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/*
* 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 MPC85xx 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);
//#define MPC8548_REV1_PEX12_ERRATA
#ifdef MPC8548_REV1_PEX12_ERRATA
/* can only read/write 4 bytes */
pci_read_config_dword (PCI_BDF(0,0,0), PCI_VENDOR_ID, ®32);
printf("pex_mpc85xx_init: pex cr %2x %8x\n",PCI_VENDOR_ID, reg32);
pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, ®32);
reg32 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg32);
#else
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);
#endif
/*
* 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,
/* if (pex1_host) { */
/* #ifdef MPC8548_REV1_PEX12_ERRATA */
/* pci_write_config_dword (PCI_BDF(0,0,0), 0x18, 0x00ff0100); */
/* #else */
*(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);
/* #endif */
*(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");
/* *(u32 *)(0xf8008000)= 0x80000000 | (0x12 << 11); */
/* printf("Received data for addr 0x%08lx is 0x%08lx\n", *(u32*)(0xf8008000), *(u32*)(0xf8008004)); */
/* if (hose->last_busno < 1) { */
/* hose->last_busno=1; /\*Hack*\/ */
/* } else { */
/* hose->last_busno = 0; */
/* } */
/*}*/
/* pci_read_config_dword (PCI_BDF(1,0,0), 0x18, ®32); */
/* printf("pex_mpc86xx_init: pex cr %2x %8x\n",0x18, reg32); */
}
#endif /* CONFIG_PCI */
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