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_object { 28 struct drm_gem_object base; 29 30 uint32_t flags; 31 32 /** 33 * Advice: are the backing pages purgeable? 34 */ 35 uint8_t madv; 36 37 /** 38 * count of active vmap'ing 39 */ 40 uint8_t vmap_count; 41 42 /* And object is either: 43 * inactive - on priv->inactive_list 44 * active - on one one of the gpu's active_list.. well, at 45 * least for now we don't have (I don't think) hw sync between 46 * 2d and 3d one devices which have both, meaning we need to 47 * block on submit if a bo is already on other ring 48 * 49 */ 50 struct list_head mm_list; 51 struct msm_gpu *gpu; /* non-null if active */ 52 53 /* Transiently in the process of submit ioctl, objects associated 54 * with the submit are on submit->bo_list.. this only lasts for 55 * the duration of the ioctl, so one bo can never be on multiple 56 * submit lists. 57 */ 58 struct list_head submit_entry; 59 60 struct page **pages; 61 struct sg_table *sgt; 62 void *vaddr; 63 64 struct { 65 // XXX 66 uint32_t iova; 67 } domain[NUM_DOMAINS]; 68 69 /* normally (resv == &_resv) except for imported bo's */ 70 struct reservation_object *resv; 71 struct reservation_object _resv; 72 73 /* For physically contiguous buffers. Used when we don't have 74 * an IOMMU. Also used for stolen/splashscreen buffer. 75 */ 76 struct drm_mm_node *vram_node; 77 }; 78 #define to_msm_bo(x) container_of(x, struct msm_gem_object, base) 79 80 static inline bool is_active(struct msm_gem_object *msm_obj) 81 { 82 return msm_obj->gpu != NULL; 83 } 84 85 static inline bool is_purgeable(struct msm_gem_object *msm_obj) 86 { 87 return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt && 88 !msm_obj->base.dma_buf && !msm_obj->base.import_attach; 89 } 90 91 static inline bool is_vunmapable(struct msm_gem_object *msm_obj) 92 { 93 return (msm_obj->vmap_count == 0) && msm_obj->vaddr; 94 } 95 96 #define MAX_CMDS 4 97 98 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, 99 * associated with the cmdstream submission for synchronization (and 100 * make it easier to unwind when things go wrong, etc). This only 101 * lasts for the duration of the submit-ioctl. 102 */ 103 struct msm_gem_submit { 104 struct drm_device *dev; 105 struct msm_gpu *gpu; 106 struct list_head node; /* node in gpu submit_list */ 107 struct list_head bo_list; 108 struct ww_acquire_ctx ticket; 109 struct fence *fence; 110 struct pid *pid; /* submitting process */ 111 bool valid; /* true if no cmdstream patching needed */ 112 unsigned int nr_cmds; 113 unsigned int nr_bos; 114 struct { 115 uint32_t type; 116 uint32_t size; /* in dwords */ 117 uint32_t iova; 118 uint32_t idx; /* cmdstream buffer idx in bos[] */ 119 } cmd[MAX_CMDS]; 120 struct { 121 uint32_t flags; 122 struct msm_gem_object *obj; 123 uint32_t iova; 124 } bos[0]; 125 }; 126 127 #endif /* __MSM_GEM_H__ */ 128