1 /******************************************************************************* 2 * 3 * Intel Ethernet Controller XL710 Family Linux Driver 4 * Copyright(c) 2013 - 2014 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 16 * with this program. If not, see <http://www.gnu.org/licenses/>. 17 * 18 * The full GNU General Public License is included in this distribution in 19 * the file called "COPYING". 20 * 21 * Contact Information: 22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 24 * 25 ******************************************************************************/ 26 27 #ifndef _I40E_FCOE_H_ 28 #define _I40E_FCOE_H_ 29 30 /* FCoE HW context helper macros */ 31 #define I40E_DDP_CONTEXT_DESC(R, i) \ 32 (&(((struct i40e_fcoe_ddp_context_desc *)((R)->desc))[i])) 33 34 #define I40E_QUEUE_CONTEXT_DESC(R, i) \ 35 (&(((struct i40e_fcoe_queue_context_desc *)((R)->desc))[i])) 36 37 #define I40E_FILTER_CONTEXT_DESC(R, i) \ 38 (&(((struct i40e_fcoe_filter_context_desc *)((R)->desc))[i])) 39 40 /* receive queue descriptor filter status for FCoE */ 41 #define I40E_RX_DESC_FLTSTAT_FCMASK 0x3 42 #define I40E_RX_DESC_FLTSTAT_NOMTCH 0x0 /* no ddp context match */ 43 #define I40E_RX_DESC_FLTSTAT_NODDP 0x1 /* no ddp due to error */ 44 #define I40E_RX_DESC_FLTSTAT_DDP 0x2 /* DDPed payload, post header */ 45 #define I40E_RX_DESC_FLTSTAT_FCPRSP 0x3 /* FCP_RSP */ 46 47 /* receive queue descriptor error codes for FCoE */ 48 #define I40E_RX_DESC_FCOE_ERROR_MASK \ 49 (I40E_RX_DESC_ERROR_L3L4E_PROT | \ 50 I40E_RX_DESC_ERROR_L3L4E_FC | \ 51 I40E_RX_DESC_ERROR_L3L4E_DMAC_ERR | \ 52 I40E_RX_DESC_ERROR_L3L4E_DMAC_WARN) 53 54 /* receive queue descriptor programming error */ 55 #define I40E_RX_PROG_FCOE_ERROR_TBL_FULL(e) \ 56 (((e) >> I40E_RX_PROG_STATUS_DESC_FCOE_TBL_FULL_SHIFT) & 0x1) 57 58 #define I40E_RX_PROG_FCOE_ERROR_CONFLICT(e) \ 59 (((e) >> I40E_RX_PROG_STATUS_DESC_FCOE_CONFLICT_SHIFT) & 0x1) 60 61 #define I40E_RX_PROG_FCOE_ERROR_TBL_FULL_BIT \ 62 BIT(I40E_RX_PROG_STATUS_DESC_FCOE_TBL_FULL_SHIFT) 63 #define I40E_RX_PROG_FCOE_ERROR_CONFLICT_BIT \ 64 BIT(I40E_RX_PROG_STATUS_DESC_FCOE_CONFLICT_SHIFT) 65 66 #define I40E_RX_PROG_FCOE_ERROR_INVLFAIL(e) \ 67 I40E_RX_PROG_FCOE_ERROR_CONFLICT(e) 68 #define I40E_RX_PROG_FCOE_ERROR_INVLFAIL_BIT \ 69 I40E_RX_PROG_FCOE_ERROR_CONFLICT_BIT 70 71 /* FCoE DDP related definitions */ 72 #define I40E_FCOE_MIN_XID 0x0000 /* the min xid supported by fcoe_sw */ 73 #define I40E_FCOE_MAX_XID 0x0FFF /* the max xid supported by fcoe_sw */ 74 #define I40E_FCOE_DDP_BUFFCNT_MAX 512 /* 9 bits bufcnt */ 75 #define I40E_FCOE_DDP_PTR_ALIGN 16 76 #define I40E_FCOE_DDP_PTR_MAX (I40E_FCOE_DDP_BUFFCNT_MAX * sizeof(dma_addr_t)) 77 #define I40E_FCOE_DDP_BUF_MIN 4096 78 #define I40E_FCOE_DDP_MAX 2048 79 #define I40E_FCOE_FILTER_CTX_QW1_PCTYPE_SHIFT 8 80 81 /* supported netdev features for FCoE */ 82 #define I40E_FCOE_NETIF_FEATURES (NETIF_F_ALL_FCOE | \ 83 NETIF_F_HW_VLAN_CTAG_TX | \ 84 NETIF_F_HW_VLAN_CTAG_RX | \ 85 NETIF_F_HW_VLAN_CTAG_FILTER) 86 87 /* DDP context flags */ 88 enum i40e_fcoe_ddp_flags { 89 __I40E_FCOE_DDP_NONE = 1, 90 __I40E_FCOE_DDP_TARGET, 91 __I40E_FCOE_DDP_INITALIZED, 92 __I40E_FCOE_DDP_PROGRAMMED, 93 __I40E_FCOE_DDP_DONE, 94 __I40E_FCOE_DDP_ABORTED, 95 __I40E_FCOE_DDP_UNMAPPED, 96 }; 97 98 /* DDP SW context struct */ 99 struct i40e_fcoe_ddp { 100 int len; 101 u16 xid; 102 u16 firstoff; 103 u16 lastsize; 104 u16 list_len; 105 u8 fcerr; 106 u8 prerr; 107 unsigned long flags; 108 unsigned int sgc; 109 struct scatterlist *sgl; 110 dma_addr_t udp; 111 u64 *udl; 112 struct dma_pool *pool; 113 114 }; 115 116 struct i40e_fcoe_ddp_pool { 117 struct dma_pool *pool; 118 }; 119 120 struct i40e_fcoe { 121 unsigned long mode; 122 atomic_t refcnt; 123 struct i40e_fcoe_ddp_pool __percpu *ddp_pool; 124 struct i40e_fcoe_ddp ddp[I40E_FCOE_DDP_MAX]; 125 }; 126 127 #endif /* _I40E_FCOE_H_ */ 128