1 files changed, 156 insertions, 0 deletions

diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c
new file mode 100644
index 000000000000..73948c8b7270
--- /dev/null
+++ b/drivers/ata/pata_isapnp.c
@@ -0,0 +1,156 @@
+
+/*
+ *   pata-isapnp.c - ISA PnP PATA controller driver.
+ *   Copyright 2005/2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
+ *
+ *   Based in part on ide-pnp.c by Andrey Panin <pazke@donpac.ru>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/isapnp.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <scsi/scsi_host.h>
+#include <linux/ata.h>
+#include <linux/libata.h>
+
+#define DRV_NAME "pata_isapnp"
+#define DRV_VERSION "0.1.5"
+
+static struct scsi_host_template isapnp_sht = {
+        .module                 = THIS_MODULE,
+        .name                   = DRV_NAME,
+        .ioctl                  = ata_scsi_ioctl,
+        .queuecommand           = ata_scsi_queuecmd,
+        .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,
+};
+
+static struct ata_port_operations isapnp_port_ops = {
+        .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,
+
+        .freeze         = ata_bmdma_freeze,
+        .thaw           = ata_bmdma_thaw,
+        .error_handler  = ata_bmdma_error_handler,
+        .post_internal_cmd = ata_bmdma_post_internal_cmd,
+
+        .qc_prep        = ata_qc_prep,
+        .qc_issue       = ata_qc_issue_prot,
+        .eng_timeout    = ata_eng_timeout,
+        .data_xfer      = ata_pio_data_xfer,
+
+        .irq_handler    = ata_interrupt,
+        .irq_clear      = ata_bmdma_irq_clear,
+
+        .port_start     = ata_port_start,
+        .port_stop      = ata_port_stop,
+        .host_stop      = ata_host_stop
+};
+
+/**
+ *      isapnp_init_one         -       attach an isapnp interface
+ *      @idev: PnP device
+ *      @dev_id: matching detect line
+ *
+ *      Register an ISA bus IDE interface. Such interfaces are PIO 0 and
+ *      non shared IRQ.
+ */
+
+static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev_id)
+{
+        struct ata_probe_ent ae;
+
+        if (pnp_port_valid(idev, 0) == 0)
+                return -ENODEV;
+
+        /* FIXME: Should selected polled PIO here not fail */
+        if (pnp_irq_valid(idev, 0) == 0)
+                return -ENODEV;
+
+        memset(&ae, 0, sizeof(struct ata_probe_ent));
+        INIT_LIST_HEAD(&ae.node);
+        ae.dev = &idev->dev;
+        ae.port_ops = &isapnp_port_ops;
+        ae.sht = &isapnp_sht;
+        ae.n_ports = 1;
+        ae.pio_mask = 1;                /* ISA so PIO 0 cycles */
+        ae.irq = pnp_irq(idev, 0);
+        ae.irq_flags = 0;
+        ae.port_flags = ATA_FLAG_SLAVE_POSS;
+        ae.port[0].cmd_addr = pnp_port_start(idev, 0);
+
+        if (pnp_port_valid(idev, 1) == 0) {
+                ae.port[0].altstatus_addr = pnp_port_start(idev, 1);
+                ae.port[0].ctl_addr = pnp_port_start(idev, 1);
+                ae.port_flags |= ATA_FLAG_SRST;
+        }
+        ata_std_ports(&ae.port[0]);
+
+        if (ata_device_add(&ae) == 0)
+                return -ENODEV;
+        return 0;
+}
+
+/**
+ *      isapnp_remove_one       -       unplug an isapnp interface
+ *      @idev: PnP device
+ *
+ *      Remove a previously configured PnP ATA port. Called only on module
+ *      unload events as the core does not currently deal with ISAPnP docking.
+ */
+
+static void isapnp_remove_one(struct pnp_dev *idev)
+{
+        struct device *dev = &idev->dev;
+        struct ata_host *host = dev_get_drvdata(dev);
+
+        ata_host_remove(host);
+        dev_set_drvdata(dev, NULL);
+}
+
+static struct pnp_device_id isapnp_devices[] = {
+        /* Generic ESDI/IDE/ATA compatible hard disk controller */
+        {.id = "PNP0600", .driver_data = 0},
+        {.id = ""}
+};
+
+static struct pnp_driver isapnp_driver = {
+        .name           = DRV_NAME,
+        .id_table       = isapnp_devices,
+        .probe          = isapnp_init_one,
+        .remove         = isapnp_remove_one,
+};
+
+static int __init isapnp_init(void)
+{
+        return pnp_register_driver(&isapnp_driver);
+}
+
+static void __exit isapnp_exit(void)
+{
+        pnp_unregister_driver(&isapnp_driver);
+}
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(isapnp_init);
+module_exit(isapnp_exit);