Ok, I've done the fixes you suggested and tested the patch.
It is working fine, and I'm sending you (once again) the patch attached
to this e-mail.
In the meanwhile, I will post the entire patch to the 'arm-linux'
mailing list, iterating untill I get a final patch for the platform
dependent part.
Then, I will send the full patch back at linux-ide for submission.
I'll keep you both (Bart, Sergei) posted (CC) about iterations in the
'arm-linux' mailing list.
Best regards,
João Ramos
João Ramos escreveu:
Bartlomiej Zolnierkiewicz escreveu:
On Tuesday 19 May 2009 15:20:00 João Ramos wrote:
Ok, I will apply the changes, test them and then resubmit the final
patch.
By the way, I will submit the final patch through 'arm-linux'
mailing list, if that is OK to you, since the full patch has
platform-specific dependencies.
I mean, as long as we iterate with the IDE part of it untill it is
good for submission from you, I can submit it in 'arm-linux' with
your acknowledge, right?
It is good to post it also to linux-arm for additional review &
better merge
coordination but the patch itself should go through IDE tree and
linux-ide.
[ It is IDE host driver, has also IDE dependencies
(ide_{set,get}_drivedata()
patch) and there are some other pending IDE changes that will
require minor
updates to the patch. ]
Just ping me after platform-specific part is in and I'll push the driver
to Linus (of course given that everybody is happy with the final
version).
Thanks.
Bart
Ok, will do so.
João
--
************************************************************************
João Ramos <joao.ramos@xxxxxxx>
INOV INESC Inovação - ESTG Leiria
Escola Superior de Tecnologia e Gestão de Leiria
Edíficio C1, Campus 2
Morro do Lena, Alto do Vieiro
Leiria
2411-901 Leiria
Portugal
Tel: +351244843424
Fax: +351244843424
************************************************************************
Add IDE host controller support for Cirrus Logic's EP93xx CPUs.
Signed-off-by: Joao Ramos <joao.ramos@xxxxxxx>
Cc: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ryan Mallon <ryan@xxxxxxxxxxxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Cc: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxxxxxx>
---
diff -urN linux-2.6.30-rc6.orig/arch/arm/mach-ep93xx/core.c linux-2.6.30-rc6/arch/arm/mach-ep93xx/core.c
--- linux-2.6.30-rc6.orig/arch/arm/mach-ep93xx/core.c 2009-05-16 05:12:57.000000000 +0100
+++ linux-2.6.30-rc6/arch/arm/mach-ep93xx/core.c 2009-05-19 16:03:36.000000000 +0100
@@ -537,6 +537,31 @@
platform_device_register(&ep93xx_i2c_device);
}
+static struct resource ep93xx_ide_resources[] = {
+ {
+ .start = EP93XX_IDE_PHYS_BASE,
+ .end = EP93XX_IDE_PHYS_BASE + 0x37,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_EP93XX_EXT3,
+ .end = IRQ_EP93XX_EXT3,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device ep93xx_ide_device = {
+ .name = "ep93xx-ide",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(ep93xx_ide_resources),
+ .resource = ep93xx_ide_resources,
+};
+
+void __init ep93xx_register_ide(void)
+{
+ platform_device_register(&ep93xx_ide_device);
+}
+
extern void ep93xx_gpio_init(void);
void __init ep93xx_init_devices(void)
diff -urN linux-2.6.30-rc6.orig/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h linux-2.6.30-rc6/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
--- linux-2.6.30-rc6.orig/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h 2009-05-16 05:12:57.000000000 +0100
+++ linux-2.6.30-rc6/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h 2009-05-19 16:03:36.000000000 +0100
@@ -78,6 +78,7 @@
#define EP93XX_BOOT_ROM_BASE (EP93XX_AHB_VIRT_BASE + 0x00090000)
#define EP93XX_IDE_BASE (EP93XX_AHB_VIRT_BASE + 0x000a0000)
+#define EP93XX_IDE_PHYS_BASE (EP93XX_AHB_PHYS_BASE + 0x000a0000)
#define EP93XX_VIC1_BASE (EP93XX_AHB_VIRT_BASE + 0x000b0000)
diff -urN linux-2.6.30-rc6.orig/arch/arm/mach-ep93xx/include/mach/platform.h linux-2.6.30-rc6/arch/arm/mach-ep93xx/include/mach/platform.h
--- linux-2.6.30-rc6.orig/arch/arm/mach-ep93xx/include/mach/platform.h 2009-05-16 05:12:57.000000000 +0100
+++ linux-2.6.30-rc6/arch/arm/mach-ep93xx/include/mach/platform.h 2009-05-19 16:03:36.000000000 +0100
@@ -15,6 +15,7 @@
void ep93xx_map_io(void);
void ep93xx_init_irq(void);
void ep93xx_init_time(unsigned long);
+void ep93xx_register_ide(void);
void ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr);
void ep93xx_register_i2c(struct i2c_board_info *devices, int num);
void ep93xx_init_devices(void);
diff -urN linux-2.6.30-rc6.orig/drivers/ide/ep93xx-ide.c linux-2.6.30-rc6/drivers/ide/ep93xx-ide.c
--- linux-2.6.30-rc6.orig/drivers/ide/ep93xx-ide.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.30-rc6/drivers/ide/ep93xx-ide.c 2009-05-19 16:06:33.000000000 +0100
@@ -0,0 +1,521 @@
+/*
+ * Support for Cirrus Logic's EP93xx (EP9312, EP9315) CPUs
+ * IDE host controller driver.
+ *
+ * Copyright (c) 2009, Joao Ramos <joao.ramos@xxxxxxx>
+ * INESC Inovacao (INOV)
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/ide.h>
+#include <linux/delay.h>
+
+#define MODULE_NAME "ep93xx-ide"
+
+/*
+ * Configuration and usage of the IDE device is made through the
+ * IDE Interface Register Map (EP93xx User's Guide, Section 27).
+ *
+ * This section holds common registers and flag definitions for
+ * that interface.
+ */
+
+/*
+ * IDE Register offset
+ */
+#define IDECTRL 0x00
+#define IDECFG 0x04
+#define IDEMDMAOP 0x08
+#define IDEUDMAOP 0x0C
+#define IDEDATAOUT 0x10
+#define IDEDATAIN 0x14
+#define IDEMDMADATAOUT 0x18
+#define IDEMDMADATAIN 0x1C
+#define IDEUDMADATAOUT 0x20
+#define IDEUDMADATAIN 0x24
+#define IDEUDMASTS 0x28
+#define IDEUDMADEBUG 0x2C
+#define IDEUDMAWRBUFSTS 0x30
+#define IDEUDMARDBUFSTS 0x34
+
+/*
+ * IDE Control Register bit fields
+ */
+#define IDECTRL_CS0N 0x00000001
+#define IDECTRL_CS1N 0x00000002
+#define IDECTRL_DA 0x0000001C
+#define IDECTRL_DIORN 0x00000020
+#define IDECTRL_DIOWN 0x00000040
+#define IDECTRL_DASPN 0x00000080
+#define IDECTRL_DMARQ 0x00000100
+#define IDECTRL_INTRQ 0x00000200
+#define IDECTRL_IORDY 0x00000400
+
+/*
+ * IDE Configuration Register bit fields
+ */
+#define IDECFG_IDEEN 0x00000001
+#define IDECFG_PIO 0x00000002
+#define IDECFG_MDMA 0x00000004
+#define IDECFG_UDMA 0x00000008
+#define IDECFG_PIO_MODE_0 0x00000000
+#define IDECFG_PIO_MODE_1 0x00000010
+#define IDECFG_PIO_MODE_2 0x00000020
+#define IDECFG_PIO_MODE_3 0x00000030
+#define IDECFG_PIO_MODE_4 0x00000040
+#define IDECFG_MDMA_MODE_0 0x00000000
+#define IDECFG_MDMA_MODE_1 0x00000010
+#define IDECFG_MDMA_MODE_2 0x00000020
+#define IDECFG_UDMA_MODE_0 0x00000000
+#define IDECFG_UDMA_MODE_1 0x00000010
+#define IDECFG_UDMA_MODE_2 0x00000020
+#define IDECFG_UDMA_MODE_3 0x00000030
+#define IDECFG_UDMA_MODE_4 0x00000040
+#define IDECFG_WST 0x00000300
+
+/*
+ * Check whether IORDY is asserted or not.
+ */
+static inline int ep93xx_ide_check_iordy(void __iomem *base)
+{
+ u32 reg = readl(base + IDECTRL);
+
+ return (reg & IDECTRL_IORDY) ? 1 : 0;
+}
+
+/*
+ * IDE Interface register map default state
+ * (shutdown)
+ */
+static void ep93xx_ide_clean_regs(void __iomem *base)
+{
+ /* disable IDE interface initially */
+ writel(IDECTRL_CS0N | IDECTRL_CS1N | IDECTRL_DIORN |
+ IDECTRL_DIOWN, base + IDECTRL);
+
+ /* clear IDE registers */
+ writel(0, base + IDECFG);
+ writel(0, base + IDEMDMAOP);
+ writel(0, base + IDEUDMAOP);
+ writel(0, base + IDEDATAOUT);
+ writel(0, base + IDEDATAIN);
+ writel(0, base + IDEMDMADATAOUT);
+ writel(0, base + IDEMDMADATAIN);
+ writel(0, base + IDEUDMADATAOUT);
+ writel(0, base + IDEUDMADATAIN);
+ writel(0, base + IDEUDMADEBUG);
+}
+
+static u16 __ep93xx_ide_read(void __iomem *base, unsigned long addr,
+ struct ide_timing *t)
+{
+ u32 reg;
+
+ reg = addr | IDECTRL_DIORN | IDECTRL_DIOWN;
+ writel(reg, base + IDECTRL);
+ ndelay(t->setup);
+
+ reg &= ~IDECTRL_DIORN;
+ writel(reg, base + IDECTRL);
+ ndelay(t->active);
+
+ while (!ep93xx_ide_check_iordy(base))
+ cpu_relax();
+
+ reg |= IDECTRL_DIORN;
+ writel(reg, base + IDECTRL);
+ ndelay(t->recover);
+
+ return readl(base + IDEDATAIN);
+}
+
+static inline u16 ep93xx_ide_read(ide_hwif_t *hwif, unsigned long addr)
+{
+ void __iomem *base = hwif->host->host_priv;
+ struct ide_timing *t = (struct ide_timing *)ide_get_hwifdata(hwif);
+
+ return __ep93xx_ide_read(base, addr, t);
+}
+
+static void __ep93xx_ide_write(void __iomem *base, u16 value,
+ unsigned long addr, struct ide_timing *t)
+{
+ u32 reg;
+
+ reg = addr | IDECTRL_DIORN | IDECTRL_DIOWN;
+ writel(reg, base + IDECTRL);
+ ndelay(t->setup);
+
+ writel(value, base + IDEDATAOUT);
+
+ reg &= ~IDECTRL_DIOWN;
+ writel(reg, base + IDECTRL);
+ ndelay(t->active);
+
+ while (!ep93xx_ide_check_iordy(base))
+ cpu_relax();
+
+ reg |= IDECTRL_DIOWN;
+ writel(reg, base + IDECTRL);
+ ndelay(t->recover);
+}
+
+static inline void ep93xx_ide_write(ide_hwif_t *hwif, u16 value,
+ unsigned long addr)
+{
+ void __iomem *base = hwif->host->host_priv;
+ struct ide_timing *t = (struct ide_timing *)ide_get_hwifdata(hwif);
+
+ __ep93xx_ide_write(base, value, addr, t);
+}
+
+/*
+ * EP93xx IDE PIO Transport Operations
+ */
+
+static void ep93xx_ide_exec_command(struct hwif_s *hwif, u8 cmd)
+{
+ ep93xx_ide_write(hwif, cmd, hwif->io_ports.command_addr);
+}
+
+static u8 ep93xx_ide_read_status(ide_hwif_t *hwif)
+{
+ return ep93xx_ide_read(hwif, hwif->io_ports.status_addr);
+}
+
+static u8 ep93xx_ide_read_altstatus(ide_hwif_t *hwif)
+{
+ return ep93xx_ide_read(hwif, hwif->io_ports.ctl_addr);
+}
+
+static void ep93xx_ide_write_devctl(ide_hwif_t *hwif, u8 ctl)
+{
+ ep93xx_ide_write(hwif, ctl, hwif->io_ports.ctl_addr);
+}
+
+static void ep93xx_ide_dev_select(ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ u8 select = drive->select | ATA_DEVICE_OBS;
+
+ ep93xx_ide_write(hwif, select, hwif->io_ports.device_addr);
+}
+
+static void ep93xx_ide_tf_load(ide_drive_t *drive, struct ide_taskfile *tf,
+ u8 valid)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ struct ide_io_ports *io_ports = &hwif->io_ports;
+
+ if (valid & IDE_VALID_FEATURE)
+ ep93xx_ide_write(hwif, tf->feature, io_ports->feature_addr);
+ if (valid & IDE_VALID_NSECT)
+ ep93xx_ide_write(hwif, tf->nsect, io_ports->nsect_addr);
+ if (valid & IDE_VALID_LBAL)
+ ep93xx_ide_write(hwif, tf->lbal, io_ports->lbal_addr);
+ if (valid & IDE_VALID_LBAM)
+ ep93xx_ide_write(hwif, tf->lbam, io_ports->lbam_addr);
+ if (valid & IDE_VALID_LBAH)
+ ep93xx_ide_write(hwif, tf->lbah, io_ports->lbah_addr);
+ if (valid & IDE_VALID_DEVICE)
+ ep93xx_ide_write(hwif, tf->device, io_ports->device_addr);
+}
+
+static void ep93xx_ide_tf_read(ide_drive_t *drive, struct ide_taskfile *tf,
+ u8 valid)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ struct ide_io_ports *io_ports = &hwif->io_ports;
+
+ if (valid & IDE_VALID_ERROR)
+ tf->error = ep93xx_ide_read(hwif, io_ports->feature_addr);
+ if (valid & IDE_VALID_NSECT)
+ tf->nsect = ep93xx_ide_read(hwif, io_ports->nsect_addr);
+ if (valid & IDE_VALID_LBAL)
+ tf->lbal = ep93xx_ide_read(hwif, io_ports->lbal_addr);
+ if (valid & IDE_VALID_LBAM)
+ tf->lbam = ep93xx_ide_read(hwif, io_ports->lbam_addr);
+ if (valid & IDE_VALID_LBAH)
+ tf->lbah = ep93xx_ide_read(hwif, io_ports->lbah_addr);
+ if (valid & IDE_VALID_DEVICE)
+ tf->device = ep93xx_ide_read(hwif, io_ports->device_addr);
+}
+
+static void ep93xx_ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
+ void *buf, unsigned int len)
+{
+ u16 *data = (u16 *)buf;
+ ide_hwif_t *hwif = drive->hwif;
+ void __iomem *base = hwif->host->host_priv;
+ unsigned long data_addr = hwif->io_ports.data_addr;
+ struct ide_timing *t = (struct ide_timing *)ide_get_drivedata(drive);
+ unsigned int words = (len + 1) >> 1;
+
+ while (words--)
+ *data++ = cpu_to_le16(__ep93xx_ide_read(base, data_addr, t));
+}
+
+static void ep93xx_ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
+ void *buf, unsigned int len)
+{
+ u16 *data = (u16 *)buf;
+ ide_hwif_t *hwif = drive->hwif;
+ void __iomem *base = hwif->host->host_priv;
+ unsigned long data_addr = hwif->io_ports.data_addr;
+ struct ide_timing *t = (struct ide_timing *)ide_get_drivedata(drive);
+ unsigned int words = (len + 1) >> 1;
+
+ while (words--)
+ __ep93xx_ide_write(base, le16_to_cpu(*data++), data_addr, t);
+}
+
+static struct ide_tp_ops ep93xx_ide_tp_ops = {
+ .exec_command = ep93xx_ide_exec_command,
+ .read_status = ep93xx_ide_read_status,
+ .read_altstatus = ep93xx_ide_read_altstatus,
+ .write_devctl = ep93xx_ide_write_devctl,
+ .dev_select = ep93xx_ide_dev_select,
+ .tf_load = ep93xx_ide_tf_load,
+ .tf_read = ep93xx_ide_tf_read,
+ .input_data = ep93xx_ide_input_data,
+ .output_data = ep93xx_ide_output_data,
+};
+
+static void ep93xx_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
+{
+ ide_drive_t *pair = ide_get_pair_dev(drive);
+ struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
+ struct ide_timing *cmd_t = t;
+ u32 reg = IDECFG_IDEEN | IDECFG_PIO;
+ void __iomem *base = drive->hwif->host->host_priv;
+
+ if (pair) {
+ struct ide_timing *pair_t = ide_get_drivedata(pair);
+
+ if (pair_t && pair_t->mode < t->mode)
+ cmd_t = pair_t;
+ }
+
+ /*
+ * store the adequate PIO mode timings, to be used later
+ * by ep93xx_ide_{read,write}
+ */
+ ide_set_drivedata(drive, (void *)t);
+ ide_set_hwifdata(drive->hwif, (void *)cmd_t);
+
+ /* reconfigure IDE controller according to PIO mode */
+ switch (pio) {
+ case 4:
+ reg |= IDECFG_PIO_MODE_4 | ((1 << 8) & IDECFG_WST);
+ break;
+ case 3:
+ reg |= IDECFG_PIO_MODE_3 | ((1 << 8) & IDECFG_WST);
+ break;
+ case 2:
+ reg |= IDECFG_PIO_MODE_2 | ((2 << 8) & IDECFG_WST);
+ break;
+ case 1:
+ reg |= IDECFG_PIO_MODE_1 | ((2 << 8) & IDECFG_WST);
+ break;
+ case 0:
+ default:
+ reg |= IDECFG_PIO_MODE_0 | ((3 << 8) & IDECFG_WST);
+ break;
+ }
+ writel(reg, base + IDECFG);
+}
+
+static struct ide_port_ops ep93xx_ide_port_ops = {
+ .set_pio_mode = ep93xx_ide_set_pio_mode,
+};
+
+static struct ide_port_info ep93xx_ide_port_info = {
+ .name = MODULE_NAME,
+ .tp_ops = &ep93xx_ide_tp_ops,
+ .port_ops = &ep93xx_ide_port_ops,
+ .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE |
+ IDE_HFLAG_NO_DMA | IDE_HFLAG_MMIO |
+ IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_NO_UNMASK_IRQS,
+ .pio_mask = ATA_PIO4,
+};
+
+static int __init ep93xx_ide_probe(struct platform_device *pdev)
+{
+ int retval;
+ int irq;
+ void __iomem *ide_base;
+ struct resource *mem_res;
+ hw_regs_t hw;
+ hw_regs_t *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_host *host;
+
+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem_res) {
+ dev_err(&pdev->dev,
+ "could not retrieve device memory resources!\n");
+ return -ENXIO;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev,
+ "could not retrieve device IRQ resource!\n");
+ return -ENXIO;
+ }
+
+ if (!request_mem_region
+ (mem_res->start, mem_res->end - mem_res->start + 1, MODULE_NAME)) {
+ dev_err(&pdev->dev, "could not request memory resources!\n");
+ return -EBUSY;
+ }
+
+ ide_base = ioremap(mem_res->start, mem_res->end - mem_res->start + 1);
+ if (!ide_base) {
+ dev_err(&pdev->dev, "could not map memory resources!\n");
+ retval = -ENOMEM;
+ goto fail_release_mem;
+ }
+
+ memset(&hw, 0, sizeof(hw));
+
+ /*
+ * fill in ide_io_ports structure.
+ * the device IDE register to be accessed is selected through
+ * IDECTRL register's specific bitfields 'DA', 'CS1n' and 'CS0n':
+ * b4 b3 b2 b1 b0
+ * A2 A1 A0 CS1n CS0n
+ * the values filled in this structure allows the value to be directly
+ * ORed to the IDECTRL register, hence giving directly the A[2:0] and
+ * CS1n/CS0n values for each IDE register.
+ * The values correspond to the transformation:
+ * ((real IDE address) << 2) | CS1n value << 1 | CS0n value
+ */
+ hw.io_ports.data_addr = 0x02;
+ hw.io_ports.error_addr = 0x06;
+ hw.io_ports.nsect_addr = 0x0A;
+ hw.io_ports.lbal_addr = 0x0E;
+ hw.io_ports.lbam_addr = 0x12;
+ hw.io_ports.lbah_addr = 0x16;
+ hw.io_ports.device_addr = 0x1A;
+ hw.io_ports.command_addr = 0x1E;
+ hw.io_ports.ctl_addr = 0x01;
+
+ hw.irq = irq;
+ hw.chipset = ide_generic;
+ hw.dev = &pdev->dev;
+
+ /* enforce EP93xx IDE controller reset state */
+ ep93xx_ide_clean_regs(ide_base);
+
+ /* set gpio port E, G and H for IDE */
+ ep93xx_ide_aquire_gpios();
+
+ /*
+ * configure IDE interface:
+ * - IDE Master Enable
+ * - Polled IO Operation
+ * - PIO Mode 0 -> 3.33 MBps
+ * - 3 Wait States -> 30 ns
+ */
+ writel(IDECFG_IDEEN | IDECFG_PIO | IDECFG_PIO_MODE_0 |
+ ((3 << 8) & IDECFG_WST), ide_base + IDECFG);
+
+ host = ide_host_alloc(&ep93xx_ide_port_info, hws);
+ if (!host) {
+ dev_err(&pdev->dev,
+ "failed to allocate memory for EP93xx IDE host!\n");
+ retval = -ENOMEM;
+ goto fail_unmap;
+ }
+
+ host->host_priv = ide_base;
+
+ retval = ide_host_register(host, &ep93xx_ide_port_info, hws);
+ if (retval) {
+ dev_err(&pdev->dev,
+ "unable to register EP93xx IDE driver!\n");
+ goto fail_free_host;
+ }
+
+ platform_set_drvdata(pdev, host);
+
+ dev_info(&pdev->dev, "EP93xx IDE host controller driver initialized\n");
+
+ return 0;
+
+fail_free_host:
+ ide_host_free(host);
+fail_unmap:
+ iounmap(ide_base);
+fail_release_mem:
+ release_mem_region(mem_res->start, mem_res->end - mem_res->start + 1);
+ return retval;
+}
+
+static int __devexit ep93xx_ide_remove(struct platform_device *pdev)
+{
+ struct ide_host *host = pdev->dev.driver_data;
+ void __iomem *base = host->host_priv;
+ struct resource *mem_res;
+
+ ide_host_remove(host);
+
+ /* reset state */
+ ep93xx_ide_clean_regs(base);
+
+ /* restore back GPIO port E, G and H for GPIO use */
+ ep93xx_ide_release_gpios();
+
+ iounmap(base);
+
+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(mem_res->start, mem_res->end - mem_res->start + 1);
+
+ return 0;
+}
+
+static struct platform_driver ep93xx_ide_driver = {
+ .remove = __exit_p(ep93xx_ide_remove),
+ .driver = {
+ .name = MODULE_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ep93xx_ide_init(void)
+{
+ return platform_driver_probe(&ep93xx_ide_driver, ep93xx_ide_probe);
+}
+module_init(ep93xx_ide_init);
+
+static void __exit ep93xx_ide_exit(void)
+{
+ platform_driver_unregister(&ep93xx_ide_driver);
+}
+module_exit(ep93xx_ide_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Joao Ramos <joao.ramos@xxxxxxx>");
+MODULE_DESCRIPTION("EP93xx IDE host controller driver");
+MODULE_VERSION("1.0");
+MODULE_ALIAS("platform:ep93xx-ide");
diff -urN linux-2.6.30-rc6.orig/drivers/ide/Kconfig linux-2.6.30-rc6/drivers/ide/Kconfig
--- linux-2.6.30-rc6.orig/drivers/ide/Kconfig 2009-05-16 05:12:57.000000000 +0100
+++ linux-2.6.30-rc6/drivers/ide/Kconfig 2009-05-19 16:03:36.000000000 +0100
@@ -732,6 +732,19 @@
depends on ARM && ARCH_AT91 && !ARCH_AT91RM9200 && !ARCH_AT91X40
select IDE_TIMINGS
+config BLK_DEV_IDE_EP93XX
+ tristate "Cirrus Logic EPxx (EP9312, EP9315) IDE support"
+ depends on ARM && ARCH_EP93XX
+ select IDE_TIMINGS
+ help
+ This is a host controller driver for IDE hardware included in
+ Cirrus Logic's EP9312 and EP9315 CPUs.
+ Say Y here if you want to enable the IDE host controller support
+ for your machine.
+
+ Choose 'M' to compile this driver as a module; the module will be
+ called 'ep93xx-ide'.
+
config BLK_DEV_IDE_ICSIDE
tristate "ICS IDE interface support"
depends on ARM && ARCH_ACORN
diff -urN linux-2.6.30-rc6.orig/drivers/ide/Makefile linux-2.6.30-rc6/drivers/ide/Makefile
--- linux-2.6.30-rc6.orig/drivers/ide/Makefile 2009-05-16 05:12:57.000000000 +0100
+++ linux-2.6.30-rc6/drivers/ide/Makefile 2009-05-19 16:03:36.000000000 +0100
@@ -117,3 +117,4 @@
obj-$(CONFIG_BLK_DEV_IDE_TX4938) += tx4938ide.o
obj-$(CONFIG_BLK_DEV_IDE_TX4939) += tx4939ide.o
obj-$(CONFIG_BLK_DEV_IDE_AT91) += at91_ide.o
+obj-$(CONFIG_BLK_DEV_IDE_EP93XX) += ep93xx-ide.o
