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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
27struct 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
71static inline bool is_active(struct msm_gem_object *msm_obj)
72{
73 return msm_obj->gpu != NULL;
74}
75
76static 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 */
96struct msm_gem_submit {
97 struct drm_device *dev;
98 struct msm_gpu *gpu;
99 struct list_head node; /* node in gpu submit_list */
100 struct list_head bo_list;
101 struct ww_acquire_ctx ticket;
102 uint32_t fence;
103 bool valid;
104 unsigned int nr_cmds;
105 unsigned int nr_bos;
106 struct {
107 uint32_t type;
108 uint32_t size; /* in dwords */
109 uint32_t iova;
110 uint32_t idx; /* cmdstream buffer idx in bos[] */
111 } cmd[MAX_CMDS];
112 struct {
113 uint32_t flags;
114 struct msm_gem_object *obj;
115 uint32_t iova;
116 } bos[0];
117};
118
119#endif /* __MSM_GEM_H__ */
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
27struct msm_gem_address_space {
28 const char *name;
29 /* NOTE: mm managed at the page level, size is in # of pages
30 * and position mm_node->start is in # of pages:
31 */
32 struct drm_mm mm;
33 struct msm_mmu *mmu;
34};
35
36struct msm_gem_vma {
37 struct drm_mm_node node;
38 uint64_t iova;
39};
40
41struct msm_gem_object {
42 struct drm_gem_object base;
43
44 uint32_t flags;
45
46 /**
47 * Advice: are the backing pages purgeable?
48 */
49 uint8_t madv;
50
51 /**
52 * count of active vmap'ing
53 */
54 uint8_t vmap_count;
55
56 /* And object is either:
57 * inactive - on priv->inactive_list
58 * active - on one one of the gpu's active_list.. well, at
59 * least for now we don't have (I don't think) hw sync between
60 * 2d and 3d one devices which have both, meaning we need to
61 * block on submit if a bo is already on other ring
62 *
63 */
64 struct list_head mm_list;
65 struct msm_gpu *gpu; /* non-null if active */
66
67 /* Transiently in the process of submit ioctl, objects associated
68 * with the submit are on submit->bo_list.. this only lasts for
69 * the duration of the ioctl, so one bo can never be on multiple
70 * submit lists.
71 */
72 struct list_head submit_entry;
73
74 struct page **pages;
75 struct sg_table *sgt;
76 void *vaddr;
77
78 struct msm_gem_vma domain[NUM_DOMAINS];
79
80 /* normally (resv == &_resv) except for imported bo's */
81 struct reservation_object *resv;
82 struct reservation_object _resv;
83
84 /* For physically contiguous buffers. Used when we don't have
85 * an IOMMU. Also used for stolen/splashscreen buffer.
86 */
87 struct drm_mm_node *vram_node;
88};
89#define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
90
91static inline bool is_active(struct msm_gem_object *msm_obj)
92{
93 return msm_obj->gpu != NULL;
94}
95
96static inline bool is_purgeable(struct msm_gem_object *msm_obj)
97{
98 return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt &&
99 !msm_obj->base.dma_buf && !msm_obj->base.import_attach;
100}
101
102static inline bool is_vunmapable(struct msm_gem_object *msm_obj)
103{
104 return (msm_obj->vmap_count == 0) && msm_obj->vaddr;
105}
106
107/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
108 * associated with the cmdstream submission for synchronization (and
109 * make it easier to unwind when things go wrong, etc). This only
110 * lasts for the duration of the submit-ioctl.
111 */
112struct msm_gem_submit {
113 struct drm_device *dev;
114 struct msm_gpu *gpu;
115 struct list_head node; /* node in gpu submit_list */
116 struct list_head bo_list;
117 struct ww_acquire_ctx ticket;
118 struct dma_fence *fence;
119 struct pid *pid; /* submitting process */
120 bool valid; /* true if no cmdstream patching needed */
121 unsigned int nr_cmds;
122 unsigned int nr_bos;
123 struct {
124 uint32_t type;
125 uint32_t size; /* in dwords */
126 uint64_t iova;
127 uint32_t idx; /* cmdstream buffer idx in bos[] */
128 } *cmd; /* array of size nr_cmds */
129 struct {
130 uint32_t flags;
131 struct msm_gem_object *obj;
132 uint64_t iova;
133 } bos[0];
134};
135
136#endif /* __MSM_GEM_H__ */