[i-g-t v2 13/27] tests/i915/vm_bind: Add gem_lmem_swapping at vm_bind sub test
Bhanuprakash Modem
bhanuprakash.modem at intel.com
Tue Jan 24 07:34:57 UTC 2023
From: Niranjana Vishwanathapura <niranjana.vishwanathapura at intel.com>
Validate eviction of objects with persistent mappings and
check persistent mappings are properly rebound upon subsequent
execbuf3 call.
TODO: Add a new swapping test with just vm_bind mode
(without legacy execbuf).
v2: use i915_vm_bind library functions
v3: fix dg2 alignment issue
v4: Use syncobj library functions
Reviewed-by: Matthew Auld <matthew.auld at intel.com>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura at intel.com>
---
tests/i915/gem_lmem_swapping.c | 125 ++++++++++++++++++++++++++++++++-
1 file changed, 124 insertions(+), 1 deletion(-)
diff --git a/tests/i915/gem_lmem_swapping.c b/tests/i915/gem_lmem_swapping.c
index 55b044ec..a078b5ee 100644
--- a/tests/i915/gem_lmem_swapping.c
+++ b/tests/i915/gem_lmem_swapping.c
@@ -7,8 +7,10 @@
#include "i915/gem_create.h"
#include "i915/gem_vm.h"
#include "i915/intel_memory_region.h"
+#include "i915/i915_vm_bind.h"
#include "igt.h"
#include "igt_kmod.h"
+#include "igt_syncobj.h"
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
@@ -54,6 +56,7 @@ struct params {
uint64_t max;
} size;
unsigned int count;
+ unsigned int vm_bind_count;
unsigned int loops;
unsigned int mem_limit;
#define TEST_VERIFY (1 << 0)
@@ -64,15 +67,18 @@ struct params {
#define TEST_MULTI (1 << 5)
#define TEST_CCS (1 << 6)
#define TEST_MASSIVE (1 << 7)
+#define TEST_VM_BIND (1 << 8)
unsigned int flags;
unsigned int seed;
bool oom_test;
+ uint64_t va;
};
struct object {
uint64_t size;
uint32_t seed;
uint32_t handle;
+ uint64_t va;
struct blt_copy_object *blt_obj;
};
@@ -231,6 +237,79 @@ verify_object_ccs(int i915, const struct object *obj,
free(cmd);
}
+#define BATCH_VA 0xa00000
+
+static void vm_bind(int i915, struct object *list, unsigned int num, uint64_t *va,
+ uint32_t batch, uint64_t batch_size, uint32_t vm_id)
+{
+ uint32_t *bind_syncobj;
+ uint64_t *fence_value;
+ unsigned int i;
+
+ bind_syncobj = calloc(num + 1, sizeof(*bind_syncobj));
+ igt_assert(bind_syncobj);
+
+ fence_value = calloc(num + 1, sizeof(*fence_value));
+ igt_assert(fence_value);
+
+ for (i = 0; i < num; i++) {
+ list[i].va = *va;
+ bind_syncobj[i] = syncobj_create(i915, 0);
+ i915_vm_bind(i915, vm_id, *va, list[i].handle, 0, list[i].size, 0, bind_syncobj[i], 0);
+ *va += list[i].size;
+ }
+ bind_syncobj[i] = syncobj_create(i915, 0);
+ i915_vm_bind(i915, vm_id, BATCH_VA, batch, 0, batch_size, 0, bind_syncobj[i], 0);
+
+ igt_assert(syncobj_timeline_wait(i915, bind_syncobj, fence_value, num + 1,
+ gettime_ns() + (2 * NSEC_PER_SEC),
+ DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT, NULL));
+ for (i = 0; i <= num; i++)
+ syncobj_destroy(i915, bind_syncobj[i]);
+}
+
+static void vm_unbind(int i915, struct object *list, unsigned int num,
+ uint64_t batch_size, uint32_t vm_id)
+{
+ unsigned int i;
+
+ i915_vm_unbind(i915, vm_id, BATCH_VA, batch_size);
+ for (i = 0; i < num; i++)
+ i915_vm_unbind(i915, vm_id, list[i].va, list[i].size);
+}
+
+static void move_to_lmem_execbuf3(int i915,
+ const intel_ctx_t *ctx,
+ unsigned int engine,
+ bool do_oom_test)
+{
+ uint32_t exec_syncobj = syncobj_create(i915, 0);
+ struct drm_i915_gem_timeline_fence exec_fence = {
+ .handle = exec_syncobj,
+ .flags = I915_TIMELINE_FENCE_SIGNAL
+ };
+ struct drm_i915_gem_execbuffer3 eb = {
+ .ctx_id = ctx->id,
+ .batch_address = BATCH_VA,
+ .engine_idx = engine,
+ .fence_count = 1,
+ .timeline_fences = to_user_pointer(&exec_fence),
+ };
+ uint64_t fence_value = 0;
+ int ret;
+
+retry:
+ ret = __gem_execbuf3(i915, &eb);
+ if (do_oom_test && (ret == -ENOMEM || ret == -ENXIO))
+ goto retry;
+ igt_assert_eq(ret, 0);
+
+ igt_assert(syncobj_timeline_wait(i915, &exec_syncobj, &fence_value, 1,
+ gettime_ns() + (2 * NSEC_PER_SEC),
+ DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT, NULL));
+ syncobj_destroy(i915, exec_syncobj);
+}
+
static void move_to_lmem(int i915,
const intel_ctx_t *ctx,
struct object *list,
@@ -278,14 +357,16 @@ static void __do_evict(int i915,
uint32_t region_id = INTEL_MEMORY_REGION_ID(region->memory_class,
region->memory_instance);
const unsigned int max_swap_in = params->count / 100 + 1;
+ uint64_t size, ahnd, batch_size = SZ_64K;
struct object *objects, *obj, *list;
const uint32_t bpp = 32;
uint32_t width, height, stride;
+ const intel_ctx_t *vm_bind_ctx;
const intel_ctx_t *blt_ctx;
struct blt_copy_object *tmp;
unsigned int engine = 0;
+ uint32_t batch, vm_id;
unsigned int i, l;
- uint64_t size, ahnd;
struct timespec t = {};
unsigned int num;
@@ -369,6 +450,26 @@ static void __do_evict(int i915,
readable_size(params->size.max), readable_unit(params->size.max),
params->count, seed);
+ /* VM_BIND the specified subset of objects (as persistent mappings) */
+ if (params->flags & TEST_VM_BIND) {
+ const uint32_t bbe = MI_BATCH_BUFFER_END;
+ struct drm_i915_gem_context_param param = {
+ .param = I915_CONTEXT_PARAM_RECOVERABLE,
+ .value = 0,
+ };
+
+ batch = gem_create_from_pool(i915, &batch_size, region_id);
+ gem_write(i915, batch, 0, &bbe, sizeof(bbe));
+
+ vm_id = gem_vm_create_in_vm_bind_mode(i915);
+ vm_bind_ctx = intel_ctx_create(i915, &ctx->cfg);
+ param.ctx_id = vm_bind_ctx->id;
+ gem_context_set_param(i915, ¶m);
+ gem_context_set_vm(i915, vm_bind_ctx->id, vm_id);
+ vm_bind(i915, objects, params->vm_bind_count, ¶ms->va,
+ batch, batch_size, vm_id);
+ }
+
/*
* Move random objects back into lmem.
* For TEST_MULTI runs, make each object counts a loop to
@@ -407,6 +508,15 @@ static void __do_evict(int i915,
}
}
+ /* Rebind persistent mappings to ensure they are swapped back in */
+ if (params->flags & TEST_VM_BIND) {
+ move_to_lmem_execbuf3(i915, vm_bind_ctx, engine, params->oom_test);
+
+ vm_unbind(i915, objects, params->vm_bind_count, batch_size, vm_id);
+ intel_ctx_destroy(i915, vm_bind_ctx);
+ gem_vm_destroy(i915, vm_id);
+ }
+
for (i = 0; i < params->count; i++) {
gem_close(i915, objects[i].handle);
free(objects[i].blt_obj);
@@ -506,6 +616,15 @@ static void fill_params(int i915, struct params *params,
if (flags & TEST_HEAVY)
params->loops = params->loops / 2 + 1;
+ /*
+ * Set vm_bind_count and ensure it doesn't over-subscribe LMEM.
+ * Set va range to ensure it is big enough for all bindings in a VM.
+ */
+ if (flags & TEST_VM_BIND) {
+ params->vm_bind_count = params->count / 3;
+ params->va = (uint64_t)params->vm_bind_count * size * 4;
+ }
+
params->flags = flags;
params->oom_test = do_oom_test;
@@ -536,6 +655,9 @@ static void test_evict(int i915,
if (flags & TEST_CCS)
igt_require(HAS_FLATCCS(intel_get_drm_devid(i915)));
+ if (flags & TEST_VM_BIND)
+ igt_require(i915_vm_bind_version(i915) == 1);
+
fill_params(i915, ¶ms, region, flags, nproc, false);
if (flags & TEST_PARALLEL) {
@@ -717,6 +839,7 @@ igt_main_args("", long_options, help_str, opt_handler, NULL)
{ "heavy-verify-random-ccs", TEST_CCS | TEST_RANDOM | TEST_HEAVY },
{ "heavy-verify-multi-ccs", TEST_CCS | TEST_RANDOM | TEST_HEAVY | TEST_ENGINES | TEST_MULTI },
{ "parallel-random-verify-ccs", TEST_PARALLEL | TEST_RANDOM | TEST_CCS },
+ { "vm_bind", TEST_VM_BIND },
{ }
};
const intel_ctx_t *ctx;
--
2.39.0
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