xref: /freebsd/sys/dev/dpaa/qman_fdt.c (revision e6bfd18d21b225af6a0ed67ceeaf1293b7b9eba5)
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 #include <sys/smp.h>
37 
38 #include <machine/bus.h>
39 
40 #include <dev/ofw/ofw_bus.h>
41 #include <dev/ofw/ofw_bus_subr.h>
42 #include <dev/ofw/ofw_subr.h>
43 
44 #include "qman.h"
45 #include "portals.h"
46 
47 #define	FQMAN_DEVSTR	"Freescale Queue Manager"
48 
49 static int qman_fdt_probe(device_t);
50 
51 static device_method_t qman_methods[] = {
52 	/* Device interface */
53 	DEVMETHOD(device_probe,		qman_fdt_probe),
54 	DEVMETHOD(device_attach,	qman_attach),
55 	DEVMETHOD(device_detach,	qman_detach),
56 
57 	DEVMETHOD(device_suspend,	qman_suspend),
58 	DEVMETHOD(device_resume,	qman_resume),
59 	DEVMETHOD(device_shutdown,	qman_shutdown),
60 
61 	{ 0, 0 }
62 };
63 
64 static driver_t qman_driver = {
65 	"qman",
66 	qman_methods,
67 	sizeof(struct qman_softc),
68 };
69 
70 EARLY_DRIVER_MODULE(qman, simplebus, qman_driver, 0, 0, BUS_PASS_SUPPORTDEV);
71 
72 static int
73 qman_fdt_probe(device_t dev)
74 {
75 
76 	if (!ofw_bus_is_compatible(dev, "fsl,qman"))
77 		return (ENXIO);
78 
79 	device_set_desc(dev, FQMAN_DEVSTR);
80 
81 	return (BUS_PROBE_DEFAULT);
82 }
83 
84 /*
85  * QMAN Portals
86  */
87 #define	QMAN_PORT_DEVSTR	"Freescale Queue Manager - Portals"
88 
89 static device_probe_t qman_portals_fdt_probe;
90 static device_attach_t qman_portals_fdt_attach;
91 
92 static device_method_t qm_portals_methods[] = {
93 	/* Device interface */
94 	DEVMETHOD(device_probe,		qman_portals_fdt_probe),
95 	DEVMETHOD(device_attach,	qman_portals_fdt_attach),
96 	DEVMETHOD(device_detach,	qman_portals_detach),
97 
98 	{ 0, 0 }
99 };
100 
101 static driver_t qm_portals_driver = {
102 	"qman-portals",
103 	qm_portals_methods,
104 	sizeof(struct dpaa_portals_softc),
105 };
106 
107 EARLY_DRIVER_MODULE(qman_portals, ofwbus, qm_portals_driver, 0, 0,
108     BUS_PASS_BUS);
109 
110 static void
111 get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep)
112 {
113 
114 	*addrp = 2;
115 	*sizep = 1;
116 	OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp));
117 	OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep));
118 }
119 
120 static int
121 qman_portals_fdt_probe(device_t dev)
122 {
123 	phandle_t node;
124 
125 	if (ofw_bus_is_compatible(dev, "simple-bus")) {
126 		node = ofw_bus_get_node(dev);
127 		for (node = OF_child(node); node > 0; node = OF_peer(node)) {
128 			if (ofw_bus_node_is_compatible(node, "fsl,qman-portal"))
129 				break;
130 		}
131 		if (node <= 0)
132 			return (ENXIO);
133 	} else if (!ofw_bus_is_compatible(dev, "fsl,qman-portals"))
134 		return (ENXIO);
135 
136 	device_set_desc(dev, QMAN_PORT_DEVSTR);
137 
138 	return (BUS_PROBE_DEFAULT);
139 }
140 
141 static phandle_t
142 qman_portal_find_cpu(int cpu)
143 {
144 	phandle_t node;
145 	pcell_t reg;
146 
147 	node = OF_finddevice("/cpus");
148 	if (node == -1)
149 		return (-1);
150 
151 	for (node = OF_child(node); node != 0; node = OF_peer(node)) {
152 		if (OF_getprop(node, "reg", &reg, sizeof(reg)) <= 0)
153 			continue;
154 		if (reg == cpu)
155 			return (node);
156 	}
157 	return (-1);
158 }
159 
160 static int
161 qman_portals_fdt_attach(device_t dev)
162 {
163 	struct dpaa_portals_softc *sc;
164 	phandle_t node, child, cpu_node;
165 	vm_paddr_t portal_pa, portal_par_pa;
166 	vm_size_t portal_size;
167 	uint32_t addr, paddr, size;
168 	ihandle_t cpu;
169 	int cpu_num, cpus, intr_rid;
170 	struct dpaa_portals_devinfo di;
171 	struct ofw_bus_devinfo ofw_di = {};
172 	cell_t *range;
173 	int nrange;
174 	int i;
175 
176 	cpus = 0;
177 	sc = device_get_softc(dev);
178 	sc->sc_dev = dev;
179 
180 	node = ofw_bus_get_node(dev);
181 
182 	/* Get this node's range */
183 	get_addr_props(ofw_bus_get_node(device_get_parent(dev)), &paddr, &size);
184 	get_addr_props(node, &addr, &size);
185 
186 	nrange = OF_getencprop_alloc_multi(node, "ranges",
187 	    sizeof(*range), (void **)&range);
188 	if (nrange < addr + paddr + size)
189 		return (ENXIO);
190 	portal_pa = portal_par_pa = 0;
191 	portal_size = 0;
192 	for (i = 0; i < addr; i++) {
193 		portal_pa <<= 32;
194 		portal_pa |= range[i];
195 	}
196 	for (; i < paddr + addr; i++) {
197 		portal_par_pa <<= 32;
198 		portal_par_pa |= range[i];
199 	}
200 	portal_pa += portal_par_pa;
201 	for (; i < size + paddr + addr; i++) {
202 		portal_size = (uintmax_t)portal_size << 32;
203 		portal_size |= range[i];
204 	}
205 	OF_prop_free(range);
206 	sc->sc_dp_size = portal_size;
207 	sc->sc_dp_pa = portal_pa;
208 
209 	/* Find portals tied to CPUs */
210 	for (child = OF_child(node); child != 0; child = OF_peer(child)) {
211 		if (cpus >= mp_ncpus)
212 			break;
213 		if (!ofw_bus_node_is_compatible(child, "fsl,qman-portal")) {
214 			continue;
215 		}
216 		/* Checkout related cpu */
217 		if (OF_getprop(child, "cpu-handle", (void *)&cpu,
218 		    sizeof(cpu)) <= 0) {
219 			cpu = qman_portal_find_cpu(cpus);
220 			if (cpu <= 0)
221 				continue;
222 		}
223 		/* Acquire cpu number */
224 		cpu_node = OF_instance_to_package(cpu);
225 		if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) {
226 			device_printf(dev, "Could not retrieve CPU number.\n");
227 			return (ENXIO);
228 		}
229 
230 		cpus++;
231 
232 		if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) {
233 			device_printf(dev, "could not set up devinfo\n");
234 			continue;
235 		}
236 
237 		resource_list_init(&di.di_res);
238 		if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) {
239 			device_printf(dev, "%s: could not process 'reg' "
240 			    "property\n", ofw_di.obd_name);
241 			ofw_bus_gen_destroy_devinfo(&ofw_di);
242 			continue;
243 		}
244 		if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) {
245 			device_printf(dev, "%s: could not process "
246 			    "'interrupts' property\n", ofw_di.obd_name);
247 			resource_list_free(&di.di_res);
248 			ofw_bus_gen_destroy_devinfo(&ofw_di);
249 			continue;
250 		}
251 		di.di_intr_rid = intr_rid;
252 
253 		if (dpaa_portal_alloc_res(dev, &di, cpu_num))
254 			goto err;
255 	}
256 
257 	ofw_bus_gen_destroy_devinfo(&ofw_di);
258 
259 	return (qman_portals_attach(dev));
260 err:
261 	resource_list_free(&di.di_res);
262 	ofw_bus_gen_destroy_devinfo(&ofw_di);
263 	qman_portals_detach(dev);
264 	return (ENXIO);
265 }
266