tests: Add a test for the command parser

Start with a simple testcase that should pass.

v2: Switch to I915_PARAM_CMD_PARSER_VERSION

Signed-off-by: Brad Volkin <bradley.d.volkin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

tests/.gitignore

@@ -35,6 +35,7 @@ gem_exec_blt
 gem_exec_faulting_reloc
 gem_exec_lut_handle
 gem_exec_nop
+gem_exec_parse
 gem_fd_exhaustion
 gem_fenced_exec_thrash
 gem_fence_thrash

tests/Makefile.sources

@@ -29,6 +29,7 @@ TESTS_progs_M = \
 	gem_exec_bad_domains \
 	gem_exec_faulting_reloc \
 	gem_exec_nop \
+	gem_exec_parse \
 	gem_fenced_exec_thrash \
 	gem_fence_thrash \
 	gem_flink \

tests/gem_exec_parse.c

@@ -0,0 +1,140 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+
+#ifndef I915_PARAM_CMD_PARSER_VERSION
+#define I915_PARAM_CMD_PARSER_VERSION       28
+#endif
+
+static int exec_batch_patched(int fd, uint32_t cmd_bo, uint32_t *cmds,
+			      int size, int patch_offset, uint64_t expected_value)
+{
+	struct drm_i915_gem_execbuffer2 execbuf;
+	struct drm_i915_gem_exec_object2 objs[2];
+	struct drm_i915_gem_relocation_entry reloc[1];
+
+	uint32_t target_bo = gem_create(fd, 4096);
+	uint64_t actual_value = 0;
+
+	gem_write(fd, cmd_bo, 0, cmds, size);
+
+	reloc[0].offset = patch_offset;
+	reloc[0].delta = 0;
+	reloc[0].target_handle = target_bo;
+	reloc[0].read_domains = I915_GEM_DOMAIN_RENDER;
+	reloc[0].write_domain = I915_GEM_DOMAIN_RENDER;
+	reloc[0].presumed_offset = 0;
+
+	objs[0].handle = target_bo;
+	objs[0].relocation_count = 0;
+	objs[0].relocs_ptr = 0;
+	objs[0].alignment = 0;
+	objs[0].offset = 0;
+	objs[0].flags = 0;
+	objs[0].rsvd1 = 0;
+	objs[0].rsvd2 = 0;
+
+	objs[1].handle = cmd_bo;
+	objs[1].relocation_count = 1;
+	objs[1].relocs_ptr = (uintptr_t)reloc;
+	objs[1].alignment = 0;
+	objs[1].offset = 0;
+	objs[1].flags = 0;
+	objs[1].rsvd1 = 0;
+	objs[1].rsvd2 = 0;
+
+	execbuf.buffers_ptr = (uintptr_t)objs;
+	execbuf.buffer_count = 2;
+	execbuf.batch_start_offset = 0;
+	execbuf.batch_len = size;
+	execbuf.cliprects_ptr = 0;
+	execbuf.num_cliprects = 0;
+	execbuf.DR1 = 0;
+	execbuf.DR4 = 0;
+	execbuf.flags = I915_EXEC_RENDER;
+	i915_execbuffer2_set_context_id(execbuf, 0);
+	execbuf.rsvd2 = 0;
+
+	gem_execbuf(fd, &execbuf);
+	gem_sync(fd, cmd_bo);
+
+	gem_read(fd,target_bo, 0, &actual_value, sizeof(actual_value));
+	igt_assert(expected_value == actual_value);
+
+	gem_close(fd, target_bo);
+
+	return 1;
+}
+
+uint32_t handle;
+int fd;
+
+#define GFX_OP_PIPE_CONTROL	((0x3<<29)|(0x3<<27)|(0x2<<24)|2)
+#define   PIPE_CONTROL_QW_WRITE	(1<<14)
+
+igt_main
+{
+	igt_fixture {
+		int parser_version = 0;
+                drm_i915_getparam_t gp;
+		int rc;
+
+		fd = drm_open_any();
+
+		gp.param = I915_PARAM_CMD_PARSER_VERSION;
+		gp.value = &parser_version;
+		rc = drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp);
+		igt_require(!rc && parser_version > 0);
+
+		handle = gem_create(fd, 4096);
+	}
+
+	igt_subtest("basic-allowed") {
+		uint32_t pc[] = {
+			GFX_OP_PIPE_CONTROL,
+			PIPE_CONTROL_QW_WRITE,
+			0, // To be patched
+			0x12000000,
+			0,
+			MI_BATCH_BUFFER_END,
+		};
+		igt_assert(
+			exec_batch_patched(fd, handle,
+					   pc, sizeof(pc),
+					   8, // patch offset,
+					   0x12000000));
+	}
+
+	igt_fixture {
+		gem_close(fd, handle);
+
+		close(fd);
+	}
+}