aboutsummaryrefslogtreecommitdiffstats
path: root/include/os/linux/vgpu
diff options
context:
space:
mode:
authorJoshua Bakita <bakitajoshua@gmail.com>2023-06-28 18:24:25 -0400
committerJoshua Bakita <bakitajoshua@gmail.com>2023-06-28 18:24:25 -0400
commit01e6fac4d61fdd7fff5433942ec93fc2ea1e4df1 (patch)
tree4ef34501728a087be24f4ba0af90f91486bf780b /include/os/linux/vgpu
parent306a03d18b305e4e573be3b2931978fa10679eb9 (diff)
Include nvgpu headers
These are needed to build on NVIDIA's Jetson boards for the time being. Only a couple structs are required, so it should be fairly easy to remove this dependency at some point in the future.
Diffstat (limited to 'include/os/linux/vgpu')
-rw-r--r--include/os/linux/vgpu/fecs_trace_vgpu.c225
-rw-r--r--include/os/linux/vgpu/gv11b/platform_gv11b_vgpu_tegra.c103
-rw-r--r--include/os/linux/vgpu/platform_vgpu_tegra.c97
-rw-r--r--include/os/linux/vgpu/platform_vgpu_tegra.h24
-rw-r--r--include/os/linux/vgpu/sysfs_vgpu.c143
-rw-r--r--include/os/linux/vgpu/vgpu_ivc.c77
-rw-r--r--include/os/linux/vgpu/vgpu_ivm.c53
-rw-r--r--include/os/linux/vgpu/vgpu_linux.c525
-rw-r--r--include/os/linux/vgpu/vgpu_linux.h68
9 files changed, 1315 insertions, 0 deletions
diff --git a/include/os/linux/vgpu/fecs_trace_vgpu.c b/include/os/linux/vgpu/fecs_trace_vgpu.c
new file mode 100644
index 0000000..02a381e
--- /dev/null
+++ b/include/os/linux/vgpu/fecs_trace_vgpu.c
@@ -0,0 +1,225 @@
1/*
2 * Copyright (c) 2016-2018, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <uapi/linux/nvgpu.h>
18
19#include <nvgpu/kmem.h>
20#include <nvgpu/bug.h>
21#include <nvgpu/enabled.h>
22#include <nvgpu/ctxsw_trace.h>
23#include <nvgpu/vgpu/vgpu_ivm.h>
24#include <nvgpu/vgpu/tegra_vgpu.h>
25#include <nvgpu/vgpu/vgpu.h>
26#include <nvgpu/gk20a.h>
27
28#include "os/linux/os_linux.h"
29#include "gk20a/fecs_trace_gk20a.h"
30#include "vgpu/fecs_trace_vgpu.h"
31
32struct vgpu_fecs_trace {
33 struct tegra_hv_ivm_cookie *cookie;
34 struct nvgpu_ctxsw_ring_header *header;
35 struct nvgpu_gpu_ctxsw_trace_entry *entries;
36 int num_entries;
37 bool enabled;
38 void *buf;
39};
40
41int vgpu_fecs_trace_init(struct gk20a *g)
42{
43 struct device *dev = dev_from_gk20a(g);
44 struct device_node *np = dev->of_node;
45 struct of_phandle_args args;
46 struct vgpu_fecs_trace *vcst;
47 u32 mempool;
48 int err;
49
50 nvgpu_log_fn(g, " ");
51
52 vcst = nvgpu_kzalloc(g, sizeof(*vcst));
53 if (!vcst)
54 return -ENOMEM;
55
56 err = of_parse_phandle_with_fixed_args(np,
57 "mempool-fecs-trace", 1, 0, &args);
58 if (err) {
59 nvgpu_info(g, "does not support fecs trace");
60 goto fail;
61 }
62 __nvgpu_set_enabled(g, NVGPU_SUPPORT_FECS_CTXSW_TRACE, true);
63
64 mempool = args.args[0];
65 vcst->cookie = vgpu_ivm_mempool_reserve(mempool);
66 if (IS_ERR(vcst->cookie)) {
67 nvgpu_info(g,
68 "mempool %u reserve failed", mempool);
69 vcst->cookie = NULL;
70 err = -EINVAL;
71 goto fail;
72 }
73
74 vcst->buf = ioremap_cache(vgpu_ivm_get_ipa(vcst->cookie),
75 vgpu_ivm_get_size(vcst->cookie));
76 if (!vcst->buf) {
77 nvgpu_info(g, "ioremap_cache failed");
78 err = -EINVAL;
79 goto fail;
80 }
81 vcst->header = vcst->buf;
82 vcst->num_entries = vcst->header->num_ents;
83 if (unlikely(vcst->header->ent_size != sizeof(*vcst->entries))) {
84 nvgpu_err(g, "entry size mismatch");
85 goto fail;
86 }
87 vcst->entries = vcst->buf + sizeof(*vcst->header);
88 g->fecs_trace = (struct gk20a_fecs_trace *)vcst;
89
90 return 0;
91fail:
92 iounmap(vcst->buf);
93 if (vcst->cookie)
94 vgpu_ivm_mempool_unreserve(vcst->cookie);
95 nvgpu_kfree(g, vcst);
96 return err;
97}
98
99int vgpu_fecs_trace_deinit(struct gk20a *g)
100{
101 struct vgpu_fecs_trace *vcst = (struct vgpu_fecs_trace *)g->fecs_trace;
102
103 iounmap(vcst->buf);
104 vgpu_ivm_mempool_unreserve(vcst->cookie);
105 nvgpu_kfree(g, vcst);
106 return 0;
107}
108
109int vgpu_fecs_trace_enable(struct gk20a *g)
110{
111 struct vgpu_fecs_trace *vcst = (struct vgpu_fecs_trace *)g->fecs_trace;
112 struct tegra_vgpu_cmd_msg msg = {
113 .cmd = TEGRA_VGPU_CMD_FECS_TRACE_ENABLE,
114 .handle = vgpu_get_handle(g),
115 };
116 int err;
117
118 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
119 err = err ? err : msg.ret;
120 WARN_ON(err);
121 vcst->enabled = !err;
122 return err;
123}
124
125int vgpu_fecs_trace_disable(struct gk20a *g)
126{
127 struct vgpu_fecs_trace *vcst = (struct vgpu_fecs_trace *)g->fecs_trace;
128 struct tegra_vgpu_cmd_msg msg = {
129 .cmd = TEGRA_VGPU_CMD_FECS_TRACE_DISABLE,
130 .handle = vgpu_get_handle(g),
131 };
132 int err;
133
134 vcst->enabled = false;
135 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
136 err = err ? err : msg.ret;
137 WARN_ON(err);
138 return err;
139}
140
141bool vgpu_fecs_trace_is_enabled(struct gk20a *g)
142{
143 struct vgpu_fecs_trace *vcst = (struct vgpu_fecs_trace *)g->fecs_trace;
144
145 return (vcst && vcst->enabled);
146}
147
148int vgpu_fecs_trace_poll(struct gk20a *g)
149{
150 struct tegra_vgpu_cmd_msg msg = {
151 .cmd = TEGRA_VGPU_CMD_FECS_TRACE_POLL,
152 .handle = vgpu_get_handle(g),
153 };
154 int err;
155
156 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
157 err = err ? err : msg.ret;
158 WARN_ON(err);
159 return err;
160}
161
162int vgpu_alloc_user_buffer(struct gk20a *g, void **buf, size_t *size)
163{
164 struct vgpu_fecs_trace *vcst = (struct vgpu_fecs_trace *)g->fecs_trace;
165
166 *buf = vcst->buf;
167 *size = vgpu_ivm_get_size(vcst->cookie);
168 return 0;
169}
170
171int vgpu_free_user_buffer(struct gk20a *g)
172{
173 return 0;
174}
175
176int vgpu_mmap_user_buffer(struct gk20a *g, struct vm_area_struct *vma)
177{
178 struct vgpu_fecs_trace *vcst = (struct vgpu_fecs_trace *)g->fecs_trace;
179 unsigned long size = vgpu_ivm_get_size(vcst->cookie);
180 unsigned long vsize = vma->vm_end - vma->vm_start;
181
182 size = min(size, vsize);
183 size = round_up(size, PAGE_SIZE);
184
185 return remap_pfn_range(vma, vma->vm_start,
186 vgpu_ivm_get_ipa(vcst->cookie) >> PAGE_SHIFT,
187 size,
188 vma->vm_page_prot);
189}
190
191#ifdef CONFIG_GK20A_CTXSW_TRACE
192int vgpu_fecs_trace_max_entries(struct gk20a *g,
193 struct nvgpu_gpu_ctxsw_trace_filter *filter)
194{
195 struct vgpu_fecs_trace *vcst = (struct vgpu_fecs_trace *)g->fecs_trace;
196
197 return vcst->header->num_ents;
198}
199
200#if NVGPU_CTXSW_FILTER_SIZE != TEGRA_VGPU_FECS_TRACE_FILTER_SIZE
201#error "FECS trace filter size mismatch!"
202#endif
203
204int vgpu_fecs_trace_set_filter(struct gk20a *g,
205 struct nvgpu_gpu_ctxsw_trace_filter *filter)
206{
207 struct tegra_vgpu_cmd_msg msg = {
208 .cmd = TEGRA_VGPU_CMD_FECS_TRACE_SET_FILTER,
209 .handle = vgpu_get_handle(g),
210 };
211 struct tegra_vgpu_fecs_trace_filter *p = &msg.params.fecs_trace_filter;
212 int err;
213
214 memcpy(&p->tag_bits, &filter->tag_bits, sizeof(p->tag_bits));
215 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
216 err = err ? err : msg.ret;
217 WARN_ON(err);
218 return err;
219}
220
221void vgpu_fecs_trace_data_update(struct gk20a *g)
222{
223 gk20a_ctxsw_trace_wake_up(g, 0);
224}
225#endif /* CONFIG_GK20A_CTXSW_TRACE */
diff --git a/include/os/linux/vgpu/gv11b/platform_gv11b_vgpu_tegra.c b/include/os/linux/vgpu/gv11b/platform_gv11b_vgpu_tegra.c
new file mode 100644
index 0000000..0304bcc
--- /dev/null
+++ b/include/os/linux/vgpu/gv11b/platform_gv11b_vgpu_tegra.c
@@ -0,0 +1,103 @@
1/*
2 * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <linux/platform_device.h>
18
19#include <nvgpu/nvhost.h>
20#include <nvgpu/gk20a.h>
21
22#include "vgpu/clk_vgpu.h"
23#include "os/linux/platform_gk20a.h"
24#include "os/linux/os_linux.h"
25#include "os/linux/vgpu/vgpu_linux.h"
26#include "os/linux/vgpu/platform_vgpu_tegra.h"
27
28static int gv11b_vgpu_probe(struct device *dev)
29{
30 struct platform_device *pdev = to_platform_device(dev);
31 struct gk20a_platform *platform = dev_get_drvdata(dev);
32 struct resource *r;
33 void __iomem *regs;
34 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(platform->g);
35 struct gk20a *g = platform->g;
36 int ret;
37
38 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "usermode");
39 if (!r) {
40 nvgpu_err(g, "failed to get usermode regs");
41 return -ENXIO;
42 }
43 regs = devm_ioremap_resource(dev, r);
44 if (IS_ERR(regs)) {
45 nvgpu_err(g, "failed to map usermode regs");
46 return PTR_ERR(regs);
47 }
48 l->usermode_regs = regs;
49
50#ifdef CONFIG_TEGRA_GK20A_NVHOST
51 ret = nvgpu_get_nvhost_dev(g);
52 if (ret) {
53 l->usermode_regs = NULL;
54 return ret;
55 }
56
57 ret = nvgpu_nvhost_syncpt_unit_interface_get_aperture(g->nvhost_dev,
58 &g->syncpt_unit_base,
59 &g->syncpt_unit_size);
60 if (ret) {
61 nvgpu_err(g, "Failed to get syncpt interface");
62 return -ENOSYS;
63 }
64 g->syncpt_size = nvgpu_nvhost_syncpt_unit_interface_get_byte_offset(1);
65 nvgpu_info(g, "syncpt_unit_base %llx syncpt_unit_size %zx size %x\n",
66 g->syncpt_unit_base, g->syncpt_unit_size, g->syncpt_size);
67#endif
68 vgpu_init_clk_support(platform->g);
69
70 return 0;
71}
72
73struct gk20a_platform gv11b_vgpu_tegra_platform = {
74 .has_syncpoints = true,
75
76 /* power management configuration */
77 .can_railgate_init = false,
78 .can_elpg_init = false,
79 .enable_slcg = false,
80 .enable_blcg = false,
81 .enable_elcg = false,
82 .enable_elpg = false,
83 .enable_aelpg = false,
84 .can_slcg = false,
85 .can_blcg = false,
86 .can_elcg = false,
87
88 .ch_wdt_timeout_ms = 5000,
89
90 .probe = gv11b_vgpu_probe,
91
92 .clk_round_rate = vgpu_plat_clk_round_rate,
93 .get_clk_freqs = vgpu_plat_clk_get_freqs,
94
95 /* frequency scaling configuration */
96 .devfreq_governor = "userspace",
97
98 .virtual_dev = true,
99
100 /* power management callbacks */
101 .suspend = vgpu_tegra_suspend,
102 .resume = vgpu_tegra_resume,
103};
diff --git a/include/os/linux/vgpu/platform_vgpu_tegra.c b/include/os/linux/vgpu/platform_vgpu_tegra.c
new file mode 100644
index 0000000..948323e
--- /dev/null
+++ b/include/os/linux/vgpu/platform_vgpu_tegra.c
@@ -0,0 +1,97 @@
1/*
2 * Tegra Virtualized GPU Platform Interface
3 *
4 * Copyright (c) 2014-2018, 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/nvhost.h>
20#include <nvgpu/gk20a.h>
21
22#include "os/linux/platform_gk20a.h"
23#include "vgpu/clk_vgpu.h"
24#include "vgpu_linux.h"
25
26static int gk20a_tegra_probe(struct device *dev)
27{
28#ifdef CONFIG_TEGRA_GK20A_NVHOST
29 struct gk20a_platform *platform = dev_get_drvdata(dev);
30 int ret;
31
32 ret = nvgpu_get_nvhost_dev(platform->g);
33 if (ret)
34 return ret;
35
36 vgpu_init_clk_support(platform->g);
37 return 0;
38#else
39 return 0;
40#endif
41}
42
43long vgpu_plat_clk_round_rate(struct device *dev, unsigned long rate)
44{
45 /* server will handle frequency rounding */
46 return rate;
47}
48
49int vgpu_plat_clk_get_freqs(struct device *dev, unsigned long **freqs,
50 int *num_freqs)
51{
52 struct gk20a_platform *platform = gk20a_get_platform(dev);
53 struct gk20a *g = platform->g;
54
55 return vgpu_clk_get_freqs(g, freqs, num_freqs);
56}
57
58int vgpu_plat_clk_cap_rate(struct device *dev, unsigned long rate)
59{
60 struct gk20a_platform *platform = gk20a_get_platform(dev);
61 struct gk20a *g = platform->g;
62
63 return vgpu_clk_cap_rate(g, rate);
64}
65
66struct gk20a_platform vgpu_tegra_platform = {
67 .has_syncpoints = true,
68 .aggressive_sync_destroy_thresh = 64,
69
70 /* power management configuration */
71 .can_railgate_init = false,
72 .can_elpg_init = false,
73 .enable_slcg = false,
74 .enable_blcg = false,
75 .enable_elcg = false,
76 .enable_elpg = false,
77 .enable_aelpg = false,
78 .can_slcg = false,
79 .can_blcg = false,
80 .can_elcg = false,
81
82 .ch_wdt_timeout_ms = 5000,
83
84 .probe = gk20a_tegra_probe,
85
86 .clk_round_rate = vgpu_plat_clk_round_rate,
87 .get_clk_freqs = vgpu_plat_clk_get_freqs,
88
89 /* frequency scaling configuration */
90 .devfreq_governor = "userspace",
91
92 .virtual_dev = true,
93
94 /* power management callbacks */
95 .suspend = vgpu_tegra_suspend,
96 .resume = vgpu_tegra_resume,
97};
diff --git a/include/os/linux/vgpu/platform_vgpu_tegra.h b/include/os/linux/vgpu/platform_vgpu_tegra.h
new file mode 100644
index 0000000..fef346d
--- /dev/null
+++ b/include/os/linux/vgpu/platform_vgpu_tegra.h
@@ -0,0 +1,24 @@
1/*
2 * Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#ifndef _VGPU_PLATFORM_H_
18#define _VGPU_PLATFORM_H_
19
20long vgpu_plat_clk_round_rate(struct device *dev, unsigned long rate);
21int vgpu_plat_clk_get_freqs(struct device *dev, unsigned long **freqs,
22 int *num_freqs);
23int vgpu_plat_clk_cap_rate(struct device *dev, unsigned long rate);
24#endif
diff --git a/include/os/linux/vgpu/sysfs_vgpu.c b/include/os/linux/vgpu/sysfs_vgpu.c
new file mode 100644
index 0000000..ade5d82
--- /dev/null
+++ b/include/os/linux/vgpu/sysfs_vgpu.c
@@ -0,0 +1,143 @@
1/*
2 * Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <linux/device.h>
18#include <nvgpu/vgpu/vgpu.h>
19
20#include "os/linux/platform_gk20a.h"
21#include "os/linux/os_linux.h"
22#include "vgpu/ecc_vgpu.h"
23
24static ssize_t vgpu_load_show(struct device *dev,
25 struct device_attribute *attr,
26 char *buf)
27{
28 struct gk20a *g = get_gk20a(dev);
29 struct tegra_vgpu_cmd_msg msg = {0};
30 struct tegra_vgpu_gpu_load_params *p = &msg.params.gpu_load;
31 int err;
32
33 msg.cmd = TEGRA_VGPU_CMD_GET_GPU_LOAD;
34 msg.handle = vgpu_get_handle(g);
35 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
36 if (err)
37 return err;
38
39 return snprintf(buf, PAGE_SIZE, "%u\n", p->load);
40}
41static DEVICE_ATTR(load, S_IRUGO, vgpu_load_show, NULL);
42
43static ssize_t vgpu_ecc_stat_show(struct device *dev,
44 struct device_attribute *attr,
45 char *buf)
46{
47 struct gk20a *g = get_gk20a(dev);
48 struct tegra_vgpu_cmd_msg msg = {0};
49 struct tegra_vgpu_ecc_counter_params *p = &msg.params.ecc_counter;
50 struct dev_ext_attribute *ext_attr = container_of(attr,
51 struct dev_ext_attribute, attr);
52 struct vgpu_ecc_stat *ecc_stat = ext_attr->var;
53 int err;
54
55 p->ecc_id = ecc_stat->ecc_id;
56
57 msg.cmd = TEGRA_VGPU_CMD_GET_ECC_COUNTER_VALUE;
58 msg.handle = vgpu_get_handle(g);
59 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
60 err = err ? err : msg.ret;
61 if (unlikely(err)) {
62 nvgpu_err(g, "ecc: cannot get ECC counter value: %d", err);
63 return err;
64 }
65
66 return snprintf(buf, PAGE_SIZE, "%u\n", p->value);
67}
68
69static int vgpu_create_ecc_sysfs(struct device *dev)
70{
71 struct gk20a *g = get_gk20a(dev);
72 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
73 struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
74 struct vgpu_ecc_stat *stats;
75 struct dev_ext_attribute *attrs;
76 int err, i, count;
77
78 err = vgpu_ecc_get_info(g);
79 if (unlikely(err)) {
80 nvgpu_err(g, "ecc: cannot get ECC info: %d", err);
81 return err;
82 }
83
84 stats = priv->ecc_stats;
85 count = priv->ecc_stats_count;
86
87 attrs = nvgpu_kzalloc(g, count * sizeof(*attrs));
88 if (unlikely(!attrs)) {
89 nvgpu_err(g, "ecc: no memory");
90 vgpu_ecc_remove_info(g);
91 return -ENOMEM;
92 }
93
94 for (i = 0; i < count; i++) {
95 sysfs_attr_init(&attrs[i].attr.attr);
96 attrs[i].attr.attr.name = stats[i].name;
97 attrs[i].attr.attr.mode = VERIFY_OCTAL_PERMISSIONS(S_IRUGO);
98 attrs[i].attr.show = vgpu_ecc_stat_show;
99 attrs[i].attr.store = NULL;
100 attrs[i].var = &stats[i];
101
102 err = device_create_file(dev, &attrs[i].attr);
103 if (unlikely(err)) {
104 nvgpu_warn(g, "ecc: cannot create file \"%s\": %d",
105 stats[i].name, err);
106 }
107 }
108
109 l->ecc_attrs = attrs;
110 return 0;
111}
112
113static void vgpu_remove_ecc_sysfs(struct device *dev)
114{
115 struct gk20a *g = get_gk20a(dev);
116 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
117 struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
118 int i;
119
120 if (l->ecc_attrs) {
121 for (i = 0; i < priv->ecc_stats_count; i++)
122 device_remove_file(dev, &l->ecc_attrs[i].attr);
123
124 nvgpu_kfree(g, l->ecc_attrs);
125 l->ecc_attrs = NULL;
126 }
127
128 vgpu_ecc_remove_info(g);
129}
130
131void vgpu_create_sysfs(struct device *dev)
132{
133 if (device_create_file(dev, &dev_attr_load))
134 dev_err(dev, "Failed to create vgpu sysfs attributes!\n");
135
136 vgpu_create_ecc_sysfs(dev);
137}
138
139void vgpu_remove_sysfs(struct device *dev)
140{
141 device_remove_file(dev, &dev_attr_load);
142 vgpu_remove_ecc_sysfs(dev);
143}
diff --git a/include/os/linux/vgpu/vgpu_ivc.c b/include/os/linux/vgpu/vgpu_ivc.c
new file mode 100644
index 0000000..950f0d4
--- /dev/null
+++ b/include/os/linux/vgpu/vgpu_ivc.c
@@ -0,0 +1,77 @@
1/*
2 * Copyright (c) 2018, NVIDIA Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <nvgpu/types.h>
18#include <linux/tegra_gr_comm.h>
19
20#include "os/linux/os_linux.h"
21
22int vgpu_ivc_init(struct gk20a *g, u32 elems,
23 const size_t *queue_sizes, u32 queue_start, u32 num_queues)
24{
25 struct platform_device *pdev = to_platform_device(dev_from_gk20a(g));
26
27 return tegra_gr_comm_init(pdev, elems, queue_sizes, queue_start,
28 num_queues);
29}
30
31void vgpu_ivc_deinit(u32 queue_start, u32 num_queues)
32{
33 tegra_gr_comm_deinit(queue_start, num_queues);
34}
35
36void vgpu_ivc_release(void *handle)
37{
38 tegra_gr_comm_release(handle);
39}
40
41u32 vgpu_ivc_get_server_vmid(void)
42{
43 return tegra_gr_comm_get_server_vmid();
44}
45
46int vgpu_ivc_recv(u32 index, void **handle, void **data,
47 size_t *size, u32 *sender)
48{
49 return tegra_gr_comm_recv(index, handle, data, size, sender);
50}
51
52int vgpu_ivc_send(u32 peer, u32 index, void *data, size_t size)
53{
54 return tegra_gr_comm_send(peer, index, data, size);
55}
56
57int vgpu_ivc_sendrecv(u32 peer, u32 index, void **handle,
58 void **data, size_t *size)
59{
60 return tegra_gr_comm_sendrecv(peer, index, handle, data, size);
61}
62
63u32 vgpu_ivc_get_peer_self(void)
64{
65 return TEGRA_GR_COMM_ID_SELF;
66}
67
68void *vgpu_ivc_oob_get_ptr(u32 peer, u32 index, void **ptr,
69 size_t *size)
70{
71 return tegra_gr_comm_oob_get_ptr(peer, index, ptr, size);
72}
73
74void vgpu_ivc_oob_put_ptr(void *handle)
75{
76 tegra_gr_comm_oob_put_ptr(handle);
77}
diff --git a/include/os/linux/vgpu/vgpu_ivm.c b/include/os/linux/vgpu/vgpu_ivm.c
new file mode 100644
index 0000000..bbd444d
--- /dev/null
+++ b/include/os/linux/vgpu/vgpu_ivm.c
@@ -0,0 +1,53 @@
1/*
2 * Copyright (c) 2018, NVIDIA Corporation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <nvgpu/vgpu/vgpu_ivm.h>
18
19#include <linux/tegra-ivc.h>
20
21#include "os/linux/os_linux.h"
22
23struct tegra_hv_ivm_cookie *vgpu_ivm_mempool_reserve(unsigned int id)
24{
25 return tegra_hv_mempool_reserve(id);
26}
27
28int vgpu_ivm_mempool_unreserve(struct tegra_hv_ivm_cookie *cookie)
29{
30 return tegra_hv_mempool_unreserve(cookie);
31}
32
33u64 vgpu_ivm_get_ipa(struct tegra_hv_ivm_cookie *cookie)
34{
35 return cookie->ipa;
36}
37
38u64 vgpu_ivm_get_size(struct tegra_hv_ivm_cookie *cookie)
39{
40 return cookie->size;
41}
42
43void *vgpu_ivm_mempool_map(struct tegra_hv_ivm_cookie *cookie)
44{
45 return ioremap_cache(vgpu_ivm_get_ipa(cookie),
46 vgpu_ivm_get_size(cookie));
47}
48
49void vgpu_ivm_mempool_unmap(struct tegra_hv_ivm_cookie *cookie,
50 void *addr)
51{
52 iounmap(addr);
53}
diff --git a/include/os/linux/vgpu/vgpu_linux.c b/include/os/linux/vgpu/vgpu_linux.c
new file mode 100644
index 0000000..80bcfff
--- /dev/null
+++ b/include/os/linux/vgpu/vgpu_linux.c
@@ -0,0 +1,525 @@
1/*
2 * Virtualized GPU for Linux
3 *
4 * Copyright (c) 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 <linux/mm.h>
20#include <linux/slab.h>
21#include <linux/dma-mapping.h>
22#include <linux/pm_runtime.h>
23#include <linux/pm_qos.h>
24#include <linux/platform_device.h>
25#include <soc/tegra/chip-id.h>
26
27#include <nvgpu/kmem.h>
28#include <nvgpu/bug.h>
29#include <nvgpu/enabled.h>
30#include <nvgpu/debug.h>
31#include <nvgpu/soc.h>
32#include <nvgpu/ctxsw_trace.h>
33#include <nvgpu/defaults.h>
34#include <nvgpu/ltc.h>
35#include <nvgpu/channel.h>
36#include <nvgpu/clk_arb.h>
37
38#include "vgpu_linux.h"
39#include "vgpu/fecs_trace_vgpu.h"
40#include "vgpu/clk_vgpu.h"
41#include "gk20a/regops_gk20a.h"
42#include "gm20b/hal_gm20b.h"
43
44#include "os/linux/module.h"
45#include "os/linux/os_linux.h"
46#include "os/linux/ioctl.h"
47#include "os/linux/scale.h"
48#include "os/linux/driver_common.h"
49#include "os/linux/platform_gk20a.h"
50#include "os/linux/vgpu/platform_vgpu_tegra.h"
51
52struct vgpu_priv_data *vgpu_get_priv_data(struct gk20a *g)
53{
54 struct gk20a_platform *plat = gk20a_get_platform(dev_from_gk20a(g));
55
56 return (struct vgpu_priv_data *)plat->vgpu_priv;
57}
58
59static void vgpu_remove_support(struct gk20a *g)
60{
61 vgpu_remove_support_common(g);
62}
63
64static void vgpu_init_vars(struct gk20a *g, struct gk20a_platform *platform)
65{
66 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
67 struct vgpu_priv_data *priv = vgpu_get_priv_data(g);
68
69 nvgpu_mutex_init(&g->power_lock);
70 nvgpu_mutex_init(&g->ctxsw_disable_lock);
71 nvgpu_mutex_init(&g->clk_arb_enable_lock);
72 nvgpu_mutex_init(&g->cg_pg_lock);
73
74 nvgpu_mutex_init(&priv->vgpu_clk_get_freq_lock);
75
76 nvgpu_mutex_init(&l->ctrl.privs_lock);
77 nvgpu_init_list_node(&l->ctrl.privs);
78
79 l->regs_saved = l->regs;
80 l->bar1_saved = l->bar1;
81
82 nvgpu_atomic_set(&g->clk_arb_global_nr, 0);
83
84 g->aggressive_sync_destroy = platform->aggressive_sync_destroy;
85 g->aggressive_sync_destroy_thresh = platform->aggressive_sync_destroy_thresh;
86 __nvgpu_set_enabled(g, NVGPU_HAS_SYNCPOINTS, platform->has_syncpoints);
87 g->ptimer_src_freq = platform->ptimer_src_freq;
88 __nvgpu_set_enabled(g, NVGPU_CAN_RAILGATE, platform->can_railgate_init);
89 g->railgate_delay = platform->railgate_delay_init;
90
91 __nvgpu_set_enabled(g, NVGPU_MM_UNIFY_ADDRESS_SPACES,
92 platform->unify_address_spaces);
93}
94
95static int vgpu_init_support(struct platform_device *pdev)
96{
97 struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
98 struct gk20a *g = get_gk20a(&pdev->dev);
99 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
100 void __iomem *regs;
101 int err = 0;
102
103 if (!r) {
104 nvgpu_err(g, "failed to get gk20a bar1");
105 err = -ENXIO;
106 goto fail;
107 }
108
109 if (r->name && !strcmp(r->name, "/vgpu")) {
110 regs = devm_ioremap_resource(&pdev->dev, r);
111 if (IS_ERR(regs)) {
112 nvgpu_err(g, "failed to remap gk20a bar1");
113 err = PTR_ERR(regs);
114 goto fail;
115 }
116 l->bar1 = regs;
117 l->bar1_mem = r;
118 }
119
120 nvgpu_mutex_init(&g->dbg_sessions_lock);
121 nvgpu_mutex_init(&g->client_lock);
122
123 nvgpu_init_list_node(&g->profiler_objects);
124
125 g->dbg_regops_tmp_buf = nvgpu_kzalloc(g, SZ_4K);
126 if (!g->dbg_regops_tmp_buf) {
127 nvgpu_err(g, "couldn't allocate regops tmp buf");
128 return -ENOMEM;
129 }
130 g->dbg_regops_tmp_buf_ops =
131 SZ_4K / sizeof(g->dbg_regops_tmp_buf[0]);
132
133 g->remove_support = vgpu_remove_support;
134 return 0;
135
136 fail:
137 vgpu_remove_support(g);
138 return err;
139}
140
141int vgpu_pm_prepare_poweroff(struct device *dev)
142{
143 struct gk20a *g = get_gk20a(dev);
144 int ret = 0;
145
146 nvgpu_log_fn(g, " ");
147
148 nvgpu_mutex_acquire(&g->power_lock);
149
150 if (!g->power_on)
151 goto done;
152
153 if (g->ops.fifo.channel_suspend)
154 ret = g->ops.fifo.channel_suspend(g);
155 if (ret)
156 goto done;
157
158 g->power_on = false;
159 done:
160 nvgpu_mutex_release(&g->power_lock);
161
162 return ret;
163}
164
165int vgpu_pm_finalize_poweron(struct device *dev)
166{
167 struct gk20a *g = get_gk20a(dev);
168 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
169 int err = 0;
170
171 nvgpu_log_fn(g, " ");
172
173 nvgpu_mutex_acquire(&g->power_lock);
174
175 if (g->power_on)
176 goto done;
177
178 g->power_on = true;
179
180 vgpu_detect_chip(g);
181 err = vgpu_init_hal(g);
182 if (err)
183 goto done;
184
185 if (g->ops.ltc.init_fs_state)
186 g->ops.ltc.init_fs_state(g);
187
188 err = nvgpu_init_ltc_support(g);
189 if (err) {
190 nvgpu_err(g, "failed to init ltc");
191 goto done;
192 }
193
194 err = vgpu_init_mm_support(g);
195 if (err) {
196 nvgpu_err(g, "failed to init gk20a mm");
197 goto done;
198 }
199
200 err = vgpu_init_fifo_support(g);
201 if (err) {
202 nvgpu_err(g, "failed to init gk20a fifo");
203 goto done;
204 }
205
206 err = vgpu_init_gr_support(g);
207 if (err) {
208 nvgpu_err(g, "failed to init gk20a gr");
209 goto done;
210 }
211
212 err = nvgpu_clk_arb_init_arbiter(g);
213 if (err) {
214 nvgpu_err(g, "failed to init clk arb");
215 goto done;
216 }
217
218 err = g->ops.chip_init_gpu_characteristics(g);
219 if (err) {
220 nvgpu_err(g, "failed to init gk20a gpu characteristics");
221 goto done;
222 }
223
224 err = nvgpu_finalize_poweron_linux(l);
225 if (err)
226 goto done;
227
228#ifdef CONFIG_GK20A_CTXSW_TRACE
229 gk20a_ctxsw_trace_init(g);
230#endif
231 gk20a_sched_ctrl_init(g);
232 gk20a_channel_resume(g);
233
234 g->sw_ready = true;
235
236done:
237 if (err)
238 g->power_on = false;
239
240 nvgpu_mutex_release(&g->power_lock);
241 return err;
242}
243
244static int vgpu_qos_notify(struct notifier_block *nb,
245 unsigned long n, void *data)
246{
247 struct gk20a_scale_profile *profile =
248 container_of(nb, struct gk20a_scale_profile,
249 qos_notify_block);
250 struct gk20a *g = get_gk20a(profile->dev);
251 u32 max_freq;
252 int err;
253
254 nvgpu_log_fn(g, " ");
255
256 max_freq = (u32)pm_qos_read_max_bound(PM_QOS_GPU_FREQ_BOUNDS);
257 err = vgpu_plat_clk_cap_rate(profile->dev, max_freq);
258 if (err)
259 nvgpu_err(g, "%s failed, err=%d", __func__, err);
260
261 return NOTIFY_OK; /* need notify call further */
262}
263
264static int vgpu_pm_qos_init(struct device *dev)
265{
266 struct gk20a *g = get_gk20a(dev);
267 struct gk20a_scale_profile *profile = g->scale_profile;
268
269 if (IS_ENABLED(CONFIG_GK20A_DEVFREQ)) {
270 if (!profile)
271 return -EINVAL;
272 } else {
273 profile = nvgpu_kzalloc(g, sizeof(*profile));
274 if (!profile)
275 return -ENOMEM;
276 g->scale_profile = profile;
277 }
278
279 profile->dev = dev;
280 profile->qos_notify_block.notifier_call = vgpu_qos_notify;
281 pm_qos_add_max_notifier(PM_QOS_GPU_FREQ_BOUNDS,
282 &profile->qos_notify_block);
283 return 0;
284}
285
286static void vgpu_pm_qos_remove(struct device *dev)
287{
288 struct gk20a *g = get_gk20a(dev);
289
290 pm_qos_remove_max_notifier(PM_QOS_GPU_FREQ_BOUNDS,
291 &g->scale_profile->qos_notify_block);
292 nvgpu_kfree(g, g->scale_profile);
293 g->scale_profile = NULL;
294}
295
296static int vgpu_pm_init(struct device *dev)
297{
298 struct gk20a *g = get_gk20a(dev);
299 struct gk20a_platform *platform = gk20a_get_platform(dev);
300 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
301 unsigned long *freqs;
302 int num_freqs;
303 int err = 0;
304
305 nvgpu_log_fn(g, " ");
306
307 if (nvgpu_platform_is_simulation(g))
308 return 0;
309
310 __pm_runtime_disable(dev, false);
311
312 if (IS_ENABLED(CONFIG_GK20A_DEVFREQ))
313 gk20a_scale_init(dev);
314
315 if (l->devfreq) {
316 /* set min/max frequency based on frequency table */
317 err = platform->get_clk_freqs(dev, &freqs, &num_freqs);
318 if (err)
319 return err;
320
321 if (num_freqs < 1)
322 return -EINVAL;
323
324 l->devfreq->min_freq = freqs[0];
325 l->devfreq->max_freq = freqs[num_freqs - 1];
326 }
327
328 err = vgpu_pm_qos_init(dev);
329 if (err)
330 return err;
331
332 return err;
333}
334
335int vgpu_probe(struct platform_device *pdev)
336{
337 struct nvgpu_os_linux *l;
338 struct gk20a *gk20a;
339 int err;
340 struct device *dev = &pdev->dev;
341 struct gk20a_platform *platform = gk20a_get_platform(dev);
342 struct vgpu_priv_data *priv;
343
344 if (!platform) {
345 dev_err(dev, "no platform data\n");
346 return -ENODATA;
347 }
348
349 l = kzalloc(sizeof(*l), GFP_KERNEL);
350 if (!l) {
351 dev_err(dev, "couldn't allocate gk20a support");
352 return -ENOMEM;
353 }
354 gk20a = &l->g;
355
356 nvgpu_log_fn(gk20a, " ");
357
358 nvgpu_init_gk20a(gk20a);
359
360 nvgpu_kmem_init(gk20a);
361
362 err = nvgpu_init_enabled_flags(gk20a);
363 if (err) {
364 kfree(gk20a);
365 return err;
366 }
367
368 l->dev = dev;
369 if (tegra_platform_is_vdk())
370 __nvgpu_set_enabled(gk20a, NVGPU_IS_FMODEL, true);
371
372 gk20a->is_virtual = true;
373
374 priv = nvgpu_kzalloc(gk20a, sizeof(*priv));
375 if (!priv) {
376 kfree(gk20a);
377 return -ENOMEM;
378 }
379
380 platform->g = gk20a;
381 platform->vgpu_priv = priv;
382
383 err = gk20a_user_init(dev, INTERFACE_NAME, &nvgpu_class);
384 if (err)
385 return err;
386
387 vgpu_init_support(pdev);
388
389 vgpu_init_vars(gk20a, platform);
390
391 init_rwsem(&l->busy_lock);
392
393 nvgpu_spinlock_init(&gk20a->mc_enable_lock);
394
395 gk20a->ch_wdt_timeout_ms = platform->ch_wdt_timeout_ms;
396
397 /* Initialize the platform interface. */
398 err = platform->probe(dev);
399 if (err) {
400 if (err == -EPROBE_DEFER)
401 nvgpu_info(gk20a, "platform probe failed");
402 else
403 nvgpu_err(gk20a, "platform probe failed");
404 return err;
405 }
406
407 if (platform->late_probe) {
408 err = platform->late_probe(dev);
409 if (err) {
410 nvgpu_err(gk20a, "late probe failed");
411 return err;
412 }
413 }
414
415 err = vgpu_comm_init(gk20a);
416 if (err) {
417 nvgpu_err(gk20a, "failed to init comm interface");
418 return -ENOSYS;
419 }
420
421 priv->virt_handle = vgpu_connect();
422 if (!priv->virt_handle) {
423 nvgpu_err(gk20a, "failed to connect to server node");
424 vgpu_comm_deinit();
425 return -ENOSYS;
426 }
427
428 err = vgpu_get_constants(gk20a);
429 if (err) {
430 vgpu_comm_deinit();
431 return err;
432 }
433
434 err = vgpu_pm_init(dev);
435 if (err) {
436 nvgpu_err(gk20a, "pm init failed");
437 return err;
438 }
439
440 err = nvgpu_thread_create(&priv->intr_handler, gk20a,
441 vgpu_intr_thread, "gk20a");
442 if (err)
443 return err;
444
445 gk20a_debug_init(gk20a, "gpu.0");
446
447 /* Set DMA parameters to allow larger sgt lists */
448 dev->dma_parms = &l->dma_parms;
449 dma_set_max_seg_size(dev, UINT_MAX);
450
451 gk20a->gr_idle_timeout_default = NVGPU_DEFAULT_GR_IDLE_TIMEOUT;
452 gk20a->timeouts_disabled_by_user = false;
453 nvgpu_atomic_set(&gk20a->timeouts_disabled_refcount, 0);
454
455 vgpu_create_sysfs(dev);
456 gk20a_init_gr(gk20a);
457
458 nvgpu_log_info(gk20a, "total ram pages : %lu", totalram_pages);
459 gk20a->gr.max_comptag_mem = totalram_size_in_mb;
460
461 nvgpu_ref_init(&gk20a->refcount);
462
463 return 0;
464}
465
466int vgpu_remove(struct platform_device *pdev)
467{
468 struct device *dev = &pdev->dev;
469 struct gk20a *g = get_gk20a(dev);
470
471 nvgpu_log_fn(g, " ");
472
473 vgpu_pm_qos_remove(dev);
474 if (g->remove_support)
475 g->remove_support(g);
476
477 vgpu_comm_deinit();
478 gk20a_sched_ctrl_cleanup(g);
479 gk20a_user_deinit(dev, &nvgpu_class);
480 vgpu_remove_sysfs(dev);
481 gk20a_get_platform(dev)->g = NULL;
482 gk20a_put(g);
483
484 return 0;
485}
486
487bool vgpu_is_reduced_bar1(struct gk20a *g)
488{
489 struct fifo_gk20a *f = &g->fifo;
490 struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
491
492 return resource_size(l->bar1_mem) == (resource_size_t)f->userd.size;
493}
494
495int vgpu_tegra_suspend(struct device *dev)
496{
497 struct tegra_vgpu_cmd_msg msg = {};
498 struct gk20a *g = get_gk20a(dev);
499 int err = 0;
500
501 msg.cmd = TEGRA_VGPU_CMD_SUSPEND;
502 msg.handle = vgpu_get_handle(g);
503 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
504 err = err ? err : msg.ret;
505 if (err)
506 nvgpu_err(g, "vGPU suspend failed\n");
507
508 return err;
509}
510
511int vgpu_tegra_resume(struct device *dev)
512{
513 struct tegra_vgpu_cmd_msg msg = {};
514 struct gk20a *g = get_gk20a(dev);
515 int err = 0;
516
517 msg.cmd = TEGRA_VGPU_CMD_RESUME;
518 msg.handle = vgpu_get_handle(g);
519 err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
520 err = err ? err : msg.ret;
521 if (err)
522 nvgpu_err(g, "vGPU resume failed\n");
523
524 return err;
525}
diff --git a/include/os/linux/vgpu/vgpu_linux.h b/include/os/linux/vgpu/vgpu_linux.h
new file mode 100644
index 0000000..ff7d3a6
--- /dev/null
+++ b/include/os/linux/vgpu/vgpu_linux.h
@@ -0,0 +1,68 @@
1/*
2 * Virtualized GPU Linux Interfaces
3 *
4 * Copyright (c) 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#ifndef __VGPU_LINUX_H__
20#define __VGPU_LINUX_H__
21
22struct device;
23struct platform_device;
24
25#ifdef CONFIG_TEGRA_GR_VIRTUALIZATION
26
27#include <nvgpu/vgpu/vgpu.h>
28
29int vgpu_pm_prepare_poweroff(struct device *dev);
30int vgpu_pm_finalize_poweron(struct device *dev);
31int vgpu_probe(struct platform_device *dev);
32int vgpu_remove(struct platform_device *dev);
33
34void vgpu_create_sysfs(struct device *dev);
35void vgpu_remove_sysfs(struct device *dev);
36
37int vgpu_tegra_suspend(struct device *dev);
38int vgpu_tegra_resume(struct device *dev);
39#else
40/* define placeholders for functions used outside of vgpu */
41
42static inline int vgpu_pm_prepare_poweroff(struct device *dev)
43{
44 return -ENOSYS;
45}
46static inline int vgpu_pm_finalize_poweron(struct device *dev)
47{
48 return -ENOSYS;
49}
50static inline int vgpu_probe(struct platform_device *dev)
51{
52 return -ENOSYS;
53}
54static inline int vgpu_remove(struct platform_device *dev)
55{
56 return -ENOSYS;
57}
58static inline int vgpu_tegra_suspend(struct device *dev)
59{
60 return -ENOSYS;
61}
62static inline int vgpu_tegra_resume(struct device *dev)
63{
64 return -ENOSYS;
65}
66#endif
67
68#endif
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-17 14:55:20 -0500