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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
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
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@@ -2278,7 +2278,7 @@ int gk20a_ctrl_dev_mmap(struct file *filp, struct vm_area_struct *vma)
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
err = io_remap_pfn_range(vma, vma->vm_start,
l->usermode_regs_bus_addr >> PAGE_SHIFT,
g->usermode_regs_bus_addr >> PAGE_SHIFT,
vma->vm_end - vma->vm_start, vma->vm_page_prot);
if (!err) {
priv->usermode_vma.vma = vma;
@@ -2297,7 +2297,6 @@ static void alter_usermode_mapping(struct gk20a *g,
struct gk20a_ctrl_priv *priv,
bool poweroff)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
struct vm_area_struct *vma = priv->usermode_vma.vma;
bool vma_mapped = priv->usermode_vma.vma_mapped;
int err;
@@ -2335,7 +2334,7 @@ static void alter_usermode_mapping(struct gk20a *g,
} else if (!poweroff && !vma_mapped) {
vma->vm_flags = priv->usermode_vma.flags;
err = io_remap_pfn_range(vma, vma->vm_start,
l->usermode_regs_bus_addr >> PAGE_SHIFT,
g->usermode_regs_bus_addr >> PAGE_SHIFT,
vma->vm_end - vma->vm_start, vma->vm_page_prot);
if (err != 0) {
nvgpu_err(g, "can't restore usermode mapping");