diff options
Diffstat (limited to 'drivers/gpu/nvgpu/common/linux/soc.c')
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/soc.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/drivers/gpu/nvgpu/common/linux/soc.c b/drivers/gpu/nvgpu/common/linux/soc.c deleted file mode 100644 index 1b27d6f1..00000000 --- a/drivers/gpu/nvgpu/common/linux/soc.c +++ /dev/null | |||
@@ -1,122 +0,0 @@ | |||
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 | |||
14 | #include <soc/tegra/chip-id.h> | ||
15 | #include <soc/tegra/fuse.h> | ||
16 | #include <soc/tegra/tegra_bpmp.h> | ||
17 | #ifdef CONFIG_TEGRA_HV_MANAGER | ||
18 | #include <soc/tegra/virt/syscalls.h> | ||
19 | #endif | ||
20 | |||
21 | #include <nvgpu/soc.h> | ||
22 | #include "os_linux.h" | ||
23 | #include "platform_gk20a.h" | ||
24 | |||
25 | bool nvgpu_platform_is_silicon(struct gk20a *g) | ||
26 | { | ||
27 | return tegra_platform_is_silicon(); | ||
28 | } | ||
29 | |||
30 | bool nvgpu_platform_is_simulation(struct gk20a *g) | ||
31 | { | ||
32 | return tegra_platform_is_vdk(); | ||
33 | } | ||
34 | |||
35 | bool nvgpu_platform_is_fpga(struct gk20a *g) | ||
36 | { | ||
37 | return tegra_platform_is_fpga(); | ||
38 | } | ||
39 | |||
40 | bool nvgpu_is_hypervisor_mode(struct gk20a *g) | ||
41 | { | ||
42 | return is_tegra_hypervisor_mode(); | ||
43 | } | ||
44 | |||
45 | bool nvgpu_is_bpmp_running(struct gk20a *g) | ||
46 | { | ||
47 | return tegra_bpmp_running(); | ||
48 | } | ||
49 | |||
50 | bool nvgpu_is_soc_t194_a01(struct gk20a *g) | ||
51 | { | ||
52 | return ((tegra_get_chip_id() == TEGRA194 && | ||
53 | tegra_chip_get_revision() == TEGRA194_REVISION_A01) ? | ||
54 | true : false); | ||
55 | } | ||
56 | |||
57 | #ifdef CONFIG_TEGRA_HV_MANAGER | ||
58 | /* When nvlink is enabled on dGPU, we need to use physical memory addresses. | ||
59 | * There is no SMMU translation. However, the device initially enumerates as a | ||
60 | * PCIe device. As such, when allocation memory for this PCIe device, the DMA | ||
61 | * framework ends up allocating memory using SMMU (if enabled in device tree). | ||
62 | * As a result, when we switch to nvlink, we need to use underlying physical | ||
63 | * addresses, even if memory mappings exist in SMMU. | ||
64 | * In addition, when stage-2 SMMU translation is enabled (for instance when HV | ||
65 | * is enabled), the addresses we get from dma_alloc are IPAs. We need to | ||
66 | * convert them to PA. | ||
67 | */ | ||
68 | static u64 nvgpu_tegra_hv_ipa_pa(struct gk20a *g, u64 ipa) | ||
69 | { | ||
70 | struct device *dev = dev_from_gk20a(g); | ||
71 | struct gk20a_platform *platform = gk20a_get_platform(dev); | ||
72 | struct hyp_ipa_pa_info info; | ||
73 | int err; | ||
74 | u64 pa = 0ULL; | ||
75 | |||
76 | err = hyp_read_ipa_pa_info(&info, platform->vmid, ipa); | ||
77 | if (err < 0) { | ||
78 | /* WAR for bug 2096877 | ||
79 | * hyp_read_ipa_pa_info only looks up RAM mappings. | ||
80 | * assume one to one IPA:PA mapping for syncpt aperture | ||
81 | */ | ||
82 | u64 start = g->syncpt_unit_base; | ||
83 | u64 end = g->syncpt_unit_base + g->syncpt_unit_size; | ||
84 | if ((ipa >= start) && (ipa < end)) { | ||
85 | pa = ipa; | ||
86 | nvgpu_log(g, gpu_dbg_map_v, | ||
87 | "ipa=%llx vmid=%d -> pa=%llx (SYNCPT)\n", | ||
88 | ipa, platform->vmid, pa); | ||
89 | } else { | ||
90 | nvgpu_err(g, "ipa=%llx translation failed vmid=%u err=%d", | ||
91 | ipa, platform->vmid, err); | ||
92 | } | ||
93 | } else { | ||
94 | pa = info.base + info.offset; | ||
95 | nvgpu_log(g, gpu_dbg_map_v, | ||
96 | "ipa=%llx vmid=%d -> pa=%llx " | ||
97 | "base=%llx offset=%llx size=%llx\n", | ||
98 | ipa, platform->vmid, pa, info.base, | ||
99 | info.offset, info.size); | ||
100 | } | ||
101 | return pa; | ||
102 | } | ||
103 | #endif | ||
104 | |||
105 | int nvgpu_init_soc_vars(struct gk20a *g) | ||
106 | { | ||
107 | #ifdef CONFIG_TEGRA_HV_MANAGER | ||
108 | struct device *dev = dev_from_gk20a(g); | ||
109 | struct gk20a_platform *platform = gk20a_get_platform(dev); | ||
110 | int err; | ||
111 | |||
112 | if (nvgpu_is_hypervisor_mode(g)) { | ||
113 | err = hyp_read_gid(&platform->vmid); | ||
114 | if (err) { | ||
115 | nvgpu_err(g, "failed to read vmid"); | ||
116 | return err; | ||
117 | } | ||
118 | platform->phys_addr = nvgpu_tegra_hv_ipa_pa; | ||
119 | } | ||
120 | #endif | ||
121 | return 0; | ||
122 | } | ||