1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/pci.h>
28#include <linux/blkdev.h>
29#include <linux/delay.h>
30#include <scsi/scsi_host.h>
31#include <linux/libata.h>
32
33#define DRV_NAME "pata_cs5520"
34#define DRV_VERSION "0.6.6"
35
36struct pio_clocks
37{
38 int address;
39 int assert;
40 int recovery;
41};
42
43static const struct pio_clocks cs5520_pio_clocks[]={
44 {3, 6, 11},
45 {2, 5, 6},
46 {1, 4, 3},
47 {1, 3, 2},
48 {1, 2, 1}
49};
50
51
52
53
54
55
56
57
58
59
60
61static void cs5520_set_timings(struct ata_port *ap, struct ata_device *adev, int pio)
62{
63 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
64 int slave = adev->devno;
65
66 pio -= XFER_PIO_0;
67
68
69 pci_write_config_byte(pdev, 0x62 + ap->port_no,
70 (cs5520_pio_clocks[pio].recovery << 4) |
71 (cs5520_pio_clocks[pio].assert));
72
73
74 pci_write_config_byte(pdev, 0x64 + 4*ap->port_no + slave,
75 (cs5520_pio_clocks[pio].recovery << 4) |
76 (cs5520_pio_clocks[pio].assert));
77
78 pci_write_config_byte(pdev, 0x66 + 4*ap->port_no + slave,
79 (cs5520_pio_clocks[pio].recovery << 4) |
80 (cs5520_pio_clocks[pio].assert));
81}
82
83
84
85
86
87
88
89
90
91
92static void cs5520_set_piomode(struct ata_port *ap, struct ata_device *adev)
93{
94 cs5520_set_timings(ap, adev, adev->pio_mode);
95}
96
97static struct scsi_host_template cs5520_sht = {
98 ATA_BASE_SHT(DRV_NAME),
99 .sg_tablesize = LIBATA_DUMB_MAX_PRD,
100 .dma_boundary = ATA_DMA_BOUNDARY,
101};
102
103static struct ata_port_operations cs5520_port_ops = {
104 .inherits = &ata_bmdma_port_ops,
105 .qc_prep = ata_bmdma_dumb_qc_prep,
106 .cable_detect = ata_cable_40wire,
107 .set_piomode = cs5520_set_piomode,
108};
109
110static int cs5520_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
111{
112 static const unsigned int cmd_port[] = { 0x1F0, 0x170 };
113 static const unsigned int ctl_port[] = { 0x3F6, 0x376 };
114 struct ata_port_info pi = {
115 .flags = ATA_FLAG_SLAVE_POSS,
116 .pio_mask = ATA_PIO4,
117 .port_ops = &cs5520_port_ops,
118 };
119 const struct ata_port_info *ppi[2];
120 u8 pcicfg;
121 void __iomem *iomap[5];
122 struct ata_host *host;
123 struct ata_ioports *ioaddr;
124 int i, rc;
125
126 rc = pcim_enable_device(pdev);
127 if (rc)
128 return rc;
129
130
131 pci_read_config_byte(pdev, 0x60, &pcicfg);
132
133
134 if ((pcicfg & 3) == 0)
135 return -ENODEV;
136
137 ppi[0] = ppi[1] = &ata_dummy_port_info;
138 if (pcicfg & 1)
139 ppi[0] = π
140 if (pcicfg & 2)
141 ppi[1] = π
142
143 if ((pcicfg & 0x40) == 0) {
144 dev_warn(&pdev->dev, "DMA mode disabled. Enabling.\n");
145 pci_write_config_byte(pdev, 0x60, pcicfg | 0x40);
146 }
147
148 pi.mwdma_mask = id->driver_data;
149
150 host = ata_host_alloc_pinfo(&pdev->dev, ppi, 2);
151 if (!host)
152 return -ENOMEM;
153
154
155 if (pci_enable_device_io(pdev)) {
156 printk(KERN_ERR DRV_NAME ": unable to configure BAR2.\n");
157 return -ENODEV;
158 }
159
160 if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
161 printk(KERN_ERR DRV_NAME ": unable to configure DMA mask.\n");
162 return -ENODEV;
163 }
164
165
166 iomap[0] = devm_ioport_map(&pdev->dev, cmd_port[0], 8);
167 iomap[1] = devm_ioport_map(&pdev->dev, ctl_port[0], 1);
168 iomap[2] = devm_ioport_map(&pdev->dev, cmd_port[1], 8);
169 iomap[3] = devm_ioport_map(&pdev->dev, ctl_port[1], 1);
170 iomap[4] = pcim_iomap(pdev, 2, 0);
171
172 if (!iomap[0] || !iomap[1] || !iomap[2] || !iomap[3] || !iomap[4])
173 return -ENOMEM;
174
175 ioaddr = &host->ports[0]->ioaddr;
176 ioaddr->cmd_addr = iomap[0];
177 ioaddr->ctl_addr = iomap[1];
178 ioaddr->altstatus_addr = iomap[1];
179 ioaddr->bmdma_addr = iomap[4];
180 ata_sff_std_ports(ioaddr);
181
182 ata_port_desc(host->ports[0],
183 "cmd 0x%x ctl 0x%x", cmd_port[0], ctl_port[0]);
184 ata_port_pbar_desc(host->ports[0], 4, 0, "bmdma");
185
186 ioaddr = &host->ports[1]->ioaddr;
187 ioaddr->cmd_addr = iomap[2];
188 ioaddr->ctl_addr = iomap[3];
189 ioaddr->altstatus_addr = iomap[3];
190 ioaddr->bmdma_addr = iomap[4] + 8;
191 ata_sff_std_ports(ioaddr);
192
193 ata_port_desc(host->ports[1],
194 "cmd 0x%x ctl 0x%x", cmd_port[1], ctl_port[1]);
195 ata_port_pbar_desc(host->ports[1], 4, 8, "bmdma");
196
197
198 pci_set_master(pdev);
199 rc = ata_host_start(host);
200 if (rc)
201 return rc;
202
203 for (i = 0; i < 2; i++) {
204 static const int irq[] = { 14, 15 };
205 struct ata_port *ap = host->ports[i];
206
207 if (ata_port_is_dummy(ap))
208 continue;
209
210 rc = devm_request_irq(&pdev->dev, irq[ap->port_no],
211 ata_bmdma_interrupt, 0, DRV_NAME, host);
212 if (rc)
213 return rc;
214
215 ata_port_desc(ap, "irq %d", irq[i]);
216 }
217
218 return ata_host_register(host, &cs5520_sht);
219}
220
221#ifdef CONFIG_PM_SLEEP
222
223
224
225
226
227
228
229
230static int cs5520_reinit_one(struct pci_dev *pdev)
231{
232 struct ata_host *host = pci_get_drvdata(pdev);
233 u8 pcicfg;
234 int rc;
235
236 rc = ata_pci_device_do_resume(pdev);
237 if (rc)
238 return rc;
239
240 pci_read_config_byte(pdev, 0x60, &pcicfg);
241 if ((pcicfg & 0x40) == 0)
242 pci_write_config_byte(pdev, 0x60, pcicfg | 0x40);
243
244 ata_host_resume(host);
245 return 0;
246}
247
248
249
250
251
252
253
254
255
256
257
258
259static int cs5520_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
260{
261 struct ata_host *host = pci_get_drvdata(pdev);
262 int rc = 0;
263
264 rc = ata_host_suspend(host, mesg);
265 if (rc)
266 return rc;
267
268 pci_save_state(pdev);
269 return 0;
270}
271#endif
272
273
274
275
276static const struct pci_device_id pata_cs5520[] = {
277 { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), },
278 { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5520), },
279
280 { },
281};
282
283static struct pci_driver cs5520_pci_driver = {
284 .name = DRV_NAME,
285 .id_table = pata_cs5520,
286 .probe = cs5520_init_one,
287 .remove = ata_pci_remove_one,
288#ifdef CONFIG_PM_SLEEP
289 .suspend = cs5520_pci_device_suspend,
290 .resume = cs5520_reinit_one,
291#endif
292};
293
294module_pci_driver(cs5520_pci_driver);
295
296MODULE_AUTHOR("Alan Cox");
297MODULE_DESCRIPTION("low-level driver for Cyrix CS5510/5520");
298MODULE_LICENSE("GPL");
299MODULE_DEVICE_TABLE(pci, pata_cs5520);
300MODULE_VERSION(DRV_VERSION);
301