2 * Copyright (C) Freescale Semiconductor,Inc.
3 * 2005, 2006. All rights reserved.
5 * Ed Swarthout (ed.swarthout@freescale.com)
6 * Jason Jin (Jason.jin@freescale.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.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 * PCIE Configuration space access support for PCIE Bridge
33 #if defined(CONFIG_PCI)
35 pci_mpc86xx_init(struct pci_controller *hose)
37 volatile immap_t *immap = (immap_t *) CFG_CCSRBAR;
38 volatile ccsr_pex_t *pcie1 = &immap->im_pex1;
42 volatile ccsr_gur_t *gur = &immap->im_gur;
43 uint host1_agent = (gur->porbmsr & MPC86xx_PORBMSR_HA) >> 17;
44 uint pcie1_host = (host1_agent == 2) || (host1_agent == 3);
45 uint pcie1_agent = (host1_agent == 0) || (host1_agent == 1);
46 uint devdisr = gur->devdisr;
47 uint io_sel = (gur->pordevsr & MPC86xx_PORDEVSR_IO_SEL) >> 16;
49 if ((io_sel == 2 || io_sel == 3 || io_sel == 5 || io_sel == 6 ||
50 io_sel == 7 || io_sel == 0xf)
51 && !(devdisr & MPC86xx_DEVDISR_PCIEX1)) {
52 printf("PCI-EXPRESS 1: Configured as %s \n",
53 pcie1_agent ? "Agent" : "Host");
55 return; /*Don't scan bus when configured as agent */
56 printf(" Scanning PCIE bus");
57 debug("0x%08x=0x%08x ",
60 if (pcie1->pme_msg_det) {
61 pcie1->pme_msg_det = 0xffffffff;
62 debug(" with errors. Clearing. Now 0x%08x",
67 printf("PCI-EXPRESS 1 disabled!\n");
72 * Set first_bus=0 only skipped B0:D0:F0 which is
73 * a reserved device in M1575, but make it easy for
74 * most of the scan process.
76 hose->first_busno = 0x00;
77 hose->last_busno = 0xfe;
79 pcie_setup_indirect(hose, (CFG_IMMR + 0x8000), (CFG_IMMR + 0x8004));
81 pci_hose_read_config_word(hose,
82 PCI_BDF(0, 0, 0), PCI_COMMAND, &temp16);
83 temp16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER |
84 PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
85 pci_hose_write_config_word(hose,
86 PCI_BDF(0, 0, 0), PCI_COMMAND, temp16);
88 pci_hose_write_config_word(hose, PCI_BDF(0, 0, 0), PCI_STATUS, 0xffff);
89 pci_hose_write_config_byte(hose,
90 PCI_BDF(0, 0, 0), PCI_LATENCY_TIMER, 0x80);
92 pci_hose_read_config_dword(hose, PCI_BDF(0, 0, 0), PCI_PRIMARY_BUS,
94 temp32 = (temp32 & 0xff000000) | (0xff) | (0x0 << 8) | (0xfe << 16);
95 pci_hose_write_config_dword(hose, PCI_BDF(0, 0, 0), PCI_PRIMARY_BUS,
103 pcie1->powbar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff;
104 pcie1->powar1 = 0x8004401c; /* 512M MEM space */
105 pcie1->potar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff;
106 pcie1->potear1 = 0x00000000;
108 pcie1->powbar2 = (CFG_PCI1_IO_BASE >> 12) & 0x000fffff;
109 pcie1->powar2 = 0x80088017; /* 16M IO space */
110 pcie1->potar2 = 0x00000000;
111 pcie1->potear2 = 0x00000000;
113 pcie1->pitar1 = 0x00000000;
114 pcie1->piwbar1 = 0x00000000;
115 /* Enable, Prefetch, Local Mem, * Snoop R/W, 2G */
116 pcie1->piwar1 = 0xa0f5501e;
118 pci_set_region(hose->regions + 0,
122 PCI_REGION_MEM | PCI_REGION_MEMORY);
124 pci_set_region(hose->regions + 1,
130 pci_set_region(hose->regions + 2,
136 hose->region_count = 3;
138 pci_register_hose(hose);
140 hose->last_busno = pci_hose_scan(hose);
141 debug("pcie_mpc86xx_init: last_busno %x\n", hose->last_busno);
142 debug("pcie_mpc86xx init: current_busno %x\n ", hose->current_busno);
144 printf("....PCIE1 scan & enumeration done\n");
146 #endif /* CONFIG_PCI */