1/*-
2 * Copyright (c) 2011-2012 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("$FreeBSD$");
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/bus.h>
35#include <sys/module.h>
36
37#include <machine/bus.h>
38
39#include <dev/fdt/fdt_common.h>
40
41#include <dev/ofw/ofw_bus.h>
42#include <dev/ofw/ofw_bus_subr.h>
43#include <dev/ofw/ofw_subr.h>
44
45#include "bman.h"
46#include "portals.h"
47
48#define	FBMAN_DEVSTR	"Freescale Buffer Manager"
49
50static int bman_fdt_probe(device_t);
51
52static device_method_t bman_methods[] = {
53	/* Device interface */
54	DEVMETHOD(device_probe,		bman_fdt_probe),
55	DEVMETHOD(device_attach,	bman_attach),
56	DEVMETHOD(device_detach,	bman_detach),
57
58	DEVMETHOD(device_suspend,	bman_suspend),
59	DEVMETHOD(device_resume,	bman_resume),
60	DEVMETHOD(device_shutdown,	bman_shutdown),
61
62	{ 0, 0 }
63};
64
65static driver_t bman_driver = {
66	"bman",
67	bman_methods,
68	sizeof(struct bman_softc),
69};
70
71static devclass_t bman_devclass;
72DRIVER_MODULE(bman, simplebus, bman_driver, bman_devclass, 0, 0);
73
74static int
75bman_fdt_probe(device_t dev)
76{
77
78	if (!ofw_bus_is_compatible(dev, "fsl,bman"))
79		return (ENXIO);
80
81	device_set_desc(dev, FBMAN_DEVSTR);
82
83	return (BUS_PROBE_DEFAULT);
84}
85
86/*
87 * BMAN Portals
88 */
89#define	BMAN_PORT_DEVSTR	"Freescale Buffer Manager - Portals"
90
91static device_probe_t bman_portals_fdt_probe;
92static device_attach_t bman_portals_fdt_attach;
93
94static device_method_t bm_portals_methods[] = {
95	/* Device interface */
96	DEVMETHOD(device_probe,		bman_portals_fdt_probe),
97	DEVMETHOD(device_attach,	bman_portals_fdt_attach),
98	DEVMETHOD(device_detach,	bman_portals_detach),
99
100	{ 0, 0 }
101};
102
103static driver_t bm_portals_driver = {
104	"bman-portals",
105	bm_portals_methods,
106	sizeof(struct dpaa_portals_softc),
107};
108
109static devclass_t bm_portals_devclass;
110DRIVER_MODULE(bman_portals, ofwbus, bm_portals_driver, bm_portals_devclass, 0, 0);
111
112static void
113get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep)
114{
115
116	*addrp = 2;
117	*sizep = 1;
118	OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp));
119	OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep));
120}
121
122static int
123bman_portals_fdt_probe(device_t dev)
124{
125
126	if (!ofw_bus_is_compatible(dev, "bman-portals"))
127		return (ENXIO);
128
129	device_set_desc(dev, BMAN_PORT_DEVSTR);
130
131	return (BUS_PROBE_DEFAULT);
132}
133
134static int
135bman_portals_fdt_attach(device_t dev)
136{
137	struct dpaa_portals_softc *sc;
138	struct resource_list_entry *rle;
139	phandle_t node, child, cpu_node;
140	vm_paddr_t portal_pa;
141	vm_size_t portal_size;
142	uint32_t addr, size;
143	ihandle_t cpu;
144	int cpu_num, cpus, intr_rid;
145	struct dpaa_portals_devinfo di;
146	struct ofw_bus_devinfo ofw_di;
147
148	cpus = 0;
149	sc = device_get_softc(dev);
150	sc->sc_dev = dev;
151
152	node = ofw_bus_get_node(dev);
153	get_addr_props(node, &addr, &size);
154
155	/* Find portals tied to CPUs */
156	for (child = OF_child(node); child != 0; child = OF_peer(child)) {
157		if (!fdt_is_compatible(child, "fsl,bman-portal")) {
158			continue;
159		}
160		/* Checkout related cpu */
161		if (OF_getprop(child, "cpu-handle", (void *)&cpu,
162		    sizeof(cpu)) <= 0) {
163			continue;
164		}
165		/* Acquire cpu number */
166		cpu_node = OF_instance_to_package(cpu);
167		if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
168			device_printf(dev, "Could not retrieve CPU number.\n");
169			return (ENXIO);
170		}
171
172		cpus++;
173
174		if (cpus > MAXCPU)
175			break;
176
177		if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
178			device_printf(dev, "could not set up devinfo\n");
179			continue;
180		}
181
182		resource_list_init(&di.di_res);
183		if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
184			device_printf(dev, "%s: could not process 'reg' "
185			    "property\n", ofw_di.obd_name);
186			ofw_bus_gen_destroy_devinfo(&ofw_di);
187			continue;
188		}
189		if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
190			device_printf(dev, "%s: could not process "
191			    "'interrupts' property\n", ofw_di.obd_name);
192			resource_list_free(&di.di_res);
193			ofw_bus_gen_destroy_devinfo(&ofw_di);
194			continue;
195		}
196		di.di_intr_rid = intr_rid;
197
198		ofw_reg_to_paddr(child, 0, &portal_pa, &portal_size, NULL);
199		rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 0);
200
201		if (sc->sc_dp_pa == 0)
202			sc->sc_dp_pa = portal_pa - rle->start;
203
204		portal_size = rle->end + 1;
205		rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 1);
206		portal_size = ulmax(rle->end + 1, portal_size);
207		sc->sc_dp_size = ulmax(sc->sc_dp_size, portal_size);
208
209		if (dpaa_portal_alloc_res(dev, &di, cpu_num))
210			goto err;
211	}
212
213	ofw_bus_gen_destroy_devinfo(&ofw_di);
214
215	return (bman_portals_attach(dev));
216err:
217	resource_list_free(&di.di_res);
218	ofw_bus_gen_destroy_devinfo(&ofw_di);
219	bman_portals_detach(dev);
220	return (ENXIO);
221}
222