summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/eata_generic.h
blob: 5016af5cf860886bdebfded4193753a935777b04 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
/********************************************************
* Header file for eata_dma.c and eata_pio.c		*
* Linux EATA SCSI drivers				*
* (c) 1993-96 Michael Neuffer                           *
*             mike@i-Connect.Net                        *
*             neuffer@mail.uni-mainz.de                 *
*********************************************************
* last change: 96/08/14                                 *
********************************************************/


#ifndef _EATA_GENERIC_H
#define _EATA_GENERIC_H



/*********************************************
 * Misc. definitions			     *
 *********************************************/

#define R_LIMIT 0x20000

#define MAXISA	   4
#define MAXEISA	  16  
#define MAXPCI	  16
#define MAXIRQ	  16 
#define MAXTARGET 16
#define MAXCHANNEL 3

#define IS_ISA	   'I'
#define IS_EISA	   'E'
#define IS_PCI	   'P'

#define BROKEN_INQUIRY	1

#define BUSMASTER       0xff
#define PIO             0xfe

#define EATA_SIGNATURE	0x45415441     /* BIG ENDIAN coded "EATA" sig.	 */

#define DPT_ID1         0x12
#define DPT_ID2         0x14

#define ATT_ID1         0x06
#define ATT_ID2         0x94
#define ATT_ID3         0x0

#define NEC_ID1         0x38
#define NEC_ID2         0xa3
#define NEC_ID3         0x82

 
#define EATA_CP_SIZE	 44

#define MAX_PCI_DEVICES  32	       /* Maximum # Of Devices Per Bus	 */
#define MAX_METHOD_2	 16	       /* Max Devices For Method 2	 */
#define MAX_PCI_BUS	 16	       /* Maximum # Of Busses Allowed	 */

#define SG_SIZE		 64 
#define SG_SIZE_BIG	 252	       /* max. 8096 elements, 64k */

#define UPPER_DEVICE_QUEUE_LIMIT 64    /* The limit we have to set for the 
					* device queue to keep the broken 
					* midlevel SCSI code from producing
					* bogus timeouts
					*/

#define TYPE_DISK_QUEUE  16
#define TYPE_TAPE_QUEUE  4
#define TYPE_ROM_QUEUE   4
#define TYPE_OTHER_QUEUE 2

#define FREE	         0
#define OK	         0
#define NO_TIMEOUT       0
#define USED	         1
#define TIMEOUT	         2
#define RESET	         4
#define LOCKED	         8
#define ABORTED          16

#define READ             0
#define WRITE            1
#define OTHER            2

#define HD(cmd)	 ((hostdata *)&(cmd->device->host->hostdata))
#define CD(cmd)	 ((struct eata_ccb *)(cmd->host_scribble))
#define SD(host) ((hostdata *)&(host->hostdata))

/***********************************************
 *    EATA Command & Register definitions      *
 ***********************************************/
#define PCI_REG_DPTconfig	 0x40	 
#define PCI_REG_PumpModeAddress	 0x44	 
#define PCI_REG_PumpModeData	 0x48	 
#define PCI_REG_ConfigParam1	 0x50	 
#define PCI_REG_ConfigParam2	 0x54	 


#define EATA_CMD_PIO_SETUPTEST	 0xc6
#define EATA_CMD_PIO_READ_CONFIG 0xf0
#define EATA_CMD_PIO_SET_CONFIG	 0xf1
#define EATA_CMD_PIO_SEND_CP	 0xf2
#define EATA_CMD_PIO_RECEIVE_SP	 0xf3
#define EATA_CMD_PIO_TRUNC	 0xf4

#define EATA_CMD_RESET		 0xf9
#define EATA_CMD_IMMEDIATE	 0xfa

#define EATA_CMD_DMA_READ_CONFIG 0xfd
#define EATA_CMD_DMA_SET_CONFIG	 0xfe
#define EATA_CMD_DMA_SEND_CP	 0xff

#define ECS_EMULATE_SENSE	 0xd4

#define EATA_GENERIC_ABORT       0x00 
#define EATA_SPECIFIC_RESET      0x01
#define EATA_BUS_RESET           0x02
#define EATA_SPECIFIC_ABORT      0x03
#define EATA_QUIET_INTR          0x04
#define EATA_COLD_BOOT_HBA       0x06	   /* Only as a last resort	*/
#define EATA_FORCE_IO            0x07

#define HA_CTRLREG     0x206       /* control register for HBA    */
#define HA_CTRL_DISINT 0x02        /* CTRLREG: disable interrupts */
#define HA_CTRL_RESCPU 0x04        /* CTRLREG: reset processor    */
#define HA_CTRL_8HEADS 0x08        /* CTRLREG: set for drives with* 
				    * >=8 heads (WD1003 rudimentary :-) */

#define HA_WCOMMAND    0x07	   /* command register offset	*/
#define HA_WIFC        0x06	   /* immediate command offset  */
#define HA_WCODE       0x05 
#define HA_WCODE2      0x04 
#define HA_WDMAADDR    0x02	   /* DMA address LSB offset	*/  
#define HA_RAUXSTAT    0x08	   /* aux status register offset*/
#define HA_RSTATUS     0x07	   /* status register offset	*/
#define HA_RDATA       0x00	   /* data register (16bit)	*/
#define HA_WDATA       0x00	   /* data register (16bit)	*/

#define HA_ABUSY       0x01	   /* aux busy bit		*/
#define HA_AIRQ	       0x02	   /* aux IRQ pending bit	*/
#define HA_SERROR      0x01	   /* pr. command ended in error*/
#define HA_SMORE       0x02	   /* more data soon to come	*/
#define HA_SCORR       0x04	   /* data corrected		*/
#define HA_SDRQ	       0x08	   /* data request active	*/
#define HA_SSC	       0x10	   /* seek complete		*/
#define HA_SFAULT      0x20	   /* write fault		*/
#define HA_SREADY      0x40	   /* drive ready		*/
#define HA_SBUSY       0x80	   /* drive busy		*/
#define HA_SDRDY       HA_SSC+HA_SREADY+HA_SDRQ 

/**********************************************
 * Message definitions			      *
 **********************************************/

#define HA_NO_ERROR	 0x00	/* No Error				*/
#define HA_ERR_SEL_TO	 0x01	/* Selection Timeout			*/
#define HA_ERR_CMD_TO	 0x02	/* Command Timeout			*/
#define HA_BUS_RESET	 0x03	/* SCSI Bus Reset Received		*/
#define HA_INIT_POWERUP	 0x04	/* Initial Controller Power-up		*/
#define HA_UNX_BUSPHASE	 0x05	/* Unexpected Bus Phase			*/
#define HA_UNX_BUS_FREE	 0x06	/* Unexpected Bus Free			*/
#define HA_BUS_PARITY	 0x07	/* Bus Parity Error			*/
#define HA_SCSI_HUNG	 0x08	/* SCSI Hung				*/
#define HA_UNX_MSGRJCT	 0x09	/* Unexpected Message Rejected		*/
#define HA_RESET_STUCK	 0x0a	/* SCSI Bus Reset Stuck			*/
#define HA_RSENSE_FAIL	 0x0b	/* Auto Request-Sense Failed		*/
#define HA_PARITY_ERR	 0x0c	/* Controller Ram Parity Error		*/
#define HA_CP_ABORT_NA	 0x0d	/* Abort Message sent to non-active cmd */
#define HA_CP_ABORTED	 0x0e	/* Abort Message sent to active cmd	*/
#define HA_CP_RESET_NA	 0x0f	/* Reset Message sent to non-active cmd */
#define HA_CP_RESET	 0x10	/* Reset Message sent to active cmd	*/
#define HA_ECC_ERR	 0x11	/* Controller Ram ECC Error		*/
#define HA_PCI_PARITY	 0x12	/* PCI Parity Error			*/
#define HA_PCI_MABORT	 0x13	/* PCI Master Abort			*/
#define HA_PCI_TABORT	 0x14	/* PCI Target Abort			*/
#define HA_PCI_STABORT	 0x15	/* PCI Signaled Target Abort		*/

/**********************************************
 *  Other  definitions			      *
 **********************************************/

struct reg_bit {      /* reading this one will clear the interrupt    */
    __u8 error:1;     /* previous command ended in an error	      */
    __u8 more:1;      /* more DATA coming soon, poll BSY & DRQ (PIO)  */
    __u8 corr:1;      /* data read was successfully corrected with ECC*/
    __u8 drq:1;	      /* data request active  */     
    __u8 sc:1;	      /* seek complete	      */
    __u8 fault:1;     /* write fault	      */
    __u8 ready:1;     /* drive ready	      */
    __u8 busy:1;      /* controller busy      */
};

struct reg_abit {     /* reading this won't clear the interrupt */
    __u8 abusy:1;     /* auxiliary busy				*/
    __u8 irq:1;	      /* set when drive interrupt is asserted	*/
    __u8 dummy:6;
};

struct eata_register {	    /* EATA register set */
    __u8 data_reg[2];	    /* R, couldn't figure this one out		*/
    __u8 cp_addr[4];	    /* W, CP address register			*/
    union { 
	__u8 command;	    /* W, command code: [read|set] conf, send CP*/
	struct reg_bit status;	/* R, see register_bit1			*/
	__u8 statusbyte;
    } ovr;   
    struct reg_abit aux_stat; /* R, see register_bit2			*/
};

struct get_conf {	      /* Read Configuration Array		*/
    __u32  len;		      /* Should return 0x22, 0x24, etc		*/
    __u32 signature;	      /* Signature MUST be "EATA"		*/
    __u8    version2:4,
	     version:4;	      /* EATA Version level			*/
    __u8 OCS_enabled:1,	      /* Overlap Command Support enabled	*/
	 TAR_support:1,	      /* SCSI Target Mode supported		*/
	      TRNXFR:1,	      /* Truncate Transfer Cmd not necessary	*
			       * Only used in PIO Mode			*/
	MORE_support:1,	      /* MORE supported (only PIO Mode)		*/
	 DMA_support:1,	      /* DMA supported Driver uses only		*
			       * this mode				*/
	   DMA_valid:1,	      /* DRQ value in Byte 30 is valid		*/
		 ATA:1,	      /* ATA device connected (not supported)	*/
	   HAA_valid:1;	      /* Hostadapter Address is valid		*/

    __u16 cppadlen;	      /* Number of pad bytes send after CD data *
			       * set to zero for DMA commands		*/
    __u8 scsi_id[4];	      /* SCSI ID of controller 2-0 Byte 0 res.	*
			       * if not, zero is returned		*/
    __u32  cplen;	      /* CP length: number of valid cp bytes	*/
    __u32  splen;	      /* Number of bytes returned after		* 
			       * Receive SP command			*/
    __u16 queuesiz;	      /* max number of queueable CPs		*/
    __u16 dummy;
    __u16 SGsiz;	      /* max number of SG table entries		*/
    __u8    IRQ:4,	      /* IRQ used this HA			*/
	 IRQ_TR:1,	      /* IRQ Trigger: 0=edge, 1=level		*/
	 SECOND:1,	      /* This is a secondary controller		*/
    DMA_channel:2;	      /* DRQ index, DRQ is 2comp of DRQX	*/
    __u8 sync;		      /* device at ID 7 tru 0 is running in	*
			       * synchronous mode, this will disappear	*/
    __u8   DSBLE:1,	      /* ISA i/o addressing is disabled		*/
	 FORCADR:1,	      /* i/o address has been forced		*/
	  SG_64K:1,
	  SG_UAE:1,
		:4;
    __u8  MAX_ID:5,	      /* Max number of SCSI target IDs		*/
	MAX_CHAN:3;	      /* Number of SCSI busses on HBA		*/
    __u8 MAX_LUN;	      /* Max number of LUNs			*/
    __u8	:3,
	 AUTOTRM:1,
	 M1_inst:1,
	 ID_qest:1,	      /* Raidnum ID is questionable		*/
	  is_PCI:1,	      /* HBA is PCI				*/
	 is_EISA:1;	      /* HBA is EISA				*/
    __u8 RAIDNUM;             /* unique HBA identifier                  */
    __u8 unused[474]; 
};

struct eata_sg_list
{
    __u32 data;
    __u32 len;
};

struct eata_ccb {	      /* Send Command Packet structure	    */
 
    __u8 SCSI_Reset:1,	      /* Cause a SCSI Bus reset on the cmd	*/
	   HBA_Init:1,	      /* Cause Controller to reinitialize	*/
       Auto_Req_Sen:1,	      /* Do Auto Request Sense on errors	*/
	    scatter:1,	      /* Data Ptr points to a SG Packet		*/
	     Resrvd:1,	      /* RFU					*/
	  Interpret:1,	      /* Interpret the SCSI cdb of own use	*/
	    DataOut:1,	      /* Data Out phase with command		*/
	     DataIn:1;	      /* Data In phase with command		*/
    __u8 reqlen;	      /* Request Sense Length			* 
			       * Valid if Auto_Req_Sen=1		*/
    __u8 unused[3];
    __u8  FWNEST:1,	      /* send cmd to phys RAID component	*/
	 unused2:7;
    __u8 Phsunit:1,	      /* physical unit on mirrored pair		*/
	    I_AT:1,	      /* inhibit address translation		*/
	 I_HBA_C:1,	      /* HBA inhibit caching			*/
	 unused3:5;

    __u8     cp_id:5,	      /* SCSI Device ID of target		*/ 
	cp_channel:3;	      /* SCSI Channel # of HBA			*/
    __u8    cp_lun:3,
		  :2,
	 cp_luntar:1,	      /* CP is for target ROUTINE		*/
	 cp_dispri:1,	      /* Grant disconnect privilege		*/
       cp_identify:1;	      /* Always TRUE				*/
    __u8 cp_msg1;	      /* Message bytes 0-3			*/
    __u8 cp_msg2;
    __u8 cp_msg3;
    __u8 cp_cdb[12];	      /* Command Descriptor Block		*/
    __u32 cp_datalen;	      /* Data Transfer Length			*
			       * If scatter=1 len of sg package		*/
    void *cp_viraddr;	      /* address of this ccb			*/
    __u32 cp_dataDMA;	      /* Data Address, if scatter=1		*
			       * address of scatter packet		*/
    __u32 cp_statDMA;	      /* address for Status Packet		*/ 
    __u32 cp_reqDMA;	      /* Request Sense Address, used if		*
			       * CP command ends with error		*/
    /* Additional CP info begins here */
    __u32 timestamp;	      /* Needed to measure command latency	*/
    __u32 timeout;
    __u8 sizeindex;
    __u8 rw_latency;
    __u8 retries;
    __u8 status;	      /* status of this queueslot		*/
    struct scsi_cmnd *cmd;    /* address of cmd				*/
    struct eata_sg_list *sg_list;
};


struct eata_sp {
    __u8 hba_stat:7,	      /* HBA status				*/
	      EOC:1;	      /* True if command finished		*/
    __u8 scsi_stat;	      /* Target SCSI status			*/
    __u8 reserved[2];
    __u32  residue_len;	      /* Number of bytes not transferred	*/
    struct eata_ccb *ccb;     /* Address set in COMMAND PACKET		*/
    __u8 msg[12];
};

typedef struct hstd {
    __u8   vendor[9];
    __u8   name[18];
    __u8   revision[6];
    __u8   EATA_revision;
    __u32  firmware_revision;
    __u8   HBA_number;
    __u8   bustype;		 /* bustype of HBA	       */
    __u8   channel;		 /* # of avail. scsi channels  */
    __u8   state;		 /* state of HBA	       */
    __u8   primary;		 /* true if primary	       */
    __u8        more_support:1,  /* HBA supports MORE flag     */
           immediate_support:1,  /* HBA supports IMMEDIATE CMDs*/
              broken_INQUIRY:1;	 /* This is an EISA HBA with   *
				  * broken INQUIRY	       */
    __u8   do_latency;		 /* Latency measurement flag   */
    __u32  reads[13];
    __u32  writes[13];
    __u32  reads_lat[12][4];
    __u32  writes_lat[12][4];
    __u32  all_lat[4];
    __u8   resetlevel[MAXCHANNEL]; 
    __u32  last_ccb;		 /* Last used ccb	       */
    __u32  cplen;		 /* size of CP in words	       */
    __u16  cppadlen;		 /* pad length of cp in words  */
    __u16  queuesize;
    __u16  sgsize;               /* # of entries in the SG list*/
    __u16  devflags;		 /* bits set for detected devices */
    __u8   hostid;		 /* SCSI ID of HBA	       */
    __u8   moresupport;		 /* HBA supports MORE flag     */
    struct Scsi_Host *next;	    
    struct Scsi_Host *prev;
    struct pci_dev *pdev;	/* PCI device or NULL for non PCI */
    struct eata_sp sp;		 /* status packet	       */ 
    struct eata_ccb ccb[0];	 /* ccb array begins here      */
}hostdata;

/* structure for max. 2 emulated drives */
struct drive_geom_emul {
    __u8  trans;		 /* translation flag 1=transl */
    __u8  channel;		 /* SCSI channel number	      */
    __u8  HBA;			 /* HBA number (prim/sec)     */
    __u8  id;			 /* drive id		      */
    __u8  lun;			 /* drive lun		      */
    __u32 heads;		 /* number of heads	      */
    __u32 sectors;		 /* number of sectors	      */
    __u32 cylinder;		 /* number of cylinders	      */
};

struct geom_emul {
    __u8 bios_drives;		 /* number of emulated drives */
    struct drive_geom_emul drv[2]; /* drive structures	      */
};

#endif /* _EATA_GENERIC_H */

/*
 * Overrides for Emacs so that we almost follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-indent-level: 4
 * c-brace-imaginary-offset: 0
 * c-brace-offset: -4
 * c-argdecl-indent: 4
 * c-label-offset: -4
 * c-continued-statement-offset: 4
 * c-continued-brace-offset: 0
 * tab-width: 8
 * End:
 */