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MIPS: Alchemy: pata_platform for DB1200

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The au1xxx-ide driver isn't any faster than pata_platform since it
spends a lot of time busy waiting for DMA to finish; faster PIO/DMA
modes only work on the db1200 with a certain cpu speed, UDMA is broken,
and finally the old IDE layer is on death row, so time to switch to
the newer ATA layer.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/6662/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Manuel Lauss 2014-03-26 15:05:21 +01:00 committed by Ralf Baechle
parent a16afa5327
commit 54ff4a1d17
2 changed files with 14 additions and 10 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

21
arch/mips/alchemy/devboards/db1200.c
View file

@ -35,6 +35,7 @@
#include <linux/spi/spi.h> #include <linux/spi/spi.h>
#include <linux/spi/flash.h> #include <linux/spi/flash.h>
#include <linux/smc91x.h> #include <linux/smc91x.h>
#include <linux/ata_platform.h>
#include <asm/mach-au1x00/au1000.h> #include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1100_mmc.h> #include <asm/mach-au1x00/au1100_mmc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h> #include <asm/mach-au1x00/au1xxx_dbdma.h>
@ -330,32 +331,38 @@ static struct platform_device db1200_eth_dev = {
/**********************************************************************/ /**********************************************************************/
static struct pata_platform_info db1200_ide_info = {
.ioport_shift = DB1200_IDE_REG_SHIFT,
};
#define IDE_ALT_START (14 << DB1200_IDE_REG_SHIFT)
static struct resource db1200_ide_res[] = { static struct resource db1200_ide_res[] = {
[0] = { [0] = {
.start = DB1200_IDE_PHYS_ADDR, .start = DB1200_IDE_PHYS_ADDR,
.end = DB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1, .end = DB1200_IDE_PHYS_ADDR + IDE_ALT_START - 1,
.flags = IORESOURCE_MEM, .flags = IORESOURCE_MEM,
}, },
[1] = { [1] = {
.start = DB1200_IDE_PHYS_ADDR + IDE_ALT_START,
.end = DB1200_IDE_PHYS_ADDR + DB1200_IDE_PHYS_LEN - 1,
.flags = IORESOURCE_MEM,
},
[2] = {
.start = DB1200_IDE_INT, .start = DB1200_IDE_INT,
.end = DB1200_IDE_INT, .end = DB1200_IDE_INT,
.flags = IORESOURCE_IRQ, .flags = IORESOURCE_IRQ,
}, },
[2] = {
.start = AU1200_DSCR_CMD0_DMA_REQ1,
.end = AU1200_DSCR_CMD0_DMA_REQ1,
.flags = IORESOURCE_DMA,
},
}; };
static u64 au1200_ide_dmamask = DMA_BIT_MASK(32); static u64 au1200_ide_dmamask = DMA_BIT_MASK(32);
static struct platform_device db1200_ide_dev = { static struct platform_device db1200_ide_dev = {
.name = "au1200-ide", .name = "pata_platform",
.id = 0, .id = 0,
.dev = { .dev = {
.dma_mask = &au1200_ide_dmamask, .dma_mask = &au1200_ide_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32), .coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &db1200_ide_info,
}, },
.num_resources = ARRAY_SIZE(db1200_ide_res), .num_resources = ARRAY_SIZE(db1200_ide_res),
.resource = db1200_ide_res, .resource = db1200_ide_res,

3
arch/mips/configs/db1xxx_defconfig
View file

@ -115,9 +115,6 @@ CONFIG_MTD_NAND_AU1550=y
CONFIG_MTD_NAND_PLATFORM=y CONFIG_MTD_NAND_PLATFORM=y
CONFIG_EEPROM_AT24=y CONFIG_EEPROM_AT24=y
CONFIG_EEPROM_AT25=y CONFIG_EEPROM_AT25=y
CONFIG_IDE=y
CONFIG_IDE_TASK_IOCTL=y
CONFIG_BLK_DEV_IDE_AU1XXX=y
CONFIG_SCSI_TGT=y CONFIG_SCSI_TGT=y
CONFIG_BLK_DEV_SD=y CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_SG=y CONFIG_CHR_DEV_SG=y