1/******************************************************************************* 2 3 Intel 10 Gigabit PCI Express Linux driver 4 Copyright(c) 1999 - 2013 Intel Corporation. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program; if not, write to the Free Software Foundation, Inc., 17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18 19 The full GNU General Public License is included in this distribution in 20 the file called "COPYING". 21 22 Contact Information: 23 Linux NICS <linux.nics@intel.com> 24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 26 27*******************************************************************************/ 28 29#ifndef _IXGBE_FCOE_H 30#define _IXGBE_FCOE_H 31 32#include <scsi/fc/fc_fs.h> 33#include <scsi/fc/fc_fcoe.h> 34 35/* shift bits within STAT fo FCSTAT */ 36#define IXGBE_RXDADV_FCSTAT_SHIFT 4 37 38/* ddp user buffer */ 39#define IXGBE_BUFFCNT_MAX 256 /* 8 bits bufcnt */ 40#define IXGBE_FCPTR_ALIGN 16 41#define IXGBE_FCPTR_MAX (IXGBE_BUFFCNT_MAX * sizeof(dma_addr_t)) 42#define IXGBE_FCBUFF_4KB 0x0 43#define IXGBE_FCBUFF_8KB 0x1 44#define IXGBE_FCBUFF_16KB 0x2 45#define IXGBE_FCBUFF_64KB 0x3 46#define IXGBE_FCBUFF_MAX 65536 /* 64KB max */ 47#define IXGBE_FCBUFF_MIN 4096 /* 4KB min */ 48#define IXGBE_FCOE_DDP_MAX 512 /* 9 bits xid */ 49 50/* Default traffic class to use for FCoE */ 51#define IXGBE_FCOE_DEFTC 3 52 53/* fcerr */ 54#define IXGBE_FCERR_BADCRC 0x00100000 55 56/* FCoE DDP for target mode */ 57#define __IXGBE_FCOE_TARGET 1 58 59struct ixgbe_fcoe_ddp { 60 int len; 61 u32 err; 62 unsigned int sgc; 63 struct scatterlist *sgl; 64 dma_addr_t udp; 65 u64 *udl; 66 struct dma_pool *pool; 67}; 68 69/* per cpu variables */ 70struct ixgbe_fcoe_ddp_pool { 71 struct dma_pool *pool; 72 u64 noddp; 73 u64 noddp_ext_buff; 74}; 75 76struct ixgbe_fcoe { 77 struct ixgbe_fcoe_ddp_pool __percpu *ddp_pool; 78 atomic_t refcnt; 79 spinlock_t lock; 80 struct ixgbe_fcoe_ddp ddp[IXGBE_FCOE_DDP_MAX]; 81 void *extra_ddp_buffer; 82 dma_addr_t extra_ddp_buffer_dma; 83 unsigned long mode; 84 u8 up; 85}; 86 87#endif /* _IXGBE_FCOE_H */ 88