scsi.c 21 KB

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  1. /*
  2. * (C) Copyright 2001
  3. * Denis Peter, MPL AG Switzerland
  4. *
  5. * SPDX-License-Identifier: GPL-2.0+
  6. */
  7. /*
  8. * SCSI support.
  9. */
  10. #include <common.h>
  11. #include <command.h>
  12. #include <inttypes.h>
  13. #include <asm/processor.h>
  14. #include <scsi.h>
  15. #include <image.h>
  16. #include <pci.h>
  17. #ifdef CONFIG_SCSI_DEV_LIST
  18. #define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
  19. #else
  20. #ifdef CONFIG_SCSI_SYM53C8XX
  21. #define SCSI_VEND_ID 0x1000
  22. #ifndef CONFIG_SCSI_DEV_ID
  23. #define SCSI_DEV_ID 0x0001
  24. #else
  25. #define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
  26. #endif
  27. #elif defined CONFIG_SATA_ULI5288
  28. #define SCSI_VEND_ID 0x10b9
  29. #define SCSI_DEV_ID 0x5288
  30. #elif !defined(CONFIG_SCSI_AHCI_PLAT)
  31. #error no scsi device defined
  32. #endif
  33. #define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
  34. #endif
  35. #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
  36. const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
  37. #endif
  38. static ccb tempccb; /* temporary scsi command buffer */
  39. static unsigned char tempbuff[512]; /* temporary data buffer */
  40. static int scsi_max_devs; /* number of highest available scsi device */
  41. static int scsi_curr_dev; /* current device */
  42. static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
  43. /********************************************************************************
  44. * forward declerations of some Setup Routines
  45. */
  46. void scsi_setup_test_unit_ready(ccb * pccb);
  47. void scsi_setup_read6(ccb * pccb, lbaint_t start, unsigned short blocks);
  48. void scsi_setup_read_ext(ccb * pccb, lbaint_t start, unsigned short blocks);
  49. void scsi_setup_read16(ccb * pccb, lbaint_t start, unsigned long blocks);
  50. static void scsi_setup_write_ext(ccb *pccb, lbaint_t start,
  51. unsigned short blocks);
  52. void scsi_setup_inquiry(ccb * pccb);
  53. void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
  54. static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
  55. unsigned long *blksz);
  56. static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
  57. lbaint_t blkcnt, void *buffer);
  58. static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
  59. lbaint_t blkcnt, const void *buffer);
  60. /*********************************************************************************
  61. * (re)-scan the scsi bus and reports scsi device info
  62. * to the user if mode = 1
  63. */
  64. void scsi_scan(int mode)
  65. {
  66. unsigned char i,perq,modi,lun;
  67. lbaint_t capacity;
  68. unsigned long blksz;
  69. ccb* pccb=(ccb *)&tempccb;
  70. if(mode==1) {
  71. printf("scanning bus for devices...\n");
  72. }
  73. for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
  74. scsi_dev_desc[i].target=0xff;
  75. scsi_dev_desc[i].lun=0xff;
  76. scsi_dev_desc[i].lba=0;
  77. scsi_dev_desc[i].blksz=0;
  78. scsi_dev_desc[i].log2blksz =
  79. LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz));
  80. scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
  81. scsi_dev_desc[i].vendor[0]=0;
  82. scsi_dev_desc[i].product[0]=0;
  83. scsi_dev_desc[i].revision[0]=0;
  84. scsi_dev_desc[i].removable = false;
  85. scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
  86. scsi_dev_desc[i].devnum = i;
  87. scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
  88. scsi_dev_desc[i].block_read=scsi_read;
  89. scsi_dev_desc[i].block_write = scsi_write;
  90. }
  91. scsi_max_devs=0;
  92. for(i=0;i<CONFIG_SYS_SCSI_MAX_SCSI_ID;i++) {
  93. pccb->target=i;
  94. for(lun=0;lun<CONFIG_SYS_SCSI_MAX_LUN;lun++) {
  95. pccb->lun=lun;
  96. pccb->pdata=(unsigned char *)&tempbuff;
  97. pccb->datalen=512;
  98. scsi_setup_inquiry(pccb);
  99. if (scsi_exec(pccb) != true) {
  100. if(pccb->contr_stat==SCSI_SEL_TIME_OUT) {
  101. debug ("Selection timeout ID %d\n",pccb->target);
  102. continue; /* selection timeout => assuming no device present */
  103. }
  104. scsi_print_error(pccb);
  105. continue;
  106. }
  107. perq=tempbuff[0];
  108. modi=tempbuff[1];
  109. if((perq & 0x1f)==0x1f) {
  110. continue; /* skip unknown devices */
  111. }
  112. if((modi&0x80)==0x80) /* drive is removable */
  113. scsi_dev_desc[scsi_max_devs].removable=true;
  114. /* get info for this device */
  115. scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
  116. &tempbuff[8], 8);
  117. scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
  118. &tempbuff[16], 16);
  119. scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
  120. &tempbuff[32], 4);
  121. scsi_dev_desc[scsi_max_devs].target=pccb->target;
  122. scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
  123. pccb->datalen=0;
  124. scsi_setup_test_unit_ready(pccb);
  125. if (scsi_exec(pccb) != true) {
  126. if (scsi_dev_desc[scsi_max_devs].removable == true) {
  127. scsi_dev_desc[scsi_max_devs].type=perq;
  128. goto removable;
  129. }
  130. scsi_print_error(pccb);
  131. continue;
  132. }
  133. if (scsi_read_capacity(pccb, &capacity, &blksz)) {
  134. scsi_print_error(pccb);
  135. continue;
  136. }
  137. scsi_dev_desc[scsi_max_devs].lba=capacity;
  138. scsi_dev_desc[scsi_max_devs].blksz=blksz;
  139. scsi_dev_desc[scsi_max_devs].log2blksz =
  140. LOG2(scsi_dev_desc[scsi_max_devs].blksz);
  141. scsi_dev_desc[scsi_max_devs].type=perq;
  142. part_init(&scsi_dev_desc[scsi_max_devs]);
  143. removable:
  144. if(mode==1) {
  145. printf (" Device %d: ", scsi_max_devs);
  146. dev_print(&scsi_dev_desc[scsi_max_devs]);
  147. } /* if mode */
  148. scsi_max_devs++;
  149. } /* next LUN */
  150. }
  151. if(scsi_max_devs>0)
  152. scsi_curr_dev=0;
  153. else
  154. scsi_curr_dev = -1;
  155. printf("Found %d device(s).\n", scsi_max_devs);
  156. #ifndef CONFIG_SPL_BUILD
  157. setenv_ulong("scsidevs", scsi_max_devs);
  158. #endif
  159. }
  160. int scsi_get_disk_count(void)
  161. {
  162. return scsi_max_devs;
  163. }
  164. #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
  165. void scsi_init(void)
  166. {
  167. int busdevfunc = -1;
  168. int i;
  169. /*
  170. * Find a device from the list, this driver will support a single
  171. * controller.
  172. */
  173. for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
  174. /* get PCI Device ID */
  175. #ifdef CONFIG_DM_PCI
  176. struct udevice *dev;
  177. int ret;
  178. ret = dm_pci_find_device(scsi_device_list[i].vendor,
  179. scsi_device_list[i].device, 0, &dev);
  180. if (!ret) {
  181. busdevfunc = dm_pci_get_bdf(dev);
  182. break;
  183. }
  184. #else
  185. busdevfunc = pci_find_device(scsi_device_list[i].vendor,
  186. scsi_device_list[i].device,
  187. 0);
  188. #endif
  189. if (busdevfunc != -1)
  190. break;
  191. }
  192. if (busdevfunc == -1) {
  193. printf("Error: SCSI Controller(s) ");
  194. for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
  195. printf("%04X:%04X ",
  196. scsi_device_list[i].vendor,
  197. scsi_device_list[i].device);
  198. }
  199. printf("not found\n");
  200. return;
  201. }
  202. #ifdef DEBUG
  203. else {
  204. printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
  205. scsi_device_list[i].vendor,
  206. scsi_device_list[i].device,
  207. (busdevfunc >> 16) & 0xFF,
  208. (busdevfunc >> 11) & 0x1F,
  209. (busdevfunc >> 8) & 0x7);
  210. }
  211. #endif
  212. bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
  213. scsi_low_level_init(busdevfunc);
  214. scsi_scan(1);
  215. bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
  216. }
  217. #endif
  218. #ifdef CONFIG_PARTITIONS
  219. struct blk_desc *scsi_get_dev(int dev)
  220. {
  221. return (dev < CONFIG_SYS_SCSI_MAX_DEVICE) ? &scsi_dev_desc[dev] : NULL;
  222. }
  223. #endif
  224. /******************************************************************************
  225. * scsi boot command intepreter. Derived from diskboot
  226. */
  227. int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  228. {
  229. return common_diskboot(cmdtp, "scsi", argc, argv);
  230. }
  231. /*********************************************************************************
  232. * scsi command intepreter
  233. */
  234. int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  235. {
  236. switch (argc) {
  237. case 0:
  238. case 1:
  239. return CMD_RET_USAGE;
  240. case 2:
  241. if (strncmp(argv[1],"res",3) == 0) {
  242. printf("\nReset SCSI\n");
  243. scsi_bus_reset();
  244. scsi_scan(1);
  245. return 0;
  246. }
  247. if (strncmp(argv[1],"inf",3) == 0) {
  248. int i;
  249. for (i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; ++i) {
  250. if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
  251. continue; /* list only known devices */
  252. printf ("SCSI dev. %d: ", i);
  253. dev_print(&scsi_dev_desc[i]);
  254. }
  255. return 0;
  256. }
  257. if (strncmp(argv[1],"dev",3) == 0) {
  258. if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CONFIG_SYS_SCSI_MAX_DEVICE)) {
  259. printf("\nno SCSI devices available\n");
  260. return 1;
  261. }
  262. printf ("\n Device %d: ", scsi_curr_dev);
  263. dev_print(&scsi_dev_desc[scsi_curr_dev]);
  264. return 0;
  265. }
  266. if (strncmp(argv[1],"scan",4) == 0) {
  267. scsi_scan(1);
  268. return 0;
  269. }
  270. if (strncmp(argv[1],"part",4) == 0) {
  271. int dev, ok;
  272. for (ok=0, dev=0; dev<CONFIG_SYS_SCSI_MAX_DEVICE; ++dev) {
  273. if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
  274. ok++;
  275. if (dev)
  276. printf("\n");
  277. debug ("print_part of %x\n",dev);
  278. part_print(&scsi_dev_desc[dev]);
  279. }
  280. }
  281. if (!ok)
  282. printf("\nno SCSI devices available\n");
  283. return 1;
  284. }
  285. return CMD_RET_USAGE;
  286. case 3:
  287. if (strncmp(argv[1],"dev",3) == 0) {
  288. int dev = (int)simple_strtoul(argv[2], NULL, 10);
  289. printf ("\nSCSI device %d: ", dev);
  290. if (dev >= CONFIG_SYS_SCSI_MAX_DEVICE) {
  291. printf("unknown device\n");
  292. return 1;
  293. }
  294. printf ("\n Device %d: ", dev);
  295. dev_print(&scsi_dev_desc[dev]);
  296. if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
  297. return 1;
  298. }
  299. scsi_curr_dev = dev;
  300. printf("... is now current device\n");
  301. return 0;
  302. }
  303. if (strncmp(argv[1],"part",4) == 0) {
  304. int dev = (int)simple_strtoul(argv[2], NULL, 10);
  305. if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
  306. part_print(&scsi_dev_desc[dev]);
  307. }
  308. else {
  309. printf ("\nSCSI device %d not available\n", dev);
  310. }
  311. return 1;
  312. }
  313. return CMD_RET_USAGE;
  314. default:
  315. /* at least 4 args */
  316. if (strcmp(argv[1],"read") == 0) {
  317. ulong addr = simple_strtoul(argv[2], NULL, 16);
  318. ulong blk = simple_strtoul(argv[3], NULL, 16);
  319. ulong cnt = simple_strtoul(argv[4], NULL, 16);
  320. ulong n;
  321. printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
  322. scsi_curr_dev, blk, cnt);
  323. n = scsi_read(&scsi_dev_desc[scsi_curr_dev],
  324. blk, cnt, (ulong *)addr);
  325. printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
  326. return 0;
  327. } else if (strcmp(argv[1], "write") == 0) {
  328. ulong addr = simple_strtoul(argv[2], NULL, 16);
  329. ulong blk = simple_strtoul(argv[3], NULL, 16);
  330. ulong cnt = simple_strtoul(argv[4], NULL, 16);
  331. ulong n;
  332. printf("\nSCSI write: device %d block # %ld, "
  333. "count %ld ... ",
  334. scsi_curr_dev, blk, cnt);
  335. n = scsi_write(&scsi_dev_desc[scsi_curr_dev],
  336. blk, cnt, (ulong *)addr);
  337. printf("%ld blocks written: %s\n", n,
  338. (n == cnt) ? "OK" : "ERROR");
  339. return 0;
  340. }
  341. } /* switch */
  342. return CMD_RET_USAGE;
  343. }
  344. /****************************************************************************************
  345. * scsi_read
  346. */
  347. /* almost the maximum amount of the scsi_ext command.. */
  348. #define SCSI_MAX_READ_BLK 0xFFFF
  349. #define SCSI_LBA48_READ 0xFFFFFFF
  350. static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
  351. lbaint_t blkcnt, void *buffer)
  352. {
  353. int device = block_dev->devnum;
  354. lbaint_t start, blks;
  355. uintptr_t buf_addr;
  356. unsigned short smallblks = 0;
  357. ccb* pccb=(ccb *)&tempccb;
  358. device&=0xff;
  359. /* Setup device
  360. */
  361. pccb->target=scsi_dev_desc[device].target;
  362. pccb->lun=scsi_dev_desc[device].lun;
  363. buf_addr=(unsigned long)buffer;
  364. start=blknr;
  365. blks=blkcnt;
  366. debug("\nscsi_read: dev %d startblk " LBAF
  367. ", blccnt " LBAF " buffer %lx\n",
  368. device, start, blks, (unsigned long)buffer);
  369. do {
  370. pccb->pdata=(unsigned char *)buf_addr;
  371. #ifdef CONFIG_SYS_64BIT_LBA
  372. if (start > SCSI_LBA48_READ) {
  373. unsigned long blocks;
  374. blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
  375. pccb->datalen = scsi_dev_desc[device].blksz * blocks;
  376. scsi_setup_read16(pccb, start, blocks);
  377. start += blocks;
  378. blks -= blocks;
  379. } else
  380. #endif
  381. if (blks > SCSI_MAX_READ_BLK) {
  382. pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
  383. smallblks=SCSI_MAX_READ_BLK;
  384. scsi_setup_read_ext(pccb,start,smallblks);
  385. start+=SCSI_MAX_READ_BLK;
  386. blks-=SCSI_MAX_READ_BLK;
  387. }
  388. else {
  389. pccb->datalen=scsi_dev_desc[device].blksz * blks;
  390. smallblks=(unsigned short) blks;
  391. scsi_setup_read_ext(pccb,start,smallblks);
  392. start+=blks;
  393. blks=0;
  394. }
  395. debug("scsi_read_ext: startblk " LBAF
  396. ", blccnt %x buffer %" PRIXPTR "\n",
  397. start, smallblks, buf_addr);
  398. if (scsi_exec(pccb) != true) {
  399. scsi_print_error(pccb);
  400. blkcnt-=blks;
  401. break;
  402. }
  403. buf_addr+=pccb->datalen;
  404. } while(blks!=0);
  405. debug("scsi_read_ext: end startblk " LBAF
  406. ", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
  407. return(blkcnt);
  408. }
  409. /*******************************************************************************
  410. * scsi_write
  411. */
  412. /* Almost the maximum amount of the scsi_ext command.. */
  413. #define SCSI_MAX_WRITE_BLK 0xFFFF
  414. static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
  415. lbaint_t blkcnt, const void *buffer)
  416. {
  417. int device = block_dev->devnum;
  418. lbaint_t start, blks;
  419. uintptr_t buf_addr;
  420. unsigned short smallblks;
  421. ccb* pccb = (ccb *)&tempccb;
  422. device &= 0xff;
  423. /* Setup device
  424. */
  425. pccb->target = scsi_dev_desc[device].target;
  426. pccb->lun = scsi_dev_desc[device].lun;
  427. buf_addr = (unsigned long)buffer;
  428. start = blknr;
  429. blks = blkcnt;
  430. debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
  431. __func__, device, start, blks, (unsigned long)buffer);
  432. do {
  433. pccb->pdata = (unsigned char *)buf_addr;
  434. if (blks > SCSI_MAX_WRITE_BLK) {
  435. pccb->datalen = (scsi_dev_desc[device].blksz *
  436. SCSI_MAX_WRITE_BLK);
  437. smallblks = SCSI_MAX_WRITE_BLK;
  438. scsi_setup_write_ext(pccb, start, smallblks);
  439. start += SCSI_MAX_WRITE_BLK;
  440. blks -= SCSI_MAX_WRITE_BLK;
  441. } else {
  442. pccb->datalen = scsi_dev_desc[device].blksz * blks;
  443. smallblks = (unsigned short)blks;
  444. scsi_setup_write_ext(pccb, start, smallblks);
  445. start += blks;
  446. blks = 0;
  447. }
  448. debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
  449. __func__, start, smallblks, buf_addr);
  450. if (scsi_exec(pccb) != true) {
  451. scsi_print_error(pccb);
  452. blkcnt -= blks;
  453. break;
  454. }
  455. buf_addr += pccb->datalen;
  456. } while (blks != 0);
  457. debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
  458. __func__, start, smallblks, buf_addr);
  459. return blkcnt;
  460. }
  461. /* copy src to dest, skipping leading and trailing blanks
  462. * and null terminate the string
  463. */
  464. void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
  465. {
  466. int start,end;
  467. start=0;
  468. while(start<len) {
  469. if(src[start]!=' ')
  470. break;
  471. start++;
  472. }
  473. end=len-1;
  474. while(end>start) {
  475. if(src[end]!=' ')
  476. break;
  477. end--;
  478. }
  479. for( ; start<=end; start++) {
  480. *dest++=src[start];
  481. }
  482. *dest='\0';
  483. }
  484. /* Trim trailing blanks, and NUL-terminate string
  485. */
  486. void scsi_trim_trail (unsigned char *str, unsigned int len)
  487. {
  488. unsigned char *p = str + len - 1;
  489. while (len-- > 0) {
  490. *p-- = '\0';
  491. if (*p != ' ') {
  492. return;
  493. }
  494. }
  495. }
  496. int scsi_read_capacity(ccb *pccb, lbaint_t *capacity, unsigned long *blksz)
  497. {
  498. *capacity = 0;
  499. memset(pccb->cmd, 0, sizeof(pccb->cmd));
  500. pccb->cmd[0] = SCSI_RD_CAPAC10;
  501. pccb->cmd[1] = pccb->lun << 5;
  502. pccb->cmdlen = 10;
  503. pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
  504. pccb->datalen = 8;
  505. if (scsi_exec(pccb) != true)
  506. return 1;
  507. *capacity = ((lbaint_t)pccb->pdata[0] << 24) |
  508. ((lbaint_t)pccb->pdata[1] << 16) |
  509. ((lbaint_t)pccb->pdata[2] << 8) |
  510. ((lbaint_t)pccb->pdata[3]);
  511. if (*capacity != 0xffffffff) {
  512. /* Read capacity (10) was sufficient for this drive. */
  513. *blksz = ((unsigned long)pccb->pdata[4] << 24) |
  514. ((unsigned long)pccb->pdata[5] << 16) |
  515. ((unsigned long)pccb->pdata[6] << 8) |
  516. ((unsigned long)pccb->pdata[7]);
  517. return 0;
  518. }
  519. /* Read capacity (10) was insufficient. Use read capacity (16). */
  520. memset(pccb->cmd, 0, sizeof(pccb->cmd));
  521. pccb->cmd[0] = SCSI_RD_CAPAC16;
  522. pccb->cmd[1] = 0x10;
  523. pccb->cmdlen = 16;
  524. pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
  525. pccb->datalen = 16;
  526. if (scsi_exec(pccb) != true)
  527. return 1;
  528. *capacity = ((uint64_t)pccb->pdata[0] << 56) |
  529. ((uint64_t)pccb->pdata[1] << 48) |
  530. ((uint64_t)pccb->pdata[2] << 40) |
  531. ((uint64_t)pccb->pdata[3] << 32) |
  532. ((uint64_t)pccb->pdata[4] << 24) |
  533. ((uint64_t)pccb->pdata[5] << 16) |
  534. ((uint64_t)pccb->pdata[6] << 8) |
  535. ((uint64_t)pccb->pdata[7]);
  536. *blksz = ((uint64_t)pccb->pdata[8] << 56) |
  537. ((uint64_t)pccb->pdata[9] << 48) |
  538. ((uint64_t)pccb->pdata[10] << 40) |
  539. ((uint64_t)pccb->pdata[11] << 32) |
  540. ((uint64_t)pccb->pdata[12] << 24) |
  541. ((uint64_t)pccb->pdata[13] << 16) |
  542. ((uint64_t)pccb->pdata[14] << 8) |
  543. ((uint64_t)pccb->pdata[15]);
  544. return 0;
  545. }
  546. /************************************************************************************
  547. * Some setup (fill-in) routines
  548. */
  549. void scsi_setup_test_unit_ready(ccb * pccb)
  550. {
  551. pccb->cmd[0]=SCSI_TST_U_RDY;
  552. pccb->cmd[1]=pccb->lun<<5;
  553. pccb->cmd[2]=0;
  554. pccb->cmd[3]=0;
  555. pccb->cmd[4]=0;
  556. pccb->cmd[5]=0;
  557. pccb->cmdlen=6;
  558. pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
  559. }
  560. #ifdef CONFIG_SYS_64BIT_LBA
  561. void scsi_setup_read16(ccb * pccb, lbaint_t start, unsigned long blocks)
  562. {
  563. pccb->cmd[0] = SCSI_READ16;
  564. pccb->cmd[1] = pccb->lun<<5;
  565. pccb->cmd[2] = ((unsigned char) (start >> 56)) & 0xff;
  566. pccb->cmd[3] = ((unsigned char) (start >> 48)) & 0xff;
  567. pccb->cmd[4] = ((unsigned char) (start >> 40)) & 0xff;
  568. pccb->cmd[5] = ((unsigned char) (start >> 32)) & 0xff;
  569. pccb->cmd[6] = ((unsigned char) (start >> 24)) & 0xff;
  570. pccb->cmd[7] = ((unsigned char) (start >> 16)) & 0xff;
  571. pccb->cmd[8] = ((unsigned char) (start >> 8)) & 0xff;
  572. pccb->cmd[9] = ((unsigned char) (start)) & 0xff;
  573. pccb->cmd[10] = 0;
  574. pccb->cmd[11] = ((unsigned char) (blocks >> 24)) & 0xff;
  575. pccb->cmd[12] = ((unsigned char) (blocks >> 16)) & 0xff;
  576. pccb->cmd[13] = ((unsigned char) (blocks >> 8)) & 0xff;
  577. pccb->cmd[14] = (unsigned char) blocks & 0xff;
  578. pccb->cmd[15] = 0;
  579. pccb->cmdlen = 16;
  580. pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
  581. debug ("scsi_setup_read16: cmd: %02X %02X "
  582. "startblk %02X%02X%02X%02X%02X%02X%02X%02X "
  583. "blccnt %02X%02X%02X%02X\n",
  584. pccb->cmd[0], pccb->cmd[1],
  585. pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
  586. pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
  587. pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
  588. }
  589. #endif
  590. void scsi_setup_read_ext(ccb * pccb, lbaint_t start, unsigned short blocks)
  591. {
  592. pccb->cmd[0]=SCSI_READ10;
  593. pccb->cmd[1]=pccb->lun<<5;
  594. pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
  595. pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
  596. pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
  597. pccb->cmd[5]=((unsigned char) (start))&0xff;
  598. pccb->cmd[6]=0;
  599. pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
  600. pccb->cmd[8]=(unsigned char) blocks & 0xff;
  601. pccb->cmd[6]=0;
  602. pccb->cmdlen=10;
  603. pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
  604. debug ("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
  605. pccb->cmd[0],pccb->cmd[1],
  606. pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
  607. pccb->cmd[7],pccb->cmd[8]);
  608. }
  609. void scsi_setup_write_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
  610. {
  611. pccb->cmd[0] = SCSI_WRITE10;
  612. pccb->cmd[1] = pccb->lun << 5;
  613. pccb->cmd[2] = ((unsigned char) (start>>24)) & 0xff;
  614. pccb->cmd[3] = ((unsigned char) (start>>16)) & 0xff;
  615. pccb->cmd[4] = ((unsigned char) (start>>8)) & 0xff;
  616. pccb->cmd[5] = ((unsigned char) (start)) & 0xff;
  617. pccb->cmd[6] = 0;
  618. pccb->cmd[7] = ((unsigned char) (blocks>>8)) & 0xff;
  619. pccb->cmd[8] = (unsigned char)blocks & 0xff;
  620. pccb->cmd[9] = 0;
  621. pccb->cmdlen = 10;
  622. pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
  623. debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
  624. __func__,
  625. pccb->cmd[0], pccb->cmd[1],
  626. pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
  627. pccb->cmd[7], pccb->cmd[8]);
  628. }
  629. void scsi_setup_read6(ccb * pccb, lbaint_t start, unsigned short blocks)
  630. {
  631. pccb->cmd[0]=SCSI_READ6;
  632. pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
  633. pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
  634. pccb->cmd[3]=((unsigned char) (start))&0xff;
  635. pccb->cmd[4]=(unsigned char) blocks & 0xff;
  636. pccb->cmd[5]=0;
  637. pccb->cmdlen=6;
  638. pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
  639. debug ("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
  640. pccb->cmd[0],pccb->cmd[1],
  641. pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
  642. }
  643. void scsi_setup_inquiry(ccb * pccb)
  644. {
  645. pccb->cmd[0]=SCSI_INQUIRY;
  646. pccb->cmd[1]=pccb->lun<<5;
  647. pccb->cmd[2]=0;
  648. pccb->cmd[3]=0;
  649. if(pccb->datalen>255)
  650. pccb->cmd[4]=255;
  651. else
  652. pccb->cmd[4]=(unsigned char)pccb->datalen;
  653. pccb->cmd[5]=0;
  654. pccb->cmdlen=6;
  655. pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
  656. }
  657. U_BOOT_CMD(
  658. scsi, 5, 1, do_scsi,
  659. "SCSI sub-system",
  660. "reset - reset SCSI controller\n"
  661. "scsi info - show available SCSI devices\n"
  662. "scsi scan - (re-)scan SCSI bus\n"
  663. "scsi device [dev] - show or set current device\n"
  664. "scsi part [dev] - print partition table of one or all SCSI devices\n"
  665. "scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
  666. " to memory address `addr'\n"
  667. "scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
  668. " `blk#' from memory address `addr'"
  669. );
  670. U_BOOT_CMD(
  671. scsiboot, 3, 1, do_scsiboot,
  672. "boot from SCSI device",
  673. "loadAddr dev:part"
  674. );