qman_portals.c revision 302408 
1/*-
2 * Copyright (c) 2012 Semihalf.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include "opt_platform.h"
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: stable/11/sys/dev/dpaa/qman_portals.c 296177 2016-02-29 03:38:00Z jhibbits $");
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/bus.h>
35#include <sys/lock.h>
36#include <sys/module.h>
37#include <sys/mutex.h>
38#include <sys/proc.h>
39#include <sys/pcpu.h>
40#include <sys/sched.h>
41
42#include <machine/bus.h>
43#include <machine/tlb.h>
44
45#include <dev/ofw/ofw_bus.h>
46#include <dev/ofw/ofw_bus_subr.h>
47
48#include <powerpc/mpc85xx/mpc85xx.h>
49
50#include "qman.h"
51#include "portals.h"
52
53extern e_RxStoreResponse qman_received_frame_callback(t_Handle, t_Handle,
54    t_Handle, uint32_t, t_DpaaFD *);
55extern e_RxStoreResponse qman_rejected_frame_callback(t_Handle, t_Handle,
56    t_Handle, uint32_t, t_DpaaFD *, t_QmRejectedFrameInfo *);
57
58t_Handle qman_portal_setup(struct qman_softc *);
59
60struct dpaa_portals_softc *qp_sc;
61
62int
63qman_portals_attach(device_t dev)
64{
65	struct dpaa_portals_softc *sc;
66
67	sc = qp_sc = device_get_softc(dev);
68
69	/* Map bman portal to physical address space */
70	if (law_enable(OCP85XX_TGTIF_QMAN, sc->sc_dp_pa, sc->sc_dp_size)) {
71		qman_portals_detach(dev);
72		return (ENXIO);
73	}
74	/* Set portal properties for XX_VirtToPhys() */
75	XX_PortalSetInfo(dev);
76
77	return (bus_generic_attach(dev));
78}
79
80int
81qman_portals_detach(device_t dev)
82{
83	struct dpaa_portals_softc *sc;
84	int i;
85
86	qp_sc = NULL;
87	sc = device_get_softc(dev);
88
89	for (i = 0; i < ARRAY_SIZE(sc->sc_dp); i++) {
90		if (sc->sc_dp[i].dp_ph != NULL) {
91			thread_lock(curthread);
92			sched_bind(curthread, i);
93			thread_unlock(curthread);
94
95			QM_PORTAL_Free(sc->sc_dp[i].dp_ph);
96
97			thread_lock(curthread);
98			sched_unbind(curthread);
99			thread_unlock(curthread);
100		}
101
102		if (sc->sc_dp[i].dp_ires != NULL) {
103			XX_DeallocIntr((int)sc->sc_dp[i].dp_ires);
104			bus_release_resource(dev, SYS_RES_IRQ,
105			    sc->sc_dp[i].dp_irid, sc->sc_dp[i].dp_ires);
106		}
107	}
108	for (i = 0; i < ARRAY_SIZE(sc->sc_rres); i++) {
109		if (sc->sc_rres[i] != NULL)
110			bus_release_resource(dev, SYS_RES_MEMORY,
111			    sc->sc_rrid[i],
112			    sc->sc_rres[i]);
113	}
114
115	return (0);
116}
117
118t_Handle
119qman_portal_setup(struct qman_softc *qsc)
120{
121	struct dpaa_portals_softc *sc;
122	t_QmPortalParam qpp;
123	unsigned int cpu, p;
124	t_Handle portal;
125
126	/* Return NULL if we're not ready or while detach */
127	if (qp_sc == NULL)
128		return (NULL);
129
130	sc = qp_sc;
131
132	sched_pin();
133	portal = NULL;
134	cpu = PCPU_GET(cpuid);
135
136	/* Check if portal is ready */
137	while (atomic_cmpset_acq_32((uint32_t *)&sc->sc_dp[cpu].dp_ph,
138	    0, -1) == 0) {
139		p = atomic_load_acq_32((uint32_t *)&sc->sc_dp[cpu].dp_ph);
140
141		/* Return if portal is already initialized */
142		if (p != 0 && p != -1) {
143			sched_unpin();
144			return ((t_Handle)p);
145		}
146
147		/* Not inititialized and "owned" by another thread */
148		thread_lock(curthread);
149		mi_switch(SW_VOL, NULL);
150		thread_unlock(curthread);
151	}
152
153	/* Map portal registers */
154	dpaa_portal_map_registers(sc);
155
156	/* Configure and initialize portal */
157	qpp.ceBaseAddress = rman_get_bushandle(sc->sc_rres[0]);
158	qpp.ciBaseAddress = rman_get_bushandle(sc->sc_rres[1]);
159	qpp.h_Qm = qsc->sc_qh;
160	qpp.swPortalId = cpu;
161	qpp.irq = (int)sc->sc_dp[cpu].dp_ires;
162	qpp.fdLiodnOffset = 0;
163	qpp.f_DfltFrame = qman_received_frame_callback;
164	qpp.f_RejectedFrame = qman_rejected_frame_callback;
165	qpp.h_App = qsc;
166
167	portal = QM_PORTAL_Config(&qpp);
168	if (portal == NULL)
169		goto err;
170
171	if (QM_PORTAL_Init(portal) != E_OK)
172		goto err;
173
174	if (QM_PORTAL_AddPoolChannel(portal, QMAN_COMMON_POOL_CHANNEL) != E_OK)
175		goto err;
176
177	atomic_store_rel_32((uint32_t *)&sc->sc_dp[cpu].dp_ph,
178	    (uint32_t)portal);
179	sched_unpin();
180
181	return (portal);
182
183err:
184	if (portal != NULL)
185		QM_PORTAL_Free(portal);
186
187	atomic_store_rel_32((uint32_t *)&sc->sc_dp[cpu].dp_ph, 0);
188	sched_unpin();
189
190	return (NULL);
191}
192