Bryan O'Sullivan | 889ab79 | 2006-03-29 15:23:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. |
| 3 | * |
| 4 | * This software is available to you under a choice of one of two |
| 5 | * licenses. You may choose to be licensed under the terms of the GNU |
| 6 | * General Public License (GPL) Version 2, available from the file |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | */ |
| 32 | |
| 33 | #ifndef _IPATH_LAYER_H |
| 34 | #define _IPATH_LAYER_H |
| 35 | |
| 36 | /* |
| 37 | * This header file is for symbols shared between the infinipath driver |
| 38 | * and drivers layered upon it (such as ipath). |
| 39 | */ |
| 40 | |
| 41 | struct sk_buff; |
| 42 | struct ipath_sge_state; |
| 43 | struct ipath_devdata; |
| 44 | struct ether_header; |
| 45 | |
| 46 | struct ipath_layer_counters { |
| 47 | u64 symbol_error_counter; |
| 48 | u64 link_error_recovery_counter; |
| 49 | u64 link_downed_counter; |
| 50 | u64 port_rcv_errors; |
| 51 | u64 port_rcv_remphys_errors; |
| 52 | u64 port_xmit_discards; |
| 53 | u64 port_xmit_data; |
| 54 | u64 port_rcv_data; |
| 55 | u64 port_xmit_packets; |
| 56 | u64 port_rcv_packets; |
| 57 | }; |
| 58 | |
| 59 | /* |
| 60 | * A segment is a linear region of low physical memory. |
| 61 | * XXX Maybe we should use phys addr here and kmap()/kunmap(). |
| 62 | * Used by the verbs layer. |
| 63 | */ |
| 64 | struct ipath_seg { |
| 65 | void *vaddr; |
| 66 | size_t length; |
| 67 | }; |
| 68 | |
| 69 | /* The number of ipath_segs that fit in a page. */ |
| 70 | #define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg)) |
| 71 | |
| 72 | struct ipath_segarray { |
| 73 | struct ipath_seg segs[IPATH_SEGSZ]; |
| 74 | }; |
| 75 | |
| 76 | struct ipath_mregion { |
| 77 | u64 user_base; /* User's address for this region */ |
| 78 | u64 iova; /* IB start address of this region */ |
| 79 | size_t length; |
| 80 | u32 lkey; |
| 81 | u32 offset; /* offset (bytes) to start of region */ |
| 82 | int access_flags; |
| 83 | u32 max_segs; /* number of ipath_segs in all the arrays */ |
| 84 | u32 mapsz; /* size of the map array */ |
| 85 | struct ipath_segarray *map[0]; /* the segments */ |
| 86 | }; |
| 87 | |
| 88 | /* |
| 89 | * These keep track of the copy progress within a memory region. |
| 90 | * Used by the verbs layer. |
| 91 | */ |
| 92 | struct ipath_sge { |
| 93 | struct ipath_mregion *mr; |
| 94 | void *vaddr; /* current pointer into the segment */ |
| 95 | u32 sge_length; /* length of the SGE */ |
| 96 | u32 length; /* remaining length of the segment */ |
| 97 | u16 m; /* current index: mr->map[m] */ |
| 98 | u16 n; /* current index: mr->map[m]->segs[n] */ |
| 99 | }; |
| 100 | |
| 101 | struct ipath_sge_state { |
| 102 | struct ipath_sge *sg_list; /* next SGE to be used if any */ |
| 103 | struct ipath_sge sge; /* progress state for the current SGE */ |
| 104 | u8 num_sge; |
| 105 | }; |
| 106 | |
| 107 | int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *), |
| 108 | void (*l_remove)(void *), |
| 109 | int (*l_intr)(void *, u32), |
| 110 | int (*l_rcv)(void *, void *, |
| 111 | struct sk_buff *), |
| 112 | u16 rcv_opcode, |
| 113 | int (*l_rcv_lid)(void *, void *)); |
| 114 | int ipath_verbs_register(void *(*l_add)(int, struct ipath_devdata *), |
| 115 | void (*l_remove)(void *arg), |
| 116 | int (*l_piobufavail)(void *arg), |
| 117 | void (*l_rcv)(void *arg, void *rhdr, |
| 118 | void *data, u32 tlen), |
| 119 | void (*l_timer_cb)(void *arg)); |
| 120 | void ipath_layer_unregister(void); |
| 121 | void ipath_verbs_unregister(void); |
| 122 | int ipath_layer_open(struct ipath_devdata *, u32 * pktmax); |
| 123 | u16 ipath_layer_get_lid(struct ipath_devdata *dd); |
| 124 | int ipath_layer_get_mac(struct ipath_devdata *dd, u8 *); |
| 125 | u16 ipath_layer_get_bcast(struct ipath_devdata *dd); |
| 126 | u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd); |
| 127 | int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 state); |
| 128 | int ipath_layer_set_mtu(struct ipath_devdata *, u16); |
| 129 | int ipath_set_sps_lid(struct ipath_devdata *, u32, u8); |
| 130 | int ipath_layer_send_hdr(struct ipath_devdata *dd, |
| 131 | struct ether_header *hdr); |
| 132 | int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords, |
| 133 | u32 * hdr, u32 len, struct ipath_sge_state *ss); |
| 134 | int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd); |
| 135 | int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name, |
| 136 | size_t namelen); |
| 137 | int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords, |
| 138 | u64 *rwords, u64 *spkts, u64 *rpkts, |
| 139 | u64 *xmit_wait); |
| 140 | int ipath_layer_get_counters(struct ipath_devdata *dd, |
| 141 | struct ipath_layer_counters *cntrs); |
| 142 | int ipath_layer_want_buffer(struct ipath_devdata *dd); |
| 143 | int ipath_layer_set_guid(struct ipath_devdata *, __be64 guid); |
| 144 | __be64 ipath_layer_get_guid(struct ipath_devdata *); |
| 145 | u32 ipath_layer_get_nguid(struct ipath_devdata *); |
| 146 | int ipath_layer_query_device(struct ipath_devdata *, u32 * vendor, |
| 147 | u32 * boardrev, u32 * majrev, u32 * minrev); |
| 148 | u32 ipath_layer_get_flags(struct ipath_devdata *dd); |
| 149 | struct device *ipath_layer_get_device(struct ipath_devdata *dd); |
| 150 | u16 ipath_layer_get_deviceid(struct ipath_devdata *dd); |
| 151 | u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd); |
| 152 | u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd); |
| 153 | int ipath_layer_enable_timer(struct ipath_devdata *dd); |
| 154 | int ipath_layer_disable_timer(struct ipath_devdata *dd); |
| 155 | int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags); |
| 156 | unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd); |
| 157 | unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index); |
| 158 | int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 *pkeys); |
| 159 | int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 *pkeys); |
| 160 | int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd); |
| 161 | int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd, |
| 162 | int sleep); |
| 163 | int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd); |
| 164 | int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n); |
| 165 | int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd); |
| 166 | int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n); |
| 167 | u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd); |
| 168 | |
| 169 | /* ipath_ether interrupt values */ |
| 170 | #define IPATH_LAYER_INT_IF_UP 0x2 |
| 171 | #define IPATH_LAYER_INT_IF_DOWN 0x4 |
| 172 | #define IPATH_LAYER_INT_LID 0x8 |
| 173 | #define IPATH_LAYER_INT_SEND_CONTINUE 0x10 |
| 174 | #define IPATH_LAYER_INT_BCAST 0x40 |
| 175 | |
| 176 | /* _verbs_layer.l_flags */ |
| 177 | #define IPATH_VERBS_KERNEL_SMA 0x1 |
| 178 | |
| 179 | extern unsigned ipath_debug; /* debugging bit mask */ |
| 180 | |
| 181 | #endif /* _IPATH_LAYER_H */ |