projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 669a5db4 JG |
1 | |
| 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 | ||
| 22 | static 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 | ||
| 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, | |
| 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, | |
| 55 | .eng_timeout = ata_eng_timeout, | |
| 56 | .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 | ||
| 75 | static 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 | ||
| 118 | static 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 | ||
| 127 | static 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 | ||
| 133 | static 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 | ||
| 140 | static int __init isapnp_init(void) | |
| 141 | { | |
| 142 | return pnp_register_driver(&isapnp_driver); | |
| 143 | } | |
| 144 | ||
| 145 | static void __exit isapnp_exit(void) | |
| 146 | { | |
| 147 | pnp_unregister_driver(&isapnp_driver); | |
| 148 | } | |
| 149 | ||
| 150 | MODULE_AUTHOR("Alan Cox"); | |
| 151 | MODULE_DESCRIPTION("low-level driver for ISA PnP ATA"); | |
| 152 | MODULE_LICENSE("GPL"); | |
| 153 | MODULE_VERSION(DRV_VERSION); | |
| 154 | ||
| 155 | module_init(isapnp_init); | |
| 156 | module_exit(isapnp_exit); |