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<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>LKML: Roland Dreier: [PATCH 09/13] [RFC] ipath IB driver headers</title><link href="/css/message.css" rel="stylesheet" type="text/css" /><link href="/css/wrap.css" rel="alternate stylesheet" type="text/css" title="wrap" /><link href="/css/nowrap.css" rel="stylesheet" type="text/css" title="nowrap" /><link href="/favicon.ico" rel="shortcut icon" /><script src="/js/simple-calendar.js" type="text/javascript"></script><script src="/js/styleswitcher.js" type="text/javascript"></script><link rel="alternate" type="application/rss+xml" title="lkml.org : last 100 messages" href="/rss.php" /><link rel="alternate" type="application/rss+xml" title="lkml.org : last messages by Roland Dreier" href="/groupie.php?aid=3215" /><script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(["setDoNotTrack", true]); _paq.push(["disableCookies"]); _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function() { var u="//m.lkml.org/"; _paq.push(['setTrackerUrl', u+'matomo.php']); _paq.push(['setSiteId', '1']); var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0]; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s); })(); </script></head><body onload="es.jasper.simpleCalendar.init();" itemscope="itemscope" itemtype="http://schema.org/BlogPosting"><table border="0" cellpadding="0" cellspacing="0"><tr><td width="180" align="center"><a href="/"><img style="border:0;width:135px;height:32px" src="/images/toprowlk.gif" alt="lkml.org" /></a></td><td width="32">聽</td><td class="nb"><div><a class="nb" href="/lkml"> [lkml]</a> 聽 <a class="nb" href="/lkml/2005"> [2005]</a> 聽 <a class="nb" href="/lkml/2005/12"> [Dec]</a> 聽 <a class="nb" href="/lkml/2005/12/16"> [16]</a> 聽 <a class="nb" href="/lkml/last100"> [last100]</a> 聽 <a href="/rss.php"><img src="/images/rss-or.gif" border="0" alt="RSS Feed" /></a></div><div>Views: <a href="#" class="nowrap" onclick="setActiveStyleSheet('wrap');return false;">[wrap]</a><a href="#" class="wrap" onclick="setActiveStyleSheet('nowrap');return false;">[no wrap]</a> 聽 <a class="nb" href="/lkml/mheaders/2005/12/16/299" onclick="this.href='/lkml/headers'+'/2005/12/16/299';">[headers]</a>聽 <a href="/lkml/bounce/2005/12/16/299">[forward]</a>聽 </div></td><td width="32">聽</td></tr><tr><td valign="top"><div class="es-jasper-simpleCalendar" baseurl="/lkml/"></div><div class="threadlist">Messages in this thread</div><ul class="threadlist"><li class="root"><a href="/lkml/2005/12/16/290">First message in thread</a></li><li><a href="/lkml/2005/12/16/296">Roland Dreier</a><ul><li><a href="/lkml/2005/12/16/305">Roland Dreier</a><ul><li class="origin"><a href="/lkml/2005/12/16/295">Roland Dreier</a><ul><li><a href="/lkml/2005/12/16/295">Roland Dreier</a><ul><li><a href="/lkml/2005/12/16/302">Roland Dreier</a></li></ul></li><li><a href="/lkml/2005/12/18/89">"Paul E. McKenney"</a><ul><li><a href="/lkml/2005/12/18/92">Robert Walsh</a></li><li><a href="/lkml/2005/12/19/163">Ralph Campbell</a></li></ul></li></ul></li><li><a href="/lkml/2005/12/17/75">Andrew Morton</a><ul><li><a href="/lkml/2005/12/20/295">Robert Walsh</a></li></ul></li></ul></li></ul></li></ul><div class="threadlist">Patch in this message</div><ul class="threadlist"><li><a href="/lkml/diff/2005/12/16/299/1">Get diff 1</a></li></ul></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerl.gif" width="32" height="32" alt="/" /></td><td class="c" rowspan="2" valign="top" style="padding-top: 1em"><table><tr><td><table><tr><td class="lp">Subject</td><td class="rp" itemprop="name">[PATCH 09/13] [RFC] ipath IB driver headers</td></tr><tr><td class="lp">Date</td><td class="rp" itemprop="datePublished">Fri, 16 Dec 2005 15:48:55 -0800</td></tr><tr><td class="lp">From</td><td class="rp" itemprop="author">Roland Dreier <></td></tr></table></td><td></td></tr></table><pre itemprop="articleBody">Headers for ipath IB driver --- drivers/infiniband/hw/ipath/ipath_verbs.h | 527 +++++++++++++++++++++++++++++ drivers/infiniband/hw/ipath/verbs_debug.h | 104 ++++++ 2 files changed, 631 insertions(+), 0 deletions(-) create mode 100644 drivers/infiniband/hw/ipath/ipath_verbs.h create mode 100644 drivers/infiniband/hw/ipath/verbs_debug.h 8b106f1a0a6cb02f702c4ef957acad1bf8225c7d diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h new file mode 100644 index 0000000..4a4c65a --- /dev/null +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -0,0 +1,527 @@ +/* + * Copyright (c) 2005. 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. + * + * Patent licenses, if any, provided herein do not apply to + * combinations of this program with other software, or any other + * product whatsoever. + * + * $Id: ipath_verbs.h 4504 2005-12-16 06:15:47Z rjwalsh $ + */ + +#ifndef IPATH_VERBS_H +#define IPATH_VERBS_H + +#include <linux/types.h> +#include <linux/spinlock.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <rdma/ib_pack.h> + +#include "ipath_kernel.h" +#include "verbs_debug.h" + +#define CTL_IPATH_VERBS 0x70736e68 /* "spin" as a hex value, top level */ +#define CTL_IPATH_VERBS_FAULT 1 +#define CTL_IPATH_VERBS_DEBUG 2 + +/* + * Increment this value if any changes that break userspace ABI + * compatibility are made. + */ +#define IPATH_UVERBS_ABI_VERSION 1 + +/* + * Define an ib_cq_notify value that is not valid so we know when CQ + * notifications are armed. + */ +#define IB_CQ_NONE (IB_CQ_NEXT_COMP + 1) + +enum { + IB_RNR_NAK = 0x20, + + IB_NAK_PSN_ERROR = 0x60, + IB_NAK_INVALID_REQUEST = 0x61, + IB_NAK_REMOTE_ACCESS_ERROR = 0x62, + IB_NAK_REMOTE_OPERATIONAL_ERROR = 0x63, + IB_NAK_INVALID_RD_REQUEST = 0x64 +}; + +/* IB Performance Manager status values */ +enum { + IB_PMA_SAMPLE_STATUS_DONE = 0x00, + IB_PMA_SAMPLE_STATUS_STARTED = 0x01, + IB_PMA_SAMPLE_STATUS_RUNNING = 0x02 +}; + +/* Mandatory IB performance counter select values. */ +#define IB_PMA_PORT_XMIT_DATA __constant_htons(0x0001) +#define IB_PMA_PORT_RCV_DATA __constant_htons(0x0002) +#define IB_PMA_PORT_XMIT_PKTS __constant_htons(0x0003) +#define IB_PMA_PORT_RCV_PKTS __constant_htons(0x0004) +#define IB_PMA_PORT_XMIT_WAIT __constant_htons(0x0005) + +struct ib_reth { + u64 vaddr; + u32 rkey; + u32 length; +} __attribute__ ((packed)); + +struct ib_atomic_eth { + u64 vaddr; + u32 rkey; + u64 swap_data; + u64 compare_data; +} __attribute__ ((packed)); + +struct ipath_other_headers { + uint32_t bth[3]; + union { + struct { + uint32_t deth[2]; + uint32_t imm_data; + } ud; + struct { + struct ib_reth reth; + uint32_t imm_data; + } rc; + struct { + uint32_t aeth; + uint64_t atomic_ack_eth; + } at; + uint32_t imm_data; + uint32_t aeth; + struct ib_atomic_eth atomic_eth; + } u; +} __attribute__ ((packed)); + +/* + * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes long + * (72 w/ imm_data). + * Only the first 56 bytes of the IB header will be in the + * eager header buffer. The remaining 12 or 16 bytes are in the data buffer. + */ +struct ipath_ib_header { + uint16_t lrh[4]; + union { + struct { + struct ib_grh grh; + struct ipath_other_headers oth; + } l; + struct ipath_other_headers oth; + } u; +} __attribute__ ((packed)); + +/* + * There is one struct ipath_mcast for each multicast GID. + * All attached QPs are then stored as a list of + * struct ipath_mcast_qp. + */ +struct ipath_mcast_qp { + struct list_head list; + struct ipath_qp *qp; +}; + +struct ipath_mcast { + struct rb_node rb_node; + union ib_gid mgid; + struct list_head qp_list; + wait_queue_head_t wait; + atomic_t refcount; +}; + +/* Memory region */ +struct ipath_mr { + struct ib_mr ibmr; + struct ipath_mregion mr; /* must be last */ +}; + +/* Fast memory region */ +struct ipath_fmr { + struct ib_fmr ibfmr; + u8 page_size; + struct ipath_mregion mr; /* must be last */ +}; + +/* Protection domain */ +struct ipath_pd { + struct ib_pd ibpd; + int user; /* non-zero if created from user space */ +}; + +/* Address Handle */ +struct ipath_ah { + struct ib_ah ibah; + struct ib_ah_attr attr; +}; + +/* + * Quick description of our CQ/QP locking scheme: + * + * We have one global lock that protects dev->cq/qp_table. Each + * struct ipath_cq/qp also has its own lock. An individual qp lock + * may be taken inside of an individual cq lock. Both cqs attached to + * a qp may be locked, with the send cq locked first. No other + * nesting should be done. + * + * Each struct ipath_cq/qp also has an atomic_t ref count. The + * pointer from the cq/qp_table to the struct counts as one reference. + * This reference also is good for access through the consumer API, so + * modifying the CQ/QP etc doesn't need to take another reference. + * Access because of a completion being polled does need a reference. + * + * Finally, each struct ipath_cq/qp has a wait_queue_head_t for the + * destroy function to sleep on. + * + * This means that access from the consumer API requires nothing but + * taking the struct's lock. + * + * Access because of a completion event should go as follows: + * - lock cq/qp_table and look up struct + * - increment ref count in struct + * - drop cq/qp_table lock + * - lock struct, do your thing, and unlock struct + * - decrement ref count; if zero, wake up waiters + * + * To destroy a CQ/QP, we can do the following: + * - lock cq/qp_table, remove pointer, unlock cq/qp_table lock + * - decrement ref count + * - wait_event until ref count is zero + * + * It is the consumer's responsibilty to make sure that no QP + * operations (WQE posting or state modification) are pending when the + * QP is destroyed. Also, the consumer must make sure that calls to + * qp_modify are serialized. + * + * Possible optimizations (wait for profile data to see if/where we + * have locks bouncing between CPUs): + * - split cq/qp table lock into n separate (cache-aligned) locks, + * indexed (say) by the page in the table + */ + +struct ipath_cq { + struct ib_cq ibcq; + struct tasklet_struct comptask; + spinlock_t lock; + u8 notify; + u8 triggered; + u32 head; /* new records added to the head */ + u32 tail; /* poll_cq() reads from here. */ + struct ib_wc queue[1]; /* this is actually ibcq.cqe + 1 */ +}; + +/* + * Send work request queue entry. + * The size of the sg_list is determined when the QP is created and stored + * in qp->s_max_sge. + */ +struct ipath_swqe { + struct ib_send_wr wr; /* don't use wr.sg_list */ + u32 psn; /* first packet sequence number */ + u32 lpsn; /* last packet sequence number */ + u32 ssn; /* send sequence number */ + u32 length; /* total length of data in sg_list */ + struct ipath_sge sg_list[0]; +}; + +/* + * Receive work request queue entry. + * The size of the sg_list is determined when the QP is created and stored + * in qp->r_max_sge. + */ +struct ipath_rwqe { + u64 wr_id; + u32 length; /* total length of data in sg_list */ + u8 num_sge; + struct ipath_sge sg_list[0]; +}; + +struct ipath_rq { + spinlock_t lock; + u32 head; /* new work requests posted to the head */ + u32 tail; /* receives pull requests from here. */ + u32 size; /* size of RWQE array */ + u8 max_sge; + struct ipath_rwqe *wq; /* RWQE array */ +}; + +struct ipath_srq { + struct ib_srq ibsrq; + struct ipath_rq rq; + u32 limit; /* send signal when number of RWQEs < limit */ +}; + +/* + * Variables prefixed with s_ are for the requester (sender). + * Variables prefixed with r_ are for the responder (receiver). + * Variables prefixed with ack_ are for responder replies. + * + * Common variables are protected by both r_rq.lock and s_lock in that order + * which only happens in modify_qp() or changing the QP 'state'. + */ +struct ipath_qp { + struct ib_qp ibqp; + struct ipath_qp *next; /* link list for QPN hash table */ + struct list_head piowait; /* link for wait PIO buf */ + struct list_head timerwait; /* link for waiting for timeouts */ + struct ib_ah_attr remote_ah_attr; + struct ipath_ib_header s_hdr; /* next packet header to send */ + atomic_t refcount; + wait_queue_head_t wait; + struct tasklet_struct s_task; + struct ipath_sge_state *s_cur_sge; + struct ipath_sge_state s_sge; /* current send request data */ + struct ipath_sge_state s_rdma_sge; /* current RDMA read send data */ + struct ipath_sge_state r_sge; /* current receive data */ + spinlock_t s_lock; + int s_flags; + u32 s_hdrwords; /* size of s_hdr in 32 bit words */ + u32 s_cur_size; /* size of send packet in bytes */ + u32 s_len; /* total length of s_sge */ + u32 s_rdma_len; /* total length of s_rdma_sge */ + u32 s_next_psn; /* PSN for next request */ + u32 s_last_psn; /* last response PSN processed */ + u32 s_psn; /* current packet sequence number */ + u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */ + u32 s_ack_psn; /* PSN for next ACK or RDMA_READ */ + u64 s_ack_atomic; /* data for atomic ACK */ + u64 r_wr_id; /* ID for current receive WQE */ + u64 r_atomic_data; /* data for last atomic op */ + u32 r_atomic_psn; /* PSN of last atomic op */ + u32 r_len; /* total length of r_sge */ + u32 r_rcv_len; /* receive data len processed */ + u32 r_psn; /* expected rcv packet sequence number */ + u8 state; /* QP state */ + u8 s_state; /* opcode of last packet sent */ + u8 s_ack_state; /* opcode of packet to ACK */ + u8 s_nak_state; /* non-zero if NAK is pending */ + u8 r_state; /* opcode of last packet received */ + u8 r_reuse_sge; /* for UC receive errors */ + u8 r_sge_inx; /* current index into sg_list */ + u8 s_max_sge; /* size of s_wq->sg_list */ + u8 qp_access_flags; + u8 s_retry_cnt; /* number of times to retry */ + u8 s_rnr_retry_cnt; + u8 s_min_rnr_timer; + u8 s_retry; /* requester retry counter */ + u8 s_rnr_retry; /* requester RNR retry counter */ + u8 s_pkey_index; /* PKEY index to use */ + enum ib_mtu path_mtu; + atomic_t msn; /* message sequence number */ + u32 remote_qpn; + u32 qkey; /* QKEY for this QP (for UD or RD) */ + u32 s_size; /* send work queue size */ + u32 s_head; /* new entries added here */ + u32 s_tail; /* next entry to process */ + u32 s_cur; /* current work queue entry */ + u32 s_last; /* last un-ACK'ed entry */ + u32 s_ssn; /* SSN of tail entry */ + u32 s_lsn; /* limit sequence number (credit) */ + struct ipath_swqe *s_wq; /* send work queue */ + struct ipath_rq r_rq; /* receive work queue */ +}; + +/* + * Bit definitions for s_flags. + */ +#define IPATH_S_BUSY 0 +#define IPATH_S_SIGNAL_REQ_WR 1 + +/* + * Since struct ipath_swqe is not a fixed size, we can't simply index into + * struct ipath_qp.s_wq. This function does the array index computation. + */ +static inline struct ipath_swqe *get_swqe_ptr(struct ipath_qp *qp, unsigned n) +{ + return (struct ipath_swqe *)((char *) qp->s_wq + + (sizeof(struct ipath_swqe) + + qp->s_max_sge * sizeof(struct ipath_sge)) * n); +} + +/* + * Since struct ipath_rwqe is not a fixed size, we can't simply index into + * struct ipath_rq.wq. This function does the array index computation. + */ +static inline struct ipath_rwqe *get_rwqe_ptr(struct ipath_rq *rq, unsigned n) +{ + return (struct ipath_rwqe *)((char *) rq->wq + + (sizeof(struct ipath_rwqe) + + rq->max_sge * sizeof(struct ipath_sge)) * n); +} + +#define QPN_MAX (1 << 24) +#define QPNMAP_ENTRIES (QPN_MAX / PAGE_SIZE / 8) +#define BITS_PER_PAGE (PAGE_SIZE*8) +#define BITS_PER_PAGE_MASK (BITS_PER_PAGE-1) +#define mk_qpn(qpt, map, off) (((map) - (qpt)->map)*BITS_PER_PAGE + (off)) +#define find_next_offset(map, off) \ + find_next_zero_bit((map)->page, BITS_PER_PAGE, off) + +/* + * QPN-map pages start out as NULL, they get allocated upon + * first use and are never deallocated. This way, + * large bitmaps are not allocated unless large numbers of QPs are used. + */ +struct qpn_map { + atomic_t n_free; + void *page; +}; + +struct ipath_qp_table { + spinlock_t lock; + u32 last; /* last QP number allocated */ + u32 max; /* size of the hash table */ + u32 nmaps; /* size of the map table */ + struct ipath_qp **table; + struct qpn_map map[QPNMAP_ENTRIES]; /* bit map of free numbers */ +}; + +struct ipath_lkey_table { + spinlock_t lock; + u32 next; /* next unused index (speeds search) */ + u32 gen; /* generation count */ + u32 max; /* size of the table */ + struct ipath_mregion **table; +}; + +struct ipath_opcode_stats { + u64 n_packets; /* number of packets */ + u64 n_bytes; /* total number of bytes */ +}; + +struct ipath_ibdev { + struct ib_device ibdev; + ipath_type ib_unit; /* This is the device number */ + u16 sm_lid; /* in host order */ + u8 sm_sl; + u8 mkeyprot_resv_lmc; + unsigned long mkey_lease_timeout; /* non-zero when timer is set */ + + /* The following fields are really per port. */ + struct ipath_qp_table qp_table; + struct ipath_lkey_table lk_table; + struct list_head pending[3]; /* FIFO of QPs waiting for ACKs */ + struct list_head piowait; /* list for wait PIO buf */ + struct list_head rnrwait; /* list of QPs waiting for RNR timer */ + spinlock_t pending_lock; + __be64 sys_image_guid; /* in network order */ + __be64 gid_prefix; /* in network order */ + __be64 mkey; + u64 ipath_sword; /* total dwords sent (sample result) */ + u64 ipath_rword; /* total dwords received (sample result) */ + u64 ipath_spkts; /* total packets sent (sample result) */ + u64 ipath_rpkts; /* total packets received (sample result) */ + u64 n_multicast_xmit; /* total multicast packets sent */ + u64 n_multicast_rcv; /* total multicast packets received */ + u32 n_rc_resends; + u32 n_rc_acks; + u32 n_rc_qacks; + u32 n_seq_naks; + u32 n_rdma_seq; + u32 n_rnr_naks; + u32 n_other_naks; + u32 n_timeouts; + u32 n_pkt_drops; + u32 n_wqe_errs; + u32 n_rdma_dup_busy; + u32 n_piowait; + u32 n_no_piobuf; + u32 port_cap_flags; + u32 pma_sample_start; + u32 pma_sample_interval; + __be16 pma_counter_select[5]; + u16 pma_tag; + u16 qkey_violations; + u16 mkey_violations; + u16 mkey_lease_period; + u16 pending_index; /* which pending queue is active */ + u8 pma_sample_status; + u8 subnet_timeout; + struct ipath_opcode_stats opstats[128]; +}; + +struct ipath_ucontext { + struct ib_ucontext ibucontext; +}; + +static inline struct ipath_mr *to_imr(struct ib_mr *ibmr) +{ + return container_of(ibmr, struct ipath_mr, ibmr); +} + +static inline struct ipath_fmr *to_ifmr(struct ib_fmr *ibfmr) +{ + return container_of(ibfmr, struct ipath_fmr, ibfmr); +} + +static inline struct ipath_pd *to_ipd(struct ib_pd *ibpd) +{ + return container_of(ibpd, struct ipath_pd, ibpd); +} + +static inline struct ipath_ah *to_iah(struct ib_ah *ibah) +{ + return container_of(ibah, struct ipath_ah, ibah); +} + +static inline struct ipath_cq *to_icq(struct ib_cq *ibcq) +{ + return container_of(ibcq, struct ipath_cq, ibcq); +} + +static inline struct ipath_srq *to_isrq(struct ib_srq *ibsrq) +{ + return container_of(ibsrq, struct ipath_srq, ibsrq); +} + +static inline struct ipath_qp *to_iqp(struct ib_qp *ibqp) +{ + return container_of(ibqp, struct ipath_qp, ibqp); +} + +static inline struct ipath_ibdev *to_idev(struct ib_device *ibdev) +{ + return container_of(ibdev, struct ipath_ibdev, ibdev); +} + +int ipath_process_mad(struct ib_device *ibdev, + int mad_flags, + u8 port_num, + struct ib_wc *in_wc, + struct ib_grh *in_grh, + struct ib_mad *in_mad, struct ib_mad *out_mad); + +static inline struct ipath_ucontext *to_iucontext(struct ib_ucontext + *ibucontext) +{ + return container_of(ibucontext, struct ipath_ucontext, ibucontext); +} + +#endif /* IPATH_VERBS_H */ diff --git a/drivers/infiniband/hw/ipath/verbs_debug.h b/drivers/infiniband/hw/ipath/verbs_debug.h new file mode 100644 index 0000000..21e0f8c --- /dev/null +++ b/drivers/infiniband/hw/ipath/verbs_debug.h @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2003, 2004, 2005. 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. + * + * Patent licenses, if any, provided herein do not apply to + * combinations of this program with other software, or any other + * product whatsoever. + * + * $Id: verbs_debug.h 4365 2005-12-10 00:04:16Z rjwalsh $ + */ + +#ifndef _VERBS_DEBUG_H +#define _VERBS_DEBUG_H + +/* + * This file contains tracing code for the ib_ipath kernel module. + */ +#ifndef _VERBS_DEBUGGING /* tracing enabled or not */ +#define _VERBS_DEBUGGING 1 +#endif + +extern unsigned ib_ipath_debug; + +#define __VERBS_ERRID "ib_ipath" +#define __VERBS_UNIT_ERRID(unit) ipath_get_unit_name(unit) + +#define _VERBS_ERROR(fmt,...) do { \ + printk (KERN_ERR "%s: " fmt, __VERBS_ERRID,##__VA_ARGS__); \ + } while(0) + +#define _VERBS_UNIT_ERROR(unit,fmt,...) do { \ + printk (KERN_ERR "%s: " fmt, __VERBS_ERRID(unit),##__VA_ARGS__); \ + } while(0) + +#if _VERBS_DEBUGGING + +/* + * Mask values for debugging. The scheme allows us to compile out any of + * the debug tracing stuff, and if compiled in, to enable or disable dynamically + * This can be set at modprobe time also: + * modprobe ib_path ib_ipath_debug=3 + */ +#define __VERBS_INFO 0x1 /* generic low verbosity stuff */ +#define __VERBS_DBG 0x2 /* generic debug */ +#define __VERBS_VDBG 0x4 /* verbose debug */ +#define __VERBS_SMADBG 0x8000 /* sma packet debug */ + +#define _VERBS_INFO(fmt,...) do { \ + if(unlikely(ib_ipath_debug&__VERBS_INFO)) \ + printk (KERN_INFO "%s: " fmt,__VERBS_ERRID,##__VA_ARGS__); \ + } while(0) + +#define _VERBS_DBG(fmt,...) do { \ + if(unlikely(ib_ipath_debug&__VERBS_DBG)) \ + printk (KERN_DEBUG "%s: " fmt, __func__,##__VA_ARGS__); \ + } while(0) + +#define _VERBS_VDBG(fmt,...) do { \ + if(unlikely(ib_ipath_debug&__VERBS_VDBG)) \ + printk (KERN_DEBUG "%s: " fmt, __func__,##__VA_ARGS__); \ + } while(0) + +#define _VERBS_SMADBG(fmt,...) do { \ + if(unlikely(ib_ipath_debug&__VERBS_SMADBG)) \ + printk (KERN_DEBUG "%s: " fmt, __func__,##__VA_ARGS__); \ + } while(0) + +#else /* ! _VERBS_DEBUGGING */ + +#define _VERBS_INFO(fmt,...) +#define _VERBS_DBG(fmt,...) +#define _VERBS_VDBG(fmt,...) +#define _VERBS_SMADBG(fmt,...) + +#endif /* _VERBS_DEBUGGING */ + +#endif /* _VERBS_DEBUG_H */ -- 0.99.9n - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at <a href="http://vger.kernel.org/majordomo-info.html">http://vger.kernel.org/majordomo-info.html</a> Please read the FAQ at <a href="http://www.tux.org/lkml/">http://www.tux.org/lkml/</a> </pre></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerr.gif" width="32" height="32" alt="\" /></td></tr><tr><td align="right" valign="bottom"> 聽 </td></tr><tr><td align="right" valign="bottom">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerl.gif" width="32" height="32" alt="\" /></td><td class="c">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerr.gif" width="32" height="32" alt="/" /></td></tr><tr><td align="right" valign="top" colspan="2"> 聽 </td><td class="lm">Last update: 2005-12-17 00:58 聽聽 [from the cache] 漏2003-2020 <a href="http://blog.jasper.es/">Jasper Spaans</a>|hosted at <a href="https://www.digitalocean.com/?refcode=9a8e99d24cf9">Digital Ocean</a> and my Meterkast|<a href="http://blog.jasper.es/categories.html#lkml-ref">Read the blog</a></td><td>聽</td></tr></table><script language="javascript" src="/js/styleswitcher.js" type="text/javascript"></script></body></html>