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
);