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667ce33e57
We can have various combinations of 64b and 32b address space, ie. 64b CPU but 32b display and gpu, or 64b CPU and GPU but 32b display. So best to decouple the device iova's from mmap offset. Signed-off-by: Rob Clark <robdclark@gmail.com>
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/*
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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/reservation.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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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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struct msm_mmu *mmu;
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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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};
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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 msm_gem_vma domain[NUM_DOMAINS];
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/* normally (resv == &_resv) except for imported bo's */
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struct reservation_object *resv;
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struct reservation_object _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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};
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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_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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return (msm_obj->vmap_count == 0) && msm_obj->vaddr;
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}
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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 gpu submit_list */
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struct list_head bo_list;
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struct ww_acquire_ctx ticket;
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struct dma_fence *fence;
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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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unsigned int nr_cmds;
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unsigned int nr_bos;
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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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uint32_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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uint32_t iova;
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} bos[0];
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};
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#endif /* __MSM_GEM_H__ */
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