2 * Copyright 2010 Nathan Whitehorn
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
18 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
20 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
21 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/module.h>
33 #include <sys/kernel.h>
34 #include <sys/malloc.h>
39 #include <machine/bus.h>
40 #include <machine/intr_machdep.h>
41 #include <machine/md_var.h>
42 #include <machine/platform.h>
44 #include "ps3-hvcall.h"
47 static void ps3pic_identify(driver_t *driver, device_t parent);
48 static int ps3pic_probe(device_t);
49 static int ps3pic_attach(device_t);
51 static void ps3pic_dispatch(device_t, struct trapframe *);
52 static void ps3pic_enable(device_t, u_int, u_int);
53 static void ps3pic_eoi(device_t, u_int);
54 static void ps3pic_ipi(device_t, u_int);
55 static void ps3pic_mask(device_t, u_int);
56 static void ps3pic_unmask(device_t, u_int);
59 volatile uint64_t *bitmap_thread0;
60 volatile uint64_t *mask_thread0;
61 volatile uint64_t *bitmap_thread1;
62 volatile uint64_t *mask_thread1;
64 uint64_t sc_ipi_outlet[2];
69 static device_method_t ps3pic_methods[] = {
70 /* Device interface */
71 DEVMETHOD(device_identify, ps3pic_identify),
72 DEVMETHOD(device_probe, ps3pic_probe),
73 DEVMETHOD(device_attach, ps3pic_attach),
76 DEVMETHOD(pic_dispatch, ps3pic_dispatch),
77 DEVMETHOD(pic_enable, ps3pic_enable),
78 DEVMETHOD(pic_eoi, ps3pic_eoi),
79 DEVMETHOD(pic_ipi, ps3pic_ipi),
80 DEVMETHOD(pic_mask, ps3pic_mask),
81 DEVMETHOD(pic_unmask, ps3pic_unmask),
86 static driver_t ps3pic_driver = {
89 sizeof(struct ps3pic_softc)
92 static devclass_t ps3pic_devclass;
94 DRIVER_MODULE(ps3pic, nexus, ps3pic_driver, ps3pic_devclass, 0, 0);
96 static MALLOC_DEFINE(M_PS3PIC, "ps3pic", "PS3 PIC");
99 ps3pic_identify(driver_t *driver, device_t parent)
101 if (strcmp(installed_platform(), "ps3") != 0)
104 if (device_find_child(parent, "ps3pic", -1) == NULL)
105 BUS_ADD_CHILD(parent, 0, "ps3pic", 0);
109 ps3pic_probe(device_t dev)
111 device_set_desc(dev, "Playstation 3 interrupt controller");
112 return (BUS_PROBE_NOWILDCARD);
116 ps3pic_attach(device_t dev)
118 struct ps3pic_softc *sc;
122 sc = device_get_softc(dev);
124 sc->bitmap_thread0 = contigmalloc(128 /* 512 bits * 2 */, M_PS3PIC,
125 M_NOWAIT | M_ZERO, 0, BUS_SPACE_MAXADDR, 64 /* alignment */,
126 PAGE_SIZE /* boundary */);
127 sc->mask_thread0 = sc->bitmap_thread0 + 4;
128 sc->bitmap_thread1 = sc->bitmap_thread0 + 8;
129 sc->mask_thread1 = sc->bitmap_thread0 + 12;
131 lv1_get_logical_ppe_id(&ppe);
132 thread = 32 - fls(mfctrl());
133 lv1_configure_irq_state_bitmap(ppe, thread,
134 vtophys(sc->bitmap_thread0));
136 sc->sc_ipi_virq = 63;
139 lv1_configure_irq_state_bitmap(ppe, !thread,
140 vtophys(sc->bitmap_thread1));
142 /* Map both IPIs to the same VIRQ to avoid changes in intr_machdep */
143 lv1_construct_event_receive_port(&sc->sc_ipi_outlet[0]);
144 lv1_connect_irq_plug_ext(ppe, thread, sc->sc_ipi_virq,
145 sc->sc_ipi_outlet[0], 0);
146 lv1_construct_event_receive_port(&sc->sc_ipi_outlet[1]);
147 lv1_connect_irq_plug_ext(ppe, !thread, sc->sc_ipi_virq,
148 sc->sc_ipi_outlet[1], 0);
151 powerpc_register_pic(dev, 0, sc->sc_ipi_virq, 1, FALSE);
160 ps3pic_dispatch(device_t dev, struct trapframe *tf)
162 uint64_t bitmap, mask;
164 struct ps3pic_softc *sc;
166 sc = device_get_softc(dev);
168 if (PCPU_GET(cpuid) == 0) {
169 bitmap = sc->bitmap_thread0[0];
170 mask = sc->mask_thread0[0];
172 bitmap = sc->bitmap_thread1[0];
173 mask = sc->mask_thread1[0];
176 while ((irq = ffsl(bitmap & mask) - 1) != -1) {
177 bitmap &= ~(1UL << irq);
178 powerpc_dispatch_intr(sc->sc_vector[63 - irq], tf);
183 ps3pic_enable(device_t dev, u_int irq, u_int vector)
185 struct ps3pic_softc *sc;
187 sc = device_get_softc(dev);
188 sc->sc_vector[irq] = vector;
190 ps3pic_unmask(dev, irq);
194 ps3pic_eoi(device_t dev, u_int irq)
199 lv1_get_logical_ppe_id(&ppe);
200 thread = 32 - fls(mfctrl());
202 lv1_end_of_interrupt_ext(ppe, thread, irq);
206 ps3pic_ipi(device_t dev, u_int cpu)
208 struct ps3pic_softc *sc;
209 sc = device_get_softc(dev);
211 lv1_send_event_locally(sc->sc_ipi_outlet[cpu]);
215 ps3pic_mask(device_t dev, u_int irq)
217 struct ps3pic_softc *sc;
220 sc = device_get_softc(dev);
222 /* Do not mask IPIs! */
223 if (irq == sc->sc_ipi_virq)
226 atomic_clear_64(&sc->mask_thread0[0], 1UL << (63 - irq));
227 atomic_clear_64(&sc->mask_thread1[0], 1UL << (63 - irq));
229 lv1_get_logical_ppe_id(&ppe);
230 lv1_did_update_interrupt_mask(ppe, 0);
231 lv1_did_update_interrupt_mask(ppe, 1);
235 ps3pic_unmask(device_t dev, u_int irq)
237 struct ps3pic_softc *sc;
240 sc = device_get_softc(dev);
241 atomic_set_64(&sc->mask_thread0[0], 1UL << (63 - irq));
242 atomic_set_64(&sc->mask_thread1[0], 1UL << (63 - irq));
244 lv1_get_logical_ppe_id(&ppe);
245 lv1_did_update_interrupt_mask(ppe, 0);
246 lv1_did_update_interrupt_mask(ppe, 1);