diff options
Diffstat (limited to 'cpu/mpc86xx/pci.c')
| -rw-r--r-- | cpu/mpc86xx/pci.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/cpu/mpc86xx/pci.c b/cpu/mpc86xx/pci.c new file mode 100644 index 0000000..05976bd --- /dev/null +++ b/cpu/mpc86xx/pci.c @@ -0,0 +1,163 @@ +/* + * Copyright 2005 Freescale Semiconductor. + * Ed Swarthout (ed.swarthout@freescale.com) + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * PEX Configuration space access support for PEX Bridge + */ +#include <common.h> +#include <pci.h> + + +#if defined(CONFIG_PCI) + +void +pci_mpc86xx_init(struct pci_controller *hose) +{ + volatile immap_t *immap = (immap_t *)CFG_CCSRBAR; + volatile ccsr_pex_t *pex1 = &immap->im_pex1; + volatile ccsr_gur_t *gur = &immap->im_gur; + uint host1_agent = (gur->porbmsr & MPC86xx_PORBMSR_HA) >> 17; + uint pex1_host = (host1_agent == 2) || (host1_agent == 3); + + u16 reg16, reg16_1, reg16_2, reg16_3; + u32 reg32, i; + + ulong addr, data; + + uint pex1_agent = (host1_agent == 0) || (host1_agent == 1); + uint devdisr = gur->devdisr; + uint io_sel = (gur->pordevsr & MPC86xx_PORDEVSR_IO_SEL) >> 16; + + if ((io_sel==2 || io_sel==3 || io_sel==5 + || io_sel==6 || io_sel==7 || io_sel==0xF ) + && !(devdisr & MPC86xx_DEVDISR_PCIEX1)){ + printf ("PCI-EXPRESS 1: Configured as %s \n", + pex1_agent ? "Agent" : "Host"); + printf (" Scanning PCI bus"); + debug("0x%08x=0x%08x ", &pex1->pme_msg_det,pex1->pme_msg_det); + if (pex1->pme_msg_det) { + pex1->pme_msg_det = 0xffffffff; + debug (" with errors. Clearing. Now 0x%08x", + pex1->pme_msg_det); + } + debug ("\n"); + } + + hose->first_busno = 0; + hose->last_busno = 0x7f; + + pci_set_region(hose->regions + 0, + CFG_PCI1_MEM_BASE, + CFG_PCI1_MEM_PHYS, + CFG_PCI1_MEM_SIZE, + PCI_REGION_MEM); + + pci_set_region(hose->regions + 1, + CFG_PCI1_IO_BASE, + CFG_PCI1_IO_PHYS, + CFG_PCI1_IO_SIZE, + PCI_REGION_IO); + + hose->region_count = 2; + + pci_setup_indirect(hose, + (CFG_IMMR+0x8000), + (CFG_IMMR+0x8004)); + + /* + * Hose scan. + */ + pci_register_hose(hose); + + pci_read_config_word (PCI_BDF(0,0,0), PCI_VENDOR_ID, ®16); + debug("pex_mpc86xx_init: read %2x %4x\n",PCI_VENDOR_ID, reg16); + pci_read_config_word (PCI_BDF(0,0,0), PCI_DEVICE_ID, ®16); + debug("pex_mpc86xx_init: read %2x %4x\n",PCI_DEVICE_ID, reg16); + + pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, ®16); + reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY \ + | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; + pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg16); + + pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, ®16); + debug("pex_mpc86xx_init: read %2x %4x\n",PCI_COMMAND, reg16); + + /* + * Clear non-reserved bits in status register. + */ + /* + * pci_write_config_word(PCI_BDF(0,0,0), PCI_STATUS, 0xffff); + * pci_write_config_byte(PCI_BDF(0,0,0), PCI_LATENCY_TIMER,0x80); + */ + + pex1->powbar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff; + pex1->powar1 = 0x8004401c; /* 512M MEM space */ + pex1->potar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff; + pex1->potear1 = 0x00000000; + + pex1->powbar2 = (CFG_PCI1_IO_BASE >> 12) & 0x000fffff; + pex1->powar2 = 0x80088017; /* 16M IO space */ + pex1->potar2 = 0x00000000; + pex1->potear2 = 0x00000000; + + if (!pex1->piwar1) { + pex1->pitar1 = 0x00000000; + pex1->piwbar1 = (0x80000000 >> 12 ) & 0x000fffff; + pex1->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local Mem, + * Snoop R/W, 2G */ + } + + pex1->pitar2 = 0x00000000; + pex1->piwbar2 = (0xe2000000 >> 12 ) & 0x000fffff; + pex1->piwar2 = 0xa0f5501e; /* Enable, Prefetch, Local Mem, + * Snoop R/W, 2G */ + + *(u32 *)(0xf8008000)= 0x80000000; + debug("Received data for addr 0x%08lx is 0x%08lx\n", + *(u32*)(0xf8008000), *(u32*)(0xf8008004)); + + pci_write_config_byte(PCI_BDF(0,0,0), PCI_PRIMARY_BUS,0x20); + pci_write_config_byte(PCI_BDF(0,0,0), PCI_SECONDARY_BUS,0x00); + pci_write_config_byte(PCI_BDF(0,0,0), PCI_SUBORDINATE_BUS,0x1F); + + *(u32 *)(0xf8008000)= 0x80200000; + debug("Received data for addr 0x%08lx is 0x%08lx\n", + *(u32*)(0xf8008000), *(u32*)(0xf8008004)); + + *(u32 *)(0xf8008000)= 0x80200000; + debug("Received data for addr 0x%08lx is 0x%08lx\n", + *(u32*)(0xf8008000), *(u32*)(0xf8008004)); + + *(u32 *)(0xf8008000)= 0x80200000; + debug("Received data for addr 0x%08lx is 0x%08lx\n", + *(u32*)(0xf8008000), *(u32*)(0xf8008004)); + + hose->last_busno = pci_hose_scan(hose); + hose->last_busno = 0x21; + debug("pex_mpc86xx_init: last_busno %x\n",hose->last_busno); + debug("pex_mpc86xx init: current_busno %x\n ",hose->current_busno); + + printf("....PCI scan & enumeration done\n"); +} + +#endif /* CONFIG_PCI */ |