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gpu: nvgpu: store usermode regs bus addr directly

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Instead of just the base address of the main register range, store
(also) the base address of usermode area. All regs may not be always
available; on vgpu guests we have only the usermode regs.

Store the usermode addr we get from a platform resource directly in
gv11b_vgpu_probe() for vgpu. In that case the main reg addr is unset.

The base address is computed in gk20a_pm_finalize_poweron() for native
environments; when the reg addr is read from a resource, the chip is
still unknown and as such the HAL op for reading the usermode base
offset is unavailable.

Bug 200145225
Bug 200467197

Change-Id: I8855bb54a6456eb63b69559c84398f7eeaec3513
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1951524
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Konsta Holtta
2018-11-15 13:20:57 +02:00
committed by mobile promotions
parent a23c127603
commit d49d64e720
4 changed files with 17 additions and 10 deletions
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10
drivers/gpu/nvgpu/os/linux/module.c
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@@ -286,6 +286,16 @@ int gk20a_pm_finalize_poweron(struct device *dev)
if (err)
goto done;
if (g->ops.fifo.usermode_base != NULL) {
/*
* Native has regs_bus_addr set but not this one yet. Virtual
* gets usermode_regs_bus_addr directly from chip-specific
* probe, and regs_bus_addr stays unset.
*/
l->usermode_regs_bus_addr = l->regs_bus_addr +
g->ops.fifo.usermode_base(g);
}
err = nvgpu_finalize_poweron_linux(l);
if (err)
goto done;