-07-23 22:19:00 +0200323 * Waitqueue flag for logins, reconnects, logouts, query logins
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 */
Stefan Richtere8398bb2006-07-23 22:19:00 +0200325 int access_complete:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327 /*
328 * Pool of command orbs, so we can have more than overlapped command per id
329 */
330 spinlock_t sbp2_command_orb_lock;
331 struct list_head sbp2_command_orb_inuse;
332 struct list_head sbp2_command_orb_completed;
333
334 struct list_head scsi_list;
335
336 /* Node entry, as retrieved from NodeMgr entries */
337 struct node_entry *ne;
338 struct unit_directory *ud;
339
340 /* A backlink to our host_info */
341 struct sbp2scsi_host_info *hi;
342
343 /* SCSI related pointers */
344 struct scsi_device *sdev;
345 struct Scsi_Host *scsi_host;
346
347 /* Device specific workarounds/brokeness */
Stefan Richter24d3bf82006-05-15 22:04:59 +0200348 unsigned workarounds;
Stefan Richter09ee67a2006-08-14 18:43:00 +0200349
Stefan Richter2cccbb52006-08-14 18:59:00 +0200350 atomic_t state;
David Howellsc4028952006-11-22 14:57:56 +0000351 struct delayed_work protocol_work;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352};
353
Stefan Richter2cccbb52006-08-14 18:59:00 +0200354/* For use in scsi_id_instance_data.state */
355enum sbp2lu_state_types {
356 SBP2LU_STATE_RUNNING, /* all normal */
357 SBP2LU_STATE_IN_RESET, /* between bus reset and reconnect */
358 SBP2LU_STATE_IN_SHUTDOWN /* when sbp2_remove was called */
359};
360
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361/* Sbp2 host data structure (one per IEEE1394 host) */
362struct sbp2scsi_host_info {
363 struct hpsb_host *host; /* IEEE1394 host */
364 struct list_head scsi_ids; /* List of scsi ids on this host */
365};
366
367/*
368 * Function prototypes
369 */
370
371/*
372 * Various utility prototypes
373 */
374static int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id);
375static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id);
376static struct sbp2_command_info *sbp2util_find_command_for_orb(struct scsi_id_instance_data *scsi_id, dma_addr_t orb);
377static struct sbp2_command_info *sbp2util_find_command_for_SCpnt(struct scsi_id_instance_data *scsi_id, void *SCpnt);
378static struct sbp2_command_info *sbp2util_allocate_command_orb(struct scsi_id_instance_data *scsi_id,
379 struct scsi_cmnd *Current_SCpnt,
380 void (*Current_done)(struct scsi_cmnd *));
381static void sbp2util_mark_command_completed(struct scsi_id_instance_data *scsi_id,
382 struct sbp2_command_info *command);
383
384
385static int sbp2_start_device(struct scsi_id_instance_data *scsi_id);
386static void sbp2_remove_device(struct scsi_id_instance_data *scsi_id);
387
388#ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA
389static int sbp2_handle_physdma_write(struct hpsb_host *host, int nodeid, int destid, quadlet_t *data,
390 u64 addr, size_t length, u16 flags);
391static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid, quadlet_t *data,
392 u64 addr, size_t length, u16 flags);
393#endif
394
395/*
396 * SBP-2 protocol related prototypes
397 */
398static int sbp2_query_logins(struct scsi_id_instance_data *scsi_id);
399static int sbp2_login_device(struct scsi_id_instance_data *scsi_id);
400static int sbp2_reconnect_device(struct scsi_id_instance_data *scsi_id);
401static int sbp2_logout_device(struct scsi_id_instance_data *scsi_id);
402static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, int destid,
403 quadlet_t *data, u64 addr, size_t length, u16 flags);
404static int sbp2_agent_reset(struct scsi_id_instance_data *scsi_id, int wait);
Ben Collinsfe42b052006-06-12 18:12:59 -0400405static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status,
406 unchar *sense_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id,
408 struct unit_directory *ud);
409static int sbp2_set_busy_timeout(struct scsi_id_instance_data *scsi_id);
410static int sbp2_max_speed_and_size(struct scsi_id_instance_data *scsi_id);
411
412#endif /* SBP2_H */