1 /* 2 * Copyright (C) 2013 Red Hat 3 * Author: Rob Clark <robdclark@gmail.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published by 7 * the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef __MSM_GEM_H__ 19 #define __MSM_GEM_H__ 20 21 #include <linux/reservation.h> 22 #include "msm_drv.h" 23 24 /* Additional internal-use only BO flags: */ 25 #define MSM_BO_STOLEN 0x10000000 /* try to use stolen/splash memory */ 26 27 struct msm_gem_address_space { 28 const char *name; 29 /* NOTE: mm managed at the page level, size is in # of pages 30 * and position mm_node->start is in # of pages: 31 */ 32 struct drm_mm mm; 33 struct msm_mmu *mmu; 34 }; 35 36 struct msm_gem_vma { 37 struct drm_mm_node node; 38 uint64_t iova; 39 }; 40 41 struct msm_gem_object { 42 struct drm_gem_object base; 43 44 uint32_t flags; 45 46 /** 47 * Advice: are the backing pages purgeable? 48 */ 49 uint8_t madv; 50 51 /** 52 * count of active vmap'ing 53 */ 54 uint8_t vmap_count; 55 56 /* And object is either: 57 * inactive - on priv->inactive_list 58 * active - on one one of the gpu's active_list.. well, at 59 * least for now we don't have (I don't think) hw sync between 60 * 2d and 3d one devices which have both, meaning we need to 61 * block on submit if a bo is already on other ring 62 * 63 */ 64 struct list_head mm_list; 65 struct msm_gpu *gpu; /* non-null if active */ 66 67 /* Transiently in the process of submit ioctl, objects associated 68 * with the submit are on submit->bo_list.. this only lasts for 69 * the duration of the ioctl, so one bo can never be on multiple 70 * submit lists. 71 */ 72 struct list_head submit_entry; 73 74 struct page **pages; 75 struct sg_table *sgt; 76 void *vaddr; 77 78 struct msm_gem_vma domain[NUM_DOMAINS]; 79 80 /* normally (resv == &_resv) except for imported bo's */ 81 struct reservation_object *resv; 82 struct reservation_object _resv; 83 84 /* For physically contiguous buffers. Used when we don't have 85 * an IOMMU. Also used for stolen/splashscreen buffer. 86 */ 87 struct drm_mm_node *vram_node; 88 }; 89 #define to_msm_bo(x) container_of(x, struct msm_gem_object, base) 90 91 static inline bool is_active(struct msm_gem_object *msm_obj) 92 { 93 return msm_obj->gpu != NULL; 94 } 95 96 static inline bool is_purgeable(struct msm_gem_object *msm_obj) 97 { 98 return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt && 99 !msm_obj->base.dma_buf && !msm_obj->base.import_attach; 100 } 101 102 static inline bool is_vunmapable(struct msm_gem_object *msm_obj) 103 { 104 return (msm_obj->vmap_count == 0) && msm_obj->vaddr; 105 } 106 107 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, 108 * associated with the cmdstream submission for synchronization (and 109 * make it easier to unwind when things go wrong, etc). This only 110 * lasts for the duration of the submit-ioctl. 111 */ 112 struct msm_gem_submit { 113 struct drm_device *dev; 114 struct msm_gpu *gpu; 115 struct list_head node; /* node in gpu submit_list */ 116 struct list_head bo_list; 117 struct ww_acquire_ctx ticket; 118 struct dma_fence *fence; 119 struct pid *pid; /* submitting process */ 120 bool valid; /* true if no cmdstream patching needed */ 121 unsigned int nr_cmds; 122 unsigned int nr_bos; 123 struct { 124 uint32_t type; 125 uint32_t size; /* in dwords */ 126 uint64_t iova; 127 uint32_t idx; /* cmdstream buffer idx in bos[] */ 128 } *cmd; /* array of size nr_cmds */ 129 struct { 130 uint32_t flags; 131 struct msm_gem_object *obj; 132 uint64_t iova; 133 } bos[0]; 134 }; 135 136 #endif /* __MSM_GEM_H__ */ 137