openwrtv3/target/linux/ppc40x/patches-2.6.30/100-magicbox-ide-driver.patch
2009-07-19 09:11:59 +00:00

323 lines
8.1 KiB
Diff

--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -717,6 +717,11 @@ config BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
depends on SOC_AU1200 && BLK_DEV_IDE_AU1XXX
endchoice
+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
@@ -113,6 +113,7 @@ 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 +1,296 @@
+/*
+ * 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>
+
+#include <asm/dcr-native.h>
+
+#define DRV_DESC "IDE driver for Magicbox 2.0 onboard CF slot"
+#define DRV_NAME "magicbox_cf"
+
+static inline u8 magicbox_ide_inb(unsigned long port)
+{
+ return (u8) (readw((void __iomem *) port) >> 8) & 0xff;
+}
+
+static inline 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_write_devctl(ide_hwif_t *hwif, u8 ctl)
+{
+ magicbox_ide_outb(ctl, hwif->io_ports.ctl_addr);
+}
+
+static void magicbox_ide_tf_load(ide_drive_t *drive, struct ide_taskfile *tf,
+ u8 valid)
+{
+ struct ide_io_ports *io_ports = &drive->hwif->io_ports;
+
+ if (valid & IDE_VALID_FEATURE)
+ magicbox_ide_outb(tf->feature, io_ports->feature_addr);
+ if (valid & IDE_VALID_NSECT)
+ magicbox_ide_outb(tf->nsect, io_ports->nsect_addr);
+ if (valid & IDE_VALID_LBAL)
+ magicbox_ide_outb(tf->lbal, io_ports->lbal_addr);
+ if (valid & IDE_VALID_LBAM)
+ magicbox_ide_outb(tf->lbam, io_ports->lbam_addr);
+ if (valid & IDE_VALID_LBAH)
+ magicbox_ide_outb(tf->lbah, io_ports->lbah_addr);
+
+ if (valid & IDE_VALID_DEVICE)
+ magicbox_ide_outb(tf->device, io_ports->device_addr);
+}
+
+static void magicbox_ide_tf_read(ide_drive_t *drive, struct ide_taskfile *tf,
+ u8 valid)
+{
+ struct ide_io_ports *io_ports = &drive->hwif->io_ports;
+
+ if (valid & IDE_VALID_NSECT)
+ tf->nsect = magicbox_ide_inb(io_ports->nsect_addr);
+ if (valid & IDE_VALID_LBAL)
+ tf->lbal = magicbox_ide_inb(io_ports->lbal_addr);
+ if (valid & IDE_VALID_LBAM)
+ tf->lbam = magicbox_ide_inb(io_ports->lbam_addr);
+ if (valid & IDE_VALID_LBAH)
+ tf->lbah = magicbox_ide_inb(io_ports->lbah_addr);
+ if (valid & IDE_VALID_DEVICE)
+ tf->device = magicbox_ide_inb(io_ports->device_addr);
+}
+
+static void magicbox_ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
+ 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 ide_cmd *cmd,
+ 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,
+ .write_devctl = magicbox_ide_write_devctl,
+
+ .dev_select = ide_dev_select,
+ .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);
+}
+
+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;
+ hw.irq = irq;
+ hw.chipset = ide_generic;
+ hw.ack_intr = NULL;
+
+ 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);