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freebsd-dev/usr.sbin/pciconf/cap.c
John Baldwin 770e4c5bc0 Only attempt to list extended capabilities for devices that have a 
PCI-express capabilities.  Non-PCI-express PCI devices may simply ignore
the upper bits in a config register address effectively aliasing the
device ID register to 0x100 rather than returning 0xFFFFFFFF.  Previously
the code relied on these reads returning 0xFFFFFFFF.

MFC after:	3 days
2010-09-16 16:03:12 +00:00

633 lines
16 KiB
C
Raw Blame History

/*-
* Copyright (c) 2007 Yahoo!, Inc.
* All rights reserved.
* Written by: John Baldwin <jhb@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/types.h>
#include <err.h>
#include <stdio.h>
#include <sys/agpio.h>
#include <sys/pciio.h>
#include <dev/agp/agpreg.h>
#include <dev/pci/pcireg.h>
#include "pciconf.h"
static void list_ecaps(int fd, struct pci_conf *p);
static void
cap_power(int fd, struct pci_conf *p, uint8_t ptr)
{
uint16_t cap, status;
cap = read_config(fd, &p->pc_sel, ptr + PCIR_POWER_CAP, 2);
status = read_config(fd, &p->pc_sel, ptr + PCIR_POWER_STATUS, 2);
printf("powerspec %d supports D0%s%s D3 current D%d",
cap & PCIM_PCAP_SPEC,
cap & PCIM_PCAP_D1SUPP ? " D1" : "",
cap & PCIM_PCAP_D2SUPP ? " D2" : "",
status & PCIM_PSTAT_DMASK);
}
static void
cap_agp(int fd, struct pci_conf *p, uint8_t ptr)
{
uint32_t status, command;
status = read_config(fd, &p->pc_sel, ptr + AGP_STATUS, 4);
command = read_config(fd, &p->pc_sel, ptr + AGP_CAPID, 4);
printf("AGP ");
if (AGP_MODE_GET_MODE_3(status)) {
printf("v3 ");
if (AGP_MODE_GET_RATE(status) & AGP_MODE_V3_RATE_8x)
printf("8x ");
if (AGP_MODE_GET_RATE(status) & AGP_MODE_V3_RATE_4x)
printf("4x ");
} else {
if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_4x)
printf("4x ");
if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_2x)
printf("2x ");
if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_1x)
printf("1x ");
}
if (AGP_MODE_GET_SBA(status))
printf("SBA ");
if (AGP_MODE_GET_AGP(command)) {
printf("enabled at ");
if (AGP_MODE_GET_MODE_3(command)) {
printf("v3 ");
switch (AGP_MODE_GET_RATE(command)) {
case AGP_MODE_V3_RATE_8x:
printf("8x ");
break;
case AGP_MODE_V3_RATE_4x:
printf("4x ");
break;
}
} else
switch (AGP_MODE_GET_RATE(command)) {
case AGP_MODE_V2_RATE_4x:
printf("4x ");
break;
case AGP_MODE_V2_RATE_2x:
printf("2x ");
break;
case AGP_MODE_V2_RATE_1x:
printf("1x ");
break;
}
if (AGP_MODE_GET_SBA(command))
printf("SBA ");
} else
printf("disabled");
}
static void
cap_vpd(int fd, struct pci_conf *p, uint8_t ptr)
{
printf("VPD");
}
static void
cap_msi(int fd, struct pci_conf *p, uint8_t ptr)
{
uint16_t ctrl;
int msgnum;
ctrl = read_config(fd, &p->pc_sel, ptr + PCIR_MSI_CTRL, 2);
msgnum = 1 << ((ctrl & PCIM_MSICTRL_MMC_MASK) >> 1);
printf("MSI supports %d message%s%s%s ", msgnum,
(msgnum == 1) ? "" : "s",
(ctrl & PCIM_MSICTRL_64BIT) ? ", 64 bit" : "",
(ctrl & PCIM_MSICTRL_VECTOR) ? ", vector masks" : "");
if (ctrl & PCIM_MSICTRL_MSI_ENABLE) {
msgnum = 1 << ((ctrl & PCIM_MSICTRL_MME_MASK) >> 4);
printf("enabled with %d message%s", msgnum,
(msgnum == 1) ? "" : "s");
}
}
static void
cap_pcix(int fd, struct pci_conf *p, uint8_t ptr)
{
uint32_t status;
int comma, max_splits, max_burst_read;
status = read_config(fd, &p->pc_sel, ptr + PCIXR_STATUS, 4);
printf("PCI-X ");
if (status & PCIXM_STATUS_64BIT)
printf("64-bit ");
if ((p->pc_hdr & PCIM_HDRTYPE) == 1)
printf("bridge ");
if ((p->pc_hdr & PCIM_HDRTYPE) != 1 || (status & (PCIXM_STATUS_133CAP |
PCIXM_STATUS_266CAP | PCIXM_STATUS_533CAP)) != 0)
printf("supports");
comma = 0;
if (status & PCIXM_STATUS_133CAP) {
printf("%s 133MHz", comma ? "," : "");
comma = 1;
}
if (status & PCIXM_STATUS_266CAP) {
printf("%s 266MHz", comma ? "," : "");
comma = 1;
}
if (status & PCIXM_STATUS_533CAP) {
printf("%s 533MHz", comma ? "," : "");
comma = 1;
}
if ((p->pc_hdr & PCIM_HDRTYPE) == 1)
return;
switch (status & PCIXM_STATUS_MAX_READ) {
case PCIXM_STATUS_MAX_READ_512:
max_burst_read = 512;
break;
case PCIXM_STATUS_MAX_READ_1024:
max_burst_read = 1024;
break;
case PCIXM_STATUS_MAX_READ_2048:
max_burst_read = 2048;
break;
case PCIXM_STATUS_MAX_READ_4096:
max_burst_read = 4096;
break;
}
switch (status & PCIXM_STATUS_MAX_SPLITS) {
case PCIXM_STATUS_MAX_SPLITS_1:
max_splits = 1;
break;
case PCIXM_STATUS_MAX_SPLITS_2:
max_splits = 2;
break;
case PCIXM_STATUS_MAX_SPLITS_3:
max_splits = 3;
break;
case PCIXM_STATUS_MAX_SPLITS_4:
max_splits = 4;
break;
case PCIXM_STATUS_MAX_SPLITS_8:
max_splits = 8;
break;
case PCIXM_STATUS_MAX_SPLITS_12:
max_splits = 12;
break;
case PCIXM_STATUS_MAX_SPLITS_16:
max_splits = 16;
break;
case PCIXM_STATUS_MAX_SPLITS_32:
max_splits = 32;
break;
}
printf("%s %d burst read, %d split transaction%s", comma ? "," : "",
max_burst_read, max_splits, max_splits == 1 ? "" : "s");
}
static void
cap_ht(int fd, struct pci_conf *p, uint8_t ptr)
{
uint32_t reg;
uint16_t command;
command = read_config(fd, &p->pc_sel, ptr + PCIR_HT_COMMAND, 2);
printf("HT ");
if ((command & 0xe000) == PCIM_HTCAP_SLAVE)
printf("slave");
else if ((command & 0xe000) == PCIM_HTCAP_HOST)
printf("host");
else
switch (command & PCIM_HTCMD_CAP_MASK) {
case PCIM_HTCAP_SWITCH:
printf("switch");
break;
case PCIM_HTCAP_INTERRUPT:
printf("interrupt");
break;
case PCIM_HTCAP_REVISION_ID:
printf("revision ID");
break;
case PCIM_HTCAP_UNITID_CLUMPING:
printf("unit ID clumping");
break;
case PCIM_HTCAP_EXT_CONFIG_SPACE:
printf("extended config space");
break;
case PCIM_HTCAP_ADDRESS_MAPPING:
printf("address mapping");
break;
case PCIM_HTCAP_MSI_MAPPING:
printf("MSI %saddress window %s at 0x",
command & PCIM_HTCMD_MSI_FIXED ? "fixed " : "",
command & PCIM_HTCMD_MSI_ENABLE ? "enabled" :
"disabled");
if (command & PCIM_HTCMD_MSI_FIXED)
printf("fee00000");
else {
reg = read_config(fd, &p->pc_sel,
ptr + PCIR_HTMSI_ADDRESS_HI, 4);
if (reg != 0)
printf("%08x", reg);
reg = read_config(fd, &p->pc_sel,
ptr + PCIR_HTMSI_ADDRESS_LO, 4);
printf("%08x", reg);
}
break;
case PCIM_HTCAP_DIRECT_ROUTE:
printf("direct route");
break;
case PCIM_HTCAP_VCSET:
printf("VC set");
break;
case PCIM_HTCAP_RETRY_MODE:
printf("retry mode");
break;
case PCIM_HTCAP_X86_ENCODING:
printf("X86 encoding");
break;
default:
printf("unknown %02x", command);
break;
}
}
static void
cap_vendor(int fd, struct pci_conf *p, uint8_t ptr)
{
uint8_t length;
length = read_config(fd, &p->pc_sel, ptr + PCIR_VENDOR_LENGTH, 1);
printf("vendor (length %d)", length);
if (p->pc_vendor == 0x8086) {
/* Intel */
uint8_t version;
version = read_config(fd, &p->pc_sel, ptr + PCIR_VENDOR_DATA,
1);
printf(" Intel cap %d version %d", version >> 4, version & 0xf);
if (version >> 4 == 1 && length == 12) {
/* Feature Detection */
uint32_t fvec;
int comma;
comma = 0;
fvec = read_config(fd, &p->pc_sel, ptr +
PCIR_VENDOR_DATA + 5, 4);
printf("\n\t\t features:");
if (fvec & (1 << 0)) {
printf(" AMT");
comma = 1;
}
fvec = read_config(fd, &p->pc_sel, ptr +
PCIR_VENDOR_DATA + 1, 4);
if (fvec & (1 << 21)) {
printf("%s Quick Resume", comma ? "," : "");
comma = 1;
}
if (fvec & (1 << 18)) {
printf("%s SATA RAID-5", comma ? "," : "");
comma = 1;
}
if (fvec & (1 << 9)) {
printf("%s Mobile", comma ? "," : "");
comma = 1;
}
if (fvec & (1 << 7)) {
printf("%s 6 PCI-e x1 slots", comma ? "," : "");
comma = 1;
} else {
printf("%s 4 PCI-e x1 slots", comma ? "," : "");
comma = 1;
}
if (fvec & (1 << 5)) {
printf("%s SATA RAID-0/1/10", comma ? "," : "");
comma = 1;
}
if (fvec & (1 << 3)) {
printf("%s SATA AHCI", comma ? "," : "");
comma = 1;
}
}
}
}
static void
cap_debug(int fd, struct pci_conf *p, uint8_t ptr)
{
uint16_t debug_port;
debug_port = read_config(fd, &p->pc_sel, ptr + PCIR_DEBUG_PORT, 2);
printf("EHCI Debug Port at offset 0x%x in map 0x%x", debug_port &
PCIM_DEBUG_PORT_OFFSET, PCIR_BAR(debug_port >> 13));
}
static void
cap_subvendor(int fd, struct pci_conf *p, uint8_t ptr)
{
uint32_t id;
id = read_config(fd, &p->pc_sel, ptr + PCIR_SUBVENDCAP_ID, 4);
printf("PCI Bridge card=0x%08x", id);
}
#define MAX_PAYLOAD(field) (128 << (field))
static void
cap_express(int fd, struct pci_conf *p, uint8_t ptr)
{
uint32_t val;
uint16_t flags;
flags = read_config(fd, &p->pc_sel, ptr + PCIR_EXPRESS_FLAGS, 2);
printf("PCI-Express %d ", flags & PCIM_EXP_FLAGS_VERSION);
switch (flags & PCIM_EXP_FLAGS_TYPE) {
case PCIM_EXP_TYPE_ENDPOINT:
printf("endpoint");
break;
case PCIM_EXP_TYPE_LEGACY_ENDPOINT:
printf("legacy endpoint");
break;
case PCIM_EXP_TYPE_ROOT_PORT:
printf("root port");
break;
case PCIM_EXP_TYPE_UPSTREAM_PORT:
printf("upstream port");
break;
case PCIM_EXP_TYPE_DOWNSTREAM_PORT:
printf("downstream port");
break;
case PCIM_EXP_TYPE_PCI_BRIDGE:
printf("PCI bridge");
break;
case PCIM_EXP_TYPE_PCIE_BRIDGE:
printf("PCI to PCIe bridge");
break;
case PCIM_EXP_TYPE_ROOT_INT_EP:
printf("root endpoint");
break;
case PCIM_EXP_TYPE_ROOT_EC:
printf("event collector");
break;
default:
printf("type %d", (flags & PCIM_EXP_FLAGS_TYPE) >> 4);
break;
}
if (flags & PCIM_EXP_FLAGS_IRQ)
printf(" IRQ %d", (flags & PCIM_EXP_FLAGS_IRQ) >> 8);
val = read_config(fd, &p->pc_sel, ptr + PCIR_EXPRESS_DEVICE_CAP, 4);
flags = read_config(fd, &p->pc_sel, ptr + PCIR_EXPRESS_DEVICE_CTL, 2);
printf(" max data %d(%d)",
MAX_PAYLOAD((flags & PCIM_EXP_CTL_MAX_PAYLOAD) >> 5),
MAX_PAYLOAD(val & PCIM_EXP_CAP_MAX_PAYLOAD));
val = read_config(fd, &p->pc_sel, ptr + PCIR_EXPRESS_LINK_CAP, 4);
flags = read_config(fd, &p->pc_sel, ptr+ PCIR_EXPRESS_LINK_STA, 2);
printf(" link x%d(x%d)", (flags & PCIM_LINK_STA_WIDTH) >> 4,
(val & PCIM_LINK_CAP_MAX_WIDTH) >> 4);
}
static void
cap_msix(int fd, struct pci_conf *p, uint8_t ptr)
{
uint32_t val;
uint16_t ctrl;
int msgnum, table_bar, pba_bar;
ctrl = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_CTRL, 2);
msgnum = (ctrl & PCIM_MSIXCTRL_TABLE_SIZE) + 1;
val = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_TABLE, 4);
table_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
val = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_PBA, 4);
pba_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
printf("MSI-X supports %d message%s ", msgnum,
(msgnum == 1) ? "" : "s");
if (table_bar == pba_bar)
printf("in map 0x%x", table_bar);
else
printf("in maps 0x%x and 0x%x", table_bar, pba_bar);
if (ctrl & PCIM_MSIXCTRL_MSIX_ENABLE)
printf(" enabled");
}
static void
cap_sata(int fd, struct pci_conf *p, uint8_t ptr)
{
printf("SATA Index-Data Pair");
}
static void
cap_pciaf(int fd, struct pci_conf *p, uint8_t ptr)
{
uint8_t cap;
cap = read_config(fd, &p->pc_sel, ptr + PCIR_PCIAF_CAP, 1);
printf("PCI Advanced Features:%s%s",
cap & PCIM_PCIAFCAP_FLR ? " FLR" : "",
cap & PCIM_PCIAFCAP_TP ? " TP" : "");
}
void
list_caps(int fd, struct pci_conf *p)
{
int express;
uint16_t sta;
uint8_t ptr, cap;
/* Are capabilities present for this device? */
sta = read_config(fd, &p->pc_sel, PCIR_STATUS, 2);
if (!(sta & PCIM_STATUS_CAPPRESENT))
return;
switch (p->pc_hdr & PCIM_HDRTYPE) {
case PCIM_HDRTYPE_NORMAL:
case PCIM_HDRTYPE_BRIDGE:
ptr = PCIR_CAP_PTR;
break;
case PCIM_HDRTYPE_CARDBUS:
ptr = PCIR_CAP_PTR_2;
break;
default:
errx(1, "list_caps: bad header type");
}
/* Walk the capability list. */
express = 0;
ptr = read_config(fd, &p->pc_sel, ptr, 1);
while (ptr != 0 && ptr != 0xff) {
cap = read_config(fd, &p->pc_sel, ptr + PCICAP_ID, 1);
printf(" cap %02x[%02x] = ", cap, ptr);
switch (cap) {
case PCIY_PMG:
cap_power(fd, p, ptr);
break;
case PCIY_AGP:
cap_agp(fd, p, ptr);
break;
case PCIY_VPD:
cap_vpd(fd, p, ptr);
break;
case PCIY_MSI:
cap_msi(fd, p, ptr);
break;
case PCIY_PCIX:
cap_pcix(fd, p, ptr);
break;
case PCIY_HT:
cap_ht(fd, p, ptr);
break;
case PCIY_VENDOR:
cap_vendor(fd, p, ptr);
break;
case PCIY_DEBUG:
cap_debug(fd, p, ptr);
break;
case PCIY_SUBVENDOR:
cap_subvendor(fd, p, ptr);
break;
case PCIY_EXPRESS:
express = 1;
cap_express(fd, p, ptr);
break;
case PCIY_MSIX:
cap_msix(fd, p, ptr);
break;
case PCIY_SATA:
cap_sata(fd, p, ptr);
break;
case PCIY_PCIAF:
cap_pciaf(fd, p, ptr);
break;
default:
printf("unknown");
break;
}
printf("\n");
ptr = read_config(fd, &p->pc_sel, ptr + PCICAP_NEXTPTR, 1);
}
if (express)
list_ecaps(fd, p);
}
/* From <sys/systm.h>. */
static __inline uint32_t
bitcount32(uint32_t x)
{
x = (x & 0x55555555) + ((x & 0xaaaaaaaa) >> 1);
x = (x & 0x33333333) + ((x & 0xcccccccc) >> 2);
x = (x + (x >> 4)) & 0x0f0f0f0f;
x = (x + (x >> 8));
x = (x + (x >> 16)) & 0x000000ff;
return (x);
}
static void
ecap_aer(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
{
uint32_t sta, mask;
printf("AER %d", ver);
if (ver != 1)
return;
sta = read_config(fd, &p->pc_sel, ptr + PCIR_AER_UC_STATUS, 4);
mask = read_config(fd, &p->pc_sel, ptr + PCIR_AER_UC_SEVERITY, 4);
printf(" %d fatal", bitcount32(sta & mask));
printf(" %d non-fatal", bitcount32(sta & ~mask));
sta = read_config(fd, &p->pc_sel, ptr + PCIR_AER_COR_STATUS, 4);
printf(" %d corrected", bitcount32(sta));
}
static void
ecap_vc(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
{
uint32_t cap1;
printf("VC %d", ver);
if (ver != 1)
return;
cap1 = read_config(fd, &p->pc_sel, ptr + PCIR_VC_CAP1, 4);
printf(" max VC%d", cap1 & PCIM_VC_CAP1_EXT_COUNT);
if ((cap1 & PCIM_VC_CAP1_LOWPRI_EXT_COUNT) != 0)
printf(" lowpri VC0-VC%d",
(cap1 & PCIM_VC_CAP1_LOWPRI_EXT_COUNT) >> 4);
}
static void
ecap_sernum(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
{
uint32_t high, low;
printf("Serial %d", ver);
if (ver != 1)
return;
low = read_config(fd, &p->pc_sel, ptr + PCIR_SERIAL_LOW, 4);
high = read_config(fd, &p->pc_sel, ptr + PCIR_SERIAL_HIGH, 4);
printf(" %08x%08x", high, low);
}
static void
list_ecaps(int fd, struct pci_conf *p)
{
uint32_t ecap;
uint16_t ptr;
ptr = PCIR_EXTCAP;
ecap = read_config(fd, &p->pc_sel, ptr, 4);
if (ecap == 0xffffffff || ecap == 0)
return;
for (;;) {
printf("ecap %04x[%03x] = ", PCI_EXTCAP_ID(ecap), ptr);
switch (PCI_EXTCAP_ID(ecap)) {
case PCIZ_AER:
ecap_aer(fd, p, ptr, PCI_EXTCAP_VER(ecap));
break;
case PCIZ_VC:
ecap_vc(fd, p, ptr, PCI_EXTCAP_VER(ecap));
break;
case PCIZ_SERNUM:
ecap_sernum(fd, p, ptr, PCI_EXTCAP_VER(ecap));
break;
default:
printf("unknown %d", PCI_EXTCAP_VER(ecap));
break;
}
printf("\n");
ptr = PCI_EXTCAP_NEXTPTR(ecap);
if (ptr == 0)
break;
ecap = read_config(fd, &p->pc_sel, ptr, 4);
}
}
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