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/*
* Copyright (c) 2011 The Chromium OS Authors.
* (C) Copyright 2008,2009
* Graeme Russ, <graeme.russ@gmail.com>
*
* (C) Copyright 2002
* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <pci.h>
#include <asm/pci.h>
#include <asm/arch/bd82x6x.h>
#include <asm/arch/pch.h>
static void config_pci_bridge(struct pci_controller *hose, pci_dev_t dev,
struct pci_config_table *table)
{
u8 secondary;
hose->read_byte(hose, dev, PCI_SECONDARY_BUS, &secondary);
if (secondary != 0)
pci_hose_scan_bus(hose, secondary);
}
static struct pci_config_table pci_ivybridge_config_table[] = {
/* vendor, device, class, bus, dev, func */
{ PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_PCI,
PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, &config_pci_bridge },
{}
};
void board_pci_setup_hose(struct pci_controller *hose)
{
hose->config_table = pci_ivybridge_config_table;
hose->first_busno = 0;
hose->last_busno = 0;
/* PCI memory space */
pci_set_region(hose->regions + 0,
CONFIG_PCI_MEM_BUS,
CONFIG_PCI_MEM_PHYS,
CONFIG_PCI_MEM_SIZE,
PCI_REGION_MEM);
/* PCI IO space */
pci_set_region(hose->regions + 1,
CONFIG_PCI_IO_BUS,
CONFIG_PCI_IO_PHYS,
CONFIG_PCI_IO_SIZE,
PCI_REGION_IO);
pci_set_region(hose->regions + 2,
CONFIG_PCI_PREF_BUS,
CONFIG_PCI_PREF_PHYS,
CONFIG_PCI_PREF_SIZE,
PCI_REGION_PREFETCH);
hose->region_count = 3;
}
int board_pci_pre_scan(struct pci_controller *hose)
{
pci_dev_t dev;
u16 reg16;
bd82x6x_init();
reg16 = 0xff;
dev = PCH_DEV;
reg16 = pci_read_config16(dev, PCI_COMMAND);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_write_config16(dev, PCI_COMMAND, reg16);
/*
* Clear non-reserved bits in status register.
*/
pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
pci_write_bar32(hose, dev, 0, 0xf0000000);
return 0;
}
int board_pci_post_scan(struct pci_controller *hose)
{
int ret;
ret = bd82x6x_init_pci_devices();
if (ret) {
printf("bd82x6x_init_pci_devices() failed: %d\n", ret);
return ret;
}
return 0;
}
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