src/freedreno/vulkan/tu_drm.c

   1 /*
   2  * Copyright © 2018 Google, Inc.
   3  * Copyright © 2015 Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 #include <stdint.h>
  26 #include <sys/ioctl.h>
  27 #include <errno.h>
  28
  29 #include <msm_drm.h>
  30
  31 #include "tu_private.h"
  32
  33 #include "xf86drm.h"
  34
  35 /**
  36  * Return gem handle on success. Return 0 on failure.
  37  */
  38 uint32_t
  39 tu_gem_new(struct tu_device *dev, uint64_t size, uint32_t flags)
  40 {
  41    struct drm_msm_gem_new req = {
  42       .size = size,
  43       .flags = flags,
  44    };
  45
  46
  47    int ret = drmCommandWriteRead(dev->physical_device->local_fd, DRM_MSM_GEM_NEW,
  48                                  &req, sizeof(req));
  49    if (ret)
  50       return 0;
  51
  52    return req.handle;
  53 }
  54
  55 void
  56 tu_gem_close(struct tu_device *dev, uint32_t gem_handle)
  57 {
  58    struct drm_gem_close req = {
  59       .handle = gem_handle,
  60    };
  61
  62    drmIoctl(dev->physical_device->local_fd, DRM_IOCTL_GEM_CLOSE, &req);
  63 }
  64
  65 /** Return UINT64_MAX on error. */
  66 static uint64_t
  67 tu_gem_info(struct tu_device *dev, uint32_t gem_handle, uint32_t flags)
  68 {
  69    struct drm_msm_gem_info req = {
  70       .handle = gem_handle,
  71       .flags = flags,
  72    };
  73
  74    int ret = drmCommandWriteRead(dev->physical_device->local_fd, DRM_MSM_GEM_INFO,
  75                                  &req, sizeof(req));
  76    if (ret == -1)
  77       return UINT64_MAX;
  78
  79    return req.offset;
  80 }
  81
  82 /** Return UINT64_MAX on error. */
  83 uint64_t
  84 tu_gem_info_offset(struct tu_device *dev, uint32_t gem_handle)
  85 {
  86    return tu_gem_info(dev, gem_handle, 0);
  87 }
  88
  89 /** Return UINT64_MAX on error. */
  90 uint64_t
  91 tu_gem_info_iova(struct tu_device *dev, uint32_t gem_handle)
  92 {
  93    return tu_gem_info(dev, gem_handle, MSM_INFO_IOVA);
  94 }