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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42#include "aic7xxx_osm.h"
43#include "aic7xxx_pci.h"
44
45
46
47#define ID(x) ID_C(x, PCI_CLASS_STORAGE_SCSI)
48
49static const struct pci_device_id ahc_linux_pci_id_table[] = {
50
51 ID(ID_AHA_2902_04_10_15_20C_30C),
52
53 ID(ID_AHA_2930CU),
54 ID(ID_AHA_1480A & ID_DEV_VENDOR_MASK),
55 ID(ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK),
56 ID(ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK),
57 ID(ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK),
58
59 ID(ID_AHA_2940),
60 ID(ID_AHA_3940),
61 ID(ID_AHA_398X),
62 ID(ID_AHA_2944),
63 ID(ID_AHA_3944),
64 ID(ID_AHA_4944),
65
66 ID(ID_AHA_2940U & ID_DEV_VENDOR_MASK),
67 ID(ID_AHA_3940U & ID_DEV_VENDOR_MASK),
68 ID(ID_AHA_2944U & ID_DEV_VENDOR_MASK),
69 ID(ID_AHA_3944U & ID_DEV_VENDOR_MASK),
70 ID(ID_AHA_398XU & ID_DEV_VENDOR_MASK),
71 ID(ID_AHA_4944U & ID_DEV_VENDOR_MASK),
72 ID(ID_AHA_2930U & ID_DEV_VENDOR_MASK),
73 ID(ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK),
74 ID(ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK),
75
76 ID(ID_AHA_2930U2),
77 ID(ID_AHA_2940U2B),
78 ID(ID_AHA_2940U2_OEM),
79 ID(ID_AHA_2940U2),
80 ID(ID_AHA_2950U2B),
81 ID16(ID_AIC7890_ARO & ID_AIC7895_ARO_MASK),
82 ID(ID_AAA_131U2),
83
84 ID(ID_AHA_29160),
85 ID(ID_AHA_29160_CPQ),
86 ID(ID_AHA_29160N),
87 ID(ID_AHA_29160C),
88 ID(ID_AHA_29160B),
89 ID(ID_AHA_19160B),
90 ID(ID_AIC7892_ARO),
91
92 ID(ID_AHA_2940U_DUAL),
93 ID(ID_AHA_3940AU),
94 ID(ID_AHA_3944AU),
95 ID(ID_AIC7895_ARO),
96 ID(ID_AHA_3950U2B_0),
97 ID(ID_AHA_3950U2B_1),
98 ID(ID_AHA_3950U2D_0),
99 ID(ID_AHA_3950U2D_1),
100 ID(ID_AIC7896_ARO),
101
102 ID(ID_AHA_3960D),
103 ID(ID_AHA_3960D_CPQ),
104 ID(ID_AIC7899_ARO),
105
106 ID(ID_AIC7850 & ID_DEV_VENDOR_MASK),
107 ID(ID_AIC7855 & ID_DEV_VENDOR_MASK),
108 ID(ID_AIC7859 & ID_DEV_VENDOR_MASK),
109 ID(ID_AIC7860 & ID_DEV_VENDOR_MASK),
110 ID(ID_AIC7870 & ID_DEV_VENDOR_MASK),
111 ID(ID_AIC7880 & ID_DEV_VENDOR_MASK),
112 ID16(ID_AIC7890 & ID_9005_GENERIC_MASK),
113 ID16(ID_AIC7892 & ID_9005_GENERIC_MASK),
114 ID(ID_AIC7895 & ID_DEV_VENDOR_MASK),
115 ID16(ID_AIC7896 & ID_9005_GENERIC_MASK),
116 ID16(ID_AIC7899 & ID_9005_GENERIC_MASK),
117 ID(ID_AIC7810 & ID_DEV_VENDOR_MASK),
118 ID(ID_AIC7815 & ID_DEV_VENDOR_MASK),
119 { 0 }
120};
121
122MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table);
123
124#ifdef CONFIG_PM
125static int
126ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg)
127{
128 struct ahc_softc *ahc = pci_get_drvdata(pdev);
129 int rc;
130
131 if ((rc = ahc_suspend(ahc)))
132 return rc;
133
134 pci_save_state(pdev);
135 pci_disable_device(pdev);
136
137 if (mesg.event & PM_EVENT_SLEEP)
138 pci_set_power_state(pdev, PCI_D3hot);
139
140 return rc;
141}
142
143static int
144ahc_linux_pci_dev_resume(struct pci_dev *pdev)
145{
146 struct ahc_softc *ahc = pci_get_drvdata(pdev);
147 int rc;
148
149 pci_set_power_state(pdev, PCI_D0);
150 pci_restore_state(pdev);
151
152 if ((rc = pci_enable_device(pdev))) {
153 dev_printk(KERN_ERR, &pdev->dev,
154 "failed to enable device after resume (%d)\n", rc);
155 return rc;
156 }
157
158 pci_set_master(pdev);
159
160 ahc_pci_resume(ahc);
161
162 return (ahc_resume(ahc));
163}
164#endif
165
166static void
167ahc_linux_pci_dev_remove(struct pci_dev *pdev)
168{
169 struct ahc_softc *ahc = pci_get_drvdata(pdev);
170 u_long s;
171
172 if (ahc->platform_data && ahc->platform_data->host)
173 scsi_remove_host(ahc->platform_data->host);
174
175 ahc_lock(ahc, &s);
176 ahc_intr_enable(ahc, FALSE);
177 ahc_unlock(ahc, &s);
178 ahc_free(ahc);
179}
180
181static void
182ahc_linux_pci_inherit_flags(struct ahc_softc *ahc)
183{
184 struct pci_dev *pdev = ahc->dev_softc, *master_pdev;
185 unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0);
186
187 master_pdev = pci_get_slot(pdev->bus, master_devfn);
188 if (master_pdev) {
189 struct ahc_softc *master = pci_get_drvdata(master_pdev);
190 if (master) {
191 ahc->flags &= ~AHC_BIOS_ENABLED;
192 ahc->flags |= master->flags & AHC_BIOS_ENABLED;
193
194 ahc->flags &= ~AHC_PRIMARY_CHANNEL;
195 ahc->flags |= master->flags & AHC_PRIMARY_CHANNEL;
196 } else
197 printk(KERN_ERR "aic7xxx: no multichannel peer found!\n");
198 pci_dev_put(master_pdev);
199 }
200}
201
202static int
203ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
204{
205 char buf[80];
206 const uint64_t mask_39bit = 0x7FFFFFFFFFULL;
207 struct ahc_softc *ahc;
208 ahc_dev_softc_t pci;
209 const struct ahc_pci_identity *entry;
210 char *name;
211 int error;
212 struct device *dev = &pdev->dev;
213
214 pci = pdev;
215 entry = ahc_find_pci_device(pci);
216 if (entry == NULL)
217 return (-ENODEV);
218
219
220
221
222
223
224 sprintf(buf, "ahc_pci:%d:%d:%d",
225 ahc_get_pci_bus(pci),
226 ahc_get_pci_slot(pci),
227 ahc_get_pci_function(pci));
228 name = kmalloc(strlen(buf) + 1, GFP_ATOMIC);
229 if (name == NULL)
230 return (-ENOMEM);
231 strcpy(name, buf);
232 ahc = ahc_alloc(NULL, name);
233 if (ahc == NULL)
234 return (-ENOMEM);
235 if (pci_enable_device(pdev)) {
236 ahc_free(ahc);
237 return (-ENODEV);
238 }
239 pci_set_master(pdev);
240
241 if (sizeof(dma_addr_t) > 4
242 && ahc->features & AHC_LARGE_SCBS
243 && dma_set_mask(dev, mask_39bit) == 0
244 && dma_get_required_mask(dev) > DMA_BIT_MASK(32)) {
245 ahc->flags |= AHC_39BIT_ADDRESSING;
246 } else {
247 if (dma_set_mask(dev, DMA_BIT_MASK(32))) {
248 ahc_free(ahc);
249 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
250 return (-ENODEV);
251 }
252 }
253 ahc->dev_softc = pci;
254 error = ahc_pci_config(ahc, entry);
255 if (error != 0) {
256 ahc_free(ahc);
257 return (-error);
258 }
259
260
261
262
263
264 if ((ahc->features & AHC_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
265 ahc_linux_pci_inherit_flags(ahc);
266
267 pci_set_drvdata(pdev, ahc);
268 ahc_linux_register_host(ahc, &aic7xxx_driver_template);
269 return (0);
270}
271
272
273uint32_t
274ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
275{
276 switch (width) {
277 case 1:
278 {
279 uint8_t retval;
280
281 pci_read_config_byte(pci, reg, &retval);
282 return (retval);
283 }
284 case 2:
285 {
286 uint16_t retval;
287 pci_read_config_word(pci, reg, &retval);
288 return (retval);
289 }
290 case 4:
291 {
292 uint32_t retval;
293 pci_read_config_dword(pci, reg, &retval);
294 return (retval);
295 }
296 default:
297 panic("ahc_pci_read_config: Read size too big");
298
299 return (0);
300 }
301}
302
303void
304ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
305{
306 switch (width) {
307 case 1:
308 pci_write_config_byte(pci, reg, value);
309 break;
310 case 2:
311 pci_write_config_word(pci, reg, value);
312 break;
313 case 4:
314 pci_write_config_dword(pci, reg, value);
315 break;
316 default:
317 panic("ahc_pci_write_config: Write size too big");
318
319 }
320}
321
322
323static struct pci_driver aic7xxx_pci_driver = {
324 .name = "aic7xxx",
325 .probe = ahc_linux_pci_dev_probe,
326#ifdef CONFIG_PM
327 .suspend = ahc_linux_pci_dev_suspend,
328 .resume = ahc_linux_pci_dev_resume,
329#endif
330 .remove = ahc_linux_pci_dev_remove,
331 .id_table = ahc_linux_pci_id_table
332};
333
334int
335ahc_linux_pci_init(void)
336{
337 return pci_register_driver(&aic7xxx_pci_driver);
338}
339
340void
341ahc_linux_pci_exit(void)
342{
343 pci_unregister_driver(&aic7xxx_pci_driver);
344}
345
346static int
347ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, resource_size_t *base)
348{
349 if (aic7xxx_allow_memio == 0)
350 return (ENOMEM);
351
352 *base = pci_resource_start(ahc->dev_softc, 0);
353 if (*base == 0)
354 return (ENOMEM);
355 if (!request_region(*base, 256, "aic7xxx"))
356 return (ENOMEM);
357 return (0);
358}
359
360static int
361ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
362 resource_size_t *bus_addr,
363 uint8_t __iomem **maddr)
364{
365 resource_size_t start;
366 int error;
367
368 error = 0;
369 start = pci_resource_start(ahc->dev_softc, 1);
370 if (start != 0) {
371 *bus_addr = start;
372 if (!request_mem_region(start, 0x1000, "aic7xxx"))
373 error = ENOMEM;
374 if (error == 0) {
375 *maddr = ioremap_nocache(start, 256);
376 if (*maddr == NULL) {
377 error = ENOMEM;
378 release_mem_region(start, 0x1000);
379 }
380 }
381 } else
382 error = ENOMEM;
383 return (error);
384}
385
386int
387ahc_pci_map_registers(struct ahc_softc *ahc)
388{
389 uint32_t command;
390 resource_size_t base;
391 uint8_t __iomem *maddr;
392 int error;
393
394
395
396
397 command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, 4);
398 command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
399 base = 0;
400 maddr = NULL;
401 error = ahc_linux_pci_reserve_mem_region(ahc, &base, &maddr);
402 if (error == 0) {
403 ahc->platform_data->mem_busaddr = base;
404 ahc->tag = BUS_SPACE_MEMIO;
405 ahc->bsh.maddr = maddr;
406 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
407 command | PCIM_CMD_MEMEN, 4);
408
409
410
411
412
413 if (ahc_pci_test_register_access(ahc) != 0) {
414
415 printk("aic7xxx: PCI Device %d:%d:%d "
416 "failed memory mapped test. Using PIO.\n",
417 ahc_get_pci_bus(ahc->dev_softc),
418 ahc_get_pci_slot(ahc->dev_softc),
419 ahc_get_pci_function(ahc->dev_softc));
420 iounmap(maddr);
421 release_mem_region(ahc->platform_data->mem_busaddr,
422 0x1000);
423 ahc->bsh.maddr = NULL;
424 maddr = NULL;
425 } else
426 command |= PCIM_CMD_MEMEN;
427 } else {
428 printk("aic7xxx: PCI%d:%d:%d MEM region 0x%llx "
429 "unavailable. Cannot memory map device.\n",
430 ahc_get_pci_bus(ahc->dev_softc),
431 ahc_get_pci_slot(ahc->dev_softc),
432 ahc_get_pci_function(ahc->dev_softc),
433 (unsigned long long)base);
434 }
435
436
437
438
439 if (maddr == NULL) {
440
441 error = ahc_linux_pci_reserve_io_region(ahc, &base);
442 if (error == 0) {
443 ahc->tag = BUS_SPACE_PIO;
444 ahc->bsh.ioport = (u_long)base;
445 command |= PCIM_CMD_PORTEN;
446 } else {
447 printk("aic7xxx: PCI%d:%d:%d IO region 0x%llx[0..255] "
448 "unavailable. Cannot map device.\n",
449 ahc_get_pci_bus(ahc->dev_softc),
450 ahc_get_pci_slot(ahc->dev_softc),
451 ahc_get_pci_function(ahc->dev_softc),
452 (unsigned long long)base);
453 }
454 }
455 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, 4);
456 return (error);
457}
458
459int
460ahc_pci_map_int(struct ahc_softc *ahc)
461{
462 int error;
463
464 error = request_irq(ahc->dev_softc->irq, ahc_linux_isr,
465 IRQF_SHARED, "aic7xxx", ahc);
466 if (error == 0)
467 ahc->platform_data->irq = ahc->dev_softc->irq;
468
469 return (-error);
470}
471
472
