diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c | 154 |
1 files changed, 116 insertions, 38 deletions
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c index 7fc46861a54d..130c4c522686 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c @@ -1492,6 +1492,10 @@ static int write_to_scratch(struct i915_gem_context *ctx, GEM_BUG_ON(offset < I915_GTT_PAGE_SIZE); + err = check_scratch(ctx_vm(ctx), offset); + if (err) + return err; + obj = i915_gem_object_create_internal(i915, PAGE_SIZE); if (IS_ERR(obj)) return PTR_ERR(obj); @@ -1528,10 +1532,6 @@ static int write_to_scratch(struct i915_gem_context *ctx, if (err) goto out_vm; - err = check_scratch(vm, offset); - if (err) - goto err_unpin; - rq = igt_request_alloc(ctx, engine); if (IS_ERR(rq)) { err = PTR_ERR(rq); @@ -1575,64 +1575,95 @@ static int read_from_scratch(struct i915_gem_context *ctx, struct drm_i915_private *i915 = ctx->i915; struct drm_i915_gem_object *obj; struct i915_address_space *vm; - const u32 RCS_GPR0 = 0x2600; /* not all engines have their own GPR! */ const u32 result = 0x100; struct i915_request *rq; struct i915_vma *vma; + unsigned int flags; u32 *cmd; int err; GEM_BUG_ON(offset < I915_GTT_PAGE_SIZE); + err = check_scratch(ctx_vm(ctx), offset); + if (err) + return err; + obj = i915_gem_object_create_internal(i915, PAGE_SIZE); if (IS_ERR(obj)) return PTR_ERR(obj); - cmd = i915_gem_object_pin_map(obj, I915_MAP_WB); - if (IS_ERR(cmd)) { - err = PTR_ERR(cmd); - goto out; - } - - memset(cmd, POISON_INUSE, PAGE_SIZE); if (INTEL_GEN(i915) >= 8) { + const u32 GPR0 = engine->mmio_base + 0x600; + + vm = i915_gem_context_get_vm_rcu(ctx); + vma = i915_vma_instance(obj, vm, NULL); + if (IS_ERR(vma)) { + err = PTR_ERR(vma); + goto out_vm; + } + + err = i915_vma_pin(vma, 0, 0, PIN_USER | PIN_OFFSET_FIXED); + if (err) + goto out_vm; + + cmd = i915_gem_object_pin_map(obj, I915_MAP_WB); + if (IS_ERR(cmd)) { + err = PTR_ERR(cmd); + goto out; + } + + memset(cmd, POISON_INUSE, PAGE_SIZE); *cmd++ = MI_LOAD_REGISTER_MEM_GEN8; - *cmd++ = RCS_GPR0; + *cmd++ = GPR0; *cmd++ = lower_32_bits(offset); *cmd++ = upper_32_bits(offset); *cmd++ = MI_STORE_REGISTER_MEM_GEN8; - *cmd++ = RCS_GPR0; + *cmd++ = GPR0; *cmd++ = result; *cmd++ = 0; + *cmd = MI_BATCH_BUFFER_END; + + i915_gem_object_flush_map(obj); + i915_gem_object_unpin_map(obj); + + flags = 0; } else { + const u32 reg = engine->mmio_base + 0x420; + + /* hsw: register access even to 3DPRIM! is protected */ + vm = i915_vm_get(&engine->gt->ggtt->vm); + vma = i915_vma_instance(obj, vm, NULL); + if (IS_ERR(vma)) { + err = PTR_ERR(vma); + goto out_vm; + } + + err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL); + if (err) + goto out_vm; + + cmd = i915_gem_object_pin_map(obj, I915_MAP_WB); + if (IS_ERR(cmd)) { + err = PTR_ERR(cmd); + goto out; + } + + memset(cmd, POISON_INUSE, PAGE_SIZE); *cmd++ = MI_LOAD_REGISTER_MEM; - *cmd++ = RCS_GPR0; + *cmd++ = reg; *cmd++ = offset; - *cmd++ = MI_STORE_REGISTER_MEM; - *cmd++ = RCS_GPR0; - *cmd++ = result; - } - *cmd = MI_BATCH_BUFFER_END; - - i915_gem_object_flush_map(obj); - i915_gem_object_unpin_map(obj); + *cmd++ = MI_STORE_REGISTER_MEM | MI_USE_GGTT; + *cmd++ = reg; + *cmd++ = vma->node.start + result; + *cmd = MI_BATCH_BUFFER_END; - intel_gt_chipset_flush(engine->gt); + i915_gem_object_flush_map(obj); + i915_gem_object_unpin_map(obj); - vm = i915_gem_context_get_vm_rcu(ctx); - vma = i915_vma_instance(obj, vm, NULL); - if (IS_ERR(vma)) { - err = PTR_ERR(vma); - goto out_vm; + flags = I915_DISPATCH_SECURE; } - err = i915_vma_pin(vma, 0, 0, PIN_USER | PIN_OFFSET_FIXED); - if (err) - goto out_vm; - - err = check_scratch(vm, offset); - if (err) - goto err_unpin; + intel_gt_chipset_flush(engine->gt); rq = igt_request_alloc(ctx, engine); if (IS_ERR(rq)) { @@ -1640,7 +1671,7 @@ static int read_from_scratch(struct i915_gem_context *ctx, goto err_unpin; } - err = engine->emit_bb_start(rq, vma->node.start, vma->node.size, 0); + err = engine->emit_bb_start(rq, vma->node.start, vma->node.size, flags); if (err) goto err_request; @@ -1686,6 +1717,39 @@ out: return err; } +static int check_scratch_page(struct i915_gem_context *ctx, u32 *out) +{ + struct i915_address_space *vm; + struct page *page; + u32 *vaddr; + int err = 0; + + vm = ctx_vm(ctx); + if (!vm) + return -ENODEV; + + page = vm->scratch[0].base.page; + if (!page) { + pr_err("No scratch page!\n"); + return -EINVAL; + } + + vaddr = kmap(page); + if (!vaddr) { + pr_err("No (mappable) scratch page!\n"); + return -EINVAL; + } + + memcpy(out, vaddr, sizeof(*out)); + if (memchr_inv(vaddr, *out, PAGE_SIZE)) { + pr_err("Inconsistent initial state of scratch page!\n"); + err = -EINVAL; + } + kunmap(page); + + return err; +} + static int igt_vm_isolation(void *arg) { struct drm_i915_private *i915 = arg; @@ -1696,6 +1760,7 @@ static int igt_vm_isolation(void *arg) I915_RND_STATE(prng); struct file *file; u64 vm_total; + u32 expected; int err; if (INTEL_GEN(i915) < 7) @@ -1730,6 +1795,15 @@ static int igt_vm_isolation(void *arg) if (ctx_vm(ctx_a) == ctx_vm(ctx_b)) goto out_file; + /* Read the initial state of the scratch page */ + err = check_scratch_page(ctx_a, &expected); + if (err) + goto out_file; + + err = check_scratch_page(ctx_b, &expected); + if (err) + goto out_file; + vm_total = ctx_vm(ctx_a)->total; GEM_BUG_ON(ctx_vm(ctx_b)->total != vm_total); vm_total -= I915_GTT_PAGE_SIZE; @@ -1743,6 +1817,10 @@ static int igt_vm_isolation(void *arg) if (!intel_engine_can_store_dword(engine)) continue; + /* Not all engines have their own GPR! */ + if (INTEL_GEN(i915) < 8 && engine->class != RENDER_CLASS) + continue; + while (!__igt_timeout(end_time, NULL)) { u32 value = 0xc5c5c5c5; u64 offset; @@ -1760,7 +1838,7 @@ static int igt_vm_isolation(void *arg) if (err) goto out_file; - if (value) { + if (value != expected) { pr_err("%s: Read %08x from scratch (offset 0x%08x_%08x), after %lu reads!\n", engine->name, value, upper_32_bits(offset), |