From: Rob Clark Date: Sat, 28 Sep 2013 15:28:35 +0000 (-0400) Subject: drm/msm: prime support X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=05b849111c07454fd2f5b074ca7eb56ccdb8828c;p=linux-beck.git drm/msm: prime support Signed-off-by: Rob Clark Acked-by: David Brown --- diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index e17914889e54..e5fa12b0d21e 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -21,6 +21,7 @@ msm-y := \ msm_drv.o \ msm_fb.o \ msm_gem.o \ + msm_gem_prime.o \ msm_gem_submit.o \ msm_gpu.o \ msm_ringbuffer.o diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index b3a2f1629041..cfeebdd911dd 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -680,7 +680,10 @@ static const struct file_operations fops = { }; static struct drm_driver msm_driver = { - .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET, + .driver_features = DRIVER_HAVE_IRQ | + DRIVER_GEM | + DRIVER_PRIME | + DRIVER_MODESET, .load = msm_load, .unload = msm_unload, .open = msm_open, @@ -698,6 +701,16 @@ static struct drm_driver msm_driver = { .dumb_create = msm_gem_dumb_create, .dumb_map_offset = msm_gem_dumb_map_offset, .dumb_destroy = drm_gem_dumb_destroy, + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_export = drm_gem_prime_export, + .gem_prime_import = drm_gem_prime_import, + .gem_prime_pin = msm_gem_prime_pin, + .gem_prime_unpin = msm_gem_prime_unpin, + .gem_prime_get_sg_table = msm_gem_prime_get_sg_table, + .gem_prime_import_sg_table = msm_gem_prime_import_sg_table, + .gem_prime_vmap = msm_gem_prime_vmap, + .gem_prime_vunmap = msm_gem_prime_vunmap, #ifdef CONFIG_DEBUG_FS .debugfs_init = msm_debugfs_init, .debugfs_cleanup = msm_debugfs_cleanup, diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index df8f1d084bc1..9ce90c267ef8 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -141,13 +141,20 @@ uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj); int msm_gem_get_iova_locked(struct drm_gem_object *obj, int id, uint32_t *iova); int msm_gem_get_iova(struct drm_gem_object *obj, int id, uint32_t *iova); +struct page **msm_gem_get_pages(struct drm_gem_object *obj); +void msm_gem_put_pages(struct drm_gem_object *obj); void msm_gem_put_iova(struct drm_gem_object *obj, int id); int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args); -int msm_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev, - uint32_t handle); int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, uint32_t handle, uint64_t *offset); +struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj); +void *msm_gem_prime_vmap(struct drm_gem_object *obj); +void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); +struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev, + size_t size, struct sg_table *sg); +int msm_gem_prime_pin(struct drm_gem_object *obj); +void msm_gem_prime_unpin(struct drm_gem_object *obj); void *msm_gem_vaddr_locked(struct drm_gem_object *obj); void *msm_gem_vaddr(struct drm_gem_object *obj); int msm_gem_queue_inactive_work(struct drm_gem_object *obj, @@ -163,6 +170,8 @@ int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, uint32_t size, uint32_t flags, uint32_t *handle); struct drm_gem_object *msm_gem_new(struct drm_device *dev, uint32_t size, uint32_t flags); +struct drm_gem_object *msm_gem_import(struct drm_device *dev, + uint32_t size, struct sg_table *sgt); struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane); const struct msm_format *msm_framebuffer_format(struct drm_framebuffer *fb); diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 2bae46c66a30..ea2c96f9459b 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -17,6 +17,7 @@ #include #include +#include #include "msm_drv.h" #include "msm_gem.h" @@ -77,6 +78,21 @@ static void put_pages(struct drm_gem_object *obj) } } +struct page **msm_gem_get_pages(struct drm_gem_object *obj) +{ + struct drm_device *dev = obj->dev; + struct page **p; + mutex_lock(&dev->struct_mutex); + p = get_pages(obj); + mutex_unlock(&dev->struct_mutex); + return p; +} + +void msm_gem_put_pages(struct drm_gem_object *obj) +{ + /* when we start tracking the pin count, then do something here */ +} + int msm_gem_mmap_obj(struct drm_gem_object *obj, struct vm_area_struct *vma) { @@ -510,10 +526,21 @@ void msm_gem_free_object(struct drm_gem_object *obj) drm_gem_free_mmap_offset(obj); - if (msm_obj->vaddr) - vunmap(msm_obj->vaddr); + if (obj->import_attach) { + if (msm_obj->vaddr) + dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); + + /* Don't drop the pages for imported dmabuf, as they are not + * ours, just free the array we allocated: + */ + if (msm_obj->pages) + drm_free_large(msm_obj->pages); - put_pages(obj); + } else { + if (msm_obj->vaddr) + vunmap(msm_obj->vaddr); + put_pages(obj); + } if (msm_obj->resv == &msm_obj->_resv) reservation_object_fini(msm_obj->resv); @@ -549,17 +576,12 @@ int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, return ret; } -struct drm_gem_object *msm_gem_new(struct drm_device *dev, - uint32_t size, uint32_t flags) +static int msm_gem_new_impl(struct drm_device *dev, + uint32_t size, uint32_t flags, + struct drm_gem_object **obj) { struct msm_drm_private *priv = dev->dev_private; struct msm_gem_object *msm_obj; - struct drm_gem_object *obj = NULL; - int ret; - - WARN_ON(!mutex_is_locked(&dev->struct_mutex)); - - size = PAGE_ALIGN(size); switch (flags & MSM_BO_CACHE_MASK) { case MSM_BO_UNCACHED: @@ -569,21 +591,12 @@ struct drm_gem_object *msm_gem_new(struct drm_device *dev, default: dev_err(dev->dev, "invalid cache flag: %x\n", (flags & MSM_BO_CACHE_MASK)); - ret = -EINVAL; - goto fail; + return -EINVAL; } msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); - if (!msm_obj) { - ret = -ENOMEM; - goto fail; - } - - obj = &msm_obj->base; - - ret = drm_gem_object_init(dev, obj, size); - if (ret) - goto fail; + if (!msm_obj) + return -ENOMEM; msm_obj->flags = flags; @@ -594,6 +607,67 @@ struct drm_gem_object *msm_gem_new(struct drm_device *dev, INIT_LIST_HEAD(&msm_obj->inactive_work); list_add_tail(&msm_obj->mm_list, &priv->inactive_list); + *obj = &msm_obj->base; + + return 0; +} + +struct drm_gem_object *msm_gem_new(struct drm_device *dev, + uint32_t size, uint32_t flags) +{ + struct drm_gem_object *obj; + int ret; + + WARN_ON(!mutex_is_locked(&dev->struct_mutex)); + + size = PAGE_ALIGN(size); + + ret = msm_gem_new_impl(dev, size, flags, &obj); + if (ret) + goto fail; + + ret = drm_gem_object_init(dev, obj, size); + if (ret) + goto fail; + + return obj; + +fail: + if (obj) + drm_gem_object_unreference_unlocked(obj); + + return ERR_PTR(ret); +} + +struct drm_gem_object *msm_gem_import(struct drm_device *dev, + uint32_t size, struct sg_table *sgt) +{ + struct msm_gem_object *msm_obj; + struct drm_gem_object *obj; + int ret, npages; + + size = PAGE_ALIGN(size); + + ret = msm_gem_new_impl(dev, size, MSM_BO_WC, &obj); + if (ret) + goto fail; + + drm_gem_private_object_init(dev, obj, size); + + npages = size / PAGE_SIZE; + + msm_obj = to_msm_bo(obj); + msm_obj->sgt = sgt; + msm_obj->pages = drm_malloc_ab(npages, sizeof(struct page *)); + if (!msm_obj->pages) { + ret = -ENOMEM; + goto fail; + } + + ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); + if (ret) + goto fail; + return obj; fail: diff --git a/drivers/gpu/drm/msm/msm_gem_prime.c b/drivers/gpu/drm/msm/msm_gem_prime.c new file mode 100644 index 000000000000..d48f9fc5129b --- /dev/null +++ b/drivers/gpu/drm/msm/msm_gem_prime.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include "msm_drv.h" +#include "msm_gem.h" + + +struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj) +{ + struct msm_gem_object *msm_obj = to_msm_bo(obj); + BUG_ON(!msm_obj->sgt); /* should have already pinned! */ + return msm_obj->sgt; +} + +void *msm_gem_prime_vmap(struct drm_gem_object *obj) +{ + return msm_gem_vaddr(obj); +} + +void msm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) +{ + /* TODO msm_gem_vunmap() */ +} + +struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev, + size_t size, struct sg_table *sg) +{ + return msm_gem_import(dev, size, sg); +} + +int msm_gem_prime_pin(struct drm_gem_object *obj) +{ + if (!obj->import_attach) + msm_gem_get_pages(obj); + return 0; +} + +void msm_gem_prime_unpin(struct drm_gem_object *obj) +{ + if (!obj->import_attach) + msm_gem_put_pages(obj); +}