diff options
author | Gerd Hoffmann <kraxel@redhat.com> | 2015-01-21 16:35:04 +0100 |
---|---|---|
committer | Martin Mares <mj@ucw.cz> | 2015-01-22 10:08:09 +0100 |
commit | 7ff8a323e7addf64507c5101356e664456112b09 (patch) | |
tree | f8b28518c47ced4652ddd0ea4bcfb48dda534304 | |
parent | cd10d1d13afadef83290529958f56265bca83abf (diff) | |
download | pciutils-7ff8a323e7addf64507c5101356e664456112b09.tar.gz |
Add virtio vendor capability support
virtio uses vendor-specific capabilities to specify the location of
the virtio register ranges. The specification can be found here:
http://docs.oasis-open.org/virtio/virtio/v1.0/cs01/virtio-v1.0-cs01.html#x1-690004
This patch adds support for decoding these capabilities to lspci.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-rw-r--r-- | Makefile | 2 | ||||
-rw-r--r-- | ls-caps-vendor.c | 76 | ||||
-rw-r--r-- | ls-caps.c | 2 | ||||
-rw-r--r-- | lspci.h | 4 |
4 files changed, 82 insertions, 2 deletions
@@ -69,7 +69,7 @@ force: lib/config.h lib/config.mk: cd lib && ./configure -lspci: lspci.o ls-vpd.o ls-caps.o ls-ecaps.o ls-kernel.o ls-tree.o ls-map.o common.o lib/$(PCILIB) +lspci: lspci.o ls-vpd.o ls-caps.o ls-caps-vendor.o ls-ecaps.o ls-kernel.o ls-tree.o ls-map.o common.o lib/$(PCILIB) setpci: setpci.o common.o lib/$(PCILIB) LSPCIINC=lspci.h pciutils.h $(PCIINC) diff --git a/ls-caps-vendor.c b/ls-caps-vendor.c new file mode 100644 index 0000000..4cdfe22 --- /dev/null +++ b/ls-caps-vendor.c @@ -0,0 +1,76 @@ +/* + * The PCI Utilities -- Show Vendor-specific Capabilities + * + * Copyright (c) 2014 Gerd Hoffmann <kraxel@redhat.com> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#include <stdio.h> +#include <string.h> + +#include "lspci.h" + +static void +show_vendor_caps_virtio(struct device *d, int where, int cap) +{ + int length = BITS(cap, 0, 8); + int type = BITS(cap, 8, 8); + char *tname; + + if (length < 16) + return; + if (!config_fetch(d, where, length)) + return; + + switch (type) + { + case 1: + tname = "CommonCfg"; + break; + case 2: + tname = "Notify"; + break; + case 3: + tname = "ISR"; + break; + case 4: + tname = "DeviceCfg"; + break; + default: + tname = "<unknown>"; + break; + } + + printf("VirtIO: %s\n", tname); + + if (verbose < 2) + return; + + printf("\t\tBAR=%d offset=%08x size=%08x\n", + get_conf_byte(d, where + 4), + get_conf_long(d, where + 8), + get_conf_long(d, where + 12)); + + if (type != 2 || length < 20) + return; + + printf("\t\tmultiplier=%08x\n", + get_conf_long(d, where+16)); +} + +void +show_vendor_caps(struct device *d, int where, int cap) +{ + switch (get_conf_word(d, PCI_VENDOR_ID)) + { + case 0x1af4: /* Red Hat */ + if (get_conf_word(d, PCI_DEVICE_ID) >= 0x1000 && + get_conf_word(d, PCI_DEVICE_ID) <= 0x107f) + show_vendor_caps_virtio(d, where, cap); + break; + default: + printf("Vendor Specific Information: Len=%02x <?>\n", BITS(cap, 0, 8)); + break; + } +} @@ -1315,7 +1315,7 @@ show_caps(struct device *d, int where) cap_ht(d, where, cap); break; case PCI_CAP_ID_VNDR: - printf("Vendor Specific Information: Len=%02x <?>\n", BITS(cap, 0, 8)); + show_vendor_caps(d, where, cap); break; case PCI_CAP_ID_DBG: cap_debug_port(cap); @@ -70,6 +70,10 @@ void show_caps(struct device *d, int where); void show_ext_caps(struct device *d); +/* ls-caps-vendor.c */ + +void show_vendor_caps(struct device *d, int where, int cap); + /* ls-kernel.c */ void show_kernel_machine(struct device *d UNUSED); |