static size_t
drm_intel_probe_agp_aperture_size(int fd)
{
struct pci_device *pci_dev;
size_t size = 0;
int ret;
ret = pci_system_init();
if (ret)
goto err;
/* XXX handle multiple adaptors? */
pci_dev = pci_device_find_by_slot(0, 0, 2, 0);
if (pci_dev == NULL)
goto err;
ret = pci_device_probe(pci_dev);
if (ret)
goto err;
size = pci_dev->regions[2].size;
err:
pci_system_cleanup ();
return size;
}
int
main(int argc, char *argv[])
{
char *op = "devlist";
struct pci_op *p = NULL;
argc = xo_parse_args(argc, argv);
if (argc < 0)
exit(EXIT_FAILURE);
if (argc > 1) {
op = argv[1];
}
if (pci_system_init()) {
err(1, "Couldn't initialize PCI system");
}
p = ops;
while (p->name != NULL) {
if (strcmp(op, p->name) == 0) {
p->fcn(argc - 1, &argv[1]);
break;
}
p++;
}
if (p->name == NULL)
usage();
xo_finish();
pci_system_cleanup();
return EXIT_SUCCESS;
}
unsigned int init_pci(unsigned char bus, const unsigned char forcemem) {
int ret = pci_system_init();
if (ret)
die(_("Failed to init pciaccess"));
struct pci_id_match match;
match.vendor_id = 0x1002;
match.device_id = PCI_MATCH_ANY;
match.subvendor_id = PCI_MATCH_ANY;
match.subdevice_id = PCI_MATCH_ANY;
match.device_class = 0;
match.device_class_mask = 0;
match.match_data = 0;
struct pci_device_iterator *iter = pci_id_match_iterator_create(&match);
struct pci_device *dev = NULL;
char busid[32];
while ((dev = pci_device_next(iter))) {
pci_device_probe(dev);
if ((dev->device_class & 0x00ffff00) != 0x00030000 &&
(dev->device_class & 0x00ffff00) != 0x00038000)
continue;
snprintf(busid, sizeof(busid), "pci:%04x:%02x:%02x.%u",
dev->domain, dev->bus, dev->dev, dev->func);
if (!bus || bus == dev->bus)
break;
}
pci_iterator_destroy(iter);
if (!dev)
die(_("Can't find Radeon cards"));
const unsigned int device_id = dev->device_id;
int reg = 2;
if (getfamily(device_id) >= BONAIRE)
reg = 5;
if (!dev->regions[reg].size) die(_("Can't get the register area size"));
// printf("Found area %p, size %lu\n", area, dev->regions[reg].size);
// DRM support for VRAM
drm_fd = drmOpen(NULL, busid);
if (drm_fd >= 0) {
drmVersionPtr ver = drmGetVersion(drm_fd);
if (strcmp(ver->name, "radeon") != 0 && strcmp(ver->name, "amdgpu") != 0) {
close(drm_fd);
drm_fd = -1;
}
strcpy(drm_name, ver->name);
drmFreeVersion(ver);
}
if (drm_fd < 0 && access("/dev/ati/card0", F_OK) == 0) // fglrx path
drm_fd = open("/dev/ati/card0", O_RDWR);
use_ioctl = 0;
if (drm_fd >= 0) {
authenticate_drm(drm_fd);
uint32_t rreg = 0x8010;
use_ioctl = get_drm_value(drm_fd, RADEON_INFO_READ_REG, &rreg);
}
if (forcemem) {
printf(_("Forcing the /dev/mem path.\n"));
use_ioctl = 0;
}
if (!use_ioctl) {
int mem = open("/dev/mem", O_RDONLY);
if (mem < 0) die(_("Cannot access GPU registers, are you root?"));
area = mmap(NULL, MMAP_SIZE, PROT_READ, MAP_PRIVATE, mem,
dev->regions[reg].base_addr + 0x8000);
if (area == MAP_FAILED) die(_("mmap failed"));
}
bits.vram = 0;
if (drm_fd < 0) {
printf(_("Failed to open DRM node, no VRAM support.\n"));
} else {
drmDropMaster(drm_fd);
drmVersionPtr ver = drmGetVersion(drm_fd);
/* printf("Version %u.%u.%u, name %s\n",
ver->version_major,
ver->version_minor,
ver->version_patchlevel,
ver->name);*/
if (ver->version_major < 2 ||
(ver->version_major == 2 && ver->version_minor < 36)) {
printf(_("Kernel too old for VRAM reporting.\n"));
drmFreeVersion(ver);
goto out;
}
drmFreeVersion(ver);
// No version indicator, so we need to test once
// We use different codepaths for radeon and amdgpu
// We store vram_size and check below if the ret value is sane
if (strcmp(drm_name, "radeon") == 0) {
struct drm_radeon_gem_info gem;
ret = drmCommandWriteRead(drm_fd, DRM_RADEON_GEM_INFO,
&gem, sizeof(gem));
vramsize = gem.vram_size;
} else if (strcmp(drm_name, "amdgpu") == 0) {
#ifdef ENABLE_AMDGPU
struct drm_amdgpu_info_vram_gtt vram_gtt = {};
struct drm_amdgpu_info request;
memset(&request, 0, sizeof(request));
request.return_pointer = (unsigned long) &vram_gtt;
request.return_size = sizeof(vram_gtt);
request.query = AMDGPU_INFO_VRAM_GTT;
ret = drmCommandWrite(drm_fd, DRM_AMDGPU_INFO,
&request, sizeof(request));
vramsize = vram_gtt.vram_size;
#else
printf(_("amdgpu DRM driver is used, but amdgpu VRAM size reporting is not enabled\n"));
#endif
}
if (ret) {
printf(_("Failed to get VRAM size, error %d\n"),
ret);
goto out;
}
ret = getvram();
if (ret == 0) {
if (strcmp(drm_name, "amdgpu") == 0) {
#ifndef ENABLE_AMDGPU
printf(_("amdgpu DRM driver is used, but amdgpu VRAM usage reporting is not enabled\n"));
#endif
}
printf(_("Failed to get VRAM usage, kernel likely too old\n"));
goto out;
}
bits.vram = 1;
}
out:
pci_system_cleanup();
return device_id;
}
static int
hwloc_look_pci(struct hwloc_backend *backend)
{
struct hwloc_topology *topology = backend->topology;
struct hwloc_obj *first_obj = NULL, *last_obj = NULL;
int ret;
struct pci_device_iterator *iter;
struct pci_device *pcidev;
#ifdef HWLOC_LINUX_SYS
DIR *dir;
#endif
if (!(hwloc_topology_get_flags(topology) & (HWLOC_TOPOLOGY_FLAG_IO_DEVICES|HWLOC_TOPOLOGY_FLAG_WHOLE_IO)))
return 0;
if (hwloc_get_next_pcidev(topology, NULL)) {
hwloc_debug("%s", "PCI objects already added, ignoring pci backend.\n");
return 0;
}
if (!hwloc_topology_is_thissystem(topology)) {
hwloc_debug("%s", "\nno PCI detection (not thissystem)\n");
return 0;
}
hwloc_debug("%s", "\nScanning PCI buses...\n");
/* initialize PCI scanning */
ret = pci_system_init();
if (ret) {
hwloc_debug("%s", "Can not initialize libpciaccess\n");
return -1;
}
iter = pci_slot_match_iterator_create(NULL);
/* iterate over devices */
for (pcidev = pci_device_next(iter);
pcidev;
pcidev = pci_device_next(iter))
{
const char *vendorname, *devicename, *fullname;
unsigned char config_space_cache[CONFIG_SPACE_CACHESIZE];
struct hwloc_obj *obj;
unsigned os_index;
unsigned domain;
unsigned device_class;
unsigned short tmp16;
char name[128];
unsigned offset;
/* initialize the config space in case we fail to read it (missing permissions, etc). */
memset(config_space_cache, 0xff, CONFIG_SPACE_CACHESIZE);
pci_device_probe(pcidev);
pci_device_cfg_read(pcidev, config_space_cache, 0, CONFIG_SPACE_CACHESIZE, NULL);
/* try to read the domain */
domain = pcidev->domain;
/* try to read the device_class */
device_class = pcidev->device_class >> 8;
/* fixup SR-IOV buggy VF device/vendor IDs */
if (0xffff == pcidev->vendor_id && 0xffff == pcidev->device_id) {
/* SR-IOV puts ffff:ffff in Virtual Function config space.
* The actual VF device ID is stored at a special (dynamic) location in the Physical Function config space.
* VF and PF have the same vendor ID.
*
* libpciaccess just returns ffff:ffff, needs to be fixed.
* linuxpci is OK because sysfs files are already fixed the kernel.
* (pciutils is OK when it uses those Linux sysfs files.)
*
* Reading these files is an easy way to work around the libpciaccess issue on Linux,
* but we have no way to know if this is caused by SR-IOV or not.
*
* TODO:
* If PF has CAP_ID_PCIX or CAP_ID_EXP (offset>0),
* look for extended capability PCI_EXT_CAP_ID_SRIOV (need extended config space (more than 256 bytes)),
* then read the VF device ID after it (PCI_IOV_DID bytes later).
* Needs access to extended config space (needs root on Linux).
* TODO:
* Add string info attributes in VF and PF objects?
*/
#ifdef HWLOC_LINUX_SYS
/* Workaround for Linux (the kernel returns the VF device/vendor IDs). */
char path[64];
char value[16];
FILE *file;
size_t read;
snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/vendor",
domain, pcidev->bus, pcidev->dev, pcidev->func);
file = fopen(path, "r");
if (file) {
read = fread(value, 1, sizeof(value), file);
fclose(file);
if (read)
/* fixup the pciaccess struct so that pci_device_get_vendor_name() is correct later. */
pcidev->vendor_id = strtoul(value, NULL, 16);
}
snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/device",
domain, pcidev->bus, pcidev->dev, pcidev->func);
file = fopen(path, "r");
if (file) {
read = fread(value, 1, sizeof(value), file);
fclose(file);
if (read)
/* fixup the pciaccess struct so that pci_device_get_device_name() is correct later. */
pcidev->device_id = strtoul(value, NULL, 16);
}
#endif
}
/* might be useful for debugging (note that domain might be truncated) */
os_index = (domain << 20) + (pcidev->bus << 12) + (pcidev->dev << 4) + pcidev->func;
obj = hwloc_alloc_setup_object(HWLOC_OBJ_PCI_DEVICE, os_index);
obj->attr->pcidev.domain = domain;
obj->attr->pcidev.bus = pcidev->bus;
obj->attr->pcidev.dev = pcidev->dev;
obj->attr->pcidev.func = pcidev->func;
obj->attr->pcidev.vendor_id = pcidev->vendor_id;
obj->attr->pcidev.device_id = pcidev->device_id;
obj->attr->pcidev.class_id = device_class;
obj->attr->pcidev.revision = config_space_cache[PCI_REVISION_ID];
obj->attr->pcidev.linkspeed = 0; /* unknown */
offset = hwloc_pci_find_cap(config_space_cache, PCI_CAP_ID_EXP);
if (offset > 0 && offset + 20 /* size of PCI express block up to link status */ <= CONFIG_SPACE_CACHESIZE)
hwloc_pci_find_linkspeed(config_space_cache, offset, &obj->attr->pcidev.linkspeed);
hwloc_pci_prepare_bridge(obj, config_space_cache);
if (obj->type == HWLOC_OBJ_PCI_DEVICE) {
memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_VENDOR_ID], sizeof(tmp16));
obj->attr->pcidev.subvendor_id = tmp16;
memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_ID], sizeof(tmp16));
obj->attr->pcidev.subdevice_id = tmp16;
} else {
/* TODO:
* bridge must lookup PCI_CAP_ID_SSVID and then look at offset+PCI_SSVID_VENDOR/DEVICE_ID
* cardbus must look at PCI_CB_SUBSYSTEM_VENDOR_ID and PCI_CB_SUBSYSTEM_ID
*/
}
/* get the vendor name */
vendorname = pci_device_get_vendor_name(pcidev);
if (vendorname && *vendorname)
hwloc_obj_add_info(obj, "PCIVendor", vendorname);
/* get the device name */
devicename = pci_device_get_device_name(pcidev);
if (devicename && *devicename)
hwloc_obj_add_info(obj, "PCIDevice", devicename);
/* generate or get the fullname */
snprintf(name, sizeof(name), "%s%s%s",
vendorname ? vendorname : "",
vendorname && devicename ? " " : "",
devicename ? devicename : "");
fullname = name;
if (*name)
obj->name = strdup(name);
hwloc_debug(" %04x:%02x:%02x.%01x %04x %04x:%04x %s\n",
domain, pcidev->bus, pcidev->dev, pcidev->func,
device_class, pcidev->vendor_id, pcidev->device_id,
fullname && *fullname ? fullname : "??");
/* queue the object for now */
if (first_obj)
last_obj->next_sibling = obj;
else
first_obj = obj;
last_obj = obj;
}
/* finalize device scanning */
pci_iterator_destroy(iter);
pci_system_cleanup();
#ifdef HWLOC_LINUX_SYS
dir = opendir("/sys/bus/pci/slots/");
if (dir) {
struct dirent *dirent;
while ((dirent = readdir(dir)) != NULL) {
char path[64];
FILE *file;
if (dirent->d_name[0] == '.')
continue;
snprintf(path, sizeof(path), "/sys/bus/pci/slots/%s/address", dirent->d_name);
file = fopen(path, "r");
if (file) {
unsigned domain, bus, dev;
if (fscanf(file, "%x:%x:%x", &domain, &bus, &dev) == 3) {
hwloc_obj_t obj = first_obj;
while (obj) {
if (obj->attr->pcidev.domain == domain
&& obj->attr->pcidev.bus == bus
&& obj->attr->pcidev.dev == dev
&& obj->attr->pcidev.func == 0) {
hwloc_obj_add_info(obj, "PCISlot", dirent->d_name);
break;
}
obj = obj->next_sibling;
}
}
fclose(file);
}
}
closedir(dir);
}
#endif
return hwloc_insert_pci_device_list(backend, first_obj);
}
int main(int argc, char **argv)
{
struct pci_device *dev;
void *bios;
int err, fd;
if (argc != 2)
usage();
err = pci_system_init();
if (err != 0) {
fprintf(stderr, "Couldn't initialize PCI system: %s\n",
strerror(err));
exit(1);
}
/* Grab the graphics card */
dev = pci_device_find_by_slot(0, 0, 2, 0);
if (dev == NULL)
errx(1, "Couldn't find graphics card");
err = pci_device_probe(dev);
if (err != 0) {
fprintf(stderr, "Couldn't probe graphics card: %s\n",
strerror(err));
exit(1);
}
if (dev->vendor_id != 0x8086)
errx(1, "Graphics card is non-intel");
/* Some versions of libpciaccess correct this automatically, but some
* don't. */
if (dev->rom_size == 0)
dev->rom_size = 64 * 1024;
bios = malloc(dev->rom_size);
if (bios == NULL)
errx(1, "Couldn't allocate memory for BIOS data\n");
err = pci_device_read_rom(dev, bios);
if (err != 0) {
fprintf(stderr, "Couldn't read graphics card ROM: %s\n",
strerror(err));
exit(1);
}
fd = open(argv[1], O_RDWR | O_CREAT | O_TRUNC, DEFFILEMODE);
if (fd < 0) {
fprintf(stderr, "Couldn't open output: %s\n", strerror(errno));
exit(1);
}
if (write(fd, bios, dev->rom_size) < dev->rom_size) {
fprintf(stderr, "Couldn't write BIOS data: %s\n",
strerror(errno));
exit(1);
}
close(fd);
pci_system_cleanup();
return 0;
}
int stop_pci_support(void){
pci_system_cleanup();
return 0;
}
int nva_init() {
int ret;
ret = pci_system_init();
if (ret)
return -1;
struct pci_id_match nv_match = {0x10de, PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY, 0x30000, 0xffff0000};
struct pci_device_iterator* it = pci_id_match_iterator_create(&nv_match);
if (!it) {
pci_system_cleanup();
return -1;
}
struct pci_device *dev;
while (dev = pci_device_next(it)) {
struct nva_card c = { 0 };
ret = pci_device_probe(dev);
if (ret) {
fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
continue;
}
c.pci = dev;
ADDARRAY(nva_cards, c);
}
pci_iterator_destroy(it);
struct pci_id_match nv_sgs_match = {0x12d2, PCI_MATCH_ANY, PCI_MATCH_ANY, PCI_MATCH_ANY, 0x30000, 0xffff0000};
it = pci_id_match_iterator_create(&nv_sgs_match);
if (!it) {
pci_system_cleanup();
return -1;
}
while (dev = pci_device_next(it)) {
struct nva_card c = { 0 };
ret = pci_device_probe(dev);
if (ret) {
fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
continue;
}
c.pci = dev;
ADDARRAY(nva_cards, c);
}
pci_iterator_destroy(it);
int i;
for (i = 0; i < nva_cardsnum; i++) {
dev = nva_cards[i].pci;
ret = pci_device_map_range(dev, dev->regions[0].base_addr, dev->regions[0].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar0);
if (ret)
return -1;
nva_cards[i].boot0 = nva_rd32(i, 0);
nva_cards[i].chipset = nva_cards[i].boot0 >> 20 & 0xff;
if (nva_cards[i].chipset < 0x10) {
if (nva_cards[i].boot0 & 0xf000) {
if (nva_cards[i].boot0 & 0xf00000)
nva_cards[i].chipset = 5;
else
nva_cards[i].chipset = 4;
} else {
nva_cards[i].chipset = nva_cards[i].boot0 >> 16 & 0xf;
if ((nva_cards[i].boot0 & 0xff) >= 0x20)
nva_cards[i].is_nv03p = 1;
}
}
if (nva_cards[i].chipset < 0x04)
nva_cards[i].card_type = nva_cards[i].chipset;
else if (nva_cards[i].chipset < 0x10)
nva_cards[i].card_type = 0x04;
else if (nva_cards[i].chipset < 0x20)
nva_cards[i].card_type = 0x10;
else if (nva_cards[i].chipset < 0x30)
nva_cards[i].card_type = 0x20;
else if (nva_cards[i].chipset < 0x40)
nva_cards[i].card_type = 0x30;
else if (nva_cards[i].chipset < 0x50 ||
nva_cards[i].chipset & 0xf0 == 0x60)
nva_cards[i].card_type = 0x40;
else if (nva_cards[i].chipset < 0xc0)
nva_cards[i].card_type = 0x50;
else
nva_cards[i].card_type = 0xc0;
}
return 0;
}
static int
hwloc_look_pci(struct hwloc_backend *backend)
{
struct hwloc_topology *topology = backend->topology;
struct hwloc_obj *first_obj = NULL, *last_obj = NULL;
#ifdef HWLOC_HAVE_LIBPCIACCESS
int ret;
struct pci_device_iterator *iter;
struct pci_device *pcidev;
#else /* HWLOC_HAVE_PCIUTILS */
struct pci_access *pciaccess;
struct pci_dev *pcidev;
#endif
if (!(hwloc_topology_get_flags(topology) & (HWLOC_TOPOLOGY_FLAG_IO_DEVICES|HWLOC_TOPOLOGY_FLAG_WHOLE_IO)))
return 0;
if (hwloc_get_next_pcidev(topology, NULL)) {
hwloc_debug("%s", "PCI objects already added, ignoring pci backend.\n");
return 0;
}
if (!hwloc_topology_is_thissystem(topology)) {
hwloc_debug("%s", "\nno PCI detection (not thissystem)\n");
return 0;
}
hwloc_debug("%s", "\nScanning PCI buses...\n");
/* initialize PCI scanning */
#ifdef HWLOC_HAVE_LIBPCIACCESS
ret = pci_system_init();
if (ret) {
hwloc_debug("%s", "Can not initialize libpciaccess\n");
return -1;
}
iter = pci_slot_match_iterator_create(NULL);
#else /* HWLOC_HAVE_PCIUTILS */
pciaccess = pci_alloc();
pciaccess->error = hwloc_pci_error;
pciaccess->warning = hwloc_pci_warning;
if (setjmp(err_buf)) {
pci_cleanup(pciaccess);
return -1;
}
pci_init(pciaccess);
pci_scan_bus(pciaccess);
#endif
/* iterate over devices */
#ifdef HWLOC_HAVE_LIBPCIACCESS
for (pcidev = pci_device_next(iter);
pcidev;
pcidev = pci_device_next(iter))
#else /* HWLOC_HAVE_PCIUTILS */
for (pcidev = pciaccess->devices;
pcidev;
pcidev = pcidev->next)
#endif
{
const char *vendorname, *devicename, *fullname;
unsigned char config_space_cache[CONFIG_SPACE_CACHESIZE];
struct hwloc_obj *obj;
unsigned os_index;
unsigned domain;
unsigned device_class;
unsigned short tmp16;
char name[128];
unsigned offset;
#ifdef HWLOC_HAVE_PCI_FIND_CAP
struct pci_cap *cap;
#endif
/* initialize the config space in case we fail to read it (missing permissions, etc). */
memset(config_space_cache, 0xff, CONFIG_SPACE_CACHESIZE);
#ifdef HWLOC_HAVE_LIBPCIACCESS
pci_device_probe(pcidev);
pci_device_cfg_read(pcidev, config_space_cache, 0, CONFIG_SPACE_CACHESIZE, NULL);
#else /* HWLOC_HAVE_PCIUTILS */
pci_read_block(pcidev, 0, config_space_cache, CONFIG_SPACE_CACHESIZE); /* doesn't even tell how much it actually reads */
#endif
/* try to read the domain */
#if (defined HWLOC_HAVE_LIBPCIACCESS) || (defined HWLOC_HAVE_PCIDEV_DOMAIN)
domain = pcidev->domain;
#else
domain = 0; /* default domain number */
#endif
/* try to read the device_class */
#ifdef HWLOC_HAVE_LIBPCIACCESS
device_class = pcidev->device_class >> 8;
#else /* HWLOC_HAVE_PCIUTILS */
#ifdef HWLOC_HAVE_PCIDEV_DEVICE_CLASS
device_class = pcidev->device_class;
#else
device_class = config_space_cache[PCI_CLASS_DEVICE] | (config_space_cache[PCI_CLASS_DEVICE+1] << 8);
#endif
#endif
/* might be useful for debugging (note that domain might be truncated) */
os_index = (domain << 20) + (pcidev->bus << 12) + (pcidev->dev << 4) + pcidev->func;
obj = hwloc_alloc_setup_object(HWLOC_OBJ_PCI_DEVICE, os_index);
obj->attr->pcidev.domain = domain;
obj->attr->pcidev.bus = pcidev->bus;
obj->attr->pcidev.dev = pcidev->dev;
obj->attr->pcidev.func = pcidev->func;
obj->attr->pcidev.vendor_id = pcidev->vendor_id;
obj->attr->pcidev.device_id = pcidev->device_id;
obj->attr->pcidev.class_id = device_class;
obj->attr->pcidev.revision = config_space_cache[PCI_REVISION_ID];
obj->attr->pcidev.linkspeed = 0; /* unknown */
#ifdef HWLOC_HAVE_PCI_FIND_CAP
cap = pci_find_cap(pcidev, PCI_CAP_ID_EXP, PCI_CAP_NORMAL);
offset = cap ? cap->addr : 0;
#else
offset = hwloc_pci_find_cap(config_space_cache, PCI_CAP_ID_EXP);
#endif /* HWLOC_HAVE_PCI_FIND_CAP */
if (0xffff == pcidev->vendor_id && 0xffff == pcidev->device_id) {
/* SR-IOV puts ffff:ffff in Virtual Function config space.
* The actual VF device ID is stored at a special (dynamic) location in the Physical Function config space.
* VF and PF have the same vendor ID.
*
* libpciaccess just returns ffff:ffff, needs to be fixed.
* linuxpci is OK because sysfs files are already fixed the kernel.
* pciutils is OK when it uses those Linux sysfs files.
*
* Reading these files is an easy way to work around the libpciaccess issue on Linux,
* but we have no way to know if this is caused by SR-IOV or not.
*
* TODO:
* If PF has CAP_ID_PCIX or CAP_ID_EXP (offset>0),
* look for extended capability PCI_EXT_CAP_ID_SRIOV (need extended config space (more than 256 bytes)),
* then read the VF device ID after it (PCI_IOV_DID bytes later).
* Needs access to extended config space (needs root on Linux).
* TODO:
* Add string info attributes in VF and PF objects?
*/
#ifdef HWLOC_LINUX_SYS
/* Workaround for Linux (the kernel returns the VF device/vendor IDs). */
char path[64];
char value[16];
FILE *file;
snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/vendor",
domain, pcidev->bus, pcidev->dev, pcidev->func);
file = fopen(path, "r");
if (file) {
fread(value, sizeof(value), 1, file);
fclose(file);
obj->attr->pcidev.vendor_id = strtoul(value, NULL, 16);
}
snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/device",
domain, pcidev->bus, pcidev->dev, pcidev->func);
file = fopen(path, "r");
if (file) {
fread(value, sizeof(value), 1, file);
fclose(file);
obj->attr->pcidev.device_id = strtoul(value, NULL, 16);
}
#endif
}
if (offset > 0 && offset + 20 /* size of PCI express block up to link status */ <= CONFIG_SPACE_CACHESIZE)
hwloc_pci_find_linkspeed(config_space_cache, offset, &obj->attr->pcidev.linkspeed);
hwloc_pci_prepare_bridge(obj, config_space_cache);
if (obj->type == HWLOC_OBJ_PCI_DEVICE) {
memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_VENDOR_ID], sizeof(tmp16));
obj->attr->pcidev.subvendor_id = tmp16;
memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_ID], sizeof(tmp16));
obj->attr->pcidev.subdevice_id = tmp16;
} else {
/* TODO:
* bridge must lookup PCI_CAP_ID_SSVID and then look at offset+PCI_SSVID_VENDOR/DEVICE_ID
* cardbus must look at PCI_CB_SUBSYSTEM_VENDOR_ID and PCI_CB_SUBSYSTEM_ID
*/
}
/* starting from pciutils 2.2, pci_lookup_name() takes a variable number
* of arguments, and supports the PCI_LOOKUP_NO_NUMBERS flag.
*/
/* get the vendor name */
#ifdef HWLOC_HAVE_LIBPCIACCESS
vendorname = pci_device_get_vendor_name(pcidev);
#else /* HWLOC_HAVE_PCIUTILS */
vendorname = pci_lookup_name(pciaccess, name, sizeof(name),
#if HAVE_DECL_PCI_LOOKUP_NO_NUMBERS
PCI_LOOKUP_VENDOR|PCI_LOOKUP_NO_NUMBERS,
pcidev->vendor_id
#else
PCI_LOOKUP_VENDOR,
pcidev->vendor_id, 0, 0, 0
#endif
);
#endif /* HWLOC_HAVE_PCIUTILS */
if (vendorname && *vendorname)
hwloc_obj_add_info(obj, "PCIVendor", vendorname);
/* get the device name */
#ifdef HWLOC_HAVE_LIBPCIACCESS
devicename = pci_device_get_device_name(pcidev);
#else /* HWLOC_HAVE_PCIUTILS */
devicename = pci_lookup_name(pciaccess, name, sizeof(name),
#if HAVE_DECL_PCI_LOOKUP_NO_NUMBERS
PCI_LOOKUP_DEVICE|PCI_LOOKUP_NO_NUMBERS,
pcidev->vendor_id, pcidev->device_id
#else
PCI_LOOKUP_DEVICE,
pcidev->vendor_id, pcidev->device_id, 0, 0
#endif
);
#endif /* HWLOC_HAVE_PCIUTILS */
if (devicename && *devicename)
hwloc_obj_add_info(obj, "PCIDevice", devicename);
/* generate or get the fullname */
#ifdef HWLOC_HAVE_LIBPCIACCESS
snprintf(name, sizeof(name), "%s%s%s",
vendorname ? vendorname : "",
vendorname && devicename ? " " : "",
devicename ? devicename : "");
fullname = name;
if (*name)
obj->name = strdup(name);
#else /* HWLOC_HAVE_PCIUTILS */
fullname = pci_lookup_name(pciaccess, name, sizeof(name),
#if HAVE_DECL_PCI_LOOKUP_NO_NUMBERS
PCI_LOOKUP_VENDOR|PCI_LOOKUP_DEVICE|PCI_LOOKUP_NO_NUMBERS,
pcidev->vendor_id, pcidev->device_id
#else
PCI_LOOKUP_VENDOR|PCI_LOOKUP_DEVICE,
pcidev->vendor_id, pcidev->device_id, 0, 0
#endif
);
if (fullname && *fullname)
obj->name = strdup(fullname);
#endif /* HWLOC_HAVE_PCIUTILS */
hwloc_debug(" %04x:%02x:%02x.%01x %04x %04x:%04x %s\n",
domain, pcidev->bus, pcidev->dev, pcidev->func,
device_class, pcidev->vendor_id, pcidev->device_id,
fullname && *fullname ? fullname : "??");
/* queue the object for now */
if (first_obj)
last_obj->next_sibling = obj;
else
first_obj = obj;
last_obj = obj;
}
/* finalize device scanning */
#ifdef HWLOC_HAVE_LIBPCIACCESS
pci_iterator_destroy(iter);
pci_system_cleanup();
#else /* HWLOC_HAVE_PCIUTILS */
pci_cleanup(pciaccess);
#endif
return hwloc_insert_pci_device_list(backend, first_obj);
}
static int
hwloc_look_pci(struct hwloc_backend *backend)
{
struct hwloc_topology *topology = backend->topology;
enum hwloc_type_filter_e pfilter, bfilter;
struct hwloc_obj *tree = NULL, *tmp;
int ret;
struct pci_device_iterator *iter;
struct pci_device *pcidev;
hwloc_topology_get_type_filter(topology, HWLOC_OBJ_PCI_DEVICE, &pfilter);
hwloc_topology_get_type_filter(topology, HWLOC_OBJ_BRIDGE, &bfilter);
if (bfilter == HWLOC_TYPE_FILTER_KEEP_NONE
&& pfilter == HWLOC_TYPE_FILTER_KEEP_NONE)
return 0;
/* don't do anything if another backend attached PCI already
* (they are attached to root until later in the core discovery)
*/
tmp = hwloc_get_root_obj(topology)->io_first_child;
while (tmp) {
if (tmp->type == HWLOC_OBJ_PCI_DEVICE
|| (tmp->type == HWLOC_OBJ_BRIDGE && tmp->attr->bridge.downstream_type == HWLOC_OBJ_BRIDGE_PCI)) {
hwloc_debug("%s", "PCI objects already added, ignoring linuxpci backend.\n");
return 0;
}
tmp = tmp->next_sibling;
}
hwloc_debug("%s", "\nScanning PCI buses...\n");
/* initialize PCI scanning */
ret = pci_system_init();
if (ret) {
hwloc_debug("%s", "Can not initialize libpciaccess\n");
return -1;
}
iter = pci_slot_match_iterator_create(NULL);
/* iterate over devices */
for (pcidev = pci_device_next(iter);
pcidev;
pcidev = pci_device_next(iter))
{
const char *vendorname, *devicename;
unsigned char config_space_cache[CONFIG_SPACE_CACHESIZE];
hwloc_obj_type_t type;
struct hwloc_obj *obj;
unsigned domain;
unsigned device_class;
unsigned short tmp16;
unsigned offset;
/* initialize the config space in case we fail to read it (missing permissions, etc). */
memset(config_space_cache, 0xff, CONFIG_SPACE_CACHESIZE);
pci_device_probe(pcidev);
pci_device_cfg_read(pcidev, config_space_cache, 0, CONFIG_SPACE_CACHESIZE, NULL);
/* try to read the domain */
domain = pcidev->domain;
/* try to read the device_class */
device_class = pcidev->device_class >> 8;
/* bridge or pci dev? */
type = hwloc_pcidisc_check_bridge_type(device_class, config_space_cache);
/* filtered? */
if (type == HWLOC_OBJ_PCI_DEVICE) {
enum hwloc_type_filter_e filter;
hwloc_topology_get_type_filter(topology, HWLOC_OBJ_PCI_DEVICE, &filter);
if (filter == HWLOC_TYPE_FILTER_KEEP_NONE)
continue;
if (filter == HWLOC_TYPE_FILTER_KEEP_IMPORTANT
&& !hwloc_filter_check_pcidev_subtype_important(device_class))
continue;
} else if (type == HWLOC_OBJ_BRIDGE) {
enum hwloc_type_filter_e filter;
hwloc_topology_get_type_filter(topology, HWLOC_OBJ_BRIDGE, &filter);
if (filter == HWLOC_TYPE_FILTER_KEEP_NONE)
continue;
/* HWLOC_TYPE_FILTER_KEEP_IMPORTANT filtered later in the core */
}
/* fixup SR-IOV buggy VF device/vendor IDs */
if (0xffff == pcidev->vendor_id && 0xffff == pcidev->device_id) {
/* SR-IOV puts ffff:ffff in Virtual Function config space.
* The actual VF device ID is stored at a special (dynamic) location in the Physical Function config space.
* VF and PF have the same vendor ID.
*
* libpciaccess just returns ffff:ffff, needs to be fixed.
* linuxpci is OK because sysfs files are already fixed in the kernel.
* (pciutils is OK when it uses those Linux sysfs files.)
*
* Reading these files is an easy way to work around the libpciaccess issue on Linux,
* but we have no way to know if this is caused by SR-IOV or not.
*
* TODO:
* If PF has CAP_ID_PCIX or CAP_ID_EXP (offset>0),
* look for extended capability PCI_EXT_CAP_ID_SRIOV (need extended config space (more than 256 bytes)),
* then read the VF device ID after it (PCI_IOV_DID bytes later).
* Needs access to extended config space (needs root on Linux).
* TODO:
* Add string info attributes in VF and PF objects?
*/
#ifdef HWLOC_LINUX_SYS
/* Workaround for Linux (the kernel returns the VF device/vendor IDs). */
char path[64];
char value[16];
FILE *file;
size_t read;
snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/vendor",
domain, pcidev->bus, pcidev->dev, pcidev->func);
file = fopen(path, "r");
if (file) {
read = fread(value, 1, sizeof(value), file);
fclose(file);
if (read)
/* fixup the pciaccess struct so that pci_device_get_vendor_name() is correct later. */
pcidev->vendor_id = strtoul(value, NULL, 16);
}
snprintf(path, sizeof(path), "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/device",
domain, pcidev->bus, pcidev->dev, pcidev->func);
file = fopen(path, "r");
if (file) {
read = fread(value, 1, sizeof(value), file);
fclose(file);
if (read)
/* fixup the pciaccess struct so that pci_device_get_device_name() is correct later. */
pcidev->device_id = strtoul(value, NULL, 16);
}
#endif
}
obj = hwloc_alloc_setup_object(topology, type, HWLOC_UNKNOWN_INDEX);
obj->attr->pcidev.domain = domain;
obj->attr->pcidev.bus = pcidev->bus;
obj->attr->pcidev.dev = pcidev->dev;
obj->attr->pcidev.func = pcidev->func;
obj->attr->pcidev.vendor_id = pcidev->vendor_id;
obj->attr->pcidev.device_id = pcidev->device_id;
obj->attr->pcidev.class_id = device_class;
obj->attr->pcidev.revision = config_space_cache[PCI_REVISION_ID];
obj->attr->pcidev.linkspeed = 0; /* unknown */
offset = hwloc_pcidisc_find_cap(config_space_cache, PCI_CAP_ID_EXP);
if (offset > 0 && offset + 20 /* size of PCI express block up to link status */ <= CONFIG_SPACE_CACHESIZE)
hwloc_pcidisc_find_linkspeed(config_space_cache, offset, &obj->attr->pcidev.linkspeed);
if (type == HWLOC_OBJ_BRIDGE) {
if (hwloc_pcidisc_setup_bridge_attr(obj, config_space_cache) < 0)
continue;
}
if (obj->type == HWLOC_OBJ_PCI_DEVICE) {
memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_VENDOR_ID], sizeof(tmp16));
obj->attr->pcidev.subvendor_id = tmp16;
memcpy(&tmp16, &config_space_cache[PCI_SUBSYSTEM_ID], sizeof(tmp16));
obj->attr->pcidev.subdevice_id = tmp16;
} else {
/* TODO:
* bridge must lookup PCI_CAP_ID_SSVID and then look at offset+PCI_SSVID_VENDOR/DEVICE_ID
* cardbus must look at PCI_CB_SUBSYSTEM_VENDOR_ID and PCI_CB_SUBSYSTEM_ID
*/
}
/* get the vendor name */
vendorname = pci_device_get_vendor_name(pcidev);
if (vendorname && *vendorname)
hwloc_obj_add_info(obj, "PCIVendor", vendorname);
/* get the device name */
devicename = pci_device_get_device_name(pcidev);
if (devicename && *devicename)
hwloc_obj_add_info(obj, "PCIDevice", devicename);
hwloc_debug(" %04x:%02x:%02x.%01x %04x %04x:%04x %s %s\n",
domain, pcidev->bus, pcidev->dev, pcidev->func,
device_class, pcidev->vendor_id, pcidev->device_id,
vendorname && *vendorname ? vendorname : "??",
devicename && *devicename ? devicename : "??");
hwloc_pcidisc_tree_insert_by_busid(&tree, obj);
}
/* finalize device scanning */
pci_iterator_destroy(iter);
pci_system_cleanup();
hwloc_pcidisc_tree_attach(topology, tree);
return 0;
}
int nva_init() {
int ret;
ret = pci_system_init();
if (ret)
return -1;
int i;
for (i = 0; i < ARRAY_SIZE(nv_match); i++) {
struct pci_device_iterator* it = pci_id_match_iterator_create(&nv_match[i]);
if (!it) {
pci_system_cleanup();
return -1;
}
struct pci_device *dev;
while ((dev = pci_device_next(it))) {
struct nva_card c = { 0 };
ret = pci_device_probe(dev);
if (ret) {
fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
continue;
}
c.pci = dev;
ADDARRAY(nva_cards, c);
}
pci_iterator_destroy(it);
}
for (i = 0; i < nva_cardsnum; i++) {
struct pci_device *dev;
dev = nva_cards[i].pci;
ret = pci_device_map_range(dev, dev->regions[0].base_addr, dev->regions[0].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar0);
if (ret) {
fprintf (stderr, "WARN: Can't probe %04x:%02x:%02x.%x\n", dev->domain, dev->bus, dev->dev, dev->func);
int j;
for (j = i + 1; j < nva_cardsnum; j++) {
nva_cards[j-1] = nva_cards[j];
}
nva_cardsnum--;
i--;
continue;
}
nva_cards[i].bar0len = dev->regions[0].size;
if (dev->regions[1].size) {
nva_cards[i].hasbar1 = 1;
nva_cards[i].bar1len = dev->regions[1].size;
ret = pci_device_map_range(dev, dev->regions[1].base_addr, dev->regions[1].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar1);
if (ret) {
nva_cards[i].bar1 = 0;
}
}
if (dev->regions[2].size) {
nva_cards[i].hasbar2 = 1;
nva_cards[i].bar2len = dev->regions[2].size;
ret = pci_device_map_range(dev, dev->regions[2].base_addr, dev->regions[2].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar2);
if (ret) {
nva_cards[i].bar2 = 0;
}
} else if (dev->regions[3].size) {
nva_cards[i].hasbar2 = 1;
nva_cards[i].bar2len = dev->regions[3].size;
ret = pci_device_map_range(dev, dev->regions[3].base_addr, dev->regions[3].size, PCI_DEV_MAP_FLAG_WRITABLE, &nva_cards[i].bar2);
if (ret) {
nva_cards[i].bar2 = 0;
}
}
uint32_t pmc_id = nva_rd32(i, 0);
parse_pmc_id(pmc_id, &nva_cards[i].chipset);
}
return (nva_cardsnum == 0);
}
int main( int argc, char ** argv ) {
struct pci_device * dev;
uint8_t val;
int newval;
int mode;
int argp;
setuid(0);
if( pci_system_init() ) {
fprintf( stderr, "ERROR: PCI bus init failed. No root?\n" );
exit( 1 );
}
dev = pci_device_find_by_slot( 0, 0, 2, 1 );
if( !isNc10( dev ) ) {
fprintf( stderr, "ERROR: This device does not look not like a Samsung NC10.\n" );
exit( 1 );
}
mode = 0;
argp = 1;
switch( argc ) {
case 1:
mode = 0;
break;
case 2:
if( !strcmp( "-get", argv[argp] ) ) {
mode=0;
argp++;
} else {
usage();
exit( 1 );
}
break;
case 3:
if( !strcmp( "-set", argv[argp] ) || !strcmp( "=", argv[argp] ) ) {
mode = 1;
argp++;
} else if( !strcmp( "-inc", argv[argp] ) || !strcmp( "+", argv[argp] ) ) {
mode = 2;
argp++;
} else if( !strcmp( "-dec", argv[argp] ) || !strcmp( "-", argv[argp] ) ) {
mode = 3;
argp++;
} else {
usage();
exit( 1 );
}
break;
default:
usage();
exit( 1 );
}
switch( mode ) {
case 0: /* get */
val = getBrightness( dev );
printf("%d\n", val);
break;
case 1: /* set */
val = (uint8_t) atoi( argv[argp] );
setBrightness( dev, val );
break;
case 2: /* inc */
val = getBrightness( dev );
newval = val + atoi( argv[argp] );
if( newval > 255 ) newval = 255;
setBrightness( dev, (uint8_t) newval );
break;
case 3: /* dec */
val = getBrightness( dev );
newval = val - atoi( argv[argp] );
if( newval < 0 ) newval = 0;
setBrightness( dev, (uint8_t) newval );
break;
}
pci_system_cleanup();
return 0;
}