The heartbeat thread is active during soft-reset, and it tries to send
messages to CPU-CP core.
Within the soft-reset, in the time window in which the device is marked
as disabled, any CPU-CP command is "silently" skipped and a success
value it returned.
However, in addition to the return value, the heartbeat function also
checks the F/W result, but because no command is sent in this time
window, the result variable won't hold the expected value and we will
have a false heartbeat failure.
To avoid it, modify the "silent" skip to be done only in hard-reset.
The CPU-CP should be able to handle messages during soft-reset.
In addition to the heartbeat problem, this should also solve other
issues in other flows that send messages during soft-reset and use the
F/W result as it w/o being aware to the reset.
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
dma_addr_t pkt_dma_addr;
struct hl_bd *sent_bd;
u32 tmp, expected_ack_val, pi;
- int rc = 0;
+ int rc;
pkt = hdev->asic_funcs->cpu_accessible_dma_pool_alloc(hdev, len,
&pkt_dma_addr);
mutex_lock(&hdev->send_cpu_message_lock);
- if (hdev->disabled)
+ /* CPU-CP messages can be sent during soft-reset */
+ if (hdev->disabled && !hdev->reset_info.is_in_soft_reset) {
+ rc = 0;
goto out;
+ }
if (hdev->device_cpu_disabled) {
rc = -EIO;