summaryrefslogtreecommitdiff
path: root/drivers/soc/fsl/qbman/qman_test_api.c
blob: 7066b2f1467cc40ebd1184f77d280985b5a0f543 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *	 notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *	 notice, this list of conditions and the following disclaimer in the
 *	 documentation and/or other materials provided with the distribution.
 *     * Neither the name of Freescale Semiconductor nor the
 *	 names of its contributors may be used to endorse or promote products
 *	 derived from this software without specific prior written permission.
 *
 * ALTERNATIVELY, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") as published by the Free Software
 * Foundation, either version 2 of that License or (at your option) any
 * later version.
 *
 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "qman_test.h"

#define CGR_ID		27
#define POOL_ID		2
#define FQ_FLAGS	QMAN_FQ_FLAG_DYNAMIC_FQID
#define NUM_ENQUEUES	10
#define NUM_PARTIAL	4
#define PORTAL_SDQCR	(QM_SDQCR_SOURCE_CHANNELS | \
			QM_SDQCR_TYPE_PRIO_QOS | \
			QM_SDQCR_TOKEN_SET(0x98) | \
			QM_SDQCR_CHANNELS_DEDICATED | \
			QM_SDQCR_CHANNELS_POOL(POOL_ID))
#define PORTAL_OPAQUE	((void *)0xf00dbeef)
#define VDQCR_FLAGS	(QMAN_VOLATILE_FLAG_WAIT | QMAN_VOLATILE_FLAG_FINISH)

static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *,
					struct qman_fq *,
					const struct qm_dqrr_entry *);
static void cb_ern(struct qman_portal *, struct qman_fq *,
		   const union qm_mr_entry *);
static void cb_fqs(struct qman_portal *, struct qman_fq *,
		   const union qm_mr_entry *);

static struct qm_fd fd, fd_dq;
static struct qman_fq fq_base = {
	.cb.dqrr = cb_dqrr,
	.cb.ern = cb_ern,
	.cb.fqs = cb_fqs
};
static DECLARE_WAIT_QUEUE_HEAD(waitqueue);
static int retire_complete, sdqcr_complete;

/* Helpers for initialising and "incrementing" a frame descriptor */
static void fd_init(struct qm_fd *fd)
{
	qm_fd_addr_set64(fd, 0xabdeadbeefLLU);
	qm_fd_set_contig_big(fd, 0x0000ffff);
	fd->cmd = cpu_to_be32(0xfeedf00d);
}

static void fd_inc(struct qm_fd *fd)
{
	u64 t = qm_fd_addr_get64(fd);
	int z = t >> 40;
	unsigned int len, off;
	enum qm_fd_format fmt;

	t <<= 1;
	if (z)
		t |= 1;
	qm_fd_addr_set64(fd, t);

	fmt = qm_fd_get_format(fd);
	off = qm_fd_get_offset(fd);
	len = qm_fd_get_length(fd);
	len--;
	qm_fd_set_param(fd, fmt, off, len);

	be32_add_cpu(&fd->cmd, 1);
}

/* The only part of the 'fd' we can't memcmp() is the ppid */
static bool fd_neq(const struct qm_fd *a, const struct qm_fd *b)
{
	bool neq = qm_fd_addr_get64(a) != qm_fd_addr_get64(b);

	neq |= qm_fd_get_format(a) != qm_fd_get_format(b);
	neq |= a->cfg != b->cfg;
	neq |= a->cmd != b->cmd;

	return neq;
}

/* test */
static int do_enqueues(struct qman_fq *fq)
{
	unsigned int loop;
	int err = 0;

	for (loop = 0; loop < NUM_ENQUEUES; loop++) {
		if (qman_enqueue(fq, &fd)) {
			pr_crit("qman_enqueue() failed\n");
			err = -EIO;
		}
		fd_inc(&fd);
	}

	return err;
}

int qman_test_api(void)
{
	unsigned int flags, frmcnt;
	int err;
	struct qman_fq *fq = &fq_base;

	pr_info("%s(): Starting\n", __func__);
	fd_init(&fd);
	fd_init(&fd_dq);

	/* Initialise (parked) FQ */
	err = qman_create_fq(0, FQ_FLAGS, fq);
	if (err) {
		pr_crit("qman_create_fq() failed\n");
		goto failed;
	}
	err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL);
	if (err) {
		pr_crit("qman_init_fq() failed\n");
		goto failed;
	}
	/* Do enqueues + VDQCR, twice. (Parked FQ) */
	err = do_enqueues(fq);
	if (err)
		goto failed;
	pr_info("VDQCR (till-empty);\n");
	frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY;
	err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
	if (err) {
		pr_crit("qman_volatile_dequeue() failed\n");
		goto failed;
	}
	err = do_enqueues(fq);
	if (err)
		goto failed;
	pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES);
	frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL);
	err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
	if (err) {
		pr_crit("qman_volatile_dequeue() failed\n");
		goto failed;
	}
	pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL,
		NUM_ENQUEUES);
	frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL);
	err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
	if (err) {
		pr_err("qman_volatile_dequeue() failed\n");
		goto failed;
	}

	err = do_enqueues(fq);
	if (err)
		goto failed;
	pr_info("scheduled dequeue (till-empty)\n");
	err = qman_schedule_fq(fq);
	if (err) {
		pr_crit("qman_schedule_fq() failed\n");
		goto failed;
	}
	wait_event(waitqueue, sdqcr_complete);

	/* Retire and OOS the FQ */
	err = qman_retire_fq(fq, &flags);
	if (err < 0) {
		pr_crit("qman_retire_fq() failed\n");
		goto failed;
	}
	wait_event(waitqueue, retire_complete);
	if (flags & QMAN_FQ_STATE_BLOCKOOS) {
		err = -EIO;
		pr_crit("leaking frames\n");
		goto failed;
	}
	err = qman_oos_fq(fq);
	if (err) {
		pr_crit("qman_oos_fq() failed\n");
		goto failed;
	}
	qman_destroy_fq(fq);
	pr_info("%s(): Finished\n", __func__);
	return 0;

failed:
	WARN_ON(1);
	return err;
}

static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p,
					struct qman_fq *fq,
					const struct qm_dqrr_entry *dq)
{
	if (WARN_ON(fd_neq(&fd_dq, &dq->fd))) {
		pr_err("BADNESS: dequeued frame doesn't match;\n");
		return qman_cb_dqrr_consume;
	}
	fd_inc(&fd_dq);
	if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_neq(&fd_dq, &fd)) {
		sdqcr_complete = 1;
		wake_up(&waitqueue);
	}
	return qman_cb_dqrr_consume;
}

static void cb_ern(struct qman_portal *p, struct qman_fq *fq,
		   const union qm_mr_entry *msg)
{
	pr_crit("cb_ern() unimplemented");
	WARN_ON(1);
}

static void cb_fqs(struct qman_portal *p, struct qman_fq *fq,
		   const union qm_mr_entry *msg)
{
	u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK);

	if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI)) {
		pr_crit("unexpected FQS message");
		WARN_ON(1);
		return;
	}
	pr_info("Retirement message received\n");
	retire_complete = 1;
	wake_up(&waitqueue);
}