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314 lines
9.0 KiB
314 lines
9.0 KiB
/*
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* Copyright © 2011,2012 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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* Authors:
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* Chris Wilson <chris@chris-wilson.co.uk>
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*
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*/
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/*
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* Testcase: run a nop batch which is really big
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*
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* Mostly useful to stress-test the error-capture code
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*/
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#include "igt.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include "drm.h"
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IGT_TEST_DESCRIPTION("Run a large nop batch to stress test the error capture"
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" code.");
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#define FORCE_PREAD_PWRITE 0
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static int use_64bit_relocs;
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static void exec1(int fd, uint32_t handle, uint64_t reloc_ofs, unsigned flags, char *ptr)
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{
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struct drm_i915_gem_execbuffer2 execbuf;
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struct drm_i915_gem_exec_object2 gem_exec[1];
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struct drm_i915_gem_relocation_entry gem_reloc[1];
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gem_reloc[0].offset = reloc_ofs;
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gem_reloc[0].delta = 0;
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gem_reloc[0].target_handle = handle;
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gem_reloc[0].read_domains = I915_GEM_DOMAIN_RENDER;
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gem_reloc[0].write_domain = 0;
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gem_reloc[0].presumed_offset = 0;
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gem_exec[0].handle = handle;
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gem_exec[0].relocation_count = 1;
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gem_exec[0].relocs_ptr = to_user_pointer(gem_reloc);
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gem_exec[0].alignment = 0;
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gem_exec[0].offset = 0;
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gem_exec[0].flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS;
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gem_exec[0].rsvd1 = 0;
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gem_exec[0].rsvd2 = 0;
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execbuf.buffers_ptr = to_user_pointer(gem_exec);
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execbuf.buffer_count = 1;
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execbuf.batch_start_offset = 0;
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execbuf.batch_len = 8;
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execbuf.cliprects_ptr = 0;
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execbuf.num_cliprects = 0;
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execbuf.DR1 = 0;
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execbuf.DR4 = 0;
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execbuf.flags = flags;
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i915_execbuffer2_set_context_id(execbuf, 0);
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execbuf.rsvd2 = 0;
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/* Avoid hitting slowpaths in the reloc processing which might yield a
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* presumed_offset of -1. Happens when the batch is still busy from the
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* last round. */
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gem_sync(fd, handle);
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gem_execbuf(fd, &execbuf);
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igt_warn_on(gem_reloc[0].presumed_offset == -1);
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if (use_64bit_relocs) {
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uint64_t tmp;
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if (ptr)
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tmp = *(uint64_t *)(ptr+reloc_ofs);
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else
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gem_read(fd, handle, reloc_ofs, &tmp, sizeof(tmp));
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igt_assert_eq(tmp, gem_reloc[0].presumed_offset);
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} else {
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uint32_t tmp;
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if (ptr)
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tmp = *(uint32_t *)(ptr+reloc_ofs);
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else
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gem_read(fd, handle, reloc_ofs, &tmp, sizeof(tmp));
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igt_assert_eq(tmp, gem_reloc[0].presumed_offset);
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}
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}
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static void xchg_reloc(void *array, unsigned i, unsigned j)
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{
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struct drm_i915_gem_relocation_entry *reloc = array;
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struct drm_i915_gem_relocation_entry *a = &reloc[i];
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struct drm_i915_gem_relocation_entry *b = &reloc[j];
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struct drm_i915_gem_relocation_entry tmp;
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tmp = *a;
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*a = *b;
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*b = tmp;
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}
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static void execN(int fd, uint32_t handle, uint64_t batch_size, unsigned flags, char *ptr)
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{
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#define reloc_ofs(N, T) ((((N)+1) << 12) - 4*(1 + ((N) == ((T)-1))))
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struct drm_i915_gem_execbuffer2 execbuf;
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struct drm_i915_gem_exec_object2 gem_exec[1];
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struct drm_i915_gem_relocation_entry *gem_reloc;
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uint64_t n, nreloc = batch_size >> 12;
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gem_reloc = calloc(nreloc, sizeof(*gem_reloc));
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igt_assert(gem_reloc);
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for (n = 0; n < nreloc; n++) {
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gem_reloc[n].offset = reloc_ofs(n, nreloc);
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gem_reloc[n].target_handle = handle;
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gem_reloc[n].read_domains = I915_GEM_DOMAIN_RENDER;
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gem_reloc[n].presumed_offset = n ^ 0xbeefdeaddeadbeef;
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if (ptr) {
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if (use_64bit_relocs)
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*(uint64_t *)(ptr + gem_reloc[n].offset) = gem_reloc[n].presumed_offset;
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else
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*(uint32_t *)(ptr + gem_reloc[n].offset) = gem_reloc[n].presumed_offset;
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} else
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gem_write(fd, handle, gem_reloc[n].offset, &gem_reloc[n].presumed_offset, 4*(1+use_64bit_relocs));
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}
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memset(gem_exec, 0, sizeof(gem_exec));
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gem_exec[0].handle = handle;
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gem_exec[0].relocation_count = nreloc;
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gem_exec[0].relocs_ptr = to_user_pointer(gem_reloc);
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gem_exec[0].flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS;
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memset(&execbuf, 0, sizeof(execbuf));
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execbuf.buffers_ptr = to_user_pointer(gem_exec);
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execbuf.buffer_count = 1;
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execbuf.flags = flags;
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/* Avoid hitting slowpaths in the reloc processing which might yield a
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* presumed_offset of -1. Happens when the batch is still busy from the
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* last round. */
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gem_sync(fd, handle);
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igt_permute_array(gem_reloc, nreloc, xchg_reloc);
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gem_execbuf(fd, &execbuf);
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for (n = 0; n < nreloc; n++) {
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if (igt_warn_on(gem_reloc[n].presumed_offset == -1))
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break;
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}
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if (use_64bit_relocs) {
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for (n = 0; n < nreloc; n++) {
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uint64_t tmp;
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if (ptr)
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tmp = *(uint64_t *)(ptr+reloc_ofs(n, nreloc));
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else
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gem_read(fd, handle, reloc_ofs(n, nreloc), &tmp, sizeof(tmp));
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igt_assert_eq(tmp, gem_reloc[n].presumed_offset);
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}
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} else {
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for (n = 0; n < nreloc; n++) {
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uint32_t tmp;
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if (ptr)
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tmp = *(uint32_t *)(ptr+reloc_ofs(n, nreloc));
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else
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gem_read(fd, handle, reloc_ofs(n, nreloc), &tmp, sizeof(tmp));
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igt_assert_eq(tmp, gem_reloc[n].presumed_offset);
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}
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}
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free(gem_reloc);
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#undef reloc_ofs
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}
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static void exhaustive(int fd)
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{
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uint32_t batch[2] = {MI_BATCH_BUFFER_END};
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uint64_t batch_size, max, ggtt_max, reloc_ofs;
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max = 3 * gem_aperture_size(fd) / 4;
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ggtt_max = 3 * gem_global_aperture_size(fd) / 4;
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intel_require_memory(1, max, CHECK_RAM);
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for (batch_size = 4096; batch_size <= max; ) {
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uint32_t handle;
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void *ptr;
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handle = gem_create(fd, batch_size);
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gem_write(fd, handle, 0, batch, sizeof(batch));
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if (!FORCE_PREAD_PWRITE && gem_has_llc(fd))
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ptr = __gem_mmap__cpu(fd, handle, 0, batch_size, PROT_READ);
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else if (!FORCE_PREAD_PWRITE && gem_mmap__has_wc(fd))
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ptr = __gem_mmap__wc(fd, handle, 0, batch_size, PROT_READ);
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else
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ptr = NULL;
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igt_debug("Forwards (%lld)\n", (long long)batch_size);
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for (reloc_ofs = 4096; reloc_ofs < batch_size; reloc_ofs += 4096) {
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igt_debug("batch_size %llu, reloc_ofs %llu\n",
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(long long)batch_size, (long long)reloc_ofs);
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exec1(fd, handle, reloc_ofs, 0, ptr);
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if (batch_size < ggtt_max)
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exec1(fd, handle, reloc_ofs, I915_EXEC_SECURE, ptr);
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}
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igt_debug("Backwards (%lld)\n", (long long)batch_size);
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for (reloc_ofs = batch_size - 4096; reloc_ofs; reloc_ofs -= 4096) {
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igt_debug("batch_size %llu, reloc_ofs %llu\n",
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(long long)batch_size, (long long)reloc_ofs);
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exec1(fd, handle, reloc_ofs, 0, ptr);
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if (batch_size < ggtt_max)
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exec1(fd, handle, reloc_ofs, I915_EXEC_SECURE, ptr);
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}
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igt_debug("Random (%lld)\n", (long long)batch_size);
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execN(fd, handle, batch_size, 0, ptr);
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if (batch_size < ggtt_max)
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execN(fd, handle, batch_size, I915_EXEC_SECURE, ptr);
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if (ptr)
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munmap(ptr, batch_size);
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gem_madvise(fd, handle, I915_MADV_DONTNEED);
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if (batch_size < max && 2*batch_size > max)
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batch_size = max;
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else
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batch_size *= 2;
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}
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}
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static void single(int i915)
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{
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const uint32_t bbe = MI_BATCH_BUFFER_END;
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uint64_t batch_size, limit;
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uint32_t handle;
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void *ptr;
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batch_size = (intel_get_avail_ram_mb() / 2) << 20; /* XXX CI slack? */
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limit = gem_aperture_size(i915) - (256 << 10); /* low pages reserved */
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if (!gem_uses_full_ppgtt(i915))
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limit = 3 * limit / 4;
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batch_size = min(batch_size, limit);
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batch_size = ALIGN(batch_size, 4096);
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igt_info("Submitting a %'"PRId64"MiB batch, %saperture size %'"PRId64"MiB\n",
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batch_size >> 20,
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gem_uses_full_ppgtt(i915) ? "" : "shared ",
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gem_aperture_size(i915) >> 20);
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intel_require_memory(1, batch_size, CHECK_RAM);
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handle = gem_create(i915, batch_size);
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gem_write(i915, handle, 0, &bbe, sizeof(bbe));
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if (!FORCE_PREAD_PWRITE && gem_has_llc(i915))
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ptr = __gem_mmap__cpu(i915, handle, 0, batch_size, PROT_READ);
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else if (!FORCE_PREAD_PWRITE && gem_mmap__has_wc(i915))
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ptr = __gem_mmap__wc(i915, handle, 0, batch_size, PROT_READ);
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else
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ptr = NULL;
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execN(i915, handle, batch_size, 0, ptr);
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if (ptr)
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munmap(ptr, batch_size);
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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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use_64bit_relocs = intel_gen(intel_get_drm_devid(i915)) >= 8;
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}
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igt_subtest("single")
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single(i915);
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igt_subtest("exhaustive")
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exhaustive(i915);
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igt_fixture
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close(i915);
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}
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