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gpu: nvgpu: Abstract IO aperture accessors

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Add abstraction of IO aperture accessors. Add new functions
gk20a_io_exists() and gk20a_io_valid_reg() to remove dependencies to
aperture fields from common code.

Implement Linux version of the abstraction by moving gk20a_readl()
and gk20a_writel() to new Linux specific io.c. Move the fields
defining IO aperture to nvgpu_os_linux.

Add t19x specific IO aperture initialization functions and add t19x
specific section to nvgpu_os_linux.

JIRA NVGPU-259

Change-Id: I09e79cda60d11a20d1099a9aaa6d2375236e94ce
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1569698
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Terje Bergstrom
2017-09-27 13:21:44 -07:00
committed by mobile promotions
parent ff9c3fc20a
commit be3750bc9e
15 changed files with 274 additions and 144 deletions
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13
drivers/gpu/nvgpu/common/linux/pci.c
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@@ -348,20 +348,21 @@ static int nvgpu_pci_init_support(struct pci_dev *pdev)
{
int err = 0;
struct gk20a *g = get_gk20a(&pdev->dev);
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
g->regs = ioremap(pci_resource_start(pdev, 0),
l->regs = ioremap(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (IS_ERR(g->regs)) {
if (IS_ERR(l->regs)) {
nvgpu_err(g, "failed to remap gk20a registers");
err = PTR_ERR(g->regs);
err = PTR_ERR(l->regs);
goto fail;
}
g->bar1 = ioremap(pci_resource_start(pdev, 1),
l->bar1 = ioremap(pci_resource_start(pdev, 1),
pci_resource_len(pdev, 1));
if (IS_ERR(g->bar1)) {
if (IS_ERR(l->bar1)) {
nvgpu_err(g, "failed to remap gk20a bar1");
err = PTR_ERR(g->bar1);
err = PTR_ERR(l->bar1);
goto fail;
}