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authorwdenk <wdenk>2002-08-27 09:44:07 +0000
committerwdenk <wdenk>2002-08-27 09:44:07 +0000
commite887afc9da0fec9b7bbdf6b13b920ed30006edfc (patch)
tree5f4442f6c8629e787418e8dc8c0a30312a89584b /common/cmd_scsi.c
parent3863585bb1c1e8f89b4a2e90c4b83f8b81b8e029 (diff)
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Initial revision
Diffstat (limited to 'common/cmd_scsi.c')
-rw-r--r--common/cmd_scsi.c597
1 files changed, 597 insertions, 0 deletions
diff --git a/common/cmd_scsi.c b/common/cmd_scsi.c
new file mode 100644
index 0000000..9b5c69b
--- /dev/null
+++ b/common/cmd_scsi.c
@@ -0,0 +1,597 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ *
+ */
+
+/*
+ * SCSI support.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <cmd_boot.h>
+#include <asm/processor.h>
+#include <scsi.h>
+#include <image.h>
+#include <cmd_disk.h>
+#include <pci.h>
+
+
+#undef SCSI_DEBUG
+
+#ifdef SCSI_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_SCSI)
+
+#ifdef CONFIG_SCSI_SYM53C8XX
+#define SCSI_VEND_ID 0x1000
+#ifndef CONFIG_SCSI_DEV_ID
+#define SCSI_DEV_ID 0x0001
+#else
+#define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
+#endif
+#else
+#error CONFIG_SCSI_SYM53C8XX must be defined
+#endif
+
+
+static ccb tempccb; /* temporary scsi command buffer */
+
+static unsigned char tempbuff[512]; /* temporary data buffer */
+
+static int scsi_max_devs; /* number of highest available scsi device */
+
+static int scsi_curr_dev; /* current device */
+
+static block_dev_desc_t scsi_dev_desc[CFG_SCSI_MAX_DEVICE];
+
+/********************************************************************************
+ * forward declerations of some Setup Routines
+ */
+void scsi_setup_test_unit_ready(ccb * pccb);
+void scsi_setup_read_capacity(ccb * pccb);
+void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks);
+void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks);
+void scsi_setup_inquiry(ccb * pccb);
+void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
+
+
+ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer);
+
+
+/*********************************************************************************
+ * (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;
+ unsigned long capacity,blksz;
+ ccb* pccb=(ccb *)&tempccb;
+
+ if(mode==1) {
+ printf("scanning bus for devices...\n");
+ }
+ for(i=0;i<CFG_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].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_max_devs=0;
+ for(i=0;i<CFG_SCSI_MAX_SCSI_ID;i++) {
+ pccb->target=i;
+ for(lun=0;lun<CFG_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) {
+ PRINTF("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(&scsi_dev_desc[scsi_max_devs].vendor[0],&tempbuff[8],8);
+ scsi_ident_cpy(&scsi_dev_desc[scsi_max_devs].product[0],&tempbuff[16],16);
+ scsi_ident_cpy(&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;
+ }
+ pccb->datalen=8;
+ scsi_setup_read_capacity(pccb);
+ if(scsi_exec(pccb)!=TRUE) {
+ scsi_print_error(pccb);
+ continue;
+ }
+ capacity=((unsigned long)tempbuff[0]<<24)|((unsigned long)tempbuff[1]<<16)|
+ ((unsigned long)tempbuff[2]<<8)|((unsigned long)tempbuff[3]);
+ blksz=((unsigned long)tempbuff[4]<<24)|((unsigned long)tempbuff[5]<<16)|
+ ((unsigned long)tempbuff[6]<<8)|((unsigned long)tempbuff[7]);
+ scsi_dev_desc[scsi_max_devs].lba=capacity;
+ scsi_dev_desc[scsi_max_devs].blksz=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;
+}
+
+
+
+void scsi_init(void)
+{
+ int busdevfunc;
+
+ busdevfunc=pci_find_device(SCSI_VEND_ID,SCSI_DEV_ID,0); /* get PCI Device ID */
+ if(busdevfunc==-1) {
+ printf("Error SCSI Controller (%04X,%04X) not found\n",SCSI_VEND_ID,SCSI_DEV_ID);
+ return;
+ }
+#ifdef DEBUG
+ else {
+ 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);
+ }
+#endif
+ scsi_low_level_init(busdevfunc);
+ scsi_scan(1);
+}
+
+block_dev_desc_t * scsi_get_dev(int dev)
+{
+ return((block_dev_desc_t *)&scsi_dev_desc[dev]);
+}
+
+
+
+/******************************************************************************
+ * scsi boot command intepreter. Derived from diskboot
+ */
+int do_scsiboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ char *boot_device = NULL;
+ char *ep;
+ int dev, part = 0;
+ ulong cnt;
+ ulong addr;
+ disk_partition_t info;
+ image_header_t *hdr;
+ int rcode = 0;
+
+ switch (argc) {
+ case 1:
+ addr = CFG_LOAD_ADDR;
+ boot_device = getenv ("bootdevice");
+ break;
+ case 2:
+ addr = simple_strtoul(argv[1], NULL, 16);
+ boot_device = getenv ("bootdevice");
+ break;
+ case 3:
+ addr = simple_strtoul(argv[1], NULL, 16);
+ boot_device = argv[2];
+ break;
+ default:
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ if (!boot_device) {
+ puts ("\n** No boot device **\n");
+ return 1;
+ }
+
+ dev = simple_strtoul(boot_device, &ep, 16);
+ printf("booting from dev %d\n",dev);
+ if (scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
+ printf ("\n** Device %d not available\n", dev);
+ return 1;
+ }
+
+ if (*ep) {
+ if (*ep != ':') {
+ puts ("\n** Invalid boot device, use `dev[:part]' **\n");
+ return 1;
+ }
+ part = simple_strtoul(++ep, NULL, 16);
+ }
+ if (get_partition_info (&scsi_dev_desc[dev], part, &info)) {
+ printf("error reading partinfo\n");
+ return 1;
+ }
+ if (strncmp(info.type, BOOT_PART_TYPE, sizeof(info.type)) != 0) {
+ printf ("\n** Invalid partition type \"%.32s\""
+ " (expect \"" BOOT_PART_TYPE "\")\n",
+ info.type);
+ return 1;
+ }
+
+ printf ("\nLoading from SCSI device %d, partition %d: "
+ "Name: %.32s Type: %.32s\n",
+ dev, part, info.name, info.type);
+
+ PRINTF ("First Block: %ld, # of blocks: %ld, Block Size: %ld\n",
+ info.start, info.size, info.blksz);
+
+ if (scsi_read (dev, info.start, 1, (ulong *)addr) != 1) {
+ printf ("** Read error on %d:%d\n", dev, part);
+ return 1;
+ }
+
+ hdr = (image_header_t *)addr;
+
+ if (hdr->ih_magic == IH_MAGIC) {
+
+ print_image_hdr (hdr);
+ cnt = (hdr->ih_size + sizeof(image_header_t));
+ cnt += info.blksz - 1;
+ cnt /= info.blksz;
+ cnt -= 1;
+ } else {
+ printf("\n** Bad Magic Number **\n");
+ return 1;
+ }
+
+ if (scsi_read (dev, info.start+1, cnt,
+ (ulong *)(addr+info.blksz)) != cnt) {
+ printf ("** Read error on %d:%d\n", dev, part);
+ return 1;
+ }
+ /* Loading ok, update default load address */
+ load_addr = addr;
+
+ flush_cache (addr, (cnt+1)*info.blksz);
+
+ /* Check if we should attempt an auto-start */
+ if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
+ char *local_args[2];
+ extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
+ local_args[0] = argv[0];
+ local_args[1] = NULL;
+ printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
+ rcode = do_bootm (cmdtp, 0, 1, local_args);
+ }
+ return rcode;
+}
+
+/*********************************************************************************
+ * scsi command intepreter
+ */
+int do_scsi (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ switch (argc) {
+ case 0:
+ case 1: printf ("Usage:\n%s\n", cmdtp->usage); return 1;
+ case 2:
+ if (strncmp(argv[1],"res",3) == 0) {
+ printf("\nReset SCSI\n");
+ scsi_bus_reset();
+ scsi_scan(1);
+ return 0;
+ }
+ if (strncmp(argv[1],"inf",3) == 0) {
+ int i;
+ for (i=0; i<CFG_SCSI_MAX_DEVICE; ++i) {
+ if(scsi_dev_desc[i].type==DEV_TYPE_UNKNOWN)
+ continue; /* list only known devices */
+ printf ("SCSI dev. %d: ", i);
+ dev_print(&scsi_dev_desc[i]);
+ }
+ return 0;
+ }
+ if (strncmp(argv[1],"dev",3) == 0) {
+ if ((scsi_curr_dev < 0) || (scsi_curr_dev >= CFG_SCSI_MAX_DEVICE)) {
+ printf("\nno SCSI devices available\n");
+ return 1;
+ }
+ printf ("\n Device %d: ", scsi_curr_dev);
+ dev_print(&scsi_dev_desc[scsi_curr_dev]);
+ return 0;
+ }
+ if (strncmp(argv[1],"scan",4) == 0) {
+ scsi_scan(1);
+ return 0;
+ }
+ if (strncmp(argv[1],"part",4) == 0) {
+ int dev, ok;
+ for (ok=0, dev=0; dev<CFG_SCSI_MAX_DEVICE; ++dev) {
+ if (scsi_dev_desc[dev].type!=DEV_TYPE_UNKNOWN) {
+ ok++;
+ if (dev)
+ printf("\n");
+ PRINTF("print_part of %x\n",dev);
+ print_part(&scsi_dev_desc[dev]);
+ }
+ }
+ if (!ok)
+ printf("\nno SCSI devices available\n");
+ return 1;
+ }
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ case 3:
+ if (strncmp(argv[1],"dev",3) == 0) {
+ int dev = (int)simple_strtoul(argv[2], NULL, 10);
+ printf ("\nSCSI device %d: ", dev);
+ if (dev >= CFG_SCSI_MAX_DEVICE) {
+ printf("unknown device\n");
+ return 1;
+ }
+ printf ("\n Device %d: ", dev);
+ dev_print(&scsi_dev_desc[dev]);
+ if(scsi_dev_desc[dev].type == DEV_TYPE_UNKNOWN) {
+ return 1;
+ }
+ scsi_curr_dev = dev;
+ printf("... is now current device\n");
+ return 0;
+ }
+ if (strncmp(argv[1],"part",4) == 0) {
+ int dev = (int)simple_strtoul(argv[2], NULL, 10);
+ if(scsi_dev_desc[dev].type != DEV_TYPE_UNKNOWN) {
+ print_part(&scsi_dev_desc[dev]);
+ }
+ else {
+ printf ("\nSCSI device %d not available\n", dev);
+ }
+ return 1;
+ }
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ default:
+ /* at least 4 args */
+ if (strcmp(argv[1],"read") == 0) {
+ ulong addr = simple_strtoul(argv[2], NULL, 16);
+ ulong blk = simple_strtoul(argv[3], NULL, 16);
+ ulong cnt = simple_strtoul(argv[4], NULL, 16);
+ ulong n;
+ printf ("\nSCSI read: device %d block # %ld, count %ld ... ",
+ scsi_curr_dev, blk, cnt);
+ n = scsi_read(scsi_curr_dev, blk, cnt, (ulong *)addr);
+ printf ("%ld blocks read: %s\n",n,(n==cnt) ? "OK" : "ERROR");
+ return 0;
+ }
+ } /* switch */
+ printf ("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+}
+
+/****************************************************************************************
+ * scsi_read
+ */
+
+#define SCSI_MAX_READ_BLK 0xFFFF /* almost the maximum amount of the scsi_ext command.. */
+
+ulong scsi_read(int device, ulong blknr, ulong blkcnt, ulong *buffer)
+{
+ ulong start,blks, buf_addr;
+ unsigned short smallblks;
+ ccb* pccb=(ccb *)&tempccb;
+ device&=0xff;
+ /* Setup device
+ */
+ pccb->target=scsi_dev_desc[device].target;
+ pccb->lun=scsi_dev_desc[device].lun;
+ buf_addr=(unsigned long)buffer;
+ start=blknr;
+ blks=blkcnt;
+ PRINTF("\nscsi_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks,(unsigned long)buffer);
+ do {
+ pccb->pdata=(unsigned char *)buf_addr;
+ if(blks>SCSI_MAX_READ_BLK) {
+ pccb->datalen=scsi_dev_desc[device].blksz * SCSI_MAX_READ_BLK;
+ smallblks=SCSI_MAX_READ_BLK;
+ scsi_setup_read_ext(pccb,start,smallblks);
+ start+=SCSI_MAX_READ_BLK;
+ blks-=SCSI_MAX_READ_BLK;
+ }
+ else {
+ pccb->datalen=scsi_dev_desc[device].blksz * blks;
+ smallblks=(unsigned short) blks;
+ scsi_setup_read_ext(pccb,start,smallblks);
+ start+=blks;
+ blks=0;
+ }
+ PRINTF("scsi_read_ext: startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
+ if(scsi_exec(pccb)!=TRUE) {
+ scsi_print_error(pccb);
+ blkcnt-=blks;
+ break;
+ }
+ buf_addr+=pccb->datalen;
+ } while(blks!=0);
+ PRINTF("scsi_read_ext: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
+ return(blkcnt);
+}
+
+/* copy src to dest, skipping leading and trailing blanks
+ * and null terminate the string
+ */
+void scsi_ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len)
+{
+ int start,end;
+
+ start=0;
+ while(start<len) {
+ if(src[start]!=' ')
+ break;
+ start++;
+ }
+ end=len-1;
+ while(end>start) {
+ if(src[end]!=' ')
+ break;
+ end--;
+ }
+ for( ; start<=end; start++) {
+ *dest++=src[start];
+ }
+ *dest='\0';
+}
+
+
+
+/* Trim trailing blanks, and NUL-terminate string
+ */
+void scsi_trim_trail (unsigned char *str, unsigned int len)
+{
+ unsigned char *p = str + len - 1;
+
+ while (len-- > 0) {
+ *p-- = '\0';
+ if (*p != ' ') {
+ return;
+ }
+ }
+}
+
+
+/************************************************************************************
+ * Some setup (fill-in) routines
+ */
+void scsi_setup_test_unit_ready(ccb * pccb)
+{
+ pccb->cmd[0]=SCSI_TST_U_RDY;
+ pccb->cmd[1]=pccb->lun<<5;
+ pccb->cmd[2]=0;
+ pccb->cmd[3]=0;
+ pccb->cmd[4]=0;
+ pccb->cmd[5]=0;
+ pccb->cmdlen=6;
+ pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+}
+
+void scsi_setup_read_capacity(ccb * pccb)
+{
+ pccb->cmd[0]=SCSI_RD_CAPAC;
+ pccb->cmd[1]=pccb->lun<<5;
+ pccb->cmd[2]=0;
+ pccb->cmd[3]=0;
+ pccb->cmd[4]=0;
+ pccb->cmd[5]=0;
+ pccb->cmd[6]=0;
+ pccb->cmd[7]=0;
+ pccb->cmd[8]=0;
+ pccb->cmd[9]=0;
+ pccb->cmdlen=10;
+ pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+
+}
+
+void scsi_setup_read_ext(ccb * pccb, unsigned long start, unsigned short blocks)
+{
+ pccb->cmd[0]=SCSI_READ10;
+ pccb->cmd[1]=pccb->lun<<5;
+ pccb->cmd[2]=((unsigned char) (start>>24))&0xff;
+ pccb->cmd[3]=((unsigned char) (start>>16))&0xff;
+ pccb->cmd[4]=((unsigned char) (start>>8))&0xff;
+ pccb->cmd[5]=((unsigned char) (start))&0xff;
+ pccb->cmd[6]=0;
+ pccb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
+ pccb->cmd[8]=(unsigned char) blocks & 0xff;
+ pccb->cmd[6]=0;
+ pccb->cmdlen=10;
+ pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+ PRINTF("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
+ pccb->cmd[0],pccb->cmd[1],
+ pccb->cmd[2],pccb->cmd[3],pccb->cmd[4],pccb->cmd[5],
+ pccb->cmd[7],pccb->cmd[8]);
+}
+
+void scsi_setup_read6(ccb * pccb, unsigned long start, unsigned short blocks)
+{
+ pccb->cmd[0]=SCSI_READ6;
+ pccb->cmd[1]=pccb->lun<<5 | (((unsigned char)(start>>16))&0x1f);
+ pccb->cmd[2]=((unsigned char) (start>>8))&0xff;
+ pccb->cmd[3]=((unsigned char) (start))&0xff;
+ pccb->cmd[4]=(unsigned char) blocks & 0xff;
+ pccb->cmd[5]=0;
+ pccb->cmdlen=6;
+ pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+ PRINTF("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
+ pccb->cmd[0],pccb->cmd[1],
+ pccb->cmd[2],pccb->cmd[3],pccb->cmd[4]);
+}
+
+
+void scsi_setup_inquiry(ccb * pccb)
+{
+ pccb->cmd[0]=SCSI_INQUIRY;
+ pccb->cmd[1]=pccb->lun<<5;
+ pccb->cmd[2]=0;
+ pccb->cmd[3]=0;
+ if(pccb->datalen>255)
+ pccb->cmd[4]=255;
+ else
+ pccb->cmd[4]=(unsigned char)pccb->datalen;
+ pccb->cmd[5]=0;
+ pccb->cmdlen=6;
+ pccb->msgout[0]=SCSI_IDENTIFY; /* NOT USED */
+}
+
+#endif /* #if (CONFIG_COMMANDS & CFG_CMD_SCSI) */
+
+