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author | Thomas Gleixner <tglx@linutronix.de> | 2021-09-11 00:38:47 +0200 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2021-09-11 00:38:47 +0200 |
commit | c2f4954c2d3fc4f77b46c67585e17a58df4ba8e4 (patch) | |
tree | 533a2077028e02a851e51ad509a0aa3a9107999f /drivers/gpu/drm/i915/gem/i915_gem_mman.c | |
parent | drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() (diff) | |
parent | Merge tag 'acpi-5.15-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm (diff) | |
download | linux-dev-c2f4954c2d3fc4f77b46c67585e17a58df4ba8e4.tar.xz linux-dev-c2f4954c2d3fc4f77b46c67585e17a58df4ba8e4.zip |
Merge branch 'linus' into smp/urgent
Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be removed.
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_mman.c')
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_mman.c | 107 |
1 files changed, 78 insertions, 29 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index 215326764606..5130e8ed9564 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -19,6 +19,7 @@ #include "i915_gem_mman.h" #include "i915_trace.h" #include "i915_user_extensions.h" +#include "i915_gem_ttm.h" #include "i915_vma.h" static inline bool @@ -624,6 +625,8 @@ mmap_offset_attach(struct drm_i915_gem_object *obj, struct i915_mmap_offset *mmo; int err; + GEM_BUG_ON(obj->ops->mmap_offset || obj->ops->mmap_ops); + mmo = lookup_mmo(obj, mmap_type); if (mmo) goto out; @@ -642,7 +645,8 @@ mmap_offset_attach(struct drm_i915_gem_object *obj, goto insert; /* Attempt to reap some mmap space from dead objects */ - err = intel_gt_retire_requests_timeout(&i915->gt, MAX_SCHEDULE_TIMEOUT); + err = intel_gt_retire_requests_timeout(&i915->gt, MAX_SCHEDULE_TIMEOUT, + NULL); if (err) goto err; @@ -666,40 +670,58 @@ err: } static int -__assign_mmap_offset(struct drm_file *file, - u32 handle, +__assign_mmap_offset(struct drm_i915_gem_object *obj, enum i915_mmap_type mmap_type, - u64 *offset) + u64 *offset, struct drm_file *file) { - struct drm_i915_gem_object *obj; struct i915_mmap_offset *mmo; - int err; - obj = i915_gem_object_lookup(file, handle); - if (!obj) - return -ENOENT; + if (i915_gem_object_never_mmap(obj)) + return -ENODEV; - if (i915_gem_object_never_mmap(obj)) { - err = -ENODEV; - goto out; + if (obj->ops->mmap_offset) { + if (mmap_type != I915_MMAP_TYPE_FIXED) + return -ENODEV; + + *offset = obj->ops->mmap_offset(obj); + return 0; } + if (mmap_type == I915_MMAP_TYPE_FIXED) + return -ENODEV; + if (mmap_type != I915_MMAP_TYPE_GTT && !i915_gem_object_has_struct_page(obj) && - !i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_IOMEM)) { - err = -ENODEV; - goto out; - } + !i915_gem_object_has_iomem(obj)) + return -ENODEV; mmo = mmap_offset_attach(obj, mmap_type, file); - if (IS_ERR(mmo)) { - err = PTR_ERR(mmo); - goto out; - } + if (IS_ERR(mmo)) + return PTR_ERR(mmo); *offset = drm_vma_node_offset_addr(&mmo->vma_node); - err = 0; -out: + return 0; +} + +static int +__assign_mmap_offset_handle(struct drm_file *file, + u32 handle, + enum i915_mmap_type mmap_type, + u64 *offset) +{ + struct drm_i915_gem_object *obj; + int err; + + obj = i915_gem_object_lookup(file, handle); + if (!obj) + return -ENOENT; + + err = i915_gem_object_lock_interruptible(obj, NULL); + if (err) + goto out_put; + err = __assign_mmap_offset(obj, mmap_type, offset, file); + i915_gem_object_unlock(obj); +out_put: i915_gem_object_put(obj); return err; } @@ -712,14 +734,16 @@ i915_gem_dumb_mmap_offset(struct drm_file *file, { enum i915_mmap_type mmap_type; - if (boot_cpu_has(X86_FEATURE_PAT)) + if (HAS_LMEM(to_i915(dev))) + mmap_type = I915_MMAP_TYPE_FIXED; + else if (boot_cpu_has(X86_FEATURE_PAT)) mmap_type = I915_MMAP_TYPE_WC; else if (!i915_ggtt_has_aperture(&to_i915(dev)->ggtt)) return -ENODEV; else mmap_type = I915_MMAP_TYPE_GTT; - return __assign_mmap_offset(file, handle, mmap_type, offset); + return __assign_mmap_offset_handle(file, handle, mmap_type, offset); } /** @@ -783,11 +807,15 @@ i915_gem_mmap_offset_ioctl(struct drm_device *dev, void *data, type = I915_MMAP_TYPE_UC; break; + case I915_MMAP_OFFSET_FIXED: + type = I915_MMAP_TYPE_FIXED; + break; + default: return -EINVAL; } - return __assign_mmap_offset(file, args->handle, type, &args->offset); + return __assign_mmap_offset_handle(file, args->handle, type, &args->offset); } static void vm_open(struct vm_area_struct *vma) @@ -891,8 +919,18 @@ int i915_gem_mmap(struct file *filp, struct vm_area_struct *vma) * destroyed and will be invalid when the vma manager lock * is released. */ - mmo = container_of(node, struct i915_mmap_offset, vma_node); - obj = i915_gem_object_get_rcu(mmo->obj); + if (!node->driver_private) { + mmo = container_of(node, struct i915_mmap_offset, vma_node); + obj = i915_gem_object_get_rcu(mmo->obj); + + GEM_BUG_ON(obj && obj->ops->mmap_ops); + } else { + obj = i915_gem_object_get_rcu + (container_of(node, struct drm_i915_gem_object, + base.vma_node)); + + GEM_BUG_ON(obj && !obj->ops->mmap_ops); + } } drm_vma_offset_unlock_lookup(dev->vma_offset_manager); rcu_read_unlock(); @@ -913,8 +951,7 @@ int i915_gem_mmap(struct file *filp, struct vm_area_struct *vma) return PTR_ERR(anon); } - vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; - vma->vm_private_data = mmo; + vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP | VM_IO; /* * We keep the ref on mmo->obj, not vm_file, but we require @@ -928,6 +965,15 @@ int i915_gem_mmap(struct file *filp, struct vm_area_struct *vma) /* Drop the initial creation reference, the vma is now holding one. */ fput(anon); + if (obj->ops->mmap_ops) { + vma->vm_page_prot = pgprot_decrypted(vm_get_page_prot(vma->vm_flags)); + vma->vm_ops = obj->ops->mmap_ops; + vma->vm_private_data = node->driver_private; + return 0; + } + + vma->vm_private_data = mmo; + switch (mmo->mmap_type) { case I915_MMAP_TYPE_WC: vma->vm_page_prot = @@ -935,6 +981,9 @@ int i915_gem_mmap(struct file *filp, struct vm_area_struct *vma) vma->vm_ops = &vm_ops_cpu; break; + case I915_MMAP_TYPE_FIXED: + GEM_WARN_ON(1); + fallthrough; case I915_MMAP_TYPE_WB: vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); vma->vm_ops = &vm_ops_cpu; |