Add 'qcom/opensource/display-drivers/' from commit '5ff96e683134b356ebe6c37069b4197034502ef9'
git-subtree-dir: qcom/opensource/display-drivers git-subtree-mainline:2d61911ef6git-subtree-split:5ff96e6831Change-Id: repo: https://git.codelinaro.org/clo/la/platform/vendor/opensource/display-drivers tag: DISPLAY.LA.4.0.r2-07600-lanai.0
This commit is contained in:
David Wronek
234
qcom/opensource/display-drivers/msm/msm_gem.h
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234
qcom/opensource/display-drivers/msm/msm_gem.h
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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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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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_KEEPATTRS 0x20000000 /* keep h/w bus attributes */
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#define MSM_BO_EXTBUF 0x40000000 /* indicate BO is an import buffer */
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struct msm_gem_object;
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struct msm_gem_aspace_ops {
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int (*map)(struct msm_gem_address_space *space, struct msm_gem_vma *vma,
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struct sg_table *sgt, int npages, unsigned int flags);
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void (*unmap)(struct msm_gem_address_space *space,
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struct msm_gem_vma *vma, struct sg_table *sgt,
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unsigned int flags);
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void (*destroy)(struct msm_gem_address_space *space);
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void (*add_to_active)(struct msm_gem_address_space *space,
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struct msm_gem_object *obj);
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void (*remove_from_active)(struct msm_gem_address_space *space,
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struct msm_gem_object *obj);
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int (*register_cb)(struct msm_gem_address_space *space,
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void (*cb)(void *cb, bool data),
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void *cb_data);
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int (*unregister_cb)(struct msm_gem_address_space *space,
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void (*cb)(void *cb, bool data),
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void *cb_data);
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};
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struct aspace_client {
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void (*cb)(void *cb, bool data);
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void *cb_data;
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struct list_head list;
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};
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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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bool domain_attached;
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const struct msm_gem_aspace_ops *ops;
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struct drm_device *dev;
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/* list of mapped objects */
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struct list_head active_list;
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/* list of clients */
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struct list_head clients;
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struct mutex list_lock; /* Protects active_list & clients */
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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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struct msm_gpu *gpu; /* non-null if active */
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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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/* normally (resv == &_resv) except for imported bo's */
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struct dma_resv *resv;
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struct dma_resv _resv;
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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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struct mutex lock; /* Protects resources associated with bo */
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struct list_head iova_list;
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struct msm_gem_address_space *aspace;
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bool in_active_list;
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char name[32]; /* Identifier to print for the debugfs files */
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/* Indicates whether object needs to request for
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* new pagetables due to cb switch
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*/
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bool obj_dirty;
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/* iova address and aligned offset */
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uint64_t iova;
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uint32_t offset;
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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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static inline bool is_active(struct msm_gem_object *msm_obj)
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{
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return msm_obj->gpu != NULL;
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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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return (msm_obj->vmap_count == 0) && msm_obj->vaddr;
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}
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/* The shrinker can be triggered while we hold objA->lock, and need
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* to grab objB->lock to purge it. Lockdep just sees these as a single
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* class of lock, so we use subclasses to teach it the difference.
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*
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* OBJ_LOCK_NORMAL is implicit (ie. normal mutex_lock() call), and
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* OBJ_LOCK_SHRINKER is used by shrinker.
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*
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* It is *essential* that we never go down paths that could trigger the
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* shrinker for a purgable object. This is ensured by checking that
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* msm_obj->madv == MSM_MADV_WILLNEED.
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*/
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enum msm_gem_lock {
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OBJ_LOCK_NORMAL,
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OBJ_LOCK_SHRINKER,
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};
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void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass);
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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 drm_device *dev;
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struct msm_gpu *gpu;
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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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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 idx; /* cmdstream buffer idx in bos[] */
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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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struct msm_gem_object *obj;
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uint64_t iova;
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} bos[0];
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};
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/**
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* msm_gem_put_buffer - put gem buffer
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* @gem: pointer to gem buffer object
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*/
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void msm_gem_put_buffer(struct drm_gem_object *gem);
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/**
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* msm_gem_gem_buffer - get a gem buffer
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* @gem: drm gem object
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* @drm_device: pointer to drm device
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* @fb: frame buffer object
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* @align_size: size to align the buffer to
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*/
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int msm_gem_get_buffer(struct drm_gem_object *gem,
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struct drm_device *dev, struct drm_framebuffer *fb,
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uint32_t align_size);
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#endif /* __MSM_GEM_H__ */
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