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[ppc40x] backport Magicbox CF driver to 2.6.28

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16923 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2009-07-19 17:46:07 +00:00
parent 99683d6295
commit 1c9dab3413
6 changed files with 499 additions and 0 deletions
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359
target/linux/ppc40x/patches/100-magicbox-ide-driver.patch Normal file
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@ -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);

12
target/linux/ppc40x/patches/101-powerpc-add-EBC_BXCR_BW-defines.patch Normal file
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@ -0,0 +1,12 @@
--- a/arch/powerpc/boot/dcr.h
+++ b/arch/powerpc/boot/dcr.h
@@ -57,6 +57,9 @@ static const unsigned long sdram_bxcr[]
#define EBC_BXCR_BU_WO 0x00010000
#define EBC_BXCR_BU_RW 0x00018000
#define EBC_BXCR_BW 0x00006000
+#define EBC_BXCR_BW_8 0x00000000
+#define EBC_BXCR_BW_16 0x00002000
+#define EBC_BXCR_BW_32 0x00006000
#define EBC_B0AP 0x10
#define EBC_B1AP 0x11
#define EBC_B2AP 0x12

39
target/linux/ppc40x/patches/102-openrb-light-cf-card-fixup.patch Normal file
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@ -0,0 +1,39 @@
--- a/arch/powerpc/boot/cuboot-openrb-light.c
+++ b/arch/powerpc/boot/cuboot-openrb-light.c
@@ -22,8 +22,36 @@
static bd_t bd;
+static void fixup_cf_card(void)
+{
+#define DCRN_CPC0_PCI_BASE 0xf9
+#define CF_CS0_BASE 0xff100000
+#define CF_CS1_BASE 0xff200000
+
+ /* Turn on PerWE instead of PCIsomething */
+ mtdcr(DCRN_CPC0_PCI_BASE,
+ mfdcr(DCRN_CPC0_PCI_BASE) | (0x80000000L >> 27));
+
+ /* PerCS1 (CF's CS0): base 0xff100000, 16-bit, rw */
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B1CR);
+ mtdcr(DCRN_EBC0_CFGDATA, CF_CS0_BASE | EBC_BXCR_BU_RW | EBC_BXCR_BW_16);
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B1AP);
+ mtdcr(DCRN_EBC0_CFGDATA, 0x080bd800);
+
+ /* PerCS2 (CF's CS1): base 0xff200000, 16-bit, rw */
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B2CR);
+ mtdcr(DCRN_EBC0_CFGDATA, CF_CS1_BASE | EBC_BXCR_BU_RW | EBC_BXCR_BW_16);
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B2AP);
+ mtdcr(DCRN_EBC0_CFGDATA, 0x080bd800);
+
+#undef DCRN_CPC0_PCI_BASE
+#undef CF_CS0_BASE
+#undef CF_CS1_BASE
+}
+
static void openrb_light_fixups(void)
{
+ fixup_cf_card();
ibm405ep_fixup_clocks(33333000);
ibm4xx_sdram_fixup_memsize();
dt_fixup_mac_addresses(&bd.bi_enetaddr, &bd.bi_enet1addr);

17
target/linux/ppc40x/patches/103-openrb-light-add-cf-card-to-dts.patch Normal file
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@ -0,0 +1,17 @@
--- a/arch/powerpc/boot/dts/openrb-light.dts
+++ b/arch/powerpc/boot/dts/openrb-light.dts
@@ -177,6 +177,14 @@
*/
clock-frequency = <0>; /* Filled in by zImage */
+ cf_card@ff100000 {
+ compatible = "magicbox-cf";
+ reg = <0x00000000 0xff100000 0x00001000
+ 0x00000000 0xff200000 0x00001000>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x19 0x1 /* IRQ_TYPE_EDGE_RISING */ >;
+ };
+
nor_flash@ff800000 {
compatible = "cfi-flash";
bank-width = <2>;

47
target/linux/ppc40x/patches/104-magicboxv2-cf-card-fixup.patch Normal file
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@ -0,0 +1,47 @@
--- a/arch/powerpc/boot/cuboot-magicboxv2.c
+++ b/arch/powerpc/boot/cuboot-magicboxv2.c
@@ -2,6 +2,7 @@
* Old U-boot compatibility for Magicbox v2
*
* Author: Imre Kaloz <kaloz@openwrt.org>
+ * Gabor Juhos <juhosg@openwrt.org>
*
* 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
@@ -22,8 +23,36 @@
static bd_t bd;
+static void fixup_cf_card(void)
+{
+#define DCRN_CPC0_PCI_BASE 0xf9
+#define CF_CS0_BASE 0xff100000
+#define CF_CS1_BASE 0xff200000
+
+ /* Turn on PerWE instead of PCIsomething */
+ mtdcr(DCRN_CPC0_PCI_BASE,
+ mfdcr(DCRN_CPC0_PCI_BASE) | (0x80000000L >> 27));
+
+ /* PerCS1 (CF's CS0): base 0xff100000, 16-bit, rw */
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B1CR);
+ mtdcr(DCRN_EBC0_CFGDATA, CF_CS0_BASE | EBC_BXCR_BU_RW | EBC_BXCR_BW_16);
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B1AP);
+ mtdcr(DCRN_EBC0_CFGDATA, 0x080bd800);
+
+ /* PerCS2 (CF's CS1): base 0xff200000, 16-bit, rw */
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B2CR);
+ mtdcr(DCRN_EBC0_CFGDATA, CF_CS1_BASE | EBC_BXCR_BU_RW | EBC_BXCR_BW_16);
+ mtdcr(DCRN_EBC0_CFGADDR, EBC_B2AP);
+ mtdcr(DCRN_EBC0_CFGDATA, 0x080bd800);
+
+#undef DCRN_CPC0_PCI_BASE
+#undef CF_CS0_BASE
+#undef CF_CS1_BASE
+}
+
static void magicboxv2_fixups(void)
{
+ fixup_cf_card();
ibm405ep_fixup_clocks(25000000);
ibm4xx_sdram_fixup_memsize();
dt_fixup_mac_addresses(&bd.bi_enetaddr, &bd.bi_enet1addr);

25
target/linux/ppc40x/patches/105-magicboxv2-add-cf-card-to-dts.patch Normal file
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@ -0,0 +1,25 @@
--- a/arch/powerpc/boot/dts/magicboxv2.dts
+++ b/arch/powerpc/boot/dts/magicboxv2.dts
@@ -2,6 +2,7 @@
* Device Tree Source for Magicbox v2
*
* Copyright 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright 2009 Gabor Juhos <juhosg@openwrt.org>
*
* Based on walnut.dts
*
@@ -183,6 +184,14 @@
*/
clock-frequency = <0>; /* Filled in by zImage */
+ cf_card@ff100000 {
+ compatible = "magicbox-cf";
+ reg = <0x00000000 0xff100000 0x00001000
+ 0x00000000 0xff200000 0x00001000>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x19 0x1 /* IRQ_TYPE_EDGE_RISING */ >;
+ };
+
nor_flash@ffc00000 {
compatible = "cfi-flash";
bank-width = <2>;