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// SPDX-License-Identifier: MIT
/*
* Copyright © 2022 Intel Corporation
*/
/** @file i915_vm_bind_sanity.c
*
* This is the sanity test for VM_BIND UAPI.
*
* The goal is to test the UAPI interface.
*/
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include "igt_syncobj.h"
#include "i915/gem.h"
#include "i915/gem_create.h"
#include "igt.h"
#include "i915/gem_vm.h"
#define EOPNOTSUPP 95
#define PAGE_SIZE 4096
#define SZ_64K (16 * PAGE_SIZE)
#define VA 0xa0000000
static uint64_t
gettime_ns(void)
{
struct timespec current;
clock_gettime(CLOCK_MONOTONIC, ¤t);
return (uint64_t)current.tv_sec * NSEC_PER_SEC + current.tv_nsec;
}
static bool syncobj_busy(int fd, uint32_t handle)
{
bool result;
int sf;
sf = syncobj_handle_to_fd(fd, handle,
DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE);
result = poll(&(struct pollfd){sf, POLLIN}, 1, 0) == 0;
close(sf);
return result;
}
static inline int
__i915_vm_bind(int fd, uint32_t vm_id, uint32_t handle, uint64_t start,
uint64_t offset, uint64_t length, uint64_t flags,
struct drm_i915_gem_timeline_fence *fence)
{
struct drm_i915_gem_vm_bind bind;
memset(&bind, 0, sizeof(bind));
bind.vm_id = vm_id;
bind.handle = handle;
bind.start = start;
bind.offset = offset;
bind.length = length;
bind.flags = flags;
if (fence)
bind.fence = *fence;
return __gem_vm_bind(fd, &bind);
}
static inline void
i915_vm_bind(int fd, uint32_t vm_id, uint32_t handle, uint64_t start,
uint64_t offset, uint64_t length, uint64_t flags,
struct drm_i915_gem_timeline_fence *fence)
{
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, start,
offset, length, flags, fence), 0);
if (fence) {
igt_assert(syncobj_timeline_wait(fd, &fence->handle, (uint64_t *)&fence->value,
1, gettime_ns() + (2 * NSEC_PER_SEC),
DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT, NULL));
igt_assert(!syncobj_busy(fd, fence->handle));
}
}
static inline int
__i915_vm_unbind(int fd, uint32_t vm_id, uint64_t start, uint64_t length, uint64_t flags)
{
struct drm_i915_gem_vm_unbind unbind;
memset(&unbind, 0, sizeof(unbind));
unbind.vm_id = vm_id;
unbind.start = start;
unbind.length = length;
unbind.flags = flags;
return __gem_vm_unbind(fd, &unbind);
}
static inline void
i915_vm_unbind(int fd, uint32_t vm_id, uint64_t start, uint64_t length, uint64_t flags)
{
igt_assert_eq(__i915_vm_unbind(fd, vm_id, start, length, flags), 0);
}
static void basic(int fd, bool test_lmem)
{
uint32_t vm_id, vm_id2, vm_id_exec_mode, handle, pg_size, size;
unsigned int region = test_lmem ? REGION_LMEM(0) : REGION_SMEM;
struct drm_i915_gem_timeline_fence fence = {
.handle = syncobj_create(fd, 0),
.flags = I915_TIMELINE_FENCE_SIGNAL,
.value = 0,
};
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 obj;
const intel_ctx_t *ctx;
int dmabuf;
pg_size = (test_lmem && HAS_64K_PAGES(intel_get_drm_devid(fd))) ? SZ_64K : PAGE_SIZE;
size = pg_size * 4;
vm_id = gem_vm_create_in_vm_bind_mode(fd);
handle = gem_create_in_memory_regions(fd, size, region);
/* Bind and unbind */
i915_vm_bind(fd, vm_id, handle, VA, 0, size, 0, NULL);
i915_vm_unbind(fd, vm_id, VA, size, 0);
/* Bind with out fence */
i915_vm_bind(fd, vm_id, handle, VA, 0, size, 0, &fence);
i915_vm_unbind(fd, vm_id, VA, size, 0);
/* Aliasing bind and unbind */
i915_vm_bind(fd, vm_id, handle, VA, 0, size, 0, NULL);
i915_vm_bind(fd, vm_id, handle, VA + size, 0, size, 0, NULL);
i915_vm_unbind(fd, vm_id, VA, size, 0);
i915_vm_unbind(fd, vm_id, VA + size, size, 0);
/* Invalid handle */
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle + 10, VA, 0, size, 0, NULL), -ENOENT);
/* Invalid mapping range */
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, 0, 0, 0, NULL), -EINVAL);
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, pg_size, size, 0, NULL), -EINVAL);
/* Unaligned binds */
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, pg_size / 2, pg_size, 0, NULL), -EINVAL);
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, 0, pg_size / 2, 0, NULL), -EINVAL);
/* range overflow binds */
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, pg_size, -pg_size, 0, NULL), -EINVAL);
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, pg_size * 2, -pg_size, 0, NULL), -EINVAL);
/* re-bind VA range without unbinding */
i915_vm_bind(fd, vm_id, handle, VA, 0, size, 0, NULL);
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, 0, size, 0, NULL), -EEXIST);
i915_vm_unbind(fd, vm_id, VA, size, 0);
/* unbind a non-existing mapping */
igt_assert_eq(__i915_vm_bind(fd, vm_id, 0, VA + VA, 0, size, 0, NULL), -ENOENT);
/* unbind with length mismatch */
i915_vm_bind(fd, vm_id, handle, VA, 0, size, 0, NULL);
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, 0, size * 2, 0, NULL), -EINVAL);
i915_vm_unbind(fd, vm_id, VA, size, 0);
/* validate exclusivity of vm_bind & exec modes of binding */
vm_id_exec_mode = gem_vm_create(fd);
igt_assert_eq(__i915_vm_bind(fd, vm_id_exec_mode, handle, VA, 0, size, 0, NULL), -EOPNOTSUPP);
ctx = intel_ctx_create_all_physical(fd);
gem_context_set_vm(fd, ctx->id, vm_id);
(void)gem_context_get_vm(fd, ctx->id);
memset(&obj, 0, sizeof(obj));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(&obj);
execbuf.buffer_count = 1;
obj.handle = handle;
i915_execbuffer2_set_context_id(execbuf, ctx->id);
igt_assert_eq(__gem_execbuf(fd, &execbuf), -EOPNOTSUPP);
intel_ctx_destroy(fd, ctx);
gem_vm_destroy(fd, vm_id_exec_mode);
gem_close(fd, handle);
/* validate VM private objects */
vm_id2 = gem_vm_create_in_vm_bind_mode(fd);
handle = gem_create_vm_private_in_memory_regions(fd, size, vm_id2, region);
igt_assert_eq(prime_handle_to_fd_no_assert(fd, handle, DRM_CLOEXEC, &dmabuf), -EINVAL);
igt_assert_eq(__i915_vm_bind(fd, vm_id, handle, VA, 0, size, 0, NULL), -EINVAL);
i915_vm_bind(fd, vm_id2, handle, VA, 0, size, 0, NULL);
i915_vm_unbind(fd, vm_id2, VA, size, 0);
gem_close(fd, handle);
gem_vm_destroy(fd, vm_id2);
gem_vm_destroy(fd, vm_id);
syncobj_destroy(fd, fence.handle);
}
static int vm_bind_version(int fd)
{
struct drm_i915_getparam gp;
int value = 0;
memset(&gp, 0, sizeof(gp));
gp.param = I915_PARAM_VM_BIND_VERSION;
gp.value = &value;
ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp));
errno = 0;
return value;
}
igt_main
{
int fd;
bool has_lmem;
igt_fixture {
fd = drm_open_driver(DRIVER_INTEL);
igt_require_gem(fd);
igt_require(vm_bind_version(fd) == 1);
has_lmem = gem_has_lmem(fd);
}
igt_subtest_f("basic-smem") {
basic(fd, false);
if (has_lmem)
basic(fd, true);
}
if (has_lmem) {
igt_subtest_f("basic-lmem")
basic(fd, true);
}
igt_fixture {
close(fd);
}
igt_exit();
}
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