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Merge branch 'master' of git://git.denx.de/u-boot-mpc5xxx
[people/ms/u-boot.git] / drivers / pci / fsl_pci_init.c
1 /*
2 * Copyright 2007-2012 Freescale Semiconductor, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the Free
6 * Software Foundation; either version 2 of the License, or (at your option)
7 * any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
17 * MA 02111-1307 USA
18 */
19
20 #include <common.h>
21 #include <malloc.h>
22 #include <asm/fsl_serdes.h>
23
24 DECLARE_GLOBAL_DATA_PTR;
25
26 /*
27 * PCI/PCIE Controller initialization for mpc85xx/mpc86xx soc's
28 *
29 * Initialize controller and call the common driver/pci pci_hose_scan to
30 * scan for bridges and devices.
31 *
32 * Hose fields which need to be pre-initialized by board specific code:
33 * regions[]
34 * first_busno
35 *
36 * Fields updated:
37 * last_busno
38 */
39
40 #include <pci.h>
41 #include <asm/io.h>
42 #include <asm/fsl_pci.h>
43
44 /* Freescale-specific PCI config registers */
45 #define FSL_PCI_PBFR 0x44
46 #define FSL_PCIE_CAP_ID 0x4c
47 #define FSL_PCIE_CFG_RDY 0x4b0
48 #define FSL_PROG_IF_AGENT 0x1
49
50 #ifndef CONFIG_SYS_PCI_MEMORY_BUS
51 #define CONFIG_SYS_PCI_MEMORY_BUS 0
52 #endif
53
54 #ifndef CONFIG_SYS_PCI_MEMORY_PHYS
55 #define CONFIG_SYS_PCI_MEMORY_PHYS 0
56 #endif
57
58 #if defined(CONFIG_SYS_PCI_64BIT) && !defined(CONFIG_SYS_PCI64_MEMORY_BUS)
59 #define CONFIG_SYS_PCI64_MEMORY_BUS (64ull*1024*1024*1024)
60 #endif
61
62 /* Setup one inbound ATMU window.
63 *
64 * We let the caller decide what the window size should be
65 */
66 static void set_inbound_window(volatile pit_t *pi,
67 struct pci_region *r,
68 u64 size)
69 {
70 u32 sz = (__ilog2_u64(size) - 1);
71 u32 flag = PIWAR_EN | PIWAR_LOCAL |
72 PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
73
74 out_be32(&pi->pitar, r->phys_start >> 12);
75 out_be32(&pi->piwbar, r->bus_start >> 12);
76 #ifdef CONFIG_SYS_PCI_64BIT
77 out_be32(&pi->piwbear, r->bus_start >> 44);
78 #else
79 out_be32(&pi->piwbear, 0);
80 #endif
81 if (r->flags & PCI_REGION_PREFETCH)
82 flag |= PIWAR_PF;
83 out_be32(&pi->piwar, flag | sz);
84 }
85
86 int fsl_setup_hose(struct pci_controller *hose, unsigned long addr)
87 {
88 volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) addr;
89
90 /* Reset hose to make sure its in a clean state */
91 memset(hose, 0, sizeof(struct pci_controller));
92
93 pci_setup_indirect(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
94
95 return fsl_is_pci_agent(hose);
96 }
97
98 static int fsl_pci_setup_inbound_windows(struct pci_controller *hose,
99 u64 out_lo, u8 pcie_cap,
100 volatile pit_t *pi)
101 {
102 struct pci_region *r = hose->regions + hose->region_count;
103 u64 sz = min((u64)gd->ram_size, (1ull << 32));
104
105 phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS;
106 pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS;
107 pci_size_t pci_sz;
108
109 /* we have no space available for inbound memory mapping */
110 if (bus_start > out_lo) {
111 printf ("no space for inbound mapping of memory\n");
112 return 0;
113 }
114
115 /* limit size */
116 if ((bus_start + sz) > out_lo) {
117 sz = out_lo - bus_start;
118 debug ("limiting size to %llx\n", sz);
119 }
120
121 pci_sz = 1ull << __ilog2_u64(sz);
122 /*
123 * we can overlap inbound/outbound windows on PCI-E since RX & TX
124 * links a separate
125 */
126 if ((pcie_cap == PCI_CAP_ID_EXP) && (pci_sz < sz)) {
127 debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
128 (u64)bus_start, (u64)phys_start, (u64)sz);
129 pci_set_region(r, bus_start, phys_start, sz,
130 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
131 PCI_REGION_PREFETCH);
132
133 /* if we aren't an exact power of two match, pci_sz is smaller
134 * round it up to the next power of two. We report the actual
135 * size to pci region tracking.
136 */
137 if (pci_sz != sz)
138 sz = 2ull << __ilog2_u64(sz);
139
140 set_inbound_window(pi--, r++, sz);
141 sz = 0; /* make sure we dont set the R2 window */
142 } else {
143 debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
144 (u64)bus_start, (u64)phys_start, (u64)pci_sz);
145 pci_set_region(r, bus_start, phys_start, pci_sz,
146 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
147 PCI_REGION_PREFETCH);
148 set_inbound_window(pi--, r++, pci_sz);
149
150 sz -= pci_sz;
151 bus_start += pci_sz;
152 phys_start += pci_sz;
153
154 pci_sz = 1ull << __ilog2_u64(sz);
155 if (sz) {
156 debug ("R1 bus_start: %llx phys_start: %llx size: %llx\n",
157 (u64)bus_start, (u64)phys_start, (u64)pci_sz);
158 pci_set_region(r, bus_start, phys_start, pci_sz,
159 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
160 PCI_REGION_PREFETCH);
161 set_inbound_window(pi--, r++, pci_sz);
162 sz -= pci_sz;
163 bus_start += pci_sz;
164 phys_start += pci_sz;
165 }
166 }
167
168 #if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT)
169 /*
170 * On 64-bit capable systems, set up a mapping for all of DRAM
171 * in high pci address space.
172 */
173 pci_sz = 1ull << __ilog2_u64(gd->ram_size);
174 /* round up to the next largest power of two */
175 if (gd->ram_size > pci_sz)
176 pci_sz = 1ull << (__ilog2_u64(gd->ram_size) + 1);
177 debug ("R64 bus_start: %llx phys_start: %llx size: %llx\n",
178 (u64)CONFIG_SYS_PCI64_MEMORY_BUS,
179 (u64)CONFIG_SYS_PCI_MEMORY_PHYS,
180 (u64)pci_sz);
181 pci_set_region(r,
182 CONFIG_SYS_PCI64_MEMORY_BUS,
183 CONFIG_SYS_PCI_MEMORY_PHYS,
184 pci_sz,
185 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
186 PCI_REGION_PREFETCH);
187 set_inbound_window(pi--, r++, pci_sz);
188 #else
189 pci_sz = 1ull << __ilog2_u64(sz);
190 if (sz) {
191 debug ("R2 bus_start: %llx phys_start: %llx size: %llx\n",
192 (u64)bus_start, (u64)phys_start, (u64)pci_sz);
193 pci_set_region(r, bus_start, phys_start, pci_sz,
194 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
195 PCI_REGION_PREFETCH);
196 sz -= pci_sz;
197 bus_start += pci_sz;
198 phys_start += pci_sz;
199 set_inbound_window(pi--, r++, pci_sz);
200 }
201 #endif
202
203 #ifdef CONFIG_PHYS_64BIT
204 if (sz && (((u64)gd->ram_size) < (1ull << 32)))
205 printf("Was not able to map all of memory via "
206 "inbound windows -- %lld remaining\n", sz);
207 #endif
208
209 hose->region_count = r - hose->regions;
210
211 return 1;
212 }
213
214 #ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
215 static void fsl_pcie_boot_master(pit_t *pi)
216 {
217 /* configure inbound window for slave's u-boot image */
218 debug("PCIEBOOT - MASTER: Inbound window for slave's image; "
219 "Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
220 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
221 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS1,
222 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
223 struct pci_region r_inbound;
224 u32 sz_inbound = __ilog2_u64(CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE)
225 - 1;
226 pci_set_region(&r_inbound,
227 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS1,
228 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
229 sz_inbound,
230 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
231
232 set_inbound_window(pi--, &r_inbound,
233 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
234
235 /* configure inbound window for slave's u-boot image */
236 debug("PCIEBOOT - MASTER: Inbound window for slave's image; "
237 "Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
238 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
239 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS2,
240 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
241 pci_set_region(&r_inbound,
242 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS2,
243 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
244 sz_inbound,
245 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
246
247 set_inbound_window(pi--, &r_inbound,
248 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
249
250 /* configure inbound window for slave's ucode and ENV */
251 debug("PCIEBOOT - MASTER: Inbound window for slave's "
252 "ucode and ENV; "
253 "Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
254 (u64)CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_PHYS,
255 (u64)CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_BUS,
256 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE);
257 sz_inbound = __ilog2_u64(CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE)
258 - 1;
259 pci_set_region(&r_inbound,
260 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_BUS,
261 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_PHYS,
262 sz_inbound,
263 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
264
265 set_inbound_window(pi--, &r_inbound,
266 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE);
267 }
268
269 static void fsl_pcie_boot_master_release_slave(int port)
270 {
271 unsigned long release_addr;
272
273 /* now release slave's core 0 */
274 switch (port) {
275 case 1:
276 release_addr = CONFIG_SYS_PCIE1_MEM_VIRT
277 + CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
278 break;
279 #ifdef CONFIG_SYS_PCIE2_MEM_VIRT
280 case 2:
281 release_addr = CONFIG_SYS_PCIE2_MEM_VIRT
282 + CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
283 break;
284 #endif
285 #ifdef CONFIG_SYS_PCIE3_MEM_VIRT
286 case 3:
287 release_addr = CONFIG_SYS_PCIE3_MEM_VIRT
288 + CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
289 break;
290 #endif
291 default:
292 release_addr = 0;
293 break;
294 }
295 if (release_addr != 0) {
296 out_be32((void *)release_addr,
297 CONFIG_SRIO_PCIE_BOOT_RELEASE_MASK);
298 debug("PCIEBOOT - MASTER: "
299 "Release slave successfully! Now the slave should start up!\n");
300 } else {
301 debug("PCIEBOOT - MASTER: "
302 "Release slave failed!\n");
303 }
304 }
305 #endif
306
307 void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info)
308 {
309 u32 cfg_addr = (u32)&((ccsr_fsl_pci_t *)pci_info->regs)->cfg_addr;
310 u32 cfg_data = (u32)&((ccsr_fsl_pci_t *)pci_info->regs)->cfg_data;
311 u16 temp16;
312 u32 temp32;
313 u32 block_rev;
314 int enabled, r, inbound = 0;
315 u16 ltssm;
316 u8 temp8, pcie_cap;
317 volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)cfg_addr;
318 struct pci_region *reg = hose->regions + hose->region_count;
319 pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
320
321 /* Initialize ATMU registers based on hose regions and flags */
322 volatile pot_t *po = &pci->pot[1]; /* skip 0 */
323 volatile pit_t *pi;
324
325 u64 out_hi = 0, out_lo = -1ULL;
326 u32 pcicsrbar, pcicsrbar_sz;
327
328 pci_setup_indirect(hose, cfg_addr, cfg_data);
329
330 block_rev = in_be32(&pci->block_rev1);
331 if (PEX_IP_BLK_REV_2_2 <= block_rev) {
332 pi = &pci->pit[2]; /* 0xDC0 */
333 } else {
334 pi = &pci->pit[3]; /* 0xDE0 */
335 }
336
337 /* Handle setup of outbound windows first */
338 for (r = 0; r < hose->region_count; r++) {
339 unsigned long flags = hose->regions[r].flags;
340 u32 sz = (__ilog2_u64((u64)hose->regions[r].size) - 1);
341
342 flags &= PCI_REGION_SYS_MEMORY|PCI_REGION_TYPE;
343 if (flags != PCI_REGION_SYS_MEMORY) {
344 u64 start = hose->regions[r].bus_start;
345 u64 end = start + hose->regions[r].size;
346
347 out_be32(&po->powbar, hose->regions[r].phys_start >> 12);
348 out_be32(&po->potar, start >> 12);
349 #ifdef CONFIG_SYS_PCI_64BIT
350 out_be32(&po->potear, start >> 44);
351 #else
352 out_be32(&po->potear, 0);
353 #endif
354 if (hose->regions[r].flags & PCI_REGION_IO) {
355 out_be32(&po->powar, POWAR_EN | sz |
356 POWAR_IO_READ | POWAR_IO_WRITE);
357 } else {
358 out_be32(&po->powar, POWAR_EN | sz |
359 POWAR_MEM_READ | POWAR_MEM_WRITE);
360 out_lo = min(start, out_lo);
361 out_hi = max(end, out_hi);
362 }
363 po++;
364 }
365 }
366 debug("Outbound memory range: %llx:%llx\n", out_lo, out_hi);
367
368 /* setup PCSRBAR/PEXCSRBAR */
369 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0xffffffff);
370 pci_hose_read_config_dword (hose, dev, PCI_BASE_ADDRESS_0, &pcicsrbar_sz);
371 pcicsrbar_sz = ~pcicsrbar_sz + 1;
372
373 if (out_hi < (0x100000000ull - pcicsrbar_sz) ||
374 (out_lo > 0x100000000ull))
375 pcicsrbar = 0x100000000ull - pcicsrbar_sz;
376 else
377 pcicsrbar = (out_lo - pcicsrbar_sz) & -pcicsrbar_sz;
378 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, pcicsrbar);
379
380 out_lo = min(out_lo, (u64)pcicsrbar);
381
382 debug("PCICSRBAR @ 0x%x\n", pcicsrbar);
383
384 pci_set_region(reg++, pcicsrbar, CONFIG_SYS_CCSRBAR_PHYS,
385 pcicsrbar_sz, PCI_REGION_SYS_MEMORY);
386 hose->region_count++;
387
388 /* see if we are a PCIe or PCI controller */
389 pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap);
390
391 #ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
392 /* boot from PCIE --master */
393 char *s = getenv("bootmaster");
394 char pcie[6];
395 sprintf(pcie, "PCIE%d", pci_info->pci_num);
396
397 if (s && (strcmp(s, pcie) == 0)) {
398 debug("PCIEBOOT - MASTER: Master port [ %d ] for pcie boot.\n",
399 pci_info->pci_num);
400 fsl_pcie_boot_master((pit_t *)pi);
401 } else {
402 /* inbound */
403 inbound = fsl_pci_setup_inbound_windows(hose,
404 out_lo, pcie_cap, pi);
405 }
406 #else
407 /* inbound */
408 inbound = fsl_pci_setup_inbound_windows(hose, out_lo, pcie_cap, pi);
409 #endif
410
411 for (r = 0; r < hose->region_count; r++)
412 debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n", r,
413 (u64)hose->regions[r].phys_start,
414 (u64)hose->regions[r].bus_start,
415 (u64)hose->regions[r].size,
416 hose->regions[r].flags);
417
418 pci_register_hose(hose);
419 pciauto_config_init(hose); /* grab pci_{mem,prefetch,io} */
420 hose->current_busno = hose->first_busno;
421
422 out_be32(&pci->pedr, 0xffffffff); /* Clear any errors */
423 out_be32(&pci->peer, ~0x20140); /* Enable All Error Interrupts except
424 * - Master abort (pci)
425 * - Master PERR (pci)
426 * - ICCA (PCIe)
427 */
428 pci_hose_read_config_dword(hose, dev, PCI_DCR, &temp32);
429 temp32 |= 0xf000e; /* set URR, FER, NFER (but not CER) */
430 pci_hose_write_config_dword(hose, dev, PCI_DCR, temp32);
431
432 #if defined(CONFIG_FSL_PCIE_DISABLE_ASPM)
433 temp32 = 0;
434 pci_hose_read_config_dword(hose, dev, PCI_LCR, &temp32);
435 temp32 &= ~0x03; /* Disable ASPM */
436 pci_hose_write_config_dword(hose, dev, PCI_LCR, temp32);
437 udelay(1);
438 #endif
439 if (pcie_cap == PCI_CAP_ID_EXP) {
440 pci_hose_read_config_word(hose, dev, PCI_LTSSM, &ltssm);
441 enabled = ltssm >= PCI_LTSSM_L0;
442
443 #ifdef CONFIG_FSL_PCIE_RESET
444 if (ltssm == 1) {
445 int i;
446 debug("....PCIe link error. " "LTSSM=0x%02x.", ltssm);
447 /* assert PCIe reset */
448 setbits_be32(&pci->pdb_stat, 0x08000000);
449 (void) in_be32(&pci->pdb_stat);
450 udelay(100);
451 debug(" Asserting PCIe reset @%p = %x\n",
452 &pci->pdb_stat, in_be32(&pci->pdb_stat));
453 /* clear PCIe reset */
454 clrbits_be32(&pci->pdb_stat, 0x08000000);
455 asm("sync;isync");
456 for (i=0; i<100 && ltssm < PCI_LTSSM_L0; i++) {
457 pci_hose_read_config_word(hose, dev, PCI_LTSSM,
458 &ltssm);
459 udelay(1000);
460 debug("....PCIe link error. "
461 "LTSSM=0x%02x.\n", ltssm);
462 }
463 enabled = ltssm >= PCI_LTSSM_L0;
464
465 /* we need to re-write the bar0 since a reset will
466 * clear it
467 */
468 pci_hose_write_config_dword(hose, dev,
469 PCI_BASE_ADDRESS_0, pcicsrbar);
470 }
471 #endif
472
473 #ifdef CONFIG_SYS_P4080_ERRATUM_PCIE_A003
474 if (enabled == 0) {
475 serdes_corenet_t *srds_regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
476 temp32 = in_be32(&srds_regs->srdspccr0);
477
478 if ((temp32 >> 28) == 3) {
479 int i;
480
481 out_be32(&srds_regs->srdspccr0, 2 << 28);
482 setbits_be32(&pci->pdb_stat, 0x08000000);
483 in_be32(&pci->pdb_stat);
484 udelay(100);
485 clrbits_be32(&pci->pdb_stat, 0x08000000);
486 asm("sync;isync");
487 for (i=0; i < 100 && ltssm < PCI_LTSSM_L0; i++) {
488 pci_hose_read_config_word(hose, dev, PCI_LTSSM, &ltssm);
489 udelay(1000);
490 }
491 enabled = ltssm >= PCI_LTSSM_L0;
492 }
493 }
494 #endif
495 if (!enabled) {
496 /* Let the user know there's no PCIe link */
497 printf("no link, regs @ 0x%lx\n", pci_info->regs);
498 hose->last_busno = hose->first_busno;
499 return;
500 }
501
502 out_be32(&pci->pme_msg_det, 0xffffffff);
503 out_be32(&pci->pme_msg_int_en, 0xffffffff);
504
505 /* Print the negotiated PCIe link width */
506 pci_hose_read_config_word(hose, dev, PCI_LSR, &temp16);
507 printf("x%d, regs @ 0x%lx\n", (temp16 & 0x3f0 ) >> 4,
508 pci_info->regs);
509
510 hose->current_busno++; /* Start scan with secondary */
511 pciauto_prescan_setup_bridge(hose, dev, hose->current_busno);
512 }
513
514 /* Use generic setup_device to initialize standard pci regs,
515 * but do not allocate any windows since any BAR found (such
516 * as PCSRBAR) is not in this cpu's memory space.
517 */
518 pciauto_setup_device(hose, dev, 0, hose->pci_mem,
519 hose->pci_prefetch, hose->pci_io);
520
521 if (inbound) {
522 pci_hose_read_config_word(hose, dev, PCI_COMMAND, &temp16);
523 pci_hose_write_config_word(hose, dev, PCI_COMMAND,
524 temp16 | PCI_COMMAND_MEMORY);
525 }
526
527 #ifndef CONFIG_PCI_NOSCAN
528 if (!fsl_is_pci_agent(hose)) {
529 debug(" Scanning PCI bus %02x\n",
530 hose->current_busno);
531 hose->last_busno = pci_hose_scan_bus(hose, hose->current_busno);
532 } else {
533 debug(" Not scanning PCI bus %02x. PI=%x\n",
534 hose->current_busno, temp8);
535 hose->last_busno = hose->current_busno;
536 }
537
538 /* if we are PCIe - update limit regs and subordinate busno
539 * for the virtual P2P bridge
540 */
541 if (pcie_cap == PCI_CAP_ID_EXP) {
542 pciauto_postscan_setup_bridge(hose, dev, hose->last_busno);
543 }
544 #else
545 hose->last_busno = hose->current_busno;
546 #endif
547
548 /* Clear all error indications */
549 if (pcie_cap == PCI_CAP_ID_EXP)
550 out_be32(&pci->pme_msg_det, 0xffffffff);
551 out_be32(&pci->pedr, 0xffffffff);
552
553 pci_hose_read_config_word (hose, dev, PCI_DSR, &temp16);
554 if (temp16) {
555 pci_hose_write_config_word(hose, dev, PCI_DSR, 0xffff);
556 }
557
558 pci_hose_read_config_word (hose, dev, PCI_SEC_STATUS, &temp16);
559 if (temp16) {
560 pci_hose_write_config_word(hose, dev, PCI_SEC_STATUS, 0xffff);
561 }
562 }
563
564 int fsl_is_pci_agent(struct pci_controller *hose)
565 {
566 u8 pcie_cap;
567 pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
568
569 pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap);
570 if (pcie_cap == PCI_CAP_ID_EXP) {
571 u8 header_type;
572
573 pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE,
574 &header_type);
575 return (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL;
576 } else {
577 u8 prog_if;
578
579 pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prog_if);
580 return (prog_if == FSL_PROG_IF_AGENT);
581 }
582 }
583
584 int fsl_pci_init_port(struct fsl_pci_info *pci_info,
585 struct pci_controller *hose, int busno)
586 {
587 volatile ccsr_fsl_pci_t *pci;
588 struct pci_region *r;
589 pci_dev_t dev = PCI_BDF(busno,0,0);
590 u8 pcie_cap;
591
592 pci = (ccsr_fsl_pci_t *) pci_info->regs;
593
594 /* on non-PCIe controllers we don't have pme_msg_det so this code
595 * should do nothing since the read will return 0
596 */
597 if (in_be32(&pci->pme_msg_det)) {
598 out_be32(&pci->pme_msg_det, 0xffffffff);
599 debug (" with errors. Clearing. Now 0x%08x",
600 pci->pme_msg_det);
601 }
602
603 r = hose->regions + hose->region_count;
604
605 /* outbound memory */
606 pci_set_region(r++,
607 pci_info->mem_bus,
608 pci_info->mem_phys,
609 pci_info->mem_size,
610 PCI_REGION_MEM);
611
612 /* outbound io */
613 pci_set_region(r++,
614 pci_info->io_bus,
615 pci_info->io_phys,
616 pci_info->io_size,
617 PCI_REGION_IO);
618
619 hose->region_count = r - hose->regions;
620 hose->first_busno = busno;
621
622 fsl_pci_init(hose, pci_info);
623
624 if (fsl_is_pci_agent(hose)) {
625 fsl_pci_config_unlock(hose);
626 hose->last_busno = hose->first_busno;
627 #ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
628 } else {
629 /* boot from PCIE --master releases slave's core 0 */
630 char *s = getenv("bootmaster");
631 char pcie[6];
632 sprintf(pcie, "PCIE%d", pci_info->pci_num);
633
634 if (s && (strcmp(s, pcie) == 0))
635 fsl_pcie_boot_master_release_slave(pci_info->pci_num);
636 #endif
637 }
638
639 pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap);
640 printf("PCI%s%x: Bus %02x - %02x\n", pcie_cap == PCI_CAP_ID_EXP ?
641 "e" : "", pci_info->pci_num,
642 hose->first_busno, hose->last_busno);
643
644 return(hose->last_busno + 1);
645 }
646
647 /* Enable inbound PCI config cycles for agent/endpoint interface */
648 void fsl_pci_config_unlock(struct pci_controller *hose)
649 {
650 pci_dev_t dev = PCI_BDF(hose->first_busno,0,0);
651 u8 pcie_cap;
652 u16 pbfr;
653
654 if (!fsl_is_pci_agent(hose))
655 return;
656
657 pci_hose_read_config_byte(hose, dev, FSL_PCIE_CAP_ID, &pcie_cap);
658 if (pcie_cap != 0x0) {
659 /* PCIe - set CFG_READY bit of Configuration Ready Register */
660 pci_hose_write_config_byte(hose, dev, FSL_PCIE_CFG_RDY, 0x1);
661 } else {
662 /* PCI - clear ACL bit of PBFR */
663 pci_hose_read_config_word(hose, dev, FSL_PCI_PBFR, &pbfr);
664 pbfr &= ~0x20;
665 pci_hose_write_config_word(hose, dev, FSL_PCI_PBFR, pbfr);
666 }
667 }
668
669 #if defined(CONFIG_PCIE1) || defined(CONFIG_PCIE2) || \
670 defined(CONFIG_PCIE3) || defined(CONFIG_PCIE4)
671 int fsl_configure_pcie(struct fsl_pci_info *info,
672 struct pci_controller *hose,
673 const char *connected, int busno)
674 {
675 int is_endpoint;
676
677 set_next_law(info->mem_phys, law_size_bits(info->mem_size), info->law);
678 set_next_law(info->io_phys, law_size_bits(info->io_size), info->law);
679
680 is_endpoint = fsl_setup_hose(hose, info->regs);
681 printf("PCIe%u: %s", info->pci_num,
682 is_endpoint ? "Endpoint" : "Root Complex");
683 if (connected)
684 printf(" of %s", connected);
685 puts(", ");
686
687 return fsl_pci_init_port(info, hose, busno);
688 }
689
690 #if defined(CONFIG_FSL_CORENET)
691 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
692 #define _DEVDISR_PCIE1 FSL_CORENET_DEVDISR3_PCIE1
693 #define _DEVDISR_PCIE2 FSL_CORENET_DEVDISR3_PCIE2
694 #define _DEVDISR_PCIE3 FSL_CORENET_DEVDISR3_PCIE3
695 #define _DEVDISR_PCIE4 FSL_CORENET_DEVDISR3_PCIE4
696 #else
697 #define _DEVDISR_PCIE1 FSL_CORENET_DEVDISR_PCIE1
698 #define _DEVDISR_PCIE2 FSL_CORENET_DEVDISR_PCIE2
699 #define _DEVDISR_PCIE3 FSL_CORENET_DEVDISR_PCIE3
700 #define _DEVDISR_PCIE4 FSL_CORENET_DEVDISR_PCIE4
701 #endif
702 #define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
703 #elif defined(CONFIG_MPC85xx)
704 #define _DEVDISR_PCIE1 MPC85xx_DEVDISR_PCIE
705 #define _DEVDISR_PCIE2 MPC85xx_DEVDISR_PCIE2
706 #define _DEVDISR_PCIE3 MPC85xx_DEVDISR_PCIE3
707 #define _DEVDISR_PCIE4 0
708 #define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
709 #elif defined(CONFIG_MPC86xx)
710 #define _DEVDISR_PCIE1 MPC86xx_DEVDISR_PCIE1
711 #define _DEVDISR_PCIE2 MPC86xx_DEVDISR_PCIE2
712 #define _DEVDISR_PCIE3 0
713 #define _DEVDISR_PCIE4 0
714 #define CONFIG_SYS_MPC8xxx_GUTS_ADDR \
715 (&((immap_t *)CONFIG_SYS_IMMR)->im_gur)
716 #else
717 #error "No defines for DEVDISR_PCIE"
718 #endif
719
720 /* Implement a dummy function for those platforms w/o SERDES */
721 static const char *__board_serdes_name(enum srds_prtcl device)
722 {
723 switch (device) {
724 #ifdef CONFIG_SYS_PCIE1_NAME
725 case PCIE1:
726 return CONFIG_SYS_PCIE1_NAME;
727 #endif
728 #ifdef CONFIG_SYS_PCIE2_NAME
729 case PCIE2:
730 return CONFIG_SYS_PCIE2_NAME;
731 #endif
732 #ifdef CONFIG_SYS_PCIE3_NAME
733 case PCIE3:
734 return CONFIG_SYS_PCIE3_NAME;
735 #endif
736 #ifdef CONFIG_SYS_PCIE4_NAME
737 case PCIE4:
738 return CONFIG_SYS_PCIE4_NAME;
739 #endif
740 default:
741 return NULL;
742 }
743
744 return NULL;
745 }
746
747 __attribute__((weak, alias("__board_serdes_name"))) const char *
748 board_serdes_name(enum srds_prtcl device);
749
750 static u32 devdisr_mask[] = {
751 _DEVDISR_PCIE1,
752 _DEVDISR_PCIE2,
753 _DEVDISR_PCIE3,
754 _DEVDISR_PCIE4,
755 };
756
757 int fsl_pcie_init_ctrl(int busno, u32 devdisr, enum srds_prtcl dev,
758 struct fsl_pci_info *pci_info)
759 {
760 struct pci_controller *hose;
761 int num = dev - PCIE1;
762
763 hose = calloc(1, sizeof(struct pci_controller));
764 if (!hose)
765 return busno;
766
767 if (is_serdes_configured(dev) && !(devdisr & devdisr_mask[num])) {
768 busno = fsl_configure_pcie(pci_info, hose,
769 board_serdes_name(dev), busno);
770 } else {
771 printf("PCIe%d: disabled\n", num + 1);
772 }
773
774 return busno;
775 }
776
777 int fsl_pcie_init_board(int busno)
778 {
779 struct fsl_pci_info pci_info;
780 ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC8xxx_GUTS_ADDR;
781 u32 devdisr;
782 u32 *addr;
783
784 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
785 addr = &gur->devdisr3;
786 #else
787 addr = &gur->devdisr;
788 #endif
789 devdisr = in_be32(addr);
790
791 #ifdef CONFIG_PCIE1
792 SET_STD_PCIE_INFO(pci_info, 1);
793 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE1, &pci_info);
794 #else
795 setbits_be32(addr, _DEVDISR_PCIE1); /* disable */
796 #endif
797
798 #ifdef CONFIG_PCIE2
799 SET_STD_PCIE_INFO(pci_info, 2);
800 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE2, &pci_info);
801 #else
802 setbits_be32(addr, _DEVDISR_PCIE2); /* disable */
803 #endif
804
805 #ifdef CONFIG_PCIE3
806 SET_STD_PCIE_INFO(pci_info, 3);
807 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE3, &pci_info);
808 #else
809 setbits_be32(addr, _DEVDISR_PCIE3); /* disable */
810 #endif
811
812 #ifdef CONFIG_PCIE4
813 SET_STD_PCIE_INFO(pci_info, 4);
814 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE4, &pci_info);
815 #else
816 setbits_be32(addr, _DEVDISR_PCIE4); /* disable */
817 #endif
818
819 return busno;
820 }
821 #else
822 int fsl_pcie_init_ctrl(int busno, u32 devdisr, enum srds_prtcl dev,
823 struct fsl_pci_info *pci_info)
824 {
825 return busno;
826 }
827
828 int fsl_pcie_init_board(int busno)
829 {
830 return busno;
831 }
832 #endif
833
834 #ifdef CONFIG_OF_BOARD_SETUP
835 #include <libfdt.h>
836 #include <fdt_support.h>
837
838 void ft_fsl_pci_setup(void *blob, const char *pci_compat,
839 unsigned long ctrl_addr)
840 {
841 int off;
842 u32 bus_range[2];
843 phys_addr_t p_ctrl_addr = (phys_addr_t)ctrl_addr;
844 struct pci_controller *hose;
845
846 hose = find_hose_by_cfg_addr((void *)(ctrl_addr));
847
848 /* convert ctrl_addr to true physical address */
849 p_ctrl_addr = (phys_addr_t)ctrl_addr - CONFIG_SYS_CCSRBAR;
850 p_ctrl_addr += CONFIG_SYS_CCSRBAR_PHYS;
851
852 off = fdt_node_offset_by_compat_reg(blob, pci_compat, p_ctrl_addr);
853
854 if (off < 0)
855 return;
856
857 /* We assume a cfg_addr not being set means we didn't setup the controller */
858 if ((hose == NULL) || (hose->cfg_addr == NULL)) {
859 fdt_del_node(blob, off);
860 } else {
861 bus_range[0] = 0;
862 bus_range[1] = hose->last_busno - hose->first_busno;
863 fdt_setprop(blob, off, "bus-range", &bus_range[0], 2*4);
864 fdt_pci_dma_ranges(blob, off, hose);
865 }
866 }
867 #endif
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