diff options
Diffstat (limited to 'drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_fifo_gv11b.c')
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_fifo_gv11b.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_fifo_gv11b.c b/drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_fifo_gv11b.c new file mode 100644 index 00000000..710e4b90 --- /dev/null +++ b/drivers/gpu/nvgpu/common/linux/vgpu/gv11b/vgpu_fifo_gv11b.c | |||
@@ -0,0 +1,111 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2017, 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 <gk20a/gk20a.h> | ||
18 | |||
19 | #include "common/linux/vgpu/vgpu.h" | ||
20 | #include "gv11b/fifo_gv11b.h" | ||
21 | #include <nvgpu/nvhost_t19x.h> | ||
22 | |||
23 | #include <linux/tegra_vgpu.h> | ||
24 | |||
25 | #ifdef CONFIG_TEGRA_GK20A_NVHOST | ||
26 | int vgpu_gv11b_fifo_alloc_syncpt_buf(struct channel_gk20a *c, | ||
27 | u32 syncpt_id, struct nvgpu_mem *syncpt_buf) | ||
28 | { | ||
29 | int err; | ||
30 | struct gk20a *g = c->g; | ||
31 | struct vm_gk20a *vm = c->vm; | ||
32 | struct tegra_vgpu_cmd_msg msg = {}; | ||
33 | struct tegra_vgpu_map_syncpt_params *p = &msg.params.t19x.map_syncpt; | ||
34 | |||
35 | /* | ||
36 | * Add ro map for complete sync point shim range in vm. | ||
37 | * All channels sharing same vm will share same ro mapping. | ||
38 | * Create rw map for current channel sync point. | ||
39 | */ | ||
40 | if (!vm->syncpt_ro_map_gpu_va) { | ||
41 | vm->syncpt_ro_map_gpu_va = __nvgpu_vm_alloc_va(vm, | ||
42 | g->syncpt_unit_size, | ||
43 | gmmu_page_size_kernel); | ||
44 | if (!vm->syncpt_ro_map_gpu_va) { | ||
45 | nvgpu_err(g, "allocating read-only va space failed"); | ||
46 | return -ENOMEM; | ||
47 | } | ||
48 | |||
49 | msg.cmd = TEGRA_VGPU_CMD_MAP_SYNCPT; | ||
50 | msg.handle = vgpu_get_handle(g); | ||
51 | p->as_handle = c->vm->handle; | ||
52 | p->gpu_va = vm->syncpt_ro_map_gpu_va; | ||
53 | p->len = g->syncpt_unit_size; | ||
54 | p->offset = 0; | ||
55 | p->prot = TEGRA_VGPU_MAP_PROT_READ_ONLY; | ||
56 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
57 | err = err ? err : msg.ret; | ||
58 | if (err) { | ||
59 | nvgpu_err(g, | ||
60 | "mapping read-only va space failed err %d", | ||
61 | err); | ||
62 | __nvgpu_vm_free_va(c->vm, vm->syncpt_ro_map_gpu_va, | ||
63 | gmmu_page_size_kernel); | ||
64 | vm->syncpt_ro_map_gpu_va = 0; | ||
65 | return err; | ||
66 | } | ||
67 | } | ||
68 | |||
69 | syncpt_buf->gpu_va = __nvgpu_vm_alloc_va(c->vm, g->syncpt_size, | ||
70 | gmmu_page_size_kernel); | ||
71 | if (!syncpt_buf->gpu_va) { | ||
72 | nvgpu_err(g, "allocating syncpt va space failed"); | ||
73 | return -ENOMEM; | ||
74 | } | ||
75 | |||
76 | msg.cmd = TEGRA_VGPU_CMD_MAP_SYNCPT; | ||
77 | msg.handle = vgpu_get_handle(g); | ||
78 | p->as_handle = c->vm->handle; | ||
79 | p->gpu_va = syncpt_buf->gpu_va; | ||
80 | p->len = g->syncpt_size; | ||
81 | p->offset = | ||
82 | nvgpu_nvhost_syncpt_unit_interface_get_byte_offset(syncpt_id); | ||
83 | p->prot = TEGRA_VGPU_MAP_PROT_NONE; | ||
84 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
85 | err = err ? err : msg.ret; | ||
86 | if (err) { | ||
87 | nvgpu_err(g, "mapping syncpt va space failed err %d", err); | ||
88 | __nvgpu_vm_free_va(c->vm, syncpt_buf->gpu_va, | ||
89 | gmmu_page_size_kernel); | ||
90 | return err; | ||
91 | } | ||
92 | |||
93 | return 0; | ||
94 | } | ||
95 | #endif /* CONFIG_TEGRA_GK20A_NVHOST */ | ||
96 | |||
97 | int vgpu_gv11b_init_fifo_setup_hw(struct gk20a *g) | ||
98 | { | ||
99 | struct fifo_gk20a *f = &g->fifo; | ||
100 | int err; | ||
101 | |||
102 | err = vgpu_get_attribute(vgpu_get_handle(g), | ||
103 | TEGRA_VGPU_ATTRIB_MAX_SUBCTX_COUNT, | ||
104 | &f->t19x.max_subctx_count); | ||
105 | if (err) { | ||
106 | nvgpu_err(g, "get max_subctx_count failed %d", err); | ||
107 | return err; | ||
108 | } | ||
109 | |||
110 | return 0; | ||
111 | } | ||