[ppc40x] backport Magicbox CF driver to 2.6.28

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16923 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 359 insertions, 0 deletions

diff --git a/target/linux/ppc40x/patches/100-magicbox-ide-driver.patch b/target/linux/ppc40x/patches/100-magicbox-ide-driver.patch
new file mode 100644
index 0000000000..eca26a9e4a
--- /dev/null
+++ b/target/linux/ppc40x/patches/100-magicbox-ide-driver.patch
@@ -0,0 +1,359 @@
+--- a/drivers/ide/Kconfig
++++ b/drivers/ide/Kconfig
+@@ -712,6 +712,11 @@ config BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ
+        default "128"
+        depends on BLK_DEV_IDE_AU1XXX
+ 
++config BLK_DEV_IDE_MAGICBOX
++	tristate "Magicbox CF card support"
++	depends on MAGICBOXV2 || OPENRB_LIGHT
++	select IDE_XFER_MODE
++
+ config BLK_DEV_IDE_TX4938
+ 	tristate "TX4938 internal IDE support"
+ 	depends on SOC_TX4938
+--- a/drivers/ide/Makefile
++++ b/drivers/ide/Makefile
+@@ -110,6 +110,7 @@ obj-$(CONFIG_BLK_DEV_IDE_RAPIDE)	+= rapi
+ obj-$(CONFIG_BLK_DEV_PALMCHIP_BK3710)	+= palm_bk3710.o
+ 
+ obj-$(CONFIG_BLK_DEV_IDE_AU1XXX)	+= au1xxx-ide.o
++obj-$(CONFIG_BLK_DEV_IDE_MAGICBOX)	+= magicbox_ide.o
+ 
+ obj-$(CONFIG_BLK_DEV_IDE_TX4938)	+= tx4938ide.o
+ obj-$(CONFIG_BLK_DEV_IDE_TX4939)	+= tx4939ide.o
+--- /dev/null
++++ b/drivers/ide/magicbox_ide.c
+@@ -0,0 +1,332 @@
++/*
++ *  IDE driver for the MagicBox 2.0 onboard CompactFlash slot.
++ *
++ *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
++ *
++ *  Based on the original driver by Wojtek Kaniewski <wojtekka@toxygen.net>
++ *
++ *  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/types.h>
++#include <linux/ioport.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/of_platform.h>
++#include <linux/ide.h>
++
++#define DRV_DESC	"IDE driver for Magicbox 2.0 onboard CF slot"
++#define DRV_NAME	"magicbox_cf"
++
++static u8 magicbox_ide_inb(unsigned long port)
++{
++	return (u8) (readw((void __iomem *) port) >> 8) & 0xff;
++}
++
++static void magicbox_ide_outb(u8 value, unsigned long port)
++{
++	writew(value << 8, (void __iomem *) port);
++}
++
++static inline void magicbox_ide_insw(unsigned long port, void *addr, u32 count)
++{
++	u16 *ptr;
++
++	for (ptr = addr; count--; ptr++)
++		*ptr = readw((void __iomem *) port);
++}
++
++static inline void magicbox_ide_insl(unsigned long port, void *addr, u32 count)
++{
++	u32 *ptr;
++
++	for (ptr = addr; count--; ptr++)
++		*ptr = readl((void __iomem *) port);
++}
++
++static inline void magicbox_ide_outsw(unsigned long port, void *addr,
++					u32 count)
++{
++	u16 *ptr;
++
++	for (ptr = addr; count--; ptr++)
++		writew(*ptr, (void __iomem *) port);
++}
++
++static inline void magicbox_ide_outsl(unsigned long port, void *addr,
++					u32 count)
++{
++	u32 *ptr;
++
++	for (ptr = addr; count--; ptr++)
++		writel(*ptr, (void __iomem *) port);
++}
++
++static void magicbox_ide_exec_command(ide_hwif_t *hwif, u8 cmd)
++{
++	magicbox_ide_outb(cmd, hwif->io_ports.command_addr);
++}
++
++static u8 magicbox_ide_read_status(ide_hwif_t *hwif)
++{
++	return magicbox_ide_inb(hwif->io_ports.status_addr);
++}
++
++static u8 magicbox_ide_read_altstatus(ide_hwif_t *hwif)
++{
++	return magicbox_ide_inb(hwif->io_ports.ctl_addr);
++}
++
++static void magicbox_ide_tf_load(ide_drive_t *drive, ide_task_t *task)
++{
++	struct ide_io_ports *io_ports = &drive->hwif->io_ports;
++	struct ide_taskfile *tf = &task->tf;
++	u8 HIHI = (task->tf_flags & IDE_TFLAG_LBA48) ? 0xE0 : 0xEF;
++
++	if (task->tf_flags & IDE_TFLAG_FLAGGED)
++		HIHI = 0xFF;
++
++	if (task->tf_flags & IDE_TFLAG_OUT_DATA)
++		writel((tf->hob_data << 8) | tf->data,
++			(void __iomem *) io_ports->data_addr);
++
++	if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
++		magicbox_ide_outb(tf->hob_feature, io_ports->feature_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
++		magicbox_ide_outb(tf->hob_nsect, io_ports->nsect_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
++		magicbox_ide_outb(tf->hob_lbal, io_ports->lbal_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
++		magicbox_ide_outb(tf->hob_lbam, io_ports->lbam_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
++		magicbox_ide_outb(tf->hob_lbah, io_ports->lbah_addr);
++
++	if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
++		magicbox_ide_outb(tf->feature, io_ports->feature_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
++		magicbox_ide_outb(tf->nsect, io_ports->nsect_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
++		magicbox_ide_outb(tf->lbal, io_ports->lbal_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
++		magicbox_ide_outb(tf->lbam, io_ports->lbam_addr);
++	if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
++		magicbox_ide_outb(tf->lbah, io_ports->lbah_addr);
++
++	if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
++		magicbox_ide_outb((tf->device & HIHI) | drive->select,
++			     io_ports->device_addr);
++}
++
++static void magicbox_ide_tf_read(ide_drive_t *drive, ide_task_t *task)
++{
++	struct ide_io_ports *io_ports = &drive->hwif->io_ports;
++	struct ide_taskfile *tf = &task->tf;
++
++	if (task->tf_flags & IDE_TFLAG_IN_DATA) {
++		u16 data = (u16) readl((void __iomem *) io_ports->data_addr);
++
++		tf->data = data & 0xff;
++		tf->hob_data = (data >> 8) & 0xff;
++	}
++
++	/* be sure we're looking at the low order bits */
++	magicbox_ide_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
++
++	if (task->tf_flags & IDE_TFLAG_IN_NSECT)
++		tf->nsect  = magicbox_ide_inb(io_ports->nsect_addr);
++	if (task->tf_flags & IDE_TFLAG_IN_LBAL)
++		tf->lbal   = magicbox_ide_inb(io_ports->lbal_addr);
++	if (task->tf_flags & IDE_TFLAG_IN_LBAM)
++		tf->lbam   = magicbox_ide_inb(io_ports->lbam_addr);
++	if (task->tf_flags & IDE_TFLAG_IN_LBAH)
++		tf->lbah   = magicbox_ide_inb(io_ports->lbah_addr);
++	if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
++		tf->device = magicbox_ide_inb(io_ports->device_addr);
++
++	if (task->tf_flags & IDE_TFLAG_LBA48) {
++		magicbox_ide_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
++
++		if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
++			tf->hob_feature = magicbox_ide_inb(io_ports->feature_addr);
++		if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
++			tf->hob_nsect   = magicbox_ide_inb(io_ports->nsect_addr);
++		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
++			tf->hob_lbal    = magicbox_ide_inb(io_ports->lbal_addr);
++		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
++			tf->hob_lbam    = magicbox_ide_inb(io_ports->lbam_addr);
++		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
++			tf->hob_lbah    = magicbox_ide_inb(io_ports->lbah_addr);
++	}
++}
++
++static void magicbox_ide_input_data(ide_drive_t *drive, struct request *rq,
++			   void *buf, unsigned int len)
++{
++	unsigned long port = drive->hwif->io_ports.data_addr;
++
++	len++;
++
++	if (drive->io_32bit) {
++		magicbox_ide_insl(port, buf, len / 4);
++
++		if ((len & 3) >= 2)
++			magicbox_ide_insw(port, (u8 *)buf + (len & ~3), 1);
++	} else
++		magicbox_ide_insw(port, buf, len / 2);
++}
++
++static void magicbox_ide_output_data(ide_drive_t *drive,  struct request *rq,
++			    void *buf, unsigned int len)
++{
++	unsigned long port = drive->hwif->io_ports.data_addr;
++
++	len++;
++
++	if (drive->io_32bit) {
++		magicbox_ide_outsl(port, buf, len / 4);
++
++		if ((len & 3) >= 2)
++			magicbox_ide_outsw(port, (u8 *)buf + (len & ~3), 1);
++	} else
++		magicbox_ide_outsw(port, buf, len / 2);
++}
++
++static void magicbox_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
++{
++}
++
++static u8 magicbox_ide_cable_detect(ide_hwif_t *hwif)
++{
++	return ATA_CBL_PATA40;
++}
++
++static const struct ide_tp_ops magicbox_ide_tp_ops = {
++	.exec_command	= magicbox_ide_exec_command,
++	.read_status	= magicbox_ide_read_status,
++	.read_altstatus	= magicbox_ide_read_altstatus,
++
++	.set_irq	= ide_set_irq,
++	.tf_load	= magicbox_ide_tf_load,
++	.tf_read	= magicbox_ide_tf_read,
++
++	.input_data	= magicbox_ide_input_data,
++	.output_data	= magicbox_ide_output_data,
++};
++
++static const struct ide_port_ops magicbox_ide_port_ops = {
++	.set_pio_mode	= magicbox_ide_set_pio_mode,
++	.cable_detect	= magicbox_ide_cable_detect,
++};
++
++static const struct ide_port_info magicbox_ide_port_info = {
++	.name		= DRV_NAME,
++	.chipset	= ide_generic,
++	.tp_ops		= &magicbox_ide_tp_ops,
++	.port_ops	= &magicbox_ide_port_ops,
++	.host_flags	= IDE_HFLAG_SINGLE |
++			  IDE_HFLAG_NO_DMA |
++			  IDE_HFLAG_MMIO |
++			  IDE_HFLAG_UNMASK_IRQS,
++	.pio_mask	= ATA_PIO4,
++};
++
++static inline void magicbox_ide_setup_hw(hw_regs_t *hw, u16 __iomem *base,
++					 u16 __iomem *ctrl, int irq)
++{
++	unsigned long port = (unsigned long) base;
++	int i;
++
++	memset(hw, 0, sizeof(*hw));
++	for (i = 0; i <= 7; i++)
++		hw->io_ports_array[i] = port + i * 2;
++
++	/*
++	 * the IDE control register is at ATA address 6,
++	 * with CS1 active instead of CS0
++	 */
++	hw->io_ports.ctl_addr = (unsigned long)ctrl + (6 * 2);
++
++	hw->irq = irq;
++	hw->chipset = ide_generic;
++	hw->ack_intr = NULL;
++}
++
++static int __devinit magicbox_ide_of_probe(struct of_device *op,
++					   const struct of_device_id *match)
++{
++	hw_regs_t hw;
++	hw_regs_t *hws[] = { &hw, NULL, NULL, NULL };
++	struct ide_host *host;
++	u16 __iomem *base;
++	u16 __iomem *ctrl;
++	int irq;
++	int ret = 0;
++
++	irq = irq_of_parse_and_map(op->node, 0);
++	if (irq < 0) {
++		dev_err(&op->dev, "invalid irq\n");
++		ret = -EINVAL;
++		goto err_exit;
++	}
++
++	base = of_iomap(op->node, 0);
++	if (base == NULL) {
++		ret = -ENOMEM;
++		goto err_exit;
++	}
++
++	ctrl = of_iomap(op->node, 1);
++	if (ctrl == NULL) {
++		ret = -ENOMEM;
++		goto err_unmap_base;
++	}
++
++	magicbox_ide_setup_hw(&hw, base, ctrl, irq);
++
++	hw.dev = &op->dev;
++
++	ret = ide_host_add(&magicbox_ide_port_info, hws, &host);
++	if (ret)
++		goto err_unmap_ctrl;
++
++	dev_set_drvdata(&op->dev, host);
++
++	return 0;
++
++ err_unmap_ctrl:
++	iounmap(ctrl);
++ err_unmap_base:
++	iounmap(base);
++ err_exit:
++	return ret;
++}
++
++static struct of_device_id magicbox_ide_of_match[] = {
++	{ .compatible = "magicbox-cf", },
++	{},
++};
++
++static struct of_platform_driver magicbox_ide_of_platform_driver = {
++	.owner		= THIS_MODULE,
++	.name		= DRV_NAME,
++	.match_table	= magicbox_ide_of_match,
++	.probe		= magicbox_ide_of_probe,
++	.driver		= {
++		.name	= DRV_NAME,
++		.owner	= THIS_MODULE,
++	},
++};
++
++static int __init magicbox_ide_init(void)
++{
++	return of_register_platform_driver(&magicbox_ide_of_platform_driver);
++}
++
++module_init(magicbox_ide_init);
++
++MODULE_DESCRIPTION(DRV_DESC);
++MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
++MODULE_LICENSE("GPL v2");
++MODULE_DEVICE_TABLE(of, magicbox_ide_of_match);