ethernet cleanup and sata fix - thanks, Chris

SVN-Revision: 27297
2011-06-28 06:54:20 +00:00 · 2011-06-28 06:54:20 +00:00 · e80ebb769f
parent 4c392185a6
commit e80ebb769f
4 changed files with 387 additions and 72 deletions
--- a/target/linux/cns3xxx/config-default
+++ b/target/linux/cns3xxx/config-default
@ -12,10 +12,10 @@ CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
 CONFIG_ARM=y
 CONFIG_ARM_GIC=y
 CONFIG_ARM_L1_CACHE_SHIFT=5
-# CONFIG_ARM_PATCH_PHYS_VIRT is not set
 CONFIG_ARM_THUMB=y
 CONFIG_ATA=y
 # CONFIG_ATA_SFF is not set
+CONFIG_ATA_VERBOSE_ERROR=y
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_COUNT=2
 CONFIG_BLK_DEV_RAM_SIZE=32768
@ -47,7 +47,6 @@ CONFIG_DWC_OTG_MODE=y
 CONFIG_EEPROM_AT24=y
 CONFIG_FRAME_POINTER=y
 # CONFIG_FSNOTIFY is not set
-# CONFIG_FTMAC100 is not set
 CONFIG_GENERIC_ATOMIC64=y
 CONFIG_GENERIC_CLOCKEVENTS=y
 CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
@ -101,7 +100,6 @@ CONFIG_LEDS_GPIO=y
 CONFIG_M25PXX_USE_FAST_READ=y
 CONFIG_MACH_CNS3420VB=y
 CONFIG_MACH_GW2388=y
-# CONFIG_MFD_MAX8997 is not set
 CONFIG_MIGHT_HAVE_PCI=y
 CONFIG_MMC=y
 CONFIG_MMC_BLOCK=y
@ -134,6 +132,7 @@ CONFIG_RD_GZIP=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_DS1672=y
 CONFIG_SATA_AHCI=y
+CONFIG_SATA_AHCI_CNS3XXX=y
 CONFIG_SATA_AHCI_PLATFORM=y
 CONFIG_SCSI=y
 # CONFIG_SCSI_MULTI_LUN is not set
--- a/target/linux/cns3xxx/patches/051-cns3xxx_gigabit.patch
+++ b/target/linux/cns3xxx/patches/051-cns3xxx_gigabit.patch
@ -27,7 +27,7 @@
 obj-$(CONFIG_AMD8111_ETH) += amd8111e.o
 --- /dev/null
 +++ b/drivers/net/cns3xxx_eth.c
-@@ -0,0 +1,1233 @@
+@@ -0,0 +1,1269 @@
 +/*
 + * Cavium CNS3xxx Gigabit driver for Linux
 + *
@ -51,41 +51,71 @@
 +#include <linux/skbuff.h>
 +#include <mach/hardware.h>
 +
-+#define DRV_NAME		"cns3xxx_eth"
+#define DRV_NAME "cns3xxx_eth"
 +
-+#define RX_DESCS		512
-+#define TX_DESCS		512
-+#define SKB_DMA_REALIGN   ((PAGE_SIZE - NET_SKB_PAD) % SMP_CACHE_BYTES)
+#define RX_DESCS 512
+#define TX_DESCS 512
+#define SKB_DMA_REALIGN ((PAGE_SIZE - NET_SKB_PAD) % SMP_CACHE_BYTES)
 +
 +#define RX_POOL_ALLOC_SIZE (sizeof(struct rx_desc) * RX_DESCS)
 +#define TX_POOL_ALLOC_SIZE (sizeof(struct tx_desc) * TX_DESCS)
-+#define REGS_SIZE		0x150
-+#define MAX_MRU			9500
+#define REGS_SIZE 336
+#define MAX_MRU	9500
 +
-+#define NAPI_WEIGHT		64
+#define NAPI_WEIGHT 64
+
+/* MDIO Defines */
+#define MDIO_CMD_COMPLETE 0x00008000
+#define MDIO_WRITE_COMMAND 0x00002000
+#define MDIO_READ_COMMAND 0x00004000
+#define MDIO_REG_OFFSET 8
+#define MDIO_VALUE_OFFSET 16
+
+/* Descritor Defines */
+#define END_OF_RING 0x40000000
+#define FIRST_SEGMENT 0x20000000
+#define LAST_SEGMENT 0x10000000
+#define FORCE_ROUTE 0x04000000
+#define IP_CHECKSUM 0x00040000
+#define UDP_CHECKSUM 0x00020000
+#define TCP_CHECKSUM 0x00010000
 +
 +/* Port Config Defines */
-+#define PORT_DISABLE (1 << 18)
+#define PORT_DISABLE 0x00040000
+#define PROMISC_OFFSET 29
+
+/* Global Config Defines */
+#define UNKNOWN_VLAN_TO_CPU 0x02000000
+#define ACCEPT_CRC_PACKET 0x00200000
+#define CRC_STRIPPING 0x00100000
+
+/* VLAN Config Defines */
+#define NIC_MODE 0x00008000
+#define VLAN_UNAWARE 0x00000001
 +
 +/* DMA AUTO Poll Defines */
-+#define TS_POLL_EN (1 << 5)
-+#define TS_SUSPEND (1 << 4)
-+#define FS_POLL_EN (1 << 1)
-+#define FS_SUSPEND (1 << 0)
+#define TS_POLL_EN 0x00000020
+#define TS_SUSPEND 0x00000010
+#define FS_POLL_EN 0x00000002
+#define FS_SUSPEND 0x00000001
+
+/* DMA Ring Control Defines */
+#define QUEUE_THRESHOLD 0x000000f0
+#define CLR_FS_STATE 0x80000000
 +
 +struct tx_desc
 +{
-+	u32 sdp; // segment data pointer
+	u32 sdp; /* segment data pointer */
 +
 +	union {
 +		struct {
-+			u32 sdl:16; // segment data length
+			u32 sdl:16; /* segment data length */
 +			u32 tco:1;
 +			u32 uco:1;
 +			u32 ico:1;
-+			u32 rsv_1:3; // reserve
+			u32 rsv_1:3; /* reserve */
 +			u32 pri:3;
-+			u32 fp:1; // force priority
+			u32 fp:1; /* force priority */
 +			u32 fr:1;
 +			u32 interrupt:1;
 +			u32 lsd:1;
@ -125,16 +155,16 @@
 +		u32 config2;
 +	};
 +
-+	u8 alignment[16]; // for alignment 32 byte
+	u8 alignment[16]; /* for 32 byte */
 +};
 +
 +struct rx_desc
 +{
-+	u32 sdp; // segment data pointer
+	u32 sdp; /* segment data pointer */
 +
 +	union {
 +		struct {
-+			u32 sdl:16; // segment data length
+			u32 sdl:16; /* segment data length */
 +			u32 l4f:1;
 +			u32 ipf:1;
 +			u32 prot:4;
@ -179,12 +209,12 @@
 +		u32 config2;
 +	};
 +
-+	u8 alignment[16]; // for alignment 32 byte
+	u8 alignment[16]; /* for 32 byte alignment */
 +};
 +
 +
 +struct switch_regs {
-+	u32 phy_control;		/* 000 */
+	u32 phy_control;
 +	u32 phy_auto_addr;
 +	u32 mac_glob_cfg;
 +	u32 mac_cfg[4];
@ -289,22 +319,22 @@
 +	u32 temp = 0;
 +
 +	temp = __raw_readl(&mdio_regs->phy_control);
-+	temp |= (1 << 15);  /* Clear Command Complete bit */
+	temp |= MDIO_CMD_COMPLETE;
 +	__raw_writel(temp, &mdio_regs->phy_control);
 +	udelay(10);
 +
 +	if (write) {
-+		temp = (cmd << 16);
-+		temp |= (1 << 13);	/* Write Command */
+		temp = (cmd << MDIO_VALUE_OFFSET);
+		temp |= MDIO_WRITE_COMMAND;
 +	} else {
-+		temp = (1 << 14);  /* Read Command */
+		temp = MDIO_READ_COMMAND;
 +	}
-+	temp |= ((location & 0x1f) << 8);
+	temp |= ((location & 0x1f) << MDIO_REG_OFFSET);
 +	temp |= (phy_id & 0x1f);
 +
 +	__raw_writel(temp, &mdio_regs->phy_control);
 +
-+	while (((__raw_readl(&mdio_regs->phy_control) & 0x8000) == 0)
+	while (((__raw_readl(&mdio_regs->phy_control) & MDIO_CMD_COMPLETE) == 0)
 +			&& cycles < 5000) {
 +		udelay(1);
 +		cycles++;
@ -317,13 +347,13 @@
 +	}
 +
 +	temp = __raw_readl(&mdio_regs->phy_control);
-+	temp |= (1 << 15);  /* Clear Command Complete bit */
+	temp |= MDIO_CMD_COMPLETE;
 +	__raw_writel(temp, &mdio_regs->phy_control);
 +
 +	if (write)
 +		return 0;
 +
-+	return ((temp >> 16) & 0xFFFF);
+	return ((temp >> MDIO_VALUE_OFFSET) & 0xFFFF);
 +}
 +
 +static int cns3xxx_mdio_read(struct mii_bus *bus, int phy_id, int location)
@ -430,13 +460,11 @@
 +			desc->sdp = dma_map_single(NULL, skb->data,
 +				    mtu, DMA_FROM_DEVICE);
 +			if (dma_mapping_error(NULL, desc->sdp)) {
-+				printk("failed to map\n");
 +				dev_kfree_skb(skb);
 +				/* Failed to map, better luck next time */
 +				goto out;;
 +			}
 +		} else {
-+			printk("failed to alloc\n");
 +			/* Failed to allocate skb, try again next time */
 +			goto out;
 +		}
@ -446,9 +474,10 @@
 +
 +		if (++i == RX_DESCS) {
 +			i = 0;
-+			desc->config0 = 0x70000000 | mtu;
+			desc->config0 = END_OF_RING | FIRST_SEGMENT |
+					LAST_SEGMENT | mtu;
 +		} else {
-+			desc->config0 = 0x30000000 | mtu;
+			desc->config0 = FIRST_SEGMENT | LAST_SEGMENT | mtu;
 +		}
 +	}
 +out:
@ -555,8 +584,6 @@
 +		if (++i == RX_DESCS) i = 0;
 +		next_desc = &(rx_ring)->desc[i];
 +		prefetch(next_desc);
-+		prefetch(next_desc + 4);
-+		prefetch(next_desc + 8);
 +
 +		port_id = desc->sp;
 +		if (port_id == 4)
@ -666,9 +693,13 @@
 +	tx_ring->buff_tab[index] = skb;
 +
 +	if (index == TX_DESCS - 1) {
-+		tx_desc->config0 = 0x74070000 | len;
+		tx_desc->config0 = END_OF_RING | FIRST_SEGMENT | LAST_SEGMENT |
+				   FORCE_ROUTE | IP_CHECKSUM | UDP_CHECKSUM |
+				   TCP_CHECKSUM | len;
 +	} else {
-+		tx_desc->config0 = 0x34070000 | len;
+		tx_desc->config0 = FIRST_SEGMENT | LAST_SEGMENT |
+				   FORCE_ROUTE | IP_CHECKSUM | UDP_CHECKSUM |
+				   TCP_CHECKSUM | len;
 +	}
 +
 +	return NETDEV_TX_OK;
@ -725,14 +756,15 @@
 +	struct _rx_ring *rx_ring = sw->rx_ring;
 +	struct _tx_ring *tx_ring = sw->tx_ring;
 +
-+	__raw_writel(0x0, &sw->regs->fs_dma_ctrl0);
-+	__raw_writel(0x11, &sw->regs->dma_auto_poll_cfg);
-+	__raw_writel(0x000000f0, &sw->regs->dma_ring_ctrl);
-+	__raw_writel(0x800000f0, &sw->regs->dma_ring_ctrl);
+	__raw_writel(0, &sw->regs->fs_dma_ctrl0);
+	__raw_writel(TS_SUSPEND | FS_SUSPEND, &sw->regs->dma_auto_poll_cfg);
+	__raw_writel(QUEUE_THRESHOLD, &sw->regs->dma_ring_ctrl);
+	__raw_writel(CLR_FS_STATE | QUEUE_THRESHOLD, &sw->regs->dma_ring_ctrl);
 +
-+	__raw_writel(0x000000f0, &sw->regs->dma_ring_ctrl);
+	__raw_writel(QUEUE_THRESHOLD, &sw->regs->dma_ring_ctrl);
 +
-+	if (!(rx_dma_pool = dma_pool_create(DRV_NAME, NULL, RX_POOL_ALLOC_SIZE, 32, 0)))
+	if (!(rx_dma_pool = dma_pool_create(DRV_NAME, NULL,
+					    RX_POOL_ALLOC_SIZE, 32, 0)))
 +		return -ENOMEM;
 +
 +	if (!(rx_ring->desc = dma_pool_alloc(rx_dma_pool, GFP_KERNEL,
@ -766,7 +798,8 @@
 +	__raw_writel(rx_ring->phys_addr, &sw->regs->fs_desc_ptr0);
 +	__raw_writel(rx_ring->phys_addr, &sw->regs->fs_desc_base_addr0);
 +
-+	if (!(tx_dma_pool = dma_pool_create(DRV_NAME, NULL, TX_POOL_ALLOC_SIZE, 32, 0)))
+	if (!(tx_dma_pool = dma_pool_create(DRV_NAME, NULL,
+					    TX_POOL_ALLOC_SIZE, 32, 0)))
 +		return -ENOMEM;
 +
 +	if (!(tx_ring->desc = dma_pool_alloc(tx_dma_pool, GFP_KERNEL,
@ -849,7 +882,7 @@
 +		__raw_writel(temp, &sw->regs->mac_cfg[2]);
 +
 +		temp = __raw_readl(&sw->regs->dma_auto_poll_cfg);
-+		temp &= ~(0x11);
+		temp &= ~(TS_SUSPEND | FS_SUSPEND);
 +		__raw_writel(temp, &sw->regs->dma_auto_poll_cfg);
 +
 +		__raw_writel((TS_POLL_EN | FS_POLL_EN), &sw->regs->dma_auto_poll_cfg);
@ -889,8 +922,8 @@
 +		temp |= (PORT_DISABLE);
 +		__raw_writel(temp, &sw->regs->mac_cfg[2]);
 +
-+		temp = 0x11;
-+		__raw_writel(temp, &sw->regs->dma_auto_poll_cfg);
+		__raw_writel(TS_SUSPEND | FS_SUSPEND,
+			     &sw->regs->dma_auto_poll_cfg);
 +	}
 +
 +	netif_carrier_off(dev);
@ -907,14 +940,14 @@
 +
 +	if (dev->flags & IFF_PROMISC) {
 +		if (port->id == 3)
-+			temp |= ((1 << 2) << 29);
+			temp |= ((1 << 2) << PROMISC_OFFSET);
 +		else
-+			temp |= ((1 << port->id) << 29);
+			temp |= ((1 << port->id) << PROMISC_OFFSET);
 +	} else {
 +		if (port->id == 3)
-+			temp &= ~((1 << 2) << 29);
+			temp &= ~((1 << 2) << PROMISC_OFFSET);
 +		else
-+			temp &= ~((1 << port->id) << 29);
+			temp &= ~((1 << port->id) << PROMISC_OFFSET);
 +	}
 +	__raw_writel(temp, &sw->regs->mac_glob_cfg);
 +}
@ -1007,15 +1040,16 @@
 +	sw->mtu = new_mtu;
 +
 +	/* Disable DMA */
-+	temp = 0x11;
-+	__raw_writel(temp, &sw->regs->dma_auto_poll_cfg);
+	__raw_writel(TS_SUSPEND | FS_SUSPEND, &sw->regs->dma_auto_poll_cfg);
 +
 +	for (i = 0; i < RX_DESCS; i++) {
 +		desc = &(rx_ring)->desc[i];
-+		/* Check if we own it, if we do, it will get set correctly when it is re-used */
+		/* Check if we own it, if we do, it will get set correctly
+		 * when it is re-used */
 +		if (!desc->cown) {
 +			skb = rx_ring->buff_tab[i];
-+			dma_unmap_single(NULL, desc->sdp, desc->sdl, DMA_FROM_DEVICE);
+			dma_unmap_single(NULL, desc->sdp, desc->sdl,
+					 DMA_FROM_DEVICE);
 +			dev_kfree_skb(skb);
 +
 +			if ((skb = dev_alloc_skb(new_mtu))) {
@ -1034,15 +1068,17 @@
 +			rx_ring->buff_tab[i] = skb;
 +
 +			if (i == RX_DESCS - 1)
-+				desc->config0 = 0x70000000 | new_mtu;
+				desc->config0 = END_OF_RING | FIRST_SEGMENT |
+						LAST_SEGMENT | new_mtu;
 +			else
-+				desc->config0 = 0x30000000 | new_mtu;
+				desc->config0 = FIRST_SEGMENT |
+						LAST_SEGMENT | new_mtu;
 +		}
 +	}
 +
 +	/* Re-ENABLE DMA */
 +	temp = __raw_readl(&sw->regs->dma_auto_poll_cfg);
-+	temp &= ~(0x11);
+	temp &= ~(TS_SUSPEND | FS_SUSPEND);
 +	__raw_writel(temp, &sw->regs->dma_auto_poll_cfg);
 +
 +	__raw_writel((TS_POLL_EN | FS_POLL_EN), &sw->regs->dma_auto_poll_cfg);
@ -1105,11 +1141,11 @@
 +	__raw_writel(temp, &sw->regs->mac_cfg[2]);
 +
 +	temp = __raw_readl(&sw->regs->vlan_cfg);
-+	temp |= ((1 << 15) | (1 << 0));
+	temp |= NIC_MODE | VLAN_UNAWARE;
 +	__raw_writel(temp, &sw->regs->vlan_cfg);
 +
-+	temp = 0x02300000;
-+	__raw_writel(temp, &sw->regs->mac_glob_cfg);
+	__raw_writel(UNKNOWN_VLAN_TO_CPU | ACCEPT_CRC_PACKET |
+		     CRC_STRIPPING, &sw->regs->mac_glob_cfg);
 +
 +	if (!(sw->rx_ring = kmalloc(sizeof(struct _rx_ring), GFP_KERNEL))) {
 +		err = -ENOMEM;
--- a/target/linux/cns3xxx/patches/100-laguna_support.patch
+++ b/target/linux/cns3xxx/patches/100-laguna_support.patch
@ -1,6 +1,6 @@
 --- /dev/null
 +++ b/arch/arm/mach-cns3xxx/laguna.c
-@@ -0,0 +1,671 @@
+@@ -0,0 +1,761 @@
 +/*
 + * Gateworks Corporation Laguna Platform
 + *
@ -201,11 +201,91 @@
 +		.name = "user2", /* Red Led */
 +		.gpio = 114,
 +		.active_low = 1,
+	},{
+		.name = "pwr1", /* Green Led */
+		.gpio = 116,
+		.active_low = 1,
+	},{
+		.name = "pwr2", /* Yellow Led */
+		.gpio = 117,
+		.active_low = 1,
+	},{
+		.name = "txd1", /* Green Led */
+		.gpio = 118,
+		.active_low = 1,
+	},{
+		.name = "txd2", /* Yellow Led */
+		.gpio = 119,
+		.active_low = 1,
+	},{
+		.name = "rxd1", /* Green Led */
+		.gpio = 120,
+		.active_low = 1,
+	},{
+		.name = "rxd2", /* Yellow Led */
+		.gpio = 121,
+		.active_low = 1,
+	},{
+		.name = "ser1", /* Green Led */
+		.gpio = 122,
+		.active_low = 1,
+	},{
+		.name = "ser2", /* Yellow Led */
+		.gpio = 123,
+		.active_low = 1,
+	},{
+		.name = "enet1", /* Green Led */
+		.gpio = 124,
+		.active_low = 1,
+	},{
+		.name = "enet2", /* Yellow Led */
+		.gpio = 125,
+		.active_low = 1,
+	},{
+		.name = "sig1_1", /* Green Led */
+		.gpio = 126,
+		.active_low = 1,
+	},{
+		.name = "sig1_2", /* Yellow Led */
+		.gpio = 127,
+		.active_low = 1,
+	},{
+		.name = "sig2_1", /* Green Led */
+		.gpio = 128,
+		.active_low = 1,
+	},{
+		.name = "sig2_2", /* Yellow Led */
+		.gpio = 129,
+		.active_low = 1,
+	},{
+		.name = "sig3_1", /* Green Led */
+		.gpio = 130,
+		.active_low = 1,
+	},{
+		.name = "sig3_2", /* Yellow Led */
+		.gpio = 131,
+		.active_low = 1,
+	},{
+		.name = "net1", /*Green Led */
+		.gpio = 109,
+		.active_low = 1,
+	},{
+		.name = "net2", /* Red Led */
+		.gpio = 110,
+		.active_low = 1,
+	},{
+		.name = "mod1", /* Green Led */
+		.gpio = 111,
+		.active_low = 1,
+	},{
+		.name = "mod2", /* Red Led */
+		.gpio = 112,
+		.active_low = 1,
 +	},
 +};
 +
 +static struct gpio_led_platform_data laguna_gpio_leds_data = {
-+	.num_leds = 2,
+	.num_leds = 22,
 +	.leds = laguna_gpio_leds,
 +};
 +
@ -446,6 +526,12 @@
 +
 +static struct pca953x_platform_data laguna_pca_data = {
 + 	.gpio_base = 100,
+	.irq_base = -1,
+};
+
+static struct pca953x_platform_data laguna_pca2_data = {
+ 	.gpio_base = 116,
+	.irq_base = -1,
 +};
 +
 +static struct i2c_board_info __initdata laguna_i2c_devices[] = {
@ -453,6 +539,9 @@
 +		I2C_BOARD_INFO("pca9555", 0x23),
 +		.platform_data = &laguna_pca_data,
 +	},{
+		I2C_BOARD_INFO("pca9555", 0x27),
+		.platform_data = &laguna_pca2_data,
+	},{
 +		I2C_BOARD_INFO("gsp", 0x29),
 +	},{
 +		I2C_BOARD_INFO ("24c08",0x50),
@ -548,7 +637,8 @@
 +		if (laguna_net_data.ports)
 +			platform_device_register(&laguna_net_device);
 +
-+		if (laguna_info.config_bitmap & (SATA0_LOAD | SATA1_LOAD))
+		if ((laguna_info.config_bitmap & SATA0_LOAD) ||
+		    (laguna_info.config_bitmap & SATA1_LOAD))
 +			cns3xxx_ahci_init();
 +
 +		if (laguna_info.config_bitmap & (PCIE0_LOAD))
@ -640,9 +730,9 @@
 +			spi_register_board_info(laguna_spi_devices, ARRAY_SIZE(laguna_spi_devices));
 +		}
 +
-+		if (laguna_info.config_bitmap & (SPI0_LOAD | SPI1_LOAD)) {
+		if ((laguna_info.config_bitmap & SPI0_LOAD) ||
+		    (laguna_info.config_bitmap & SPI1_LOAD))
 +			platform_device_register(&laguna_spi_controller);
-+		}
 +
 +		/*
 +		 * Do any model specific setup not known by the bitmap by matching
@ -650,13 +740,13 @@
 +		 */
 +
 +		if (strncmp(laguna_info.model, "GW2388", 6) == 0) {
-+			platform_device_register(&laguna_gpio_leds_device);
+			laguna_gpio_leds_data.num_leds = 2;
 +		} else if (strncmp(laguna_info.model, "GW2380", 6) == 0) {
 +			laguna_gpio_leds[0].gpio = 107;
 +			laguna_gpio_leds[1].gpio = 106;
 +			laguna_gpio_leds_data.num_leds = 2;
-+			platform_device_register(&laguna_gpio_leds_device);
 +		}
+		platform_device_register(&laguna_gpio_leds_device);
 +	} else {
 +		// Do some defaults here, not sure what yet
 +	}
--- a/target/linux/cns3xxx/patches/106-cns3xxx_sata_support.patch
+++ b/target/linux/cns3xxx/patches/106-cns3xxx_sata_support.patch
@ -0,0 +1,190 @@
+--- a/arch/arm/mach-cns3xxx/devices.c
+++ b/arch/arm/mach-cns3xxx/devices.c
+@@ -41,7 +41,7 @@ static struct resource cns3xxx_ahci_reso
+ static u64 cns3xxx_ahci_dmamask = DMA_BIT_MASK(32);
+ 
+ static struct platform_device cns3xxx_ahci_pdev = {
+-	.name		= "ahci",
+	.name		= "ahci-cns3xxx",
+ 	.id		= 0,
+ 	.resource	= cns3xxx_ahci_resource,
+ 	.num_resources	= ARRAY_SIZE(cns3xxx_ahci_resource),
+--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
+@@ -83,6 +83,17 @@ config SATA_AHCI_PLATFORM
+ 
+ 	  If unsure, say N.
+ 
+config SATA_AHCI_CNS3XXX
+	bool "AHCI Support on the Cavium Networks CNS3xxx SOC"
+	depends on ARCH_CNS3XXX
+	depends on SATA_AHCI_PLATFORM
+	help
+	  This option enables AHCI platform driver to support CNS3xxx
+	  System-on-Chip devices. This is only needed when using CNS3xxx AHCI
+	  controller.
+
+	  If unsure, say N.
+
+ config SATA_FSL
+ 	tristate "Freescale 3.0Gbps SATA support"
+ 	depends on FSL_SOC
+--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
+@@ -4,7 +4,10 @@ obj-$(CONFIG_ATA)		+= libata.o
+ # non-SFF interface
+ obj-$(CONFIG_SATA_AHCI)		+= ahci.o libahci.o
+ obj-$(CONFIG_SATA_ACARD_AHCI)	+= acard-ahci.o libahci.o
+-obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platform.o libahci.o
+obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platforms.o libahci.o
+ahci_platforms-y		+= ahci_platform.o
+ahci_platforms-$(CONFIG_SATA_AHCI_CNS3XXX) += ahci_cns3xxx.o
+
+ obj-$(CONFIG_SATA_FSL)		+= sata_fsl.o
+ obj-$(CONFIG_SATA_INIC162X)	+= sata_inic162x.o
+ obj-$(CONFIG_SATA_SIL24)	+= sata_sil24.o
+--- /dev/null
+++ b/drivers/ata/ahci_cns3xxx.c
+@@ -0,0 +1,52 @@
+/*
+ * AHCI support for CNS3xxx SoC
+ *
+ * Copyright 2010 MontaVista Software, LLC.
+ * Copyright 2010 Cavium Networks
+ *
+ * Authors: Anton Vorontsov <avorontsov@xxxxxxxxxx>
+ *	    Mac Lin <mkl0301@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/libata.h>
+#include <linux/ahci_platform.h>
+#include "ahci.h"
+
+/*
+ * TODO: move cns3xxx_ahci_init to here after cns3xxx_pwr*() calls are
+ * thread-safe
+ */
+
+static int cns3xxx_ahci_softreset(struct ata_link *link, unsigned int *class,
+			  unsigned long deadline)
+{
+	int pmp = sata_srst_pmp(link);
+	int ret;
+
+	ret = ahci_do_softreset(link, class, pmp, deadline, ahci_check_ready);
+	if (pmp && ret)
+		return ahci_do_softreset(link, class, 0, deadline,
+			ahci_check_ready);
+	return ret;
+}
+
+static struct ata_port_operations cns3xxx_ahci_ops = {
+	.inherits		= &ahci_ops,
+	.softreset		= cns3xxx_ahci_softreset,
+};
+
+static const struct ata_port_info cns3xxx_ata_port_info = {
+	.flags		= AHCI_FLAG_COMMON,
+	.pio_mask	= ATA_PIO4,
+	.udma_mask	= ATA_UDMA6,
+	.port_ops	= &cns3xxx_ahci_ops,
+};
+
+struct ahci_platform_data cns3xxx_ahci_platform_data = {
+	.ata_port_info	= &cns3xxx_ata_port_info,
+};
+
+--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
+@@ -19,9 +19,11 @@
+ #include <linux/interrupt.h>
+ #include <linux/device.h>
+ #include <linux/platform_device.h>
+#include <linux/mod_devicetable.h>
+ #include <linux/libata.h>
+ #include <linux/ahci_platform.h>
+ #include "ahci.h"
+#include "ahci_platform.h"
+ 
+ static struct scsi_host_template ahci_platform_sht = {
+ 	AHCI_SHT("ahci_platform"),
+@@ -29,6 +31,7 @@ static struct scsi_host_template ahci_pl
+ 
+ static int __init ahci_probe(struct platform_device *pdev)
+ {
+	const struct platform_device_id *platid = platform_get_device_id(pdev);
+ 	struct device *dev = &pdev->dev;
+ 	struct ahci_platform_data *pdata = dev->platform_data;
+ 	struct ata_port_info pi = {
+@@ -46,6 +49,9 @@ static int __init ahci_probe(struct plat
+ 	int i;
+ 	int rc;
+ 
+	if (!pdata && platid && platid->driver_data)
+		pdata = (void *)platid->driver_data;
+
+ 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	if (!mem) {
+ 		dev_err(dev, "no mmio space\n");
+@@ -171,17 +177,28 @@ static int __devexit ahci_remove(struct
+ 	return 0;
+ }
+ 
+static const struct platform_device_id ahci_platform_ids[] = {
+	{ "ahci", },
+#ifdef CONFIG_SATA_AHCI_CNS3XXX
+	{ "ahci-cns3xxx", (kernel_ulong_t)&cns3xxx_ahci_platform_data},
+#endif
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, ahci_platform_ids);
+
+ static struct platform_driver ahci_driver = {
+-	.remove = __devexit_p(ahci_remove),
+ 	.driver = {
+ 		.name = "ahci",
+ 		.owner = THIS_MODULE,
+ 	},
+	.probe	= ahci_probe,
+	.remove = __devexit_p(ahci_remove),
+	.id_table = ahci_platform_ids,
+ };
+ 
+ static int __init ahci_init(void)
+ {
+-	return platform_driver_probe(&ahci_driver, ahci_probe);
+	return platform_driver_register(&ahci_driver);
+ }
+ module_init(ahci_init);
+ 
+@@ -194,4 +211,3 @@ module_exit(ahci_exit);
+ MODULE_DESCRIPTION("AHCI SATA platform driver");
+ MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
+ MODULE_LICENSE("GPL");
+-MODULE_ALIAS("platform:ahci");
+--- /dev/null
+++ b/drivers/ata/ahci_platform.h
+@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010 MontaVista Software, LLC.
+ * Copyright 2010 Cavium Networks
+ *
+ * Authors: Anton Vorontsov <avorontsov@xxxxxxxxxx>
+ *	    Mac Lin <mkl0301@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _DRIVERS_SATA_AHCI_PLATFORMS_H
+#define _DRIVERS_SATA_AHCI_PLATFORMS_H
+
+extern struct ahci_platform_data cns3xxx_ahci_platform_data;
+
+#endif /*_DRIVERS_SATA_AHCI_PLATFORMS_H*/
+