[igt-dev] [PATCH i-g-t 1/2] lib/xe/xe_spin: Integrate igt_spin_new with Xe.
sai.gowtham.ch at intel.com
sai.gowtham.ch at intel.com
Tue May 30 10:08:04 UTC 2023
From: Sai Gowtham Ch <sai.gowtham.ch at intel.com>
Extending the spin_create implementation and allocator handle support in xe,
where it submits dummy work loads to engine. This Implementation is wrapped
around vm_bind and unbind as we are supposed to do it manually for xe.
Cc: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
Signed-off-by: Sai Gowtham Ch <sai.gowtham.ch at intel.com>
---
lib/igt_dummyload.c | 24 +++++++++---
lib/igt_dummyload.h | 10 +++++
lib/xe/xe_spin.c | 91 +++++++++++++++++++++++++++++++++++++++++++++
lib/xe/xe_spin.h | 7 ++++
4 files changed, 126 insertions(+), 6 deletions(-)
diff --git a/lib/igt_dummyload.c b/lib/igt_dummyload.c
index 740a58f3..6e89b72d 100644
--- a/lib/igt_dummyload.c
+++ b/lib/igt_dummyload.c
@@ -46,6 +46,7 @@
#include "intel_reg.h"
#include "ioctl_wrappers.h"
#include "sw_sync.h"
+#include "xe/xe_spin.h"
/**
* SECTION:igt_dummyload
@@ -447,7 +448,10 @@ spin_create(int fd, const struct igt_spin_factory *opts)
igt_spin_t *
__igt_spin_factory(int fd, const struct igt_spin_factory *opts)
{
- return spin_create(fd, opts);
+ if (is_xe_device(fd))
+ return xe_spin_create(fd, opts);
+ else
+ return spin_create(fd, opts);
}
/**
@@ -467,6 +471,11 @@ igt_spin_factory(int fd, const struct igt_spin_factory *opts)
{
igt_spin_t *spin;
+ if (is_xe_device(fd)) {
+ spin = xe_spin_create(fd, opts);
+ return spin;
+ }
+
if ((opts->flags & IGT_SPIN_POLL_RUN) && opts->engine != ALL_ENGINES) {
unsigned int class;
@@ -647,11 +656,14 @@ void igt_spin_free(int fd, igt_spin_t *spin)
if (!spin)
return;
- pthread_mutex_lock(&list_lock);
- igt_list_del(&spin->link);
- pthread_mutex_unlock(&list_lock);
-
- __igt_spin_free(fd, spin);
+ if (is_xe_device(fd)) {
+ xe_spin_free(fd, spin);
+ } else {
+ pthread_mutex_lock(&list_lock);
+ igt_list_del(&spin->link);
+ pthread_mutex_unlock(&list_lock);
+ __igt_spin_free(fd, spin);
+ }
}
void igt_terminate_spins(void)
diff --git a/lib/igt_dummyload.h b/lib/igt_dummyload.h
index b247ab02..7bcc7b56 100644
--- a/lib/igt_dummyload.h
+++ b/lib/igt_dummyload.h
@@ -54,6 +54,8 @@ typedef struct igt_spin_factory {
unsigned int flags;
int fence;
uint64_t ahnd;
+ struct drm_xe_engine_class_instance *hwe;
+ uint32_t vm;
} igt_spin_factory_t;
typedef struct igt_spin {
@@ -83,6 +85,14 @@ typedef struct igt_spin {
#define SPIN_CLFLUSH (1 << 0)
struct igt_spin_factory opts;
+
+ struct xe_spin *xe_spin;
+ size_t bo_size;
+ uint64_t address;
+ unsigned int engine;
+ uint32_t vm;
+ uint32_t syncobj;
+
} igt_spin_t;
diff --git a/lib/xe/xe_spin.c b/lib/xe/xe_spin.c
index 856d0ba2..bc0fbcc6 100644
--- a/lib/xe/xe_spin.c
+++ b/lib/xe/xe_spin.c
@@ -15,6 +15,7 @@
#include "intel_reg.h"
#include "xe_ioctl.h"
#include "xe_spin.h"
+#include "lib/igt_dummyload.h"
/**
* xe_spin_init:
@@ -82,6 +83,96 @@ void xe_spin_end(struct xe_spin *spin)
spin->end = 0;
}
+igt_spin_t *
+xe_spin_create(int fd, const struct igt_spin_factory *opt)
+{
+ size_t bo_size = xe_get_default_alignment(fd);
+ uint32_t bo;
+ uint64_t ahnd = opt->ahnd, addr;
+ struct igt_spin *spin;
+ struct xe_spin *xe_spin;
+ struct drm_xe_sync sync = {
+ .flags = DRM_XE_SYNC_SYNCOBJ | DRM_XE_SYNC_SIGNAL,
+ };
+ struct drm_xe_exec exec = {
+ .num_batch_buffer = 1,
+ .num_syncs = 1,
+ .syncs = to_user_pointer(&sync),
+ };
+
+ igt_assert(ahnd);
+ spin = calloc(1, sizeof(struct igt_spin));
+ igt_assert(spin);
+
+ spin->syncobj = syncobj_create(fd, 0);
+ if (opt->engine) {
+ spin->opts.engine = opt->engine;
+ spin->opts.vm = opt->vm;
+
+ spin->handle = xe_bo_create(fd, 0, spin->opts.vm, bo_size);
+ xe_spin = xe_bo_map(fd, spin->handle, bo_size);
+ addr = intel_allocator_alloc_with_strategy(ahnd, spin->handle, bo_size, 0, ALLOC_STRATEGY_LOW_TO_HIGH);
+ xe_vm_bind_sync(fd, spin->opts.vm, spin->handle, 0, addr, bo_size);
+
+ xe_spin_init(xe_spin, addr, true);
+ exec.engine_id = spin->opts.engine;
+ exec.address = addr;
+ } else {
+ spin->vm = xe_vm_create(fd, 0, 0);
+ if (!opt->hwe)
+ spin->engine = xe_engine_create_class(fd, spin->vm, DRM_XE_ENGINE_CLASS_RENDER);
+ else
+ spin->engine = xe_engine_create(fd, spin->vm, opt->hwe, 0);
+
+ bo = xe_bo_create(fd, 0, spin->vm, bo_size);
+ spin->handle = bo;
+ xe_spin = xe_bo_map(fd, spin->handle, bo_size);
+ addr = intel_allocator_alloc_with_strategy(ahnd, spin->handle, bo_size, 0, ALLOC_STRATEGY_LOW_TO_HIGH);
+ xe_vm_bind_sync(fd, spin->vm, spin->handle, 0, addr, bo_size);
+
+ xe_spin_init(xe_spin, addr, true);
+ exec.engine_id = spin->engine;
+ exec.address = addr;
+ }
+ sync.handle = spin->syncobj;
+ igt_assert_eq(igt_ioctl(fd, DRM_IOCTL_XE_EXEC, &exec), 0);
+ xe_spin_wait_started(xe_spin);
+ igt_info("Spinner started\n");
+
+ spin->bo_size = bo_size;
+ spin->address = addr;
+ spin->xe_spin = xe_spin;
+
+ return spin;
+}
+
+void xe_spin_sync_wait(int fd, struct igt_spin *spin)
+{
+ igt_assert(syncobj_wait(fd, &spin->syncobj, 1, INT64_MAX, 0,
+ NULL));
+}
+
+void xe_spin_free(int fd, struct igt_spin *spin)
+{
+ xe_spin_end(spin->xe_spin);
+ xe_spin_sync_wait(fd, spin);
+
+ if (!spin->opts.vm)
+ xe_vm_unbind_sync(fd, spin->vm, 0, spin->address, spin->bo_size);
+ else
+ xe_vm_unbind_sync(fd, spin->opts.vm, 0, spin->address, spin->bo_size);
+
+ syncobj_destroy(fd, spin->syncobj);
+ gem_munmap(spin->xe_spin, spin->bo_size);
+ gem_close(fd, spin->handle);
+
+ if (!spin->opts.engine) {
+ xe_engine_destroy(fd, spin->engine);
+ xe_vm_destroy(fd, spin->vm);
+ }
+ free(spin);
+}
+
void xe_cork_init(int fd, struct drm_xe_engine_class_instance *hwe,
struct xe_cork *cork)
{
diff --git a/lib/xe/xe_spin.h b/lib/xe/xe_spin.h
index 73f9a026..48867eb8 100644
--- a/lib/xe/xe_spin.h
+++ b/lib/xe/xe_spin.h
@@ -13,19 +13,26 @@
#include <stdbool.h>
#include "xe_query.h"
+#include "lib/igt_dummyload.h"
/* Mapped GPU object */
+
struct xe_spin {
uint32_t batch[16];
uint64_t pad;
uint32_t start;
uint32_t end;
+
};
+igt_spin_t *
+xe_spin_create(int fd, const struct igt_spin_factory *opt);
void xe_spin_init(struct xe_spin *spin, uint64_t addr, bool preempt);
bool xe_spin_started(struct xe_spin *spin);
+void xe_spin_sync_wait(int fd, struct igt_spin *spin);
void xe_spin_wait_started(struct xe_spin *spin);
void xe_spin_end(struct xe_spin *spin);
+void xe_spin_free(int fd, struct igt_spin *spin);
struct xe_cork {
struct xe_spin *spin;
--
2.39.1
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