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[linux-2.6.git] / drivers / scsi / hptiop.h
1 /*
2  * HighPoint RR3xxx controller driver for Linux
3  * Copyright (C) 2006 HighPoint Technologies, Inc. All Rights Reserved.
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; version 2 of the License.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * Please report bugs/comments/suggestions to linux@highpoint-tech.com
15  *
16  * For more information, visit http://www.highpoint-tech.com
17  */
18 #ifndef _HPTIOP_H_
19 #define _HPTIOP_H_
20
21 /*
22  * logical device type.
23  * Identify array (logical device) and physical device.
24  */
25 #define LDT_ARRAY   1
26 #define LDT_DEVICE  2
27
28 /*
29  * Array types
30  */
31 #define AT_UNKNOWN  0
32 #define AT_RAID0    1
33 #define AT_RAID1    2
34 #define AT_RAID5    3
35 #define AT_RAID6    4
36 #define AT_JBOD     7
37
38 #define MAX_NAME_LENGTH     36
39 #define MAX_ARRAYNAME_LEN   16
40
41 #define MAX_ARRAY_MEMBERS_V1 8
42 #define MAX_ARRAY_MEMBERS_V2 16
43
44 /* keep definition for source code compatiblity */
45 #define MAX_ARRAY_MEMBERS MAX_ARRAY_MEMBERS_V1
46
47 /*
48  * array flags
49  */
50 #define ARRAY_FLAG_DISABLED         0x00000001 /* The array is disabled */
51 #define ARRAY_FLAG_NEEDBUILDING     0x00000002 /* need to be rebuilt */
52 #define ARRAY_FLAG_REBUILDING       0x00000004 /* in rebuilding process */
53 #define ARRAY_FLAG_BROKEN           0x00000008 /* broken but still working */
54 #define ARRAY_FLAG_BOOTDISK         0x00000010 /* has a active partition */
55 #define ARRAY_FLAG_BOOTMARK         0x00000040 /* array has boot mark set */
56 #define ARRAY_FLAG_NEED_AUTOREBUILD 0x00000080 /* auto-rebuild should start */
57 #define ARRAY_FLAG_VERIFYING        0x00000100 /* is being verified */
58 #define ARRAY_FLAG_INITIALIZING     0x00000200 /* is being initialized */
59 #define ARRAY_FLAG_TRANSFORMING     0x00000400 /* tranform in progress */
60 #define ARRAY_FLAG_NEEDTRANSFORM    0x00000800 /* array need tranform */
61 #define ARRAY_FLAG_NEEDINITIALIZING 0x00001000 /* initialization not done */
62 #define ARRAY_FLAG_BROKEN_REDUNDANT 0x00002000 /* broken but redundant */
63
64 /*
65  * device flags
66  */
67 #define DEVICE_FLAG_DISABLED        0x00000001 /* device is disabled */
68 #define DEVICE_FLAG_UNINITIALIZED   0x00010000 /* device is not initialized */
69 #define DEVICE_FLAG_LEGACY          0x00020000 /* lagacy drive */
70 #define DEVICE_FLAG_IS_SPARE        0x80000000 /* is a spare disk */
71
72 /*
73  * ioctl codes
74  */
75 #define HPT_CTL_CODE(x) (x+0xFF00)
76 #define HPT_CTL_CODE_LINUX_TO_IOP(x) ((x)-0xff00)
77
78 #define HPT_IOCTL_GET_CONTROLLER_INFO       HPT_CTL_CODE(2)
79 #define HPT_IOCTL_GET_CHANNEL_INFO          HPT_CTL_CODE(3)
80 #define HPT_IOCTL_GET_LOGICAL_DEVICES       HPT_CTL_CODE(4)
81 #define HPT_IOCTL_GET_DRIVER_CAPABILITIES   HPT_CTL_CODE(19)
82 #define HPT_IOCTL_GET_DEVICE_INFO_V3        HPT_CTL_CODE(46)
83 #define HPT_IOCTL_GET_CONTROLLER_INFO_V2    HPT_CTL_CODE(47)
84
85 /*
86  * Controller information.
87  */
88 struct hpt_controller_info {
89         u8      chip_type;                    /* chip type */
90         u8      interrupt_level;              /* IRQ level */
91         u8      num_buses;                    /* bus count */
92         u8      chip_flags;
93
94         u8      product_id[MAX_NAME_LENGTH];/* product name */
95         u8      vendor_id[MAX_NAME_LENGTH]; /* vendor name */
96 }
97 __attribute__((packed));
98
99 /*
100  * Channel information.
101  */
102 struct hpt_channel_info {
103         __le32  io_port;         /* IDE Base Port Address */
104         __le32  control_port;    /* IDE Control Port Address */
105         __le32  devices[2];      /* device connected to this channel */
106 }
107 __attribute__((packed));
108
109 /*
110  * Array information.
111  */
112 struct hpt_array_info_v3 {
113         u8      name[MAX_ARRAYNAME_LEN]; /* array name */
114         u8      description[64];         /* array description */
115         u8      create_manager[16];      /* who created it */
116         __le32  create_time;             /* when created it */
117
118         u8      array_type;              /* array type */
119         u8      block_size_shift;        /* stripe size */
120         u8      ndisk;                   /* Number of ID in Members[] */
121         u8      reserved;
122
123         __le32  flags;                   /* working flags, see ARRAY_FLAG_XXX */
124         __le32  members[MAX_ARRAY_MEMBERS_V2];  /* member array/disks */
125
126         __le32  rebuilding_progress;
127         __le64  rebuilt_sectors; /* rebuilding point (LBA) for single member */
128
129         __le32  transform_source;
130         __le32  transform_target;    /* destination device ID */
131         __le32  transforming_progress;
132         __le32  signature;              /* persistent identification*/
133         __le16  critical_members;       /* bit mask of critical members */
134         __le16  reserve2;
135         __le32  reserve;
136 }
137 __attribute__((packed));
138
139 /*
140  * physical device information.
141  */
142 #define MAX_PARENTS_PER_DISK    8
143
144 struct hpt_device_info_v2 {
145         u8   ctlr_id;             /* controller id */
146         u8   path_id;             /* bus */
147         u8   target_id;           /* id */
148         u8   device_mode_setting; /* Current Data Transfer mode: 0-4 PIO0-4 */
149                                   /* 5-7 MW DMA0-2, 8-13 UDMA0-5 */
150         u8   device_type;         /* device type */
151         u8   usable_mode;         /* highest usable mode */
152
153 #ifdef __BIG_ENDIAN_BITFIELD
154         u8   NCQ_enabled: 1;
155         u8   NCQ_supported: 1;
156         u8   TCQ_enabled: 1;
157         u8   TCQ_supported: 1;
158         u8   write_cache_enabled: 1;
159         u8   write_cache_supported: 1;
160         u8   read_ahead_enabled: 1;
161         u8   read_ahead_supported: 1;
162         u8   reserved6: 6;
163         u8   spin_up_mode: 2;
164 #else
165         u8   read_ahead_supported: 1;
166         u8   read_ahead_enabled: 1;
167         u8   write_cache_supported: 1;
168         u8   write_cache_enabled: 1;
169         u8   TCQ_supported: 1;
170         u8   TCQ_enabled: 1;
171         u8   NCQ_supported: 1;
172         u8   NCQ_enabled: 1;
173         u8   spin_up_mode: 2;
174         u8   reserved6: 6;
175 #endif
176
177         __le32  flags;         /* working flags, see DEVICE_FLAG_XXX */
178         u8      ident[150];    /* (partitial) Identify Data of this device */
179
180         __le64  total_free;
181         __le64  max_free;
182         __le64  bad_sectors;
183         __le32  parent_arrays[MAX_PARENTS_PER_DISK];
184 }
185 __attribute__((packed));
186
187 /*
188  * Logical device information.
189  */
190 #define INVALID_TARGET_ID   0xFF
191 #define INVALID_BUS_ID      0xFF
192
193 struct hpt_logical_device_info_v3 {
194         u8       type;                   /* LDT_ARRAY or LDT_DEVICE */
195         u8       cache_policy;           /* refer to CACHE_POLICY_xxx */
196         u8       vbus_id;                /* vbus sequence in vbus_list */
197         u8       target_id;              /* OS target id. 0xFF is invalid */
198                                          /* OS name: DISK $VBusId_$TargetId */
199         __le64   capacity;               /* array capacity */
200         __le32   parent_array;           /* don't use this field for physical
201                                             device. use ParentArrays field in
202                                             hpt_device_info_v2 */
203         /* reserved statistic fields */
204         __le32   stat1;
205         __le32   stat2;
206         __le32   stat3;
207         __le32   stat4;
208
209         union {
210                 struct hpt_array_info_v3 array;
211                 struct hpt_device_info_v2 device;
212         } __attribute__((packed)) u;
213
214 }
215 __attribute__((packed));
216
217 /*
218  * ioctl structure
219  */
220 #define HPT_IOCTL_MAGIC   0xA1B2C3D4
221
222 struct hpt_ioctl_u {
223         u32   magic;            /* used to check if it's a valid ioctl packet */
224         u32   ioctl_code;       /* operation control code */
225         void __user *inbuf;     /* input data buffer */
226         u32   inbuf_size;       /* size of input data buffer */
227         void __user *outbuf;    /* output data buffer */
228         u32   outbuf_size;      /* size of output data buffer */
229         void __user *bytes_returned;   /* count of bytes returned */
230 }
231 __attribute__((packed));
232
233
234 struct hpt_iopmu
235 {
236         __le32 resrved0[4];
237         __le32 inbound_msgaddr0;
238         __le32 inbound_msgaddr1;
239         __le32 outbound_msgaddr0;
240         __le32 outbound_msgaddr1;
241         __le32 inbound_doorbell;
242         __le32 inbound_intstatus;
243         __le32 inbound_intmask;
244         __le32 outbound_doorbell;
245         __le32 outbound_intstatus;
246         __le32 outbound_intmask;
247         __le32 reserved1[2];
248         __le32 inbound_queue;
249         __le32 outbound_queue;
250 };
251
252 #define IOPMU_QUEUE_EMPTY            0xffffffff
253 #define IOPMU_QUEUE_MASK_HOST_BITS   0xf0000000
254 #define IOPMU_QUEUE_ADDR_HOST_BIT    0x80000000
255
256 #define IOPMU_OUTBOUND_INT_MSG0      1
257 #define IOPMU_OUTBOUND_INT_MSG1      2
258 #define IOPMU_OUTBOUND_INT_DOORBELL  4
259 #define IOPMU_OUTBOUND_INT_POSTQUEUE 8
260 #define IOPMU_OUTBOUND_INT_PCI       0x10
261
262 #define IOPMU_INBOUND_INT_MSG0       1
263 #define IOPMU_INBOUND_INT_MSG1       2
264 #define IOPMU_INBOUND_INT_DOORBELL   4
265 #define IOPMU_INBOUND_INT_ERROR      8
266 #define IOPMU_INBOUND_INT_POSTQUEUE  0x10
267
268 enum hpt_iopmu_message {
269         /* host-to-iop messages */
270         IOPMU_INBOUND_MSG0_NOP = 0,
271         IOPMU_INBOUND_MSG0_RESET,
272         IOPMU_INBOUND_MSG0_FLUSH,
273         IOPMU_INBOUND_MSG0_SHUTDOWN,
274         IOPMU_INBOUND_MSG0_STOP_BACKGROUND_TASK,
275         IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK,
276         IOPMU_INBOUND_MSG0_MAX = 0xff,
277         /* iop-to-host messages */
278         IOPMU_OUTBOUND_MSG0_REGISTER_DEVICE_0 = 0x100,
279         IOPMU_OUTBOUND_MSG0_REGISTER_DEVICE_MAX = 0x1ff,
280         IOPMU_OUTBOUND_MSG0_UNREGISTER_DEVICE_0 = 0x200,
281         IOPMU_OUTBOUND_MSG0_UNREGISTER_DEVICE_MAX = 0x2ff,
282         IOPMU_OUTBOUND_MSG0_REVALIDATE_DEVICE_0 = 0x300,
283         IOPMU_OUTBOUND_MSG0_REVALIDATE_DEVICE_MAX = 0x3ff,
284 };
285
286 struct hpt_iop_request_header
287 {
288         __le32 size;
289         __le32 type;
290         __le32 flags;
291         __le32 result;
292         __le32 context; /* host context */
293         __le32 context_hi32;
294 };
295
296 #define IOP_REQUEST_FLAG_SYNC_REQUEST 1
297 #define IOP_REQUEST_FLAG_BIST_REQUEST 2
298 #define IOP_REQUEST_FLAG_REMAPPED     4
299 #define IOP_REQUEST_FLAG_OUTPUT_CONTEXT 8
300
301 enum hpt_iop_request_type {
302         IOP_REQUEST_TYPE_GET_CONFIG = 0,
303         IOP_REQUEST_TYPE_SET_CONFIG,
304         IOP_REQUEST_TYPE_BLOCK_COMMAND,
305         IOP_REQUEST_TYPE_SCSI_COMMAND,
306         IOP_REQUEST_TYPE_IOCTL_COMMAND,
307         IOP_REQUEST_TYPE_MAX
308 };
309
310 enum hpt_iop_result_type {
311         IOP_RESULT_PENDING = 0,
312         IOP_RESULT_SUCCESS,
313         IOP_RESULT_FAIL,
314         IOP_RESULT_BUSY,
315         IOP_RESULT_RESET,
316         IOP_RESULT_INVALID_REQUEST,
317         IOP_RESULT_BAD_TARGET,
318         IOP_RESULT_MODE_SENSE_CHECK_CONDITION,
319 };
320
321 struct hpt_iop_request_get_config
322 {
323         struct hpt_iop_request_header header;
324         __le32 interface_version;
325         __le32 firmware_version;
326         __le32 max_requests;
327         __le32 request_size;
328         __le32 max_sg_count;
329         __le32 data_transfer_length;
330         __le32 alignment_mask;
331         __le32 max_devices;
332         __le32 sdram_size;
333 };
334
335 struct hpt_iop_request_set_config
336 {
337         struct hpt_iop_request_header header;
338         __le32 iop_id;
339         __le32 vbus_id;
340         __le32 reserve[6];
341 };
342
343 struct hpt_iopsg
344 {
345         __le32 size;
346         __le32 eot; /* non-zero: end of table */
347         __le64 pci_address;
348 };
349
350 struct hpt_iop_request_block_command
351 {
352         struct hpt_iop_request_header header;
353         u8     channel;
354         u8     target;
355         u8     lun;
356         u8     pad1;
357         __le16 command; /* IOP_BLOCK_COMMAND_{READ,WRITE} */
358         __le16 sectors;
359         __le64 lba;
360         struct hpt_iopsg sg_list[1];
361 };
362
363 #define IOP_BLOCK_COMMAND_READ     1
364 #define IOP_BLOCK_COMMAND_WRITE    2
365 #define IOP_BLOCK_COMMAND_VERIFY   3
366 #define IOP_BLOCK_COMMAND_FLUSH    4
367 #define IOP_BLOCK_COMMAND_SHUTDOWN 5
368
369 struct hpt_iop_request_scsi_command
370 {
371         struct hpt_iop_request_header header;
372         u8     channel;
373         u8     target;
374         u8     lun;
375         u8     pad1;
376         u8     cdb[16];
377         __le32 dataxfer_length;
378         struct hpt_iopsg sg_list[1];
379 };
380
381 struct hpt_iop_request_ioctl_command
382 {
383         struct hpt_iop_request_header header;
384         __le32 ioctl_code;
385         __le32 inbuf_size;
386         __le32 outbuf_size;
387         __le32 bytes_returned;
388         u8     buf[1];
389         /* out data should be put at buf[(inbuf_size+3)&~3] */
390 };
391
392 #define HPTIOP_MAX_REQUESTS  256u
393
394 struct hptiop_request {
395         struct hptiop_request * next;
396         void *                  req_virt;
397         u32                     req_shifted_phy;
398         struct scsi_cmnd *      scp;
399         int                     index;
400 };
401
402 struct hpt_scsi_pointer {
403         int mapped;
404         int sgcnt;
405         dma_addr_t dma_handle;
406 };
407
408 #define HPT_SCP(scp) ((struct hpt_scsi_pointer *)&(scp)->SCp)
409
410 struct hptiop_hba {
411         struct hpt_iopmu __iomem * iop;
412         struct Scsi_Host * host;
413         struct pci_dev * pcidev;
414
415         struct list_head link;
416
417         /* IOP config info */
418         u32     firmware_version;
419         u32     sdram_size;
420         u32     max_devices;
421         u32     max_requests;
422         u32     max_request_size;
423         u32     max_sg_descriptors;
424
425         u32     req_size; /* host-allocated request buffer size */
426         int     initialized;
427         int     msg_done;
428
429         struct hptiop_request * req_list;
430         struct hptiop_request reqs[HPTIOP_MAX_REQUESTS];
431
432         /* used to free allocated dma area */
433         void *      dma_coherent;
434         dma_addr_t  dma_coherent_handle;
435
436         atomic_t    reset_count;
437         atomic_t    resetting;
438
439         wait_queue_head_t reset_wq;
440         wait_queue_head_t ioctl_wq;
441 };
442
443 struct hpt_ioctl_k
444 {
445         struct hptiop_hba * hba;
446         u32    ioctl_code;
447         u32    inbuf_size;
448         u32    outbuf_size;
449         void * inbuf;
450         void * outbuf;
451         u32  * bytes_returned;
452         void (*done)(struct hpt_ioctl_k *);
453         int    result; /* HPT_IOCTL_RESULT_ */
454 };
455
456 #define HPT_IOCTL_RESULT_OK         0
457 #define HPT_IOCTL_RESULT_FAILED     (-1)
458
459 #if 0
460 #define dprintk(fmt, args...) do { printk(fmt, ##args); } while(0)
461 #else
462 #define dprintk(fmt, args...)
463 #endif
464
465 #endif