hpt366: UltraDMA filter for SATA cards (take 2)

The Marvell bridge chips used on HighPoint SATA cards do not seem to support
the UltraDMA modes 1, 2, and 3 as well as any MWDMA modes, so the driver needs
to account for this in the udma_filter() method.  In order to achieve that, do
the following changes:

- install the method for all chips, not only HPT36x/370 and improve the code
  formatting by killing the extra tabs while at it;

- add to the end of the 'switch' statement in the method cases for HPT372[AN]
  and HPT374 chips upon which the known SATA cards are based;

- use hwif->ultra_mask as a default mask for the ide_dma_filter() method to
  behave correctly;

- move the HPT370[A] cases below the HPT36x case for consistency.

While at it, replace the explicit UltraDMA mode masks with ATA_UDMA* constants
all over the driver...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Bob Ham <rah@bash.sh>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 49 insertions, 47 deletions

diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index f87eec970574..39f1c89f7c86 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/ide/pci/hpt366.c               Version 1.11    Aug 11, 2007
+ * linux/drivers/ide/pci/hpt366.c               Version 1.12    Aug 19, 2007
  *
  * Copyright (C) 1999-2003              Andre Hedrick <andre@linux-ide.org>
  * Portions Copyright (C) 2001          Sun Microsystems, Inc.
@@ -114,6 +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
  *      Sergei Shtylyov, <sshtylyov@ru.mvista.com> or <source@mvista.com>
  */
 
@@ -518,42 +519,44 @@ static int check_in_drive_list(ide_drive_t *drive, const char **list)
 }
 
 /*
- *      Note for the future; the SATA hpt37x we must set
- *      either PIO or UDMA modes 0,4,5
+ * The Marvell bridge chips used on the HighPoint SATA cards do not seem
+ * to support the UltraDMA modes 1, 2, and 3 as well as any MWDMA modes...
  */
 
 static u8 hpt3xx_udma_filter(ide_drive_t *drive)
 {
-        struct hpt_info *info   = pci_get_drvdata(HWIF(drive)->pci_dev);
-        u8 mask;
+        ide_hwif_t *hwif        = HWIF(drive);
+        struct hpt_info *info   = pci_get_drvdata(hwif->pci_dev);
+        u8 mask                 = hwif->ultra_mask;
 
         switch (info->chip_type) {
-        case HPT370A:
-                if (!HPT370_ALLOW_ATA100_5 ||
-                    check_in_drive_list(drive, bad_ata100_5))
-                        return 0x1f;
-                else
-                        return 0x3f;
-        case HPT370:
-                if (!HPT370_ALLOW_ATA100_5 ||
-                    check_in_drive_list(drive, bad_ata100_5))
-                        mask = 0x1f;
-                else
-                        mask = 0x3f;
-                break;
         case HPT36x:
                 if (!HPT366_ALLOW_ATA66_4 ||
                     check_in_drive_list(drive, bad_ata66_4))
-                        mask = 0x0f;
-                else
-                        mask = 0x1f;
+                        mask = ATA_UDMA3;
 
                 if (!HPT366_ALLOW_ATA66_3 ||
                     check_in_drive_list(drive, bad_ata66_3))
-                        mask = 0x07;
+                        mask = ATA_UDMA2;
                 break;
+        case HPT370:
+                if (!HPT370_ALLOW_ATA100_5 ||
+                    check_in_drive_list(drive, bad_ata100_5))
+                        mask = ATA_UDMA4;
+                break;
+        case HPT370A:
+                if (!HPT370_ALLOW_ATA100_5 ||
+                    check_in_drive_list(drive, bad_ata100_5))
+                        return ATA_UDMA4;
+        case HPT372 :
+        case HPT372A:
+        case HPT372N:
+        case HPT374 :
+                if (ide_dev_is_sata(drive->id))
+                        mask &= ~0x0e;
+                /* Fall thru */
         default:
-                return 0x7f;
+                return mask;
         }
 
         return check_in_drive_list(drive, bad_ata33) ? 0x00 : mask;
@@ -1236,25 +1239,24 @@ static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const cha
 
 static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
 {
-        struct pci_dev  *dev            = hwif->pci_dev;
-        struct hpt_info *info           = pci_get_drvdata(dev);
-        int serialize                   = HPT_SERIALIZE_IO;
-        u8  scr1 = 0, ata66             = hwif->channel ? 0x01 : 0x02;
-        u8  chip_type                   = info->chip_type;
-        u8  new_mcr, old_mcr            = 0;
+        struct pci_dev  *dev    = hwif->pci_dev;
+        struct hpt_info *info   = pci_get_drvdata(dev);
+        int serialize           = HPT_SERIALIZE_IO;
+        u8  scr1 = 0, ata66     = hwif->channel ? 0x01 : 0x02;
+        u8  chip_type           = info->chip_type;
+        u8  new_mcr, old_mcr    = 0;
 
         /* Cache the channel's MISC. control registers' offset */
-        hwif->select_data               = hwif->channel ? 0x54 : 0x50;
+        hwif->select_data       = hwif->channel ? 0x54 : 0x50;
 
-        hwif->tuneproc                  = &hpt3xx_tune_drive;
-        hwif->speedproc                 = &hpt3xx_tune_chipset;
-        hwif->quirkproc                 = &hpt3xx_quirkproc;
-        hwif->intrproc                  = &hpt3xx_intrproc;
-        hwif->maskproc                  = &hpt3xx_maskproc;
-        hwif->busproc                   = &hpt3xx_busproc;
+        hwif->tuneproc          = &hpt3xx_tune_drive;
+        hwif->speedproc         = &hpt3xx_tune_chipset;
+        hwif->quirkproc         = &hpt3xx_quirkproc;
+        hwif->intrproc          = &hpt3xx_intrproc;
+        hwif->maskproc          = &hpt3xx_maskproc;
+        hwif->busproc           = &hpt3xx_busproc;
 
-        if (chip_type <= HPT370A)
-                hwif->udma_filter       = &hpt3xx_udma_filter;
+        hwif->udma_filter       = &hpt3xx_udma_filter;
 
         /*
          * HPT3xxN chips have some complications:
@@ -1504,19 +1506,19 @@ static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d)
                 d->host_flags |= IDE_HFLAG_SINGLE;
                 d->enablebits[0].mask = d->enablebits[0].val = 0x10;
 
-                d->udma_mask = HPT366_ALLOW_ATA66_3 ?
-                              (HPT366_ALLOW_ATA66_4 ? 0x1f : 0x0f) : 0x07;
+                d->udma_mask = HPT366_ALLOW_ATA66_3 ? (HPT366_ALLOW_ATA66_4 ?
+                               ATA_UDMA4 : ATA_UDMA3) : ATA_UDMA2;
                 break;
         case 3:
         case 4:
-                d->udma_mask = HPT370_ALLOW_ATA100_5 ? 0x3f : 0x1f;
+                d->udma_mask = HPT370_ALLOW_ATA100_5 ? ATA_UDMA5 : ATA_UDMA4;
                 break;
         default:
                 rev = 6;
                 /* fall thru */
         case 5:
         case 6:
-                d->udma_mask = HPT372_ALLOW_ATA133_6 ? 0x7f : 0x3f;
+                d->udma_mask = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5;
                 break;
         }
 
@@ -1577,7 +1579,7 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
                 .init_dma       = init_dma_hpt366,
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-                .udma_mask      = HPT372_ALLOW_ATA133_6 ? 0x7f : 0x3f,
+                .udma_mask      = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5,
                 .bootable       = OFF_BOARD,
                 .extra          = 240,
                 .pio_mask       = ATA_PIO4,
@@ -1589,7 +1591,7 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
                 .init_dma       = init_dma_hpt366,
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-                .udma_mask      = HPT302_ALLOW_ATA133_6 ? 0x7f : 0x3f,
+                .udma_mask      = HPT302_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5,
                 .bootable       = OFF_BOARD,
                 .extra          = 240,
                 .pio_mask       = ATA_PIO4,
@@ -1601,7 +1603,7 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
                 .init_dma       = init_dma_hpt366,
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-                .udma_mask      = HPT371_ALLOW_ATA133_6 ? 0x7f : 0x3f,
+                .udma_mask      = HPT371_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5,
                 .bootable       = OFF_BOARD,
                 .extra          = 240,
                 .pio_mask       = ATA_PIO4,
@@ -1613,7 +1615,7 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
                 .init_dma       = init_dma_hpt366,
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-                .udma_mask      = 0x3f,
+                .udma_mask      = ATA_UDMA5,
                 .bootable       = OFF_BOARD,
                 .extra          = 240,
                 .pio_mask       = ATA_PIO4,
@@ -1625,7 +1627,7 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
                 .init_dma       = init_dma_hpt366,
                 .autodma        = AUTODMA,
                 .enablebits     = {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
-                .udma_mask      = HPT372_ALLOW_ATA133_6 ? 0x7f : 0x3f,
+                .udma_mask      = HPT372_ALLOW_ATA133_6 ? ATA_UDMA6 : ATA_UDMA5,
                 .bootable       = OFF_BOARD,
                 .extra          = 240,
                 .pio_mask       = ATA_PIO4,