/* * (C) Copyright 2001 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.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 */#include <common.h>#include <ppc4xx.h>#include <asm/processor.h>#include <pci.h>u_long pci9054_iobase;#define PCI_PRIMARY_CAR	(0x500000dc) /* PCI config address reg */#define PCI_PRIMARY_CDR	(0x80000000) /* PCI config data    reg *//*-----------------------------------------------------------------------------+|  Subroutine:  pci9054_read_config_dword|  Description: Read a PCI configuration register|  Inputs:|               hose            PCI Controller|               dev             PCI Bus+Device+Function number|               offset          Configuration register number|               value           Address of the configuration register value|  Return value:|               0               Successful+-----------------------------------------------------------------------------*/int pci9054_read_config_dword(struct pci_controller *hose,			      pci_dev_t dev, int offset, u32* value){  unsigned long      conAdrVal;  unsigned long      val;  /* generate coded value for CON_ADR register */  conAdrVal = dev | (offset & 0xfc) | 0x80000000;  /* Load the CON_ADR (CAR) value first, then read from CON_DATA (CDR) */  *(unsigned long *)PCI_PRIMARY_CAR = conAdrVal;  /* Note: *pResult comes back as -1 if machine check happened */  val = in32r(PCI_PRIMARY_CDR);  *value = (unsigned long) val;  out32r(PCI_PRIMARY_CAR, 0);  if ((*(unsigned long *)0x50000304) & 0x60000000)    {      /* clear pci master/target abort bits */      *(unsigned long *)0x50000304 = *(unsigned long *)0x50000304;    }  return 0;}/*-----------------------------------------------------------------------------+|  Subroutine:  pci9054_write_config_dword|  Description: Write a PCI configuration register.|  Inputs:|               hose            PCI Controller|               dev             PCI Bus+Device+Function number|               offset          Configuration register number|               Value           Configuration register value|  Return value:|               0               Successful| Updated for pass2 errata #6. Need to disable interrupts and clear the| PCICFGADR reg after writing the PCICFGDATA reg.+-----------------------------------------------------------------------------*/int pci9054_write_config_dword(struct pci_controller *hose,			       pci_dev_t dev, int offset, u32 value){  unsigned long      conAdrVal;  conAdrVal = dev | (offset & 0xfc) | 0x80000000;  *(unsigned long *)PCI_PRIMARY_CAR = conAdrVal;  out32r(PCI_PRIMARY_CDR, value);  out32r(PCI_PRIMARY_CAR, 0);  /* clear pci master/target abort bits */  *(unsigned long *)0x50000304 = *(unsigned long *)0x50000304;  return (0);}/*----------------------------------------------------------------------- */#ifdef CONFIG_DASA_SIMstatic void pci_dasa_sim_config_pci9054(struct pci_controller *hose, pci_dev_t dev,					struct pci_config_table *_){  unsigned int iobase;  unsigned short status = 0;  unsigned char timer;  /*   * Configure PLX PCI9054   */  pci_read_config_word(CFG_PCI9054_DEV_FN, PCI_COMMAND, &status);  status |= PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;  pci_write_config_word(CFG_PCI9054_DEV_FN, PCI_COMMAND, status);  /* Check the latency timer for values >= 0x60.   */  pci_read_config_byte(CFG_PCI9054_DEV_FN, PCI_LATENCY_TIMER, &timer);  if (timer < 0x60)    {      pci_write_config_byte(CFG_PCI9054_DEV_FN, PCI_LATENCY_TIMER, 0x60);    }  /* Set I/O base register.   */  pci_write_config_dword(CFG_PCI9054_DEV_FN, PCI_BASE_ADDRESS_0, CFG_PCI9054_IOBASE);  pci_read_config_dword(CFG_PCI9054_DEV_FN, PCI_BASE_ADDRESS_0, &iobase);  pci9054_iobase = pci_mem_to_phys(CFG_PCI9054_DEV_FN, iobase & PCI_BASE_ADDRESS_MEM_MASK);  if (pci9054_iobase == 0xffffffff)    {      printf("Error: Can not set I/O base register.\n");      return;    }}#endifstatic struct pci_config_table pci9054_config_table[] = {#ifndef CONFIG_PCI_PNP  { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,    PCI_BUS(CFG_ETH_DEV_FN), PCI_DEV(CFG_ETH_DEV_FN), PCI_FUNC(CFG_ETH_DEV_FN),    pci_cfgfunc_config_device, { CFG_ETH_IOBASE,				 CFG_ETH_IOBASE,				 PCI_COMMAND_IO | PCI_COMMAND_MASTER }},#ifdef CONFIG_DASA_SIM  { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,    PCI_BUS(CFG_PCI9054_DEV_FN), PCI_DEV(CFG_PCI9054_DEV_FN), PCI_FUNC(CFG_PCI9054_DEV_FN),    pci_dasa_sim_config_pci9054 },#endif#endif  { }};static struct pci_controller pci9054_hose = {  config_table: pci9054_config_table,};void pci_init(void){  struct pci_controller *hose = &pci9054_hose;  /*   * Register the hose   */  hose->first_busno = 0;  hose->last_busno = 0xff;  /* System memory space */  pci_set_region(hose->regions + 0,		 0x00000000, 0x00000000, 0x01000000,		 PCI_REGION_MEM | PCI_REGION_MEMORY);  /* PCI Memory space */  pci_set_region(hose->regions + 1,		 0x00000000, 0xc0000000, 0x10000000,		 PCI_REGION_MEM);  pci_set_ops(hose,	      pci_hose_read_config_byte_via_dword,	      pci_hose_read_config_word_via_dword,	      pci9054_read_config_dword,	      pci_hose_write_config_byte_via_dword,	      pci_hose_write_config_word_via_dword,	      pci9054_write_config_dword);  hose->region_count = 2;  pci_register_hose(hose);  hose->last_busno = pci_hose_scan(hose);}