3 * pata-isapnp.c - ISA PnP PATA controller driver.
4 * Copyright 2005/2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
6 * Based in part on ide-pnp.c by Andrey Panin <pazke@donpac.ru>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/isapnp.h>
12 #include <linux/init.h>
13 #include <linux/blkdev.h>
14 #include <linux/delay.h>
15 #include <scsi/scsi_host.h>
16 #include <linux/ata.h>
17 #include <linux/libata.h>
19 #define DRV_NAME "pata_isapnp"
20 #define DRV_VERSION "0.2.0"
22 static struct scsi_host_template isapnp_sht = {
23 .module = THIS_MODULE,
25 .ioctl = ata_scsi_ioctl,
26 .queuecommand = ata_scsi_queuecmd,
27 .can_queue = ATA_DEF_QUEUE,
28 .this_id = ATA_SHT_THIS_ID,
29 .sg_tablesize = LIBATA_MAX_PRD,
30 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
31 .emulated = ATA_SHT_EMULATED,
32 .use_clustering = ATA_SHT_USE_CLUSTERING,
33 .proc_name = DRV_NAME,
34 .dma_boundary = ATA_DMA_BOUNDARY,
35 .slave_configure = ata_scsi_slave_config,
36 .slave_destroy = ata_scsi_slave_destroy,
37 .bios_param = ata_std_bios_param,
40 static struct ata_port_operations isapnp_port_ops = {
41 .port_disable = ata_port_disable,
42 .tf_load = ata_tf_load,
43 .tf_read = ata_tf_read,
44 .check_status = ata_check_status,
45 .exec_command = ata_exec_command,
46 .dev_select = ata_std_dev_select,
48 .freeze = ata_bmdma_freeze,
49 .thaw = ata_bmdma_thaw,
50 .error_handler = ata_bmdma_error_handler,
51 .post_internal_cmd = ata_bmdma_post_internal_cmd,
53 .qc_prep = ata_qc_prep,
54 .qc_issue = ata_qc_issue_prot,
56 .data_xfer = ata_data_xfer,
58 .irq_handler = ata_interrupt,
59 .irq_clear = ata_bmdma_irq_clear,
61 .irq_ack = ata_irq_ack,
63 .port_start = ata_port_start,
67 * isapnp_init_one - attach an isapnp interface
69 * @dev_id: matching detect line
71 * Register an ISA bus IDE interface. Such interfaces are PIO 0 and
75 static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev_id)
77 struct ata_probe_ent ae;
78 void __iomem *cmd_addr, *ctl_addr;
80 if (pnp_port_valid(idev, 0) == 0)
83 /* FIXME: Should selected polled PIO here not fail */
84 if (pnp_irq_valid(idev, 0) == 0)
87 cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
91 memset(&ae, 0, sizeof(struct ata_probe_ent));
92 INIT_LIST_HEAD(&ae.node);
94 ae.port_ops = &isapnp_port_ops;
97 ae.pio_mask = 1; /* ISA so PIO 0 cycles */
98 ae.irq = pnp_irq(idev, 0);
100 ae.port_flags = ATA_FLAG_SLAVE_POSS;
101 ae.port[0].cmd_addr = cmd_addr;
103 if (pnp_port_valid(idev, 1) == 0) {
104 ctl_addr = devm_ioport_map(&idev->dev,
105 pnp_port_start(idev, 1), 1);
106 ae.port[0].altstatus_addr = ctl_addr;
107 ae.port[0].ctl_addr = ctl_addr;
108 ae.port_flags |= ATA_FLAG_SRST;
110 ata_std_ports(&ae.port[0]);
112 if (ata_device_add(&ae) == 0)
118 * isapnp_remove_one - unplug an isapnp interface
121 * Remove a previously configured PnP ATA port. Called only on module
122 * unload events as the core does not currently deal with ISAPnP docking.
125 static void isapnp_remove_one(struct pnp_dev *idev)
127 struct device *dev = &idev->dev;
128 struct ata_host *host = dev_get_drvdata(dev);
130 ata_host_detach(host);
133 static struct pnp_device_id isapnp_devices[] = {
134 /* Generic ESDI/IDE/ATA compatible hard disk controller */
135 {.id = "PNP0600", .driver_data = 0},
139 static struct pnp_driver isapnp_driver = {
141 .id_table = isapnp_devices,
142 .probe = isapnp_init_one,
143 .remove = isapnp_remove_one,
146 static int __init isapnp_init(void)
148 return pnp_register_driver(&isapnp_driver);
151 static void __exit isapnp_exit(void)
153 pnp_unregister_driver(&isapnp_driver);
156 MODULE_AUTHOR("Alan Cox");
157 MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
158 MODULE_LICENSE("GPL");
159 MODULE_VERSION(DRV_VERSION);
161 module_init(isapnp_init);
162 module_exit(isapnp_exit);