mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
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b0ad7c0ad2
The functions nvgpu_warn_on_no_regs() and nvgpu_wait_for_idle() are only used by linux, so move them out of nvgpu.common.init into linux-specific driver code. JIRA NVGPU-2385 Change-Id: Iea38cdb16f9e513d8242c1b07b80171b8b68db5b Signed-off-by: Philip Elcan <pelcan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2156459 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: Sagar Kamble <skamble@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
137 lines
3.2 KiB
C
137 lines
3.2 KiB
C
/*
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* Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <nvgpu/io.h>
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#include <nvgpu/types.h>
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#include <nvgpu/gk20a.h>
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#include <nvgpu/nvgpu_init.h>
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#include "os_linux.h"
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static void nvgpu_warn_on_no_regs(void)
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{
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WARN_ONCE(true, "Attempted access to GPU regs after unmapping!");
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}
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void nvgpu_writel(struct gk20a *g, u32 r, u32 v)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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if (unlikely(!l->regs)) {
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nvgpu_warn_on_no_regs();
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x v=0x%x (failed)", r, v);
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} else {
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writel_relaxed(v, l->regs + r);
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nvgpu_wmb();
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x v=0x%x", r, v);
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}
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}
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void nvgpu_writel_relaxed(struct gk20a *g, u32 r, u32 v)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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if (unlikely(!l->regs)) {
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nvgpu_warn_on_no_regs();
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x v=0x%x (failed)", r, v);
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} else {
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writel_relaxed(v, l->regs + r);
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}
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}
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u32 nvgpu_readl(struct gk20a *g, u32 r)
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{
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u32 v = nvgpu_readl_impl(g, r);
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if (v == 0xffffffff)
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nvgpu_check_gpu_state(g);
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return v;
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}
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u32 nvgpu_readl_impl(struct gk20a *g, u32 r)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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u32 v = 0xffffffff;
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if (unlikely(!l->regs)) {
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nvgpu_warn_on_no_regs();
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x v=0x%x (failed)", r, v);
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} else {
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v = readl(l->regs + r);
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x v=0x%x", r, v);
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}
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return v;
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}
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void nvgpu_writel_loop(struct gk20a *g, u32 r, u32 v)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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if (unlikely(!l->regs)) {
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nvgpu_warn_on_no_regs();
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x v=0x%x (failed)", r, v);
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} else {
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nvgpu_wmb();
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do {
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writel_relaxed(v, l->regs + r);
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} while (readl(l->regs + r) != v);
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x v=0x%x", r, v);
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}
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}
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void nvgpu_bar1_writel(struct gk20a *g, u32 b, u32 v)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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if (unlikely(!l->bar1)) {
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nvgpu_warn_on_no_regs();
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nvgpu_log(g, gpu_dbg_reg, "b=0x%x v=0x%x (failed)", b, v);
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} else {
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nvgpu_wmb();
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writel_relaxed(v, l->bar1 + b);
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nvgpu_log(g, gpu_dbg_reg, "b=0x%x v=0x%x", b, v);
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}
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}
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u32 nvgpu_bar1_readl(struct gk20a *g, u32 b)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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u32 v = 0xffffffff;
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if (unlikely(!l->bar1)) {
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nvgpu_warn_on_no_regs();
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nvgpu_log(g, gpu_dbg_reg, "b=0x%x v=0x%x (failed)", b, v);
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} else {
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v = readl(l->bar1 + b);
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nvgpu_log(g, gpu_dbg_reg, "b=0x%x v=0x%x", b, v);
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}
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return v;
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}
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bool nvgpu_io_exists(struct gk20a *g)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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return l->regs != NULL;
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}
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bool nvgpu_io_valid_reg(struct gk20a *g, u32 r)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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return r < resource_size(l->regs);
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}
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