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
is_active(struct msm_gem_object * msm_obj)80 static inline bool is_active(struct msm_gem_object *msm_obj)
81 {
82 return msm_obj->gpu != NULL;
83 }
84
is_purgeable(struct msm_gem_object * msm_obj)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
is_vunmapable(struct msm_gem_object * msm_obj)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 /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
97 * associated with the cmdstream submission for synchronization (and
98 * make it easier to unwind when things go wrong, etc). This only
99 * lasts for the duration of the submit-ioctl.
100 */
101 struct msm_gem_submit {
102 struct drm_device *dev;
103 struct msm_gpu *gpu;
104 struct list_head node; /* node in gpu submit_list */
105 struct list_head bo_list;
106 struct ww_acquire_ctx ticket;
107 struct fence *fence;
108 struct pid *pid; /* submitting process */
109 bool valid; /* true if no cmdstream patching needed */
110 unsigned int nr_cmds;
111 unsigned int nr_bos;
112 struct {
113 uint32_t type;
114 uint32_t size; /* in dwords */
115 uint32_t iova;
116 uint32_t idx; /* cmdstream buffer idx in bos[] */
117 } *cmd; /* array of size nr_cmds */
118 struct {
119 uint32_t flags;
120 struct msm_gem_object *obj;
121 uint32_t iova;
122 } bos[0];
123 };
124
125 #endif /* __MSM_GEM_H__ */
126