1 /* Copyright 2008 - 2016 Freescale Semiconductor, Inc. 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions are met: 5 * * Redistributions of source code must retain the above copyright 6 * notice, this list of conditions and the following disclaimer. 7 * * Redistributions in binary form must reproduce the above copyright 8 * notice, this list of conditions and the following disclaimer in the 9 * documentation and/or other materials provided with the distribution. 10 * * Neither the name of Freescale Semiconductor nor the 11 * names of its contributors may be used to endorse or promote products 12 * derived from this software without specific prior written permission. 13 * 14 * ALTERNATIVELY, this software may be distributed under the terms of the 15 * GNU General Public License ("GPL") as published by the Free Software 16 * Foundation, either version 2 of that License or (at your option) any 17 * later version. 18 * 19 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "qman_test.h" 32 33 #define CGR_ID 27 34 #define POOL_ID 2 35 #define FQ_FLAGS QMAN_FQ_FLAG_DYNAMIC_FQID 36 #define NUM_ENQUEUES 10 37 #define NUM_PARTIAL 4 38 #define PORTAL_SDQCR (QM_SDQCR_SOURCE_CHANNELS | \ 39 QM_SDQCR_TYPE_PRIO_QOS | \ 40 QM_SDQCR_TOKEN_SET(0x98) | \ 41 QM_SDQCR_CHANNELS_DEDICATED | \ 42 QM_SDQCR_CHANNELS_POOL(POOL_ID)) 43 #define PORTAL_OPAQUE ((void *)0xf00dbeef) 44 #define VDQCR_FLAGS (QMAN_VOLATILE_FLAG_WAIT | QMAN_VOLATILE_FLAG_FINISH) 45 46 static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *, 47 struct qman_fq *, 48 const struct qm_dqrr_entry *); 49 static void cb_ern(struct qman_portal *, struct qman_fq *, 50 const union qm_mr_entry *); 51 static void cb_fqs(struct qman_portal *, struct qman_fq *, 52 const union qm_mr_entry *); 53 54 static struct qm_fd fd, fd_dq; 55 static struct qman_fq fq_base = { 56 .cb.dqrr = cb_dqrr, 57 .cb.ern = cb_ern, 58 .cb.fqs = cb_fqs 59 }; 60 static DECLARE_WAIT_QUEUE_HEAD(waitqueue); 61 static int retire_complete, sdqcr_complete; 62 63 /* Helpers for initialising and "incrementing" a frame descriptor */ 64 static void fd_init(struct qm_fd *fd) 65 { 66 qm_fd_addr_set64(fd, 0xabdeadbeefLLU); 67 qm_fd_set_contig_big(fd, 0x0000ffff); 68 fd->cmd = cpu_to_be32(0xfeedf00d); 69 } 70 71 static void fd_inc(struct qm_fd *fd) 72 { 73 u64 t = qm_fd_addr_get64(fd); 74 int z = t >> 40; 75 unsigned int len, off; 76 enum qm_fd_format fmt; 77 78 t <<= 1; 79 if (z) 80 t |= 1; 81 qm_fd_addr_set64(fd, t); 82 83 fmt = qm_fd_get_format(fd); 84 off = qm_fd_get_offset(fd); 85 len = qm_fd_get_length(fd); 86 len--; 87 qm_fd_set_param(fd, fmt, off, len); 88 89 fd->cmd = cpu_to_be32(be32_to_cpu(fd->cmd) + 1); 90 } 91 92 /* The only part of the 'fd' we can't memcmp() is the ppid */ 93 static bool fd_neq(const struct qm_fd *a, const struct qm_fd *b) 94 { 95 bool neq = qm_fd_addr_get64(a) != qm_fd_addr_get64(b); 96 97 neq |= qm_fd_get_format(a) != qm_fd_get_format(b); 98 neq |= a->cfg != b->cfg; 99 neq |= a->cmd != b->cmd; 100 101 return neq; 102 } 103 104 /* test */ 105 static int do_enqueues(struct qman_fq *fq) 106 { 107 unsigned int loop; 108 int err = 0; 109 110 for (loop = 0; loop < NUM_ENQUEUES; loop++) { 111 if (qman_enqueue(fq, &fd)) { 112 pr_crit("qman_enqueue() failed\n"); 113 err = -EIO; 114 } 115 fd_inc(&fd); 116 } 117 118 return err; 119 } 120 121 int qman_test_api(void) 122 { 123 unsigned int flags, frmcnt; 124 int err; 125 struct qman_fq *fq = &fq_base; 126 127 pr_info("%s(): Starting\n", __func__); 128 fd_init(&fd); 129 fd_init(&fd_dq); 130 131 /* Initialise (parked) FQ */ 132 err = qman_create_fq(0, FQ_FLAGS, fq); 133 if (err) { 134 pr_crit("qman_create_fq() failed\n"); 135 goto failed; 136 } 137 err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL); 138 if (err) { 139 pr_crit("qman_init_fq() failed\n"); 140 goto failed; 141 } 142 /* Do enqueues + VDQCR, twice. (Parked FQ) */ 143 err = do_enqueues(fq); 144 if (err) 145 goto failed; 146 pr_info("VDQCR (till-empty);\n"); 147 frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY; 148 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 149 if (err) { 150 pr_crit("qman_volatile_dequeue() failed\n"); 151 goto failed; 152 } 153 err = do_enqueues(fq); 154 if (err) 155 goto failed; 156 pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES); 157 frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL); 158 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 159 if (err) { 160 pr_crit("qman_volatile_dequeue() failed\n"); 161 goto failed; 162 } 163 pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL, 164 NUM_ENQUEUES); 165 frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL); 166 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 167 if (err) { 168 pr_err("qman_volatile_dequeue() failed\n"); 169 goto failed; 170 } 171 172 err = do_enqueues(fq); 173 if (err) 174 goto failed; 175 pr_info("scheduled dequeue (till-empty)\n"); 176 err = qman_schedule_fq(fq); 177 if (err) { 178 pr_crit("qman_schedule_fq() failed\n"); 179 goto failed; 180 } 181 wait_event(waitqueue, sdqcr_complete); 182 183 /* Retire and OOS the FQ */ 184 err = qman_retire_fq(fq, &flags); 185 if (err < 0) { 186 pr_crit("qman_retire_fq() failed\n"); 187 goto failed; 188 } 189 wait_event(waitqueue, retire_complete); 190 if (flags & QMAN_FQ_STATE_BLOCKOOS) { 191 err = -EIO; 192 pr_crit("leaking frames\n"); 193 goto failed; 194 } 195 err = qman_oos_fq(fq); 196 if (err) { 197 pr_crit("qman_oos_fq() failed\n"); 198 goto failed; 199 } 200 qman_destroy_fq(fq); 201 pr_info("%s(): Finished\n", __func__); 202 return 0; 203 204 failed: 205 WARN_ON(1); 206 return err; 207 } 208 209 static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p, 210 struct qman_fq *fq, 211 const struct qm_dqrr_entry *dq) 212 { 213 if (WARN_ON(fd_neq(&fd_dq, &dq->fd))) { 214 pr_err("BADNESS: dequeued frame doesn't match;\n"); 215 return qman_cb_dqrr_consume; 216 } 217 fd_inc(&fd_dq); 218 if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_neq(&fd_dq, &fd)) { 219 sdqcr_complete = 1; 220 wake_up(&waitqueue); 221 } 222 return qman_cb_dqrr_consume; 223 } 224 225 static void cb_ern(struct qman_portal *p, struct qman_fq *fq, 226 const union qm_mr_entry *msg) 227 { 228 pr_crit("cb_ern() unimplemented"); 229 WARN_ON(1); 230 } 231 232 static void cb_fqs(struct qman_portal *p, struct qman_fq *fq, 233 const union qm_mr_entry *msg) 234 { 235 u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK); 236 237 if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI)) { 238 pr_crit("unexpected FQS message"); 239 WARN_ON(1); 240 return; 241 } 242 pr_info("Retirement message received\n"); 243 retire_complete = 1; 244 wake_up(&waitqueue); 245 } 246