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/*
* Copyright © 2019 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 <errno.h>
#include <string.h>
#include "ioctl_wrappers.h"
#include "drmtest.h"
#include "i915/gem_vm.h"
/**
* SECTION:gem_vm
* @short_description: Helpers for dealing with address spaces (vm/GTT)
* @title: GEM Virtual Memory
*
* This helper library contains functions used for handling gem address
* spaces.
*/
/**
* gem_has_vm:
* @i915: open i915 drm file descriptor
*
* Returns: whether VM creation is supported or not.
*/
bool gem_has_vm(int i915)
{
uint32_t vm_id = 0;
__gem_vm_create(i915, &vm_id);
if (vm_id)
gem_vm_destroy(i915, vm_id);
return vm_id;
}
/**
* gem_require_vm:
* @i915: open i915 drm file descriptor
*
* This helper will automatically skip the test on platforms where address
* space creation is not available.
*/
void gem_require_vm(int i915)
{
igt_require(gem_has_vm(i915));
}
int __gem_vm_create(int i915, uint32_t *vm_id)
{
struct drm_i915_gem_vm_control ctl = {};
int err = 0;
if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_VM_CREATE, &ctl) == 0) {
*vm_id = ctl.vm_id;
} else {
err = -errno;
igt_assume(err != 0);
}
errno = 0;
return err;
}
/**
* gem_vm_create:
* @i915: open i915 drm file descriptor
*
* This wraps the VM_CREATE ioctl, which is used to allocate a new
* address space for use with GEM contexts.
*
* Returns: The id of the allocated address space.
*/
uint32_t gem_vm_create(int i915)
{
uint32_t vm_id;
igt_assert_eq(__gem_vm_create(i915, &vm_id), 0);
igt_assert(vm_id != 0);
return vm_id;
}
int __gem_vm_destroy(int i915, uint32_t vm_id)
{
struct drm_i915_gem_vm_control ctl = { .vm_id = vm_id };
int err = 0;
if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_VM_DESTROY, &ctl)) {
err = -errno;
igt_assume(err);
}
errno = 0;
return err;
}
/**
* gem_vm_destroy:
* @i915: open i915 drm file descriptor
* @vm_id: i915 VM id
*
* This wraps the VM_DESTROY ioctl, which is used to free an address space
* handle.
*/
void gem_vm_destroy(int i915, uint32_t vm_id)
{
igt_assert_eq(__gem_vm_destroy(i915, vm_id), 0);
}
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