Initial revision

1 files changed, 1563 insertions, 0 deletions

diff --git a/common/cmd_ide.c b/common/cmd_ide.c
new file mode 100644
index 0000000..9cbfe1b
--- /dev/null
+++ b/common/cmd_ide.c
@@ -0,0 +1,1563 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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
+ *
+ */
+
+/*
+ * IDE support
+ */
+#include <common.h>
+#include <config.h>
+#include <watchdog.h>
+#include <command.h>
+#include <image.h>
+#include <asm/byteorder.h>
+#if defined(CONFIG_IDE_8xx_DIRECT) || defined(CONFIG_IDE_PCMCIA)
+# include <pcmcia.h>
+#endif
+#ifdef CONFIG_8xx
+# include <mpc8xx.h>
+#endif
+#include <ide.h>
+#include <ata.h>
+#include <cmd_ide.h>
+#include <cmd_disk.h>
+#ifdef CONFIG_STATUS_LED
+# include <status_led.h>
+#endif
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# include <status_led.h>
+# define SHOW_BOOT_PROGRESS(arg)	show_boot_progress(arg)
+#else
+# define SHOW_BOOT_PROGRESS(arg)
+#endif
+
+
+#undef	IDE_DEBUG
+
+#ifdef	IDE_DEBUG
+#define	PRINTF(fmt,args...)	printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_IDE)
+
+/* Timings for IDE Interface
+ *
+ * SETUP / LENGTH / HOLD - cycles valid for 50 MHz clk
+ * 70	   165	    30	   PIO-Mode 0, [ns]
+ *  4	     9	     2		       [Cycles]
+ * 50	   125	    20	   PIO-Mode 1, [ns]
+ *  3	     7	     2		       [Cycles]
+ * 30	   100	    15	   PIO-Mode 2, [ns]
+ *  2	     6	     1		       [Cycles]
+ * 30	    80	    10	   PIO-Mode 3, [ns]
+ *  2	     5	     1		       [Cycles]
+ * 25	    70	    10	   PIO-Mode 4, [ns]
+ *  2	     4	     1		       [Cycles]
+ */
+
+const static pio_config_t pio_config_ns [IDE_MAX_PIO_MODE+1] =
+{
+    /*	Setup  Length  Hold  */
+	{ 70,	165,	30 },		/* PIO-Mode 0, [ns]	*/
+	{ 50,	125,	20 },		/* PIO-Mode 1, [ns]	*/
+	{ 30,	101,	15 },		/* PIO-Mode 2, [ns]	*/
+	{ 30,	 80,	10 },		/* PIO-Mode 3, [ns]	*/
+	{ 25,	 70,	10 },		/* PIO-Mode 4, [ns]	*/
+};
+
+static pio_config_t pio_config_clk [IDE_MAX_PIO_MODE+1];
+
+#ifndef	CFG_PIO_MODE
+#define	CFG_PIO_MODE	0		/* use a relaxed default */
+#endif
+static int pio_mode = CFG_PIO_MODE;
+
+/* Make clock cycles and always round up */
+
+#define PCMCIA_MK_CLKS( t, T ) (( (t) * (T) + 999U ) / 1000U )
+
+/* ------------------------------------------------------------------------- */
+
+/* Current I/O Device	*/
+static int curr_device = -1;
+
+/* Current offset for IDE0 / IDE1 bus access	*/
+ulong ide_bus_offset[CFG_IDE_MAXBUS] = {
+#if defined(CFG_ATA_IDE0_OFFSET)
+	CFG_ATA_IDE0_OFFSET,
+#endif
+#if defined(CFG_ATA_IDE1_OFFSET) && (CFG_IDE_MAXBUS > 1)
+	CFG_ATA_IDE1_OFFSET,
+#endif
+};
+
+#define	ATA_CURR_BASE(dev)	(CFG_ATA_BASE_ADDR+ide_bus_offset[IDE_BUS(dev)])
+
+static int	    ide_bus_ok[CFG_IDE_MAXBUS];
+
+static  block_dev_desc_t ide_dev_desc[CFG_IDE_MAXDEVICE];
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_IDE_LED
+static void  ide_led   (uchar led, uchar status);
+#else
+#define ide_led(a,b)	/* dummy */
+#endif
+
+#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 __inline__ outb(int dev, int port, unsigned char val);
+static unsigned char __inline__ inb(int dev, int port);
+static void input_swap_data(int dev, ulong *sect_buf, int words);
+static void input_data(int dev, ulong *sect_buf, int words);
+static void output_data(int dev, ulong *sect_buf, int words);
+static void ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
+
+
+#ifdef CONFIG_ATAPI
+static void	atapi_inquiry(block_dev_desc_t *dev_desc);
+ulong atapi_read (int device, ulong blknr, ulong blkcnt, ulong *buffer);
+#endif
+
+
+#ifdef CONFIG_IDE_8xx_DIRECT
+static void set_pcmcia_timing (int pmode);
+#else
+#define set_pcmcia_timing(a)	/* dummy */
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+int do_ide (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    int rcode = 0;
+
+    switch (argc) {
+    case 0:
+    case 1:
+	printf ("Usage:\n%s\n", cmdtp->usage);
+	return 1;
+    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<CFG_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 >= CFG_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<CFG_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;
+	}
+	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 ("\nIDE device %d: ", dev);
+		if (dev >= CFG_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;
+#if 0
+	} else if (strncmp(argv[1],"pio",4) == 0) {
+		int mode = (int)simple_strtoul(argv[2], NULL, 10);
+
+		if ((mode >= 0) && (mode <= IDE_MAX_PIO_MODE)) {
+			puts ("\nSetting ");
+			pio_mode = mode;
+			ide_init ();
+		} else {
+			printf ("\nInvalid PIO mode %d (0 ... %d only)\n",
+				mode, IDE_MAX_PIO_MODE);
+		}
+		return;
+#endif
+	}
+
+	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 ("\nIDE read: device %d block # %ld, count %ld ... ",
+			curr_device, blk, cnt);
+
+		n = ide_dev_desc[curr_device].block_read (curr_device,
+							  blk, cnt,
+							  (ulong *)addr);
+		/* flush cache after read */
+		flush_cache (addr, cnt*ide_dev_desc[curr_device].blksz);
+
+		printf ("%ld blocks read: %s\n",
+			n, (n==cnt) ? "OK" : "ERROR");
+		if (n==cnt) {
+			return 0;
+		} else {
+			return 1;
+		}
+	} else if (strcmp(argv[1],"write") == 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 ("\nIDE write: device %d block # %ld, count %ld ... ",
+			curr_device, blk, cnt);
+
+		n = ide_write (curr_device, blk, cnt, (ulong *)addr);
+
+		printf ("%ld blocks written: %s\n",
+			n, (n==cnt) ? "OK" : "ERROR");
+		if (n==cnt) {
+			return 0;
+		} else {
+			return 1;
+		}
+	} else {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		rcode = 1;
+	}
+
+	return rcode;
+    }
+}
+
+int do_diskboot (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);
+		SHOW_BOOT_PROGRESS (-1);
+		return 1;
+	}
+
+	if (!boot_device) {
+		puts ("\n** No boot device **\n");
+		SHOW_BOOT_PROGRESS (-1);
+		return 1;
+	}
+
+	dev = simple_strtoul(boot_device, &ep, 16);
+
+	if (ide_dev_desc[dev].type==DEV_TYPE_UNKNOWN) {
+		printf ("\n** Device %d not available\n", dev);
+		SHOW_BOOT_PROGRESS (-1);
+		return 1;
+	}
+
+	if (*ep) {
+		if (*ep != ':') {
+			puts ("\n** Invalid boot device, use `dev[:part]' **\n");
+			SHOW_BOOT_PROGRESS (-1);
+			return 1;
+		}
+		part = simple_strtoul(++ep, NULL, 16);
+	}
+	if (get_partition_info (&ide_dev_desc[dev], part, &info)) {
+		SHOW_BOOT_PROGRESS (-1);
+		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);
+		SHOW_BOOT_PROGRESS (-1);
+		return 1;
+	}
+
+	printf ("\nLoading from IDE 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 (ide_dev_desc[dev].block_read (dev, info.start, 1, (ulong *)addr) != 1) {
+		printf ("** Read error on %d:%d\n", dev, part);
+		SHOW_BOOT_PROGRESS (-1);
+		return 1;
+	}
+
+	hdr = (image_header_t *)addr;
+
+	if (ntohl(hdr->ih_magic) == IH_MAGIC) {
+
+		print_image_hdr (hdr);
+
+		cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
+		cnt += info.blksz - 1;
+		cnt /= info.blksz;
+		cnt -= 1;
+	} else {
+		printf("\n** Bad Magic Number **\n");
+		SHOW_BOOT_PROGRESS (-1);
+		return 1;
+	}
+
+	if (ide_dev_desc[dev].block_read (dev, info.start+1, cnt,
+		      (ulong *)(addr+info.blksz)) != cnt) {
+		printf ("** Read error on %d:%d\n", dev, part);
+		SHOW_BOOT_PROGRESS (-1);
+		return 1;
+	}
+
+
+	/* Loading ok, update default load address */
+
+	load_addr = addr;
+
+	/* 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);
+
+		do_bootm (cmdtp, 0, 1, local_args);
+		rcode = 1;
+	}
+	return rcode;
+}
+
+/* ------------------------------------------------------------------------- */
+
+void ide_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_IDE_8xx_DIRECT
+	volatile immap_t *immr = (immap_t *)CFG_IMMR;
+	volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);
+#endif
+	unsigned char c;
+	int i, bus;
+
+#ifdef CONFIG_IDE_8xx_PCCARD
+	extern int pcmcia_on (void);
+
+	WATCHDOG_RESET();
+
+	/* initialize the PCMCIA IDE adapter card */
+	if (pcmcia_on())
+		return;
+	udelay (1000000);	/* 1 s */
+#endif	/* CONFIG_IDE_8xx_PCCARD */
+
+	WATCHDOG_RESET();
+
+	/* Initialize PIO timing tables */
+	for (i=0; i <= IDE_MAX_PIO_MODE; ++i) {
+	    pio_config_clk[i].t_setup  = PCMCIA_MK_CLKS(pio_config_ns[i].t_setup,
+							    gd->bus_clk);
+	    pio_config_clk[i].t_length = PCMCIA_MK_CLKS(pio_config_ns[i].t_length,
+							    gd->bus_clk);
+	    pio_config_clk[i].t_hold   = PCMCIA_MK_CLKS(pio_config_ns[i].t_hold,
+							    gd->bus_clk);
+	    PRINTF ("PIO Mode %d: setup=%2d ns/%d clk"
+		    "  len=%3d ns/%d clk"
+		    "  hold=%2d ns/%d clk\n",
+		    i,
+		    pio_config_ns[i].t_setup,  pio_config_clk[i].t_setup,
+		    pio_config_ns[i].t_length, pio_config_clk[i].t_length,
+		    pio_config_ns[i].t_hold,   pio_config_clk[i].t_hold);
+	}
+
+	/* Reset the IDE just to be sure.
+	 * Light LED's to show
+	 */
+	ide_led ((LED_IDE1 | LED_IDE2), 1);		/* LED's on	*/
+	ide_reset (); /* ATAPI Drives seems to need a proper IDE Reset */
+
+#ifdef CONFIG_IDE_8xx_DIRECT
+	/* PCMCIA / IDE initialization for common mem space */
+	pcmp->pcmc_pgcrb = 0;
+#endif
+
+	/* start in PIO mode 0 - most relaxed timings */
+	pio_mode = 0;
+	set_pcmcia_timing (pio_mode);
+
+	/*
+	 * Wait for IDE to get ready.
+	 * According to spec, this can take up to 31 seconds!
+	 */
+	for (bus=0; bus<CFG_IDE_MAXBUS; ++bus) {
+		int dev = bus * (CFG_IDE_MAXDEVICE / CFG_IDE_MAXBUS);
+
+		printf ("Bus %d: ", bus);
+
+		ide_bus_ok[bus] = 0;
+
+		/* Select device
+		 */
+		udelay (100000);		/* 100 ms */
+		outb (dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
+		udelay (100000);		/* 100 ms */
+
+		i = 0;
+		do {
+			udelay (10000);		/* 10 ms */
+
+			c = inb (dev, ATA_STATUS);
+			i++;
+			if (i > (ATA_RESET_TIME * 100)) {
+				puts ("** Timeout **\n");
+				ide_led ((LED_IDE1 | LED_IDE2), 0); /* LED's off */
+				return;
+			}
+			if ((i >= 100) && ((i%100)==0)) {
+				putc ('.');
+			}
+		} while (c & ATA_STAT_BUSY);
+
+		if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
+			puts ("not available  ");
+			PRINTF ("Status = 0x%02X ", c);
+#ifndef CONFIG_ATAPI /* ATAPI Devices do not set DRDY */
+		} else  if ((c & ATA_STAT_READY) == 0) {
+			puts ("not available  ");
+			PRINTF ("Status = 0x%02X ", c);
+#endif
+		} else {
+			puts ("OK ");
+			ide_bus_ok[bus] = 1;
+		}
+		WATCHDOG_RESET();
+	}
+	putc ('\n');
+
+	ide_led ((LED_IDE1 | LED_IDE2), 0);	/* LED's off	*/
+
+	curr_device = -1;
+	for (i=0; i<CFG_IDE_MAXDEVICE; ++i) {
+#ifdef CONFIG_IDE_LED
+		int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
+#endif
+		ide_dev_desc[i].if_type=IF_TYPE_IDE;
+		ide_dev_desc[i].dev=i;
+		ide_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
+		ide_dev_desc[i].blksz=0;
+		ide_dev_desc[i].lba=0;
+		ide_dev_desc[i].block_read=ide_read;
+		if (!ide_bus_ok[IDE_BUS(i)])
+			continue;
+		ide_led (led, 1);		/* LED on	*/
+		ide_ident(&ide_dev_desc[i]);
+		ide_led (led, 0);		/* LED off	*/
+		dev_print(&ide_dev_desc[i]);
+/*		ide_print (i); */
+		if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
+			init_part (&ide_dev_desc[i]);			/* initialize partition type */
+			if (curr_device < 0)
+				curr_device = i;
+		}
+	}
+	WATCHDOG_RESET();
+}
+
+/* ------------------------------------------------------------------------- */
+
+block_dev_desc_t * ide_get_dev(int dev)
+{
+	return ((block_dev_desc_t *)&ide_dev_desc[dev]);
+}
+
+
+#ifdef CONFIG_IDE_8xx_DIRECT
+
+static void
+set_pcmcia_timing (int pmode)
+{
+	volatile immap_t *immr = (immap_t *)CFG_IMMR;
+	volatile pcmconf8xx_t *pcmp = &(immr->im_pcmcia);
+	ulong timings;
+
+	PRINTF ("Set timing for PIO Mode %d\n", pmode);
+
+	timings = PCMCIA_SHT(pio_config_clk[pmode].t_hold)
+		| PCMCIA_SST(pio_config_clk[pmode].t_setup)
+		| PCMCIA_SL (pio_config_clk[pmode].t_length)
+		;
+
+	/* IDE 0
+	 */
+	pcmp->pcmc_pbr0 = CFG_PCMCIA_PBR0;
+	pcmp->pcmc_por0 = CFG_PCMCIA_POR0
+#if (CFG_PCMCIA_POR0 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR0: %08x  POR0: %08x\n", pcmp->pcmc_pbr0, pcmp->pcmc_por0);
+
+	pcmp->pcmc_pbr1 = CFG_PCMCIA_PBR1;
+	pcmp->pcmc_por1 = CFG_PCMCIA_POR1
+#if (CFG_PCMCIA_POR1 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR1: %08x  POR1: %08x\n", pcmp->pcmc_pbr1, pcmp->pcmc_por1);
+
+	pcmp->pcmc_pbr2 = CFG_PCMCIA_PBR2;
+	pcmp->pcmc_por2 = CFG_PCMCIA_POR2
+#if (CFG_PCMCIA_POR2 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR2: %08x  POR2: %08x\n", pcmp->pcmc_pbr2, pcmp->pcmc_por2);
+
+	pcmp->pcmc_pbr3 = CFG_PCMCIA_PBR3;
+	pcmp->pcmc_por3 = CFG_PCMCIA_POR3
+#if (CFG_PCMCIA_POR3 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR3: %08x  POR3: %08x\n", pcmp->pcmc_pbr3, pcmp->pcmc_por3);
+
+	/* IDE 1
+	 */
+	pcmp->pcmc_pbr4 = CFG_PCMCIA_PBR4;
+	pcmp->pcmc_por4 = CFG_PCMCIA_POR4
+#if (CFG_PCMCIA_POR4 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR4: %08x  POR4: %08x\n", pcmp->pcmc_pbr4, pcmp->pcmc_por4);
+
+	pcmp->pcmc_pbr5 = CFG_PCMCIA_PBR5;
+	pcmp->pcmc_por5 = CFG_PCMCIA_POR5
+#if (CFG_PCMCIA_POR5 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR5: %08x  POR5: %08x\n", pcmp->pcmc_pbr5, pcmp->pcmc_por5);
+
+	pcmp->pcmc_pbr6 = CFG_PCMCIA_PBR6;
+	pcmp->pcmc_por6 = CFG_PCMCIA_POR6
+#if (CFG_PCMCIA_POR6 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR6: %08x  POR6: %08x\n", pcmp->pcmc_pbr6, pcmp->pcmc_por6);
+
+	pcmp->pcmc_pbr7 = CFG_PCMCIA_PBR7;
+	pcmp->pcmc_por7 = CFG_PCMCIA_POR7
+#if (CFG_PCMCIA_POR7 != 0)
+			| timings
+#endif
+			;
+	PRINTF ("PBR7: %08x  POR7: %08x\n", pcmp->pcmc_pbr7, pcmp->pcmc_por7);
+
+}
+
+#endif	/* CONFIG_IDE_8xx_DIRECT */
+
+/* ------------------------------------------------------------------------- */
+
+static void __inline__
+outb(int dev, int port, unsigned char val)
+{
+	/* Ensure I/O operations complete */
+	__asm__ volatile("eieio");
+	*((uchar *)(ATA_CURR_BASE(dev)+port)) = val;
+#if 0
+	printf ("OUTB: 0x%08lx <== 0x%02x\n", ATA_CURR_BASE(dev)+port, val);
+#endif
+}
+
+static unsigned char __inline__
+inb(int dev, int port)
+{
+	uchar val;
+	/* Ensure I/O operations complete */
+	__asm__ volatile("eieio");
+	val = *((uchar *)(ATA_CURR_BASE(dev)+port));
+#if 0
+	printf ("INB: 0x%08lx ==> 0x%02x\n", ATA_CURR_BASE(dev)+port, val);
+#endif
+	return (val);
+}
+
+__inline__ unsigned ld_le16(const volatile unsigned short *addr)
+{
+	unsigned val;
+
+	__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r"(val) : "r"(addr), "m"(*addr));
+	return val;
+}
+
+static void
+input_swap_data(int dev, ulong *sect_buf, int words)
+{
+	volatile ushort	*pbuf = (ushort *)(ATA_CURR_BASE(dev)+ATA_DATA_REG);
+	ushort	*dbuf = (ushort *)sect_buf;
+
+	while (words--) {
+		*dbuf++ = ld_le16(pbuf);
+		*dbuf++ = ld_le16(pbuf);
+	}
+}
+
+static void
+output_data(int dev, ulong *sect_buf, int words)
+{
+	ushort	*dbuf;
+	volatile ushort	*pbuf;
+
+	pbuf = (ushort *)(ATA_CURR_BASE(dev)+ATA_DATA_REG);
+	dbuf = (ushort *)sect_buf;
+	while (words--) {
+		__asm__ volatile ("eieio");
+		*pbuf = *dbuf++;
+		__asm__ volatile ("eieio");
+		*pbuf = *dbuf++;
+	}
+}
+
+static void
+input_data(int dev, ulong *sect_buf, int words)
+{
+	ushort	*dbuf;
+	volatile ushort	*pbuf;
+
+	pbuf = (ushort *)(ATA_CURR_BASE(dev)+ATA_DATA_REG);
+	dbuf = (ushort *)sect_buf;
+	while (words--) {
+		__asm__ volatile ("eieio");
+		*dbuf++ = *pbuf;
+		__asm__ volatile ("eieio");
+		*dbuf++ = *pbuf;
+	}
+}
+
+/* -------------------------------------------------------------------------
+ */
+static void ide_ident (block_dev_desc_t *dev_desc)
+{
+	ulong iobuf[ATA_SECTORWORDS];
+	unsigned char c;
+	hd_driveid_t *iop = (hd_driveid_t *)iobuf;
+
+#if 0
+	int mode, cycle_time;
+#endif
+	int device;
+	device=dev_desc->dev;
+	printf ("  Device %d: ", device);
+
+	ide_led (DEVICE_LED(device), 1);	/* LED on	*/
+	/* Select device
+	 */
+	outb (device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	dev_desc->if_type=IF_TYPE_IDE;
+#ifdef CONFIG_ATAPI
+	/* check signature */
+	if ((inb(device,ATA_SECT_CNT)==0x01) &&
+		 (inb(device,ATA_SECT_NUM)==0x01) &&
+		 (inb(device,ATA_CYL_LOW)==0x14) &&
+		 (inb(device,ATA_CYL_HIGH)==0xEB)) {
+		/* ATAPI Signature found */
+		dev_desc->if_type=IF_TYPE_ATAPI;
+		/* Start Ident Command
+		 */
+		outb (device, ATA_COMMAND, ATAPI_CMD_IDENT);
+		/*
+		 * Wait for completion - ATAPI devices need more time
+		 * to become ready
+		 */
+		c = ide_wait (device, ATAPI_TIME_OUT);
+	}
+	else
+#endif
+	{
+		/* Start Ident Command
+		 */
+		outb (device, ATA_COMMAND, ATA_CMD_IDENT);
+
+		/* Wait for completion
+		 */
+		c = ide_wait (device, IDE_TIME_OUT);
+	}
+	ide_led (DEVICE_LED(device), 0);	/* LED off	*/
+
+	if (((c & ATA_STAT_DRQ) == 0) ||
+	    ((c & (ATA_STAT_FAULT|ATA_STAT_ERR)) != 0) ) {
+		dev_desc->type=DEV_TYPE_UNKNOWN;
+		return;
+	}
+
+	input_swap_data (device, iobuf, ATA_SECTORWORDS);
+
+	ident_cpy (dev_desc->revision, iop->fw_rev, sizeof(dev_desc->revision));
+	ident_cpy (dev_desc->vendor, iop->model, sizeof(dev_desc->vendor));
+	ident_cpy (dev_desc->product, iop->serial_no, sizeof(dev_desc->product));
+
+	if ((iop->config & 0x0080)==0x0080)
+		dev_desc->removable = 1;
+	else
+		dev_desc->removable = 0;
+
+#if 0
+	/*
+	 * Drive PIO mode autoselection
+	 */
+	mode = iop->tPIO;
+
+	printf ("tPIO = 0x%02x = %d\n",mode, mode);
+	if (mode > 2) {		/* 2 is maximum allowed tPIO value */
+		mode = 2;
+		PRINTF ("Override tPIO -> 2\n");
+	}
+	if (iop->field_valid & 2) {	/* drive implements ATA2? */
+		PRINTF ("Drive implements ATA2\n");
+		if (iop->capability & 8) {	/* drive supports use_iordy? */
+			cycle_time = iop->eide_pio_iordy;
+		} else {
+			cycle_time = iop->eide_pio;
+		}
+		PRINTF ("cycle time = %d\n", cycle_time);
+		mode = 4;
+		if (cycle_time > 120) mode = 3;	/* 120 ns for PIO mode 4 */
+		if (cycle_time > 180) mode = 2;	/* 180 ns for PIO mode 3 */
+		if (cycle_time > 240) mode = 1;	/* 240 ns for PIO mode 4 */
+		if (cycle_time > 383) mode = 0;	/* 383 ns for PIO mode 4 */
+	}
+	printf ("PIO mode to use: PIO %d\n", mode);
+#endif /* 0 */
+
+#ifdef CONFIG_ATAPI
+	if (dev_desc->if_type==IF_TYPE_ATAPI) {
+		atapi_inquiry(dev_desc);
+		return;
+	}
+#endif /* CONFIG_ATAPI */
+
+	/* swap shorts */
+	dev_desc->lba = (iop->lba_capacity << 16) | (iop->lba_capacity >> 16);
+	/* assuming HD */
+	dev_desc->type=DEV_TYPE_HARDDISK;
+	dev_desc->blksz=ATA_BLOCKSIZE;
+	dev_desc->lun=0; /* just to fill something in... */
+
+#if 0 	/* only used to test the powersaving mode,
+	 * if enabled, the drive goes after 5 sec
+	 * in standby mode */
+	outb (device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	c = ide_wait (device, IDE_TIME_OUT);
+	outb (device, ATA_SECT_CNT, 1);
+	outb (device, ATA_LBA_LOW,  0);
+	outb (device, ATA_LBA_MID,  0);
+	outb (device, ATA_LBA_HIGH, 0);
+	outb (device, ATA_DEV_HD,   ATA_LBA		|
+				    ATA_DEVICE(device));
+	outb (device, ATA_COMMAND,  0xe3);
+	udelay (50);
+	c = ide_wait (device, IDE_TIME_OUT);	/* can't take over 500 ms */
+#endif
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+ulong ide_read (int device, ulong blknr, ulong blkcnt, ulong *buffer)
+{
+	ulong n = 0;
+	unsigned char c;
+	unsigned char pwrsave=0; /* power save */
+
+	PRINTF ("ide_read dev %d start %lX, blocks %lX buffer at %lX\n",
+		device, blknr, blkcnt, (ulong)buffer);
+
+	ide_led (DEVICE_LED(device), 1);	/* LED on	*/
+
+	/* Select device
+	 */
+	outb (device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	c = ide_wait (device, IDE_TIME_OUT);
+
+	if (c & ATA_STAT_BUSY) {
+		printf ("IDE read: device %d not ready\n", device);
+		goto IDE_READ_E;
+	}
+
+	/* first check if the drive is in Powersaving mode, if yes,
+	 * increase the timeout value */
+	outb (device, ATA_COMMAND,  ATA_CMD_CHK_PWR);
+	udelay (50);
+
+	c = ide_wait (device, IDE_TIME_OUT);	/* can't take over 500 ms */
+
+	if (c & ATA_STAT_BUSY) {
+		printf ("IDE read: device %d not ready\n", device);
+		goto IDE_READ_E;
+	}
+	if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
+		printf ("No Powersaving mode %X\n", c);
+	} else {
+		c = inb(device,ATA_SECT_CNT);
+		PRINTF("Powersaving %02X\n",c);
+		if(c==0)
+			pwrsave=1;
+	}
+
+
+	while (blkcnt-- > 0) {
+
+		c = ide_wait (device, IDE_TIME_OUT);
+
+		if (c & ATA_STAT_BUSY) {
+			printf ("IDE read: device %d not ready\n", device);
+			break;
+		}
+
+		outb (device, ATA_SECT_CNT, 1);
+		outb (device, ATA_LBA_LOW,  (blknr >>  0) & 0xFF);
+		outb (device, ATA_LBA_MID,  (blknr >>  8) & 0xFF);
+		outb (device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
+		outb (device, ATA_DEV_HD,   ATA_LBA		|
+					    ATA_DEVICE(device)	|
+					    ((blknr >> 24) & 0xF) );
+		outb (device, ATA_COMMAND,  ATA_CMD_READ);
+
+		udelay (50);
+
+		if(pwrsave) {
+			c = ide_wait (device, IDE_SPIN_UP_TIME_OUT);	/* may take up to 4 sec */
+			pwrsave=0;
+		} else {
+			c = ide_wait (device, IDE_TIME_OUT);	/* can't take over 500 ms */
+		}
+
+		if ((c&(ATA_STAT_DRQ|ATA_STAT_BUSY|ATA_STAT_ERR)) != ATA_STAT_DRQ) {
+			printf ("Error (no IRQ) dev %d blk %ld: status 0x%02x\n",
+				device, blknr, c);
+			break;
+		}
+
+		input_data (device, buffer, ATA_SECTORWORDS);
+		(void) inb (device, ATA_STATUS);	/* clear IRQ */
+
+		++n;
+		++blknr;
+		buffer += ATA_SECTORWORDS;
+	}
+IDE_READ_E:
+	ide_led (DEVICE_LED(device), 0);	/* LED off	*/
+	return (n);
+}
+
+/* ------------------------------------------------------------------------- */
+
+
+ulong ide_write (int device, ulong blknr, ulong blkcnt, ulong *buffer)
+{
+	ulong n = 0;
+	unsigned char c;
+
+	ide_led (DEVICE_LED(device), 1);	/* LED on	*/
+
+	/* Select device
+	 */
+	outb (device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+
+	while (blkcnt-- > 0) {
+
+		c = ide_wait (device, IDE_TIME_OUT);
+
+		if (c & ATA_STAT_BUSY) {
+			printf ("IDE read: device %d not ready\n", device);
+			goto WR_OUT;
+		}
+
+		outb (device, ATA_SECT_CNT, 1);
+		outb (device, ATA_LBA_LOW,  (blknr >>  0) & 0xFF);
+		outb (device, ATA_LBA_MID,  (blknr >>  8) & 0xFF);
+		outb (device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
+		outb (device, ATA_DEV_HD,   ATA_LBA		|
+					    ATA_DEVICE(device)	|
+					    ((blknr >> 24) & 0xF) );
+		outb (device, ATA_COMMAND,  ATA_CMD_WRITE);
+
+		udelay (50);
+
+		c = ide_wait (device, IDE_TIME_OUT);	/* can't take over 500 ms */
+
+		if ((c&(ATA_STAT_DRQ|ATA_STAT_BUSY|ATA_STAT_ERR)) != ATA_STAT_DRQ) {
+			printf ("Error (no IRQ) dev %d blk %ld: status 0x%02x\n",
+				device, blknr, c);
+			goto WR_OUT;
+		}
+
+		output_data (device, buffer, ATA_SECTORWORDS);
+		c = inb (device, ATA_STATUS);	/* clear IRQ */
+		++n;
+		++blknr;
+		buffer += ATA_SECTORWORDS;
+	}
+WR_OUT:
+	ide_led (DEVICE_LED(device), 0);	/* LED off	*/
+	return (n);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * copy src to dest, skipping leading and trailing blanks and null
+ * terminate the string
+ */
+static void 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';
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Wait until Busy bit is off, or timeout (in ms)
+ * Return last status
+ */
+static uchar ide_wait (int dev, ulong t)
+{
+	ulong delay = 10 * t;		/* poll every 100 us */
+	uchar c;
+
+	while ((c = inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
+		udelay (100);
+		if (delay-- == 0) {
+			break;
+		}
+	}
+	return (c);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_IDE_RESET
+extern void ide_set_reset(int idereset);
+
+static void ide_reset (void)
+{
+#if defined(CFG_PB_12V_ENABLE) || defined(CFG_PB_IDE_MOTOR)
+	volatile immap_t *immr = (immap_t *)CFG_IMMR;
+#endif
+	int i;
+
+	curr_device = -1;
+	for (i=0; i<CFG_IDE_MAXBUS; ++i)
+		ide_bus_ok[i] = 0;
+	for (i=0; i<CFG_IDE_MAXDEVICE; ++i)
+		ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
+
+	ide_set_reset (1); /* assert reset */
+
+	WATCHDOG_RESET();
+
+#ifdef CFG_PB_12V_ENABLE
+	immr->im_cpm.cp_pbdat &= ~(CFG_PB_12V_ENABLE);	/* 12V Enable output OFF */
+	immr->im_cpm.cp_pbpar &= ~(CFG_PB_12V_ENABLE);
+	immr->im_cpm.cp_pbodr &= ~(CFG_PB_12V_ENABLE);
+	immr->im_cpm.cp_pbdir |=   CFG_PB_12V_ENABLE;
+
+	/* wait 500 ms for the voltage to stabilize
+	 */
+	for (i=0; i<500; ++i) {
+		udelay (1000);
+	}
+
+	immr->im_cpm.cp_pbdat |=   CFG_PB_12V_ENABLE;	/* 12V Enable output ON */
+#endif	/* CFG_PB_12V_ENABLE */
+
+#ifdef CFG_PB_IDE_MOTOR
+	/* configure IDE Motor voltage monitor pin as input */
+	immr->im_cpm.cp_pbpar &= ~(CFG_PB_IDE_MOTOR);
+	immr->im_cpm.cp_pbodr &= ~(CFG_PB_IDE_MOTOR);
+	immr->im_cpm.cp_pbdir &= ~(CFG_PB_IDE_MOTOR);
+
+	/* wait up to 1 s for the motor voltage to stabilize
+	 */
+	for (i=0; i<1000; ++i) {
+		if ((immr->im_cpm.cp_pbdat & CFG_PB_IDE_MOTOR) != 0) {
+			break;
+		}
+		udelay (1000);
+	}
+
+	if (i == 1000) {	/* Timeout */
+		printf ("\nWarning: 5V for IDE Motor missing\n");
+# ifdef CONFIG_STATUS_LED
+#  ifdef STATUS_LED_YELLOW
+		status_led_set  (STATUS_LED_YELLOW, STATUS_LED_ON );
+#  endif
+#  ifdef STATUS_LED_GREEN
+		status_led_set  (STATUS_LED_GREEN,  STATUS_LED_OFF);
+#  endif
+# endif	/* CONFIG_STATUS_LED */
+	}
+#endif	/* CFG_PB_IDE_MOTOR */
+
+	WATCHDOG_RESET();
+
+	/* de-assert RESET signal */
+	ide_set_reset(0);
+
+	/* wait 250 ms */
+	for (i=0; i<250; ++i) {
+		udelay (1000);
+	}
+}
+
+#endif	/* CONFIG_IDE_RESET */
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_IDE_LED
+
+static	uchar	led_buffer = 0;		/* Buffer for current LED status	*/
+
+static void ide_led (uchar led, uchar status)
+{
+	uchar *led_port = LED_PORT;
+
+	if (status)	{		/* switch LED on	*/
+		led_buffer |=  led;
+	} else {			/* switch LED off	*/
+		led_buffer &= ~led;
+	}
+
+	*led_port = led_buffer;
+}
+
+#endif	/* CONFIG_IDE_LED */
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_ATAPI
+/****************************************************************************
+ * ATAPI Support
+ */
+
+
+
+#undef	ATAPI_DEBUG
+
+#ifdef	ATAPI_DEBUG
+#define	AT_PRINTF(fmt,args...)	printf (fmt ,##args)
+#else
+#define AT_PRINTF(fmt,args...)
+#endif
+
+/* since ATAPI may use commands with not 4 bytes alligned length
+ * we have our own transfer functions, 2 bytes alligned */
+static void
+output_data_shorts(int dev, ushort *sect_buf, int shorts)
+{
+	ushort	*dbuf;
+	volatile ushort	*pbuf;
+
+	pbuf = (ushort *)(ATA_CURR_BASE(dev)+ATA_DATA_REG);
+	dbuf = (ushort *)sect_buf;
+	while (shorts--) {
+		__asm__ volatile ("eieio");
+		*pbuf = *dbuf++;
+	}
+}
+
+static void
+input_data_shorts(int dev, ushort *sect_buf, int shorts)
+{
+	ushort	*dbuf;
+	volatile ushort	*pbuf;
+
+	pbuf = (ushort *)(ATA_CURR_BASE(dev)+ATA_DATA_REG);
+	dbuf = (ushort *)sect_buf;
+	while (shorts--) {
+		__asm__ volatile ("eieio");
+		*dbuf++ = *pbuf;
+	}
+}
+
+/*
+ * Wait until (Status & mask) == res, or timeout (in ms)
+ * Return last status
+ * This is used since some ATAPI CD ROMs clears their Busy Bit first
+ * and then they set their DRQ Bit
+ */
+static uchar atapi_wait_mask (int dev, ulong t,uchar mask, uchar res)
+{
+	ulong delay = 10 * t;		/* poll every 100 us */
+	uchar c;
+
+	c = inb(dev,ATA_DEV_CTL); /* prevents to read the status before valid */
+	while (((c = inb(dev, ATA_STATUS)) & mask)
+			!= res) {
+		/* break if error occurs (doesn't make sense to wait more) */
+		if((c & ATA_STAT_ERR)==ATA_STAT_ERR)
+			break;
+		udelay (100);
+		if (delay-- == 0) {
+			break;
+		}
+	}
+	return (c);
+}
+
+/*
+ * issue an atapi command
+ */
+unsigned char atapi_issue(int device,unsigned char* ccb,int ccblen, unsigned char * buffer,int buflen)
+{
+	unsigned char c,err,mask,res;
+	int n;
+	ide_led (DEVICE_LED(device), 1);	/* LED on	*/
+
+	/* Select device
+	 */
+	mask = ATA_STAT_BUSY|ATA_STAT_DRQ;
+	res = 0;
+	outb (device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	c = atapi_wait_mask(device,ATAPI_TIME_OUT,mask,res);
+	if ((c & mask) != res) {
+		printf ("ATAPI_ISSUE: device %d not ready status %X\n", device,c);
+		err=0xFF;
+		goto AI_OUT;
+	}
+	/* write taskfile */
+	outb (device, ATA_ERROR_REG, 0); /* no DMA, no overlaped */
+	outb (device, ATA_CYL_LOW,  (unsigned char)(buflen & 0xFF));
+	outb (device, ATA_CYL_HIGH, (unsigned char)((buflen<<8) & 0xFF));
+	outb (device, ATA_DEV_HD,   ATA_LBA | ATA_DEVICE(device));
+
+	outb (device, ATA_COMMAND,  ATAPI_CMD_PACKET);
+	udelay (50);
+
+	mask = ATA_STAT_DRQ|ATA_STAT_BUSY|ATA_STAT_ERR;
+	res = ATA_STAT_DRQ;
+	c = atapi_wait_mask(device,ATAPI_TIME_OUT,mask,res);
+
+	if ((c & mask) != res) { /* DRQ must be 1, BSY 0 */
+		printf ("ATTAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status 0x%02x\n",device,c);
+		err=0xFF;
+		goto AI_OUT;
+	}
+
+	output_data_shorts (device, (unsigned short *)ccb,ccblen/2); /* write command block */
+ 	/* ATAPI Command written wait for completition */
+	udelay (5000); /* device must set bsy */
+
+	mask = ATA_STAT_DRQ|ATA_STAT_BUSY|ATA_STAT_ERR;
+	/* if no data wait for DRQ = 0 BSY = 0
+	 * if data wait for DRQ = 1 BSY = 0 */
+	res=0;
+	if(buflen)
+		res = ATA_STAT_DRQ;
+	c = atapi_wait_mask(device,ATAPI_TIME_OUT,mask,res);
+	if ((c & mask) != res ) {
+		if (c & ATA_STAT_ERR) {
+			err=(inb(device,ATA_ERROR_REG))>>4;
+			AT_PRINTF("atapi_issue 1 returned sense key %X status %02X\n",err,c);
+		} else {
+			printf ("ATTAPI_ISSUE: (no DRQ) after sending ccb (%x)  status 0x%02x\n", ccb[0],c);
+			err=0xFF;
+		}
+		goto AI_OUT;
+	}
+	n=inb(device, ATA_CYL_HIGH);
+	n<<=8;
+	n+=inb(device, ATA_CYL_LOW);
+	if(n>buflen) {
+		printf("ERROR, transfer bytes %d requested only %d\n",n,buflen);
+		err=0xff;
+		goto AI_OUT;
+	}
+	if((n==0)&&(buflen<0)) {
+		printf("ERROR, transfer bytes %d requested %d\n",n,buflen);
+		err=0xff;
+		goto AI_OUT;
+	}
+	if(n!=buflen) {
+		AT_PRINTF("WARNING, transfer bytes %d not equal with requested %d\n",n,buflen);
+	}
+	if(n!=0) { /* data transfer */
+		AT_PRINTF("ATAPI_ISSUE: %d Bytes to transfer\n",n);
+		 /* we transfer shorts */
+		n>>=1;
+		/* ok now decide if it is an in or output */
+		if ((inb(device, ATA_SECT_CNT)&0x02)==0) {
+			AT_PRINTF("Write to device\n");
+			output_data_shorts(device,(unsigned short *)buffer,n);
+		} else {
+			AT_PRINTF("Read from device @ %p shorts %d\n",buffer,n);
+			input_data_shorts(device,(unsigned short *)buffer,n);
+		}
+	}
+	udelay(5000); /* seems that some CD ROMs need this... */
+	mask = ATA_STAT_BUSY|ATA_STAT_ERR;
+	res=0;
+	c = atapi_wait_mask(device,ATAPI_TIME_OUT,mask,res);
+	if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
+		err=(inb(device,ATA_ERROR_REG) >> 4);
+		AT_PRINTF("atapi_issue 2 returned sense key %X status %X\n",err,c);
+	} else {
+		err = 0;
+	}
+AI_OUT:
+	ide_led (DEVICE_LED(device), 0);	/* LED off	*/
+	return (err);
+}
+
+/*
+ * sending the command to atapi_issue. If an status other than good
+ * returns, an request_sense will be issued
+ */
+
+#define ATAPI_DRIVE_NOT_READY 	100
+#define ATAPI_UNIT_ATTN		10
+
+unsigned char atapi_issue_autoreq (int device,
+				   unsigned char* ccb,
+				   int ccblen,
+				   unsigned char *buffer,
+				   int buflen)
+{
+	unsigned char sense_data[18],sense_ccb[12];
+	unsigned char res,key,asc,ascq;
+	int notready,unitattn;
+
+	unitattn=ATAPI_UNIT_ATTN;
+	notready=ATAPI_DRIVE_NOT_READY;
+
+retry:
+	res= atapi_issue(device,ccb,ccblen,buffer,buflen);
+	if (res==0)
+		return (0); /* Ok */
+
+	if (res==0xFF)
+		return (0xFF); /* error */
+
+	AT_PRINTF("(auto_req)atapi_issue returned sense key %X\n",res);
+
+	memset(sense_ccb,0,sizeof(sense_ccb));
+	memset(sense_data,0,sizeof(sense_data));
+	sense_ccb[0]=ATAPI_CMD_REQ_SENSE;
+	sense_ccb[4]=18; /* allocation Legnth */
+
+	res=atapi_issue(device,sense_ccb,12,sense_data,18);
+	key=(sense_data[2]&0xF);
+	asc=(sense_data[12]);
+	ascq=(sense_data[13]);
+
+	AT_PRINTF("ATAPI_CMD_REQ_SENSE returned %x\n",res);
+	AT_PRINTF(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
+		sense_data[0],
+		key,
+		asc,
+		ascq);
+
+	if((key==0))
+		return 0; /* ok device ready */
+
+	if((key==6)|| (asc==0x29) || (asc==0x28)) { /* Unit Attention */
+		if(unitattn-->0) {
+			udelay(200*1000);
+			goto retry;
+		}
+		printf("Unit Attention, tried %d\n",ATAPI_UNIT_ATTN);
+		goto error;
+	}
+	if((asc==0x4) && (ascq==0x1)) { /* not ready, but will be ready soon */
+		if (notready-->0) {
+			udelay(200*1000);
+			goto retry;
+		}
+		printf("Drive not ready, tried %d times\n",ATAPI_DRIVE_NOT_READY);
+		goto error;
+	}
+	if(asc==0x3a) {
+		AT_PRINTF("Media not present\n");
+		goto error;
+	}
+	printf ("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n",key,asc,ascq);
+error:
+	AT_PRINTF ("ERROR Sense key %02X ASC %02X ASCQ %02X\n",key,asc,ascq);
+	return (0xFF);
+}
+
+
+
+static void	atapi_inquiry(block_dev_desc_t * dev_desc)
+{
+	unsigned char ccb[12]; /* Command descriptor block */
+	unsigned char iobuf[64]; /* temp buf */
+	unsigned char c;
+	int device;
+
+	device=dev_desc->dev;
+	dev_desc->type=DEV_TYPE_UNKNOWN; /* not yet valid */
+	dev_desc->block_read=atapi_read;
+
+	memset(ccb,0,sizeof(ccb));
+	memset(iobuf,0,sizeof(iobuf));
+
+	ccb[0]=ATAPI_CMD_INQUIRY;
+	ccb[4]=40; /* allocation Legnth */
+	c=atapi_issue_autoreq(device,ccb,12,(unsigned char *)iobuf,40);
+
+	AT_PRINTF("ATAPI_CMD_INQUIRY returned %x\n",c);
+	if (c!=0)
+		return;
+
+	/* copy device ident strings */
+	ident_cpy(dev_desc->vendor,&iobuf[8],8);
+	ident_cpy(dev_desc->product,&iobuf[16],16);
+	ident_cpy(dev_desc->revision,&iobuf[32],5);
+
+	dev_desc->lun=0;
+	dev_desc->lba=0;
+	dev_desc->blksz=0;
+	dev_desc->type=iobuf[0] & 0x1f;
+
+	if ((iobuf[1]&0x80)==0x80)
+		dev_desc->removable = 1;
+	else
+		dev_desc->removable = 0;
+
+	memset(ccb,0,sizeof(ccb));
+	memset(iobuf,0,sizeof(iobuf));
+	ccb[0]=ATAPI_CMD_START_STOP;
+	ccb[4]=0x03; /* start */
+
+	c=atapi_issue_autoreq(device,ccb,12,(unsigned char *)iobuf,0);
+
+	AT_PRINTF("ATAPI_CMD_START_STOP returned %x\n",c);
+	if (c!=0)
+		return;
+
+	memset(ccb,0,sizeof(ccb));
+	memset(iobuf,0,sizeof(iobuf));
+	c=atapi_issue_autoreq(device,ccb,12,(unsigned char *)iobuf,0);
+
+	AT_PRINTF("ATAPI_CMD_UNIT_TEST_READY returned %x\n",c);
+	if (c!=0)
+		return;
+
+	memset(ccb,0,sizeof(ccb));
+	memset(iobuf,0,sizeof(iobuf));
+	ccb[0]=ATAPI_CMD_READ_CAP;
+	c=atapi_issue_autoreq(device,ccb,12,(unsigned char *)iobuf,8);
+	AT_PRINTF("ATAPI_CMD_READ_CAP returned %x\n",c);
+	if (c!=0)
+		return;
+
+	AT_PRINTF("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
+		iobuf[0],iobuf[1],iobuf[2],iobuf[3],
+		iobuf[4],iobuf[5],iobuf[6],iobuf[7]);
+
+	dev_desc->lba  =((unsigned long)iobuf[0]<<24) +
+			((unsigned long)iobuf[1]<<16) +
+			((unsigned long)iobuf[2]<< 8) +
+			((unsigned long)iobuf[3]);
+	dev_desc->blksz=((unsigned long)iobuf[4]<<24) +
+			((unsigned long)iobuf[5]<<16) +
+			((unsigned long)iobuf[6]<< 8) +
+			((unsigned long)iobuf[7]);
+	return;
+}
+
+
+/*
+ * atapi_read:
+ * we transfer only one block per command, since the multiple DRQ per
+ * command is not yet implemented
+ */
+#define ATAPI_READ_MAX_BYTES	2048	/* we read max 2kbytes */
+#define ATAPI_READ_BLOCK_SIZE	2048	/* assuming CD part */
+#define ATAPI_READ_MAX_BLOCK ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE	/* max blocks */
+
+ulong atapi_read (int device, ulong blknr, ulong blkcnt, ulong *buffer)
+{
+	ulong n = 0;
+	unsigned char ccb[12]; /* Command descriptor block */
+	ulong cnt;
+
+	AT_PRINTF("atapi_read dev %d start %lX, blocks %lX buffer at %lX\n",
+		device, blknr, blkcnt, (ulong)buffer);
+
+	do {
+		if (blkcnt>ATAPI_READ_MAX_BLOCK) {
+			cnt=ATAPI_READ_MAX_BLOCK;
+		} else {
+			cnt=blkcnt;
+		}
+		ccb[0]=ATAPI_CMD_READ_12;
+		ccb[1]=0; /* reserved */
+		ccb[2]=(unsigned char) (blknr>>24) & 0xFF; /* MSB Block */
+		ccb[3]=(unsigned char) (blknr>>16) & 0xFF; /*  */
+		ccb[4]=(unsigned char) (blknr>> 8) & 0xFF;
+		ccb[5]=(unsigned char)  blknr      & 0xFF; /* LSB Block */
+		ccb[6]=(unsigned char) (cnt  >>24) & 0xFF; /* MSB Block count */
+		ccb[7]=(unsigned char) (cnt  >>16) & 0xFF;
+		ccb[8]=(unsigned char) (cnt  >> 8) & 0xFF;
+		ccb[9]=(unsigned char)  cnt	   & 0xFF; /* LSB Block */
+		ccb[10]=0; /* reserved */
+		ccb[11]=0; /* reserved */
+
+		if (atapi_issue_autoreq(device,ccb,12,
+					(unsigned char *)buffer,
+					cnt*ATAPI_READ_BLOCK_SIZE) == 0xFF) {
+			return (n);
+		}
+		n+=cnt;
+		blkcnt-=cnt;
+		blknr+=cnt;
+		buffer+=cnt*(ATAPI_READ_BLOCK_SIZE/4); /* ulong blocksize in ulong */
+	} while (blkcnt > 0);
+	return (n);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#endif /* CONFIG_ATAPI */
+
+#endif	/* CONFIG_COMMANDS & CFG_CMD_IDE */