From: Bartlomiej Zolnierkiewicz Date: Sat, 2 Feb 2008 18:56:40 +0000 (+0100) Subject: ide: add IDE_HFLAG_NO_{IO32_BIT,UNMASK_IRQS} host flags X-Git-Tag: v2.6.25-rc1~1068^2~54 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=807b90d0be23b8d088d4369b02539dada70f03f4;p=linux-2.6 ide: add IDE_HFLAG_NO_{IO32_BIT,UNMASK_IRQS} host flags * 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 --- diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 802a04ad60..fee898c4a7 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -822,7 +822,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif) 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_hwif_t *hwif) 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; } diff --git a/drivers/ide/legacy/dtc2278.c b/drivers/ide/legacy/dtc2278.c index 7cbf2f1f35..73396f70f2 100644 --- a/drivers/ide/legacy/dtc2278.c +++ b/drivers/ide/legacy/dtc2278.c @@ -89,7 +89,10 @@ static void dtc2278_set_pio_mode(ide_drive_t *drive, const u8 pio) 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); diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c index 484a9287bf..0f4bf5d728 100644 --- 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 *hw, _auide_hwif *ahwif) 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 *dev) 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; diff --git a/drivers/ide/pci/rz1000.c b/drivers/ide/pci/rz1000.c index dd0d18ba00..51676612f7 100644 --- a/drivers/ide/pci/rz1000.c +++ b/drivers/ide/pci/rz1000.c @@ -33,8 +33,7 @@ static void __devinit init_hwif_rz1000 (ide_hwif_t *hwif) } 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); } diff --git a/include/linux/ide.h b/include/linux/ide.h index 04422e5e6d..7b24358a6f 100644 --- 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; @@ -1065,7 +1064,7 @@ 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), @@ -1075,8 +1074,10 @@ 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 */ @@ -1102,8 +1103,10 @@ 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