Module Name: src
Committed By: matt
Date: Sat Dec 11 18:22:24 UTC 2010
Modified Files:
src/sys/dev/pci: pci_subr.c
Log Message:
Add code to display MSI capabilities.
To generate a diff of this commit:
cvs rdiff -u -r1.85 -r1.86 src/sys/dev/pci/pci_subr.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/pci/pci_subr.c
diff -u src/sys/dev/pci/pci_subr.c:1.85 src/sys/dev/pci/pci_subr.c:1.86
--- src/sys/dev/pci/pci_subr.c:1.85 Sat Aug 21 13:18:35 2010
+++ src/sys/dev/pci/pci_subr.c Sat Dec 11 18:22:24 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: pci_subr.c,v 1.85 2010/08/21 13:18:35 pgoyette Exp $ */
+/* $NetBSD: pci_subr.c,v 1.86 2010/12/11 18:22:24 matt 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 1.85 2010/08/21 13:18:35 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_subr.c,v 1.86 2010/12/11 18:22:24 matt Exp $");
#ifdef _KERNEL_OPT
#include "opt_pci.h"
@@ -433,8 +433,9 @@
#define i2o(i) ((i) * 4)
#define o2i(o) ((o) / 4)
-#define onoff(str, bit) \
- printf(" %s: %s\n", (str), (rval & (bit)) ? "on" : "off");
+#define onoff2(str, bit, onstr, offstr) \
+ printf(" %s: %s\n", (str), (rval & (bit)) ? onstr : offstr);
+#define onoff(str, bit) onoff2(str, bit, "on", "off")
static void
pci_conf_print_common(
@@ -477,6 +478,7 @@
onoff("Interrupt disable", PCI_COMMAND_INTERRUPT_DISABLE);
printf(" Status register: 0x%04x\n", (rval >> 16) & 0xffff);
+ onoff2("Interrupt status", PCI_STATUS_INT_STATUS, "active", "inactive");
onoff("Capability List support", PCI_STATUS_CAPLIST_SUPPORT);
onoff("66 MHz capable", PCI_STATUS_66MHZ_SUPPORT);
onoff("User Definable Features (UDF) support", PCI_STATUS_UDF_SUPPORT);
@@ -819,6 +821,29 @@
printf(" Slot implemented\n");
printf(" Interrupt Message Number: %x\n",
(unsigned int)((regs[o2i(capoff)] & 0x4e000000) >> 27));
+ printf(" Link Capabilities Register: 0x%08x\n",
+ regs[o2i(capoff + 0x0c)]);
+ printf(" Maximum Link Speed: ");
+ if ((regs[o2i(capoff + 0x0c)] & 0x000f) != 1) {
+ printf("unknown %u value\n",
+ (regs[o2i(capoff + 0x0c)] & 0x000f));
+ } else {
+ printf("2.5Gb/s\n");
+ }
+ printf(" Maximum Link Width: x%u lanes\n",
+ (regs[o2i(capoff + 0x0c)] & 0x03f0) >> 4);
+ printf(" Port Number: %u\n", regs[o2i(capoff + 0x0c)] >> 24);
+ printf(" Link Status Register: 0x%04x\n",
+ regs[o2i(capoff + 0x10)] >> 16);
+ printf(" Negotiated Link Speed: ");
+ if (((regs[o2i(capoff + 0x10)] >> 16) & 0x000f) != 1) {
+ printf("unknown %u value\n",
+ (regs[o2i(capoff + 0x10)] >> 16) & 0x000f);
+ } else {
+ printf("2.5Gb/s\n");
+ }
+ printf(" Negotiated Link Width: x%u lanes\n",
+ (regs[o2i(capoff + 0x10)] >> 20) & 0x003f);
if ((regs[o2i(capoff + 0x18)] & 0x07ff) != 0) {
printf(" Slot Control Register:\n");
if ((regs[o2i(capoff + 0x18)] & 0x0001) != 0)
@@ -934,6 +959,41 @@
}
static void
+pci_conf_print_msi_cap(const pcireg_t *regs, int capoff)
+{
+ uint32_t ctl, mmc, mme;
+
+ regs += o2i(capoff);
+ ctl = *regs++;
+ mmc = (ctl >> PCI_MSI_CTL_MMC_SHIFT) & PCI_MSI_CTL_MMC_MASK;
+ mme = (ctl >> PCI_MSI_CTL_MME_SHIFT) & PCI_MSI_CTL_MME_MASK;
+
+ printf("\n PCI Message Signaled Interrupt\n");
+
+ printf(" Message Control register: 0x%04x\n", ctl >> 16);
+ printf(" MSI Enabled: %s\n",
+ ctl & PCI_MSI_CTL_MSI_ENABLE ? "yes" : "no");
+ printf(" Multiple Message Capable: %s (%d vector%s)\n",
+ mmc > 0 ? "yes" : "no", 1 << mmc, mmc > 0 ? "s" : "");
+ printf(" Multiple Message Enabled: %s (%d vector%s)\n",
+ mme > 0 ? "on" : "off", 1 << mme, mme > 0 ? "s" : "");
+ printf(" 64 Bit Address Capable: %s\n",
+ ctl & PCI_MSI_CTL_64BIT_ADDR ? "yes" : "no");
+ printf(" Per-Vector Masking Capable: %s\n",
+ ctl & PCI_MSI_CTL_PERVEC_MASK ? "yes" : "no");
+ printf(" Message Address %sregister: 0x%08x\n",
+ ctl & PCI_MSI_CTL_64BIT_ADDR ? "(lower) " : "", *regs++);
+ if (ctl & PCI_MSI_CTL_64BIT_ADDR) {
+ printf(" Message Address %sregister: 0x%08x\n",
+ "(upper) ", *regs++);
+ }
+ printf(" Message Data register: 0x%08x\n", *regs++);
+ if (ctl & PCI_MSI_CTL_PERVEC_MASK) {
+ printf(" Vector Mask register: 0x%08x\n", *regs++);
+ printf(" Vector Pending register: 0x%08x\n", *regs++);
+ }
+}
+static void
pci_conf_print_caplist(
#ifdef _KERNEL
pci_chipset_tag_t pc, pcitag_t tag,
@@ -942,7 +1002,7 @@
{
int off;
pcireg_t rval;
- int pcie_off = -1, pcipm_off = -1;
+ int pcie_off = -1, pcipm_off = -1, msi_off = -1;
for (off = PCI_CAPLIST_PTR(regs[o2i(capoff)]);
off != 0;
@@ -973,6 +1033,7 @@
break;
case PCI_CAP_MSI:
printf("MSI");
+ msi_off = off;
break;
case PCI_CAP_CPCI_HOTSWAP:
printf("CompactPCI Hot-swapping");
@@ -1013,6 +1074,8 @@
}
printf(")\n");
}
+ if (msi_off != -1)
+ pci_conf_print_msi_cap(regs, msi_off);
if (pcipm_off != -1)
pci_conf_print_pcipm_cap(regs, pcipm_off);
if (pcie_off != -1)
