IABSD.fr/xenocara/lib/libdrm/amdgpu/amdgpu_asic_id.c

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• Author : jsg
  Date : 2018-09-13 11:55:15
  Hash : a81d3f52
  Message : Import libdrm 2.4.94

• lib/libdrm/amdgpu/amdgpu_asic_id.c

• /*
   * Copyright © 2017 Advanced Micro Devices, Inc.
   * All Rights Reserved.
   *
   * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 <ctype.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <stdint.h>
  #include <string.h>
  #include <unistd.h>
  #include <errno.h>
  
  #include "xf86drm.h"
  #include "amdgpu_drm.h"
  #include "amdgpu_internal.h"
  
  static int parse_one_line(struct amdgpu_device *dev, const char *line)
  {
  	char *buf, *saveptr;
  	char *s_did;
  	uint32_t did;
  	char *s_rid;
  	uint32_t rid;
  	char *s_name;
  	char *endptr;
  	int r = -EINVAL;
  
  	/* ignore empty line and commented line */
  	if (strlen(line) == 0 || line[0] == '#')
  		return -EAGAIN;
  
  	buf = strdup(line);
  	if (!buf)
  		return -ENOMEM;
  
  	/* device id */
  	s_did = strtok_r(buf, ",", &saveptr);
  	if (!s_did)
  		goto out;
  
  	did = strtol(s_did, &endptr, 16);
  	if (*endptr)
  		goto out;
  
  	if (did != dev->info.asic_id) {
  		r = -EAGAIN;
  		goto out;
  	}
  
  	/* revision id */
  	s_rid = strtok_r(NULL, ",", &saveptr);
  	if (!s_rid)
  		goto out;
  
  	rid = strtol(s_rid, &endptr, 16);
  	if (*endptr)
  		goto out;
  
  	if (rid != dev->info.pci_rev_id) {
  		r = -EAGAIN;
  		goto out;
  	}
  
  	/* marketing name */
  	s_name = strtok_r(NULL, ",", &saveptr);
  	if (!s_name)
  		goto out;
  
  	/* trim leading whitespaces or tabs */
  	while (isblank(*s_name))
  		s_name++;
  	if (strlen(s_name) == 0)
  		goto out;
  
  	dev->marketing_name = strdup(s_name);
  	if (dev->marketing_name)
  		r = 0;
  	else
  		r = -ENOMEM;
  
  out:
  	free(buf);
  
  	return r;
  }
  
  void amdgpu_parse_asic_ids(struct amdgpu_device *dev)
  {
  	FILE *fp;
  	char *line = NULL;
  	size_t len = 0;
  	ssize_t n;
  	int line_num = 1;
  	int r = 0;
  
  	fp = fopen(AMDGPU_ASIC_ID_TABLE, "r");
  	if (!fp) {
  		fprintf(stderr, "%s: %s\n", AMDGPU_ASIC_ID_TABLE,
  			strerror(errno));
  		return;
  	}
  
  	/* 1st valid line is file version */
  	while ((n = getline(&line, &len, fp)) != -1) {
  		/* trim trailing newline */
  		if (line[n - 1] == '\n')
  			line[n - 1] = '\0';
  
  		/* ignore empty line and commented line */
  		if (strlen(line) == 0 || line[0] == '#') {
  			line_num++;
  			continue;
  		}
  
  		drmMsg("%s version: %s\n", AMDGPU_ASIC_ID_TABLE, line);
  		break;
  	}
  
  	while ((n = getline(&line, &len, fp)) != -1) {
  		/* trim trailing newline */
  		if (line[n - 1] == '\n')
  			line[n - 1] = '\0';
  
  		r = parse_one_line(dev, line);
  		if (r != -EAGAIN)
  			break;
  
  		line_num++;
  	}
  
  	if (r == -EINVAL) {
  		fprintf(stderr, "Invalid format: %s: line %d: %s\n",
  			AMDGPU_ASIC_ID_TABLE, line_num, line);
  	} else if (r && r != -EAGAIN) {
  		fprintf(stderr, "%s: Cannot parse ASIC IDs: %s\n",
  			__func__, strerror(-r));
  	}
  
  	free(line);
  	fclose(fp);
  }