[PATCH 7/9] cs5536: convert to ide2libata
From: Bartlomiej Zolnierkiewicz
Date: Sat Jan 30 2010 - 14:50:27 EST
From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Subject: [PATCH] cs5536: convert to ide2libata
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ata/pata_cs5536.h | 22 +++++
drivers/ide/cs5536.c | 189 +---------------------------------------------
2 files changed, 26 insertions(+), 185 deletions(-)
Index: b/drivers/ata/pata_cs5536.h
===================================================================
--- a/drivers/ata/pata_cs5536.h
+++ b/drivers/ata/pata_cs5536.h
@@ -64,7 +64,11 @@ static int cs5536_write(struct pci_dev *
static void cs5536_program_dtc(struct ata_device *adev, u8 tim)
{
+#ifndef __IDE2LIBATA
struct pci_dev *pdev = to_pci_dev(adev->link->ap->host->dev);
+#else
+ struct pci_dev *pdev = to_pci_dev(adev->hwif->dev);
+#endif
int dshift = adev->devno ? IDE_D1_SHIFT : IDE_D0_SHIFT;
u32 dtc;
@@ -121,11 +125,19 @@ static void cs5536_set_piomode(struct at
int mode = adev->pio_mode - XFER_PIO_0;
int cmdmode = mode;
int cshift = adev->devno ? IDE_CAST_D1_SHIFT : IDE_CAST_D0_SHIFT;
+#ifdef __IDE2LIBATA
+ unsigned long timings = (unsigned long)ide_get_drivedata(adev);
+#endif
u32 cast;
if (pair)
cmdmode = min(mode, pair->pio_mode - XFER_PIO_0);
+#ifdef __IDE2LIBATA
+ timings &= (IDE_DRV_MASK << 8);
+ timings |= drv_timings[mode];
+ ide_set_drivedata(adev, (void *)timings);
+#endif
cs5536_program_dtc(adev, drv_timings[mode]);
cs5536_read(pdev, CAST, &cast);
@@ -160,7 +172,9 @@ static void cs5536_set_dmamode(struct at
u32 etc;
int mode = adev->dma_mode;
int dshift = adev->devno ? IDE_D1_SHIFT : IDE_D0_SHIFT;
-
+#ifdef __IDE2LIBATA
+ unsigned long timings = (unsigned long)ide_get_drivedata(adev);
+#endif
cs5536_read(pdev, ETC, &etc);
if (mode >= XFER_UDMA_0) {
@@ -168,7 +182,13 @@ static void cs5536_set_dmamode(struct at
etc |= udma_timings[mode - XFER_UDMA_0] << dshift;
} else { /* MWDMA */
etc &= ~(IDE_ETC_UDMA_MASK << dshift);
+#ifndef __IDE2LIBATA
cs5536_program_dtc(adev, mwdma_timings[mode - XFER_MW_DMA_0]);
+#else
+ timings &= IDE_DRV_MASK;
+ timings |= mwdma_timings[mode - XFER_MW_DMA_0] << 8;
+ ide_set_drivedata(adev, (void *)timings);
+#endif
}
cs5536_write(pdev, ETC, etc);
Index: b/drivers/ide/cs5536.c
===================================================================
--- a/drivers/ide/cs5536.c
+++ b/drivers/ide/cs5536.c
@@ -1,7 +1,7 @@
/*
* CS5536 PATA support
* (C) 2007 Martin K. Petersen <mkp@xxxxxxx>
- * (C) 2009 Bartlomiej Zolnierkiewicz
+ * (C) 2009-2010 Bartlomiej Zolnierkiewicz
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -15,19 +15,6 @@
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Documentation:
- * Available from AMD web site.
- *
- * The IDE timing registers for the CS5536 live in the Geode Machine
- * Specific Register file and not PCI config space. Most BIOSes
- * virtualize the PCI registers so the chip looks like a standard IDE
- * controller. Unfortunately not all implementations get this right.
- * In particular some have problems with unaligned accesses to the
- * virtualized PCI registers. This driver always does full dword
- * writes to work around the issue. Also, in case of a bad BIOS this
- * driver can be loaded with the "msr=1" parameter which forces using
- * the Machine Specific Registers to configure the device.
*/
#include <linux/kernel.h>
@@ -39,174 +26,8 @@
#define DRV_NAME "cs5536"
-enum {
- MSR_IDE_CFG = 0x51300010,
- PCI_IDE_CFG = 0x40,
-
- CFG = 0,
- DTC = 2,
- CAST = 3,
- ETC = 4,
-
- IDE_CFG_CHANEN = (1 << 1),
- IDE_CFG_CABLE = (1 << 17) | (1 << 16),
-
- IDE_D0_SHIFT = 24,
- IDE_D1_SHIFT = 16,
- IDE_DRV_MASK = 0xff,
-
- IDE_CAST_D0_SHIFT = 6,
- IDE_CAST_D1_SHIFT = 4,
- IDE_CAST_DRV_MASK = 0x3,
-
- IDE_CAST_CMD_SHIFT = 24,
- IDE_CAST_CMD_MASK = 0xff,
-
- IDE_ETC_UDMA_MASK = 0xc0,
-};
-
-static int use_msr;
-
-static int cs5536_read(struct pci_dev *pdev, int reg, u32 *val)
-{
- if (unlikely(use_msr)) {
- u32 dummy;
-
- rdmsr(MSR_IDE_CFG + reg, *val, dummy);
- return 0;
- }
-
- return pci_read_config_dword(pdev, PCI_IDE_CFG + reg * 4, val);
-}
-
-static int cs5536_write(struct pci_dev *pdev, int reg, int val)
-{
- if (unlikely(use_msr)) {
- wrmsr(MSR_IDE_CFG + reg, val, 0);
- return 0;
- }
-
- return pci_write_config_dword(pdev, PCI_IDE_CFG + reg * 4, val);
-}
-
-static void cs5536_program_dtc(ide_drive_t *drive, u8 tim)
-{
- struct pci_dev *pdev = to_pci_dev(drive->hwif->dev);
- int dshift = (drive->dn & 1) ? IDE_D1_SHIFT : IDE_D0_SHIFT;
- u32 dtc;
-
- cs5536_read(pdev, DTC, &dtc);
- dtc &= ~(IDE_DRV_MASK << dshift);
- dtc |= tim << dshift;
- cs5536_write(pdev, DTC, dtc);
-}
-
-/**
- * cs5536_cable_detect - detect cable type
- * @hwif: Port to detect on
- *
- * Perform cable detection for ATA66 capable cable.
- *
- * Returns a cable type.
- */
-
-static int cs5536_cable_detect(ide_hwif_t *hwif)
-{
- struct pci_dev *pdev = to_pci_dev(hwif->dev);
- u32 cfg;
-
- cs5536_read(pdev, CFG, &cfg);
-
- if (cfg & IDE_CFG_CABLE)
- return ATA_CBL_PATA80;
- else
- return ATA_CBL_PATA40;
-}
-
-/**
- * cs5536_set_pio_mode - PIO timing setup
- * @hwif: ATA port
- * @drive: ATA device
- */
-
-static void cs5536_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- static const u8 drv_timings[5] = {
- 0x98, 0x55, 0x32, 0x21, 0x20,
- };
-
- static const u8 addr_timings[5] = {
- 0x2, 0x1, 0x0, 0x0, 0x0,
- };
-
- static const u8 cmd_timings[5] = {
- 0x99, 0x92, 0x90, 0x22, 0x20,
- };
-
- struct pci_dev *pdev = to_pci_dev(hwif->dev);
- ide_drive_t *pair = ide_get_pair_dev(drive);
- int cshift = (drive->dn & 1) ? IDE_CAST_D1_SHIFT : IDE_CAST_D0_SHIFT;
- unsigned long timings = (unsigned long)ide_get_drivedata(drive);
- u32 cast;
- const u8 pio = drive->pio_mode - XFER_PIO_0;
- u8 cmd_pio = pio;
-
- if (pair)
- cmd_pio = min_t(u8, pio, pair->pio_mode - XFER_PIO_0);
-
- timings &= (IDE_DRV_MASK << 8);
- timings |= drv_timings[pio];
- ide_set_drivedata(drive, (void *)timings);
-
- cs5536_program_dtc(drive, drv_timings[pio]);
-
- cs5536_read(pdev, CAST, &cast);
-
- cast &= ~(IDE_CAST_DRV_MASK << cshift);
- cast |= addr_timings[pio] << cshift;
-
- cast &= ~(IDE_CAST_CMD_MASK << IDE_CAST_CMD_SHIFT);
- cast |= cmd_timings[cmd_pio] << IDE_CAST_CMD_SHIFT;
-
- cs5536_write(pdev, CAST, cast);
-}
-
-/**
- * cs5536_set_dma_mode - DMA timing setup
- * @hwif: ATA port
- * @drive: ATA device
- */
-
-static void cs5536_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- static const u8 udma_timings[6] = {
- 0xc2, 0xc1, 0xc0, 0xc4, 0xc5, 0xc6,
- };
-
- static const u8 mwdma_timings[3] = {
- 0x67, 0x21, 0x20,
- };
-
- struct pci_dev *pdev = to_pci_dev(hwif->dev);
- int dshift = (drive->dn & 1) ? IDE_D1_SHIFT : IDE_D0_SHIFT;
- unsigned long timings = (unsigned long)ide_get_drivedata(drive);
- u32 etc;
- const u8 mode = drive->dma_mode;
-
- cs5536_read(pdev, ETC, &etc);
-
- if (mode >= XFER_UDMA_0) {
- etc &= ~(IDE_DRV_MASK << dshift);
- etc |= udma_timings[mode - XFER_UDMA_0] << dshift;
- } else { /* MWDMA */
- etc &= ~(IDE_ETC_UDMA_MASK << dshift);
- timings &= IDE_DRV_MASK;
- timings |= mwdma_timings[mode - XFER_MW_DMA_0] << 8;
- ide_set_drivedata(drive, (void *)timings);
- }
-
- cs5536_write(pdev, ETC, etc);
-}
+#include <linux/ide2libata.h>
+#include "../ata/pata_cs5536.h"
static void cs5536_dma_start(ide_drive_t *drive)
{
@@ -232,8 +53,8 @@ static int cs5536_dma_end(ide_drive_t *d
}
static const struct ide_port_ops cs5536_port_ops = {
- .set_pio_mode = cs5536_set_pio_mode,
- .set_dma_mode = cs5536_set_dma_mode,
+ .set_pio_mode = cs5536_set_piomode,
+ .set_dma_mode = cs5536_set_dmamode,
.cable_detect = cs5536_cable_detect,
};
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/