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|
---
drivers/scsi/Kconfig | 11 +-
drivers/scsi/Makefile | 1
drivers/scsi/libata-core.c | 4
drivers/scsi/pata_ixp4xx.c | 242 +++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 255 insertions(+), 3 deletions(-)
--- linux-ixp4xx.orig/drivers/scsi/Kconfig 2006-02-24 18:13:55.000000000 +0100
+++ linux-ixp4xx/drivers/scsi/Kconfig 2006-02-24 18:50:19.000000000 +0100
@@ -903,11 +903,20 @@ config SCSI_PATA_WINBOND
tristate "Winbond SL82C105 PATA support"
depends on SCSI_SATA && PCI
help
- This option enables support for SL82C105 PATA devices found in the
+ This option enables support for SL82C105 PATAll devices found in the
Netwinder and some other systems
If unsure, say N.
+config SCSI_PATA_IXP4XX
+ tristate "IXP4XX Compact FLash support"
+ depends on SCSI_SATA && PCI
+ help
+ This option enables support for a Compact Flash connected on
+ the ixp4xx expansion bus.
+
+ If unsure, say N.
+
config SCSI_BUSLOGIC
tristate "BusLogic SCSI support"
--- linux-ixp4xx.orig/drivers/scsi/Makefile 2006-02-24 18:13:55.000000000 +0100
+++ linux-ixp4xx/drivers/scsi/Makefile 2006-02-24 18:16:46.000000000 +0100
@@ -174,6 +174,7 @@ obj-$(CONFIG_SCSI_PATA_VIA) += libata.o
obj-$(CONFIG_SCSI_PATA_WINBOND) += libata.o pata_sl82c105.o
obj-$(CONFIG_SCSI_ATA_GENERIC) += libata.o ata_generic.o
obj-$(CONFIG_SCSI_PATA_LEGACY) += libata.o pata_legacy.o
+obj-$(CONFIG_SCSI_PATA_IXP4XX) += libata.o pata_ixp4xx.o
obj-$(CONFIG_ARM) += arm/
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-ixp4xx/drivers/scsi/pata_ixp4xx.c 2006-02-24 18:43:02.000000000 +0100
@@ -0,0 +1,242 @@
+/*
+ * pata-ixp4xx.c - Legacy port PATA/SATA controller driver.
+ * Copyright (c) 2006 Tower Technologies
+ *
+ * An ATA driver to handle a Compact Flash connected
+ * to the ixp4xx expansion bus.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/libata.h>
+#include <scsi/scsi_host.h>
+
+#define DRV_NAME "ixp4xx"
+#define DRV_VERSION "0.0.2"
+
+/* XXX remove when converting to platform driver */
+#define IXP4XX_IDE_BASE IXP4XX_EXP_BUS_BASE(1)
+#define IXP4XX_IDE_IRQ IRQ_IXP4XX_GPIO12
+#define IXP4XX_IDE_CONTROL 0x1e
+#define IXP4XX_IDE_INT 12
+#define IXP4XX_IDE_CS1_BITS 0xbfff0043
+#define IXP4XX_IDE_PIO_MASK 0x1f
+
+#ifdef __ARMEB__
+#define ixp4xx_writew(data,addr) writew(data,addr)
+#define ixp4xx_readw(addr) readw(addr)
+#else
+#define ixp4xx_writew(data,addr) writew(le16_to_cpu(data),addr)
+#define ixp4xx_readw(addr) cpu_to_le16(readw(addr))
+#endif
+
+static struct ata_host_set *ixp4xx_host;
+
+static unsigned int ixp4xx_mode_filter(const struct ata_port *ap,
+ struct ata_device *adev, unsigned int mask, int shift)
+{
+ if (shift != ATA_SHIFT_PIO)
+ return 0;
+ return mask;
+}
+
+static void ixp4xx_set_mode(struct ata_port *ap)
+{
+ int i;
+
+ for (i = 0; i < ATA_MAX_DEVICES; i++) {
+ struct ata_device *dev = &ap->device[i];
+ if (ata_dev_present(dev)) {
+ dev->pio_mode = XFER_PIO_0;
+ dev->xfer_mode = XFER_PIO_0;
+ dev->xfer_shift = ATA_SHIFT_PIO;
+ dev->flags |= ATA_DFLAG_PIO;
+ }
+ }
+}
+
+static void ixp4xx_phy_reset(struct ata_port *ap)
+{
+ ap->cbl = ATA_CBL_PATA40;
+ ata_port_probe(ap);
+ ata_bus_reset(ap);
+}
+
+void ixp4xx_mmio_data_xfer(struct ata_port *ap, struct ata_device *adev,
+ unsigned char *buf, unsigned int buflen, int write_data)
+{
+ unsigned int i;
+ unsigned int words = buflen >> 1;
+ u16 *buf16 = (u16 *) buf;
+ void __iomem *mmio = (void __iomem *)ap->ioaddr.data_addr;
+
+ /* set the expansion bus in 16bit mode and restore
+ * 8 bit mode after the transaction.
+ */
+ *IXP4XX_EXP_CS1 &= ~(0x00000001);
+
+ /* Transfer multiple of 2 bytes */
+ if (write_data) {
+ for (i = 0; i < words; i++)
+ writew(buf16[i], mmio);
+ } else {
+ for (i = 0; i < words; i++)
+ buf16[i] = readw(mmio);
+ }
+
+ /* Transfer trailing 1 byte, if any. */
+ if (unlikely(buflen & 0x01)) {
+ u16 align_buf[1] = { 0 };
+ unsigned char *trailing_buf = buf + buflen - 1;
+
+ if (write_data) {
+ memcpy(align_buf, trailing_buf, 1);
+ writew(le16_to_cpu(align_buf[0]), mmio);
+ } else {
+ align_buf[0] = cpu_to_le16(readw(mmio));
+ memcpy(trailing_buf, align_buf, 1);
+ }
+ }
+
+ *IXP4XX_EXP_CS1 |= 0x00000001;
+}
+
+void ixp4xx_host_stop(struct ata_host_set *host_set)
+{
+ ata_host_stop(host_set);
+ release_region(IXP4XX_IDE_BASE, 0x1000);
+}
+
+static struct scsi_host_template ixp4xx_sht = {
+ .module = THIS_MODULE,
+ .name = DRV_NAME,
+ .ioctl = ata_scsi_ioctl,
+ .queuecommand = ata_scsi_queuecmd,
+ .eh_strategy_handler = ata_scsi_error,
+ .can_queue = ATA_DEF_QUEUE,
+ .this_id = ATA_SHT_THIS_ID,
+ .sg_tablesize = LIBATA_MAX_PRD,
+ .max_sectors = ATA_MAX_SECTORS,
+ .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
+ .emulated = ATA_SHT_EMULATED,
+ .use_clustering = ATA_SHT_USE_CLUSTERING,
+ .proc_name = DRV_NAME,
+ .dma_boundary = ATA_DMA_BOUNDARY,
+ .slave_configure = ata_scsi_slave_config,
+ .bios_param = ata_std_bios_param,
+// .ordered_flush = 1,
+};
+
+static struct ata_port_operations ixp4xx_port_ops = {
+ .set_mode = ixp4xx_set_mode,
+ .mode_filter = ixp4xx_mode_filter,
+
+ .port_disable = ata_port_disable,
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .check_status = ata_check_status,
+ .exec_command = ata_exec_command,
+ .dev_select = ata_std_dev_select,
+
+ .qc_prep = ata_qc_prep,
+ .qc_issue = ata_qc_issue_prot,
+ .eng_timeout = ata_eng_timeout,
+ .data_xfer = ixp4xx_mmio_data_xfer,
+
+ .irq_handler = ata_interrupt,
+ .irq_clear = ata_bmdma_irq_clear,
+
+ .port_start = ata_port_start,
+ .port_stop = ata_port_stop,
+ .host_stop = ixp4xx_host_stop,
+
+ .phy_reset = ixp4xx_phy_reset,
+};
+
+/* adjust the addresses to handle the address swizzling of the
+ * ixp4xx in little endian mode.
+ */
+#ifndef __ARMEB__
+void ixp4xx_fix_le_ports(struct ata_ioports *ioaddr)
+{
+ ioaddr->data_addr ^= 0x02;
+ ioaddr->cmd_addr ^= 0x03;
+ ioaddr->altstatus_addr ^= 0x03;
+ ioaddr->ctl_addr ^= 0x03;
+ ioaddr->error_addr ^= 0x03;
+ ioaddr->feature_addr ^= 0x03;
+ ioaddr->nsect_addr ^= 0x03;
+ ioaddr->lbal_addr ^= 0x03;
+ ioaddr->lbam_addr ^= 0x03;
+ ioaddr->lbah_addr ^= 0x03;
+ ioaddr->device_addr ^= 0x03;
+ ioaddr->status_addr ^= 0x03;
+ ioaddr->command_addr ^= 0x03;
+}
+#endif
+
+static __init int ixp4xx_init_one(unsigned long base, unsigned int irq)
+{
+ int ret;
+ struct ata_probe_ent ae;
+
+ memset(&ae, 0, sizeof(struct ata_probe_ent));
+ INIT_LIST_HEAD(&ae.node);
+
+ ae.mmio_base = ioremap(base, 0x1000);
+ if (ae.mmio_base == NULL)
+ return -ENOMEM;
+
+ if (request_region(base, 0x1000, "pata_ixp4xx") == NULL)
+ return -EBUSY;
+
+ ae.dev = NULL;
+ ae.port_ops = &ixp4xx_port_ops;
+ ae.sht = &ixp4xx_sht;
+ ae.n_ports = 1;
+ ae.pio_mask = IXP4XX_IDE_PIO_MASK;
+ ae.irq = irq;
+ ae.irq_flags = 0;
+ ae.host_flags = ATA_FLAG_IRQ_MASK | ATA_FLAG_MMIO;
+
+ ae.port[0].cmd_addr = (unsigned long) ae.mmio_base;
+ ae.port[0].altstatus_addr = (unsigned long) ae.mmio_base + IXP4XX_IDE_CONTROL;
+ ae.port[0].ctl_addr = (unsigned long) ae.mmio_base + IXP4XX_IDE_CONTROL;
+ ata_std_ports(&ae.port[0]);
+
+#ifndef __ARMEB__
+ ixp4xx_fix_le_ports(&ae.port[0]);
+#endif
+ ret = ata_device_add(&ae);
+ if (ret == 0)
+ return -ENODEV;
+
+ ixp4xx_host = ae.host_set;
+ return 0;
+}
+
+static __init int ixp4xx_init(void)
+{
+ gpio_line_config(IXP4XX_IDE_INT, IXP4XX_GPIO_IN | IXP4XX_GPIO_STYLE_ACTIVE_HIGH);
+
+ *IXP4XX_EXP_CS1 |= IXP4XX_IDE_CS1_BITS;
+
+ if (ixp4xx_init_one(IXP4XX_IDE_BASE, IXP4XX_IDE_INT) == 0)
+ return 0;
+
+ return -ENODEV;
+}
+
+static __exit void ixp4xx_exit(void)
+{
+ if (ixp4xx_host)
+ ata_host_set_remove(ixp4xx_host);
+}
+
+MODULE_AUTHOR("Alessandro Zummo");
+MODULE_DESCRIPTION("low-level driver for ixp4xx CF/ATA");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(ixp4xx_init);
+module_exit(ixp4xx_exit);
--- linux-ixp4xx.orig/drivers/scsi/libata-core.c 2006-02-24 18:13:55.000000000 +0100
+++ linux-ixp4xx/drivers/scsi/libata-core.c 2006-02-24 18:16:46.000000000 +0100
@@ -2513,8 +2513,8 @@ static void ata_dev_set_xfermode(struct
tf.nsect = dev->xfer_mode;
if (ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0)) {
- printk(KERN_ERR "ata%u: failed to set xfermode, disabled\n",
- ap->id);
+ printk(KERN_ERR "ata%u: failed to set xfermode (0x%02x), disabled\n",
+ ap->id, dev->xfer_mode);
ata_port_disable(ap);
}
|
