11f610edf0
At present the SCSI command code includes both the command-processing code and the core SCSI functions and data structures. Separate the latter into its own file, adding functions as needed to avoid the command code accessing data structures directly. This functions use the new legacy block functions. With this commit: - There is no CONFIG option referenced from the command code - The concept of a 'current SCSI device' is confined to the command code This will make it easier to convert this code to driver model. Signed-off-by: Simon Glass <sjg@chromium.org>
138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*
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* (C) Copyright 2001
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* Denis Peter, MPL AG Switzerland
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* SCSI support.
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*/
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#include <common.h>
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#include <command.h>
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#include <scsi.h>
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static int scsi_curr_dev; /* current device */
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/*
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* scsi boot command intepreter. Derived from diskboot
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*/
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int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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{
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return common_diskboot(cmdtp, "scsi", argc, argv);
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}
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/*
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* scsi command intepreter
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*/
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int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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{
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switch (argc) {
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case 0:
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case 1:
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return CMD_RET_USAGE;
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case 2:
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if (strncmp(argv[1], "res", 3) == 0) {
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printf("\nReset SCSI\n");
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scsi_bus_reset();
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scsi_scan(1);
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return 0;
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}
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if (strncmp(argv[1], "inf", 3) == 0) {
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blk_list_devices(IF_TYPE_SCSI);
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return 0;
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}
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if (strncmp(argv[1], "dev", 3) == 0) {
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if (blk_print_device_num(IF_TYPE_SCSI, scsi_curr_dev)) {
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printf("\nno SCSI devices available\n");
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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if (strncmp(argv[1], "scan", 4) == 0) {
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scsi_scan(1);
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return 0;
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}
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if (strncmp(argv[1], "part", 4) == 0) {
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if (blk_list_part(IF_TYPE_SCSI))
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printf("\nno SCSI devices available\n");
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return 0;
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}
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return CMD_RET_USAGE;
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case 3:
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if (strncmp(argv[1], "dev", 3) == 0) {
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int dev = (int)simple_strtoul(argv[2], NULL, 10);
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if (!blk_show_device(IF_TYPE_SCSI, dev)) {
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scsi_curr_dev = dev;
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printf("... is now current device\n");
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} else {
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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if (strncmp(argv[1], "part", 4) == 0) {
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int dev = (int)simple_strtoul(argv[2], NULL, 10);
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if (blk_print_part_devnum(IF_TYPE_SCSI, dev)) {
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printf("\nSCSI device %d not available\n",
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dev);
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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return CMD_RET_USAGE;
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default:
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/* at least 4 args */
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if (strcmp(argv[1], "read") == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong blk = simple_strtoul(argv[3], NULL, 16);
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ulong cnt = simple_strtoul(argv[4], NULL, 16);
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ulong n;
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printf("\nSCSI read: device %d block # %ld, count %ld ... ",
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scsi_curr_dev, blk, cnt);
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n = blk_read_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
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cnt, (ulong *)addr);
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printf("%ld blocks read: %s\n", n,
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n == cnt ? "OK" : "ERROR");
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return 0;
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} else if (strcmp(argv[1], "write") == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong blk = simple_strtoul(argv[3], NULL, 16);
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ulong cnt = simple_strtoul(argv[4], NULL, 16);
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ulong n;
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printf("\nSCSI write: device %d block # %ld, count %ld ... ",
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scsi_curr_dev, blk, cnt);
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n = blk_write_devnum(IF_TYPE_SCSI, scsi_curr_dev, blk,
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cnt, (ulong *)addr);
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printf("%ld blocks written: %s\n", n,
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n == cnt ? "OK" : "ERROR");
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return 0;
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}
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} /* switch */
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return CMD_RET_USAGE;
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}
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U_BOOT_CMD(
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scsi, 5, 1, do_scsi,
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"SCSI sub-system",
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"reset - reset SCSI controller\n"
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"scsi info - show available SCSI devices\n"
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"scsi scan - (re-)scan SCSI bus\n"
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"scsi device [dev] - show or set current device\n"
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"scsi part [dev] - print partition table of one or all SCSI devices\n"
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"scsi read addr blk# cnt - read `cnt' blocks starting at block `blk#'\n"
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" to memory address `addr'\n"
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"scsi write addr blk# cnt - write `cnt' blocks starting at block\n"
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" `blk#' from memory address `addr'"
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);
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U_BOOT_CMD(
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scsiboot, 3, 1, do_scsiboot,
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"boot from SCSI device",
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"loadAddr dev:part"
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);
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