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 */
fd_init(struct qm_fd * fd)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
fd_inc(struct qm_fd * fd)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 */
fd_neq(const struct qm_fd * a,const struct qm_fd * b)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 */
do_enqueues(struct qman_fq * fq)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
qman_test_api(void)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
cb_dqrr(struct qman_portal * p,struct qman_fq * fq,const struct qm_dqrr_entry * dq)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
cb_ern(struct qman_portal * p,struct qman_fq * fq,const union qm_mr_entry * msg)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
cb_fqs(struct qman_portal * p,struct qman_fq * fq,const union qm_mr_entry * msg)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
