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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
124static int __maybe_unused
125ahc_linux_pci_dev_suspend(struct device *dev)
126{
127 struct ahc_softc *ahc = dev_get_drvdata(dev);
128
129 return ahc_suspend(ahc);
130}
131
132static int __maybe_unused
133ahc_linux_pci_dev_resume(struct device *dev)
134{
135 struct ahc_softc *ahc = dev_get_drvdata(dev);
136
137 ahc_pci_resume(ahc);
138
139 return (ahc_resume(ahc));
140}
141
142static void
143ahc_linux_pci_dev_remove(struct pci_dev *pdev)
144{
145 struct ahc_softc *ahc = pci_get_drvdata(pdev);
146 u_long s;
147
148 if (ahc->platform_data && ahc->platform_data->host)
149 scsi_remove_host(ahc->platform_data->host);
150
151 ahc_lock(ahc, &s);
152 ahc_intr_enable(ahc, FALSE);
153 ahc_unlock(ahc, &s);
154 ahc_free(ahc);
155}
156
157static void
158ahc_linux_pci_inherit_flags(struct ahc_softc *ahc)
159{
160 struct pci_dev *pdev = ahc->dev_softc, *master_pdev;
161 unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0);
162
163 master_pdev = pci_get_slot(pdev->bus, master_devfn);
164 if (master_pdev) {
165 struct ahc_softc *master = pci_get_drvdata(master_pdev);
166 if (master) {
167 ahc->flags &= ~AHC_BIOS_ENABLED;
168 ahc->flags |= master->flags & AHC_BIOS_ENABLED;
169
170 ahc->flags &= ~AHC_PRIMARY_CHANNEL;
171 ahc->flags |= master->flags & AHC_PRIMARY_CHANNEL;
172 } else
173 printk(KERN_ERR "aic7xxx: no multichannel peer found!\n");
174 pci_dev_put(master_pdev);
175 }
176}
177
178static int
179ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
180{
181 char buf[80];
182 const uint64_t mask_39bit = 0x7FFFFFFFFFULL;
183 struct ahc_softc *ahc;
184 ahc_dev_softc_t pci;
185 const struct ahc_pci_identity *entry;
186 char *name;
187 int error;
188 struct device *dev = &pdev->dev;
189
190 pci = pdev;
191 entry = ahc_find_pci_device(pci);
192 if (entry == NULL)
193 return (-ENODEV);
194
195
196
197
198
199
200 sprintf(buf, "ahc_pci:%d:%d:%d",
201 ahc_get_pci_bus(pci),
202 ahc_get_pci_slot(pci),
203 ahc_get_pci_function(pci));
204 name = kstrdup(buf, GFP_ATOMIC);
205 if (name == NULL)
206 return (-ENOMEM);
207 ahc = ahc_alloc(NULL, name);
208 if (ahc == NULL)
209 return (-ENOMEM);
210 if (pci_enable_device(pdev)) {
211 ahc_free(ahc);
212 return (-ENODEV);
213 }
214 pci_set_master(pdev);
215
216 if (sizeof(dma_addr_t) > 4
217 && ahc->features & AHC_LARGE_SCBS
218 && dma_set_mask(dev, mask_39bit) == 0
219 && dma_get_required_mask(dev) > DMA_BIT_MASK(32)) {
220 ahc->flags |= AHC_39BIT_ADDRESSING;
221 } else {
222 if (dma_set_mask(dev, DMA_BIT_MASK(32))) {
223 ahc_free(ahc);
224 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
225 return (-ENODEV);
226 }
227 }
228 ahc->dev_softc = pci;
229 ahc->dev = &pci->dev;
230 error = ahc_pci_config(ahc, entry);
231 if (error != 0) {
232 ahc_free(ahc);
233 return (-error);
234 }
235
236
237
238
239
240 if ((ahc->features & AHC_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
241 ahc_linux_pci_inherit_flags(ahc);
242
243 pci_set_drvdata(pdev, ahc);
244 ahc_linux_register_host(ahc, &aic7xxx_driver_template);
245 return (0);
246}
247
248
249uint32_t
250ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
251{
252 switch (width) {
253 case 1:
254 {
255 uint8_t retval;
256
257 pci_read_config_byte(pci, reg, &retval);
258 return (retval);
259 }
260 case 2:
261 {
262 uint16_t retval;
263 pci_read_config_word(pci, reg, &retval);
264 return (retval);
265 }
266 case 4:
267 {
268 uint32_t retval;
269 pci_read_config_dword(pci, reg, &retval);
270 return (retval);
271 }
272 default:
273 panic("ahc_pci_read_config: Read size too big");
274
275 return (0);
276 }
277}
278
279void
280ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
281{
282 switch (width) {
283 case 1:
284 pci_write_config_byte(pci, reg, value);
285 break;
286 case 2:
287 pci_write_config_word(pci, reg, value);
288 break;
289 case 4:
290 pci_write_config_dword(pci, reg, value);
291 break;
292 default:
293 panic("ahc_pci_write_config: Write size too big");
294
295 }
296}
297
298static SIMPLE_DEV_PM_OPS(ahc_linux_pci_dev_pm_ops,
299 ahc_linux_pci_dev_suspend,
300 ahc_linux_pci_dev_resume);
301
302static struct pci_driver aic7xxx_pci_driver = {
303 .name = "aic7xxx",
304 .probe = ahc_linux_pci_dev_probe,
305 .driver.pm = &ahc_linux_pci_dev_pm_ops,
306 .remove = ahc_linux_pci_dev_remove,
307 .id_table = ahc_linux_pci_id_table
308};
309
310int
311ahc_linux_pci_init(void)
312{
313 return pci_register_driver(&aic7xxx_pci_driver);
314}
315
316void
317ahc_linux_pci_exit(void)
318{
319 pci_unregister_driver(&aic7xxx_pci_driver);
320}
321
322static int
323ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, resource_size_t *base)
324{
325 if (aic7xxx_allow_memio == 0)
326 return (ENOMEM);
327
328 *base = pci_resource_start(ahc->dev_softc, 0);
329 if (*base == 0)
330 return (ENOMEM);
331 if (!request_region(*base, 256, "aic7xxx"))
332 return (ENOMEM);
333 return (0);
334}
335
336static int
337ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc,
338 resource_size_t *bus_addr,
339 uint8_t __iomem **maddr)
340{
341 resource_size_t start;
342 int error;
343
344 error = 0;
345 start = pci_resource_start(ahc->dev_softc, 1);
346 if (start != 0) {
347 *bus_addr = start;
348 if (!request_mem_region(start, 0x1000, "aic7xxx"))
349 error = ENOMEM;
350 if (error == 0) {
351 *maddr = ioremap(start, 256);
352 if (*maddr == NULL) {
353 error = ENOMEM;
354 release_mem_region(start, 0x1000);
355 }
356 }
357 } else
358 error = ENOMEM;
359 return (error);
360}
361
362int
363ahc_pci_map_registers(struct ahc_softc *ahc)
364{
365 uint32_t command;
366 resource_size_t base;
367 uint8_t __iomem *maddr;
368 int error;
369
370
371
372
373 command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, 4);
374 command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
375 base = 0;
376 maddr = NULL;
377 error = ahc_linux_pci_reserve_mem_region(ahc, &base, &maddr);
378 if (error == 0) {
379 ahc->platform_data->mem_busaddr = base;
380 ahc->tag = BUS_SPACE_MEMIO;
381 ahc->bsh.maddr = maddr;
382 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
383 command | PCIM_CMD_MEMEN, 4);
384
385
386
387
388
389 if (ahc_pci_test_register_access(ahc) != 0) {
390
391 printk("aic7xxx: PCI Device %d:%d:%d "
392 "failed memory mapped test. Using PIO.\n",
393 ahc_get_pci_bus(ahc->dev_softc),
394 ahc_get_pci_slot(ahc->dev_softc),
395 ahc_get_pci_function(ahc->dev_softc));
396 iounmap(maddr);
397 release_mem_region(ahc->platform_data->mem_busaddr,
398 0x1000);
399 ahc->bsh.maddr = NULL;
400 maddr = NULL;
401 } else
402 command |= PCIM_CMD_MEMEN;
403 } else {
404 printk("aic7xxx: PCI%d:%d:%d MEM region 0x%llx "
405 "unavailable. Cannot memory map device.\n",
406 ahc_get_pci_bus(ahc->dev_softc),
407 ahc_get_pci_slot(ahc->dev_softc),
408 ahc_get_pci_function(ahc->dev_softc),
409 (unsigned long long)base);
410 }
411
412
413
414
415 if (maddr == NULL) {
416
417 error = ahc_linux_pci_reserve_io_region(ahc, &base);
418 if (error == 0) {
419 ahc->tag = BUS_SPACE_PIO;
420 ahc->bsh.ioport = (u_long)base;
421 command |= PCIM_CMD_PORTEN;
422 } else {
423 printk("aic7xxx: PCI%d:%d:%d IO region 0x%llx[0..255] "
424 "unavailable. Cannot map device.\n",
425 ahc_get_pci_bus(ahc->dev_softc),
426 ahc_get_pci_slot(ahc->dev_softc),
427 ahc_get_pci_function(ahc->dev_softc),
428 (unsigned long long)base);
429 }
430 }
431 ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, 4);
432 return (error);
433}
434
435int
436ahc_pci_map_int(struct ahc_softc *ahc)
437{
438 int error;
439
440 error = request_irq(ahc->dev_softc->irq, ahc_linux_isr,
441 IRQF_SHARED, "aic7xxx", ahc);
442 if (error == 0)
443 ahc->platform_data->irq = ahc->dev_softc->irq;
444
445 return (-error);
446}
447
448
