typedef xen_sysctl_cputopo_t xc_cputopo_t;
typedef xen_sysctl_numainfo_t xc_numainfo_t;
typedef xen_sysctl_meminfo_t xc_meminfo_t;
+typedef xen_sysctl_pcitopoinfo_t xc_pcitopoinfo_t;
typedef uint32_t xc_cpu_to_node_t;
typedef uint32_t xc_cpu_to_socket_t;
xc_cputopo_t *cputopo);
int xc_numainfo(xc_interface *xch, unsigned *max_nodes,
xc_meminfo_t *meminfo, uint32_t *distance);
+int xc_pcitopoinfo(xc_interface *xch, unsigned num_devs,
+ physdev_pci_device_t *devs, uint32_t *nodes);
int xc_sched_id(xc_interface *xch,
int *sched_id);
return ret;
}
+int xc_pcitopoinfo(xc_interface *xch, unsigned num_devs,
+ physdev_pci_device_t *devs,
+ uint32_t *nodes)
+{
+ int ret = 0;
+ unsigned processed = 0;
+ DECLARE_SYSCTL;
+ DECLARE_HYPERCALL_BOUNCE(devs, num_devs * sizeof(*devs),
+ XC_HYPERCALL_BUFFER_BOUNCE_IN);
+ DECLARE_HYPERCALL_BOUNCE(nodes, num_devs* sizeof(*nodes),
+ XC_HYPERCALL_BUFFER_BOUNCE_BOTH);
+
+ if ( (ret = xc_hypercall_bounce_pre(xch, devs)) )
+ goto out;
+ if ( (ret = xc_hypercall_bounce_pre(xch, nodes)) )
+ goto out;
+
+ sysctl.cmd = XEN_SYSCTL_pcitopoinfo;
+
+ while ( processed < num_devs )
+ {
+ sysctl.u.pcitopoinfo.num_devs = num_devs - processed;
+ set_xen_guest_handle_offset(sysctl.u.pcitopoinfo.devs, devs,
+ processed);
+ set_xen_guest_handle_offset(sysctl.u.pcitopoinfo.nodes, nodes,
+ processed);
+
+ if ( (ret = do_sysctl(xch, &sysctl)) != 0 )
+ break;
+
+ processed += sysctl.u.pcitopoinfo.num_devs;
+ }
+
+ out:
+ xc_hypercall_bounce_post(xch, devs);
+ xc_hypercall_bounce_post(xch, nodes);
+
+ return ret;
+}
int xc_sched_id(xc_interface *xch,
int *sched_id)
return ret;
}
+libxl_pcitopology *libxl_get_pci_topology(libxl_ctx *ctx, int *num_devs)
+{
+ GC_INIT(ctx);
+ physdev_pci_device_t *devs;
+ uint32_t *nodes;
+ libxl_pcitopology *ret = NULL;
+ int i, rc;
+
+ *num_devs = libxl__pci_numdevs(gc);
+ if (*num_devs < 0) {
+ LOG(ERROR, "Unable to determine number of PCI devices, rc %d",
+ *num_devs);
+ goto out;
+ }
+
+ devs = libxl__zalloc(gc, sizeof(*devs) * *num_devs);
+ nodes = libxl__zalloc(gc, sizeof(*nodes) * *num_devs);
+
+ rc = libxl__pci_topology_init(gc, devs, *num_devs);
+ if (rc) {
+ LOG(ERROR, "Cannot initialize PCI hypercall structure, rc %d", rc);
+ goto out;
+ }
+
+ if (xc_pcitopoinfo(ctx->xch, *num_devs, devs, nodes) != 0) {
+ LOGE(ERROR, "PCI topology info hypercall failed");
+ goto out;
+ }
+
+ ret = libxl__zalloc(NOGC, sizeof(libxl_pcitopology) * *num_devs);
+
+ for (i = 0; i < *num_devs; i++) {
+ ret[i].seg = devs[i].seg;
+ ret[i].bus = devs[i].bus;
+ ret[i].devfn = devs[i].devfn;
+ ret[i].node = ((nodes[i] == XEN_INVALID_NODE_ID) ||
+ (nodes[i] == XEN_INVALID_DEV)) ?
+ LIBXL_PCITOPOLOGY_INVALID_ENTRY : nodes[i];
+ }
+
+ out:
+ GC_FREE;
+ return ret;
+}
+
libxl_numainfo *libxl_get_numainfo(libxl_ctx *ctx, int *nr)
{
GC_INIT(ctx);
#define LIBXL_HAVE_PSR_MBM 1
#endif
+/*
+ * LIBXL_HAVE_PCITOPOLOGY
+ *
+ * If this is defined, then interface to query hypervisor about PCI device
+ * topology is available.
+ */
+#define LIBXL_HAVE_PCITOPOLOGY 1
+
typedef char **libxl_string_list;
void libxl_string_list_dispose(libxl_string_list *sl);
int libxl_string_list_length(const libxl_string_list *sl);
libxl_cputopology *libxl_get_cpu_topology(libxl_ctx *ctx, int *nb_cpu_out);
void libxl_cputopology_list_free(libxl_cputopology *, int nb_cpu);
+#define LIBXL_PCITOPOLOGY_INVALID_ENTRY (~(uint32_t)0)
+libxl_pcitopology *libxl_get_pci_topology(libxl_ctx *ctx, int *num_devs);
+void libxl_pcitopology_list_free(libxl_pcitopology *, int num_devs);
+
#define LIBXL_NUMAINFO_INVALID_ENTRY (~(uint32_t)0)
libxl_numainfo *libxl_get_numainfo(libxl_ctx *ctx, int *nr);
void libxl_numainfo_list_free(libxl_numainfo *, int nr);
{
return LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN;
}
+
+int libxl__pci_numdevs(libxl__gc *gc)
+{
+ return ERROR_NI;
+}
+
+int libxl__pci_topology_init(libxl__gc *gc,
+ physdev_pci_device_t *devs,
+ int num_devs)
+{
+ return ERROR_NI;
+}
_hidden char *libxl__devid_to_localdev(libxl__gc *gc, int devid);
+_hidden int libxl__pci_numdevs(libxl__gc *gc);
+_hidden int libxl__pci_topology_init(libxl__gc *gc,
+ physdev_pci_device_t *devs,
+ int num_devs);
+
/* from libxl_pci */
_hidden int libxl__device_pci_add(libxl__gc *gc, uint32_t domid, libxl_device_pci *pcidev, int starting);
{
return LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN;
}
+
+int libxl__pci_numdevs(libxl__gc *gc)
+{
+ DIR *dir;
+ struct dirent *entry;
+ int num_devs = 0;
+
+ dir = opendir("/sys/bus/pci/devices");
+ if (!dir) {
+ LOGE(ERROR, "Cannot open /sys/bus/pci/devices");
+ return ERROR_FAIL;
+ }
+
+ while ((entry = readdir(dir))) {
+ if (entry->d_name[0] == '.')
+ continue;
+ num_devs++;
+ }
+ closedir(dir);
+
+ return num_devs;
+}
+
+int libxl__pci_topology_init(libxl__gc *gc,
+ physdev_pci_device_t *devs,
+ int num_devs)
+{
+
+ DIR *dir;
+ struct dirent *entry;
+ int i, err = 0;
+
+ dir = opendir("/sys/bus/pci/devices");
+ if (!dir) {
+ LOGE(ERROR, "Cannot open /sys/bus/pci/devices");
+ return ERROR_FAIL;
+ }
+
+ i = 0;
+ while ((entry = readdir(dir))) {
+ unsigned int dom, bus, dev, func;
+
+ if (entry->d_name[0] == '.')
+ continue;
+
+ if (i == num_devs) {
+ LOG(ERROR, "Too many devices");
+ err = ERROR_FAIL;
+ errno = -ENOSPC;
+ goto out;
+ }
+
+ if (sscanf(entry->d_name, "%x:%x:%x.%d", &dom, &bus, &dev, &func) < 4) {
+ LOGE(ERROR, "Error processing /sys/bus/pci/devices");
+ err = ERROR_FAIL;
+ goto out;
+ }
+
+ devs[i].seg = dom;
+ devs[i].bus = bus;
+ devs[i].devfn = ((dev & 0x1f) << 3) | (func & 7);
+
+ i++;
+ }
+
+ out:
+ closedir(dir);
+
+ return err;
+}
{
return LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL;
}
+
+int libxl__pci_numdevs(libxl__gc *gc)
+{
+ return ERROR_NI;
+}
+
+int libxl__pci_topology_init(libxl__gc *gc,
+ physdev_pci_device_t *devs,
+ int num_devs)
+{
+ return ERROR_NI;
+}
("node", uint32),
], dir=DIR_OUT)
+libxl_pcitopology = Struct("pcitopology", [
+ ("seg", uint16),
+ ("bus", uint8),
+ ("devfn", uint8),
+ ("node", uint32),
+ ], dir=DIR_OUT)
+
libxl_sched_credit_params = Struct("sched_credit_params", [
("tslice_ms", integer),
("ratelimit_us", integer),
free(list);
}
+void libxl_pcitopology_list_free(libxl_pcitopology *list, int nr)
+{
+ int i;
+ for (i = 0; i < nr; i++)
+ libxl_pcitopology_dispose(&list[i]);
+ free(list);
+}
+
void libxl_numainfo_list_free(libxl_numainfo *list, int nr)
{
int i;
static void output_topologyinfo(void)
{
- libxl_cputopology *info;
+ libxl_cputopology *cpuinfo;
int i, nr;
+ libxl_pcitopology *pciinfo;
+ int valid_devs;
- info = libxl_get_cpu_topology(ctx, &nr);
- if (info == NULL) {
- fprintf(stderr, "libxl_get_topologyinfo failed.\n");
+
+ cpuinfo = libxl_get_cpu_topology(ctx, &nr);
+ if (cpuinfo == NULL) {
+ fprintf(stderr, "libxl_get_cpu_topology failed.\n");
return;
}
printf("cpu: core socket node\n");
for (i = 0; i < nr; i++) {
- if (info[i].core != LIBXL_CPUTOPOLOGY_INVALID_ENTRY)
+ if (cpuinfo[i].core != LIBXL_CPUTOPOLOGY_INVALID_ENTRY)
printf("%3d: %4d %4d %4d\n", i,
- info[i].core, info[i].socket, info[i].node);
+ cpuinfo[i].core, cpuinfo[i].socket, cpuinfo[i].node);
+ }
+
+ libxl_cputopology_list_free(cpuinfo, nr);
+
+ pciinfo = libxl_get_pci_topology(ctx, &nr);
+ if (pciinfo == NULL) {
+ fprintf(stderr, "libxl_get_pci_topology failed.\n");
+ return;
}
- libxl_cputopology_list_free(info, nr);
+ printf("device topology :\n");
+ printf("device node\n");
+ for (i = 0; i < nr; i++) {
+ if (pciinfo[i].node != LIBXL_PCITOPOLOGY_INVALID_ENTRY) {
+ printf("%04x:%02x:%02x.%01x %d\n", pciinfo[i].seg,
+ pciinfo[i].bus,
+ ((pciinfo[i].devfn >> 3) & 0x1f), (pciinfo[i].devfn & 7),
+ pciinfo[i].node);
+ valid_devs++;
+ }
+ }
+
+ if (valid_devs == 0)
+ printf("No device topology data available\n");
+
+ libxl_pcitopology_list_free(pciinfo, nr);
return;
}
projects / xen.git / commitdiff