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1 /*
2 * (C) Copyright 2000
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7 /* PCI.c - PCI functions */
8
9
10 #include <common.h>
11 #ifdef CONFIG_PCI
12 #include <pci.h>
13
14 #include "../../Marvell/include/pci.h"
15
16 #undef DEBUG
17 #undef IDE_SET_NATIVE_MODE
18 static unsigned int local_buses[] = { 0, 0 };
19
20 static const unsigned char pci_irq_swizzle[2][PCI_MAX_DEVICES] = {
21 {0, 0, 0, 0, 0, 0, 0, 27, 27, [9 ... PCI_MAX_DEVICES - 1] = 0 },
22 {0, 0, 0, 0, 0, 0, 0, 29, 29, [9 ... PCI_MAX_DEVICES - 1] = 0 },
23 };
24
25 #ifdef CONFIG_USE_CPCIDVI
26 typedef struct {
27 unsigned int base;
28 unsigned int init;
29 } GT_CPCIDVI_ROM_T;
30
31 static GT_CPCIDVI_ROM_T gt_cpcidvi_rom = {0, 0};
32 #endif
33
34 #ifdef DEBUG
35 static const unsigned int pci_bus_list[] = { PCI_0_MODE, PCI_1_MODE };
36 static void gt_pci_bus_mode_display (PCI_HOST host)
37 {
38 unsigned int mode;
39
40
41 mode = (GTREGREAD (pci_bus_list[host]) & (BIT4 | BIT5)) >> 4;
42 switch (mode) {
43 case 0:
44 printf ("PCI %d bus mode: Conventional PCI\n", host);
45 break;
46 case 1:
47 printf ("PCI %d bus mode: 66 MHz PCIX\n", host);
48 break;
49 case 2:
50 printf ("PCI %d bus mode: 100 MHz PCIX\n", host);
51 break;
52 case 3:
53 printf ("PCI %d bus mode: 133 MHz PCIX\n", host);
54 break;
55 default:
56 printf ("Unknown BUS %d\n", mode);
57 }
58 }
59 #endif
60
61 static const unsigned int pci_p2p_configuration_reg[] = {
62 PCI_0P2P_CONFIGURATION, PCI_1P2P_CONFIGURATION
63 };
64
65 static const unsigned int pci_configuration_address[] = {
66 PCI_0CONFIGURATION_ADDRESS, PCI_1CONFIGURATION_ADDRESS
67 };
68
69 static const unsigned int pci_configuration_data[] = {
70 PCI_0CONFIGURATION_DATA_VIRTUAL_REGISTER,
71 PCI_1CONFIGURATION_DATA_VIRTUAL_REGISTER
72 };
73
74 static const unsigned int pci_error_cause_reg[] = {
75 PCI_0ERROR_CAUSE, PCI_1ERROR_CAUSE
76 };
77
78 static const unsigned int pci_arbiter_control[] = {
79 PCI_0ARBITER_CONTROL, PCI_1ARBITER_CONTROL
80 };
81
82 static const unsigned int pci_address_space_en[] = {
83 PCI_0_BASE_ADDR_REG_ENABLE, PCI_1_BASE_ADDR_REG_ENABLE
84 };
85
86 static const unsigned int pci_snoop_control_base_0_low[] = {
87 PCI_0SNOOP_CONTROL_BASE_0_LOW, PCI_1SNOOP_CONTROL_BASE_0_LOW
88 };
89 static const unsigned int pci_snoop_control_top_0[] = {
90 PCI_0SNOOP_CONTROL_TOP_0, PCI_1SNOOP_CONTROL_TOP_0
91 };
92
93 static const unsigned int pci_access_control_base_0_low[] = {
94 PCI_0ACCESS_CONTROL_BASE_0_LOW, PCI_1ACCESS_CONTROL_BASE_0_LOW
95 };
96 static const unsigned int pci_access_control_top_0[] = {
97 PCI_0ACCESS_CONTROL_TOP_0, PCI_1ACCESS_CONTROL_TOP_0
98 };
99
100 static const unsigned int pci_scs_bank_size[2][4] = {
101 {PCI_0SCS_0_BANK_SIZE, PCI_0SCS_1_BANK_SIZE,
102 PCI_0SCS_2_BANK_SIZE, PCI_0SCS_3_BANK_SIZE},
103 {PCI_1SCS_0_BANK_SIZE, PCI_1SCS_1_BANK_SIZE,
104 PCI_1SCS_2_BANK_SIZE, PCI_1SCS_3_BANK_SIZE}
105 };
106
107 static const unsigned int pci_p2p_configuration[] = {
108 PCI_0P2P_CONFIGURATION, PCI_1P2P_CONFIGURATION
109 };
110
111
112 /********************************************************************
113 * pciWriteConfigReg - Write to a PCI configuration register
114 * - Make sure the GT is configured as a master before writing
115 * to another device on the PCI.
116 * - The function takes care of Big/Little endian conversion.
117 *
118 *
119 * Inputs: unsigned int regOffset: The register offset as it apears in the GT spec
120 * (or any other PCI device spec)
121 * pciDevNum: The device number needs to be addressed.
122 *
123 * Configuration Address 0xCF8:
124 *
125 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
126 * |congif|Reserved| Bus |Device|Function|Register|00|
127 * |Enable| |Number|Number| Number | Number | | <=field Name
128 *
129 *********************************************************************/
130 void pciWriteConfigReg (PCI_HOST host, unsigned int regOffset,
131 unsigned int pciDevNum, unsigned int data)
132 {
133 volatile unsigned int DataForAddrReg;
134 unsigned int functionNum;
135 unsigned int busNum = 0;
136 unsigned int addr;
137
138 if (pciDevNum > 32) /* illegal device Number */
139 return;
140 if (pciDevNum == SELF) { /* configure our configuration space. */
141 pciDevNum =
142 (GTREGREAD (pci_p2p_configuration_reg[host]) >> 24) &
143 0x1f;
144 busNum = GTREGREAD (pci_p2p_configuration_reg[host]) &
145 0xff0000;
146 }
147 functionNum = regOffset & 0x00000700;
148 pciDevNum = pciDevNum << 11;
149 regOffset = regOffset & 0xfc;
150 DataForAddrReg =
151 (regOffset | pciDevNum | functionNum | busNum) | BIT31;
152 GT_REG_WRITE (pci_configuration_address[host], DataForAddrReg);
153 GT_REG_READ (pci_configuration_address[host], &addr);
154 if (addr != DataForAddrReg)
155 return;
156 GT_REG_WRITE (pci_configuration_data[host], data);
157 }
158
159 /********************************************************************
160 * pciReadConfigReg - Read from a PCI0 configuration register
161 * - Make sure the GT is configured as a master before reading
162 * from another device on the PCI.
163 * - The function takes care of Big/Little endian conversion.
164 * INPUTS: regOffset: The register offset as it apears in the GT spec (or PCI
165 * spec)
166 * pciDevNum: The device number needs to be addressed.
167 * RETURNS: data , if the data == 0xffffffff check the master abort bit in the
168 * cause register to make sure the data is valid
169 *
170 * Configuration Address 0xCF8:
171 *
172 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
173 * |congif|Reserved| Bus |Device|Function|Register|00|
174 * |Enable| |Number|Number| Number | Number | | <=field Name
175 *
176 *********************************************************************/
177 unsigned int pciReadConfigReg (PCI_HOST host, unsigned int regOffset,
178 unsigned int pciDevNum)
179 {
180 volatile unsigned int DataForAddrReg;
181 unsigned int data;
182 unsigned int functionNum;
183 unsigned int busNum = 0;
184
185 if (pciDevNum > 32) /* illegal device Number */
186 return 0xffffffff;
187 if (pciDevNum == SELF) { /* configure our configuration space. */
188 pciDevNum =
189 (GTREGREAD (pci_p2p_configuration_reg[host]) >> 24) &
190 0x1f;
191 busNum = GTREGREAD (pci_p2p_configuration_reg[host]) &
192 0xff0000;
193 }
194 functionNum = regOffset & 0x00000700;
195 pciDevNum = pciDevNum << 11;
196 regOffset = regOffset & 0xfc;
197 DataForAddrReg =
198 (regOffset | pciDevNum | functionNum | busNum) | BIT31;
199 GT_REG_WRITE (pci_configuration_address[host], DataForAddrReg);
200 GT_REG_READ (pci_configuration_address[host], &data);
201 if (data != DataForAddrReg)
202 return 0xffffffff;
203 GT_REG_READ (pci_configuration_data[host], &data);
204 return data;
205 }
206
207 /********************************************************************
208 * pciOverBridgeWriteConfigReg - Write to a PCI configuration register where
209 * the agent is placed on another Bus. For more
210 * information read P2P in the PCI spec.
211 *
212 * Inputs: unsigned int regOffset - The register offset as it apears in the
213 * GT spec (or any other PCI device spec).
214 * unsigned int pciDevNum - The device number needs to be addressed.
215 * unsigned int busNum - On which bus does the Target agent connect
216 * to.
217 * unsigned int data - data to be written.
218 *
219 * Configuration Address 0xCF8:
220 *
221 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
222 * |congif|Reserved| Bus |Device|Function|Register|01|
223 * |Enable| |Number|Number| Number | Number | | <=field Name
224 *
225 * The configuration Address is configure as type-I (bits[1:0] = '01') due to
226 * PCI spec referring to P2P.
227 *
228 *********************************************************************/
229 void pciOverBridgeWriteConfigReg (PCI_HOST host,
230 unsigned int regOffset,
231 unsigned int pciDevNum,
232 unsigned int busNum, unsigned int data)
233 {
234 unsigned int DataForReg;
235 unsigned int functionNum;
236
237 functionNum = regOffset & 0x00000700;
238 pciDevNum = pciDevNum << 11;
239 regOffset = regOffset & 0xff;
240 busNum = busNum << 16;
241 if (pciDevNum == SELF) { /* This board */
242 DataForReg = (regOffset | pciDevNum | functionNum) | BIT0;
243 } else {
244 DataForReg = (regOffset | pciDevNum | functionNum | busNum) |
245 BIT31 | BIT0;
246 }
247 GT_REG_WRITE (pci_configuration_address[host], DataForReg);
248 GT_REG_WRITE (pci_configuration_data[host], data);
249 }
250
251
252 /********************************************************************
253 * pciOverBridgeReadConfigReg - Read from a PCIn configuration register where
254 * the agent target locate on another PCI bus.
255 * - Make sure the GT is configured as a master
256 * before reading from another device on the PCI.
257 * - The function takes care of Big/Little endian
258 * conversion.
259 * INPUTS: regOffset: The register offset as it apears in the GT spec (or PCI
260 * spec). (configuration register offset.)
261 * pciDevNum: The device number needs to be addressed.
262 * busNum: the Bus number where the agent is place.
263 * RETURNS: data , if the data == 0xffffffff check the master abort bit in the
264 * cause register to make sure the data is valid
265 *
266 * Configuration Address 0xCF8:
267 *
268 * 31 30 24 23 16 15 11 10 8 7 2 0 <=bit Number
269 * |congif|Reserved| Bus |Device|Function|Register|01|
270 * |Enable| |Number|Number| Number | Number | | <=field Name
271 *
272 *********************************************************************/
273 unsigned int pciOverBridgeReadConfigReg (PCI_HOST host,
274 unsigned int regOffset,
275 unsigned int pciDevNum,
276 unsigned int busNum)
277 {
278 unsigned int DataForReg;
279 unsigned int data;
280 unsigned int functionNum;
281
282 functionNum = regOffset & 0x00000700;
283 pciDevNum = pciDevNum << 11;
284 regOffset = regOffset & 0xff;
285 busNum = busNum << 16;
286 if (pciDevNum == SELF) { /* This board */
287 DataForReg = (regOffset | pciDevNum | functionNum) | BIT31;
288 } else { /* agent on another bus */
289
290 DataForReg = (regOffset | pciDevNum | functionNum | busNum) |
291 BIT0 | BIT31;
292 }
293 GT_REG_WRITE (pci_configuration_address[host], DataForReg);
294 GT_REG_READ (pci_configuration_data[host], &data);
295 return data;
296 }
297
298
299 /********************************************************************
300 * pciGetRegOffset - Gets the register offset for this region config.
301 *
302 * INPUT: Bus, Region - The bus and region we ask for its base address.
303 * OUTPUT: N/A
304 * RETURNS: PCI register base address
305 *********************************************************************/
306 static unsigned int pciGetRegOffset (PCI_HOST host, PCI_REGION region)
307 {
308 switch (host) {
309 case PCI_HOST0:
310 switch (region) {
311 case PCI_IO:
312 return PCI_0I_O_LOW_DECODE_ADDRESS;
313 case PCI_REGION0:
314 return PCI_0MEMORY0_LOW_DECODE_ADDRESS;
315 case PCI_REGION1:
316 return PCI_0MEMORY1_LOW_DECODE_ADDRESS;
317 case PCI_REGION2:
318 return PCI_0MEMORY2_LOW_DECODE_ADDRESS;
319 case PCI_REGION3:
320 return PCI_0MEMORY3_LOW_DECODE_ADDRESS;
321 }
322 case PCI_HOST1:
323 switch (region) {
324 case PCI_IO:
325 return PCI_1I_O_LOW_DECODE_ADDRESS;
326 case PCI_REGION0:
327 return PCI_1MEMORY0_LOW_DECODE_ADDRESS;
328 case PCI_REGION1:
329 return PCI_1MEMORY1_LOW_DECODE_ADDRESS;
330 case PCI_REGION2:
331 return PCI_1MEMORY2_LOW_DECODE_ADDRESS;
332 case PCI_REGION3:
333 return PCI_1MEMORY3_LOW_DECODE_ADDRESS;
334 }
335 }
336 return PCI_0MEMORY0_LOW_DECODE_ADDRESS;
337 }
338
339 static unsigned int pciGetRemapOffset (PCI_HOST host, PCI_REGION region)
340 {
341 switch (host) {
342 case PCI_HOST0:
343 switch (region) {
344 case PCI_IO:
345 return PCI_0I_O_ADDRESS_REMAP;
346 case PCI_REGION0:
347 return PCI_0MEMORY0_ADDRESS_REMAP;
348 case PCI_REGION1:
349 return PCI_0MEMORY1_ADDRESS_REMAP;
350 case PCI_REGION2:
351 return PCI_0MEMORY2_ADDRESS_REMAP;
352 case PCI_REGION3:
353 return PCI_0MEMORY3_ADDRESS_REMAP;
354 }
355 case PCI_HOST1:
356 switch (region) {
357 case PCI_IO:
358 return PCI_1I_O_ADDRESS_REMAP;
359 case PCI_REGION0:
360 return PCI_1MEMORY0_ADDRESS_REMAP;
361 case PCI_REGION1:
362 return PCI_1MEMORY1_ADDRESS_REMAP;
363 case PCI_REGION2:
364 return PCI_1MEMORY2_ADDRESS_REMAP;
365 case PCI_REGION3:
366 return PCI_1MEMORY3_ADDRESS_REMAP;
367 }
368 }
369 return PCI_0MEMORY0_ADDRESS_REMAP;
370 }
371
372 /********************************************************************
373 * pciGetBaseAddress - Gets the base address of a PCI.
374 * - If the PCI size is 0 then this base address has no meaning!!!
375 *
376 *
377 * INPUT: Bus, Region - The bus and region we ask for its base address.
378 * OUTPUT: N/A
379 * RETURNS: PCI base address.
380 *********************************************************************/
381 unsigned int pciGetBaseAddress (PCI_HOST host, PCI_REGION region)
382 {
383 unsigned int regBase;
384 unsigned int regEnd;
385 unsigned int regOffset = pciGetRegOffset (host, region);
386
387 GT_REG_READ (regOffset, &regBase);
388 GT_REG_READ (regOffset + 8, &regEnd);
389
390 if (regEnd <= regBase)
391 return 0xffffffff; /* ERROR !!! */
392
393 regBase = regBase << 16;
394 return regBase;
395 }
396
397 bool pciMapSpace (PCI_HOST host, PCI_REGION region, unsigned int remapBase,
398 unsigned int bankBase, unsigned int bankLength)
399 {
400 unsigned int low = 0xfff;
401 unsigned int high = 0x0;
402 unsigned int regOffset = pciGetRegOffset (host, region);
403 unsigned int remapOffset = pciGetRemapOffset (host, region);
404
405 if (bankLength != 0) {
406 low = (bankBase >> 16) & 0xffff;
407 high = ((bankBase + bankLength) >> 16) - 1;
408 }
409
410 GT_REG_WRITE (regOffset, low | (1 << 24)); /* no swapping */
411 GT_REG_WRITE (regOffset + 8, high);
412
413 if (bankLength != 0) { /* must do AFTER writing maps */
414 GT_REG_WRITE (remapOffset, remapBase >> 16); /* sorry, 32 bits only.
415 dont support upper 32
416 in this driver */
417 }
418 return true;
419 }
420
421 unsigned int pciGetSpaceBase (PCI_HOST host, PCI_REGION region)
422 {
423 unsigned int low;
424 unsigned int regOffset = pciGetRegOffset (host, region);
425
426 GT_REG_READ (regOffset, &low);
427 return (low & 0xffff) << 16;
428 }
429
430 unsigned int pciGetSpaceSize (PCI_HOST host, PCI_REGION region)
431 {
432 unsigned int low, high;
433 unsigned int regOffset = pciGetRegOffset (host, region);
434
435 GT_REG_READ (regOffset, &low);
436 GT_REG_READ (regOffset + 8, &high);
437 return ((high & 0xffff) + 1) << 16;
438 }
439
440
441 /* ronen - 7/Dec/03*/
442 /********************************************************************
443 * gtPciDisable/EnableInternalBAR - This function enable/disable PCI BARS.
444 * Inputs: one of the PCI BAR
445 *********************************************************************/
446 void gtPciEnableInternalBAR (PCI_HOST host, PCI_INTERNAL_BAR pciBAR)
447 {
448 RESET_REG_BITS (pci_address_space_en[host], BIT0 << pciBAR);
449 }
450
451 void gtPciDisableInternalBAR (PCI_HOST host, PCI_INTERNAL_BAR pciBAR)
452 {
453 SET_REG_BITS (pci_address_space_en[host], BIT0 << pciBAR);
454 }
455
456 /********************************************************************
457 * pciMapMemoryBank - Maps PCI_host memory bank "bank" for the slave.
458 *
459 * Inputs: base and size of PCI SCS
460 *********************************************************************/
461 void pciMapMemoryBank (PCI_HOST host, MEMORY_BANK bank,
462 unsigned int pciDramBase, unsigned int pciDramSize)
463 {
464 /*ronen different function for 3rd bank. */
465 unsigned int offset = (bank < 2) ? bank * 8 : 0x100 + (bank - 2) * 8;
466
467 pciDramBase = pciDramBase & 0xfffff000;
468 pciDramBase = pciDramBase | (pciReadConfigReg (host,
469 PCI_SCS_0_BASE_ADDRESS
470 + offset,
471 SELF) & 0x00000fff);
472 pciWriteConfigReg (host, PCI_SCS_0_BASE_ADDRESS + offset, SELF,
473 pciDramBase);
474 if (pciDramSize == 0)
475 pciDramSize++;
476 GT_REG_WRITE (pci_scs_bank_size[host][bank], pciDramSize - 1);
477 gtPciEnableInternalBAR (host, bank);
478 }
479
480 /********************************************************************
481 * pciSetRegionFeatures - This function modifys one of the 8 regions with
482 * feature bits given as an input.
483 * - Be advised to check the spec before modifying them.
484 * Inputs: PCI_PROTECT_REGION region - one of the eight regions.
485 * unsigned int features - See file: pci.h there are defintion for those
486 * region features.
487 * unsigned int baseAddress - The region base Address.
488 * unsigned int topAddress - The region top Address.
489 * Returns: false if one of the parameters is erroneous true otherwise.
490 *********************************************************************/
491 bool pciSetRegionFeatures (PCI_HOST host, PCI_ACCESS_REGIONS region,
492 unsigned int features, unsigned int baseAddress,
493 unsigned int regionLength)
494 {
495 unsigned int accessLow;
496 unsigned int accessHigh;
497 unsigned int accessTop = baseAddress + regionLength;
498
499 if (regionLength == 0) { /* close the region. */
500 pciDisableAccessRegion (host, region);
501 return true;
502 }
503 /* base Address is store is bits [11:0] */
504 accessLow = (baseAddress & 0xfff00000) >> 20;
505 /* All the features are update according to the defines in pci.h (to be on
506 the safe side we disable bits: [11:0] */
507 accessLow = accessLow | (features & 0xfffff000);
508 /* write to the Low Access Region register */
509 GT_REG_WRITE (pci_access_control_base_0_low[host] + 0x10 * region,
510 accessLow);
511
512 accessHigh = (accessTop & 0xfff00000) >> 20;
513
514 /* write to the High Access Region register */
515 GT_REG_WRITE (pci_access_control_top_0[host] + 0x10 * region,
516 accessHigh - 1);
517 return true;
518 }
519
520 /********************************************************************
521 * pciDisableAccessRegion - Disable The given Region by writing MAX size
522 * to its low Address and MIN size to its high Address.
523 *
524 * Inputs: PCI_ACCESS_REGIONS region - The region we to be Disabled.
525 * Returns: N/A.
526 *********************************************************************/
527 void pciDisableAccessRegion (PCI_HOST host, PCI_ACCESS_REGIONS region)
528 {
529 /* writing back the registers default values. */
530 GT_REG_WRITE (pci_access_control_base_0_low[host] + 0x10 * region,
531 0x01001fff);
532 GT_REG_WRITE (pci_access_control_top_0[host] + 0x10 * region, 0);
533 }
534
535 /********************************************************************
536 * pciArbiterEnable - Enables PCI-0`s Arbitration mechanism.
537 *
538 * Inputs: N/A
539 * Returns: true.
540 *********************************************************************/
541 bool pciArbiterEnable (PCI_HOST host)
542 {
543 unsigned int regData;
544
545 GT_REG_READ (pci_arbiter_control[host], &regData);
546 GT_REG_WRITE (pci_arbiter_control[host], regData | BIT31);
547 return true;
548 }
549
550 /********************************************************************
551 * pciArbiterDisable - Disable PCI-0`s Arbitration mechanism.
552 *
553 * Inputs: N/A
554 * Returns: true
555 *********************************************************************/
556 bool pciArbiterDisable (PCI_HOST host)
557 {
558 unsigned int regData;
559
560 GT_REG_READ (pci_arbiter_control[host], &regData);
561 GT_REG_WRITE (pci_arbiter_control[host], regData & 0x7fffffff);
562 return true;
563 }
564
565 /********************************************************************
566 * pciSetArbiterAgentsPriority - Priority setup for the PCI agents (Hi or Low)
567 *
568 * Inputs: PCI_AGENT_PRIO internalAgent - priotity for internal agent.
569 * PCI_AGENT_PRIO externalAgent0 - priotity for external#0 agent.
570 * PCI_AGENT_PRIO externalAgent1 - priotity for external#1 agent.
571 * PCI_AGENT_PRIO externalAgent2 - priotity for external#2 agent.
572 * PCI_AGENT_PRIO externalAgent3 - priotity for external#3 agent.
573 * PCI_AGENT_PRIO externalAgent4 - priotity for external#4 agent.
574 * PCI_AGENT_PRIO externalAgent5 - priotity for external#5 agent.
575 * Returns: true
576 *********************************************************************/
577 bool pciSetArbiterAgentsPriority (PCI_HOST host, PCI_AGENT_PRIO internalAgent,
578 PCI_AGENT_PRIO externalAgent0,
579 PCI_AGENT_PRIO externalAgent1,
580 PCI_AGENT_PRIO externalAgent2,
581 PCI_AGENT_PRIO externalAgent3,
582 PCI_AGENT_PRIO externalAgent4,
583 PCI_AGENT_PRIO externalAgent5)
584 {
585 unsigned int regData;
586 unsigned int writeData;
587
588 GT_REG_READ (pci_arbiter_control[host], &regData);
589 writeData = (internalAgent << 7) + (externalAgent0 << 8) +
590 (externalAgent1 << 9) + (externalAgent2 << 10) +
591 (externalAgent3 << 11) + (externalAgent4 << 12) +
592 (externalAgent5 << 13);
593 regData = (regData & 0xffffc07f) | writeData;
594 GT_REG_WRITE (pci_arbiter_control[host], regData & regData);
595 return true;
596 }
597
598 /********************************************************************
599 * pciParkingDisable - Park on last option disable, with this function you can
600 * disable the park on last mechanism for each agent.
601 * disabling this option for all agents results parking
602 * on the internal master.
603 *
604 * Inputs: PCI_AGENT_PARK internalAgent - parking Disable for internal agent.
605 * PCI_AGENT_PARK externalAgent0 - parking Disable for external#0 agent.
606 * PCI_AGENT_PARK externalAgent1 - parking Disable for external#1 agent.
607 * PCI_AGENT_PARK externalAgent2 - parking Disable for external#2 agent.
608 * PCI_AGENT_PARK externalAgent3 - parking Disable for external#3 agent.
609 * PCI_AGENT_PARK externalAgent4 - parking Disable for external#4 agent.
610 * PCI_AGENT_PARK externalAgent5 - parking Disable for external#5 agent.
611 * Returns: true
612 *********************************************************************/
613 bool pciParkingDisable (PCI_HOST host, PCI_AGENT_PARK internalAgent,
614 PCI_AGENT_PARK externalAgent0,
615 PCI_AGENT_PARK externalAgent1,
616 PCI_AGENT_PARK externalAgent2,
617 PCI_AGENT_PARK externalAgent3,
618 PCI_AGENT_PARK externalAgent4,
619 PCI_AGENT_PARK externalAgent5)
620 {
621 unsigned int regData;
622 unsigned int writeData;
623
624 GT_REG_READ (pci_arbiter_control[host], &regData);
625 writeData = (internalAgent << 14) + (externalAgent0 << 15) +
626 (externalAgent1 << 16) + (externalAgent2 << 17) +
627 (externalAgent3 << 18) + (externalAgent4 << 19) +
628 (externalAgent5 << 20);
629 regData = (regData & ~(0x7f << 14)) | writeData;
630 GT_REG_WRITE (pci_arbiter_control[host], regData);
631 return true;
632 }
633
634 /********************************************************************
635 * pciEnableBrokenAgentDetection - A master is said to be broken if it fails to
636 * respond to grant assertion within a window specified in
637 * the input value: 'brokenValue'.
638 *
639 * Inputs: unsigned char brokenValue - A value which limits the Master to hold the
640 * grant without asserting frame.
641 * Returns: Error for illegal broken value otherwise true.
642 *********************************************************************/
643 bool pciEnableBrokenAgentDetection (PCI_HOST host, unsigned char brokenValue)
644 {
645 unsigned int data;
646 unsigned int regData;
647
648 if (brokenValue > 0xf)
649 return false; /* brokenValue must be 4 bit */
650 data = brokenValue << 3;
651 GT_REG_READ (pci_arbiter_control[host], &regData);
652 regData = (regData & 0xffffff87) | data;
653 GT_REG_WRITE (pci_arbiter_control[host], regData | BIT1);
654 return true;
655 }
656
657 /********************************************************************
658 * pciDisableBrokenAgentDetection - This function disable the Broken agent
659 * Detection mechanism.
660 * NOTE: This operation may cause a dead lock on the
661 * pci0 arbitration.
662 *
663 * Inputs: N/A
664 * Returns: true.
665 *********************************************************************/
666 bool pciDisableBrokenAgentDetection (PCI_HOST host)
667 {
668 unsigned int regData;
669
670 GT_REG_READ (pci_arbiter_control[host], &regData);
671 regData = regData & 0xfffffffd;
672 GT_REG_WRITE (pci_arbiter_control[host], regData);
673 return true;
674 }
675
676 /********************************************************************
677 * pciP2PConfig - This function set the PCI_n P2P configurate.
678 * For more information on the P2P read PCI spec.
679 *
680 * Inputs: unsigned int SecondBusLow - Secondery PCI interface Bus Range Lower
681 * Boundry.
682 * unsigned int SecondBusHigh - Secondry PCI interface Bus Range upper
683 * Boundry.
684 * unsigned int busNum - The CPI bus number to which the PCI interface
685 * is connected.
686 * unsigned int devNum - The PCI interface's device number.
687 *
688 * Returns: true.
689 *********************************************************************/
690 bool pciP2PConfig (PCI_HOST host, unsigned int SecondBusLow,
691 unsigned int SecondBusHigh,
692 unsigned int busNum, unsigned int devNum)
693 {
694 unsigned int regData;
695
696 regData = (SecondBusLow & 0xff) | ((SecondBusHigh & 0xff) << 8) |
697 ((busNum & 0xff) << 16) | ((devNum & 0x1f) << 24);
698 GT_REG_WRITE (pci_p2p_configuration[host], regData);
699 return true;
700 }
701
702 /********************************************************************
703 * pciSetRegionSnoopMode - This function modifys one of the 4 regions which
704 * supports Cache Coherency in the PCI_n interface.
705 * Inputs: region - One of the four regions.
706 * snoopType - There is four optional Types:
707 * 1. No Snoop.
708 * 2. Snoop to WT region.
709 * 3. Snoop to WB region.
710 * 4. Snoop & Invalidate to WB region.
711 * baseAddress - Base Address of this region.
712 * regionLength - Region length.
713 * Returns: false if one of the parameters is wrong otherwise return true.
714 *********************************************************************/
715 bool pciSetRegionSnoopMode (PCI_HOST host, PCI_SNOOP_REGION region,
716 PCI_SNOOP_TYPE snoopType,
717 unsigned int baseAddress,
718 unsigned int regionLength)
719 {
720 unsigned int snoopXbaseAddress;
721 unsigned int snoopXtopAddress;
722 unsigned int data;
723 unsigned int snoopHigh = baseAddress + regionLength;
724
725 if ((region > PCI_SNOOP_REGION3) || (snoopType > PCI_SNOOP_WB))
726 return false;
727 snoopXbaseAddress =
728 pci_snoop_control_base_0_low[host] + 0x10 * region;
729 snoopXtopAddress = pci_snoop_control_top_0[host] + 0x10 * region;
730 if (regionLength == 0) { /* closing the region */
731 GT_REG_WRITE (snoopXbaseAddress, 0x0000ffff);
732 GT_REG_WRITE (snoopXtopAddress, 0);
733 return true;
734 }
735 baseAddress = baseAddress & 0xfff00000; /* Granularity of 1MByte */
736 data = (baseAddress >> 20) | snoopType << 12;
737 GT_REG_WRITE (snoopXbaseAddress, data);
738 snoopHigh = (snoopHigh & 0xfff00000) >> 20;
739 GT_REG_WRITE (snoopXtopAddress, snoopHigh - 1);
740 return true;
741 }
742
743 static int gt_read_config_dword (struct pci_controller *hose,
744 pci_dev_t dev, int offset, u32 * value)
745 {
746 int bus = PCI_BUS (dev);
747
748 if ((bus == local_buses[0]) || (bus == local_buses[1])) {
749 *value = pciReadConfigReg ((PCI_HOST) hose->cfg_addr,
750 offset | (PCI_FUNC(dev) << 8),
751 PCI_DEV (dev));
752 } else {
753 *value = pciOverBridgeReadConfigReg ((PCI_HOST) hose->cfg_addr,
754 offset | (PCI_FUNC(dev) << 8),
755 PCI_DEV (dev), bus);
756 }
757
758 return 0;
759 }
760
761 static int gt_write_config_dword (struct pci_controller *hose,
762 pci_dev_t dev, int offset, u32 value)
763 {
764 int bus = PCI_BUS (dev);
765
766 if ((bus == local_buses[0]) || (bus == local_buses[1])) {
767 pciWriteConfigReg ((PCI_HOST) hose->cfg_addr,
768 offset | (PCI_FUNC(dev) << 8),
769 PCI_DEV (dev), value);
770 } else {
771 pciOverBridgeWriteConfigReg ((PCI_HOST) hose->cfg_addr,
772 offset | (PCI_FUNC(dev) << 8),
773 PCI_DEV (dev), bus,
774 value);
775 }
776 return 0;
777 }
778
779
780 static void gt_setup_ide (struct pci_controller *hose,
781 pci_dev_t dev, struct pci_config_table *entry)
782 {
783 static const int ide_bar[] = { 8, 4, 8, 4, 0, 0 };
784 u32 bar_response, bar_value;
785 int bar;
786
787 if (CPCI750_SLAVE_TEST != 0)
788 return;
789
790 for (bar = 0; bar < 6; bar++) {
791 /*ronen different function for 3rd bank. */
792 unsigned int offset =
793 (bar < 2) ? bar * 8 : 0x100 + (bar - 2) * 8;
794
795 pci_hose_write_config_dword (hose, dev, PCI_BASE_ADDRESS_0 + offset,
796 0x0);
797 pci_hose_read_config_dword (hose, dev, PCI_BASE_ADDRESS_0 + offset,
798 &bar_response);
799
800 pciauto_region_allocate (bar_response &
801 PCI_BASE_ADDRESS_SPACE_IO ? hose->
802 pci_io : hose->pci_mem, ide_bar[bar],
803 &bar_value);
804
805 pci_hose_write_config_dword (hose, dev, PCI_BASE_ADDRESS_0 + bar * 4,
806 bar_value);
807 }
808 }
809
810 #ifdef CONFIG_USE_CPCIDVI
811 static void gt_setup_cpcidvi (struct pci_controller *hose,
812 pci_dev_t dev, struct pci_config_table *entry)
813 {
814 u32 bar_value, pci_response;
815
816 if (CPCI750_SLAVE_TEST != 0)
817 return;
818
819 pci_hose_read_config_dword (hose, dev, PCI_COMMAND, &pci_response);
820 pci_hose_write_config_dword (hose, dev, PCI_BASE_ADDRESS_0, 0xffffffff);
821 pci_hose_read_config_dword (hose, dev, PCI_BASE_ADDRESS_0, &pci_response);
822 pciauto_region_allocate (hose->pci_mem, 0x01000000, &bar_value);
823 pci_hose_write_config_dword (hose, dev, PCI_BASE_ADDRESS_0, (bar_value & 0xffffff00));
824 pci_hose_write_config_dword (hose, dev, PCI_ROM_ADDRESS, 0x0);
825 pciauto_region_allocate (hose->pci_mem, 0x40000, &bar_value);
826 pci_hose_write_config_dword (hose, dev, PCI_ROM_ADDRESS, (bar_value & 0xffffff00) | 0x01);
827 gt_cpcidvi_rom.base = bar_value & 0xffffff00;
828 gt_cpcidvi_rom.init = 1;
829 }
830
831 unsigned char gt_cpcidvi_in8(unsigned int offset)
832 {
833 unsigned char data;
834
835 if (gt_cpcidvi_rom.init == 0) {
836 return(0);
837 }
838 data = in8((offset & 0x04) + 0x3f000 + gt_cpcidvi_rom.base);
839 return(data);
840 }
841
842 void gt_cpcidvi_out8(unsigned int offset, unsigned char data)
843 {
844 unsigned int off;
845
846 if (gt_cpcidvi_rom.init == 0) {
847 return;
848 }
849 off = data;
850 off = ((off << 3) & 0x7f8) + (offset & 0x4) + 0x3e000 + gt_cpcidvi_rom.base;
851 in8(off);
852 return;
853 }
854 #endif
855
856 /* TODO BJW: Change this for DB64360. This was pulled from the EV64260 */
857 /* and is curently not called *. */
858 #if 0
859 static void gt_fixup_irq (struct pci_controller *hose, pci_dev_t dev)
860 {
861 unsigned char pin, irq;
862
863 pci_read_config_byte (dev, PCI_INTERRUPT_PIN, &pin);
864
865 if (pin == 1) { /* only allow INT A */
866 irq = pci_irq_swizzle[(PCI_HOST) hose->
867 cfg_addr][PCI_DEV (dev)];
868 if (irq)
869 pci_write_config_byte (dev, PCI_INTERRUPT_LINE, irq);
870 }
871 }
872 #endif
873
874 struct pci_config_table gt_config_table[] = {
875 #ifdef CONFIG_USE_CPCIDVI
876 {PCI_VENDOR_ID_CT, PCI_DEVICE_ID_CT_69030, PCI_CLASS_DISPLAY_VGA,
877 PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, gt_setup_cpcidvi},
878 #endif
879 {PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE,
880 PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, gt_setup_ide},
881 {}
882 };
883
884 struct pci_controller pci0_hose = {
885 /* fixup_irq: gt_fixup_irq, */
886 config_table:gt_config_table,
887 };
888
889 struct pci_controller pci1_hose = {
890 /* fixup_irq: gt_fixup_irq, */
891 config_table:gt_config_table,
892 };
893
894 void pci_init_board (void)
895 {
896 unsigned int command;
897 unsigned int slave;
898 #ifdef CONFIG_PCI_PNP
899 unsigned int bar;
900 #endif
901 #ifdef DEBUG
902 gt_pci_bus_mode_display (PCI_HOST0);
903 #endif
904 #ifdef CONFIG_USE_CPCIDVI
905 gt_cpcidvi_rom.init = 0;
906 gt_cpcidvi_rom.base = 0;
907 #endif
908
909 slave = CPCI750_SLAVE_TEST;
910
911 pci0_hose.config_table = gt_config_table;
912 pci1_hose.config_table = gt_config_table;
913
914 #ifdef CONFIG_USE_CPCIDVI
915 gt_config_table[0].config_device = gt_setup_cpcidvi;
916 #endif
917 gt_config_table[1].config_device = gt_setup_ide;
918
919 pci0_hose.first_busno = 0;
920 pci0_hose.last_busno = 0xff;
921 local_buses[0] = pci0_hose.first_busno;
922
923 /* PCI memory space */
924 pci_set_region (pci0_hose.regions + 0,
925 CONFIG_SYS_PCI0_0_MEM_SPACE,
926 CONFIG_SYS_PCI0_0_MEM_SPACE,
927 CONFIG_SYS_PCI0_MEM_SIZE, PCI_REGION_MEM);
928
929 /* PCI I/O space */
930 pci_set_region (pci0_hose.regions + 1,
931 CONFIG_SYS_PCI0_IO_SPACE_PCI,
932 CONFIG_SYS_PCI0_IO_SPACE, CONFIG_SYS_PCI0_IO_SIZE, PCI_REGION_IO);
933
934 pci_set_ops (&pci0_hose,
935 pci_hose_read_config_byte_via_dword,
936 pci_hose_read_config_word_via_dword,
937 gt_read_config_dword,
938 pci_hose_write_config_byte_via_dword,
939 pci_hose_write_config_word_via_dword,
940 gt_write_config_dword);
941 pci0_hose.region_count = 2;
942
943 pci0_hose.cfg_addr = (unsigned int *) PCI_HOST0;
944
945 pci_register_hose (&pci0_hose);
946 if (slave == 0) {
947 pciArbiterEnable (PCI_HOST0);
948 pciParkingDisable (PCI_HOST0, 1, 1, 1, 1, 1, 1, 1);
949 command = pciReadConfigReg (PCI_HOST0, PCI_COMMAND, SELF);
950 command |= PCI_COMMAND_MASTER;
951 pciWriteConfigReg (PCI_HOST0, PCI_COMMAND, SELF, command);
952 command = pciReadConfigReg (PCI_HOST0, PCI_COMMAND, SELF);
953 command |= PCI_COMMAND_MEMORY;
954 pciWriteConfigReg (PCI_HOST0, PCI_COMMAND, SELF, command);
955
956 #ifdef CONFIG_PCI_PNP
957 pciauto_config_init(&pci0_hose);
958 pciauto_region_allocate(pci0_hose.pci_io, 0x400, &bar);
959 #endif
960 #ifdef CONFIG_PCI_SCAN_SHOW
961 printf("PCI: Bus Dev VenId DevId Class Int\n");
962 #endif
963 pci0_hose.last_busno = pci_hose_scan_bus (&pci0_hose,
964 pci0_hose.first_busno);
965
966 #ifdef DEBUG
967 gt_pci_bus_mode_display (PCI_HOST1);
968 #endif
969 } else {
970 pciArbiterDisable (PCI_HOST0);
971 pciParkingDisable (PCI_HOST0, 1, 1, 1, 1, 1, 1, 1);
972 command = pciReadConfigReg (PCI_HOST0, PCI_COMMAND, SELF);
973 command |= PCI_COMMAND_MASTER;
974 pciWriteConfigReg (PCI_HOST0, PCI_COMMAND, SELF, command);
975 command = pciReadConfigReg (PCI_HOST0, PCI_COMMAND, SELF);
976 command |= PCI_COMMAND_MEMORY;
977 pciWriteConfigReg (PCI_HOST0, PCI_COMMAND, SELF, command);
978 pci0_hose.last_busno = pci0_hose.first_busno;
979 }
980 pci1_hose.first_busno = pci0_hose.last_busno + 1;
981 pci1_hose.last_busno = 0xff;
982 pci1_hose.current_busno = pci1_hose.first_busno;
983 local_buses[1] = pci1_hose.first_busno;
984
985 /* PCI memory space */
986 pci_set_region (pci1_hose.regions + 0,
987 CONFIG_SYS_PCI1_0_MEM_SPACE,
988 CONFIG_SYS_PCI1_0_MEM_SPACE,
989 CONFIG_SYS_PCI1_MEM_SIZE, PCI_REGION_MEM);
990
991 /* PCI I/O space */
992 pci_set_region (pci1_hose.regions + 1,
993 CONFIG_SYS_PCI1_IO_SPACE_PCI,
994 CONFIG_SYS_PCI1_IO_SPACE, CONFIG_SYS_PCI1_IO_SIZE, PCI_REGION_IO);
995
996 pci_set_ops (&pci1_hose,
997 pci_hose_read_config_byte_via_dword,
998 pci_hose_read_config_word_via_dword,
999 gt_read_config_dword,
1000 pci_hose_write_config_byte_via_dword,
1001 pci_hose_write_config_word_via_dword,
1002 gt_write_config_dword);
1003
1004 pci1_hose.region_count = 2;
1005
1006 pci1_hose.cfg_addr = (unsigned int *) PCI_HOST1;
1007
1008 pci_register_hose (&pci1_hose);
1009
1010 pciArbiterEnable (PCI_HOST1);
1011 pciParkingDisable (PCI_HOST1, 1, 1, 1, 1, 1, 1, 1);
1012
1013 command = pciReadConfigReg (PCI_HOST1, PCI_COMMAND, SELF);
1014 command |= PCI_COMMAND_MASTER;
1015 pciWriteConfigReg (PCI_HOST1, PCI_COMMAND, SELF, command);
1016
1017 #ifdef CONFIG_PCI_PNP
1018 pciauto_config_init(&pci1_hose);
1019 pciauto_region_allocate(pci1_hose.pci_io, 0x400, &bar);
1020 #endif
1021 pci1_hose.last_busno = pci_hose_scan_bus (&pci1_hose, pci1_hose.first_busno);
1022
1023 command = pciReadConfigReg (PCI_HOST1, PCI_COMMAND, SELF);
1024 command |= PCI_COMMAND_MEMORY;
1025 pciWriteConfigReg (PCI_HOST1, PCI_COMMAND, SELF, command);
1026
1027 }
1028 #endif /* of CONFIG_PCI */
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