These tests were initially reviewed/merged under the gem_softpin title.
They use softpinning and userptr mechanism to share buffers between
CPU and GPU.
The userptr part was decoupled from them recently. Adding these tests
under a different name to ensure buffered SVM usage testing.
The only change made was to instantiate the drm fd in the main instead
of every subtest.
v2: Addressed all comments, removed duplicate tests/functions as suggested
Cc: Michel Thierry <michel.thierry@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
tests/Makefile.sources | 1 +
tests/gem_buffered_svm.c | 755 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 756 insertions(+)
create mode 100644 tests/gem_buffered_svm.c
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 7dc75d5..a65f3f1 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -17,6 +17,7 @@ TESTS_progs_M = \
drv_hangman \
gem_bad_reloc \
gem_basic \
+ gem_buffered_svm \
gem_busy \
gem_caching \
gem_close_race \
diff --git a/tests/gem_buffered_svm.c b/tests/gem_buffered_svm.c
new file mode 100644
index 0000000..c3a18cd
--- /dev/null
+++ b/tests/gem_buffered_svm.c
@@ -0,0 +1,755 @@
+/*
+ * Copyright © 2015 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.
+ *
+ * Authors:
+ * Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>
+ * Thomas Daniel <thomas.daniel@xxxxxxxxx>
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <malloc.h>
+#include "drm.h"
+#include "ioctl_wrappers.h"
+#include "drmtest.h"
+#include "intel_chipset.h"
+#include "intel_io.h"
+#include "i915_drm.h"
+#include <assert.h>
+#include <sys/wait.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include "igt_kms.h"
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "igt.h"
+
+#define BO_SIZE 4096
+#define MULTIPAGE_BO_SIZE 2 * BO_SIZE
+#define STORE_BATCH_BUFFER_SIZE 4
+#define EXEC_OBJECT_PINNED (1<<4)
+#define EXEC_OBJECT_SUPPORTS_48B_ADDRESS (1<<3)
+#define SHARED_BUFFER_SIZE 4096
+
+typedef struct drm_i915_gem_userptr i915_gem_userptr;
+
+static void *create_mem_buffer(uint64_t size);
+static void gem_pin_userptr_test(int fd);
+static void gem_pin_high_address_test(int fd);
+
+#define NO_PPGTT 0
+#define ALIASING_PPGTT 1
+#define FULL_32_BIT_PPGTT 2
+#define FULL_48_BIT_PPGTT 3
+/* uses_full_ppgtt
+ * Finds supported PPGTT details.
+ * @fd DRM fd
+ * @min can be
+ * 0 - No PPGTT
+ * 1 - Aliasing PPGTT
+ * 2 - Full PPGTT (32b)
+ * 3 - Full PPGTT (48b)
+ * RETURNS true/false if min support is present
+*/
+static bool uses_full_ppgtt(int fd, int min)
+{
+ return gem_gtt_type(fd) >= min;
+}
+
+/* create_mem_buffer
+ * Creates a 4K aligned CPU buffer
+ * @size - size of buffer
+ * RETURNS pointer to buffer of @size
+*/
+static void *create_mem_buffer(uint64_t size)
+{
+ void *addr;
+ int ret;
+
+ ret = posix_memalign(&addr, 4096, size);
+ igt_assert(ret == 0);
+
+ return addr;
+}
+
+/* setup_exec_obj
+ * populate exec object
+ * @exec - exec object
+ * @handle - handle to gem buffer
+ * @flags - any flags
+ * @offset - requested VMA
+*/
+static void setup_exec_obj(struct drm_i915_gem_exec_object2 *exec,
+ uint32_t handle, uint32_t flags,
+ uint64_t offset)
+{
+ memset(exec, 0, sizeof(struct drm_i915_gem_exec_object2));
+ exec->handle = handle;
+ exec->flags = flags;
+ exec->offset = offset;
+}
+
+/* gen8_canonical_addr
+ * Used to convert any address into canonical form, i.e. [63:48] == [47].
+ * Based on kernel's sign_extend64 implementation.
+ * @address - a virtual address
+*/
+#define GEN8_HIGH_ADDRESS_BIT 47
+static uint64_t gen8_canonical_addr(uint64_t address)
+{
+ __u8 shift = 63 - GEN8_HIGH_ADDRESS_BIT;
+ return (__s64)(address << shift) >> shift;
+}
+
+/* gem_store_data_svm
+ * populate batch buffer with MI_STORE_DWORD_IMM command
+ * @fd: drm file descriptor
+ * @cmd_buf: batch buffer
+ * @vaddr: destination Virtual address
+ * @data: data to be store at destination
+ * @end: whether to end batch buffer or not
+*/
+static int gem_store_data_svm(int fd, uint32_t *cmd_buf, uint64_t vaddr,
+ uint32_t data, bool end)
+{
+ int i = 0;
+
+ cmd_buf[i++] = MI_STORE_DWORD_IMM;
+ cmd_buf[i++] = vaddr & 0xFFFFFFFC;
+ cmd_buf[i++] = (vaddr >> 32) & 0xFFFF; /* bits 32:47 */
+
+ cmd_buf[i++] = data;
+ if (end) {
+ cmd_buf[i++] = MI_BATCH_BUFFER_END;
+ cmd_buf[i++] = 0;
+ }
+
+ return(i * sizeof(uint32_t));
+}
+
+/* setup_execbuffer
+ * helper for buffer execution
+ * @execbuf - pointer to execbuffer
+ * @exec_object - pointer to exec object2 struct
+ * @ring - ring to be used
+ * @buffer_count - how manu buffers to submit
+ * @batch_length - length of batch buffer
+*/
+static void setup_execbuffer(struct drm_i915_gem_execbuffer2 *execbuf,
+ struct drm_i915_gem_exec_object2 *exec_object,
+ int ring, int buffer_count, int batch_length)
+{
+ execbuf->buffers_ptr = (unsigned long)exec_object;
+ execbuf->buffer_count = buffer_count;
+ execbuf->batch_start_offset = 0;
+ execbuf->batch_len = batch_length;
+ execbuf->cliprects_ptr = 0;
+ execbuf->num_cliprects = 0;
+ execbuf->DR1 = 0;
+ execbuf->DR4 = 0;
+ execbuf->flags = ring;
+ i915_execbuffer2_set_context_id(*execbuf, 0);
+ execbuf->rsvd2 = 0;
+}
+
+/* submit_and_sync
+ * Helper function for exec and sync functions
+ * @fd - drm fd
+ * @execbuf - pointer to execbuffer
+ * @batch_buf_handle - batch buffer handle
+*/
+static void submit_and_sync(int fd, struct drm_i915_gem_execbuffer2 *execbuf,
+ uint32_t batch_buf_handle)
+{
+ gem_execbuf(fd, execbuf);
+ gem_sync(fd, batch_buf_handle);
+}
+
+/* gem_userptr_sync
+ * helper for syncing to CPU domain - copy/paste from userblit
+ * @fd - drm fd
+ * @handle - buffer handle to sync
+*/
+static void gem_userptr_sync(int fd, uint32_t handle)
+{
+ gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+}
+
+
+/* gem_pin_userptr_test
+ * This test will create a shared buffer, and create a command
+ * for GPU to write data in it
+ * CPU will read and make sure expected value is obtained
+ * Malloc a 4K buffer
+ * Share buffer with with GPU by using userptr ioctl
+ * Create batch buffer to write DATA to first dword of buffer
+ * Use 0x1000 address as destination address in batch buffer
+ * Set EXEC_OBJECT_PINNED flag in exec object
+ * Set 'offset' in exec object to 0x1000
+ * Submit execbuffer
+ * Verify value of first DWORD in shared buffer matches DATA
+*/
+static void gem_pin_userptr_test(int fd)
+{
+ uint32_t *shared_buffer;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 exec_object2[2];
+ uint32_t batch_buffer[STORE_BATCH_BUFFER_SIZE + 2];
+ uint32_t batch_buf_handle, shared_buf_handle;
+ int ring, len;
+ const uint32_t data = 0x12345678;
+ uint64_t pinning_offset = 0x1000;
+
+ igt_require(uses_full_ppgtt(fd, ALIASING_PPGTT));
+ batch_buf_handle = gem_create(fd, BO_SIZE);
+
+ /* create cpu buffer */
+ shared_buffer = create_mem_buffer(BO_SIZE);
+
+ /* share with GPU */
+ gem_userptr(fd, (void*)shared_buffer, BO_SIZE, 0, 0, &shared_buf_handle);
+
+ /* create command buffer with write command */
+ len = gem_store_data_svm(fd, batch_buffer, pinning_offset, data, true);
+ gem_write(fd, batch_buf_handle, 0, batch_buffer, len);
+
+ /* submit command buffer */
+ setup_exec_obj(&exec_object2[0], shared_buf_handle,
+ EXEC_OBJECT_PINNED, pinning_offset);
+ setup_exec_obj(&exec_object2[1], batch_buf_handle, 0, 0);
+
+ ring = I915_EXEC_RENDER;
+
+ setup_execbuffer(&execbuf, exec_object2, ring, 2, len);
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ gem_userptr_sync(fd, shared_buf_handle);
+
+ /* Check if driver pinned the buffer as requested */
+ igt_fail_on_f(exec_object2[0].offset != pinning_offset,
+ "\nFailed to pin at requested offset");
+ /* check on CPU to see if value changes */
+ igt_fail_on_f(shared_buffer[0] != data,
+ "\nCPU read does not match GPU write,\
+ expected: 0x%x, got: 0x%x\n",
+ data, shared_buffer[0]);
+
+ gem_close(fd, batch_buf_handle);
+ gem_close(fd, shared_buf_handle);
+ free(shared_buffer);
+}
+
+/* gem_multiple_process_test
+ * Run basic test simultaneously with multiple processes
+ * This will test pinning same VA separately in each process
+
+ * fork();
+ * Execute basic test in parent/child processes
+*/
+#define MAX_NUM_PROCESSES 10
+
+static void gem_multiple_process_test(int fd)
+{
+ igt_require(uses_full_ppgtt(fd, ALIASING_PPGTT));
+
+ igt_fork(child, MAX_NUM_PROCESSES) {
+ gem_pin_userptr_test(fd);
+ }
+ igt_waitchildren();
+
+}
+
+
+/* gem_repin_test
+ * This test tries to repin a buffer at a previously pinned vma
+ * from a different execbuf.
+ * Malloc a 4K buffer
+ * Share buffer with with GPU by using userptr ioctl
+ * Create batch buffer to write DATA to first dword of buffer
+ * Use 0x1000 address as destination address in batch buffer
+ * Set EXEC_OBJECT_PINNED flag in exec object
+ * Set 'offset' in exec object to 0x1000 VMA
+ * Submit execbuffer
+ * Verify value of first DWORD in shared buffer matches DATA
+
+ * Create second shared buffer
+ * Follow all steps above
+ * Execpt, for offset, use VMA of first buffer above
+ * Submit execbuffer
+ * Verify value of first DWORD in second shared buffer matches DATA
+*/
+static void gem_repin_test(int fd)
+{
+ uint32_t *shared_buffer;
+ uint32_t *shared_buffer1;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 exec_object2[2];
+ uint32_t batch_buffer[STORE_BATCH_BUFFER_SIZE + 2];
+ uint32_t batch_buf_handle, shared_buf_handle, shared_buf_handle1;
+ int ring, len;
+ const uint32_t data = 0x12345678;
+ uint64_t pinning_offset = 0x1000;
+
+ /* Create gem object */
+ igt_require(uses_full_ppgtt(fd, ALIASING_PPGTT));
+
+ batch_buf_handle = gem_create(fd, BO_SIZE);
+
+ /* create cpu buffer, set first elements to 0x0 */
+ shared_buffer = create_mem_buffer(BO_SIZE);
+ shared_buffer1 = create_mem_buffer(BO_SIZE);
+ shared_buffer[0] = 0x0;
+ shared_buffer1[0] = 0x0;
+
+ /* share with GPU and get handles */
+ gem_userptr(fd, (void*)shared_buffer, BO_SIZE, 0, 0, &shared_buf_handle);
+ gem_userptr(fd, (void*)shared_buffer1, BO_SIZE, 0, 0, &shared_buf_handle1);
+
+ /* create command buffer with write command */
+ len = gem_store_data_svm(fd, batch_buffer, pinning_offset, data, true);
+ gem_write(fd, batch_buf_handle, 0, batch_buffer, len);
+
+ /* submit command buffer */
+ setup_exec_obj(&exec_object2[0], shared_buf_handle,
+ EXEC_OBJECT_PINNED, pinning_offset);
+ setup_exec_obj(&exec_object2[1], batch_buf_handle, 0, 0);
+
+ ring = I915_EXEC_RENDER;
+
+ setup_execbuffer(&execbuf, exec_object2, ring, 2, len);
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ gem_userptr_sync(fd, shared_buf_handle);
+
+ igt_assert(exec_object2[0].offset == pinning_offset);
+ igt_assert(*shared_buffer == data);
+
+ /* Second buffer */
+ /* create command buffer with write command */
+ pinning_offset = exec_object2[0].offset;
+ len = gem_store_data_svm(fd, batch_buffer, pinning_offset, data, true);
+ gem_write(fd, batch_buf_handle, 0, batch_buffer, len);
+
+ /* submit command buffer */
+ /* Pin at shared_buffer, not shared_buffer1 */
+ /* We are requesting address where another buffer was pinned previously */
+ setup_exec_obj(&exec_object2[0], shared_buf_handle1,
+ EXEC_OBJECT_PINNED, pinning_offset);
+ setup_exec_obj(&exec_object2[1], batch_buf_handle, 0, 0);
+
+ ring = I915_EXEC_RENDER;
+
+ setup_execbuffer(&execbuf, exec_object2, ring, 2, len);
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ gem_userptr_sync(fd, shared_buf_handle1);
+
+ igt_assert(exec_object2[0].offset == pinning_offset);
+ igt_assert(*shared_buffer1 == data);
+
+ gem_close(fd, batch_buf_handle);
+ gem_close(fd, shared_buf_handle);
+
+ free(shared_buffer);
+ free(shared_buffer1);
+}
+
+/* gem_softpin_stress_test
+ * Stress test which creates 10K buffers and shares with GPU
+ * Create 100K uint32 buffers of size 4K each
+ * Share with GPU using userptr ioctl
+ * Create batch buffer to write DATA in first element of each buffer
+ * Pin each buffer to varying addresses starting from 0x800000000000 going below
+ * (requires offsets in canonical form)
+ * Execute Batch Buffer on Blit ring STRESS_NUM_LOOPS times
+ * Validate every buffer has DATA in first element
+ * Rinse and Repeat on Render ring
+*/
+#define STRESS_NUM_BUFFERS 100000
+#define STRESS_NUM_LOOPS 100
+#define STRESS_STORE_COMMANDS 4 * STRESS_NUM_BUFFERS
+#define STRESS_START_ADDRESS 0x800000000000
+static void gem_softpin_stress_test(int fd)
+{
+ uint32_t **shared_buffer;
+ uint32_t *shared_handle;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 *exec_object2;
+ uint32_t *batch_buffer;
+ uint32_t batch_buf_handle;
+ int ring, len;
+ int buf, loop;
+ uint64_t pinning_offset = STRESS_START_ADDRESS;
+
+ igt_require(uses_full_ppgtt(fd, FULL_48_BIT_PPGTT));
+
+ /* Allocate blobs for all data structures */
+ shared_handle = calloc(STRESS_NUM_BUFFERS, sizeof(uint32_t));
+ shared_buffer = calloc(STRESS_NUM_BUFFERS, sizeof(uint32_t *));
+ exec_object2 = calloc(STRESS_NUM_BUFFERS + 1,
+ sizeof(struct drm_i915_gem_exec_object2));
+ /* 4 dwords per buffer + 2 for the end of batchbuffer */
+ batch_buffer = calloc(STRESS_STORE_COMMANDS + 2, sizeof(uint32_t));
+ batch_buf_handle = gem_create(fd, (STRESS_STORE_COMMANDS + 2)*4);
+
+ /* create command buffer with write commands */
+ len = 0;
+ for(buf = 0; buf < STRESS_NUM_BUFFERS; buf++) {
+ shared_buffer[buf] = create_mem_buffer(BO_SIZE);
+ *shared_buffer[buf] = 0xFFFFFFFF;
+
+ /* share with GPU */
+ gem_userptr(fd, (void*)shared_buffer[buf], BO_SIZE, 0, 0,
+ &shared_handle[buf]);
+
+ setup_exec_obj(&exec_object2[buf], shared_handle[buf],
+ EXEC_OBJECT_PINNED |
+ EXEC_OBJECT_SUPPORTS_48B_ADDRESS,
+ gen8_canonical_addr(pinning_offset));
+ len += gem_store_data_svm(fd, batch_buffer + (len/4),
+ gen8_canonical_addr(pinning_offset),
+ buf, (buf == STRESS_NUM_BUFFERS-1)? \
+ true:false);
+
+ /* decremental 4K aligned address */
+ pinning_offset -= ALIGN(BO_SIZE, 4096);
+ }
+
+ /* setup command buffer */
+ gem_write(fd, batch_buf_handle, 0, batch_buffer, len);
+ setup_exec_obj(&exec_object2[STRESS_NUM_BUFFERS], batch_buf_handle,
+ 0, 0);
+
+ /* We want to run this on BLT ring if possible */
+ if (HAS_BLT_RING(intel_get_drm_devid(fd))) {
+ ring = I915_EXEC_BLT;
+
+ setup_execbuffer(&execbuf, exec_object2, ring,
+ STRESS_NUM_BUFFERS + 1, len);
+
+ for (loop = 0; loop < STRESS_NUM_LOOPS; loop++) {
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ /* Set pinning offset back to original value */
+ pinning_offset = STRESS_START_ADDRESS;
+ for(buf = 0; buf < STRESS_NUM_BUFFERS; buf++) {
+ gem_userptr_sync(fd, shared_handle[buf]);
+ igt_assert(exec_object2[buf].offset ==
+ gen8_canonical_addr(pinning_offset));
+ igt_fail_on_f(*shared_buffer[buf] != buf, \
+ "Mismatch in buffer %d, iteration %d: 0x%08X\n", \
+ buf, loop, *shared_buffer[buf]);
+ pinning_offset -= ALIGN(BO_SIZE, 4096);
+ }
+ /* Reset the buffer entries for next iteration */
+ for(buf = 0; buf < STRESS_NUM_BUFFERS; buf++) {
+ *shared_buffer[buf] = 0xFFFFFFFF;
+ }
+ }
+ }
+
+ /* Now Render Ring */
+ ring = I915_EXEC_RENDER;
+ setup_execbuffer(&execbuf, exec_object2, ring,
+ STRESS_NUM_BUFFERS + 1, len);
+ for (loop = 0; loop < STRESS_NUM_LOOPS; loop++) {
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ pinning_offset = STRESS_START_ADDRESS;
+ for(buf = 0; buf < STRESS_NUM_BUFFERS; buf++) {
+ gem_userptr_sync(fd, shared_handle[buf]);
+ igt_assert(exec_object2[buf].offset ==
+ gen8_canonical_addr(pinning_offset));
+ igt_fail_on_f(*shared_buffer[buf] != buf, \
+ "Mismatch in buffer %d, \
+ iteration %d: 0x%08X\n", buf, loop, *shared_buffer[buf]);
+ pinning_offset -= ALIGN(BO_SIZE, 4096);
+ }
+ /* Reset the buffer entries for next iteration */
+ for(buf = 0; buf < STRESS_NUM_BUFFERS; buf++) {
+ *shared_buffer[buf] = 0xFFFFFFFF;
+ }
+ }
+
+ for(buf = 0; buf < STRESS_NUM_BUFFERS; buf++) {
+ gem_close(fd, shared_handle[buf]);
+ free(shared_buffer[buf]);
+ }
+ gem_close(fd, batch_buf_handle);
+
+ free(shared_handle);
+ free(shared_buffer);
+ free(exec_object2);
+ free(batch_buffer);
+}
+
+/* gem_write_multipage_buffer
+ * Create a buffer spanning multiple pages, and share with GPU.
+ * Write to every element of the buffer
+ * and verify correct contents.
+
+ * Create 8K buffer
+ * Share with GPU using userptr ioctl
+ * Create batch buffer to write DATA in all elements of buffer
+ * Execute Batch Buffer
+ * Validate every element has DATA
+*/
+
+#define DWORD_SIZE sizeof(uint32_t)
+#define BB_SIZE ((MULTIPAGE_BO_SIZE / DWORD_SIZE) * STORE_BATCH_BUFFER_SIZE) + 2
+#define NUM_DWORDS (MULTIPAGE_BO_SIZE/sizeof(uint32_t))
+static void gem_write_multipage_buffer_test(int fd)
+{
+ uint32_t *shared_buffer;
+ uint32_t shared_handle;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 exec_object2[2];
+ uint32_t batch_buffer[BB_SIZE];
+ uint32_t batch_buf_handle;
+ int ring, len, j;
+ uint64_t pinning_offset=0x1000;
+ uint64_t vaddr;
+
+ igt_require(uses_full_ppgtt(fd, ALIASING_PPGTT));
+
+ batch_buf_handle = gem_create(fd, sizeof(batch_buffer));
+ shared_buffer = create_mem_buffer(MULTIPAGE_BO_SIZE);
+
+ len = 0;
+ memset(batch_buffer, 0, sizeof(batch_buffer));
+ memset(shared_buffer, 0, MULTIPAGE_BO_SIZE);
+
+ /* share with GPU */
+ gem_userptr(fd, (void*)shared_buffer, MULTIPAGE_BO_SIZE, 0, 0,
+ &shared_handle);
+ setup_exec_obj(&exec_object2[0], shared_handle,
+ EXEC_OBJECT_PINNED, pinning_offset);
+
+ /* create command buffer with write commands */
+ vaddr = pinning_offset;
+ for(j=0; j< NUM_DWORDS; j++) {
+ len += gem_store_data_svm(fd, batch_buffer + (len/4), vaddr,
+ j,
+ (j == NUM_DWORDS - 1) ? true:false);
+ vaddr += sizeof(shared_buffer[0]); /* 4 bytes */
+ }
+
+ gem_write(fd, batch_buf_handle, 0, batch_buffer, len);
+
+ /* submit command buffer */
+ setup_exec_obj(&exec_object2[1], batch_buf_handle, 0, 0);
+
+ ring = I915_EXEC_RENDER;
+ setup_execbuffer(&execbuf, exec_object2, ring, 2, len);
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ gem_userptr_sync(fd, shared_handle);
+
+ igt_assert(exec_object2[0].offset == pinning_offset);
+ for(j = 0; j < (MULTIPAGE_BO_SIZE/sizeof(uint32_t)); j++) {
+ igt_fail_on_f(shared_buffer[j] != j,
+ "Mismatch in index %d: 0x%08X\n", j, shared_buffer[j]);
+ }
+
+ gem_close(fd, batch_buf_handle);
+ gem_close(fd, shared_handle);
+
+ free(shared_buffer);
+}
+
+/* gem_pin_high_address_test
+ * This test will create a shared buffer, and create a command
+ * for GPU to write data in it. It will attempt to pin the buffer at address > 32 bits.
+ * CPU will read and make sure expected value is obtained
+
+ * Malloc a 4K buffer
+ * Share buffer with with GPU by using userptr ioctl
+ * Create batch buffer to write DATA to first dword of buffer
+ * Use virtual address of buffer as 0x1100000000 (> 32 bit)
+ * Set EXEC_OBJECT_PINNED flag in exec object
+ * Set 'offset' in exec object to shared buffer VMA
+ * Submit execbuffer
+ * Verify value of first DWORD in shared buffer matches DATA
+*/
+
+static void gem_pin_high_address_test(int fd)
+{
+ uint32_t *shared_buffer;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 exec_object2[2];
+ uint32_t batch_buffer[STORE_BATCH_BUFFER_SIZE + 2];
+ uint32_t batch_buf_handle, shared_buf_handle;
+ int ring, len;
+ const uint32_t data = 0x12345678;
+ uint64_t high_address = 0x1111FFFF000; /* 44 bit address */
+
+ igt_require(uses_full_ppgtt(fd, FULL_48_BIT_PPGTT));
+
+ batch_buf_handle = gem_create(fd, BO_SIZE);
+
+ /* create cpu buffer, set to all 0xF's */
+ shared_buffer = create_mem_buffer(BO_SIZE);
+ *shared_buffer = 0xFFFFFFFF;
+
+ /* share with GPU */
+ gem_userptr(fd, (void*)shared_buffer, BO_SIZE, 0, 0,
+ &shared_buf_handle);
+
+ /* create command buffer with write command */
+ len = gem_store_data_svm(fd, batch_buffer, high_address, data, true);
+ gem_write(fd, batch_buf_handle, 0, batch_buffer, len);
+
+ /* submit command buffer */
+ setup_exec_obj(&exec_object2[0], shared_buf_handle,
+ EXEC_OBJECT_PINNED | EXEC_OBJECT_SUPPORTS_48B_ADDRESS, high_address);
+ setup_exec_obj(&exec_object2[1], batch_buf_handle, 0, 0);
+
+ ring = I915_EXEC_RENDER;
+
+ setup_execbuffer(&execbuf, exec_object2, ring, 2, len);
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ gem_userptr_sync(fd, shared_buf_handle);
+
+ igt_assert(exec_object2[0].offset == high_address);
+ /* check on CPU to see if value changes */
+ igt_fail_on_f(shared_buffer[0] != data,
+ "\nCPU read does not match GPU write, \
+ expected: 0x%x, got: 0x%x\n", data, shared_buffer[0]);
+
+ gem_close(fd, batch_buf_handle);
+ gem_close(fd, shared_buf_handle);
+ free(shared_buffer);
+}
+
+/* gem_pin_near_48Bit_test
+ * This test will create a shared buffer,
+ * and create a command for GPU to write data in it. It will attempt
+ * to pin the buffer at address > 47 bits <= 48-bit.
+ * CPU will read and make sure expected value is obtained.
+ * Note that we must submit addresses in canonical form, not only
+ * because the addresss will be validated, but also the returned offset
+ * will be in this format.
+
+ * Malloc a 4K buffer
+ * Share buffer with with GPU by using userptr ioctl
+ * Create batch buffer to write DATA to first dword of buffer
+ * Use virtual address of buffer as range between 47-bit and 48-bit
+ * Set EXEC_OBJECT_PINNED flag in exec object
+ * Set 'offset' in exec object to shared buffer VMA
+ * Submit execbuffer
+ * Verify value of first DWORD in shared buffer matches DATA
+*/
+#define BEGIN_HIGH_ADDRESS 0x7FFFFFFFF000
+#define END_HIGH_ADDRESS 0xFFFFFFFFC000
+#define ADDRESS_INCREMENT 0x2000000000
+static void gem_pin_near_48Bit_test(int fd)
+{
+ uint32_t *shared_buffer;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ struct drm_i915_gem_exec_object2 exec_object2[2];
+ uint32_t batch_buffer[BO_SIZE];
+ uint32_t batch_buf_handle, shared_buf_handle;
+ int ring, len;
+ const uint32_t data = 0x12345678;
+ uint64_t high_address, can_high_address;
+
+ igt_require(uses_full_ppgtt(fd, FULL_48_BIT_PPGTT));
+
+ batch_buf_handle = gem_create(fd, BO_SIZE);
+
+ /* create cpu buffer, set to all 0xF's */
+ shared_buffer = create_mem_buffer(BO_SIZE);
+ *shared_buffer = 0xFFFFFFFF;
+
+ /* share with GPU */
+ gem_userptr(fd, (void*)shared_buffer, BO_SIZE, 0, 0, &shared_buf_handle);
+
+ for (high_address = BEGIN_HIGH_ADDRESS; high_address <= END_HIGH_ADDRESS;
+ high_address+=ADDRESS_INCREMENT) {
+ can_high_address = gen8_canonical_addr(high_address);
+ /* create command buffer with write command */
+ len = gem_store_data_svm(fd, batch_buffer, can_high_address,
+ data, true);
+ gem_write(fd, batch_buf_handle, 0, batch_buffer, len);
+ /* submit command buffer */
+ setup_exec_obj(&exec_object2[0], shared_buf_handle,
+ EXEC_OBJECT_PINNED | EXEC_OBJECT_SUPPORTS_48B_ADDRESS,
+ can_high_address);
+ setup_exec_obj(&exec_object2[1], batch_buf_handle, 0, 0);
+
+ ring = I915_EXEC_RENDER;
+ setup_execbuffer(&execbuf, exec_object2, ring, 2, len);
+ submit_and_sync(fd, &execbuf, batch_buf_handle);
+ gem_userptr_sync(fd, shared_buf_handle);
+
+ igt_assert(exec_object2[0].offset == can_high_address);
+ /* check on CPU to see if value changes */
+ igt_fail_on_f(shared_buffer[0] != data,
+ "\nCPU read does not match GPU write, expected: 0x%x, \
+ got: 0x%x\n, 0x%"PRIx64"", data, shared_buffer[0], high_address);
+ }
+
+ gem_close(fd, batch_buf_handle);
+ gem_close(fd, shared_buf_handle);
+ free(shared_buffer);
+}
+
+
+igt_main
+{
+ int fd = -1;
+
+ igt_skip_on_simulation();
+
+ igt_fixture {
+ fd = drm_open_driver(DRIVER_INTEL);
+ igt_require(gem_has_softpin(fd));
+ }
+
+ /* All tests need PPGTT support */
+ igt_subtest("gem_pin_userptr")
+ gem_pin_userptr_test(fd);
+ igt_subtest("gem_multiple_process")
+ gem_multiple_process_test(fd);
+ igt_subtest("gem_repin")
+ gem_repin_test(fd);
+ igt_subtest("gem_write_multipage_buffer")
+ gem_write_multipage_buffer_test(fd);
+
+ /* Following tests need 48 bit PPGTT support */
+ igt_subtest("gem_softpin_stress")
+ gem_softpin_stress_test(fd);
+ igt_subtest("gem_pin_high_address")
+ gem_pin_high_address_test(fd);
+ igt_subtest("gem_pin_near_48Bit")
+ gem_pin_near_48Bit_test(fd);
+
+ igt_fixture
+ close(fd);
+
+ igt_exit();
+}
--
1.9.1
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