Commit | Line | Data |
---|---|---|
fb1d9738 JB |
1 | /************************************************************************** |
2 | * | |
2de59d01 | 3 | * Copyright © 2009-2011 VMware, Inc., Palo Alto, CA., USA |
fb1d9738 JB |
4 | * All Rights Reserved. |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | ||
28 | #include "vmwgfx_drv.h" | |
760285e7 DH |
29 | #include <drm/drmP.h> |
30 | #include <drm/ttm/ttm_bo_driver.h> | |
fb1d9738 | 31 | |
6e4dcff3 JB |
32 | #define VMW_PPN_SIZE (sizeof(unsigned long)) |
33 | /* A future safe maximum remap size. */ | |
34 | #define VMW_PPN_PER_REMAP ((31 * 1024) / VMW_PPN_SIZE) | |
d92d9851 TH |
35 | #define DMA_ADDR_INVALID ((dma_addr_t) 0) |
36 | #define DMA_PAGE_INVALID 0UL | |
2de59d01 TH |
37 | |
38 | static int vmw_gmr2_bind(struct vmw_private *dev_priv, | |
d92d9851 | 39 | struct vmw_piter *iter, |
2de59d01 TH |
40 | unsigned long num_pages, |
41 | int gmr_id) | |
42 | { | |
43 | SVGAFifoCmdDefineGMR2 define_cmd; | |
44 | SVGAFifoCmdRemapGMR2 remap_cmd; | |
2de59d01 TH |
45 | uint32_t *cmd; |
46 | uint32_t *cmd_orig; | |
6e4dcff3 JB |
47 | uint32_t define_size = sizeof(define_cmd) + sizeof(*cmd); |
48 | uint32_t remap_num = num_pages / VMW_PPN_PER_REMAP + ((num_pages % VMW_PPN_PER_REMAP) > 0); | |
49 | uint32_t remap_size = VMW_PPN_SIZE * num_pages + (sizeof(remap_cmd) + sizeof(*cmd)) * remap_num; | |
50 | uint32_t remap_pos = 0; | |
51 | uint32_t cmd_size = define_size + remap_size; | |
2de59d01 TH |
52 | uint32_t i; |
53 | ||
6e4dcff3 | 54 | cmd_orig = cmd = vmw_fifo_reserve(dev_priv, cmd_size); |
2de59d01 TH |
55 | if (unlikely(cmd == NULL)) |
56 | return -ENOMEM; | |
57 | ||
58 | define_cmd.gmrId = gmr_id; | |
59 | define_cmd.numPages = num_pages; | |
60 | ||
6e4dcff3 JB |
61 | *cmd++ = SVGA_CMD_DEFINE_GMR2; |
62 | memcpy(cmd, &define_cmd, sizeof(define_cmd)); | |
63 | cmd += sizeof(define_cmd) / sizeof(*cmd); | |
64 | ||
65 | /* | |
66 | * Need to split the command if there are too many | |
67 | * pages that goes into the gmr. | |
68 | */ | |
69 | ||
2de59d01 TH |
70 | remap_cmd.gmrId = gmr_id; |
71 | remap_cmd.flags = (VMW_PPN_SIZE > sizeof(*cmd)) ? | |
72 | SVGA_REMAP_GMR2_PPN64 : SVGA_REMAP_GMR2_PPN32; | |
2de59d01 | 73 | |
6e4dcff3 JB |
74 | while (num_pages > 0) { |
75 | unsigned long nr = min(num_pages, (unsigned long)VMW_PPN_PER_REMAP); | |
76 | ||
77 | remap_cmd.offsetPages = remap_pos; | |
78 | remap_cmd.numPages = nr; | |
2de59d01 | 79 | |
6e4dcff3 JB |
80 | *cmd++ = SVGA_CMD_REMAP_GMR2; |
81 | memcpy(cmd, &remap_cmd, sizeof(remap_cmd)); | |
82 | cmd += sizeof(remap_cmd) / sizeof(*cmd); | |
2de59d01 | 83 | |
6e4dcff3 JB |
84 | for (i = 0; i < nr; ++i) { |
85 | if (VMW_PPN_SIZE <= 4) | |
d92d9851 | 86 | *cmd = vmw_piter_dma_addr(iter) >> PAGE_SHIFT; |
6e4dcff3 | 87 | else |
d92d9851 TH |
88 | *((uint64_t *)cmd) = vmw_piter_dma_addr(iter) >> |
89 | PAGE_SHIFT; | |
2de59d01 | 90 | |
6e4dcff3 | 91 | cmd += VMW_PPN_SIZE / sizeof(*cmd); |
d92d9851 | 92 | vmw_piter_next(iter); |
6e4dcff3 JB |
93 | } |
94 | ||
95 | num_pages -= nr; | |
96 | remap_pos += nr; | |
2de59d01 TH |
97 | } |
98 | ||
6e4dcff3 JB |
99 | BUG_ON(cmd != cmd_orig + cmd_size / sizeof(*cmd)); |
100 | ||
101 | vmw_fifo_commit(dev_priv, cmd_size); | |
2de59d01 TH |
102 | |
103 | return 0; | |
104 | } | |
105 | ||
106 | static void vmw_gmr2_unbind(struct vmw_private *dev_priv, | |
107 | int gmr_id) | |
108 | { | |
109 | SVGAFifoCmdDefineGMR2 define_cmd; | |
110 | uint32_t define_size = sizeof(define_cmd) + 4; | |
111 | uint32_t *cmd; | |
112 | ||
113 | cmd = vmw_fifo_reserve(dev_priv, define_size); | |
114 | if (unlikely(cmd == NULL)) { | |
115 | DRM_ERROR("GMR2 unbind failed.\n"); | |
116 | return; | |
117 | } | |
118 | define_cmd.gmrId = gmr_id; | |
119 | define_cmd.numPages = 0; | |
120 | ||
121 | *cmd++ = SVGA_CMD_DEFINE_GMR2; | |
122 | memcpy(cmd, &define_cmd, sizeof(define_cmd)); | |
123 | ||
124 | vmw_fifo_commit(dev_priv, define_size); | |
125 | } | |
126 | ||
d92d9851 | 127 | |
fb1d9738 | 128 | int vmw_gmr_bind(struct vmw_private *dev_priv, |
d92d9851 | 129 | const struct vmw_sg_table *vsgt, |
135cba0d TH |
130 | unsigned long num_pages, |
131 | int gmr_id) | |
fb1d9738 | 132 | { |
d92d9851 | 133 | struct vmw_piter data_iter; |
fb1d9738 | 134 | |
d92d9851 TH |
135 | vmw_piter_start(&data_iter, vsgt, 0); |
136 | ||
137 | if (unlikely(!vmw_piter_next(&data_iter))) | |
138 | return 0; | |
139 | ||
0d00c488 | 140 | if (unlikely(!(dev_priv->capabilities & SVGA_CAP_GMR2))) |
fb1d9738 JB |
141 | return -EINVAL; |
142 | ||
0d00c488 | 143 | return vmw_gmr2_bind(dev_priv, &data_iter, num_pages, gmr_id); |
fb1d9738 JB |
144 | } |
145 | ||
135cba0d | 146 | |
fb1d9738 JB |
147 | void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id) |
148 | { | |
0d00c488 | 149 | if (likely(dev_priv->capabilities & SVGA_CAP_GMR2)) |
2de59d01 | 150 | vmw_gmr2_unbind(dev_priv, gmr_id); |
fb1d9738 | 151 | } |