cmd_ide.c

/*
 * (C) Copyright 2000-2011
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 * IDE support
 */

#include <common.h>
#include <config.h>
#include <watchdog.h>
#include <command.h>
#include <image.h>
#include <asm/byteorder.h>
#include <asm/io.h>

#if defined(CONFIG_IDE_8xx_DIRECT) || defined(CONFIG_IDE_PCMCIA)
# include <pcmcia.h>
#endif

#include <ide.h>
#include <ata.h>

#ifdef CONFIG_STATUS_LED
# include <status_led.h>
#endif

#ifdef __PPC__
# define EIEIO		__asm__ volatile ("eieio")
# define SYNC		__asm__ volatile ("sync")
#else
# define EIEIO		/* nothing */
# define SYNC		/* nothing */
#endif

/* ------------------------------------------------------------------------- */

/* Current I/O Device	*/
static int curr_device = -1;

/* Current offset for IDE0 / IDE1 bus access	*/
ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS] = {
#if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
	CONFIG_SYS_ATA_IDE0_OFFSET,
#endif
#if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
	CONFIG_SYS_ATA_IDE1_OFFSET,
#endif
};

static int ide_bus_ok[CONFIG_SYS_IDE_MAXBUS];

block_dev_desc_t ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
/* ------------------------------------------------------------------------- */

#ifdef CONFIG_IDE_RESET
static void  ide_reset (void);
#else
#define ide_reset()	/* dummy */
#endif

static void  ide_ident (block_dev_desc_t *dev_desc);
static uchar ide_wait  (int dev, ulong t);

#define IDE_TIME_OUT	2000	/* 2 sec timeout */

#define ATAPI_TIME_OUT	7000	/* 7 sec timeout (5 sec seems to work...) */

#define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */

static void ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);

#ifndef CONFIG_SYS_ATA_PORT_ADDR
#define CONFIG_SYS_ATA_PORT_ADDR(port) (port)
#endif

#ifdef CONFIG_ATAPI
static void	atapi_inquiry(block_dev_desc_t *dev_desc);
static ulong atapi_read(int device, ulong blknr, lbaint_t blkcnt,
			void *buffer);
#endif


/* ------------------------------------------------------------------------- */

int do_ide(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	int rcode = 0;

	switch (argc) {
	case 0:
	case 1:
		return CMD_RET_USAGE;
	case 2:
		if (strncmp(argv[1], "res", 3) == 0) {
			puts("\nReset IDE"
#ifdef CONFIG_IDE_8xx_DIRECT
			     " on PCMCIA " PCMCIA_SLOT_MSG
#endif
			     ": ");

			ide_init();
			return 0;
		} else if (strncmp(argv[1], "inf", 3) == 0) {
			int i;

			putc('\n');

			for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
				if (ide_dev_desc[i].type == DEV_TYPE_UNKNOWN)
					continue;  /* list only known devices */
				printf("IDE device %d: ", i);
				dev_print(&ide_dev_desc[i]);
			}
			return 0;

		} else if (strncmp(argv[1], "dev", 3) == 0) {
			if ((curr_device < 0)
			    || (curr_device >= CONFIG_SYS_IDE_MAXDEVICE)) {
				puts("\nno IDE devices available\n");
				return 1;
			}
			printf("\nIDE device %d: ", curr_device);
			dev_print(&ide_dev_desc[curr_device]);
			return 0;
		} else if (strncmp(argv[1], "part", 4) == 0) {
			int dev, ok;

			for (ok = 0, dev = 0;
			     dev < CONFIG_SYS_IDE_MAXDEVICE;
			     ++dev) {
				if (ide_dev_desc[dev].part_type !=
				    PART_TYPE_UNKNOWN) {
					++ok;
					if (dev)
						putc('\n');
					print_part(&ide_dev_desc[dev]);
				}
			}
			if (!ok) {
				puts("\nno IDE devices available\n");
				rcode++;
			}
			return rcode;
		}
		return CMD_RET_USAGE;
	case 3:
		if (strncmp(argv[1], "dev", 3) == 0) {
			int dev = (int) simple_strtoul(argv[2], NULL, 10);

			printf("\nIDE device %d: ", dev);
			if (dev >= CONFIG_SYS_IDE_MAXDEVICE) {
				puts("unknown device\n");
				return 1;
			}
			dev_print(&ide_dev_desc[dev]);
			/*ide_print (dev); */

			if (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN)
				return 1;

			curr_device = dev;

			puts("... is now current device\n");

			return 0;
		} else if (strncmp(argv[1], "part", 4) == 0) {
			int dev = (int) simple_strtoul(argv[2], NULL, 10);

			if (ide_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
				print_part(&ide_dev_desc[dev]);
			} else {
				printf("\nIDE device %d not available\n",
				       dev);
				rcode = 1;
			}
			return rcode;
		}

		return CMD_RET_USAGE;
	default:
		/* at least 4 args */

		if (strcmp(argv[1], "read") == 0) {
			ulong addr = simple_strtoul(argv[2], NULL, 16);
			ulong cnt = simple_strtoul(argv[4], NULL, 16);
			ulong n;

#ifdef CONFIG_SYS_64BIT_LBA
			lbaint_t blk = simple_strtoull(argv[3], NULL, 16);

			printf("\nIDE read: device %d block # %lld, count %ld ... ",
				curr_device, blk, cnt);
#else
			lbaint_t blk = simple_strtoul(argv[3], NULL, 16);

			printf("\nIDE read: device %d block # %ld, count %ld ... ",