3 * Denis Peter, MPL AG Switzerland
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 #include <asm/processor.h>
37 #ifdef CONFIG_SCSI_SYM53C8XX
38 #define SCSI_VEND_ID 0x1000
39 #ifndef CONFIG_SCSI_DEV_ID
40 #define SCSI_DEV_ID 0x0001
42 #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
44 #elif defined CONFIG_SATA_ULI5288
46 #define SCSI_VEND_ID 0x10b9
47 #define SCSI_DEV_ID 0x5288
49 #elif !defined(CONFIG_SCSI_AHCI_PLAT)
50 #error no scsi device defined
54 static ccb tempccb
; /* temporary scsi command buffer */
56 static unsigned char tempbuff
[512]; /* temporary data buffer */
58 static int scsi_max_devs
; /* number of highest available scsi device */
60 static int scsi_curr_dev
; /* current device */
62 static block_dev_desc_t scsi_dev_desc
[CONFIG_SYS_SCSI_MAX_DEVICE
];
64 /********************************************************************************
65 * forward declerations of some Setup Routines
67 void scsi_setup_test_unit_ready(ccb
* pccb
);
68 void scsi_setup_read_capacity(ccb
* pccb
);
69 void scsi_setup_read6(ccb
* pccb
, unsigned long start
, unsigned short blocks
);
70 void scsi_setup_read_ext(ccb
* pccb
, unsigned long start
, unsigned short blocks
);
71 void scsi_setup_inquiry(ccb
* pccb
);
72 void scsi_ident_cpy (unsigned char *dest
, unsigned char *src
, unsigned int len
);
75 ulong
scsi_read(int device
, ulong blknr
, ulong blkcnt
, void *buffer
);
78 /*********************************************************************************
79 * (re)-scan the scsi bus and reports scsi device info
80 * to the user if mode = 1
82 void scsi_scan(int mode
)
84 unsigned char i
,perq
,modi
,lun
;
85 unsigned long capacity
,blksz
;
86 ccb
* pccb
=(ccb
*)&tempccb
;
89 printf("scanning bus for devices...\n");
91 for(i
=0;i
<CONFIG_SYS_SCSI_MAX_DEVICE
;i
++) {
92 scsi_dev_desc
[i
].target
=0xff;
93 scsi_dev_desc
[i
].lun
=0xff;
94 scsi_dev_desc
[i
].lba
=0;
95 scsi_dev_desc
[i
].blksz
=0;
96 scsi_dev_desc
[i
].type
=DEV_TYPE_UNKNOWN
;
97 scsi_dev_desc
[i
].vendor
[0]=0;
98 scsi_dev_desc
[i
].product
[0]=0;
99 scsi_dev_desc
[i
].revision
[0]=0;
100 scsi_dev_desc
[i
].removable
=FALSE
;
101 scsi_dev_desc
[i
].if_type
=IF_TYPE_SCSI
;
102 scsi_dev_desc
[i
].dev
=i
;
103 scsi_dev_desc
[i
].part_type
=PART_TYPE_UNKNOWN
;
104 scsi_dev_desc
[i
].block_read
=scsi_read
;
107 for(i
=0;i
<CONFIG_SYS_SCSI_MAX_SCSI_ID
;i
++) {
109 for(lun
=0;lun
<CONFIG_SYS_SCSI_MAX_LUN
;lun
++) {
111 pccb
->pdata
=(unsigned char *)&tempbuff
;
113 scsi_setup_inquiry(pccb
);
114 if(scsi_exec(pccb
)!=TRUE
) {
115 if(pccb
->contr_stat
==SCSI_SEL_TIME_OUT
) {
116 debug ("Selection timeout ID %d\n",pccb
->target
);
117 continue; /* selection timeout => assuming no device present */
119 scsi_print_error(pccb
);
124 if((perq
& 0x1f)==0x1f) {
125 continue; /* skip unknown devices */
127 if((modi
&0x80)==0x80) /* drive is removable */
128 scsi_dev_desc
[scsi_max_devs
].removable
=TRUE
;
129 /* get info for this device */
130 scsi_ident_cpy((unsigned char *)&scsi_dev_desc
[scsi_max_devs
].vendor
[0],
132 scsi_ident_cpy((unsigned char *)&scsi_dev_desc
[scsi_max_devs
].product
[0],
134 scsi_ident_cpy((unsigned char *)&scsi_dev_desc
[scsi_max_devs
].revision
[0],
136 scsi_dev_desc
[scsi_max_devs
].target
=pccb
->target
;
137 scsi_dev_desc
[scsi_max_devs
].lun
=pccb
->lun
;
140 scsi_setup_test_unit_ready(pccb
);
141 if(scsi_exec(pccb
)!=TRUE
) {
142 if(scsi_dev_desc
[scsi_max_devs
].removable
==TRUE
) {
143 scsi_dev_desc
[scsi_max_devs
].type
=perq
;
146 scsi_print_error(pccb
);
150 scsi_setup_read_capacity(pccb
);
151 if(scsi_exec(pccb
)!=TRUE
) {
152 scsi_print_error(pccb
);
155 capacity
=((unsigned long)tempbuff
[0]<<24)|((unsigned long)tempbuff
[1]<<16)|
156 ((unsigned long)tempbuff
[2]<<8)|((unsigned long)tempbuff
[3]);
157 blksz
=((unsigned long)tempbuff
[4]<<24)|((unsigned long)tempbuff
[5]<<16)|
158 ((unsigned long)tempbuff
[6]<<8)|((unsigned long)tempbuff
[7]);
159 scsi_dev_desc
[scsi_max_devs
].lba
=capacity
;
160 scsi_dev_desc
[scsi_max_devs
].blksz
=blksz
;
161 scsi_dev_desc
[scsi_max_devs
].type
=perq
;
162 init_part(&scsi_dev_desc
[scsi_max_devs
]);
165 printf (" Device %d: ", scsi_max_devs
);
166 dev_print(&scsi_dev_desc
[scsi_max_devs
]);
182 busdevfunc
=pci_find_device(SCSI_VEND_ID
,SCSI_DEV_ID
,0); /* get PCI Device ID */
184 printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID
,SCSI_DEV_ID
);
189 printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",SCSI_VEND_ID
,SCSI_DEV_ID
,(busdevfunc
>>16)&0xFF,(busdevfunc
>>11)&0x1F,(busdevfunc
>>8)&0x7);
192 scsi_low_level_init(busdevfunc
);
197 #ifdef CONFIG_PARTITIONS
198 block_dev_desc_t
* scsi_get_dev(int dev
)
200 return (dev
< CONFIG_SYS_SCSI_MAX_DEVICE
) ? &scsi_dev_desc
[dev
] : NULL
;
204 /******************************************************************************
205 * scsi boot command intepreter. Derived from diskboot
207 int do_scsiboot (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
209 return common_diskboot(cmdtp
, "scsi", argc
, argv
);
212 /*********************************************************************************
213 * scsi command intepreter
215 int do_scsi (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
220 return CMD_RET_USAGE
;
223 if (strncmp(argv
[1],"res",3) == 0) {
224 printf("\nReset SCSI\n");
229 if (strncmp(argv
[1],"inf",3) == 0) {
231 for (i
=0; i
<CONFIG_SYS_SCSI_MAX_DEVICE
; ++i
) {
232 if(scsi_dev_desc
[i
].type
==DEV_TYPE_UNKNOWN
)
233 continue; /* list only known devices */
234 printf ("SCSI dev. %d: ", i
);
235 dev_print(&scsi_dev_desc
[i
]);
239 if (strncmp(argv
[1],"dev",3) == 0) {
240 if ((scsi_curr_dev
< 0) || (scsi_curr_dev
>= CONFIG_SYS_SCSI_MAX_DEVICE
)) {
241 printf("\nno SCSI devices available\n");
244 printf ("\n Device %d: ", scsi_curr_dev
);
245 dev_print(&scsi_dev_desc
[scsi_curr_dev
]);
248 if (strncmp(argv
[1],"scan",4) == 0) {
252 if (strncmp(argv
[1],"part",4) == 0) {
254 for (ok
=0, dev
=0; dev
<CONFIG_SYS_SCSI_MAX_DEVICE
; ++dev
) {
255 if (scsi_dev_desc
[dev
].type
!=DEV_TYPE_UNKNOWN
) {
259 debug ("print_part of %x\n",dev
);
260 print_part(&scsi_dev_desc
[dev
]);
264 printf("\nno SCSI devices available\n");
267 return CMD_RET_USAGE
;
269 if (strncmp(argv
[1],"dev",3) == 0) {
270 int dev
= (int)simple_strtoul(argv
[2], NULL
, 10);
271 printf ("\nSCSI device %d: ", dev
);
272 if (dev
>= CONFIG_SYS_SCSI_MAX_DEVICE
) {
273 printf("unknown device\n");
276 printf ("\n Device %d: ", dev
);
277 dev_print(&scsi_dev_desc
[dev
]);
278 if(scsi_dev_desc
[dev
].type
== DEV_TYPE_UNKNOWN
) {
282 printf("... is now current device\n");
285 if (strncmp(argv
[1],"part",4) == 0) {
286 int dev
= (int)simple_strtoul(argv
[2], NULL
, 10);
287 if(scsi_dev_desc
[dev
].type
!= DEV_TYPE_UNKNOWN
) {
288 print_part(&scsi_dev_desc
[dev
]);
291 printf ("\nSCSI device %d not available\n", dev
);
295 return CMD_RET_USAGE
;
297 /* at least 4 args */
298 if (strcmp(argv
[1],"read") == 0) {
299 ulong addr
= simple_strtoul(argv
[2], NULL
, 16);
300 ulong blk
= simple_strtoul(argv
[3], NULL
, 16);
301 ulong cnt
= simple_strtoul(argv
[4], NULL
, 16);
303 printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
304 scsi_curr_dev
, blk
, cnt
);
305 n
= scsi_read(scsi_curr_dev
, blk
, cnt
, (ulong
*)addr
);
306 printf ("%ld blocks read: %s\n",n
,(n
==cnt
) ? "OK" : "ERROR");
310 return CMD_RET_USAGE
;
313 /****************************************************************************************
317 #define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
319 ulong
scsi_read(int device
, ulong blknr
, ulong blkcnt
, void *buffer
)
321 ulong start
,blks
, buf_addr
;
322 unsigned short smallblks
;
323 ccb
* pccb
=(ccb
*)&tempccb
;
327 pccb
->target
=scsi_dev_desc
[device
].target
;
328 pccb
->lun
=scsi_dev_desc
[device
].lun
;
329 buf_addr
=(unsigned long)buffer
;
332 debug ("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device
,start
,blks
,(unsigned long)buffer
);
334 pccb
->pdata
=(unsigned char *)buf_addr
;
335 if(blks
>SCSI_MAX_READ_BLK
) {
336 pccb
->datalen
=scsi_dev_desc
[device
].blksz
* SCSI_MAX_READ_BLK
;
337 smallblks
=SCSI_MAX_READ_BLK
;
338 scsi_setup_read_ext(pccb
,start
,smallblks
);
339 start
+=SCSI_MAX_READ_BLK
;
340 blks
-=SCSI_MAX_READ_BLK
;
343 pccb
->datalen
=scsi_dev_desc
[device
].blksz
* blks
;
344 smallblks
=(unsigned short) blks
;
345 scsi_setup_read_ext(pccb
,start
,smallblks
);
349 debug ("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start
,smallblks
,buf_addr
);
350 if(scsi_exec(pccb
)!=TRUE
) {
351 scsi_print_error(pccb
);
355 buf_addr
+=pccb
->datalen
;
357 debug ("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start
,smallblks
,buf_addr
);
361 /* copy src to dest, skipping leading and trailing blanks
362 * and null terminate the string
364 void scsi_ident_cpy (unsigned char *dest
, unsigned char *src
, unsigned int len
)
380 for( ; start
<=end
; start
++) {
387 /* Trim trailing blanks, and NUL-terminate string
389 void scsi_trim_trail (unsigned char *str
, unsigned int len
)
391 unsigned char *p
= str
+ len
- 1;
402 /************************************************************************************
403 * Some setup (fill-in) routines
405 void scsi_setup_test_unit_ready(ccb
* pccb
)
407 pccb
->cmd
[0]=SCSI_TST_U_RDY
;
408 pccb
->cmd
[1]=pccb
->lun
<<5;
414 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
417 void scsi_setup_read_capacity(ccb
* pccb
)
419 pccb
->cmd
[0]=SCSI_RD_CAPAC
;
420 pccb
->cmd
[1]=pccb
->lun
<<5;
430 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
434 void scsi_setup_read_ext(ccb
* pccb
, unsigned long start
, unsigned short blocks
)
436 pccb
->cmd
[0]=SCSI_READ10
;
437 pccb
->cmd
[1]=pccb
->lun
<<5;
438 pccb
->cmd
[2]=((unsigned char) (start
>>24))&0xff;
439 pccb
->cmd
[3]=((unsigned char) (start
>>16))&0xff;
440 pccb
->cmd
[4]=((unsigned char) (start
>>8))&0xff;
441 pccb
->cmd
[5]=((unsigned char) (start
))&0xff;
443 pccb
->cmd
[7]=((unsigned char) (blocks
>>8))&0xff;
444 pccb
->cmd
[8]=(unsigned char) blocks
& 0xff;
447 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
448 debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
449 pccb
->cmd
[0],pccb
->cmd
[1],
450 pccb
->cmd
[2],pccb
->cmd
[3],pccb
->cmd
[4],pccb
->cmd
[5],
451 pccb
->cmd
[7],pccb
->cmd
[8]);
454 void scsi_setup_read6(ccb
* pccb
, unsigned long start
, unsigned short blocks
)
456 pccb
->cmd
[0]=SCSI_READ6
;
457 pccb
->cmd
[1]=pccb
->lun
<<5 | (((unsigned char)(start
>>16))&0x1f);
458 pccb
->cmd
[2]=((unsigned char) (start
>>8))&0xff;
459 pccb
->cmd
[3]=((unsigned char) (start
))&0xff;
460 pccb
->cmd
[4]=(unsigned char) blocks
& 0xff;
463 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
464 debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
465 pccb
->cmd
[0],pccb
->cmd
[1],
466 pccb
->cmd
[2],pccb
->cmd
[3],pccb
->cmd
[4]);
470 void scsi_setup_inquiry(ccb
* pccb
)
472 pccb
->cmd
[0]=SCSI_INQUIRY
;
473 pccb
->cmd
[1]=pccb
->lun
<<5;
476 if(pccb
->datalen
>255)
479 pccb
->cmd
[4]=(unsigned char)pccb
->datalen
;
482 pccb
->msgout
[0]=SCSI_IDENTIFY
; /* NOT USED */
489 "reset - reset SCSI controller\n"
490 "scsi info - show available SCSI devices\n"
491 "scsi scan - (re-)scan SCSI bus\n"
492 "scsi device [dev] - show or set current device\n"
493 "scsi part [dev] - print partition table of one or all SCSI devices\n"
494 "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
495 " to memory address `addr'"
499 scsiboot
, 3, 1, do_scsiboot
,
500 "boot from SCSI device",