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/kref.h> 22 #include <linux/reservation.h> 23 #include "msm_drv.h" 24 25 /* Additional internal-use only BO flags: */ 26 #define MSM_BO_STOLEN 0x10000000 /* try to use stolen/splash memory */ 27 28 struct msm_gem_address_space { 29 const char *name; 30 /* NOTE: mm managed at the page level, size is in # of pages 31 * and position mm_node->start is in # of pages: 32 */ 33 struct drm_mm mm; 34 struct msm_mmu *mmu; 35 struct kref kref; 36 }; 37 38 struct msm_gem_vma { 39 struct drm_mm_node node; 40 uint64_t iova; 41 }; 42 43 struct msm_gem_object { 44 struct drm_gem_object base; 45 46 uint32_t flags; 47 48 /** 49 * Advice: are the backing pages purgeable? 50 */ 51 uint8_t madv; 52 53 /** 54 * count of active vmap'ing 55 */ 56 uint8_t vmap_count; 57 58 /* And object is either: 59 * inactive - on priv->inactive_list 60 * active - on one one of the gpu's active_list.. well, at 61 * least for now we don't have (I don't think) hw sync between 62 * 2d and 3d one devices which have both, meaning we need to 63 * block on submit if a bo is already on other ring 64 * 65 */ 66 struct list_head mm_list; 67 struct msm_gpu *gpu; /* non-null if active */ 68 69 /* Transiently in the process of submit ioctl, objects associated 70 * with the submit are on submit->bo_list.. this only lasts for 71 * the duration of the ioctl, so one bo can never be on multiple 72 * submit lists. 73 */ 74 struct list_head submit_entry; 75 76 struct page **pages; 77 struct sg_table *sgt; 78 void *vaddr; 79 80 struct msm_gem_vma domain[NUM_DOMAINS]; 81 82 /* normally (resv == &_resv) except for imported bo's */ 83 struct reservation_object *resv; 84 struct reservation_object _resv; 85 86 /* For physically contiguous buffers. Used when we don't have 87 * an IOMMU. Also used for stolen/splashscreen buffer. 88 */ 89 struct drm_mm_node *vram_node; 90 }; 91 #define to_msm_bo(x) container_of(x, struct msm_gem_object, base) 92 93 static inline bool is_active(struct msm_gem_object *msm_obj) 94 { 95 return msm_obj->gpu != NULL; 96 } 97 98 static inline bool is_purgeable(struct msm_gem_object *msm_obj) 99 { 100 return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt && 101 !msm_obj->base.dma_buf && !msm_obj->base.import_attach; 102 } 103 104 static inline bool is_vunmapable(struct msm_gem_object *msm_obj) 105 { 106 return (msm_obj->vmap_count == 0) && msm_obj->vaddr; 107 } 108 109 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, 110 * associated with the cmdstream submission for synchronization (and 111 * make it easier to unwind when things go wrong, etc). This only 112 * lasts for the duration of the submit-ioctl. 113 */ 114 struct msm_gem_submit { 115 struct drm_device *dev; 116 struct msm_gpu *gpu; 117 struct list_head node; /* node in gpu submit_list */ 118 struct list_head bo_list; 119 struct ww_acquire_ctx ticket; 120 struct dma_fence *fence; 121 struct pid *pid; /* submitting process */ 122 bool valid; /* true if no cmdstream patching needed */ 123 unsigned int nr_cmds; 124 unsigned int nr_bos; 125 struct { 126 uint32_t type; 127 uint32_t size; /* in dwords */ 128 uint64_t iova; 129 uint32_t idx; /* cmdstream buffer idx in bos[] */ 130 } *cmd; /* array of size nr_cmds */ 131 struct { 132 uint32_t flags; 133 struct msm_gem_object *obj; 134 uint64_t iova; 135 } bos[0]; 136 }; 137 138 #endif /* __MSM_GEM_H__ */ 139