/** * scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties * * @dev_desc: Block device description pointer */ static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc) { dev_desc->target = 0xff; dev_desc->lun = 0xff; dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz)); dev_desc->type = DEV_TYPE_UNKNOWN; dev_desc->vendor[0] = 0; dev_desc->product[0] = 0; dev_desc->revision[0] = 0; dev_desc->removable = false; #if !CONFIG_IS_ENABLED(BLK) dev_desc->block_read = scsi_read; dev_desc->block_write = scsi_write; #endif }
/********************************************************************************* * (re)-scan the scsi bus and reports scsi device info * to the user if mode = 1 */ void scsi_scan(int mode) { unsigned char i,perq,modi,lun; lbaint_t capacity; unsigned long blksz; ccb* pccb=(ccb *)&tempccb; if(mode==1) { printf("scanning bus for devices...\n"); } for(i=0; i<CONFIG_SYS_SCSI_MAX_DEVICE; i++) { scsi_dev_desc[i].target=0xff; scsi_dev_desc[i].lun=0xff; scsi_dev_desc[i].lba=0; scsi_dev_desc[i].blksz=0; scsi_dev_desc[i].log2blksz = LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz)); scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN; scsi_dev_desc[i].vendor[0]=0; scsi_dev_desc[i].product[0]=0; scsi_dev_desc[i].revision[0]=0; scsi_dev_desc[i].removable = false; scsi_dev_desc[i].if_type=IF_TYPE_SCSI; scsi_dev_desc[i].dev=i; scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN; scsi_dev_desc[i].block_read=scsi_read; scsi_dev_desc[i].block_write = scsi_write; } scsi_max_devs=0; for(i=0; i<CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) { pccb->target=i; for(lun=0; lun<CONFIG_SYS_SCSI_MAX_LUN; lun++) { pccb->lun=lun; pccb->pdata=(unsigned char *)&tempbuff; pccb->datalen=512; scsi_setup_inquiry(pccb); if (scsi_exec(pccb) != true) { if(pccb->contr_stat==SCSI_SEL_TIME_OUT) { debug ("Selection timeout ID %d\n",pccb->target); continue; /* selection timeout => assuming no device present */ } scsi_print_error(pccb); continue; } perq=tempbuff[0]; modi=tempbuff[1]; if((perq & 0x1f)==0x1f) { continue; /* skip unknown devices */ } if((modi&0x80)==0x80) /* drive is removable */ scsi_dev_desc[scsi_max_devs].removable=true; /* get info for this device */ scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0], &tempbuff[8], 8); scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0], &tempbuff[16], 16); scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0], &tempbuff[32], 4); scsi_dev_desc[scsi_max_devs].target=pccb->target; scsi_dev_desc[scsi_max_devs].lun=pccb->lun; pccb->datalen=0; scsi_setup_test_unit_ready(pccb); if (scsi_exec(pccb) != true) { if (scsi_dev_desc[scsi_max_devs].removable == true) { scsi_dev_desc[scsi_max_devs].type=perq; goto removable; } scsi_print_error(pccb); continue; } if (scsi_read_capacity(pccb, &capacity, &blksz)) { scsi_print_error(pccb); continue; } scsi_dev_desc[scsi_max_devs].lba=capacity; scsi_dev_desc[scsi_max_devs].blksz=blksz; scsi_dev_desc[scsi_max_devs].log2blksz = LOG2(scsi_dev_desc[scsi_max_devs].blksz); scsi_dev_desc[scsi_max_devs].type=perq; init_part(&scsi_dev_desc[scsi_max_devs]); removable: if(mode==1) { printf (" Device %d: ", scsi_max_devs); dev_print(&scsi_dev_desc[scsi_max_devs]); } /* if mode */ scsi_max_devs++; } /* next LUN */ } if(scsi_max_devs>0) scsi_curr_dev=0; else scsi_curr_dev = -1; printf("Found %d device(s).\n", scsi_max_devs); setenv_ulong("scsidevs", scsi_max_devs); }