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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* 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; version 2 of the License.
*
* 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.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <lib.h>
#include <arch/acpi.h>
#include "rs690.h"
static void ht_dev_set_resources(struct device *dev)
{
#if IS_ENABLED(CONFIG_EXT_CONF_SUPPORT)
unsigned reg;
struct device *k8_f1;
resource_t rbase, rend;
u32 base, limit;
struct resource *resource;
printk(BIOS_DEBUG,"%s %s\n", dev_path(dev), __func__);
resource = probe_resource(dev, 0x1C);
if (resource) {
set_nbmisc_enable_bits(dev, 0x0, 1 << 3, 0 << 3); // make bar3 visible
set_nbcfg_enable_bits(dev, 0x7C, 1 << 30, 1 << 30); /* Enables writes to the BAR3 register. */
set_nbcfg_enable_bits(dev, 0x84, 7 << 16, 0 << 16); // program bus range: 255 busses
pci_write_config32(dev, 0x1C, resource->base);
/* Enable MMCONFIG decoding. */
set_htiu_enable_bits(dev, 0x32, 1 << 28, 1 << 28); /* PCIEMiscInit */
set_nbcfg_enable_bits(dev, 0x7C, 1 << 30, 0 << 30); /* Disable writes to the BAR3 register. */
set_nbmisc_enable_bits(dev, 0x0, 1 << 3, 1 << 3); // hide bar 3
// setup resource nonposted in k8 mmio
/* Get the base address */
rbase = resource->base;
/* Get the limit (rounded up) */
rend = resource_end(resource);
printk(BIOS_DEBUG,"%s: %s[0x1C] base = %0llx limit = %0llx\n", __func__, dev_path(dev), rbase, rend);
k8_f1 = dev_find_slot(0,PCI_DEVFN(0x18,1));
// find a not assigned resource
for ( reg = 0xb8; reg >= 0x80; reg -= 8 ) {
base = pci_read_config32(k8_f1,reg);
limit = pci_read_config32(k8_f1,reg+4);
if ( !(base & 3) ) break; // found a not assigned resource
}
if ( !(base & 3) ) {
u32 sblk;
struct device *k8_f0 =
dev_find_slot(0, PCI_DEVFN(0x18, 0));
/* Remember this resource has been stored. */
resource->flags |= IORESOURCE_STORED;
report_resource_stored(dev, resource, " <mmconfig>");
/* Get SBLink value (HyperTransport I/O Hub Link ID). */
sblk = (pci_read_config32(k8_f0, 0x64) >> 8) & 0x3;
base &= 0x000000f0;
base |= ((rbase >> 8) & 0xffffff00);
base |= 3;
limit &= 0x00000048;
limit |= ((rend >> 8) & 0xffffff00);
limit |= (sblk << 4);
limit |= (1 << 7);
printk(BIOS_INFO, "%s <- index %x base %04x limit %04x\n", dev_path(k8_f1), reg, base, limit);
pci_write_config32(k8_f1, reg+4, limit);
pci_write_config32(k8_f1, reg, base);
}
}
#endif
pci_dev_set_resources(dev);
}
unsigned long acpi_fill_mcfg(unsigned long current)
{
#if IS_ENABLED(CONFIG_EXT_CONF_SUPPORT)
struct resource *res;
resource_t mmconf_base = EXT_CONF_BASE_ADDRESS; // default
struct device *dev = dev_find_slot(0,PCI_DEVFN(0,0));
// we report mmconf base
res = probe_resource(dev, 0x1C);
if ( res )
mmconf_base = res->base;
current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)current, mmconf_base, 0x0, 0x0, 0x1f); // Fix me: should i reserve 255 busses ?
#endif
return current;
}
static void ht_dev_read_resources(struct device *dev)
{
#if IS_ENABLED(CONFIG_EXT_CONF_SUPPORT)
struct resource *res;
printk(BIOS_DEBUG,"%s %s\n", dev_path(dev), __func__);
set_nbmisc_enable_bits(dev, 0x0, 1 << 3, 1 << 3); // hide bar 3
#endif
pci_dev_read_resources(dev);
#if IS_ENABLED(CONFIG_EXT_CONF_SUPPORT)
/* Add an MMCONFIG resource. */
res = new_resource(dev, 0x1C);
res->base = EXT_CONF_BASE_ADDRESS;
res->size = 256 * 1024 * 1024; // 256 busses, 1MB memory space each
res->align = log2(res->size);
res->gran = log2(res->size);
res->limit = 0xffffffffffffffffULL; /* 64bit */
res->flags = IORESOURCE_FIXED | IORESOURCE_MEM | IORESOURCE_PCI64 |
IORESOURCE_ASSIGNED | IORESOURCE_RESERVE;
compact_resources(dev);
#endif
}
/* for UMA internal graphics */
void avoid_lpc_dma_deadlock(struct device *nb_dev, struct device *sb_dev)
{
struct device *k8_f0;
u8 reg;
k8_f0 = dev_find_slot(0, PCI_DEVFN(0x18, 0));
set_nbcfg_enable_bits(k8_f0, 0x68, 3 << 21, 1 << 21);
reg = nbpcie_p_read_index(sb_dev, 0x10);
reg |= 0x100; /* bit9=1 */
nbpcie_p_write_index(sb_dev, 0x10, reg);
reg = nbpcie_p_read_index(nb_dev, 0x10);
reg |= 0x100; /* bit9=1 */
nbpcie_p_write_index(nb_dev, 0x10, reg);
/* Enable NP protocol over PCIE for memory-mapped writes targeting LPC
* Set this bit to avoid a deadlock condition. */
reg = htiu_read_index(nb_dev, 0x6);
reg |= 0x1000000; /* bit26 */
htiu_write_index(nb_dev, 0x6, reg);
}
static void pcie_init(struct device *dev)
{
/* Enable pci error detecting */
u32 dword;
printk(BIOS_INFO, "pcie_init in rs690_ht.c\n");
/* System error enable */
dword = pci_read_config32(dev, 0x04);
dword |= (1 << 8); /* System error enable */
dword |= (1 << 30); /* Clear possible errors */
pci_write_config32(dev, 0x04, dword);
/*
* 1 is APIC enable
* 18 is enable nb to accept A4 interrupt request from SB.
*/
dword = pci_read_config32(dev, 0x4C);
dword |= 1 << 1 | 1 << 18; /* Clear possible errors */
pci_write_config32(dev, 0x4C, dword);
}
static void ht_dev_set_subsystem(struct device *dev, unsigned vendor,
unsigned device)
{
pci_write_config32(dev, 0x50, ((device & 0xffff) << 16) | (vendor & 0xffff));
}
static struct pci_operations lops_pci = {
.set_subsystem = ht_dev_set_subsystem,
};
static struct device_operations ht_ops = {
.read_resources = ht_dev_read_resources,
.set_resources = ht_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = pcie_init,
.scan_bus = 0,
.ops_pci = &lops_pci,
};
static const struct pci_driver ht_driver __pci_driver = {
.ops = &ht_ops,
.vendor = PCI_VENDOR_ID_ATI,
.device = PCI_DEVICE_ID_ATI_RS690_HT,
};
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