2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2017 Conrad Meyer <cem@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/types.h>
34 #include <sys/malloc.h>
35 #include <sys/sysctl.h>
37 #include <opencrypto/xform.h>
43 ccp_queue_decode_lsb_regions(struct ccp_softc *sc, uint64_t lsbmask,
49 qp = &sc->queues[queue];
53 for (i = 0; i < MAX_LSB_REGIONS; i++) {
54 if (((1 << queue) & lsbmask) != 0)
55 qp->lsb_mask |= (1 << i);
56 lsbmask >>= MAX_HW_QUEUES;
60 * Ignore region 0, which has special entries that cannot be used
63 qp->lsb_mask &= ~(1 << 0);
67 * Look for a private LSB for each queue. There are 7 general purpose LSBs
68 * total and 5 queues. PSP will reserve some of both. Firmware limits some
69 * queues' access to some LSBs; we hope it is fairly sane and just use a dumb
70 * greedy algorithm to assign LSBs to queues.
73 ccp_assign_lsb_regions(struct ccp_softc *sc, uint64_t lsbmask)
77 for (q = 0; q < nitems(sc->queues); q++) {
78 if (((1 << q) & sc->valid_queues) == 0)
81 sc->queues[q].private_lsb = -1;
83 /* Intentionally skip specialized 0th LSB */
84 for (i = 1; i < MAX_LSB_REGIONS; i++) {
86 (1ull << (q + (MAX_HW_QUEUES * i)))) != 0) {
87 sc->queues[q].private_lsb = i;
88 lsbmask &= ~(0x1Full << (MAX_HW_QUEUES * i));
93 if (i == MAX_LSB_REGIONS) {
94 device_printf(sc->dev,
95 "Ignoring queue %u with no private LSB\n", q);
96 sc->valid_queues &= ~(1 << q);