Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=07af427606667c304a2e965cd51d2c03642e8cae
Commit:     07af427606667c304a2e965cd51d2c03642e8cae
Parent:     fab59375b9543f84d1714f7dd00f5d11e531bd3e
Author:     Sergei Shtylyov <[EMAIL PROTECTED]>
AuthorDate: Sat Mar 3 17:48:53 2007 +0100
Committer:  Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
CommitDate: Sat Mar 3 17:48:53 2007 +0100

    piix/slc90e66: more tuneproc() fixing (take 2)
    
    The tuneproc() method in both these drivers failed to set the drive's own 
speed.
    Fix this by renaming the function and "wrapping around it" the new 
tuneproc()
    method.  Switch back to calling tuneproc() in the PIO fallback code.
    While at it, also convert the rest of the PIO timing code into proper C. :-)
    
    Has been kind of tested on SLC90E66.  I'm too lazy to reboot my box and test
    on ICH4... :-)
    
    [ bart: I quickly tested it on ICH4. ]
    
    Signed-off-by: Sergei Shtylyov <[EMAIL PROTECTED]>
    Signed-off-by: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
---
 drivers/ide/pci/piix.c     |   49 ++++++++++++++++++++++++++-----------------
 drivers/ide/pci/slc90e66.c |   38 ++++++++++++++++++----------------
 2 files changed, 50 insertions(+), 37 deletions(-)

diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 569822f..061d300 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -1,10 +1,10 @@
 /*
- *  linux/drivers/ide/pci/piix.c       Version 0.46    December 3, 2006
+ *  linux/drivers/ide/pci/piix.c       Version 0.47    February 8, 2007
  *
  *  Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
  *  Copyright (C) 1998-2000 Andre Hedrick <[EMAIL PROTECTED]>
  *  Copyright (C) 2003 Red Hat Inc <[EMAIL PROTECTED]>
- *  Copyright (C) 2006 MontaVista Software, Inc. <[EMAIL PROTECTED]>
+ *  Copyright (C) 2006-2007 MontaVista Software, Inc. <[EMAIL PROTECTED]>
  *
  *  May be copied or modified under the terms of the GNU General Public License
  *
@@ -205,14 +205,13 @@ static u8 piix_dma_2_pio (u8 xfer_rate) {
 }
 
 /**
- *     piix_tune_drive         -       tune a drive attached to a PIIX
+ *     piix_tune_pio           -       tune PIIX for PIO mode
  *     @drive: drive to tune
  *     @pio: desired PIO mode
  *
- *     Set the interface PIO mode based upon  the settings done by AMI BIOS
- *     (might be useful if drive is not registered in CMOS for any reason).
+ *     Set the interface PIO mode based upon the settings done by AMI BIOS.
  */
-static void piix_tune_drive (ide_drive_t *drive, u8 pio)
+static void piix_tune_pio (ide_drive_t *drive, u8 pio)
 {
        ide_hwif_t *hwif        = HWIF(drive);
        struct pci_dev *dev     = hwif->pci_dev;
@@ -233,8 +232,6 @@ static void piix_tune_drive (ide_drive_t *drive, u8 pio)
                                        { 2, 1 },
                                        { 2, 3 }, };
 
-       pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
-
        /*
         * Master vs slave is synchronized above us but the slave register is
         * shared by the two hwifs so the corner case of two slave timeouts in
@@ -253,19 +250,20 @@ static void piix_tune_drive (ide_drive_t *drive, u8 pio)
                master_data |=  0x4000;
                master_data &= ~0x0070;
                if (pio > 1) {
-                       /* enable PPE, IE and TIME */
-                       master_data = master_data | (control << 4);
+                       /* Set PPE, IE and TIME */
+                       master_data |= control << 4;
                }
                pci_read_config_byte(dev, slave_port, &slave_data);
-               slave_data = slave_data & (hwif->channel ? 0x0f : 0xf0);
-               slave_data = slave_data | (((timings[pio][0] << 2) | 
timings[pio][1]) << (hwif->channel ? 4 : 0));
+               slave_data &= hwif->channel ? 0x0f : 0xf0;
+               slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) <<
+                              (hwif->channel ? 4 : 0);
        } else {
                master_data &= ~0x3307;
                if (pio > 1) {
                        /* enable PPE, IE and TIME */
-                       master_data = master_data | control;
+                       master_data |= control;
                }
-               master_data = master_data | (timings[pio][0] << 12) | 
(timings[pio][1] << 8);
+               master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8);
        }
        pci_write_config_word(dev, master_port, master_data);
        if (is_slave)
@@ -274,6 +272,21 @@ static void piix_tune_drive (ide_drive_t *drive, u8 pio)
 }
 
 /**
+ *     piix_tune_drive         -       tune a drive attached to PIIX
+ *     @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)
+{
+       pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+       piix_tune_pio(drive, pio);
+       (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
+}
+
+/**
  *     piix_tune_chipset       -       tune a PIIX interface
  *     @drive: IDE drive to tune
  *     @xferspeed: speed to configure
@@ -348,8 +361,8 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 
xferspeed)
                        pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
        }
 
-       piix_tune_drive(drive, piix_dma_2_pio(speed));
-       return (ide_config_drive_speed(drive, speed));
+       piix_tune_pio(drive, piix_dma_2_pio(speed));
+       return ide_config_drive_speed(drive, speed);
 }
 
 /**
@@ -392,9 +405,7 @@ static int piix_config_drive_xfer_rate (ide_drive_t *drive)
                return 0;
 
        if (ide_use_fast_pio(drive))
-               /* Find best PIO mode. */
-               piix_tune_chipset(drive, XFER_PIO_0 +
-                                 ide_get_best_pio_mode(drive, 255, 4, NULL));
+               piix_tune_drive(drive, 255);
 
        return -1;
 }
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index ae7eb58..852ccb3 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -1,8 +1,8 @@
 /*
- *  linux/drivers/ide/pci/slc90e66.c   Version 0.13    December 30, 2006
+ *  linux/drivers/ide/pci/slc90e66.c   Version 0.14    February 8, 2007
  *
  *  Copyright (C) 2000-2002 Andre Hedrick <[EMAIL PROTECTED]>
- *  Copyright (C) 2006 MontaVista Software, Inc. <[EMAIL PROTECTED]>
+ *  Copyright (C) 2006-2007 MontaVista Software, Inc. <[EMAIL PROTECTED]>
  *
  * This is a look-alike variation of the ICH0 PIIX4 Ultra-66,
  * but this keeps the ISA-Bridge and slots alive.
@@ -57,11 +57,7 @@ static u8 slc90e66_dma_2_pio (u8 xfer_rate) {
        }
 }
 
-/*
- *  Based on settings done by AMI BIOS
- *  (might be useful if drive is not registered in CMOS for any reason).
- */
-static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
+static void slc90e66_tune_pio (ide_drive_t *drive, u8 pio)
 {
        ide_hwif_t *hwif        = HWIF(drive);
        struct pci_dev *dev     = hwif->pci_dev;
@@ -80,7 +76,6 @@ static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
                                        { 2, 1 },
                                        { 2, 3 }, };
 
-       pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
        spin_lock_irqsave(&ide_lock, flags);
        pci_read_config_word(dev, master_port, &master_data);
 
@@ -94,19 +89,20 @@ static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
                master_data |=  0x4000;
                master_data &= ~0x0070;
                if (pio > 1) {
-                       /* enable PPE, IE and TIME */
-                       master_data = master_data | (control << 4);
+                       /* Set PPE, IE and TIME */
+                       master_data |= control << 4;
                }
                pci_read_config_byte(dev, slave_port, &slave_data);
-               slave_data = slave_data & (hwif->channel ? 0x0f : 0xf0);
-               slave_data = slave_data | (((timings[pio][0] << 2) | 
timings[pio][1]) << (hwif->channel ? 4 : 0));
+               slave_data &= hwif->channel ? 0x0f : 0xf0;
+               slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) <<
+                              (hwif->channel ? 4 : 0);
        } else {
                master_data &= ~0x3307;
                if (pio > 1) {
                        /* enable PPE, IE and TIME */
-                       master_data = master_data | control;
+                       master_data |= control;
                }
-               master_data = master_data | (timings[pio][0] << 12) | 
(timings[pio][1] << 8);
+               master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8);
        }
        pci_write_config_word(dev, master_port, master_data);
        if (is_slave)
@@ -114,6 +110,13 @@ static void slc90e66_tune_drive (ide_drive_t *drive, u8 
pio)
        spin_unlock_irqrestore(&ide_lock, flags);
 }
 
+static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
+{
+       pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+       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)
 {
        ide_hwif_t *hwif        = HWIF(drive);
@@ -162,8 +165,8 @@ static int slc90e66_tune_chipset (ide_drive_t *drive, u8 
xferspeed)
                        pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
        }
 
-       slc90e66_tune_drive(drive, slc90e66_dma_2_pio(speed));
-       return (ide_config_drive_speed(drive, speed));
+       slc90e66_tune_pio(drive, slc90e66_dma_2_pio(speed));
+       return ide_config_drive_speed(drive, speed);
 }
 
 static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
@@ -185,8 +188,7 @@ static int slc90e66_config_drive_xfer_rate (ide_drive_t 
*drive)
                return 0;
 
        if (ide_use_fast_pio(drive))
-               (void)slc90e66_tune_chipset(drive, XFER_PIO_0 +
-                               ide_get_best_pio_mode(drive, 255, 4, NULL));
+               slc90e66_tune_drive(drive, 255);
 
        return -1;
 }
-
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