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habanalabs: generalize COMMS message sending procedure

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Instead of having dedicated function per message that we want to send
to the firmware in COMMS protocol, have a generic function that we can
call to from other parts of the driver

Signed-off-by: Alon Mizrahi <amizrahi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Alon Mizrahi 2021-09-01 18:05:00 +03:00 committed by Oded Gabbay
parent 7457269136
commit 2ee58fee3f
1 changed files with 18 additions and 10 deletions
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28
drivers/misc/habanalabs/common/firmware_if.c
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@ -2162,18 +2162,17 @@ static void hl_fw_linux_update_state(struct hl_device *hdev,
}
/**
* hl_fw_dynamic_report_reset_cause - send a COMMS message with the cause
* of the newly triggered hard reset
* hl_fw_dynamic_send_msg - send a COMMS message with attached data
*
* @hdev: pointer to the habanalabs device structure
* @fw_loader: managing structure for loading device's FW
* @reset_cause: enumerated cause for the recent hard reset
* @msg_type: message type
* @data: data to be sent
*
* @return 0 on success, otherwise non-zero error code
*/
static int hl_fw_dynamic_report_reset_cause(struct hl_device *hdev,
struct fw_load_mgr *fw_loader,
enum comms_reset_cause reset_cause)
static int hl_fw_dynamic_send_msg(struct hl_device *hdev,
struct fw_load_mgr *fw_loader, u8 msg_type, void *data)
{
struct lkd_msg_comms msg;
int rc;
@ -2181,11 +2180,20 @@ static int hl_fw_dynamic_report_reset_cause(struct hl_device *hdev,
memset(&msg, 0, sizeof(msg));
/* create message to be sent */
msg.header.type = HL_COMMS_RESET_CAUSE_TYPE;
msg.header.type = msg_type;
msg.header.size = cpu_to_le16(sizeof(struct comms_msg_header));
msg.header.magic = cpu_to_le32(HL_COMMS_MSG_MAGIC);
msg.reset_cause = reset_cause;
switch (msg_type) {
case HL_COMMS_RESET_CAUSE_TYPE:
msg.reset_cause = *(__u8 *) data;
break;
default:
dev_err(hdev->dev,
"Send COMMS message - invalid message type %u\n",
msg_type);
return -EINVAL;
}
rc = hl_fw_dynamic_request_descriptor(hdev, fw_loader,
sizeof(struct lkd_msg_comms));
@ -2252,8 +2260,8 @@ static int hl_fw_dynamic_init_cpu(struct hl_device *hdev,
goto protocol_err;
if (hdev->curr_reset_cause) {
rc = hl_fw_dynamic_report_reset_cause(hdev, fw_loader,
hdev->curr_reset_cause);
rc = hl_fw_dynamic_send_msg(hdev, fw_loader,
HL_COMMS_RESET_CAUSE_TYPE, &hdev->curr_reset_cause);
if (rc)
goto protocol_err;