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) && !(devdisr & MPC86xx_DEVDISR_PCIEX1)){
51 printf ("PCI-EXPRESS 1: Configured as %s \n",
52 pcie1_agent ? "Agent" : "Host");
53 if(pcie1_agent) return; /*Don't scan bus when configured as agent*/
54 printf (" Scanning PCIE bus");
55 debug("0x%08x=0x%08x ", &pcie1->pme_msg_det,pcie1->pme_msg_det);
56 if (pcie1->pme_msg_det) {
57 pcie1->pme_msg_det = 0xffffffff;
58 debug (" with errors. Clearing. Now 0x%08x",
64 printf("PCI-EXPRESS 1 disabled!\n");
68 /*set first_bus=0 only skipped B0:D0:F0 which is
69 * a reserved device in M1575, but make it easy for
70 * most of the scan process.
72 hose->first_busno = 0x00;
73 hose->last_busno = 0xfe;
75 pcie_setup_indirect(hose,
79 pci_hose_read_config_word(hose, PCI_BDF(0,0,0), PCI_COMMAND, &temp16);
80 temp16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER |
81 PCI_COMMAND_MEMORY | PCI_COMMAND_IO;
82 pci_hose_write_config_word(hose, PCI_BDF(0,0,0), PCI_COMMAND, temp16);
84 pci_hose_write_config_word(hose,PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
85 pci_hose_write_config_byte(hose, PCI_BDF(0,0,0), PCI_LATENCY_TIMER, 0x80);
87 pci_hose_read_config_dword(hose, PCI_BDF(0,0,0), PCI_PRIMARY_BUS, &temp32);
88 temp32 = (temp32 & 0xff000000) | (0xff) | (0x0 << 8) | (0xfe << 16);
89 pci_hose_write_config_dword(hose, PCI_BDF(0,0,0), PCI_PRIMARY_BUS, temp32);
96 pcie1->powbar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff;
97 pcie1->powar1 = 0x8004401c; /* 512M MEM space */
98 pcie1->potar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff;
99 pcie1->potear1 = 0x00000000;
101 pcie1->powbar2 = (CFG_PCI1_IO_BASE >> 12) & 0x000fffff;
102 pcie1->powar2 = 0x80088017; /* 16M IO space */
103 pcie1->potar2 = 0x00000000;
104 pcie1->potear2 = 0x00000000;
106 pcie1->pitar1 = 0x00000000;
107 pcie1->piwbar1 = 0x00000000;
108 /* Enable, Prefetch, Local Mem, * Snoop R/W, 2G */
109 pcie1->piwar1 = 0xa0f5501e;
111 pci_set_region(hose->regions + 0,
115 PCI_REGION_MEM | PCI_REGION_MEMORY);
117 pci_set_region(hose->regions + 1,
123 pci_set_region(hose->regions + 2,
129 hose->region_count = 3;
131 pci_register_hose(hose);
133 hose->last_busno = pci_hose_scan(hose);
134 debug("pcie_mpc86xx_init: last_busno %x\n",hose->last_busno);
135 debug("pcie_mpc86xx init: current_busno %x\n ",hose->current_busno);
137 printf("....PCIE1 scan & enumeration done\n");
139 #endif /* CONFIG_PCI */