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 /* And object is either: 33 * inactive - on priv->inactive_list 34 * active - on one one of the gpu's active_list.. well, at 35 * least for now we don't have (I don't think) hw sync between 36 * 2d and 3d one devices which have both, meaning we need to 37 * block on submit if a bo is already on other ring 38 * 39 */ 40 struct list_head mm_list; 41 struct msm_gpu *gpu; /* non-null if active */ 42 uint32_t read_fence, write_fence; 43 44 /* Transiently in the process of submit ioctl, objects associated 45 * with the submit are on submit->bo_list.. this only lasts for 46 * the duration of the ioctl, so one bo can never be on multiple 47 * submit lists. 48 */ 49 struct list_head submit_entry; 50 51 struct page **pages; 52 struct sg_table *sgt; 53 void *vaddr; 54 55 struct { 56 // XXX 57 uint32_t iova; 58 } domain[NUM_DOMAINS]; 59 60 /* normally (resv == &_resv) except for imported bo's */ 61 struct reservation_object *resv; 62 struct reservation_object _resv; 63 64 /* For physically contiguous buffers. Used when we don't have 65 * an IOMMU. Also used for stolen/splashscreen buffer. 66 */ 67 struct drm_mm_node *vram_node; 68 }; 69 #define to_msm_bo(x) container_of(x, struct msm_gem_object, base) 70 71 static inline bool is_active(struct msm_gem_object *msm_obj) 72 { 73 return msm_obj->gpu != NULL; 74 } 75 76 static inline uint32_t msm_gem_fence(struct msm_gem_object *msm_obj, 77 uint32_t op) 78 { 79 uint32_t fence = 0; 80 81 if (op & MSM_PREP_READ) 82 fence = msm_obj->write_fence; 83 if (op & MSM_PREP_WRITE) 84 fence = max(fence, msm_obj->read_fence); 85 86 return fence; 87 } 88 89 #define MAX_CMDS 4 90 91 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, 92 * associated with the cmdstream submission for synchronization (and 93 * make it easier to unwind when things go wrong, etc). This only 94 * lasts for the duration of the submit-ioctl. 95 */ 96 struct msm_gem_submit { 97 struct drm_device *dev; 98 struct msm_gpu *gpu; 99 struct list_head bo_list; 100 struct ww_acquire_ctx ticket; 101 uint32_t fence; 102 bool valid; 103 unsigned int nr_cmds; 104 unsigned int nr_bos; 105 struct { 106 uint32_t type; 107 uint32_t size; /* in dwords */ 108 uint32_t iova; 109 uint32_t idx; /* cmdstream buffer idx in bos[] */ 110 } cmd[MAX_CMDS]; 111 struct { 112 uint32_t flags; 113 struct msm_gem_object *obj; 114 uint32_t iova; 115 } bos[0]; 116 }; 117 118 #endif /* __MSM_GEM_H__ */ 119