Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 54ff4a1d authored by Manuel Lauss's avatar Manuel Lauss Committed by Ralf Baechle
Browse files

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: default avatarManuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/6662/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent a16afa53

arch/mips/alchemy/devboards/db1200.c

+14 −7
Original line number Diff line number Diff line
@@ -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,

arch/mips/configs/db1xxx_defconfig

+0 −3
Original line number Diff line number Diff line
@@ -115,9 +115,6 @@ CONFIG_MTD_NAND_AU1550=y 
CONFIG_MTD_NAND_PLATFORM=y

CONFIG_EEPROM_AT24=y

CONFIG_EEPROM_AT25=y

CONFIG_IDE=y

CONFIG_IDE_TASK_IOCTL=y

CONFIG_BLK_DEV_IDE_AU1XXX=y

CONFIG_SCSI_TGT=y

CONFIG_BLK_DEV_SD=y

CONFIG_CHR_DEV_SG=y