diff options
author | Terje Bergstrom <tbergstrom@nvidia.com> | 2017-09-27 18:05:50 -0400 |
---|---|---|
committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-10-13 18:20:01 -0400 |
commit | b0092ea95c6e1f695912cdb0b13767f3881cb22f (patch) | |
tree | 0ed4ebc0b72592d8addf6e459269dd5aa245c368 /drivers/gpu/nvgpu/common | |
parent | 506f891f76800b059e960a195bb0da4c71cb2e16 (diff) |
gpu: nvgpu: gv11b: Abstract IO aperture accessors
Implement T19x specific usermode aperture initialization functions.
Move usermode_regs field to nvgpu_os_linux_t19x, because it is
Linux specific.
JIRA NVGPU-259
Change-Id: I9d6ce243a692ab48209d468288ed85f89fb26770
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1569699
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/common')
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/io_t19x.c | 29 | ||||
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/module_t19x.c | 62 |
2 files changed, 91 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/common/linux/io_t19x.c b/drivers/gpu/nvgpu/common/linux/io_t19x.c new file mode 100644 index 00000000..5c6b76ba --- /dev/null +++ b/drivers/gpu/nvgpu/common/linux/io_t19x.c | |||
@@ -0,0 +1,29 @@ | |||
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 | |||
14 | #include <nvgpu/io.h> | ||
15 | #include <nvgpu/types.h> | ||
16 | |||
17 | #include "common/linux/os_linux.h" | ||
18 | #include "gk20a/gk20a.h" | ||
19 | |||
20 | #include <nvgpu/hw/gv11b/hw_usermode_gv11b.h> | ||
21 | |||
22 | void gv11b_usermode_writel(struct gk20a *g, u32 r, u32 v) | ||
23 | { | ||
24 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
25 | void __iomem *reg = l->t19x.usermode_regs + (r - usermode_cfg0_r()); | ||
26 | |||
27 | writel_relaxed(v, reg); | ||
28 | gk20a_dbg(gpu_dbg_reg, "usermode r=0x%x v=0x%x", r, v); | ||
29 | } | ||
diff --git a/drivers/gpu/nvgpu/common/linux/module_t19x.c b/drivers/gpu/nvgpu/common/linux/module_t19x.c new file mode 100644 index 00000000..f0e3d438 --- /dev/null +++ b/drivers/gpu/nvgpu/common/linux/module_t19x.c | |||
@@ -0,0 +1,62 @@ | |||
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 <nvgpu/types.h> | ||
18 | |||
19 | #include <nvgpu/hw/gv11b/hw_usermode_gv11b.h> | ||
20 | |||
21 | #include "common/linux/os_linux.h" | ||
22 | |||
23 | /* | ||
24 | * Locks out the driver from accessing GPU registers. This prevents access to | ||
25 | * thse registers after the GPU has been clock or power gated. This should help | ||
26 | * find annoying bugs where register reads and writes are silently dropped | ||
27 | * after the GPU has been turned off. On older chips these reads and writes can | ||
28 | * also lock the entire CPU up. | ||
29 | */ | ||
30 | void t19x_lockout_registers(struct gk20a *g) | ||
31 | { | ||
32 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
33 | |||
34 | l->t19x.usermode_regs = NULL; | ||
35 | } | ||
36 | |||
37 | /* | ||
38 | * Undoes t19x_lockout_registers(). | ||
39 | */ | ||
40 | void t19x_restore_registers(struct gk20a *g) | ||
41 | { | ||
42 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
43 | |||
44 | l->t19x.usermode_regs = l->t19x.usermode_regs_saved; | ||
45 | } | ||
46 | |||
47 | void t19x_remove_support(struct gk20a *g) | ||
48 | { | ||
49 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
50 | |||
51 | if (l->t19x.usermode_regs) { | ||
52 | l->t19x.usermode_regs = NULL; | ||
53 | } | ||
54 | } | ||
55 | |||
56 | void t19x_init_support(struct gk20a *g) | ||
57 | { | ||
58 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
59 | |||
60 | l->t19x.usermode_regs = l->regs + usermode_cfg0_r(); | ||
61 | l->t19x.usermode_regs_saved = l->t19x.usermode_regs; | ||
62 | } | ||