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--- 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*/
+
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