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Subject[PATCH 03/18] ide: remove ->dma_{status,command} fields from ide_hwif_t
* Use ->dma_base + offset instead of ->dma_{status,command}
and remove no longer needed ->dma_{status,command}.
While at it:

* Use ATA_DMA_* defines.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide-dma.c | 42 ++++++++++++++++++++---------------------
drivers/ide/ide-iops.c | 4 +--
drivers/ide/pci/cmd64x.c | 12 +++++------
drivers/ide/pci/hpt366.c | 10 ++++-----
drivers/ide/pci/ns87415.c | 14 ++++++-------
drivers/ide/pci/pdc202xx_old.c | 2 -
drivers/ide/pci/piix.c | 4 +--
drivers/ide/pci/scc_pata.c | 38 +++++++++++++++++--------------------
drivers/ide/pci/siimage.c | 4 +--
drivers/ide/pci/sl82c105.c | 4 +--
drivers/ide/pci/tc86c001.c | 13 +++++++-----
include/linux/ide.h | 2 -
12 files changed, 74 insertions(+), 75 deletions(-)
Index: b/drivers/ide/ide-dma.c
===================================================================
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -377,9 +377,10 @@ void ide_dma_host_set(ide_drive_t *drive
dma_stat &= ~(1 << (5 + unit));

if (hwif->host_flags & IDE_HFLAG_MMIO)
- writeb(dma_stat, (void __iomem *)hwif->dma_status);
+ writeb(dma_stat,
+ (void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
else
- outb(dma_stat, hwif->dma_status);
+ outb(dma_stat, hwif->dma_base + ATA_DMA_STATUS);
}

EXPORT_SYMBOL_GPL(ide_dma_host_set);
@@ -475,18 +476,19 @@ int ide_dma_setup(ide_drive_t *drive)

/* specify r/w */
if (mmio)
- writeb(reading, (void __iomem *)hwif->dma_command);
+ writeb(reading, (void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
else
- outb(reading, hwif->dma_command);
+ outb(reading, hwif->dma_base + ATA_DMA_CMD);

/* read DMA status for INTR & ERROR flags */
dma_stat = hwif->read_sff_dma_status(hwif);

/* clear INTR & ERROR flags */
if (mmio)
- writeb(dma_stat | 6, (void __iomem *)hwif->dma_status);
+ writeb(dma_stat | 6,
+ (void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
else
- outb(dma_stat | 6, hwif->dma_status);
+ outb(dma_stat | 6, hwif->dma_base + ATA_DMA_STATUS);

drive->waiting_for_dma = 1;
return 0;
@@ -512,12 +514,13 @@ void ide_dma_start(ide_drive_t *drive)
* we do this part before issuing the drive cmd.
*/
if (hwif->host_flags & IDE_HFLAG_MMIO) {
- dma_cmd = readb((void __iomem *)hwif->dma_command);
+ dma_cmd = readb((void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
/* start DMA */
- writeb(dma_cmd | 1, (void __iomem *)hwif->dma_command);
+ writeb(dma_cmd | 1,
+ (void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
} else {
- dma_cmd = inb(hwif->dma_command);
- outb(dma_cmd | 1, hwif->dma_command);
+ dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
+ outb(dma_cmd | 1, hwif->dma_base + ATA_DMA_CMD);
}

hwif->dma = 1;
@@ -537,12 +540,13 @@ int __ide_dma_end (ide_drive_t *drive)

if (mmio) {
/* get DMA command mode */
- dma_cmd = readb((void __iomem *)hwif->dma_command);
+ dma_cmd = readb((void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
/* stop DMA */
- writeb(dma_cmd & ~1, (void __iomem *)hwif->dma_command);
+ writeb(dma_cmd & ~1,
+ (void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
} else {
- dma_cmd = inb(hwif->dma_command);
- outb(dma_cmd & ~1, hwif->dma_command);
+ dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
+ outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD);
}

/* get DMA status */
@@ -550,9 +554,10 @@ int __ide_dma_end (ide_drive_t *drive)

if (mmio)
/* clear the INTR & ERROR bits */
- writeb(dma_stat | 6, (void __iomem *)hwif->dma_status);
+ writeb(dma_stat | 6,
+ (void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
else
- outb(dma_stat | 6, hwif->dma_status);
+ outb(dma_stat | 6, hwif->dma_base + ATA_DMA_STATUS);

/* purge DMA mappings */
ide_destroy_dmatable(drive);
@@ -888,11 +893,6 @@ void ide_setup_dma(ide_hwif_t *hwif, uns
{
hwif->dma_base = base;

- if (!hwif->dma_command)
- hwif->dma_command = hwif->dma_base + 0;
- if (!hwif->dma_status)
- hwif->dma_status = hwif->dma_base + 2;
-
hwif->dma_ops = &sff_dma_ops;
}

Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -106,9 +106,9 @@ void SELECT_MASK(ide_drive_t *drive, int
static u8 ide_read_sff_dma_status(ide_hwif_t *hwif)
{
if (hwif->host_flags & IDE_HFLAG_MMIO)
- return readb((void __iomem *)hwif->dma_status);
+ return readb((void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
else
- return inb(hwif->dma_status);
+ return inb(hwif->dma_base + ATA_DMA_STATUS);
}

static void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
Index: b/drivers/ide/pci/cmd64x.c
===================================================================
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -262,7 +262,7 @@ static int cmd648_dma_test_irq(ide_drive
unsigned long base = hwif->dma_base - (hwif->channel * 8);
u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
MRDMODE_INTR_CH0;
- u8 dma_stat = inb(hwif->dma_status);
+ u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
u8 mrdmode = inb(base + 1);

#ifdef DEBUG
@@ -286,7 +286,7 @@ static int cmd64x_dma_test_irq(ide_drive
int irq_reg = hwif->channel ? ARTTIM23 : CFR;
u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
CFR_INTR_CH0;
- u8 dma_stat = inb(hwif->dma_status);
+ u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
u8 irq_stat = 0;

(void) pci_read_config_byte(dev, irq_reg, &irq_stat);
@@ -317,13 +317,13 @@ static int cmd646_1_dma_end(ide_drive_t

drive->waiting_for_dma = 0;
/* get DMA status */
- dma_stat = inb(hwif->dma_status);
+ dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
/* read DMA command state */
- dma_cmd = inb(hwif->dma_command);
+ dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
/* stop DMA */
- outb(dma_cmd & ~1, hwif->dma_command);
+ outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD);
/* clear the INTR & ERROR bits */
- outb(dma_stat | 6, hwif->dma_status);
+ outb(dma_stat | 6, hwif->dma_base + ATA_DMA_STATUS);
/* and free any DMA resources */
ide_destroy_dmatable(drive);
/* verify good DMA status */
Index: b/drivers/ide/pci/hpt366.c
===================================================================
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -801,9 +801,9 @@ static void hpt370_irq_timeout(ide_drive
printk(KERN_DEBUG "%s: %d bytes in FIFO\n", drive->name, bfifo & 0x1ff);

/* get DMA command mode */
- dma_cmd = inb(hwif->dma_command);
+ dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
/* stop DMA */
- outb(dma_cmd & ~0x1, hwif->dma_command);
+ outb(dma_cmd & ~0x1, hwif->dma_base + ATA_DMA_CMD);
hpt370_clear_engine(drive);
}

@@ -818,12 +818,12 @@ static void hpt370_dma_start(ide_drive_t
static int hpt370_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
- u8 dma_stat = inb(hwif->dma_status);
+ u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);

if (dma_stat & 0x01) {
/* wait a little */
udelay(20);
- dma_stat = inb(hwif->dma_status);
+ dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
if (dma_stat & 0x01)
hpt370_irq_timeout(drive);
}
@@ -850,7 +850,7 @@ static int hpt374_dma_test_irq(ide_drive
return 0;
}

- dma_stat = inb(hwif->dma_status);
+ dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
/* return 1 if INTR asserted */
if (dma_stat & 4)
return 1;
Index: b/drivers/ide/pci/ns87415.c
===================================================================
--- a/drivers/ide/pci/ns87415.c
+++ b/drivers/ide/pci/ns87415.c
@@ -65,7 +65,7 @@ static u8 superio_ide_inb (unsigned long

static u8 superio_read_sff_dma_status(ide_hwif_t *hwif)
{
- return superio_ide_inb(hwif->dma_status);
+ return superio_ide_inb(hwif->dma_base + ATA_DMA_STATUS);
}

static void superio_tf_read(ide_drive_t *drive, ide_task_t *task)
@@ -208,13 +208,13 @@ static int ns87415_dma_end(ide_drive_t *

drive->waiting_for_dma = 0;
dma_stat = hwif->read_sff_dma_status(hwif);
- /* get dma command mode */
- dma_cmd = inb(hwif->dma_command);
+ /* get DMA command mode */
+ dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
/* stop DMA */
- outb(dma_cmd & ~1, hwif->dma_command);
+ outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD);
/* from ERRATA: clear the INTR & ERROR bits */
- dma_cmd = inb(hwif->dma_command);
- outb(dma_cmd | 6, hwif->dma_command);
+ dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
+ outb(dma_cmd | 6, hwif->dma_base + ATA_DMA_CMD);
/* and free any DMA resources */
ide_destroy_dmatable(drive);
/* verify good DMA status */
@@ -302,7 +302,7 @@ static void __devinit init_hwif_ns87415
if (!hwif->dma_base)
return;

- outb(0x60, hwif->dma_status);
+ outb(0x60, hwif->dma_base + ATA_DMA_STATUS);
}

static const struct ide_port_ops ns87415_port_ops = {
Index: b/drivers/ide/pci/pdc202xx_old.c
===================================================================
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -206,7 +206,7 @@ static int pdc202xx_dma_test_irq(ide_dri
{
ide_hwif_t *hwif = HWIF(drive);
unsigned long high_16 = hwif->extra_base - 16;
- u8 dma_stat = inb(hwif->dma_status);
+ u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
u8 sc1d = inb(high_16 + 0x001d);

if (hwif->channel) {
Index: b/drivers/ide/pci/piix.c
===================================================================
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -227,9 +227,9 @@ static void piix_dma_clear_irq(ide_drive
u8 dma_stat;

/* clear the INTR & ERROR bits */
- dma_stat = inb(hwif->dma_status);
+ dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);
/* Should we force the bit as well ? */
- outb(dma_stat, hwif->dma_status);
+ outb(dma_stat, hwif->dma_base + ATA_DMA_STATUS);
}

struct ich_laptop {
Index: b/drivers/ide/pci/scc_pata.c
===================================================================
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -128,7 +128,7 @@ static u8 scc_ide_inb(unsigned long port

static u8 scc_read_sff_dma_status(ide_hwif_t *hwif)
{
- return (u8)in_be32((void *)hwif->dma_status);
+ return (u8)in_be32((void *)(hwif->dma_base + 4));
}

static void scc_ide_insw(unsigned long port, void *addr, u32 count)
@@ -266,14 +266,14 @@ static void scc_dma_host_set(ide_drive_t
{
ide_hwif_t *hwif = drive->hwif;
u8 unit = (drive->select.b.unit & 0x01);
- u8 dma_stat = scc_ide_inb(hwif->dma_status);
+ u8 dma_stat = scc_ide_inb(hwif->dma_base + 4);

if (on)
dma_stat |= (1 << (5 + unit));
else
dma_stat &= ~(1 << (5 + unit));

- scc_ide_outb(dma_stat, hwif->dma_status);
+ scc_ide_outb(dma_stat, hwif->dma_base + 4);
}

/**
@@ -309,13 +309,13 @@ static int scc_dma_setup(ide_drive_t *dr
out_be32((void __iomem *)(hwif->dma_base + 8), hwif->dmatable_dma);

/* specify r/w */
- out_be32((void __iomem *)hwif->dma_command, reading);
+ out_be32((void __iomem *)hwif->dma_base, reading);

- /* read dma_status for INTR & ERROR flags */
- dma_stat = in_be32((void __iomem *)hwif->dma_status);
+ /* read DMA status for INTR & ERROR flags */
+ dma_stat = in_be32((void __iomem *)(hwif->dma_base + 4));

/* clear INTR & ERROR flags */
- out_be32((void __iomem *)hwif->dma_status, dma_stat|6);
+ out_be32((void __iomem *)(hwif->dma_base + 4), dma_stat | 6);
drive->waiting_for_dma = 1;
return 0;
}
@@ -323,10 +323,10 @@ static int scc_dma_setup(ide_drive_t *dr
static void scc_dma_start(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
- u8 dma_cmd = scc_ide_inb(hwif->dma_command);
+ u8 dma_cmd = scc_ide_inb(hwif->dma_base);

/* start DMA */
- scc_ide_outb(dma_cmd | 1, hwif->dma_command);
+ scc_ide_outb(dma_cmd | 1, hwif->dma_base);
hwif->dma = 1;
wmb();
}
@@ -338,13 +338,13 @@ static int __scc_dma_end(ide_drive_t *dr

drive->waiting_for_dma = 0;
/* get DMA command mode */
- dma_cmd = scc_ide_inb(hwif->dma_command);
+ dma_cmd = scc_ide_inb(hwif->dma_base);
/* stop DMA */
- scc_ide_outb(dma_cmd & ~1, hwif->dma_command);
+ scc_ide_outb(dma_cmd & ~1, hwif->dma_base);
/* get DMA status */
- dma_stat = scc_ide_inb(hwif->dma_status);
+ dma_stat = scc_ide_inb(hwif->dma_base + 4);
/* clear the INTR & ERROR bits */
- scc_ide_outb(dma_stat | 6, hwif->dma_status);
+ scc_ide_outb(dma_stat | 6, hwif->dma_base + 4);
/* purge DMA mappings */
ide_destroy_dmatable(drive);
/* verify good DMA status */
@@ -364,6 +364,7 @@ static int __scc_dma_end(ide_drive_t *dr
static int scc_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
+ void __iomem *dma_base = (void __iomem *)hwif->dma_base;
unsigned long intsts_port = hwif->dma_base + 0x014;
u32 reg;
int dma_stat, data_loss = 0;
@@ -402,7 +403,7 @@ static int scc_dma_end(ide_drive_t *driv
printk(KERN_WARNING "%s: SERROR\n", SCC_PATA_NAME);
out_be32((void __iomem *)intsts_port, INTSTS_SERROR|INTSTS_BMSINT);

- out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
+ out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
continue;
}

@@ -417,7 +418,7 @@ static int scc_dma_end(ide_drive_t *driv

out_be32((void __iomem *)intsts_port, INTSTS_PRERR|INTSTS_BMSINT);

- out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
+ out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
continue;
}

@@ -425,12 +426,12 @@ static int scc_dma_end(ide_drive_t *driv
printk(KERN_WARNING "%s: Response Error\n", SCC_PATA_NAME);
out_be32((void __iomem *)intsts_port, INTSTS_RERR|INTSTS_BMSINT);

- out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
+ out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);
continue;
}

if (reg & INTSTS_ICERR) {
- out_be32((void __iomem *)hwif->dma_command, in_be32((void __iomem *)hwif->dma_command) & ~QCHCD_IOS_SS);
+ out_be32(dma_base, in_be32(dma_base) & ~QCHCD_IOS_SS);

printk(KERN_WARNING "%s: Illegal Configuration\n", SCC_PATA_NAME);
out_be32((void __iomem *)intsts_port, INTSTS_ICERR|INTSTS_BMSINT);
@@ -833,9 +834,6 @@ static void __devinit init_hwif_scc(ide_

ports->hwif = hwif;

- hwif->dma_command = hwif->dma_base;
- hwif->dma_status = hwif->dma_base + 0x04;
-
/* PTERADD */
out_be32((void __iomem *)(hwif->dma_base + 0x018), hwif->dmatable_dma);

Index: b/drivers/ide/pci/siimage.c
===================================================================
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -334,7 +334,7 @@ static int siimage_io_dma_test_irq(ide_d
unsigned long addr = siimage_selreg(hwif, 1);

/* return 1 if INTR asserted */
- if (hwif->INB(hwif->dma_status) & 4)
+ if (inb(hwif->dma_base + ATA_DMA_STATUS) & 4)
return 1;

/* return 1 if Device INTR asserted */
@@ -382,7 +382,7 @@ static int siimage_mmio_dma_test_irq(ide
}

/* return 1 if INTR asserted */
- if (readb((void __iomem *)hwif->dma_status) & 0x04)
+ if (readb((void __iomem *)(hwif->dma_base + ATA_DMA_STATUS)) & 4)
return 1;

/* return 1 if Device INTR asserted */
Index: b/drivers/ide/pci/sl82c105.c
===================================================================
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -157,9 +157,9 @@ static void sl82c105_dma_lost_irq(ide_dr
* Was DMA enabled? If so, disable it - we're resetting the
* host. The IDE layer will be handling the drive for us.
*/
- dma_cmd = inb(hwif->dma_command);
+ dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
if (dma_cmd & 1) {
- outb(dma_cmd & ~1, hwif->dma_command);
+ outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD);
printk("sl82c105: DMA was enabled\n");
}

Index: b/drivers/ide/pci/tc86c001.c
===================================================================
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -63,7 +63,7 @@ static int tc86c001_timer_expiry(ide_dri
ide_hwif_t *hwif = HWIF(drive);
ide_expiry_t *expiry = ide_get_hwifdata(hwif);
ide_hwgroup_t *hwgroup = HWGROUP(drive);
- u8 dma_stat = inb(hwif->dma_status);
+ u8 dma_stat = inb(hwif->dma_base + ATA_DMA_STATUS);

/* Restore a higher level driver's expiry handler first. */
hwgroup->expiry = expiry;
@@ -71,21 +71,24 @@ static int tc86c001_timer_expiry(ide_dri
if ((dma_stat & 5) == 1) { /* DMA active and no interrupt */
unsigned long sc_base = hwif->config_data;
unsigned long twcr_port = sc_base + (drive->dn ? 0x06 : 0x04);
- u8 dma_cmd = inb(hwif->dma_command);
+ u8 dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);

printk(KERN_WARNING "%s: DMA interrupt possibly stuck, "
"attempting recovery...\n", drive->name);

/* Stop DMA */
- outb(dma_cmd & ~0x01, hwif->dma_command);
+ outb(dma_cmd & ~0x01, hwif->dma_base + ATA_DMA_CMD);

/* Setup the dummy DMA transfer */
outw(0, sc_base + 0x0a); /* Sector Count */
outw(0, twcr_port); /* Transfer Word Count 1 or 2 */

/* Start the dummy DMA transfer */
- outb(0x00, hwif->dma_command); /* clear R_OR_WCTR for write */
- outb(0x01, hwif->dma_command); /* set START_STOPBM */
+
+ /* clear R_OR_WCTR for write */
+ outb(0x00, hwif->dma_base + ATA_DMA_CMD);
+ /* set START_STOPBM */
+ outb(0x01, hwif->dma_base + ATA_DMA_CMD);

/*
* If an interrupt was pending, it should come thru shortly.
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -505,8 +505,6 @@ typedef struct hwif_s {
int irq; /* our irq number */

unsigned long dma_base; /* base addr for dma ports */
- unsigned long dma_command; /* dma command register */
- unsigned long dma_status; /* dma status register */

unsigned long config_data; /* for use by chipset-specific code */
unsigned long select_data; /* for use by chipset-specific code */

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