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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/nvgpu_mem.c
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@@ -105,9 +105,10 @@ void nvgpu_mem_end(struct gk20a *g, struct nvgpu_mem *mem)
static void pramin_access_batch_rd_n(struct gk20a *g, u32 start, u32 words, u32 **arg)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
u32 r = start, *dest_u32 = *arg;
if (!g->regs) {
if (!l->regs) {
__gk20a_warn_on_no_regs();
return;
}
@@ -182,15 +183,16 @@ void nvgpu_mem_rd_n(struct gk20a *g, struct nvgpu_mem *mem,
static void pramin_access_batch_wr_n(struct gk20a *g, u32 start, u32 words, u32 **arg)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
u32 r = start, *src_u32 = *arg;
if (!g->regs) {
if (!l->regs) {
__gk20a_warn_on_no_regs();
return;
}
while (words--) {
writel_relaxed(*src_u32++, g->regs + r);
writel_relaxed(*src_u32++, l->regs + r);
r += sizeof(u32);
}
@@ -256,15 +258,16 @@ void nvgpu_mem_wr_n(struct gk20a *g, struct nvgpu_mem *mem, u32 offset,
static void pramin_access_batch_set(struct gk20a *g, u32 start, u32 words, u32 **arg)
{
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
u32 r = start, repeat = **arg;
if (!g->regs) {
if (!l->regs) {
__gk20a_warn_on_no_regs();
return;
}
while (words--) {
writel_relaxed(repeat, g->regs + r);
writel_relaxed(repeat, l->regs + r);
r += sizeof(u32);
}
}