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Commit 6a4ab669 authored by Parav Pandit's avatar Parav Pandit Committed by Roland Dreier
Browse files

be2net: Add function to issue mailbox cmd on MQ 



- Add generic function to issue mailbox cmd on MQ as export function.
- RoCE driver will use this before it setups its own MQ.

Signed-off-by: default avatarParav Pandit <parav.pandit@emulex.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent d48b97b4

drivers/net/ethernet/emulex/benet/be_cmds.c

+39 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
 * Costa Mesa, CA 92626

 */



#include <linux/module.h>

#include "be.h"

#include "be_cmds.h"
@@ -2556,3 +2557,41 @@ err: 
	pci_free_consistent(adapter->pdev, cmd.size, cmd.va, cmd.dma);

	return status;

}



int be_roce_mcc_cmd(void *netdev_handle, void *wrb_payload,

			int wrb_payload_size, u16 *cmd_status, u16 *ext_status)

{

	struct be_adapter *adapter = netdev_priv(netdev_handle);

	struct be_mcc_wrb *wrb;

	struct be_cmd_req_hdr *hdr = (struct be_cmd_req_hdr *) wrb_payload;

	struct be_cmd_req_hdr *req;

	struct be_cmd_resp_hdr *resp;

	int status;



	spin_lock_bh(&adapter->mcc_lock);



	wrb = wrb_from_mccq(adapter);

	if (!wrb) {

		status = -EBUSY;

		goto err;

	}

	req = embedded_payload(wrb);

	resp = embedded_payload(wrb);



	be_wrb_cmd_hdr_prepare(req, hdr->subsystem,

			       hdr->opcode, wrb_payload_size, wrb, NULL);

	memcpy(req, wrb_payload, wrb_payload_size);

	be_dws_cpu_to_le(req, wrb_payload_size);



	status = be_mcc_notify_wait(adapter);

	if (cmd_status)

		*cmd_status = (status & 0xffff);

	if (ext_status)

		*ext_status = 0;

	memcpy(wrb_payload, resp, sizeof(*resp) + resp->response_length);

	be_dws_le_to_cpu(wrb_payload, sizeof(*resp) + resp->response_length);

err:

	spin_unlock_bh(&adapter->mcc_lock);

	return status;

}

EXPORT_SYMBOL(be_roce_mcc_cmd);