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gpu: nvgpu: move mapped regs to gk20a

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- moved reg fields to gk20a
- added os abstract register accessor in nvgpu/io.h
- defined linux register access abstract implementation
- hook up with posix. posix implementation of the register accessor uses
  the high 4 bit of address to identify register apertures then call the
  according callbacks.

It helps to unify code across OSes.

Bug 2999617

Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Change-Id: Ifcb737e4b4d5b1d8bae310ae50b1ce0aa04f750c
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2497937
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Richard Zhao
2021-03-11 20:54:38 -08:00
committed by mobile promotions
parent 0a25376965
commit 643eb158a3
18 changed files with 302 additions and 244 deletions
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26
drivers/gpu/nvgpu/os/linux/module_usermode.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2017-2020, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2017-2021, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -27,9 +27,7 @@
*/
void nvgpu_lockout_usermode_registers(struct gk20a *g)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
l->usermode_regs = NULL;
g->usermode_regs = 0U;
}
/*
@@ -37,33 +35,27 @@ void nvgpu_lockout_usermode_registers(struct gk20a *g)
*/
void nvgpu_restore_usermode_registers(struct gk20a *g)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
l->usermode_regs = l->usermode_regs_saved;
g->usermode_regs = g->usermode_regs_saved;
}
void nvgpu_remove_usermode_support(struct gk20a *g)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
if (l->usermode_regs) {
l->usermode_regs = NULL;
if (g->usermode_regs) {
g->usermode_regs = 0U;
}
}
void nvgpu_init_usermode_support(struct gk20a *g)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
if (g->ops.usermode.base == NULL) {
return;
}
if (l->usermode_regs == NULL) {
l->usermode_regs = l->regs + g->ops.usermode.bus_base(g);
l->usermode_regs_saved = l->usermode_regs;
if (g->usermode_regs == 0U) {
g->usermode_regs = g->regs + g->ops.usermode.bus_base(g);
g->usermode_regs_saved = g->usermode_regs;
}
l->usermode_regs_bus_addr = l->regs_bus_addr +
g->usermode_regs_bus_addr = g->regs_bus_addr +
g->ops.usermode.bus_base(g);
}