From e4b87d227f9e826c2b2db6b662906550a70a089a Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Fri, 23 Oct 2020 09:51:06 -0700 Subject: drm/msm/gem: Add some _locked() helpers When we cut-over to using dma_resv_lock/etc instead of msm_obj->lock, we'll need these for the submit path (where resv->lock is already held). Signed-off-by: Rob Clark Reviewed-by: Kristian H. Kristensen Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gem.c | 89 +++++++++++++++++++++++++++++++++---------- drivers/gpu/drm/msm/msm_gem.h | 6 +++ 2 files changed, 75 insertions(+), 20 deletions(-) (limited to 'drivers/gpu/drm') diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 5241db47f786..2daa696ec41d 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -434,18 +434,14 @@ static int msm_gem_pin_iova(struct drm_gem_object *obj, msm_obj->sgt, obj->size >> PAGE_SHIFT); } -/* - * get iova and pin it. Should have a matching put - * limits iova to specified range (in pages) - */ -int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, +static int get_and_pin_iova_range_locked(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova, u64 range_start, u64 range_end) { u64 local; int ret; - msm_gem_lock(obj); + WARN_ON(!msm_gem_is_locked(obj)); ret = get_iova_locked(obj, aspace, &local, range_start, range_end); @@ -456,10 +452,32 @@ int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, if (!ret) *iova = local; + return ret; +} + +/* + * get iova and pin it. Should have a matching put + * limits iova to specified range (in pages) + */ +int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, + struct msm_gem_address_space *aspace, uint64_t *iova, + u64 range_start, u64 range_end) +{ + int ret; + + msm_gem_lock(obj); + ret = get_and_pin_iova_range_locked(obj, aspace, iova, range_start, range_end); msm_gem_unlock(obj); + return ret; } +int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, + struct msm_gem_address_space *aspace, uint64_t *iova) +{ + return get_and_pin_iova_range_locked(obj, aspace, iova, 0, U64_MAX); +} + /* get iova and pin it. Should have a matching put */ int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova) @@ -500,21 +518,31 @@ uint64_t msm_gem_iova(struct drm_gem_object *obj, } /* - * Unpin a iova by updating the reference counts. The memory isn't actually - * purged until something else (shrinker, mm_notifier, destroy, etc) decides - * to get rid of it + * Locked variant of msm_gem_unpin_iova() */ -void msm_gem_unpin_iova(struct drm_gem_object *obj, +void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, struct msm_gem_address_space *aspace) { struct msm_gem_vma *vma; - msm_gem_lock(obj); + WARN_ON(!msm_gem_is_locked(obj)); + vma = lookup_vma(obj, aspace); if (!WARN_ON(!vma)) msm_gem_unmap_vma(aspace, vma); +} +/* + * Unpin a iova by updating the reference counts. The memory isn't actually + * purged until something else (shrinker, mm_notifier, destroy, etc) decides + * to get rid of it + */ +void msm_gem_unpin_iova(struct drm_gem_object *obj, + struct msm_gem_address_space *aspace) +{ + msm_gem_lock(obj); + msm_gem_unpin_iova_locked(obj, aspace); msm_gem_unlock(obj); } @@ -553,15 +581,14 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) struct msm_gem_object *msm_obj = to_msm_bo(obj); int ret = 0; + WARN_ON(!msm_gem_is_locked(obj)); + if (obj->import_attach) return ERR_PTR(-ENODEV); - msm_gem_lock(obj); - if (WARN_ON(msm_obj->madv > madv)) { DRM_DEV_ERROR(obj->dev->dev, "Invalid madv state: %u vs %u\n", msm_obj->madv, madv); - msm_gem_unlock(obj); return ERR_PTR(-EBUSY); } @@ -587,20 +614,29 @@ static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) } } - msm_gem_unlock(obj); return msm_obj->vaddr; fail: msm_obj->vmap_count--; - msm_gem_unlock(obj); return ERR_PTR(ret); } -void *msm_gem_get_vaddr(struct drm_gem_object *obj) +void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj) { return get_vaddr(obj, MSM_MADV_WILLNEED); } +void *msm_gem_get_vaddr(struct drm_gem_object *obj) +{ + void *ret; + + msm_gem_lock(obj); + ret = msm_gem_get_vaddr_locked(obj); + msm_gem_unlock(obj); + + return ret; +} + /* * Don't use this! It is for the very special case of dumping * submits from GPU hangs or faults, were the bo may already @@ -609,16 +645,29 @@ void *msm_gem_get_vaddr(struct drm_gem_object *obj) */ void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) { - return get_vaddr(obj, __MSM_MADV_PURGED); + void *ret; + + msm_gem_lock(obj); + ret = get_vaddr(obj, __MSM_MADV_PURGED); + msm_gem_unlock(obj); + + return ret; } -void msm_gem_put_vaddr(struct drm_gem_object *obj) +void msm_gem_put_vaddr_locked(struct drm_gem_object *obj) { struct msm_gem_object *msm_obj = to_msm_bo(obj); - msm_gem_lock(obj); + WARN_ON(!msm_gem_is_locked(obj)); WARN_ON(msm_obj->vmap_count < 1); + msm_obj->vmap_count--; +} + +void msm_gem_put_vaddr(struct drm_gem_object *obj) +{ + msm_gem_lock(obj); + msm_gem_put_vaddr_locked(obj); msm_gem_unlock(obj); } diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index fbad08badf43..d55d5401a2d2 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -103,10 +103,14 @@ int msm_gem_get_iova(struct drm_gem_object *obj, int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova, u64 range_start, u64 range_end); +int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj, + struct msm_gem_address_space *aspace, uint64_t *iova); int msm_gem_get_and_pin_iova(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova); uint64_t msm_gem_iova(struct drm_gem_object *obj, struct msm_gem_address_space *aspace); +void msm_gem_unpin_iova_locked(struct drm_gem_object *obj, + struct msm_gem_address_space *aspace); void msm_gem_unpin_iova(struct drm_gem_object *obj, struct msm_gem_address_space *aspace); struct page **msm_gem_get_pages(struct drm_gem_object *obj); @@ -115,8 +119,10 @@ int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args); int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, uint32_t handle, uint64_t *offset); +void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj); void *msm_gem_get_vaddr(struct drm_gem_object *obj); void *msm_gem_get_vaddr_active(struct drm_gem_object *obj); +void msm_gem_put_vaddr_locked(struct drm_gem_object *obj); void msm_gem_put_vaddr(struct drm_gem_object *obj); int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv); int msm_gem_sync_object(struct drm_gem_object *obj, -- cgit v1.2.3