2 * ata_generic.c - Generic PATA/SATA controller driver.
3 * Copyright 2005 Red Hat Inc <alan@redhat.com>, all rights reserved.
5 * Elements from ide/pci/generic.c
6 * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
7 * Portions (C) Copyright 2002 Red Hat Inc <alan@redhat.com>
9 * May be copied or modified under the terms of the GNU General Public License
11 * Driver for PCI IDE interfaces implementing the standard bus mastering
12 * interface functionality. This assumes the BIOS did the drive set up and
13 * tuning for us. By default we do not grab all IDE class devices as they
14 * may have other drivers or need fixups to avoid problems. Instead we keep
15 * a default list of stuff without documentation/driver that appears to
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/pci.h>
22 #include <linux/init.h>
23 #include <linux/blkdev.h>
24 #include <linux/delay.h>
25 #include <scsi/scsi_host.h>
26 #include <linux/libata.h>
28 #define DRV_NAME "ata_generic"
29 #define DRV_VERSION "0.2.12"
32 * A generic parallel ATA driver using libata
36 * generic_set_mode - mode setting
37 * @ap: interface to set up
38 * @unused: returned device on error
40 * Use a non standard set_mode function. We don't want to be tuned.
41 * The BIOS configured everything. Our job is not to fiddle. We
42 * read the dma enabled bits from the PCI configuration of the device
46 static int generic_set_mode(struct ata_port *ap, struct ata_device **unused)
51 /* Bits 5 and 6 indicate if DMA is active on master/slave */
52 if (ap->ioaddr.bmdma_addr)
53 dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
55 for (i = 0; i < ATA_MAX_DEVICES; i++) {
56 struct ata_device *dev = &ap->device[i];
57 if (ata_dev_enabled(dev)) {
58 /* We don't really care */
59 dev->pio_mode = XFER_PIO_0;
60 dev->dma_mode = XFER_MW_DMA_0;
61 /* We do need the right mode information for DMA or PIO
62 and this comes from the current configuration flags */
63 if (dma_enabled & (1 << (5 + i))) {
64 ata_id_to_dma_mode(dev, XFER_MW_DMA_0);
65 dev->flags &= ~ATA_DFLAG_PIO;
67 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
68 dev->xfer_mode = XFER_PIO_0;
69 dev->xfer_shift = ATA_SHIFT_PIO;
70 dev->flags |= ATA_DFLAG_PIO;
77 static struct scsi_host_template generic_sht = {
78 .module = THIS_MODULE,
80 .ioctl = ata_scsi_ioctl,
81 .queuecommand = ata_scsi_queuecmd,
82 .can_queue = ATA_DEF_QUEUE,
83 .this_id = ATA_SHT_THIS_ID,
84 .sg_tablesize = LIBATA_MAX_PRD,
85 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
86 .emulated = ATA_SHT_EMULATED,
87 .use_clustering = ATA_SHT_USE_CLUSTERING,
88 .proc_name = DRV_NAME,
89 .dma_boundary = ATA_DMA_BOUNDARY,
90 .slave_configure = ata_scsi_slave_config,
91 .slave_destroy = ata_scsi_slave_destroy,
92 .bios_param = ata_std_bios_param,
95 static struct ata_port_operations generic_port_ops = {
96 .set_mode = generic_set_mode,
98 .port_disable = ata_port_disable,
99 .tf_load = ata_tf_load,
100 .tf_read = ata_tf_read,
101 .check_status = ata_check_status,
102 .exec_command = ata_exec_command,
103 .dev_select = ata_std_dev_select,
105 .bmdma_setup = ata_bmdma_setup,
106 .bmdma_start = ata_bmdma_start,
107 .bmdma_stop = ata_bmdma_stop,
108 .bmdma_status = ata_bmdma_status,
110 .data_xfer = ata_data_xfer,
112 .freeze = ata_bmdma_freeze,
113 .thaw = ata_bmdma_thaw,
114 .error_handler = ata_bmdma_error_handler,
115 .post_internal_cmd = ata_bmdma_post_internal_cmd,
116 .cable_detect = ata_cable_unknown,
118 .qc_prep = ata_qc_prep,
119 .qc_issue = ata_qc_issue_prot,
121 .irq_handler = ata_interrupt,
122 .irq_clear = ata_bmdma_irq_clear,
123 .irq_on = ata_irq_on,
124 .irq_ack = ata_irq_ack,
126 .port_start = ata_port_start,
129 static int all_generic_ide; /* Set to claim all devices */
132 * ata_generic_init - attach generic IDE
133 * @dev: PCI device found
136 * Called each time a matching IDE interface is found. We check if the
137 * interface is one we wish to claim and if so we perform any chip
138 * specific hacks then let the ATA layer do the heavy lifting.
141 static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
144 static const struct ata_port_info info = {
146 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
150 .port_ops = &generic_port_ops
152 const struct ata_port_info *ppi[] = { &info, NULL };
154 /* Don't use the generic entry unless instructed to do so */
155 if (id->driver_data == 1 && all_generic_ide == 0)
158 /* Devices that need care */
159 if (dev->vendor == PCI_VENDOR_ID_UMC &&
160 dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
161 (!(PCI_FUNC(dev->devfn) & 1)))
164 if (dev->vendor == PCI_VENDOR_ID_OPTI &&
165 dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
166 (!(PCI_FUNC(dev->devfn) & 1)))
169 /* Don't re-enable devices in generic mode or we will break some
170 motherboards with disabled and unused IDE controllers */
171 pci_read_config_word(dev, PCI_COMMAND, &command);
172 if (!(command & PCI_COMMAND_IO))
175 if (dev->vendor == PCI_VENDOR_ID_AL)
176 ata_pci_clear_simplex(dev);
178 return ata_pci_init_one(dev, ppi);
181 static struct pci_device_id ata_generic[] = {
182 { PCI_DEVICE(PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_SAMURAI_IDE), },
183 { PCI_DEVICE(PCI_VENDOR_ID_HOLTEK, PCI_DEVICE_ID_HOLTEK_6565), },
184 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8673F), },
185 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886A), },
186 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF), },
187 { PCI_DEVICE(PCI_VENDOR_ID_HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), },
188 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), },
189 { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), },
190 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO), },
191 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },
192 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), },
193 /* Must come last. If you add entries adjust this table appropriately */
194 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 1},
198 static struct pci_driver ata_generic_pci_driver = {
200 .id_table = ata_generic,
201 .probe = ata_generic_init_one,
202 .remove = ata_pci_remove_one,
204 .suspend = ata_pci_device_suspend,
205 .resume = ata_pci_device_resume,
209 static int __init ata_generic_init(void)
211 return pci_register_driver(&ata_generic_pci_driver);
215 static void __exit ata_generic_exit(void)
217 pci_unregister_driver(&ata_generic_pci_driver);
221 MODULE_AUTHOR("Alan Cox");
222 MODULE_DESCRIPTION("low-level driver for generic ATA");
223 MODULE_LICENSE("GPL");
224 MODULE_DEVICE_TABLE(pci, ata_generic);
225 MODULE_VERSION(DRV_VERSION);
227 module_init(ata_generic_init);
228 module_exit(ata_generic_exit);
230 module_param(all_generic_ide, int, 0);