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Subject[PATCH 49/68] cy82c693: convert to ide2libata
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] cy82c693: convert to ide2libata

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_cypress.h | 30 ++++++++--
drivers/ide/cy82c693.c | 130 +--------------------------------------------
2 files changed, 29 insertions(+), 131 deletions(-)

Index: b/drivers/ata/pata_cypress.h
===================================================================
--- a/drivers/ata/pata_cypress.h
+++ b/drivers/ata/pata_cypress.h
@@ -30,12 +30,31 @@ enum {

static void cy82c693_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
+#ifndef __IDE2LIBATA
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ int bus_speed = 33;
+#else
+ struct pci_dev *pdev = ap->port_no ? to_pci_dev(ap->host->dev2)
+ : to_pci_dev(ap->host->dev);
+ int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
+#endif
+ const unsigned long T = 1000000 / bus_speed;
struct ata_timing t;
- const unsigned long T = 1000000 / 33;
short time_16, time_8;
u32 addr;

+#ifdef __IDE2LIBATA
+ /* select primary or secondary channel */
+ if (ap->port_no > 0) { /* drive is on the secondary channel */
+ pdev = pci_get_slot(pdev->bus, pdev->devfn + 1);
+ if (!pdev) {
+ printk(KERN_ERR "%s: tune_drive: "
+ "Cannot find secondary interface!\n",
+ adev->name);
+ return;
+ }
+ }
+#endif
ata_timing_compute(adev->id, adev->pio_mode, adev->pio_mode, &t, T, 1);

time_16 = clamp_val(t.recover - 1, 0, 15) |
@@ -79,10 +98,11 @@ static void cy82c693_set_dmamode(struct
int reg = CY82_INDEX_CHANNEL0 + ap->port_no;

/* Be afraid, be very afraid. Magic registers in low I/O space */
- outb(reg, 0x22);
- outb(adev->dma_mode - XFER_MW_DMA_0, 0x23);
+ outb(reg, CY82_INDEX_PORT);
+ outb((adev->dma_mode - XFER_MW_DMA_0) |
+ ((adev->dma_mode & 0x10) >> 2), CY82_DATA_PORT);

/* 0x50 gives the best behaviour on the Alpha's using this chip */
- outb(CY82_INDEX_TIMEOUT, 0x22);
- outb(0x50, 0x23);
+ outb(CY82_INDEX_TIMEOUT, CY82_INDEX_PORT);
+ outb(0x50, CY82_DATA_PORT);
}
Index: b/drivers/ide/cy82c693.c
===================================================================
--- a/drivers/ide/cy82c693.c
+++ b/drivers/ide/cy82c693.c
@@ -18,130 +18,8 @@

#define DRV_NAME "cy82c693"

-/*
- * NOTE: the value for busmaster timeout is tricky and I got it by
- * trial and error! By using a to low value will cause DMA timeouts
- * and drop IDE performance, and by using a to high value will cause
- * audio playback to scatter.
- * If you know a better value or how to calc it, please let me know.
- */
-
-/* twice the value written in cy82c693ub datasheet */
-#define BUSMASTER_TIMEOUT 0x50
-/*
- * the value above was tested on my machine and it seems to work okay
- */
-
-/* here are the offset definitions for the registers */
-#define CY82_IDE_CMDREG 0x04
-#define CY82_IDE_ADDRSETUP 0x48
-#define CY82_IDE_MASTER_IOR 0x4C
-#define CY82_IDE_MASTER_IOW 0x4D
-#define CY82_IDE_SLAVE_IOR 0x4E
-#define CY82_IDE_SLAVE_IOW 0x4F
-#define CY82_IDE_MASTER_8BIT 0x50
-#define CY82_IDE_SLAVE_8BIT 0x51
-
-#define CY82_INDEX_PORT 0x22
-#define CY82_DATA_PORT 0x23
-
-#define CY82_INDEX_CHANNEL0 0x30
-#define CY82_INDEX_CHANNEL1 0x31
-#define CY82_INDEX_TIMEOUT 0x32
-
-/*
- * set DMA mode a specific channel for CY82C693
- */
-
-static void cy82c693_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- const u8 mode = drive->dma_mode;
- u8 single = (mode & 0x10) >> 4, index = 0, data = 0;
-
- index = hwif->channel ? CY82_INDEX_CHANNEL1 : CY82_INDEX_CHANNEL0;
-
- data = (mode & 3) | (single << 2);
-
- outb(index, CY82_INDEX_PORT);
- outb(data, CY82_DATA_PORT);
-
- /*
- * note: below we set the value for Bus Master IDE TimeOut Register
- * I'm not absolutly sure what this does, but it solved my problem
- * with IDE DMA and sound, so I now can play sound and work with
- * my IDE driver at the same time :-)
- *
- * If you know the correct (best) value for this register please
- * let me know - ASK
- */
-
- data = BUSMASTER_TIMEOUT;
- outb(CY82_INDEX_TIMEOUT, CY82_INDEX_PORT);
- outb(data, CY82_DATA_PORT);
-}
-
-static void cy82c693_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- struct pci_dev *dev = to_pci_dev(hwif->dev);
- int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
- const unsigned long T = 1000000 / bus_speed;
- unsigned int addrCtrl;
- struct ata_timing t;
- u8 mode = drive->pio_mode, time_16, time_8;
-
- /* select primary or secondary channel */
- if (hwif->index > 0) { /* drive is on the secondary channel */
- dev = pci_get_slot(dev->bus, dev->devfn+1);
- if (!dev) {
- printk(KERN_ERR "%s: tune_drive: "
- "Cannot find secondary interface!\n",
- drive->name);
- return;
- }
- }
-
- ata_timing_compute(drive->id, mode, mode, &t, T, 1);
-
- time_16 = clamp_val(t.recover - 1, 0, 15) |
- (clamp_val(t.active - 1, 0, 15) << 4);
- time_8 = clamp_val(t.act8b - 1, 0, 15) |
- (clamp_val(t.rec8b - 1, 0, 15) << 4);
-
- /* now let's write the clocks registers */
- if ((drive->dn & 1) == 0) {
- /*
- * set master drive
- * address setup control register
- * is 32 bit !!!
- */
- pci_read_config_dword(dev, CY82_IDE_ADDRSETUP, &addrCtrl);
-
- addrCtrl &= (~0xF);
- addrCtrl |= clamp_val(t.setup - 1, 0, 15);
- pci_write_config_dword(dev, CY82_IDE_ADDRSETUP, addrCtrl);
-
- /* now let's set the remaining registers */
- pci_write_config_byte(dev, CY82_IDE_MASTER_IOR, time_16);
- pci_write_config_byte(dev, CY82_IDE_MASTER_IOW, time_16);
- pci_write_config_byte(dev, CY82_IDE_MASTER_8BIT, time_8);
- } else {
- /*
- * set slave drive
- * address setup control register
- * is 32 bit !!!
- */
- pci_read_config_dword(dev, CY82_IDE_ADDRSETUP, &addrCtrl);
-
- addrCtrl &= (~0xF0);
- addrCtrl |= (clamp_val(t.setup - 1, 0, 15) << 4);
- pci_write_config_dword(dev, CY82_IDE_ADDRSETUP, addrCtrl);
-
- /* now let's set the remaining registers */
- pci_write_config_byte(dev, CY82_IDE_SLAVE_IOR, time_16);
- pci_write_config_byte(dev, CY82_IDE_SLAVE_IOW, time_16);
- pci_write_config_byte(dev, CY82_IDE_SLAVE_8BIT, time_8);
- }
-}
+#include <linux/ide2libata.h>
+#include "../ata/pata_cypress.h"

static void __devinit init_iops_cy82c693(ide_hwif_t *hwif)
{
@@ -157,8 +35,8 @@ static void __devinit init_iops_cy82c693
}

static const struct ide_port_ops cy82c693_port_ops = {
- .set_pio_mode = cy82c693_set_pio_mode,
- .set_dma_mode = cy82c693_set_dma_mode,
+ .set_pio_mode = cy82c693_set_piomode,
+ .set_dma_mode = cy82c693_set_dmamode,
};

static const struct ide_port_info cy82c693_chipset __devinitdata = {

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