diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_layer.h')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_layer.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_layer.h b/drivers/infiniband/hw/ipath/ipath_layer.h new file mode 100644 index 00000000000..6fefd15bd2d --- /dev/null +++ b/drivers/infiniband/hw/ipath/ipath_layer.h @@ -0,0 +1,181 @@ +/* + * 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 */ |