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Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
2 * ata_generic.c - Generic PATA/SATA controller driver.
3 * Copyright 2005 Red Hat Inc <alan@redhat.com>, all rights reserved.
4 *
Jeff Garzik85cd7252006-08-31 00:03:49 -04005 * Elements from ide/pci/generic.c
Jeff Garzik669a5db2006-08-29 18:12:40 -04006 * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
7 * Portions (C) Copyright 2002 Red Hat Inc <alan@redhat.com>
8 *
9 * May be copied or modified under the terms of the GNU General Public License
Jeff Garzik85cd7252006-08-31 00:03:49 -040010 *
Jeff Garzik669a5db2006-08-29 18:12:40 -040011 * 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
Jeff Garzik85cd7252006-08-31 00:03:49 -040016 * work.
Jeff Garzik669a5db2006-08-29 18:12:40 -040017 */
18
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>
27
28#define DRV_NAME "ata_generic"
Jeff Garzik8bc3fc42007-05-21 20:26:38 -040029#define DRV_VERSION "0.2.12"
Jeff Garzik669a5db2006-08-29 18:12:40 -040030
31/*
32 * A generic parallel ATA driver using libata
33 */
34
35/**
Jeff Garzik669a5db2006-08-29 18:12:40 -040036 * generic_set_mode - mode setting
37 * @ap: interface to set up
Alanb229a7b2007-01-24 11:47:07 +000038 * @unused: returned device on error
Jeff Garzik669a5db2006-08-29 18:12:40 -040039 *
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
Jeff Garzik85cd7252006-08-31 00:03:49 -040043 * and respect them.
Jeff Garzik669a5db2006-08-29 18:12:40 -040044 */
Jeff Garzik85cd7252006-08-31 00:03:49 -040045
Alanb229a7b2007-01-24 11:47:07 +000046static int generic_set_mode(struct ata_port *ap, struct ata_device **unused)
Jeff Garzik669a5db2006-08-29 18:12:40 -040047{
48 int dma_enabled = 0;
49 int i;
50
51 /* Bits 5 and 6 indicate if DMA is active on master/slave */
52 if (ap->ioaddr.bmdma_addr)
Alan Coxd6f4d5e2007-07-03 15:11:30 +010053 dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
Jeff Garzik85cd7252006-08-31 00:03:49 -040054
Jeff Garzik669a5db2006-08-29 18:12:40 -040055 for (i = 0; i < ATA_MAX_DEVICES; i++) {
56 struct ata_device *dev = &ap->device[i];
Tejun Heo9666f402007-05-04 21:27:47 +020057 if (ata_dev_enabled(dev)) {
Jeff Garzik669a5db2006-08-29 18:12:40 -040058 /* We don't really care */
59 dev->pio_mode = XFER_PIO_0;
60 dev->dma_mode = XFER_MW_DMA_0;
Jeff Garzik85cd7252006-08-31 00:03:49 -040061 /* We do need the right mode information for DMA or PIO
Jeff Garzik669a5db2006-08-29 18:12:40 -040062 and this comes from the current configuration flags */
63 if (dma_enabled & (1 << (5 + i))) {
Alan616ece22007-02-20 18:15:03 +000064 ata_id_to_dma_mode(dev, XFER_MW_DMA_0);
Jeff Garzik669a5db2006-08-29 18:12:40 -040065 dev->flags &= ~ATA_DFLAG_PIO;
66 } else {
Alan616ece22007-02-20 18:15:03 +000067 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
Jeff Garzik669a5db2006-08-29 18:12:40 -040068 dev->xfer_mode = XFER_PIO_0;
69 dev->xfer_shift = ATA_SHIFT_PIO;
70 dev->flags |= ATA_DFLAG_PIO;
71 }
72 }
73 }
Alanb229a7b2007-01-24 11:47:07 +000074 return 0;
Jeff Garzik669a5db2006-08-29 18:12:40 -040075}
76
77static struct scsi_host_template generic_sht = {
78 .module = THIS_MODULE,
79 .name = DRV_NAME,
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,
Jeff Garzik669a5db2006-08-29 18:12:40 -040085 .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,
Tejun Heoafdfe892006-11-29 11:26:47 +090091 .slave_destroy = ata_scsi_slave_destroy,
Jeff Garzik669a5db2006-08-29 18:12:40 -040092 .bios_param = ata_std_bios_param,
93};
94
95static struct ata_port_operations generic_port_ops = {
96 .set_mode = generic_set_mode,
Jeff Garzik85cd7252006-08-31 00:03:49 -040097
Jeff Garzik669a5db2006-08-29 18:12:40 -040098 .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,
104
105 .bmdma_setup = ata_bmdma_setup,
106 .bmdma_start = ata_bmdma_start,
107 .bmdma_stop = ata_bmdma_stop,
108 .bmdma_status = ata_bmdma_status,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400109
Tejun Heo0d5ff562007-02-01 15:06:36 +0900110 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400111
112 .freeze = ata_bmdma_freeze,
113 .thaw = ata_bmdma_thaw,
Alan Coxeb4a2c72007-04-11 00:04:20 +0100114 .error_handler = ata_bmdma_error_handler,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400115 .post_internal_cmd = ata_bmdma_post_internal_cmd,
Alan Coxeb4a2c72007-04-11 00:04:20 +0100116 .cable_detect = ata_cable_unknown,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400117
118 .qc_prep = ata_qc_prep,
119 .qc_issue = ata_qc_issue_prot,
Jeff Garzikbda30282006-09-27 05:41:13 -0400120
Jeff Garzik669a5db2006-08-29 18:12:40 -0400121 .irq_handler = ata_interrupt,
122 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +0900123 .irq_on = ata_irq_on,
124 .irq_ack = ata_irq_ack,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400125
126 .port_start = ata_port_start,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400127};
128
Jeff Garzik669a5db2006-08-29 18:12:40 -0400129static int all_generic_ide; /* Set to claim all devices */
130
131/**
132 * ata_generic_init - attach generic IDE
133 * @dev: PCI device found
134 * @id: match entry
135 *
136 * Called each time a matching IDE interface is found. We check if the
Jeff Garzik85cd7252006-08-31 00:03:49 -0400137 * interface is one we wish to claim and if so we perform any chip
Jeff Garzik669a5db2006-08-29 18:12:40 -0400138 * specific hacks then let the ATA layer do the heavy lifting.
139 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400140
Jeff Garzik669a5db2006-08-29 18:12:40 -0400141static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
142{
143 u16 command;
Tejun Heo1626aeb2007-05-04 12:43:58 +0200144 static const struct ata_port_info info = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400145 .sht = &generic_sht,
146 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
147 .pio_mask = 0x1f,
148 .mwdma_mask = 0x07,
149 .udma_mask = 0x3f,
150 .port_ops = &generic_port_ops
151 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200152 const struct ata_port_info *ppi[] = { &info, NULL };
Jeff Garzik85cd7252006-08-31 00:03:49 -0400153
Jeff Garzik669a5db2006-08-29 18:12:40 -0400154 /* Don't use the generic entry unless instructed to do so */
155 if (id->driver_data == 1 && all_generic_ide == 0)
156 return -ENODEV;
157
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)))
162 return -ENODEV;
163
164 if (dev->vendor == PCI_VENDOR_ID_OPTI &&
165 dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
166 (!(PCI_FUNC(dev->devfn) & 1)))
167 return -ENODEV;
168
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))
173 return -ENODEV;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400174
Jeff Garzik669a5db2006-08-29 18:12:40 -0400175 if (dev->vendor == PCI_VENDOR_ID_AL)
176 ata_pci_clear_simplex(dev);
177
Tejun Heo1626aeb2007-05-04 12:43:58 +0200178 return ata_pci_init_one(dev, ppi);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400179}
180
181static 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), },
Jeff Garzik85cd7252006-08-31 00:03:49 -0400184 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8673F), },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400185 { 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},
195 { 0, },
196};
197
198static struct pci_driver ata_generic_pci_driver = {
199 .name = DRV_NAME,
200 .id_table = ata_generic,
201 .probe = ata_generic_init_one,
Alan30ced0f2006-11-22 16:57:36 +0000202 .remove = ata_pci_remove_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900203#ifdef CONFIG_PM
Alan30ced0f2006-11-22 16:57:36 +0000204 .suspend = ata_pci_device_suspend,
205 .resume = ata_pci_device_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900206#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400207};
208
209static int __init ata_generic_init(void)
210{
Henrik Kretzschmar3f03c672006-10-10 14:28:12 -0700211 return pci_register_driver(&ata_generic_pci_driver);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400212}
213
214
215static void __exit ata_generic_exit(void)
216{
217 pci_unregister_driver(&ata_generic_pci_driver);
218}
219
220
221MODULE_AUTHOR("Alan Cox");
222MODULE_DESCRIPTION("low-level driver for generic ATA");
223MODULE_LICENSE("GPL");
224MODULE_DEVICE_TABLE(pci, ata_generic);
225MODULE_VERSION(DRV_VERSION);
226
227module_init(ata_generic_init);
228module_exit(ata_generic_exit);
229
230module_param(all_generic_ide, int, 0);