diff options
| author |   Manuel Lauss <manuel.lauss@gmail.com> | 2014-03-26 15:05:21 +0100 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:21 +0100 |
| commit | 54ff4a1d17325a95926fee560e81d47de678dc03 (patch) | |
| tree | 7b545307c39a7b6029a4da3ca18019c2a0922066 /arch/mips/alchemy | |
| parent | MIPS: Alchemy: fold mach-db1xxx/db1x00 headers into board code (diff) | |
| download | linux-dev-54ff4a1d17325a95926fee560e81d47de678dc03.tar.xz linux-dev-54ff4a1d17325a95926fee560e81d47de678dc03.zip | |
MIPS: Alchemy: pata_platform for DB1200
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>
Diffstat (limited to 'arch/mips/alchemy')
| -rw-r--r-- | arch/mips/alchemy/devboards/db1200.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/arch/mips/alchemy/devboards/db1200.c b/arch/mips/alchemy/devboards/db1200.c index 4bcf2f4e4f93..9e46667f2597 100644 --- a/arch/mips/alchemy/devboards/db1200.c +++ b/arch/mips/alchemy/devboards/db1200.c @@ -35,6 +35,7 @@ #include <linux/spi/spi.h> #include <linux/spi/flash.h> #include <linux/smc91x.h> +#include <linux/ata_platform.h> #include <asm/mach-au1x00/au1000.h> #include <asm/mach-au1x00/au1100_mmc.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[] = { [0] = { .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, }, [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, .end = DB1200_IDE_INT, .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 struct platform_device db1200_ide_dev = { - .name = "au1200-ide", + .name = "pata_platform", .id = 0, .dev = { .dma_mask = &au1200_ide_dmamask, .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &db1200_ide_info, }, .num_resources = ARRAY_SIZE(db1200_ide_res), .resource = db1200_ide_res, |