Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / drivers / scsi / 3w-sas.h
1 /*
2    3w-sas.h -- LSI 3ware SAS/SATA-RAID Controller device driver for Linux.
3
4    Written By: Adam Radford <linuxraid@lsi.com>
5
6    Copyright (C) 2009 LSI Corporation.
7
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; version 2 of the License.
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    NO WARRANTY
18    THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
19    CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
20    LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
21    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
22    solely responsible for determining the appropriateness of using and
23    distributing the Program and assumes all risks associated with its
24    exercise of rights under this Agreement, including but not limited to
25    the risks and costs of program errors, damage to or loss of data,
26    programs or equipment, and unavailability or interruption of operations.
27
28    DISCLAIMER OF LIABILITY
29    NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
30    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31    DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
32    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
33    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
34    USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
35    HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
36
37    You should have received a copy of the GNU General Public License
38    along with this program; if not, write to the Free Software
39    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
40
41    Bugs/Comments/Suggestions should be mailed to:
42    linuxraid@lsi.com
43
44    For more information, goto:
45    http://www.lsi.com
46 */
47
48 #ifndef _3W_SAS_H
49 #define _3W_SAS_H
50
51 /* AEN severity table */
52 static char *twl_aen_severity_table[] =
53 {
54         "None", "ERROR", "WARNING", "INFO", "DEBUG", NULL
55 };
56
57 /* Liberator register offsets */
58 #define TWL_STATUS                         0x0  /* Status */
59 #define TWL_HIBDB                          0x20 /* Inbound doorbell */
60 #define TWL_HISTAT                         0x30 /* Host interrupt status */
61 #define TWL_HIMASK                         0x34 /* Host interrupt mask */
62 #define TWL_HOBDB                          0x9C /* Outbound doorbell */
63 #define TWL_HOBDBC                         0xA0 /* Outbound doorbell clear */
64 #define TWL_SCRPD3                         0xBC /* Scratchpad */
65 #define TWL_HIBQPL                         0xC0 /* Host inbound Q low */
66 #define TWL_HIBQPH                         0xC4 /* Host inbound Q high */
67 #define TWL_HOBQPL                         0xC8 /* Host outbound Q low */
68 #define TWL_HOBQPH                         0xCC /* Host outbound Q high */
69 #define TWL_HISTATUS_VALID_INTERRUPT       0xC
70 #define TWL_HISTATUS_ATTENTION_INTERRUPT   0x4
71 #define TWL_HISTATUS_RESPONSE_INTERRUPT    0x8
72 #define TWL_STATUS_OVERRUN_SUBMIT          0x2000
73 #define TWL_ISSUE_SOFT_RESET               0x100
74 #define TWL_CONTROLLER_READY               0x2000
75 #define TWL_DOORBELL_CONTROLLER_ERROR      0x200000
76 #define TWL_DOORBELL_ATTENTION_INTERRUPT   0x40000
77 #define TWL_PULL_MODE                      0x1
78
79 /* Command packet opcodes used by the driver */
80 #define TW_OP_INIT_CONNECTION 0x1
81 #define TW_OP_GET_PARAM       0x12
82 #define TW_OP_SET_PARAM       0x13
83 #define TW_OP_EXECUTE_SCSI    0x10
84
85 /* Asynchronous Event Notification (AEN) codes used by the driver */
86 #define TW_AEN_QUEUE_EMPTY       0x0000
87 #define TW_AEN_SOFT_RESET        0x0001
88 #define TW_AEN_SYNC_TIME_WITH_HOST 0x031
89 #define TW_AEN_SEVERITY_ERROR    0x1
90 #define TW_AEN_SEVERITY_DEBUG    0x4
91 #define TW_AEN_NOT_RETRIEVED 0x1
92
93 /* Command state defines */
94 #define TW_S_INITIAL   0x1  /* Initial state */
95 #define TW_S_STARTED   0x2  /* Id in use */
96 #define TW_S_POSTED    0x4  /* Posted to the controller */
97 #define TW_S_COMPLETED 0x8  /* Completed by isr */
98 #define TW_S_FINISHED  0x10 /* I/O completely done */
99
100 /* Compatibility defines */
101 #define TW_9750_ARCH_ID 10
102 #define TW_CURRENT_DRIVER_SRL 40
103 #define TW_CURRENT_DRIVER_BUILD 0
104 #define TW_CURRENT_DRIVER_BRANCH 0
105
106 /* Phase defines */
107 #define TW_PHASE_INITIAL 0
108 #define TW_PHASE_SGLIST  2
109
110 /* Misc defines */
111 #define TW_SECTOR_SIZE                        512
112 #define TW_MAX_UNITS                          32
113 #define TW_INIT_MESSAGE_CREDITS               0x100
114 #define TW_INIT_COMMAND_PACKET_SIZE           0x3
115 #define TW_INIT_COMMAND_PACKET_SIZE_EXTENDED  0x6
116 #define TW_EXTENDED_INIT_CONNECT              0x2
117 #define TW_BASE_FW_SRL                        24
118 #define TW_BASE_FW_BRANCH                     0
119 #define TW_BASE_FW_BUILD                      1
120 #define TW_Q_LENGTH                           256
121 #define TW_Q_START                            0
122 #define TW_MAX_SLOT                           32
123 #define TW_MAX_RESET_TRIES                    2
124 #define TW_MAX_CMDS_PER_LUN                   254
125 #define TW_MAX_AEN_DRAIN                      255
126 #define TW_IN_RESET                           2
127 #define TW_USING_MSI                          3
128 #define TW_IN_ATTENTION_LOOP                  4
129 #define TW_MAX_SECTORS                        256
130 #define TW_MAX_CDB_LEN                        16
131 #define TW_IOCTL_CHRDEV_TIMEOUT               60 /* 60 seconds */
132 #define TW_IOCTL_CHRDEV_FREE                  -1
133 #define TW_COMMAND_OFFSET                     128 /* 128 bytes */
134 #define TW_VERSION_TABLE                      0x0402
135 #define TW_TIMEKEEP_TABLE                     0x040A
136 #define TW_INFORMATION_TABLE                  0x0403
137 #define TW_PARAM_FWVER                        3
138 #define TW_PARAM_FWVER_LENGTH                 16
139 #define TW_PARAM_BIOSVER                      4
140 #define TW_PARAM_BIOSVER_LENGTH               16
141 #define TW_PARAM_MODEL                        8
142 #define TW_PARAM_MODEL_LENGTH                 16
143 #define TW_PARAM_PHY_SUMMARY_TABLE            1
144 #define TW_PARAM_PHYCOUNT                     2
145 #define TW_PARAM_PHYCOUNT_LENGTH              1
146 #define TW_IOCTL_FIRMWARE_PASS_THROUGH        0x108  // Used by smartmontools
147 #define TW_ALLOCATION_LENGTH                  128
148 #define TW_SENSE_DATA_LENGTH                  18
149 #define TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED   0x10a
150 #define TW_ERROR_INVALID_FIELD_IN_CDB         0x10d
151 #define TW_ERROR_UNIT_OFFLINE                 0x128
152 #define TW_MESSAGE_SOURCE_CONTROLLER_ERROR    3
153 #define TW_MESSAGE_SOURCE_CONTROLLER_EVENT    4
154 #define TW_DRIVER                             6
155 #ifndef PCI_DEVICE_ID_3WARE_9750
156 #define PCI_DEVICE_ID_3WARE_9750 0x1010
157 #endif
158
159 /* Bitmask macros to eliminate bitfields */
160
161 /* opcode: 5, reserved: 3 */
162 #define TW_OPRES_IN(x,y) ((x << 5) | (y & 0x1f))
163 #define TW_OP_OUT(x) (x & 0x1f)
164
165 /* opcode: 5, sgloffset: 3 */
166 #define TW_OPSGL_IN(x,y) ((x << 5) | (y & 0x1f))
167 #define TW_SGL_OUT(x) ((x >> 5) & 0x7)
168
169 /* severity: 3, reserved: 5 */
170 #define TW_SEV_OUT(x) (x & 0x7)
171
172 /* not_mfa: 1, reserved: 7, status: 8, request_id: 16 */
173 #define TW_RESID_OUT(x) ((x >> 16) & 0xffff)
174 #define TW_NOTMFA_OUT(x) (x & 0x1)
175
176 /* request_id: 12, lun: 4 */
177 #define TW_REQ_LUN_IN(lun, request_id) (((lun << 12) & 0xf000) | (request_id & 0xfff))
178 #define TW_LUN_OUT(lun) ((lun >> 12) & 0xf)
179
180 /* Register access macros */
181 #define TWL_STATUS_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_STATUS)
182 #define TWL_HOBQPL_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBQPL)
183 #define TWL_HOBQPH_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBQPH)
184 #define TWL_HOBDB_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBDB)
185 #define TWL_HOBDBC_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBDBC)
186 #define TWL_HIMASK_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIMASK)
187 #define TWL_HISTAT_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HISTAT)
188 #define TWL_HIBQPH_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIBQPH)
189 #define TWL_HIBQPL_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIBQPL)
190 #define TWL_HIBDB_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIBDB)
191 #define TWL_SCRPD3_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_SCRPD3)
192 #define TWL_MASK_INTERRUPTS(x) (writel(~0, TWL_HIMASK_REG_ADDR(tw_dev)))
193 #define TWL_UNMASK_INTERRUPTS(x) (writel(~TWL_HISTATUS_VALID_INTERRUPT, TWL_HIMASK_REG_ADDR(tw_dev)))
194 #define TWL_CLEAR_DB_INTERRUPT(x) (writel(~0, TWL_HOBDBC_REG_ADDR(tw_dev)))
195 #define TWL_SOFT_RESET(x) (writel(TWL_ISSUE_SOFT_RESET, TWL_HIBDB_REG_ADDR(tw_dev)))
196
197 /* Macros */
198 #define TW_PRINTK(h,a,b,c) { \
199 if (h) \
200 printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s.\n",h->host_no,a,b,c); \
201 else \
202 printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s.\n",a,b,c); \
203 }
204 #define TW_MAX_LUNS 16
205 #define TW_COMMAND_SIZE (sizeof(dma_addr_t) > 4 ? 6 : 4)
206 #define TW_LIBERATOR_MAX_SGL_LENGTH (sizeof(dma_addr_t) > 4 ? 46 : 92)
207 #define TW_LIBERATOR_MAX_SGL_LENGTH_OLD (sizeof(dma_addr_t) > 4 ? 47 : 94)
208 #define TW_PADDING_LENGTH_LIBERATOR 136
209 #define TW_PADDING_LENGTH_LIBERATOR_OLD 132
210 #define TW_CPU_TO_SGL(x) (sizeof(dma_addr_t) > 4 ? cpu_to_le64(x) : cpu_to_le32(x))
211
212 #pragma pack(1)
213
214 /* SGL entry */
215 typedef struct TAG_TW_SG_Entry_ISO {
216         dma_addr_t address;
217         dma_addr_t length;
218 } TW_SG_Entry_ISO;
219
220 /* Old Command Packet with ISO SGL */
221 typedef struct TW_Command {
222         unsigned char opcode__sgloffset;
223         unsigned char size;
224         unsigned char request_id;
225         unsigned char unit__hostid;
226         /* Second DWORD */
227         unsigned char status;
228         unsigned char flags;
229         union {
230                 unsigned short block_count;
231                 unsigned short parameter_count;
232         } byte6_offset;
233         union {
234                 struct {
235                         u32 lba;
236                         TW_SG_Entry_ISO sgl[TW_LIBERATOR_MAX_SGL_LENGTH_OLD];
237                         unsigned char padding[TW_PADDING_LENGTH_LIBERATOR_OLD];
238                 } io;
239                 struct {
240                         TW_SG_Entry_ISO sgl[TW_LIBERATOR_MAX_SGL_LENGTH_OLD];
241                         u32 padding;
242                         unsigned char padding2[TW_PADDING_LENGTH_LIBERATOR_OLD];
243                 } param;
244         } byte8_offset;
245 } TW_Command;
246
247 /* New Command Packet with ISO SGL */
248 typedef struct TAG_TW_Command_Apache {
249         unsigned char opcode__reserved;
250         unsigned char unit;
251         unsigned short request_id__lunl;
252         unsigned char status;
253         unsigned char sgl_offset;
254         unsigned short sgl_entries__lunh;
255         unsigned char cdb[16];
256         TW_SG_Entry_ISO sg_list[TW_LIBERATOR_MAX_SGL_LENGTH];
257         unsigned char padding[TW_PADDING_LENGTH_LIBERATOR];
258 } TW_Command_Apache;
259
260 /* New command packet header */
261 typedef struct TAG_TW_Command_Apache_Header {
262         unsigned char sense_data[TW_SENSE_DATA_LENGTH];
263         struct {
264                 char reserved[4];
265                 unsigned short error;
266                 unsigned char padding;
267                 unsigned char severity__reserved;
268         } status_block;
269         unsigned char err_specific_desc[98];
270         struct {
271                 unsigned char size_header;
272                 unsigned short request_id;
273                 unsigned char size_sense;
274         } header_desc;
275 } TW_Command_Apache_Header;
276
277 /* This struct is a union of the 2 command packets */
278 typedef struct TAG_TW_Command_Full {
279         TW_Command_Apache_Header header;
280         union {
281                 TW_Command oldcommand;
282                 TW_Command_Apache newcommand;
283         } command;
284 } TW_Command_Full;
285
286 /* Initconnection structure */
287 typedef struct TAG_TW_Initconnect {
288         unsigned char opcode__reserved;
289         unsigned char size;
290         unsigned char request_id;
291         unsigned char res2;
292         unsigned char status;
293         unsigned char flags;
294         unsigned short message_credits;
295         u32 features;
296         unsigned short fw_srl;
297         unsigned short fw_arch_id;
298         unsigned short fw_branch;
299         unsigned short fw_build;
300         u32 result;
301 } TW_Initconnect;
302
303 /* Event info structure */
304 typedef struct TAG_TW_Event
305 {
306         unsigned int sequence_id;
307         unsigned int time_stamp_sec;
308         unsigned short aen_code;
309         unsigned char severity;
310         unsigned char retrieved;
311         unsigned char repeat_count;
312         unsigned char parameter_len;
313         unsigned char parameter_data[98];
314 } TW_Event;
315
316 typedef struct TAG_TW_Ioctl_Driver_Command {
317         unsigned int control_code;
318         unsigned int status;
319         unsigned int unique_id;
320         unsigned int sequence_id;
321         unsigned int os_specific;
322         unsigned int buffer_length;
323 } TW_Ioctl_Driver_Command;
324
325 typedef struct TAG_TW_Ioctl_Apache {
326         TW_Ioctl_Driver_Command driver_command;
327         char padding[488];
328         TW_Command_Full firmware_command;
329         char data_buffer[1];
330 } TW_Ioctl_Buf_Apache;
331
332 /* GetParam descriptor */
333 typedef struct {
334         unsigned short  table_id;
335         unsigned short  parameter_id;
336         unsigned short  parameter_size_bytes;
337         unsigned short  actual_parameter_size_bytes;
338         unsigned char   data[1];
339 } TW_Param_Apache;
340
341 /* Compatibility information structure */
342 typedef struct TAG_TW_Compatibility_Info
343 {
344         char driver_version[32];
345         unsigned short working_srl;
346         unsigned short working_branch;
347         unsigned short working_build;
348         unsigned short driver_srl_high;
349         unsigned short driver_branch_high;
350         unsigned short driver_build_high;
351         unsigned short driver_srl_low;
352         unsigned short driver_branch_low;
353         unsigned short driver_build_low;
354         unsigned short fw_on_ctlr_srl;
355         unsigned short fw_on_ctlr_branch;
356         unsigned short fw_on_ctlr_build;
357 } TW_Compatibility_Info;
358
359 #pragma pack()
360
361 typedef struct TAG_TW_Device_Extension {
362         void                     __iomem *base_addr;
363         unsigned long           *generic_buffer_virt[TW_Q_LENGTH];
364         dma_addr_t              generic_buffer_phys[TW_Q_LENGTH];
365         TW_Command_Full         *command_packet_virt[TW_Q_LENGTH];
366         dma_addr_t              command_packet_phys[TW_Q_LENGTH];
367         TW_Command_Apache_Header *sense_buffer_virt[TW_Q_LENGTH];
368         dma_addr_t              sense_buffer_phys[TW_Q_LENGTH];
369         struct pci_dev          *tw_pci_dev;
370         struct scsi_cmnd        *srb[TW_Q_LENGTH];
371         unsigned char           free_queue[TW_Q_LENGTH];
372         unsigned char           free_head;
373         unsigned char           free_tail;
374         int                     state[TW_Q_LENGTH];
375         unsigned int            posted_request_count;
376         unsigned int            max_posted_request_count;
377         unsigned int            max_sgl_entries;
378         unsigned int            sgl_entries;
379         unsigned int            num_resets;
380         unsigned int            sector_count;
381         unsigned int            max_sector_count;
382         unsigned int            aen_count;
383         struct Scsi_Host        *host;
384         long                    flags;
385         TW_Event                *event_queue[TW_Q_LENGTH];
386         unsigned char           error_index;
387         unsigned int            error_sequence_id;
388         int                     chrdev_request_id;
389         wait_queue_head_t       ioctl_wqueue;
390         struct mutex            ioctl_lock;
391         TW_Compatibility_Info   tw_compat_info;
392         char                    online;
393 } TW_Device_Extension;
394
395 #endif /* _3W_SAS_H */
396