2 * (C) Copyright 2006 - 2008
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Copyright (c) 2005 Cisco Systems. All rights reserved.
6 * Roland Dreier <rolandd@cisco.com>
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
23 /* define DEBUG for debugging output (obviously ;-)) */
31 #include <asm/processor.h>
32 #include <asm-ppc/io.h>
33 #include <asm/errno.h>
35 #if (defined(CONFIG_440SPE) || defined(CONFIG_405EX) || \
36 defined(CONFIG_460EX) || defined(CONFIG_460GT)) && \
37 defined(CONFIG_PCI) && !defined(CONFIG_PCI_DISABLE_PCIE)
39 #include <asm/4xx_pcie.h>
43 PTYPE_LEGACY_ENDPOINT = 0x1,
44 PTYPE_ROOT_PORT = 0x4,
52 int board_pcie_first(void);
53 int board_pcie_last(void);
54 static struct pci_controller pcie_hose[CONFIG_SYS_PCIE_NR_PORTS];
57 * Per default, all cards are present, so we need to check if the
60 int __board_pcie_card_present(int port)
64 int board_pcie_card_present(int port)
65 __attribute__((weak, alias("__board_pcie_card_present")));
68 * Some boards have runtime detection of the first and last PCIe
69 * slot used, so let's provide weak default functions for the
72 int __board_pcie_first(void)
76 int board_pcie_first(void)
77 __attribute__((weak, alias("__board_pcie_first")));
79 int __board_pcie_last(void)
81 return CONFIG_SYS_PCIE_NR_PORTS - 1;
83 int board_pcie_last(void)
84 __attribute__((weak, alias("__board_pcie_last")));
86 void __board_pcie_setup_port(int port, int rootpoint)
88 /* noting in this weak default implementation */
90 void board_pcie_setup_port(int port, int rootpoint)
91 __attribute__((weak, alias("__board_pcie_setup_port")));
93 void pcie_setup_hoses(int busno)
95 struct pci_controller *hose;
100 int first = board_pcie_first();
101 int last = board_pcie_last();
104 * Assume we're called after the PCI(X) hose(s) are initialized,
105 * which takes bus ID 0... and therefore start numbering PCIe's
106 * from the next number.
110 for (i = first; i <= last; i++) {
112 * Some boards (e.g. Katmai) can detects via hardware
113 * if a PCIe card is plugged, so let's check this.
115 if (!board_pcie_card_present(i))
118 if (is_end_point(i)) {
119 board_pcie_setup_port(i, 0);
120 ret = ppc4xx_init_pcie_endport(i);
122 board_pcie_setup_port(i, 1);
123 ret = ppc4xx_init_pcie_rootport(i);
128 printf("PCIE%d: initialization as %s failed\n", i,
129 is_end_point(i) ? "endpoint" : "root-complex");
133 hose = &pcie_hose[i];
134 hose->first_busno = bus;
135 hose->last_busno = bus;
136 hose->current_busno = bus;
138 /* setup mem resource */
139 pci_set_region(hose->regions + 0,
140 CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
141 CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
142 CONFIG_SYS_PCIE_MEMSIZE,
144 hose->region_count = 1;
145 pci_register_hose(hose);
147 if (is_end_point(i)) {
148 ppc4xx_setup_pcie_endpoint(hose, i);
150 * Reson for no scanning is endpoint can not generate
151 * upstream configuration accesses.
154 ppc4xx_setup_pcie_rootpoint(hose, i);
155 env = getenv ("pciscandelay");
157 delay = simple_strtoul(env, NULL, 10);
159 printf("Warning, expect noticable delay before "
160 "PCIe scan due to 'pciscandelay' value!\n");
161 mdelay(delay * 1000);
165 * Config access can only go down stream
167 hose->last_busno = pci_hose_scan(hose);
168 bus = hose->last_busno + 1;
174 static int validate_endpoint(struct pci_controller *hose)
176 if (hose->cfg_data == (u8 *)CONFIG_SYS_PCIE0_CFGBASE)
177 return (is_end_point(0));
178 else if (hose->cfg_data == (u8 *)CONFIG_SYS_PCIE1_CFGBASE)
179 return (is_end_point(1));
180 #if CONFIG_SYS_PCIE_NR_PORTS > 2
181 else if (hose->cfg_data == (u8 *)CONFIG_SYS_PCIE2_CFGBASE)
182 return (is_end_point(2));
188 static u8* pcie_get_base(struct pci_controller *hose, unsigned int devfn)
190 u8 *base = (u8*)hose->cfg_data;
192 /* use local configuration space for the first bus */
193 if (PCI_BUS(devfn) == 0) {
194 if (hose->cfg_data == (u8*)CONFIG_SYS_PCIE0_CFGBASE)
195 base = (u8*)CONFIG_SYS_PCIE0_XCFGBASE;
196 if (hose->cfg_data == (u8*)CONFIG_SYS_PCIE1_CFGBASE)
197 base = (u8*)CONFIG_SYS_PCIE1_XCFGBASE;
198 #if CONFIG_SYS_PCIE_NR_PORTS > 2
199 if (hose->cfg_data == (u8*)CONFIG_SYS_PCIE2_CFGBASE)
200 base = (u8*)CONFIG_SYS_PCIE2_XCFGBASE;
207 static void pcie_dmer_disable(void)
209 mtdcr (DCRN_PEGPL_CFG(DCRN_PCIE0_BASE),
210 mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE0_BASE)) | GPL_DMER_MASK_DISA);
211 mtdcr (DCRN_PEGPL_CFG(DCRN_PCIE1_BASE),
212 mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE1_BASE)) | GPL_DMER_MASK_DISA);
213 #if CONFIG_SYS_PCIE_NR_PORTS > 2
214 mtdcr (DCRN_PEGPL_CFG(DCRN_PCIE2_BASE),
215 mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE2_BASE)) | GPL_DMER_MASK_DISA);
219 static void pcie_dmer_enable(void)
221 mtdcr (DCRN_PEGPL_CFG (DCRN_PCIE0_BASE),
222 mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE0_BASE)) & ~GPL_DMER_MASK_DISA);
223 mtdcr (DCRN_PEGPL_CFG (DCRN_PCIE1_BASE),
224 mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE1_BASE)) & ~GPL_DMER_MASK_DISA);
225 #if CONFIG_SYS_PCIE_NR_PORTS > 2
226 mtdcr (DCRN_PEGPL_CFG (DCRN_PCIE2_BASE),
227 mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE2_BASE)) & ~GPL_DMER_MASK_DISA);
231 static int pcie_read_config(struct pci_controller *hose, unsigned int devfn,
232 int offset, int len, u32 *val) {
237 if (validate_endpoint(hose))
238 return 0; /* No upstream config access */
241 * Bus numbers are relative to hose->first_busno
243 devfn -= PCI_BDF(hose->first_busno, 0, 0);
246 * NOTICE: configuration space ranges are currenlty mapped only for
247 * the first 16 buses, so such limit must be imposed. In case more
248 * buses are required the TLB settings in board/amcc/<board>/init.S
249 * need to be altered accordingly (one bus takes 1 MB of memory space).
251 if (PCI_BUS(devfn) >= 16)
255 * Only single device/single function is supported for the primary and
256 * secondary buses of the 440SPe host bridge.
258 if ((!((PCI_FUNC(devfn) == 0) && (PCI_DEV(devfn) == 0))) &&
259 ((PCI_BUS(devfn) == 0) || (PCI_BUS(devfn) == 1)))
262 address = pcie_get_base(hose, devfn);
263 offset += devfn << 4;
266 * Reading from configuration space of non-existing device can
267 * generate transaction errors. For the read duration we suppress
268 * assertion of machine check exceptions to avoid those.
270 pcie_dmer_disable ();
272 debug("%s: cfg_data=%08x offset=%08x\n", __func__, hose->cfg_data, offset);
275 *val = in_8(hose->cfg_data + offset);
278 *val = in_le16((u16 *)(hose->cfg_data + offset));
281 *val = in_le32((u32*)(hose->cfg_data + offset));
290 static int pcie_write_config(struct pci_controller *hose, unsigned int devfn,
291 int offset, int len, u32 val) {
295 if (validate_endpoint(hose))
296 return 0; /* No upstream config access */
299 * Bus numbers are relative to hose->first_busno
301 devfn -= PCI_BDF(hose->first_busno, 0, 0);
304 * Same constraints as in pcie_read_config().
306 if (PCI_BUS(devfn) >= 16)
309 if ((!((PCI_FUNC(devfn) == 0) && (PCI_DEV(devfn) == 0))) &&
310 ((PCI_BUS(devfn) == 0) || (PCI_BUS(devfn) == 1)))
313 address = pcie_get_base(hose, devfn);
314 offset += devfn << 4;
317 * Suppress MCK exceptions, similar to pcie_read_config()
319 pcie_dmer_disable ();
323 out_8(hose->cfg_data + offset, val);
326 out_le16((u16 *)(hose->cfg_data + offset), val);
329 out_le32((u32 *)(hose->cfg_data + offset), val);
338 int pcie_read_config_byte(struct pci_controller *hose,pci_dev_t dev,int offset,u8 *val)
343 rv = pcie_read_config(hose, dev, offset, 1, &v);
348 int pcie_read_config_word(struct pci_controller *hose,pci_dev_t dev,int offset,u16 *val)
353 rv = pcie_read_config(hose, dev, offset, 2, &v);
358 int pcie_read_config_dword(struct pci_controller *hose,pci_dev_t dev,int offset,u32 *val)
363 rv = pcie_read_config(hose, dev, offset, 3, &v);
368 int pcie_write_config_byte(struct pci_controller *hose,pci_dev_t dev,int offset,u8 val)
370 return pcie_write_config(hose,(u32)dev,offset,1,val);
373 int pcie_write_config_word(struct pci_controller *hose,pci_dev_t dev,int offset,u16 val)
375 return pcie_write_config(hose,(u32)dev,offset,2,(u32 )val);
378 int pcie_write_config_dword(struct pci_controller *hose,pci_dev_t dev,int offset,u32 val)
380 return pcie_write_config(hose,(u32)dev,offset,3,(u32 )val);
383 #if defined(CONFIG_440SPE)
384 static void ppc4xx_setup_utl(u32 port) {
386 volatile void *utl_base = NULL;
393 mtdcr(DCRN_PEGPL_REGBAH(PCIE0), 0x0000000c);
394 mtdcr(DCRN_PEGPL_REGBAL(PCIE0), 0x20000000);
395 mtdcr(DCRN_PEGPL_REGMSK(PCIE0), 0x00007001);
396 mtdcr(DCRN_PEGPL_SPECIAL(PCIE0), 0x68782800);
400 mtdcr(DCRN_PEGPL_REGBAH(PCIE1), 0x0000000c);
401 mtdcr(DCRN_PEGPL_REGBAL(PCIE1), 0x20001000);
402 mtdcr(DCRN_PEGPL_REGMSK(PCIE1), 0x00007001);
403 mtdcr(DCRN_PEGPL_SPECIAL(PCIE1), 0x68782800);
407 mtdcr(DCRN_PEGPL_REGBAH(PCIE2), 0x0000000c);
408 mtdcr(DCRN_PEGPL_REGBAL(PCIE2), 0x20002000);
409 mtdcr(DCRN_PEGPL_REGMSK(PCIE2), 0x00007001);
410 mtdcr(DCRN_PEGPL_SPECIAL(PCIE2), 0x68782800);
413 utl_base = (unsigned int *)(CONFIG_SYS_PCIE_BASE + 0x1000 * port);
416 * Set buffer allocations and then assert VRB and TXE.
418 out_be32(utl_base + PEUTL_OUTTR, 0x08000000);
419 out_be32(utl_base + PEUTL_INTR, 0x02000000);
420 out_be32(utl_base + PEUTL_OPDBSZ, 0x10000000);
421 out_be32(utl_base + PEUTL_PBBSZ, 0x53000000);
422 out_be32(utl_base + PEUTL_IPHBSZ, 0x08000000);
423 out_be32(utl_base + PEUTL_IPDBSZ, 0x10000000);
424 out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
425 out_be32(utl_base + PEUTL_PCTL, 0x80800066);
428 static int check_error(void)
430 u32 valPE0, valPE1, valPE2;
433 /* SDR0_PEGPLLLCT1 reset */
434 if (!(valPE0 = SDR_READ(PESDR0_PLLLCT1) & 0x01000000))
435 printf("PCIE: SDR0_PEGPLLLCT1 reset error 0x%x\n", valPE0);
437 valPE0 = SDR_READ(PESDR0_RCSSET);
438 valPE1 = SDR_READ(PESDR1_RCSSET);
439 valPE2 = SDR_READ(PESDR2_RCSSET);
441 /* SDR0_PExRCSSET rstgu */
442 if (!(valPE0 & 0x01000000) ||
443 !(valPE1 & 0x01000000) ||
444 !(valPE2 & 0x01000000)) {
445 printf("PCIE: SDR0_PExRCSSET rstgu error\n");
449 /* SDR0_PExRCSSET rstdl */
450 if (!(valPE0 & 0x00010000) ||
451 !(valPE1 & 0x00010000) ||
452 !(valPE2 & 0x00010000)) {
453 printf("PCIE: SDR0_PExRCSSET rstdl error\n");
457 /* SDR0_PExRCSSET rstpyn */
458 if ((valPE0 & 0x00001000) ||
459 (valPE1 & 0x00001000) ||
460 (valPE2 & 0x00001000)) {
461 printf("PCIE: SDR0_PExRCSSET rstpyn error\n");
465 /* SDR0_PExRCSSET hldplb */
466 if ((valPE0 & 0x10000000) ||
467 (valPE1 & 0x10000000) ||
468 (valPE2 & 0x10000000)) {
469 printf("PCIE: SDR0_PExRCSSET hldplb error\n");
473 /* SDR0_PExRCSSET rdy */
474 if ((valPE0 & 0x00100000) ||
475 (valPE1 & 0x00100000) ||
476 (valPE2 & 0x00100000)) {
477 printf("PCIE: SDR0_PExRCSSET rdy error\n");
481 /* SDR0_PExRCSSET shutdown */
482 if ((valPE0 & 0x00000100) ||
483 (valPE1 & 0x00000100) ||
484 (valPE2 & 0x00000100)) {
485 printf("PCIE: SDR0_PExRCSSET shutdown error\n");
492 * Initialize PCI Express core
494 int ppc4xx_init_pcie(void)
498 /* Set PLL clock receiver to LVPECL */
499 SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) | 1 << 28);
502 printf("ERROR: failed to set PCIe reference clock receiver --"
503 "PESDR0_PLLLCT1 = 0x%08x\n", SDR_READ(PESDR0_PLLLCT1));
508 /* Did resistance calibration work? */
509 if (!(SDR_READ(PESDR0_PLLLCT2) & 0x10000)) {
510 printf("ERROR: PCIe resistance calibration failed --"
511 "PESDR0_PLLLCT2 = 0x%08x\n", SDR_READ(PESDR0_PLLLCT2));
515 /* De-assert reset of PCIe PLL, wait for lock */
516 SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) & ~(1 << 24));
517 udelay(300); /* 300 uS is maximum time lock should take */
520 if (!(SDR_READ(PESDR0_PLLLCT3) & 0x10000000)) {
522 udelay(20); /* Wait 20 uS more if needed */
527 printf("ERROR: PCIe PLL VCO output not locked to ref clock --"
528 "PESDR0_PLLLCTS=0x%08x\n", SDR_READ(PESDR0_PLLLCT3));
536 #if defined(CONFIG_460EX) || defined(CONFIG_460GT)
537 static void ppc4xx_setup_utl(u32 port)
539 volatile void *utl_base = NULL;
542 * Map UTL registers at 0x0801_n000 (4K 0xfff mask) PEGPLn_REGMSK
546 mtdcr(DCRN_PEGPL_REGBAH(PCIE0), U64_TO_U32_HIGH(CONFIG_SYS_PCIE0_UTLBASE));
547 mtdcr(DCRN_PEGPL_REGBAL(PCIE0), U64_TO_U32_LOW(CONFIG_SYS_PCIE0_UTLBASE));
548 mtdcr(DCRN_PEGPL_REGMSK(PCIE0), 0x00007001); /* BAM 11100000=4KB */
549 mtdcr(DCRN_PEGPL_SPECIAL(PCIE0), 0);
553 mtdcr(DCRN_PEGPL_REGBAH(PCIE1), U64_TO_U32_HIGH(CONFIG_SYS_PCIE0_UTLBASE));
554 mtdcr(DCRN_PEGPL_REGBAL(PCIE1), U64_TO_U32_LOW(CONFIG_SYS_PCIE0_UTLBASE)
556 mtdcr(DCRN_PEGPL_REGMSK(PCIE1), 0x00007001); /* BAM 11100000=4KB */
557 mtdcr(DCRN_PEGPL_SPECIAL(PCIE1), 0);
560 utl_base = (unsigned int *)(CONFIG_SYS_PCIE_BASE + 0x1000 * port);
563 * Set buffer allocations and then assert VRB and TXE.
565 out_be32(utl_base + PEUTL_PBCTL, 0x0800000c); /* PLBME, CRRE */
566 out_be32(utl_base + PEUTL_OUTTR, 0x08000000);
567 out_be32(utl_base + PEUTL_INTR, 0x02000000);
568 out_be32(utl_base + PEUTL_OPDBSZ, 0x04000000); /* OPD = 512 Bytes */
569 out_be32(utl_base + PEUTL_PBBSZ, 0x00000000); /* Max 512 Bytes */
570 out_be32(utl_base + PEUTL_IPHBSZ, 0x02000000);
571 out_be32(utl_base + PEUTL_IPDBSZ, 0x04000000); /* IPD = 512 Bytes */
572 out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
573 out_be32(utl_base + PEUTL_PCTL, 0x80800066); /* VRB,TXE,timeout=default */
577 * TODO: double check PCI express SDR based on the latest user manual
578 * Some registers specified here no longer exist.. has to be
579 * updated based on the final EAS spec.
581 static int check_error(void)
586 valPE0 = SDR_READ(SDRN_PESDR_RCSSET(0));
587 valPE1 = SDR_READ(SDRN_PESDR_RCSSET(1));
589 /* SDR0_PExRCSSET rstgu */
590 if (!(valPE0 & PESDRx_RCSSET_RSTGU) || !(valPE1 & PESDRx_RCSSET_RSTGU)) {
591 printf("PCIE: SDR0_PExRCSSET rstgu error\n");
595 /* SDR0_PExRCSSET rstdl */
596 if (!(valPE0 & PESDRx_RCSSET_RSTDL) || !(valPE1 & PESDRx_RCSSET_RSTDL)) {
597 printf("PCIE: SDR0_PExRCSSET rstdl error\n");
601 /* SDR0_PExRCSSET rstpyn */
602 if ((valPE0 & PESDRx_RCSSET_RSTPYN) || (valPE1 & PESDRx_RCSSET_RSTPYN)) {
603 printf("PCIE: SDR0_PExRCSSET rstpyn error\n");
607 /* SDR0_PExRCSSET hldplb */
608 if ((valPE0 & PESDRx_RCSSET_HLDPLB) || (valPE1 & PESDRx_RCSSET_HLDPLB)) {
609 printf("PCIE: SDR0_PExRCSSET hldplb error\n");
613 /* SDR0_PExRCSSET rdy */
614 if ((valPE0 & PESDRx_RCSSET_RDY) || (valPE1 & PESDRx_RCSSET_RDY)) {
615 printf("PCIE: SDR0_PExRCSSET rdy error\n");
623 * Initialize PCI Express core as described in User Manual
624 * TODO: double check PE SDR PLL Register with the updated user manual.
626 int ppc4xx_init_pcie(void)
633 #endif /* CONFIG_460EX */
635 #if defined(CONFIG_405EX)
636 static void ppc4xx_setup_utl(u32 port)
641 * Map UTL registers at 0xef4f_n000 (4K 0xfff mask) PEGPLn_REGMSK
645 mtdcr(DCRN_PEGPL_REGBAH(PCIE0), 0x00000000);
646 mtdcr(DCRN_PEGPL_REGBAL(PCIE0), CONFIG_SYS_PCIE0_UTLBASE);
647 mtdcr(DCRN_PEGPL_REGMSK(PCIE0), 0x00007001); /* 4k region, valid */
648 mtdcr(DCRN_PEGPL_SPECIAL(PCIE0), 0);
652 mtdcr(DCRN_PEGPL_REGBAH(PCIE1), 0x00000000);
653 mtdcr(DCRN_PEGPL_REGBAL(PCIE1), CONFIG_SYS_PCIE1_UTLBASE);
654 mtdcr(DCRN_PEGPL_REGMSK(PCIE1), 0x00007001); /* 4k region, valid */
655 mtdcr(DCRN_PEGPL_SPECIAL(PCIE1), 0);
659 utl_base = (port==0) ? CONFIG_SYS_PCIE0_UTLBASE : CONFIG_SYS_PCIE1_UTLBASE;
662 * Set buffer allocations and then assert VRB and TXE.
664 out_be32((u32 *)(utl_base + PEUTL_OUTTR), 0x02000000);
665 out_be32((u32 *)(utl_base + PEUTL_INTR), 0x02000000);
666 out_be32((u32 *)(utl_base + PEUTL_OPDBSZ), 0x04000000);
667 out_be32((u32 *)(utl_base + PEUTL_PBBSZ), 0x21000000);
668 out_be32((u32 *)(utl_base + PEUTL_IPHBSZ), 0x02000000);
669 out_be32((u32 *)(utl_base + PEUTL_IPDBSZ), 0x04000000);
670 out_be32((u32 *)(utl_base + PEUTL_RCIRQEN), 0x00f00000);
671 out_be32((u32 *)(utl_base + PEUTL_PCTL), 0x80800066);
673 out_be32((u32 *)(utl_base + PEUTL_PBCTL), 0x0800000c);
674 out_be32((u32 *)(utl_base + PEUTL_RCSTA),
675 in_be32((u32 *)(utl_base + PEUTL_RCSTA)) | 0x000040000);
678 int ppc4xx_init_pcie(void)
681 * Nothing to do on 405EX
685 #endif /* CONFIG_405EX */
688 * Board-specific pcie initialization
689 * Platform code can reimplement ppc4xx_init_pcie_port_hw() if needed
693 * Initialize various parts of the PCI Express core for our port:
695 * - Set as a root port and enable max width
696 * (PXIE0 -> X8, PCIE1 and PCIE2 -> X4).
697 * - Set up UTL configuration.
698 * - Increase SERDES drive strength to levels suggested by AMCC.
699 * - De-assert RSTPYN, RSTDL and RSTGU.
701 * NOTICE for 440SPE revB chip: PESDRn_UTLSET2 is not set - we leave it
702 * with default setting 0x11310000. The register has new fields,
703 * PESDRn_UTLSET2[LKINE] in particular: clearing it leads to PCIE core
706 #if defined(CONFIG_440SPE)
707 int __ppc4xx_init_pcie_port_hw(int port, int rootport)
713 val = PTYPE_ROOT_PORT << 20;
714 utlset1 = 0x21222222;
716 val = PTYPE_LEGACY_ENDPOINT << 20;
717 utlset1 = 0x20222222;
721 val |= LNKW_X8 << 12;
723 val |= LNKW_X4 << 12;
725 SDR_WRITE(SDRN_PESDR_DLPSET(port), val);
726 SDR_WRITE(SDRN_PESDR_UTLSET1(port), utlset1);
727 if (!ppc440spe_revB())
728 SDR_WRITE(SDRN_PESDR_UTLSET2(port), 0x11000000);
729 SDR_WRITE(SDRN_PESDR_HSSL0SET1(port), 0x35000000);
730 SDR_WRITE(SDRN_PESDR_HSSL1SET1(port), 0x35000000);
731 SDR_WRITE(SDRN_PESDR_HSSL2SET1(port), 0x35000000);
732 SDR_WRITE(SDRN_PESDR_HSSL3SET1(port), 0x35000000);
734 SDR_WRITE(PESDR0_HSSL4SET1, 0x35000000);
735 SDR_WRITE(PESDR0_HSSL5SET1, 0x35000000);
736 SDR_WRITE(PESDR0_HSSL6SET1, 0x35000000);
737 SDR_WRITE(PESDR0_HSSL7SET1, 0x35000000);
739 SDR_WRITE(SDRN_PESDR_RCSSET(port), (SDR_READ(SDRN_PESDR_RCSSET(port)) &
740 ~(1 << 24 | 1 << 16)) | 1 << 12);
744 #endif /* CONFIG_440SPE */
746 #if defined(CONFIG_460EX) || defined(CONFIG_460GT)
747 int __ppc4xx_init_pcie_port_hw(int port, int rootport)
753 val = PTYPE_ROOT_PORT << 20;
755 val = PTYPE_LEGACY_ENDPOINT << 20;
758 val |= LNKW_X1 << 12;
759 utlset1 = 0x20000000;
761 val |= LNKW_X4 << 12;
762 utlset1 = 0x20101101;
765 SDR_WRITE(SDRN_PESDR_DLPSET(port), val);
766 SDR_WRITE(SDRN_PESDR_UTLSET1(port), utlset1);
767 SDR_WRITE(SDRN_PESDR_UTLSET2(port), 0x01210000);
771 SDR_WRITE(PESDR0_L0CDRCTL, 0x00003230);
772 SDR_WRITE(PESDR0_L0DRV, 0x00000130);
773 SDR_WRITE(PESDR0_L0CLK, 0x00000006);
775 SDR_WRITE(PESDR0_PHY_CTL_RST,0x10000000);
779 SDR_WRITE(PESDR1_L0CDRCTL, 0x00003230);
780 SDR_WRITE(PESDR1_L1CDRCTL, 0x00003230);
781 SDR_WRITE(PESDR1_L2CDRCTL, 0x00003230);
782 SDR_WRITE(PESDR1_L3CDRCTL, 0x00003230);
783 SDR_WRITE(PESDR1_L0DRV, 0x00000130);
784 SDR_WRITE(PESDR1_L1DRV, 0x00000130);
785 SDR_WRITE(PESDR1_L2DRV, 0x00000130);
786 SDR_WRITE(PESDR1_L3DRV, 0x00000130);
787 SDR_WRITE(PESDR1_L0CLK, 0x00000006);
788 SDR_WRITE(PESDR1_L1CLK, 0x00000006);
789 SDR_WRITE(PESDR1_L2CLK, 0x00000006);
790 SDR_WRITE(PESDR1_L3CLK, 0x00000006);
792 SDR_WRITE(PESDR1_PHY_CTL_RST,0x10000000);
796 SDR_WRITE(SDRN_PESDR_RCSSET(port), SDR_READ(SDRN_PESDR_RCSSET(port)) |
797 (PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTPYN));
799 /* Poll for PHY reset */
802 while (!(SDR_READ(PESDR0_RSTSTA) & 0x1))
806 while (!(SDR_READ(PESDR1_RSTSTA) & 0x1))
811 SDR_WRITE(SDRN_PESDR_RCSSET(port),
812 (SDR_READ(SDRN_PESDR_RCSSET(port)) &
813 ~(PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTDL)) |
814 PESDRx_RCSSET_RSTPYN);
818 #endif /* CONFIG_440SPE */
820 #if defined(CONFIG_405EX)
821 int __ppc4xx_init_pcie_port_hw(int port, int rootport)
830 SDR_WRITE(SDRN_PESDR_DLPSET(port), val);
831 SDR_WRITE(SDRN_PESDR_UTLSET1(port), 0x00000000);
832 SDR_WRITE(SDRN_PESDR_UTLSET2(port), 0x01010000);
833 SDR_WRITE(SDRN_PESDR_PHYSET1(port), 0x720F0000);
834 SDR_WRITE(SDRN_PESDR_PHYSET2(port), 0x70600003);
836 /* Assert the PE0_PHY reset */
837 SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x01010000);
840 /* deassert the PE0_hotreset */
841 if (is_end_point(port))
842 SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x01111000);
844 SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x01101000);
846 /* poll for phy !reset */
847 while (!(SDR_READ(SDRN_PESDR_PHYSTA(port)) & 0x00001000))
850 /* deassert the PE0_gpl_utl_reset */
851 SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x00101000);
854 mtdcr(DCRN_PEGPL_CFG(PCIE0), 0x10000000); /* guarded on */
856 mtdcr(DCRN_PEGPL_CFG(PCIE1), 0x10000000); /* guarded on */
860 #endif /* CONFIG_405EX */
862 int ppc4xx_init_pcie_port_hw(int port, int rootport)
863 __attribute__((weak, alias("__ppc4xx_init_pcie_port_hw")));
866 * We map PCI Express configuration access into the 512MB regions
868 * NOTICE: revB is very strict about PLB real addressess and ranges to
869 * be mapped for config space; it seems to only work with d_nnnn_nnnn
870 * range (hangs the core upon config transaction attempts when set
871 * otherwise) while revA uses c_nnnn_nnnn.
874 * PCIE0: 0xc_4000_0000
875 * PCIE1: 0xc_8000_0000
876 * PCIE2: 0xc_c000_0000
879 * PCIE0: 0xd_0000_0000
880 * PCIE1: 0xd_2000_0000
881 * PCIE2: 0xd_4000_0000
888 * PCIE0: 0xd_0000_0000
889 * PCIE1: 0xd_2000_0000
891 static inline u64 ppc4xx_get_cfgaddr(int port)
893 #if defined(CONFIG_405EX)
895 return (u64)CONFIG_SYS_PCIE0_CFGBASE;
897 return (u64)CONFIG_SYS_PCIE1_CFGBASE;
899 #if defined(CONFIG_440SPE)
900 if (ppc440spe_revB()) {
902 default: /* to satisfy compiler */
904 return 0x0000000d00000000ULL;
906 return 0x0000000d20000000ULL;
908 return 0x0000000d40000000ULL;
912 default: /* to satisfy compiler */
914 return 0x0000000c40000000ULL;
916 return 0x0000000c80000000ULL;
918 return 0x0000000cc0000000ULL;
922 #if defined(CONFIG_460EX) || defined(CONFIG_460GT)
924 return 0x0000000d00000000ULL;
926 return 0x0000000d20000000ULL;
931 * 4xx boards as end point and root point setup
933 * testing inbound and out bound windows
935 * 4xx boards can be plugged into another 4xx boards or you can get PCI-E
936 * cable which can be used to setup loop back from one port to another port.
937 * Please rememeber that unless there is a endpoint plugged in to root port it
938 * will not initialize. It is the same in case of endpoint , unless there is
939 * root port attached it will not initialize.
941 * In this release of software all the PCI-E ports are configured as either
942 * endpoint or rootpoint.In future we will have support for selective ports
943 * setup as endpoint and root point in single board.
945 * Once your board came up as root point , you can verify by reading
946 * /proc/bus/pci/devices. Where you can see the configuration registers
947 * of end point device attached to the port.
949 * Enpoint cofiguration can be verified by connecting 4xx board to any
950 * host or another 4xx board. Then try to scan the device. In case of
951 * linux use "lspci" or appripriate os command.
953 * How do I verify the inbound and out bound windows ? (4xx to 4xx)
954 * in this configuration inbound and outbound windows are setup to access
955 * sram memroy area. SRAM is at 0x4 0000 0000 , on PLB bus. This address
956 * is mapped at 0x90000000. From u-boot prompt write data 0xb000 0000,
957 * This is waere your POM(PLB out bound memory window) mapped. then
958 * read the data from other 4xx board's u-boot prompt at address
959 * 0x9000 0000(SRAM). Data should match.
960 * In case of inbound , write data to u-boot command prompt at 0xb000 0000
961 * which is mapped to 0x4 0000 0000. Now on rootpoint yucca u-boot prompt check
962 * data at 0x9000 0000(SRAM).Data should match.
964 int ppc4xx_init_pcie_port(int port, int rootport)
966 static int core_init;
967 volatile u32 val = 0;
973 if (ppc4xx_init_pcie())
979 * Initialize various parts of the PCI Express core for our port
981 ppc4xx_init_pcie_port_hw(port, rootport);
984 * Notice: the following delay has critical impact on device
985 * initialization - if too short (<50ms) the link doesn't get up.
989 val = SDR_READ(SDRN_PESDR_RCSSTS(port));
990 if (val & (1 << 20)) {
991 printf("PCIE%d: PGRST failed %08x\n", port, val);
998 val = SDR_READ(SDRN_PESDR_LOOP(port));
999 if (!(val & 0x00001000)) {
1000 printf("PCIE%d: link is not up.\n", port);
1005 * Setup UTL registers - but only on revA!
1006 * We use default settings for revB chip.
1008 if (!ppc440spe_revB())
1009 ppc4xx_setup_utl(port);
1012 * We map PCI Express configuration access into the 512MB regions
1014 addr = ppc4xx_get_cfgaddr(port);
1015 low = U64_TO_U32_LOW(addr);
1016 high = U64_TO_U32_HIGH(addr);
1020 mtdcr(DCRN_PEGPL_CFGBAH(PCIE0), high);
1021 mtdcr(DCRN_PEGPL_CFGBAL(PCIE0), low);
1022 mtdcr(DCRN_PEGPL_CFGMSK(PCIE0), 0xe0000001); /* 512MB region, valid */
1025 mtdcr(DCRN_PEGPL_CFGBAH(PCIE1), high);
1026 mtdcr(DCRN_PEGPL_CFGBAL(PCIE1), low);
1027 mtdcr(DCRN_PEGPL_CFGMSK(PCIE1), 0xe0000001); /* 512MB region, valid */
1029 #if CONFIG_SYS_PCIE_NR_PORTS > 2
1031 mtdcr(DCRN_PEGPL_CFGBAH(PCIE2), high);
1032 mtdcr(DCRN_PEGPL_CFGBAL(PCIE2), low);
1033 mtdcr(DCRN_PEGPL_CFGMSK(PCIE2), 0xe0000001); /* 512MB region, valid */
1039 * Check for VC0 active and assert RDY.
1042 while(!(SDR_READ(SDRN_PESDR_RCSSTS(port)) & (1 << 16))) {
1043 if (!(attempts--)) {
1044 printf("PCIE%d: VC0 not active\n", port);
1049 SDR_WRITE(SDRN_PESDR_RCSSET(port),
1050 SDR_READ(SDRN_PESDR_RCSSET(port)) | 1 << 20);
1056 int ppc4xx_init_pcie_rootport(int port)
1058 return ppc4xx_init_pcie_port(port, 1);
1061 int ppc4xx_init_pcie_endport(int port)
1063 return ppc4xx_init_pcie_port(port, 0);
1066 void ppc4xx_setup_pcie_rootpoint(struct pci_controller *hose, int port)
1068 volatile void *mbase = NULL;
1069 volatile void *rmbase = NULL;
1072 pcie_read_config_byte,
1073 pcie_read_config_word,
1074 pcie_read_config_dword,
1075 pcie_write_config_byte,
1076 pcie_write_config_word,
1077 pcie_write_config_dword);
1081 mbase = (u32 *)CONFIG_SYS_PCIE0_XCFGBASE;
1082 rmbase = (u32 *)CONFIG_SYS_PCIE0_CFGBASE;
1083 hose->cfg_data = (u8 *)CONFIG_SYS_PCIE0_CFGBASE;
1086 mbase = (u32 *)CONFIG_SYS_PCIE1_XCFGBASE;
1087 rmbase = (u32 *)CONFIG_SYS_PCIE1_CFGBASE;
1088 hose->cfg_data = (u8 *)CONFIG_SYS_PCIE1_CFGBASE;
1090 #if CONFIG_SYS_PCIE_NR_PORTS > 2
1092 mbase = (u32 *)CONFIG_SYS_PCIE2_XCFGBASE;
1093 rmbase = (u32 *)CONFIG_SYS_PCIE2_CFGBASE;
1094 hose->cfg_data = (u8 *)CONFIG_SYS_PCIE2_CFGBASE;
1100 * Set bus numbers on our root port
1102 out_8((u8 *)mbase + PCI_PRIMARY_BUS, 0);
1103 out_8((u8 *)mbase + PCI_SECONDARY_BUS, 1);
1104 out_8((u8 *)mbase + PCI_SUBORDINATE_BUS, 1);
1107 * Set up outbound translation to hose->mem_space from PLB
1108 * addresses at an offset of 0xd_0000_0000. We set the low
1109 * bits of the mask to 11 to turn off splitting into 8
1110 * subregions and to enable the outbound translation.
1112 out_le32(mbase + PECFG_POM0LAH, 0x00000000);
1113 out_le32(mbase + PECFG_POM0LAL, CONFIG_SYS_PCIE_MEMBASE +
1114 port * CONFIG_SYS_PCIE_MEMSIZE);
1115 debug("PECFG_POM0LA=%08x.%08x\n", in_le32(mbase + PECFG_POM0LAH),
1116 in_le32(mbase + PECFG_POM0LAL));
1120 mtdcr(DCRN_PEGPL_OMR1BAH(PCIE0), CONFIG_SYS_PCIE_ADDR_HIGH);
1121 mtdcr(DCRN_PEGPL_OMR1BAL(PCIE0), CONFIG_SYS_PCIE_MEMBASE +
1122 port * CONFIG_SYS_PCIE_MEMSIZE);
1123 mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE0), 0x7fffffff);
1124 mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE0),
1125 ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
1126 debug("0:PEGPL_OMR1BA=%08x.%08x MSK=%08x.%08x\n",
1127 mfdcr(DCRN_PEGPL_OMR1BAH(PCIE0)),
1128 mfdcr(DCRN_PEGPL_OMR1BAL(PCIE0)),
1129 mfdcr(DCRN_PEGPL_OMR1MSKH(PCIE0)),
1130 mfdcr(DCRN_PEGPL_OMR1MSKL(PCIE0)));
1133 mtdcr(DCRN_PEGPL_OMR1BAH(PCIE1), CONFIG_SYS_PCIE_ADDR_HIGH);
1134 mtdcr(DCRN_PEGPL_OMR1BAL(PCIE1), CONFIG_SYS_PCIE_MEMBASE +
1135 port * CONFIG_SYS_PCIE_MEMSIZE);
1136 mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE1), 0x7fffffff);
1137 mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE1),
1138 ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
1139 debug("1:PEGPL_OMR1BA=%08x.%08x MSK=%08x.%08x\n",
1140 mfdcr(DCRN_PEGPL_OMR1BAH(PCIE1)),
1141 mfdcr(DCRN_PEGPL_OMR1BAL(PCIE1)),
1142 mfdcr(DCRN_PEGPL_OMR1MSKH(PCIE1)),
1143 mfdcr(DCRN_PEGPL_OMR1MSKL(PCIE1)));
1145 #if CONFIG_SYS_PCIE_NR_PORTS > 2
1147 mtdcr(DCRN_PEGPL_OMR1BAH(PCIE2), CONFIG_SYS_PCIE_ADDR_HIGH);
1148 mtdcr(DCRN_PEGPL_OMR1BAL(PCIE2), CONFIG_SYS_PCIE_MEMBASE +
1149 port * CONFIG_SYS_PCIE_MEMSIZE);
1150 mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE2), 0x7fffffff);
1151 mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE2),
1152 ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
1153 debug("2:PEGPL_OMR1BA=%08x.%08x MSK=%08x.%08x\n",
1154 mfdcr(DCRN_PEGPL_OMR1BAH(PCIE2)),
1155 mfdcr(DCRN_PEGPL_OMR1BAL(PCIE2)),
1156 mfdcr(DCRN_PEGPL_OMR1MSKH(PCIE2)),
1157 mfdcr(DCRN_PEGPL_OMR1MSKL(PCIE2)));
1162 /* Set up 4GB inbound memory window at 0 */
1163 out_le32(mbase + PCI_BASE_ADDRESS_0, 0);
1164 out_le32(mbase + PCI_BASE_ADDRESS_1, 0);
1165 out_le32(mbase + PECFG_BAR0HMPA, 0x7ffffff);
1166 out_le32(mbase + PECFG_BAR0LMPA, 0);
1168 out_le32(mbase + PECFG_PIM01SAH, 0xffff0000);
1169 out_le32(mbase + PECFG_PIM01SAL, 0x00000000);
1170 out_le32(mbase + PECFG_PIM0LAL, 0);
1171 out_le32(mbase + PECFG_PIM0LAH, 0);
1172 out_le32(mbase + PECFG_PIM1LAL, 0x00000000);
1173 out_le32(mbase + PECFG_PIM1LAH, 0x00000004);
1174 out_le32(mbase + PECFG_PIMEN, 0x1);
1176 /* Enable I/O, Mem, and Busmaster cycles */
1177 out_le16((u16 *)(mbase + PCI_COMMAND),
1178 in_le16((u16 *)(mbase + PCI_COMMAND)) |
1179 PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
1181 /* Set Device and Vendor Id */
1182 out_le16(mbase + 0x200, 0xaaa0 + port);
1183 out_le16(mbase + 0x202, 0xbed0 + port);
1185 /* Set Class Code to PCI-PCI bridge and Revision Id to 1 */
1186 out_le32(mbase + 0x208, 0x06040001);
1188 printf("PCIE%d: successfully set as root-complex\n", port);
1191 int ppc4xx_setup_pcie_endpoint(struct pci_controller *hose, int port)
1193 volatile void *mbase = NULL;
1197 pcie_read_config_byte,
1198 pcie_read_config_word,
1199 pcie_read_config_dword,
1200 pcie_write_config_byte,
1201 pcie_write_config_word,
1202 pcie_write_config_dword);
1206 mbase = (u32 *)CONFIG_SYS_PCIE0_XCFGBASE;
1207 hose->cfg_data = (u8 *)CONFIG_SYS_PCIE0_CFGBASE;
1210 mbase = (u32 *)CONFIG_SYS_PCIE1_XCFGBASE;
1211 hose->cfg_data = (u8 *)CONFIG_SYS_PCIE1_CFGBASE;
1213 #if defined(CONFIG_SYS_PCIE2_CFGBASE)
1215 mbase = (u32 *)CONFIG_SYS_PCIE2_XCFGBASE;
1216 hose->cfg_data = (u8 *)CONFIG_SYS_PCIE2_CFGBASE;
1222 * Set up outbound translation to hose->mem_space from PLB
1223 * addresses at an offset of 0xd_0000_0000. We set the low
1224 * bits of the mask to 11 to turn off splitting into 8
1225 * subregions and to enable the outbound translation.
1227 out_le32(mbase + PECFG_POM0LAH, 0x00001ff8);
1228 out_le32(mbase + PECFG_POM0LAL, 0x00001000);
1232 mtdcr(DCRN_PEGPL_OMR1BAH(PCIE0), CONFIG_SYS_PCIE_ADDR_HIGH);
1233 mtdcr(DCRN_PEGPL_OMR1BAL(PCIE0), CONFIG_SYS_PCIE_MEMBASE +
1234 port * CONFIG_SYS_PCIE_MEMSIZE);
1235 mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE0), 0x7fffffff);
1236 mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE0),
1237 ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
1240 mtdcr(DCRN_PEGPL_OMR1BAH(PCIE1), CONFIG_SYS_PCIE_ADDR_HIGH);
1241 mtdcr(DCRN_PEGPL_OMR1BAL(PCIE1), CONFIG_SYS_PCIE_MEMBASE +
1242 port * CONFIG_SYS_PCIE_MEMSIZE);
1243 mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE1), 0x7fffffff);
1244 mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE1),
1245 ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
1247 #if CONFIG_SYS_PCIE_NR_PORTS > 2
1249 mtdcr(DCRN_PEGPL_OMR1BAH(PCIE2), CONFIG_SYS_PCIE_ADDR_HIGH);
1250 mtdcr(DCRN_PEGPL_OMR1BAL(PCIE2), CONFIG_SYS_PCIE_MEMBASE +
1251 port * CONFIG_SYS_PCIE_MEMSIZE);
1252 mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE2), 0x7fffffff);
1253 mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE2),
1254 ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
1259 /* Set up 64MB inbound memory window at 0 */
1260 out_le32(mbase + PCI_BASE_ADDRESS_0, 0);
1261 out_le32(mbase + PCI_BASE_ADDRESS_1, 0);
1263 out_le32(mbase + PECFG_PIM01SAH, 0xffffffff);
1264 out_le32(mbase + PECFG_PIM01SAL, 0xfc000000);
1267 out_le32(mbase + PECFG_BAR0HMPA, 0x7fffffff);
1268 out_le32(mbase + PECFG_BAR0LMPA, 0xfc000000 | PCI_BASE_ADDRESS_MEM_TYPE_64);
1270 /* Disable BAR1 & BAR2 */
1271 out_le32(mbase + PECFG_BAR1MPA, 0);
1272 out_le32(mbase + PECFG_BAR2HMPA, 0);
1273 out_le32(mbase + PECFG_BAR2LMPA, 0);
1275 out_le32(mbase + PECFG_PIM0LAL, U64_TO_U32_LOW(CONFIG_SYS_PCIE_INBOUND_BASE));
1276 out_le32(mbase + PECFG_PIM0LAH, U64_TO_U32_HIGH(CONFIG_SYS_PCIE_INBOUND_BASE));
1277 out_le32(mbase + PECFG_PIMEN, 0x1);
1279 /* Enable I/O, Mem, and Busmaster cycles */
1280 out_le16((u16 *)(mbase + PCI_COMMAND),
1281 in_le16((u16 *)(mbase + PCI_COMMAND)) |
1282 PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
1283 out_le16(mbase + 0x200, 0xcaad); /* Setting vendor ID */
1284 out_le16(mbase + 0x202, 0xfeed); /* Setting device ID */
1286 /* Set Class Code to Processor/PPC */
1287 out_le32(mbase + 0x208, 0x0b200001);
1290 while(!(SDR_READ(SDRN_PESDR_RCSSTS(port)) & (1 << 8))) {
1291 if (!(attempts--)) {
1292 printf("PCIE%d: BME not active\n", port);
1298 printf("PCIE%d: successfully set as endpoint\n", port);
1302 #endif /* CONFIG_440SPE && CONFIG_PCI */