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| author |   Oded Gabbay <oded.gabbay@gmail.com> | 2019-02-28 10:46:12 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-28 13:04:59 +0100 |
| commit | a28ce422a6d926c11d7e72a83ccaa4f9b06077ea (patch) | |
| tree | 65f08f69e8eec0cf7d5272a87e2e612f975c04ec /drivers/misc/habanalabs/habanalabs.h | |
| parent | habanalabs: add MMU DRAM default page mapping (diff) | |
| download | linux-dev-a28ce422a6d926c11d7e72a83ccaa4f9b06077ea.tar.xz linux-dev-a28ce422a6d926c11d7e72a83ccaa4f9b06077ea.zip | |
habanalabs: disable CPU access on timeouts
This patch provides a workaround for a bug in the F/W where the response
time for a request from KMD may take more then 100ms. This could cause the
queue between KMD and the F/W to get out of sync.
The WA is to:
1. Increase the timeout of ALL requests to 1s.
2. In case a request isn't answered in time, mark the state as
"cpu_disabled" and prevent sending further requests from KMD to the F/W.
This will eventually lead to a heartbeat failure and hard reset of the
device.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/habanalabs/habanalabs.h')
| -rw-r--r-- | drivers/misc/habanalabs/habanalabs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h index 59b25c6fae00..a7c95e9f9b9a 100644 --- a/drivers/misc/habanalabs/habanalabs.h +++ b/drivers/misc/habanalabs/habanalabs.h @@ -1079,6 +1079,7 @@ struct hl_device_reset_work { * @dram_default_page_mapping: is DRAM default page mapping enabled. * @init_done: is the initialization of the device done. * @mmu_enable: is MMU enabled. + * @device_cpu_disabled: is the device CPU disabled (due to timeouts) */ struct hl_device { struct pci_dev *pdev; @@ -1146,6 +1147,7 @@ struct hl_device { u8 dram_supports_virtual_memory; u8 dram_default_page_mapping; u8 init_done; + u8 device_cpu_disabled; /* Parameters for bring-up */ u8 mmu_enable; |