/* * (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_SIM static 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(CONFIG_SYS_PCI9054_DEV_FN, PCI_COMMAND, &status); status |= PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY; pci_write_config_word(CONFIG_SYS_PCI9054_DEV_FN, PCI_COMMAND, status); /* Check the latency timer for values >= 0x60. */ pci_read_config_byte(CONFIG_SYS_PCI9054_DEV_FN, PCI_LATENCY_TIMER, &timer); if (timer < 0x60) { pci_write_config_byte(CONFIG_SYS_PCI9054_DEV_FN, PCI_LATENCY_TIMER, 0x60); } /* Set I/O base register. */ pci_write_config_dword(CONFIG_SYS_PCI9054_DEV_FN, PCI_BASE_ADDRESS_0, CONFIG_SYS_PCI9054_IOBASE); pci_read_config_dword(CONFIG_SYS_PCI9054_DEV_FN, PCI_BASE_ADDRESS_0, &iobase); pci9054_iobase = pci_mem_to_phys(CONFIG_SYS_PCI9054_DEV_FN, iobase & PCI_BASE_ADDRESS_MEM_MASK); if (pci9054_iobase == 0xffffffff) { printf("Error: Can not set I/O base register.\n"); return; } } #endif static struct pci_config_table pci9054_config_table[] = { #ifndef CONFIG_PCI_PNP { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_BUS(CONFIG_SYS_ETH_DEV_FN), PCI_DEV(CONFIG_SYS_ETH_DEV_FN), PCI_FUNC(CONFIG_SYS_ETH_DEV_FN), pci_cfgfunc_config_device, { CONFIG_SYS_ETH_IOBASE, CONFIG_SYS_ETH_IOBASE, PCI_COMMAND_IO | PCI_COMMAND_MASTER }}, #ifdef CONFIG_DASA_SIM { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_BUS(CONFIG_SYS_PCI9054_DEV_FN), PCI_DEV(CONFIG_SYS_PCI9054_DEV_FN), PCI_FUNC(CONFIG_SYS_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_SYS_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); }