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[src/trunk]: src/sys/dev/pci - Print Data Select and Data Scale in pci_conf_p...
details: https://anonhg.NetBSD.org/src/rev/67082b42dc15
branches: trunk
changeset: 821727:67082b42dc15
user: msaitoh <msaitoh%NetBSD.org@localhost>
date: Wed Feb 15 06:53:55 2017 +0000
description:
- Print Data Select and Data Scale in pci_conf_print_pcipm_cap().
- The Message Data register of MSI cap is not 32bit but 16bit.
- When the PCIE_LCAP_MAX_SPEED bitfiled is 0, it means it supports 2.5GT/s only.
- Print link de-emphasis value by "-X dB".
- Print Completion Timeout Ranges Supported filed with alphabets.
- Print TPH Completer Supported fileld's meaning.
- Print PCIE_DCAP2_MAX_EETLP correctly. 0 means 4 End-End TLP Prefixes.
- If the Supported Link Speed Vector is 0, the Link Capability 2 register is not
implemented. Don't decode LCAP2 when the vector is 0.
- The ACS's Egress Control Vector is 32bit, so print with 0x%08x.
- Print SR-IOV's device ID.
- Use __SHIFTOUT() to avoid using magic number.
- Prefix "0x" for hexadecimal value.
diffstat:
sys/dev/pci/pci_subr.c | 162 +++++++++++++++++++++++++++++++++---------------
sys/dev/pci/pcireg.h | 3 +-
2 files changed, 113 insertions(+), 52 deletions(-)
diffs (truncated from 384 to 300 lines):
diff -r 2edd41edb85a -r 67082b42dc15 sys/dev/pci/pci_subr.c
--- a/sys/dev/pci/pci_subr.c Wed Feb 15 02:55:53 2017 +0000
+++ b/sys/dev/pci/pci_subr.c Wed Feb 15 06:53:55 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pci_subr.c,v 1.156 2016/12/28 06:57:27 msaitoh Exp $ */
+/* $NetBSD: pci_subr.c,v 1.157 2017/02/15 06:53:55 msaitoh Exp $ */
/*
* Copyright (c) 1997 Zubin D. Dittia. All rights reserved.
@@ -40,7 +40,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.156 2016/12/28 06:57:27 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.157 2017/02/15 06:53:55 msaitoh Exp $");
#ifdef _KERNEL_OPT
#include "opt_pci.h"
@@ -1082,12 +1082,16 @@
onoff("No soft reset", pmcsr, PCI_PMCSR_NO_SOFTRST);
printf(" PME# assertion: %sabled\n",
(pmcsr & PCI_PMCSR_PME_EN) ? "en" : "dis");
+ printf(" Data Select: %d\n",
+ __SHIFTOUT(pmcsr, PCI_PMCSR_DATASEL_MASK));
+ printf(" Data Scale: %d\n",
+ __SHIFTOUT(pmcsr, PCI_PMCSR_DATASCL_MASK));
onoff("PME# status", pmcsr, PCI_PMCSR_PME_STS);
printf(" Bridge Support Extensions register: 0x%02x\n",
(reg >> 16) & 0xff);
onoff("B2/B3 support", reg, PCI_PMCSR_B2B3_SUPPORT);
onoff("Bus Power/Clock Control Enable", reg, PCI_PMCSR_BPCC_EN);
- printf(" Data register: 0x%02x\n", (reg >> 24) & 0xff);
+ printf(" Data register: 0x%02x\n", __SHIFTOUT(reg, PCI_PMCSR_DATA));
}
@@ -1122,7 +1126,8 @@
printf(" Message Address %sregister: 0x%08x\n",
"(upper) ", *regs++);
}
- printf(" Message Data register: 0x%08x\n", *regs++);
+ printf(" Message Data register: 0x%04x\n", *regs & 0xffff);
+ regs++;
if (ctl & PCI_MSI_CTL_PERVEC_MASK) {
printf(" Vector Mask register: 0x%08x\n", *regs++);
printf(" Vector Pending register: 0x%08x\n", *regs++);
@@ -1478,17 +1483,16 @@
}
}
-static const char * const pcie_linkspeeds[] = {"2.5", "5.0", "8.0"};
+static const char * const pcie_linkspeeds[] = {"2.5", "2.5", "5.0", "8.0"};
static void
pci_print_pcie_linkspeed(pcireg_t val)
{
- /* Start from 1 */
- if (val < 1 || val > __arraycount(pcie_linkspeeds))
+ if (val > __arraycount(pcie_linkspeeds))
printf("unknown value (%u)\n", val);
else
- printf("%sGT/s\n", pcie_linkspeeds[val - 1]);
+ printf("%sGT/s\n", pcie_linkspeeds[val]);
}
static void
@@ -1500,13 +1504,28 @@
for (i = 0; i < 16; i++)
if (((val >> i) & 0x01) != 0) {
if (i >= __arraycount(pcie_linkspeeds))
- printf(" unknown vector (%x)", 1 << i);
+ printf(" unknown vector (0x%x)", 1 << i);
else
printf(" %sGT/s", pcie_linkspeeds[i]);
}
}
static void
+pci_print_pcie_link_deemphasis(pcireg_t val)
+{
+ switch (val) {
+ case 0:
+ printf("-6dB");
+ break;
+ case 1:
+ printf("-3.5dB");
+ break;
+ default:
+ printf("(reserved value)");
+ }
+}
+
+static void
pci_conf_print_pcie_cap(const pcireg_t *regs, int capoff)
{
pcireg_t reg; /* for each register */
@@ -1515,11 +1534,12 @@
bool check_slot = false;
bool check_rootport = false;
unsigned int pciever;
+ unsigned int i;
printf("\n PCI Express Capabilities Register\n");
/* Capability Register */
reg = regs[o2i(capoff)];
- printf(" Capability register: %04x\n", reg >> 16);
+ printf(" Capability register: 0x%04x\n", reg >> 16);
pciever = (unsigned int)((reg & 0x000f0000) >> 16);
printf(" Capability version: %u\n", pciever);
printf(" Device type: ");
@@ -1564,7 +1584,7 @@
break;
}
onoff("Slot implemented", reg, PCIE_XCAP_SI);
- printf(" Interrupt Message Number: %x\n",
+ printf(" Interrupt Message Number: 0x%02x\n",
(unsigned int)((reg & PCIE_XCAP_IRQ) >> 27));
/* Device Capability Register */
@@ -1740,7 +1760,7 @@
if (check_slot == true) {
/* Slot Capability Register */
reg = regs[o2i(capoff + PCIE_SLCAP)];
- printf(" Slot Capability Register: %08x\n", reg);
+ printf(" Slot Capability Register: 0x%08x\n", reg);
onoff("Attention Button Present", reg, PCIE_SLCAP_ABP);
onoff("Power Controller Present", reg, PCIE_SLCAP_PCP);
onoff("MRL Sensor Present", reg, PCIE_SLCAP_MSP);
@@ -1808,7 +1828,7 @@
PCIE_SLCSR_AUTOSPLDIS);
/* Slot Status Register */
- printf(" Slot Status Register: %04x\n", reg >> 16);
+ printf(" Slot Status Register: 0x%04x\n", reg >> 16);
onoff("Attention Button Pressed", reg, PCIE_SLCSR_ABP);
onoff("Power Fault Detected", reg, PCIE_SLCSR_PFD);
onoff("MRL Sensor Changed", reg, PCIE_SLCSR_MSC);
@@ -1834,14 +1854,14 @@
onoff("CRS Software Visibility Enable", reg, PCIE_RCR_CRS_SVE);
/* Root Capability Register */
- printf(" Root Capability Register: %04x\n",
+ printf(" Root Capability Register: 0x%04x\n",
reg >> 16);
onoff("CRS Software Visibility", reg, PCIE_RCR_CRS_SV);
/* Root Status Register */
reg = regs[o2i(capoff + PCIE_RSR)];
- printf(" Root Status Register: %08x\n", reg);
- printf(" PME Requester ID: %04x\n",
+ printf(" Root Status Register: 0x%08x\n", reg);
+ printf(" PME Requester ID: 0x%04x\n",
(unsigned int)(reg & PCIE_RSR_PME_REQESTER));
onoff("PME was asserted", reg, PCIE_RSR_PME_STAT);
onoff("another PME is pending", reg, PCIE_RSR_PME_PEND);
@@ -1854,8 +1874,19 @@
/* Device Capabilities 2 */
reg = regs[o2i(capoff + PCIE_DCAP2)];
printf(" Device Capabilities 2: 0x%08x\n", reg);
- printf(" Completion Timeout Ranges Supported: %u \n",
- (unsigned int)(reg & PCIE_DCAP2_COMPT_RANGE));
+ printf(" Completion Timeout Ranges Supported: ");
+ val = reg & PCIE_DCAP2_COMPT_RANGE;
+ switch (val) {
+ case 0:
+ printf("not supported\n");
+ break;
+ default:
+ for (i = 0; i <= 3; i++) {
+ if (((val >> i) & 0x01) != 0)
+ printf("%c", 'A' + i);
+ }
+ printf("\n");
+ }
onoff("Completion Timeout Disable Supported", reg,
PCIE_DCAP2_COMPT_DIS);
onoff("ARI Forwarding Supported", reg, PCIE_DCAP2_ARI_FWD);
@@ -1865,8 +1896,22 @@
onoff("128-bit CAS Completer Supported", reg, PCIE_DCAP2_128CAS);
onoff("No RO-enabled PR-PR passing", reg, PCIE_DCAP2_NO_ROPR_PASS);
onoff("LTR Mechanism Supported", reg, PCIE_DCAP2_LTR_MEC);
- printf(" TPH Completer Supported: %u\n",
- (unsigned int)(reg & PCIE_DCAP2_TPH_COMP) >> 12);
+ printf(" TPH Completer Supported: ");
+ switch (__SHIFTOUT(reg, PCIE_DCAP2_TPH_COMP)) {
+ case 0:
+ printf("Not supportted\n");
+ break;
+ case 1:
+ printf("TPH\n");
+ break;
+ case 3:
+ printf("TPH and Extended TPH\n");
+ break;
+ default:
+ printf("(reserved value)\n");
+ break;
+
+ }
printf(" LN System CLS: ");
switch (__SHIFTOUT(reg, PCIE_DCAP2_LNSYSCLS)) {
case 0x0:
@@ -1899,8 +1944,8 @@
}
onoff("Extended Fmt Field Supported", reg, PCIE_DCAP2_EXTFMT_FLD);
onoff("End-End TLP Prefix Supported", reg, PCIE_DCAP2_EETLP_PREF);
- printf(" Max End-End TLP Prefixes: %u\n",
- (unsigned int)(reg & PCIE_DCAP2_MAX_EETLP) >> 22);
+ val = __SHIFTOUT(reg, PCIE_DCAP2_MAX_EETLP);
+ printf(" Max End-End TLP Prefixes: %u\n", (val == 0) ? 4 : val);
printf(" Emergency Power Reduction Supported: ");
switch (__SHIFTOUT(reg, PCIE_DCAP2_EMGPWRRED)) {
case 0x0:
@@ -1952,26 +1997,31 @@
onoff("End-End TLP Prefix Blocking on", reg, PCIE_DCSR2_EETLP);
if (check_link) {
- bool drs_supported;
+ bool drs_supported = false;
/* Link Capability 2 */
reg = regs[o2i(capoff + PCIE_LCAP2)];
- printf(" Link Capabilities 2: 0x%08x\n", reg);
- printf(" Supported Link Speed Vector:");
- pci_print_pcie_linkspeedvector(
- __SHIFTOUT(reg, PCIE_LCAP2_SUP_LNKSV));
- printf("\n");
- onoff("Crosslink Supported", reg, PCIE_LCAP2_CROSSLNK);
- printf(" Lower SKP OS Generation Supported Speed Vector:");
- pci_print_pcie_linkspeedvector(
- __SHIFTOUT(reg, PCIE_LCAP2_LOWSKPOS_GENSUPPSV));
- printf("\n");
- printf(" Lower SKP OS Reception Supported Speed Vector:");
- pci_print_pcie_linkspeedvector(
- __SHIFTOUT(reg, PCIE_LCAP2_LOWSKPOS_RECSUPPSV));
- printf("\n");
- onoff("DRS Supported", reg, PCIE_LCAP2_DRS);
- drs_supported = (reg & PCIE_LCAP2_DRS) ? true : false;
+ /* If the vector is 0, LCAP2 is not implemented */
+ if ((reg & PCIE_LCAP2_SUP_LNKSV) != 0) {
+ printf(" Link Capabilities 2: 0x%08x\n", reg);
+ printf(" Supported Link Speeds Vector:");
+ pci_print_pcie_linkspeedvector(
+ __SHIFTOUT(reg, PCIE_LCAP2_SUP_LNKSV));
+ printf("\n");
+ onoff("Crosslink Supported", reg, PCIE_LCAP2_CROSSLNK);
+ printf(" "
+ "Lower SKP OS Generation Supported Speed Vector:");
+ pci_print_pcie_linkspeedvector(
+ __SHIFTOUT(reg, PCIE_LCAP2_LOWSKPOS_GENSUPPSV));
+ printf("\n");
+ printf(" "
+ "Lower SKP OS Reception Supported Speed Vector:");
+ pci_print_pcie_linkspeedvector(
+ __SHIFTOUT(reg, PCIE_LCAP2_LOWSKPOS_RECSUPPSV));
+ printf("\n");
+ onoff("DRS Supported", reg, PCIE_LCAP2_DRS);
+ drs_supported = (reg & PCIE_LCAP2_DRS) ? true : false;
+ }
/* Link Control 2 */
reg = regs[o2i(capoff + PCIE_LCSR2)];
@@ -1982,17 +2032,25 @@
onoff("Enter Compliance Enabled", reg, PCIE_LCSR2_ENT_COMPL);
onoff("HW Autonomous Speed Disabled", reg,
PCIE_LCSR2_HW_AS_DIS);
- onoff("Selectable De-emphasis", reg, PCIE_LCSR2_SEL_DEEMP);
+ printf(" Selectable De-emphasis: ");
+ pci_print_pcie_link_deemphasis(
+ __SHIFTOUT(reg, PCIE_LCSR2_SEL_DEEMP));
+ printf("\n");
printf(" Transmit Margin: %u\n",
(unsigned int)(reg & PCIE_LCSR2_TX_MARGIN) >> 7);
onoff("Enter Modified Compliance", reg, PCIE_LCSR2_EN_MCOMP);
onoff("Compliance SOS", reg, PCIE_LCSR2_COMP_SOS);
- printf(" Compliance Present/De-emphasis: %u\n",
- (unsigned int)(reg & PCIE_LCSR2_COMP_DEEMP) >> 12);
+ printf(" Compliance Present/De-emphasis: ");
+ pci_print_pcie_link_deemphasis(
+ __SHIFTOUT(reg, PCIE_LCSR2_COMP_DEEMP));
+ printf("\n");
/* Link Status 2 */
printf(" Link Status 2: 0x%04x\n", (reg >> 16) & 0xffff);
- onoff("Current De-emphasis Level", reg, PCIE_LCSR2_DEEMP_LVL);
+ printf(" Current De-emphasis Level: ");
+ pci_print_pcie_link_deemphasis(
+ __SHIFTOUT(reg, PCIE_LCSR2_DEEMP_LVL));
+ printf("\n");
onoff("Equalization Complete", reg, PCIE_LCSR2_EQ_COMPL);
onoff("Equalization Phase 1 Successful", reg,
PCIE_LCSR2_EQP1_SUC);
@@ -2050,12 +2108,12 @@
onoff("MSI-X Enable", reg, PCI_MSIX_CTL_ENABLE);
reg = regs[o2i(capoff + PCI_MSIX_TBLOFFSET)];
printf(" Table offset register: 0x%08x\n", reg);
- printf(" Table offset: %08x\n",
+ printf(" Table offset: 0x%08x\n",
(pcireg_t)(reg & PCI_MSIX_TBLOFFSET_MASK));
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