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191 lines
5.4 KiB
Diff
191 lines
5.4 KiB
Diff
--- a/arch/arm/mach-cns3xxx/devices.c
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+++ b/arch/arm/mach-cns3xxx/devices.c
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@@ -41,7 +41,7 @@ static struct resource cns3xxx_ahci_reso
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static u64 cns3xxx_ahci_dmamask = DMA_BIT_MASK(32);
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static struct platform_device cns3xxx_ahci_pdev = {
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- .name = "ahci",
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+ .name = "ahci-cns3xxx",
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.id = 0,
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.resource = cns3xxx_ahci_resource,
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.num_resources = ARRAY_SIZE(cns3xxx_ahci_resource),
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--- a/drivers/ata/Kconfig
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+++ b/drivers/ata/Kconfig
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@@ -83,6 +83,17 @@ config SATA_AHCI_PLATFORM
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If unsure, say N.
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+config SATA_AHCI_CNS3XXX
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+ bool "AHCI Support on the Cavium Networks CNS3xxx SOC"
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+ depends on ARCH_CNS3XXX
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+ depends on SATA_AHCI_PLATFORM
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+ help
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+ This option enables AHCI platform driver to support CNS3xxx
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+ System-on-Chip devices. This is only needed when using CNS3xxx AHCI
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+ controller.
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+
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+ If unsure, say N.
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+
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config SATA_FSL
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tristate "Freescale 3.0Gbps SATA support"
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depends on FSL_SOC
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--- a/drivers/ata/Makefile
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+++ b/drivers/ata/Makefile
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@@ -4,7 +4,10 @@ obj-$(CONFIG_ATA) += libata.o
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# non-SFF interface
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obj-$(CONFIG_SATA_AHCI) += ahci.o libahci.o
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obj-$(CONFIG_SATA_ACARD_AHCI) += acard-ahci.o libahci.o
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-obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platform.o libahci.o
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+obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platforms.o libahci.o
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+ahci_platforms-y += ahci_platform.o
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+ahci_platforms-$(CONFIG_SATA_AHCI_CNS3XXX) += ahci_cns3xxx.o
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+
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obj-$(CONFIG_SATA_FSL) += sata_fsl.o
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obj-$(CONFIG_SATA_INIC162X) += sata_inic162x.o
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obj-$(CONFIG_SATA_SIL24) += sata_sil24.o
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--- /dev/null
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+++ b/drivers/ata/ahci_cns3xxx.c
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@@ -0,0 +1,52 @@
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+/*
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+ * AHCI support for CNS3xxx SoC
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+ *
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+ * Copyright 2010 MontaVista Software, LLC.
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+ * Copyright 2010 Cavium Networks
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+ *
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+ * Authors: Anton Vorontsov <avorontsov@xxxxxxxxxx>
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+ * Mac Lin <mkl0301@xxxxxxxxx>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#include <linux/libata.h>
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+#include <linux/ahci_platform.h>
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+#include "ahci.h"
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+
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+/*
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+ * TODO: move cns3xxx_ahci_init to here after cns3xxx_pwr*() calls are
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+ * thread-safe
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+ */
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+
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+static int cns3xxx_ahci_softreset(struct ata_link *link, unsigned int *class,
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+ unsigned long deadline)
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+{
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+ int pmp = sata_srst_pmp(link);
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+ int ret;
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+
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+ ret = ahci_do_softreset(link, class, pmp, deadline, ahci_check_ready);
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+ if (pmp && ret)
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+ return ahci_do_softreset(link, class, 0, deadline,
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+ ahci_check_ready);
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+ return ret;
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+}
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+
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+static struct ata_port_operations cns3xxx_ahci_ops = {
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+ .inherits = &ahci_ops,
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+ .softreset = cns3xxx_ahci_softreset,
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+};
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+
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+static const struct ata_port_info cns3xxx_ata_port_info = {
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+ .flags = AHCI_FLAG_COMMON,
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+ .pio_mask = ATA_PIO4,
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+ .udma_mask = ATA_UDMA6,
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+ .port_ops = &cns3xxx_ahci_ops,
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+};
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+
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+struct ahci_platform_data cns3xxx_ahci_platform_data = {
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+ .ata_port_info = &cns3xxx_ata_port_info,
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+};
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+
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--- a/drivers/ata/ahci_platform.c
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+++ b/drivers/ata/ahci_platform.c
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@@ -19,9 +19,11 @@
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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+#include <linux/mod_devicetable.h>
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#include <linux/libata.h>
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#include <linux/ahci_platform.h>
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#include "ahci.h"
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+#include "ahci_platform.h"
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static struct scsi_host_template ahci_platform_sht = {
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AHCI_SHT("ahci_platform"),
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@@ -29,6 +31,7 @@ static struct scsi_host_template ahci_pl
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static int __init ahci_probe(struct platform_device *pdev)
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{
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+ const struct platform_device_id *platid = platform_get_device_id(pdev);
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struct device *dev = &pdev->dev;
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struct ahci_platform_data *pdata = dev->platform_data;
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struct ata_port_info pi = {
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@@ -46,6 +49,9 @@ static int __init ahci_probe(struct plat
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int i;
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int rc;
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+ if (!pdata && platid && platid->driver_data)
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+ pdata = (void *)platid->driver_data;
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+
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mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!mem) {
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dev_err(dev, "no mmio space\n");
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@@ -171,17 +177,28 @@ static int __devexit ahci_remove(struct
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return 0;
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}
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+static const struct platform_device_id ahci_platform_ids[] = {
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+ { "ahci", },
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+#ifdef CONFIG_SATA_AHCI_CNS3XXX
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+ { "ahci-cns3xxx", (kernel_ulong_t)&cns3xxx_ahci_platform_data},
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+#endif
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+ { },
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+};
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+MODULE_DEVICE_TABLE(platform, ahci_platform_ids);
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+
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static struct platform_driver ahci_driver = {
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- .remove = __devexit_p(ahci_remove),
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.driver = {
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.name = "ahci",
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.owner = THIS_MODULE,
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},
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+ .probe = ahci_probe,
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+ .remove = __devexit_p(ahci_remove),
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+ .id_table = ahci_platform_ids,
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};
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static int __init ahci_init(void)
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{
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- return platform_driver_probe(&ahci_driver, ahci_probe);
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+ return platform_driver_register(&ahci_driver);
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}
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module_init(ahci_init);
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@@ -194,4 +211,3 @@ module_exit(ahci_exit);
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MODULE_DESCRIPTION("AHCI SATA platform driver");
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MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
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MODULE_LICENSE("GPL");
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-MODULE_ALIAS("platform:ahci");
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--- /dev/null
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+++ b/drivers/ata/ahci_platform.h
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@@ -0,0 +1,19 @@
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+/*
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+ * Copyright 2010 MontaVista Software, LLC.
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+ * Copyright 2010 Cavium Networks
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+ *
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+ * Authors: Anton Vorontsov <avorontsov@xxxxxxxxxx>
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+ * Mac Lin <mkl0301@xxxxxxxxx>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#ifndef _DRIVERS_SATA_AHCI_PLATFORMS_H
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+#define _DRIVERS_SATA_AHCI_PLATFORMS_H
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+
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+extern struct ahci_platform_data cns3xxx_ahci_platform_data;
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+
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+#endif /*_DRIVERS_SATA_AHCI_PLATFORMS_H*/
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+
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