272 lines
8.5 KiB
C
272 lines
8.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*/
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#ifndef __MSM_GEM_H__
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#define __MSM_GEM_H__
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#include <linux/kref.h>
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#include <linux/dma-resv.h>
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#include "msm_drv.h"
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/* Additional internal-use only BO flags: */
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#define MSM_BO_STOLEN 0x10000000 /* try to use stolen/splash memory */
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#define MSM_BO_MAP_PRIV 0x20000000 /* use IOMMU_PRIV when mapping */
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struct msm_gem_address_space {
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const char *name;
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/* NOTE: mm managed at the page level, size is in # of pages
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* and position mm_node->start is in # of pages:
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*/
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struct drm_mm mm;
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spinlock_t lock; /* Protects drm_mm node allocation/removal */
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struct msm_mmu *mmu;
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struct kref kref;
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/* For address spaces associated with a specific process, this
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* will be non-NULL:
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*/
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struct pid *pid;
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};
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struct msm_gem_vma {
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struct drm_mm_node node;
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uint64_t iova;
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struct msm_gem_address_space *aspace;
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struct list_head list; /* node in msm_gem_object::vmas */
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bool mapped;
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int inuse;
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};
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struct msm_gem_object {
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struct drm_gem_object base;
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uint32_t flags;
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/**
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* Advice: are the backing pages purgeable?
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*/
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uint8_t madv;
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/**
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* count of active vmap'ing
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*/
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uint8_t vmap_count;
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/* And object is either:
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* inactive - on priv->inactive_list
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* active - on one one of the gpu's active_list.. well, at
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* least for now we don't have (I don't think) hw sync between
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* 2d and 3d one devices which have both, meaning we need to
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* block on submit if a bo is already on other ring
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*
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*/
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struct list_head mm_list;
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/* Transiently in the process of submit ioctl, objects associated
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* with the submit are on submit->bo_list.. this only lasts for
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* the duration of the ioctl, so one bo can never be on multiple
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* submit lists.
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*/
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struct list_head submit_entry;
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struct page **pages;
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struct sg_table *sgt;
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void *vaddr;
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struct list_head vmas; /* list of msm_gem_vma */
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struct llist_node freed;
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/* For physically contiguous buffers. Used when we don't have
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* an IOMMU. Also used for stolen/splashscreen buffer.
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*/
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struct drm_mm_node *vram_node;
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char name[32]; /* Identifier to print for the debugfs files */
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int active_count;
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};
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#define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
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int msm_gem_mmap_obj(struct drm_gem_object *obj,
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struct vm_area_struct *vma);
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int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
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uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj);
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int msm_gem_get_iova(struct drm_gem_object *obj,
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struct msm_gem_address_space *aspace, uint64_t *iova);
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int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj,
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struct msm_gem_address_space *aspace, uint64_t *iova,
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u64 range_start, u64 range_end);
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int msm_gem_get_and_pin_iova_locked(struct drm_gem_object *obj,
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struct msm_gem_address_space *aspace, uint64_t *iova);
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int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
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struct msm_gem_address_space *aspace, uint64_t *iova);
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uint64_t msm_gem_iova(struct drm_gem_object *obj,
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struct msm_gem_address_space *aspace);
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void msm_gem_unpin_iova_locked(struct drm_gem_object *obj,
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struct msm_gem_address_space *aspace);
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void msm_gem_unpin_iova(struct drm_gem_object *obj,
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struct msm_gem_address_space *aspace);
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struct page **msm_gem_get_pages(struct drm_gem_object *obj);
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void msm_gem_put_pages(struct drm_gem_object *obj);
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int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
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struct drm_mode_create_dumb *args);
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int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
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uint32_t handle, uint64_t *offset);
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void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj);
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void *msm_gem_get_vaddr(struct drm_gem_object *obj);
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void *msm_gem_get_vaddr_active(struct drm_gem_object *obj);
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void msm_gem_put_vaddr_locked(struct drm_gem_object *obj);
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void msm_gem_put_vaddr(struct drm_gem_object *obj);
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int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv);
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int msm_gem_sync_object(struct drm_gem_object *obj,
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struct msm_fence_context *fctx, bool exclusive);
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void msm_gem_active_get(struct drm_gem_object *obj, struct msm_gpu *gpu);
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void msm_gem_active_put(struct drm_gem_object *obj);
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int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout);
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int msm_gem_cpu_fini(struct drm_gem_object *obj);
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void msm_gem_free_object(struct drm_gem_object *obj);
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int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
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uint32_t size, uint32_t flags, uint32_t *handle, char *name);
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struct drm_gem_object *msm_gem_new(struct drm_device *dev,
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uint32_t size, uint32_t flags);
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struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev,
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uint32_t size, uint32_t flags);
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void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size,
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uint32_t flags, struct msm_gem_address_space *aspace,
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struct drm_gem_object **bo, uint64_t *iova);
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void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size,
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uint32_t flags, struct msm_gem_address_space *aspace,
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struct drm_gem_object **bo, uint64_t *iova);
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void msm_gem_kernel_put(struct drm_gem_object *bo,
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struct msm_gem_address_space *aspace, bool locked);
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struct drm_gem_object *msm_gem_import(struct drm_device *dev,
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struct dma_buf *dmabuf, struct sg_table *sgt);
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__printf(2, 3)
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void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...);
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#ifdef CONFIG_DEBUG_FS
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void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
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void msm_gem_describe_objects(struct list_head *list, struct seq_file *m);
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#endif
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static inline void
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msm_gem_lock(struct drm_gem_object *obj)
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{
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dma_resv_lock(obj->resv, NULL);
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}
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static inline bool __must_check
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msm_gem_trylock(struct drm_gem_object *obj)
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{
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return dma_resv_trylock(obj->resv);
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}
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static inline int
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msm_gem_lock_interruptible(struct drm_gem_object *obj)
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{
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return dma_resv_lock_interruptible(obj->resv, NULL);
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}
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static inline void
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msm_gem_unlock(struct drm_gem_object *obj)
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{
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dma_resv_unlock(obj->resv);
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}
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static inline bool
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msm_gem_is_locked(struct drm_gem_object *obj)
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{
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return dma_resv_is_locked(obj->resv);
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}
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static inline bool is_active(struct msm_gem_object *msm_obj)
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{
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WARN_ON(!msm_gem_is_locked(&msm_obj->base));
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return msm_obj->active_count;
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}
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static inline bool is_purgeable(struct msm_gem_object *msm_obj)
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{
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return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt &&
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!msm_obj->base.dma_buf && !msm_obj->base.import_attach;
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}
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static inline bool is_vunmapable(struct msm_gem_object *msm_obj)
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{
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WARN_ON(!msm_gem_is_locked(&msm_obj->base));
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return (msm_obj->vmap_count == 0) && msm_obj->vaddr;
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}
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void msm_gem_purge(struct drm_gem_object *obj);
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void msm_gem_vunmap(struct drm_gem_object *obj);
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/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
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* associated with the cmdstream submission for synchronization (and
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* make it easier to unwind when things go wrong, etc). This only
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* lasts for the duration of the submit-ioctl.
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*/
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struct msm_gem_submit {
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struct kref ref;
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struct drm_device *dev;
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struct msm_gpu *gpu;
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struct msm_gem_address_space *aspace;
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struct list_head node; /* node in ring submit list */
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struct list_head bo_list;
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struct ww_acquire_ctx ticket;
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uint32_t seqno; /* Sequence number of the submit on the ring */
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struct dma_fence *fence;
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struct msm_gpu_submitqueue *queue;
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struct pid *pid; /* submitting process */
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bool valid; /* true if no cmdstream patching needed */
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bool in_rb; /* "sudo" mode, copy cmds into RB */
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struct msm_ringbuffer *ring;
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struct msm_file_private *ctx;
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unsigned int nr_cmds;
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unsigned int nr_bos;
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u32 ident; /* A "identifier" for the submit for logging */
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struct {
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uint32_t type;
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uint32_t size; /* in dwords */
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uint64_t iova;
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uint32_t offset;/* in dwords */
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uint32_t idx; /* cmdstream buffer idx in bos[] */
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uint32_t nr_relocs;
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struct drm_msm_gem_submit_reloc *relocs;
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} *cmd; /* array of size nr_cmds */
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struct {
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uint32_t flags;
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union {
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struct msm_gem_object *obj;
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uint32_t handle;
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};
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uint64_t iova;
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} bos[];
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};
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void __msm_gem_submit_destroy(struct kref *kref);
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static inline void msm_gem_submit_get(struct msm_gem_submit *submit)
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{
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kref_get(&submit->ref);
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}
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static inline void msm_gem_submit_put(struct msm_gem_submit *submit)
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{
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kref_put(&submit->ref, __msm_gem_submit_destroy);
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}
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/* helper to determine of a buffer in submit should be dumped, used for both
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* devcoredump and debugfs cmdstream dumping:
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*/
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static inline bool
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should_dump(struct msm_gem_submit *submit, int idx)
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{
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extern bool rd_full;
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return rd_full || (submit->bos[idx].flags & MSM_SUBMIT_BO_DUMP);
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}
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#endif /* __MSM_GEM_H__ */
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