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 bool sched_napi); 50 static void cb_ern(struct qman_portal *, struct qman_fq *, 51 const union qm_mr_entry *); 52 static void cb_fqs(struct qman_portal *, struct qman_fq *, 53 const union qm_mr_entry *); 54 55 static struct qm_fd fd, fd_dq; 56 static struct qman_fq fq_base = { 57 .cb.dqrr = cb_dqrr, 58 .cb.ern = cb_ern, 59 .cb.fqs = cb_fqs 60 }; 61 static DECLARE_WAIT_QUEUE_HEAD(waitqueue); 62 static int retire_complete, sdqcr_complete; 63 64 /* Helpers for initialising and "incrementing" a frame descriptor */ 65 static void fd_init(struct qm_fd *fd) 66 { 67 qm_fd_addr_set64(fd, 0xabdeadbeefLLU); 68 qm_fd_set_contig_big(fd, 0x0000ffff); 69 fd->cmd = cpu_to_be32(0xfeedf00d); 70 } 71 72 static void fd_inc(struct qm_fd *fd) 73 { 74 u64 t = qm_fd_addr_get64(fd); 75 int z = t >> 40; 76 unsigned int len, off; 77 enum qm_fd_format fmt; 78 79 t <<= 1; 80 if (z) 81 t |= 1; 82 qm_fd_addr_set64(fd, t); 83 84 fmt = qm_fd_get_format(fd); 85 off = qm_fd_get_offset(fd); 86 len = qm_fd_get_length(fd); 87 len--; 88 qm_fd_set_param(fd, fmt, off, len); 89 90 be32_add_cpu(&fd->cmd, 1); 91 } 92 93 /* The only part of the 'fd' we can't memcmp() is the ppid */ 94 static bool fd_neq(const struct qm_fd *a, const struct qm_fd *b) 95 { 96 bool neq = qm_fd_addr_get64(a) != qm_fd_addr_get64(b); 97 98 neq |= qm_fd_get_format(a) != qm_fd_get_format(b); 99 neq |= a->cfg != b->cfg; 100 neq |= a->cmd != b->cmd; 101 102 return neq; 103 } 104 105 /* test */ 106 static int do_enqueues(struct qman_fq *fq) 107 { 108 unsigned int loop; 109 int err = 0; 110 111 for (loop = 0; loop < NUM_ENQUEUES; loop++) { 112 if (qman_enqueue(fq, &fd)) { 113 pr_crit("qman_enqueue() failed\n"); 114 err = -EIO; 115 } 116 fd_inc(&fd); 117 } 118 119 return err; 120 } 121 122 int qman_test_api(void) 123 { 124 unsigned int flags, frmcnt; 125 int err; 126 struct qman_fq *fq = &fq_base; 127 128 pr_info("%s(): Starting\n", __func__); 129 fd_init(&fd); 130 fd_init(&fd_dq); 131 132 /* Initialise (parked) FQ */ 133 err = qman_create_fq(0, FQ_FLAGS, fq); 134 if (err) { 135 pr_crit("qman_create_fq() failed\n"); 136 goto failed; 137 } 138 err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL); 139 if (err) { 140 pr_crit("qman_init_fq() failed\n"); 141 goto failed; 142 } 143 /* Do enqueues + VDQCR, twice. (Parked FQ) */ 144 err = do_enqueues(fq); 145 if (err) 146 goto failed; 147 pr_info("VDQCR (till-empty);\n"); 148 frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY; 149 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 150 if (err) { 151 pr_crit("qman_volatile_dequeue() failed\n"); 152 goto failed; 153 } 154 err = do_enqueues(fq); 155 if (err) 156 goto failed; 157 pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES); 158 frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL); 159 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 160 if (err) { 161 pr_crit("qman_volatile_dequeue() failed\n"); 162 goto failed; 163 } 164 pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL, 165 NUM_ENQUEUES); 166 frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL); 167 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 168 if (err) { 169 pr_err("qman_volatile_dequeue() failed\n"); 170 goto failed; 171 } 172 173 err = do_enqueues(fq); 174 if (err) 175 goto failed; 176 pr_info("scheduled dequeue (till-empty)\n"); 177 err = qman_schedule_fq(fq); 178 if (err) { 179 pr_crit("qman_schedule_fq() failed\n"); 180 goto failed; 181 } 182 wait_event(waitqueue, sdqcr_complete); 183 184 /* Retire and OOS the FQ */ 185 err = qman_retire_fq(fq, &flags); 186 if (err < 0) { 187 pr_crit("qman_retire_fq() failed\n"); 188 goto failed; 189 } 190 wait_event(waitqueue, retire_complete); 191 if (flags & QMAN_FQ_STATE_BLOCKOOS) { 192 err = -EIO; 193 pr_crit("leaking frames\n"); 194 goto failed; 195 } 196 err = qman_oos_fq(fq); 197 if (err) { 198 pr_crit("qman_oos_fq() failed\n"); 199 goto failed; 200 } 201 qman_destroy_fq(fq); 202 pr_info("%s(): Finished\n", __func__); 203 return 0; 204 205 failed: 206 WARN_ON(1); 207 return err; 208 } 209 210 static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p, 211 struct qman_fq *fq, 212 const struct qm_dqrr_entry *dq, 213 bool sched_napi) 214 { 215 if (WARN_ON(fd_neq(&fd_dq, &dq->fd))) { 216 pr_err("BADNESS: dequeued frame doesn't match;\n"); 217 return qman_cb_dqrr_consume; 218 } 219 fd_inc(&fd_dq); 220 if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_neq(&fd_dq, &fd)) { 221 sdqcr_complete = 1; 222 wake_up(&waitqueue); 223 } 224 return qman_cb_dqrr_consume; 225 } 226 227 static void cb_ern(struct qman_portal *p, struct qman_fq *fq, 228 const union qm_mr_entry *msg) 229 { 230 pr_crit("cb_ern() unimplemented"); 231 WARN_ON(1); 232 } 233 234 static void cb_fqs(struct qman_portal *p, struct qman_fq *fq, 235 const union qm_mr_entry *msg) 236 { 237 u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK); 238 239 if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI)) { 240 pr_crit("unexpected FQS message"); 241 WARN_ON(1); 242 return; 243 } 244 pr_info("Retirement message received\n"); 245 retire_complete = 1; 246 wake_up(&waitqueue); 247 } 248