OpenWrt – Rev 1
?pathlinks?
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -234,6 +234,16 @@ config PDC_ADMA
If unsure, say N.
+config PATA_MAGICBOX_CF
+ tristate "Magicbox/OpenRB Compact Flash support"
+ depends on MAGICBOX || OPENRB
+ help
+ This option enables support for a Compact Flash conected on
+ the ppc405ep expansion bus. This driver had been written for
+ the Magicbox v2 and OpenRB boards.
+
+ If unsure, say N.
+
config PATA_OCTEON_CF
tristate "OCTEON Boot Bus Compact Flash support"
depends on CAVIUM_OCTEON_SOC
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -91,6 +91,7 @@ obj-$(CONFIG_PATA_AT91) += pata_at91.o
obj-$(CONFIG_PATA_CMD640_PCI) += pata_cmd640.o
obj-$(CONFIG_PATA_ISAPNP) += pata_isapnp.o
obj-$(CONFIG_PATA_IXP4XX_CF) += pata_ixp4xx_cf.o
+obj-$(CONFIG_PATA_MAGICBOX_CF) += pata_magicbox_cf.o
obj-$(CONFIG_PATA_MPIIX) += pata_mpiix.o
obj-$(CONFIG_PATA_NS87410) += pata_ns87410.o
obj-$(CONFIG_PATA_OPTI) += pata_opti.o
--- /dev/null
+++ b/drivers/ata/pata_magicbox_cf.c
@@ -0,0 +1,401 @@
+/*
+ * PATA/CompactFlash driver for the MagicBox v2/OpenRB boards.
+ *
+ * Copyright (C) 2009,2012 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * Based on the IDE 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/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/libata.h>
+#include <linux/irq.h>
+//#include <linux/of.h>
+//#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <scsi/scsi_host.h>
+
+#define DRV_DESC "PATA/CompactFlash driver for Magicbox/OpenRB boards"
+#define DRV_NAME "pata_magicbox_cf"
+#define DRV_VERSION "0.1.0"
+
+#define MAGICBOX_CF_REG_CMD (2 * ATA_REG_CMD)
+#define MAGICBOX_CF_REG_DATA (2 * ATA_REG_DATA)
+#define MAGICBOX_CF_REG_ERR (2 * ATA_REG_ERR)
+#define MAGICBOX_CF_REG_FEATURE (2 * ATA_REG_FEATURE)
+#define MAGICBOX_CF_REG_NSECT (2 * ATA_REG_NSECT)
+#define MAGICBOX_CF_REG_LBAL (2 * ATA_REG_LBAL)
+#define MAGICBOX_CF_REG_LBAM (2 * ATA_REG_LBAM)
+#define MAGICBOX_CF_REG_LBAH (2 * ATA_REG_LBAH)
+#define MAGICBOX_CF_REG_DEVICE (2 * ATA_REG_DEVICE)
+#define MAGICBOX_CF_REG_STATUS (2 * ATA_REG_STATUS)
+#define MAGICBOX_CF_REG_ALTSTATUS (2 * 6)
+#define MAGICBOX_CF_REG_CTL (2 * 6)
+
+#define MAGICBOX_CF_MAXPORTS 1
+
+struct magicbox_cf_info {
+ void __iomem *base;
+ void __iomem *ctrl;
+};
+
+static inline u8 magicbox_cf_inb(void __iomem *port)
+{
+ return (u8) (readw(port) >> 8) & 0xff;
+}
+
+static inline void magicbox_cf_outb(void __iomem *port, u8 value)
+{
+ writew(value << 8, port);
+}
+
+static int magicbox_cf_set_mode(struct ata_link *link,
+ struct ata_device **error)
+{
+ struct ata_device *dev;
+
+ ata_for_each_dev(dev, link, ENABLED) {
+ ata_dev_printk(dev, KERN_INFO, "configured for PIO0\n");
+ dev->pio_mode = XFER_PIO_0;
+ dev->xfer_mode = XFER_PIO_0;
+ dev->xfer_shift = ATA_SHIFT_PIO;
+ dev->flags |= ATA_DFLAG_PIO;
+ }
+
+ return 0;
+}
+
+static void magicbox_cf_exec_command(struct ata_port *ap,
+ const struct ata_taskfile *tf)
+{
+ DPRINTK("ata%u: cmd 0x%X\n", ap->print_id, tf->command);
+
+ magicbox_cf_outb(ap->ioaddr.command_addr, tf->command);
+ ata_sff_pause(ap);
+}
+
+static u8 magicbox_cf_check_status(struct ata_port *ap)
+{
+ u8 status;
+
+ status = magicbox_cf_inb(ap->ioaddr.status_addr);
+
+ DPRINTK("ata%u: status 0x%X, from %p\n", ap->print_id, status,
+ ap->ioaddr.status_addr);
+
+ return status;
+}
+
+static u8 magicbox_cf_check_altstatus(struct ata_port *ap)
+{
+ u8 altstatus;
+
+ altstatus = magicbox_cf_inb(ap->ioaddr.altstatus_addr);
+
+ DPRINTK("ata%u: altstatus 0x%X, from %p\n", ap->print_id,
+ altstatus, ap->ioaddr.altstatus_addr);
+
+ return altstatus;
+}
+
+static void magicbox_cf_dev_select(struct ata_port *ap, unsigned int device)
+{
+ /* Nothing to do. We are supporting one device only. */
+}
+
+static void magicbox_cf_tf_load(struct ata_port *ap,
+ const struct ata_taskfile *tf)
+{
+ struct ata_ioports *ioaddr = &ap->ioaddr;
+ unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
+
+ if (tf->ctl != ap->last_ctl) {
+ magicbox_cf_outb(ioaddr->ctl_addr, tf->ctl);
+ ap->last_ctl = tf->ctl;
+ ata_wait_idle(ap);
+ }
+
+ if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
+ magicbox_cf_outb(ioaddr->feature_addr, tf->hob_feature);
+ magicbox_cf_outb(ioaddr->nsect_addr, tf->hob_nsect);
+ magicbox_cf_outb(ioaddr->lbal_addr, tf->hob_lbal);
+ magicbox_cf_outb(ioaddr->lbam_addr, tf->hob_lbam);
+ magicbox_cf_outb(ioaddr->lbah_addr, tf->hob_lbah);
+ VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
+ tf->hob_feature,
+ tf->hob_nsect,
+ tf->hob_lbal,
+ tf->hob_lbam,
+ tf->hob_lbah);
+ }
+
+ if (is_addr) {
+ magicbox_cf_outb(ioaddr->feature_addr, tf->feature);
+ magicbox_cf_outb(ioaddr->nsect_addr, tf->nsect);
+ magicbox_cf_outb(ioaddr->lbal_addr, tf->lbal);
+ magicbox_cf_outb(ioaddr->lbam_addr, tf->lbam);
+ magicbox_cf_outb(ioaddr->lbah_addr, tf->lbah);
+ VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
+ tf->feature,
+ tf->nsect,
+ tf->lbal,
+ tf->lbam,
+ tf->lbah);
+ }
+
+ if (tf->flags & ATA_TFLAG_DEVICE) {
+ magicbox_cf_outb(ioaddr->device_addr, tf->device);
+ VPRINTK("device 0x%X\n", tf->device);
+ }
+
+ ata_wait_idle(ap);
+}
+
+static void magicbox_cf_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
+{
+ struct ata_ioports *ioaddr = &ap->ioaddr;
+
+ tf->command = magicbox_cf_inb(ap->ioaddr.status_addr);
+ tf->feature = magicbox_cf_inb(ioaddr->error_addr);
+ tf->nsect = magicbox_cf_inb(ioaddr->nsect_addr);
+ tf->lbal = magicbox_cf_inb(ioaddr->lbal_addr);
+ tf->lbam = magicbox_cf_inb(ioaddr->lbam_addr);
+ tf->lbah = magicbox_cf_inb(ioaddr->lbah_addr);
+ tf->device = magicbox_cf_inb(ioaddr->device_addr);
+ VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
+ tf->feature,
+ tf->nsect,
+ tf->lbal,
+ tf->lbam,
+ tf->lbah);
+
+ if (tf->flags & ATA_TFLAG_LBA48) {
+ magicbox_cf_outb(ioaddr->ctl_addr, tf->ctl | ATA_HOB);
+ tf->hob_feature = magicbox_cf_inb(ioaddr->error_addr);
+ tf->hob_nsect = magicbox_cf_inb(ioaddr->nsect_addr);
+ tf->hob_lbal = magicbox_cf_inb(ioaddr->lbal_addr);
+ tf->hob_lbam = magicbox_cf_inb(ioaddr->lbam_addr);
+ tf->hob_lbah = magicbox_cf_inb(ioaddr->lbah_addr);
+ magicbox_cf_outb(ioaddr->ctl_addr, tf->ctl);
+ ap->last_ctl = tf->ctl;
+ VPRINTK("hob: feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
+ tf->feature,
+ tf->nsect,
+ tf->lbal,
+ tf->lbam,
+ tf->lbah);
+ }
+}
+
+static unsigned int magicbox_cf_data_xfer(struct ata_device *dev,
+ unsigned char *buf,
+ unsigned int buflen, int rw)
+{
+ struct ata_port *ap = dev->link->ap;
+ unsigned int words = buflen >> 1;
+ unsigned int i;
+ u16 *buf16 = (u16 *) buf;
+ void __iomem *mmio = ap->ioaddr.data_addr;
+
+ /* Transfer multiple of 2 bytes */
+ if (rw == READ)
+ for (i = 0; i < words; i++)
+ buf16[i] = readw(mmio);
+ else
+ for (i = 0; i < words; i++)
+ writew(buf16[i], mmio);
+
+ /* Transfer trailing 1 byte, if any. */
+ if (unlikely(buflen & 0x01)) {
+ u16 align_buf[1] = { 0 };
+ unsigned char *trailing_buf = buf + buflen - 1;
+
+ if (rw == READ) {
+ align_buf[0] = readw(mmio);
+ memcpy(trailing_buf, align_buf, 1);
+ } else {
+ memcpy(align_buf, trailing_buf, 1);
+ writew(align_buf[0], mmio);
+ }
+ words++;
+ }
+
+ return words << 1;
+}
+
+static void magicbox_cf_irq_on(struct ata_port *ap)
+{
+ /* Nothing to do. */
+}
+
+static void magicbox_cf_irq_clear(struct ata_port *ap)
+{
+ /* Nothing to do. */
+}
+
+static struct ata_port_operations magicbox_cf_port_ops = {
+ .inherits = &ata_sff_port_ops,
+
+ .cable_detect = ata_cable_40wire,
+ .set_mode = magicbox_cf_set_mode,
+
+ .sff_exec_command = magicbox_cf_exec_command,
+ .sff_check_status = magicbox_cf_check_status,
+ .sff_check_altstatus = magicbox_cf_check_altstatus,
+ .sff_dev_select = magicbox_cf_dev_select,
+ .sff_tf_load = magicbox_cf_tf_load,
+ .sff_tf_read = magicbox_cf_tf_read,
+ .sff_data_xfer = magicbox_cf_data_xfer,
+
+ .sff_irq_on = magicbox_cf_irq_on,
+ .sff_irq_clear = magicbox_cf_irq_clear,
+
+ .port_start = ATA_OP_NULL,
+};
+
+static struct scsi_host_template magicbox_cf_sht = {
+ ATA_PIO_SHT(DRV_NAME),
+};
+
+static inline void magicbox_cf_setup_port(struct ata_host *host)
+{
+ struct magicbox_cf_info *info = host->private_data;
+ struct ata_port *ap;
+
+ ap = host->ports[0];
+
+ ap->ops = &magicbox_cf_port_ops;
+ ap->pio_mask = ATA_PIO4;
+ ap->flags |= ATA_FLAG_NO_ATAPI;
+
+ ap->ioaddr.cmd_addr = info->base + MAGICBOX_CF_REG_CMD;
+ ap->ioaddr.data_addr = info->base + MAGICBOX_CF_REG_DATA;
+ ap->ioaddr.error_addr = info->base + MAGICBOX_CF_REG_ERR;
+ ap->ioaddr.feature_addr = info->base + MAGICBOX_CF_REG_FEATURE;
+ ap->ioaddr.nsect_addr = info->base + MAGICBOX_CF_REG_NSECT;
+ ap->ioaddr.lbal_addr = info->base + MAGICBOX_CF_REG_LBAL;
+ ap->ioaddr.lbam_addr = info->base + MAGICBOX_CF_REG_LBAM;
+ ap->ioaddr.lbah_addr = info->base + MAGICBOX_CF_REG_LBAH;
+ ap->ioaddr.device_addr = info->base + MAGICBOX_CF_REG_DEVICE;
+ ap->ioaddr.status_addr = info->base + MAGICBOX_CF_REG_STATUS;
+ ap->ioaddr.command_addr = info->base + MAGICBOX_CF_REG_CMD;
+
+ ap->ioaddr.altstatus_addr = info->ctrl + MAGICBOX_CF_REG_ALTSTATUS;
+ ap->ioaddr.ctl_addr = info->ctrl + MAGICBOX_CF_REG_CTL;
+
+ ata_port_desc(ap, "cmd 0x%p ctl 0x%p", ap->ioaddr.cmd_addr,
+ ap->ioaddr.ctl_addr);
+}
+
+static int magicbox_cf_of_probe(struct platform_device *op)
+{
+ struct magicbox_cf_info *info;
+ struct ata_host *host;
+ int irq;
+ int ret = 0;
+
+ info = kzalloc(sizeof(struct magicbox_cf_info), GFP_KERNEL);
+ if (info == NULL) {
+ ret = -ENOMEM;
+ goto err_exit;
+ }
+
+ irq = irq_of_parse_and_map(op->dev.of_node, 0);
+ if (irq < 0) {
+ dev_err(&op->dev, "invalid irq\n");
+ ret = -EINVAL;
+ goto err_free_info;
+ }
+
+ info->base = of_iomap(op->dev.of_node, 0);
+ if (info->base == NULL) {
+ ret = -ENOMEM;
+ goto err_free_info;
+ }
+
+ info->ctrl = of_iomap(op->dev.of_node, 1);
+ if (info->ctrl == NULL) {
+ ret = -ENOMEM;
+ goto err_unmap_base;
+ }
+
+ host = ata_host_alloc(&op->dev, MAGICBOX_CF_MAXPORTS);
+ if (host == NULL) {
+ ret = -ENOMEM;
+ goto err_unmap_ctrl;
+ }
+
+ host->private_data = info;
+ magicbox_cf_setup_port(host);
+
+ ret = ata_host_activate(host, irq, ata_sff_interrupt,
+ IRQF_TRIGGER_RISING, &magicbox_cf_sht);
+ if (ret)
+ goto err_unmap_ctrl;
+
+ dev_set_drvdata(&op->dev, host);
+ return 0;
+
+ err_unmap_ctrl:
+ iounmap(info->ctrl);
+ err_unmap_base:
+ iounmap(info->base);
+ err_free_info:
+ kfree(info);
+ err_exit:
+ return ret;
+}
+
+static int magicbox_cf_of_remove(struct platform_device *op)
+{
+ struct ata_host *host = dev_get_drvdata(&op->dev);
+ struct magicbox_cf_info *info = host->private_data;
+
+ ata_host_detach(host);
+ iounmap(info->ctrl);
+ iounmap(info->base);
+ kfree(info);
+
+ return 0;
+}
+
+static struct of_device_id magicbox_cf_of_match[] = {
+ { .compatible = "pata-magicbox-cf", },
+ {},
+};
+
+static struct platform_driver magicbox_cf_of_platform_driver = {
+ .probe = magicbox_cf_of_probe,
+ .remove = magicbox_cf_of_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = magicbox_cf_of_match,
+ },
+};
+
+static int __init magicbox_cf_init(void)
+{
+ return platform_driver_register(&magicbox_cf_of_platform_driver);
+}
+
+static void __exit magicbox_cf_exit(void)
+{
+ platform_driver_unregister(&magicbox_cf_of_platform_driver);
+}
+
+module_init(magicbox_cf_init);
+module_exit(magicbox_cf_exit);
+
+MODULE_DESCRIPTION(DRV_DESC);
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(of, magicbox_cf_of_match);
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