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coreboot-kgpe-d16/util/inteltool/pcie.c
Damien Zammit 9c98664480 inteltool: Add Intel 4-Series chipset detection 
Previously, X4X was incorrectly named because it provides
support for SKUs within XX4X range.  This is renamed.

This patch provides support for all X4X SKUs according to
datasheet Intel 4 Series Chipset Family Specification Update,
namely: Q45, Q43, P45, P43, G45, G43, G41 and B43 (both versions).

Tested on Gigabyte GA-G41M-ES2L

Change-Id: I032265e80d9ca51e2fef29201280832ea3210a0b
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: http://review.coreboot.org/11245
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2015-08-30 18:05:18 +00:00

516 lines
18 KiB
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/*
* inteltool - dump all registers on an Intel CPU + chipset based system.
*
* Copyright (C) 2008-2010 by coresystems GmbH
* Copyright (C) 2012 Anton Kochkov
*
* 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.
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include "inteltool.h"
/* 320766 */
static const io_register_t nehalem_dmi_registers[] = {
{ 0x00, 4, "DMIVCH" }, // DMI Virtual Channel Capability Header
{ 0x04, 4, "DMIVCCAP1" }, // DMI Port VC Capability Register 1
{ 0x08, 4, "DMIVCCAP2" }, // DMI Port VC Capability Register 2
{ 0x0C, 4, "DMIVCCTL" }, // DMI Port VC Control
{ 0x10, 4, "DMIVC0RCAP" }, // DMI VC0 Resource Capability
{ 0x14, 4, "DMIVC0RCTL" }, // DMI VC0 Resource Control
/* { 0x18, 2, "RSVD" }, // Reserved */
{ 0x1A, 2, "DMIVC0RSTS" }, // DMI VC0 Resource Status
{ 0x1C, 4, "DMIVC1RCAP" }, // DMI VC1 Resource Capability
{ 0x20, 4, "DMIVC1RCTL" }, // DMI VC1 Resource Control
/* { 0x24, 2, "RSVD" }, // Reserved */
{ 0x26, 2, "DMIVC1RSTS" }, // DMI VC1 Resource Status
/* ... - Reserved */
{ 0x84, 4, "DMILCAP" }, // DMI Link Capabilities
{ 0x88, 2, "DMILCTL" }, // DMI Link Control
{ 0x8A, 2, "DMILSTS" }, // DMI Link Status
/* ... - Reserved */
};
/* 322812 */
static const io_register_t westmere_dmi_registers[] = {
{ 0x00, 4, "DMIVCECH" }, // DMI Virtual Channel Enhanced Capability
{ 0x04, 4, "DMIPVCCAP1" }, // DMI Port VC Capability Register 1
{ 0x08, 4, "DMIPVCCAP2" }, // DMI Port VC Capability Register 2
{ 0x0C, 2, "DMIPVCCTL" }, // DMI Port VC Control
/* { 0x0E, 2, "RSVD" }, // Reserved */
{ 0x10, 4, "DMIVC0RCAP" }, // DMI VC0 Resource Capability
{ 0x14, 4, "DMIVC0RCTL" }, // DMI VC0 Resource Control
/* { 0x18, 2, "RSVD" }, // Reserved */
{ 0x1A, 2, "DMIVC0RSTS" }, // DMI VC0 Resource Status
{ 0x1C, 4, "DMIVC1RCAP" }, // DMI VC1 Resource Capability
{ 0x20, 4, "DMIVC1RCTL1" }, // DMI VC1 Resource Control
/* { 0x24, 2, "RSVD" }, // Reserved */
{ 0x26, 2, "DMIC1RSTS" }, // DMI VC1 Resource Status
/* ... - Reserved */
{ 0x84, 4, "DMILCAP" }, // DMI Link Capabilities
{ 0x88, 2, "DMILCTL" }, // DMI Link Control
{ 0x8A, 2, "DMILSTS" }, // DMI Link Status
/* ... - Reserved */
};
static const io_register_t sandybridge_dmi_registers[] = {
{ 0x00, 4, "DMI VCECH" }, // DMI Virtual Channel Enhanced Capability
{ 0x04, 4, "DMI PVCCAP1" }, // DMI Port VC Capability Register 1
{ 0x08, 4, "DMI PVVAP2" }, // DMI Port VC Capability Register 2
{ 0x0C, 2, "DMI PVCCTL" }, // DMI Port VC Control
/* { 0x0E, 2, "RSVD" }, // Reserved */
{ 0x10, 4, "DMI VC0RCAP" }, // DMI VC0 Resource Capability
{ 0x14, 4, "DMI VC0RCTL" }, // DMI VC0 Resource Control
/* { 0x18, 2, "RSVD" }, // Reserved */
{ 0x1A, 2, "DMI VC0RSTS" }, // DMI VC0 Resource Status
{ 0x1C, 4, "DMI VC1RCAP" }, // DMI VC1 Resource Capability
{ 0x20, 4, "DMI VC1RCTL" }, // DMI VC1 Resource Control
/* { 0x24, 2, "RSVD" }, // Reserved */
{ 0x26, 2, "DMI VC1RSTS" }, // DMI VC1 Resource Status
{ 0x28, 4, "DMI VCPRCAP" }, // DMI VCp Resource Capability
{ 0x2C, 4, "DMI VCPRCTL" }, // DMI VCp Resource Control
/* { 0x30, 2, "RSVD" }, // Reserved */
{ 0x32, 2, "DMI VCPRSTS" }, // DMI VCp Resource Status
{ 0x34, 4, "DMI VCMRCAP" }, // DMI VCm Resource Capability
{ 0x38, 4, "DMI VCMRCTL" }, // DMI VCm Resource Control
/* { 0x3C, 2, "RSVD" }, // Reserved */
{ 0x3E, 2, "DMI VCMRSTS" }, // DMI VCm Resource Status
/* { 0x40, 4, "RSVD" }, // Reserved */
{ 0x44, 4, "DMI ESC" }, // DMI Element Self Description
/* { 0x48, 8, "RSVD" }, // Reserved */
{ 0x50, 4, "DMI LE1D" }, // DMI Link Entry 1 Description
/* { 0x54, 4, "RSVD" }, // Reserved */
{ 0x58, 4, "DMI LE1A" }, // DMI Link Entry 1 Address
{ 0x5C, 4, "DMI LUE1A" }, // DMI Link Upper Entry 1 Address
{ 0x60, 4, "DMI LE2D" }, // DMI Link Entry 2 Description
/* { 0x64, 4, "RSVD" }, // Reserved */
{ 0x68, 4, "DMI LE2A" }, // DMI Link Entry 2 Address
/* { 0x6C, 4, "RSVD" }, // Reserved
{ 0x70, 8, "RSVD" }, // Reserved
{ 0x78, 8, "RSVD" }, // Reserved
{ 0x80, 4, "RSVD" }, // Reserved */
{ 0x84, 4, "LCAP" }, // Link Capabilities
{ 0x88, 2, "LCTL" }, // Link Control
{ 0x8A, 2, "LSTS" }, // Link Status
/* { 0x8C, 4, "RSVD" }, // Reserved
{ 0x90, 4, "RSVD" }, // Reserved
{ 0x94, 4, "RSVD" }, // Reserved */
{ 0x98, 2, "LCTL2" }, // Link Control 2
{ 0x9A, 2, "LSTS2" }, // Link Status 2
/* ... - Reserved */
{ 0xBC0, 4, "AFE_BMUF0" }, // AFE BMU Configuration Function 0
{ 0xBC4, 4, "RSVD" }, // Reserved
{ 0xBC8, 4, "RSVD" }, // Reserved
{ 0xBCC, 4, "AFE_BMUT0" }, // AFE BMU Configuration Test 0
/* ... - Reserved */
};
/*
* All Haswell DMI Registers per
*
* Mobile 4th Generation Intel Core TM Processor Family, Mobile Intel Pentium Processor Family,
* and Mobile Intel Celeron Processor Family
* Datasheet Volume 2
* 329002-002
*/
static const io_register_t haswell_ult_dmi_registers[] = {
{ 0x00, 4, "DMIVCECH" }, // DMI Virtual Channel Enhanced Capability
{ 0x04, 4, "DMIPVCCAP1" }, // DMI Port VC Capability Register 1
{ 0x08, 4, "DMIPVCCAP2" }, // DMI Port VC Capability Register 2
{ 0x0C, 2, "DMI PVCCTL" }, // DMI Port VC Control
/* { 0x0E, 2, "RSVD" }, // Reserved */
{ 0x10, 4, "DMIVC0RCAP" }, // DMI VC0 Resource Capability
{ 0x14, 4, "DMIVC0RCTL" }, // DMI VC0 Resource Control
/* { 0x18, 2, "RSVD" }, // Reserved */
{ 0x1A, 2, "DMIVC0RSTS" }, // DMI VC0 Resource Status
{ 0x1C, 4, "DMIVC1RCAP" }, // DMI VC1 Resource Capability
{ 0x20, 4, "DMIVC1RCTL" }, // DMI VC1 Resource Control
/* { 0x24, 2, "RSVD" }, // Reserved */
{ 0x26, 2, "DMIVC1RSTS" }, // DMI VC1 Resource Status
{ 0x28, 4, "DMIVCPRCAP" }, // DMI VCp Resource Capability
{ 0x2C, 4, "DMIVCPRCTL" }, // DMI VCp Resource Control
/* { 0x30, 2, "RSVD" }, // Reserved */
{ 0x32, 2, "DMIVCPRSTS" }, // DMI VCp Resource Status
{ 0x34, 4, "DMIVCMRCAP" }, // DMI VCm Resource Capability
{ 0x38, 4, "DMIVCMRCTL" }, // DMI VCm Resource Control
/* { 0x3C, 2, "RSVD" }, // Reserved */
{ 0x3E, 2, "DMIVCMRSTS" }, // DMI VCm Resource Status
{ 0x40, 4, "DMIRCLDECH" }, // DMI Root Complex Link Declaration */
{ 0x44, 4, "DMIESD" }, // DMI Element Self Description
/* { 0x48, 4, "RSVD" }, // Reserved */
/* { 0x4C, 4, "RSVD" }, // Reserved */
{ 0x50, 4, "DMILE1D" }, // DMI Link Entry 1 Description
/* { 0x54, 4, "RSVD" }, // Reserved */
{ 0x58, 4, "DMILE1A" }, // DMI Link Entry 1 Address
{ 0x5C, 4, "DMILUE1A" }, // DMI Link Upper Entry 1 Address
{ 0x60, 4, "DMILE2D" }, // DMI Link Entry 2 Description
/* { 0x64, 4, "RSVD" }, // Reserved */
{ 0x68, 4, "DMILE2A" }, // DMI Link Entry 2 Address
/* { 0x6C, 4, "RSVD" }, // Reserved */
/* { 0x70, 4, "RSVD" }, // Reserved */
/* { 0x74, 4, "RSVD" }, // Reserved */
/* { 0x78, 4, "RSVD" }, // Reserved */
/* { 0x7C, 4, "RSVD" }, // Reserved */
/* { 0x80, 4, "RSVD" }, // Reserved */
/* { 0x84, 4, "RSVD" }, // Reserved */
{ 0x88, 2, "LCTL" }, // Link Control
/* ... - Reserved */
{ 0x1C4, 4, "DMIUESTS" }, // DMI Uncorrectable Error Status
{ 0x1C8, 4, "DMIUEMSK" }, // DMI Uncorrectable Error Mask
{ 0x1D0, 4, "DMICESTS" }, // DMI Correctable Error Status
{ 0x1D4, 4, "DMICEMSK" }, // DMI Correctable Error Mask
/* ... - Reserved */
};
/*
* Egress Port Root Complex MMIO configuration space
*/
int print_epbar(struct pci_dev *nb)
{
int i, size = (4 * 1024);
volatile uint8_t *epbar;
uint64_t epbar_phys;
printf("\n============= EPBAR =============\n\n");
switch (nb->device_id) {
case PCI_DEVICE_ID_INTEL_82915:
case PCI_DEVICE_ID_INTEL_82945GM:
case PCI_DEVICE_ID_INTEL_82945GSE:
case PCI_DEVICE_ID_INTEL_82945P:
case PCI_DEVICE_ID_INTEL_82946:
case PCI_DEVICE_ID_INTEL_82975X:
epbar_phys = pci_read_long(nb, 0x40) & 0xfffffffe;
break;
case PCI_DEVICE_ID_INTEL_82965PM:
case PCI_DEVICE_ID_INTEL_82Q965:
case PCI_DEVICE_ID_INTEL_82Q35:
case PCI_DEVICE_ID_INTEL_82G33:
case PCI_DEVICE_ID_INTEL_82Q33:
case PCI_DEVICE_ID_INTEL_82X38:
case PCI_DEVICE_ID_INTEL_32X0:
case PCI_DEVICE_ID_INTEL_82XX4X:
case PCI_DEVICE_ID_INTEL_82Q45:
case PCI_DEVICE_ID_INTEL_82G45:
case PCI_DEVICE_ID_INTEL_82G41:
case PCI_DEVICE_ID_INTEL_82B43:
case PCI_DEVICE_ID_INTEL_82B43_2:
case PCI_DEVICE_ID_INTEL_ATOM_DXXX:
case PCI_DEVICE_ID_INTEL_ATOM_NXXX:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_E3:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_E3:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_015c:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_E3:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_U:
case PCI_DEVICE_ID_INTEL_CORE_5TH_GEN_U:
epbar_phys = pci_read_long(nb, 0x40) & 0xfffffffe;
epbar_phys |= ((uint64_t)pci_read_long(nb, 0x44)) << 32;
break;
case PCI_DEVICE_ID_INTEL_82810:
case PCI_DEVICE_ID_INTEL_82810_DC:
case PCI_DEVICE_ID_INTEL_82810E_DC:
case PCI_DEVICE_ID_INTEL_82830M:
case PCI_DEVICE_ID_INTEL_82865:
printf("This northbridge does not have EPBAR.\n");
return 1;
default:
printf("Error: Dumping EPBAR on this northbridge is not (yet) supported.\n");
return 1;
}
epbar = map_physical(epbar_phys, size);
if (epbar == NULL) {
perror("Error mapping EPBAR");
exit(1);
}
printf("EPBAR = 0x%08" PRIx64 " (MEM)\n\n", epbar_phys);
for (i = 0; i < size; i += 4) {
if (*(uint32_t *)(epbar + i))
printf("0x%04x: 0x%08x\n", i, *(uint32_t *)(epbar+i));
}
unmap_physical((void *)epbar, size);
return 0;
}
/*
* MCH-ICH Serial Interconnect Ingress Root Complex MMIO configuration space
*/
int print_dmibar(struct pci_dev *nb)
{
int i, size = (4 * 1024);
volatile uint8_t *dmibar;
uint64_t dmibar_phys;
const io_register_t *dmi_registers = NULL;
printf("\n============= DMIBAR ============\n\n");
switch (nb->device_id) {
case PCI_DEVICE_ID_INTEL_82915:
case PCI_DEVICE_ID_INTEL_82945GM:
case PCI_DEVICE_ID_INTEL_82945GSE:
case PCI_DEVICE_ID_INTEL_82945P:
case PCI_DEVICE_ID_INTEL_82975X:
dmibar_phys = pci_read_long(nb, 0x4c) & 0xfffffffe;
break;
case PCI_DEVICE_ID_INTEL_82946:
case PCI_DEVICE_ID_INTEL_82965PM:
case PCI_DEVICE_ID_INTEL_82Q965:
case PCI_DEVICE_ID_INTEL_82Q35:
case PCI_DEVICE_ID_INTEL_82G33:
case PCI_DEVICE_ID_INTEL_82Q33:
case PCI_DEVICE_ID_INTEL_82X38:
case PCI_DEVICE_ID_INTEL_32X0:
case PCI_DEVICE_ID_INTEL_82XX4X:
case PCI_DEVICE_ID_INTEL_82Q45:
case PCI_DEVICE_ID_INTEL_82G45:
case PCI_DEVICE_ID_INTEL_82G41:
case PCI_DEVICE_ID_INTEL_82B43:
case PCI_DEVICE_ID_INTEL_82B43_2:
case PCI_DEVICE_ID_INTEL_ATOM_DXXX:
case PCI_DEVICE_ID_INTEL_ATOM_NXXX:
dmibar_phys = pci_read_long(nb, 0x68) & 0xfffffffe;
dmibar_phys |= ((uint64_t)pci_read_long(nb, 0x6c)) << 32;
break;
case PCI_DEVICE_ID_INTEL_82810:
case PCI_DEVICE_ID_INTEL_82810_DC:
case PCI_DEVICE_ID_INTEL_82810E_DC:
case PCI_DEVICE_ID_INTEL_82865:
printf("This northbridge does not have DMIBAR.\n");
return 1;
case PCI_DEVICE_ID_INTEL_82X58:
dmibar_phys = pci_read_long(nb, 0x50) & 0xfffff000;
break;
case PCI_DEVICE_ID_INTEL_CORE_0TH_GEN:
/* DMIBAR is called DMIRCBAR in Nehalem */
dmibar_phys = pci_read_long(nb, 0x50) & 0xfffff000; /* 31:12 */
dmi_registers = nehalem_dmi_registers;
size = ARRAY_SIZE(nehalem_dmi_registers);
break;
case PCI_DEVICE_ID_INTEL_CORE_1ST_GEN:
dmibar_phys = pci_read_long(nb, 0x68);
dmibar_phys |= ((uint64_t)pci_read_long(nb, 0x6c)) << 32;
dmibar_phys &= 0x0000000ffffff000UL; /* 35:12 */
dmi_registers = westmere_dmi_registers;
size = ARRAY_SIZE(westmere_dmi_registers);
break;
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_E3:
dmi_registers = sandybridge_dmi_registers;
size = ARRAY_SIZE(sandybridge_dmi_registers);
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_D: /* pretty printing not implemented yet */
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_E3:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_015c:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_E3:
dmibar_phys = pci_read_long(nb, 0x68);
dmibar_phys |= ((uint64_t)pci_read_long(nb, 0x6c)) << 32;
dmibar_phys &= 0x0000007ffffff000UL; /* 38:12 */
break;
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_U:
case PCI_DEVICE_ID_INTEL_CORE_5TH_GEN_U:
dmi_registers = haswell_ult_dmi_registers;
size = ARRAY_SIZE(haswell_ult_dmi_registers);
dmibar_phys = pci_read_long(nb, 0x68);
dmibar_phys |= ((uint64_t)pci_read_long(nb, 0x6c)) << 32;
dmibar_phys &= 0x0000007ffffff000UL; /* 38:12 */
break;
default:
printf("Error: Dumping DMIBAR on this northbridge is not (yet) supported.\n");
return 1;
}
dmibar = map_physical(dmibar_phys, size);
if (dmibar == NULL) {
perror("Error mapping DMIBAR");
exit(1);
}
printf("DMIBAR = 0x%08" PRIx64 " (MEM)\n\n", dmibar_phys);
if (dmi_registers != NULL) {
for (i = 0; i < size; i++) {
switch (dmi_registers[i].size) {
case 4:
printf("dmibase+0x%04x: 0x%08x (%s)\n",
dmi_registers[i].addr,
*(uint32_t *)(dmibar+dmi_registers[i].addr),
dmi_registers[i].name);
break;
case 2:
printf("dmibase+0x%04x: 0x%04x (%s)\n",
dmi_registers[i].addr,
*(uint16_t *)(dmibar+dmi_registers[i].addr),
dmi_registers[i].name);
break;
case 1:
printf("dmibase+0x%04x: 0x%02x (%s)\n",
dmi_registers[i].addr,
*(uint8_t *)(dmibar+dmi_registers[i].addr),
dmi_registers[i].name);
break;
}
}
} else {
for (i = 0; i < size; i += 4) {
if (*(uint32_t *)(dmibar + i))
printf("0x%04x: 0x%08x\n", i, *(uint32_t *)(dmibar+i));
}
}
unmap_physical((void *)dmibar, size);
return 0;
}
/*
* PCIe MMIO configuration space
*/
int print_pciexbar(struct pci_dev *nb)
{
uint64_t pciexbar_reg;
uint64_t pciexbar_phys;
volatile uint8_t *pciexbar;
int max_busses, devbase, i;
int bus, dev, fn;
printf("========= PCIEXBAR ========\n\n");
switch (nb->device_id) {
case PCI_DEVICE_ID_INTEL_82915:
case PCI_DEVICE_ID_INTEL_82945GM:
case PCI_DEVICE_ID_INTEL_82945GSE:
case PCI_DEVICE_ID_INTEL_82945P:
case PCI_DEVICE_ID_INTEL_82975X:
pciexbar_reg = pci_read_long(nb, 0x48);
break;
case PCI_DEVICE_ID_INTEL_82946:
case PCI_DEVICE_ID_INTEL_82965PM:
case PCI_DEVICE_ID_INTEL_82Q965:
case PCI_DEVICE_ID_INTEL_82Q35:
case PCI_DEVICE_ID_INTEL_82G33:
case PCI_DEVICE_ID_INTEL_82Q33:
case PCI_DEVICE_ID_INTEL_82X38:
case PCI_DEVICE_ID_INTEL_32X0:
case PCI_DEVICE_ID_INTEL_82XX4X:
case PCI_DEVICE_ID_INTEL_82Q45:
case PCI_DEVICE_ID_INTEL_82G45:
case PCI_DEVICE_ID_INTEL_82G41:
case PCI_DEVICE_ID_INTEL_82B43:
case PCI_DEVICE_ID_INTEL_82B43_2:
case PCI_DEVICE_ID_INTEL_ATOM_DXXX:
case PCI_DEVICE_ID_INTEL_ATOM_NXXX:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_2ND_GEN_E3:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_E3:
case PCI_DEVICE_ID_INTEL_CORE_3RD_GEN_015c:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_D:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_M:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_E3:
case PCI_DEVICE_ID_INTEL_CORE_4TH_GEN_U:
case PCI_DEVICE_ID_INTEL_CORE_5TH_GEN_U:
pciexbar_reg = pci_read_long(nb, 0x60);
pciexbar_reg |= ((uint64_t)pci_read_long(nb, 0x64)) << 32;
break;
case PCI_DEVICE_ID_INTEL_82810:
case PCI_DEVICE_ID_INTEL_82810_DC:
case PCI_DEVICE_ID_INTEL_82810E_DC:
case PCI_DEVICE_ID_INTEL_82865:
printf("Error: This northbridge does not have PCIEXBAR.\n");
return 1;
default:
printf("Error: Dumping PCIEXBAR on this northbridge is not (yet) supported.\n");
return 1;
}
if (!(pciexbar_reg & (1 << 0))) {
printf("PCIEXBAR register is disabled.\n");
return 0;
}
switch ((pciexbar_reg >> 1) & 3) {
case 0: // 256MB
pciexbar_phys = pciexbar_reg & (0xffULL << 28);
max_busses = 256;
break;
case 1: // 128M
pciexbar_phys = pciexbar_reg & (0x1ffULL << 27);
max_busses = 128;
break;
case 2: // 64M
pciexbar_phys = pciexbar_reg & (0x3ffULL << 26);
max_busses = 64;
break;
default: // RSVD
printf("Undefined address base. Bailing out.\n");
return 1;
}
printf("PCIEXBAR: 0x%08" PRIx64 "\n", pciexbar_phys);
pciexbar = map_physical(pciexbar_phys, (max_busses * 1024 * 1024));
if (pciexbar == NULL) {
perror("Error mapping PCIEXBAR");
exit(1);
}
for (bus = 0; bus < max_busses; bus++) {
for (dev = 0; dev < 32; dev++) {
for (fn = 0; fn < 8; fn++) {
devbase = (bus * 1024 * 1024) + (dev * 32 * 1024) + (fn * 4 * 1024);
if (*(uint16_t *)(pciexbar + devbase) == 0xffff)
continue;
/* This is a heuristics. Anyone got a better check? */
if( (*(uint32_t *)(pciexbar + devbase + 256) == 0xffffffff) &&
(*(uint32_t *)(pciexbar + devbase + 512) == 0xffffffff) ) {
#if DEBUG
printf("Skipped non-PCIe device %02x:%02x.%01x\n", bus, dev, fn);
#endif
continue;
}
printf("\nPCIe %02x:%02x.%01x extended config space:", bus, dev, fn);
for (i = 0; i < 4096; i++) {
if((i % 0x10) == 0)
printf("\n%04x:", i);
printf(" %02x", *(pciexbar+devbase+i));
}
printf("\n");
}
}
}
unmap_physical((void *)pciexbar, (max_busses * 1024 * 1024));
return 0;
}
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