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);