1 /*
2 * Copyright © 2016 Broadcom
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #ifndef V3D_CHIP_H
25 #define V3D_CHIP_H
26
27 #include <stdbool.h>
28 #include <stdint.h>
29
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33
34 /**
35 * Struct for tracking features of the V3D chip across driver and compiler.
36 */
37 struct v3d_device_info {
38 /** Simple V3D version: major * 10 + minor */
39 uint8_t ver;
40
41 /** V3D revision number */
42 uint8_t rev;
43
44 /** V3D compatitiblity revision number */
45 uint8_t compat_rev;
46
47 /** Maximum number of performance counters for a given V3D version **/
48 uint8_t max_perfcnt;
49
50 /** Size of the VPM, in bytes. */
51 int vpm_size;
52
53 /** NSLC * QUPS from the core's IDENT registers. */
54 int qpu_count;
55
56 /** If the hw has accumulator registers */
57 bool has_accumulators;
58
59 /** Granularity for the Clipper XY Scaling */
60 float clipper_xy_granularity;
61
62 /** The Control List Executor (CLE) pre-fetches V3D_CLE_READAHEAD
63 * bytes from the Control List buffer. The usage of these last bytes
64 * should be avoided or the CLE would pre-fetch the data after the
65 * end of the CL buffer, reporting the kernel "MMU error from client
66 * CLE".
67 */
68 uint32_t cle_readahead;
69
70 /** Minimum size for a buffer storing the Control List Executor (CLE) */
71 uint32_t cle_buffer_min_size;
72 };
73
74 typedef int (*v3d_ioctl_fun)(int fd, unsigned long request, void *arg);
75
76 bool
77 v3d_get_device_info(int fd, struct v3d_device_info* devinfo, v3d_ioctl_fun fun);
78
79 static inline bool
v3d_device_has_draw_index(const struct v3d_device_info * devinfo)80 v3d_device_has_draw_index(const struct v3d_device_info *devinfo)
81 {
82 return devinfo->ver > 71 || (devinfo->ver == 71 && devinfo->rev >= 10);
83 }
84
85 static inline bool
v3d_device_has_unpack_sat(const struct v3d_device_info * devinfo)86 v3d_device_has_unpack_sat(const struct v3d_device_info *devinfo)
87 {
88 return devinfo->ver > 45 || (devinfo->ver == 45 && devinfo->rev >= 7);
89 }
90
91 static inline bool
v3d_device_has_unpack_max0(const struct v3d_device_info * devinfo)92 v3d_device_has_unpack_max0(const struct v3d_device_info *devinfo)
93 {
94 return devinfo->ver > 71 ||
95 (devinfo->ver == 71 &&
96 (devinfo->rev >= 7 ||
97 (devinfo->rev == 6 && devinfo->compat_rev >= 4)));
98 }
99
100 #ifdef __cplusplus
101 }
102 #endif
103
104 #endif
105