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