path: root/drivers/net/qlcnic/qlcnic_ctx.c

/*
 * Copyright (C) 2009 - QLogic Corporation.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called "COPYING".
 *
 */

#include "qlcnic.h"

static u32
qlcnic_poll_rsp(struct qlcnic_adapter *adapter)
{
	u32 rsp;
	int timeout = 0;

	do {
		/* give atleast 1ms for firmware to respond */
		msleep(1);

		if (++timeout > QLCNIC_OS_CRB_RETRY_COUNT)
			return QLCNIC_CDRP_RSP_TIMEOUT;

		rsp = QLCRD32(adapter, QLCNIC_CDRP_CRB_OFFSET);
	} while (!QLCNIC_CDRP_IS_RSP(rsp));

	return rsp;
}

u32
qlcnic_issue_cmd(struct qlcnic_adapter *adapter,
	u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd)
{
	u32 rsp;
	u32 signature;
	u32 rcode = QLCNIC_RCODE_SUCCESS;
	struct pci_dev *pdev = adapter->pdev;

	signature = QLCNIC_CDRP_SIGNATURE_MAKE(pci_fn, version);

	/* Acquire semaphore before accessing CRB */
	if (qlcnic_api_lock(adapter))
		return QLCNIC_RCODE_TIMEOUT;

	QLCWR32(adapter, QLCNIC_SIGN_CRB_OFFSET, signature);
	QLCWR32(adapter, QLCNIC_ARG1_CRB_OFFSET, arg1);
	QLCWR32(adapter, QLCNIC_ARG2_CRB_OFFSET, arg2);
	QLCWR32(adapter, QLCNIC_ARG3_CRB_OFFSET, arg3);
	QLCWR32(adapter, QLCNIC_CDRP_CRB_OFFSET, QLCNIC_CDRP_FORM_CMD(cmd));

	rsp = qlcnic_poll_rsp(adapter);

	if (rsp == QLCNIC_CDRP_RSP_TIMEOUT) {
		dev_err(&pdev->dev, "card response timeout.\n");
		rcode = QLCNIC_RCODE_TIMEOUT;
	} else if (rsp == QLCNIC_CDRP_RSP_FAIL) {
		rcode = QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
		dev_err(&pdev->dev, "failed card response code:0x%x\n",
				rcode);
	}

	/* Release semaphore */
	qlcnic_api_unlock(adapter);

	return rcode;
}

int
qlcnic_fw_cmd_set_mtu(struct qlcnic_adapter *adapter, int mtu)
{
	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;

	if (recv_ctx->state == QLCNIC_HOST_CTX_STATE_ACTIVE) {
		if (qlcnic_issue_cmd(adapter,
			adapter->ahw.pci_func,
			adapter->fw_hal_version,
			recv_ctx->context_id,
			mtu,
			0,
			QLCNIC_CDRP_CMD_SET_MTU)) {

			dev_err(&adapter->pdev->dev, "Failed to set mtu\n");
			return -EIO;
		}
	}

	return 0;
}

static int
qlcnic_fw_cmd_create_rx_ctx(struct qlcnic_adapter *adapter)
{
	void *addr;
	struct qlcnic_hostrq_rx_ctx *prq;
	struct qlcnic_cardrsp_rx_ctx *prsp;
	struct qlcnic_hostrq_rds_ring *prq_rds;
	struct