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gpu: nvgpu: Falcon controller halt interrupt status clear

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- Added nvgpu_flcn_clear_halt_intr_status() to
Wait for halt interrupt status clear by
clear_halt_interrupt_status() HAL within timeout

- Added gk20a_flcn_clear_halt_interrupt_status()
to clear falcon controller halt interrupt status

- Replaced flacon halt interrupt clear with
nvgpu_flcn_clear_halt_intr_status() method

NVGPU JIRA-99

Change-Id: I762a3c01cd1d02028eb6aaa9898a50be94376619
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master/r/1511333
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
This commit is contained in:
Mahantesh Kumbar
2017-06-30 11:42:17 +05:30
committed by mobile promotions
parent fbeca4a841
commit 2cf964d175
6 changed files with 66 additions and 39 deletions
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28
drivers/gpu/nvgpu/common/falcon/falcon.c
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@@ -122,6 +122,34 @@ int nvgpu_flcn_wait_for_halt(struct nvgpu_falcon *flcn, unsigned int timeout)
return status;
}
int nvgpu_flcn_clear_halt_intr_status(struct nvgpu_falcon *flcn,
unsigned int timeout)
{
struct gk20a *g = flcn->g;
struct nvgpu_falcon_ops *flcn_ops = &flcn->flcn_ops;
struct nvgpu_timeout to;
int status = 0;
if (!flcn_ops->clear_halt_interrupt_status) {
nvgpu_warn(flcn->g, "Invalid op on falcon 0x%x ",
flcn->flcn_id);
return -EINVAL;
}
nvgpu_timeout_init(g, &to, timeout, NVGPU_TIMER_CPU_TIMER);
do {
if (flcn_ops->clear_halt_interrupt_status(flcn))
break;
nvgpu_udelay(1);
} while (!nvgpu_timeout_expired(&to));
if (nvgpu_timeout_peek_expired(&to))
status = -EBUSY;
return status;
}
bool nvgpu_flcn_get_idle_status(struct nvgpu_falcon *flcn)
{
struct nvgpu_falcon_ops *flcn_ops = &flcn->flcn_ops;