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cmd64x: implement clear_irq() method (take 2)
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Convert the driver's two dma_end() methods into clear_irq() methods -- the
driver will now use the standard dma_end() method implementation, ide_dma_end().

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Sergei Shtylyov authored and Bartlomiej Zolnierkiewicz committed Jun 15, 2009
1 parent 53b987d commit 30e5ffc
Showing 1 changed file with 19 additions and 15 deletions.
34 changes: 19 additions & 15 deletions drivers/ide/cmd64x.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
* Copyright (C) 1998 David S. Miller (davem@redhat.com)
*
* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
* Copyright (C) 2007,2009 MontaVista Software, Inc. <source@mvista.com>
*/

#include <linux/module.h>
Expand Down Expand Up @@ -226,37 +226,32 @@ static void cmd64x_set_dma_mode(ide_drive_t *drive, const u8 speed)
(void) pci_write_config_byte(dev, pciU, regU);
}

static int cmd648_dma_end(ide_drive_t *drive)
static void cmd648_clear_irq(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
unsigned long base = hwif->dma_base - (hwif->channel * 8);
int err = ide_dma_end(drive);
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long base = pci_resource_start(dev, 4);
u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
MRDMODE_INTR_CH0;
u8 mrdmode = inb(base + 1);

/* clear the interrupt bit */
outb((mrdmode & ~(MRDMODE_INTR_CH0 | MRDMODE_INTR_CH1)) | irq_mask,
base + 1);

return err;
}

static int cmd64x_dma_end(ide_drive_t *drive)
static void cmd64x_clear_irq(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
int irq_reg = hwif->channel ? ARTTIM23 : CFR;
u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
CFR_INTR_CH0;
u8 irq_stat = 0;
int err = ide_dma_end(drive);

(void) pci_read_config_byte(dev, irq_reg, &irq_stat);
/* clear the interrupt bit */
(void) pci_write_config_byte(dev, irq_reg, irq_stat | irq_mask);

return err;
}

static int cmd648_dma_test_irq(ide_drive_t *drive)
Expand Down Expand Up @@ -370,14 +365,22 @@ static u8 cmd64x_cable_detect(ide_hwif_t *hwif)
static const struct ide_port_ops cmd64x_port_ops = {
.set_pio_mode = cmd64x_set_pio_mode,
.set_dma_mode = cmd64x_set_dma_mode,
.clear_irq = cmd64x_clear_irq,
.cable_detect = cmd64x_cable_detect,
};

static const struct ide_port_ops cmd648_port_ops = {
.set_pio_mode = cmd64x_set_pio_mode,
.set_dma_mode = cmd64x_set_dma_mode,
.clear_irq = cmd648_clear_irq,
.cable_detect = cmd64x_cable_detect,
};

static const struct ide_dma_ops cmd64x_dma_ops = {
.dma_host_set = ide_dma_host_set,
.dma_setup = ide_dma_setup,
.dma_start = ide_dma_start,
.dma_end = cmd64x_dma_end,
.dma_end = ide_dma_end,
.dma_test_irq = cmd64x_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
Expand All @@ -399,7 +402,7 @@ static const struct ide_dma_ops cmd648_dma_ops = {
.dma_host_set = ide_dma_host_set,
.dma_setup = ide_dma_setup,
.dma_start = ide_dma_start,
.dma_end = cmd648_dma_end,
.dma_end = ide_dma_end,
.dma_test_irq = cmd648_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
Expand All @@ -423,7 +426,7 @@ static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
.name = DRV_NAME,
.init_chipset = init_chipset_cmd64x,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.port_ops = &cmd64x_port_ops,
.port_ops = &cmd648_port_ops,
.dma_ops = &cmd648_dma_ops,
.host_flags = IDE_HFLAG_SERIALIZE |
IDE_HFLAG_ABUSE_PREFETCH,
Expand All @@ -435,7 +438,7 @@ static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
.name = DRV_NAME,
.init_chipset = init_chipset_cmd64x,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.port_ops = &cmd64x_port_ops,
.port_ops = &cmd648_port_ops,
.dma_ops = &cmd648_dma_ops,
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
.pio_mask = ATA_PIO5,
Expand All @@ -446,7 +449,7 @@ static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
.name = DRV_NAME,
.init_chipset = init_chipset_cmd64x,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.port_ops = &cmd64x_port_ops,
.port_ops = &cmd648_port_ops,
.dma_ops = &cmd648_dma_ops,
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
.pio_mask = ATA_PIO5,
Expand Down Expand Up @@ -484,6 +487,7 @@ static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_devic
*/
if (dev->revision < 3) {
d.enablebits[0].reg = 0;
d.port_ops = &cmd64x_port_ops;
if (dev->revision == 1)
d.dma_ops = &cmd646_rev1_dma_ops;
else
Expand Down

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