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be2net: Add function to issue mailbox cmd on MQ

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- 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: Parav Pandit <parav.pandit@emulex.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Parav Pandit 2012-03-26 14:27:12 +00:00 committed by Roland Dreier
parent d48b97b403
commit 6a4ab669ad
1 changed files with 39 additions and 0 deletions
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39
drivers/net/ethernet/emulex/benet/be_cmds.c
View file

@ -15,6 +15,7 @@
* Costa Mesa, CA 92626
*/
#include <linux/module.h>
#include "be.h"
#include "be_cmds.h"
@ -2556,3 +2557,41 @@ int be_cmd_get_acpi_wol_cap(struct be_adapter *adapter)
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);