ide-probe updates:

o byte -> u8
o drive_is_flashcard() moved to probe code
o ide-iops changes
o various cleanups
o remove useless ide_lock debug stuff

drivers/ide/ide-probe.c

@@ -52,46 +52,69 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
-static inline void do_identify (ide_drive_t *drive, byte cmd)
+/*
+ * CompactFlash cards and their brethern pretend to be removable
+ * hard disks, except:
+ *	(1) they never have a slave unit, and
+ *	(2) they don't have doorlock mechanisms.
+ * This test catches them, and is invoked elsewhere when setting
+ * appropriate config bits.
+ *
+ * FIXME: This treatment is probably applicable for *all* PCMCIA (PC CARD)
+ * devices, so in linux 2.3.x we should change this to just treat all PCMCIA
+ * drives this way, and get rid of the model-name tests below
+ * (too big of an interface change for 2.2.x).
+ * At that time, we might also consider parameterizing the timeouts and retries,
+ * since these are MUCH faster than mechanical drives.	-M.Lord
+ */
+inline int drive_is_flashcard (ide_drive_t *drive)
+{
+	struct hd_driveid *id = drive->id;
+
+	if (drive->removable && id != NULL) {
+		if (id->config == 0x848a) return 1;	/* CompactFlash */
+		if (!strncmp(id->model, "KODAK ATA_FLASH", 15)	/* Kodak */
+		 || !strncmp(id->model, "Hitachi CV", 10)	/* Hitachi */
+		 || !strncmp(id->model, "SunDisk SDCFB", 13)	/* SunDisk */
+		 || !strncmp(id->model, "HAGIWARA HPC", 12)	/* Hagiwara */
+		 || !strncmp(id->model, "LEXAR ATA_FLASH", 15)	/* Lexar */
+		 || !strncmp(id->model, "ATA_FLASH", 9))	/* Simple Tech */
+		{
+			return 1;	/* yes, it is a flash memory card */
+		}
+	}
+	return 0;	/* no, it is not a flash memory card */
+}
+
+static inline void do_identify (ide_drive_t *drive, u8 cmd)
 {
 	ide_hwif_t *hwif = HWIF(drive);
 	int bswap = 1;
 	struct hd_driveid *id;
 
-	id = drive->id = kmalloc (SECTOR_WORDS*4, GFP_ATOMIC);	/* called with interrupts disabled! */
+	/* called with interrupts disabled! */
+	id = drive->id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC);
 	if (!id) {
-		printk(KERN_WARNING "(ide-probe::do_identify) Out of memory.\n");
+		printk(KERN_WARNING "(ide-probe::do_identify) "
+			"Out of memory.\n");
 		goto err_kmalloc;
 	}
 	/* read 512 bytes of id info */
-#if 1
-	ata_input_data(drive, id, SECTOR_WORDS);
-#else
-	{
-		unsigned long	*ptr = (unsigned long *)id ;
-		unsigned long	lcount = 256/2 ;
-                // printk("IDE_DATA_REG = %#lx",IDE_DATA_REG);
-		while( lcount-- )
-			*ptr++ = inl(IDE_DATA_REG);
-	}
-#endif
+	hwif->ata_input_data(drive, id, SECTOR_WORDS);
+
 	local_irq_enable();
 	ide_fix_driveid(id);
 
-	if (id->word156 == 0x4d42) {
-		printk("%s: drive->id->word156 == 0x%04x \n",
-			drive->name, drive->id->word156);
-	}
-
 	if (!drive->forced_lun)
 		drive->last_lun = id->last_lun & 0x7;
+
 #if defined (CONFIG_SCSI_EATA_DMA) || defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA)
 	/*
 	 * EATA SCSI controllers do a hardware ATA emulation:
 	 * Ignore them if there is a driver for them available.
 	 */
-	if ((id->model[0] == 'P' && id->model[1] == 'M')
-	 || (id->model[0] == 'S' && id->model[1] == 'K')) {
+	if ((id->model[0] == 'P' && id->model[1] == 'M') ||
+	    (id->model[0] == 'S' && id->model[1] == 'K')) {
 		printk("%s: EATA SCSI HBA %.10s\n", drive->name, id->model);
 		goto err_misc;
 	}
@@ -105,16 +128,18 @@ static inline void do_identify (ide_drive_t *drive, byte cmd)
 		if ((id->model[0] == 'N' && id->model[1] == 'E') /* NEC */
 		 || (id->model[0] == 'F' && id->model[1] == 'X') /* Mitsumi */
 		 || (id->model[0] == 'P' && id->model[1] == 'i'))/* Pioneer */
-			bswap ^= 1;	/* Vertos drives may still be weird */
+			/* Vertos drives may still be weird */
+			bswap ^= 1;	
 	}
-	ide_fixstring (id->model,     sizeof(id->model),     bswap);
-	ide_fixstring (id->fw_rev,    sizeof(id->fw_rev),    bswap);
-	ide_fixstring (id->serial_no, sizeof(id->serial_no), bswap);
+	ide_fixstring(id->model,     sizeof(id->model),     bswap);
+	ide_fixstring(id->fw_rev,    sizeof(id->fw_rev),    bswap);
+	ide_fixstring(id->serial_no, sizeof(id->serial_no), bswap);
 
 	if (strstr(id->model, "E X A B Y T E N E S T"))
 		goto err_misc;
 
-	id->model[sizeof(id->model)-1] = '\0';	/* we depend on this a lot! */
+	/* we depend on this a lot! */
+	id->model[sizeof(id->model)-1] = '\0';
 	printk("%s: %s, ", drive->name, id->model);
 	drive->present = 1;
 
@@ -122,7 +147,7 @@ static inline void do_identify (ide_drive_t *drive, byte cmd)
 	 * Check for an ATAPI device
 	 */
 	if (cmd == WIN_PIDENTIFY) {
-		byte type = (id->config >> 8) & 0x1f;
+		u8 type = (id->config >> 8) & 0x1f;
 		printk("ATAPI ");
 #ifdef CONFIG_BLK_DEV_PDC4030
 		if (hwif->channel == 1 && hwif->chipset == ide_pdc4030) {
@@ -142,7 +167,8 @@ static inline void do_identify (ide_drive_t *drive, byte cmd)
 						break;
 					}
 				}
-				type = ide_cdrom;	/* Early cdrom models used zero */
+				/* Early cdrom models used zero */
+				type = ide_cdrom;
 			case ide_cdrom:
 				drive->removable = 1;
 #ifdef CONFIG_PPC
@@ -182,16 +208,18 @@ static inline void do_identify (ide_drive_t *drive, byte cmd)
 	 * slave drive if the hwif is actually a flash memory card of
 	 * some variety:
 	 */
+	drive->is_flash = 0;
 	if (drive_is_flashcard(drive)) {
 		ide_drive_t *mate = &hwif->drives[1^drive->select.b.unit];
 		if (!mate->ata_flash) {
 			mate->present = 0;
 			mate->noprobe = 1;
 		}
+		drive->is_flash = 1;
 	}
 	drive->media = ide_disk;
-	printk("ATA DISK drive\n");
-	QUIRK_LIST(hwif, drive);
+	printk("%s DISK drive\n", (drive->is_flash) ? "CFA" : "ATA" );
+	QUIRK_LIST(drive);
 	return;
 
 err_misc:
@@ -211,68 +239,80 @@ static inline void do_identify (ide_drive_t *drive, byte cmd)
  *		1  device timed-out (no response to identify request)
  *		2  device aborted the command (refused to identify itself)
  */
-static int actual_try_to_identify (ide_drive_t *drive, byte cmd)
+static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
 {
-//	ide_hwif_t *hwif = HWIF(drive);
+	ide_hwif_t *hwif = HWIF(drive);
 	int rc;
 	ide_ioreg_t hd_status;
 	unsigned long timeout;
-	byte s, a;
+	u8 s = 0, a = 0;
 
 	if (IDE_CONTROL_REG) {
 		/* take a deep breath */
 		ide_delay_50ms();
-		a = IN_BYTE(IDE_ALTSTATUS_REG);
-		s = IN_BYTE(IDE_STATUS_REG);
+		a = hwif->INB(IDE_ALTSTATUS_REG);
+		s = hwif->INB(IDE_STATUS_REG);
 		if ((a ^ s) & ~INDEX_STAT) {
-			printk("%s: probing with STATUS(0x%02x) instead of ALTSTATUS(0x%02x)\n", drive->name, s, a);
-			hd_status = IDE_STATUS_REG;	/* ancient Seagate drives, broken interfaces */
+			printk("%s: probing with STATUS(0x%02x) instead of "
+				"ALTSTATUS(0x%02x)\n", drive->name, s, a);
+			/* ancient Seagate drives, broken interfaces */
+			hd_status = IDE_STATUS_REG;
 		} else {
-			hd_status = IDE_ALTSTATUS_REG;	/* use non-intrusive polling */
+			/* use non-intrusive polling */
+			hd_status = IDE_ALTSTATUS_REG;
 		}
 	} else {
 		ide_delay_50ms();
 		hd_status = IDE_STATUS_REG;
 	}
 
-	/* set features register for atapi identify command to be sure of reply */
+	/* set features register for atapi
+	 * identify command to be sure of reply
+	 */
 	if ((cmd == WIN_PIDENTIFY))
-		OUT_BYTE(0,IDE_FEATURE_REG);	/* disable dma & overlap */
+		/* disable dma & overlap */
+		hwif->OUTB(0, IDE_FEATURE_REG);
 
-#if CONFIG_BLK_DEV_PDC4030
-	if (HWIF(drive)->chipset == ide_pdc4030) {
-		/* DC4030 hosted drives need their own identify... */
-		extern int pdc4030_identify(ide_drive_t *);
-		if (pdc4030_identify(drive)) {
+	if (hwif->identify != NULL) {
+		if (hwif->identify(drive))
 			return 1;
-		}
-	} else
-#endif /* CONFIG_BLK_DEV_PDC4030 */
-		OUT_BYTE(cmd,IDE_COMMAND_REG);		/* ask drive for ID */
+	} else {
+		/* ask drive for ID */
+		hwif->OUTB(cmd, IDE_COMMAND_REG);
+	}
 	timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
 	timeout += jiffies;
 	do {
 		if (time_after(jiffies, timeout)) {
-			return 1;	/* drive timed-out */
+			/* drive timed-out */
+			return 1;
 		}
-		ide_delay_50ms();		/* give drive a breather */
-	} while (IN_BYTE(hd_status) & BUSY_STAT);
+		/* give drive a breather */
+		ide_delay_50ms();
+	} while ((hwif->INB(hd_status)) & BUSY_STAT);
 
-	ide_delay_50ms();		/* wait for IRQ and DRQ_STAT */
-	if (OK_STAT(GET_STAT(),DRQ_STAT,BAD_R_STAT)) {
+	/* wait for IRQ and DRQ_STAT */
+	ide_delay_50ms();
+	if (OK_STAT((hwif->INB(IDE_STATUS_REG)), DRQ_STAT, BAD_R_STAT)) {
 		unsigned long flags;
+
+		/* local CPU only; some systems need this */
 		local_irq_save(flags);
-			/* local CPU only; some systems need this */
-		do_identify(drive, cmd); /* drive returned ID */
-		rc = 0;			/* drive responded with ID */
-		(void) GET_STAT();	/* clear drive IRQ */
+		/* drive returned ID */
+		do_identify(drive, cmd);
+		/* drive responded with ID */
+		rc = 0;
+		/* clear drive IRQ */
+		(void) hwif->INB(IDE_STATUS_REG);
 		local_irq_restore(flags);
-	} else
-		rc = 2;			/* drive refused ID */
+	} else {
+		/* drive refused ID */
+		rc = 2;
+	}
 	return rc;
 }
 
-static int try_to_identify (ide_drive_t *drive, byte cmd)
+static int try_to_identify (ide_drive_t *drive, u8 cmd)
 {
 	ide_hwif_t *hwif = HWIF(drive);
 	int retval;
@@ -282,26 +322,34 @@ static int try_to_identify (ide_drive_t *drive, byte cmd)
 	if (IDE_CONTROL_REG && !hwif->irq) {
 		autoprobe = 1;
 		cookie = probe_irq_on();
-		OUT_BYTE(drive->ctl,IDE_CONTROL_REG);	/* enable device irq */
+		/* enable device irq */
+		hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
 	}
 
 	retval = actual_try_to_identify(drive, cmd);
 
 	if (autoprobe) {
 		int irq;
-		OUT_BYTE(drive->ctl|2,IDE_CONTROL_REG);	/* mask device irq */
-		(void) GET_STAT();			/* clear drive IRQ */
+		/* mask device irq */
+		hwif->OUTB(drive->ctl|2, IDE_CONTROL_REG);
+		/* clear drive IRQ */
+		(void) hwif->INB(IDE_STATUS_REG);
 		udelay(5);
 		irq = probe_irq_off(cookie);
 		if (!hwif->irq) {
 			if (irq > 0) {
 				hwif->irq = irq;
-			} else {	/* Mmmm.. multiple IRQs.. don't know which was ours */
-				printk("%s: IRQ probe failed (0x%lx)\n", drive->name, cookie);
+			} else {
+				/* Mmmm.. multiple IRQs..
+				 * don't know which was ours
+				 */
+				printk("%s: IRQ probe failed (0x%lx)\n",
+					drive->name, cookie);
 #ifdef CONFIG_BLK_DEV_CMD640
 #ifdef CMD640_DUMP_REGS
 				if (hwif->chipset == ide_cmd640) {
-					printk("%s: Hmmm.. probably a driver problem.\n", drive->name);
+					printk("%s: Hmmm.. probably a driver "
+						"problem.\n", drive->name);
 					CMD640_DUMP_REGS;
 				}
 #endif /* CMD640_DUMP_REGS */
@@ -329,11 +377,13 @@ static int try_to_identify (ide_drive_t *drive, byte cmd)
  *		3  bad status from device (possible for ATAPI drives)
  *		4  probe was not attempted because failure was obvious
  */
-static int do_probe (ide_drive_t *drive, byte cmd)
+static int do_probe (ide_drive_t *drive, u8 cmd)
 {
 	int rc;
 	ide_hwif_t *hwif = HWIF(drive);
-	if (drive->present) {	/* avoid waiting for inappropriate probes */
+
+	if (drive->present) {
+		/* avoid waiting for inappropriate probes */
 		if ((drive->media != ide_disk) && (cmd == WIN_IDENTIFY))
 			return 4;
 	}
@@ -342,43 +392,64 @@ static int do_probe (ide_drive_t *drive, byte cmd)
 		drive->name, drive->present, drive->media,
 		(cmd == WIN_IDENTIFY) ? "ATA" : "ATAPI");
 #endif
-	ide_delay_50ms();	/* needed for some systems (e.g. crw9624 as drive0 with disk as slave) */
-	SELECT_DRIVE(hwif,drive);
+
+	/* needed for some systems
+	 * (e.g. crw9624 as drive0 with disk as slave)
+	 */
 	ide_delay_50ms();
-	if (IN_BYTE(IDE_SELECT_REG) != drive->select.all && !drive->present) {
+	SELECT_DRIVE(drive);
+	ide_delay_50ms();
+	if (hwif->INB(IDE_SELECT_REG) != drive->select.all && !drive->present) {
 		if (drive->select.b.unit != 0) {
-			SELECT_DRIVE(hwif,&hwif->drives[0]);	/* exit with drive0 selected */
-			ide_delay_50ms();		/* allow BUSY_STAT to assert & clear */
+			/* exit with drive0 selected */
+			SELECT_DRIVE(&hwif->drives[0]);
+			/* allow BUSY_STAT to assert & clear */
+			ide_delay_50ms();
 		}
-		return 3;    /* no i/f present: mmm.. this should be a 4 -ml */
+		/* no i/f present: mmm.. this should be a 4 -ml */
+		return 3;
 	}
 
-	if (OK_STAT(GET_STAT(),READY_STAT,BUSY_STAT) ||
+	if (OK_STAT((hwif->INB(IDE_STATUS_REG)), READY_STAT, BUSY_STAT) ||
 	    drive->present || cmd == WIN_PIDENTIFY) {
-		if ((rc = try_to_identify(drive,cmd)))   /* send cmd and wait */
-			rc = try_to_identify(drive,cmd); /* failed: try again */
+		/* send cmd and wait */
+		if ((rc = try_to_identify(drive, cmd))) {
+			/* failed: try again */
+			rc = try_to_identify(drive,cmd);
+		}
+		if (hwif->INB(IDE_STATUS_REG) == (BUSY_STAT|READY_STAT))
+			return 4;
+
 		if (rc == 1 && cmd == WIN_PIDENTIFY && drive->autotune != 2) {
 			unsigned long timeout;
-			printk("%s: no response (status = 0x%02x), resetting drive\n", drive->name, GET_STAT());
+			printk("%s: no response (status = 0x%02x), "
+				"resetting drive\n", drive->name,
+				hwif->INB(IDE_STATUS_REG));
 			ide_delay_50ms();
-			OUT_BYTE (drive->select.all, IDE_SELECT_REG);
+			hwif->OUTB(drive->select.all, IDE_SELECT_REG);
 			ide_delay_50ms();
-			OUT_BYTE(WIN_SRST, IDE_COMMAND_REG);
+			hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
 			timeout = jiffies;
-			while ((GET_STAT() & BUSY_STAT) && time_before(jiffies, timeout + WAIT_WORSTCASE))
+			while (((hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) &&
+			       time_before(jiffies, timeout + WAIT_WORSTCASE))
 				ide_delay_50ms();
 			rc = try_to_identify(drive, cmd);
 		}
 		if (rc == 1)
-			printk("%s: no response (status = 0x%02x)\n", drive->name, GET_STAT());
-		(void) GET_STAT();		/* ensure drive irq is clear */
+			printk("%s: no response (status = 0x%02x)\n",
+				drive->name, hwif->INB(IDE_STATUS_REG));
+		/* ensure drive irq is clear */
+		(void) hwif->INB(IDE_STATUS_REG);
 	} else {
-		rc = 3;				/* not present or maybe ATAPI */
+		/* not present or maybe ATAPI */
+		rc = 3;
 	}
 	if (drive->select.b.unit != 0) {
-		SELECT_DRIVE(hwif,&hwif->drives[0]);	/* exit with drive0 selected */
+		/* exit with drive0 selected */
+		SELECT_DRIVE(&hwif->drives[0]);
 		ide_delay_50ms();
-		(void) GET_STAT();		/* ensure drive irq is clear */
+		/* ensure drive irq is clear */
+		(void) hwif->INB(IDE_STATUS_REG);
 	}
 	return rc;
 }
@@ -392,9 +463,9 @@ static void enable_nest (ide_drive_t *drive)
 	unsigned long timeout;
 
 	printk("%s: enabling %s -- ", hwif->name, drive->id->model);
-	SELECT_DRIVE(hwif, drive);
+	SELECT_DRIVE(drive);
 	ide_delay_50ms();
-	OUT_BYTE(EXABYTE_ENABLE_NEST, IDE_COMMAND_REG);
+	hwif->OUTB(EXABYTE_ENABLE_NEST, IDE_COMMAND_REG);
 	timeout = jiffies + WAIT_WORSTCASE;
 	do {
 		if (time_after(jiffies, timeout)) {
@@ -402,15 +473,21 @@ static void enable_nest (ide_drive_t *drive)
 			return;
 		}
 		ide_delay_50ms();
-	} while (GET_STAT() & BUSY_STAT);
+	} while ((hwif->INB(IDE_STATUS_REG)) & BUSY_STAT);
+
 	ide_delay_50ms();
-	if (!OK_STAT(GET_STAT(), 0, BAD_STAT))
-		printk("failed (status = 0x%02x)\n", GET_STAT());
-	else
+
+	if (!OK_STAT((hwif->INB(IDE_STATUS_REG)), 0, BAD_STAT)) {
+		printk("failed (status = 0x%02x)\n", hwif->INB(IDE_STATUS_REG));
+	} else {
 		printk("success\n");
+	}
 
-	if (do_probe(drive, WIN_IDENTIFY) >= 2)	/* if !(success||timed-out) */
-		(void) do_probe(drive, WIN_PIDENTIFY);	/* look for ATAPI device */
+	/* if !(success||timed-out) */
+	if (do_probe(drive, WIN_IDENTIFY) >= 2) {
+		/* look for ATAPI device */
+		(void) do_probe(drive, WIN_PIDENTIFY);
+	}
 }
 
 /*
@@ -419,102 +496,99 @@ static void enable_nest (ide_drive_t *drive)
  * Returns:	0  no device was found
  *		1  device was found (note: drive->present might still be 0)
  */
-static inline byte probe_for_drive (ide_drive_t *drive)
+static inline u8 probe_for_drive (ide_drive_t *drive)
 {
-	if (drive->noprobe)			/* skip probing? */
+	/* skip probing? */
+	if (drive->noprobe)
 		return drive->present;
-	if (do_probe(drive, WIN_IDENTIFY) >= 2) { /* if !(success||timed-out) */
-		(void) do_probe(drive, WIN_PIDENTIFY); /* look for ATAPI device */
+
+	/* if !(success||timed-out) */
+	if (do_probe(drive, WIN_IDENTIFY) >= 2) {
+		/* look for ATAPI device */
+		(void) do_probe(drive, WIN_PIDENTIFY);
 	}
 	if (drive->id && strstr(drive->id->model, "E X A B Y T E N E S T"))
 		enable_nest(drive);
 	if (!drive->present)
-		return 0;			/* drive not found */
-	if (drive->id == NULL) {		/* identification failed? */
+		/* drive not found */
+		return 0;
+
+	/* identification failed? */
+	if (drive->id == NULL) {
 		if (drive->media == ide_disk) {
-			printk ("%s: non-IDE drive, CHS=%d/%d/%d\n",
-			 drive->name, drive->cyl, drive->head, drive->sect);
+			printk("%s: non-IDE drive, CHS=%d/%d/%d\n",
+				drive->name, drive->cyl,
+				drive->head, drive->sect);
 		} else if (drive->media == ide_cdrom) {
 			printk("%s: ATAPI cdrom (?)\n", drive->name);
 		} else {
-			drive->present = 0;	/* nuke it */
+			/* nuke it */
+			drive->present = 0;
 		}
 	}
-	return 1;	/* drive was found */
+	/* drive was found */
+	return 1;
 }
 
-/*
- * Calculate the region that this interface occupies,
- * handling interfaces where the registers may not be
- * ordered sanely.  We deal with the CONTROL register
- * separately.
- */
+#define hwif_check_region(addr, num) \
+	((hwif->mmio) ? check_mem_region((addr),(num)) : check_region((addr),(num)))
+
 static int hwif_check_regions (ide_hwif_t *hwif)
 {
-	int region_errors = 0;
-
-	hwif->straight8 = 0;
-	region_errors  = ide_check_region(hwif->io_ports[IDE_DATA_OFFSET], 1);
-	region_errors += ide_check_region(hwif->io_ports[IDE_ERROR_OFFSET], 1);
-	region_errors += ide_check_region(hwif->io_ports[IDE_NSECTOR_OFFSET], 1);
-	region_errors += ide_check_region(hwif->io_ports[IDE_SECTOR_OFFSET], 1);
-	region_errors += ide_check_region(hwif->io_ports[IDE_LCYL_OFFSET], 1);
-	region_errors += ide_check_region(hwif->io_ports[IDE_HCYL_OFFSET], 1);
-	region_errors += ide_check_region(hwif->io_ports[IDE_SELECT_OFFSET], 1);
-	region_errors += ide_check_region(hwif->io_ports[IDE_STATUS_OFFSET], 1);
+	u32 i		= 0;
+	int addr_errs	= 0;
 
+	if (hwif->mmio == 2)
+		return 0;
+	addr_errs  = hwif_check_region(hwif->io_ports[IDE_DATA_OFFSET], 1);
+	for (i = IDE_ERROR_OFFSET; i <= IDE_STATUS_OFFSET; i++)
+		addr_errs += hwif_check_region(hwif->io_ports[i], 1);
 	if (hwif->io_ports[IDE_CONTROL_OFFSET])
-		region_errors += ide_check_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
+		addr_errs += hwif_check_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
 	if (hwif->io_ports[IDE_IRQ_OFFSET])
-		region_errors += ide_check_region(hwif->io_ports[IDE_IRQ_OFFSET], 1);
+		addr_errs += hwif_check_region(hwif->io_ports[IDE_IRQ_OFFSET], 1);
 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
-	/*
-	 * If any errors are return, we drop the hwif interface.
-	 */
-	return(region_errors);
+	/* If any errors are return, we drop the hwif interface. */
+	hwif->straight8 = 0;
+	return(addr_errs);
 }
 
+//EXPORT_SYMBOL(hwif_check_regions);
+
+#define hwif_request_region(addr, num, name)	\
+	((hwif->mmio) ? request_mem_region((addr),(num),(name)) : request_region((addr),(num),(name)))
+
 static void hwif_register (ide_hwif_t *hwif)
 {
-	if (((unsigned long)hwif->io_ports[IDE_DATA_OFFSET] | 7) ==
-	    ((unsigned long)hwif->io_ports[IDE_STATUS_OFFSET])) {
-		ide_request_region(hwif->io_ports[IDE_DATA_OFFSET], 8, hwif->name);
-		hwif->straight8 = 1;
-		goto jump_straight8;
-	}
-
-	if (hwif->io_ports[IDE_DATA_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_DATA_OFFSET], 1, hwif->name);
-	if (hwif->io_ports[IDE_ERROR_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_ERROR_OFFSET], 1, hwif->name);
-	if (hwif->io_ports[IDE_NSECTOR_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_NSECTOR_OFFSET], 1, hwif->name);
-	if (hwif->io_ports[IDE_SECTOR_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_SECTOR_OFFSET], 1, hwif->name);
-	if (hwif->io_ports[IDE_LCYL_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_LCYL_OFFSET], 1, hwif->name);
-	if (hwif->io_ports[IDE_HCYL_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_HCYL_OFFSET], 1, hwif->name);
-	if (hwif->io_ports[IDE_SELECT_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_SELECT_OFFSET], 1, hwif->name);
-	if (hwif->io_ports[IDE_STATUS_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_STATUS_OFFSET], 1, hwif->name);
-
-jump_straight8:
+	u32 i = 0;
+
+	if (hwif->mmio == 2)
+		return;
 	if (hwif->io_ports[IDE_CONTROL_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1, hwif->name);
+		hwif_request_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1, hwif->name);
 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
 	if (hwif->io_ports[IDE_IRQ_OFFSET])
-		ide_request_region(hwif->io_ports[IDE_IRQ_OFFSET], 1, hwif->name);
+		hwif_request_region(hwif->io_ports[IDE_IRQ_OFFSET], 1, hwif->name);
 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
+	if (((unsigned long)hwif->io_ports[IDE_DATA_OFFSET] | 7) ==
+	    ((unsigned long)hwif->io_ports[IDE_STATUS_OFFSET])) {
+		hwif_request_region(hwif->io_ports[IDE_DATA_OFFSET], 8, hwif->name);
+		hwif->straight8 = 1;
+		return;
+	}
+
+	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
+		hwif_request_region(hwif->io_ports[i], 1, hwif->name);
 }
 
+//EXPORT_SYMBOL(hwif_register);
+
 /*
  * This routine only knows how to look for drive units 0 and 1
  * on an interface, so any setting of MAX_DRIVES > 2 won't work here.
  */
-static void probe_hwif (ide_hwif_t *hwif)
+void probe_hwif (ide_hwif_t *hwif)
 {
 	unsigned int unit;
 	unsigned long flags;
@@ -524,8 +598,7 @@ static void probe_hwif (ide_hwif_t *hwif)
 #ifdef CONFIG_BLK_DEV_IDE
 	if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) {
 		extern void probe_cmos_for_drives(ide_hwif_t *);
-
-		probe_cmos_for_drives (hwif);
+		probe_cmos_for_drives(hwif);
 	}
 #endif
 
@@ -534,20 +607,25 @@ static void probe_hwif (ide_hwif_t *hwif)
 	    (hwif->chipset != ide_pdc4030 || hwif->channel == 0) &&
 #endif /* CONFIG_BLK_DEV_PDC4030 */
 	    (hwif_check_regions(hwif))) {
-		int msgout = 0;
+		u16 msgout = 0;
 		for (unit = 0; unit < MAX_DRIVES; ++unit) {
 			ide_drive_t *drive = &hwif->drives[unit];
 			if (drive->present) {
 				drive->present = 0;
-				printk("%s: ERROR, PORTS ALREADY IN USE\n", drive->name);
+				printk("%s: ERROR, PORTS ALREADY IN USE\n",
+					drive->name);
 				msgout = 1;
 			}
 		}
 		if (!msgout)
-			printk("%s: ports already in use, skipping probe\n", hwif->name);
+			printk("%s: ports already in use, skipping probe\n",
+				hwif->name);
 		return;	
 	}
 
+	if (hwif->hw.ack_intr && hwif->irq)
+		disable_irq(hwif->irq);
+
 	local_irq_set(flags);
 	/*
 	 * Second drive should only exist if first drive was found,
@@ -556,7 +634,8 @@ static void probe_hwif (ide_hwif_t *hwif)
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
 		ide_drive_t *drive = &hwif->drives[unit];
 		drive->dn = ((hwif->channel ? 2 : 0) + unit);
-		(void) probe_for_drive (drive);
+		hwif->drives[unit].dn = ((hwif->channel ? 2 : 0) + unit);
+		(void) probe_for_drive(drive);
 		if (drive->present && !hwif->present) {
 			hwif->present = 1;
 			if (hwif->chipset != ide_4drives ||
@@ -567,40 +646,76 @@ static void probe_hwif (ide_hwif_t *hwif)
 	}
 	if (hwif->io_ports[IDE_CONTROL_OFFSET] && hwif->reset) {
 		unsigned long timeout = jiffies + WAIT_WORSTCASE;
-		byte stat;
+		u8 stat;
 
 		printk("%s: reset\n", hwif->name);
-		OUT_BYTE(12, hwif->io_ports[IDE_CONTROL_OFFSET]);
+		hwif->OUTB(12, hwif->io_ports[IDE_CONTROL_OFFSET]);
 		udelay(10);
-		OUT_BYTE(8, hwif->io_ports[IDE_CONTROL_OFFSET]);
+		hwif->OUTB(8, hwif->io_ports[IDE_CONTROL_OFFSET]);
 		do {
 			ide_delay_50ms();
-			stat = IN_BYTE(hwif->io_ports[IDE_STATUS_OFFSET]);
+			stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
 		} while ((stat & BUSY_STAT) && time_after(timeout, jiffies));
 
 	}
 	local_irq_restore(flags);
+	if (hwif->hw.ack_intr && hwif->irq)
+		enable_irq(hwif->irq);
+
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
 		ide_drive_t *drive = &hwif->drives[unit];
 		if (drive->present) {
 			if (hwif->tuneproc != NULL && drive->autotune == 1)
 				/* auto-tune PIO mode */
 				hwif->tuneproc(drive, 255);
-
-			if ((drive->autotune != 2) && hwif->dmaproc != NULL) {
+			/*
+			 * MAJOR HACK BARF :-/
+			 *
+			 * FIXME: chipsets own this cruft!
+			 */
+			/*
+			 * Move here to prevent module loading clashing.
+			 */
+	//		drive->autodma = hwif->autodma;
+			if ((drive->autotune != 2) && (hwif->ide_dma_check)) {
 				/*
 				 * Force DMAing for the beginning of the check.
 				 * Some chipsets appear to do interesting
 				 * things, if not checked and cleared.
 				 *   PARANOIA!!!
 				 */
-				hwif->dmaproc(ide_dma_off_quietly, drive);
-				hwif->dmaproc(ide_dma_check, drive);
+				hwif->ide_dma_off_quietly(drive);
+				hwif->ide_dma_check(drive);
 			}
 		}
 	}
 }
 
+EXPORT_SYMBOL(probe_hwif);
+
+int hwif_init (ide_hwif_t *hwif);
+int probe_hwif_init (ide_hwif_t *hwif)
+{
+	hwif->initializing = 1;
+	probe_hwif(hwif);
+	hwif_init(hwif);
+
+#if 1
+	if (hwif->present) {
+		u16 unit = 0;
+		for (unit = 0; unit < MAX_DRIVES; ++unit) {
+			ide_drive_t *drive = &hwif->drives[unit];
+			if (drive->present)
+				ata_attach(drive);
+		}
+	}
+#endif
+	hwif->initializing = 0;
+	return 0;
+}
+
+EXPORT_SYMBOL(probe_hwif_init);
+
 #if MAX_HWIFS > 1
 /*
  * save_match() is used to simplify logic in init_irq() below.
@@ -613,7 +728,7 @@ static void probe_hwif (ide_hwif_t *hwif)
  *
  * This routine detects and reports such situations, but does not fix them.
  */
-static void save_match (ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
+void save_match (ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
 {
 	ide_hwif_t *m = *match;
 
@@ -626,6 +741,7 @@ static void save_match (ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
 	if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */
 		*match = new;
 }
+EXPORT_SYMBOL(save_match);
 #endif /* MAX_HWIFS > 1 */
 
 /*
@@ -667,17 +783,20 @@ static void ide_init_queue(ide_drive_t *drive)
  * but anything else has led to problems on some machines.  We re-enable
  * interrupts as much as we can safely do in most places.
  */
-static int init_irq (ide_hwif_t *hwif)
+int init_irq (ide_hwif_t *hwif)
 {
 	unsigned long flags;
 	unsigned int index;
 	ide_hwgroup_t *hwgroup, *new_hwgroup;
 	ide_hwif_t *match = NULL;
 
-	
+#if 0
+	/* Allocate the buffer and no sleep allowed */
+	new_hwgroup = kmalloc(sizeof(ide_hwgroup_t),GFP_ATOMIC);
+#else
 	/* Allocate the buffer and potentially sleep first */
-	
 	new_hwgroup = kmalloc(sizeof(ide_hwgroup_t),GFP_KERNEL);
+#endif
 	
 	spin_lock_irqsave(&ide_lock, flags);
 
@@ -691,7 +810,8 @@ static int init_irq (ide_hwif_t *hwif)
 		if (h->hwgroup) {  /* scan only initialized hwif's */
 			if (hwif->irq == h->irq) {
 				hwif->sharing_irq = h->sharing_irq = 1;
-				if (hwif->chipset != ide_pci || h->chipset != ide_pci) {
+				if (hwif->chipset != ide_pci ||
+				    h->chipset != ide_pci) {
 					save_match(hwif, h, &match);
 				}
 			}
@@ -734,16 +854,23 @@ static int init_irq (ide_hwif_t *hwif)
 	 * Allocate the irq, if not already obtained for another hwif
 	 */
 	if (!match || match->irq != hwif->irq) {
-#ifdef CONFIG_IDEPCI_SHARE_IRQ
-		int sa = IDE_CHIPSET_IS_PCI(hwif->chipset) ? SA_SHIRQ : SA_INTERRUPT;
-#else /* !CONFIG_IDEPCI_SHARE_IRQ */
-		int sa = IDE_CHIPSET_IS_PCI(hwif->chipset) ? SA_INTERRUPT|SA_SHIRQ : SA_INTERRUPT;
+		int sa = SA_INTERRUPT;
+#if defined(__mc68000__) || defined(CONFIG_APUS)
+		sa = SA_SHIRQ;
+#endif /* __mc68000__ || CONFIG_APUS */
+
+		if (IDE_CHIPSET_IS_PCI(hwif->chipset)) {
+			sa = SA_SHIRQ;
+#ifndef CONFIG_IDEPCI_SHARE_IRQ
+			sa |= SA_INTERRUPT;
 #endif /* CONFIG_IDEPCI_SHARE_IRQ */
+		}
 
 		if (hwif->io_ports[IDE_CONTROL_OFFSET])
-			OUT_BYTE(0x08, hwif->io_ports[IDE_CONTROL_OFFSET]); /* clear nIEN */
+			/* clear nIEN */
+			hwif->OUTB(0x08, hwif->io_ports[IDE_CONTROL_OFFSET]);
 
-		if (ide_request_irq(hwif->irq, &ide_intr, sa, hwif->name, hwgroup)) {
+		if (request_irq(hwif->irq,&ide_intr,sa,hwif->name,hwgroup)) {
 			if (!match)
 				kfree(hwgroup);
 			spin_unlock_irqrestore(&ide_lock, flags);
@@ -774,11 +901,12 @@ static int init_irq (ide_hwif_t *hwif)
 		printk("%s : Adding missed hwif to hwgroup!!\n", hwif->name);
 #endif
 	}
+
+	/* all CPUs; safe now that hwif->hwgroup is set up */
 	spin_unlock_irqrestore(&ide_lock, flags);
-		/* all CPUs; safe now that hwif->hwgroup is set up */
 
 #if !defined(__mc68000__) && !defined(CONFIG_APUS) && !defined(__sparc__)
-	printk("%s at 0x%03x-0x%03x,0x%03x on irq %d", hwif->name,
+	printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name,
 		hwif->io_ports[IDE_DATA_OFFSET],
 		hwif->io_ports[IDE_DATA_OFFSET]+7,
 		hwif->io_ports[IDE_CONTROL_OFFSET], hwif->irq);
@@ -788,7 +916,7 @@ static int init_irq (ide_hwif_t *hwif)
 		hwif->io_ports[IDE_DATA_OFFSET]+7,
 		hwif->io_ports[IDE_CONTROL_OFFSET], __irq_itoa(hwif->irq));
 #else
-	printk("%s at %p on irq 0x%08x", hwif->name,
+	printk("%s at %x on irq 0x%08x", hwif->name,
 		hwif->io_ports[IDE_DATA_OFFSET], hwif->irq);
 #endif /* __mc68000__ && CONFIG_APUS */
 	if (match)
@@ -798,6 +926,8 @@ static int init_irq (ide_hwif_t *hwif)
 	return 0;
 }
 
+EXPORT_SYMBOL(init_irq);
+
 /*
  * init_gendisk() (as opposed to ide_geninit) is called for each major device,
  * after probing for drives, to allocate partition tables and other data
@@ -811,15 +941,7 @@ static void init_gendisk (ide_hwif_t *hwif)
 	extern devfs_handle_t ide_devfs_handle;
 	char *names;
 
-#if 1
 	units = MAX_DRIVES;
-#else
-	/* figure out maximum drive number on the interface */
-	for (units = MAX_DRIVES; units > 0; --units) {
-		if (hwif->drives[units-1].present)
-			break;
-	}
-#endif
 
 	minors    = units * (1<<PARTN_BITS);
 	gd        = kmalloc(MAX_DRIVES * sizeof(struct gendisk), GFP_KERNEL);
@@ -827,7 +949,7 @@ static void init_gendisk (ide_hwif_t *hwif)
 		goto err_kmalloc_gd;
 	memset(gd, 0, MAX_DRIVES * sizeof(struct gendisk));
 
-	names = kmalloc (4 * MAX_DRIVES, GFP_KERNEL);
+	names = kmalloc(4 * MAX_DRIVES, GFP_KERNEL);
 	if (!names)
 		goto err_kmalloc_gd_names;
 	memset(names, 0, 4 * MAX_DRIVES);
@@ -843,7 +965,6 @@ static void init_gendisk (ide_hwif_t *hwif)
 	}
 
 	for (unit = 0; unit < units; ++unit) {
-#if 1
 		char name[64];
 		ide_add_generic_settings(hwif->drives + unit);
 		sprintf (name, "host%d/bus%d/target%d/lun%d",
@@ -852,18 +973,6 @@ static void init_gendisk (ide_hwif_t *hwif)
 			hwif->channel, unit, hwif->drives[unit].lun);
 		if (hwif->drives[unit].present)
 			hwif->drives[unit].de = devfs_mk_dir(ide_devfs_handle, name, NULL);
-#else
-		if (hwif->drives[unit].present) {
-			char name[64];
-
-			ide_add_generic_settings(hwif->drives + unit);
-			sprintf (name, "host%d/bus%d/target%d/lun%d",
-				 (hwif->channel && hwif->mate) ? hwif->mate->index : hwif->index,
-				 hwif->channel, unit, hwif->drives[unit].lun);
-			hwif->drives[unit].de =
-				devfs_mk_dir (ide_devfs_handle, name, NULL);
-		}
-#endif
 	}
 	return;
 
@@ -873,7 +982,9 @@ static void init_gendisk (ide_hwif_t *hwif)
 	printk(KERN_WARNING "(ide::init_gendisk) Out of memory\n");
 }
 
-static int hwif_init (ide_hwif_t *hwif)
+EXPORT_SYMBOL(init_gendisk);
+
+int hwif_init (ide_hwif_t *hwif)
 {
 	if (!hwif->present)
 		return 0;
@@ -891,8 +1002,9 @@ static int hwif_init (ide_hwif_t *hwif)
 		return (hwif->present = 0);
 	}
 #endif /* CONFIG_BLK_DEV_HD */
-	
-	hwif->present = 0; /* we set it back to 1 if all is ok below */
+
+	/* we set it back to 1 if all is ok below */	
+	hwif->present = 0;
 
 	if (register_blkdev (hwif->major, hwif->name, ide_fops)) {
 		printk("%s: UNABLE TO GET MAJOR NUMBER %d\n",
@@ -909,13 +1021,13 @@ static int hwif_init (ide_hwif_t *hwif)
 		if (!(hwif->irq = ide_default_irq(hwif->io_ports[IDE_DATA_OFFSET]))) {
 			printk("%s: Disabled unable to get IRQ %d.\n",
 				hwif->name, i);
-			(void) unregister_blkdev (hwif->major, hwif->name);
+			(void) unregister_blkdev(hwif->major, hwif->name);
 			return (hwif->present = 0);
 		}
 		if (init_irq(hwif)) {
 			printk("%s: probed IRQ %d and default IRQ %d failed.\n",
 				hwif->name, i, hwif->irq);
-			(void) unregister_blkdev (hwif->major, hwif->name);
+			(void) unregister_blkdev(hwif->major, hwif->name);
 			return (hwif->present = 0);
 		}
 		printk("%s: probed IRQ %d failed, using default.\n",
@@ -926,28 +1038,23 @@ static int hwif_init (ide_hwif_t *hwif)
 	blk_dev[hwif->major].data = hwif;
 	blk_dev[hwif->major].queue = ide_get_queue;
 	hwif->present = 1;	/* success */
-
-#if (DEBUG_SPINLOCK > 0)
-{
-	static int done = 0;
-	if (!done++)
-		printk("ide_lock is %p\n", &ide_lock);    /* FIXME */
-}
-#endif
-	return hwif->present;
+	return 1;
 }
 
+EXPORT_SYMBOL(hwif_init);
+
 void export_ide_init_queue (ide_drive_t *drive)
 {
 	ide_init_queue(drive);
 }
 
-byte export_probe_for_drive (ide_drive_t *drive)
+EXPORT_SYMBOL(export_ide_init_queue);
+
+u8 export_probe_for_drive (ide_drive_t *drive)
 {
 	return probe_for_drive(drive);
 }
 
-EXPORT_SYMBOL(export_ide_init_queue);
 EXPORT_SYMBOL(export_probe_for_drive);
 
 int ideprobe_init (void);
@@ -961,7 +1068,7 @@ int ideprobe_init (void)
 {
 	unsigned int index;
 	int probe[MAX_HWIFS];
-	
+
 	MOD_INC_USE_COUNT;
 	memset(probe, 0, MAX_HWIFS * sizeof(int));
 	for (index = 0; index < MAX_HWIFS; ++index)
@@ -976,7 +1083,7 @@ int ideprobe_init (void)
 	for (index = 0; index < MAX_HWIFS; ++index)
 		if (probe[index])
 			hwif_init(&ide_hwifs[index]);
-	for (index = 0; index < MAX_HWIFS; ++index)
+	for (index = 0; index < MAX_HWIFS; ++index) {
 		if (probe[index]) {
 			ide_hwif_t *hwif = &ide_hwifs[index];
 			int unit;
@@ -985,6 +1092,7 @@ int ideprobe_init (void)
 			for (unit = 0; unit < MAX_DRIVES; ++unit)
 				ata_attach(&hwif->drives[unit]);
 		}
+	}
 	if (!ide_probe)
 		ide_probe = &ideprobe_module;
 	MOD_DEC_USE_COUNT;