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habanalabs/gaudi: restore user registers when context opens 

Because we don't have multiple contexts in GAUDI, and to minimize
calls to is_idle function (which uses many register reads), move
the call to clear the user registers to the opening of the single
user context.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Oded Gabbay 2021-08-03 08:13:39 +03:00
parent 60d86e74df
commit 929cbab5b3
1 changed files with 12 additions and 2 deletions
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14
drivers/misc/habanalabs/gaudi/gaudi.c
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@ -6087,7 +6087,7 @@ static int gaudi_restore_user_registers(struct hl_device *hdev)
static int gaudi_context_switch(struct hl_device *hdev, u32 asid)
{
return gaudi_restore_user_registers(hdev);
return 0;
}
static int gaudi_mmu_clear_pgt_range(struct hl_device *hdev)
@ -8657,10 +8657,20 @@ static void gaudi_internal_cb_pool_fini(struct hl_device *hdev,
static int gaudi_ctx_init(struct hl_ctx *ctx)
{
int rc;
if (ctx->asid == HL_KERNEL_ASID_ID)
return 0;
return gaudi_internal_cb_pool_init(ctx->hdev, ctx);
rc = gaudi_internal_cb_pool_init(ctx->hdev, ctx);
if (rc)
return rc;
rc = gaudi_restore_user_registers(ctx->hdev);
if (rc)
gaudi_internal_cb_pool_fini(ctx->hdev, ctx);
return rc;
}
static void gaudi_ctx_fini(struct hl_ctx *ctx)