drivers/gpu/drm/radeon/radeon_gem.c - kernel/msm-4.19 - Gitiles

 /*
  * Copyright 2008 Advanced Micro Devices, Inc.
  * Copyright 2008 Red Hat Inc.
  * Copyright 2009 Jerome Glisse.
  *
  * 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.
  *
  * Authors: Dave Airlie
  *          Alex Deucher
  *          Jerome Glisse
  */
 #include "drmP.h"
 #include "drm.h"
 #include "radeon_drm.h"
 #include "radeon.h"

 int radeon_gem_object_init(struct drm_gem_object *obj)
 {
 	/* we do nothings here */
 	return 0;
 }

 void radeon_gem_object_free(struct drm_gem_object *gobj)
 {
 	struct radeon_object *robj = gobj->driver_private;

 	gobj->driver_private = NULL;
 	if (robj) {
 		radeon_object_unref(&robj);
 	}
 }

 int radeon_gem_object_create(struct radeon_device *rdev, int size,
 			     int alignment, int initial_domain,
 			     bool discardable, bool kernel,
 			     bool interruptible,
 			     struct drm_gem_object **obj)
 {
 	struct drm_gem_object *gobj;
 	struct radeon_object *robj;
 	int r;

 	*obj = NULL;
 	gobj = drm_gem_object_alloc(rdev->ddev, size);
 	if (!gobj) {
 		return -ENOMEM;
 	}
 	/* At least align on page size */
 	if (alignment < PAGE_SIZE) {
 		alignment = PAGE_SIZE;
 	}
 	r = radeon_object_create(rdev, gobj, size, kernel, initial_domain,
 				 interruptible, &robj);
 	if (r) {
 		DRM_ERROR("Failed to allocate GEM object (%d, %d, %u)\n",
 			  size, initial_domain, alignment);
 		mutex_lock(&rdev->ddev->struct_mutex);
 		drm_gem_object_unreference(gobj);
 		mutex_unlock(&rdev->ddev->struct_mutex);
 		return r;
 	}
 	gobj->driver_private = robj;
 	*obj = gobj;
 	return 0;
 }

 int radeon_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
 			  uint64_t *gpu_addr)
 {
 	struct radeon_object *robj = obj->driver_private;
 	uint32_t flags;

 	switch (pin_domain) {
 	case RADEON_GEM_DOMAIN_VRAM:
 		flags = TTM_PL_FLAG_VRAM;
 		break;
 	case RADEON_GEM_DOMAIN_GTT:
 		flags = TTM_PL_FLAG_TT;
 		break;
 	default:
 		flags = TTM_PL_FLAG_SYSTEM;
 		break;
 	}
 	return radeon_object_pin(robj, flags, gpu_addr);
 }

 void radeon_gem_object_unpin(struct drm_gem_object *obj)
 {
 	struct radeon_object *robj = obj->driver_private;
 	radeon_object_unpin(robj);
 }

 int radeon_gem_set_domain(struct drm_gem_object *gobj,
 			  uint32_t rdomain, uint32_t wdomain)
 {
 	struct radeon_object *robj;
 	uint32_t domain;
 	int r;

 	/* FIXME: reeimplement */
 	robj = gobj->driver_private;
 	/* work out where to validate the buffer to */
 	domain = wdomain;
 	if (!domain) {
 		domain = rdomain;
 	}
 	if (!domain) {
 		/* Do nothings */
 		printk(KERN_WARNING "Set domain withou domain !\n");
 		return 0;
 	}
 	if (domain == RADEON_GEM_DOMAIN_CPU) {
 		/* Asking for cpu access wait for object idle */
 		r = radeon_object_wait(robj);
 		if (r) {
 			printk(KERN_ERR "Failed to wait for object !\n");
 			return r;
 		}
 	}
 	return 0;
 }

 int radeon_gem_init(struct radeon_device *rdev)
 {
 	INIT_LIST_HEAD(&rdev->gem.objects);
 	return 0;
 }

 void radeon_gem_fini(struct radeon_device *rdev)
 {
 	radeon_object_force_delete(rdev);
 }


 /*
  * GEM ioctls.
  */
 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 			  struct drm_file *filp)
 {
 	struct radeon_device *rdev = dev->dev_private;
 	struct drm_radeon_gem_info *args = data;

 	args->vram_size = rdev->mc.real_vram_size;
 	/* FIXME: report somethings that makes sense */
 	args->vram_visible = rdev->mc.real_vram_size - (4 * 1024 * 1024);
 	args->gart_size = rdev->mc.gtt_size;
 	return 0;
 }

 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 			   struct drm_file *filp)
 {
 	/* TODO: implement */
 	DRM_ERROR("unimplemented %s\n", __func__);
 	return -ENOSYS;
 }

 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 			    struct drm_file *filp)
 {
 	/* TODO: implement */
 	DRM_ERROR("unimplemented %s\n", __func__);
 	return -ENOSYS;
 }

 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 			    struct drm_file *filp)
 {
 	struct radeon_device *rdev = dev->dev_private;
 	struct drm_radeon_gem_create *args = data;
 	struct drm_gem_object *gobj;
 	uint32_t handle;
 	int r;

 	/* create a gem object to contain this object in */
 	args->size = roundup(args->size, PAGE_SIZE);
 	r = radeon_gem_object_create(rdev, args->size, args->alignment,
 				     args->initial_domain, false,
 				     false, true, &gobj);
 	if (r) {
 		return r;
 	}
 	r = drm_gem_handle_create(filp, gobj, &handle);
 	if (r) {
 		mutex_lock(&dev->struct_mutex);
 		drm_gem_object_unreference(gobj);
 		mutex_unlock(&dev->struct_mutex);
 		return r;
 	}
 	mutex_lock(&dev->struct_mutex);
 	drm_gem_object_handle_unreference(gobj);
 	mutex_unlock(&dev->struct_mutex);
 	args->handle = handle;
 	return 0;
 }

 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *filp)
 {
 	/* transition the BO to a domain -
 	 * just validate the BO into a certain domain */
 	struct drm_radeon_gem_set_domain *args = data;
 	struct drm_gem_object *gobj;
 	struct radeon_object *robj;
 	int r;

 	/* for now if someone requests domain CPU -
 	 * just make sure the buffer is finished with */

 	/* just do a BO wait for now */
 	gobj = drm_gem_object_lookup(dev, filp, args->handle);
 	if (gobj == NULL) {
 		return -EINVAL;
 	}
 	robj = gobj->driver_private;

 	r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);

 	mutex_lock(&dev->struct_mutex);
 	drm_gem_object_unreference(gobj);
 	mutex_unlock(&dev->struct_mutex);
 	return r;
 }

 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 			  struct drm_file *filp)
 {
 	struct drm_radeon_gem_mmap *args = data;
 	struct drm_gem_object *gobj;
 	struct radeon_object *robj;
 	int r;

 	gobj = drm_gem_object_lookup(dev, filp, args->handle);
 	if (gobj == NULL) {
 		return -EINVAL;
 	}
 	robj = gobj->driver_private;
 	r = radeon_object_mmap(robj, &args->addr_ptr);
 	mutex_lock(&dev->struct_mutex);
 	drm_gem_object_unreference(gobj);
 	mutex_unlock(&dev->struct_mutex);
 	return r;
 }

 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 			  struct drm_file *filp)
 {
 	struct drm_radeon_gem_busy *args = data;
 	struct drm_gem_object *gobj;
 	struct radeon_object *robj;
 	int r;
 	uint32_t cur_placement;

 	gobj = drm_gem_object_lookup(dev, filp, args->handle);
 	if (gobj == NULL) {
 		return -EINVAL;
 	}
 	robj = gobj->driver_private;
 	r = radeon_object_busy_domain(robj, &cur_placement);
 	if (cur_placement == TTM_PL_VRAM)
 		args->domain = RADEON_GEM_DOMAIN_VRAM;
 	if (cur_placement == TTM_PL_FLAG_TT)
 		args->domain = RADEON_GEM_DOMAIN_GTT;
 	if (cur_placement == TTM_PL_FLAG_SYSTEM)
 		args->domain = RADEON_GEM_DOMAIN_CPU;
 	mutex_lock(&dev->struct_mutex);
 	drm_gem_object_unreference(gobj);
 	mutex_unlock(&dev->struct_mutex);
 	return 0;
 }

 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 			      struct drm_file *filp)
 {
 	struct drm_radeon_gem_wait_idle *args = data;
 	struct drm_gem_object *gobj;
 	struct radeon_object *robj;
 	int r;

 	gobj = drm_gem_object_lookup(dev, filp, args->handle);
 	if (gobj == NULL) {
 		return -EINVAL;
 	}
 	robj = gobj->driver_private;
 	r = radeon_object_wait(robj);
 	mutex_lock(&dev->struct_mutex);
 	drm_gem_object_unreference(gobj);
 	mutex_unlock(&dev->struct_mutex);
 	return r;
 }

 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *filp)
 {
 	struct drm_radeon_gem_set_tiling *args = data;
 	struct drm_gem_object *gobj;
 	struct radeon_object *robj;
 	int r = 0;

 	DRM_DEBUG("%d \n", args->handle);
 	gobj = drm_gem_object_lookup(dev, filp, args->handle);
 	if (gobj == NULL)
 		return -EINVAL;
 	robj = gobj->driver_private;
 	radeon_object_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 	mutex_lock(&dev->struct_mutex);
 	drm_gem_object_unreference(gobj);
 	mutex_unlock(&dev->struct_mutex);
 	return r;
 }

 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *filp)
 {
 	struct drm_radeon_gem_get_tiling *args = data;
 	struct drm_gem_object *gobj;
 	struct radeon_object *robj;
 	int r = 0;

 	DRM_DEBUG("\n");
 	gobj = drm_gem_object_lookup(dev, filp, args->handle);
 	if (gobj == NULL)
 		return -EINVAL;
 	robj = gobj->driver_private;
 	radeon_object_get_tiling_flags(robj, &args->tiling_flags,
 				       &args->pitch);
 	mutex_lock(&dev->struct_mutex);
 	drm_gem_object_unreference(gobj);
 	mutex_unlock(&dev->struct_mutex);
 	return r;
 }
	/*
	* Copyright 2008 Advanced Micro Devices, Inc.
	* Copyright 2008 Red Hat Inc.
	* Copyright 2009 Jerome Glisse.
	*
	* 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.
	*
	* Authors: Dave Airlie
	* Alex Deucher
	* Jerome Glisse
	*/
	#include "drmP.h"
	#include "drm.h"
	#include "radeon_drm.h"
	#include "radeon.h"

	int radeon_gem_object_init(struct drm_gem_object *obj)
	{
	/* we do nothings here */
	return 0;
	}

	void radeon_gem_object_free(struct drm_gem_object *gobj)
	{
	struct radeon_object *robj = gobj->driver_private;

	gobj->driver_private = NULL;
	if (robj) {
	radeon_object_unref(&robj);
	}
	}

	int radeon_gem_object_create(struct radeon_device *rdev, int size,
	int alignment, int initial_domain,
	bool discardable, bool kernel,
	bool interruptible,
	struct drm_gem_object **obj)
	{
	struct drm_gem_object *gobj;
	struct radeon_object *robj;
	int r;

	*obj = NULL;
	gobj = drm_gem_object_alloc(rdev->ddev, size);
	if (!gobj) {
	return -ENOMEM;
	}
	/* At least align on page size */
	if (alignment < PAGE_SIZE) {
	alignment = PAGE_SIZE;
	}
	r = radeon_object_create(rdev, gobj, size, kernel, initial_domain,
	interruptible, &robj);
	if (r) {
	DRM_ERROR("Failed to allocate GEM object (%d, %d, %u)\n",
	size, initial_domain, alignment);
	mutex_lock(&rdev->ddev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&rdev->ddev->struct_mutex);
	return r;
	}
	gobj->driver_private = robj;
	*obj = gobj;
	return 0;
	}

	int radeon_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
	uint64_t *gpu_addr)
	{
	struct radeon_object *robj = obj->driver_private;
	uint32_t flags;

	switch (pin_domain) {
	case RADEON_GEM_DOMAIN_VRAM:
	flags = TTM_PL_FLAG_VRAM;
	break;
	case RADEON_GEM_DOMAIN_GTT:
	flags = TTM_PL_FLAG_TT;
	break;
	default:
	flags = TTM_PL_FLAG_SYSTEM;
	break;
	}
	return radeon_object_pin(robj, flags, gpu_addr);
	}

	void radeon_gem_object_unpin(struct drm_gem_object *obj)
	{
	struct radeon_object *robj = obj->driver_private;
	radeon_object_unpin(robj);
	}

	int radeon_gem_set_domain(struct drm_gem_object *gobj,
	uint32_t rdomain, uint32_t wdomain)
	{
	struct radeon_object *robj;
	uint32_t domain;
	int r;

	/* FIXME: reeimplement */
	robj = gobj->driver_private;
	/* work out where to validate the buffer to */
	domain = wdomain;
	if (!domain) {
	domain = rdomain;
	}
	if (!domain) {
	/* Do nothings */
	printk(KERN_WARNING "Set domain withou domain !\n");
	return 0;
	}
	if (domain == RADEON_GEM_DOMAIN_CPU) {
	/* Asking for cpu access wait for object idle */
	r = radeon_object_wait(robj);
	if (r) {
	printk(KERN_ERR "Failed to wait for object !\n");
	return r;
	}
	}
	return 0;
	}

	int radeon_gem_init(struct radeon_device *rdev)
	{
	INIT_LIST_HEAD(&rdev->gem.objects);
	return 0;
	}

	void radeon_gem_fini(struct radeon_device *rdev)
	{
	radeon_object_force_delete(rdev);
	}


	/*
	* GEM ioctls.
	*/
	int radeon_gem_info_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	struct radeon_device *rdev = dev->dev_private;
	struct drm_radeon_gem_info *args = data;

	args->vram_size = rdev->mc.real_vram_size;
	/* FIXME: report somethings that makes sense */
	args->vram_visible = rdev->mc.real_vram_size - (4 * 1024 * 1024);
	args->gart_size = rdev->mc.gtt_size;
	return 0;
	}

	int radeon_gem_pread_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	/* TODO: implement */
	DRM_ERROR("unimplemented %s\n", __func__);
	return -ENOSYS;
	}

	int radeon_gem_pwrite_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	/* TODO: implement */
	DRM_ERROR("unimplemented %s\n", __func__);
	return -ENOSYS;
	}

	int radeon_gem_create_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	struct radeon_device *rdev = dev->dev_private;
	struct drm_radeon_gem_create *args = data;
	struct drm_gem_object *gobj;
	uint32_t handle;
	int r;

	/* create a gem object to contain this object in */
	args->size = roundup(args->size, PAGE_SIZE);
	r = radeon_gem_object_create(rdev, args->size, args->alignment,
	args->initial_domain, false,
	false, true, &gobj);
	if (r) {
	return r;
	}
	r = drm_gem_handle_create(filp, gobj, &handle);
	if (r) {
	mutex_lock(&dev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	return r;
	}
	mutex_lock(&dev->struct_mutex);
	drm_gem_object_handle_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	args->handle = handle;
	return 0;
	}

	int radeon_gem_set_domain_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	/* transition the BO to a domain -
	* just validate the BO into a certain domain */
	struct drm_radeon_gem_set_domain *args = data;
	struct drm_gem_object *gobj;
	struct radeon_object *robj;
	int r;

	/* for now if someone requests domain CPU -
	* just make sure the buffer is finished with */

	/* just do a BO wait for now */
	gobj = drm_gem_object_lookup(dev, filp, args->handle);
	if (gobj == NULL) {
	return -EINVAL;
	}
	robj = gobj->driver_private;

	r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);

	mutex_lock(&dev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	return r;
	}

	int radeon_gem_mmap_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	struct drm_radeon_gem_mmap *args = data;
	struct drm_gem_object *gobj;
	struct radeon_object *robj;
	int r;

	gobj = drm_gem_object_lookup(dev, filp, args->handle);
	if (gobj == NULL) {
	return -EINVAL;
	}
	robj = gobj->driver_private;
	r = radeon_object_mmap(robj, &args->addr_ptr);
	mutex_lock(&dev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	return r;
	}

	int radeon_gem_busy_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	struct drm_radeon_gem_busy *args = data;
	struct drm_gem_object *gobj;
	struct radeon_object *robj;
	int r;
	uint32_t cur_placement;

	gobj = drm_gem_object_lookup(dev, filp, args->handle);
	if (gobj == NULL) {
	return -EINVAL;
	}
	robj = gobj->driver_private;
	r = radeon_object_busy_domain(robj, &cur_placement);
	if (cur_placement == TTM_PL_VRAM)
	args->domain = RADEON_GEM_DOMAIN_VRAM;
	if (cur_placement == TTM_PL_FLAG_TT)
	args->domain = RADEON_GEM_DOMAIN_GTT;
	if (cur_placement == TTM_PL_FLAG_SYSTEM)
	args->domain = RADEON_GEM_DOMAIN_CPU;
	mutex_lock(&dev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	return 0;
	}

	int radeon_gem_wait_idle_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	struct drm_radeon_gem_wait_idle *args = data;
	struct drm_gem_object *gobj;
	struct radeon_object *robj;
	int r;

	gobj = drm_gem_object_lookup(dev, filp, args->handle);
	if (gobj == NULL) {
	return -EINVAL;
	}
	robj = gobj->driver_private;
	r = radeon_object_wait(robj);
	mutex_lock(&dev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	return r;
	}

	int radeon_gem_set_tiling_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	struct drm_radeon_gem_set_tiling *args = data;
	struct drm_gem_object *gobj;
	struct radeon_object *robj;
	int r = 0;

	DRM_DEBUG("%d \n", args->handle);
	gobj = drm_gem_object_lookup(dev, filp, args->handle);
	if (gobj == NULL)
	return -EINVAL;
	robj = gobj->driver_private;
	radeon_object_set_tiling_flags(robj, args->tiling_flags, args->pitch);
	mutex_lock(&dev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	return r;
	}

	int radeon_gem_get_tiling_ioctl(struct drm_device dev, void data,
	struct drm_file *filp)
	{
	struct drm_radeon_gem_get_tiling *args = data;
	struct drm_gem_object *gobj;
	struct radeon_object *robj;
	int r = 0;

	DRM_DEBUG("\n");
	gobj = drm_gem_object_lookup(dev, filp, args->handle);
	if (gobj == NULL)
	return -EINVAL;
	robj = gobj->driver_private;
	radeon_object_get_tiling_flags(robj, &args->tiling_flags,
	&args->pitch);
	mutex_lock(&dev->struct_mutex);
	drm_gem_object_unreference(gobj);
	mutex_unlock(&dev->struct_mutex);
	return r;
	}