[igt-dev] [PATCH i-g-t v5] tests/i915/gem_huc_copy: Enable a HuC copy test

["Robert M. Fosha" <robert.m.fosha@intel.com>]

From: Sally Qi <feng.qi@intel.com>

This test case loads the HuC copy firmware to copy the content of
the source buffer to the destination buffer.

v2: (Tony Ye)
 * Restructured some functions and files.
 * Defined the copy buffer size as 4K explicitly as the HuC Copy kernel
   always copy 4K bytes from src buffer to dst buffer.

v3: (Feng Qi, Antonio Argenziano, Tony Ye)
 * Restructured some functions as igt requested, exclude libdrm function call.
 * Remove huc function wrappers
 * Random initialize source input buffer

v4: (Robert Fosha)
 * Fix autotools build failure.

v5: (Feng Qi, Tony Ye)
 * Released all bo buffer after huc copying.
 * Restructured huc_copy() function.

v6: (Feng Qi)
 * Fixed the function of huc enabling and status check
 * Added huc_copy to fast feedback testlist

v7: (Tony Ye, Feng Qi, Robert Fosha, Chris Wilson, Michal Wajdeczko)
 * Check error with HUC_STATUS ioctl instead of debugfs

Signed-off-by: Feng Qi <feng.qi@intel.com>
Signed-off-by: Tony Ye <tony.ye@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Antonio Argenziano <antonio.argenziano@intel.com>
---
 lib/Makefile.sources                  |   2 +
 lib/huc_copy.c                        | 107 +++++++++++++++++++++
 lib/huc_copy.h                        |  50 ++++++++++
 lib/intel_batchbuffer.c               |  20 ++++
 lib/intel_batchbuffer.h               |  20 ++++
 lib/meson.build                       |   1 +
 tests/Makefile.sources                |   3 +
 tests/i915/gem_huc_copy.c             | 130 ++++++++++++++++++++++++++
 tests/intel-ci/fast-feedback.testlist |   1 +
 tests/meson.build                     |   1 +
 10 files changed, 335 insertions(+)
 create mode 100644 lib/huc_copy.c
 create mode 100644 lib/huc_copy.h
 create mode 100644 tests/i915/gem_huc_copy.c

diff --git a/lib/Makefile.sources b/lib/Makefile.sources
index 1e2c88ae..a882b0e7 100644
--- a/lib/Makefile.sources
+++ b/lib/Makefile.sources
@@ -84,6 +84,8 @@ lib_source_list =	 	\
 	ioctl_wrappers.h	\
 	media_fill.c		\
 	media_fill.h            \
+	huc_copy.c		\
+	huc_copy.h		\
 	media_spin.h		\
 	media_spin.c		\
 	gpgpu_fill.h		\
diff --git a/lib/huc_copy.c b/lib/huc_copy.c
new file mode 100644
index 00000000..c3dece9f
--- /dev/null
+++ b/lib/huc_copy.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright © 2019 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 <i915_drm.h>
+#include "huc_copy.h"
+
+static void
+gen9_emit_huc_virtual_addr_state(struct drm_i915_gem_exec_object2 *src,
+		struct drm_i915_gem_exec_object2 *dst,
+		struct drm_i915_gem_relocation_entry *reloc_src,
+		struct drm_i915_gem_relocation_entry *reloc_dst,
+		uint32_t *buf,
+		int *i)
+{
+	buf[(*i)++] = HUC_VIRTUAL_ADDR_STATE;
+
+	for (int j = 0; j < HUC_VIRTUAL_ADDR_REGION_NUM; j++) {
+		if (j == HUC_VIRTUAL_ADDR_REGION_SRC) {
+			buf[(*i)++] = src->offset;
+
+			reloc_src->target_handle = src->handle;
+			reloc_src->delta = 0;
+			reloc_src->offset = (*i - 1) * sizeof(buf[0]);
+			reloc_src->read_domains = 0;
+			reloc_src->write_domain = 0;
+		} else if (j == HUC_VIRTUAL_ADDR_REGION_DST) {
+			buf[(*i)++] = dst->offset;
+
+			reloc_dst->target_handle = dst->handle;
+			reloc_dst->delta = 0;
+			reloc_dst->offset = (*i - 1) * sizeof(buf[0]);
+			reloc_dst->read_domains = 0;
+			reloc_dst->write_domain = I915_GEM_DOMAIN_RENDER;
+		} else {
+			buf[(*i)++] = 0;
+		}
+		buf[(*i)++] = 0;
+		buf[(*i)++] = 0;
+	}
+}
+
+void
+gen9_huc_copyfunc(int fd,
+		struct drm_i915_gem_exec_object2 *obj,
+		int n_bo)
+{
+	struct drm_i915_gem_relocation_entry reloc[2];
+	struct drm_i915_gem_execbuffer2 execbuf;
+	int i = 0;
+	uint32_t buf[63];
+
+	/* load huc kernel */
+	buf[i++] = HUC_IMEM_STATE;
+	buf[i++] = 0;
+	buf[i++] = 0;
+	buf[i++] = 0;
+	buf[i++] = 0x3;
+
+	buf[i++] = MFX_WAIT;
+	buf[i++] = MFX_WAIT;
+
+	buf[i++] = HUC_PIPE_MODE_SELECT;
+	buf[i++] = 0;
+	buf[i++] = 0;
+
+	buf[i++] = MFX_WAIT;
+
+	memset(reloc, 0, sizeof(reloc));
+	gen9_emit_huc_virtual_addr_state(&obj[0], &obj[1], &reloc[0], &reloc[1], buf, &i);
+
+	buf[i++] = HUC_START;
+	buf[i++] = 1;
+
+	buf[i++] = MI_BATCH_BUFFER_END;
+
+	gem_write(fd, obj[2].handle, 0, buf, sizeof(buf));
+	obj[2].relocation_count = 2;
+	obj[2].relocs_ptr = to_user_pointer(reloc);
+
+	memset(&execbuf, 0, sizeof(execbuf));
+	execbuf.buffers_ptr = to_user_pointer(obj);
+	execbuf.buffer_count = n_bo;
+	execbuf.flags = I915_EXEC_BSD;
+
+	gem_execbuf(fd, &execbuf);
+}
diff --git a/lib/huc_copy.h b/lib/huc_copy.h
new file mode 100644
index 00000000..088f7954
--- /dev/null
+++ b/lib/huc_copy.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright © 2019 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.
+ *
+ */
+
+#ifndef HUC_COPY_H
+#define HUC_COPY_H
+
+#include <stdint.h>
+#include <string.h>
+#include "ioctl_wrappers.h"
+#include "intel_reg.h"
+
+#define PARALLEL_VIDEO_PIPE		(0x3<<29)
+#define MFX_WAIT			(PARALLEL_VIDEO_PIPE|(0x1<<27)|(0x1<<8))
+
+#define HUC_IMEM_STATE			(PARALLEL_VIDEO_PIPE|(0x2<<27)|(0xb<<23)|(0x1<<16)|0x3)
+#define HUC_PIPE_MODE_SELECT		(PARALLEL_VIDEO_PIPE|(0x2<<27)|(0xb<<23)|0x1)
+#define HUC_START			(PARALLEL_VIDEO_PIPE|(0x2<<27)|(0xb<<23)|(0x21<<16))
+#define HUC_VIRTUAL_ADDR_STATE		(PARALLEL_VIDEO_PIPE|(0x2<<27)|(0xb<<23)|(0x4<<16)|0x2f)
+
+#define HUC_VIRTUAL_ADDR_REGION_NUM	16
+#define HUC_VIRTUAL_ADDR_REGION_SRC	0
+#define HUC_VIRTUAL_ADDR_REGION_DST	14
+
+void
+gen9_huc_copyfunc(int fd,
+		struct drm_i915_gem_exec_object2 *obj,
+		int n_bo);
+
+#endif /* HUC_COPY_H */
diff --git a/lib/intel_batchbuffer.c b/lib/intel_batchbuffer.c
index f1a45b47..93ac4546 100644
--- a/lib/intel_batchbuffer.c
+++ b/lib/intel_batchbuffer.c
@@ -45,6 +45,7 @@
 #include "gpgpu_fill.h"
 #include "igt_aux.h"
 #include "i830_reg.h"
+#include "huc_copy.h"
 
 #include <i915_drm.h>
 
@@ -1171,3 +1172,22 @@ igt_media_spinfunc_t igt_get_media_spinfunc(int devid)
 
 	return spin;
 }
+
+/**
+ * igt_get_huc_copyfunc:
+ * @devid: pci device id
+ *
+ * Returns:
+ *
+ * The platform-specific huc copy function pointer for the device specified
+ * with @devid. Will return NULL when no media spin function is implemented.
+ */
+igt_huc_copyfunc_t igt_get_huc_copyfunc(int devid)
+{
+	igt_huc_copyfunc_t copy = NULL;
+
+	if (IS_GEN12(devid) || IS_GEN11(devid) || IS_GEN9(devid))
+		copy = gen9_huc_copyfunc;
+
+	return copy;
+}
diff --git a/lib/intel_batchbuffer.h b/lib/intel_batchbuffer.h
index 442f3a18..a3d4ec36 100644
--- a/lib/intel_batchbuffer.h
+++ b/lib/intel_batchbuffer.h
@@ -422,4 +422,24 @@ typedef void (*igt_media_spinfunc_t)(struct intel_batchbuffer *batch,
 
 igt_media_spinfunc_t igt_get_media_spinfunc(int devid);
 
+/**
+ * igt_huc_copyfunc_t:
+ * @fd: drm fd
+ * @obj: drm_i915_gem_exec_object2 buffer array
+ *       obj[0] is source buffer
+ *       obj[1] is destination buffer
+ *       obj[2] is execution buffer
+ * @n_bo: the size of @obj array
+ *
+ * This is the type of the per-platform huc copy functions.
+ *
+ * The huc copy function emits a batchbuffer to the VDBOX engine to
+ * invoke the HuC Copy kernel to copy 4K bytes from the source buffer
+ * to the destination buffer.
+ */
+typedef void (*igt_huc_copyfunc_t)(int fd,
+		struct drm_i915_gem_exec_object2 *obj,
+		int n_bo);
+
+igt_huc_copyfunc_t	igt_get_huc_copyfunc(int devid);
 #endif
diff --git a/lib/meson.build b/lib/meson.build
index e2060430..3f8f42f4 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -1,5 +1,6 @@
 lib_sources = [
 	'drmtest.c',
+	'huc_copy.c',
 	'i915/gem_context.c',
 	'i915/gem_engine_topology.c',
 	'i915/gem_scheduler.c',
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 4e44c98c..ec94d25b 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -314,6 +314,9 @@ gem_media_fill_SOURCES = i915/gem_media_fill.c
 TESTS_progs += gem_media_vme
 gem_media_vme_SOURCES = i915/gem_media_vme.c
 
+TESTS_progs += gem_huc_copy
+gem_huc_copy_SOURCES = i915/gem_huc_copy.c
+
 TESTS_progs += gem_mmap
 gem_mmap_SOURCES = i915/gem_mmap.c
 
diff --git a/tests/i915/gem_huc_copy.c b/tests/i915/gem_huc_copy.c
new file mode 100644
index 00000000..06a9129b
--- /dev/null
+++ b/tests/i915/gem_huc_copy.c
@@ -0,0 +1,130 @@
+/*
+ * Copyright © 2019 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 "igt.h"
+#include <stdbool.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include "drm.h"
+#include "igt_sysfs.c"
+
+IGT_TEST_DESCRIPTION("A very simple workload for the HuC.");
+
+#define HUC_COPY_DATA_BUF_SIZE	4096
+
+static void
+compare_huc_copy_result(int drm_fd, uint32_t src_handle, uint32_t dst_handle)
+{
+	char src_output[HUC_COPY_DATA_BUF_SIZE];
+	char dst_output[HUC_COPY_DATA_BUF_SIZE];
+
+	gem_read(drm_fd, src_handle, 0, src_output, HUC_COPY_DATA_BUF_SIZE);
+	gem_read(drm_fd, dst_handle, 0, dst_output, HUC_COPY_DATA_BUF_SIZE);
+
+	for (int i = 0; i < HUC_COPY_DATA_BUF_SIZE; i++)
+		igt_assert_f(src_output[i] == dst_output[i],
+			     "Exepected %c, found %c at %4d.\n",
+			     src_output[i], dst_output[i], i);
+}
+
+static int get_huc_status(int fd)
+{
+	int status = 0;
+	drm_i915_getparam_t gp = {
+		.param = I915_PARAM_HUC_STATUS,
+		.value = &status,
+	};
+
+	if (igt_ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp))
+		return -errno;
+
+	errno = 0;
+	return status;
+}
+
+igt_main
+{
+	int drm_fd = -1;
+	uint32_t devid;
+	igt_huc_copyfunc_t huc_copy;
+
+	igt_fixture {
+		int status;
+
+		drm_fd = drm_open_driver(DRIVER_INTEL);
+		igt_require_gem(drm_fd);
+		devid = intel_get_drm_devid(drm_fd);
+		huc_copy = igt_get_huc_copyfunc(devid);
+
+		igt_require_f(huc_copy, "no huc_copy function\n");
+		status = get_huc_status(drm_fd);
+		igt_skip_on_f(status == -ENODEV,
+			      "HuC is not present on this platform!\n");
+		igt_skip_on_f(status == -EOPNOTSUPP,
+			      "HuC firmware is disabled!\n");
+		igt_fail_on_f(status < 0, "HuC firmware loading error: %i, %s\n",
+			      -status, strerror(-status));
+		igt_fail_on_f(status == 0, "HuC firmware is not running!\n");
+	}
+
+	igt_describe("Make sure that Huc firmware works"
+		     "by copying a char array using Huc"
+		     "and verifying the copied result");
+
+	igt_subtest("huc-copy") {
+		char inputs[HUC_COPY_DATA_BUF_SIZE];
+		struct drm_i915_gem_exec_object2 obj[3];
+
+		/* Initialize src buffer randomly */
+		srand(time(NULL));
+		for (int i = 0; i < HUC_COPY_DATA_BUF_SIZE; i++)
+			inputs[i] = (char) (rand() % 256);
+
+		memset(obj, 0, sizeof(obj));
+		/* source buffer object for storing input */
+		obj[0].handle = gem_create(drm_fd, HUC_COPY_DATA_BUF_SIZE);
+		/* destination buffer object to receive input */
+		obj[1].handle = gem_create(drm_fd, HUC_COPY_DATA_BUF_SIZE);
+		/* execution buffer object */
+		obj[2].handle = gem_create(drm_fd, 4096);
+
+		gem_write(drm_fd, obj[0].handle, 0, inputs, HUC_COPY_DATA_BUF_SIZE);
+
+		huc_copy(drm_fd, obj, 3);
+		compare_huc_copy_result(drm_fd, obj[0].handle, obj[1].handle);
+
+		gem_close(drm_fd, obj[0].handle);
+		gem_close(drm_fd, obj[1].handle);
+		gem_close(drm_fd, obj[2].handle);
+	}
+
+	igt_fixture
+		close(drm_fd);
+}
diff --git a/tests/intel-ci/fast-feedback.testlist b/tests/intel-ci/fast-feedback.testlist
index 2ccad438..f332d8ec 100644
--- a/tests/intel-ci/fast-feedback.testlist
+++ b/tests/intel-ci/fast-feedback.testlist
@@ -30,6 +30,7 @@ igt@gem_flink_basic@bad-open
 igt@gem_flink_basic@basic
 igt@gem_flink_basic@double-flink
 igt@gem_flink_basic@flink-lifetime
+igt@gem_huc_copy@huc_copy
 igt@gem_linear_blits@basic
 igt@gem_mmap@basic
 igt@gem_mmap_gtt@basic
diff --git a/tests/meson.build b/tests/meson.build
index e882f4dc..a4934a85 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -163,6 +163,7 @@ i915_progs = [
 	'gem_gtt_cpu_tlb',
 	'gem_gtt_hog',
 	'gem_gtt_speed',
+	'gem_huc_copy',
 	'gem_linear_blits',
 	'gem_lut_handle',
 	'gem_madvise',
-- 
2.21.0.5.gaeb582a983

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