On Thu, Apr 12, 2012 at 7:19 PM, Ilija Hadzic
<ihad...@research.bell-labs.com> wrote:
> Make dev_mapping per-minor instead of per device. This is
> a preparatory patch for introducing render nodes. This
> will allow per-node instead of per-device mapping range,
> once we introduce render nodes.
One problem is this introduces a ttm/drm dependency that we don't
really have so far.
Dave
>
> Patch derived from 7c5cc4f63556e351e9e5980ed22accad410e3fdc
> originally authored by Dave Airlie.
>
> Signed-off-by: Ilija Hadzic <ihad...@research.bell-labs.com>
> ---
> drivers/gpu/drm/drm_drv.c | 1 -
> drivers/gpu/drm/drm_fops.c | 8 ++++----
> drivers/gpu/drm/drm_vm.c | 9 +++++++++
> drivers/gpu/drm/i915/i915_gem.c | 7 +++----
> drivers/gpu/drm/nouveau/nouveau_gem.c | 4 ++--
> drivers/gpu/drm/radeon/radeon_object.c | 4 ++--
> drivers/gpu/drm/radeon/radeon_ttm.c | 6 +++---
> drivers/gpu/drm/ttm/ttm_bo.c | 7 ++++---
> drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 5 ++---
> drivers/staging/omapdrm/omap_gem.c | 10 ++++------
> include/drm/drmP.h | 3 ++-
> include/drm/drm_mem_util.h | 3 +++
> include/drm/ttm/ttm_bo_driver.h | 3 ++-
> 13 files changed, 40 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index d166bd0..a4d7d44 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -236,7 +236,6 @@ int drm_lastclose(struct drm_device * dev)
> !drm_core_check_feature(dev, DRIVER_MODESET))
> drm_dma_takedown(dev);
>
> - dev->dev_mapping = NULL;
> mutex_unlock(&dev->struct_mutex);
>
> DRM_DEBUG("lastclose completed\n");
> diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
> index 98cb064..4498d76 100644
> --- a/drivers/gpu/drm/drm_fops.c
> +++ b/drivers/gpu/drm/drm_fops.c
> @@ -141,10 +141,10 @@ int drm_open(struct inode *inode, struct file *filp)
> }
> if (!retcode) {
> mutex_lock(&dev->struct_mutex);
> - if (minor->type == DRM_MINOR_LEGACY) {
> - if (dev->dev_mapping == NULL)
> - dev->dev_mapping = inode->i_mapping;
> - else if (dev->dev_mapping != inode->i_mapping)
> + if (minor->type == DRM_MINOR_LEGACY || minor->type ==
> DRM_MINOR_RENDER) {
> + if (minor->dev_mapping == NULL)
> + minor->dev_mapping = inode->i_mapping;
> + else if (minor->dev_mapping != inode->i_mapping)
> retcode = -ENODEV;
> }
> mutex_unlock(&dev->struct_mutex);
> diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
> index 55cd615..bcd15b0 100644
> --- a/drivers/gpu/drm/drm_vm.c
> +++ b/drivers/gpu/drm/drm_vm.c
> @@ -687,3 +687,12 @@ int drm_mmap(struct file *filp, struct vm_area_struct
> *vma)
> return ret;
> }
> EXPORT_SYMBOL(drm_mmap);
> +
> +void drm_unmap_mapping(struct drm_device *dev, loff_t const holebegin,
> + loff_t const holelen)
> +{
> + if (dev->primary->dev_mapping)
> + unmap_mapping_range(dev->primary->dev_mapping,
> + holebegin, holelen, 1);
> +}
> +EXPORT_SYMBOL(drm_unmap_mapping);
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index 19a06c2..5eb0294 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -1215,10 +1215,9 @@ i915_gem_release_mmap(struct drm_i915_gem_object *obj)
> if (!obj->fault_mappable)
> return;
>
> - if (obj->base.dev->dev_mapping)
> - unmap_mapping_range(obj->base.dev->dev_mapping,
> -
> (loff_t)obj->base.map_list.hash.key<<PAGE_SHIFT,
> - obj->base.size, 1);
> + drm_unmap_mapping(obj->base.dev,
> + (loff_t)obj->base.map_list.hash.key<<PAGE_SHIFT,
> + obj->base.size);
>
> obj->fault_mappable = false;
> }
> diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c
> b/drivers/gpu/drm/nouveau/nouveau_gem.c
> index 7ce3fde..63521af 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_gem.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
> @@ -202,8 +202,8 @@ nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
> struct nouveau_bo *nvbo = NULL;
> int ret = 0;
>
> - if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
> - dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
> + if (unlikely(dev_priv->ttm.bdev.mapping_priv == NULL))
> + dev_priv->ttm.bdev.mapping_priv = (void *)dev;
>
> if (!dev_priv->engine.vram.flags_valid(dev, req->info.tile_flags)) {
> NV_ERROR(dev, "bad page flags: 0x%08x\n",
> req->info.tile_flags);
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c
> b/drivers/gpu/drm/radeon/radeon_object.c
> index 342deac..837c7eb 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -115,8 +115,8 @@ int radeon_bo_create(struct radeon_device *rdev,
>
> size = ALIGN(size, PAGE_SIZE);
>
> - if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
> - rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
> + if (unlikely(rdev->mman.bdev.mapping_priv == NULL)) {
> + rdev->mman.bdev.mapping_priv = (void *)rdev->ddev;
> }
> if (kernel) {
> type = ttm_bo_type_kernel;
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c
> b/drivers/gpu/drm/radeon/radeon_ttm.c
> index f493c64..7bedbf8 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -753,9 +753,9 @@ int radeon_ttm_init(struct radeon_device *rdev)
> }
> DRM_INFO("radeon: %uM of GTT memory ready.\n",
> (unsigned)(rdev->mc.gtt_size / (1024 * 1024)));
> - if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
> - rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
> - }
> +
> + if (unlikely(rdev->mman.bdev.mapping_priv == NULL))
> + rdev->mman.bdev.mapping_priv = (void *)rdev->ddev;
>
> r = radeon_ttm_debugfs_init(rdev);
> if (r) {
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index 7c3a57d..40bc5f6 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -38,6 +38,7 @@
> #include <linux/file.h>
> #include <linux/module.h>
> #include <linux/atomic.h>
> +#include "drm/drm_mem_util.h"
>
> #define TTM_ASSERT_LOCKED(param)
> #define TTM_DEBUG(fmt, arg...)
> @@ -1579,7 +1580,7 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev,
> INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue);
> bdev->nice_mode = true;
> INIT_LIST_HEAD(&bdev->ddestroy);
> - bdev->dev_mapping = NULL;
> + bdev->mapping_priv = NULL;
> bdev->glob = glob;
> bdev->need_dma32 = need_dma32;
> bdev->val_seq = 0;
> @@ -1623,9 +1624,9 @@ void ttm_bo_unmap_virtual_locked(struct
> ttm_buffer_object *bo)
> loff_t offset = (loff_t) bo->addr_space_offset;
> loff_t holelen = ((loff_t) bo->mem.num_pages) << PAGE_SHIFT;
>
> - if (!bdev->dev_mapping)
> + if (!bdev->mapping_priv)
> return;
> - unmap_mapping_range(bdev->dev_mapping, offset, holelen, 1);
> + drm_unmap_mapping(bdev->mapping_priv, offset, holelen);
> ttm_mem_io_free_vm(bo);
> }
>
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> index 1760aba..6a4adc0 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> @@ -770,9 +770,8 @@ static int vmw_driver_open(struct drm_device *dev, struct
> drm_file *file_priv)
>
> file_priv->driver_priv = vmw_fp;
>
> - if (unlikely(dev_priv->bdev.dev_mapping == NULL))
> - dev_priv->bdev.dev_mapping =
> - file_priv->filp->f_path.dentry->d_inode->i_mapping;
> + if (unlikely(dev_priv->bdev.mapping_priv == NULL))
> + dev_priv->bdev.mapping_priv = (void *)dev;
>
> return 0;
>
> diff --git a/drivers/staging/omapdrm/omap_gem.c
> b/drivers/staging/omapdrm/omap_gem.c
> index b7d6f88..22a5f39 100644
> --- a/drivers/staging/omapdrm/omap_gem.c
> +++ b/drivers/staging/omapdrm/omap_gem.c
> @@ -150,13 +150,11 @@ static struct {
> static void evict_entry(struct drm_gem_object *obj,
> enum tiler_fmt fmt, struct usergart_entry *entry)
> {
> - if (obj->dev->dev_mapping) {
> - size_t size = PAGE_SIZE * usergart[fmt].height;
> - loff_t off = mmap_offset(obj) +
> - (entry->obj_pgoff << PAGE_SHIFT);
> - unmap_mapping_range(obj->dev->dev_mapping, off, size, 1);
> - }
> + size_t size = PAGE_SIZE * usergart[fmt].height;
> + loff_t off = mmap_offset(obj) +
> + (entry->obj_pgoff << PAGE_SHIFT);
>
> + drm_unmap_mapping(obj->dev, off, size);
> entry->obj = NULL;
> }
>
> diff --git a/include/drm/drmP.h b/include/drm/drmP.h
> index cfd921f..eeb377a 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -997,6 +997,8 @@ struct drm_minor {
> struct drm_master *master; /* currently active master for this node */
> struct list_head master_list;
> struct drm_mode_group mode_group;
> +
> + struct address_space *dev_mapping;
> };
>
> /* mode specified on the command line */
> @@ -1152,7 +1154,6 @@ struct drm_device {
> unsigned int num_crtcs; /**< Number of CRTCs on this
> device */
> void *dev_private; /**< device private data */
> void *mm_private;
> - struct address_space *dev_mapping;
> struct drm_sigdata sigdata; /**< For block_all_signals */
> sigset_t sigmask;
>
> diff --git a/include/drm/drm_mem_util.h b/include/drm/drm_mem_util.h
> index 6bd325f..820afbb 100644
> --- a/include/drm/drm_mem_util.h
> +++ b/include/drm/drm_mem_util.h
> @@ -62,4 +62,7 @@ static __inline void drm_free_large(void *ptr)
> vfree(ptr);
> }
>
> +struct drm_device;
> +extern void drm_unmap_mapping(struct drm_device *dev, loff_t const holebegin,
> + loff_t const holelen);
> #endif
> diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
> index d43e892..4a05aca 100644
> --- a/include/drm/ttm/ttm_bo_driver.h
> +++ b/include/drm/ttm/ttm_bo_driver.h
> @@ -40,6 +40,7 @@
> #include "linux/spinlock.h"
>
> struct ttm_backend;
> +struct drm_device;
>
> struct ttm_backend_func {
> /**
> @@ -558,7 +559,7 @@ struct ttm_bo_device {
> */
>
> bool nice_mode;
> - struct address_space *dev_mapping;
> + struct drm_device *mapping_priv;
>
> /*
> * Internal protection.
> --
> 1.7.8.5
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
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