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/*
 * Copyright © 2016 Red Hat.
 * Copyright © 2016 Bas Nieuwenhuizen
 *
 * based in part on anv driver which is:
 * 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.
 */

#include <stdlib.h>
#include <stdio.h>

#include "ac_debug.h"
#include "radv_debug.h"
#include "radv_shader.h"

#define TRACE_BO_SIZE 4096

bool
radv_init_trace(struct radv_device *device)
{
	struct radeon_winsys *ws = device->ws;

	device->trace_bo = ws->buffer_create(ws, TRACE_BO_SIZE, 8,
					     RADEON_DOMAIN_VRAM,
					     RADEON_FLAG_CPU_ACCESS);
	if (!device->trace_bo)
		return false;

	device->trace_id_ptr = ws->buffer_map(device->trace_bo);
	if (!device->trace_id_ptr)
		return false;

	memset(device->trace_id_ptr, 0, TRACE_BO_SIZE);

	ac_vm_fault_occured(device->physical_device->rad_info.chip_class,
			    &device->dmesg_timestamp, NULL);

	return true;
}

static void
radv_dump_trace(struct radv_device *device, struct radeon_winsys_cs *cs)
{
	const char *filename = getenv("RADV_TRACE_FILE");
	FILE *f = fopen(filename, "w");

	if (!f) {
		fprintf(stderr, "Failed to write trace dump to %s\n", filename);
		return;
	}

	fprintf(f, "Trace ID: %x\n", *device->trace_id_ptr);
	device->ws->cs_dump(cs, f, (const int*)device->trace_id_ptr, 2);
	fclose(f);
}

static bool
radv_gpu_hang_occured(struct radv_queue *queue)
{
	struct radeon_winsys *ws = queue->device->ws;
	enum ring_type ring;

	ring = radv_queue_family_to_ring(queue->queue_family_index);

	if (!ws->ctx_wait_idle(queue->hw_ctx, ring, queue->queue_idx))
		return true;

	return false;
}

void
radv_check_gpu_hangs(struct radv_queue *queue, struct radeon_winsys_cs *cs)
{
	struct radv_device *device = queue->device;
	uint64_t addr;

	bool hang_occurred = radv_gpu_hang_occured(queue);
	bool vm_fault_occurred = false;
	if (queue->device->instance->debug_flags & RADV_DEBUG_VM_FAULTS)
		vm_fault_occurred = ac_vm_fault_occured(device->physical_device->rad_info.chip_class,
		                                        &device->dmesg_timestamp, &addr);
	if (!hang_occurred && !vm_fault_occurred)
		return;

	if (vm_fault_occurred) {
		fprintf(stderr, "VM fault report.\n\n");
		fprintf(stderr, "Failing VM page: 0x%08"PRIx64"\n\n", addr);
	}

	radv_dump_trace(queue->device, cs);
	abort();
}

void
radv_print_spirv(struct radv_shader_module *module, FILE *fp)
{
	char path[] = "/tmp/fileXXXXXX";
	char line[2048], command[128];
	FILE *p;
	int fd;

	/* Dump the binary into a temporary file. */
	fd = mkstemp(path);
	if (fd < 0)
		return;

	if (write(fd, module->data, module->size) == -1)
		goto fail;

	sprintf(command, "spirv-dis %s", path);

	/* Disassemble using spirv-dis if installed. */
	p = popen(command, "r");
	if (p) {
		while (fgets(line, sizeof(line), p))
			fprintf(fp, "%s", line);
		pclose(p);
	}

fail:
	close(fd);
	unlink(path);
}