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13#include <common.h>
14#include <dm.h>
15#include <errno.h>
16#include <pci.h>
17#include <asm/io.h>
18
19const char *pci_class_str(u8 class)
20{
21 switch (class) {
22 case PCI_CLASS_NOT_DEFINED:
23 return "Build before PCI Rev2.0";
24 break;
25 case PCI_BASE_CLASS_STORAGE:
26 return "Mass storage controller";
27 break;
28 case PCI_BASE_CLASS_NETWORK:
29 return "Network controller";
30 break;
31 case PCI_BASE_CLASS_DISPLAY:
32 return "Display controller";
33 break;
34 case PCI_BASE_CLASS_MULTIMEDIA:
35 return "Multimedia device";
36 break;
37 case PCI_BASE_CLASS_MEMORY:
38 return "Memory controller";
39 break;
40 case PCI_BASE_CLASS_BRIDGE:
41 return "Bridge device";
42 break;
43 case PCI_BASE_CLASS_COMMUNICATION:
44 return "Simple comm. controller";
45 break;
46 case PCI_BASE_CLASS_SYSTEM:
47 return "Base system peripheral";
48 break;
49 case PCI_BASE_CLASS_INPUT:
50 return "Input device";
51 break;
52 case PCI_BASE_CLASS_DOCKING:
53 return "Docking station";
54 break;
55 case PCI_BASE_CLASS_PROCESSOR:
56 return "Processor";
57 break;
58 case PCI_BASE_CLASS_SERIAL:
59 return "Serial bus controller";
60 break;
61 case PCI_BASE_CLASS_INTELLIGENT:
62 return "Intelligent controller";
63 break;
64 case PCI_BASE_CLASS_SATELLITE:
65 return "Satellite controller";
66 break;
67 case PCI_BASE_CLASS_CRYPT:
68 return "Cryptographic device";
69 break;
70 case PCI_BASE_CLASS_SIGNAL_PROCESSING:
71 return "DSP";
72 break;
73 case PCI_CLASS_OTHERS:
74 return "Does not fit any class";
75 break;
76 default:
77 return "???";
78 break;
79 };
80}
81
82__weak int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
83{
84
85
86
87 if (dev == PCI_BDF(hose->first_busno, 0, 0)) {
88#if defined(CONFIG_PCI_CONFIG_HOST_BRIDGE)
89
90
91
92 if (getenv("pciconfighost") == NULL)
93 return 1;
94#else
95 return 1;
96#endif
97 }
98
99 return 0;
100}
101
102#if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
103
104void *pci_map_bar(pci_dev_t pdev, int bar, int flags)
105{
106 pci_addr_t pci_bus_addr;
107 u32 bar_response;
108
109
110 pci_read_config_dword(pdev, bar, &bar_response);
111 pci_bus_addr = (pci_addr_t)(bar_response & ~0xf);
112
113
114
115
116
117
118
119 return pci_bus_to_virt(pdev, pci_bus_addr, flags, 0, MAP_NOCACHE);
120}
121
122void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum,
123 u32 addr_and_ctrl)
124{
125 int bar;
126
127 bar = PCI_BASE_ADDRESS_0 + barnum * 4;
128 pci_hose_write_config_dword(hose, dev, bar, addr_and_ctrl);
129}
130
131u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum)
132{
133 u32 addr;
134 int bar;
135
136 bar = PCI_BASE_ADDRESS_0 + barnum * 4;
137 pci_hose_read_config_dword(hose, dev, bar, &addr);
138 if (addr & PCI_BASE_ADDRESS_SPACE_IO)
139 return addr & PCI_BASE_ADDRESS_IO_MASK;
140 else
141 return addr & PCI_BASE_ADDRESS_MEM_MASK;
142}
143
144int __pci_hose_bus_to_phys(struct pci_controller *hose,
145 pci_addr_t bus_addr,
146 unsigned long flags,
147 unsigned long skip_mask,
148 phys_addr_t *pa)
149{
150 struct pci_region *res;
151 int i;
152
153 for (i = 0; i < hose->region_count; i++) {
154 res = &hose->regions[i];
155
156 if (((res->flags ^ flags) & PCI_REGION_TYPE) != 0)
157 continue;
158
159 if (res->flags & skip_mask)
160 continue;
161
162 if (bus_addr >= res->bus_start &&
163 (bus_addr - res->bus_start) < res->size) {
164 *pa = (bus_addr - res->bus_start + res->phys_start);
165 return 0;
166 }
167 }
168
169 return 1;
170}
171
172phys_addr_t pci_hose_bus_to_phys(struct pci_controller *hose,
173 pci_addr_t bus_addr,
174 unsigned long flags)
175{
176 phys_addr_t phys_addr = 0;
177 int ret;
178
179 if (!hose) {
180 puts("pci_hose_bus_to_phys: invalid hose\n");
181 return phys_addr;
182 }
183
184#ifdef CONFIG_DM_PCI
185
186 hose = pci_bus_to_hose(0);
187#endif
188
189
190
191
192
193 if ((flags & PCI_REGION_TYPE) == PCI_REGION_MEM) {
194 ret = __pci_hose_bus_to_phys(hose, bus_addr,
195 flags, PCI_REGION_SYS_MEMORY, &phys_addr);
196 if (!ret)
197 return phys_addr;
198 }
199
200 ret = __pci_hose_bus_to_phys(hose, bus_addr, flags, 0, &phys_addr);
201
202 if (ret)
203 puts("pci_hose_bus_to_phys: invalid physical address\n");
204
205 return phys_addr;
206}
207
208int __pci_hose_phys_to_bus(struct pci_controller *hose,
209 phys_addr_t phys_addr,
210 unsigned long flags,
211 unsigned long skip_mask,
212 pci_addr_t *ba)
213{
214 struct pci_region *res;
215 pci_addr_t bus_addr;
216 int i;
217
218 for (i = 0; i < hose->region_count; i++) {
219 res = &hose->regions[i];
220
221 if (((res->flags ^ flags) & PCI_REGION_TYPE) != 0)
222 continue;
223
224 if (res->flags & skip_mask)
225 continue;
226
227 bus_addr = phys_addr - res->phys_start + res->bus_start;
228
229 if (bus_addr >= res->bus_start &&
230 (bus_addr - res->bus_start) < res->size) {
231 *ba = bus_addr;
232 return 0;
233 }
234 }
235
236 return 1;
237}
238
239pci_addr_t pci_hose_phys_to_bus(struct pci_controller *hose,
240 phys_addr_t phys_addr,
241 unsigned long flags)
242{
243 pci_addr_t bus_addr = 0;
244 int ret;
245
246 if (!hose) {
247 puts("pci_hose_phys_to_bus: invalid hose\n");
248 return bus_addr;
249 }
250
251#ifdef CONFIG_DM_PCI
252
253 hose = pci_bus_to_hose(0);
254#endif
255
256
257
258
259
260 if ((flags & PCI_REGION_TYPE) == PCI_REGION_MEM) {
261 ret = __pci_hose_phys_to_bus(hose, phys_addr,
262 flags, PCI_REGION_SYS_MEMORY, &bus_addr);
263 if (!ret)
264 return bus_addr;
265 }
266
267 ret = __pci_hose_phys_to_bus(hose, phys_addr, flags, 0, &bus_addr);
268
269 if (ret)
270 puts("pci_hose_phys_to_bus: invalid physical address\n");
271
272 return bus_addr;
273}
274
275pci_dev_t pci_find_device(unsigned int vendor, unsigned int device, int index)
276{
277 struct pci_device_id ids[2] = { {}, {0, 0} };
278
279 ids[0].vendor = vendor;
280 ids[0].device = device;
281
282 return pci_find_devices(ids, index);
283}
284
285pci_dev_t pci_hose_find_devices(struct pci_controller *hose, int busnum,
286 struct pci_device_id *ids, int *indexp)
287{
288 int found_multi = 0;
289 u16 vendor, device;
290 u8 header_type;
291 pci_dev_t bdf;
292 int i;
293
294 for (bdf = PCI_BDF(busnum, 0, 0);
295 bdf < PCI_BDF(busnum + 1, 0, 0);
296 bdf += PCI_BDF(0, 0, 1)) {
297 if (pci_skip_dev(hose, bdf))
298 continue;
299
300 if (!PCI_FUNC(bdf)) {
301 pci_read_config_byte(bdf, PCI_HEADER_TYPE,
302 &header_type);
303 found_multi = header_type & 0x80;
304 } else {
305 if (!found_multi)
306 continue;
307 }
308
309 pci_read_config_word(bdf, PCI_VENDOR_ID, &vendor);
310 pci_read_config_word(bdf, PCI_DEVICE_ID, &device);
311
312 for (i = 0; ids[i].vendor != 0; i++) {
313 if (vendor == ids[i].vendor &&
314 device == ids[i].device) {
315 if ((*indexp) <= 0)
316 return bdf;
317
318 (*indexp)--;
319 }
320 }
321 }
322
323 return -1;
324}
325
326pci_dev_t pci_find_class(uint find_class, int index)
327{
328 int bus;
329 int devnum;
330 pci_dev_t bdf;
331 uint32_t class;
332
333 for (bus = 0; bus <= pci_last_busno(); bus++) {
334 for (devnum = 0; devnum < PCI_MAX_PCI_DEVICES - 1; devnum++) {
335 pci_read_config_dword(PCI_BDF(bus, devnum, 0),
336 PCI_CLASS_REVISION, &class);
337 if (class >> 16 == 0xffff)
338 continue;
339
340 for (bdf = PCI_BDF(bus, devnum, 0);
341 bdf <= PCI_BDF(bus, devnum,
342 PCI_MAX_PCI_FUNCTIONS - 1);
343 bdf += PCI_BDF(0, 0, 1)) {
344 pci_read_config_dword(bdf, PCI_CLASS_REVISION,
345 &class);
346 class >>= 8;
347
348 if (class != find_class)
349 continue;
350
351
352
353
354
355 if (index) {
356 index--;
357 continue;
358 }
359
360 return bdf;
361 }
362 }
363 }
364
365 return -ENODEV;
366}
367#endif
368