/* * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef _IPATH_LAYER_H #define _IPATH_LAYER_H /* * This header file is for symbols shared between the infinipath driver * and drivers layered upon it (such as ipath). */ struct sk_buff; struct ipath_sge_state; struct ipath_devdata; struct ether_header; struct ipath_layer_counters { u64 symbol_error_counter; u64 link_error_recovery_counter; u64 link_downed_counter; u64 port_rcv_errors; u64 port_rcv_remphys_errors; u64 port_xmit_discards; u64 port_xmit_data; u64 port_rcv_data; u64 port_xmit_packets; u64 port_rcv_packets; }; /* * A segment is a linear region of low physical memory. * XXX Maybe we should use phys addr here and kmap()/kunmap(). * Used by the verbs layer. */ struct ipath_seg { void *vaddr; size_t length; }; /* The number of ipath_segs that fit in a page. */ #define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg)) struct ipath_segarray { struct ipath_seg segs[IPATH_SEGSZ]; }; struct ipath_mregion { u64 user_base; /* User's address for this region */ u64 iova; /* IB start address of this region */ size_t length; u32 lkey; u32 offset; /* offset (bytes) to start of region */ int access_flags; u32 max_segs; /* number of ipath_segs in all the arrays */ u32 mapsz; /* size of the map array */ struct ipath_segarray *map[0]; /* the segments */ }; /* * These keep track of the copy progress within a memory region. * Used by the verbs layer. */ struct ipath_sge { struct ipath_mregion *mr; void *vaddr; /* current pointer into the segment */ u32 sge_length; /* length of the SGE */ u32 length; /* remaining length of the segment */ u16 m; /* current index: mr->map[m] */ u16 n; /* current index: mr->map[m]->segs[n] */ }; struct ipath_sge_state { struct ipath_sge *sg_list; /* next SGE to be used if any */ struct ipath_sge sge; /* progress state for the current SGE */ u8 num_sge; }; int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *), void (*l_remove)(void *), int (*l_intr)(void *, u32), int (*l_rcv)(void *, void *, struct sk_buff *), u16 rcv_opcode, int (*l_rcv_lid)(void *, void *)); int ipath_verbs_register(void *(*l_add)(int, struct ipath_devdata *), void (*l_remove)(void *arg), int (*l_piobufavail)(void *arg), void (*l_rcv)(void *arg, void *rhdr, void *data, u32 tlen), void (*l_timer_cb)(void *arg)); void ipath_layer_unregister(void); void ipath_verbs_unregister(void); int ipath_layer_open(struct ipath_devdata *, u32 * pktmax); u16 ipath_layer_get_lid(struct ipath_devdata *dd); int ipath_layer_get_mac(struct ipath_devdata *dd, u8 *); u16 ipath_layer_get_bcast(struct ipath_devdata *dd); u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd); int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 state); int ipath_layer_set_mtu(struct ipath_devdata *, u16); int ipath_set_sps_lid(struct ipath_devdata *, u32, u8); int ipath_layer_send_hdr(struct ipath_devdata *dd, struct ether_header *hdr); int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords, u32 * hdr, u32 len, struct ipath_sge_state *ss); int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd); int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name, size_t namelen); int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords, u64 *rwords, u64 *spkts, u64 *rpkts, u64 *xmit_wait); int ipath_layer_get_counters(struct ipath_devdata *dd, struct ipath_layer_counters *cntrs); int ipath_layer_want_buffer(struct ipath_devdata *dd); int ipath_layer_set_guid(struct ipath_devdata *, __be64 guid); __be64 ipath_layer_get_guid(struct ipath_devdata *); u32 ipath_layer_get_nguid(struct ipath_devdata *); int ipath_layer_query_device(struct ipath_devdata *, u32 * vendor, u32 * boardrev, u32 * majrev, u32 * minrev); u32 ipath_layer_get_flags(struct ipath_devdata *dd); struct device *ipath_layer_get_device(struct ipath_devdata *dd); u16 ipath_layer_get_deviceid(struct ipath_devdata *dd); u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd); u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd); int ipath_layer_enable_timer(struct ipath_devdata *dd); int ipath_layer_disable_timer(struct ipath_devdata *dd); int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags); unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd); unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index); int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 *pkeys); int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 *pkeys); int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd); int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep); int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd); int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n); int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd); int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n); u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd); /* ipath_ether interrupt values */ #define IPATH_LAYER_INT_IF_UP 0x2 #define IPATH_LAYER_INT_IF_DOWN 0x4 #define IPATH_LAYER_INT_LID 0x8 #define IPATH_LAYER_INT_SEND_CONTINUE 0x10 #define IPATH_LAYER_INT_BCAST 0x40 /* _verbs_layer.l_flags */ #define IPATH_VERBS_KERNEL_SMA 0x1 extern unsigned ipath_debug; /* debugging bit mask */ #endif /* _IPATH_LAYER_H */