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413 lines
9.9 KiB
413 lines
9.9 KiB
/*
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* Copyright © 2019 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "igt.h"
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#include "igt_dummyload.h"
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#include "i915/gem_vm.h"
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static int vm_create_ioctl(int i915, struct drm_i915_gem_vm_control *ctl)
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{
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int err = 0;
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if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_VM_CREATE, ctl)) {
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err = -errno;
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igt_assume(err);
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}
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errno = 0;
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return err;
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}
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static int vm_destroy_ioctl(int i915, struct drm_i915_gem_vm_control *ctl)
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{
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int err = 0;
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if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_VM_DESTROY, ctl)) {
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err = -errno;
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igt_assume(err);
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}
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errno = 0;
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return err;
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}
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static int ctx_create_ioctl(int i915,
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struct drm_i915_gem_context_create_ext *arg)
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{
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int err = 0;
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if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_CONTEXT_CREATE_EXT, arg)) {
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err = -errno;
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igt_assume(err);
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}
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errno = 0;
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return err;
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}
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static bool has_vm(int i915)
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{
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struct drm_i915_gem_vm_control ctl = {};
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int err;
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err = vm_create_ioctl(i915, &ctl);
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switch (err) {
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case -EINVAL: /* unknown ioctl */
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case -ENODEV: /* !full-ppgtt */
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return false;
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case 0:
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gem_vm_destroy(i915, ctl.vm_id);
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return true;
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default:
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igt_fail_on_f(err, "Unknown response from VM_CREATE\n");
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return false;
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}
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}
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static void invalid_create(int i915)
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{
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struct drm_i915_gem_vm_control ctl = {};
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struct i915_user_extension ext = { .name = -1 };
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igt_assert_eq(vm_create_ioctl(i915, &ctl), 0);
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gem_vm_destroy(i915, ctl.vm_id);
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ctl.vm_id = 0xdeadbeef;
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igt_assert_eq(vm_create_ioctl(i915, &ctl), 0);
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gem_vm_destroy(i915, ctl.vm_id);
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ctl.vm_id = 0;
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ctl.flags = -1;
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igt_assert_eq(vm_create_ioctl(i915, &ctl), -EINVAL);
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ctl.flags = 0;
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ctl.extensions = -1;
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igt_assert_eq(vm_create_ioctl(i915, &ctl), -EFAULT);
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ctl.extensions = to_user_pointer(&ext);
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igt_assert_eq(vm_create_ioctl(i915, &ctl), -EINVAL);
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ctl.extensions = 0;
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}
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static void invalid_destroy(int i915)
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{
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struct drm_i915_gem_vm_control ctl = {};
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), -ENOENT);
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igt_assert_eq(vm_create_ioctl(i915, &ctl), 0);
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), 0);
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), -ENOENT);
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igt_assert_eq(vm_create_ioctl(i915, &ctl), 0);
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ctl.vm_id = ctl.vm_id + 1; /* assumes no one else allocated */
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), -ENOENT);
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ctl.vm_id = ctl.vm_id - 1;
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), 0);
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igt_assert_eq(vm_create_ioctl(i915, &ctl), 0);
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ctl.flags = -1;
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), -EINVAL);
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ctl.flags = 0;
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), 0);
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igt_assert_eq(vm_create_ioctl(i915, &ctl), 0);
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ctl.extensions = -1;
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), -EINVAL);
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ctl.extensions = 0;
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igt_assert_eq(vm_destroy_ioctl(i915, &ctl), 0);
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}
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static uint32_t __batch_create(int i915, uint32_t offset)
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{
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const uint32_t bbe = MI_BATCH_BUFFER_END;
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uint32_t handle;
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handle = gem_create(i915, ALIGN(offset + 4, 4096));
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gem_write(i915, handle, offset, &bbe, sizeof(bbe));
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return handle;
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}
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static uint32_t batch_create(int i915)
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{
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return __batch_create(i915, 0);
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}
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static void check_same_vm(int i915, uint32_t ctx_a, uint32_t ctx_b)
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{
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struct drm_i915_gem_exec_object2 batch = {
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.handle = batch_create(i915),
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};
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struct drm_i915_gem_execbuffer2 eb = {
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.buffers_ptr = to_user_pointer(&batch),
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.buffer_count = 1,
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};
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/* First verify that we try to use "softpinning" by default */
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batch.offset = 48 << 20;
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eb.rsvd1 = ctx_a;
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gem_execbuf(i915, &eb);
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igt_assert_eq_u64(batch.offset, 48 << 20);
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/* An already active VMA will try to keep its offset */
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batch.offset = 0;
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eb.rsvd1 = ctx_b;
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gem_execbuf(i915, &eb);
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igt_assert_eq_u64(batch.offset, 48 << 20);
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gem_sync(i915, batch.handle);
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gem_close(i915, batch.handle);
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}
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static void create_ext(int i915)
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{
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struct drm_i915_gem_context_create_ext_setparam ext = {
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{ .name = I915_CONTEXT_CREATE_EXT_SETPARAM },
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{ .param = I915_CONTEXT_PARAM_VM }
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};
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struct drm_i915_gem_context_create_ext create = {
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.flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS
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};
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uint32_t ctx[2];
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igt_require(ctx_create_ioctl(i915, &create) == 0);
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gem_context_destroy(i915, create.ctx_id);
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create.extensions = to_user_pointer(&ext);
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ext.param.value = gem_vm_create(i915);
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igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
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ctx[0] = create.ctx_id;
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igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
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ctx[1] = create.ctx_id;
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gem_vm_destroy(i915, ext.param.value);
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check_same_vm(i915, ctx[0], ctx[1]);
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gem_context_destroy(i915, ctx[1]);
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gem_context_destroy(i915, ctx[0]);
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}
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static void execbuf(int i915)
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{
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struct drm_i915_gem_exec_object2 batch = {
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.handle = batch_create(i915),
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};
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struct drm_i915_gem_execbuffer2 eb = {
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.buffers_ptr = to_user_pointer(&batch),
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.buffer_count = 1,
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};
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struct drm_i915_gem_context_param arg = {
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.param = I915_CONTEXT_PARAM_VM,
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};
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/* First verify that we try to use "softpinning" by default */
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batch.offset = 48 << 20;
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gem_execbuf(i915, &eb);
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igt_assert_eq_u64(batch.offset, 48 << 20);
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arg.value = gem_vm_create(i915);
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gem_context_set_param(i915, &arg);
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gem_execbuf(i915, &eb);
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igt_assert_eq_u64(batch.offset, 48 << 20);
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gem_vm_destroy(i915, arg.value);
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arg.value = gem_vm_create(i915);
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gem_context_set_param(i915, &arg);
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batch.offset = 0;
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gem_execbuf(i915, &eb);
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igt_assert_eq_u64(batch.offset, 0);
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gem_vm_destroy(i915, arg.value);
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gem_sync(i915, batch.handle);
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gem_close(i915, batch.handle);
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}
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static void
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write_to_address(int fd, uint32_t ctx, uint64_t addr, uint32_t value)
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{
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const int gen = intel_gen(intel_get_drm_devid(fd));
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struct drm_i915_gem_exec_object2 batch = {
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.handle = gem_create(fd, 4096)
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};
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struct drm_i915_gem_execbuffer2 eb = {
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.buffers_ptr = to_user_pointer(&batch),
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.buffer_count = 1,
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.rsvd1 = ctx,
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};
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uint32_t cs[16];
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int i;
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i = 0;
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cs[i] = MI_STORE_DWORD_IMM | (gen < 6 ? 1 << 22 : 0);
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if (gen >= 8) {
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cs[++i] = addr;
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cs[++i] = addr >> 32;
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} else if (gen >= 4) {
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cs[++i] = 0;
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cs[++i] = addr;
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} else {
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cs[i]--;
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cs[++i] = addr;
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}
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cs[++i] = value;
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cs[++i] = MI_BATCH_BUFFER_END;
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gem_write(fd, batch.handle, 0, cs, sizeof(cs));
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gem_execbuf(fd, &eb);
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igt_assert(batch.offset != addr);
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gem_sync(fd, batch.handle);
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gem_close(fd, batch.handle);
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}
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static void isolation(int i915)
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{
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struct drm_i915_gem_exec_object2 obj[2] = {
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{
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.handle = gem_create(i915, 4096),
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.offset = 1 << 20
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},
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{ .handle = batch_create(i915), }
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};
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struct drm_i915_gem_execbuffer2 eb = {
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.buffers_ptr = to_user_pointer(obj),
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.buffer_count = 2,
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};
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struct drm_i915_gem_context_param arg = {
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.param = I915_CONTEXT_PARAM_VM,
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};
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int other = gem_reopen_driver(i915);
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uint32_t ctx[2], vm[2], result;
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int loops = 4096;
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/* An vm_id on one fd is not the same on another fd */
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igt_assert_neq(i915, other);
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ctx[0] = gem_context_create(i915);
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ctx[1] = gem_context_create(other);
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vm[0] = gem_vm_create(i915);
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do {
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vm[1] = gem_vm_create(other);
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} while (vm[1] != vm[0] && loops-- > 0);
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igt_assert(loops);
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arg.ctx_id = ctx[0];
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arg.value = vm[0];
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gem_context_set_param(i915, &arg);
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arg.ctx_id = ctx[1];
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arg.value = vm[1];
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gem_context_set_param(other, &arg);
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eb.rsvd1 = ctx[0];
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gem_execbuf(i915, &eb); /* bind object into vm[0] */
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/* Verify the trick with the assumed target address works */
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write_to_address(i915, ctx[0], obj[0].offset, 1);
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gem_read(i915, obj[0].handle, 0, &result, sizeof(result));
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igt_assert_eq(result, 1);
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/* Now check that we can't write to vm[0] from second fd/vm */
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write_to_address(other, ctx[1], obj[0].offset, 2);
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gem_read(i915, obj[0].handle, 0, &result, sizeof(result));
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igt_assert_eq(result, 1);
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close(other);
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gem_close(i915, obj[1].handle);
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gem_close(i915, obj[0].handle);
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gem_context_destroy(i915, ctx[0]);
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gem_vm_destroy(i915, vm[0]);
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}
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static void async_destroy(int i915)
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{
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struct drm_i915_gem_context_param arg = {
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.ctx_id = gem_context_create(i915),
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.value = gem_vm_create(i915),
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.param = I915_CONTEXT_PARAM_VM,
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};
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igt_spin_t *spin[2];
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spin[0] = igt_spin_new(i915,
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.ctx = arg.ctx_id,
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.flags = IGT_SPIN_POLL_RUN);
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igt_spin_busywait_until_started(spin[0]);
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gem_context_set_param(i915, &arg);
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spin[1] = __igt_spin_new(i915, .ctx = arg.ctx_id);
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igt_spin_end(spin[0]);
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gem_sync(i915, spin[0]->handle);
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gem_vm_destroy(i915, arg.value);
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gem_context_destroy(i915, arg.ctx_id);
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igt_spin_end(spin[1]);
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gem_sync(i915, spin[1]->handle);
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for (int i = 0; i < ARRAY_SIZE(spin); i++)
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igt_spin_free(i915, spin[i]);
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}
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igt_main
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{
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int i915 = -1;
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igt_fixture {
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i915 = drm_open_driver(DRIVER_INTEL);
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igt_require_gem(i915);
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igt_require(has_vm(i915));
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}
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igt_subtest("invalid-create")
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invalid_create(i915);
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igt_subtest("invalid-destroy")
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invalid_destroy(i915);
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igt_subtest_group {
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igt_fixture {
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gem_context_require_param(i915, I915_CONTEXT_PARAM_VM);
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}
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igt_subtest("execbuf")
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execbuf(i915);
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igt_subtest("isolation")
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isolation(i915);
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igt_subtest("create-ext")
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create_ext(i915);
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igt_subtest("async-destroy")
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async_destroy(i915);
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}
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igt_fixture {
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close(i915);
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}
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}
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