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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"
29#define DRV_VERSION "0.2.15"
30
31
32
33
34
35enum {
36 ATA_GEN_CLASS_MATCH = (1 << 0),
37 ATA_GEN_FORCE_DMA = (1 << 1),
38 ATA_GEN_INTEL_IDER = (1 << 2),
39};
40
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50
51
52static int generic_set_mode(struct ata_link *link, struct ata_device **unused)
53{
54 struct ata_port *ap = link->ap;
55 const struct pci_device_id *id = ap->host->private_data;
56 int dma_enabled = 0;
57 struct ata_device *dev;
58
59 if (id->driver_data & ATA_GEN_FORCE_DMA) {
60 dma_enabled = 0xff;
61 } else if (ap->ioaddr.bmdma_addr) {
62
63 dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
64 }
65
66 ata_for_each_dev(dev, link, ENABLED) {
67
68 dev->pio_mode = XFER_PIO_0;
69 dev->dma_mode = XFER_MW_DMA_0;
70
71
72 if (dma_enabled & (1 << (5 + dev->devno))) {
73 unsigned int xfer_mask = ata_id_xfermask(dev->id);
74 const char *name;
75
76 if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA))
77 name = ata_mode_string(xfer_mask);
78 else {
79
80 name = "DMA";
81 xfer_mask |= ata_xfer_mode2mask(XFER_MW_DMA_0);
82 }
83
84 ata_dev_printk(dev, KERN_INFO, "configured for %s\n",
85 name);
86
87 dev->xfer_mode = ata_xfer_mask2mode(xfer_mask);
88 dev->xfer_shift = ata_xfer_mode2shift(dev->xfer_mode);
89 dev->flags &= ~ATA_DFLAG_PIO;
90 } else {
91 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
92 dev->xfer_mode = XFER_PIO_0;
93 dev->xfer_shift = ATA_SHIFT_PIO;
94 dev->flags |= ATA_DFLAG_PIO;
95 }
96 }
97 return 0;
98}
99
100static struct scsi_host_template generic_sht = {
101 ATA_BMDMA_SHT(DRV_NAME),
102};
103
104static struct ata_port_operations generic_port_ops = {
105 .inherits = &ata_bmdma_port_ops,
106 .cable_detect = ata_cable_unknown,
107 .set_mode = generic_set_mode,
108};
109
110static int all_generic_ide;
111
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125
126static int is_intel_ider(struct pci_dev *dev)
127{
128
129
130 u32 r;
131 u16 t;
132
133
134 pci_read_config_dword(dev, 0xF8, &r);
135
136 if (r != 0)
137 return 0;
138
139
140 pci_read_config_word(dev, 0x40, &t);
141 if (t != 0)
142 return 0;
143
144
145
146 pci_write_config_word(dev, 0x40, 1);
147 pci_read_config_word(dev, 0x40, &t);
148 if (t) {
149 pci_write_config_word(dev, 0x40, 0);
150 return 0;
151 }
152 return 1;
153}
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164
165static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
166{
167 u16 command;
168 static const struct ata_port_info info = {
169 .flags = ATA_FLAG_SLAVE_POSS,
170 .pio_mask = ATA_PIO4,
171 .mwdma_mask = ATA_MWDMA2,
172 .udma_mask = ATA_UDMA5,
173 .port_ops = &generic_port_ops
174 };
175 const struct ata_port_info *ppi[] = { &info, NULL };
176
177
178 if ((id->driver_data & ATA_GEN_CLASS_MATCH) && all_generic_ide == 0)
179 return -ENODEV;
180
181 if (id->driver_data & ATA_GEN_INTEL_IDER)
182 if (!is_intel_ider(dev))
183 return -ENODEV;
184
185
186 if (dev->vendor == PCI_VENDOR_ID_UMC &&
187 dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
188 (!(PCI_FUNC(dev->devfn) & 1)))
189 return -ENODEV;
190
191 if (dev->vendor == PCI_VENDOR_ID_OPTI &&
192 dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
193 (!(PCI_FUNC(dev->devfn) & 1)))
194 return -ENODEV;
195
196
197
198 pci_read_config_word(dev, PCI_COMMAND, &command);
199 if (!(command & PCI_COMMAND_IO))
200 return -ENODEV;
201
202 if (dev->vendor == PCI_VENDOR_ID_AL)
203 ata_pci_bmdma_clear_simplex(dev);
204
205 if (dev->vendor == PCI_VENDOR_ID_ATI) {
206 int rc = pcim_enable_device(dev);
207 if (rc < 0)
208 return rc;
209 pcim_pin_device(dev);
210 }
211 return ata_pci_bmdma_init_one(dev, ppi, &generic_sht, (void *)id, 0);
212}
213
214static struct pci_device_id ata_generic[] = {
215 { PCI_DEVICE(PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_SAMURAI_IDE), },
216 { PCI_DEVICE(PCI_VENDOR_ID_HOLTEK, PCI_DEVICE_ID_HOLTEK_6565), },
217 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8673F), },
218 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886A), },
219 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF), },
220 { PCI_DEVICE(PCI_VENDOR_ID_HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), },
221 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), },
222 { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), },
223 { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE),
224 .driver_data = ATA_GEN_FORCE_DMA },
225
226
227
228
229 { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA,
230 PCI_VENDOR_ID_APPLE, 0xcb89,
231 .driver_data = ATA_GEN_FORCE_DMA },
232#if !defined(CONFIG_PATA_TOSHIBA) && !defined(CONFIG_PATA_TOSHIBA_MODULE)
233 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },
234 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), },
235 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_3), },
236 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_5), },
237#endif
238
239 { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
240 PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL,
241 .driver_data = ATA_GEN_INTEL_IDER },
242
243 { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL),
244 .driver_data = ATA_GEN_CLASS_MATCH },
245 { 0, },
246};
247
248static struct pci_driver ata_generic_pci_driver = {
249 .name = DRV_NAME,
250 .id_table = ata_generic,
251 .probe = ata_generic_init_one,
252 .remove = ata_pci_remove_one,
253#ifdef CONFIG_PM
254 .suspend = ata_pci_device_suspend,
255 .resume = ata_pci_device_resume,
256#endif
257};
258
259static int __init ata_generic_init(void)
260{
261 return pci_register_driver(&ata_generic_pci_driver);
262}
263
264
265static void __exit ata_generic_exit(void)
266{
267 pci_unregister_driver(&ata_generic_pci_driver);
268}
269
270
271MODULE_AUTHOR("Alan Cox");
272MODULE_DESCRIPTION("low-level driver for generic ATA");
273MODULE_LICENSE("GPL");
274MODULE_DEVICE_TABLE(pci, ata_generic);
275MODULE_VERSION(DRV_VERSION);
276
277module_init(ata_generic_init);
278module_exit(ata_generic_exit);
279
280module_param(all_generic_ide, int, 0);
281