128 lines
4.1 KiB
C
128 lines
4.1 KiB
C
/*******************************************************************************
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*
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* Intel Ethernet Controller XL710 Family Linux Driver
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* Copyright(c) 2013 - 2014 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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******************************************************************************/
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#ifndef _I40E_FCOE_H_
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#define _I40E_FCOE_H_
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/* FCoE HW context helper macros */
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#define I40E_DDP_CONTEXT_DESC(R, i) \
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(&(((struct i40e_fcoe_ddp_context_desc *)((R)->desc))[i]))
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#define I40E_QUEUE_CONTEXT_DESC(R, i) \
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(&(((struct i40e_fcoe_queue_context_desc *)((R)->desc))[i]))
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#define I40E_FILTER_CONTEXT_DESC(R, i) \
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(&(((struct i40e_fcoe_filter_context_desc *)((R)->desc))[i]))
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/* receive queue descriptor filter status for FCoE */
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#define I40E_RX_DESC_FLTSTAT_FCMASK 0x3
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#define I40E_RX_DESC_FLTSTAT_NOMTCH 0x0 /* no ddp context match */
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#define I40E_RX_DESC_FLTSTAT_NODDP 0x1 /* no ddp due to error */
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#define I40E_RX_DESC_FLTSTAT_DDP 0x2 /* DDPed payload, post header */
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#define I40E_RX_DESC_FLTSTAT_FCPRSP 0x3 /* FCP_RSP */
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/* receive queue descriptor error codes for FCoE */
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#define I40E_RX_DESC_FCOE_ERROR_MASK \
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(I40E_RX_DESC_ERROR_L3L4E_PROT | \
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I40E_RX_DESC_ERROR_L3L4E_FC | \
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I40E_RX_DESC_ERROR_L3L4E_DMAC_ERR | \
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I40E_RX_DESC_ERROR_L3L4E_DMAC_WARN)
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/* receive queue descriptor programming error */
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#define I40E_RX_PROG_FCOE_ERROR_TBL_FULL(e) \
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(((e) >> I40E_RX_PROG_STATUS_DESC_FCOE_TBL_FULL_SHIFT) & 0x1)
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#define I40E_RX_PROG_FCOE_ERROR_CONFLICT(e) \
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(((e) >> I40E_RX_PROG_STATUS_DESC_FCOE_CONFLICT_SHIFT) & 0x1)
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#define I40E_RX_PROG_FCOE_ERROR_TBL_FULL_BIT \
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(1 << I40E_RX_PROG_STATUS_DESC_FCOE_TBL_FULL_SHIFT)
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#define I40E_RX_PROG_FCOE_ERROR_CONFLICT_BIT \
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(1 << I40E_RX_PROG_STATUS_DESC_FCOE_CONFLICT_SHIFT)
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#define I40E_RX_PROG_FCOE_ERROR_INVLFAIL(e) \
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I40E_RX_PROG_FCOE_ERROR_CONFLICT(e)
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#define I40E_RX_PROG_FCOE_ERROR_INVLFAIL_BIT \
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I40E_RX_PROG_FCOE_ERROR_CONFLICT_BIT
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/* FCoE DDP related definitions */
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#define I40E_FCOE_MIN_XID 0x0000 /* the min xid supported by fcoe_sw */
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#define I40E_FCOE_MAX_XID 0x0FFF /* the max xid supported by fcoe_sw */
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#define I40E_FCOE_DDP_BUFFCNT_MAX 512 /* 9 bits bufcnt */
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#define I40E_FCOE_DDP_PTR_ALIGN 16
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#define I40E_FCOE_DDP_PTR_MAX (I40E_FCOE_DDP_BUFFCNT_MAX * sizeof(dma_addr_t))
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#define I40E_FCOE_DDP_BUF_MIN 4096
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#define I40E_FCOE_DDP_MAX 2048
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#define I40E_FCOE_FILTER_CTX_QW1_PCTYPE_SHIFT 8
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/* supported netdev features for FCoE */
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#define I40E_FCOE_NETIF_FEATURES (NETIF_F_ALL_FCOE | \
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NETIF_F_HW_VLAN_CTAG_TX | \
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NETIF_F_HW_VLAN_CTAG_RX | \
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NETIF_F_HW_VLAN_CTAG_FILTER)
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/* DDP context flags */
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enum i40e_fcoe_ddp_flags {
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__I40E_FCOE_DDP_NONE = 1,
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__I40E_FCOE_DDP_TARGET,
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__I40E_FCOE_DDP_INITALIZED,
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__I40E_FCOE_DDP_PROGRAMMED,
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__I40E_FCOE_DDP_DONE,
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__I40E_FCOE_DDP_ABORTED,
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__I40E_FCOE_DDP_UNMAPPED,
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};
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/* DDP SW context struct */
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struct i40e_fcoe_ddp {
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int len;
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u16 xid;
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u16 firstoff;
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u16 lastsize;
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u16 list_len;
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u8 fcerr;
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u8 prerr;
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unsigned long flags;
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unsigned int sgc;
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struct scatterlist *sgl;
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dma_addr_t udp;
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u64 *udl;
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struct dma_pool *pool;
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};
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struct i40e_fcoe_ddp_pool {
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struct dma_pool *pool;
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};
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struct i40e_fcoe {
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unsigned long mode;
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atomic_t refcnt;
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struct i40e_fcoe_ddp_pool __percpu *ddp_pool;
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struct i40e_fcoe_ddp ddp[I40E_FCOE_DDP_MAX];
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};
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#endif /* _I40E_FCOE_H_ */
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