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