[PATCH 07/22] ide: add IDE_HFLAG_NO_{IO32_BIT,UNMASK_IRQS} host flags

Bartlomiej Zolnierkiewicz
2008-01-16T23:16:33Z

* Use the same bit for IDE_HFLAG_CS5520 and IDE_HFLAG_VDMA host flags
(both are used only by cs5520 host driver currently).

* Add IDE_HFLAG_NO_IO32_BIT host flag and use it instead of ->no_io_32bit
ide_hwif_t field.

* Add IDE_HFLAG_NO_UNMASK_IRQS host flag, then convert dtc2278 and rz1000
host drivers to use it.

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide-probe.c | 4 +++-
drivers/ide/legacy/dtc2278.c | 10 +++-------
drivers/ide/mips/au1xxx-ide.c | 3 +--
drivers/ide/pci/rz1000.c | 3 +--
include/linux/ide.h | 13 ++++++++-----
5 files changed, 16 insertions(+), 17 deletions(-)

Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -822,7 +822,7 @@ static void ide_port_tune_devices(ide_hw
for (unit = 0; unit < MAX_DRIVES; ++unit) {
ide_drive_t *drive = &hwif->drives[unit];

- if (hwif->no_io_32bit)
+ if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT)
drive->no_io_32bit = 1;
else
drive->no_io_32bit = drive->id->dword_io ? 1 : 0;
@@ -1300,6 +1300,8 @@ static void ide_port_init_devices(ide_hw
drive->io_32bit = 1;
if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS)
drive->unmask = 1;
+ if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS)
+ drive->no_unmask = 1;
if ((hwif->host_flags & IDE_HFLAG_NO_AUTOTUNE) == 0)
drive->autotune = 1;
}
Index: b/drivers/ide/legacy/dtc2278.c
===================================================================
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -89,7 +89,10 @@ static void dtc2278_set_pio_mode(ide_dri
static const struct ide_port_info dtc2278_port_info __initdata = {
.chipset = ide_dtc2278,
.host_flags = IDE_HFLAG_SERIALIZE |
+ IDE_HFLAG_NO_UNMASK_IRQS |
IDE_HFLAG_IO_32BIT |
+ /* disallow ->io_32bit changes */
+ IDE_HFLAG_NO_IO_32BIT |
IDE_HFLAG_NO_DMA |
IDE_HFLAG_NO_AUTOTUNE,
.pio_mask = ATA_PIO4,
@@ -125,14 +128,7 @@ static int __init dtc2278_probe(void)
#endif
local_irq_restore(flags);

- hwif->no_io_32bit = 1; /* disallow ->io_32bit changes */
hwif->set_pio_mode = &dtc2278_set_pio_mode;
- hwif->drives[0].no_unmask = 1;
- hwif->drives[1].no_unmask = 1;
-
- mate->no_io_32bit = 1;
- mate->drives[0].no_unmask = 1;
- mate->drives[1].no_unmask = 1;

ide_device_add(idx, &dtc2278_port_info);

Index: b/drivers/ide/mips/au1xxx-ide.c
===================================================================
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -551,6 +551,7 @@ static void auide_setup_ports(hw_regs_t
static const struct ide_port_info au1xxx_port_info = {
.host_flags = IDE_HFLAG_POST_SET_MODE |
IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
+ IDE_HFLAG_NO_IO_32BIT |
IDE_HFLAG_UNMASK_IRQS,
.pio_mask = ATA_PIO4,
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
@@ -649,8 +650,6 @@ static int au_ide_probe(struct device *d
hwif->select_data = 0; /* no chipset-specific code */
hwif->config_data = 0; /* no chipset-specific code */

- hwif->no_io_32bit = 1;
-
auide_hwif.hwif = hwif;
hwif->hwif_data = &auide_hwif;

Index: b/drivers/ide/pci/rz1000.c
===================================================================
--- a/drivers/ide/pci/rz1000.c
+++ b/drivers/ide/pci/rz1000.c
@@ -33,8 +33,7 @@ static void __devinit init_hwif_rz1000 (
} else {
if (hwif->mate)
hwif->mate->serialized = hwif->serialized = 1;
- hwif->drives[0].no_unmask = 1;
- hwif->drives[1].no_unmask = 1;
+ hwif->host_flags |= IDE_HFLAG_NO_UNMASK_IRQS;
printk(KERN_INFO "%s: serialized, disabled unmasking "
"(buggy RZ1000/RZ1001)\n", hwif->name);
}
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -607,7 +607,6 @@ typedef struct hwif_s {
unsigned reset : 1; /* reset after probe */
unsigned auto_poll : 1; /* supports nop auto-poll */
unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
- unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
unsigned mmio : 1; /* host uses MMIO */

struct device gendev;
@@ -1068,7 +1067,7 @@ enum {
IDE_HFLAG_NO_SET_MODE = (1 << 9),
/* trust BIOS for programming chipset/device for DMA */
IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
- /* host uses VDMA */
+ /* host uses VDMA (tied with IDE_HFLAG_CS5520 for now) */
IDE_HFLAG_VDMA = (1 << 11),
/* ATAPI DMA is unsupported */
IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
@@ -1078,8 +1077,10 @@ enum {
IDE_HFLAG_NO_DMA = (1 << 14),
/* check if host is PCI IDE device before allowing DMA */
IDE_HFLAG_NO_AUTODMA = (1 << 15),
+ /* don't autotune PIO */
+ IDE_HFLAG_NO_AUTOTUNE = (1 << 16),
/* host is CS5510/CS5520 */
- IDE_HFLAG_CS5520 = (1 << 16),
+ IDE_HFLAG_CS5520 = IDE_HFLAG_VDMA,
/* no LBA48 */
IDE_HFLAG_NO_LBA48 = (1 << 17),
/* no LBA48 DMA */
@@ -1105,8 +1106,10 @@ enum {
IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
/* DSC overlap is unsupported */
IDE_HFLAG_NO_DSC = (1 << 29),
- /* don't autotune PIO */
- IDE_HFLAG_NO_AUTOTUNE = (1 << 30),
+ /* never use 32-bit I/O ops */
+ IDE_HFLAG_NO_IO_32BIT = (1 << 30),
+ /* never unmask IRQs */
+ IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31),
};

#ifdef CONFIG_BLK_DEV_OFFBOARD