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34#include <linux/kernel.h>
35#include <linux/module.h>
36#include <linux/pci.h>
37#include <linux/init.h>
38#include <linux/blkdev.h>
39#include <linux/delay.h>
40#include <scsi/scsi_host.h>
41#include <linux/libata.h>
42
43#define DRV_NAME "pata_cs5520"
44#define DRV_VERSION "0.6.6"
45
46struct pio_clocks
47{
48 int address;
49 int assert;
50 int recovery;
51};
52
53static const struct pio_clocks cs5520_pio_clocks[]={
54 {3, 6, 11},
55 {2, 5, 6},
56 {1, 4, 3},
57 {1, 3, 2},
58 {1, 2, 1}
59};
60
61
62
63
64
65
66
67
68
69
70static void cs5520_set_timings(struct ata_port *ap, struct ata_device *adev, int pio)
71{
72 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
73 int slave = adev->devno;
74
75 pio -= XFER_PIO_0;
76
77
78 pci_write_config_byte(pdev, 0x62 + ap->port_no,
79 (cs5520_pio_clocks[pio].recovery << 4) |
80 (cs5520_pio_clocks[pio].assert));
81
82
83 pci_write_config_byte(pdev, 0x64 + 4*ap->port_no + slave,
84 (cs5520_pio_clocks[pio].recovery << 4) |
85 (cs5520_pio_clocks[pio].assert));
86
87 pci_write_config_byte(pdev, 0x66 + 4*ap->port_no + slave,
88 (cs5520_pio_clocks[pio].recovery << 4) |
89 (cs5520_pio_clocks[pio].assert));
90}
91
92
93
94
95
96
97
98
99
100
101static void cs5520_set_piomode(struct ata_port *ap, struct ata_device *adev)
102{
103 cs5520_set_timings(ap, adev, adev->pio_mode);
104}
105
106static struct scsi_host_template cs5520_sht = {
107 ATA_BMDMA_SHT(DRV_NAME),
108 .sg_tablesize = LIBATA_DUMB_MAX_PRD,
109};
110
111static struct ata_port_operations cs5520_port_ops = {
112 .inherits = &ata_bmdma_port_ops,
113 .qc_prep = ata_bmdma_dumb_qc_prep,
114 .cable_detect = ata_cable_40wire,
115 .set_piomode = cs5520_set_piomode,
116};
117
118static int __devinit cs5520_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
119{
120 static const unsigned int cmd_port[] = { 0x1F0, 0x170 };
121 static const unsigned int ctl_port[] = { 0x3F6, 0x376 };
122 struct ata_port_info pi = {
123 .flags = ATA_FLAG_SLAVE_POSS,
124 .pio_mask = ATA_PIO4,
125 .port_ops = &cs5520_port_ops,
126 };
127 const struct ata_port_info *ppi[2];
128 u8 pcicfg;
129 void __iomem *iomap[5];
130 struct ata_host *host;
131 struct ata_ioports *ioaddr;
132 int i, rc;
133
134 rc = pcim_enable_device(pdev);
135 if (rc)
136 return rc;
137
138
139 pci_read_config_byte(pdev, 0x60, &pcicfg);
140
141
142 if ((pcicfg & 3) == 0)
143 return -ENODEV;
144
145 ppi[0] = ppi[1] = &ata_dummy_port_info;
146 if (pcicfg & 1)
147 ppi[0] = π
148 if (pcicfg & 2)
149 ppi[1] = π
150
151 if ((pcicfg & 0x40) == 0) {
152 dev_printk(KERN_WARNING, &pdev->dev,
153 "DMA mode disabled. Enabling.\n");
154 pci_write_config_byte(pdev, 0x60, pcicfg | 0x40);
155 }
156
157 pi.mwdma_mask = id->driver_data;
158
159 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2);
160 if (!host)
161 return -ENOMEM;
162
163
164 if (pci_enable_device_io(pdev)) {
165 printk(KERN_ERR DRV_NAME ": unable to configure BAR2.\n");
166 return -ENODEV;
167 }
168
169 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
170 printk(KERN_ERR DRV_NAME ": unable to configure DMA mask.\n");
171 return -ENODEV;
172 }
173 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
174 printk(KERN_ERR DRV_NAME ": unable to configure consistent DMA mask.\n");
175 return -ENODEV;
176 }
177
178
179 iomap[0] = devm_ioport_map(&pdev->dev, cmd_port[0], 8);
180 iomap[1] = devm_ioport_map(&pdev->dev, ctl_port[0], 1);
181 iomap[2] = devm_ioport_map(&pdev->dev, cmd_port[1], 8);
182 iomap[3] = devm_ioport_map(&pdev->dev, ctl_port[1], 1);
183 iomap[4] = pcim_iomap(pdev, 2, 0);
184
185 if (!iomap[0] || !iomap[1] || !iomap[2] || !iomap[3] || !iomap[4])
186 return -ENOMEM;
187
188 ioaddr = &host->ports[0]->ioaddr;
189 ioaddr->cmd_addr = iomap[0];
190 ioaddr->ctl_addr = iomap[1];
191 ioaddr->altstatus_addr = iomap[1];
192 ioaddr->bmdma_addr = iomap[4];
193 ata_sff_std_ports(ioaddr);
194
195 ata_port_desc(host->ports[0],
196 "cmd 0x%x ctl 0x%x", cmd_port[0], ctl_port[0]);
197 ata_port_pbar_desc(host->ports[0], 4, 0, "bmdma");
198
199 ioaddr = &host->ports[1]->ioaddr;
200 ioaddr->cmd_addr = iomap[2];
201 ioaddr->ctl_addr = iomap[3];
202 ioaddr->altstatus_addr = iomap[3];
203 ioaddr->bmdma_addr = iomap[4] + 8;
204 ata_sff_std_ports(ioaddr);
205
206 ata_port_desc(host->ports[1],
207 "cmd 0x%x ctl 0x%x", cmd_port[1], ctl_port[1]);
208 ata_port_pbar_desc(host->ports[1], 4, 8, "bmdma");
209
210
211 pci_set_master(pdev);
212 rc = ata_host_start(host);
213 if (rc)
214 return rc;
215
216 for (i = 0; i < 2; i++) {
217 static const int irq[] = { 14, 15 };
218 struct ata_port *ap = host->ports[i];
219
220 if (ata_port_is_dummy(ap))
221 continue;
222
223 rc = devm_request_irq(&pdev->dev, irq[ap->port_no],
224 ata_bmdma_interrupt, 0, DRV_NAME, host);
225 if (rc)
226 return rc;
227
228 ata_port_desc(ap, "irq %d", irq[i]);
229 }
230
231 return ata_host_register(host, &cs5520_sht);
232}
233
234#ifdef CONFIG_PM
235
236
237
238
239
240
241
242
243static int cs5520_reinit_one(struct pci_dev *pdev)
244{
245 struct ata_host *host = dev_get_drvdata(&pdev->dev);
246 u8 pcicfg;
247 int rc;
248
249 rc = ata_pci_device_do_resume(pdev);
250 if (rc)
251 return rc;
252
253 pci_read_config_byte(pdev, 0x60, &pcicfg);
254 if ((pcicfg & 0x40) == 0)
255 pci_write_config_byte(pdev, 0x60, pcicfg | 0x40);
256
257 ata_host_resume(host);
258 return 0;
259}
260
261
262
263
264
265
266
267
268
269
270
271static int cs5520_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
272{
273 struct ata_host *host = dev_get_drvdata(&pdev->dev);
274 int rc = 0;
275
276 rc = ata_host_suspend(host, mesg);
277 if (rc)
278 return rc;
279
280 pci_save_state(pdev);
281 return 0;
282}
283#endif
284
285
286
287
288static const struct pci_device_id pata_cs5520[] = {
289 { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), },
290 { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5520), },
291
292 { },
293};
294
295static struct pci_driver cs5520_pci_driver = {
296 .name = DRV_NAME,
297 .id_table = pata_cs5520,
298 .probe = cs5520_init_one,
299 .remove = ata_pci_remove_one,
300#ifdef CONFIG_PM
301 .suspend = cs5520_pci_device_suspend,
302 .resume = cs5520_reinit_one,
303#endif
304};
305
306static int __init cs5520_init(void)
307{
308 return pci_register_driver(&cs5520_pci_driver);
309}
310
311static void __exit cs5520_exit(void)
312{
313 pci_unregister_driver(&cs5520_pci_driver);
314}
315
316MODULE_AUTHOR("Alan Cox");
317MODULE_DESCRIPTION("low-level driver for Cyrix CS5510/5520");
318MODULE_LICENSE("GPL");
319MODULE_DEVICE_TABLE(pci, pata_cs5520);
320MODULE_VERSION(DRV_VERSION);
321
322module_init(cs5520_init);
323module_exit(cs5520_exit);
324
325