blob: 640b8b0954f53ab5cd7a439c9c525040f796f4d9 [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001
2/*
3 * pata-isapnp.c - ISA PnP PATA controller driver.
4 * Copyright 2005/2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
5 *
6 * Based in part on ide-pnp.c by Andrey Panin <pazke@donpac.ru>
7 */
8
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>
18
19#define DRV_NAME "pata_isapnp"
20#define DRV_VERSION "0.1.5"
21
22static struct scsi_host_template isapnp_sht = {
23 .module = THIS_MODULE,
24 .name = DRV_NAME,
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 .max_sectors = ATA_MAX_SECTORS,
31 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
32 .emulated = ATA_SHT_EMULATED,
33 .use_clustering = ATA_SHT_USE_CLUSTERING,
34 .proc_name = DRV_NAME,
35 .dma_boundary = ATA_DMA_BOUNDARY,
36 .slave_configure = ata_scsi_slave_config,
37 .bios_param = ata_std_bios_param,
38};
39
40static 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,
47
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,
52
53 .qc_prep = ata_qc_prep,
54 .qc_issue = ata_qc_issue_prot,
Jeff Garzikbda30282006-09-27 05:41:13 -040055
Jeff Garzik669a5db2006-08-29 18:12:40 -040056 .data_xfer = ata_pio_data_xfer,
57
58 .irq_handler = ata_interrupt,
59 .irq_clear = ata_bmdma_irq_clear,
60
61 .port_start = ata_port_start,
62 .port_stop = ata_port_stop,
63 .host_stop = ata_host_stop
64};
65
66/**
67 * isapnp_init_one - attach an isapnp interface
68 * @idev: PnP device
69 * @dev_id: matching detect line
70 *
71 * Register an ISA bus IDE interface. Such interfaces are PIO 0 and
72 * non shared IRQ.
73 */
74
75static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev_id)
76{
77 struct ata_probe_ent ae;
78
79 if (pnp_port_valid(idev, 0) == 0)
80 return -ENODEV;
81
82 /* FIXME: Should selected polled PIO here not fail */
83 if (pnp_irq_valid(idev, 0) == 0)
84 return -ENODEV;
85
86 memset(&ae, 0, sizeof(struct ata_probe_ent));
87 INIT_LIST_HEAD(&ae.node);
88 ae.dev = &idev->dev;
89 ae.port_ops = &isapnp_port_ops;
90 ae.sht = &isapnp_sht;
91 ae.n_ports = 1;
92 ae.pio_mask = 1; /* ISA so PIO 0 cycles */
93 ae.irq = pnp_irq(idev, 0);
94 ae.irq_flags = 0;
95 ae.port_flags = ATA_FLAG_SLAVE_POSS;
96 ae.port[0].cmd_addr = pnp_port_start(idev, 0);
97
98 if (pnp_port_valid(idev, 1) == 0) {
99 ae.port[0].altstatus_addr = pnp_port_start(idev, 1);
100 ae.port[0].ctl_addr = pnp_port_start(idev, 1);
101 ae.port_flags |= ATA_FLAG_SRST;
102 }
103 ata_std_ports(&ae.port[0]);
104
105 if (ata_device_add(&ae) == 0)
106 return -ENODEV;
107 return 0;
108}
109
110/**
111 * isapnp_remove_one - unplug an isapnp interface
112 * @idev: PnP device
113 *
114 * Remove a previously configured PnP ATA port. Called only on module
115 * unload events as the core does not currently deal with ISAPnP docking.
116 */
117
118static void isapnp_remove_one(struct pnp_dev *idev)
119{
120 struct device *dev = &idev->dev;
121 struct ata_host *host = dev_get_drvdata(dev);
122
123 ata_host_remove(host);
124 dev_set_drvdata(dev, NULL);
125}
126
127static struct pnp_device_id isapnp_devices[] = {
128 /* Generic ESDI/IDE/ATA compatible hard disk controller */
129 {.id = "PNP0600", .driver_data = 0},
130 {.id = ""}
131};
132
133static struct pnp_driver isapnp_driver = {
134 .name = DRV_NAME,
135 .id_table = isapnp_devices,
136 .probe = isapnp_init_one,
137 .remove = isapnp_remove_one,
138};
139
140static int __init isapnp_init(void)
141{
142 return pnp_register_driver(&isapnp_driver);
143}
144
145static void __exit isapnp_exit(void)
146{
147 pnp_unregister_driver(&isapnp_driver);
148}
149
150MODULE_AUTHOR("Alan Cox");
151MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
152MODULE_LICENSE("GPL");
153MODULE_VERSION(DRV_VERSION);
154
155module_init(isapnp_init);
156module_exit(isapnp_exit);