1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2007-2012 Freescale Semiconductor, Inc.
11 #include <asm/fsl_serdes.h>
12 #include <asm/global_data.h>
13 #include <linux/delay.h>
15 DECLARE_GLOBAL_DATA_PTR;
18 * PCI/PCIE Controller initialization for mpc85xx/mpc86xx soc's
20 * Initialize controller and call the common driver/pci pci_hose_scan to
21 * scan for bridges and devices.
23 * Hose fields which need to be pre-initialized by board specific code:
33 #include <asm/fsl_pci.h>
35 #define MAX_PCI_REGIONS 7
37 #ifndef CONFIG_SYS_PCI_MEMORY_BUS
38 #define CONFIG_SYS_PCI_MEMORY_BUS 0
41 #ifndef CONFIG_SYS_PCI_MEMORY_PHYS
42 #define CONFIG_SYS_PCI_MEMORY_PHYS 0
45 #if defined(CONFIG_SYS_PCI_64BIT) && !defined(CONFIG_SYS_PCI64_MEMORY_BUS)
46 #define CONFIG_SYS_PCI64_MEMORY_BUS (64ull*1024*1024*1024)
49 /* Setup one inbound ATMU window.
51 * We let the caller decide what the window size should be
53 static void set_inbound_window(volatile pit_t *pi,
57 u32 sz = (__ilog2_u64(size) - 1);
58 #ifdef CONFIG_SYS_FSL_ERRATUM_A005434
61 u32 flag = PIWAR_LOCAL;
64 flag |= PIWAR_EN | PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
66 out_be32(&pi->pitar, r->phys_start >> 12);
67 out_be32(&pi->piwbar, r->bus_start >> 12);
68 #ifdef CONFIG_SYS_PCI_64BIT
69 out_be32(&pi->piwbear, r->bus_start >> 44);
71 out_be32(&pi->piwbear, 0);
73 if (r->flags & PCI_REGION_PREFETCH)
75 out_be32(&pi->piwar, flag | sz);
78 int fsl_setup_hose(struct pci_controller *hose, unsigned long addr)
80 volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) addr;
82 /* Reset hose to make sure its in a clean state */
83 memset(hose, 0, sizeof(struct pci_controller));
85 hose->regions = (struct pci_region *)
86 calloc(1, MAX_PCI_REGIONS * sizeof(struct pci_region));
88 pci_setup_indirect(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
90 return fsl_is_pci_agent(hose);
93 static int fsl_pci_setup_inbound_windows(struct pci_controller *hose,
94 u64 out_lo, u8 pcie_cap,
97 struct pci_region *r = hose->regions + hose->region_count;
98 u64 sz = min((u64)gd->ram_size, (1ull << 32));
100 phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS;
101 pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS;
104 /* we have no space available for inbound memory mapping */
105 if (bus_start > out_lo) {
106 printf ("no space for inbound mapping of memory\n");
111 if ((bus_start + sz) > out_lo) {
112 sz = out_lo - bus_start;
113 debug ("limiting size to %llx\n", sz);
116 pci_sz = 1ull << __ilog2_u64(sz);
118 * we can overlap inbound/outbound windows on PCI-E since RX & TX
121 if ((pcie_cap == PCI_CAP_ID_EXP) && (pci_sz < sz)) {
122 debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
123 (u64)bus_start, (u64)phys_start, (u64)sz);
124 pci_set_region(r, bus_start, phys_start, sz,
125 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
126 PCI_REGION_PREFETCH);
128 /* if we aren't an exact power of two match, pci_sz is smaller
129 * round it up to the next power of two. We report the actual
130 * size to pci region tracking.
133 sz = 2ull << __ilog2_u64(sz);
135 set_inbound_window(pi--, r++, sz);
136 sz = 0; /* make sure we dont set the R2 window */
138 debug ("R0 bus_start: %llx phys_start: %llx size: %llx\n",
139 (u64)bus_start, (u64)phys_start, (u64)pci_sz);
140 pci_set_region(r, bus_start, phys_start, pci_sz,
141 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
142 PCI_REGION_PREFETCH);
143 set_inbound_window(pi--, r++, pci_sz);
147 phys_start += pci_sz;
149 pci_sz = 1ull << __ilog2_u64(sz);
151 debug ("R1 bus_start: %llx phys_start: %llx size: %llx\n",
152 (u64)bus_start, (u64)phys_start, (u64)pci_sz);
153 pci_set_region(r, bus_start, phys_start, pci_sz,
154 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
155 PCI_REGION_PREFETCH);
156 set_inbound_window(pi--, r++, pci_sz);
159 phys_start += pci_sz;
163 #if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT)
165 * On 64-bit capable systems, set up a mapping for all of DRAM
166 * in high pci address space.
168 pci_sz = 1ull << __ilog2_u64(gd->ram_size);
169 /* round up to the next largest power of two */
170 if (gd->ram_size > pci_sz)
171 pci_sz = 1ull << (__ilog2_u64(gd->ram_size) + 1);
172 debug ("R64 bus_start: %llx phys_start: %llx size: %llx\n",
173 (u64)CONFIG_SYS_PCI64_MEMORY_BUS,
174 (u64)CONFIG_SYS_PCI_MEMORY_PHYS,
177 CONFIG_SYS_PCI64_MEMORY_BUS,
178 CONFIG_SYS_PCI_MEMORY_PHYS,
180 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
181 PCI_REGION_PREFETCH);
182 set_inbound_window(pi--, r++, pci_sz);
184 pci_sz = 1ull << __ilog2_u64(sz);
186 debug ("R2 bus_start: %llx phys_start: %llx size: %llx\n",
187 (u64)bus_start, (u64)phys_start, (u64)pci_sz);
188 pci_set_region(r, bus_start, phys_start, pci_sz,
189 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY |
190 PCI_REGION_PREFETCH);
193 phys_start += pci_sz;
194 set_inbound_window(pi--, r++, pci_sz);
198 #ifdef CONFIG_PHYS_64BIT
199 if (sz && (((u64)gd->ram_size) < (1ull << 32)))
200 printf("Was not able to map all of memory via "
201 "inbound windows -- %lld remaining\n", sz);
204 hose->region_count = r - hose->regions;
209 #ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
210 static void fsl_pcie_boot_master(pit_t *pi)
212 /* configure inbound window for slave's u-boot image */
213 debug("PCIEBOOT - MASTER: Inbound window for slave's image; "
214 "Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
215 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
216 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS1,
217 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
218 struct pci_region r_inbound;
219 u32 sz_inbound = __ilog2_u64(CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE)
221 pci_set_region(&r_inbound,
222 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS1,
223 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
225 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
227 set_inbound_window(pi--, &r_inbound,
228 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
230 /* configure inbound window for slave's u-boot image */
231 debug("PCIEBOOT - MASTER: Inbound window for slave's image; "
232 "Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
233 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
234 (u64)CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS2,
235 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
236 pci_set_region(&r_inbound,
237 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_BUS2,
238 CONFIG_SRIO_PCIE_BOOT_IMAGE_MEM_PHYS,
240 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
242 set_inbound_window(pi--, &r_inbound,
243 CONFIG_SRIO_PCIE_BOOT_IMAGE_SIZE);
245 /* configure inbound window for slave's ucode and ENV */
246 debug("PCIEBOOT - MASTER: Inbound window for slave's "
248 "Local = 0x%llx, Bus = 0x%llx, Size = 0x%x\n",
249 (u64)CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_PHYS,
250 (u64)CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_BUS,
251 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE);
252 sz_inbound = __ilog2_u64(CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE)
254 pci_set_region(&r_inbound,
255 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_BUS,
256 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_MEM_PHYS,
258 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
260 set_inbound_window(pi--, &r_inbound,
261 CONFIG_SRIO_PCIE_BOOT_UCODE_ENV_SIZE);
264 static void fsl_pcie_boot_master_release_slave(int port)
266 unsigned long release_addr;
268 /* now release slave's core 0 */
271 release_addr = CONFIG_SYS_PCIE1_MEM_VIRT
272 + CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
274 #ifdef CONFIG_SYS_PCIE2_MEM_VIRT
276 release_addr = CONFIG_SYS_PCIE2_MEM_VIRT
277 + CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
280 #ifdef CONFIG_SYS_PCIE3_MEM_VIRT
282 release_addr = CONFIG_SYS_PCIE3_MEM_VIRT
283 + CONFIG_SRIO_PCIE_BOOT_BRR_OFFSET;
290 if (release_addr != 0) {
291 out_be32((void *)release_addr,
292 CONFIG_SRIO_PCIE_BOOT_RELEASE_MASK);
293 debug("PCIEBOOT - MASTER: "
294 "Release slave successfully! Now the slave should start up!\n");
296 debug("PCIEBOOT - MASTER: "
297 "Release slave failed!\n");
302 void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info)
304 u32 cfg_addr = (u32)&((ccsr_fsl_pci_t *)pci_info->regs)->cfg_addr;
305 u32 cfg_data = (u32)&((ccsr_fsl_pci_t *)pci_info->regs)->cfg_data;
309 int enabled, r, inbound = 0;
317 #if defined(CONFIG_FSL_PCIE_DISABLE_ASPM)
321 volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)cfg_addr;
322 struct pci_region *reg = hose->regions + hose->region_count;
323 pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
325 /* Initialize ATMU registers based on hose regions and flags */
326 volatile pot_t *po = &pci->pot[1]; /* skip 0 */
329 u64 out_hi = 0, out_lo = -1ULL;
330 u32 pcicsrbar, pcicsrbar_sz;
332 pci_setup_indirect(hose, cfg_addr, cfg_data);
335 /* Configure the PCIE controller core clock ratio */
336 pci_hose_write_config_dword(hose, dev, 0x440,
337 ((gd->bus_clk / 1000000) *
338 (16 / PEX_CCB_DIV)) / 333);
340 block_rev = in_be32(&pci->block_rev1);
341 if (PEX_IP_BLK_REV_2_2 <= block_rev) {
342 pi = &pci->pit[2]; /* 0xDC0 */
344 pi = &pci->pit[3]; /* 0xDE0 */
347 /* Handle setup of outbound windows first */
348 for (r = 0; r < hose->region_count; r++) {
349 unsigned long flags = hose->regions[r].flags;
350 u32 sz = (__ilog2_u64((u64)hose->regions[r].size) - 1);
352 flags &= PCI_REGION_SYS_MEMORY|PCI_REGION_TYPE;
353 if (flags != PCI_REGION_SYS_MEMORY) {
354 u64 start = hose->regions[r].bus_start;
355 u64 end = start + hose->regions[r].size;
357 out_be32(&po->powbar, hose->regions[r].phys_start >> 12);
358 out_be32(&po->potar, start >> 12);
359 #ifdef CONFIG_SYS_PCI_64BIT
360 out_be32(&po->potear, start >> 44);
362 out_be32(&po->potear, 0);
364 if (hose->regions[r].flags & PCI_REGION_IO) {
365 out_be32(&po->powar, POWAR_EN | sz |
366 POWAR_IO_READ | POWAR_IO_WRITE);
368 out_be32(&po->powar, POWAR_EN | sz |
369 POWAR_MEM_READ | POWAR_MEM_WRITE);
370 out_lo = min(start, out_lo);
371 out_hi = max(end, out_hi);
376 debug("Outbound memory range: %llx:%llx\n", out_lo, out_hi);
378 /* setup PCSRBAR/PEXCSRBAR */
379 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, 0xffffffff);
380 pci_hose_read_config_dword (hose, dev, PCI_BASE_ADDRESS_0, &pcicsrbar_sz);
381 pcicsrbar_sz = ~pcicsrbar_sz + 1;
383 if (out_hi < (0x100000000ull - pcicsrbar_sz) ||
384 (out_lo > 0x100000000ull))
385 pcicsrbar = 0x100000000ull - pcicsrbar_sz;
387 pcicsrbar = (out_lo - pcicsrbar_sz) & -pcicsrbar_sz;
388 pci_hose_write_config_dword(hose, dev, PCI_BASE_ADDRESS_0, pcicsrbar);
390 out_lo = min(out_lo, (u64)pcicsrbar);
392 debug("PCICSRBAR @ 0x%x\n", pcicsrbar);
394 pci_set_region(reg++, pcicsrbar, CONFIG_SYS_CCSRBAR_PHYS,
395 pcicsrbar_sz, PCI_REGION_SYS_MEMORY);
396 hose->region_count++;
398 /* see if we are a PCIe or PCI controller */
399 pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
400 pci_dcr = pcie_cap_pos + 0x08;
401 pci_dsr = pcie_cap_pos + 0x0a;
402 pci_lsr = pcie_cap_pos + 0x12;
404 pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
406 #ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
407 /* boot from PCIE --master */
408 char *s = env_get("bootmaster");
410 sprintf(pcie, "PCIE%d", pci_info->pci_num);
412 if (s && (strcmp(s, pcie) == 0)) {
413 debug("PCIEBOOT - MASTER: Master port [ %d ] for pcie boot.\n",
415 fsl_pcie_boot_master((pit_t *)pi);
418 inbound = fsl_pci_setup_inbound_windows(hose,
419 out_lo, pcie_cap, pi);
423 inbound = fsl_pci_setup_inbound_windows(hose, out_lo, pcie_cap, pi);
426 for (r = 0; r < hose->region_count; r++)
427 debug("PCI reg:%d %016llx:%016llx %016llx %08lx\n", r,
428 (u64)hose->regions[r].phys_start,
429 (u64)hose->regions[r].bus_start,
430 (u64)hose->regions[r].size,
431 hose->regions[r].flags);
433 pci_register_hose(hose);
434 pciauto_config_init(hose); /* grab pci_{mem,prefetch,io} */
435 hose->current_busno = hose->first_busno;
437 out_be32(&pci->pedr, 0xffffffff); /* Clear any errors */
438 out_be32(&pci->peer, ~0x20140); /* Enable All Error Interrupts except
439 * - Master abort (pci)
440 * - Master PERR (pci)
443 pci_hose_read_config_dword(hose, dev, pci_dcr, &temp32);
444 temp32 |= 0xf000e; /* set URR, FER, NFER (but not CER) */
445 pci_hose_write_config_dword(hose, dev, pci_dcr, temp32);
447 #if defined(CONFIG_FSL_PCIE_DISABLE_ASPM)
448 pci_lcr = pcie_cap_pos + 0x10;
450 pci_hose_read_config_dword(hose, dev, pci_lcr, &temp32);
451 temp32 &= ~0x03; /* Disable ASPM */
452 pci_hose_write_config_dword(hose, dev, pci_lcr, temp32);
455 if (pcie_cap == PCI_CAP_ID_EXP) {
456 if (block_rev >= PEX_IP_BLK_REV_3_0) {
457 #define PEX_CSR0_LTSSM_MASK 0xFC
458 #define PEX_CSR0_LTSSM_SHIFT 2
459 ltssm = (in_be32(&pci->pex_csr0)
460 & PEX_CSR0_LTSSM_MASK) >> PEX_CSR0_LTSSM_SHIFT;
461 enabled = (ltssm == 0x11) ? 1 : 0;
462 #ifdef CONFIG_FSL_PCIE_RESET
464 /* assert PCIe reset */
465 setbits_be32(&pci->pdb_stat, 0x08000000);
466 (void) in_be32(&pci->pdb_stat);
468 /* clear PCIe reset */
469 clrbits_be32(&pci->pdb_stat, 0x08000000);
471 for (i = 0; i < 100 && ltssm < PCI_LTSSM_L0; i++) {
472 pci_hose_read_config_word(hose, dev, PCI_LTSSM,
478 /* pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm); */
479 /* enabled = ltssm >= PCI_LTSSM_L0; */
480 pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm);
481 enabled = ltssm >= PCI_LTSSM_L0;
483 #ifdef CONFIG_FSL_PCIE_RESET
486 debug("....PCIe link error. " "LTSSM=0x%02x.", ltssm);
487 /* assert PCIe reset */
488 setbits_be32(&pci->pdb_stat, 0x08000000);
489 (void) in_be32(&pci->pdb_stat);
491 debug(" Asserting PCIe reset @%p = %x\n",
492 &pci->pdb_stat, in_be32(&pci->pdb_stat));
493 /* clear PCIe reset */
494 clrbits_be32(&pci->pdb_stat, 0x08000000);
496 for (i=0; i<100 && ltssm < PCI_LTSSM_L0; i++) {
497 pci_hose_read_config_word(hose, dev, PCI_LTSSM,
500 debug("....PCIe link error. "
501 "LTSSM=0x%02x.\n", ltssm);
503 enabled = ltssm >= PCI_LTSSM_L0;
505 /* we need to re-write the bar0 since a reset will
508 pci_hose_write_config_dword(hose, dev,
509 PCI_BASE_ADDRESS_0, pcicsrbar);
514 #ifdef CONFIG_SYS_P4080_ERRATUM_PCIE_A003
516 serdes_corenet_t *srds_regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
517 temp32 = in_be32(&srds_regs->srdspccr0);
519 if ((temp32 >> 28) == 3) {
522 out_be32(&srds_regs->srdspccr0, 2 << 28);
523 setbits_be32(&pci->pdb_stat, 0x08000000);
524 in_be32(&pci->pdb_stat);
526 clrbits_be32(&pci->pdb_stat, 0x08000000);
528 for (i=0; i < 100 && ltssm < PCI_LTSSM_L0; i++) {
529 pci_hose_read_config_word(hose, dev, PCI_LTSSM, <ssm);
532 enabled = ltssm >= PCI_LTSSM_L0;
537 /* Let the user know there's no PCIe link for root
538 * complex. for endpoint, the link may not setup, so
539 * print undetermined.
541 if (fsl_is_pci_agent(hose))
542 printf("undetermined, regs @ 0x%lx\n", pci_info->regs);
544 printf("no link, regs @ 0x%lx\n", pci_info->regs);
545 hose->last_busno = hose->first_busno;
549 out_be32(&pci->pme_msg_det, 0xffffffff);
550 out_be32(&pci->pme_msg_int_en, 0xffffffff);
552 /* Print the negotiated PCIe link width */
553 pci_hose_read_config_word(hose, dev, pci_lsr, &temp16);
554 printf("x%d gen%d, regs @ 0x%lx\n", (temp16 & 0x3f0) >> 4,
555 (temp16 & 0xf), pci_info->regs);
557 hose->current_busno++; /* Start scan with secondary */
558 pciauto_prescan_setup_bridge(hose, dev, hose->current_busno);
561 #ifdef CONFIG_SYS_FSL_ERRATUM_A007815
562 /* The Read-Only Write Enable bit defaults to 1 instead of 0.
563 * Set to 0 to protect the read-only registers.
565 clrbits_be32(&pci->dbi_ro_wr_en, 0x01);
568 /* Use generic setup_device to initialize standard pci regs,
569 * but do not allocate any windows since any BAR found (such
570 * as PCSRBAR) is not in this cpu's memory space.
572 pciauto_setup_device(hose, dev, 0, hose->pci_mem,
573 hose->pci_prefetch, hose->pci_io);
576 pci_hose_read_config_word(hose, dev, PCI_COMMAND, &temp16);
577 pci_hose_write_config_word(hose, dev, PCI_COMMAND,
578 temp16 | PCI_COMMAND_MEMORY);
581 #ifndef CONFIG_PCI_NOSCAN
582 if (!fsl_is_pci_agent(hose)) {
583 debug(" Scanning PCI bus %02x\n",
584 hose->current_busno);
585 hose->last_busno = pci_hose_scan_bus(hose, hose->current_busno);
587 debug(" Not scanning PCI bus %02x. PI=%x\n",
588 hose->current_busno, temp8);
589 hose->last_busno = hose->current_busno;
592 /* if we are PCIe - update limit regs and subordinate busno
593 * for the virtual P2P bridge
595 if (pcie_cap == PCI_CAP_ID_EXP) {
596 pciauto_postscan_setup_bridge(hose, dev, hose->last_busno);
599 hose->last_busno = hose->current_busno;
602 /* Clear all error indications */
603 if (pcie_cap == PCI_CAP_ID_EXP)
604 out_be32(&pci->pme_msg_det, 0xffffffff);
605 out_be32(&pci->pedr, 0xffffffff);
607 pci_hose_read_config_word(hose, dev, pci_dsr, &temp16);
609 pci_hose_write_config_word(hose, dev, pci_dsr, 0xffff);
612 pci_hose_read_config_word (hose, dev, PCI_SEC_STATUS, &temp16);
614 pci_hose_write_config_word(hose, dev, PCI_SEC_STATUS, 0xffff);
618 int fsl_is_pci_agent(struct pci_controller *hose)
622 pci_dev_t dev = PCI_BDF(hose->first_busno, 0, 0);
624 pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
625 pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
626 if (pcie_cap == PCI_CAP_ID_EXP) {
629 pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE,
631 return (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL;
635 pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prog_if);
636 /* Programming Interface (PCI_CLASS_PROG)
637 * 0 == pci host or pcie root-complex,
638 * 1 == pci agent or pcie end-point
640 return (prog_if == FSL_PROG_IF_AGENT);
644 int fsl_pci_init_port(struct fsl_pci_info *pci_info,
645 struct pci_controller *hose, int busno)
647 volatile ccsr_fsl_pci_t *pci;
648 struct pci_region *r;
649 pci_dev_t dev = PCI_BDF(busno,0,0);
653 pci = (ccsr_fsl_pci_t *) pci_info->regs;
655 /* on non-PCIe controllers we don't have pme_msg_det so this code
656 * should do nothing since the read will return 0
658 if (in_be32(&pci->pme_msg_det)) {
659 out_be32(&pci->pme_msg_det, 0xffffffff);
660 debug (" with errors. Clearing. Now 0x%08x",
664 r = hose->regions + hose->region_count;
666 /* outbound memory */
680 hose->region_count = r - hose->regions;
681 hose->first_busno = busno;
683 fsl_pci_init(hose, pci_info);
685 if (fsl_is_pci_agent(hose)) {
686 fsl_pci_config_unlock(hose);
687 hose->last_busno = hose->first_busno;
688 #ifdef CONFIG_SRIO_PCIE_BOOT_MASTER
690 /* boot from PCIE --master releases slave's core 0 */
691 char *s = env_get("bootmaster");
693 sprintf(pcie, "PCIE%d", pci_info->pci_num);
695 if (s && (strcmp(s, pcie) == 0))
696 fsl_pcie_boot_master_release_slave(pci_info->pci_num);
700 pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
701 pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
702 printf("PCI%s%x: Bus %02x - %02x\n", pcie_cap == PCI_CAP_ID_EXP ?
703 "e" : "", pci_info->pci_num,
704 hose->first_busno, hose->last_busno);
705 return(hose->last_busno + 1);
708 /* Enable inbound PCI config cycles for agent/endpoint interface */
709 void fsl_pci_config_unlock(struct pci_controller *hose)
711 pci_dev_t dev = PCI_BDF(hose->first_busno,0,0);
716 if (!fsl_is_pci_agent(hose))
719 pcie_cap_pos = pci_hose_find_capability(hose, dev, PCI_CAP_ID_EXP);
720 pci_hose_read_config_byte(hose, dev, pcie_cap_pos, &pcie_cap);
721 if (pcie_cap != 0x0) {
722 ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)hose->cfg_addr;
723 u32 block_rev = in_be32(&pci->block_rev1);
724 /* PCIe - set CFG_READY bit of Configuration Ready Register */
725 if (block_rev >= PEX_IP_BLK_REV_3_0)
726 setbits_be32(&pci->config, FSL_PCIE_V3_CFG_RDY);
728 pci_hose_write_config_byte(hose, dev,
729 FSL_PCIE_CFG_RDY, 0x1);
731 /* PCI - clear ACL bit of PBFR */
732 pci_hose_read_config_word(hose, dev, FSL_PCI_PBFR, &pbfr);
734 pci_hose_write_config_word(hose, dev, FSL_PCI_PBFR, pbfr);
738 #if defined(CONFIG_PCIE1) || defined(CONFIG_PCIE2) || \
739 defined(CONFIG_PCIE3) || defined(CONFIG_PCIE4)
740 int fsl_configure_pcie(struct fsl_pci_info *info,
741 struct pci_controller *hose,
742 const char *connected, int busno)
746 set_next_law(info->mem_phys, law_size_bits(info->mem_size), info->law);
747 set_next_law(info->io_phys, law_size_bits(info->io_size), info->law);
749 is_endpoint = fsl_setup_hose(hose, info->regs);
750 printf("PCIe%u: %s", info->pci_num,
751 is_endpoint ? "Endpoint" : "Root Complex");
753 printf(" of %s", connected);
756 return fsl_pci_init_port(info, hose, busno);
759 #if defined(CONFIG_FSL_CORENET)
760 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
761 #define _DEVDISR_PCIE1 FSL_CORENET_DEVDISR3_PCIE1
762 #define _DEVDISR_PCIE2 FSL_CORENET_DEVDISR3_PCIE2
763 #define _DEVDISR_PCIE3 FSL_CORENET_DEVDISR3_PCIE3
764 #define _DEVDISR_PCIE4 FSL_CORENET_DEVDISR3_PCIE4
766 #define _DEVDISR_PCIE1 FSL_CORENET_DEVDISR_PCIE1
767 #define _DEVDISR_PCIE2 FSL_CORENET_DEVDISR_PCIE2
768 #define _DEVDISR_PCIE3 FSL_CORENET_DEVDISR_PCIE3
769 #define _DEVDISR_PCIE4 FSL_CORENET_DEVDISR_PCIE4
771 #define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
772 #elif defined(CONFIG_MPC85xx)
773 #define _DEVDISR_PCIE1 MPC85xx_DEVDISR_PCIE
774 #define _DEVDISR_PCIE2 MPC85xx_DEVDISR_PCIE2
775 #define _DEVDISR_PCIE3 MPC85xx_DEVDISR_PCIE3
776 #define _DEVDISR_PCIE4 0
777 #define CONFIG_SYS_MPC8xxx_GUTS_ADDR CONFIG_SYS_MPC85xx_GUTS_ADDR
778 #elif defined(CONFIG_MPC86xx)
779 #define _DEVDISR_PCIE1 MPC86xx_DEVDISR_PCIE1
780 #define _DEVDISR_PCIE2 MPC86xx_DEVDISR_PCIE2
781 #define _DEVDISR_PCIE3 0
782 #define _DEVDISR_PCIE4 0
783 #define CONFIG_SYS_MPC8xxx_GUTS_ADDR \
784 (&((immap_t *)CONFIG_SYS_IMMR)->im_gur)
786 #error "No defines for DEVDISR_PCIE"
789 /* Implement a dummy function for those platforms w/o SERDES */
790 static const char *__board_serdes_name(enum srds_prtcl device)
793 #ifdef CONFIG_SYS_PCIE1_NAME
795 return CONFIG_SYS_PCIE1_NAME;
797 #ifdef CONFIG_SYS_PCIE2_NAME
799 return CONFIG_SYS_PCIE2_NAME;
801 #ifdef CONFIG_SYS_PCIE3_NAME
803 return CONFIG_SYS_PCIE3_NAME;
805 #ifdef CONFIG_SYS_PCIE4_NAME
807 return CONFIG_SYS_PCIE4_NAME;
816 __attribute__((weak, alias("__board_serdes_name"))) const char *
817 board_serdes_name(enum srds_prtcl device);
819 static u32 devdisr_mask[] = {
826 int fsl_pcie_init_ctrl(int busno, u32 devdisr, enum srds_prtcl dev,
827 struct fsl_pci_info *pci_info)
829 struct pci_controller *hose;
830 int num = dev - PCIE1;
832 hose = calloc(1, sizeof(struct pci_controller));
836 if (is_serdes_configured(dev) && !(devdisr & devdisr_mask[num])) {
837 busno = fsl_configure_pcie(pci_info, hose,
838 board_serdes_name(dev), busno);
840 printf("PCIe%d: disabled\n", num + 1);
846 int fsl_pcie_init_board(int busno)
848 struct fsl_pci_info pci_info;
849 ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC8xxx_GUTS_ADDR;
853 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
854 addr = &gur->devdisr3;
856 addr = &gur->devdisr;
858 devdisr = in_be32(addr);
861 SET_STD_PCIE_INFO(pci_info, 1);
862 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE1, &pci_info);
864 setbits_be32(addr, _DEVDISR_PCIE1); /* disable */
868 SET_STD_PCIE_INFO(pci_info, 2);
869 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE2, &pci_info);
871 setbits_be32(addr, _DEVDISR_PCIE2); /* disable */
875 SET_STD_PCIE_INFO(pci_info, 3);
876 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE3, &pci_info);
878 setbits_be32(addr, _DEVDISR_PCIE3); /* disable */
882 SET_STD_PCIE_INFO(pci_info, 4);
883 busno = fsl_pcie_init_ctrl(busno, devdisr, PCIE4, &pci_info);
885 setbits_be32(addr, _DEVDISR_PCIE4); /* disable */
891 int fsl_pcie_init_ctrl(int busno, u32 devdisr, enum srds_prtcl dev,
892 struct fsl_pci_info *pci_info)
897 int fsl_pcie_init_board(int busno)
903 #ifdef CONFIG_OF_BOARD_SETUP
904 #include <linux/libfdt.h>
905 #include <fdt_support.h>
907 void ft_fsl_pci_setup(void *blob, const char *pci_compat,
908 unsigned long ctrl_addr)
912 phys_addr_t p_ctrl_addr = (phys_addr_t)ctrl_addr;
913 struct pci_controller *hose;
915 hose = find_hose_by_cfg_addr((void *)(ctrl_addr));
917 /* convert ctrl_addr to true physical address */
918 p_ctrl_addr = (phys_addr_t)ctrl_addr - CONFIG_SYS_CCSRBAR;
919 p_ctrl_addr += CONFIG_SYS_CCSRBAR_PHYS;
921 off = fdt_node_offset_by_compat_reg(blob, pci_compat, p_ctrl_addr);
926 /* We assume a cfg_addr not being set means we didn't setup the controller */
927 if ((hose == NULL) || (hose->cfg_addr == NULL)) {
928 fdt_del_node(blob, off);
931 bus_range[1] = hose->last_busno - hose->first_busno;
932 fdt_setprop(blob, off, "bus-range", &bus_range[0], 2*4);
933 fdt_pci_dma_ranges(blob, off, hose);