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Commit 5df6d737 authored by Abhijeet Joglekar's avatar Abhijeet Joglekar Committed by James Bottomley
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[SCSI] fnic: Add new Cisco PCI-Express FCoE HBA 



fnic is a driver for the Cisco PCI-Express FCoE HBA

Signed-off-by: default avatarAbhijeet Joglekar <abjoglek@cisco.com>
Signed-off-by: default avatarJoe Eykholt <jeykholt@cisco.com>
Signed-off-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 210af919

MAINTAINERS

+8 −0
Original line number Original line Diff line number Diff line
@@ -1431,6 +1431,14 @@ P: Russell King 
M:	linux@arm.linux.org.uk

M:	linux@arm.linux.org.uk

F:	include/linux/clk.h

F:	include/linux/clk.h





CISCO FCOE HBA DRIVER

P:	Abhijeet Joglekar

M:	abjoglek@cisco.com

P:	Joe Eykholt

M:	jeykholt@cisco.com

L:	linux-scsi@vger.kernel.org

S:	Supported



CODA FILE SYSTEM

CODA FILE SYSTEM

P:	Jan Harkes

P:	Jan Harkes

M:	jaharkes@cs.cmu.edu

M:	jaharkes@cs.cmu.edu

drivers/scsi/Kconfig

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@@ -628,6 +628,17 @@ config FCOE 
	---help---

	---help---

	  Fibre Channel over Ethernet module

	  Fibre Channel over Ethernet module





config FCOE_FNIC

	tristate "Cisco FNIC Driver"

	depends on PCI && X86

	select LIBFC

	help

	  This is support for the Cisco PCI-Express FCoE HBA.



	  To compile this driver as a module, choose M here and read

	  <file:Documentation/scsi/scsi.txt>.

	  The module will be called fnic.



config SCSI_DMX3191D

config SCSI_DMX3191D

	tristate "DMX3191D SCSI support"

	tristate "DMX3191D SCSI support"

	depends on PCI && SCSI

	depends on PCI && SCSI

drivers/scsi/Makefile

+1 −0
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@@ -39,6 +39,7 @@ obj-$(CONFIG_SCSI_DH) += device_handler/ 
obj-$(CONFIG_LIBFC)		+= libfc/

obj-$(CONFIG_LIBFC)		+= libfc/

obj-$(CONFIG_LIBFCOE)		+= fcoe/

obj-$(CONFIG_LIBFCOE)		+= fcoe/

obj-$(CONFIG_FCOE)		+= fcoe/

obj-$(CONFIG_FCOE)		+= fcoe/

obj-$(CONFIG_FCOE_FNIC)		+= fnic/

obj-$(CONFIG_ISCSI_TCP) 	+= libiscsi.o	libiscsi_tcp.o iscsi_tcp.o

obj-$(CONFIG_ISCSI_TCP) 	+= libiscsi.o	libiscsi_tcp.o iscsi_tcp.o

obj-$(CONFIG_INFINIBAND_ISER) 	+= libiscsi.o

obj-$(CONFIG_INFINIBAND_ISER) 	+= libiscsi.o

obj-$(CONFIG_SCSI_A4000T)	+= 53c700.o	a4000t.o

obj-$(CONFIG_SCSI_A4000T)	+= 53c700.o	a4000t.o

drivers/scsi/fnic/Makefile

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obj-$(CONFIG_FCOE_FNIC) += fnic.o



fnic-y	:= \

	fnic_attrs.o \

	fnic_isr.o \

	fnic_main.o \

	fnic_res.o \

	fnic_fcs.o \

	fnic_scsi.o \

	vnic_cq.o \

	vnic_dev.o \

	vnic_intr.o \

	vnic_rq.o \

	vnic_wq_copy.o \

	vnic_wq.o

drivers/scsi/fnic/cq_desc.h

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/*

 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.

 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.

 *

 * This program is free software; you may redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; version 2 of the License.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 */

#ifndef _CQ_DESC_H_

#define _CQ_DESC_H_



/*

 * Completion queue descriptor types

 */

enum cq_desc_types {

	CQ_DESC_TYPE_WQ_ENET = 0,

	CQ_DESC_TYPE_DESC_COPY = 1,

	CQ_DESC_TYPE_WQ_EXCH = 2,

	CQ_DESC_TYPE_RQ_ENET = 3,

	CQ_DESC_TYPE_RQ_FCP = 4,

};



/* Completion queue descriptor: 16B

 *

 * All completion queues have this basic layout.  The

 * type_specfic area is unique for each completion

 * queue type.

 */

struct cq_desc {

	__le16 completed_index;

	__le16 q_number;

	u8 type_specfic[11];

	u8 type_color;

};



#define CQ_DESC_TYPE_BITS        4

#define CQ_DESC_TYPE_MASK        ((1 << CQ_DESC_TYPE_BITS) - 1)

#define CQ_DESC_COLOR_MASK       1

#define CQ_DESC_COLOR_SHIFT      7

#define CQ_DESC_Q_NUM_BITS       10

#define CQ_DESC_Q_NUM_MASK       ((1 << CQ_DESC_Q_NUM_BITS) - 1)

#define CQ_DESC_COMP_NDX_BITS    12

#define CQ_DESC_COMP_NDX_MASK    ((1 << CQ_DESC_COMP_NDX_BITS) - 1)



static inline void cq_desc_dec(const struct cq_desc *desc_arg,

	u8 *type, u8 *color, u16 *q_number, u16 *completed_index)

{

	const struct cq_desc *desc = desc_arg;

	const u8 type_color = desc->type_color;



	*color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK;



	/*

	 * Make sure color bit is read from desc *before* other fields

	 * are read from desc.  Hardware guarantees color bit is last

	 * bit (byte) written.  Adding the rmb() prevents the compiler

	 * and/or CPU from reordering the reads which would potentially

	 * result in reading stale values.

	 */



	rmb();



	*type = type_color & CQ_DESC_TYPE_MASK;

	*q_number = le16_to_cpu(desc->q_number) & CQ_DESC_Q_NUM_MASK;

	*completed_index = le16_to_cpu(desc->completed_index) &

		CQ_DESC_COMP_NDX_MASK;

}



#endif /* _CQ_DESC_H_ */