50 files changed, 914 insertions, 846 deletions

diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 4200251ff635..aa0e0c9f74c5 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -308,6 +308,14 @@ config IDE_GENERIC
         help
           If unsure, say N.
 
+config BLK_DEV_PLATFORM
+        tristate "Platform driver for IDE interfaces"
+        help
+          This is the platform IDE driver, used mostly for Memory Mapped
+          IDE devices, like Compact Flashes running in True IDE mode.
+
+          If unsure, say N.
+
 config BLK_DEV_CMD640
         bool "CMD640 chipset bugfix/support"
         depends on X86
@@ -351,17 +359,16 @@ config BLK_DEV_IDEPNP
           would like the kernel to automatically detect and activate
           it, say Y here.
 
+if PCI
+
+comment "PCI IDE chipsets support"
+
 config BLK_DEV_IDEPCI
-        bool "PCI IDE chipset support" if PCI
-        default BLK_DEV_IDEDMA_PMAC if PPC_PMAC && BLK_DEV_IDEDMA_PMAC
-        help
-          Say Y here for PCI systems which use IDE drive(s).
-          This option helps the IDE driver to automatically detect and
-          configure all PCI-based IDE interfaces in your system.
+        bool
 
 config IDEPCI_SHARE_IRQ
         bool "Sharing PCI IDE interrupts support"
-        depends on PCI && BLK_DEV_IDEPCI
+        depends on BLK_DEV_IDEPCI
         help
           Some ATA/IDE chipsets have hardware support which allows for
           sharing a single IRQ with other cards. To enable support for
@@ -371,11 +378,11 @@ config IDEPCI_SHARE_IRQ
           If unsure, say N.
 
 config IDEPCI_PCIBUS_ORDER
-        def_bool PCI && BLK_DEV_IDE=y && BLK_DEV_IDEPCI
+        def_bool BLK_DEV_IDE=y && BLK_DEV_IDEPCI
 
 config BLK_DEV_OFFBOARD
         bool "Boot off-board chipsets first support"
-        depends on PCI && BLK_DEV_IDEPCI
+        depends on BLK_DEV_IDEPCI
         help
           Normally, IDE controllers built into the motherboard (on-board
           controllers) are assigned to ide0 and ide1 while those on add-in PCI
@@ -398,21 +405,23 @@ config BLK_DEV_OFFBOARD
 
 config BLK_DEV_GENERIC
         tristate "Generic PCI IDE Chipset Support"
-        depends on BLK_DEV_IDEPCI
+        select BLK_DEV_IDEPCI
         help
           This option provides generic support for various PCI IDE Chipsets
           which otherwise might not be supported.
 
 config BLK_DEV_OPTI621
         tristate "OPTi 82C621 chipset enhanced support (EXPERIMENTAL)"
-        depends on PCI && BLK_DEV_IDEPCI && EXPERIMENTAL
+        depends on EXPERIMENTAL
+        select BLK_DEV_IDEPCI
         help
           This is a driver for the OPTi 82C621 EIDE controller.
           Please read the comments at the top of <file:drivers/ide/pci/opti621.c>.
 
 config BLK_DEV_RZ1000
         tristate "RZ1000 chipset bugfix/support"
-        depends on PCI && BLK_DEV_IDEPCI && X86
+        depends on X86
+        select BLK_DEV_IDEPCI
         help
           The PC-Technologies RZ1000 IDE chip is used on many common 486 and
           Pentium motherboards, usually along with the "Neptune" chipset.
@@ -423,35 +432,21 @@ config BLK_DEV_RZ1000
           things will operate 100% reliably.
 
 config BLK_DEV_IDEDMA_PCI
-        bool "Generic PCI bus-master DMA support"
-        depends on PCI && BLK_DEV_IDEPCI
-        ---help---
-          If your PCI system uses IDE drive(s) (as opposed to SCSI, say) and
-          is capable of bus-master DMA operation (most Pentium PCI systems),
-          you will want to say Y here to reduce CPU overhead. You can then use
-          the "hdparm" utility to enable DMA for drives for which it was not
-          enabled automatically. By default, DMA is not enabled automatically
-          for these drives, but you can change that by saying Y to the
-          following question "Use DMA by default when available". You can get
-          the latest version of the hdparm utility from
-          <ftp://ibiblio.org/pub/Linux/system/hardware/>.
-
-          Read the comments at the beginning of <file:drivers/ide/ide-dma.c>
-          and the file <file:Documentation/ide.txt> for more information.
-
-          It is safe to say Y to this question.
-
-if BLK_DEV_IDEDMA_PCI
+        bool
+        select BLK_DEV_IDEPCI
 
 config BLK_DEV_IDEDMA_FORCED
         bool "Force enable legacy 2.0.X HOSTS to use DMA"
+        depends on BLK_DEV_IDEDMA_PCI
         help
           This is an old piece of lost code from Linux 2.0 Kernels.
 
           Generally say N here.
 
+# TODO: remove it
 config IDEDMA_ONLYDISK
         bool "Enable DMA only for disks "
+        depends on BLK_DEV_IDEDMA_PCI
         help
           This is used if you know your ATAPI Devices are going to fail DMA
           Transfers.
@@ -460,6 +455,7 @@ config IDEDMA_ONLYDISK
 
 config BLK_DEV_AEC62XX
         tristate "AEC62XX chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds explicit support for Acard AEC62xx (Artop ATP8xx)
           IDE controllers. This allows the kernel to change PIO, DMA and UDMA
@@ -467,6 +463,7 @@ config BLK_DEV_AEC62XX
 
 config BLK_DEV_ALI15X3
         tristate "ALI M15x3 chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver ensures (U)DMA support for ALI 1533, 1543 and 1543C
           onboard chipsets.  It also tests for Simplex mode and enables
@@ -495,6 +492,7 @@ config WDC_ALI15X3
 
 config BLK_DEV_AMD74XX
         tristate "AMD and nVidia IDE support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds explicit support for AMD-7xx and AMD-8111 chips
           and also for the nVidia nForce chip.  This allows the kernel to
@@ -504,6 +502,7 @@ config BLK_DEV_AMD74XX
 config BLK_DEV_ATIIXP
         tristate "ATI IXP chipset IDE support"
         depends on X86
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds explicit support for ATI IXP chipset.
           This allows the kernel to change PIO, DMA and UDMA speeds
@@ -513,18 +512,21 @@ config BLK_DEV_ATIIXP
 
 config BLK_DEV_CMD64X
         tristate "CMD64{3|6|8|9} chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           Say Y here if you have an IDE controller which uses any of these
           chipsets: CMD643, CMD646, or CMD648.
 
 config BLK_DEV_TRIFLEX
         tristate "Compaq Triflex IDE support"
+        select BLK_DEV_IDEDMA_PCI
         help
           Say Y here if you have a Compaq Triflex IDE controller, such
           as those commonly found on Compaq Pentium-Pro systems
 
 config BLK_DEV_CY82C693
         tristate "CY82C693 chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds detection and support for the CY82C693 chipset
           used on Digital's PC-Alpha 164SX boards.
@@ -535,6 +537,7 @@ config BLK_DEV_CY82C693
 config BLK_DEV_CS5520
         tristate "Cyrix CS5510/20 MediaGX chipset support (VERY EXPERIMENTAL)"
         depends on EXPERIMENTAL
+        select BLK_DEV_IDEDMA_PCI
         help
           Include support for PIO tuning and virtual DMA on the Cyrix MediaGX
           5510/5520 chipset. This will automatically be detected and
@@ -544,6 +547,7 @@ config BLK_DEV_CS5520
 
 config BLK_DEV_CS5530
         tristate "Cyrix/National Semiconductor CS5530 MediaGX chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           Include support for UDMA on the Cyrix MediaGX 5530 chipset. This
           will automatically be detected and configured if found.
@@ -553,6 +557,7 @@ config BLK_DEV_CS5530
 config BLK_DEV_CS5535
         tristate "AMD CS5535 chipset support"
         depends on X86 && !X86_64
+        select BLK_DEV_IDEDMA_PCI
         help
           Include support for UDMA on the NSC/AMD CS5535 companion chipset.
           This will automatically be detected and configured if found.
@@ -561,6 +566,7 @@ config BLK_DEV_CS5535
 
 config BLK_DEV_HPT34X
         tristate "HPT34X chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds up to 4 more EIDE devices sharing a single
           interrupt. The HPT343 chipset in its current form is a non-bootable
@@ -581,7 +587,8 @@ config HPT34X_AUTODMA
 
 config BLK_DEV_HPT366
         tristate "HPT36X/37X chipset support"
-        ---help---
+        select BLK_DEV_IDEDMA_PCI
+        help
           HPT366 is an Ultra DMA chipset for ATA-66.
           HPT368 is an Ultra DMA chipset for ATA-66 RAID Based.
           HPT370 is an Ultra DMA chipset for ATA-100.
@@ -605,18 +612,21 @@ config BLK_DEV_HPT366
 
 config BLK_DEV_JMICRON
         tristate "JMicron JMB36x support"
+        select BLK_DEV_IDEDMA_PCI
         help
           Basic support for the JMicron ATA controllers. For full support
           use the libata drivers.
 
 config BLK_DEV_SC1200
         tristate "National SCx200 chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds support for the built in IDE on the National
           SCx200 series of embedded x86 "Geode" systems
 
 config BLK_DEV_PIIX
         tristate "Intel PIIXn chipsets support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds explicit support for Intel PIIX and ICH chips
           and also for the Efar Victory66 (slc90e66) chip.  This allows
@@ -625,17 +635,20 @@ config BLK_DEV_PIIX
 
 config BLK_DEV_IT8213
         tristate "IT8213 IDE support"
+        select BLK_DEV_IDEDMA_PCI
         help
          This driver adds support for the ITE 8213 IDE controller.
 
 config BLK_DEV_IT821X
         tristate "IT821X IDE support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds support for the ITE 8211 IDE controller and the
           IT 8212 IDE RAID controller in both RAID and pass-through mode.
 
 config BLK_DEV_NS87415
         tristate "NS87415 chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds detection and support for the NS87415 chip
           (used mainly on SPARC64 and PA-RISC machines).
@@ -644,6 +657,7 @@ config BLK_DEV_NS87415
 
 config BLK_DEV_PDC202XX_OLD
         tristate "PROMISE PDC202{46|62|65|67} support"
+        select BLK_DEV_IDEDMA_PCI
         help
           Promise Ultra33 or PDC20246
           Promise Ultra66 or PDC20262
@@ -685,9 +699,11 @@ config PDC202XX_BURST
 
 config BLK_DEV_PDC202XX_NEW
         tristate "PROMISE PDC202{68|69|70|71|75|76|77} support"
+        select BLK_DEV_IDEDMA_PCI
 
 config BLK_DEV_SVWKS
         tristate "ServerWorks OSB4/CSB5/CSB6 chipsets support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds PIO/(U)DMA support for the ServerWorks OSB4/CSB5
           chipsets.
@@ -696,6 +712,7 @@ config BLK_DEV_SGIIOC4
         tristate "Silicon Graphics IOC4 chipset ATA/ATAPI support"
         depends on (IA64_SGI_SN2 || IA64_GENERIC) && SGI_IOC4
         select IDEPCI_SHARE_IRQ
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds PIO & MultiMode DMA-2 support for the SGI IOC4
           chipset, which has one channel and can support two devices.
@@ -703,6 +720,7 @@ config BLK_DEV_SGIIOC4
 
 config BLK_DEV_SIIMAGE
         tristate "Silicon Image chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds PIO/(U)DMA support for the SI CMD680 and SII
           3112 (Serial ATA) chips.
@@ -710,7 +728,8 @@ config BLK_DEV_SIIMAGE
 config BLK_DEV_SIS5513
         tristate "SiS5513 chipset support"
         depends on X86
-        ---help---
+        select BLK_DEV_IDEDMA_PCI
+        help
           This driver ensures (U)DMA support for SIS5513 chipset family based
           mainboards.
 
@@ -729,6 +748,7 @@ config BLK_DEV_SIS5513
 config BLK_DEV_SL82C105
         tristate "Winbond SL82c105 support"
         depends on (PPC || ARM)
+        select BLK_DEV_IDEDMA_PCI
         help
           If you have a Winbond SL82c105 IDE controller, say Y here to enable
           special configuration for this chip. This is common on various CHRP
@@ -736,6 +756,7 @@ config BLK_DEV_SL82C105
 
 config BLK_DEV_SLC90E66
         tristate "SLC90E66 chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver ensures (U)DMA support for Victory66 SouthBridges for
           SMsC with Intel NorthBridges.  This is an Ultra66 based chipset.
@@ -751,6 +772,7 @@ config BLK_DEV_SLC90E66
 
 config BLK_DEV_TRM290
         tristate "Tekram TRM290 chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds support for bus master DMA transfers
           using the Tekram TRM290 PCI IDE chip. Volunteers are
@@ -759,6 +781,7 @@ config BLK_DEV_TRM290
 
 config BLK_DEV_VIA82CXXX
         tristate "VIA82CXXX chipset support"
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver adds explicit support for VIA BusMastering IDE chips.
           This allows the kernel to change PIO, DMA and UDMA speeds and to
@@ -766,12 +789,14 @@ config BLK_DEV_VIA82CXXX
 
 config BLK_DEV_TC86C001
         tristate "Toshiba TC86C001 support"
+        select BLK_DEV_IDEDMA_PCI
         help
         This driver adds support for Toshiba TC86C001 GOKU-S chip.
 
 config BLK_DEV_CELLEB
         tristate "Toshiba's Cell Reference Set IDE support"
         depends on PPC_CELLEB
+        select BLK_DEV_IDEDMA_PCI
         help
           This driver provides support for the built-in IDE controller on
           Toshiba Cell Reference Board.
@@ -985,24 +1010,9 @@ config IDE_EXT_DIRECT
 endchoice
 
 # no isa -> no vlb
-config IDE_CHIPSETS
-        bool "Other IDE chipset support"
-        depends on ISA
-        ---help---
-          Say Y here if you want to include enhanced support for various IDE
-          interface chipsets used on motherboards and add-on cards. You can
-          then pick your particular IDE chip from among the following options.
-          This enhanced support may be necessary for Linux to be able to
-          access the 3rd/4th drives in some systems. It may also enable
-          setting of higher speed I/O rates to improve system performance with
-          these chipsets. Most of these also require special kernel boot
-          parameters to actually turn on the support at runtime; you can find
-          a list of these in the file <file:Documentation/ide.txt>.
-
-          People with SCSI-only systems can say N here.
-
-if IDE_CHIPSETS
+if ISA
 
+comment "Other IDE chipsets support"
 comment "Note: most of these also require special kernel boot parameters"
 
 config BLK_DEV_4DRIVES
diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index 8a9b98fcb66d..7912a471f10d 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -248,15 +248,9 @@ static void icside_build_sglist(ide_drive_t *drive, struct request *rq)
  *      MW1     80      50      50      150     C
  *      MW2     70      25      25      120     C
  */
-static int icside_set_speed(ide_drive_t *drive, u8 xfer_mode)
+static int icside_set_speed(ide_drive_t *drive, const u8 xfer_mode)
 {
-        int on = 0, cycle_time = 0, use_dma_info = 0;
-
-        /*
-         * Limit the transfer speed to MW_DMA_2.
-         */
-        if (xfer_mode > XFER_MW_DMA_2)
-                xfer_mode = XFER_MW_DMA_2;
+        int cycle_time, use_dma_info = 0;
 
         switch (xfer_mode) {
         case XFER_MW_DMA_2:
@@ -278,6 +272,8 @@ static int icside_set_speed(ide_drive_t *drive, u8 xfer_mode)
         case XFER_SW_DMA_0:
                 cycle_time = 480;
                 break;
+        default:
+                return 1;
         }
 
         /*
@@ -289,17 +285,10 @@ static int icside_set_speed(ide_drive_t *drive, u8 xfer_mode)
 
         drive->drive_data = cycle_time;
 
-        if (cycle_time && ide_config_drive_speed(drive, xfer_mode) == 0)
-                on = 1;
-        else
-                drive->drive_data = 480;
-
         printk("%s: %s selected (peak %dMB/s)\n", drive->name,
                 ide_xfer_verbose(xfer_mode), 2000 / drive->drive_data);
 
-        drive->current_speed = xfer_mode;
-
-        return on;
+        return ide_config_drive_speed(drive, xfer_mode);
 }
 
 static void icside_dma_host_off(ide_drive_t *drive)
@@ -326,8 +315,7 @@ static int icside_dma_check(ide_drive_t *drive)
 {
         struct hd_driveid *id = drive->id;
         ide_hwif_t *hwif = HWIF(drive);
-        int xfer_mode = XFER_PIO_2;
-        int on;
+        int xfer_mode = 0;
 
         if (!(id->capability & 1) || !hwif->autodma)
                 goto out;
@@ -356,9 +344,10 @@ static int icside_dma_check(ide_drive_t *drive)
         }
 
 out:
-        on = icside_set_speed(drive, xfer_mode);
+        if (xfer_mode == 0)
+                return -1;
 
-        return on ? 0 : -1;
+        return icside_set_speed(drive, xfer_mode) ? -1 : 0;
 }
 
 static int icside_dma_end(ide_drive_t *drive)
diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index 04636f7eaae7..4bb42b30bfc0 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -680,12 +680,10 @@ static void cris_dma_off(ide_drive_t *drive)
 {
 }
 
-static void tune_cris_ide(ide_drive_t *drive, u8 pio)
+static void cris_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         int setup, strobe, hold;
 
-        pio = ide_get_best_pio_mode(drive, pio, 4);
-
         switch(pio)
         {
                 case 0:
@@ -722,15 +720,10 @@ static void tune_cris_ide(ide_drive_t *drive, u8 pio)
         (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
-static int speed_cris_ide(ide_drive_t *drive, u8 speed)
+static int speed_cris_ide(ide_drive_t *drive, const u8 speed)
 {
         int cyc = 0, dvs = 0, strobe = 0, hold = 0;
 
-        if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
-                tune_cris_ide(drive, speed - XFER_PIO_0);
-                return ide_config_drive_speed(drive, speed);
-        }
-
         switch(speed)
         {
                 case XFER_UDMA_0:
@@ -797,7 +790,7 @@ init_e100_ide (void)
                 ide_register_hw(&hw, 1, &hwif);
                 hwif->mmio = 1;
                 hwif->chipset = ide_etrax100;
-                hwif->tuneproc = &tune_cris_ide;
+                hwif->set_pio_mode = &cris_set_pio_mode;
                 hwif->speedproc = &speed_cris_ide;
                 hwif->ata_input_data = &cris_ide_input_data;
                 hwif->ata_output_data = &cris_ide_output_data;
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index 17aea65d7dd2..6bff81a58bf3 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -612,6 +612,46 @@ void ide_acpi_push_timing(ide_hwif_t *hwif)
 EXPORT_SYMBOL_GPL(ide_acpi_push_timing);
 
 /**
+ * ide_acpi_set_state - set the channel power state
+ * @hwif: target IDE interface
+ * @on: state, on/off
+ *
+ * This function executes the _PS0/_PS3 ACPI method to set the power state.
+ * ACPI spec requires _PS0 when IDE power on and _PS3 when power off
+ */
+void ide_acpi_set_state(ide_hwif_t *hwif, int on)
+{
+        int unit;
+
+        if (ide_noacpi)
+                return;
+
+        DEBPRINT("ENTER:\n");
+
+        if (!hwif->acpidata) {
+                DEBPRINT("no ACPI data for %s\n", hwif->name);
+                return;
+        }
+        /* channel first and then drives for power on and verse versa for power off */
+        if (on)
+                acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);
+        for (unit = 0; unit < MAX_DRIVES; ++unit) {
+                ide_drive_t *drive = &hwif->drives[unit];
+
+                if (!drive->acpidata->obj_handle)
+                        drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive);
+
+                if (drive->acpidata->obj_handle && drive->present) {
+                        acpi_bus_set_power(drive->acpidata->obj_handle,
+                                on? ACPI_STATE_D0: ACPI_STATE_D3);
+                }
+        }
+        if (!on)
+                acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D3);
+}
+EXPORT_SYMBOL_GPL(ide_acpi_set_state);
+
+/**
  * ide_acpi_init - initialize the ACPI link for an IDE interface
  * @hwif: target IDE interface (channel)
  *
@@ -679,6 +719,8 @@ void ide_acpi_init(ide_hwif_t *hwif)
                 return;
         }
 
+        /* ACPI _PS0 before _STM */
+        ide_acpi_set_state(hwif, 1);
         /*
          * ACPI requires us to call _STM on startup
          */
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index ff644a5e12cd..6000c08f51ba 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -653,7 +653,7 @@ static const u8 xfer_mode_bases[] = {
         XFER_SW_DMA_0,
 };
 
-static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base)
+static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode)
 {
         struct hd_driveid *id = drive->id;
         ide_hwif_t *hwif = drive->hwif;
@@ -664,17 +664,28 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base)
                 if ((id->field_valid & 4) == 0)
                         break;
 
-                mask = id->dma_ultra & hwif->ultra_mask;
-
                 if (hwif->udma_filter)
-                        mask &= hwif->udma_filter(drive);
+                        mask = hwif->udma_filter(drive);
+                else
+                        mask = hwif->ultra_mask;
+                mask &= id->dma_ultra;
 
-                if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
-                        mask &= 0x07;
+                /*
+                 * avoid false cable warning from eighty_ninty_three()
+                 */
+                if (req_mode > XFER_UDMA_2) {
+                        if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
+                                mask &= 0x07;
+                }
                 break;
         case XFER_MW_DMA_0:
-                if (id->field_valid & 2)
-                        mask = id->dma_mword & hwif->mwdma_mask;
+                if ((id->field_valid & 2) == 0)
+                        break;
+                if (hwif->mdma_filter)
+                        mask = hwif->mdma_filter(drive);
+                else
+                        mask = hwif->mwdma_mask;
+                mask &= id->dma_mword;
                 break;
         case XFER_SW_DMA_0:
                 if (id->field_valid & 2) {
@@ -703,15 +714,18 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base)
 }
 
 /**
- *      ide_max_dma_mode        -       compute DMA speed
+ *      ide_find_dma_mode       -       compute DMA speed
  *      @drive: IDE device
+ *      @req_mode: requested mode
+ *
+ *      Checks the drive/host capabilities and finds the speed to use for
+ *      the DMA transfer.  The speed is then limited by the requested mode.
  *
- *      Checks the drive capabilities and returns the speed to use
- *      for the DMA transfer.  Returns 0 if the drive is incapable
- *      of DMA transfers.
+ *      Returns 0 if the drive/host combination is incapable of DMA transfers
+ *      or if the requested mode is not a DMA mode.
  */
 
-u8 ide_max_dma_mode(ide_drive_t *drive)
+u8 ide_find_dma_mode(ide_drive_t *drive, u8 req_mode)
 {
         ide_hwif_t *hwif = drive->hwif;
         unsigned int mask;
@@ -722,7 +736,9 @@ u8 ide_max_dma_mode(ide_drive_t *drive)
                 return 0;
 
         for (i = 0; i < ARRAY_SIZE(xfer_mode_bases); i++) {
-                mask = ide_get_mode_mask(drive, xfer_mode_bases[i]);
+                if (req_mode < xfer_mode_bases[i])
+                        continue;
+                mask = ide_get_mode_mask(drive, xfer_mode_bases[i], req_mode);
                 x = fls(mask) - 1;
                 if (x >= 0) {
                         mode = xfer_mode_bases[i] + x;
@@ -732,10 +748,10 @@ u8 ide_max_dma_mode(ide_drive_t *drive)
 
         printk(KERN_DEBUG "%s: selected mode 0x%x\n", drive->name, mode);
 
-        return mode;
+        return min(mode, req_mode);
 }
 
-EXPORT_SYMBOL_GPL(ide_max_dma_mode);
+EXPORT_SYMBOL_GPL(ide_find_dma_mode);
 
 int ide_tune_dma(ide_drive_t *drive)
 {
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index aa9f5f0b1e67..9560a8f4a86c 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -201,8 +201,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
                 return do_rw_taskfile(drive, args);
 
         case idedisk_pm_restore_pio:    /* Resume step 1 (restore PIO) */
-                if (drive->hwif->tuneproc != NULL)
-                        drive->hwif->tuneproc(drive, 255);
+                ide_set_max_pio(drive);
                 /*
                  * skip idedisk_pm_idle for ATAPI devices
                  */
@@ -788,6 +787,30 @@ static ide_startstop_t ide_disk_special(ide_drive_t *drive)
         return ide_started;
 }
 
+/*
+ * handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
+ */
+static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
+{
+        switch (req_pio) {
+        case 202:
+        case 201:
+        case 200:
+        case 102:
+        case 101:
+        case 100:
+                return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
+        case 9:
+        case 8:
+                return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
+        case 7:
+        case 6:
+                return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
+        default:
+                return 0;
+        }
+}
+
 /**
  *      do_special              -       issue some special commands
  *      @drive: drive the command is for
@@ -805,9 +828,17 @@ static ide_startstop_t do_special (ide_drive_t *drive)
         printk("%s: do_special: 0x%02x\n", drive->name, s->all);
 #endif
         if (s->b.set_tune) {
+                ide_hwif_t *hwif = drive->hwif;
+                u8 req_pio = drive->tune_req;
+
                 s->b.set_tune = 0;
-                if (HWIF(drive)->tuneproc != NULL)
-                        HWIF(drive)->tuneproc(drive, drive->tune_req);
+
+                if (set_pio_mode_abuse(drive->hwif, req_pio)) {
+                        if (hwif->set_pio_mode)
+                                hwif->set_pio_mode(drive, req_pio);
+                } else
+                        ide_set_pio(drive, req_pio);
+
                 return ide_stopped;
         } else {
                 if (drive->media == ide_disk)
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 646a54e233d3..cf0678b61161 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -780,12 +780,6 @@ int ide_driveid_update (ide_drive_t *drive)
 
 /*
  * Similar to ide_wait_stat(), except it never calls ide_error internally.
- * This is a kludge to handle the new ide_config_drive_speed() function,
- * and should not otherwise be used anywhere.  Eventually, the tuneproc's
- * should be updated to return ide_startstop_t, in which case we can get
- * rid of this abomination again.  :)   -ml
- *
- * It is gone..........
  *
  * const char *msg == consider adding for verbose errors.
  */
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 92a6c7bcf527..d97390c0543b 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -76,41 +76,26 @@ EXPORT_SYMBOL(ide_xfer_verbose);
  *      Given the available transfer modes this function returns
  *      the best available speed at or below the speed requested.
  *
- *      FIXME: filter also PIO/SWDMA/MWDMA modes
+ *      TODO: check device PIO capabilities
  */
 
-u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
+static u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
 {
-#ifdef CONFIG_BLK_DEV_IDEDMA
         ide_hwif_t *hwif = drive->hwif;
-        u8 mask = hwif->ultra_mask, mode = XFER_MW_DMA_2;
+        u8 mode = ide_find_dma_mode(drive, speed);
 
-        if (hwif->udma_filter)
-                mask = hwif->udma_filter(drive);
-
-        /*
-         * TODO: speed > XFER_UDMA_2 extra check is needed to avoid false
-         * cable warning from eighty_ninty_three(), moving ide_rate_filter()
-         * calls from ->speedproc to core code will make this hack go away
-         */
-        if (speed > XFER_UDMA_2) {
-                if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
-                        mask &= 0x07;
+        if (mode == 0) {
+                if (hwif->pio_mask)
+                        mode = fls(hwif->pio_mask) - 1 + XFER_PIO_0;
+                else
+                        mode = XFER_PIO_4;
         }
 
-        if (mask)
-                mode = fls(mask) - 1 + XFER_UDMA_0;
-
 //      printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed);
 
         return min(speed, mode);
-#else /* !CONFIG_BLK_DEV_IDEDMA */
-        return min(speed, (u8)XFER_PIO_4);
-#endif /* CONFIG_BLK_DEV_IDEDMA */
 }
 
-EXPORT_SYMBOL(ide_rate_filter);
-
 int ide_use_fast_pio(ide_drive_t *drive)
 {
         struct hd_driveid *id = drive->id;
@@ -340,6 +325,35 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
 
 EXPORT_SYMBOL_GPL(ide_get_best_pio_mode);
 
+/* req_pio == "255" for auto-tune */
+void ide_set_pio(ide_drive_t *drive, u8 req_pio)
+{
+        ide_hwif_t *hwif = drive->hwif;
+        u8 host_pio, pio;
+
+        if (hwif->set_pio_mode == NULL)
+                return;
+
+        BUG_ON(hwif->pio_mask == 0x00);
+
+        host_pio = fls(hwif->pio_mask) - 1;
+
+        pio = ide_get_best_pio_mode(drive, req_pio, host_pio);
+
+        /*
+         * TODO:
+         * - report device max PIO mode
+         * - check req_pio != 255 against device max PIO mode
+         */
+        printk(KERN_DEBUG "%s: host max PIO%d wanted PIO%d%s selected PIO%d\n",
+                          drive->name, host_pio, req_pio,
+                          req_pio == 255 ? "(auto-tune)" : "", pio);
+
+        hwif->set_pio_mode(drive, pio);
+}
+
+EXPORT_SYMBOL_GPL(ide_set_pio);
+
 /**
  *      ide_toggle_bounce       -       handle bounce buffering
  *      @drive: drive to update
@@ -377,13 +391,26 @@ void ide_toggle_bounce(ide_drive_t *drive, int on)
  
 int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
 {
-#ifndef CONFIG_BLK_DEV_IDEDMA
-        rate = min(rate, (u8) XFER_PIO_4);
-#endif
-        if(HWIF(drive)->speedproc)
-                return HWIF(drive)->speedproc(drive, rate);
-        else
+        ide_hwif_t *hwif = drive->hwif;
+
+        if (hwif->speedproc == NULL)
                 return -1;
+
+        rate = ide_rate_filter(drive, rate);
+
+        if (rate >= XFER_PIO_0 && rate <= XFER_PIO_5) {
+                if (hwif->set_pio_mode)
+                        hwif->set_pio_mode(drive, rate - XFER_PIO_0);
+
+                /*
+                 * FIXME: this is incorrect to return zero here but
+                 * since all users of ide_set_xfer_rate() ignore
+                 * the return value it is not a problem currently
+                 */
+                return 0;
+        }
+
+        return hwif->speedproc(drive, rate);
 }
 
 static void ide_dump_opcode(ide_drive_t *drive)
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 3a2a9a338fd9..b4c9f63a3854 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -827,10 +827,8 @@ static void probe_hwif(ide_hwif_t *hwif, void (*fixup)(ide_hwif_t *hwif))
                 ide_drive_t *drive = &hwif->drives[unit];
 
                 if (drive->present) {
-                        if (hwif->tuneproc != NULL && 
-                                drive->autotune == IDE_TUNE_AUTO)
-                                /* auto-tune PIO mode */
-                                hwif->tuneproc(drive, 255);
+                        if (drive->autotune == IDE_TUNE_AUTO)
+                                ide_set_max_pio(drive);
 
                         if (drive->autotune != IDE_TUNE_DEFAULT &&
                             drive->autotune != IDE_TUNE_AUTO)
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 5e88a060df06..e96212ce5729 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -396,8 +396,9 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
         hwif->cds                       = tmp_hwif->cds;
 #endif
 
-        hwif->tuneproc                  = tmp_hwif->tuneproc;
+        hwif->set_pio_mode              = tmp_hwif->set_pio_mode;
         hwif->speedproc                 = tmp_hwif->speedproc;
+        hwif->mdma_filter               = tmp_hwif->mdma_filter;
         hwif->udma_filter               = tmp_hwif->udma_filter;
         hwif->selectproc                = tmp_hwif->selectproc;
         hwif->reset_poll                = tmp_hwif->reset_poll;
@@ -866,8 +867,9 @@ int set_pio_mode(ide_drive_t *drive, int arg)
         if (arg < 0 || arg > 255)
                 return -EINVAL;
 
-        if (!HWIF(drive)->tuneproc)
+        if (drive->hwif->set_pio_mode == NULL)
                 return -ENOSYS;
+
         if (drive->special.b.set_tune)
                 return -EBUSY;
         ide_init_drive_cmd(&rq);
@@ -914,6 +916,7 @@ static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
         struct request rq;
         struct request_pm_state rqpm;
         ide_task_t args;
+        int ret;
 
         /* Call ACPI _GTM only once */
         if (!(drive->dn % 2))
@@ -930,7 +933,14 @@ static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
                 mesg.event = PM_EVENT_FREEZE;
         rqpm.pm_state = mesg.event;
 
-        return ide_do_drive_cmd(drive, &rq, ide_wait);
+        ret = ide_do_drive_cmd(drive, &rq, ide_wait);
+        /* only call ACPI _PS3 after both drivers are suspended */
+        if (!ret && (((drive->dn % 2) && hwif->drives[0].present
+                 && hwif->drives[1].present)
+                 || !hwif->drives[0].present
+                 || !hwif->drives[1].present))
+                ide_acpi_set_state(hwif, 0);
+        return ret;
 }
 
 static int generic_ide_resume(struct device *dev)
@@ -943,8 +953,10 @@ static int generic_ide_resume(struct device *dev)
         int err;
 
         /* Call ACPI _STM only once */
-        if (!(drive->dn % 2))
+        if (!(drive->dn % 2)) {
+                ide_acpi_set_state(hwif, 1);
                 ide_acpi_push_timing(hwif);
+        }
 
         ide_acpi_exec_tfs(drive);
 
diff --git a/drivers/ide/legacy/Makefile b/drivers/ide/legacy/Makefile
index c7971061767e..409822349f10 100644
--- a/drivers/ide/legacy/Makefile
+++ b/drivers/ide/legacy/Makefile
@@ -7,6 +7,8 @@ obj-$(CONFIG_BLK_DEV_UMC8672)		+= umc8672.o
 
 obj-$(CONFIG_BLK_DEV_IDECS)             += ide-cs.o
 
+obj-$(CONFIG_BLK_DEV_PLATFORM)          += ide_platform.o
+
 # Last of all
 obj-$(CONFIG_BLK_DEV_HD)                += hd.o
 
diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c
index 9b9c4761cb7d..2f0ef9b44033 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -68,8 +68,6 @@ static RegInitializer initData[] __initdata = {
         {0x35, 0x03}, {0x00, 0x00}
 };
 
-#define ALI_MAX_PIO 4
-
 /* timing parameter registers for each drive */
 static struct { u8 reg1, reg2, reg3, reg4; } regTab[4] = {
         {0x03, 0x26, 0x04, 0x27},     /* drive 0 */
@@ -109,7 +107,7 @@ static void outReg (u8 data, u8 reg)
  * This function computes timing parameters
  * and sets controller registers accordingly.
  */
-static void ali14xx_tune_drive (ide_drive_t *drive, u8 pio)
+static void ali14xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         int driveNum;
         int time1, time2;
@@ -117,8 +115,6 @@ static void ali14xx_tune_drive (ide_drive_t *drive, u8 pio)
         unsigned long flags;
         int bus_speed = system_bus_clock();
 
-        pio = ide_get_best_pio_mode(drive, pio, ALI_MAX_PIO);
-
         /* calculate timing, according to PIO mode */
         time1 = ide_pio_cycle_time(drive, pio);
         time2 = ide_pio_timings[pio].active_time;
@@ -212,12 +208,12 @@ static int __init ali14xx_probe(void)
 
         hwif->chipset = ide_ali14xx;
         hwif->pio_mask = ATA_PIO4;
-        hwif->tuneproc = &ali14xx_tune_drive;
+        hwif->set_pio_mode = &ali14xx_set_pio_mode;
         hwif->mate = mate;
 
         mate->chipset = ide_ali14xx;
         mate->pio_mask = ATA_PIO4;
-        mate->tuneproc = &ali14xx_tune_drive;
+        mate->set_pio_mode = &ali14xx_set_pio_mode;
         mate->mate = hwif;
         mate->channel = 1;
 
diff --git a/drivers/ide/legacy/dtc2278.c b/drivers/ide/legacy/dtc2278.c
index 6c01d951d074..f16521254867 100644
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -67,12 +67,10 @@ static void sub22 (char b, char c)
         }
 }
 
-static void tune_dtc2278 (ide_drive_t *drive, u8 pio)
+static void dtc2278_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         unsigned long flags;
 
-        pio = ide_get_best_pio_mode(drive, pio, 4);
-
         if (pio >= 3) {
                 spin_lock_irqsave(&ide_lock, flags);
                 /*
@@ -124,7 +122,7 @@ static int __init dtc2278_probe(void)
         hwif->serialized = 1;
         hwif->chipset = ide_dtc2278;
         hwif->pio_mask = ATA_PIO4;
-        hwif->tuneproc = &tune_dtc2278;
+        hwif->set_pio_mode = &dtc2278_set_pio_mode;
         hwif->drives[0].no_unmask = 1;
         hwif->drives[1].no_unmask = 1;
         hwif->mate = mate;
diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/legacy/ht6560b.c
index bfaa2025173b..2e5a9cc5c0f7 100644
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -199,7 +199,7 @@ static int __init try_to_init_ht6560b(void)
         return 1;
 }
 
-static u8 ht_pio2timings(ide_drive_t *drive, u8 pio)
+static u8 ht_pio2timings(ide_drive_t *drive, const u8 pio)
 {
         int active_time, recovery_time;
         int active_cycles, recovery_cycles;
@@ -208,7 +208,6 @@ static u8 ht_pio2timings(ide_drive_t *drive, u8 pio)
         if (pio) {
                 unsigned int cycle_time;
 
-                pio = ide_get_best_pio_mode(drive, pio, 5);
                 cycle_time = ide_pio_cycle_time(drive, pio);
 
                 /*
@@ -277,7 +276,7 @@ static void ht_set_prefetch(ide_drive_t *drive, u8 state)
 #endif
 }
 
-static void tune_ht6560b (ide_drive_t *drive, u8 pio)
+static void ht6560b_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         unsigned long flags;
         u8 timing;
@@ -333,15 +332,17 @@ int __init ht6560b_init(void)
 
         hwif->chipset = ide_ht6560b;
         hwif->selectproc = &ht6560b_selectproc;
+        hwif->host_flags = IDE_HFLAG_ABUSE_PREFETCH;
         hwif->pio_mask = ATA_PIO5;
-        hwif->tuneproc = &tune_ht6560b;
+        hwif->set_pio_mode = &ht6560b_set_pio_mode;
         hwif->serialized = 1;   /* is this needed? */
         hwif->mate = mate;
 
         mate->chipset = ide_ht6560b;
         mate->selectproc = &ht6560b_selectproc;
+        mate->host_flags = IDE_HFLAG_ABUSE_PREFETCH;
         mate->pio_mask = ATA_PIO5;
-        mate->tuneproc = &tune_ht6560b;
+        mate->set_pio_mode = &ht6560b_set_pio_mode;
         mate->serialized = 1;   /* is this needed? */
         mate->mate = hwif;
         mate->channel = 1;
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/legacy/ide_platform.c
new file mode 100644
index 000000000000..ccfb9893a467
--- /dev/null
+++ b/drivers/ide/legacy/ide_platform.c
@@ -0,0 +1,182 @@
+/*
+ * Platform IDE driver
+ *
+ * Copyright (C) 2007 MontaVista Software
+ *
+ * Maintainer: Kumar Gala <galak@kernel.crashing.org>
+ *
+ * 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.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/ide.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/pata_platform.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+static struct {
+        void __iomem *plat_ide_mapbase;
+        void __iomem *plat_ide_alt_mapbase;
+        ide_hwif_t *hwif;
+        int index;
+} hwif_prop;
+
+static ide_hwif_t *__devinit plat_ide_locate_hwif(void __iomem *base,
+            void __iomem *ctrl, struct pata_platform_info *pdata, int irq,
+            int mmio)
+{
+        unsigned long port = (unsigned long)base;
+        ide_hwif_t *hwif;
+        int index, i;
+
+        for (index = 0; index < MAX_HWIFS; ++index) {
+                hwif = ide_hwifs + index;
+                if (hwif->io_ports[IDE_DATA_OFFSET] == port)
+                        goto found;
+        }
+
+        for (index = 0; index < MAX_HWIFS; ++index) {
+                hwif = ide_hwifs + index;
+                if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
+                        goto found;
+        }
+
+        return NULL;
+
+found:
+
+        hwif->hw.io_ports[IDE_DATA_OFFSET] = port;
+
+        port += (1 << pdata->ioport_shift);
+        for (i = IDE_ERROR_OFFSET; i <= IDE_STATUS_OFFSET;
+             i++, port += (1 << pdata->ioport_shift))
+                hwif->hw.io_ports[i] = port;
+
+        hwif->hw.io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
+
+        memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
+        hwif->hw.irq = hwif->irq = irq;
+
+        hwif->hw.dma = NO_DMA;
+        hwif->hw.chipset = ide_generic;
+
+        if (mmio) {
+                hwif->mmio = 1;
+                default_hwif_mmiops(hwif);
+        }
+
+        hwif_prop.hwif = hwif;
+        hwif_prop.index = index;
+
+        return hwif;
+}
+
+static int __devinit plat_ide_probe(struct platform_device *pdev)
+{
+        struct resource *res_base, *res_alt, *res_irq;
+        ide_hwif_t *hwif;
+        struct pata_platform_info *pdata;
+        int ret = 0;
+        int mmio = 0;
+
+        pdata = pdev->dev.platform_data;
+
+        /* get a pointer to the register memory */
+        res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);
+        res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1);
+
+        if (!res_base || !res_alt) {
+                res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+                res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+                if (!res_base || !res_alt) {
+                        ret = -ENOMEM;
+                        goto out;
+                }
+                mmio = 1;
+        }
+
+        res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        if (!res_irq) {
+                ret = -EINVAL;
+                goto out;
+        }
+
+        if (mmio) {
+                hwif_prop.plat_ide_mapbase = devm_ioremap(&pdev->dev,
+                        res_base->start, res_base->end - res_base->start + 1);
+                hwif_prop.plat_ide_alt_mapbase = devm_ioremap(&pdev->dev,
+                        res_alt->start, res_alt->end - res_alt->start + 1);
+        } else {
+                hwif_prop.plat_ide_mapbase = devm_ioport_map(&pdev->dev,
+                        res_base->start, res_base->end - res_base->start + 1);
+                hwif_prop.plat_ide_alt_mapbase = devm_ioport_map(&pdev->dev,
+                        res_alt->start, res_alt->end - res_alt->start + 1);
+        }
+
+        hwif = plat_ide_locate_hwif(hwif_prop.plat_ide_mapbase,
+                 hwif_prop.plat_ide_alt_mapbase, pdata, res_irq->start, mmio);
+
+        if (!hwif) {
+                ret = -ENODEV;
+                goto out;
+        }
+        hwif->gendev.parent = &pdev->dev;
+        hwif->noprobe = 0;
+
+        probe_hwif_init(hwif);
+
+        platform_set_drvdata(pdev, hwif);
+        ide_proc_register_port(hwif);
+
+        return 0;
+
+out:
+        return ret;
+}
+
+static int __devexit plat_ide_remove(struct platform_device *pdev)
+{
+        ide_hwif_t *hwif = pdev->dev.driver_data;
+
+        if (hwif != hwif_prop.hwif) {
+                dev_printk(KERN_DEBUG, &pdev->dev, "%s: hwif value error",
+                           pdev->name);
+        } else {
+                ide_unregister(hwif_prop.index);
+                hwif_prop.index = 0;
+                hwif_prop.hwif = NULL;
+        }
+
+        return 0;
+}
+
+static struct platform_driver platform_ide_driver = {
+        .driver = {
+                .name = "pata_platform",
+        },
+        .probe = plat_ide_probe,
+        .remove = __devexit_p(plat_ide_remove),
+};
+
+static int __init platform_ide_init(void)
+{
+        return platform_driver_register(&platform_ide_driver);
+}
+
+static void __exit platform_ide_exit(void)
+{
+        platform_driver_unregister(&platform_ide_driver);
+}
+
+MODULE_DESCRIPTION("Platform IDE driver");
+MODULE_LICENSE("GPL");
+
+module_init(platform_ide_init);
+module_exit(platform_ide_exit);
diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c
index 8b87a424094a..0c81d2d0b941 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -224,15 +224,14 @@ static void qd_set_timing (ide_drive_t *drive, u8 timing)
         printk(KERN_DEBUG "%s: %#x\n", drive->name, timing);
 }
 
-/*
- * qd6500_tune_drive
- */
-
-static void qd6500_tune_drive (ide_drive_t *drive, u8 pio)
+static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         int active_time   = 175;
         int recovery_time = 415; /* worst case values from the dos driver */
 
+        /*
+         * FIXME: use "pio" value
+         */
         if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)
                 && drive->id->tPIO && (drive->id->field_valid & 0x02)
                 && drive->id->eide_pio >= 240) {
@@ -246,11 +245,7 @@ static void qd6500_tune_drive (ide_drive_t *drive, u8 pio)
         qd_set_timing(drive, qd6500_compute_timing(HWIF(drive), active_time, recovery_time));
 }
 
-/*
- * qd6580_tune_drive
- */
-
-static void qd6580_tune_drive (ide_drive_t *drive, u8 pio)
+static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         int base = HWIF(drive)->select_data;
         unsigned int cycle_time;
@@ -258,7 +253,6 @@ static void qd6580_tune_drive (ide_drive_t *drive, u8 pio)
         int recovery_time = 415; /* worst case values from the dos driver */
 
         if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) {
-                pio = ide_get_best_pio_mode(drive, pio, 4);
                 cycle_time = ide_pio_cycle_time(drive, pio);
 
                 switch (pio) {
@@ -335,8 +329,7 @@ static int __init qd_testreg(int port)
  */
 
 static void __init qd_setup(ide_hwif_t *hwif, int base, int config,
-                            unsigned int data0, unsigned int data1,
-                            void (*tuneproc) (ide_drive_t *, u8 pio))
+                            unsigned int data0, unsigned int data1)
 {
         hwif->chipset = ide_qd65xx;
         hwif->channel = hwif->index;
@@ -347,8 +340,6 @@ static void __init qd_setup(ide_hwif_t *hwif, int base, int config,
         hwif->drives[0].io_32bit =
         hwif->drives[1].io_32bit = 1;
         hwif->pio_mask = ATA_PIO4;
-        hwif->tuneproc = tuneproc;
-        probe_hwif_init(hwif);
 }
 
 /*
@@ -361,7 +352,7 @@ static void __exit qd_unsetup(ide_hwif_t *hwif)
 {
         u8 config = hwif->config_data;
         int base = hwif->select_data;
-        void *tuneproc = (void *) hwif->tuneproc;
+        void *set_pio_mode = (void *)hwif->set_pio_mode;
 
         if (hwif->chipset != ide_qd65xx)
                 return;
@@ -369,12 +360,12 @@ static void __exit qd_unsetup(ide_hwif_t *hwif)
         printk(KERN_NOTICE "%s: back to defaults\n", hwif->name);
 
         hwif->selectproc = NULL;
-        hwif->tuneproc = NULL;
+        hwif->set_pio_mode = NULL;
 
-        if (tuneproc == (void *) qd6500_tune_drive) {
+        if (set_pio_mode == (void *)qd6500_set_pio_mode) {
                 // will do it for both
                 qd_write_reg(QD6500_DEF_DATA, QD_TIMREG(&hwif->drives[0]));
-        } else if (tuneproc == (void *) qd6580_tune_drive) {
+        } else if (set_pio_mode == (void *)qd6580_set_pio_mode) {
                 if (QD_CONTROL(hwif) & QD_CONTR_SEC_DISABLED) {
                         qd_write_reg(QD6580_DEF_DATA, QD_TIMREG(&hwif->drives[0]));
                         qd_write_reg(QD6580_DEF_DATA2, QD_TIMREG(&hwif->drives[1]));
@@ -424,8 +415,11 @@ static int __init qd_probe(int base)
                         return 1;
                 }
 
-                qd_setup(hwif, base, config, QD6500_DEF_DATA, QD6500_DEF_DATA,
-                         &qd6500_tune_drive);
+                qd_setup(hwif, base, config, QD6500_DEF_DATA, QD6500_DEF_DATA);
+
+                hwif->set_pio_mode = &qd6500_set_pio_mode;
+
+                probe_hwif_init(hwif);
 
                 ide_proc_register_port(hwif);
 
@@ -455,8 +449,12 @@ static int __init qd_probe(int base)
                         printk(KERN_INFO "%s: qd6580: single IDE board\n",
                                          hwif->name);
                         qd_setup(hwif, base, config | (control << 8),
-                                 QD6580_DEF_DATA, QD6580_DEF_DATA2,
-                                 &qd6580_tune_drive);
+                                 QD6580_DEF_DATA, QD6580_DEF_DATA2);
+
+                        hwif->set_pio_mode = &qd6580_set_pio_mode;
+
+                        probe_hwif_init(hwif);
+
                         qd_write_reg(QD_DEF_CONTR,QD_CONTROL_PORT);
 
                         ide_proc_register_port(hwif);
@@ -472,11 +470,19 @@ static int __init qd_probe(int base)
                                         hwif->name, mate->name);
 
                         qd_setup(hwif, base, config | (control << 8),
-                                 QD6580_DEF_DATA, QD6580_DEF_DATA,
-                                 &qd6580_tune_drive);
+                                 QD6580_DEF_DATA, QD6580_DEF_DATA);
+
+                        hwif->set_pio_mode = &qd6580_set_pio_mode;
+
+                        probe_hwif_init(hwif);
+
                         qd_setup(mate, base, config | (control << 8),
-                                 QD6580_DEF_DATA2, QD6580_DEF_DATA2,
-                                 &qd6580_tune_drive);
+                                 QD6580_DEF_DATA2, QD6580_DEF_DATA2);
+
+                        mate->set_pio_mode = &qd6580_set_pio_mode;
+
+                        probe_hwif_init(mate);
+
                         qd_write_reg(QD_DEF_CONTR,QD_CONTROL_PORT);
 
                         ide_proc_register_port(hwif);
diff --git a/drivers/ide/legacy/umc8672.c b/drivers/ide/legacy/umc8672.c
index d2862e638bc5..1151c92dd531 100644
--- a/drivers/ide/legacy/umc8672.c
+++ b/drivers/ide/legacy/umc8672.c
@@ -105,12 +105,11 @@ static void umc_set_speeds (u8 speeds[])
                 speeds[0], speeds[1], speeds[2], speeds[3]);
 }
 
-static void tune_umc (ide_drive_t *drive, u8 pio)
+static void umc_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         unsigned long flags;
         ide_hwgroup_t *hwgroup = ide_hwifs[HWIF(drive)->index^1].hwgroup;
 
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         printk("%s: setting umc8672 to PIO mode%d (speed %d)\n",
                 drive->name, pio, pio_to_umc[pio]);
         spin_lock_irqsave(&ide_lock, flags);
@@ -150,12 +149,12 @@ static int __init umc8672_probe(void)
 
         hwif->chipset = ide_umc8672;
         hwif->pio_mask = ATA_PIO4;
-        hwif->tuneproc = &tune_umc;
+        hwif->set_pio_mode = &umc_set_pio_mode;
         hwif->mate = mate;
 
         mate->chipset = ide_umc8672;
         mate->pio_mask = ATA_PIO4;
-        mate->tuneproc = &tune_umc;
+        mate->set_pio_mode = &umc_set_pio_mode;
         mate->mate = hwif;
         mate->channel = 1;
 
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index 2ba6a054b861..85819ae20602 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -99,18 +99,12 @@ void auide_outsw(unsigned long port, void *addr, u32 count)
 
 #endif
 
-static void auide_tune_drive(ide_drive_t *drive, byte pio)
+static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         int mem_sttime;
         int mem_stcfg;
         u8 speed;
 
-        /* get the best pio mode for the drive */
-        pio = ide_get_best_pio_mode(drive, pio, 4);
-
-        printk(KERN_INFO "%s: setting Au1XXX IDE to PIO mode%d\n",
-               drive->name, pio);
-
         mem_sttime = 0;
         mem_stcfg  = au_readl(MEM_STCFG2);
 
@@ -175,7 +169,7 @@ static void auide_tune_drive(ide_drive_t *drive, byte pio)
         ide_config_drive_speed(drive, speed);
 }
 
-static int auide_tune_chipset (ide_drive_t *drive, u8 speed)
+static int auide_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         int mem_sttime;
         int mem_stcfg;
@@ -183,11 +177,6 @@ static int auide_tune_chipset (ide_drive_t *drive, u8 speed)
         mem_sttime = 0;
         mem_stcfg  = au_readl(MEM_STCFG2);
 
-        if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
-                auide_tune_drive(drive, speed - XFER_PIO_0);
-                return 0;
-        }
-
         switch(speed) {
 #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
         case XFER_MW_DMA_2:
@@ -712,7 +701,7 @@ static int au_ide_probe(struct device *dev)
         hwif->OUTSW                     = auide_outsw;
 #endif
 
-        hwif->tuneproc                  = &auide_tune_drive;
+        hwif->set_pio_mode              = &au1xxx_set_pio_mode;
         hwif->speedproc                 = &auide_tune_chipset;
 
 #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 74432830abf7..0d5f62c5dfae 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -87,12 +87,11 @@ static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entr
         return chipset_table->ultra_settings;
 }
 
-static int aec6210_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int aec6210_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
         u16 d_conf              = 0;
-        u8 speed                = ide_rate_filter(drive, xferspeed);
         u8 ultra = 0, ultra_conf = 0;
         u8 tmp0 = 0, tmp1 = 0, tmp2 = 0;
         unsigned long flags;
@@ -115,11 +114,10 @@ static int aec6210_tune_chipset (ide_drive_t *drive, u8 xferspeed)
         return(ide_config_drive_speed(drive, speed));
 }
 
-static int aec6260_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int aec6260_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
-        u8 speed        = ide_rate_filter(drive, xferspeed);
         u8 unit         = (drive->select.b.unit & 0x01);
         u8 tmp1 = 0, tmp2 = 0;
         u8 ultra = 0, drive_conf = 0, ultra_conf = 0;
@@ -140,9 +138,8 @@ static int aec6260_tune_chipset (ide_drive_t *drive, u8 xferspeed)
         return(ide_config_drive_speed(drive, speed));
 }
 
-static void aec62xx_tune_drive (ide_drive_t *drive, u8 pio)
+static void aec_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         (void) HWIF(drive)->speedproc(drive, pio + XFER_PIO_0);
 }
 
@@ -152,7 +149,7 @@ static int aec62xx_config_drive_xfer_rate (ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                aec62xx_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -203,7 +200,7 @@ static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
         u8 reg54 = 0,  mask     = hwif->channel ? 0xf0 : 0x0f;
         unsigned long flags;
 
-        hwif->tuneproc = &aec62xx_tune_drive;
+        hwif->set_pio_mode = &aec_set_pio_mode;
 
         if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF) {
                 if(hwif->mate)
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 20ebe3b7049c..d04b966b4347 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/ide/pci/alim15x3.c             Version 0.25    Jun 9 2007
+ * linux/drivers/ide/pci/alim15x3.c             Version 0.26    Jul 14 2007
  *
  *  Copyright (C) 1998-2000 Michel Aubry, Maintainer
  *  Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
@@ -283,17 +283,14 @@ static int ali_get_info (char *buffer, char **addr, off_t offset, int count)
 #endif  /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
 
 /**
- *      ali15x3_tune_pio        -       set up chipset for PIO mode
- *      @drive: drive to tune
- *      @pio: desired mode
- *
- *      Select the best PIO mode for the drive in question.
- *      Then program the controller for this mode.
+ *      ali_tune_pio    -       set host controller for PIO mode
+ *      @drive: drive
+ *      @pio: PIO mode number
  *
- *      Returns the PIO mode programmed.
+ *      Program the controller for the given PIO mode.
  */
- 
-static u8 ali15x3_tune_pio (ide_drive_t *drive, u8 pio)
+
+static void ali_tune_pio(ide_drive_t *drive, const u8 pio)
 {
         ide_hwif_t *hwif = HWIF(drive);
         struct pci_dev *dev = hwif->pci_dev;
@@ -306,7 +303,6 @@ static u8 ali15x3_tune_pio (ide_drive_t *drive, u8 pio)
         u8 cd_dma_fifo = 0;
         int unit = drive->select.b.unit & 1;
 
-        pio = ide_get_best_pio_mode(drive, pio, 5);
         s_time = ide_pio_timings[pio].setup_time;
         a_time = ide_pio_timings[pio].active_time;
         if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
@@ -359,22 +355,20 @@ static u8 ali15x3_tune_pio (ide_drive_t *drive, u8 pio)
          * { 25,   70,     25  },   PIO Mode 4 with IORDY  ns
          * { 20,   50,     30  }    PIO Mode 5 with IORDY (nonstandard)
          */
-
-        return pio;
 }
 
 /**
- *      ali15x3_tune_drive      -       set up drive for PIO mode
+ *      ali_set_pio_mode        -       set up drive for PIO mode
  *      @drive: drive to tune
  *      @pio: desired mode
  *
- *      Program the controller with the best PIO timing for the given drive.
+ *      Program the controller with the desired PIO timing for the given drive.
  *      Then set up the drive itself.
  */
 
-static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
+static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ali15x3_tune_pio(drive, pio);
+        ali_tune_pio(drive, pio);
         (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
@@ -409,22 +403,24 @@ static u8 ali_udma_filter(ide_drive_t *drive)
 /**
  *      ali15x3_tune_chipset    -       set up chipset/drive for new speed
  *      @drive: drive to configure for
- *      @xferspeed: desired speed
+ *      @speed: desired speed
  *
  *      Configure the hardware for the desired IDE transfer mode.
  *      We also do the needed drive configuration through helpers
  */
- 
-static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+
+static int ali15x3_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
-        u8 speed                = ide_rate_filter(drive, xferspeed);
         u8 speed1               = speed;
         u8 unit                 = (drive->select.b.unit & 0x01);
         u8 tmpbyte              = 0x00;
         int m5229_udma          = (hwif->channel) ? 0x57 : 0x56;
 
+        if (speed < XFER_PIO_0)
+                return 1;
+
         if (speed == XFER_UDMA_6)
                 speed1 = 0x47;
 
@@ -437,8 +433,9 @@ static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                 tmpbyte &= ultra_enable;
                 pci_write_config_byte(dev, m5229_udma, tmpbyte);
 
-                if (speed < XFER_SW_DMA_0)
-                        (void) ali15x3_tune_pio(drive, speed - XFER_PIO_0);
+                /*
+                 * FIXME: Oh, my... DMA timings are never set.
+                 */
         } else {
                 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
                 tmpbyte &= (0x0f << ((1-unit) << 2));
@@ -471,7 +468,7 @@ static int ali15x3_config_drive_for_dma(ide_drive_t *drive)
         if (ide_tune_dma(drive))
                 return 0;
 
-        ali15x3_tune_drive(drive, 255);
+        ide_set_max_pio(drive);
 
         return -1;
 }
@@ -701,7 +698,7 @@ static u8 __devinit ata66_ali15x3(ide_hwif_t *hwif)
 static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif)
 {
         hwif->autodma = 0;
-        hwif->tuneproc = &ali15x3_tune_drive;
+        hwif->set_pio_mode = &ali_set_pio_mode;
         hwif->speedproc = &ali15x3_tune_chipset;
         hwif->udma_filter = &ali_udma_filter;
 
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 06c15a6a3e7d..513205e52ad2 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -1,5 +1,5 @@
 /*
- * Version 2.21
+ * Version 2.22
  *
  * AMD 755/756/766/8111 and nVidia nForce/2/2s/3/3s/CK804/MCP04
  * IDE driver for Linux.
@@ -234,7 +234,7 @@ static void amd_set_speed(struct pci_dev *dev, unsigned char dn, struct ide_timi
  * by upper layers.
  */
 
-static int amd_set_drive(ide_drive_t *drive, u8 speed)
+static int amd_set_drive(ide_drive_t *drive, const u8 speed)
 {
         ide_drive_t *peer = HWIF(drive)->drives + (~drive->dn & 1);
         struct ide_timing t, p;
@@ -266,32 +266,21 @@ static int amd_set_drive(ide_drive_t *drive, u8 speed)
 }
 
 /*
- * amd74xx_tune_drive() is a callback from upper layers for
- * PIO-only tuning.
+ * amd_set_pio_mode() is a callback from upper layers for PIO-only tuning.
  */
 
-static void amd74xx_tune_drive(ide_drive_t *drive, u8 pio)
+static void amd_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        if (pio == 255)
-                pio = ide_get_best_pio_mode(drive, 255, 5);
-
-        amd_set_drive(drive, XFER_PIO_0 + min_t(byte, pio, 5));
+        amd_set_drive(drive, XFER_PIO_0 + pio);
 }
 
 static int amd74xx_ide_dma_check(ide_drive_t *drive)
 {
-        u8 speed = ide_max_dma_mode(drive);
-
-        if (speed == 0) {
-                amd74xx_tune_drive(drive, 255);
-                return -1;
-        }
-
-        amd_set_drive(drive, speed);
-
-        if (drive->autodma)
+        if (ide_tune_dma(drive))
                 return 0;
 
+        ide_set_max_pio(drive);
+
         return -1;
 }
 
@@ -409,7 +398,7 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
 
         hwif->autodma = 0;
 
-        hwif->tuneproc = &amd74xx_tune_drive;
+        hwif->set_pio_mode = &amd_set_pio_mode;
         hwif->speedproc = &amd_set_drive;
 
         for (i = 0; i < 2; i++) {
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 1725aa402d98..178876a3afca 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -153,9 +153,8 @@ static void atiixp_tune_pio(ide_drive_t *drive, u8 pio)
         spin_unlock_irqrestore(&atiixp_lock, flags);
 }
 
-static void atiixp_tuneproc(ide_drive_t *drive, u8 pio)
+static void atiixp_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         atiixp_tune_pio(drive, pio);
         (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
@@ -163,28 +162,21 @@ static void atiixp_tuneproc(ide_drive_t *drive, u8 pio)
 /**
  *      atiixp_tune_chipset     -       tune a ATIIXP interface
  *      @drive: IDE drive to tune
- *      @xferspeed: speed to configure
+ *      @speed: speed to configure
  *
  *      Set a ATIIXP interface channel to the desired speeds. This involves
  *      requires the right timing data into the ATIIXP configuration space
  *      then setting the drive parameters appropriately
  */
 
-static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed)
+static int atiixp_speedproc(ide_drive_t *drive, const u8 speed)
 {
         struct pci_dev *dev = drive->hwif->pci_dev;
         unsigned long flags;
         int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
         u32 tmp32;
         u16 tmp16;
-        u8 speed, pio;
-
-        speed = ide_rate_filter(drive, xferspeed);
-
-        if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
-                atiixp_tune_pio(drive, speed - XFER_PIO_0);
-                return ide_config_drive_speed(drive, speed);
-        }
+        u8 pio;
 
         spin_lock_irqsave(&atiixp_lock, flags);
 
@@ -233,7 +225,7 @@ static int atiixp_dma_check(ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                atiixp_tuneproc(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -256,7 +248,7 @@ static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
                 hwif->irq = ch ? 15 : 14;
 
         hwif->autodma = 0;
-        hwif->tuneproc = &atiixp_tuneproc;
+        hwif->set_pio_mode = &atiixp_set_pio_mode;
         hwif->speedproc = &atiixp_speedproc;
         hwif->drives[0].autotune = 1;
         hwif->drives[1].autotune = 1;
@@ -325,7 +317,7 @@ static struct pci_device_id atiixp_pci_tbl[] = {
         { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
         { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
         { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
-        { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
+        { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
         { 0, },
 };
 MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);
diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c
index 9689494efa24..f369645e4d16 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -628,45 +628,40 @@ static void cmd640_set_mode (unsigned int index, u8 pio_mode, unsigned int cycle
         program_drive_counts (index);
 }
 
-/*
- * Drive PIO mode selection:
- */
-static void cmd640_tune_drive (ide_drive_t *drive, u8 mode_wanted)
+static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         unsigned int index = 0, cycle_time;
         u8 b;
 
         while (drive != cmd_drives[index]) {
                 if (++index > 3) {
-                        printk("%s: bad news in cmd640_tune_drive\n", drive->name);
+                        printk(KERN_ERR "%s: bad news in %s\n",
+                                        drive->name, __FUNCTION__);
                         return;
                 }
         }
-        switch (mode_wanted) {
+        switch (pio) {
                 case 6: /* set fast-devsel off */
                 case 7: /* set fast-devsel on */
-                        mode_wanted &= 1;
                         b = get_cmd640_reg(CNTRL) & ~0x27;
-                        if (mode_wanted)
+                        if (pio & 1)
                                 b |= 0x27;
                         put_cmd640_reg(CNTRL, b);
-                        printk("%s: %sabled cmd640 fast host timing (devsel)\n", drive->name, mode_wanted ? "en" : "dis");
+                        printk("%s: %sabled cmd640 fast host timing (devsel)\n", drive->name, (pio & 1) ? "en" : "dis");
                         return;
 
                 case 8: /* set prefetch off */
                 case 9: /* set prefetch on */
-                        mode_wanted &= 1;
-                        set_prefetch_mode(index, mode_wanted);
-                        printk("%s: %sabled cmd640 prefetch\n", drive->name, mode_wanted ? "en" : "dis");
+                        set_prefetch_mode(index, pio & 1);
+                        printk("%s: %sabled cmd640 prefetch\n", drive->name, (pio & 1) ? "en" : "dis");
                         return;
         }
 
-        mode_wanted = ide_get_best_pio_mode(drive, mode_wanted, 5);
-        cycle_time = ide_pio_cycle_time(drive, mode_wanted);
-        cmd640_set_mode(index, mode_wanted, cycle_time);
+        cycle_time = ide_pio_cycle_time(drive, pio);
+        cmd640_set_mode(index, pio, cycle_time);
 
         printk("%s: selected cmd640 PIO mode%d (%dns)",
-                drive->name, mode_wanted, cycle_time);
+                drive->name, pio, cycle_time);
 
         display_clocks(index);
 }
@@ -766,8 +761,10 @@ int __init ide_probe_for_cmd640x (void)
                cmd_hwif0->name, 'a' + cmd640_chip_version - 1, bus_type, cfr);
         cmd_hwif0->chipset = ide_cmd640;
 #ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
+        cmd_hwif0->host_flags = IDE_HFLAG_ABUSE_PREFETCH |
+                                IDE_HFLAG_ABUSE_FAST_DEVSEL;
         cmd_hwif0->pio_mask = ATA_PIO5;
-        cmd_hwif0->tuneproc = &cmd640_tune_drive;
+        cmd_hwif0->set_pio_mode = &cmd640_set_pio_mode;
 #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
 
         /*
@@ -822,8 +819,10 @@ int __init ide_probe_for_cmd640x (void)
                 cmd_hwif1->mate = cmd_hwif0;
                 cmd_hwif1->channel = 1;
 #ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
+                cmd_hwif1->host_flags = IDE_HFLAG_ABUSE_PREFETCH |
+                                        IDE_HFLAG_ABUSE_FAST_DEVSEL;
                 cmd_hwif1->pio_mask = ATA_PIO5;
-                cmd_hwif1->tuneproc = &cmd640_tune_drive;
+                cmd_hwif1->set_pio_mode = &cmd640_set_pio_mode;
 #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
         }
         printk(KERN_INFO "%s: %sserialized, secondary interface %s\n", cmd_hwif1->name,
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 0e3b5de26e69..0b568c60f926 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -214,28 +214,25 @@ static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_
 }
 
 /*
- * This routine selects drive's best PIO mode and writes into the chipset
- * registers setup/active/recovery timings.
+ * This routine writes into the chipset registers
+ * PIO setup/active/recovery timings.
  */
-static u8 cmd64x_tune_pio (ide_drive_t *drive, u8 mode_wanted)
+static void cmd64x_tune_pio(ide_drive_t *drive, const u8 pio)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
         unsigned int cycle_time;
-        u8 pio_mode, setup_count, arttim = 0;
+        u8 setup_count, arttim = 0;
+
         static const u8 setup_values[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0};
         static const u8 arttim_regs[4] = {ARTTIM0, ARTTIM1, ARTTIM23, ARTTIM23};
 
-        pio_mode = ide_get_best_pio_mode(drive, mode_wanted, 5);
-        cycle_time = ide_pio_cycle_time(drive, pio_mode);
-
-        cmdprintk("%s: PIO mode wanted %d, selected %d (%d ns)\n",
-                  drive->name, mode_wanted, pio_mode, cycle_time);
+        cycle_time = ide_pio_cycle_time(drive, pio);
 
         program_cycle_times(drive, cycle_time,
-                            ide_pio_timings[pio_mode].active_time);
+                            ide_pio_timings[pio].active_time);
 
-        setup_count = quantize_timing(ide_pio_timings[pio_mode].setup_time,
+        setup_count = quantize_timing(ide_pio_timings[pio].setup_time,
                                       1000 / system_bus_clock());
 
         /*
@@ -266,16 +263,14 @@ static u8 cmd64x_tune_pio (ide_drive_t *drive, u8 mode_wanted)
         arttim |= setup_values[setup_count];
         (void) pci_write_config_byte(dev, arttim_regs[drive->dn], arttim);
         cmdprintk("Write 0x%02x to reg 0x%x\n", arttim, arttim_regs[drive->dn]);
-
-        return pio_mode;
 }
 
 /*
  * Attempts to set drive's PIO mode.
- * Special cases are 8: prefetch off, 9: prefetch on (both never worked),
- * and 255: auto-select best mode (used at boot time).
+ * Special cases are 8: prefetch off, 9: prefetch on (both never worked)
  */
-static void cmd64x_tune_drive (ide_drive_t *drive, u8 pio)
+
+static void cmd64x_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         /*
          * Filter out the prefetch control values
@@ -284,19 +279,17 @@ static void cmd64x_tune_drive (ide_drive_t *drive, u8 pio)
         if (pio == 8 || pio == 9)
                 return;
 
-        pio = cmd64x_tune_pio(drive, pio);
+        cmd64x_tune_pio(drive, pio);
         (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
-static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
+static int cmd64x_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
         u8 unit                 = drive->dn & 0x01;
         u8 regU = 0, pciU       = hwif->channel ? UDIDETCR1 : UDIDETCR0;
 
-        speed = ide_rate_filter(drive, speed);
-
         if (speed >= XFER_SW_DMA_0) {
                 (void) pci_read_config_byte(dev, pciU, &regU);
                 regU &= ~(unit ? 0xCA : 0x35);
@@ -330,14 +323,6 @@ static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
         case XFER_MW_DMA_0:
                 program_cycle_times(drive, 480, 215);
                 break;
-        case XFER_PIO_5:
-        case XFER_PIO_4:
-        case XFER_PIO_3:
-        case XFER_PIO_2:
-        case XFER_PIO_1:
-        case XFER_PIO_0:
-                (void) cmd64x_tune_pio(drive, speed - XFER_PIO_0);
-                break;
         default:
                 return 1;
         }
@@ -354,7 +339,7 @@ static int cmd64x_config_drive_for_dma (ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                cmd64x_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -538,7 +523,7 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
 
         pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
 
-        hwif->tuneproc  = &cmd64x_tune_drive;
+        hwif->set_pio_mode = &cmd64x_set_pio_mode;
         hwif->speedproc = &cmd64x_tune_chipset;
 
         hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
@@ -622,6 +607,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
                 .bootable       = ON_BOARD,
+                .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                 .pio_mask       = ATA_PIO5,
                 .udma_mask      = 0x00, /* no udma */
         },{     /* 1 */
@@ -632,6 +618,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
                 .bootable       = ON_BOARD,
+                .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                 .pio_mask       = ATA_PIO5,
                 .udma_mask      = 0x07, /* udma0-2 */
         },{     /* 2 */
@@ -642,6 +629,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
                 .bootable       = ON_BOARD,
+                .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                 .pio_mask       = ATA_PIO5,
                 .udma_mask      = 0x1f, /* udma0-4 */
         },{     /* 3 */
@@ -652,6 +640,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
                 .bootable       = ON_BOARD,
+                .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                 .pio_mask       = ATA_PIO5,
                 .udma_mask      = 0x3f, /* udma0-5 */
         }
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index b89e81656875..1217d2a747fb 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -66,32 +66,13 @@ static struct pio_clocks cs5520_pio_clocks[]={
         {1, 2, 1}
 };
 
-static int cs5520_tune_chipset(ide_drive_t *drive, u8 xferspeed)
+static void cs5520_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         ide_hwif_t *hwif = HWIF(drive);
         struct pci_dev *pdev = hwif->pci_dev;
-        u8 speed = min((u8)XFER_PIO_4, xferspeed);
-        int pio = speed;
-        u8 reg;
         int controller = drive->dn > 1 ? 1 : 0;
-        int error;
-        
-        switch(speed)
-        {
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:
-                        pio -= XFER_PIO_0;
-                        break;
-                default:
-                        pio = 0;
-                        printk(KERN_ERR "cs55x0: bad ide timing.\n");
-        }
-        
-        printk("PIO clocking = %d\n", pio);
-        
+        u8 reg;
+
         /* FIXME: if DMA = 1 do we need to set the DMA bit here ? */
 
         /* 8bit CAT/CRT - 8bit command timing for channel */
@@ -115,25 +96,28 @@ static int cs5520_tune_chipset(ide_drive_t *drive, u8 xferspeed)
         reg = inb(hwif->dma_base + 0x02 + 8*controller);
         reg |= 1<<((drive->dn&1)+5);
         outb(reg, hwif->dma_base + 0x02 + 8*controller);
-                
-        error = ide_config_drive_speed(drive, speed);
-        /* ATAPI is harder so leave it for now */
-        if(!error && drive->media == ide_disk)
-                error = hwif->ide_dma_on(drive);
 
-        return error;
-}       
-        
-static void cs5520_tune_drive(ide_drive_t *drive, u8 pio)
+        (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
+}
+
+static int cs5520_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
-        cs5520_tune_chipset(drive, (XFER_PIO_0 + pio));
+        printk(KERN_ERR "cs55x0: bad ide timing.\n");
+
+        cs5520_set_pio_mode(drive, 0);
+
+        /*
+         * FIXME: this is incorrect to return zero here but
+         * since all users of ide_set_xfer_rate() ignore
+         * the return value it is not a problem currently
+         */
+        return 0;
 }
 
 static int cs5520_config_drive_xfer_rate(ide_drive_t *drive)
 {
         /* Tune the drive for PIO modes up to PIO 4 */  
-        cs5520_tune_drive(drive, 255);
+        ide_set_max_pio(drive);
 
         /* Then tell the core to use DMA operations */
         return 0;
@@ -165,7 +149,7 @@ static int cs5520_dma_on(ide_drive_t *drive)
 
 static void __devinit init_hwif_cs5520(ide_hwif_t *hwif)
 {
-        hwif->tuneproc = &cs5520_tune_drive;
+        hwif->set_pio_mode = &cs5520_set_pio_mode;
         hwif->speedproc = &cs5520_tune_chipset;
         hwif->ide_dma_check = &cs5520_config_drive_xfer_rate;
         hwif->ide_dma_on = &cs5520_dma_on;
@@ -179,7 +163,8 @@ static void __devinit init_hwif_cs5520(ide_hwif_t *hwif)
                 hwif->drives[1].autotune = 1;
                 return;
         }
-        
+
+        /* ATAPI is harder so leave it for now */
         hwif->atapi_dma = 0;
         hwif->ultra_mask = 0;
         hwif->swdma_mask = 0;
diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/pci/cs5530.c
index e5949b1d3fb0..741507b4cd93 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/pci/cs5530.c
@@ -71,19 +71,18 @@ static void cs5530_tunepio(ide_drive_t *drive, u8 pio)
 }
 
 /**
- *      cs5530_tuneproc         -       select/set PIO modes
+ *      cs5530_set_pio_mode     -       set PIO mode
+ *      @drive: drive
+ *      @pio: PIO mode number
  *
- *      cs5530_tuneproc() handles selection/setting of PIO modes
- *      for both the chipset and drive.
+ *      Handles setting of PIO mode for both the chipset and drive.
  *
- *      The ide_init_cs5530() routine guarantees that all drives
+ *      The init_hwif_cs5530() routine guarantees that all drives
  *      will have valid default PIO timings set up before we get here.
  */
 
-static void cs5530_tuneproc (ide_drive_t *drive, u8 pio)        /* pio=255 means "autotune" */
+static void cs5530_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
-
         if (cs5530_set_xfer_mode(drive, XFER_PIO_0 + pio) == 0)
                 cs5530_tunepio(drive, pio);
 }
@@ -143,13 +142,11 @@ static int cs5530_config_dma(ide_drive_t *drive)
         return 1;
 }
 
-static int cs5530_tune_chipset(ide_drive_t *drive, u8 mode)
+static int cs5530_tune_chipset(ide_drive_t *drive, const u8 mode)
 {
         unsigned long basereg;
         unsigned int reg, timings = 0;
 
-        mode = ide_rate_filter(drive, mode);
-
         /*
          * Tell the drive to switch to the new mode; abort on failure.
          */
@@ -166,13 +163,6 @@ static int cs5530_tune_chipset(ide_drive_t *drive, u8 mode)
                 case XFER_MW_DMA_0:     timings = 0x00077771; break;
                 case XFER_MW_DMA_1:     timings = 0x00012121; break;
                 case XFER_MW_DMA_2:     timings = 0x00002020; break;
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:
-                        cs5530_tunepio(drive, mode - XFER_PIO_0);
-                        return 0;
                 default:
                         BUG();
                         break;
@@ -308,7 +298,7 @@ static void __devinit init_hwif_cs5530 (ide_hwif_t *hwif)
         if (hwif->mate)
                 hwif->serialized = hwif->mate->serialized = 1;
 
-        hwif->tuneproc = &cs5530_tuneproc;
+        hwif->set_pio_mode = &cs5530_set_pio_mode;
         hwif->speedproc = &cs5530_tune_chipset;
 
         basereg = CS5530_BASEREG(hwif);
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 082ca7da2cbc..383b7eccbcbb 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -75,7 +75,7 @@ static unsigned int cs5535_udma_timings[5] =
  *
  *      cs5535_set_speed() configures the chipset to a new speed.
  */
-static void cs5535_set_speed(ide_drive_t *drive, u8 speed)
+static void cs5535_set_speed(ide_drive_t *drive, const u8 speed)
 {
 
         u32 reg = 0, dummy;
@@ -141,23 +141,22 @@ static void cs5535_set_speed(ide_drive_t *drive, u8 speed)
  */
 static int cs5535_set_drive(ide_drive_t *drive, u8 speed)
 {
-        speed = ide_rate_filter(drive, speed);
         ide_config_drive_speed(drive, speed);
         cs5535_set_speed(drive, speed);
 
         return 0;
 }
 
-/****
- *      cs5535_tuneproc    -       PIO setup
- *      @drive: drive to set up
- *      @pio: mode to use (255 for 'best possible')
+/**
+ *      cs5535_set_pio_mode     -       PIO setup
+ *      @drive: drive
+ *      @pio: PIO mode number
  *
  *      A callback from the upper layers for PIO-only tuning.
  */
-static void cs5535_tuneproc(ide_drive_t *drive, u8 pio)
+
+static void cs5535_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         ide_config_drive_speed(drive, XFER_PIO_0 + pio);
         cs5535_set_speed(drive, XFER_PIO_0 + pio);
 }
@@ -170,7 +169,7 @@ static int cs5535_dma_check(ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                cs5535_tuneproc(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -199,7 +198,7 @@ static void __devinit init_hwif_cs5535(ide_hwif_t *hwif)
 
         hwif->autodma = 0;
 
-        hwif->tuneproc = &cs5535_tuneproc;
+        hwif->set_pio_mode = &cs5535_set_pio_mode;
         hwif->speedproc = &cs5535_set_drive;
         hwif->ide_dma_check = &cs5535_dma_check;
 
diff --git a/drivers/ide/pci/cy82c693.c b/drivers/ide/pci/cy82c693.c
index daa36fcbc8ef..dc278025d318 100644
--- a/drivers/ide/pci/cy82c693.c
+++ b/drivers/ide/pci/cy82c693.c
@@ -97,9 +97,6 @@
 #define CY82_INDEX_CHANNEL1     0x31
 #define CY82_INDEX_TIMEOUT      0x32
 
-/* the max PIO mode - from datasheet */
-#define CY82C693_MAX_PIO        4
-
 /* the min and max PCI bus speed in MHz - from datasheet */
 #define CY82C963_MIN_BUS_SPEED  25
 #define CY82C963_MAX_BUS_SPEED  33
@@ -148,9 +145,6 @@ static void compute_clocks (u8 pio, pio_clocks_t *p_pclk)
          * so you can play with the idebus=xx parameter
          */
 
-        if (pio > CY82C693_MAX_PIO)
-                pio = CY82C693_MAX_PIO;
-
         /* let's calc the address setup time clocks */
         p_pclk->address_time = (u8)calc_clk(ide_pio_timings[pio].setup_time, bus_speed);
 
@@ -269,10 +263,7 @@ static int cy82c693_ide_dma_on (ide_drive_t *drive)
         return __ide_dma_on(drive);
 }
 
-/*
- * tune ide drive - set PIO mode
- */
-static void cy82c693_tune_drive (ide_drive_t *drive, u8 pio)
+static void cy82c693_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         ide_hwif_t *hwif = HWIF(drive);
         struct pci_dev *dev = hwif->pci_dev;
@@ -329,13 +320,6 @@ static void cy82c693_tune_drive (ide_drive_t *drive, u8 pio)
                 addrCtrl, pclk.time_16r, pclk.time_16w, pclk.time_8);
 #endif /* CY82C693_DEBUG_LOGS */
 
-        /* first let's calc the pio modes */
-        pio = ide_get_best_pio_mode(drive, pio, CY82C693_MAX_PIO);
-
-#if CY82C693_DEBUG_INFO
-        printk (KERN_INFO "%s: Selected PIO mode %d\n", drive->name, pio);
-#endif /* CY82C693_DEBUG_INFO */
-
         /* let's calc the values for this PIO mode */
         compute_clocks(pio, &pclk);
 
@@ -447,7 +431,7 @@ static void __devinit init_hwif_cy82c693(ide_hwif_t *hwif)
         hwif->autodma = 0;
 
         hwif->chipset = ide_cy82c693;
-        hwif->tuneproc = &cy82c693_tune_drive;
+        hwif->set_pio_mode = &cy82c693_set_pio_mode;
 
         if (!hwif->dma_base) {
                 hwif->drives[0].autotune = 1;
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c
index cb8fe5643d3b..a1bb10188fe5 100644
--- a/drivers/ide/pci/hpt34x.c
+++ b/drivers/ide/pci/hpt34x.c
@@ -43,10 +43,9 @@
 
 #define HPT343_DEBUG_DRIVE_INFO         0
 
-static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int hpt34x_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         struct pci_dev *dev     = HWIF(drive)->pci_dev;
-        u8 speed = ide_rate_filter(drive, xferspeed);
         u32 reg1= 0, tmp1 = 0, reg2 = 0, tmp2 = 0;
         u8                      hi_speed, lo_speed;
 
@@ -78,9 +77,8 @@ static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
         return(ide_config_drive_speed(drive, speed));
 }
 
-static void hpt34x_tune_drive (ide_drive_t *drive, u8 pio)
+static void hpt34x_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 5);
         (void) hpt34x_tune_chipset(drive, (XFER_PIO_0 + pio));
 }
 
@@ -92,7 +90,7 @@ static int hpt34x_config_drive_xfer_rate (ide_drive_t *drive)
                 return -1;
 
         if (ide_use_fast_pio(drive))
-                hpt34x_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -146,7 +144,7 @@ static void __devinit init_hwif_hpt34x(ide_hwif_t *hwif)
 
         hwif->autodma = 0;
 
-        hwif->tuneproc = &hpt34x_tune_drive;
+        hwif->set_pio_mode = &hpt34x_set_pio_mode;
         hwif->speedproc = &hpt34x_tune_chipset;
         hwif->drives[0].autotune = 1;
         hwif->drives[1].autotune = 1;
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 39f1c89f7c86..0e7d3b60d43c 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/ide/pci/hpt366.c               Version 1.12    Aug 19, 2007
+ * linux/drivers/ide/pci/hpt366.c               Version 1.13    Sep 29, 2007
  *
  * Copyright (C) 1999-2003              Andre Hedrick <andre@linux-ide.org>
  * Portions Copyright (C) 2001          Sun Microsystems, Inc.
@@ -114,7 +114,7 @@
  *   unify HPT36x/37x timing setup code and the speedproc handlers by joining
  *   the register setting lists into the table indexed by the clock selected
  * - set the correct hwif->ultra_mask for each individual chip
- * - add UltraDMA mode filtering for the HPT37[24] based SATA cards
+ * - add Ultra and MW DMA mode filtering for the HPT37[24] based SATA cards
  *      Sergei Shtylyov, <sshtylyov@ru.mvista.com> or <source@mvista.com>
  */
 
@@ -562,6 +562,24 @@ static u8 hpt3xx_udma_filter(ide_drive_t *drive)
         return check_in_drive_list(drive, bad_ata33) ? 0x00 : mask;
 }
 
+static u8 hpt3xx_mdma_filter(ide_drive_t *drive)
+{
+        ide_hwif_t *hwif        = HWIF(drive);
+        struct hpt_info *info   = pci_get_drvdata(hwif->pci_dev);
+
+        switch (info->chip_type) {
+        case HPT372 :
+        case HPT372A:
+        case HPT372N:
+        case HPT374 :
+                if (ide_dev_is_sata(drive->id))
+                        return 0x00;
+                /* Fall thru */
+        default:
+                return 0x07;
+        }
+}
+
 static u32 get_speed_setting(u8 speed, struct hpt_info *info)
 {
         int i;
@@ -582,20 +600,15 @@ static u32 get_speed_setting(u8 speed, struct hpt_info *info)
         return (*info->settings)[i];
 }
 
-static int hpt36x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
+static int hpt36x_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev  *dev    = hwif->pci_dev;
         struct hpt_info *info   = pci_get_drvdata(dev);
-        u8  speed               = ide_rate_filter(drive, xferspeed);
         u8  itr_addr            = drive->dn ? 0x44 : 0x40;
         u32 old_itr             = 0;
         u32 itr_mask, new_itr;
 
-        /* TODO: move this to ide_rate_filter() [ check ->atapi_dma ] */
-        if (drive->media != ide_disk)
-                speed = min_t(u8, speed, XFER_PIO_4);
-
         itr_mask = speed < XFER_MW_DMA_0 ? 0x30070000 :
                   (speed < XFER_UDMA_0   ? 0xc0070000 : 0xc03800ff);
 
@@ -614,20 +627,15 @@ static int hpt36x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
         return ide_config_drive_speed(drive, speed);
 }
 
-static int hpt37x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
+static int hpt37x_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev  *dev    = hwif->pci_dev;
         struct hpt_info *info   = pci_get_drvdata(dev);
-        u8  speed               = ide_rate_filter(drive, xferspeed);
         u8  itr_addr            = 0x40 + (drive->dn * 4);
         u32 old_itr             = 0;
         u32 itr_mask, new_itr;
 
-        /* TODO: move this to ide_rate_filter() [ check ->atapi_dma ] */
-        if (drive->media != ide_disk)
-                speed = min_t(u8, speed, XFER_PIO_4);
-
         itr_mask = speed < XFER_MW_DMA_0 ? 0x303c0000 :
                   (speed < XFER_UDMA_0   ? 0xc03c0000 : 0xc1c001ff);
 
@@ -654,9 +662,8 @@ static int hpt3xx_tune_chipset(ide_drive_t *drive, u8 speed)
                 return hpt36x_tune_chipset(drive, speed);
 }
 
-static void hpt3xx_tune_drive(ide_drive_t *drive, u8 pio)
+static void hpt3xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         (void) hpt3xx_tune_chipset (drive, XFER_PIO_0 + pio);
 }
 
@@ -718,7 +725,7 @@ static int hpt366_config_drive_xfer_rate(ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                hpt3xx_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -1249,7 +1256,7 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
         /* Cache the channel's MISC. control registers' offset */
         hwif->select_data       = hwif->channel ? 0x54 : 0x50;
 
-        hwif->tuneproc          = &hpt3xx_tune_drive;
+        hwif->set_pio_mode      = &hpt3xx_set_pio_mode;
         hwif->speedproc         = &hpt3xx_tune_chipset;
         hwif->quirkproc         = &hpt3xx_quirkproc;
         hwif->intrproc          = &hpt3xx_intrproc;
@@ -1257,6 +1264,7 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
         hwif->busproc           = &hpt3xx_busproc;
 
         hwif->udma_filter       = &hpt3xx_udma_filter;
+        hwif->mdma_filter       = &hpt3xx_mdma_filter;
 
         /*
          * HPT3xxN chips have some complications:
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 70b3245dbf62..76e91ff9420b 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -105,9 +105,8 @@ static void it8213_tune_pio(ide_drive_t *drive, const u8 pio)
         spin_unlock_irqrestore(&tune_lock, flags);
 }
 
-static void it8213_tuneproc(ide_drive_t *drive, u8 pio)
+static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         it8213_tune_pio(drive, pio);
         ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
@@ -115,20 +114,16 @@ static void it8213_tuneproc(ide_drive_t *drive, u8 pio)
 /**
  *      it8213_tune_chipset     -       set controller timings
  *      @drive: Drive to set up
- *      @xferspeed: speed we want to achieve
+ *      @speed: speed we want to achieve
  *
- *      Tune the ITE chipset for the desired mode. If we can't achieve
- *      the desired mode then tune for a lower one, but ultimately
- *      make the thing work.
+ *      Tune the ITE chipset for the desired mode.
  */
 
-static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int it8213_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
-
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
         u8 maslave              = 0x40;
-        u8 speed                = ide_rate_filter(drive, xferspeed);
         int a_speed             = 3 << (drive->dn * 4);
         int u_flag              = 1 << drive->dn;
         int v_flag              = 0x01 << drive->dn;
@@ -156,12 +151,6 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                 case XFER_MW_DMA_1:
                 case XFER_SW_DMA_2:
                         break;
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:
-                        break;
                 default:
                         return -1;
         }
@@ -193,10 +182,7 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                         pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
         }
 
-        if (speed > XFER_PIO_4)
-                it8213_tune_pio(drive, it8213_dma_2_pio(speed));
-        else
-                it8213_tune_pio(drive, speed - XFER_PIO_0);
+        it8213_tune_pio(drive, it8213_dma_2_pio(speed));
 
         return ide_config_drive_speed(drive, speed);
 }
@@ -216,7 +202,7 @@ static int it8213_config_drive_for_dma (ide_drive_t *drive)
         if (ide_tune_dma(drive))
                 return 0;
 
-        it8213_tuneproc(drive, 255);
+        ide_set_max_pio(drive);
 
         return -1;
 }
@@ -235,7 +221,7 @@ static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
         u8 reg42h = 0;
 
         hwif->speedproc = &it8213_tune_chipset;
-        hwif->tuneproc  = &it8213_tuneproc;
+        hwif->set_pio_mode = &it8213_set_pio_mode;
 
         hwif->autodma = 0;
 
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 9286c99e2ff0..758a98230cc5 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -274,9 +274,8 @@ static int it821x_tunepio(ide_drive_t *drive, u8 set_pio)
         return ide_config_drive_speed(drive, XFER_PIO_0 + set_pio);
 }
 
-static void it821x_tuneproc(ide_drive_t *drive, u8 pio)
+static void it821x_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         (void)it821x_tunepio(drive, pio);
 }
 
@@ -405,32 +404,19 @@ static int it821x_dma_end(ide_drive_t *drive)
         return ret;
 }
 
-
 /**
  *      it821x_tune_chipset     -       set controller timings
  *      @drive: Drive to set up
- *      @xferspeed: speed we want to achieve
+ *      @speed: speed we want to achieve
  *
- *      Tune the ITE chipset for the desired mode. If we can't achieve
- *      the desired mode then tune for a lower one, but ultimately
- *      make the thing work.
+ *      Tune the ITE chipset for the desired mode.
  */
 
-static int it821x_tune_chipset (ide_drive_t *drive, byte xferspeed)
+static int it821x_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
 
         ide_hwif_t *hwif        = drive->hwif;
         struct it821x_dev *itdev = ide_get_hwifdata(hwif);
-        u8 speed                = ide_rate_filter(drive, xferspeed);
-
-        switch (speed) {
-        case XFER_PIO_4:
-        case XFER_PIO_3:
-        case XFER_PIO_2:
-        case XFER_PIO_1:
-        case XFER_PIO_0:
-                return it821x_tunepio(drive, speed - XFER_PIO_0);
-        }
 
         if (itdev->smart == 0) {
                 switch (speed) {
@@ -477,7 +463,7 @@ static int it821x_config_drive_for_dma (ide_drive_t *drive)
         if (ide_tune_dma(drive))
                 return 0;
 
-        it821x_tuneproc(drive, 255);
+        ide_set_max_pio(drive);
 
         return -1;
 }
@@ -644,7 +630,7 @@ static void __devinit init_hwif_it821x(ide_hwif_t *hwif)
         }
 
         hwif->speedproc = &it821x_tune_chipset;
-        hwif->tuneproc  = &it821x_tuneproc;
+        hwif->set_pio_mode = &it821x_set_pio_mode;
 
         /* MWDMA/PIO clock switching for pass through mode */
         if(!idev->smart) {
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index 65a0ff352b98..d379fbaf6743 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -83,26 +83,22 @@ static u8 __devinit ata66_jmicron(ide_hwif_t *hwif)
         return ATA_CBL_PATA80;
 }
 
-static void jmicron_tuneproc(ide_drive_t *drive, u8 pio)
+static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 5);
         ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
 /**
  *      jmicron_tune_chipset    -       set controller timings
  *      @drive: Drive to set up
- *      @xferspeed: speed we want to achieve
+ *      @speed: speed we want to achieve
  *
  *      As the JMicron snoops for timings all we actually need to do is
- *      make sure we don't set an invalid mode. We do need to honour
- *      the cable detect here.
+ *      set the transfer mode on the device.
  */
 
-static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed)
+static int jmicron_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
-        u8 speed = ide_rate_filter(drive, xferspeed);
-
         return ide_config_drive_speed(drive, speed);
 }
 
@@ -119,7 +115,7 @@ static int jmicron_config_drive_for_dma (ide_drive_t *drive)
         if (ide_tune_dma(drive))
                 return 0;
 
-        jmicron_tuneproc(drive, 255);
+        ide_set_max_pio(drive);
 
         return -1;
 }
@@ -134,7 +130,7 @@ static int jmicron_config_drive_for_dma (ide_drive_t *drive)
 static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
 {
         hwif->speedproc = &jmicron_tune_chipset;
-        hwif->tuneproc  = &jmicron_tuneproc;
+        hwif->set_pio_mode = &jmicron_set_pio_mode;
 
         hwif->drives[0].autotune = 1;
         hwif->drives[1].autotune = 1;
@@ -160,22 +156,13 @@ fallback:
         return;
 }
 
-#define DECLARE_JMB_DEV(name_str)                       \
-        {                                               \
-                .name           = name_str,             \
-                .init_hwif      = init_hwif_jmicron,    \
-                .autodma        = AUTODMA,              \
-                .bootable       = ON_BOARD,             \
-                .enablebits     = { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \
-                .pio_mask       = ATA_PIO5,             \
-        }
-
-static ide_pci_device_t jmicron_chipsets[] __devinitdata = {
-        /* 0 */ DECLARE_JMB_DEV("JMB361"),
-        /* 1 */ DECLARE_JMB_DEV("JMB363"),
-        /* 2 */ DECLARE_JMB_DEV("JMB365"),
-        /* 3 */ DECLARE_JMB_DEV("JMB366"),
-        /* 4 */ DECLARE_JMB_DEV("JMB368"),
+static ide_pci_device_t jmicron_chipset __devinitdata = {
+        .name           = "JMB",
+        .init_hwif      = init_hwif_jmicron,
+        .autodma        = AUTODMA,
+        .bootable       = ON_BOARD,
+        .enablebits     = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
+        .pio_mask       = ATA_PIO5,
 };
 
 /**
@@ -189,35 +176,29 @@ static ide_pci_device_t jmicron_chipsets[] __devinitdata = {
 
 static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
-        ide_setup_pci_device(dev, &jmicron_chipsets[id->driver_data]);
+        ide_setup_pci_device(dev, &jmicron_chipset);
         return 0;
 }
 
-/* If libata is configured, jmicron PCI quirk will configure it such
- * that the SATA ports are in AHCI function while the PATA ports are
- * in a separate IDE function.  In such cases, match device class and
- * attach only to IDE.  If libata isn't configured, keep the old
- * behavior for backward compatibility.
+/* All JMB PATA controllers have and will continue to have the same
+ * interface.  Matching vendor and device class is enough for all
+ * current and future controllers if the controller is programmed
+ * properly.
+ *
+ * If libata is configured, jmicron PCI quirk programs the controller
+ * into the correct mode.  If libata isn't configured, match known
+ * device IDs too to maintain backward compatibility.
  */
-#if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE)
-#define JMB_CLASS       PCI_CLASS_STORAGE_IDE << 8
-#define JMB_CLASS_MASK  0xffff00
-#else
-#define JMB_CLASS       0
-#define JMB_CLASS_MASK  0
-#endif
-
 static struct pci_device_id jmicron_pci_tbl[] = {
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361,
-          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 0},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363,
-          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 1},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365,
-          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 2},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366,
-          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 3},
-        { PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368,
-          PCI_ANY_ID, PCI_ANY_ID, JMB_CLASS, JMB_CLASS_MASK, 4},
+#if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
+        { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
+        { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
+        { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
+        { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
+        { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
+#endif
+        { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+          PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
         { 0, },
 };
 
diff --git a/drivers/ide/pci/opti621.c b/drivers/ide/pci/opti621.c
index 3a2bb2723515..9fa06393469a 100644
--- a/drivers/ide/pci/opti621.c
+++ b/drivers/ide/pci/opti621.c
@@ -47,7 +47,7 @@
  * The main problem with OPTi is that some timings for master
  * and slave must be the same. For example, if you have master
  * PIO 3 and slave PIO 0, driver have to set some timings of
- * master for PIO 0. Second problem is that opti621_tune_drive
+ * master for PIO 0. Second problem is that opti621_set_pio_mode
  * got only one drive to set, but have to set both drives.
  * This is solved in compute_pios. If you don't set
  * the second drive, compute_pios use ide_get_best_pio_mode
@@ -103,7 +103,7 @@
 
 #include <asm/io.h>
 
-#define OPTI621_MAX_PIO 3
+//#define OPTI621_MAX_PIO 3
 /* In fact, I do not have any PIO 4 drive
  * (address: 25 ns, data: 70 ns, recovery: 35 ns),
  * but OPTi 82C621 is programmable and it can do (minimal values):
@@ -136,8 +136,8 @@ static int reg_base;
 #define PIO_NOT_EXIST 254
 #define PIO_DONT_KNOW 255
 
-/* there are stored pio numbers from other calls of opti621_tune_drive */
-static void compute_pios(ide_drive_t *drive, u8 pio)
+/* there are stored pio numbers from other calls of opti621_set_pio_mode */
+static void compute_pios(ide_drive_t *drive, const u8 pio)
 /* Store values into drive->drive_data
  *      second_contr - 0 for primary controller, 1 for secondary
  *      slave_drive - 0 -> pio is for master, 1 -> pio is for slave
@@ -147,12 +147,13 @@ static void compute_pios(ide_drive_t *drive, u8 pio)
         int d;
         ide_hwif_t *hwif = HWIF(drive);
 
-        drive->drive_data = ide_get_best_pio_mode(drive, pio, OPTI621_MAX_PIO);
+        drive->drive_data = pio;
+
         for (d = 0; d < 2; ++d) {
                 drive = &hwif->drives[d];
                 if (drive->present) {
                         if (drive->drive_data == PIO_DONT_KNOW)
-                                drive->drive_data = ide_get_best_pio_mode(drive, 255, OPTI621_MAX_PIO);
+                                drive->drive_data = ide_get_best_pio_mode(drive, 255, 3);
 #ifdef OPTI621_DEBUG
                         printk("%s: Selected PIO mode %d\n",
                                 drive->name, drive->drive_data);
@@ -240,8 +241,7 @@ static void compute_clocks(int pio, pio_clocks_t *clks)
  
 }
 
-/* Main tune procedure, called from tuneproc. */
-static void opti621_tune_drive (ide_drive_t *drive, u8 pio)
+static void opti621_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         /* primary and secondary drives share some registers,
          * so we have to program both drives
@@ -331,7 +331,8 @@ static void __devinit init_hwif_opti621 (ide_hwif_t *hwif)
         hwif->autodma = 0;
         hwif->drives[0].drive_data = PIO_DONT_KNOW;
         hwif->drives[1].drive_data = PIO_DONT_KNOW;
-        hwif->tuneproc = &opti621_tune_drive;
+
+        hwif->set_pio_mode = &opti621_set_pio_mode;
 
         if (!(hwif->dma_base))
                 return;
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 7b0e479c355c..5fb1eedc8194 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -146,14 +146,12 @@ static struct udma_timing {
         { 0x1a, 0x01, 0xcb },   /* UDMA mode 6 */
 };
 
-static int pdcnew_tune_chipset(ide_drive_t *drive, u8 speed)
+static int pdcnew_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         u8 adj                  = (drive->dn & 1) ? 0x08 : 0x00;
         int                     err;
 
-        speed = ide_rate_filter(drive, speed);
-
         /*
          * Issue SETFEATURES_XFER to the drive first. PDC202xx hardware will
          * automatically set the timing registers based on 100 MHz PLL output.
@@ -217,9 +215,8 @@ static int pdcnew_tune_chipset(ide_drive_t *drive, u8 speed)
         return err;
 }
 
-static void pdcnew_tune_drive(ide_drive_t *drive, u8 pio)
+static void pdcnew_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         (void)pdcnew_tune_chipset(drive, XFER_PIO_0 + pio);
 }
 
@@ -239,7 +236,7 @@ static int pdcnew_config_drive_xfer_rate(ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                pdcnew_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -492,7 +489,8 @@ static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
 {
         hwif->autodma = 0;
 
-        hwif->tuneproc  = &pdcnew_tune_drive;
+        hwif->set_pio_mode = &pdcnew_set_pio_mode;
+
         hwif->quirkproc = &pdcnew_quirkproc;
         hwif->speedproc = &pdcnew_tune_chipset;
         hwif->resetproc = &pdcnew_reset;
@@ -524,44 +522,52 @@ static int __devinit init_setup_pdcnew(struct pci_dev *dev, ide_pci_device_t *d)
         return ide_setup_pci_device(dev, d);
 }
 
-static int __devinit init_setup_pdc20270(struct pci_dev *dev,
-                                         ide_pci_device_t *d)
+static int __devinit init_setup_pdc20270(struct pci_dev *dev, ide_pci_device_t *d)
 {
-        struct pci_dev *findev = NULL;
-        int ret;
+        struct pci_dev *bridge = dev->bus->self;
+
+        if (bridge != NULL &&
+            bridge->vendor == PCI_VENDOR_ID_DEC &&
+            bridge->device == PCI_DEVICE_ID_DEC_21150) {
+                struct pci_dev *dev2;
 
-        if ((dev->bus->self &&
-             dev->bus->self->vendor == PCI_VENDOR_ID_DEC) &&
-            (dev->bus->self->device == PCI_DEVICE_ID_DEC_21150)) {
                 if (PCI_SLOT(dev->devfn) & 2)
                         return -ENODEV;
 
-                while ((findev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, findev)) != NULL) {
-                        if ((findev->vendor == dev->vendor) &&
-                            (findev->device == dev->device) &&
-                            (PCI_SLOT(findev->devfn) & 2)) {
-                                if (findev->irq != dev->irq) {
-                                        findev->irq = dev->irq;
-                                }
-                                ret = ide_setup_pci_devices(dev, findev, d);
-                                if (ret < 0)
-                                        pci_dev_put(findev);
-                                return ret;
+                dev2 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn) + 2,
+                                                        PCI_FUNC(dev->devfn)));
+                if (dev2 != NULL &&
+                    dev2->vendor == dev->vendor &&
+                    dev2->device == dev->device) {
+                        int ret;
+
+                        if (dev2->irq != dev->irq) {
+                                dev2->irq = dev->irq;
+
+                                printk(KERN_WARNING "%s: PCI config space "
+                                       "interrupt fixed.\n", d->name);
                         }
+
+                        ret = ide_setup_pci_devices(dev, dev2, d);
+                        if (ret < 0)
+                                pci_dev_put(dev2);
+                        return ret;
                 }
         }
         return ide_setup_pci_device(dev, d);
 }
 
-static int __devinit init_setup_pdc20276(struct pci_dev *dev,
-                                         ide_pci_device_t *d)
+static int __devinit init_setup_pdc20276(struct pci_dev *dev, ide_pci_device_t *d)
 {
-        if ((dev->bus->self) &&
-            (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
-            ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
-             (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
-                printk(KERN_INFO "ide: Skipping Promise PDC20276 "
-                        "attached to I2O RAID controller.\n");
+        struct pci_dev *bridge = dev->bus->self;
+
+        if (bridge != NULL &&
+            bridge->vendor == PCI_VENDOR_ID_INTEL &&
+           (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
+            bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
+
+                printk(KERN_INFO "%s: attached to I2O RAID controller, "
+                                 "skipping.\n", d->name);
                 return -ENODEV;
         }
         return ide_setup_pci_device(dev, d);
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index e19a891171cb..b578307fad51 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -63,12 +63,11 @@ static const char *pdc_quirk_drives[] = {
 
 static void pdc_old_disable_66MHz_clock(ide_hwif_t *);
 
-static int pdc202xx_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int pdc202xx_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
         u8 drive_pci            = 0x60 + (drive->dn << 2);
-        u8 speed                = ide_rate_filter(drive, xferspeed);
 
         u8                      AP = 0, BP = 0, CP = 0;
         u8                      TA = 0, TB = 0, TC = 0;
@@ -143,9 +142,8 @@ static int pdc202xx_tune_chipset (ide_drive_t *drive, u8 xferspeed)
         return ide_config_drive_speed(drive, speed);
 }
 
-static void pdc202xx_tune_drive(ide_drive_t *drive, u8 pio)
+static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         pdc202xx_tune_chipset(drive, XFER_PIO_0 + pio);
 }
 
@@ -191,7 +189,7 @@ static int pdc202xx_config_drive_xfer_rate (ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                pdc202xx_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -307,10 +305,11 @@ static void pdc202xx_reset (ide_drive_t *drive)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         ide_hwif_t *mate        = hwif->mate;
-        
+
         pdc202xx_reset_host(hwif);
         pdc202xx_reset_host(mate);
-        pdc202xx_tune_drive(drive, 255);
+
+        ide_set_max_pio(drive);
 }
 
 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev,
@@ -329,7 +328,9 @@ static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
                 hwif->rqsize = 256;
 
         hwif->autodma = 0;
-        hwif->tuneproc  = &pdc202xx_tune_drive;
+
+        hwif->set_pio_mode = &pdc202xx_set_pio_mode;
+
         hwif->quirkproc = &pdc202xx_quirkproc;
 
         if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246)
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 5cfa9378bbb8..fd8214a7ab98 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -1,5 +1,5 @@
 /*
- *  linux/drivers/ide/pci/piix.c        Version 0.51    Jul 6, 2007
+ *  linux/drivers/ide/pci/piix.c        Version 0.52    Jul 14, 2007
  *
  *  Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
  *  Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
@@ -17,11 +17,11 @@
  *                 41
  *                 43
  *
- * | PIO 0       | c0 | 80 | 0 |        piix_tune_drive(drive, 0);
- * | PIO 2 | SW2 | d0 | 90 | 4 |        piix_tune_drive(drive, 2);
- * | PIO 3 | MW1 | e1 | a1 | 9 |        piix_tune_drive(drive, 3);
- * | PIO 4 | MW2 | e3 | a3 | b |        piix_tune_drive(drive, 4);
- * 
+ * | PIO 0       | c0 | 80 | 0 |
+ * | PIO 2 | SW2 | d0 | 90 | 4 |
+ * | PIO 3 | MW1 | e1 | a1 | 9 |
+ * | PIO 4 | MW2 | e3 | a3 | b |
+ *
  * sitre = word40 & 0x4000; primary
  * sitre = word42 & 0x4000; secondary
  *
@@ -204,16 +204,16 @@ static void piix_tune_pio (ide_drive_t *drive, u8 pio)
 }
 
 /**
- *      piix_tune_drive         -       tune a drive attached to PIIX
+ *      piix_set_pio_mode       -       set PIO mode
  *      @drive: drive to tune
  *      @pio: desired PIO mode
  *
  *      Set the drive's PIO mode (might be useful if drive is not registered
  *      in CMOS for any reason).
  */
-static void piix_tune_drive (ide_drive_t *drive, u8 pio)
+
+static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         piix_tune_pio(drive, pio);
         (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
@@ -221,19 +221,18 @@ static void piix_tune_drive (ide_drive_t *drive, u8 pio)
 /**
  *      piix_tune_chipset       -       tune a PIIX interface
  *      @drive: IDE drive to tune
- *      @xferspeed: speed to configure
+ *      @speed: speed to configure
  *
  *      Set a PIIX interface channel to the desired speeds. This involves
  *      requires the right timing data into the PIIX configuration space
  *      then setting the drive parameters appropriately
  */
- 
-static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+
+static int piix_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
         u8 maslave              = hwif->channel ? 0x42 : 0x40;
-        u8 speed                = ide_rate_filter(drive, xferspeed);
         int a_speed             = 3 << (drive->dn * 4);
         int u_flag              = 1 << drive->dn;
         int v_flag              = 0x01 << drive->dn;
@@ -260,11 +259,6 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                 case XFER_MW_DMA_2:
                 case XFER_MW_DMA_1:
                 case XFER_SW_DMA_2:     break;
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:        break;
                 default:                return -1;
         }
 
@@ -294,10 +288,7 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                         pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
         }
 
-        if (speed > XFER_PIO_4)
-                piix_tune_pio(drive, piix_dma_2_pio(speed));
-        else
-                piix_tune_pio(drive, speed - XFER_PIO_0);
+        piix_tune_pio(drive, piix_dma_2_pio(speed));
 
         return ide_config_drive_speed(drive, speed);
 }
@@ -318,7 +309,7 @@ static int piix_config_drive_xfer_rate (ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                piix_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -455,7 +446,8 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
         }
 
         hwif->autodma = 0;
-        hwif->tuneproc = &piix_tune_drive;
+
+        hwif->set_pio_mode = &piix_set_pio_mode;
         hwif->speedproc = &piix_tune_chipset;
         hwif->drives[0].autotune = 1;
         hwif->drives[1].autotune = 1;
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index 9bdc9694d50d..79ecab689489 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -138,7 +138,7 @@ out:
         return mask;
 }
 
-static int sc1200_tune_chipset(ide_drive_t *drive, u8 mode)
+static int sc1200_tune_chipset(ide_drive_t *drive, const u8 mode)
 {
         ide_hwif_t              *hwif = HWIF(drive);
         int                     unit = drive->select.b.unit;
@@ -146,25 +146,11 @@ static int sc1200_tune_chipset(ide_drive_t *drive, u8 mode)
         unsigned short          pci_clock;
         unsigned int            basereg = hwif->channel ? 0x50 : 0x40;
 
-        mode = ide_rate_filter(drive, mode);
-
         /*
          * Tell the drive to switch to the new mode; abort on failure.
          */
-        if (sc1200_set_xfer_mode(drive, mode)) {
-                printk("SC1200: set xfer mode failure\n");
+        if (sc1200_set_xfer_mode(drive, mode))
                 return 1;       /* failure */
-        }
-
-        switch (mode) {
-        case XFER_PIO_4:
-        case XFER_PIO_3:
-        case XFER_PIO_2:
-        case XFER_PIO_1:
-        case XFER_PIO_0:
-                sc1200_tunepio(drive, mode - XFER_PIO_0);
-                return 0;
-        }
 
         pci_clock = sc1200_get_pci_clock();
 
@@ -274,19 +260,20 @@ static int sc1200_ide_dma_end (ide_drive_t *drive)
 }
 
 /*
- * sc1200_tuneproc() handles selection/setting of PIO modes
+ * sc1200_set_pio_mode() handles setting of PIO modes
  * for both the chipset and drive.
  *
  * All existing BIOSs for this chipset guarantee that all drives
  * will have valid default PIO timings set up before we get here.
  */
-static void sc1200_tuneproc (ide_drive_t *drive, byte pio)      /* mode=255 means "autotune" */
+
+static void sc1200_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         ide_hwif_t      *hwif = HWIF(drive);
         int             mode = -1;
 
         /*
-         * bad abuse of ->tuneproc interface
+         * bad abuse of ->set_pio_mode interface
          */
         switch (pio) {
                 case 200: mode = XFER_UDMA_0;   break;
@@ -304,9 +291,6 @@ static void sc1200_tuneproc (ide_drive_t *drive, byte pio)	/* mode=255 means "au
                 return;
         }
 
-        pio = ide_get_best_pio_mode(drive, pio, 4);
-        printk("SC1200: %s: setting PIO mode%d\n", drive->name, pio);
-
         if (sc1200_set_xfer_mode(drive, XFER_PIO_0 + pio) == 0)
                 sc1200_tunepio(drive, pio);
 }
@@ -422,7 +406,8 @@ static void __devinit init_hwif_sc1200 (ide_hwif_t *hwif)
                 hwif->ide_dma_end   = &sc1200_ide_dma_end;
                 if (!noautodma)
                         hwif->autodma = 1;
-                hwif->tuneproc = &sc1200_tuneproc;
+
+                hwif->set_pio_mode = &sc1200_set_pio_mode;
                 hwif->speedproc = &sc1200_tune_chipset;
         }
         hwif->atapi_dma = 1;
@@ -438,6 +423,7 @@ static ide_pci_device_t sc1200_chipset __devinitdata = {
         .init_hwif      = init_hwif_sc1200,
         .autodma        = AUTODMA,
         .bootable       = ON_BOARD,
+        .host_flags     = IDE_HFLAG_ABUSE_DMA_MODES,
         .pio_mask       = ATA_PIO4,
 };
 
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index eeb0a6d434aa..66a526e0ece4 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -221,9 +221,8 @@ static void scc_tune_pio(ide_drive_t *drive, const u8 pio)
         out_be32((void __iomem *)pioct_port, reg);
 }
 
-static void scc_tuneproc(ide_drive_t *drive, u8 pio)
+static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         scc_tune_pio(drive, pio);
         ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
@@ -231,16 +230,15 @@ static void scc_tuneproc(ide_drive_t *drive, u8 pio)
 /**
  *      scc_tune_chipset        -       tune a drive DMA mode
  *      @drive: Drive to set up
- *      @xferspeed: speed we want to achieve
+ *      @speed: speed we want to achieve
  *
  *      Load the timing settings for this device mode into the
  *      controller.
  */
 
-static int scc_tune_chipset(ide_drive_t *drive, byte xferspeed)
+static int scc_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif = HWIF(drive);
-        u8 speed = ide_rate_filter(drive, xferspeed);
         struct scc_ports *ports = ide_get_hwifdata(hwif);
         unsigned long ctl_base = ports->ctl;
         unsigned long cckctrl_port = ctl_base + 0xff0;
@@ -272,13 +270,6 @@ static int scc_tune_chipset(ide_drive_t *drive, byte xferspeed)
         case XFER_UDMA_0:
                 idx = speed - XFER_UDMA_0;
                 break;
-        case XFER_PIO_4:
-        case XFER_PIO_3:
-        case XFER_PIO_2:
-        case XFER_PIO_1:
-        case XFER_PIO_0:
-                scc_tune_pio(drive, speed - XFER_PIO_0);
-                return ide_config_drive_speed(drive, speed);
         default:
                 return 1;
         }
@@ -317,7 +308,7 @@ static int scc_config_drive_for_dma(ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                scc_tuneproc(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -718,7 +709,7 @@ static void __devinit init_hwif_scc(ide_hwif_t *hwif)
         hwif->dma_setup = scc_dma_setup;
         hwif->ide_dma_end = scc_ide_dma_end;
         hwif->speedproc = scc_tune_chipset;
-        hwif->tuneproc = scc_tuneproc;
+        hwif->set_pio_mode = scc_set_pio_mode;
         hwif->ide_dma_check = scc_config_drive_for_dma;
         hwif->ide_dma_test_irq = scc_dma_test_irq;
         hwif->udma_filter = scc_udma_filter;
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index 9fead2e7d4c8..0351cf210427 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -145,7 +145,7 @@ static void svwks_tune_pio(ide_drive_t *drive, const u8 pio)
         }
 }
 
-static int svwks_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int svwks_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         static const u8 udma_modes[]            = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05 };
         static const u8 dma_modes[]             = { 0x77, 0x21, 0x20 };
@@ -153,16 +153,10 @@ static int svwks_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
-        u8 speed                = ide_rate_filter(drive, xferspeed);
         u8 unit                 = (drive->select.b.unit & 0x01);
 
         u8 ultra_enable  = 0, ultra_timing = 0, dma_timing = 0;
 
-        if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
-                svwks_tune_pio(drive, speed - XFER_PIO_0);
-                return ide_config_drive_speed(drive, speed);
-        }
-
         /* If we are about to put a disk into UDMA mode we screwed up.
            Our code assumes we never _ever_ do this on an OSB4 */
            
@@ -203,9 +197,8 @@ static int svwks_tune_chipset (ide_drive_t *drive, u8 xferspeed)
         return (ide_config_drive_speed(drive, speed));
 }
 
-static void svwks_tune_drive (ide_drive_t *drive, u8 pio)
+static void svwks_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         svwks_tune_pio(drive, pio);
         (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
@@ -218,7 +211,7 @@ static int svwks_config_drive_xfer_rate (ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                svwks_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -390,7 +383,7 @@ static void __devinit init_hwif_svwks (ide_hwif_t *hwif)
         if (!hwif->irq)
                 hwif->irq = hwif->channel ? 15 : 14;
 
-        hwif->tuneproc = &svwks_tune_drive;
+        hwif->set_pio_mode = &svwks_set_pio_mode;
         hwif->speedproc = &svwks_tune_chipset;
         hwif->udma_filter = &svwks_udma_filter;
 
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index 57145767c3df..c292e1de1d56 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -34,6 +34,8 @@
 
 #include <linux/ide.h>
 
+#define DRV_NAME "SGIIOC4"
+
 /* IOC4 Specific Definitions */
 #define IOC4_CMD_OFFSET         0x100
 #define IOC4_CTRL_OFFSET        0x120
@@ -289,15 +291,26 @@ static void sgiioc4_dma_off_quietly(ide_drive_t *drive)
         drive->hwif->dma_host_off(drive);
 }
 
+static int sgiioc4_speedproc(ide_drive_t *drive, const u8 speed)
+{
+        if (speed != XFER_MW_DMA_2)
+                return 1;
+
+        return ide_config_drive_speed(drive, speed);
+}
+
 static int sgiioc4_ide_dma_check(ide_drive_t *drive)
 {
-        /* FIXME: check for available DMA modes */
-        if (ide_config_drive_speed(drive, XFER_MW_DMA_2) != 0) {
-                printk(KERN_WARNING "%s: couldn't set MWDMA2 mode, "
-                                    "using PIO instead\n", drive->name);
-                return -1;
-        } else
+        if (ide_tune_dma(drive))
                 return 0;
+
+        /*
+         * ->set_pio_mode is not implemented currently
+         * so this is just for the completness
+         */
+        ide_set_max_pio(drive);
+
+        return -1;
 }
 
 /* returns 1 if dma irq issued, 0 otherwise */
@@ -353,7 +366,7 @@ sgiioc4_INB(unsigned long port)
 }
 
 /* Creates a dma map for the scatter-gather list entries */
-static void __devinit
+static int __devinit
 ide_dma_sgiioc4(ide_hwif_t * hwif, unsigned long dma_base)
 {
         void __iomem *virt_dma_base;
@@ -369,7 +382,7 @@ ide_dma_sgiioc4(ide_hwif_t * hwif, unsigned long dma_base)
                        "ALREADY in use\n",
                        __FUNCTION__, hwif->name, (void *) dma_base,
                        (void *) dma_base + num_ports - 1);
-                goto dma_alloc_failure;
+                return -1;
         }
 
         virt_dma_base = ioremap(dma_base, num_ports);
@@ -395,7 +408,7 @@ ide_dma_sgiioc4(ide_hwif_t * hwif, unsigned long dma_base)
 
         if (pad) {
                 ide_set_hwifdata(hwif, pad);
-                return;
+                return 0;
         }
 
         pci_free_consistent(hwif->pci_dev,
@@ -413,10 +426,7 @@ dma_pci_alloc_failure:
 dma_remap_failure:
         release_mem_region(dma_base, num_ports);
 
-dma_alloc_failure:
-        /* Disable DMA because we couldnot allocate any DMA maps */
-        hwif->autodma = 0;
-        hwif->atapi_dma = 0;
+        return -1;
 }
 
 /* Initializes the IOC4 DMA Engine */
@@ -581,14 +591,11 @@ static void __devinit
 ide_init_sgiioc4(ide_hwif_t * hwif)
 {
         hwif->mmio = 1;
-        hwif->autodma = 1;
         hwif->atapi_dma = 1;
-        hwif->ultra_mask = 0x0; /* Disable Ultra DMA */
-        hwif->mwdma_mask = 0x2; /* Multimode-2 DMA  */
-        hwif->swdma_mask = 0x2;
+        hwif->mwdma_mask = 0x04;
         hwif->pio_mask = 0x00;
-        hwif->tuneproc = NULL;  /* Sets timing for PIO mode */
-        hwif->speedproc = NULL; /* Sets timing for DMA &/or PIO modes */
+        hwif->set_pio_mode = NULL; /* Sets timing for PIO mode */
+        hwif->speedproc = &sgiioc4_speedproc;
         hwif->selectproc = NULL;/* Use the default routine to select drive */
         hwif->reset_poll = NULL;/* No HBA specific reset_poll needed */
         hwif->pre_reset = NULL; /* No HBA specific pre_set needed */
@@ -615,7 +622,7 @@ ide_init_sgiioc4(ide_hwif_t * hwif)
 }
 
 static int __devinit
-sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
+sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
 {
         unsigned long cmd_base, dma_base, irqport;
         unsigned long bar0, cmd_phys_base, ctl;
@@ -632,7 +639,8 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
                         break;
         }
         if (h == MAX_HWIFS) {
-                printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n", d->name);
+                printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n",
+                                DRV_NAME);
                 return -ENOMEM;
         }
 
@@ -641,7 +649,7 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
         virt_base = ioremap(bar0, pci_resource_len(dev, 0));
         if (virt_base == NULL) {
                 printk(KERN_ERR "%s: Unable to remap BAR 0 address: 0x%lx\n",
-                        d->name, bar0);
+                                DRV_NAME, bar0);
                 return -ENOMEM;
         }
         cmd_base = (unsigned long) virt_base + IOC4_CMD_OFFSET;
@@ -672,7 +680,6 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
         hwif->chipset = ide_pci;
         hwif->pci_dev = dev;
         hwif->channel = 0;      /* Single Channel chip */
-        hwif->cds = (struct ide_pci_device_s *) d;
         hwif->gendev.parent = &dev->dev;/* setup proper ancestral information */
 
         /* The IOC4 uses MMIO rather than Port IO. */
@@ -683,11 +690,14 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
 
         ide_init_sgiioc4(hwif);
 
-        if (dma_base)
-                ide_dma_sgiioc4(hwif, dma_base);
-        else
+        hwif->autodma = 0;
+
+        if (dma_base && ide_dma_sgiioc4(hwif, dma_base) == 0) {
+                hwif->autodma = 1;
+                hwif->drives[1].autodma = hwif->drives[0].autodma = 1;
+        } else
                 printk(KERN_INFO "%s: %s Bus-Master DMA disabled\n",
-                       hwif->name, d->name);
+                                 hwif->name, DRV_NAME);
 
         if (probe_hwif_init(hwif))
                 return -EIO;
@@ -699,7 +709,7 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
 }
 
 static unsigned int __devinit
-pci_init_sgiioc4(struct pci_dev *dev, ide_pci_device_t * d)
+pci_init_sgiioc4(struct pci_dev *dev)
 {
         unsigned int class_rev;
         int ret;
@@ -707,30 +717,20 @@ pci_init_sgiioc4(struct pci_dev *dev, ide_pci_device_t * d)
         pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
         class_rev &= 0xff;
         printk(KERN_INFO "%s: IDE controller at PCI slot %s, revision %d\n",
-                        d->name, pci_name(dev), class_rev);
+                         DRV_NAME, pci_name(dev), class_rev);
         if (class_rev < IOC4_SUPPORTED_FIRMWARE_REV) {
                 printk(KERN_ERR "Skipping %s IDE controller in slot %s: "
-                        "firmware is obsolete - please upgrade to revision"
-                        "46 or higher\n", d->name, pci_name(dev));
+                                "firmware is obsolete - please upgrade to "
+                                "revision46 or higher\n",
+                                DRV_NAME, pci_name(dev));
                 ret = -EAGAIN;
                 goto out;
         }
-        ret = sgiioc4_ide_setup_pci_device(dev, d);
+        ret = sgiioc4_ide_setup_pci_device(dev);
 out:
         return ret;
 }
 
-static ide_pci_device_t sgiioc4_chipset __devinitdata = {
-         /* Channel 0 */
-         .name = "SGIIOC4",
-         .init_hwif = ide_init_sgiioc4,
-         .init_dma = ide_dma_sgiioc4,
-         .autodma = AUTODMA,
-         /* SGI IOC4 doesn't have enablebits. */
-         .bootable = ON_BOARD,
-         .host_flags = IDE_HFLAG_SINGLE,
-};
-
 int
 ioc4_ide_attach_one(struct ioc4_driver_data *idd)
 {
@@ -740,7 +740,7 @@ ioc4_ide_attach_one(struct ioc4_driver_data *idd)
         if (idd->idd_variant == IOC4_VARIANT_PCI_RT)
                 return 0;
 
-        return pci_init_sgiioc4(idd->idd_pdev, &sgiioc4_chipset);
+        return pci_init_sgiioc4(idd->idd_pdev);
 }
 
 static struct ioc4_submodule ioc4_ide_submodule = {
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 50f6d172ef77..5d1e5e52a044 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/ide/pci/siimage.c              Version 1.15    Jun 29 2007
+ * linux/drivers/ide/pci/siimage.c              Version 1.16    Jul 13 2007
  *
  * Copyright (C) 2001-2002      Andre Hedrick <andre@linux-ide.org>
  * Copyright (C) 2003           Red Hat <alan@redhat.com>
@@ -185,7 +185,12 @@ static void sil_tune_pio(ide_drive_t *drive, u8 pio)
         u16 speedp              = 0;
         unsigned long addr      = siimage_seldev(drive, 0x04);
         unsigned long tfaddr    = siimage_selreg(hwif, 0x02);
+        unsigned long base      = (unsigned long)hwif->hwif_data;
         u8 tf_pio               = pio;
+        u8 addr_mask            = hwif->channel ? (hwif->mmio ? 0xF4 : 0x84)
+                                                : (hwif->mmio ? 0xB4 : 0x80);
+        u8 mode                 = 0;
+        u8 unit                 = drive->select.b.unit;
 
         /* trim *taskfile* PIO to the slowest of the master/slave */
         if (pair->present) {
@@ -207,6 +212,11 @@ static void sil_tune_pio(ide_drive_t *drive, u8 pio)
                         hwif->OUTW(hwif->INW(tfaddr-2)|0x200, tfaddr-2);
                 else
                         hwif->OUTW(hwif->INW(tfaddr-2)&~0x200, tfaddr-2);
+
+                mode = hwif->INB(base + addr_mask);
+                mode &= ~(unit ? 0x30 : 0x03);
+                mode |= (unit ? 0x10 : 0x01);
+                hwif->OUTB(mode, base + addr_mask);
         } else {
                 pci_write_config_word(hwif->pci_dev, addr, speedp);
                 pci_write_config_word(hwif->pci_dev, tfaddr, speedt);
@@ -216,12 +226,16 @@ static void sil_tune_pio(ide_drive_t *drive, u8 pio)
                 if (pio > 2)
                         speedp |= 0x200;
                 pci_write_config_word(hwif->pci_dev, tfaddr-2, speedp);
+
+                pci_read_config_byte(hwif->pci_dev, addr_mask, &mode);
+                mode &= ~(unit ? 0x30 : 0x03);
+                mode |= (unit ? 0x10 : 0x01);
+                pci_write_config_byte(hwif->pci_dev, addr_mask, mode);
         }
 }
 
-static void sil_tuneproc(ide_drive_t *drive, u8 pio)
+static void sil_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         sil_tune_pio(drive, pio);
         (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
@@ -229,14 +243,12 @@ static void sil_tuneproc(ide_drive_t *drive, u8 pio)
 /**
  *      siimage_tune_chipset    -       set controller timings
  *      @drive: Drive to set up
- *      @xferspeed: speed we want to achieve
+ *      @speed: speed we want to achieve
  *
- *      Tune the SII chipset for the desired mode. If we can't achieve
- *      the desired mode then tune for a lower one, but ultimately
- *      make the thing work.
+ *      Tune the SII chipset for the desired mode.
  */
- 
-static int siimage_tune_chipset (ide_drive_t *drive, byte xferspeed)
+
+static int siimage_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         u8 ultra6[]             = { 0x0F, 0x0B, 0x07, 0x05, 0x03, 0x02, 0x01 };
         u8 ultra5[]             = { 0x0C, 0x07, 0x05, 0x04, 0x02, 0x01 };
@@ -245,7 +257,6 @@ static int siimage_tune_chipset (ide_drive_t *drive, byte xferspeed)
         ide_hwif_t *hwif        = HWIF(drive);
         u16 ultra = 0, multi    = 0;
         u8 mode = 0, unit       = drive->select.b.unit;
-        u8 speed                = ide_rate_filter(drive, xferspeed);
         unsigned long base      = (unsigned long)hwif->hwif_data;
         u8 scsc = 0, addr_mask  = ((hwif->channel) ?
                                     ((hwif->mmio) ? 0xF4 : 0x84) :
@@ -273,14 +284,6 @@ static int siimage_tune_chipset (ide_drive_t *drive, byte xferspeed)
         scsc = is_sata(hwif) ? 1 : scsc;
 
         switch(speed) {
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:
-                        sil_tune_pio(drive, speed - XFER_PIO_0);
-                        mode |= ((unit) ? 0x10 : 0x01);
-                        break;
                 case XFER_MW_DMA_2:
                 case XFER_MW_DMA_1:
                 case XFER_MW_DMA_0:
@@ -331,7 +334,7 @@ static int siimage_config_drive_for_dma (ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                sil_tuneproc(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -902,7 +905,7 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)
         
         hwif->resetproc = &siimage_reset;
         hwif->speedproc = &siimage_tune_chipset;
-        hwif->tuneproc  = &sil_tuneproc;
+        hwif->set_pio_mode = &sil_set_pio_mode;
         hwif->reset_poll = &siimage_reset_poll;
         hwif->pre_reset = &siimage_pre_reset;
         hwif->udma_filter = &sil_udma_filter;
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 26f24802d3e8..3e18899de631 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/ide/pci/sis5513.c      Version 0.25    Jun 10, 2007
+ * linux/drivers/ide/pci/sis5513.c      Version 0.27    Jul 14, 2007
  *
  * Copyright (C) 1999-2000      Andre Hedrick <andre@linux-ide.org>
  * Copyright (C) 2002           Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
@@ -519,27 +519,18 @@ static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
         }
 }
 
-static int sis5513_tune_drive(ide_drive_t *drive, u8 pio)
+static void sis_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         config_art_rwp_pio(drive, pio);
-        return ide_config_drive_speed(drive, XFER_PIO_0 + pio);
+        (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
-static void sis5513_tuneproc(ide_drive_t *drive, u8 pio)
-{
-        (void)sis5513_tune_drive(drive, pio);
-}
-
-static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int sis5513_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
-
-        u8 drive_pci, reg, speed;
         u32 regdw;
-
-        speed = ide_rate_filter(drive, xferspeed);
+        u8 drive_pci, reg;
 
         /* See config_art_rwp_pio for drive pci config registers */
         drive_pci = 0x40;
@@ -582,9 +573,6 @@ static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                                         regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
                                         regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
                                 } else {
-                                /* if ATA133 disable, we should not set speed above UDMA5 */
-                                        if (speed > XFER_UDMA_5)
-                                                speed = XFER_UDMA_5;
                                         regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
                                         regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
                                 }
@@ -608,12 +596,6 @@ static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                 case XFER_SW_DMA_1:
                 case XFER_SW_DMA_0:
                         break;
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:
-                        return sis5513_tune_drive(drive, speed - XFER_PIO_0);
                 default:
                         BUG();
                         break;
@@ -627,7 +609,7 @@ static int sis5513_config_xfer_rate(ide_drive_t *drive)
         /*
          * TODO: always set PIO mode and remove this
          */
-        sis5513_tuneproc(drive, 255);
+        ide_set_max_pio(drive);
 
         drive->init_speed = 0;
 
@@ -635,11 +617,25 @@ static int sis5513_config_xfer_rate(ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                sis5513_tuneproc(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
 
+static u8 sis5513_ata133_udma_filter(ide_drive_t *drive)
+{
+        struct pci_dev *dev = drive->hwif->pci_dev;
+        int drive_pci;
+        u32 reg54 = 0, regdw = 0;
+
+        pci_read_config_dword(dev, 0x54, &reg54);
+        drive_pci = ((reg54 & 0x40000000) ? 0x70 : 0x40) + drive->dn * 4;
+        pci_read_config_dword(dev, drive_pci, &regdw);
+
+        /* if ATA133 disable, we should not set speed above UDMA5 */
+        return (regdw & 0x08) ? ATA_UDMA6 : ATA_UDMA5;
+}
+
 /* Chip detection and general config */
 static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
 {
@@ -844,9 +840,12 @@ static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
         if (!hwif->irq)
                 hwif->irq = hwif->channel ? 15 : 14;
 
-        hwif->tuneproc = &sis5513_tuneproc;
+        hwif->set_pio_mode = &sis_set_pio_mode;
         hwif->speedproc = &sis5513_tune_chipset;
 
+        if (chipset_family >= ATA_133)
+                hwif->udma_filter = sis5513_ata133_udma_filter;
+
         if (!(hwif->dma_base)) {
                 hwif->drives[0].autotune = 1;
                 hwif->drives[1].autotune = 1;
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 0947cab00595..f492318ba797 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -75,16 +75,12 @@ static unsigned int get_pio_timings(ide_drive_t *drive, u8 pio)
 /*
  * Configure the chipset for PIO mode.
  */
-static u8 sl82c105_tune_pio(ide_drive_t *drive, u8 pio)
+static void sl82c105_tune_pio(ide_drive_t *drive, const u8 pio)
 {
         struct pci_dev *dev     = HWIF(drive)->pci_dev;
         int reg                 = 0x44 + drive->dn * 4;
         u16 drv_ctrl;
 
-        DBG(("sl82c105_tune_pio(drive:%s, pio:%u)\n", drive->name, pio));
-
-        pio = ide_get_best_pio_mode(drive, pio, 5);
-
         drv_ctrl = get_pio_timings(drive, pio);
 
         /*
@@ -106,14 +102,12 @@ static u8 sl82c105_tune_pio(ide_drive_t *drive, u8 pio)
         printk(KERN_DEBUG "%s: selected %s (%dns) (%04X)\n", drive->name,
                           ide_xfer_verbose(pio + XFER_PIO_0),
                           ide_pio_cycle_time(drive, pio), drv_ctrl);
-
-        return pio;
 }
 
 /*
  * Configure the drive and chipset for a new transfer speed.
  */
-static int sl82c105_tune_chipset(ide_drive_t *drive, u8 speed)
+static int sl82c105_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         static u16 mwdma_timings[] = {0x0707, 0x0201, 0x0200};
         u16 drv_ctrl;
@@ -121,8 +115,6 @@ static int sl82c105_tune_chipset(ide_drive_t *drive, u8 speed)
         DBG(("sl82c105_tune_chipset(drive:%s, speed:%s)\n",
              drive->name, ide_xfer_verbose(speed)));
 
-        speed = ide_rate_filter(drive, speed);
-
         switch (speed) {
         case XFER_MW_DMA_2:
         case XFER_MW_DMA_1:
@@ -147,14 +139,6 @@ static int sl82c105_tune_chipset(ide_drive_t *drive, u8 speed)
                         pci_write_config_word(dev, reg, drv_ctrl);
                 }
                 break;
-        case XFER_PIO_5:
-        case XFER_PIO_4:
-        case XFER_PIO_3:
-        case XFER_PIO_2:
-        case XFER_PIO_1:
-        case XFER_PIO_0:
-                (void) sl82c105_tune_pio(drive, speed - XFER_PIO_0);
-                break;
         default:
                 return -1;
         }
@@ -327,11 +311,10 @@ static void sl82c105_resetproc(ide_drive_t *drive)
  * We only deal with PIO mode here - DMA mode 'using_dma' is not
  * initialised at the point that this function is called.
  */
-static void sl82c105_tune_drive(ide_drive_t *drive, u8 pio)
+static void sl82c105_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        DBG(("sl82c105_tune_drive(drive:%s, pio:%u)\n", drive->name, pio));
+        sl82c105_tune_pio(drive, pio);
 
-        pio = sl82c105_tune_pio(drive, pio);
         (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
@@ -399,7 +382,7 @@ static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif)
 
         DBG(("init_hwif_sl82c105(hwif: ide%d)\n", hwif->index));
 
-        hwif->tuneproc          = &sl82c105_tune_drive;
+        hwif->set_pio_mode      = &sl82c105_set_pio_mode;
         hwif->speedproc         = &sl82c105_tune_chipset;
         hwif->selectproc        = &sl82c105_selectproc;
         hwif->resetproc         = &sl82c105_resetproc;
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 628b0664f576..ae8e91324577 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -1,5 +1,5 @@
 /*
- *  linux/drivers/ide/pci/slc90e66.c    Version 0.15    Jul 6, 2007
+ *  linux/drivers/ide/pci/slc90e66.c    Version 0.16    Jul 14, 2007
  *
  *  Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
  *  Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
@@ -95,19 +95,17 @@ static void slc90e66_tune_pio (ide_drive_t *drive, u8 pio)
         spin_unlock_irqrestore(&ide_lock, flags);
 }
 
-static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
+static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         slc90e66_tune_pio(drive, pio);
         (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
-static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int slc90e66_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         struct pci_dev *dev     = hwif->pci_dev;
         u8 maslave              = hwif->channel ? 0x42 : 0x40;
-        u8 speed                = ide_rate_filter(drive, xferspeed);
         int sitre = 0, a_speed  = 7 << (drive->dn * 4);
         int u_speed = 0, u_flag = 1 << drive->dn;
         u16                     reg4042, reg44, reg48, reg4a;
@@ -127,11 +125,6 @@ static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                 case XFER_MW_DMA_2:
                 case XFER_MW_DMA_1:
                 case XFER_SW_DMA_2:     break;
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:        break;
                 default:                return -1;
         }
 
@@ -151,10 +144,7 @@ static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
                         pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
         }
 
-        if (speed > XFER_PIO_4)
-                slc90e66_tune_pio(drive, slc90e66_dma_2_pio(speed));
-        else
-                slc90e66_tune_pio(drive, speed - XFER_PIO_0);
+        slc90e66_tune_pio(drive, slc90e66_dma_2_pio(speed));
 
         return ide_config_drive_speed(drive, speed);
 }
@@ -167,7 +157,7 @@ static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                slc90e66_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -183,7 +173,7 @@ static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif)
                 hwif->irq = hwif->channel ? 15 : 14;
 
         hwif->speedproc = &slc90e66_tune_chipset;
-        hwif->tuneproc  = &slc90e66_tune_drive;
+        hwif->set_pio_mode = &slc90e66_set_pio_mode;
 
         pci_read_config_byte(hwif->pci_dev, 0x47, &reg47);
 
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index ec79bacc30c2..e23b9cfb6eb4 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -13,14 +13,12 @@
 #include <linux/pci.h>
 #include <linux/ide.h>
 
-static int tc86c001_tune_chipset(ide_drive_t *drive, u8 speed)
+static int tc86c001_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif        = HWIF(drive);
         unsigned long scr_port  = hwif->config_data + (drive->dn ? 0x02 : 0x00);
         u16 mode, scr           = hwif->INW(scr_port);
 
-        speed = ide_rate_filter(drive, speed);
-
         switch (speed) {
                 case XFER_UDMA_4:       mode = 0x00c0; break;
                 case XFER_UDMA_3:       mode = 0x00b0; break;
@@ -45,9 +43,8 @@ static int tc86c001_tune_chipset(ide_drive_t *drive, u8 speed)
         return ide_config_drive_speed(drive, speed);
 }
 
-static void tc86c001_tune_drive(ide_drive_t *drive, u8 pio)
+static void tc86c001_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         (void) tc86c001_tune_chipset(drive, XFER_PIO_0 + pio);
 }
 
@@ -173,7 +170,7 @@ static int tc86c001_config_drive_xfer_rate(ide_drive_t *drive)
                 return 0;
 
         if (ide_use_fast_pio(drive))
-                tc86c001_tune_drive(drive, 255);
+                ide_set_max_pio(drive);
 
         return -1;
 }
@@ -195,7 +192,7 @@ static void __devinit init_hwif_tc86c001(ide_hwif_t *hwif)
         /* Store the system control register base for convenience... */
         hwif->config_data = sc_base;
 
-        hwif->tuneproc  = &tc86c001_tune_drive;
+        hwif->set_pio_mode = &tc86c001_set_pio_mode;
         hwif->speedproc = &tc86c001_tune_chipset;
         hwif->busproc   = &tc86c001_busproc;
 
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
index 098692a6d615..c3ff066eea5a 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/pci/triflex.c
@@ -40,7 +40,7 @@
 #include <linux/ide.h>
 #include <linux/init.h>
 
-static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
+static int triflex_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         ide_hwif_t *hwif = HWIF(drive);
         struct pci_dev *dev = hwif->pci_dev;
@@ -48,7 +48,6 @@ static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
         u16 timing = 0;
         u32 triflex_timings = 0;
         u8 unit = (drive->select.b.unit & 0x01);
-        u8 speed = ide_rate_filter(drive, xferspeed);
         
         pci_read_config_dword(dev, channel_offset, &triflex_timings);
         
@@ -94,10 +93,9 @@ static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
         return (ide_config_drive_speed(drive, speed));
 }
 
-static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
+static void triflex_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        int use_pio = ide_get_best_pio_mode(drive, pio, 4);
-        (void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
+        (void)triflex_tune_chipset(drive, XFER_PIO_0 + pio);
 }
 
 static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
@@ -105,14 +103,14 @@ static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
         if (ide_tune_dma(drive))
                 return 0;
 
-        triflex_tune_drive(drive, 255);
+        ide_set_max_pio(drive);
 
         return -1;
 }
 
 static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
 {
-        hwif->tuneproc = &triflex_tune_drive;
+        hwif->set_pio_mode = &triflex_set_pio_mode;
         hwif->speedproc = &triflex_tune_chipset;
 
         if (hwif->dma_base == 0)
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index c10203a32159..378feb491ec4 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -1,6 +1,6 @@
 /*
  *
- * Version 3.47
+ * Version 3.48
  *
  * VIA IDE driver for Linux. Supported southbridges:
  *
@@ -158,7 +158,7 @@ static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing)
  *      by upper layers.
  */
 
-static int via_set_drive(ide_drive_t *drive, u8 speed)
+static int via_set_drive(ide_drive_t *drive, const u8 speed)
 {
         ide_drive_t *peer = HWIF(drive)->drives + (~drive->dn & 1);
         struct via82cxxx_dev *vdev = pci_get_drvdata(drive->hwif->pci_dev);
@@ -195,19 +195,16 @@ static int via_set_drive(ide_drive_t *drive, u8 speed)
 }
 
 /**
- *      via82cxxx_tune_drive    -       PIO setup
- *      @drive: drive to set up
- *      @pio: mode to use (255 for 'best possible')
+ *      via_set_pio_mode        -       PIO setup
+ *      @drive: drive
+ *      @pio: PIO mode number
  *
  *      A callback from the upper layers for PIO-only tuning.
  */
 
-static void via82cxxx_tune_drive(ide_drive_t *drive, u8 pio)
+static void via_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
-        if (pio == 255)
-                pio = ide_get_best_pio_mode(drive, 255, 5);
-
-        via_set_drive(drive, XFER_PIO_0 + min_t(u8, pio, 5));
+        via_set_drive(drive, XFER_PIO_0 + pio);
 }
 
 /**
@@ -220,18 +217,11 @@ static void via82cxxx_tune_drive(ide_drive_t *drive, u8 pio)
  
 static int via82cxxx_ide_dma_check (ide_drive_t *drive)
 {
-        u8 speed = ide_max_dma_mode(drive);
-
-        if (speed == 0) {
-                via82cxxx_tune_drive(drive, 255);
-                return -1;
-        }
-
-        via_set_drive(drive, speed);
-
-        if (drive->autodma)
+        if (ide_tune_dma(drive))
                 return 0;
 
+        ide_set_max_pio(drive);
+
         return -1;
 }
 
@@ -465,7 +455,7 @@ static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
 
         hwif->autodma = 0;
 
-        hwif->tuneproc = &via82cxxx_tune_drive;
+        hwif->set_pio_mode = &via_set_pio_mode;
         hwif->speedproc = &via_set_drive;
 
 
diff --git a/drivers/ide/ppc/mpc8xx.c b/drivers/ide/ppc/mpc8xx.c
index dab79afa9b22..df2e92034f5d 100644
--- a/drivers/ide/ppc/mpc8xx.c
+++ b/drivers/ide/ppc/mpc8xx.c
@@ -45,7 +45,7 @@ static void print_funcid (int func);
 static int check_ide_device (unsigned long base);
 
 static void ide_interrupt_ack (void *dev);
-static void m8xx_ide_tuneproc(ide_drive_t *drive, u8 pio);
+static void m8xx_ide_set_pio_mode(ide_drive_t *drive, const u8 pio);
 
 typedef struct ide_ioport_desc {
         unsigned long   base_off;               /* Offset to PCMCIA memory      */
@@ -314,9 +314,8 @@ m8xx_ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
 #endif  /* CONFIG_IDE_8xx_PCCARD */
         }
 
-        /* register routine to tune PIO mode */
         ide_hwifs[data_port].pio_mask = ATA_PIO4;
-        ide_hwifs[data_port].tuneproc = m8xx_ide_tuneproc;
+        ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
 
         hw->ack_intr = (ide_ack_intr_t *) ide_interrupt_ack;
         /* Enable Harddisk Interrupt,
@@ -401,9 +400,8 @@ void m8xx_ide_init_hwif_ports (hw_regs_t *hw,
                 *irq = ioport_dsc[data_port].irq;
         }
 
-        /* register routine to tune PIO mode */
         ide_hwifs[data_port].pio_mask = ATA_PIO4;
-        ide_hwifs[data_port].tuneproc = m8xx_ide_tuneproc;
+        ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
 
         hw->ack_intr = (ide_ack_intr_t *) ide_interrupt_ack;
         /* Enable Harddisk Interrupt,
@@ -427,24 +425,13 @@ void m8xx_ide_init_hwif_ports (hw_regs_t *hw,
 #define PCMCIA_SL(t) ((t==32) ? 0 : ((t & 0x1F)<<7)) /* Strobe Length   */
 #endif
 
-
 /* Calculate PIO timings */
-static void
-m8xx_ide_tuneproc(ide_drive_t *drive, u8 pio)
+static void m8xx_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
 #if defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_DIRECT)
         volatile pcmconf8xx_t   *pcmp;
         ulong timing, mask, reg;
-#endif
-
-        pio = ide_get_best_pio_mode(drive, pio, 4);
 
-#if 1
-        printk("%s[%d] %s: best PIO mode: %d\n",
-                __FILE__,__LINE__,__FUNCTION__, pio);
-#endif
-
-#if defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_DIRECT)
         pcmp = (pcmconf8xx_t *)(&(((immap_t *)IMAP_ADDR)->im_pcmcia));
 
         mask = ~(PCMCIA_SHT(0xFF) | PCMCIA_SST(0xFF) | PCMCIA_SL(0xFF));
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 2fb047b898aa..f759a5397865 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -6,6 +6,7 @@
  * for doing DMA.
  *
  *  Copyright (C) 1998-2003 Paul Mackerras & Ben. Herrenschmidt
+ *  Copyright (C)      2007 Bartlomiej Zolnierkiewicz
  *
  *  This program is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU General Public License
@@ -311,7 +312,8 @@ static struct kauai_timing	kauai_pio_timings[] =
         { 240   , 0x0800038b },
         { 239   , 0x0800030c },
         { 180   , 0x05000249 },
-        { 120   , 0x04000148 }
+        { 120   , 0x04000148 },
+        { 0     , 0 },
 };
 
 static struct kauai_timing      kauai_mdma_timings[] =
@@ -351,7 +353,8 @@ static struct kauai_timing	shasta_pio_timings[] =
         { 240   , 0x040003cd },
         { 239   , 0x040003cd },
         { 180   , 0x0400028b },
-        { 120   , 0x0400010a }
+        { 120   , 0x0400010a },
+        { 0     , 0 },
 };
 
 static struct kauai_timing      shasta_mdma_timings[] =
@@ -411,8 +414,6 @@ kauai_lookup_timing(struct kauai_timing* table, int cycle_time)
 
 static void pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif);
 static int pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq);
-static int pmac_ide_tune_chipset(ide_drive_t *drive, u8 speed);
-static void pmac_ide_tuneproc(ide_drive_t *drive, u8 pio);
 static void pmac_ide_selectproc(ide_drive_t *drive);
 static void pmac_ide_kauai_selectproc(ide_drive_t *drive);
 
@@ -616,7 +617,7 @@ out:
  * Old tuning functions (called on hdparm -p), sets up drive PIO timings
  */
 static void
-pmac_ide_tuneproc(ide_drive_t *drive, u8 pio)
+pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         u32 *timings;
         unsigned accessTicks, recTicks;
@@ -630,7 +631,6 @@ pmac_ide_tuneproc(ide_drive_t *drive, u8 pio)
         /* which drive is it ? */
         timings = &pmif->timings[drive->select.b.unit & 0x01];
 
-        pio = ide_get_best_pio_mode(drive, pio, 4);
         cycle_time = ide_pio_cycle_time(drive, pio);
 
         switch (pmif->kind) {
@@ -698,8 +698,10 @@ pmac_ide_tuneproc(ide_drive_t *drive, u8 pio)
                 drive->name, pio,  *timings);
 #endif  
 
-        if (drive->select.all == HWIF(drive)->INB(IDE_SELECT_REG))
-                pmac_ide_do_update_timings(drive);
+        if (pmac_ide_do_setfeature(drive, XFER_PIO_0 + pio))
+                return;
+
+        pmac_ide_do_update_timings(drive);
 }
 
 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
@@ -915,13 +917,12 @@ set_timings_mdma(ide_drive_t *drive, int intf_type, u32 *timings, u32 *timings2,
 
 /* 
  * Speedproc. This function is called by the core to set any of the standard
- * timing (PIO, MDMA or UDMA) to both the drive and the controller.
+ * DMA timing (MDMA or UDMA) to both the drive and the controller.
  * You may notice we don't use this function on normal "dma check" operation,
  * our dedicated function is more precise as it uses the drive provided
  * cycle time value. We should probably fix this one to deal with that too...
  */
-static int
-pmac_ide_tune_chipset (ide_drive_t *drive, byte speed)
+static int pmac_ide_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
         int unit = (drive->select.b.unit & 0x01);
         int ret = 0;
@@ -937,17 +938,9 @@ pmac_ide_tune_chipset (ide_drive_t *drive, byte speed)
         switch(speed) {
 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
                 case XFER_UDMA_6:
-                        if (pmif->kind != controller_sh_ata6)
-                                return 1;
                 case XFER_UDMA_5:
-                        if (pmif->kind != controller_un_ata6 &&
-                            pmif->kind != controller_k2_ata6 &&
-                            pmif->kind != controller_sh_ata6)
-                                return 1;
                 case XFER_UDMA_4:
                 case XFER_UDMA_3:
-                        if (drive->hwif->cbl != ATA_CBL_PATA80)
-                                return 1;
                 case XFER_UDMA_2:
                 case XFER_UDMA_1:
                 case XFER_UDMA_0:
@@ -971,13 +964,6 @@ pmac_ide_tune_chipset (ide_drive_t *drive, byte speed)
                 case XFER_SW_DMA_0:
                         return 1;
 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
-                case XFER_PIO_4:
-                case XFER_PIO_3:
-                case XFER_PIO_2:
-                case XFER_PIO_1:
-                case XFER_PIO_0:
-                        pmac_ide_tuneproc(drive, speed & 0x07);
-                        break;
                 default:
                         ret = 1;
         }
@@ -1251,7 +1237,7 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
         hwif->drives[0].unmask = 1;
         hwif->drives[1].unmask = 1;
         hwif->pio_mask = ATA_PIO4;
-        hwif->tuneproc = pmac_ide_tuneproc;
+        hwif->set_pio_mode = pmac_ide_set_pio_mode;
         if (pmif->kind == controller_un_ata6
             || pmif->kind == controller_k2_ata6
             || pmif->kind == controller_sh_ata6)