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/*******************************************************************************
*
* Intel Ethernet Controller XL710 Family Linux Driver
* Copyright(c) 2013 - 2014 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
******************************************************************************/
#ifndef _I40E_FCOE_H_
#define _I40E_FCOE_H_
/* FCoE HW context helper macros */
#define I40E_DDP_CONTEXT_DESC(R, i) \
(&(((struct i40e_fcoe_ddp_context_desc *)((R)->desc))[i]))
#define I40E_QUEUE_CONTEXT_DESC(R, i) \
(&(((struct i40e_fcoe_queue_context_desc *)((R)->desc))[i]))
#define I40E_FILTER_CONTEXT_DESC(R, i) \
(&(((struct i40e_fcoe_filter_context_desc *)((R)->desc))[i]))
/* receive queue descriptor filter status for FCoE */
#define I40E_RX_DESC_FLTSTAT_FCMASK 0x3
#define I40E_RX_DESC_FLTSTAT_NOMTCH 0x0 /* no ddp context match */
#define I40E_RX_DESC_FLTSTAT_NODDP 0x1 /* no ddp due to error */
#define I40E_RX_DESC_FLTSTAT_DDP 0x2 /* DDPed payload, post header */
#define I40E_RX_DESC_FLTSTAT_FCPRSP 0x3 /* FCP_RSP */
/* receive queue descriptor error codes for FCoE */
#define I40E_RX_DESC_FCOE_ERROR_MASK \
(I40E_RX_DESC_ERROR_L3L4E_PROT | \
I40E_RX_DESC_ERROR_L3L4E_FC | \
I40E_RX_DESC_ERROR_L3L4E_DMAC_ERR | \
I40E_RX_DESC_ERROR_L3L4E_DMAC_WARN)
/* receive queue descriptor programming error */
#define I40E_RX_PROG_FCOE_ERROR_TBL_FULL(e) \
(((e) >> I40E_RX_PROG_STATUS_DESC_FCOE_TBL_FULL_SHIFT) & 0x1)
#define I40E_RX_PROG_FCOE_ERROR_CONFLICT(e) \
(((e) >> I40E_RX_PROG_STATUS_DESC_FCOE_CONFLICT_SHIFT) & 0x1)
#define I40E_RX_PROG_FCOE_ERROR_TBL_FULL_BIT \
BIT(I40E_RX_PROG_STATUS_DESC_FCOE_TBL_FULL_SHIFT)
#define I40E_RX_PROG_FCOE_ERROR_CONFLICT_BIT \
BIT(I40E_RX_PROG_STATUS_DESC_FCOE_CONFLICT_SHIFT)
#define I40E_RX_PROG_FCOE_ERROR_INVLFAIL(e) \
I40E_RX_PROG_FCOE_ERROR_CONFLICT(e)
#define I40E_RX_PROG_FCOE_ERROR_INVLFAIL_BIT \
I40E_RX_PROG_FCOE_ERROR_CONFLICT_BIT
/* FCoE DDP related definitions */
#define I40E_FCOE_MIN_XID 0x0000 /* the min xid supported by fcoe_sw */
#define I40E_FCOE_MAX_XID 0x0FFF /* the max xid supported by fcoe_sw */
#define I40E_FCOE_DDP_BUFFCNT_MAX 512 /* 9 bits bufcnt */
#define I40E_FCOE_DDP_PTR_ALIGN 16
#define I40E_FCOE_DDP_PTR_MAX (I40E_FCOE_DDP_BUFFCNT_MAX * sizeof(dma_addr_t))
#define I40E_FCOE_DDP_BUF_MIN 4096
#define I40E_FCOE_DDP_MAX 2048
#define I40E_FCOE_FILTER_CTX_QW1_PCTYPE_SHIFT 8
/* supported netdev features for FCoE */
#define I40E_FCOE_NETIF_FEATURES (NETIF_F_ALL_FCOE | \
NETIF_F_HW_VLAN_CTAG_TX | \
NETIF_F_HW_VLAN_CTAG_RX | \
NETIF_F_HW_VLAN_CTAG_FILTER)
/* DDP context flags */
enum i40e_fcoe_ddp_flags {
__I40E_FCOE_DDP_NONE = 1,
__I40E_FCOE_DDP_TARGET,
__I40E_FCOE_DDP_INITALIZED,
__I40E_FCOE_DDP_PROGRAMMED,
__I40E_FCOE_DDP_DONE,
__I40E_FCOE_DDP_ABORTED,
__I40E_FCOE_DDP_UNMAPPED,
};
/* DDP SW context struct */
struct i40e_fcoe_ddp {
int len;
u16 xid;
u16 firstoff;
u16 lastsize;
u16 list_len;
u8 fcerr;
u8 prerr;
unsigned long flags;
unsigned int sgc;
struct scatterlist *sgl;
dma_addr_t udp;
u64 *udl;
struct dma_pool *pool;
};
struct i40e_fcoe_ddp_pool {
struct dma_pool *pool;
};
struct i40e_fcoe {
unsigned long mode;
atomic_t refcnt;
struct i40e_fcoe_ddp_pool __percpu *ddp_pool;
struct i40e_fcoe_ddp ddp[I40E_FCOE_DDP_MAX];
};
#endif /* _I40E_FCOE_H_ */
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