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Commit af19b491 authored by Amit Kumar Salecha's avatar Amit Kumar Salecha Committed by David S. Miller
Browse files

qlcnic: Qlogic ethernet driver for CNA devices 



o 1G/10G Ethernet Driver for Qlgic QLE8240 and QLE8242 CNA devices.

Signed-off-by: default avatarAmit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6eb3a855

drivers/net/qlcnic/Makefile

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#

# Makefile for Qlogic 1G/10G Ethernet Driver for CNA devices

#



obj-$(CONFIG_QLCNIC) := qlcnic.o



qlcnic-y := qlcnic_hw.o qlcnic_main.o qlcnic_init.o \

	qlcnic_ethtool.o qlcnic_ctx.o

drivers/net/qlcnic/qlcnic.h

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drivers/net/qlcnic/qlcnic_ctx.c

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/*

 * 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"



#define QLCHAL_VERSION	1



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;

}



static 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,

				QLCHAL_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 qlcnic_hostrq_sds_ring *prq_sds;

	struct qlcnic_cardrsp_rds_ring *prsp_rds;

	struct qlcnic_cardrsp_sds_ring *prsp_sds;

	struct qlcnic_host_rds_ring *rds_ring;

	struct qlcnic_host_sds_ring *sds_ring;



	dma_addr_t hostrq_phys_addr, cardrsp_phys_addr;

	u64 phys_addr;



	int i, nrds_rings, nsds_rings;

	size_t rq_size, rsp_size;

	u32 cap, reg, val;

	int err;



	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;



	nrds_rings = adapter->max_rds_rings;

	nsds_rings = adapter->max_sds_rings;



	rq_size =

		SIZEOF_HOSTRQ_RX(struct qlcnic_hostrq_rx_ctx, nrds_rings,

						nsds_rings);

	rsp_size =

		SIZEOF_CARDRSP_RX(struct qlcnic_cardrsp_rx_ctx, nrds_rings,

						nsds_rings);



	addr = pci_alloc_consistent(adapter->pdev,

				rq_size, &hostrq_phys_addr);

	if (addr == NULL)

		return -ENOMEM;

	prq = (struct qlcnic_hostrq_rx_ctx *)addr;



	addr = pci_alloc_consistent(adapter->pdev,

			rsp_size, &cardrsp_phys_addr);

	if (addr == NULL) {

		err = -ENOMEM;

		goto out_free_rq;

	}

	prsp = (struct qlcnic_cardrsp_rx_ctx *)addr;



	prq->host_rsp_dma_addr = cpu_to_le64(cardrsp_phys_addr);



	cap = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN);

	cap |= (QLCNIC_CAP0_JUMBO_CONTIGUOUS | QLCNIC_CAP0_LRO_CONTIGUOUS);



	prq->capabilities[0] = cpu_to_le32(cap);

	prq->host_int_crb_mode =

		cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);

	prq->host_rds_crb_mode =

		cpu_to_le32(QLCNIC_HOST_RDS_CRB_MODE_UNIQUE);



	prq->num_rds_rings = cpu_to_le16(nrds_rings);

	prq->num_sds_rings = cpu_to_le16(nsds_rings);

	prq->rds_ring_offset = cpu_to_le32(0);



	val = le32_to_cpu(prq->rds_ring_offset) +

		(sizeof(struct qlcnic_hostrq_rds_ring) * nrds_rings);

	prq->sds_ring_offset = cpu_to_le32(val);



	prq_rds = (struct qlcnic_hostrq_rds_ring *)(prq->data +

			le32_to_cpu(prq->rds_ring_offset));



	for (i = 0; i < nrds_rings; i++) {



		rds_ring = &recv_ctx->rds_rings[i];



		prq_rds[i].host_phys_addr = cpu_to_le64(rds_ring->phys_addr);

		prq_rds[i].ring_size = cpu_to_le32(rds_ring->num_desc);

		prq_rds[i].ring_kind = cpu_to_le32(i);

		prq_rds[i].buff_size = cpu_to_le64(rds_ring->dma_size);

	}



	prq_sds = (struct qlcnic_hostrq_sds_ring *)(prq->data +

			le32_to_cpu(prq->sds_ring_offset));



	for (i = 0; i < nsds_rings; i++) {



		sds_ring = &recv_ctx->sds_rings[i];



		prq_sds[i].host_phys_addr = cpu_to_le64(sds_ring->phys_addr);

		prq_sds[i].ring_size = cpu_to_le32(sds_ring->num_desc);

		prq_sds[i].msi_index = cpu_to_le16(i);

	}



	phys_addr = hostrq_phys_addr;

	err = qlcnic_issue_cmd(adapter,

			adapter->ahw.pci_func,

			QLCHAL_VERSION,

			(u32)(phys_addr >> 32),

			(u32)(phys_addr & 0xffffffff),

			rq_size,

			QLCNIC_CDRP_CMD_CREATE_RX_CTX);

	if (err) {

		dev_err(&adapter->pdev->dev,

			"Failed to create rx ctx in firmware%d\n", err);

		goto out_free_rsp;

	}





	prsp_rds = ((struct qlcnic_cardrsp_rds_ring *)

			 &prsp->data[le32_to_cpu(prsp->rds_ring_offset)]);



	for (i = 0; i < le16_to_cpu(prsp->num_rds_rings); i++) {

		rds_ring = &recv_ctx->rds_rings[i];



		reg = le32_to_cpu(prsp_rds[i].host_producer_crb);

		rds_ring->crb_rcv_producer = qlcnic_get_ioaddr(adapter,

				QLCNIC_REG(reg - 0x200));

	}



	prsp_sds = ((struct qlcnic_cardrsp_sds_ring *)

			&prsp->data[le32_to_cpu(prsp->sds_ring_offset)]);



	for (i = 0; i < le16_to_cpu(prsp->num_sds_rings); i++) {

		sds_ring = &recv_ctx->sds_rings[i];



		reg = le32_to_cpu(prsp_sds[i].host_consumer_crb);

		sds_ring->crb_sts_consumer = qlcnic_get_ioaddr(adapter,

				QLCNIC_REG(reg - 0x200));



		reg = le32_to_cpu(prsp_sds[i].interrupt_crb);

		sds_ring->crb_intr_mask = qlcnic_get_ioaddr(adapter,

				QLCNIC_REG(reg - 0x200));

	}



	recv_ctx->state = le32_to_cpu(prsp->host_ctx_state);

	recv_ctx->context_id = le16_to_cpu(prsp->context_id);

	recv_ctx->virt_port = prsp->virt_port;



out_free_rsp:

	pci_free_consistent(adapter->pdev, rsp_size, prsp, cardrsp_phys_addr);

out_free_rq:

	pci_free_consistent(adapter->pdev, rq_size, prq, hostrq_phys_addr);

	return err;

}



static void

qlcnic_fw_cmd_destroy_rx_ctx(struct qlcnic_adapter *adapter)

{

	struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;



	if (qlcnic_issue_cmd(adapter,

			adapter->ahw.pci_func,

			QLCHAL_VERSION,

			recv_ctx->context_id,

			QLCNIC_DESTROY_CTX_RESET,

			0,

			QLCNIC_CDRP_CMD_DESTROY_RX_CTX)) {



		dev_err(&adapter->pdev->dev,

			"Failed to destroy rx ctx in firmware\n");

	}

}



static int

qlcnic_fw_cmd_create_tx_ctx(struct qlcnic_adapter *adapter)

{

	struct qlcnic_hostrq_tx_ctx	*prq;

	struct qlcnic_hostrq_cds_ring	*prq_cds;

	struct qlcnic_cardrsp_tx_ctx	*prsp;

	void	*rq_addr, *rsp_addr;

	size_t	rq_size, rsp_size;

	u32	temp;

	int	err;

	u64	phys_addr;

	dma_addr_t	rq_phys_addr, rsp_phys_addr;

	struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;



	rq_size = SIZEOF_HOSTRQ_TX(struct qlcnic_hostrq_tx_ctx);

	rq_addr = pci_alloc_consistent(adapter->pdev,

		rq_size, &rq_phys_addr);

	if (!rq_addr)

		return -ENOMEM;



	rsp_size = SIZEOF_CARDRSP_TX(struct qlcnic_cardrsp_tx_ctx);

	rsp_addr = pci_alloc_consistent(adapter->pdev,

		rsp_size, &rsp_phys_addr);

	if (!rsp_addr) {

		err = -ENOMEM;

		goto out_free_rq;

	}



	memset(rq_addr, 0, rq_size);

	prq = (struct qlcnic_hostrq_tx_ctx *)rq_addr;



	memset(rsp_addr, 0, rsp_size);

	prsp = (struct qlcnic_cardrsp_tx_ctx *)rsp_addr;



	prq->host_rsp_dma_addr = cpu_to_le64(rsp_phys_addr);



	temp = (QLCNIC_CAP0_LEGACY_CONTEXT | QLCNIC_CAP0_LEGACY_MN |

					QLCNIC_CAP0_LSO);

	prq->capabilities[0] = cpu_to_le32(temp);



	prq->host_int_crb_mode =

		cpu_to_le32(QLCNIC_HOST_INT_CRB_MODE_SHARED);



	prq->interrupt_ctl = 0;

	prq->msi_index = 0;

	prq->cmd_cons_dma_addr = cpu_to_le64(tx_ring->hw_cons_phys_addr);



	prq_cds = &prq->cds_ring;



	prq_cds->host_phys_addr = cpu_to_le64(tx_ring->phys_addr);

	prq_cds->ring_size = cpu_to_le32(tx_ring->num_desc);



	phys_addr = rq_phys_addr;

	err = qlcnic_issue_cmd(adapter,

			adapter->ahw.pci_func,

			QLCHAL_VERSION,

			(u32)(phys_addr >> 32),

			((u32)phys_addr & 0xffffffff),

			rq_size,

			QLCNIC_CDRP_CMD_CREATE_TX_CTX);



	if (err == QLCNIC_RCODE_SUCCESS) {

		temp = le32_to_cpu(prsp->cds_ring.host_producer_crb);

		tx_ring->crb_cmd_producer = qlcnic_get_ioaddr(adapter,

				QLCNIC_REG(temp - 0x200));



		adapter->tx_context_id =

			le16_to_cpu(prsp->context_id);

	} else {

		dev_err(&adapter->pdev->dev,

			"Failed to create tx ctx in firmware%d\n", err);

		err = -EIO;

	}



	pci_free_consistent(adapter->pdev, rsp_size, rsp_addr, rsp_phys_addr);



out_free_rq:

	pci_free_consistent(adapter->pdev, rq_size, rq_addr, rq_phys_addr);



	return err;

}



static void

qlcnic_fw_cmd_destroy_tx_ctx(struct qlcnic_adapter *adapter)

{

	if (qlcnic_issue_cmd(adapter,

			adapter->ahw.pci_func,

			QLCHAL_VERSION,

			adapter->tx_context_id,

			QLCNIC_DESTROY_CTX_RESET,

			0,

			QLCNIC_CDRP_CMD_DESTROY_TX_CTX)) {



		dev_err(&adapter->pdev->dev,

			"Failed to destroy tx ctx in firmware\n");

	}

}



int

qlcnic_fw_cmd_query_phy(struct qlcnic_adapter *adapter, u32 reg, u32 *val)

{



	if (qlcnic_issue_cmd(adapter,

			adapter->ahw.pci_func,

			QLCHAL_VERSION,

			reg,

			0,

			0,

			QLCNIC_CDRP_CMD_READ_PHY)) {



		return -EIO;

	}



	return QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);

}



int

qlcnic_fw_cmd_set_phy(struct qlcnic_adapter *adapter, u32 reg, u32 val)

{

	return qlcnic_issue_cmd(adapter,

			adapter->ahw.pci_func,

			QLCHAL_VERSION,

			reg,

			val,

			0,

			QLCNIC_CDRP_CMD_WRITE_PHY);

}



int qlcnic_alloc_hw_resources(struct qlcnic_adapter *adapter)

{

	void *addr;

	int err;

	int ring;

	struct qlcnic_recv_context *recv_ctx;

	struct qlcnic_host_rds_ring *rds_ring;

	struct qlcnic_host_sds_ring *sds_ring;

	struct qlcnic_host_tx_ring *tx_ring;



	struct pci_dev *pdev = adapter->pdev;



	recv_ctx = &adapter->recv_ctx;

	tx_ring = adapter->tx_ring;



	tx_ring->hw_consumer = (__le32 *)pci_alloc_consistent(pdev, sizeof(u32),

						&tx_ring->hw_cons_phys_addr);

	if (tx_ring->hw_consumer == NULL) {

		dev_err(&pdev->dev, "failed to allocate tx consumer\n");

		return -ENOMEM;

	}

	*(tx_ring->hw_consumer) = 0;



	/* cmd desc ring */

	addr = pci_alloc_consistent(pdev, TX_DESC_RINGSIZE(tx_ring),

			&tx_ring->phys_addr);



	if (addr == NULL) {

		dev_err(&pdev->dev, "failed to allocate tx desc ring\n");

		return -ENOMEM;

	}



	tx_ring->desc_head = (struct cmd_desc_type0 *)addr;



	for (ring = 0; ring < adapter->max_rds_rings; ring++) {

		rds_ring = &recv_ctx->rds_rings[ring];

		addr = pci_alloc_consistent(adapter->pdev,

				RCV_DESC_RINGSIZE(rds_ring),

				&rds_ring->phys_addr);

		if (addr == NULL) {

			dev_err(&pdev->dev,

				"failed to allocate rds ring [%d]\n", ring);

			err = -ENOMEM;

			goto err_out_free;

		}

		rds_ring->desc_head = (struct rcv_desc *)addr;



	}



	for (ring = 0; ring < adapter->max_sds_rings; ring++) {

		sds_ring = &recv_ctx->sds_rings[ring];



		addr = pci_alloc_consistent(adapter->pdev,

				STATUS_DESC_RINGSIZE(sds_ring),

				&sds_ring->phys_addr);

		if (addr == NULL) {

			dev_err(&pdev->dev,

				"failed to allocate sds ring [%d]\n", ring);

			err = -ENOMEM;

			goto err_out_free;

		}

		sds_ring->desc_head = (struct status_desc *)addr;

	}





	err = qlcnic_fw_cmd_create_rx_ctx(adapter);

	if (err)

		goto err_out_free;

	err = qlcnic_fw_cmd_create_tx_ctx(adapter);

	if (err)

		goto err_out_free;



	set_bit(__QLCNIC_FW_ATTACHED, &adapter->state);

	return 0;



err_out_free:

	qlcnic_free_hw_resources(adapter);

	return err;

}



void qlcnic_free_hw_resources(struct qlcnic_adapter *adapter)

{

	struct qlcnic_recv_context *recv_ctx;

	struct qlcnic_host_rds_ring *rds_ring;

	struct qlcnic_host_sds_ring *sds_ring;

	struct qlcnic_host_tx_ring *tx_ring;

	int ring;





	if (test_and_clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state)) {

		qlcnic_fw_cmd_destroy_rx_ctx(adapter);

		qlcnic_fw_cmd_destroy_tx_ctx(adapter);



		/* Allow dma queues to drain after context reset */

		msleep(20);

	}



	recv_ctx = &adapter->recv_ctx;



	tx_ring = adapter->tx_ring;

	if (tx_ring->hw_consumer != NULL) {

		pci_free_consistent(adapter->pdev,

				sizeof(u32),

				tx_ring->hw_consumer,

				tx_ring->hw_cons_phys_addr);

		tx_ring->hw_consumer = NULL;

	}



	if (tx_ring->desc_head != NULL) {

		pci_free_consistent(adapter->pdev,

				TX_DESC_RINGSIZE(tx_ring),

				tx_ring->desc_head, tx_ring->phys_addr);

		tx_ring->desc_head = NULL;

	}



	for (ring = 0; ring < adapter->max_rds_rings; ring++) {

		rds_ring = &recv_ctx->rds_rings[ring];



		if (rds_ring->desc_head != NULL) {

			pci_free_consistent(adapter->pdev,

					RCV_DESC_RINGSIZE(rds_ring),

					rds_ring->desc_head,

					rds_ring->phys_addr);

			rds_ring->desc_head = NULL;

		}

	}



	for (ring = 0; ring < adapter->max_sds_rings; ring++) {

		sds_ring = &recv_ctx->sds_rings[ring];



		if (sds_ring->desc_head != NULL) {

			pci_free_consistent(adapter->pdev,

				STATUS_DESC_RINGSIZE(sds_ring),

				sds_ring->desc_head,

				sds_ring->phys_addr);

			sds_ring->desc_head = NULL;

		}

	}

}

drivers/net/qlcnic/qlcnic_ethtool.c

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drivers/net/qlcnic/qlcnic_hdr.h

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