drivers: add the support for Silicon Image SATA controller

Add the Silicon Image series PCI Express to
Serial ATA controller support, including Sil3132,
Sil3131 and Sil3124.
The SATA controller can be used to load kernel.

The features list:
	- Supports 1-lane 2.5 Gbit/s PCI Express
	- Supports one/two/four independent Serial ATA channels
	- Supports Serial ATA Generation 2 transfer rate of 3.0 Gbit/s
	- Supports LBA28 and LBA48

Signed-off-by: Tang Yuantian <b29983@freescale.com>
Signed-off-by: Aaron Williams <Aaron.Williams@cavium.com>
Tested-by: Lan Chunhe <b25806@freescale.com>

3 files changed, 952 insertions, 0 deletions

diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 2efe981..98560ef 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -36,6 +36,7 @@ COBJS-$(CONFIG_MX51_PATA) += mxc_ata.o
 COBJS-$(CONFIG_PATA_BFIN) += pata_bfin.o
 COBJS-$(CONFIG_SATA_DWC) += sata_dwc.o
 COBJS-$(CONFIG_SATA_SIL3114) += sata_sil3114.o
+COBJS-$(CONFIG_SATA_SIL) += sata_sil.o
 COBJS-$(CONFIG_IDE_SIL680) += sil680.o
 COBJS-$(CONFIG_SCSI_SYM53C8XX) += sym53c8xx.o
 COBJS-$(CONFIG_SYSTEMACE) += systemace.o
diff --git a/drivers/block/sata_sil.c b/drivers/block/sata_sil.c
new file mode 100644
index 0000000..5e7ef5e
--- /dev/null
+++ b/drivers/block/sata_sil.c
@@ -0,0 +1,722 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc.
+ * Author: Tang Yuantian <b29983@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <command.h>
+#include <asm/byteorder.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <fis.h>
+#include <libata.h>
+#include "sata_sil.h"
+
+/* Convert sectorsize to wordsize */
+#define ATA_SECTOR_WORDS (ATA_SECT_SIZE/2)
+#define mdelay(n)   udelay((n)*1000)
+#define virt_to_bus(devno, v)	pci_virt_to_mem(devno, (void *) (v))
+
+static struct sata_info sata_info;
+
+static struct pci_device_id supported[] = {
+	{PCI_VENDOR_ID_SILICONIMAGE, PCI_DEVICE_ID_SIL3131},
+	{PCI_VENDOR_ID_SILICONIMAGE, PCI_DEVICE_ID_SIL3132},
+	{PCI_VENDOR_ID_SILICONIMAGE, PCI_DEVICE_ID_SIL3124},
+	{}
+};
+
+static void sil_sata_dump_fis(struct sata_fis_d2h *s)
+{
+	printf("Status FIS dump:\n");
+	printf("fis_type:		%02x\n", s->fis_type);
+	printf("pm_port_i:		%02x\n", s->pm_port_i);
+	printf("status:			%02x\n", s->status);
+	printf("error:			%02x\n", s->error);
+	printf("lba_low:		%02x\n", s->lba_low);
+	printf("lba_mid:		%02x\n", s->lba_mid);
+	printf("lba_high:		%02x\n", s->lba_high);
+	printf("device:			%02x\n", s->device);
+	printf("lba_low_exp:		%02x\n", s->lba_low_exp);
+	printf("lba_mid_exp:		%02x\n", s->lba_mid_exp);
+	printf("lba_high_exp:		%02x\n", s->lba_high_exp);
+	printf("res1:			%02x\n", s->res1);
+	printf("sector_count:		%02x\n", s->sector_count);
+	printf("sector_count_exp:	%02x\n", s->sector_count_exp);
+}
+
+static const char *sata_spd_string(unsigned int speed)
+{
+	static const char * const spd_str[] = {
+		"1.5 Gbps",
+		"3.0 Gbps",
+		"6.0 Gbps",
+	};
+
+	if ((speed - 1) > 2)
+		return "<unknown>";
+
+	return spd_str[speed - 1];
+}
+
+static u32 ata_wait_register(void *reg, u32 mask,
+			 u32 val, int timeout_msec)
+{
+	u32 tmp;
+
+	tmp = readl(reg);
+	while ((tmp & mask) == val && timeout_msec > 0) {
+		mdelay(1);
+		timeout_msec--;
+		tmp = readl(reg);
+	}
+
+	return tmp;
+}
+
+static void sil_config_port(void *port)
+{
+	/* configure IRQ WoC */
+	writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_CLR);
+
+	/* zero error counters. */
+	writew(0x8000, port + PORT_DECODE_ERR_THRESH);
+	writew(0x8000, port + PORT_CRC_ERR_THRESH);
+	writew(0x8000, port + PORT_HSHK_ERR_THRESH);
+	writew(0x0000, port + PORT_DECODE_ERR_CNT);
+	writew(0x0000, port + PORT_CRC_ERR_CNT);
+	writew(0x0000, port + PORT_HSHK_ERR_CNT);
+
+	/* always use 64bit activation */
+	writel(PORT_CS_32BIT_ACTV, port + PORT_CTRL_CLR);
+
+	/* clear port multiplier enable and resume bits */
+	writel(PORT_CS_PMP_EN | PORT_CS_PMP_RESUME, port + PORT_CTRL_CLR);
+}
+
+static int sil_init_port(void *port)
+{
+	u32 tmp;
+
+	writel(PORT_CS_INIT, port + PORT_CTRL_STAT);
+	ata_wait_register(port + PORT_CTRL_STAT,
+			  PORT_CS_INIT, PORT_CS_INIT, 100);
+	tmp = ata_wait_register(port + PORT_CTRL_STAT,
+				PORT_CS_RDY, 0, 100);
+
+	if ((tmp & (PORT_CS_INIT | PORT_CS_RDY)) != PORT_CS_RDY)
+		return 1;
+
+	return 0;
+}
+
+static void sil_read_fis(int dev, int tag, struct sata_fis_d2h *fis)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	void *port = sata->port;
+	struct sil_prb *prb;
+	int i;
+	u32 *src, *dst;
+
+	prb = port + PORT_LRAM + tag * PORT_LRAM_SLOT_SZ;
+	src = (u32 *)&prb->fis;
+	dst = (u32 *)fis;
+	for (i = 0; i < sizeof(struct sata_fis_h2d); i += 4)
+		*dst++ = readl(src++);
+}
+
+static int sil_exec_cmd(int dev, struct sil_cmd_block *pcmd, int tag)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	void *port = sata->port;
+	u64 paddr = virt_to_bus(sata->devno, pcmd);
+	u32 irq_mask, irq_stat;
+	int rc;
+
+	writel(PORT_IRQ_COMPLETE | PORT_IRQ_ERROR, port + PORT_IRQ_ENABLE_CLR);
+
+	/* better to add momery barrior here */
+	writel((u32)paddr, port + PORT_CMD_ACTIVATE + tag * 8);
+	writel((u64)paddr >> 32, port + PORT_CMD_ACTIVATE + tag * 8 + 4);
+
+	irq_mask = (PORT_IRQ_COMPLETE | PORT_IRQ_ERROR) << PORT_IRQ_RAW_SHIFT;
+	irq_stat = ata_wait_register(port + PORT_IRQ_STAT, irq_mask,
+			0, 10000);
+
+	/* clear IRQs */
+	writel(irq_mask, port + PORT_IRQ_STAT);
+	irq_stat >>= PORT_IRQ_RAW_SHIFT;
+
+	if (irq_stat & PORT_IRQ_COMPLETE)
+		rc = 0;
+	else {
+		/* force port into known state */
+		sil_init_port(port);
+		if (irq_stat & PORT_IRQ_ERROR)
+			rc = 1; /* error */
+		else
+			rc = 2; /* busy */
+	}
+
+	return rc;
+}
+
+static int sil_cmd_set_feature(int dev)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	struct sil_cmd_block cmdb, *pcmd = &cmdb;
+	struct sata_fis_d2h fis;
+	u8 udma_cap;
+	int ret;
+
+	memset((void *)&cmdb, 0, sizeof(struct sil_cmd_block));
+	pcmd->prb.fis.fis_type = SATA_FIS_TYPE_REGISTER_H2D;
+	pcmd->prb.fis.pm_port_c = (1 << 7);
+	pcmd->prb.fis.command = ATA_CMD_SET_FEATURES;
+	pcmd->prb.fis.features = SETFEATURES_XFER;
+
+	/* First check the device capablity */
+	udma_cap = (u8)(sata->udma & 0xff);
+	debug("udma_cap %02x\n", udma_cap);
+
+	if (udma_cap == ATA_UDMA6)
+		pcmd->prb.fis.sector_count = XFER_UDMA_6;
+	if (udma_cap == ATA_UDMA5)
+		pcmd->prb.fis.sector_count = XFER_UDMA_5;
+	if (udma_cap == ATA_UDMA4)
+		pcmd->prb.fis.sector_count = XFER_UDMA_4;
+	if (udma_cap == ATA_UDMA3)
+		pcmd->prb.fis.sector_count = XFER_UDMA_3;
+
+	ret = sil_exec_cmd(dev, pcmd, 0);
+	if (ret) {
+		sil_read_fis(dev, 0, &fis);
+		printf("Err: exe cmd(0x%x).\n",
+				readl(sata->port + PORT_SERROR));
+		sil_sata_dump_fis(&fis);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int sil_cmd_identify_device(int dev, u16 *id)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	struct sil_cmd_block cmdb, *pcmd = &cmdb;
+	struct sata_fis_d2h fis;
+	int ret;
+
+	memset((void *)&cmdb, 0, sizeof(struct sil_cmd_block));
+	pcmd->prb.ctrl = cpu_to_le16(PRB_CTRL_PROTOCOL);
+	pcmd->prb.prot = cpu_to_le16(PRB_PROT_READ);
+	pcmd->prb.fis.fis_type = SATA_FIS_TYPE_REGISTER_H2D;
+	pcmd->prb.fis.pm_port_c = (1 << 7);
+	pcmd->prb.fis.command = ATA_CMD_ID_ATA;
+	pcmd->sge.addr = cpu_to_le64(virt_to_bus(sata->devno, id));
+	pcmd->sge.cnt = cpu_to_le32(sizeof(id[0]) * ATA_ID_WORDS);
+	pcmd->sge.flags = cpu_to_le32(SGE_TRM);
+
+	ret = sil_exec_cmd(dev, pcmd, 0);
+	if (ret) {
+		sil_read_fis(dev, 0, &fis);
+		printf("Err: id cmd(0x%x).\n", readl(sata->port + PORT_SERROR));
+		sil_sata_dump_fis(&fis);
+		return 1;
+	}
+	ata_swap_buf_le16(id, ATA_ID_WORDS);
+
+	return 0;
+}
+
+static int sil_cmd_soft_reset(int dev)
+{
+	struct sil_cmd_block cmdb, *pcmd = &cmdb;
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	struct sata_fis_d2h fis;
+	void *port = sata->port;
+	int ret;
+
+	/* put the port into known state */
+	if (sil_init_port(port)) {
+		printf("SRST: port %d not ready\n", dev);
+		return 1;
+	}
+
+	memset((void *)&cmdb, 0, sizeof(struct sil_cmd_block));
+
+	pcmd->prb.ctrl = cpu_to_le16(PRB_CTRL_SRST);
+	pcmd->prb.fis.fis_type = SATA_FIS_TYPE_REGISTER_H2D;
+	pcmd->prb.fis.pm_port_c = 0xf;
+
+	ret = sil_exec_cmd(dev, &cmdb, 0);
+	if (ret) {
+		sil_read_fis(dev, 0, &fis);
+		printf("SRST cmd error.\n");
+		sil_sata_dump_fis(&fis);
+		return 1;
+	}
+
+	return 0;
+}
+
+static ulong sil_sata_rw_cmd(int dev, ulong start, ulong blkcnt,
+		u8 *buffer, int is_write)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	struct sil_cmd_block cmdb, *pcmd = &cmdb;
+	struct sata_fis_d2h fis;
+	u64 block;
+	int ret;
+
+	block = (u64)start;
+	memset(pcmd, 0, sizeof(struct sil_cmd_block));
+	pcmd->prb.ctrl = cpu_to_le16(PRB_CTRL_PROTOCOL);
+	pcmd->prb.fis.fis_type = SATA_FIS_TYPE_REGISTER_H2D;
+	pcmd->prb.fis.pm_port_c = (1 << 7);
+	if (is_write) {
+		pcmd->prb.fis.command = ATA_CMD_WRITE;
+		pcmd->prb.prot = cpu_to_le16(PRB_PROT_WRITE);
+	} else {
+		pcmd->prb.fis.command = ATA_CMD_READ;
+		pcmd->prb.prot = cpu_to_le16(PRB_PROT_READ);
+	}
+
+	pcmd->prb.fis.device = ATA_LBA;
+	pcmd->prb.fis.device |= (block >> 24) & 0xf;
+	pcmd->prb.fis.lba_high = (block >> 16) & 0xff;
+	pcmd->prb.fis.lba_mid = (block >> 8) & 0xff;
+	pcmd->prb.fis.lba_low = block & 0xff;
+	pcmd->prb.fis.sector_count = (u8)blkcnt & 0xff;
+
+	pcmd->sge.addr = cpu_to_le64(virt_to_bus(sata->devno, buffer));
+	pcmd->sge.cnt = cpu_to_le32(blkcnt * ATA_SECT_SIZE);
+	pcmd->sge.flags = cpu_to_le32(SGE_TRM);
+
+	ret = sil_exec_cmd(dev, pcmd, 0);
+	if (ret) {
+		sil_read_fis(dev, 0, &fis);
+		printf("Err: rw cmd(0x%08x).\n",
+				readl(sata->port + PORT_SERROR));
+		sil_sata_dump_fis(&fis);
+		return 1;
+	}
+
+	return blkcnt;
+}
+
+static ulong sil_sata_rw_cmd_ext(int dev, ulong start, ulong blkcnt,
+		u8 *buffer, int is_write)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	struct sil_cmd_block cmdb, *pcmd = &cmdb;
+	struct sata_fis_d2h fis;
+	u64 block;
+	int ret;
+
+	block = (u64)start;
+	memset(pcmd, 0, sizeof(struct sil_cmd_block));
+	pcmd->prb.ctrl = cpu_to_le16(PRB_CTRL_PROTOCOL);
+	pcmd->prb.fis.fis_type = SATA_FIS_TYPE_REGISTER_H2D;
+	pcmd->prb.fis.pm_port_c = (1 << 7);
+	if (is_write) {
+		pcmd->prb.fis.command = ATA_CMD_WRITE_EXT;
+		pcmd->prb.prot = cpu_to_le16(PRB_PROT_WRITE);
+	} else {
+		pcmd->prb.fis.command = ATA_CMD_READ_EXT;
+		pcmd->prb.prot = cpu_to_le16(PRB_PROT_READ);
+	}
+
+	pcmd->prb.fis.lba_high_exp = (block >> 40) & 0xff;
+	pcmd->prb.fis.lba_mid_exp = (block >> 32) & 0xff;
+	pcmd->prb.fis.lba_low_exp = (block >> 24) & 0xff;
+	pcmd->prb.fis.lba_high = (block >> 16) & 0xff;
+	pcmd->prb.fis.lba_mid = (block >> 8) & 0xff;
+	pcmd->prb.fis.lba_low = block & 0xff;
+	pcmd->prb.fis.device = ATA_LBA;
+	pcmd->prb.fis.sector_count_exp = (blkcnt >> 8) & 0xff;
+	pcmd->prb.fis.sector_count = blkcnt & 0xff;
+
+	pcmd->sge.addr = cpu_to_le64(virt_to_bus(sata->devno, buffer));
+	pcmd->sge.cnt = cpu_to_le32(blkcnt * ATA_SECT_SIZE);
+	pcmd->sge.flags = cpu_to_le32(SGE_TRM);
+
+	ret = sil_exec_cmd(dev, pcmd, 0);
+	if (ret) {
+		sil_read_fis(dev, 0, &fis);
+		printf("Err: rw ext cmd(0x%08x).\n",
+				readl(sata->port + PORT_SERROR));
+		sil_sata_dump_fis(&fis);
+		return 1;
+	}
+
+	return blkcnt;
+}
+
+ulong sil_sata_rw_lba28(int dev, ulong blknr, lbaint_t blkcnt,
+		void *buffer, int is_write)
+{
+	ulong start, blks, max_blks;
+	u8 *addr;
+
+	start = blknr;
+	blks = blkcnt;
+	addr = (u8 *)buffer;
+
+	max_blks = ATA_MAX_SECTORS;
+	do {
+		if (blks > max_blks) {
+			sil_sata_rw_cmd(dev, start, max_blks, addr, is_write);
+			start += max_blks;
+			blks -= max_blks;
+			addr += ATA_SECT_SIZE * max_blks;
+		} else {
+			sil_sata_rw_cmd(dev, start, blks, addr, is_write);
+			start += blks;
+			blks = 0;
+			addr += ATA_SECT_SIZE * blks;
+		}
+	} while (blks != 0);
+
+	return blkcnt;
+}
+
+ulong sil_sata_rw_lba48(int dev, ulong blknr, lbaint_t blkcnt,
+		void *buffer, int is_write)
+{
+	ulong start, blks, max_blks;
+	u8 *addr;
+
+	start = blknr;
+	blks = blkcnt;
+	addr = (u8 *)buffer;
+
+	max_blks = ATA_MAX_SECTORS_LBA48;
+	do {
+		if (blks > max_blks) {
+			sil_sata_rw_cmd_ext(dev, start, max_blks,
+					addr, is_write);
+			start += max_blks;
+			blks -= max_blks;
+			addr += ATA_SECT_SIZE * max_blks;
+		} else {
+			sil_sata_rw_cmd_ext(dev, start, blks,
+					addr, is_write);
+			start += blks;
+			blks = 0;
+			addr += ATA_SECT_SIZE * blks;
+		}
+	} while (blks != 0);
+
+	return blkcnt;
+}
+
+void sil_sata_cmd_flush_cache(int dev)
+{
+	struct sil_cmd_block cmdb, *pcmd = &cmdb;
+
+	memset((void *)pcmd, 0, sizeof(struct sil_cmd_block));
+	pcmd->prb.fis.fis_type = SATA_FIS_TYPE_REGISTER_H2D;
+	pcmd->prb.fis.pm_port_c = (1 << 7);
+	pcmd->prb.fis.command = ATA_CMD_FLUSH;
+
+	sil_exec_cmd(dev, pcmd, 0);
+}
+
+void sil_sata_cmd_flush_cache_ext(int dev)
+{
+	struct sil_cmd_block cmdb, *pcmd = &cmdb;
+
+	memset((void *)pcmd, 0, sizeof(struct sil_cmd_block));
+	pcmd->prb.fis.fis_type = SATA_FIS_TYPE_REGISTER_H2D;
+	pcmd->prb.fis.pm_port_c = (1 << 7);
+	pcmd->prb.fis.command = ATA_CMD_FLUSH_EXT;
+
+	sil_exec_cmd(dev, pcmd, 0);
+}
+
+static void sil_sata_init_wcache(int dev, u16 *id)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+
+	if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
+		sata->wcache = 1;
+	if (ata_id_has_flush(id))
+		sata->flush = 1;
+	if (ata_id_has_flush_ext(id))
+		sata->flush_ext = 1;
+}
+
+static int sil_sata_get_wcache(int dev)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+
+	return sata->wcache;
+}
+
+static int sil_sata_get_flush(int dev)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+
+	return sata->flush;
+}
+
+static int sil_sata_get_flush_ext(int dev)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+
+	return sata->flush_ext;
+}
+
+/*
+ * SATA interface between low level driver and command layer
+ */
+ulong sata_read(int dev, ulong blknr, lbaint_t blkcnt, void *buffer)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	ulong rc;
+
+	if (sata->lba48)
+		rc = sil_sata_rw_lba48(dev, blknr, blkcnt, buffer, READ_CMD);
+	else
+		rc = sil_sata_rw_lba28(dev, blknr, blkcnt, buffer, READ_CMD);
+
+	return rc;
+}
+
+/*
+ * SATA interface between low level driver and command layer
+ */
+ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, void *buffer)
+{
+	struct sil_sata *sata = sata_dev_desc[dev].priv;
+	ulong rc;
+
+	if (sata->lba48) {
+		rc = sil_sata_rw_lba48(dev, blknr, blkcnt, buffer, WRITE_CMD);
+		if (sil_sata_get_wcache(dev) && sil_sata_get_flush_ext(dev))
+			sil_sata_cmd_flush_cache_ext(dev);
+	} else {
+		rc = sil_sata_rw_lba28(dev, blknr, blkcnt, buffer, WRITE_CMD);
+		if (sil_sata_get_wcache(dev) && sil_sata_get_flush(dev))
+			sil_sata_cmd_flush_cache(dev);
+	}
+
+	return rc;
+}
+
+/*
+ * SATA interface between low level driver and command layer
+ */
+int init_sata(int dev)
+{
+	static int init_done, idx;
+	pci_dev_t devno;
+	u16 word;
+
+	if (init_done == 1 && dev < sata_info.maxport)
+		return 1;
+
+	init_done = 1;
+
+	/* Find PCI device(s) */
+	devno = pci_find_devices(supported, idx++);
+	if (devno == -1)
+		return 1;
+
+	pci_read_config_word(devno, PCI_DEVICE_ID, &word);
+
+	/* get the port count */
+	word &= 0xf;
+
+	sata_info.portbase = sata_info.maxport;
+	sata_info.maxport = sata_info.portbase + word;
+	sata_info.devno = devno;
+
+	/* Read out all BARs */
+	sata_info.iobase[0] = (ulong)pci_map_bar(devno,
+			PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
+	sata_info.iobase[1] = (ulong)pci_map_bar(devno,
+			PCI_BASE_ADDRESS_2, PCI_REGION_MEM);
+	sata_info.iobase[2] = (ulong)pci_map_bar(devno,
+			PCI_BASE_ADDRESS_4, PCI_REGION_MEM);
+
+	/* mask out the unused bits */
+	sata_info.iobase[0] &= 0xffffff80;
+	sata_info.iobase[1] &= 0xfffffc00;
+	sata_info.iobase[2] &= 0xffffff80;
+
+	/* Enable Bus Mastering and memory region */
+	pci_write_config_word(devno, PCI_COMMAND,
+			PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+
+	/* Check if mem accesses and Bus Mastering are enabled. */
+	pci_read_config_word(devno, PCI_COMMAND, &word);
+	if (!(word & PCI_COMMAND_MEMORY) ||
+			(!(word & PCI_COMMAND_MASTER))) {
+		printf("Error: Can not enable MEM access or Bus Mastering.\n");
+		debug("PCI command: %04x\n", word);
+		return 1;
+	}
+
+	/* GPIO off */
+	writel(0, (void *)(sata_info.iobase[0] + HOST_FLASH_CMD));
+	/* clear global reset & mask interrupts during initialization */
+	writel(0, (void *)(sata_info.iobase[0] + HOST_CTRL));
+
+	return 0;
+}
+
+/*
+ * SATA interface between low level driver and command layer
+ */
+int scan_sata(int dev)
+{
+	unsigned char serial[ATA_ID_SERNO_LEN + 1];
+	unsigned char firmware[ATA_ID_FW_REV_LEN + 1];
+	unsigned char product[ATA_ID_PROD_LEN + 1];
+	struct sil_sata *sata;
+	void *port;
+	int cnt;
+	u16 *id;
+	u32 tmp;
+
+	if (dev >= sata_info.maxport) {
+		printf("SATA#%d is not present\n", dev);
+		return 1;
+	}
+
+	printf("SATA#%d\n", dev);
+	port = (void *)sata_info.iobase[1] +
+		PORT_REGS_SIZE * (dev - sata_info.portbase);
+
+	/* Initial PHY setting */
+	writel(0x20c, port + PORT_PHY_CFG);
+
+	/* clear port RST */
+	tmp = readl(port + PORT_CTRL_STAT);
+	if (tmp & PORT_CS_PORT_RST) {
+		writel(PORT_CS_PORT_RST, port + PORT_CTRL_CLR);
+		tmp = ata_wait_register(port + PORT_CTRL_STAT,
+				PORT_CS_PORT_RST, PORT_CS_PORT_RST, 100);
+		if (tmp & PORT_CS_PORT_RST)
+			printf("Err: Failed to clear port RST\n");
+	}
+
+	/* Check if device is present */
+	for (cnt = 0; cnt < 100; cnt++) {
+		tmp = readl(port + PORT_SSTATUS);
+		if ((tmp & 0xF) == 0x3)
+			break;
+		mdelay(1);
+	}
+
+	tmp = readl(port + PORT_SSTATUS);
+	if ((tmp & 0xf) != 0x3) {
+		printf("	(No RDY)\n");
+		return 1;
+	}
+
+	/* Wait for port ready */
+	tmp = ata_wait_register(port + PORT_CTRL_STAT,
+				PORT_CS_RDY, PORT_CS_RDY, 100);
+	if ((tmp & PORT_CS_RDY) != PORT_CS_RDY) {
+		printf("%d port not ready.\n", dev);
+		return 1;
+	}
+
+	/* configure port */
+	sil_config_port(port);
+
+	/* Reset port */
+	writel(PORT_CS_DEV_RST, port + PORT_CTRL_STAT);
+	readl(port + PORT_CTRL_STAT);
+	tmp = ata_wait_register(port + PORT_CTRL_STAT, PORT_CS_DEV_RST,
+				PORT_CS_DEV_RST, 100);
+	if (tmp & PORT_CS_DEV_RST) {
+		printf("%d port reset failed.\n", dev);
+		return 1;
+	}
+
+	sata = (struct sil_sata *)malloc(sizeof(struct sil_sata));
+	if (!sata) {
+		printf("%d no memory.\n", dev);
+		return 1;
+	}
+	memset((void *)sata, 0, sizeof(struct sil_sata));
+
+	/* turn on port interrupt */
+	tmp = readl((void *)(sata_info.iobase[0] + HOST_CTRL));
+	tmp |= (1 << (dev - sata_info.portbase));
+	writel(tmp, (void *)(sata_info.iobase[0] + HOST_CTRL));
+
+	/* Save the private struct to block device struct */
+	sata_dev_desc[dev].priv = (void *)sata;
+	sata->port = port;
+	sata->devno = sata_info.devno;
+	sprintf(sata->name, "SATA#%d", dev);
+	sil_cmd_soft_reset(dev);
+	tmp = readl(port + PORT_SSTATUS);
+	tmp = (tmp >> 4) & 0xf;
+	printf("	(%s)\n", sata_spd_string(tmp));
+
+	id = (u16 *)malloc(ATA_ID_WORDS * 2);
+	if (!id) {
+		printf("Id malloc failed\n");
+		free((void *)sata);
+		return 1;
+	}
+	sil_cmd_identify_device(dev, id);
+
+#ifdef CONFIG_LBA48
+	/* Check if support LBA48 */
+	if (ata_id_has_lba48(id)) {
+		sata_dev_desc[dev].lba48 = 1;
+		sata->lba48 = 1;
+		debug("Device supports LBA48\n");
+	} else
+		debug("Device supports LBA28\n");
+#endif
+
+	/* Serial number */
+	ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
+	memcpy(sata_dev_desc[dev].product, serial, sizeof(serial));
+
+	/* Firmware version */
+	ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
+	memcpy(sata_dev_desc[dev].revision, firmware, sizeof(firmware));
+
+	/* Product model */
+	ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
+	memcpy(sata_dev_desc[dev].vendor, product, sizeof(product));
+
+	/* Totoal sectors */
+	sata_dev_desc[dev].lba = ata_id_n_sectors(id);
+
+	sil_sata_init_wcache(dev, id);
+	sil_cmd_set_feature(dev);
+
+#ifdef DEBUG
+	sil_cmd_identify_device(dev, id);
+	ata_dump_id(id);
+#endif
+	free((void *)id);
+
+	return 0;
+}
diff --git a/drivers/block/sata_sil.h b/drivers/block/sata_sil.h
new file mode 100644
index 0000000..2dfd4a5
--- /dev/null
+++ b/drivers/block/sata_sil.h
@@ -0,0 +1,229 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc.
+ * Author: Tang Yuantian <b29983@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef SATA_SIL3132_H
+#define SATA_SIL3132_H
+
+#define READ_CMD	0
+#define WRITE_CMD	1
+
+extern block_dev_desc_t sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
+
+/*
+ * SATA device driver struct for each dev
+ */
+struct sil_sata {
+	char	name[12];
+	void	*port;	/* the port base address */
+	int		lba48;
+	u16		pio;
+	u16		mwdma;
+	u16		udma;
+	pci_dev_t devno;
+	int		wcache;
+	int		flush;
+	int		flush_ext;
+};
+
+/* sata info for each controller */
+struct sata_info {
+	ulong iobase[3];
+	pci_dev_t devno;
+	int portbase;
+	int maxport;
+};
+
+/*
+ * Scatter gather entry (SGE),MUST 8 bytes aligned
+ */
+struct sil_sge {
+	__le64 addr;
+	__le32 cnt;
+	__le32 flags;
+} __attribute__ ((aligned(8), packed));
+
+/*
+ * Port request block, MUST 8 bytes aligned
+ */
+struct sil_prb {
+	__le16 ctrl;
+	__le16 prot;
+	__le32 rx_cnt;
+	struct sata_fis_h2d fis;
+} __attribute__ ((aligned(8), packed));
+
+struct sil_cmd_block {
+	struct sil_prb prb;
+	struct sil_sge sge;
+};
+
+enum {
+	HOST_SLOT_STAT		= 0x00, /* 32 bit slot stat * 4 */
+	HOST_CTRL		= 0x40,
+	HOST_IRQ_STAT		= 0x44,
+	HOST_PHY_CFG		= 0x48,
+	HOST_BIST_CTRL		= 0x50,
+	HOST_BIST_PTRN		= 0x54,
+	HOST_BIST_STAT		= 0x58,
+	HOST_MEM_BIST_STAT	= 0x5c,
+	HOST_FLASH_CMD		= 0x70,
+		/* 8 bit regs */
+	HOST_FLASH_DATA		= 0x74,
+	HOST_TRANSITION_DETECT	= 0x75,
+	HOST_GPIO_CTRL		= 0x76,
+	HOST_I2C_ADDR		= 0x78, /* 32 bit */
+	HOST_I2C_DATA		= 0x7c,
+	HOST_I2C_XFER_CNT	= 0x7e,
+	HOST_I2C_CTRL		= 0x7f,
+
+	/* HOST_SLOT_STAT bits */
+	HOST_SSTAT_ATTN		= (1 << 31),
+
+	/* HOST_CTRL bits */
+	HOST_CTRL_M66EN		= (1 << 16), /* M66EN PCI bus signal */
+	HOST_CTRL_TRDY		= (1 << 17), /* latched PCI TRDY */
+	HOST_CTRL_STOP		= (1 << 18), /* latched PCI STOP */
+	HOST_CTRL_DEVSEL	= (1 << 19), /* latched PCI DEVSEL */
+	HOST_CTRL_REQ64		= (1 << 20), /* latched PCI REQ64 */
+	HOST_CTRL_GLOBAL_RST	= (1 << 31), /* global reset */
+
+	/*
+	 * Port registers
+	 * (8192 bytes @ +0x0000, +0x2000, +0x4000 and +0x6000 @ BAR2)
+	 */
+	PORT_REGS_SIZE		= 0x2000,
+
+	PORT_LRAM		= 0x0000, /* 31 LRAM slots and PMP regs */
+	PORT_LRAM_SLOT_SZ	= 0x0080, /* 32 bytes PRB + 2 SGE, ACT... */
+
+	PORT_PMP		= 0x0f80, /* 8 bytes PMP * 16 (128 bytes) */
+	PORT_PMP_STATUS		= 0x0000, /* port device status offset */
+	PORT_PMP_QACTIVE	= 0x0004, /* port device QActive offset */
+	PORT_PMP_SIZE		= 0x0008, /* 8 bytes per PMP */
+
+	/* 32 bit regs */
+	PORT_CTRL_STAT		= 0x1000, /* write: ctrl-set, read: stat */
+	PORT_CTRL_CLR		= 0x1004, /* write: ctrl-clear */
+	PORT_IRQ_STAT		= 0x1008, /* high: status, low: interrupt */
+	PORT_IRQ_ENABLE_SET	= 0x1010, /* write: enable-set */
+	PORT_IRQ_ENABLE_CLR	= 0x1014, /* write: enable-clear */
+	PORT_ACTIVATE_UPPER_ADDR = 0x101c,
+	PORT_EXEC_FIFO		= 0x1020, /* command execution fifo */
+	PORT_CMD_ERR		= 0x1024, /* command error number */
+	PORT_FIS_CFG		= 0x1028,
+	PORT_FIFO_THRES		= 0x102c,
+
+	/* 16 bit regs */
+	PORT_DECODE_ERR_CNT	= 0x1040,
+	PORT_DECODE_ERR_THRESH	= 0x1042,
+	PORT_CRC_ERR_CNT	= 0x1044,
+	PORT_CRC_ERR_THRESH	= 0x1046,
+	PORT_HSHK_ERR_CNT	= 0x1048,
+	PORT_HSHK_ERR_THRESH	= 0x104a,
+
+	/* 32 bit regs */
+	PORT_PHY_CFG		= 0x1050,
+	PORT_SLOT_STAT		= 0x1800,
+	PORT_CMD_ACTIVATE	= 0x1c00, /* 64 bit cmd activate * 31 */
+	PORT_CONTEXT		= 0x1e04,
+	PORT_EXEC_DIAG		= 0x1e00, /* 32bit exec diag * 16 */
+	PORT_PSD_DIAG		= 0x1e40, /* 32bit psd diag * 16 */
+	PORT_SCONTROL		= 0x1f00,
+	PORT_SSTATUS		= 0x1f04,
+	PORT_SERROR		= 0x1f08,
+	PORT_SACTIVE		= 0x1f0c,
+
+	/* PORT_CTRL_STAT bits */
+	PORT_CS_PORT_RST	= (1 << 0), /* port reset */
+	PORT_CS_DEV_RST		= (1 << 1), /* device reset */
+	PORT_CS_INIT		= (1 << 2), /* port initialize */
+	PORT_CS_IRQ_WOC		= (1 << 3), /* interrupt write one to clear */
+	PORT_CS_CDB16		= (1 << 5), /* 0=12b cdb, 1=16b cdb */
+	PORT_CS_PMP_RESUME	= (1 << 6), /* PMP resume */
+	PORT_CS_32BIT_ACTV	= (1 << 10), /* 32-bit activation */
+	PORT_CS_PMP_EN		= (1 << 13), /* port multiplier enable */
+	PORT_CS_RDY		= (1 << 31), /* port ready to accept commands */
+
+	/* PORT_IRQ_STAT/ENABLE_SET/CLR */
+	/* bits[11:0] are masked */
+	PORT_IRQ_COMPLETE	= (1 << 0), /* command(s) completed */
+	PORT_IRQ_ERROR		= (1 << 1), /* command execution error */
+	PORT_IRQ_PORTRDY_CHG	= (1 << 2), /* port ready change */
+	PORT_IRQ_PWR_CHG	= (1 << 3), /* power management change */
+	PORT_IRQ_PHYRDY_CHG	= (1 << 4), /* PHY ready change */
+	PORT_IRQ_COMWAKE	= (1 << 5), /* COMWAKE received */
+	PORT_IRQ_UNK_FIS	= (1 << 6), /* unknown FIS received */
+	PORT_IRQ_DEV_XCHG	= (1 << 7), /* device exchanged */
+	PORT_IRQ_8B10B		= (1 << 8), /* 8b/10b decode error threshold */
+	PORT_IRQ_CRC		= (1 << 9), /* CRC error threshold */
+	PORT_IRQ_HANDSHAKE	= (1 << 10), /* handshake error threshold */
+	PORT_IRQ_SDB_NOTIFY	= (1 << 11), /* SDB notify received */
+
+	DEF_PORT_IRQ		= PORT_IRQ_COMPLETE | PORT_IRQ_ERROR |
+				  PORT_IRQ_PHYRDY_CHG | PORT_IRQ_DEV_XCHG |
+				  PORT_IRQ_UNK_FIS | PORT_IRQ_SDB_NOTIFY,
+
+	/* bits[27:16] are unmasked (raw) */
+	PORT_IRQ_RAW_SHIFT	= 16,
+	PORT_IRQ_MASKED_MASK	= 0x7ff,
+	PORT_IRQ_RAW_MASK	= (0x7ff << PORT_IRQ_RAW_SHIFT),
+
+	/* ENABLE_SET/CLR specific, intr steering - 2 bit field */
+	PORT_IRQ_STEER_SHIFT	= 30,
+	PORT_IRQ_STEER_MASK	= (3 << PORT_IRQ_STEER_SHIFT),
+
+	/* PORT_CMD_ERR constants */
+	PORT_CERR_DEV		= 1, /* Error bit in D2H Register FIS */
+	PORT_CERR_SDB		= 2, /* Error bit in SDB FIS */
+	PORT_CERR_DATA		= 3, /* Error in data FIS not detected by dev */
+	PORT_CERR_SEND		= 4, /* Initial cmd FIS transmission failure */
+	PORT_CERR_INCONSISTENT	= 5, /* Protocol mismatch */
+	PORT_CERR_DIRECTION	= 6, /* Data direction mismatch */
+	PORT_CERR_UNDERRUN	= 7, /* Ran out of SGEs while writing */
+	PORT_CERR_OVERRUN	= 8, /* Ran out of SGEs while reading */
+
+	/* bits of PRB control field */
+	PRB_CTRL_PROTOCOL	= (1 << 0), /* override def. ATA protocol */
+	PRB_CTRL_PACKET_READ	= (1 << 4), /* PACKET cmd read */
+	PRB_CTRL_PACKET_WRITE	= (1 << 5), /* PACKET cmd write */
+	PRB_CTRL_NIEN		= (1 << 6), /* Mask completion irq */
+	PRB_CTRL_SRST		= (1 << 7), /* Soft reset request (ign BSY?) */
+
+	/* PRB protocol field */
+	PRB_PROT_PACKET		= (1 << 0),
+	PRB_PROT_TCQ		= (1 << 1),
+	PRB_PROT_NCQ		= (1 << 2),
+	PRB_PROT_READ		= (1 << 3),
+	PRB_PROT_WRITE		= (1 << 4),
+	PRB_PROT_TRANSPARENT	= (1 << 5),
+
+	/*
+	 * Other constants
+	 */
+	SGE_TRM			= (1 << 31), /* Last SGE in chain */
+	SGE_LNK			= (1 << 30), /* linked list
+						Points to SGT, not SGE */
+	SGE_DRD			= (1 << 29), /* discard data read (/dev/null)
+						data address ignored */
+
+	CMD_ERR		= 0x21,
+};
+
+#endif