diff options
Diffstat (limited to 'drivers/gpu/nvgpu/os/linux/vgpu/clk_vgpu.c')
-rw-r--r-- | drivers/gpu/nvgpu/os/linux/vgpu/clk_vgpu.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/drivers/gpu/nvgpu/os/linux/vgpu/clk_vgpu.c b/drivers/gpu/nvgpu/os/linux/vgpu/clk_vgpu.c deleted file mode 100644 index 9f6017d3..00000000 --- a/drivers/gpu/nvgpu/os/linux/vgpu/clk_vgpu.c +++ /dev/null | |||
@@ -1,168 +0,0 @@ | |||
1 | /* | ||
2 | * Virtualized GPU Clock Interface | ||
3 | * | ||
4 | * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify it | ||
7 | * under the terms and conditions of the GNU General Public License, | ||
8 | * version 2, as published by the Free Software Foundation. | ||
9 | * | ||
10 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
13 | * more details. | ||
14 | * | ||
15 | * You should have received a copy of the GNU General Public License | ||
16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | |||
19 | #include <nvgpu/vgpu/vgpu.h> | ||
20 | |||
21 | #include "gk20a/gk20a.h" | ||
22 | #include "clk_vgpu.h" | ||
23 | #include "ctrl/ctrlclk.h" | ||
24 | #include "os/linux/platform_gk20a.h" | ||
25 | |||
26 | static unsigned long | ||
27 | vgpu_freq_table[TEGRA_VGPU_GPU_FREQ_TABLE_SIZE]; | ||
28 | |||
29 | static unsigned long vgpu_clk_get_rate(struct gk20a *g, u32 api_domain) | ||
30 | { | ||
31 | struct tegra_vgpu_cmd_msg msg = {}; | ||
32 | struct tegra_vgpu_gpu_clk_rate_params *p = &msg.params.gpu_clk_rate; | ||
33 | int err; | ||
34 | unsigned long ret = 0; | ||
35 | |||
36 | nvgpu_log_fn(g, " "); | ||
37 | |||
38 | switch (api_domain) { | ||
39 | case CTRL_CLK_DOMAIN_GPCCLK: | ||
40 | msg.cmd = TEGRA_VGPU_CMD_GET_GPU_CLK_RATE; | ||
41 | msg.handle = vgpu_get_handle(g); | ||
42 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
43 | err = err ? err : msg.ret; | ||
44 | if (err) | ||
45 | nvgpu_err(g, "%s failed - %d", __func__, err); | ||
46 | else | ||
47 | /* return frequency in Hz */ | ||
48 | ret = p->rate * 1000; | ||
49 | break; | ||
50 | case CTRL_CLK_DOMAIN_PWRCLK: | ||
51 | nvgpu_err(g, "unsupported clock: %u", api_domain); | ||
52 | break; | ||
53 | default: | ||
54 | nvgpu_err(g, "unknown clock: %u", api_domain); | ||
55 | break; | ||
56 | } | ||
57 | |||
58 | return ret; | ||
59 | } | ||
60 | |||
61 | static int vgpu_clk_set_rate(struct gk20a *g, | ||
62 | u32 api_domain, unsigned long rate) | ||
63 | { | ||
64 | struct tegra_vgpu_cmd_msg msg = {}; | ||
65 | struct tegra_vgpu_gpu_clk_rate_params *p = &msg.params.gpu_clk_rate; | ||
66 | int err = -EINVAL; | ||
67 | |||
68 | nvgpu_log_fn(g, " "); | ||
69 | |||
70 | switch (api_domain) { | ||
71 | case CTRL_CLK_DOMAIN_GPCCLK: | ||
72 | msg.cmd = TEGRA_VGPU_CMD_SET_GPU_CLK_RATE; | ||
73 | msg.handle = vgpu_get_handle(g); | ||
74 | |||
75 | /* server dvfs framework requires frequency in kHz */ | ||
76 | p->rate = (u32)(rate / 1000); | ||
77 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
78 | err = err ? err : msg.ret; | ||
79 | if (err) | ||
80 | nvgpu_err(g, "%s failed - %d", __func__, err); | ||
81 | break; | ||
82 | case CTRL_CLK_DOMAIN_PWRCLK: | ||
83 | nvgpu_err(g, "unsupported clock: %u", api_domain); | ||
84 | break; | ||
85 | default: | ||
86 | nvgpu_err(g, "unknown clock: %u", api_domain); | ||
87 | break; | ||
88 | } | ||
89 | |||
90 | return err; | ||
91 | } | ||
92 | |||
93 | static unsigned long vgpu_clk_get_maxrate(struct gk20a *g, u32 api_domain) | ||
94 | { | ||
95 | struct vgpu_priv_data *priv = vgpu_get_priv_data(g); | ||
96 | |||
97 | return priv->constants.max_freq; | ||
98 | } | ||
99 | |||
100 | void vgpu_init_clk_support(struct gk20a *g) | ||
101 | { | ||
102 | g->ops.clk.get_rate = vgpu_clk_get_rate; | ||
103 | g->ops.clk.set_rate = vgpu_clk_set_rate; | ||
104 | g->ops.clk.get_maxrate = vgpu_clk_get_maxrate; | ||
105 | } | ||
106 | |||
107 | long vgpu_clk_round_rate(struct device *dev, unsigned long rate) | ||
108 | { | ||
109 | /* server will handle frequency rounding */ | ||
110 | return rate; | ||
111 | } | ||
112 | |||
113 | int vgpu_clk_get_freqs(struct device *dev, | ||
114 | unsigned long **freqs, int *num_freqs) | ||
115 | { | ||
116 | struct gk20a_platform *platform = gk20a_get_platform(dev); | ||
117 | struct gk20a *g = platform->g; | ||
118 | struct tegra_vgpu_cmd_msg msg = {}; | ||
119 | struct tegra_vgpu_get_gpu_freq_table_params *p = | ||
120 | &msg.params.get_gpu_freq_table; | ||
121 | unsigned int i; | ||
122 | int err; | ||
123 | |||
124 | nvgpu_log_fn(g, " "); | ||
125 | |||
126 | msg.cmd = TEGRA_VGPU_CMD_GET_GPU_FREQ_TABLE; | ||
127 | msg.handle = vgpu_get_handle(g); | ||
128 | |||
129 | p->num_freqs = TEGRA_VGPU_GPU_FREQ_TABLE_SIZE; | ||
130 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
131 | err = err ? err : msg.ret; | ||
132 | if (err) { | ||
133 | nvgpu_err(g, "%s failed - %d", __func__, err); | ||
134 | return err; | ||
135 | } | ||
136 | |||
137 | /* return frequency in Hz */ | ||
138 | for (i = 0; i < p->num_freqs; i++) | ||
139 | vgpu_freq_table[i] = p->freqs[i] * 1000; | ||
140 | |||
141 | *freqs = vgpu_freq_table; | ||
142 | *num_freqs = p->num_freqs; | ||
143 | |||
144 | return 0; | ||
145 | } | ||
146 | |||
147 | int vgpu_clk_cap_rate(struct device *dev, unsigned long rate) | ||
148 | { | ||
149 | struct gk20a_platform *platform = gk20a_get_platform(dev); | ||
150 | struct gk20a *g = platform->g; | ||
151 | struct tegra_vgpu_cmd_msg msg = {}; | ||
152 | struct tegra_vgpu_gpu_clk_rate_params *p = &msg.params.gpu_clk_rate; | ||
153 | int err = 0; | ||
154 | |||
155 | nvgpu_log_fn(g, " "); | ||
156 | |||
157 | msg.cmd = TEGRA_VGPU_CMD_CAP_GPU_CLK_RATE; | ||
158 | msg.handle = vgpu_get_handle(g); | ||
159 | p->rate = (u32)rate; | ||
160 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
161 | err = err ? err : msg.ret; | ||
162 | if (err) { | ||
163 | nvgpu_err(g, "%s failed - %d", __func__, err); | ||
164 | return err; | ||
165 | } | ||
166 | |||
167 | return 0; | ||
168 | } | ||