14 #ifndef HWLOC_OPENCL_H 
   15 #define HWLOC_OPENCL_H 
   18 #include "hwloc/autogen/config.h" 
   19 #include "hwloc/helper.h" 
   20 #ifdef HWLOC_LINUX_SYS 
   21 #include "hwloc/linux.h" 
   25 #include <OpenCL/cl.h> 
   45 #define HWLOC_CL_DEVICE_TOPOLOGY_AMD 0x4037 
   47     struct { cl_uint type; cl_uint data[5]; } raw;
 
   48     struct { cl_uint type; cl_char unused[17]; cl_char 
bus; cl_char device; cl_char 
function; } pcie;
 
   50 #define HWLOC_CL_DEVICE_TOPOLOGY_TYPE_PCIE_AMD 1 
   53 #define HWLOC_CL_DEVICE_PCI_BUS_ID_NV 0x4008 
   54 #define HWLOC_CL_DEVICE_PCI_SLOT_ID_NV 0x4009 
   55 #define HWLOC_CL_DEVICE_PCI_DOMAIN_ID_NV 0x400A 
   73 static __hwloc_inline 
int 
   75                                unsigned *domain, 
unsigned *bus, 
unsigned *dev, 
unsigned *func)
 
   78         cl_uint nvbus, nvslot, nvdomain;
 
   81         clret = clGetDeviceInfo(device, HWLOC_CL_DEVICE_TOPOLOGY_AMD, 
sizeof(amdtopo), &amdtopo, NULL);
 
   82         if (CL_SUCCESS == clret
 
   83             && HWLOC_CL_DEVICE_TOPOLOGY_TYPE_PCIE_AMD == amdtopo.
raw.
type) {
 
   86                 *bus = (unsigned) (
unsigned char) amdtopo.
pcie.
bus;
 
   87                 *dev = (unsigned) (
unsigned char) amdtopo.
pcie.
device;
 
   88                 *func = (unsigned) (
unsigned char) amdtopo.
pcie.
function;
 
   92         clret = clGetDeviceInfo(device, HWLOC_CL_DEVICE_PCI_BUS_ID_NV, 
sizeof(nvbus), &nvbus, NULL);
 
   93         if (CL_SUCCESS == clret) {
 
   94                 clret = clGetDeviceInfo(device, HWLOC_CL_DEVICE_PCI_SLOT_ID_NV, 
sizeof(nvslot), &nvslot, NULL);
 
   95                 if (CL_SUCCESS == clret) {
 
   96                         clret = clGetDeviceInfo(device, HWLOC_CL_DEVICE_PCI_DOMAIN_ID_NV, 
sizeof(nvdomain), &nvdomain, NULL);
 
   97                         if (CL_SUCCESS == clret) { 
 
  105                         *func = nvslot & 0x7;
 
  130 static __hwloc_inline 
int 
  132                                cl_device_id device __hwloc_attribute_unused,
 
  135 #if (defined HWLOC_LINUX_SYS) 
  137 #define HWLOC_OPENCL_DEVICE_SYSFS_PATH_MAX 128 
  138         char path[HWLOC_OPENCL_DEVICE_SYSFS_PATH_MAX];
 
  139         unsigned pcidomain, pcibus, pcidev, pcifunc;
 
  151         sprintf(path, 
"/sys/bus/pci/devices/%04x:%02x:%02x.%01x/local_cpus", pcidomain, pcibus, pcidev, pcifunc);
 
  179                                        unsigned platform_index, 
unsigned device_index)
 
  181         unsigned x = (unsigned) -1, y = (
unsigned) -1;
 
  186                     && sscanf(osdev->
name, 
"opencl%ud%u", &x, &y) == 2
 
  187                     && platform_index == x && device_index == y)
 
  215                               cl_device_id device __hwloc_attribute_unused)
 
  218         unsigned pcidomain, pcibus, pcidevice, pcifunc;
 
  228                 if (strncmp(osdev->
name, 
"opencl", 6))
 
hwloc_bitmap_t hwloc_cpuset_t
A CPU set is a bitmap whose bits are set according to CPU physical OS indexes.
Definition: hwloc.h:140
@ HWLOC_OBJ_OSDEV_COPROC
Operating system co-processor device. For instance "opencl0d0" for a OpenCL device,...
Definition: hwloc.h:352
@ HWLOC_OBJ_PCI_DEVICE
PCI device (filtered out by default).
Definition: hwloc.h:269
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition: hwloc.h:691
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology)
Does the topology context come from this system?
hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset(hwloc_topology_t topology)
Get complete CPU set.
static hwloc_obj_t hwloc_get_next_osdev(hwloc_topology_t topology, hwloc_obj_t prev)
Get the next OS device in the system.
Definition: helper.h:1151
int hwloc_bitmap_iszero(hwloc_const_bitmap_t bitmap)
Test whether bitmap bitmap is empty.
int hwloc_bitmap_copy(hwloc_bitmap_t dst, hwloc_const_bitmap_t src)
Copy the contents of bitmap src into the already allocated bitmap dst.
int hwloc_linux_read_path_as_cpumask(const char *path, hwloc_bitmap_t set)
Convert a linux kernel cpumask file path into a hwloc bitmap set.
static int hwloc_opencl_get_device_pci_busid(cl_device_id device, unsigned *domain, unsigned *bus, unsigned *dev, unsigned *func)
Return the domain, bus and device IDs of the OpenCL device device.
Definition: opencl.h:74
static int hwloc_opencl_get_device_cpuset(hwloc_topology_t topology, cl_device_id device, hwloc_cpuset_t set)
Get the CPU set of processors that are physically close to OpenCL device device.
Definition: opencl.h:131
static hwloc_obj_t hwloc_opencl_get_device_osdev(hwloc_topology_t topology, cl_device_id device)
Get the hwloc OS device object corresponding to OpenCL device deviceX.
Definition: opencl.h:214
static hwloc_obj_t hwloc_opencl_get_device_osdev_by_index(hwloc_topology_t topology, unsigned platform_index, unsigned device_index)
Get the hwloc OS device object corresponding to the OpenCL device for the given indexes.
Definition: opencl.h:178
Structure of a topology object.
Definition: hwloc.h:395
char * name
Object-specific name if any. Mostly used for identifying OS devices and Misc objects where a name str...
Definition: hwloc.h:407
hwloc_obj_type_t type
Type of object.
Definition: hwloc.h:397
union hwloc_obj_attr_u * attr
Object type-specific Attributes, may be NULL if no attribute value was found.
Definition: hwloc.h:414
struct hwloc_obj * parent
Parent, NULL if root (Machine object)
Definition: hwloc.h:445
struct hwloc_obj_attr_u::hwloc_pcidev_attr_s pcidev
struct hwloc_obj_attr_u::hwloc_osdev_attr_s osdev
unsigned char dev
Definition: hwloc.h:638
unsigned char func
Definition: hwloc.h:638
unsigned short domain
Definition: hwloc.h:634
unsigned char bus
Definition: hwloc.h:638
hwloc_obj_osdev_type_t type
Definition: hwloc.h:665
cl_char device
Definition: opencl.h:48
struct hwloc_cl_device_topology_amd::@4 pcie
cl_char bus
Definition: opencl.h:48
cl_char function
Definition: opencl.h:48
struct hwloc_cl_device_topology_amd::@3 raw
cl_uint type
Definition: opencl.h:47