Cleaned up AMD Au1200 IDE driver:

- converted to platform bus
- removed pci dependencies
- removed virt_to_phys/phys_to_virt calls
    
System now can root off of a disk.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
new file mode 100644

12 files changed, 1840 insertions, 7 deletions

diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
new file mode 100644
index 0000000..a7e4c4e
--- /dev/null
+++ b/Documentation/mips/AU1xxx_IDE.README
@@ -0,0 +1,168 @@
+README for MIPS AU1XXX IDE driver - Released 2005-07-15
+
+ABOUT
+-----
+This file describes the 'drivers/ide/mips/au1xxx-ide.c', related files and the
+services they provide.
+
+If you are short in patience and just want to know how to add your hard disc to
+the white or black list, go to the 'ADD NEW HARD DISC TO WHITE OR BLACK LIST'
+section.
+
+
+LICENSE
+-------
+
+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.
+
+
+FILES, CONFIGS AND COMPATABILITY
+--------------------------------
+
+Two files are introduced:
+
+  a) 'include/asm-mips/mach-au1x00/au1xxx_ide.h'
+     containes : struct _auide_hwif
+                 struct drive_list_entry dma_white_list
+                 struct drive_list_entry dma_black_list
+                 timing parameters for PIO mode 0/1/2/3/4
+                 timing parameters for MWDMA 0/1/2
+
+  b) 'drivers/ide/mips/au1xxx-ide.c'
+     contains the functionality of the AU1XXX IDE driver
+
+Four configs variables are introduced:
+
+  CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA    - enable the PIO+DBDMA mode
+  CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA  - enable the MWDMA mode
+  CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON - set Burstable FIFO in DBDMA
+                                           controler
+  CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ - maximum transfer size
+                                           per descriptor
+
+If MWDMA is enabled and the connected hard disc is not on the white list, the
+kernel switches to a "safe mwdma mode" at boot time. In this mode the IDE
+performance is substantial slower then in full speed mwdma. In this case
+please add your hard disc to the white list (follow instruction from 'ADD NEW
+HARD DISC TO WHITE OR BLACK LIST' section).
+
+
+SUPPORTED IDE MODES
+-------------------
+
+The AU1XXX IDE driver supported all PIO modes - PIO mode 0/1/2/3/4 - and all
+MWDMA modes - MWDMA 0/1/2 -. There is no support for SWDMA and UDMA mode.
+
+To change the PIO mode use the program hdparm with option -p, e.g.
+'hdparm -p0 [device]' for PIO mode 0. To enable the MWDMA mode use the option
+-X, e.g. 'hdparm -X32 [device]' for MWDMA mode 0.
+
+
+PERFORMANCE CONFIGURATIONS
+--------------------------
+
+If the used system doesn't need USB support enable the following kernel configs:
+
+CONFIG_IDE=y
+CONFIG_BLK_DEV_IDE=y
+CONFIG_IDE_GENERIC=y
+CONFIG_BLK_DEV_IDEPCI=y
+CONFIG_BLK_DEV_GENERIC=y
+CONFIG_BLK_DEV_IDEDMA_PCI=y
+CONFIG_IDEDMA_PCI_AUTO=y
+CONFIG_BLK_DEV_IDE_AU1XXX=y
+CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
+CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON=y
+CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ=128
+CONFIG_BLK_DEV_IDEDMA=y
+CONFIG_IDEDMA_AUTO=y
+
+If the used system need the USB support enable the following kernel configs for
+high IDE to USB throughput.
+
+CONFIG_BLK_DEV_IDEDISK=y
+CONFIG_IDE_GENERIC=y
+CONFIG_BLK_DEV_IDEPCI=y
+CONFIG_BLK_DEV_GENERIC=y
+CONFIG_BLK_DEV_IDEDMA_PCI=y
+CONFIG_IDEDMA_PCI_AUTO=y
+CONFIG_BLK_DEV_IDE_AU1XXX=y
+CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
+CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ=128
+CONFIG_BLK_DEV_IDEDMA=y
+CONFIG_IDEDMA_AUTO=y
+
+
+ADD NEW HARD DISC TO WHITE OR BLACK LIST
+----------------------------------------
+
+Step 1 : detect the model name of your hard disc
+
+  a) connect your hard disc to the AU1XXX
+
+  b) boot your kernel and get the hard disc model.
+
+     Example boot log:
+
+     --snipped--
+     Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
+     ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
+     Au1xxx IDE(builtin) configured for MWDMA2
+     Probing IDE interface ide0...
+     hda: Maxtor 6E040L0, ATA DISK drive
+     ide0 at 0xac800000-0xac800007,0xac8001c0 on irq 64
+     hda: max request size: 64KiB
+     hda: 80293248 sectors (41110 MB) w/2048KiB Cache, CHS=65535/16/63, (U)DMA
+     --snipped--
+
+     In this example 'Maxtor 6E040L0'.
+
+Step  2 : edit 'include/asm-mips/mach-au1x00/au1xxx_ide.h'
+
+  Add your hard disc to the dma_white_list or dma_black_list structur.
+
+Step 3 : Recompile the kernel
+
+  Enable MWDMA support in the kernel configuration. Recompile the kernel and
+  reboot.
+
+Step 4 : Tests
+
+  If you have add a hard disc to the white list, please run some stress tests
+  for verification.
+
+
+ACKNOWLEDGMENTS
+---------------
+
+These drivers wouldn't have been done without the base of kernel 2.4.x AU1XXX
+IDE driver from AMD.
+
+Additional input also from:
+Matthias Lenk <matthias.lenk@amd.com>
+
+Happy hacking!
+Enrico Walther <enrico.walther@amd.com>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8746e1b..dc5c629 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -799,7 +799,7 @@ config MIPS_BOSPORUS
 config MIPS_DB1200
 	bool "AMD Alchemy DB1200 board"
 	select SOC_AU1200
-	select DMA_NONCOHERENT
+	select DMA_COHERENT
 	select MIPS_DISABLE_OBSOLETE_IDE
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 8f78c2f..eb5803a 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -197,6 +197,12 @@ find_dbdev_id (u32 id)
 	return NULL;
 }
 
+void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp)
+{
+        return phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+}
+EXPORT_SYMBOL(au1xxx_ddma_get_nextptr_virt);
+
 u32
 au1xxx_ddma_add_device(dbdev_tab_t *dev)
 {
diff --git a/arch/mips/au1000/common/platform.c b/arch/mips/au1000/common/platform.c
index 0c3fd72..4aca18f 100644
--- a/arch/mips/au1000/common/platform.c
+++ b/arch/mips/au1000/common/platform.c
@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <linux/resource.h>
 
-#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx.h>
 
 /* OHCI (USB full speed host controller) */
 static struct resource au1xxx_usb_ohci_resources[] = {
@@ -154,7 +154,6 @@ static struct platform_device au1xxx_usb_otg_device = {
 	.resource	= au1xxx_usb_otg_resources,
 };
 
-/*** AU1200 LCD controller ***/
 static struct resource au1200_lcd_resources[] = {
 	[0] = {
 		.start          = LCD_PHYS_ADDR,
@@ -168,6 +167,19 @@ static struct resource au1200_lcd_resources[] = {
 	}
 };
 
+static struct resource au1200_ide0_resources[] = {
+	[0] = {
+		.start		= AU1XXX_ATA_PHYS_ADDR,
+		.end 		= AU1XXX_ATA_PHYS_ADDR + AU1XXX_ATA_PHYS_LEN,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1XXX_ATA_INT,
+		.end		= AU1XXX_ATA_INT,
+		.flags		= IORESOURCE_IRQ,
+	}
+};
+
 static u64 au1200_lcd_dmamask = ~(u32)0;
 
 static struct platform_device au1200_lcd_device = {
@@ -180,6 +192,21 @@ static struct platform_device au1200_lcd_device = {
 	.num_resources  = ARRAY_SIZE(au1200_lcd_resources),
 	.resource       = au1200_lcd_resources,
 };
+
+
+static u64 ide0_dmamask = ~(u32)0;
+
+static struct platform_device au1200_ide0_device = {
+	.name		= "au1200-ide",
+	.id		= 0,
+	.dev = {
+		.dma_mask 		= &ide0_dmamask,
+		.coherent_dma_mask	= 0xffffffff,
+	},
+	.num_resources = ARRAY_SIZE(au1200_ide0_resources),
+	.resource	= au1200_ide0_resources,
+};
+
 #endif
 
 static struct platform_device *au1xxx_platform_devices[] __initdata = {
@@ -194,6 +221,7 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
 	&au1xxx_usb_gdt_device,
 	&au1xxx_usb_otg_device,
 	&au1200_lcd_device,
+	&au1200_ide0_device,
 #endif
 };
 
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
index 2ec64e7..59e70e5 100644
--- a/arch/mips/au1000/pb1200/irqmap.c
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -22,6 +22,7 @@
  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  */
+#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/irq.h>
@@ -65,7 +66,7 @@ int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t);
  */
 static volatile int pb1200_cascade_en=0;
 
-void pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
 {
 	unsigned short bisr = bcsr->int_status;
 	int extirq_nr = 0;
@@ -78,6 +79,7 @@ void pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
 		/* Ack and dispatch IRQ */
 		do_IRQ(extirq_nr,regs);
 	}
+	return IRQ_RETVAL(1);
 }
 
 inline void pb1200_enable_irq(unsigned int irq_nr)
@@ -97,7 +99,7 @@ static unsigned int pb1200_startup_irq( unsigned int irq_nr )
 	if (++pb1200_cascade_en == 1)
 	{
 		request_irq(AU1000_GPIO_7, &pb1200_cascade_handler,
-			0, "Pb1200 Cascade", &pb1200_cascade_handler );
+			0, "Pb1200 Cascade", (void *)&pb1200_cascade_handler );
 #ifdef CONFIG_MIPS_PB1200
     /* We have a problem with CPLD rev3. Enable a workaround */
 	if( ((bcsr->whoami & BCSR_WHOAMI_CPLD)>>4) <= 3)
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 1cadd2c..a737886 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-proc.c b/drivers/ide/ide-proc.c
index 4063d2c..84665e2 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/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
new file mode 100644
index 0000000..2b6327c
--- /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);
+        }
+        else
+                drive->using_dma = 1;
+
+        return HWIF(drive)->ide_dma_host_on(drive);
+}
+
+static int auide_dma_test_irq(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+
+        if (!drive->waiting_for_dma)
+                printk(KERN_WARNING "%s: ide_dma_test_irq \
+                                     called while not waiting\n", drive->name);
+
+        /* If dbdma didn't execute the STOP command yet, the
+         * active bit is still set
+	 */
+        drive->waiting_for_dma++;
+        if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) {
+                printk(KERN_WARNING "%s: timeout waiting for ddma to \
+                                     complete\n", drive->name);
+                return 1;
+        }
+        udelay(10);
+        return 0;
+}
+
+static int auide_dma_host_on(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+        return 0;
+}
+
+static int auide_dma_on(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+        drive->using_dma = 1;
+        return auide_dma_host_on(drive);
+}
+
+
+static int auide_dma_host_off(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+        return 0;
+}
+
+static int auide_dma_off_quietly(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+        drive->using_dma = 0;
+        return auide_dma_host_off(drive);
+}
+
+static int auide_dma_lostirq(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+
+        printk(KERN_ERR "%s: IRQ lost\n", drive->name);
+        return 0;
+}
+
+static void auide_ddma_tx_callback(int irq, void *param, struct pt_regs *regs)
+{
+//      printk("%s\n", __FUNCTION__);
+
+        _auide_hwif *ahwif = (_auide_hwif*)param;
+        ahwif->drive->waiting_for_dma = 0;
+        return;
+}
+
+static void auide_ddma_rx_callback(int irq, void *param, struct pt_regs *regs)
+{
+//      printk("%s\n", __FUNCTION__);
+
+        _auide_hwif *ahwif = (_auide_hwif*)param;
+        ahwif->drive->waiting_for_dma = 0;
+        return;
+}
+
+static int auide_dma_timeout(ide_drive_t *drive)
+{
+//      printk("%s\n", __FUNCTION__);
+
+        printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name);
+
+        if (HWIF(drive)->ide_dma_test_irq(drive))
+                return 0;
+
+        return HWIF(drive)->ide_dma_end(drive);
+}
+#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
+
+
+static int auide_ddma_init( _auide_hwif *auide )
+{
+//      printk("%s\n", __FUNCTION__);
+
+        dbdev_tab_t source_dev_tab;
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
+        dbdev_tab_t target_dev_tab;
+        ide_hwif_t *hwif = auide->hwif;
+        char warning_output [2][80];
+        int i;
+#endif
+
+        /* Add our custom device to DDMA device table */
+        /* Create our new device entries in the table */
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
+        source_dev_tab.dev_id = AU1XXX_ATA_DDMA_REQ;
+
+        if( auide->white_list || auide->black_list ){
+                source_dev_tab.dev_tsize       = 8;
+                source_dev_tab.dev_devwidth    = 32;
+                source_dev_tab.dev_physaddr    = (u32)AU1XXX_ATA_PHYS_ADDR;
+                source_dev_tab.dev_intlevel    = 0;
+                source_dev_tab.dev_intpolarity = 0;
+
+                /* init device table for target - static bus controller - */
+                target_dev_tab.dev_id          = DSCR_CMD0_ALWAYS;
+                target_dev_tab.dev_tsize       = 8;
+                target_dev_tab.dev_devwidth    = 32;
+                target_dev_tab.dev_physaddr    = (u32)AU1XXX_ATA_PHYS_ADDR;
+                target_dev_tab.dev_intlevel    = 0;
+                target_dev_tab.dev_intpolarity = 0;
+                target_dev_tab.dev_flags       = DEV_FLAGS_ANYUSE;
+        }
+        else{
+                source_dev_tab.dev_tsize       = 1;
+                source_dev_tab.dev_devwidth    = 16;
+                source_dev_tab.dev_physaddr    = (u32)AU1XXX_ATA_PHYS_ADDR;
+                source_dev_tab.dev_intlevel    = 0;
+                source_dev_tab.dev_intpolarity = 0;
+
+                /* init device table for target - static bus controller - */
+                target_dev_tab.dev_id          = DSCR_CMD0_ALWAYS;
+                target_dev_tab.dev_tsize       = 1;
+                target_dev_tab.dev_devwidth    = 16;
+                target_dev_tab.dev_physaddr    = (u32)AU1XXX_ATA_PHYS_ADDR;
+                target_dev_tab.dev_intlevel    = 0;
+                target_dev_tab.dev_intpolarity = 0;
+                target_dev_tab.dev_flags       = DEV_FLAGS_ANYUSE;
+
+                sprintf(&warning_output[0][0],
+                        "%s is not on ide driver white list.",
+                        auide_hwif.drive->id->model);
+                for ( i=strlen(&warning_output[0][0]) ; i<76; i++ ){
+                        sprintf(&warning_output[0][i]," ");
+                }
+
+                sprintf(&warning_output[1][0],
+                "To add %s please read 'Documentation/mips/AU1xxx_IDE.README'.",
+                        auide_hwif.drive->id->model);
+                for ( i=strlen(&warning_output[1][0]) ; i<76; i++ ){
+                        sprintf(&warning_output[1][i]," ");
+                }
+
+                printk("\n****************************************");
+                printk("****************************************\n");
+                printk("* %s *\n",&warning_output[0][0]);
+                printk("* Switch to safe MWDMA Mode!            ");
+                printk("                                       *\n");
+                printk("* %s *\n",&warning_output[1][0]);
+                printk("****************************************");
+                printk("****************************************\n\n");
+        }
+#else
+        source_dev_tab.dev_id = DSCR_CMD0_ALWAYS;
+        source_dev_tab.dev_tsize       = 8;
+        source_dev_tab.dev_devwidth    = 32;
+        source_dev_tab.dev_physaddr    = (u32)AU1XXX_ATA_PHYS_ADDR;
+        source_dev_tab.dev_intlevel    = 0;
+        source_dev_tab.dev_intpolarity = 0;
+#endif
+
+#if CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON
+        /* set flags for tx channel */
+        source_dev_tab.dev_flags =  DEV_FLAGS_OUT
+                                  | DEV_FLAGS_SYNC
+                                  | DEV_FLAGS_BURSTABLE;
+        auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
+        /* set flags for rx channel */
+        source_dev_tab.dev_flags =  DEV_FLAGS_IN
+                                  | DEV_FLAGS_SYNC
+                                  | DEV_FLAGS_BURSTABLE;
+        auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
+#else
+        /* set flags for tx channel */
+        source_dev_tab.dev_flags = DEV_FLAGS_OUT | DEV_FLAGS_SYNC;
+        auide->tx_dev_id         = au1xxx_ddma_add_device( &source_dev_tab );
+        /* set flags for rx channel */
+        source_dev_tab.dev_flags = DEV_FLAGS_IN | DEV_FLAGS_SYNC;
+        auide->rx_dev_id         = au1xxx_ddma_add_device( &source_dev_tab );
+#endif
+
+#if  defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
+
+        auide->target_dev_id           = au1xxx_ddma_add_device(&target_dev_tab);
+
+        /* Get a channel for TX */
+        auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id,
+                                                 auide->tx_dev_id,
+                                                 auide_ddma_tx_callback,
+                                                 (void*)auide);
+        /* Get a channel for RX */
+        auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
+                                                 auide->target_dev_id,
+                                                 auide_ddma_rx_callback,
+                                                 (void*)auide);
+#else   /* CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA */
+        /*
+         * Note: if call back is not enabled, update ctp->cur_ptr manually
+         */
+        auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS,
+                                                 auide->tx_dev_id,
+                                                 NULL,
+                                                 (void*)auide);
+        auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
+                                                 DSCR_CMD0_ALWAYS,
+                                                 NULL,
+                                                 (void*)auide);
+#endif
+        auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
+                                                             NUM_DESCRIPTORS);
+        auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
+                                                             NUM_DESCRIPTORS);
+
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
+        hwif->dmatable_cpu = dma_alloc_coherent(auide->dev,
+                                                PRD_ENTRIES * PRD_BYTES,        /* 1 Page */
+                                                &hwif->dmatable_dma, GFP_KERNEL);
+
+        auide->sg_table = kmalloc(sizeof(struct scatterlist) * PRD_ENTRIES,
+                                GFP_KERNEL|GFP_DMA);
+        if (auide->sg_table == NULL) {
+                return -ENOMEM;
+        }
+#endif
+        au1xxx_dbdma_start( auide->tx_chan );
+        au1xxx_dbdma_start( auide->rx_chan );
+        return 0;
+}
+
+static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif)
+{
+        int i;
+#define ide_ioreg_t unsigned long
+        ide_ioreg_t *ata_regs = hw->io_ports;
+
+	/* fixme */
+        for (i = 0; i < IDE_CONTROL_OFFSET; i++) {
+                *ata_regs++ = (ide_ioreg_t) ahwif->regbase
+                            + (ide_ioreg_t)(i << AU1XXX_ATA_REG_OFFSET);
+        }
+
+        /* set the Alternative Status register */
+        *ata_regs = (ide_ioreg_t) ahwif->regbase
+                  + (ide_ioreg_t)(14 << AU1XXX_ATA_REG_OFFSET);
+}
+
+static int au_ide_probe(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+        _auide_hwif *ahwif = &auide_hwif;
+        ide_hwif_t *hwif;
+	struct resource *res;
+	int ret = 0;
+
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
+        char *mode = "MWDMA2";
+#elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
+        char *mode = "PIO+DDMA(offload)";
+#endif
+
+        memset(&auide_hwif, 0, sizeof(_auide_hwif));
+        auide_hwif.dev                  = 0;
+
+	ahwif->dev = dev;
+	ahwif->irq = platform_get_irq(pdev, 0);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	if (res == NULL) {
+		pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id);
+		ret = -ENODEV;
+		goto out;
+	}
+
+        if (!request_mem_region (res->start, res->end-res->start, pdev->name)) {
+		pr_debug("%s: request_mem_region failed\n", DRV_NAME);
+                ret =  -EBUSY;
+		goto out;
+        }
+
+	ahwif->regbase = (u32)ioremap(res->start, res->end-res->start);
+	if (ahwif->regbase == 0) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+        hwif                            = &ide_hwifs[pdev->id];
+	hw_regs_t *hw 			= &hwif->hw;
+        hwif->irq = hw->irq             = ahwif->irq;
+        hwif->chipset                   = ide_au1xxx;
+
+        auide_setup_ports(hw, ahwif);
+	memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
+        hwif->rqsize = CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ;
+        hwif->rqsize                    = ((hwif->rqsize > AU1XXX_ATA_RQSIZE)
+                                        || (hwif->rqsize < 32)) ? AU1XXX_ATA_RQSIZE : hwif->rqsize;
+#else /* if kernel config is not set */
+        hwif->rqsize                    = AU1XXX_ATA_RQSIZE;
+#endif
+
+        hwif->ultra_mask                = 0x0;  /* Disable Ultra DMA */
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        hwif->mwdma_mask                = 0x07; /* Multimode-2 DMA  */
+        hwif->swdma_mask                = 0x07;
+#else
+        hwif->mwdma_mask                = 0x0;
+        hwif->swdma_mask                = 0x0;
+#endif
+        //hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
+        hwif->noprobe = 0;
+        hwif->drives[0].unmask          = 1;
+        hwif->drives[1].unmask          = 1;
+
+        /* hold should be on in all cases */
+        hwif->hold                      = 1;
+        hwif->mmio                      = 2;
+
+        /* set up local I/O function entry points */
+        hwif->INB                       = auide_inb;
+        hwif->INW                       = auide_inw;
+        hwif->INL                       = auide_inl;
+        hwif->INSW                      = auide_insw;
+        hwif->INSL                      = auide_insl;
+        hwif->OUTB                      = auide_outb;
+        hwif->OUTBSYNC                  = auide_outbsync;
+        hwif->OUTW                      = auide_outw;
+        hwif->OUTL                      = auide_outl;
+        hwif->OUTSW                     = auide_outsw;
+        hwif->OUTSL                     = auide_outsl;
+
+        hwif->tuneproc                  = &auide_tune_drive;
+        hwif->speedproc                 = &auide_tune_chipset;
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        hwif->ide_dma_off_quietly       = &auide_dma_off_quietly;
+        hwif->ide_dma_timeout           = &auide_dma_timeout;
+
+        hwif->ide_dma_check             = &auide_dma_check;
+        hwif->dma_exec_cmd              = &auide_dma_exec_cmd;
+        hwif->dma_start                 = &auide_dma_start;
+        hwif->ide_dma_end               = &auide_dma_end;
+        hwif->dma_setup                 = &auide_dma_setup;
+        hwif->ide_dma_test_irq          = &auide_dma_test_irq;
+        hwif->ide_dma_host_off          = &auide_dma_host_off;
+        hwif->ide_dma_host_on           = &auide_dma_host_on;
+        hwif->ide_dma_lostirq           = &auide_dma_lostirq;
+        hwif->ide_dma_on                = &auide_dma_on;
+
+        hwif->autodma                   = 1;
+        hwif->drives[0].autodma         = hwif->autodma;
+        hwif->drives[1].autodma         = hwif->autodma;
+        hwif->atapi_dma                 = 1;
+        hwif->drives[0].using_dma       = 1;
+        hwif->drives[1].using_dma       = 1;
+#else /* !CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
+        hwif->autodma                   = 0;
+        hwif->channel                   = 0;
+        hwif->hold                      = 1;
+        hwif->select_data               = 0;    /* no chipset-specific code */
+        hwif->config_data               = 0;    /* no chipset-specific code */
+
+        hwif->drives[0].autodma         = 0;
+        hwif->drives[0].drive_data      = 0;    /* no drive data */
+        hwif->drives[0].using_dma       = 0;
+        hwif->drives[0].waiting_for_dma = 0;
+        hwif->drives[0].autotune        = 1;    /* 1=autotune, 2=noautotune, 0=default */
+        /* secondary hdd not supported */
+        hwif->drives[1].autodma         = 0;
+
+        hwif->drives[1].drive_data      = 0;
+        hwif->drives[1].using_dma       = 0;
+        hwif->drives[1].waiting_for_dma = 0;
+        hwif->drives[1].autotune        = 2;   /* 1=autotune, 2=noautotune, 0=default */
+#endif
+        hwif->drives[0].io_32bit        = 0;   /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
+        hwif->drives[1].io_32bit        = 0;   /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
+
+        /*Register Driver with PM Framework*/
+#ifdef CONFIG_PM
+        auide_hwif.pm.lock    = SPIN_LOCK_UNLOCKED;
+        auide_hwif.pm.stopped = 0;
+
+        auide_hwif.pm.dev = new_au1xxx_power_device( "ide",
+                                                &au1200ide_pm_callback,
+                                                NULL);
+        if ( auide_hwif.pm.dev == NULL )
+                printk(KERN_INFO "Unable to create a power management \
+                                device entry for the au1200-IDE.\n");
+        else
+                printk(KERN_INFO "Power management device entry for the \
+                                au1200-IDE loaded.\n");
+#endif
+
+        auide_hwif.hwif                 = hwif;
+        hwif->hwif_data                 = &auide_hwif;
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
+        auide_ddma_init(&auide_hwif);
+        dbdma_init_done = 1;
+#endif
+
+	probe_hwif_init(hwif);
+	dev_set_drvdata(dev, hwif);
+
+        printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
+
+out:
+        return ret;
+}
+
+static int au_ide_remove(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct resource *res;
+	ide_hwif_t *hwif = dev_get_drvdata(dev);
+        _auide_hwif *ahwif = &auide_hwif;
+
+	ide_unregister(hwif - ide_hwifs);
+
+	iounmap((void *)ahwif->regbase);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(res->start, res->end - res->start);
+
+	return 0;
+}
+
+static struct device_driver au1200_ide_driver = {
+	.name		= "au1200-ide",
+	.bus		= &platform_bus_type,
+	.probe 		= au_ide_probe,
+	.remove		= au_ide_remove,
+};
+
+static int __init au_ide_init(void)
+{
+	return driver_register(&au1200_ide_driver);
+}
+
+static void __init au_ide_exit(void)
+{
+	driver_unregister(&au1200_ide_driver);
+}
+
+#ifdef CONFIG_PM
+int au1200ide_pm_callback( au1xxx_power_dev_t *dev,\
+                        au1xxx_request_t request, void *data) {
+
+        unsigned int d, err = 0;
+        unsigned long flags;
+
+        spin_lock_irqsave(auide_hwif.pm.lock, flags);
+
+        switch (request){
+                case AU1XXX_PM_SLEEP:
+                        err = au1xxxide_pm_sleep(dev);
+                        break;
+                case AU1XXX_PM_WAKEUP:
+                        d = *((unsigned int*)data);
+                        if ( d > 0 && d <= 99) {
+                                err = au1xxxide_pm_standby(dev);
+                        }
+                        else {
+                                err = au1xxxide_pm_resume(dev);
+                        }
+                        break;
+                case AU1XXX_PM_GETSTATUS:
+                        err = au1xxxide_pm_getstatus(dev);
+                        break;
+                case AU1XXX_PM_ACCESS:
+                        err = au1xxxide_pm_access(dev);
+                        break;
+                case AU1XXX_PM_IDLE:
+                        err = au1xxxide_pm_idle(dev);
+                        break;
+                case AU1XXX_PM_CLEANUP:
+                        err = au1xxxide_pm_cleanup(dev);
+                        break;
+                default:
+                        err = -1;
+                        break;
+        }
+
+        spin_unlock_irqrestore(auide_hwif.pm.lock, flags);
+
+        return err;
+}
+
+static int au1xxxide_pm_standby( au1xxx_power_dev_t *dev ) {
+        return 0;
+}
+
+static int au1xxxide_pm_sleep( au1xxx_power_dev_t *dev ) {
+
+        int retval;
+        ide_hwif_t *hwif = auide_hwif.hwif;
+        struct request rq;
+        struct request_pm_state rqpm;
+        ide_task_t args;
+
+        if(auide_hwif.pm.stopped)
+                return -1;
+
+        /*
+         * wait until hard disc is ready
+         */
+        if ( wait_for_ready(&hwif->drives[0], 35000) ) {
+                printk("Wait for drive sleep timeout!\n");
+                retval = -1;
+        }
+
+        /*
+         * sequenz to tell the high level ide driver that pm is resuming
+         */
+        memset(&rq, 0, sizeof(rq));
+        memset(&rqpm, 0, sizeof(rqpm));
+        memset(&args, 0, sizeof(args));
+        rq.flags = REQ_PM_SUSPEND;
+        rq.special = &args;
+        rq.pm = &rqpm;
+        rqpm.pm_step = ide_pm_state_start_suspend;
+        rqpm.pm_state = PMSG_SUSPEND;
+
+        retval = ide_do_drive_cmd(&hwif->drives[0], &rq, ide_wait);
+
+        if (wait_for_ready (&hwif->drives[0], 35000)) {
+                printk("Wait for drive sleep timeout!\n");
+                retval = -1;
+        }
+
+        /*
+         * stop dbdma channels
+         */
+        au1xxx_dbdma_reset(auide_hwif.tx_chan);
+        au1xxx_dbdma_reset(auide_hwif.rx_chan);
+
+        auide_hwif.pm.stopped = 1;
+
+        return retval;
+}
+
+static int au1xxxide_pm_resume( au1xxx_power_dev_t *dev ) {
+
+        int retval;
+        ide_hwif_t *hwif = auide_hwif.hwif;
+        struct request rq;
+        struct request_pm_state rqpm;
+        ide_task_t args;
+
+        if(!auide_hwif.pm.stopped)
+                return -1;
+
+        /*
+         * start dbdma channels
+         */
+        au1xxx_dbdma_start(auide_hwif.tx_chan);
+        au1xxx_dbdma_start(auide_hwif.rx_chan);
+
+        /*
+         * wait until hard disc is ready
+         */
+        if (wait_for_ready ( &hwif->drives[0], 35000)) {
+                printk("Wait for drive wake up timeout!\n");
+                retval = -1;
+        }
+
+        /*
+         * sequenz to tell the high level ide driver that pm is resuming
+         */
+        memset(&rq, 0, sizeof(rq));
+        memset(&rqpm, 0, sizeof(rqpm));
+        memset(&args, 0, sizeof(args));
+        rq.flags = REQ_PM_RESUME;
+        rq.special = &args;
+        rq.pm = &rqpm;
+        rqpm.pm_step = ide_pm_state_start_resume;
+        rqpm.pm_state = PMSG_ON;
+
+        retval = ide_do_drive_cmd(&hwif->drives[0], &rq, ide_head_wait);
+
+        /*
+        * wait for hard disc
+        */
+        if ( wait_for_ready(&hwif->drives[0], 35000) ) {
+                printk("Wait for drive wake up timeout!\n");
+                retval = -1;
+        }
+
+        auide_hwif.pm.stopped = 0;
+
+        return retval;
+}
+
+static int au1xxxide_pm_getstatus( au1xxx_power_dev_t *dev ) {
+        return dev->cur_state;
+}
+
+static int au1xxxide_pm_access( au1xxx_power_dev_t *dev ) {
+        if (dev->cur_state != AWAKE_STATE)
+                return 0;
+        else
+                return -1;
+}
+
+static int au1xxxide_pm_idle( au1xxx_power_dev_t *dev ) {
+        return 0;
+}
+
+static int au1xxxide_pm_cleanup( au1xxx_power_dev_t *dev ) {
+        return 0;
+}
+#endif /* CONFIG_PM */
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("AU1200 IDE driver");
+
+module_init(au_ide_init);
+module_exit(au_ide_exit);
diff --git a/include/asm-mips/mach-au1x00/au1xxx.h b/include/asm-mips/mach-au1x00/au1xxx.h
new file mode 100644
index 0000000..b7b46dd
--- /dev/null
+++ b/include/asm-mips/mach-au1x00/au1xxx.h
@@ -0,0 +1,44 @@
+/*
+ *  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.
+ */
+
+#ifndef _AU1XXX_H_
+#define _AU1XXX_H_
+
+#include <linux/config.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+#if defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || defined(CONFIG_MIPS_DB1500) || defined(CONFIG_MIPS_DB1550)
+#include <asm/mach-db1x00/db1x00.h>
+
+#elif defined(CONFIG_MIPS_PB1550)
+#include <asm/mach-pb1x00/pb1550.h>
+
+#elif defined(CONFIG_MIPS_PB1200)
+#include <asm/mach-pb1x00/pb1200.h>
+
+#elif defined(CONFIG_MIPS_DB1200)
+#include <asm/mach-db1x00/db1200.h>
+
+#endif
+
+#endif /* _AU1XXX_H_ */
diff --git a/include/asm-mips/mach-au1x00/au1xxx_dbdma.h b/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
index ddbd9f5..b327bcd 100644
--- a/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
+++ b/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
@@ -368,6 +368,7 @@ void au1xxx_dbdma_dump(u32 chanid);
 u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr );
 
 u32 au1xxx_ddma_add_device( dbdev_tab_t *dev );
+void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp);
 
 /*
  	Some compatibilty macros --
@@ -375,9 +376,12 @@ u32 au1xxx_ddma_add_device( dbdev_tab_t *dev );
 */
 #define	au1xxx_dbdma_put_source(chanid,buf,nbytes)_au1xxx_dbdma_put_source(chanid, buf, nbytes, DDMA_FLAGS_IE)
 #define	au1xxx_dbdma_put_source_flags(chanid,buf,nbytes,flags) _au1xxx_dbdma_put_source(chanid, buf, nbytes, flags)
+#define	put_source_flags(chanid,buf,nbytes,flags) au1xxx_dbdma_put_source_flags(chanid,buf,nbytes,flags)
+
 
 #define au1xxx_dbdma_put_dest(chanid,buf,nbytes) _au1xxx_dbdma_put_dest(chanid, buf, nbytes, DDMA_FLAGS_IE)
 #define	au1xxx_dbdma_put_dest_flags(chanid,buf,nbytes,flags) _au1xxx_dbdma_put_dest(chanid, buf, nbytes, flags)
+#define	put_dest_flags(chanid,buf,nbytes,flags) au1xxx_dbdma_put_dest_flags(chanid,buf,nbytes,flags)
 
 /*
  *	Flags for the put_source/put_dest functions.
diff --git a/include/asm-mips/mach-au1x00/au1xxx_ide.h b/include/asm-mips/mach-au1x00/au1xxx_ide.h
new file mode 100644
index 0000000..33d275c
--- /dev/null
+++ b/include/asm-mips/mach-au1x00/au1xxx_ide.h
@@ -0,0 +1,301 @@
+/*
+ * include/asm-mips/mach-au1x00/au1xxx_ide.h  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.
+ */
+#include <linux/config.h>
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        #define DMA_WAIT_TIMEOUT        100
+        #define NUM_DESCRIPTORS         PRD_ENTRIES
+#else /* CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA */
+        #define NUM_DESCRIPTORS         2
+#endif
+
+#ifndef AU1XXX_ATA_RQSIZE
+        #define AU1XXX_ATA_RQSIZE       128
+#endif
+
+/* Disable Burstable-Support for DBDMA */
+#ifndef CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON
+        #define CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON  0
+#endif
+
+#ifdef CONFIG_PM
+/*
+* This will enable the device to be powered up when write() or read()
+* is called. If this is not defined, the driver will return -EBUSY.
+*/
+#define WAKE_ON_ACCESS 1
+
+typedef struct
+{
+        spinlock_t         lock;       /* Used to block on state transitions */
+        au1xxx_power_dev_t *dev;       /* Power Managers device structure */
+        unsigned	   stopped;    /* USed to signaling device is stopped */
+} pm_state;
+#endif
+
+
+typedef struct
+{
+        u32                     tx_dev_id, rx_dev_id, target_dev_id;
+        u32                     tx_chan, rx_chan;
+        void                    *tx_desc_head, *rx_desc_head;
+        ide_hwif_t              *hwif;
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+        ide_drive_t             *drive;
+        u8                      white_list, black_list;
+        struct dbdma_cmd        *dma_table_cpu;
+        dma_addr_t              dma_table_dma;
+        struct scatterlist      *sg_table;
+        int                     sg_nents;
+        int                     sg_dma_direction;
+#endif
+        struct device           *dev;
+	int			irq;
+	u32			regbase;
+#ifdef CONFIG_PM
+        pm_state                pm;
+#endif
+} _auide_hwif;
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+struct drive_list_entry {
+        const char * id_model;
+        const char * id_firmware;
+};
+
+/* HD white list */
+static const struct drive_list_entry dma_white_list [] = {
+/*
+ * Hitachi
+ */
+        { "HITACHI_DK14FA-20"    ,       "ALL"           },
+        { "HTS726060M9AT00"      ,       "ALL"           },
+/*
+ * Maxtor
+ */
+        { "Maxtor 6E040L0"      ,       "ALL"           },
+        { "Maxtor 6Y080P0"      ,       "ALL"           },
+        { "Maxtor 6Y160P0"      ,       "ALL"           },
+/*
+ * Seagate
+ */
+        { "ST3120026A"          ,       "ALL"           },
+        { "ST320014A"           ,       "ALL"           },
+        { "ST94011A"            ,       "ALL"           },
+        { "ST340016A"           ,       "ALL"           },
+/*
+ * Western Digital
+ */
+        { "WDC WD400UE-00HCT0"  ,       "ALL"           },
+        { "WDC WD400JB-00JJC0"  ,       "ALL"           },
+        { NULL                  ,       NULL            }
+};
+
+/* HD black list */
+static const struct drive_list_entry dma_black_list [] = {
+/*
+ * Western Digital
+ */
+        { "WDC WD100EB-00CGH0"  ,       "ALL"           },
+        { "WDC WD200BB-00AUA1"  ,       "ALL"           },
+        { "WDC AC24300L"        ,       "ALL"           },
+        { NULL                  ,       NULL            }
+};
+#endif
+
+/* function prototyping */
+u8 auide_inb(unsigned long port);
+u16 auide_inw(unsigned long port);
+u32 auide_inl(unsigned long port);
+void auide_insw(unsigned long port, void *addr, u32 count);
+void auide_insl(unsigned long port, void *addr, u32 count);
+void auide_outb(u8 addr, unsigned long port);
+void auide_outbsync(ide_drive_t *drive, u8 addr, unsigned long port);
+void auide_outw(u16 addr, unsigned long port);
+void auide_outl(u32 addr, unsigned long port);
+void auide_outsw(unsigned long port, void *addr, u32 count);
+void auide_outsl(unsigned long port, void *addr, u32 count);
+static void auide_tune_drive(ide_drive_t *drive, byte pio);
+static int auide_tune_chipset (ide_drive_t *drive, u8 speed);
+static int auide_ddma_init( _auide_hwif *auide );
+static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif);
+int __init auide_probe(void);
+
+#ifdef CONFIG_PM
+        int au1200ide_pm_callback( au1xxx_power_dev_t *dev,
+                                   au1xxx_request_t request, void *data);
+        static int au1xxxide_pm_standby( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_sleep( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_resume( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_getstatus( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_access( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_idle( au1xxx_power_dev_t *dev );
+        static int au1xxxide_pm_cleanup( au1xxx_power_dev_t *dev );
+#endif
+
+
+/*
+ * 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);
+        static int auide_build_sglist(ide_drive_t *drive,  struct request *rq);
+        static int auide_build_dmatable(ide_drive_t *drive);
+        static int auide_dma_end(ide_drive_t *drive);
+        static void auide_dma_start(ide_drive_t *drive );
+        ide_startstop_t auide_dma_intr (ide_drive_t *drive);
+        static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command);
+        static int auide_dma_setup(ide_drive_t *drive);
+        static int auide_dma_check(ide_drive_t *drive);
+        static int auide_dma_test_irq(ide_drive_t *drive);
+        static int auide_dma_host_off(ide_drive_t *drive);
+        static int auide_dma_host_on(ide_drive_t *drive);
+        static int auide_dma_lostirq(ide_drive_t *drive);
+        static int auide_dma_on(ide_drive_t *drive);
+        static void auide_ddma_tx_callback(int irq, void *param,
+                                           struct pt_regs *regs);
+        static void auide_ddma_rx_callback(int irq, void *param,
+                                           struct pt_regs *regs);
+        static int auide_dma_off_quietly(ide_drive_t *drive);
+        static int auide_dma_timeout(ide_drive_t *drive);
+
+#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
+
+/*******************************************************************************
+* PIO Mode timing calculation :                                                *
+*                                                                              *
+* Static Bus Spec   ATA Spec                                                   *
+*      Tcsoe      =   t1                                                       *
+*      Toecs      =   t9                                                       *
+*      Twcs       =   t9                                                       *
+*      Tcsh       =   t2i | t2                                                 *
+*      Tcsoff     =   t2i | t2                                                 *
+*      Twp        =   t2                                                       *
+*      Tcsw       =   t1                                                       *
+*      Tpm        =   0                                                        *
+*      Ta         =   t1+t2                                                    *
+*******************************************************************************/
+
+#define TCSOE_MASK            (0x07<<29)
+#define TOECS_MASK            (0x07<<26)
+#define TWCS_MASK             (0x07<<28)
+#define TCSH_MASK             (0x0F<<24)
+#define TCSOFF_MASK           (0x07<<20)
+#define TWP_MASK              (0x3F<<14)
+#define TCSW_MASK             (0x0F<<10)
+#define TPM_MASK              (0x0F<<6)
+#define TA_MASK               (0x3F<<0)
+#define TS_MASK               (1<<8)
+
+/* Timing parameters PIO mode 0 */
+#define SBC_IDE_PIO0_TCSOE    (0x04<<29)
+#define SBC_IDE_PIO0_TOECS    (0x01<<26)
+#define SBC_IDE_PIO0_TWCS     (0x02<<28)
+#define SBC_IDE_PIO0_TCSH     (0x08<<24)
+#define SBC_IDE_PIO0_TCSOFF   (0x07<<20)
+#define SBC_IDE_PIO0_TWP      (0x10<<14)
+#define SBC_IDE_PIO0_TCSW     (0x04<<10)
+#define SBC_IDE_PIO0_TPM      (0x0<<6)
+#define SBC_IDE_PIO0_TA       (0x15<<0)
+/* Timing parameters PIO mode 1 */
+#define SBC_IDE_PIO1_TCSOE    (0x03<<29)
+#define SBC_IDE_PIO1_TOECS    (0x01<<26)
+#define SBC_IDE_PIO1_TWCS     (0x01<<28)
+#define SBC_IDE_PIO1_TCSH     (0x06<<24)
+#define SBC_IDE_PIO1_TCSOFF   (0x06<<20)
+#define SBC_IDE_PIO1_TWP      (0x08<<14)
+#define SBC_IDE_PIO1_TCSW     (0x03<<10)
+#define SBC_IDE_PIO1_TPM      (0x00<<6)
+#define SBC_IDE_PIO1_TA       (0x0B<<0)
+/* Timing parameters PIO mode 2 */
+#define SBC_IDE_PIO2_TCSOE    (0x05<<29)
+#define SBC_IDE_PIO2_TOECS    (0x01<<26)
+#define SBC_IDE_PIO2_TWCS     (0x01<<28)
+#define SBC_IDE_PIO2_TCSH     (0x07<<24)
+#define SBC_IDE_PIO2_TCSOFF   (0x07<<20)
+#define SBC_IDE_PIO2_TWP      (0x1F<<14)
+#define SBC_IDE_PIO2_TCSW     (0x05<<10)
+#define SBC_IDE_PIO2_TPM      (0x00<<6)
+#define SBC_IDE_PIO2_TA       (0x22<<0)
+/* Timing parameters PIO mode 3 */
+#define SBC_IDE_PIO3_TCSOE    (0x05<<29)
+#define SBC_IDE_PIO3_TOECS    (0x01<<26)
+#define SBC_IDE_PIO3_TWCS     (0x01<<28)
+#define SBC_IDE_PIO3_TCSH     (0x0D<<24)
+#define SBC_IDE_PIO3_TCSOFF   (0x0D<<20)
+#define SBC_IDE_PIO3_TWP      (0x15<<14)
+#define SBC_IDE_PIO3_TCSW     (0x05<<10)
+#define SBC_IDE_PIO3_TPM      (0x00<<6)
+#define SBC_IDE_PIO3_TA       (0x1A<<0)
+/* Timing parameters PIO mode 4 */
+#define SBC_IDE_PIO4_TCSOE    (0x04<<29)
+#define SBC_IDE_PIO4_TOECS    (0x01<<26)
+#define SBC_IDE_PIO4_TWCS     (0x01<<28)
+#define SBC_IDE_PIO4_TCSH     (0x04<<24)
+#define SBC_IDE_PIO4_TCSOFF   (0x04<<20)
+#define SBC_IDE_PIO4_TWP      (0x0D<<14)
+#define SBC_IDE_PIO4_TCSW     (0x03<<10)
+#define SBC_IDE_PIO4_TPM      (0x00<<6)
+#define SBC_IDE_PIO4_TA       (0x12<<0)
+/* Timing parameters MDMA mode 0 */
+#define SBC_IDE_MDMA0_TCSOE   (0x03<<29)
+#define SBC_IDE_MDMA0_TOECS   (0x01<<26)
+#define SBC_IDE_MDMA0_TWCS    (0x01<<28)
+#define SBC_IDE_MDMA0_TCSH    (0x07<<24)
+#define SBC_IDE_MDMA0_TCSOFF  (0x07<<20)
+#define SBC_IDE_MDMA0_TWP     (0x0C<<14)
+#define SBC_IDE_MDMA0_TCSW    (0x03<<10)
+#define SBC_IDE_MDMA0_TPM     (0x00<<6)
+#define SBC_IDE_MDMA0_TA      (0x0F<<0)
+/* Timing parameters MDMA mode 1 */
+#define SBC_IDE_MDMA1_TCSOE   (0x05<<29)
+#define SBC_IDE_MDMA1_TOECS   (0x01<<26)
+#define SBC_IDE_MDMA1_TWCS    (0x01<<28)
+#define SBC_IDE_MDMA1_TCSH    (0x05<<24)
+#define SBC_IDE_MDMA1_TCSOFF  (0x05<<20)
+#define SBC_IDE_MDMA1_TWP     (0x0F<<14)
+#define SBC_IDE_MDMA1_TCSW    (0x05<<10)
+#define SBC_IDE_MDMA1_TPM     (0x00<<6)
+#define SBC_IDE_MDMA1_TA      (0x15<<0)
+/* Timing parameters MDMA mode 2 */
+#define SBC_IDE_MDMA2_TCSOE   (0x04<<29)
+#define SBC_IDE_MDMA2_TOECS   (0x01<<26)
+#define SBC_IDE_MDMA2_TWCS    (0x01<<28)
+#define SBC_IDE_MDMA2_TCSH    (0x04<<24)
+#define SBC_IDE_MDMA2_TCSOFF  (0x04<<20)
+#define SBC_IDE_MDMA2_TWP     (0x0D<<14)
+#define SBC_IDE_MDMA2_TCSW    (0x04<<10)
+#define SBC_IDE_MDMA2_TPM     (0x00<<6)
+#define SBC_IDE_MDMA2_TA      (0x12<<0)
+
diff --git a/include/linux/ide.h b/include/linux/ide.h
index a6dbb51..3461abc 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -218,7 +218,7 @@ typedef enum {	ide_unknown,	ide_generic,	ide_pci,
 		ide_rz1000,	ide_trm290,
 		ide_cmd646,	ide_cy82c693,	ide_4drives,
 		ide_pmac,	ide_etrax100,	ide_acorn,
-		ide_forced
+		ide_au1xxx, ide_forced
 } hwif_chipset_t;
 
 /*