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42#include "aic79xx_osm.h"
43#include "aic79xx_inline.h"
44#include "aic79xx_pci.h"
45
46
47
48#define ID(x) \
49 ID2C(x), \
50 ID2C(IDIROC(x))
51
52static const struct pci_device_id ahd_linux_pci_id_table[] = {
53
54 ID(ID_AHA_29320A),
55 ID(ID_AHA_29320ALP),
56 ID(ID_AHA_29320LPE),
57
58 ID(ID_AHA_29320),
59 ID(ID_AHA_29320B),
60 ID(ID_AHA_29320LP),
61 ID(ID_AHA_39320),
62 ID(ID_AHA_39320_B),
63 ID(ID_AHA_39320A),
64 ID(ID_AHA_39320D),
65 ID(ID_AHA_39320D_HP),
66 ID(ID_AHA_39320D_B),
67 ID(ID_AHA_39320D_B_HP),
68
69 ID16(ID_AIC7901 & ID_9005_GENERIC_MASK),
70 ID(ID_AIC7901A & ID_DEV_VENDOR_MASK),
71 ID16(ID_AIC7902 & ID_9005_GENERIC_MASK),
72 { 0 }
73};
74
75MODULE_DEVICE_TABLE(pci, ahd_linux_pci_id_table);
76
77static int __maybe_unused
78ahd_linux_pci_dev_suspend(struct device *dev)
79{
80 struct ahd_softc *ahd = dev_get_drvdata(dev);
81 int rc;
82
83 if ((rc = ahd_suspend(ahd)))
84 return rc;
85
86 ahd_pci_suspend(ahd);
87
88 return rc;
89}
90
91static int __maybe_unused
92ahd_linux_pci_dev_resume(struct device *dev)
93{
94 struct ahd_softc *ahd = dev_get_drvdata(dev);
95
96 ahd_pci_resume(ahd);
97
98 ahd_resume(ahd);
99
100 return 0;
101}
102
103static void
104ahd_linux_pci_dev_remove(struct pci_dev *pdev)
105{
106 struct ahd_softc *ahd = pci_get_drvdata(pdev);
107 u_long s;
108
109 if (ahd->platform_data && ahd->platform_data->host)
110 scsi_remove_host(ahd->platform_data->host);
111
112 ahd_lock(ahd, &s);
113 ahd_intr_enable(ahd, FALSE);
114 ahd_unlock(ahd, &s);
115 ahd_free(ahd);
116}
117
118static void
119ahd_linux_pci_inherit_flags(struct ahd_softc *ahd)
120{
121 struct pci_dev *pdev = ahd->dev_softc, *master_pdev;
122 unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0);
123
124 master_pdev = pci_get_slot(pdev->bus, master_devfn);
125 if (master_pdev) {
126 struct ahd_softc *master = pci_get_drvdata(master_pdev);
127 if (master) {
128 ahd->flags &= ~AHD_BIOS_ENABLED;
129 ahd->flags |= master->flags & AHD_BIOS_ENABLED;
130 } else
131 printk(KERN_ERR "aic79xx: no multichannel peer found!\n");
132 pci_dev_put(master_pdev);
133 }
134}
135
136static int
137ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
138{
139 char buf[80];
140 struct ahd_softc *ahd;
141 ahd_dev_softc_t pci;
142 const struct ahd_pci_identity *entry;
143 char *name;
144 int error;
145 struct device *dev = &pdev->dev;
146
147 pci = pdev;
148 entry = ahd_find_pci_device(pci);
149 if (entry == NULL)
150 return (-ENODEV);
151
152
153
154
155
156
157 sprintf(buf, "ahd_pci:%d:%d:%d",
158 ahd_get_pci_bus(pci),
159 ahd_get_pci_slot(pci),
160 ahd_get_pci_function(pci));
161 name = kstrdup(buf, GFP_ATOMIC);
162 if (name == NULL)
163 return (-ENOMEM);
164 ahd = ahd_alloc(NULL, name);
165 if (ahd == NULL)
166 return (-ENOMEM);
167 if (pci_enable_device(pdev)) {
168 ahd_free(ahd);
169 return (-ENODEV);
170 }
171 pci_set_master(pdev);
172
173 if (sizeof(dma_addr_t) > 4) {
174 const u64 required_mask = dma_get_required_mask(dev);
175
176 if (required_mask > DMA_BIT_MASK(39) &&
177 dma_set_mask(dev, DMA_BIT_MASK(64)) == 0)
178 ahd->flags |= AHD_64BIT_ADDRESSING;
179 else if (required_mask > DMA_BIT_MASK(32) &&
180 dma_set_mask(dev, DMA_BIT_MASK(39)) == 0)
181 ahd->flags |= AHD_39BIT_ADDRESSING;
182 else
183 dma_set_mask(dev, DMA_BIT_MASK(32));
184 } else {
185 dma_set_mask(dev, DMA_BIT_MASK(32));
186 }
187 ahd->dev_softc = pci;
188 error = ahd_pci_config(ahd, entry);
189 if (error != 0) {
190 ahd_free(ahd);
191 return (-error);
192 }
193
194
195
196
197
198 if ((ahd->features & AHD_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
199 ahd_linux_pci_inherit_flags(ahd);
200
201 pci_set_drvdata(pdev, ahd);
202
203 ahd_linux_register_host(ahd, &aic79xx_driver_template);
204 return (0);
205}
206
207static SIMPLE_DEV_PM_OPS(ahd_linux_pci_dev_pm_ops,
208 ahd_linux_pci_dev_suspend,
209 ahd_linux_pci_dev_resume);
210
211static struct pci_driver aic79xx_pci_driver = {
212 .name = "aic79xx",
213 .probe = ahd_linux_pci_dev_probe,
214 .driver.pm = &ahd_linux_pci_dev_pm_ops,
215 .remove = ahd_linux_pci_dev_remove,
216 .id_table = ahd_linux_pci_id_table
217};
218
219int
220ahd_linux_pci_init(void)
221{
222 return pci_register_driver(&aic79xx_pci_driver);
223}
224
225void
226ahd_linux_pci_exit(void)
227{
228 pci_unregister_driver(&aic79xx_pci_driver);
229}
230
231static int
232ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, resource_size_t *base,
233 resource_size_t *base2)
234{
235 *base = pci_resource_start(ahd->dev_softc, 0);
236
237
238
239
240
241 *base2 = pci_resource_start(ahd->dev_softc, 3);
242 if (*base == 0 || *base2 == 0)
243 return (ENOMEM);
244 if (!request_region(*base, 256, "aic79xx"))
245 return (ENOMEM);
246 if (!request_region(*base2, 256, "aic79xx")) {
247 release_region(*base, 256);
248 return (ENOMEM);
249 }
250 return (0);
251}
252
253static int
254ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd,
255 resource_size_t *bus_addr,
256 uint8_t __iomem **maddr)
257{
258 resource_size_t start;
259 resource_size_t base_page;
260 u_long base_offset;
261 int error = 0;
262
263 if (aic79xx_allow_memio == 0)
264 return (ENOMEM);
265
266 if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) != 0)
267 return (ENOMEM);
268
269 start = pci_resource_start(ahd->dev_softc, 1);
270 base_page = start & PAGE_MASK;
271 base_offset = start - base_page;
272 if (start != 0) {
273 *bus_addr = start;
274 if (!request_mem_region(start, 0x1000, "aic79xx"))
275 error = ENOMEM;
276 if (!error) {
277 *maddr = ioremap(base_page, base_offset + 512);
278 if (*maddr == NULL) {
279 error = ENOMEM;
280 release_mem_region(start, 0x1000);
281 } else
282 *maddr += base_offset;
283 }
284 } else
285 error = ENOMEM;
286 return (error);
287}
288
289int
290ahd_pci_map_registers(struct ahd_softc *ahd)
291{
292 uint32_t command;
293 resource_size_t base;
294 uint8_t __iomem *maddr;
295 int error;
296
297
298
299
300 command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, 4);
301 command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
302 base = 0;
303 maddr = NULL;
304 error = ahd_linux_pci_reserve_mem_region(ahd, &base, &maddr);
305 if (error == 0) {
306 ahd->platform_data->mem_busaddr = base;
307 ahd->tags[0] = BUS_SPACE_MEMIO;
308 ahd->bshs[0].maddr = maddr;
309 ahd->tags[1] = BUS_SPACE_MEMIO;
310 ahd->bshs[1].maddr = maddr + 0x100;
311 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
312 command | PCIM_CMD_MEMEN, 4);
313
314 if (ahd_pci_test_register_access(ahd) != 0) {
315
316 printk("aic79xx: PCI Device %d:%d:%d "
317 "failed memory mapped test. Using PIO.\n",
318 ahd_get_pci_bus(ahd->dev_softc),
319 ahd_get_pci_slot(ahd->dev_softc),
320 ahd_get_pci_function(ahd->dev_softc));
321 iounmap(maddr);
322 release_mem_region(ahd->platform_data->mem_busaddr,
323 0x1000);
324 ahd->bshs[0].maddr = NULL;
325 maddr = NULL;
326 } else
327 command |= PCIM_CMD_MEMEN;
328 } else if (bootverbose) {
329 printk("aic79xx: PCI%d:%d:%d MEM region 0x%llx "
330 "unavailable. Cannot memory map device.\n",
331 ahd_get_pci_bus(ahd->dev_softc),
332 ahd_get_pci_slot(ahd->dev_softc),
333 ahd_get_pci_function(ahd->dev_softc),
334 (unsigned long long)base);
335 }
336
337 if (maddr == NULL) {
338 resource_size_t base2;
339
340 error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2);
341 if (error == 0) {
342 ahd->tags[0] = BUS_SPACE_PIO;
343 ahd->tags[1] = BUS_SPACE_PIO;
344 ahd->bshs[0].ioport = (u_long)base;
345 ahd->bshs[1].ioport = (u_long)base2;
346 command |= PCIM_CMD_PORTEN;
347 } else {
348 printk("aic79xx: PCI%d:%d:%d IO regions 0x%llx and "
349 "0x%llx unavailable. Cannot map device.\n",
350 ahd_get_pci_bus(ahd->dev_softc),
351 ahd_get_pci_slot(ahd->dev_softc),
352 ahd_get_pci_function(ahd->dev_softc),
353 (unsigned long long)base,
354 (unsigned long long)base2);
355 }
356 }
357 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4);
358 return (error);
359}
360
361int
362ahd_pci_map_int(struct ahd_softc *ahd)
363{
364 int error;
365
366 error = request_irq(ahd->dev_softc->irq, ahd_linux_isr,
367 IRQF_SHARED, "aic79xx", ahd);
368 if (!error)
369 ahd->platform_data->irq = ahd->dev_softc->irq;
370
371 return (-error);
372}
373
374void
375ahd_power_state_change(struct ahd_softc *ahd, ahd_power_state new_state)
376{
377 pci_set_power_state(ahd->dev_softc, new_state);
378}
379
