gemini: add ata driver

Signed-off-by: Roman Yeryomin <roman@advem.lv>

SVN-Revision: 43885

3 files changed, 428 insertions, 0 deletions

diff --git a/target/linux/gemini/config-3.10 b/target/linux/gemini/config-3.10
index fdddd10a56..c6bcff199f 100644
--- a/target/linux/gemini/config-3.10
+++ b/target/linux/gemini/config-3.10
@@ -16,6 +16,7 @@ CONFIG_ARM_L1_CACHE_SHIFT=5
 CONFIG_ARM_NR_BANKS=8
 CONFIG_ARM_PATCH_PHYS_VIRT=y
 # CONFIG_ARPD is not set
+CONFIG_ATA=y
 CONFIG_ATAGS=y
 # CONFIG_CACHE_L2X0 is not set
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
@@ -129,6 +130,7 @@ CONFIG_OLD_SIGACTION=y
 CONFIG_OLD_SIGSUSPEND3=y
 CONFIG_PAGEFLAGS_EXTENDED=y
 CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PATA_GEMINI=y
 CONFIG_PCI=y
 CONFIG_PERF_USE_VMALLOC=y
 CONFIG_PHYLIB=y
diff --git a/target/linux/gemini/files/drivers/ata/pata_gemini.c b/target/linux/gemini/files/drivers/ata/pata_gemini.c
new file mode 100644
index 0000000000..707e8703bf
--- /dev/null
+++ b/target/linux/gemini/files/drivers/ata/pata_gemini.c
@@ -0,0 +1,234 @@
+/*
+ *  Support for Gemini PATA
+ *
+ *  Copyright (C) 2009 Janos Laube <janos.dev@gmail.com>
+ *  Copyright (C) 2010 Frederic Pecourt <opengemini@free.fr>
+ *  Copyright (C) 2011 Tobias Waldvogel <tobias.waldvogel@gmail.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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/* Values of IOMUX
+ * 26:24 bits is "IDE IO Select"
+ * 111:100 - Reserved
+ * 011 - ata0 <-> sata0, sata1; bring out ata1
+ * 010 - ata1 <-> sata1, sata0; bring out ata0
+ * 001 - ata0 <-> sata0, ata1 <-> sata1; bring out ata1
+ * 000 - ata0 <-> sata0, ata1 <-> sata1; bring out ata0
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/libata.h>
+#include <linux/leds.h>
+
+#include <mach/hardware.h>
+#include <mach/global_reg.h>
+
+#define DRV_NAME		"pata-gemini"
+
+#define PATA_GEMINI_PORTS	1
+
+#define PIO_TIMING_REG		0x10
+#define MDMA_TIMING_REG		0x11
+#define UDMA_TIMING0_REG	0x12
+#define UDMA_TIMING1_REG	0x13
+#define CLK_MOD_REG		0x14
+
+#define CLK_MOD_66M_DEV0_BIT	0
+#define CLK_MOD_66M_DEV1_BIT	1
+#define CLK_MOD_UDMA_DEV0_BIT	4
+#define CLK_MOD_UDMA_DEV1_BIT	5
+
+#define CLK_MOD_66M_DEV0	(1 << CLK_MOD_66M_DEV0_BIT)
+#define CLK_MOD_66M_DEV1	(1 << CLK_MOD_66M_DEV1_BIT)
+#define CLK_MOD_UDMA_DEV0	(1 << CLK_MOD_UDMA_DEV0_BIT)
+#define CLK_MOD_UDMA_DEV1	(1 << CLK_MOD_UDMA_DEV1_BIT)
+
+#define SATA_ENABLE_PDEV_MASK		0x01
+#define SATA_ENABLE_PDEV_PM		0x02
+#define SATA_ENABLE_PDEV_ADDED		0x04
+#define SATA_ENABLE_PDEV_REMOVED	0x08
+#define SATA_ENABLE_SDEV_MASK		0x10
+#define SATA_ENABLE_SDEV_PM		0x20
+#define SATA_ENABLE_SDEV_ADDED		0x40
+#define SATA_ENABLE_SDEV_REMOVED	0x80
+
+MODULE_AUTHOR("Janos Laube <janos.dev@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
+
+static unsigned char PIO_TIMING[5] = {
+	0xaa, 0xa3, 0xa1, 0x33, 0x31
+};
+
+static unsigned char TIMING_MW_DMA[4][2] = {
+	{ 0x44, 1 }, // 480        4.2
+	{ 0x42, 1 }, // 150       13.3
+	{ 0x31, 1 }, // 120       16.7
+	{ 0x21, 1 }, // 100       20
+};
+
+static unsigned char TIMING_UDMA[7][2] = {
+	{ 0x33, 0 }, //240        16.7
+	{ 0x31, 0 }, //160        25
+	{ 0x21, 0 }, //120        33.3
+	{ 0x21, 1 }, //90         44.4
+	{ 0x11, 1 }, //60         66.7
+	{ 0x11 | 0x80, 0 }, //40  100
+	{ 0x11 | 0x80, 1 }, //30  133
+};
+
+static struct scsi_host_template pata_gemini_sht = {
+	ATA_NCQ_SHT(DRV_NAME),
+	.can_queue	= 1,
+	.sg_tablesize	= 128,
+	.dma_boundary	= 0xffffU,
+};
+
+static void gemini_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+	void __iomem *clk_reg	= ap->ioaddr.bmdma_addr + CLK_MOD_REG;
+	void __iomem *tim_reg	= ap->ioaddr.bmdma_addr + UDMA_TIMING0_REG;
+	unsigned short udma	= adev->dma_mode;
+	unsigned short speed	= udma;
+	unsigned short devno	= adev->devno & 1;
+	unsigned short i;
+	u8 mod_udma_mask	= 1 << (CLK_MOD_UDMA_DEV0_BIT + devno);
+	u8 mod_66m_mask		= 1 << (CLK_MOD_66M_DEV0_BIT + devno);
+	u8 clk_mod;
+	u8 timing;
+
+	clk_mod = ioread8(clk_reg);
+	clk_mod &= ~mod_udma_mask;
+
+	if (speed & XFER_UDMA_0) {
+		i = speed & ~XFER_UDMA_0;
+		timing = TIMING_UDMA[i][0];
+		clk_mod |= mod_udma_mask;
+		if (TIMING_UDMA[i][1])
+			clk_mod |= mod_66m_mask;
+	} else {
+		i = speed & ~XFER_MW_DMA_0;
+		timing = TIMING_MW_DMA[i][0];
+		clk_mod |= mod_udma_mask;
+		if (TIMING_MW_DMA[i][1])
+			clk_mod |= mod_66m_mask;
+	}
+
+	iowrite8(clk_mod, clk_reg);
+	iowrite8(timing, tim_reg + devno);
+	return;
+}
+
+static void gemini_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+	void __iomem *pio_reg	= ap->ioaddr.bmdma_addr + PIO_TIMING_REG;
+	unsigned int pio	= adev->pio_mode - XFER_PIO_0;
+
+	iowrite8(PIO_TIMING[pio], pio_reg);
+}
+
+unsigned int gemini_qc_issue(struct ata_queued_cmd *qc)
+{
+	ledtrig_ide_activity();
+	return ata_bmdma_qc_issue(qc);
+}
+
+static struct ata_port_operations pata_gemini_port_ops = {
+	.inherits	= &ata_bmdma_port_ops,
+	.set_dmamode	= gemini_set_dmamode,
+	.set_piomode	= gemini_set_piomode,
+	.qc_issue	= gemini_qc_issue,
+};
+
+static struct ata_port_info pata_gemini_portinfo = {
+	.flags		= 0,
+	.udma_mask	= ATA_UDMA6,
+	.pio_mask	= ATA_PIO4,
+	.port_ops	= &pata_gemini_port_ops,
+};
+
+static const struct ata_port_info *pata_gemini_ports = &pata_gemini_portinfo;
+
+static int pata_gemini_probe(struct platform_device *pdev)
+{
+	struct ata_host *host;
+	struct resource *res;
+	unsigned int irq, i;
+	void __iomem *mmio_base;
+
+	/* standard bdma init */
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
+
+	pr_info(DRV_NAME ": irq %d, io base 0x%08x\n", irq, res->start);
+
+	mmio_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+
+	host = ata_host_alloc_pinfo(&pdev->dev, &pata_gemini_ports, 1);
+	if (!host)
+		return -ENOMEM;
+
+	for (i = 0; i < host->n_ports; i++) {
+		struct ata_port *ap = host->ports[i];
+		struct ata_ioports *ioaddr = &ap->ioaddr;
+
+		ioaddr->bmdma_addr		= mmio_base;
+		ioaddr->cmd_addr		= mmio_base + 0x20;
+		ioaddr->ctl_addr		= mmio_base + 0x36;
+		ioaddr->altstatus_addr		= ioaddr->ctl_addr;
+		ata_sff_std_ports(ioaddr);
+		host->ports[i]->cbl = ATA_CBL_SATA;
+	}
+
+	return ata_host_activate(host, irq, ata_bmdma_interrupt,
+		IRQF_SHARED, &pata_gemini_sht);
+}
+
+static int pata_gemini_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct ata_host *host = dev_get_drvdata(dev);
+	ata_host_detach(host);
+	return 0;
+}
+
+static struct platform_driver pata_gemini_driver = {
+	.probe		= pata_gemini_probe,
+	.remove		= pata_gemini_remove,
+	.driver.owner	= THIS_MODULE,
+	.driver.name	= DRV_NAME,
+};
+
+static int __init pata_gemini_module_init(void)
+{
+	return platform_driver_probe(&pata_gemini_driver, pata_gemini_probe);
+}
+
+static void __exit pata_gemini_module_exit(void)
+{
+	platform_driver_unregister(&pata_gemini_driver);
+}
+
+module_init(pata_gemini_module_init);
+module_exit(pata_gemini_module_exit);
diff --git a/target/linux/gemini/patches-3.10/150-gemini-pata.patch b/target/linux/gemini/patches-3.10/150-gemini-pata.patch
new file mode 100644
index 0000000000..1f3f451337
--- /dev/null
+++ b/target/linux/gemini/patches-3.10/150-gemini-pata.patch
@@ -0,0 +1,192 @@
+--- a/arch/arm/mach-gemini/include/mach/global_reg.h
++++ b/arch/arm/mach-gemini/include/mach/global_reg.h
+@@ -227,7 +227,13 @@
+ #define USB0_PLUG_MINIB			(1 << 29)
+ #define GMAC_GMII			(1 << 28)
+ #define GMAC_1_ENABLE			(1 << 27)
+-/* TODO: define ATA/SATA bits */
++/* 011 - ata0 <-> sata0, sata1; bring out ata1
++ * 010 - ata1 <-> sata1, sata0; bring out ata0
++ * 001 - ata0 <-> sata0, ata1 <-> sata1; bring out ata1
++ * 000 - ata0 <-> sata0, ata1 <-> sata1; bring out ata0 */
++#define IDE_IOMUX_MASK			(7 << 24)
++#define IDE_IOMUX_SATA1_SATA0	(2 << 24)
++#define IDE_IOMUX_SATA0_SATA1	(3 << 24)
+ #define USB1_VBUS_ON			(1 << 23)
+ #define USB0_VBUS_ON			(1 << 22)
+ #define APB_CLKOUT_ENABLE		(1 << 21)
+--- a/arch/arm/mach-gemini/irq.c	2013-02-19 13:38:13.263948000 +0100
++++ b/arch/arm/mach-gemini/irq.c	2013-02-19 18:24:02.912997292 +0100
+@@ -88,6 +88,9 @@
+ 			irq_set_handler(i, handle_edge_irq);
+ 			mode |= 1 << i;
+ 			level |= 1 << i;
++ 		} else if (i >= IRQ_IDE0 && i <= IRQ_IDE1) {
++ 			irq_set_handler(i, handle_edge_irq);
++ 			mode |= 1 << i;
+ 		} else {			
+ 			irq_set_handler(i, handle_level_irq);
+ 		}
+--- a/arch/arm/mach-gemini/common.h
++++ b/arch/arm/mach-gemini/common.h
+@@ -29,6 +29,7 @@
+ extern int platform_register_watchdog(void);
+ extern int platform_register_ethernet(struct gemini_gmac_platform_data *pdata);
+ extern int platform_register_usb(unsigned int id);
++extern int platform_register_pata(unsigned int id);
+ 
+ extern void gemini_restart(char mode, const char *cmd);
+ 
+--- a/arch/arm/mach-gemini/devices.c
++++ b/arch/arm/mach-gemini/devices.c
+@@ -249,3 +249,67 @@
+ 	return platform_device_register(&usb_device[id]);
+ }
+ 
++static u64 pata_gemini_dmamask0 = 0xffffffffUL;
++static u64 pata_gemini_dmamask1 = 0xffffffffUL;
++
++static struct resource pata_gemini_resources0[] =
++{
++	[0] =	{
++			.start	= GEMINI_IDE0_BASE,
++			.end	= GEMINI_IDE0_BASE + 0x40,
++			.flags	= IORESOURCE_MEM,
++		},
++	[1] =	{
++			.start	= IRQ_IDE0,
++			.end	= IRQ_IDE0,
++			.flags  = IORESOURCE_IRQ,
++		},
++};
++
++static struct resource pata_gemini_resources1[] =
++{
++	[0] =	{
++			.start	= GEMINI_IDE1_BASE,
++			.end	= GEMINI_IDE1_BASE + 0x40,
++			.flags	= IORESOURCE_MEM,
++		},
++	[1] =	{
++			.start  = IRQ_IDE1,
++			.end    = IRQ_IDE1,
++			.flags  = IORESOURCE_IRQ,
++		},
++};
++
++static struct platform_device pata_gemini_devices[] =
++{
++	{
++		.name		= "pata-gemini",
++		.id		= 0,
++		.dev		=
++		{
++			.dma_mask		= &pata_gemini_dmamask0,
++			.coherent_dma_mask	= 0xffffffff,
++		},
++		.num_resources	= ARRAY_SIZE(pata_gemini_resources0),
++		.resource	= pata_gemini_resources0,
++	},
++	{
++		.name		= "pata-gemini",
++		.id		= 1,
++		.dev		=
++		{
++			.dma_mask		= &pata_gemini_dmamask1,
++			.coherent_dma_mask	= 0xffffffff,
++		},
++		.num_resources	= ARRAY_SIZE(pata_gemini_resources1),
++		.resource	= pata_gemini_resources1,
++	},
++};
++
++int __init platform_register_pata(unsigned int id)
++{
++	if (id > 1)
++		return -EINVAL;
++
++	return platform_device_register(&pata_gemini_devices[id]);
++}
+--- a/arch/arm/mach-gemini/mm.c
++++ b/arch/arm/mach-gemini/mm.c
+@@ -24,6 +24,11 @@
+ 		.length		= SZ_512K,
+ 		.type 		= MT_DEVICE,
+ 	}, {
++		.virtual	= (unsigned long)IO_ADDRESS(GEMINI_SATA_BASE),
++		.pfn		= __phys_to_pfn(GEMINI_SATA_BASE),
++		.length		= SZ_512K,
++		.type		= MT_DEVICE,
++	}, {
+ 		.virtual	= (unsigned long)IO_ADDRESS(GEMINI_UART_BASE),
+ 		.pfn		= __phys_to_pfn(GEMINI_UART_BASE),
+ 		.length		= SZ_512K,
+--- a/drivers/ata/Kconfig
++++ b/drivers/ata/Kconfig
+@@ -433,6 +433,16 @@ config PATA_EFAR
+ 
+ 	  If unsure, say N.
+ 
++config PATA_GEMINI
++	tristate "Gemini PATA support (Experimental)"
++	depends on ARCH_GEMINI
++	help
++	  This option enables support for the Gemini PATA-Controller.
++	  Note that the Gemini SoC has no native SATA-Controller but an
++	  onboard PATA-SATA bridge.
++
++	  If unsure, say N.
++
+ config PATA_HPT366
+ 	tristate "HPT 366/368 PATA support"
+ 	depends on PCI
+--- a/drivers/ata/Makefile
++++ b/drivers/ata/Makefile
+@@ -45,6 +45,7 @@
+ obj-$(CONFIG_PATA_CYPRESS)	+= pata_cypress.o
+ obj-$(CONFIG_PATA_EFAR)		+= pata_efar.o
+ obj-$(CONFIG_PATA_EP93XX)	+= pata_ep93xx.o
++obj-$(CONFIG_PATA_GEMINI)	+= pata_gemini.o
+ obj-$(CONFIG_PATA_HPT366)	+= pata_hpt366.o
+ obj-$(CONFIG_PATA_HPT37X)	+= pata_hpt37x.o
+ obj-$(CONFIG_PATA_HPT3X2N)	+= pata_hpt3x2n.o
+--- a/arch/arm/mach-gemini/board-nas4220b.c
++++ b/arch/arm/mach-gemini/board-nas4220b.c
+@@ -146,11 +146,28 @@
+ 		GLOBAL_MISC_CTRL));
+ }
+ 
++static void __init sata_ib4220b_init(void)
++{
++	unsigned val;
++
++	val = readl((void __iomem*)(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
++		GLOBAL_MISC_CTRL));
++	val &= ~(IDE_IOMUX_MASK | PFLASH_PADS_DISABLE);
++	val |= IDE_PADS_ENABLE;
++	writel(val, (void __iomem*)(IO_ADDRESS(GEMINI_GLOBAL_BASE) +
++		GLOBAL_MISC_CTRL));
++
++	/* enabling ports for presence detection, master only */
++	writel(0x00000001, (void __iomem*)(IO_ADDRESS(GEMINI_SATA_BASE) + 0x18));
++	writel(0x00000001, (void __iomem*)(IO_ADDRESS(GEMINI_SATA_BASE) + 0x1c));
++}
++
+ static void __init ib4220b_init(void)
+ {
+ 	gemini_gpio_init();
+ 	ib4220b_gmac_init();
+ 	usb_ib4220b_init();
++	sata_ib4220b_init();
+ 	platform_register_uart();
+ 	platform_register_pflash(SZ_16M, NULL, 0);
+ 	platform_device_register(&ib4220b_led_device);
+@@ -161,6 +178,8 @@
+ 	platform_register_ethernet(&ib4220b_gmac_data);
+ 	platform_register_usb(0);
+ 	platform_register_usb(1);
++	platform_register_pata(0);
++	platform_register_pata(1);
+ }
+ 
+ MACHINE_START(NAS4220B, "Raidsonic NAS IB-4220-B")