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linux_dsm_epyc7002/drivers/infiniband/hw/hfi1/verbs.c
Michael J. Ruhl 06f2597f75 IB/{rdmavt, hfi1, qib}: Remove get_card_name() downcall 
rdmavt has a down call to client drivers to retrieve a crafted card
name.

This name should be the IB defined name.

Rather than craft the name each time it is needed, simply retrieve
the IB allocated name from the IB device.

Update the function name to reflect its application.

Clean up driver code to match this change.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-05 13:34:55 -05:00

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/*
* Copyright(c) 2015 - 2017 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* BSD LICENSE
*
* 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.
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <rdma/ib_mad.h>
#include <rdma/ib_user_verbs.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/utsname.h>
#include <linux/rculist.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <rdma/opa_addr.h>
#include "hfi.h"
#include "common.h"
#include "device.h"
#include "trace.h"
#include "qp.h"
#include "verbs_txreq.h"
#include "debugfs.h"
#include "vnic.h"
static unsigned int hfi1_lkey_table_size = 16;
module_param_named(lkey_table_size, hfi1_lkey_table_size, uint,
S_IRUGO);
MODULE_PARM_DESC(lkey_table_size,
"LKEY table size in bits (2^n, 1 <= n <= 23)");
static unsigned int hfi1_max_pds = 0xFFFF;
module_param_named(max_pds, hfi1_max_pds, uint, S_IRUGO);
MODULE_PARM_DESC(max_pds,
"Maximum number of protection domains to support");
static unsigned int hfi1_max_ahs = 0xFFFF;
module_param_named(max_ahs, hfi1_max_ahs, uint, S_IRUGO);
MODULE_PARM_DESC(max_ahs, "Maximum number of address handles to support");
unsigned int hfi1_max_cqes = 0x2FFFFF;
module_param_named(max_cqes, hfi1_max_cqes, uint, S_IRUGO);
MODULE_PARM_DESC(max_cqes,
"Maximum number of completion queue entries to support");
unsigned int hfi1_max_cqs = 0x1FFFF;
module_param_named(max_cqs, hfi1_max_cqs, uint, S_IRUGO);
MODULE_PARM_DESC(max_cqs, "Maximum number of completion queues to support");
unsigned int hfi1_max_qp_wrs = 0x3FFF;
module_param_named(max_qp_wrs, hfi1_max_qp_wrs, uint, S_IRUGO);
MODULE_PARM_DESC(max_qp_wrs, "Maximum number of QP WRs to support");
unsigned int hfi1_max_qps = 32768;
module_param_named(max_qps, hfi1_max_qps, uint, S_IRUGO);
MODULE_PARM_DESC(max_qps, "Maximum number of QPs to support");
unsigned int hfi1_max_sges = 0x60;
module_param_named(max_sges, hfi1_max_sges, uint, S_IRUGO);
MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support");
unsigned int hfi1_max_mcast_grps = 16384;
module_param_named(max_mcast_grps, hfi1_max_mcast_grps, uint, S_IRUGO);
MODULE_PARM_DESC(max_mcast_grps,
"Maximum number of multicast groups to support");
unsigned int hfi1_max_mcast_qp_attached = 16;
module_param_named(max_mcast_qp_attached, hfi1_max_mcast_qp_attached,
uint, S_IRUGO);
MODULE_PARM_DESC(max_mcast_qp_attached,
"Maximum number of attached QPs to support");
unsigned int hfi1_max_srqs = 1024;
module_param_named(max_srqs, hfi1_max_srqs, uint, S_IRUGO);
MODULE_PARM_DESC(max_srqs, "Maximum number of SRQs to support");
unsigned int hfi1_max_srq_sges = 128;
module_param_named(max_srq_sges, hfi1_max_srq_sges, uint, S_IRUGO);
MODULE_PARM_DESC(max_srq_sges, "Maximum number of SRQ SGEs to support");
unsigned int hfi1_max_srq_wrs = 0x1FFFF;
module_param_named(max_srq_wrs, hfi1_max_srq_wrs, uint, S_IRUGO);
MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support");
unsigned short piothreshold = 256;
module_param(piothreshold, ushort, S_IRUGO);
MODULE_PARM_DESC(piothreshold, "size used to determine sdma vs. pio");
#define COPY_CACHELESS 1
#define COPY_ADAPTIVE 2
static unsigned int sge_copy_mode;
module_param(sge_copy_mode, uint, S_IRUGO);
MODULE_PARM_DESC(sge_copy_mode,
"Verbs copy mode: 0 use memcpy, 1 use cacheless copy, 2 adapt based on WSS");
static void verbs_sdma_complete(
struct sdma_txreq *cookie,
int status);
static int pio_wait(struct rvt_qp *qp,
struct send_context *sc,
struct hfi1_pkt_state *ps,
u32 flag);
/* Length of buffer to create verbs txreq cache name */
#define TXREQ_NAME_LEN 24
/* 16B trailing buffer */
static const u8 trail_buf[MAX_16B_PADDING];
static uint wss_threshold;
module_param(wss_threshold, uint, S_IRUGO);
MODULE_PARM_DESC(wss_threshold, "Percentage (1-100) of LLC to use as a threshold for a cacheless copy");
static uint wss_clean_period = 256;
module_param(wss_clean_period, uint, S_IRUGO);
MODULE_PARM_DESC(wss_clean_period, "Count of verbs copies before an entry in the page copy table is cleaned");
/* memory working set size */
struct hfi1_wss {
unsigned long *entries;
atomic_t total_count;
atomic_t clean_counter;
atomic_t clean_entry;
int threshold;
int num_entries;
long pages_mask;
};
static struct hfi1_wss wss;
int hfi1_wss_init(void)
{
long llc_size;
long llc_bits;
long table_size;
long table_bits;
/* check for a valid percent range - default to 80 if none or invalid */
if (wss_threshold < 1 || wss_threshold > 100)
wss_threshold = 80;
/* reject a wildly large period */
if (wss_clean_period > 1000000)
wss_clean_period = 256;
/* reject a zero period */
if (wss_clean_period == 0)
wss_clean_period = 1;
/*
* Calculate the table size - the next power of 2 larger than the
* LLC size. LLC size is in KiB.
*/
llc_size = wss_llc_size() * 1024;
table_size = roundup_pow_of_two(llc_size);
/* one bit per page in rounded up table */
llc_bits = llc_size / PAGE_SIZE;
table_bits = table_size / PAGE_SIZE;
wss.pages_mask = table_bits - 1;
wss.num_entries = table_bits / BITS_PER_LONG;
wss.threshold = (llc_bits * wss_threshold) / 100;
if (wss.threshold == 0)
wss.threshold = 1;
atomic_set(&wss.clean_counter, wss_clean_period);
wss.entries = kcalloc(wss.num_entries, sizeof(*wss.entries),
GFP_KERNEL);
if (!wss.entries) {
hfi1_wss_exit();
return -ENOMEM;
}
return 0;
}
void hfi1_wss_exit(void)
{
/* coded to handle partially initialized and repeat callers */
kfree(wss.entries);
wss.entries = NULL;
}
/*
* Advance the clean counter. When the clean period has expired,
* clean an entry.
*
* This is implemented in atomics to avoid locking. Because multiple
* variables are involved, it can be racy which can lead to slightly
* inaccurate information. Since this is only a heuristic, this is
* OK. Any innaccuracies will clean themselves out as the counter
* advances. That said, it is unlikely the entry clean operation will
* race - the next possible racer will not start until the next clean
* period.
*
* The clean counter is implemented as a decrement to zero. When zero
* is reached an entry is cleaned.
*/
static void wss_advance_clean_counter(void)
{
int entry;
int weight;
unsigned long bits;
/* become the cleaner if we decrement the counter to zero */
if (atomic_dec_and_test(&wss.clean_counter)) {
/*
* Set, not add, the clean period. This avoids an issue
* where the counter could decrement below the clean period.
* Doing a set can result in lost decrements, slowing the
* clean advance. Since this a heuristic, this possible
* slowdown is OK.
*
* An alternative is to loop, advancing the counter by a
* clean period until the result is > 0. However, this could
* lead to several threads keeping another in the clean loop.
* This could be mitigated by limiting the number of times
* we stay in the loop.
*/
atomic_set(&wss.clean_counter, wss_clean_period);
/*
* Uniquely grab the entry to clean and move to next.
* The current entry is always the lower bits of
* wss.clean_entry. The table size, wss.num_entries,
* is always a power-of-2.
*/
entry = (atomic_inc_return(&wss.clean_entry) - 1)
& (wss.num_entries - 1);
/* clear the entry and count the bits */
bits = xchg(&wss.entries[entry], 0);
weight = hweight64((u64)bits);
/* only adjust the contended total count if needed */
if (weight)
atomic_sub(weight, &wss.total_count);
}
}
/*
* Insert the given address into the working set array.
*/
static void wss_insert(void *address)
{
u32 page = ((unsigned long)address >> PAGE_SHIFT) & wss.pages_mask;
u32 entry = page / BITS_PER_LONG; /* assumes this ends up a shift */
u32 nr = page & (BITS_PER_LONG - 1);
if (!test_and_set_bit(nr, &wss.entries[entry]))
atomic_inc(&wss.total_count);
wss_advance_clean_counter();
}
/*
* Is the working set larger than the threshold?
*/
static inline bool wss_exceeds_threshold(void)
{
return atomic_read(&wss.total_count) >= wss.threshold;
}
/*
* Translate ib_wr_opcode into ib_wc_opcode.
*/
const enum ib_wc_opcode ib_hfi1_wc_opcode[] = {
[IB_WR_RDMA_WRITE] = IB_WC_RDMA_WRITE,
[IB_WR_RDMA_WRITE_WITH_IMM] = IB_WC_RDMA_WRITE,
[IB_WR_SEND] = IB_WC_SEND,
[IB_WR_SEND_WITH_IMM] = IB_WC_SEND,
[IB_WR_RDMA_READ] = IB_WC_RDMA_READ,
[IB_WR_ATOMIC_CMP_AND_SWP] = IB_WC_COMP_SWAP,
[IB_WR_ATOMIC_FETCH_AND_ADD] = IB_WC_FETCH_ADD,
[IB_WR_SEND_WITH_INV] = IB_WC_SEND,
[IB_WR_LOCAL_INV] = IB_WC_LOCAL_INV,
[IB_WR_REG_MR] = IB_WC_REG_MR
};
/*
* Length of header by opcode, 0 --> not supported
*/
const u8 hdr_len_by_opcode[256] = {
/* RC */
[IB_OPCODE_RC_SEND_FIRST] = 12 + 8,
[IB_OPCODE_RC_SEND_MIDDLE] = 12 + 8,
[IB_OPCODE_RC_SEND_LAST] = 12 + 8,
[IB_OPCODE_RC_SEND_LAST_WITH_IMMEDIATE] = 12 + 8 + 4,
[IB_OPCODE_RC_SEND_ONLY] = 12 + 8,
[IB_OPCODE_RC_SEND_ONLY_WITH_IMMEDIATE] = 12 + 8 + 4,
[IB_OPCODE_RC_RDMA_WRITE_FIRST] = 12 + 8 + 16,
[IB_OPCODE_RC_RDMA_WRITE_MIDDLE] = 12 + 8,
[IB_OPCODE_RC_RDMA_WRITE_LAST] = 12 + 8,
[IB_OPCODE_RC_RDMA_WRITE_LAST_WITH_IMMEDIATE] = 12 + 8 + 4,
[IB_OPCODE_RC_RDMA_WRITE_ONLY] = 12 + 8 + 16,
[IB_OPCODE_RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE] = 12 + 8 + 20,
[IB_OPCODE_RC_RDMA_READ_REQUEST] = 12 + 8 + 16,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST] = 12 + 8 + 4,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE] = 12 + 8,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST] = 12 + 8 + 4,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_ONLY] = 12 + 8 + 4,
[IB_OPCODE_RC_ACKNOWLEDGE] = 12 + 8 + 4,
[IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE] = 12 + 8 + 4 + 8,
[IB_OPCODE_RC_COMPARE_SWAP] = 12 + 8 + 28,
[IB_OPCODE_RC_FETCH_ADD] = 12 + 8 + 28,
[IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE] = 12 + 8 + 4,
[IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE] = 12 + 8 + 4,
/* UC */
[IB_OPCODE_UC_SEND_FIRST] = 12 + 8,
[IB_OPCODE_UC_SEND_MIDDLE] = 12 + 8,
[IB_OPCODE_UC_SEND_LAST] = 12 + 8,
[IB_OPCODE_UC_SEND_LAST_WITH_IMMEDIATE] = 12 + 8 + 4,
[IB_OPCODE_UC_SEND_ONLY] = 12 + 8,
[IB_OPCODE_UC_SEND_ONLY_WITH_IMMEDIATE] = 12 + 8 + 4,
[IB_OPCODE_UC_RDMA_WRITE_FIRST] = 12 + 8 + 16,
[IB_OPCODE_UC_RDMA_WRITE_MIDDLE] = 12 + 8,
[IB_OPCODE_UC_RDMA_WRITE_LAST] = 12 + 8,
[IB_OPCODE_UC_RDMA_WRITE_LAST_WITH_IMMEDIATE] = 12 + 8 + 4,
[IB_OPCODE_UC_RDMA_WRITE_ONLY] = 12 + 8 + 16,
[IB_OPCODE_UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE] = 12 + 8 + 20,
/* UD */
[IB_OPCODE_UD_SEND_ONLY] = 12 + 8 + 8,
[IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE] = 12 + 8 + 12
};
static const opcode_handler opcode_handler_tbl[256] = {
/* RC */
[IB_OPCODE_RC_SEND_FIRST] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_MIDDLE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_LAST] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_LAST_WITH_IMMEDIATE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_ONLY] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_ONLY_WITH_IMMEDIATE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_WRITE_FIRST] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_WRITE_MIDDLE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_WRITE_LAST] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_WRITE_LAST_WITH_IMMEDIATE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_WRITE_ONLY] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_WRITE_ONLY_WITH_IMMEDIATE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_READ_REQUEST] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST] = &hfi1_rc_rcv,
[IB_OPCODE_RC_RDMA_READ_RESPONSE_ONLY] = &hfi1_rc_rcv,
[IB_OPCODE_RC_ACKNOWLEDGE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_COMPARE_SWAP] = &hfi1_rc_rcv,
[IB_OPCODE_RC_FETCH_ADD] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE] = &hfi1_rc_rcv,
/* UC */
[IB_OPCODE_UC_SEND_FIRST] = &hfi1_uc_rcv,
[IB_OPCODE_UC_SEND_MIDDLE] = &hfi1_uc_rcv,
[IB_OPCODE_UC_SEND_LAST] = &hfi1_uc_rcv,
[IB_OPCODE_UC_SEND_LAST_WITH_IMMEDIATE] = &hfi1_uc_rcv,
[IB_OPCODE_UC_SEND_ONLY] = &hfi1_uc_rcv,
[IB_OPCODE_UC_SEND_ONLY_WITH_IMMEDIATE] = &hfi1_uc_rcv,
[IB_OPCODE_UC_RDMA_WRITE_FIRST] = &hfi1_uc_rcv,
[IB_OPCODE_UC_RDMA_WRITE_MIDDLE] = &hfi1_uc_rcv,
[IB_OPCODE_UC_RDMA_WRITE_LAST] = &hfi1_uc_rcv,
[IB_OPCODE_UC_RDMA_WRITE_LAST_WITH_IMMEDIATE] = &hfi1_uc_rcv,
[IB_OPCODE_UC_RDMA_WRITE_ONLY] = &hfi1_uc_rcv,
[IB_OPCODE_UC_RDMA_WRITE_ONLY_WITH_IMMEDIATE] = &hfi1_uc_rcv,
/* UD */
[IB_OPCODE_UD_SEND_ONLY] = &hfi1_ud_rcv,
[IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE] = &hfi1_ud_rcv,
/* CNP */
[IB_OPCODE_CNP] = &hfi1_cnp_rcv
};
#define OPMASK 0x1f
static const u32 pio_opmask[BIT(3)] = {
/* RC */
[IB_OPCODE_RC >> 5] =
BIT(RC_OP(SEND_ONLY) & OPMASK) |
BIT(RC_OP(SEND_ONLY_WITH_IMMEDIATE) & OPMASK) |
BIT(RC_OP(RDMA_WRITE_ONLY) & OPMASK) |
BIT(RC_OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE) & OPMASK) |
BIT(RC_OP(RDMA_READ_REQUEST) & OPMASK) |
BIT(RC_OP(ACKNOWLEDGE) & OPMASK) |
BIT(RC_OP(ATOMIC_ACKNOWLEDGE) & OPMASK) |
BIT(RC_OP(COMPARE_SWAP) & OPMASK) |
BIT(RC_OP(FETCH_ADD) & OPMASK),
/* UC */
[IB_OPCODE_UC >> 5] =
BIT(UC_OP(SEND_ONLY) & OPMASK) |
BIT(UC_OP(SEND_ONLY_WITH_IMMEDIATE) & OPMASK) |
BIT(UC_OP(RDMA_WRITE_ONLY) & OPMASK) |
BIT(UC_OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE) & OPMASK),
};
/*
* System image GUID.
*/
__be64 ib_hfi1_sys_image_guid;
/**
* hfi1_copy_sge - copy data to SGE memory
* @ss: the SGE state
* @data: the data to copy
* @length: the length of the data
* @release: boolean to release MR
* @copy_last: do a separate copy of the last 8 bytes
*/
void hfi1_copy_sge(
struct rvt_sge_state *ss,
void *data, u32 length,
bool release,
bool copy_last)
{
struct rvt_sge *sge = &ss->sge;
int i;
bool in_last = false;
bool cacheless_copy = false;
if (sge_copy_mode == COPY_CACHELESS) {
cacheless_copy = length >= PAGE_SIZE;
} else if (sge_copy_mode == COPY_ADAPTIVE) {
if (length >= PAGE_SIZE) {
/*
* NOTE: this *assumes*:
* o The first vaddr is the dest.
* o If multiple pages, then vaddr is sequential.
*/
wss_insert(sge->vaddr);
if (length >= (2 * PAGE_SIZE))
wss_insert(sge->vaddr + PAGE_SIZE);
cacheless_copy = wss_exceeds_threshold();
} else {
wss_advance_clean_counter();
}
}
if (copy_last) {
if (length > 8) {
length -= 8;
} else {
copy_last = false;
in_last = true;
}
}
again:
while (length) {
u32 len = rvt_get_sge_length(sge, length);
WARN_ON_ONCE(len == 0);
if (unlikely(in_last)) {
/* enforce byte transfer ordering */
for (i = 0; i < len; i++)
((u8 *)sge->vaddr)[i] = ((u8 *)data)[i];
} else if (cacheless_copy) {
cacheless_memcpy(sge->vaddr, data, len);
} else {
memcpy(sge->vaddr, data, len);
}
rvt_update_sge(ss, len, release);
data += len;
length -= len;
}
if (copy_last) {
copy_last = false;
in_last = true;
length = 8;
goto again;
}
}
/*
* Make sure the QP is ready and able to accept the given opcode.
*/
static inline opcode_handler qp_ok(struct hfi1_packet *packet)
{
if (!(ib_rvt_state_ops[packet->qp->state] & RVT_PROCESS_RECV_OK))
return NULL;
if (((packet->opcode & RVT_OPCODE_QP_MASK) ==
packet->qp->allowed_ops) ||
(packet->opcode == IB_OPCODE_CNP))
return opcode_handler_tbl[packet->opcode];
return NULL;
}
static u64 hfi1_fault_tx(struct rvt_qp *qp, u8 opcode, u64 pbc)
{
#ifdef CONFIG_FAULT_INJECTION
if ((opcode & IB_OPCODE_MSP) == IB_OPCODE_MSP)
/*
* In order to drop non-IB traffic we
* set PbcInsertHrc to NONE (0x2).
* The packet will still be delivered
* to the receiving node but a
* KHdrHCRCErr (KDETH packet with a bad
* HCRC) will be triggered and the
* packet will not be delivered to the
* correct context.
*/
pbc |= (u64)PBC_IHCRC_NONE << PBC_INSERT_HCRC_SHIFT;
else
/*
* In order to drop regular verbs
* traffic we set the PbcTestEbp
* flag. The packet will still be
* delivered to the receiving node but
* a 'late ebp error' will be
* triggered and will be dropped.
*/
pbc |= PBC_TEST_EBP;
#endif
return pbc;
}
static int hfi1_do_pkey_check(struct hfi1_packet *packet)
{
struct hfi1_ctxtdata *rcd = packet->rcd;
struct hfi1_pportdata *ppd = rcd->ppd;
struct hfi1_16b_header *hdr = packet->hdr;
u16 pkey;
/* Pkey check needed only for bypass packets */
if (packet->etype != RHF_RCV_TYPE_BYPASS)
return 0;
/* Perform pkey check */
pkey = hfi1_16B_get_pkey(hdr);
return ingress_pkey_check(ppd, pkey, packet->sc,
packet->qp->s_pkey_index,
packet->slid, true);
}
static inline void hfi1_handle_packet(struct hfi1_packet *packet,
bool is_mcast)
{
u32 qp_num;
struct hfi1_ctxtdata *rcd = packet->rcd;
struct hfi1_pportdata *ppd = rcd->ppd;
struct hfi1_ibport *ibp = rcd_to_iport(rcd);
struct rvt_dev_info *rdi = &ppd->dd->verbs_dev.rdi;
opcode_handler packet_handler;
unsigned long flags;
inc_opstats(packet->tlen, &rcd->opstats->stats[packet->opcode]);
if (unlikely(is_mcast)) {
struct rvt_mcast *mcast;
struct rvt_mcast_qp *p;
if (!packet->grh)
goto drop;
mcast = rvt_mcast_find(&ibp->rvp,
&packet->grh->dgid,
opa_get_lid(packet->dlid, 9B));
if (!mcast)
goto drop;
list_for_each_entry_rcu(p, &mcast->qp_list, list) {
packet->qp = p->qp;
if (hfi1_do_pkey_check(packet))
goto drop;
spin_lock_irqsave(&packet->qp->r_lock, flags);
packet_handler = qp_ok(packet);
if (likely(packet_handler))
packet_handler(packet);
else
ibp->rvp.n_pkt_drops++;
spin_unlock_irqrestore(&packet->qp->r_lock, flags);
}
/*
* Notify rvt_multicast_detach() if it is waiting for us
* to finish.
*/
if (atomic_dec_return(&mcast->refcount) <= 1)
wake_up(&mcast->wait);
} else {
/* Get the destination QP number. */
qp_num = ib_bth_get_qpn(packet->ohdr);
rcu_read_lock();
packet->qp = rvt_lookup_qpn(rdi, &ibp->rvp, qp_num);
if (!packet->qp)
goto unlock_drop;
if (hfi1_do_pkey_check(packet))
goto unlock_drop;
if (unlikely(hfi1_dbg_fault_opcode(packet->qp, packet->opcode,
true)))
goto unlock_drop;
spin_lock_irqsave(&packet->qp->r_lock, flags);
packet_handler = qp_ok(packet);
if (likely(packet_handler))
packet_handler(packet);
else
ibp->rvp.n_pkt_drops++;
spin_unlock_irqrestore(&packet->qp->r_lock, flags);
rcu_read_unlock();
}
return;
unlock_drop:
rcu_read_unlock();
drop:
ibp->rvp.n_pkt_drops++;
}
/**
* hfi1_ib_rcv - process an incoming packet
* @packet: data packet information
*
* This is called to process an incoming packet at interrupt level.
*/
void hfi1_ib_rcv(struct hfi1_packet *packet)
{
struct hfi1_ctxtdata *rcd = packet->rcd;
trace_input_ibhdr(rcd->dd, packet, !!(rhf_dc_info(packet->rhf)));
hfi1_handle_packet(packet, hfi1_check_mcast(packet->dlid));
}
void hfi1_16B_rcv(struct hfi1_packet *packet)
{
struct hfi1_ctxtdata *rcd = packet->rcd;
trace_input_ibhdr(rcd->dd, packet, false);
hfi1_handle_packet(packet, hfi1_check_mcast(packet->dlid));
}
/*
* This is called from a timer to check for QPs
* which need kernel memory in order to send a packet.
*/
static void mem_timer(struct timer_list *t)
{
struct hfi1_ibdev *dev = from_timer(dev, t, mem_timer);
struct list_head *list = &dev->memwait;
struct rvt_qp *qp = NULL;
struct iowait *wait;
unsigned long flags;
struct hfi1_qp_priv *priv;
write_seqlock_irqsave(&dev->iowait_lock, flags);
if (!list_empty(list)) {
wait = list_first_entry(list, struct iowait, list);
qp = iowait_to_qp(wait);
priv = qp->priv;
list_del_init(&priv->s_iowait.list);
priv->s_iowait.lock = NULL;
/* refcount held until actual wake up */
if (!list_empty(list))
mod_timer(&dev->mem_timer, jiffies + 1);
}
write_sequnlock_irqrestore(&dev->iowait_lock, flags);
if (qp)
hfi1_qp_wakeup(qp, RVT_S_WAIT_KMEM);
}
/*
* This is called with progress side lock held.
*/
/* New API */
static void verbs_sdma_complete(
struct sdma_txreq *cookie,
int status)
{
struct verbs_txreq *tx =
container_of(cookie, struct verbs_txreq, txreq);
struct rvt_qp *qp = tx->qp;
spin_lock(&qp->s_lock);
if (tx->wqe) {
hfi1_send_complete(qp, tx->wqe, IB_WC_SUCCESS);
} else if (qp->ibqp.qp_type == IB_QPT_RC) {
struct hfi1_opa_header *hdr;
hdr = &tx->phdr.hdr;
hfi1_rc_send_complete(qp, hdr);
}
spin_unlock(&qp->s_lock);
hfi1_put_txreq(tx);
}
static int wait_kmem(struct hfi1_ibdev *dev,
struct rvt_qp *qp,
struct hfi1_pkt_state *ps)
{
struct hfi1_qp_priv *priv = qp->priv;
unsigned long flags;
int ret = 0;
spin_lock_irqsave(&qp->s_lock, flags);
if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) {
write_seqlock(&dev->iowait_lock);
list_add_tail(&ps->s_txreq->txreq.list,
&priv->s_iowait.tx_head);
if (list_empty(&priv->s_iowait.list)) {
if (list_empty(&dev->memwait))
mod_timer(&dev->mem_timer, jiffies + 1);
qp->s_flags |= RVT_S_WAIT_KMEM;
list_add_tail(&priv->s_iowait.list, &dev->memwait);
priv->s_iowait.lock = &dev->iowait_lock;
trace_hfi1_qpsleep(qp, RVT_S_WAIT_KMEM);
rvt_get_qp(qp);
}
write_sequnlock(&dev->iowait_lock);
qp->s_flags &= ~RVT_S_BUSY;
ret = -EBUSY;
}
spin_unlock_irqrestore(&qp->s_lock, flags);
return ret;
}
/*
* This routine calls txadds for each sg entry.
*
* Add failures will revert the sge cursor
*/
static noinline int build_verbs_ulp_payload(
struct sdma_engine *sde,
u32 length,
struct verbs_txreq *tx)
{
struct rvt_sge_state *ss = tx->ss;
struct rvt_sge *sg_list = ss->sg_list;
struct rvt_sge sge = ss->sge;
u8 num_sge = ss->num_sge;
u32 len;
int ret = 0;
while (length) {
len = ss->sge.length;
if (len > length)
len = length;
if (len > ss->sge.sge_length)
len = ss->sge.sge_length;
WARN_ON_ONCE(len == 0);
ret = sdma_txadd_kvaddr(
sde->dd,
&tx->txreq,
ss->sge.vaddr,
len);
if (ret)
goto bail_txadd;
rvt_update_sge(ss, len, false);
length -= len;
}
return ret;
bail_txadd:
/* unwind cursor */
ss->sge = sge;
ss->num_sge = num_sge;
ss->sg_list = sg_list;
return ret;
}
/**
* update_tx_opstats - record stats by opcode
* @qp; the qp
* @ps: transmit packet state
* @plen: the plen in dwords
*
* This is a routine to record the tx opstats after a
* packet has been presented to the egress mechanism.
*/
static void update_tx_opstats(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
u32 plen)
{
#ifdef CONFIG_DEBUG_FS
struct hfi1_devdata *dd = dd_from_ibdev(qp->ibqp.device);
struct hfi1_opcode_stats_perctx *s = get_cpu_ptr(dd->tx_opstats);
inc_opstats(plen * 4, &s->stats[ps->opcode]);
put_cpu_ptr(s);
#endif
}
/*
* Build the number of DMA descriptors needed to send length bytes of data.
*
* NOTE: DMA mapping is held in the tx until completed in the ring or
* the tx desc is freed without having been submitted to the ring
*
* This routine ensures all the helper routine calls succeed.
*/
/* New API */
static int build_verbs_tx_desc(
struct sdma_engine *sde,
u32 length,
struct verbs_txreq *tx,
struct hfi1_ahg_info *ahg_info,
u64 pbc)
{
int ret = 0;
struct hfi1_sdma_header *phdr = &tx->phdr;
u16 hdrbytes = tx->hdr_dwords << 2;
u8 extra_bytes = 0;
if (tx->phdr.hdr.hdr_type) {
/*
* hdrbytes accounts for PBC. Need to subtract 8 bytes
* before calculating padding.
*/
extra_bytes = hfi1_get_16b_padding(hdrbytes - 8, length) +
(SIZE_OF_CRC << 2) + SIZE_OF_LT;
}
if (!ahg_info->ahgcount) {
ret = sdma_txinit_ahg(
&tx->txreq,
ahg_info->tx_flags,
hdrbytes + length +
extra_bytes,
ahg_info->ahgidx,
0,
NULL,
0,
verbs_sdma_complete);
if (ret)
goto bail_txadd;
phdr->pbc = cpu_to_le64(pbc);
ret = sdma_txadd_kvaddr(
sde->dd,
&tx->txreq,
phdr,
hdrbytes);
if (ret)
goto bail_txadd;
} else {
ret = sdma_txinit_ahg(
&tx->txreq,
ahg_info->tx_flags,
length,
ahg_info->ahgidx,
ahg_info->ahgcount,
ahg_info->ahgdesc,
hdrbytes,
verbs_sdma_complete);
if (ret)
goto bail_txadd;
}
/* add the ulp payload - if any. tx->ss can be NULL for acks */
if (tx->ss) {
ret = build_verbs_ulp_payload(sde, length, tx);
if (ret)
goto bail_txadd;
}
/* add icrc, lt byte, and padding to flit */
if (extra_bytes)
ret = sdma_txadd_kvaddr(sde->dd, &tx->txreq,
(void *)trail_buf, extra_bytes);
bail_txadd:
return ret;
}
int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
u64 pbc)
{
struct hfi1_qp_priv *priv = qp->priv;
struct hfi1_ahg_info *ahg_info = priv->s_ahg;
u32 hdrwords = qp->s_hdrwords;
u32 len = ps->s_txreq->s_cur_size;
u32 plen;
struct hfi1_ibdev *dev = ps->dev;
struct hfi1_pportdata *ppd = ps->ppd;
struct verbs_txreq *tx;
u8 sc5 = priv->s_sc;
int ret;
u32 dwords;
if (ps->s_txreq->phdr.hdr.hdr_type) {
u8 extra_bytes = hfi1_get_16b_padding((hdrwords << 2), len);
dwords = (len + extra_bytes + (SIZE_OF_CRC << 2) +
SIZE_OF_LT) >> 2;
} else {
dwords = (len + 3) >> 2;
}
plen = hdrwords + dwords + 2;
tx = ps->s_txreq;
if (!sdma_txreq_built(&tx->txreq)) {
if (likely(pbc == 0)) {
u32 vl = sc_to_vlt(dd_from_ibdev(qp->ibqp.device), sc5);
/* No vl15 here */
/* set PBC_DC_INFO bit (aka SC[4]) in pbc */
if (ps->s_txreq->phdr.hdr.hdr_type)
pbc |= PBC_PACKET_BYPASS |
PBC_INSERT_BYPASS_ICRC;
else
pbc |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT);
if (unlikely(hfi1_dbg_fault_opcode(qp, ps->opcode,
false)))
pbc = hfi1_fault_tx(qp, ps->opcode, pbc);
pbc = create_pbc(ppd,
pbc,
qp->srate_mbps,
vl,
plen);
}
tx->wqe = qp->s_wqe;
ret = build_verbs_tx_desc(tx->sde, len, tx, ahg_info, pbc);
if (unlikely(ret))
goto bail_build;
}
ret = sdma_send_txreq(tx->sde, &priv->s_iowait, &tx->txreq,
ps->pkts_sent);
if (unlikely(ret < 0)) {
if (ret == -ECOMM)
goto bail_ecomm;
return ret;
}
update_tx_opstats(qp, ps, plen);
trace_sdma_output_ibhdr(dd_from_ibdev(qp->ibqp.device),
&ps->s_txreq->phdr.hdr, ib_is_sc5(sc5));
return ret;
bail_ecomm:
/* The current one got "sent" */
return 0;
bail_build:
ret = wait_kmem(dev, qp, ps);
if (!ret) {
/* free txreq - bad state */
hfi1_put_txreq(ps->s_txreq);
ps->s_txreq = NULL;
}
return ret;
}
/*
* If we are now in the error state, return zero to flush the
* send work request.
*/
static int pio_wait(struct rvt_qp *qp,
struct send_context *sc,
struct hfi1_pkt_state *ps,
u32 flag)
{
struct hfi1_qp_priv *priv = qp->priv;
struct hfi1_devdata *dd = sc->dd;
struct hfi1_ibdev *dev = &dd->verbs_dev;
unsigned long flags;
int ret = 0;
/*
* Note that as soon as want_buffer() is called and
* possibly before it returns, sc_piobufavail()
* could be called. Therefore, put QP on the I/O wait list before
* enabling the PIO avail interrupt.
*/
spin_lock_irqsave(&qp->s_lock, flags);
if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) {
write_seqlock(&dev->iowait_lock);
list_add_tail(&ps->s_txreq->txreq.list,
&priv->s_iowait.tx_head);
if (list_empty(&priv->s_iowait.list)) {
struct hfi1_ibdev *dev = &dd->verbs_dev;
int was_empty;
dev->n_piowait += !!(flag & RVT_S_WAIT_PIO);
dev->n_piodrain += !!(flag & RVT_S_WAIT_PIO_DRAIN);
qp->s_flags |= flag;
was_empty = list_empty(&sc->piowait);
iowait_queue(ps->pkts_sent, &priv->s_iowait,
&sc->piowait);
priv->s_iowait.lock = &dev->iowait_lock;
trace_hfi1_qpsleep(qp, RVT_S_WAIT_PIO);
rvt_get_qp(qp);
/* counting: only call wantpiobuf_intr if first user */
if (was_empty)
hfi1_sc_wantpiobuf_intr(sc, 1);
}
write_sequnlock(&dev->iowait_lock);
qp->s_flags &= ~RVT_S_BUSY;
ret = -EBUSY;
}
spin_unlock_irqrestore(&qp->s_lock, flags);
return ret;
}
static void verbs_pio_complete(void *arg, int code)
{
struct rvt_qp *qp = (struct rvt_qp *)arg;
struct hfi1_qp_priv *priv = qp->priv;
if (iowait_pio_dec(&priv->s_iowait))
iowait_drain_wakeup(&priv->s_iowait);
}
int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
u64 pbc)
{
struct hfi1_qp_priv *priv = qp->priv;
u32 hdrwords = qp->s_hdrwords;
struct rvt_sge_state *ss = ps->s_txreq->ss;
u32 len = ps->s_txreq->s_cur_size;
u32 dwords;
u32 plen;
struct hfi1_pportdata *ppd = ps->ppd;
u32 *hdr;
u8 sc5;
unsigned long flags = 0;
struct send_context *sc;
struct pio_buf *pbuf;
int wc_status = IB_WC_SUCCESS;
int ret = 0;
pio_release_cb cb = NULL;
u8 extra_bytes = 0;
if (ps->s_txreq->phdr.hdr.hdr_type) {
u8 pad_size = hfi1_get_16b_padding((hdrwords << 2), len);
extra_bytes = pad_size + (SIZE_OF_CRC << 2) + SIZE_OF_LT;
dwords = (len + extra_bytes) >> 2;
hdr = (u32 *)&ps->s_txreq->phdr.hdr.opah;
} else {
dwords = (len + 3) >> 2;
hdr = (u32 *)&ps->s_txreq->phdr.hdr.ibh;
}
plen = hdrwords + dwords + 2;
/* only RC/UC use complete */
switch (qp->ibqp.qp_type) {
case IB_QPT_RC:
case IB_QPT_UC:
cb = verbs_pio_complete;
break;
default:
break;
}
/* vl15 special case taken care of in ud.c */
sc5 = priv->s_sc;
sc = ps->s_txreq->psc;
if (likely(pbc == 0)) {
u8 vl = sc_to_vlt(dd_from_ibdev(qp->ibqp.device), sc5);
/* set PBC_DC_INFO bit (aka SC[4]) in pbc */
if (ps->s_txreq->phdr.hdr.hdr_type)
pbc |= PBC_PACKET_BYPASS | PBC_INSERT_BYPASS_ICRC;
else
pbc |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT);
if (unlikely(hfi1_dbg_fault_opcode(qp, ps->opcode, false)))
pbc = hfi1_fault_tx(qp, ps->opcode, pbc);
pbc = create_pbc(ppd, pbc, qp->srate_mbps, vl, plen);
}
if (cb)
iowait_pio_inc(&priv->s_iowait);
pbuf = sc_buffer_alloc(sc, plen, cb, qp);
if (unlikely(!pbuf)) {
if (cb)
verbs_pio_complete(qp, 0);
if (ppd->host_link_state != HLS_UP_ACTIVE) {
/*
* If we have filled the PIO buffers to capacity and are
* not in an active state this request is not going to
* go out to so just complete it with an error or else a
* ULP or the core may be stuck waiting.
*/
hfi1_cdbg(
PIO,
"alloc failed. state not active, completing");
wc_status = IB_WC_GENERAL_ERR;
goto pio_bail;
} else {
/*
* This is a normal occurrence. The PIO buffs are full
* up but we are still happily sending, well we could be
* so lets continue to queue the request.
*/
hfi1_cdbg(PIO, "alloc failed. state active, queuing");
ret = pio_wait(qp, sc, ps, RVT_S_WAIT_PIO);
if (!ret)
/* txreq not queued - free */
goto bail;
/* tx consumed in wait */
return ret;
}
}
if (dwords == 0) {
pio_copy(ppd->dd, pbuf, pbc, hdr, hdrwords);
} else {
seg_pio_copy_start(pbuf, pbc,
hdr, hdrwords * 4);
if (ss) {
while (len) {
void *addr = ss->sge.vaddr;
u32 slen = ss->sge.length;
if (slen > len)
slen = len;
rvt_update_sge(ss, slen, false);
seg_pio_copy_mid(pbuf, addr, slen);
len -= slen;
}
}
/* add icrc, lt byte, and padding to flit */
if (extra_bytes)
seg_pio_copy_mid(pbuf, trail_buf, extra_bytes);
seg_pio_copy_end(pbuf);
}
update_tx_opstats(qp, ps, plen);
trace_pio_output_ibhdr(dd_from_ibdev(qp->ibqp.device),
&ps->s_txreq->phdr.hdr, ib_is_sc5(sc5));
pio_bail:
if (qp->s_wqe) {
spin_lock_irqsave(&qp->s_lock, flags);
hfi1_send_complete(qp, qp->s_wqe, wc_status);
spin_unlock_irqrestore(&qp->s_lock, flags);
} else if (qp->ibqp.qp_type == IB_QPT_RC) {
spin_lock_irqsave(&qp->s_lock, flags);
hfi1_rc_send_complete(qp, &ps->s_txreq->phdr.hdr);
spin_unlock_irqrestore(&qp->s_lock, flags);
}
ret = 0;
bail:
hfi1_put_txreq(ps->s_txreq);
return ret;
}
/*
* egress_pkey_matches_entry - return 1 if the pkey matches ent (ent
* being an entry from the partition key table), return 0
* otherwise. Use the matching criteria for egress partition keys
* specified in the OPAv1 spec., section 9.1l.7.
*/
static inline int egress_pkey_matches_entry(u16 pkey, u16 ent)
{
u16 mkey = pkey & PKEY_LOW_15_MASK;
u16 mentry = ent & PKEY_LOW_15_MASK;
if (mkey == mentry) {
/*
* If pkey[15] is set (full partition member),
* is bit 15 in the corresponding table element
* clear (limited member)?
*/
if (pkey & PKEY_MEMBER_MASK)
return !!(ent & PKEY_MEMBER_MASK);
return 1;
}
return 0;
}
/**
* egress_pkey_check - check P_KEY of a packet
* @ppd: Physical IB port data
* @slid: SLID for packet
* @bkey: PKEY for header
* @sc5: SC for packet
* @s_pkey_index: It will be used for look up optimization for kernel contexts
* only. If it is negative value, then it means user contexts is calling this
* function.
*
* It checks if hdr's pkey is valid.
*
* Return: 0 on success, otherwise, 1
*/
int egress_pkey_check(struct hfi1_pportdata *ppd, u32 slid, u16 pkey,
u8 sc5, int8_t s_pkey_index)
{
struct hfi1_devdata *dd;
int i;
int is_user_ctxt_mechanism = (s_pkey_index < 0);
if (!(ppd->part_enforce & HFI1_PART_ENFORCE_OUT))
return 0;
/* If SC15, pkey[0:14] must be 0x7fff */
if ((sc5 == 0xf) && ((pkey & PKEY_LOW_15_MASK) != PKEY_LOW_15_MASK))
goto bad;
/* Is the pkey = 0x0, or 0x8000? */
if ((pkey & PKEY_LOW_15_MASK) == 0)
goto bad;
/*
* For the kernel contexts only, if a qp is passed into the function,
* the most likely matching pkey has index qp->s_pkey_index
*/
if (!is_user_ctxt_mechanism &&
egress_pkey_matches_entry(pkey, ppd->pkeys[s_pkey_index])) {
return 0;
}
for (i = 0; i < MAX_PKEY_VALUES; i++) {
if (egress_pkey_matches_entry(pkey, ppd->pkeys[i]))
return 0;
}
bad:
/*
* For the user-context mechanism, the P_KEY check would only happen
* once per SDMA request, not once per packet. Therefore, there's no
* need to increment the counter for the user-context mechanism.
*/
if (!is_user_ctxt_mechanism) {
incr_cntr64(&ppd->port_xmit_constraint_errors);
dd = ppd->dd;
if (!(dd->err_info_xmit_constraint.status &
OPA_EI_STATUS_SMASK)) {
dd->err_info_xmit_constraint.status |=
OPA_EI_STATUS_SMASK;
dd->err_info_xmit_constraint.slid = slid;
dd->err_info_xmit_constraint.pkey = pkey;
}
}
return 1;
}
/**
* get_send_routine - choose an egress routine
*
* Choose an egress routine based on QP type
* and size
*/
static inline send_routine get_send_routine(struct rvt_qp *qp,
struct hfi1_pkt_state *ps)
{
struct hfi1_devdata *dd = dd_from_ibdev(qp->ibqp.device);
struct hfi1_qp_priv *priv = qp->priv;
struct verbs_txreq *tx = ps->s_txreq;
if (unlikely(!(dd->flags & HFI1_HAS_SEND_DMA)))
return dd->process_pio_send;
switch (qp->ibqp.qp_type) {
case IB_QPT_SMI:
return dd->process_pio_send;
case IB_QPT_GSI:
case IB_QPT_UD:
break;
case IB_QPT_UC:
case IB_QPT_RC: {
if (piothreshold &&
tx->s_cur_size <= min(piothreshold, qp->pmtu) &&
(BIT(ps->opcode & OPMASK) & pio_opmask[ps->opcode >> 5]) &&
iowait_sdma_pending(&priv->s_iowait) == 0 &&
!sdma_txreq_built(&tx->txreq))
return dd->process_pio_send;
break;
}
default:
break;
}
return dd->process_dma_send;
}
/**
* hfi1_verbs_send - send a packet
* @qp: the QP to send on
* @ps: the state of the packet to send
*
* Return zero if packet is sent or queued OK.
* Return non-zero and clear qp->s_flags RVT_S_BUSY otherwise.
*/
int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
{
struct hfi1_devdata *dd = dd_from_ibdev(qp->ibqp.device);
struct hfi1_qp_priv *priv = qp->priv;
struct ib_other_headers *ohdr;
send_routine sr;
int ret;
u16 pkey;
u32 slid;
/* locate the pkey within the headers */
if (ps->s_txreq->phdr.hdr.hdr_type) {
struct hfi1_16b_header *hdr = &ps->s_txreq->phdr.hdr.opah;
u8 l4 = hfi1_16B_get_l4(hdr);
if (l4 == OPA_16B_L4_IB_GLOBAL)
ohdr = &hdr->u.l.oth;
else
ohdr = &hdr->u.oth;
slid = hfi1_16B_get_slid(hdr);
pkey = hfi1_16B_get_pkey(hdr);
} else {
struct ib_header *hdr = &ps->s_txreq->phdr.hdr.ibh;
u8 lnh = ib_get_lnh(hdr);
if (lnh == HFI1_LRH_GRH)
ohdr = &hdr->u.l.oth;
else
ohdr = &hdr->u.oth;
slid = ib_get_slid(hdr);
pkey = ib_bth_get_pkey(ohdr);
}
ps->opcode = ib_bth_get_opcode(ohdr);
sr = get_send_routine(qp, ps);
ret = egress_pkey_check(dd->pport, slid, pkey,
priv->s_sc, qp->s_pkey_index);
if (unlikely(ret)) {
/*
* The value we are returning here does not get propagated to
* the verbs caller. Thus we need to complete the request with
* error otherwise the caller could be sitting waiting on the
* completion event. Only do this for PIO. SDMA has its own
* mechanism for handling the errors. So for SDMA we can just
* return.
*/
if (sr == dd->process_pio_send) {
unsigned long flags;
hfi1_cdbg(PIO, "%s() Failed. Completing with err",
__func__);
spin_lock_irqsave(&qp->s_lock, flags);
hfi1_send_complete(qp, qp->s_wqe, IB_WC_GENERAL_ERR);
spin_unlock_irqrestore(&qp->s_lock, flags);
}
return -EINVAL;
}
if (sr == dd->process_dma_send && iowait_pio_pending(&priv->s_iowait))
return pio_wait(qp,
ps->s_txreq->psc,
ps,
RVT_S_WAIT_PIO_DRAIN);
return sr(qp, ps, 0);
}
/**
* hfi1_fill_device_attr - Fill in rvt dev info device attributes.
* @dd: the device data structure
*/
static void hfi1_fill_device_attr(struct hfi1_devdata *dd)
{
struct rvt_dev_info *rdi = &dd->verbs_dev.rdi;
u32 ver = dd->dc8051_ver;
memset(&rdi->dparms.props, 0, sizeof(rdi->dparms.props));
rdi->dparms.props.fw_ver = ((u64)(dc8051_ver_maj(ver)) << 32) |
((u64)(dc8051_ver_min(ver)) << 16) |
(u64)dc8051_ver_patch(ver);
rdi->dparms.props.device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR |
IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT |
IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN |
IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE |
IB_DEVICE_MEM_MGT_EXTENSIONS |
IB_DEVICE_RDMA_NETDEV_OPA_VNIC;
rdi->dparms.props.page_size_cap = PAGE_SIZE;
rdi->dparms.props.vendor_id = dd->oui1 << 16 | dd->oui2 << 8 | dd->oui3;
rdi->dparms.props.vendor_part_id = dd->pcidev->device;
rdi->dparms.props.hw_ver = dd->minrev;
rdi->dparms.props.sys_image_guid = ib_hfi1_sys_image_guid;
rdi->dparms.props.max_mr_size = U64_MAX;
rdi->dparms.props.max_fast_reg_page_list_len = UINT_MAX;
rdi->dparms.props.max_qp = hfi1_max_qps;
rdi->dparms.props.max_qp_wr = hfi1_max_qp_wrs;
rdi->dparms.props.max_sge = hfi1_max_sges;
rdi->dparms.props.max_sge_rd = hfi1_max_sges;
rdi->dparms.props.max_cq = hfi1_max_cqs;
rdi->dparms.props.max_ah = hfi1_max_ahs;
rdi->dparms.props.max_cqe = hfi1_max_cqes;
rdi->dparms.props.max_mr = rdi->lkey_table.max;
rdi->dparms.props.max_fmr = rdi->lkey_table.max;
rdi->dparms.props.max_map_per_fmr = 32767;
rdi->dparms.props.max_pd = hfi1_max_pds;
rdi->dparms.props.max_qp_rd_atom = HFI1_MAX_RDMA_ATOMIC;
rdi->dparms.props.max_qp_init_rd_atom = 255;
rdi->dparms.props.max_srq = hfi1_max_srqs;
rdi->dparms.props.max_srq_wr = hfi1_max_srq_wrs;
rdi->dparms.props.max_srq_sge = hfi1_max_srq_sges;
rdi->dparms.props.atomic_cap = IB_ATOMIC_GLOB;
rdi->dparms.props.max_pkeys = hfi1_get_npkeys(dd);
rdi->dparms.props.max_mcast_grp = hfi1_max_mcast_grps;
rdi->dparms.props.max_mcast_qp_attach = hfi1_max_mcast_qp_attached;
rdi->dparms.props.max_total_mcast_qp_attach =
rdi->dparms.props.max_mcast_qp_attach *
rdi->dparms.props.max_mcast_grp;
}
static inline u16 opa_speed_to_ib(u16 in)
{
u16 out = 0;
if (in & OPA_LINK_SPEED_25G)
out |= IB_SPEED_EDR;
if (in & OPA_LINK_SPEED_12_5G)
out |= IB_SPEED_FDR;
return out;
}
/*
* Convert a single OPA link width (no multiple flags) to an IB value.
* A zero OPA link width means link down, which means the IB width value
* is a don't care.
*/
static inline u16 opa_width_to_ib(u16 in)
{
switch (in) {
case OPA_LINK_WIDTH_1X:
/* map 2x and 3x to 1x as they don't exist in IB */
case OPA_LINK_WIDTH_2X:
case OPA_LINK_WIDTH_3X:
return IB_WIDTH_1X;
default: /* link down or unknown, return our largest width */
case OPA_LINK_WIDTH_4X:
return IB_WIDTH_4X;
}
}
static int query_port(struct rvt_dev_info *rdi, u8 port_num,
struct ib_port_attr *props)
{
struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi);
struct hfi1_devdata *dd = dd_from_dev(verbs_dev);
struct hfi1_pportdata *ppd = &dd->pport[port_num - 1];
u32 lid = ppd->lid;
/* props being zeroed by the caller, avoid zeroing it here */
props->lid = lid ? lid : 0;
props->lmc = ppd->lmc;
/* OPA logical states match IB logical states */
props->state = driver_lstate(ppd);
props->phys_state = driver_pstate(ppd);
props->gid_tbl_len = HFI1_GUIDS_PER_PORT;
props->active_width = (u8)opa_width_to_ib(ppd->link_width_active);
/* see rate_show() in ib core/sysfs.c */
props->active_speed = (u8)opa_speed_to_ib(ppd->link_speed_active);
props->max_vl_num = ppd->vls_supported;
/* Once we are a "first class" citizen and have added the OPA MTUs to
* the core we can advertise the larger MTU enum to the ULPs, for now
* advertise only 4K.
*
* Those applications which are either OPA aware or pass the MTU enum
* from the Path Records to us will get the new 8k MTU. Those that
* attempt to process the MTU enum may fail in various ways.
*/
props->max_mtu = mtu_to_enum((!valid_ib_mtu(hfi1_max_mtu) ?
4096 : hfi1_max_mtu), IB_MTU_4096);
props->active_mtu = !valid_ib_mtu(ppd->ibmtu) ? props->max_mtu :
mtu_to_enum(ppd->ibmtu, IB_MTU_4096);
/*
* sm_lid of 0xFFFF needs special handling so that it can
* be differentiated from a permissve LID of 0xFFFF.
* We set the grh_required flag here so the SA can program
* the DGID in the address handle appropriately
*/
if (props->sm_lid == be16_to_cpu(IB_LID_PERMISSIVE))
props->grh_required = true;
return 0;
}
static int modify_device(struct ib_device *device,
int device_modify_mask,
struct ib_device_modify *device_modify)
{
struct hfi1_devdata *dd = dd_from_ibdev(device);
unsigned i;
int ret;
if (device_modify_mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID |
IB_DEVICE_MODIFY_NODE_DESC)) {
ret = -EOPNOTSUPP;
goto bail;
}
if (device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC) {
memcpy(device->node_desc, device_modify->node_desc,
IB_DEVICE_NODE_DESC_MAX);
for (i = 0; i < dd->num_pports; i++) {
struct hfi1_ibport *ibp = &dd->pport[i].ibport_data;
hfi1_node_desc_chg(ibp);
}
}
if (device_modify_mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) {
ib_hfi1_sys_image_guid =
cpu_to_be64(device_modify->sys_image_guid);
for (i = 0; i < dd->num_pports; i++) {
struct hfi1_ibport *ibp = &dd->pport[i].ibport_data;
hfi1_sys_guid_chg(ibp);
}
}
ret = 0;
bail:
return ret;
}
static int shut_down_port(struct rvt_dev_info *rdi, u8 port_num)
{
struct hfi1_ibdev *verbs_dev = dev_from_rdi(rdi);
struct hfi1_devdata *dd = dd_from_dev(verbs_dev);
struct hfi1_pportdata *ppd = &dd->pport[port_num - 1];
int ret;
set_link_down_reason(ppd, OPA_LINKDOWN_REASON_UNKNOWN, 0,
OPA_LINKDOWN_REASON_UNKNOWN);
ret = set_link_state(ppd, HLS_DN_DOWNDEF);
return ret;
}
static int hfi1_get_guid_be(struct rvt_dev_info *rdi, struct rvt_ibport *rvp,
int guid_index, __be64 *guid)
{
struct hfi1_ibport *ibp = container_of(rvp, struct hfi1_ibport, rvp);
if (guid_index >= HFI1_GUIDS_PER_PORT)
return -EINVAL;
*guid = get_sguid(ibp, guid_index);
return 0;
}
/*
* convert ah port,sl to sc
*/
u8 ah_to_sc(struct ib_device *ibdev, struct rdma_ah_attr *ah)
{
struct hfi1_ibport *ibp = to_iport(ibdev, rdma_ah_get_port_num(ah));
return ibp->sl_to_sc[rdma_ah_get_sl(ah)];
}
static int hfi1_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr)
{
struct hfi1_ibport *ibp;
struct hfi1_pportdata *ppd;
struct hfi1_devdata *dd;
u8 sc5;
if (hfi1_check_mcast(rdma_ah_get_dlid(ah_attr)) &&
!(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH))
return -EINVAL;
/* test the mapping for validity */
ibp = to_iport(ibdev, rdma_ah_get_port_num(ah_attr));
ppd = ppd_from_ibp(ibp);
sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)];
dd = dd_from_ppd(ppd);
if (sc_to_vlt(dd, sc5) > num_vls && sc_to_vlt(dd, sc5) != 0xf)
return -EINVAL;
return 0;
}
static void hfi1_notify_new_ah(struct ib_device *ibdev,
struct rdma_ah_attr *ah_attr,
struct rvt_ah *ah)
{
struct hfi1_ibport *ibp;
struct hfi1_pportdata *ppd;
struct hfi1_devdata *dd;
u8 sc5;
struct rdma_ah_attr *attr = &ah->attr;
/*
* Do not trust reading anything from rvt_ah at this point as it is not
* done being setup. We can however modify things which we need to set.
*/
ibp = to_iport(ibdev, rdma_ah_get_port_num(ah_attr));
ppd = ppd_from_ibp(ibp);
sc5 = ibp->sl_to_sc[rdma_ah_get_sl(&ah->attr)];
hfi1_update_ah_attr(ibdev, attr);
hfi1_make_opa_lid(attr);
dd = dd_from_ppd(ppd);
ah->vl = sc_to_vlt(dd, sc5);
if (ah->vl < num_vls || ah->vl == 15)
ah->log_pmtu = ilog2(dd->vld[ah->vl].mtu);
}
/**
* hfi1_get_npkeys - return the size of the PKEY table for context 0
* @dd: the hfi1_ib device
*/
unsigned hfi1_get_npkeys(struct hfi1_devdata *dd)
{
return ARRAY_SIZE(dd->pport[0].pkeys);
}
static void init_ibport(struct hfi1_pportdata *ppd)
{
struct hfi1_ibport *ibp = &ppd->ibport_data;
size_t sz = ARRAY_SIZE(ibp->sl_to_sc);
int i;
for (i = 0; i < sz; i++) {
ibp->sl_to_sc[i] = i;
ibp->sc_to_sl[i] = i;
}
for (i = 0; i < RVT_MAX_TRAP_LISTS ; i++)
INIT_LIST_HEAD(&ibp->rvp.trap_lists[i].list);
timer_setup(&ibp->rvp.trap_timer, hfi1_handle_trap_timer, 0);
spin_lock_init(&ibp->rvp.lock);
/* Set the prefix to the default value (see ch. 4.1.1) */
ibp->rvp.gid_prefix = IB_DEFAULT_GID_PREFIX;
ibp->rvp.sm_lid = 0;
/*
* Below should only set bits defined in OPA PortInfo.CapabilityMask
* and PortInfo.CapabilityMask3
*/
ibp->rvp.port_cap_flags = IB_PORT_AUTO_MIGR_SUP |
IB_PORT_CAP_MASK_NOTICE_SUP;
ibp->rvp.port_cap3_flags = OPA_CAP_MASK3_IsSharedSpaceSupported;
ibp->rvp.pma_counter_select[0] = IB_PMA_PORT_XMIT_DATA;
ibp->rvp.pma_counter_select[1] = IB_PMA_PORT_RCV_DATA;
ibp->rvp.pma_counter_select[2] = IB_PMA_PORT_XMIT_PKTS;
ibp->rvp.pma_counter_select[3] = IB_PMA_PORT_RCV_PKTS;
ibp->rvp.pma_counter_select[4] = IB_PMA_PORT_XMIT_WAIT;
RCU_INIT_POINTER(ibp->rvp.qp[0], NULL);
RCU_INIT_POINTER(ibp->rvp.qp[1], NULL);
}
static void hfi1_get_dev_fw_str(struct ib_device *ibdev, char *str)
{
struct rvt_dev_info *rdi = ib_to_rvt(ibdev);
struct hfi1_ibdev *dev = dev_from_rdi(rdi);
u32 ver = dd_from_dev(dev)->dc8051_ver;
snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u", dc8051_ver_maj(ver),
dc8051_ver_min(ver), dc8051_ver_patch(ver));
}
static const char * const driver_cntr_names[] = {
/* must be element 0*/
"DRIVER_KernIntr",
"DRIVER_ErrorIntr",
"DRIVER_Tx_Errs",
"DRIVER_Rcv_Errs",
"DRIVER_HW_Errs",
"DRIVER_NoPIOBufs",
"DRIVER_CtxtsOpen",
"DRIVER_RcvLen_Errs",
"DRIVER_EgrBufFull",
"DRIVER_EgrHdrFull"
};
static DEFINE_MUTEX(cntr_names_lock); /* protects the *_cntr_names bufers */
static const char **dev_cntr_names;
static const char **port_cntr_names;
static int num_driver_cntrs = ARRAY_SIZE(driver_cntr_names);
static int num_dev_cntrs;
static int num_port_cntrs;
static int cntr_names_initialized;
/*
* Convert a list of names separated by '\n' into an array of NULL terminated
* strings. Optionally some entries can be reserved in the array to hold extra
* external strings.
*/
static int init_cntr_names(const char *names_in,
const size_t names_len,
int num_extra_names,
int *num_cntrs,
const char ***cntr_names)
{
char *names_out, *p, **q;
int i, n;
n = 0;
for (i = 0; i < names_len; i++)
if (names_in[i] == '\n')
n++;
names_out = kmalloc((n + num_extra_names) * sizeof(char *) + names_len,
GFP_KERNEL);
if (!names_out) {
*num_cntrs = 0;
*cntr_names = NULL;
return -ENOMEM;
}
p = names_out + (n + num_extra_names) * sizeof(char *);
memcpy(p, names_in, names_len);
q = (char **)names_out;
for (i = 0; i < n; i++) {
q[i] = p;
p = strchr(p, '\n');
*p++ = '\0';
}
*num_cntrs = n;
*cntr_names = (const char **)names_out;
return 0;
}
static struct rdma_hw_stats *alloc_hw_stats(struct ib_device *ibdev,
u8 port_num)
{
int i, err;
mutex_lock(&cntr_names_lock);
if (!cntr_names_initialized) {
struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
err = init_cntr_names(dd->cntrnames,
dd->cntrnameslen,
num_driver_cntrs,
&num_dev_cntrs,
&dev_cntr_names);
if (err) {
mutex_unlock(&cntr_names_lock);
return NULL;
}
for (i = 0; i < num_driver_cntrs; i++)
dev_cntr_names[num_dev_cntrs + i] =
driver_cntr_names[i];
err = init_cntr_names(dd->portcntrnames,
dd->portcntrnameslen,
0,
&num_port_cntrs,
&port_cntr_names);
if (err) {
kfree(dev_cntr_names);
dev_cntr_names = NULL;
mutex_unlock(&cntr_names_lock);
return NULL;
}
cntr_names_initialized = 1;
}
mutex_unlock(&cntr_names_lock);
if (!port_num)
return rdma_alloc_hw_stats_struct(
dev_cntr_names,
num_dev_cntrs + num_driver_cntrs,
RDMA_HW_STATS_DEFAULT_LIFESPAN);
else
return rdma_alloc_hw_stats_struct(
port_cntr_names,
num_port_cntrs,
RDMA_HW_STATS_DEFAULT_LIFESPAN);
}
static u64 hfi1_sps_ints(void)
{
unsigned long flags;
struct hfi1_devdata *dd;
u64 sps_ints = 0;
spin_lock_irqsave(&hfi1_devs_lock, flags);
list_for_each_entry(dd, &hfi1_dev_list, list) {
sps_ints += get_all_cpu_total(dd->int_counter);
}
spin_unlock_irqrestore(&hfi1_devs_lock, flags);
return sps_ints;
}
static int get_hw_stats(struct ib_device *ibdev, struct rdma_hw_stats *stats,
u8 port, int index)
{
u64 *values;
int count;
if (!port) {
u64 *stats = (u64 *)&hfi1_stats;
int i;
hfi1_read_cntrs(dd_from_ibdev(ibdev), NULL, &values);
values[num_dev_cntrs] = hfi1_sps_ints();
for (i = 1; i < num_driver_cntrs; i++)
values[num_dev_cntrs + i] = stats[i];
count = num_dev_cntrs + num_driver_cntrs;
} else {
struct hfi1_ibport *ibp = to_iport(ibdev, port);
hfi1_read_portcntrs(ppd_from_ibp(ibp), NULL, &values);
count = num_port_cntrs;
}
memcpy(stats->value, values, count * sizeof(u64));
return count;
}
/**
* hfi1_register_ib_device - register our device with the infiniband core
* @dd: the device data structure
* Return 0 if successful, errno if unsuccessful.
*/
int hfi1_register_ib_device(struct hfi1_devdata *dd)
{
struct hfi1_ibdev *dev = &dd->verbs_dev;
struct ib_device *ibdev = &dev->rdi.ibdev;
struct hfi1_pportdata *ppd = dd->pport;
struct hfi1_ibport *ibp = &ppd->ibport_data;
unsigned i;
int ret;
for (i = 0; i < dd->num_pports; i++)
init_ibport(ppd + i);
/* Only need to initialize non-zero fields. */
timer_setup(&dev->mem_timer, mem_timer, 0);
seqlock_init(&dev->iowait_lock);
seqlock_init(&dev->txwait_lock);
INIT_LIST_HEAD(&dev->txwait);
INIT_LIST_HEAD(&dev->memwait);
ret = verbs_txreq_init(dev);
if (ret)
goto err_verbs_txreq;
/* Use first-port GUID as node guid */
ibdev->node_guid = get_sguid(ibp, HFI1_PORT_GUID_INDEX);
/*
* The system image GUID is supposed to be the same for all
* HFIs in a single system but since there can be other
* device types in the system, we can't be sure this is unique.
*/
if (!ib_hfi1_sys_image_guid)
ib_hfi1_sys_image_guid = ibdev->node_guid;
ibdev->owner = THIS_MODULE;
ibdev->phys_port_cnt = dd->num_pports;
ibdev->dev.parent = &dd->pcidev->dev;
ibdev->modify_device = modify_device;
ibdev->alloc_hw_stats = alloc_hw_stats;
ibdev->get_hw_stats = get_hw_stats;
ibdev->alloc_rdma_netdev = hfi1_vnic_alloc_rn;
/* keep process mad in the driver */
ibdev->process_mad = hfi1_process_mad;
ibdev->get_dev_fw_str = hfi1_get_dev_fw_str;
strncpy(ibdev->node_desc, init_utsname()->nodename,
sizeof(ibdev->node_desc));
/*
* Fill in rvt info object.
*/
dd->verbs_dev.rdi.driver_f.port_callback = hfi1_create_port_files;
dd->verbs_dev.rdi.driver_f.get_pci_dev = get_pci_dev;
dd->verbs_dev.rdi.driver_f.check_ah = hfi1_check_ah;
dd->verbs_dev.rdi.driver_f.notify_new_ah = hfi1_notify_new_ah;
dd->verbs_dev.rdi.driver_f.get_guid_be = hfi1_get_guid_be;
dd->verbs_dev.rdi.driver_f.query_port_state = query_port;
dd->verbs_dev.rdi.driver_f.shut_down_port = shut_down_port;
dd->verbs_dev.rdi.driver_f.cap_mask_chg = hfi1_cap_mask_chg;
/*
* Fill in rvt info device attributes.
*/
hfi1_fill_device_attr(dd);
/* queue pair */
dd->verbs_dev.rdi.dparms.qp_table_size = hfi1_qp_table_size;
dd->verbs_dev.rdi.dparms.qpn_start = 0;
dd->verbs_dev.rdi.dparms.qpn_inc = 1;
dd->verbs_dev.rdi.dparms.qos_shift = dd->qos_shift;
dd->verbs_dev.rdi.dparms.qpn_res_start = kdeth_qp << 16;
dd->verbs_dev.rdi.dparms.qpn_res_end =
dd->verbs_dev.rdi.dparms.qpn_res_start + 65535;
dd->verbs_dev.rdi.dparms.max_rdma_atomic = HFI1_MAX_RDMA_ATOMIC;
dd->verbs_dev.rdi.dparms.psn_mask = PSN_MASK;
dd->verbs_dev.rdi.dparms.psn_shift = PSN_SHIFT;
dd->verbs_dev.rdi.dparms.psn_modify_mask = PSN_MODIFY_MASK;
dd->verbs_dev.rdi.dparms.core_cap_flags = RDMA_CORE_PORT_INTEL_OPA |
RDMA_CORE_CAP_OPA_AH;
dd->verbs_dev.rdi.dparms.max_mad_size = OPA_MGMT_MAD_SIZE;
dd->verbs_dev.rdi.driver_f.qp_priv_alloc = qp_priv_alloc;
dd->verbs_dev.rdi.driver_f.qp_priv_free = qp_priv_free;
dd->verbs_dev.rdi.driver_f.free_all_qps = free_all_qps;
dd->verbs_dev.rdi.driver_f.notify_qp_reset = notify_qp_reset;
dd->verbs_dev.rdi.driver_f.do_send = hfi1_do_send_from_rvt;
dd->verbs_dev.rdi.driver_f.schedule_send = hfi1_schedule_send;
dd->verbs_dev.rdi.driver_f.schedule_send_no_lock = _hfi1_schedule_send;
dd->verbs_dev.rdi.driver_f.get_pmtu_from_attr = get_pmtu_from_attr;
dd->verbs_dev.rdi.driver_f.notify_error_qp = notify_error_qp;
dd->verbs_dev.rdi.driver_f.flush_qp_waiters = flush_qp_waiters;
dd->verbs_dev.rdi.driver_f.stop_send_queue = stop_send_queue;
dd->verbs_dev.rdi.driver_f.quiesce_qp = quiesce_qp;
dd->verbs_dev.rdi.driver_f.notify_error_qp = notify_error_qp;
dd->verbs_dev.rdi.driver_f.mtu_from_qp = mtu_from_qp;
dd->verbs_dev.rdi.driver_f.mtu_to_path_mtu = mtu_to_path_mtu;
dd->verbs_dev.rdi.driver_f.check_modify_qp = hfi1_check_modify_qp;
dd->verbs_dev.rdi.driver_f.modify_qp = hfi1_modify_qp;
dd->verbs_dev.rdi.driver_f.notify_restart_rc = hfi1_restart_rc;
dd->verbs_dev.rdi.driver_f.check_send_wqe = hfi1_check_send_wqe;
/* completeion queue */
snprintf(dd->verbs_dev.rdi.dparms.cq_name,
sizeof(dd->verbs_dev.rdi.dparms.cq_name),
"hfi1_cq%d", dd->unit);
dd->verbs_dev.rdi.dparms.node = dd->node;
/* misc settings */
dd->verbs_dev.rdi.flags = 0; /* Let rdmavt handle it all */
dd->verbs_dev.rdi.dparms.lkey_table_size = hfi1_lkey_table_size;
dd->verbs_dev.rdi.dparms.nports = dd->num_pports;
dd->verbs_dev.rdi.dparms.npkeys = hfi1_get_npkeys(dd);
/* post send table */
dd->verbs_dev.rdi.post_parms = hfi1_post_parms;
ppd = dd->pport;
for (i = 0; i < dd->num_pports; i++, ppd++)
rvt_init_port(&dd->verbs_dev.rdi,
&ppd->ibport_data.rvp,
i,
ppd->pkeys);
ret = rvt_register_device(&dd->verbs_dev.rdi);
if (ret)
goto err_verbs_txreq;
ret = hfi1_verbs_register_sysfs(dd);
if (ret)
goto err_class;
return ret;
err_class:
rvt_unregister_device(&dd->verbs_dev.rdi);
err_verbs_txreq:
verbs_txreq_exit(dev);
dd_dev_err(dd, "cannot register verbs: %d!\n", -ret);
return ret;
}
void hfi1_unregister_ib_device(struct hfi1_devdata *dd)
{
struct hfi1_ibdev *dev = &dd->verbs_dev;
hfi1_verbs_unregister_sysfs(dd);
rvt_unregister_device(&dd->verbs_dev.rdi);
if (!list_empty(&dev->txwait))
dd_dev_err(dd, "txwait list not empty!\n");
if (!list_empty(&dev->memwait))
dd_dev_err(dd, "memwait list not empty!\n");
del_timer_sync(&dev->mem_timer);
verbs_txreq_exit(dev);
mutex_lock(&cntr_names_lock);
kfree(dev_cntr_names);
kfree(port_cntr_names);
dev_cntr_names = NULL;
port_cntr_names = NULL;
cntr_names_initialized = 0;
mutex_unlock(&cntr_names_lock);
}
void hfi1_cnp_rcv(struct hfi1_packet *packet)
{
struct hfi1_ibport *ibp = rcd_to_iport(packet->rcd);
struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
struct ib_header *hdr = packet->hdr;
struct rvt_qp *qp = packet->qp;
u32 lqpn, rqpn = 0;
u16 rlid = 0;
u8 sl, sc5, svc_type;
switch (packet->qp->ibqp.qp_type) {
case IB_QPT_UC:
rlid = rdma_ah_get_dlid(&qp->remote_ah_attr);
rqpn = qp->remote_qpn;
svc_type = IB_CC_SVCTYPE_UC;
break;
case IB_QPT_RC:
rlid = rdma_ah_get_dlid(&qp->remote_ah_attr);
rqpn = qp->remote_qpn;
svc_type = IB_CC_SVCTYPE_RC;
break;
case IB_QPT_SMI:
case IB_QPT_GSI:
case IB_QPT_UD:
svc_type = IB_CC_SVCTYPE_UD;
break;
default:
ibp->rvp.n_pkt_drops++;
return;
}
sc5 = hfi1_9B_get_sc5(hdr, packet->rhf);
sl = ibp->sc_to_sl[sc5];
lqpn = qp->ibqp.qp_num;
process_becn(ppd, sl, rlid, lqpn, rqpn, svc_type);
}
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