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 = 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++; 90 } 91 92 /* The only part of the 'fd' we can't memcmp() is the ppid */ 93 static int fd_cmp(const struct qm_fd *a, const struct qm_fd *b) 94 { 95 int r = (qm_fd_addr_get64(a) == qm_fd_addr_get64(b)) ? 0 : -1; 96 97 if (!r) { 98 enum qm_fd_format fmt_a, fmt_b; 99 100 fmt_a = qm_fd_get_format(a); 101 fmt_b = qm_fd_get_format(b); 102 r = fmt_a - fmt_b; 103 } 104 if (!r) 105 r = a->cfg - b->cfg; 106 if (!r) 107 r = a->cmd - b->cmd; 108 return r; 109 } 110 111 /* test */ 112 static int do_enqueues(struct qman_fq *fq) 113 { 114 unsigned int loop; 115 int err = 0; 116 117 for (loop = 0; loop < NUM_ENQUEUES; loop++) { 118 if (qman_enqueue(fq, &fd)) { 119 pr_crit("qman_enqueue() failed\n"); 120 err = -EIO; 121 } 122 fd_inc(&fd); 123 } 124 125 return err; 126 } 127 128 int qman_test_api(void) 129 { 130 unsigned int flags, frmcnt; 131 int err; 132 struct qman_fq *fq = &fq_base; 133 134 pr_info("%s(): Starting\n", __func__); 135 fd_init(&fd); 136 fd_init(&fd_dq); 137 138 /* Initialise (parked) FQ */ 139 err = qman_create_fq(0, FQ_FLAGS, fq); 140 if (err) { 141 pr_crit("qman_create_fq() failed\n"); 142 goto failed; 143 } 144 err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL); 145 if (err) { 146 pr_crit("qman_init_fq() failed\n"); 147 goto failed; 148 } 149 /* Do enqueues + VDQCR, twice. (Parked FQ) */ 150 err = do_enqueues(fq); 151 if (err) 152 goto failed; 153 pr_info("VDQCR (till-empty);\n"); 154 frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY; 155 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 156 if (err) { 157 pr_crit("qman_volatile_dequeue() failed\n"); 158 goto failed; 159 } 160 err = do_enqueues(fq); 161 if (err) 162 goto failed; 163 pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES); 164 frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL); 165 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 166 if (err) { 167 pr_crit("qman_volatile_dequeue() failed\n"); 168 goto failed; 169 } 170 pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL, 171 NUM_ENQUEUES); 172 frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL); 173 err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt); 174 if (err) { 175 pr_err("qman_volatile_dequeue() failed\n"); 176 goto failed; 177 } 178 179 err = do_enqueues(fq); 180 if (err) 181 goto failed; 182 pr_info("scheduled dequeue (till-empty)\n"); 183 err = qman_schedule_fq(fq); 184 if (err) { 185 pr_crit("qman_schedule_fq() failed\n"); 186 goto failed; 187 } 188 wait_event(waitqueue, sdqcr_complete); 189 190 /* Retire and OOS the FQ */ 191 err = qman_retire_fq(fq, &flags); 192 if (err < 0) { 193 pr_crit("qman_retire_fq() failed\n"); 194 goto failed; 195 } 196 wait_event(waitqueue, retire_complete); 197 if (flags & QMAN_FQ_STATE_BLOCKOOS) { 198 err = -EIO; 199 pr_crit("leaking frames\n"); 200 goto failed; 201 } 202 err = qman_oos_fq(fq); 203 if (err) { 204 pr_crit("qman_oos_fq() failed\n"); 205 goto failed; 206 } 207 qman_destroy_fq(fq); 208 pr_info("%s(): Finished\n", __func__); 209 return 0; 210 211 failed: 212 WARN_ON(1); 213 return err; 214 } 215 216 static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p, 217 struct qman_fq *fq, 218 const struct qm_dqrr_entry *dq) 219 { 220 if (WARN_ON(fd_cmp(&fd_dq, &dq->fd))) { 221 pr_err("BADNESS: dequeued frame doesn't match;\n"); 222 return qman_cb_dqrr_consume; 223 } 224 fd_inc(&fd_dq); 225 if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_cmp(&fd_dq, &fd)) { 226 sdqcr_complete = 1; 227 wake_up(&waitqueue); 228 } 229 return qman_cb_dqrr_consume; 230 } 231 232 static void cb_ern(struct qman_portal *p, struct qman_fq *fq, 233 const union qm_mr_entry *msg) 234 { 235 pr_crit("cb_ern() unimplemented"); 236 WARN_ON(1); 237 } 238 239 static void cb_fqs(struct qman_portal *p, struct qman_fq *fq, 240 const union qm_mr_entry *msg) 241 { 242 u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK); 243 244 if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI)) { 245 pr_crit("unexpected FQS message"); 246 WARN_ON(1); 247 return; 248 } 249 pr_info("Retirement message received\n"); 250 retire_complete = 1; 251 wake_up(&waitqueue); 252 } 253