Merge ../linux-2.6 by hand

5 files changed, 1348 insertions, 28 deletions

diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 1cadd2c3cad..a737886e39d 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -778,6 +778,35 @@ config BLK_DEV_IDE_PMAC_BLINK
 	  This option enables the use of the sleep LED as a hard drive
 	  activity LED.
 
+config BLK_DEV_IDE_AU1XXX
+       bool "IDE for AMD Alchemy Au1200"
+       depends on SOC_AU1200
+choice
+       prompt "IDE Mode for AMD Alchemy Au1200"
+       default CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
+       depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
+
+config BLK_DEV_IDE_AU1XXX_PIO_DBDMA
+       bool "PIO+DbDMA IDE for AMD Alchemy Au1200"
+
+config BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+       bool "MDMA2+DbDMA IDE for AMD Alchemy Au1200"
+       depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
+endchoice
+
+config BLK_DEV_IDE_AU1XXX_BURSTABLE_ON
+        bool "Enable burstable Mode on DbDMA"
+        default false
+        depends BLK_DEV_IDE_AU1XXX
+        help
+          This option enable the burstable Flag on DbDMA controller
+          (cf. "AMD Alchemy 'Au1200' Processor Data Book - PRELIMINARY").
+
+config BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
+       int "Maximum transfer size (KB) per request (up to 128)"
+       default "128"
+       depends BLK_DEV_IDE_AU1XXX
+
 config IDE_ARM
 	def_bool ARM && (ARCH_A5K || ARCH_CLPS7500 || ARCH_RPC || ARCH_SHARK)
 
@@ -1013,7 +1042,7 @@ config BLK_DEV_UMC8672
 endif
 
 config BLK_DEV_IDEDMA
-	def_bool BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS
+	def_bool BLK_DEV_IDEDMA_PCI || BLK_DEV_IDEDMA_PMAC || BLK_DEV_IDEDMA_ICS || BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
 
 config IDEDMA_IVB
 	bool "IGNORE word93 Validation BITS"
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 74af7e07486..8b9d8552659 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -2211,13 +2211,12 @@ static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense)
 
 	if (toc == NULL) {
 		/* Try to allocate space. */
-		toc = (struct atapi_toc *) kmalloc (sizeof (struct atapi_toc),
-						    GFP_KERNEL);
-		info->toc = toc;
+		toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
 		if (toc == NULL) {
 			printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name);
 			return -ENOMEM;
 		}
+		info->toc = toc;
 	}
 
 	/* Check to see if the existing data is still valid.
@@ -2240,7 +2239,8 @@ static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense)
 	/* First read just the header, so we know how long the TOC is. */
 	stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
 				    sizeof(struct atapi_toc_header), sense);
-	if (stat) return stat;
+	if (stat)
+		return stat;
 
 #if ! STANDARD_ATAPI
 	if (CDROM_CONFIG_FLAGS(drive)->toctracks_as_bcd) {
@@ -2324,7 +2324,8 @@ static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense)
 		/* Read the multisession information. */
 		stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
 					   sizeof(ms_tmp), sense);
-		if (stat) return stat;
+		if (stat)
+			return stat;
 
 		toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
 	} else {
@@ -2460,7 +2461,7 @@ static int ide_cdrom_packet(struct cdrom_device_info *cdi,
 			    struct packet_command *cgc)
 {
 	struct request req;
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 
 	if (cgc->timeout <= 0)
 		cgc->timeout = ATAPI_WAIT_PC;
@@ -2537,7 +2538,7 @@ int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi,
 			   unsigned int cmd, void *arg)
 			   
 {
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	struct cdrom_info *info = drive->driver_data;
 	int stat;
 
@@ -2548,7 +2549,7 @@ int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi,
 	 */
 	case CDROMPLAYTRKIND: {
 		unsigned long lba_start, lba_end;
-		struct cdrom_ti *ti = (struct cdrom_ti *)arg;
+		struct cdrom_ti *ti = arg;
 		struct atapi_toc_entry *first_toc, *last_toc;
 
 		stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc);
@@ -2571,12 +2572,13 @@ int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi,
 	}
 
 	case CDROMREADTOCHDR: {
-		struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg;
+		struct cdrom_tochdr *tochdr = arg;
 		struct atapi_toc *toc;
 
 		/* Make sure our saved TOC is valid. */
 		stat = cdrom_read_toc(drive, NULL);
-		if (stat) return stat;
+		if (stat)
+			return stat;
 
 		toc = info->toc;
 		tochdr->cdth_trk0 = toc->hdr.first_track;
@@ -2586,11 +2588,12 @@ int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi,
 	}
 
 	case CDROMREADTOCENTRY: {
-		struct cdrom_tocentry *tocentry = (struct cdrom_tocentry*) arg;
+		struct cdrom_tocentry *tocentry = arg;
 		struct atapi_toc_entry *toce;
 
 		stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce);
-		if (stat) return stat;
+		if (stat)
+			return stat;
 
 		tocentry->cdte_ctrl = toce->control;
 		tocentry->cdte_adr  = toce->adr;
@@ -2613,7 +2616,7 @@ int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi,
 static
 int ide_cdrom_reset (struct cdrom_device_info *cdi)
 {
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	struct request_sense sense;
 	struct request req;
 	int ret;
@@ -2636,12 +2639,13 @@ int ide_cdrom_reset (struct cdrom_device_info *cdi)
 static
 int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position)
 {
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	struct request_sense sense;
 
 	if (position) {
 		int stat = cdrom_lockdoor(drive, 0, &sense);
-		if (stat) return stat;
+		if (stat)
+			return stat;
 	}
 
 	return cdrom_eject(drive, !position, &sense);
@@ -2650,7 +2654,7 @@ int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position)
 static
 int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock)
 {
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	return cdrom_lockdoor(drive, lock, NULL);
 }
 
@@ -2700,7 +2704,7 @@ void ide_cdrom_update_speed (ide_drive_t *drive, struct atapi_capabilities_page
 static
 int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed)
 {
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	struct request_sense sense;
 	struct atapi_capabilities_page cap;
 	int stat;
@@ -2723,7 +2727,7 @@ int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed)
 static
 int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr)
 {
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	struct media_event_desc med;
 	struct request_sense sense;
 	int stat;
@@ -2769,7 +2773,7 @@ int ide_cdrom_get_last_session (struct cdrom_device_info *cdi,
 				struct cdrom_multisession *ms_info)
 {
 	struct atapi_toc *toc;
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	struct cdrom_info *info = drive->driver_data;
 	struct request_sense sense;
 	int ret;
@@ -2791,7 +2795,7 @@ int ide_cdrom_get_mcn (struct cdrom_device_info *cdi,
 {
 	int stat;
 	char mcnbuf[24];
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 
 /* get MCN */
 	if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL)))
@@ -2815,7 +2819,7 @@ static
 int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi,
 				       int slot_nr)
 {
-	ide_drive_t *drive = (ide_drive_t*) cdi->handle;
+	ide_drive_t *drive = cdi->handle;
 	int retval;
 	
 	if (slot_nr == CDSL_CURRENT) {
@@ -2886,7 +2890,7 @@ static int ide_cdrom_register (ide_drive_t *drive, int nslots)
 	devinfo->mask = 0;
 	devinfo->speed = CDROM_STATE_FLAGS(drive)->current_speed;
 	devinfo->capacity = nslots;
-	devinfo->handle = (void *) drive;
+	devinfo->handle = drive;
 	strcpy(devinfo->name, drive->name);
 	
 	/* set capability mask to match the probe. */
@@ -2942,7 +2946,7 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive)
 	 * registered with the Uniform layer yet, it can't do this.
 	 * Same goes for cdi->ops.
 	 */
-	cdi->handle = (ide_drive_t *) drive;
+	cdi->handle = drive;
 	cdi->ops = &ide_cdrom_dops;
 
 	if (ide_cdrom_get_capabilities(drive, &cap))
@@ -3254,6 +3258,7 @@ int ide_cdrom_setup (ide_drive_t *drive)
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 static
 sector_t ide_cdrom_capacity (ide_drive_t *drive)
 {
@@ -3264,6 +3269,7 @@ sector_t ide_cdrom_capacity (ide_drive_t *drive)
 
 	return capacity * sectors_per_frame;
 }
+#endif
 
 static int ide_cd_remove(struct device *dev)
 {
@@ -3309,7 +3315,7 @@ static int ide_cd_probe(struct device *);
 static int proc_idecd_read_capacity
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
 {
-	ide_drive_t*drive = (ide_drive_t *)data;
+	ide_drive_t *drive = data;
 	int len;
 
 	len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive));
@@ -3449,7 +3455,7 @@ static int ide_cd_probe(struct device *dev)
 		printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name);
 		goto failed;
 	}
-	info = (struct cdrom_info *) kmalloc (sizeof (struct cdrom_info), GFP_KERNEL);
+	info = kmalloc(sizeof(struct cdrom_info), GFP_KERNEL);
 	if (info == NULL) {
 		printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name);
 		goto failed;
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 4063d2c34e3..84665e2ba3c 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -64,6 +64,7 @@ static int proc_ide_read_imodel
 		case ide_cy82c693:	name = "cy82c693";	break;
 		case ide_4drives:	name = "4drives";	break;
 		case ide_pmac:		name = "mac-io";	break;
+		case ide_au1xxx:	name = "au1xxx";	break;
 		default:		name = "(unknown)";	break;
 	}
 	len = sprintf(page, "%s\n", name);
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index ee38e6b143a..47f2b832555 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1013,6 +1013,8 @@ typedef struct ide_tape_obj {
 
 static DECLARE_MUTEX(idetape_ref_sem);
 
+static struct class *idetape_sysfs_class;
+
 #define to_ide_tape(obj) container_of(obj, struct ide_tape_obj, kref)
 
 #define ide_tape_g(disk) \
@@ -4704,6 +4706,10 @@ static void ide_tape_release(struct kref *kref)
 
 	drive->dsc_overlap = 0;
 	drive->driver_data = NULL;
+	class_device_destroy(idetape_sysfs_class,
+			MKDEV(IDETAPE_MAJOR, tape->minor));
+	class_device_destroy(idetape_sysfs_class,
+			MKDEV(IDETAPE_MAJOR, tape->minor + 128));
 	devfs_remove("%s/mt", drive->devfs_name);
 	devfs_remove("%s/mtn", drive->devfs_name);
 	devfs_unregister_tape(g->number);
@@ -4878,6 +4884,11 @@ static int ide_tape_probe(struct device *dev)
 
 	idetape_setup(drive, tape, minor);
 
+	class_device_create(idetape_sysfs_class, NULL,
+			MKDEV(IDETAPE_MAJOR, minor), dev, "%s", tape->name);
+	class_device_create(idetape_sysfs_class, NULL,
+			MKDEV(IDETAPE_MAJOR, minor + 128), dev, "n%s", tape->name);
+
 	devfs_mk_cdev(MKDEV(HWIF(drive)->major, minor),
 			S_IFCHR | S_IRUGO | S_IWUGO,
 			"%s/mt", drive->devfs_name);
@@ -4903,6 +4914,7 @@ MODULE_LICENSE("GPL");
 static void __exit idetape_exit (void)
 {
 	driver_unregister(&idetape_driver.gen_driver);
+	class_destroy(idetape_sysfs_class);
 	unregister_chrdev(IDETAPE_MAJOR, "ht");
 }
 
@@ -4911,11 +4923,33 @@ static void __exit idetape_exit (void)
  */
 static int idetape_init (void)
 {
+	int error = 1;
+	idetape_sysfs_class = class_create(THIS_MODULE, "ide_tape");
+	if (IS_ERR(idetape_sysfs_class)) {
+		idetape_sysfs_class = NULL;
+		printk(KERN_ERR "Unable to create sysfs class for ide tapes\n");
+		error = -EBUSY;
+		goto out;
+	}
+
 	if (register_chrdev(IDETAPE_MAJOR, "ht", &idetape_fops)) {
 		printk(KERN_ERR "ide-tape: Failed to register character device interface\n");
-		return -EBUSY;
+		error = -EBUSY;
+		goto out_free_class;
 	}
-	return driver_register(&idetape_driver.gen_driver);
+
+	error = driver_register(&idetape_driver.gen_driver);
+	if (error)
+		goto out_free_driver;
+
+	return 0;
+
+out_free_driver:
+	driver_unregister(&idetape_driver.gen_driver);
+out_free_class:
+	class_destroy(idetape_sysfs_class);
+out:
+	return error;
 }
 
 module_init(idetape_init);
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
new file mode 100644
index 00000000000..2b6327c576b
--- /dev/null
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -0,0 +1,1250 @@
+/*
+ * linux/drivers/ide/mips/au1xxx-ide.c  version 01.30.00        Aug. 02 2005
+ *
+ * BRIEF MODULE DESCRIPTION
+ * AMD Alchemy Au1xxx IDE interface routines over the Static Bus
+ *
+ * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE
+ *       Interface and Linux Device Driver" Application Note.
+ */
+#undef REALLY_SLOW_IO           /* most systems can safely undef this */
+
+#include <linux/config.h>       /* for CONFIG_BLK_DEV_IDEPCI */
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/hdreg.h>
+#include <linux/init.h>
+#include <linux/ide.h>
+#include <linux/sysdev.h>
+
+#include <linux/dma-mapping.h>
+
+#include <asm/io.h>
+#include <asm/mach-au1x00/au1xxx.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+
+#if CONFIG_PM
+#include <asm/mach-au1x00/au1xxx_pm.h>
+#endif
+
+#include <asm/mach-au1x00/au1xxx_ide.h>
+
+#define DRV_NAME	"au1200-ide"
+#define DRV_VERSION	"1.0"
+#define DRV_AUTHOR	"AMD PCS / Pete Popov <ppopov@embeddedalley.com>"
+#define DRV_DESC	"Au1200 IDE"
+
+static _auide_hwif auide_hwif;
+static spinlock_t ide_tune_drive_spin_lock = SPIN_LOCK_UNLOCKED;
+static spinlock_t ide_tune_chipset_spin_lock = SPIN_LOCK_UNLOCKED;
+static int dbdma_init_done = 0;
+
+/*
+ * local I/O functions
+ */
+u8 auide_inb(unsigned long port)
+{
+        return (au_readb(port));
+}
+
+u16 auide_inw(unsigned long port)
+{
+        return (au_readw(port));
+}
+
+u32 auide_inl(unsigned long port)
+{
+        return (au_readl(port));
+}
+
+void auide_insw(unsigned long port, void *addr, u32 count)
+{
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
+
+        _auide_hwif *ahwif = &auide_hwif;
+        chan_tab_t *ctp;
+        au1x_ddma_desc_t *dp;
+
+        if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1,
+				DDMA_FLAGS_NOIE)) {
+                printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__);
+                return;
+        }
+        ctp = *((chan_tab_t **)ahwif->rx_chan);
+        dp = ctp->cur_ptr;
+        while (dp->dscr_cmd0 & DSCR_CMD0_V)
+                ;
+        ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp);
+#else
+        while (count--)
+        {
+                *(u16 *)addr = au_readw(port);
+                addr +=2 ;
+        }
+#endif
+}
+
+void auide_insl(unsigned long port, void *addr, u32 count)
+{
+        while (count--)
+        {
+                *(u32 *)addr = au_readl(port);
+                /* NOTE: For IDE interfaces over PCMCIA,
+                 * 32-bit access does not work
+                 */
+                addr += 4;
+        }
+}
+
+void auide_outb(u8 addr, unsigned long port)
+{
+        return (au_writeb(addr, port));
+}
+
+void auide_outbsync(ide_drive_t *drive, u8 addr, unsigned long port)
+{
+        return (au_writeb(addr, port));
+}
+
+void auide_outw(u16 addr, unsigned long port)
+{
+        return (au_writew(addr, port));
+}
+
+void auide_outl(u32 addr, unsigned long port)
+{
+        return (au_writel(addr, port));
+}
+
+void auide_outsw(unsigned long port, void *addr, u32 count)
+{
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
+        _auide_hwif *ahwif = &auide_hwif;
+        chan_tab_t *ctp;
+        au1x_ddma_desc_t *dp;
+
+        if(!put_source_flags(ahwif->tx_chan, (void*)addr,
+                                          count << 1, DDMA_FLAGS_NOIE)) {
+                printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__);
+                return;
+        }
+        ctp = *((chan_tab_t **)ahwif->tx_chan);
+        dp = ctp->cur_ptr;
+        while (dp->dscr_cmd0 & DSCR_CMD0_V)
+                ;
+        ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp);
+#else
+        while (count--)
+        {
+                au_writew(*(u16 *)addr, port);
+                addr += 2;
+        }
+#endif
+}
+
+void auide_outsl(unsigned long port, void *addr, u32 count)
+{
+        while (count--)
+        {
+                au_writel(*(u32 *)addr, port);
+                /* NOTE: For IDE interfaces over PCMCIA,
+                 * 32-bit access does not work
+                 */
+                addr += 4;
+        }
+}
+
+static void auide_tune_drive(ide_drive_t *drive, byte pio)
+{
+        int mem_sttime;
+        int mem_stcfg;
+        unsigned long flags;
+        u8 speed;
+
+        /* get the best pio mode for the drive */
+        pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+
+        printk("%s: setting Au1XXX IDE to PIO mode%d\n",
+                drive->name, pio);
+
+        spin_lock_irqsave(&ide_tune_drive_spin_lock, flags);
+
+        mem_sttime = 0;
+        mem_stcfg  = au_readl(MEM_STCFG2);
+
+        /* set pio mode! */
+        switch(pio) {
+                case 0:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_PIO0_TWCS
+                                     | SBC_IDE_PIO0_TCSH
+                                     | SBC_IDE_PIO0_TCSOFF
+                                     | SBC_IDE_PIO0_TWP
+                                     | SBC_IDE_PIO0_TCSW
+                                     | SBC_IDE_PIO0_TPM
+                                     | SBC_IDE_PIO0_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg |= TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS;
+
+                        au_writel(mem_sttime,MEM_STTIME2);
+                        au_writel(mem_stcfg,MEM_STCFG2);
+                        break;
+
+                case 1:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_PIO1_TWCS
+                                     | SBC_IDE_PIO1_TCSH
+                                     | SBC_IDE_PIO1_TCSOFF
+                                     | SBC_IDE_PIO1_TWP
+                                     | SBC_IDE_PIO1_TCSW
+                                     | SBC_IDE_PIO1_TPM
+                                     | SBC_IDE_PIO1_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg |= TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS;
+                        break;
+
+                case 2:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_PIO2_TWCS
+                                     | SBC_IDE_PIO2_TCSH
+                                     | SBC_IDE_PIO2_TCSOFF
+                                     | SBC_IDE_PIO2_TWP
+                                     | SBC_IDE_PIO2_TCSW
+                                     | SBC_IDE_PIO2_TPM
+                                     | SBC_IDE_PIO2_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg &= ~TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS;
+                        break;
+
+                case 3:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_PIO3_TWCS
+                                     | SBC_IDE_PIO3_TCSH
+                                     | SBC_IDE_PIO3_TCSOFF
+                                     | SBC_IDE_PIO3_TWP
+                                     | SBC_IDE_PIO3_TCSW
+                                     | SBC_IDE_PIO3_TPM
+                                     | SBC_IDE_PIO3_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg |= TS_MASK;
+                        mem_stcfg &= ~TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS;
+
+                        break;
+
+                case 4:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_PIO4_TWCS
+                                     | SBC_IDE_PIO4_TCSH
+                                     | SBC_IDE_PIO4_TCSOFF
+                                     | SBC_IDE_PIO4_TWP
+                                     | SBC_IDE_PIO4_TCSW
+                                     | SBC_IDE_PIO4_TPM
+                                     | SBC_IDE_PIO4_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg &= ~TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS;
+                        break;
+        }
+
+        au_writel(mem_sttime,MEM_STTIME2);
+        au_writel(mem_stcfg,MEM_STCFG2);
+
+        spin_unlock_irqrestore(&ide_tune_drive_spin_lock, flags);
+
+        speed = pio + XFER_PIO_0;
+        ide_config_drive_speed(drive, speed);
+}
+
+static int auide_tune_chipset (ide_drive_t *drive, u8 speed)
+{
+        u8 mode = 0;
+        int mem_sttime;
+        int mem_stcfg;
+        unsigned long flags;
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        struct hd_driveid *id = drive->id;
+
+        /*
+         * Now see what the current drive is capable of,
+         * selecting UDMA only if the mate said it was ok.
+         */
+        if (id && (id->capability & 1) && drive->autodma &&
+            !__ide_dma_bad_drive(drive)) {
+                if (!mode && (id->field_valid & 2) && (id->dma_mword & 7)) {
+                        if      (id->dma_mword & 4)
+                                mode = XFER_MW_DMA_2;
+                        else if (id->dma_mword & 2)
+                                mode = XFER_MW_DMA_1;
+                        else if (id->dma_mword & 1)
+                                mode = XFER_MW_DMA_0;
+                }
+        }
+#endif
+
+        spin_lock_irqsave(&ide_tune_chipset_spin_lock, flags);
+
+        mem_sttime = 0;
+        mem_stcfg  = au_readl(MEM_STCFG2);
+
+        switch(speed) {
+                case XFER_PIO_4:
+                case XFER_PIO_3:
+                case XFER_PIO_2:
+                case XFER_PIO_1:
+                case XFER_PIO_0:
+                        auide_tune_drive(drive, (speed - XFER_PIO_0));
+                        break;
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+                case XFER_MW_DMA_2:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_MDMA2_TWCS
+                                     | SBC_IDE_MDMA2_TCSH
+                                     | SBC_IDE_MDMA2_TCSOFF
+                                     | SBC_IDE_MDMA2_TWP
+                                     | SBC_IDE_MDMA2_TCSW
+                                     | SBC_IDE_MDMA2_TPM
+                                     | SBC_IDE_MDMA2_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg &= ~TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS;
+
+                        mode = XFER_MW_DMA_2;
+                        break;
+                case XFER_MW_DMA_1:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_MDMA1_TWCS
+                                     | SBC_IDE_MDMA1_TCSH
+                                     | SBC_IDE_MDMA1_TCSOFF
+                                     | SBC_IDE_MDMA1_TWP
+                                     | SBC_IDE_MDMA1_TCSW
+                                     | SBC_IDE_MDMA1_TPM
+                                     | SBC_IDE_MDMA1_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg &= ~TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS;
+
+                        mode = XFER_MW_DMA_1;
+                        break;
+                case XFER_MW_DMA_0:
+                        /* set timing parameters for RCS2# */
+                        mem_sttime =   SBC_IDE_MDMA0_TWCS
+                                     | SBC_IDE_MDMA0_TCSH
+                                     | SBC_IDE_MDMA0_TCSOFF
+                                     | SBC_IDE_MDMA0_TWP
+                                     | SBC_IDE_MDMA0_TCSW
+                                     | SBC_IDE_MDMA0_TPM
+                                     | SBC_IDE_MDMA0_TA;
+                        /* set configuration for RCS2# */
+                        mem_stcfg |= TS_MASK;
+                        mem_stcfg &= ~TCSOE_MASK;
+                        mem_stcfg &= ~TOECS_MASK;
+                        mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS;
+
+                        mode = XFER_MW_DMA_0;
+                        break;
+#endif
+                default:
+                        return 1;
+        }
+
+        /*
+         * Tell the drive to switch to the new mode; abort on failure.
+         */
+        if (!mode || ide_config_drive_speed(drive, mode))
+        {
+                return 1;       /* failure */
+        }
+
+
+        au_writel(mem_sttime,MEM_STTIME2);
+        au_writel(mem_stcfg,MEM_STCFG2);
+
+        spin_unlock_irqrestore(&ide_tune_chipset_spin_lock, flags);
+
+        return 0;
+}
+
+/*
+ * Multi-Word DMA + DbDMA functions
+ */
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+
+static int in_drive_list(struct hd_driveid *id,
+                         const struct drive_list_entry *drive_table)
+{
+        for ( ; drive_table->id_model ; drive_table++){
+                if ((!strcmp(drive_table->id_model, id->model)) &&
+                        ((strstr(drive_table->id_firmware, id->fw_rev)) ||
+                        (!strcmp(drive_table->id_firmware, "ALL")))
+                )
+                        return 1;
+        }
+        return 0;
+}
+
+static int auide_build_sglist(ide_drive_t *drive,  struct request *rq)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data;
+        struct scatterlist *sg = hwif->sg_table;
+
+        ide_map_sg(drive, rq);
+
+        if (rq_data_dir(rq) == READ)
+                hwif->sg_dma_direction = DMA_FROM_DEVICE;
+        else
+                hwif->sg_dma_direction = DMA_TO_DEVICE;
+
+        return dma_map_sg(ahwif->dev, sg, hwif->sg_nents,
+                          hwif->sg_dma_direction);
+}
+
+static int auide_build_dmatable(ide_drive_t *drive)
+{
+        int i, iswrite, count = 0;
+        ide_hwif_t *hwif = HWIF(drive);
+
+        struct request *rq = HWGROUP(drive)->rq;
+
+        _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data;
+        struct scatterlist *sg;
+
+        iswrite = (rq_data_dir(rq) == WRITE);
+        /* Save for interrupt context */
+        ahwif->drive = drive;
+
+        /* Build sglist */
+        hwif->sg_nents = i = auide_build_sglist(drive, rq);
+
+        if (!i)
+                return 0;
+
+        /* fill the descriptors */
+        sg = hwif->sg_table;
+        while (i && sg_dma_len(sg)) {
+                u32 cur_addr;
+                u32 cur_len;
+
+                cur_addr = sg_dma_address(sg);
+                cur_len = sg_dma_len(sg);
+
+                while (cur_len) {
+                        u32 flags = DDMA_FLAGS_NOIE;
+                        unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
+
+                        if (++count >= PRD_ENTRIES) {
+                                printk(KERN_WARNING "%s: DMA table too small\n",
+                                drive->name);
+                                goto use_pio_instead;
+                        }
+
+                        /* Lets enable intr for the last descriptor only */
+                        if (1==i)
+                                flags = DDMA_FLAGS_IE;
+                        else
+                                flags = DDMA_FLAGS_NOIE;
+
+                        if (iswrite) {
+				if(!put_source_flags(ahwif->tx_chan,
+						(void*)(page_address(sg->page)
+							+ sg->offset),
+						tc, flags)) {
+					printk(KERN_ERR "%s failed %d\n",
+							__FUNCTION__, __LINE__);
+				}
+                        } else
+			{
+				if(!put_dest_flags(ahwif->rx_chan,
+						(void*)(page_address(sg->page)
+							+ sg->offset),
+						tc, flags)) {
+					printk(KERN_ERR "%s failed %d\n",
+							__FUNCTION__, __LINE__);
+				}
+                        }
+
+                        cur_addr += tc;
+                        cur_len -= tc;
+                }
+                sg++;
+                i--;
+        }
+
+        if (count)
+                return 1;
+
+use_pio_instead:
+        dma_unmap_sg(ahwif->dev,
+                     hwif->sg_table,
+                     hwif->sg_nents,
+                     hwif->sg_dma_direction);
+
+        return 0; /* revert to PIO for this request */
+}
+
+static int auide_dma_end(ide_drive_t *drive)
+{
+        ide_hwif_t *hwif = HWIF(drive);
+        _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data;
+
+        if (hwif->sg_nents) {
+                dma_unmap_sg(ahwif->dev, hwif->sg_table, hwif->sg_nents,
+                             hwif->sg_dma_direction);
+                hwif->sg_nents = 0;
+        }
+
+        return 0;
+}
+
+static void auide_dma_start(ide_drive_t *drive )
+{
+//      printk("%s\n", __FUNCTION__);
+}
+
+ide_startstop_t auide_dma_intr(ide_drive_t *drive)
+{
+        //printk("%s\n", __FUNCTION__);
+
+        u8 stat = 0, dma_stat = 0;
+
+        dma_stat = HWIF(drive)->ide_dma_end(drive);
+        stat = HWIF(drive)->INB(IDE_STATUS_REG);        /* get drive status */
+        if (OK_STAT(stat,DRIVE_READY,drive->bad_wstat|DRQ_STAT)) {
+                if (!dma_stat) {
+                        struct request *rq = HWGROUP(drive)->rq;
+
+                        ide_end_request(drive, 1, rq->nr_sectors);
+                        return ide_stopped;
+                }
+                printk(KERN_ERR "%s: dma_intr: bad DMA status (dma_stat=%x)\n",
+                                 drive->name, dma_stat);
+        }
+        return ide_error(drive, "dma_intr", stat);
+}
+
+static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command)
+{
+        //printk("%s\n", __FUNCTION__);
+
+        /* issue cmd to drive */
+        ide_execute_command(drive, command, &auide_dma_intr,
+                            (2*WAIT_CMD), NULL);
+}
+
+static int auide_dma_setup(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+
+        if (drive->media != ide_disk)
+                return 1;
+
+        if (!auide_build_dmatable(drive))
+                        /* try PIO instead of DMA */
+                        return 1;
+
+        drive->waiting_for_dma = 1;
+
+        return 0;
+}
+
+static int auide_dma_check(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        if( !dbdma_init_done ){
+                auide_hwif.white_list = in_drive_list(drive->id,
+                                                      dma_white_list);
+                auide_hwif.black_list = in_drive_list(drive->id,
+                                                      dma_black_list);
+                auide_hwif.drive = drive;
+                auide_ddma_init(&auide_hwif);
+                dbdma_init_done = 1;
+        }
+#endif
+
+        /* Is the drive in our DMA black list? */
+        if ( auide_hwif.black_list ) {
+                drive->using_dma = 0;
+                printk("%s found in dma_blacklist[]! Disabling DMA.\n",
+                drive->id->model);
+        }