This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / ata / pata_isapnp.c

diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c
new file mode 100644 (file)
index 0000000..a97d55a
--- /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,
+       .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,
+       .slave_destroy          = ata_scsi_slave_destroy,
+       .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,
+
+       .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);