ps3pic.c revision 217044
1132501Snyan/*- 2132501Snyan * Copyright 2010 Nathan Whitehorn 3146216Snyan * 4132501Snyan * Redistribution and use in source and binary forms, with or without 5132501Snyan * modification, are permitted provided that the following conditions 6132501Snyan * are met: 7132501Snyan * 1. Redistributions of source code must retain the above copyright 8132501Snyan * notice, this list of conditions and the following disclaimer. 9132501Snyan * 2. Redistributions in binary form must reproduce the above copyright 10132501Snyan * notice, this list of conditions and the following disclaimer in the 11132501Snyan * documentation and/or other materials provided with the distribution. 12132501Snyan * 13132501Snyan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14132501Snyan * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15132501Snyan * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16132501Snyan * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17132501Snyan * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 18132501Snyan * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19132501Snyan * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 20132501Snyan * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 21132501Snyan * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22132501Snyan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23132501Snyan * SUCH DAMAGE. 24132501Snyan * 25132501Snyan * $FreeBSD: head/sys/powerpc/ps3/ps3pic.c 217044 2011-01-06 04:12:29Z nwhitehorn $ 26132501Snyan */ 27132501Snyan 28132501Snyan#include <sys/param.h> 29132501Snyan#include <sys/systm.h> 30132501Snyan#include <sys/module.h> 31132501Snyan#include <sys/bus.h> 32132501Snyan#include <sys/conf.h> 33132501Snyan#include <sys/kernel.h> 34132501Snyan#include <sys/malloc.h> 35132501Snyan 36132501Snyan#include <vm/vm.h> 37132501Snyan#include <vm/pmap.h> 38137365Snjl 39132501Snyan#include <machine/bus.h> 40150003Sobrien#include <machine/intr_machdep.h> 41132501Snyan#include <machine/md_var.h> 42132501Snyan#include <machine/platform.h> 43138825Snjl 44138825Snjl#include "ps3-hvcall.h" 45138825Snjl#include "pic_if.h" 46132501Snyan 47132501Snyanstatic void ps3pic_identify(driver_t *driver, device_t parent); 48132501Snyanstatic int ps3pic_probe(device_t); 49132501Snyanstatic int ps3pic_attach(device_t); 50132501Snyan 51132501Snyanstatic void ps3pic_dispatch(device_t, struct trapframe *); 52132501Snyanstatic void ps3pic_enable(device_t, u_int, u_int); 53132501Snyanstatic void ps3pic_eoi(device_t, u_int); 54137365Snjlstatic void ps3pic_ipi(device_t, u_int); 55137365Snjlstatic void ps3pic_mask(device_t, u_int); 56137365Snjlstatic void ps3pic_unmask(device_t, u_int); 57137365Snjlstatic uint32_t ps3pic_id(device_t dev); 58137365Snjl 59137365Snjlstruct ps3pic_softc { 60132611Snjl uint64_t *bitmap_thread0; 61132501Snyan uint64_t *mask_thread0; 62132501Snyan uint64_t *bitmap_thread1; 63132501Snyan uint64_t *mask_thread1; 64132501Snyan 65132501Snyan uint64_t sc_ipi_outlet[2]; 66132501Snyan int sc_vector[64]; 67132501Snyan}; 68132501Snyan 69132501Snyanstatic device_method_t ps3pic_methods[] = { 70132501Snyan /* Device interface */ 71132501Snyan DEVMETHOD(device_identify, ps3pic_identify), 72137365Snjl DEVMETHOD(device_probe, ps3pic_probe), 73137365Snjl DEVMETHOD(device_attach, ps3pic_attach), 74132501Snyan 75132501Snyan /* PIC interface */ 76132501Snyan DEVMETHOD(pic_dispatch, ps3pic_dispatch), 77132501Snyan DEVMETHOD(pic_enable, ps3pic_enable), 78132501Snyan DEVMETHOD(pic_eoi, ps3pic_eoi), 79132501Snyan DEVMETHOD(pic_id, ps3pic_id), 80132501Snyan DEVMETHOD(pic_ipi, ps3pic_ipi), 81132501Snyan DEVMETHOD(pic_mask, ps3pic_mask), 82188162Simp DEVMETHOD(pic_unmask, ps3pic_unmask), 83132501Snyan 84132611Snjl { 0, 0 }, 85132501Snyan}; 86132611Snjl 87132501Snyanstatic driver_t ps3pic_driver = { 88132611Snjl "ps3pic", 89132501Snyan ps3pic_methods, 90132611Snjl sizeof(struct ps3pic_softc) 91132501Snyan}; 92132611Snjl 93137365Snjlstatic devclass_t ps3pic_devclass; 94132501Snyan 95132611SnjlDRIVER_MODULE(ps3pic, nexus, ps3pic_driver, ps3pic_devclass, 0, 0); 96137365Snjl 97132611Snjlstatic MALLOC_DEFINE(M_PS3PIC, "ps3pic", "PS3 PIC"); 98132611Snjl 99133629Snjlstatic void 100132611Snjlps3pic_identify(driver_t *driver, device_t parent) 101132501Snyan{ 102132501Snyan if (strcmp(installed_platform(), "ps3") != 0) 103132501Snyan return; 104132501Snyan 105132501Snyan if (device_find_child(parent, "ps3pic", -1) == NULL) 106132501Snyan BUS_ADD_CHILD(parent, 0, "ps3pic", 0); 107132501Snyan} 108137365Snjl 109132501Snyanstatic int 110132501Snyanps3pic_probe(device_t dev) 111132501Snyan{ 112132501Snyan device_set_desc(dev, "Playstation 3 interrupt controller"); 113132501Snyan return (BUS_PROBE_NOWILDCARD); 114132501Snyan} 115132501Snyan 116132501Snyanstatic int 117132501Snyanps3pic_attach(device_t dev) 118170213Snjl{ 119132501Snyan struct ps3pic_softc *sc; 120132501Snyan uint64_t ppe; 121132501Snyan int thread; 122132501Snyan 123132501Snyan sc = device_get_softc(dev); 124132501Snyan 125132501Snyan sc->bitmap_thread0 = contigmalloc(128 /* 512 bits * 2 */, M_PS3PIC, 126132501Snyan M_NOWAIT | M_ZERO, 0, BUS_SPACE_MAXADDR, 64 /* alignment */, 127132501Snyan PAGE_SIZE /* boundary */); 128132501Snyan sc->mask_thread0 = sc->bitmap_thread0 + 4; 129132501Snyan sc->bitmap_thread1 = sc->bitmap_thread0 + 8; 130132501Snyan sc->mask_thread1 = sc->bitmap_thread0 + 12; 131132501Snyan 132132611Snjl lv1_get_logical_ppe_id(&ppe); 133132501Snyan thread = 32 - fls(mfctrl()); 134132501Snyan lv1_configure_irq_state_bitmap(ppe, thread, 135132501Snyan vtophys(sc->bitmap_thread0)); 136132501Snyan#ifdef SMP 137132501Snyan lv1_configure_irq_state_bitmap(ppe, !thread, 138132501Snyan vtophys(sc->bitmap_thread1)); 139132501Snyan 140132501Snyan /* Map both IPIs to the same VIRQ to avoid changes in intr_machdep */ 141132501Snyan lv1_construct_event_receive_port(&sc->sc_ipi_outlet[0]); 142132501Snyan lv1_connect_irq_plug_ext(ppe, thread, sc->sc_ipi_outlet[0], 143132501Snyan sc->sc_ipi_outlet[0], 0); 144132501Snyan lv1_construct_event_receive_port(&sc->sc_ipi_outlet[1]); 145132501Snyan lv1_connect_irq_plug_ext(ppe, !thread, sc->sc_ipi_outlet[0], 146132501Snyan sc->sc_ipi_outlet[1], 0); 147132501Snyan#endif 148132501Snyan 149132501Snyan powerpc_register_pic(dev, sc->sc_ipi_outlet[0]); 150132501Snyan root_pic = dev; /* PS3s have only one PIC */ 151132501Snyan 152132501Snyan return (0); 153132501Snyan} 154132501Snyan 155132501Snyan/* 156132501Snyan * PIC I/F methods. 157132501Snyan */ 158132501Snyan 159132501Snyanstatic void 160132501Snyanps3pic_dispatch(device_t dev, struct trapframe *tf) 161132501Snyan{ 162132501Snyan uint64_t bitmap, mask; 163132501Snyan int irq; 164132501Snyan struct ps3pic_softc *sc; 165132501Snyan 166132501Snyan sc = device_get_softc(dev); 167132501Snyan 168132501Snyan if (PCPU_GET(cpuid) == 0) { 169132501Snyan bitmap = sc->bitmap_thread0[0]; 170132611Snjl mask = sc->mask_thread0[0]; 171132611Snjl } else { 172132611Snjl bitmap = sc->bitmap_thread1[0]; 173132611Snjl mask = sc->mask_thread1[0]; 174132501Snyan } 175132501Snyan 176132501Snyan while ((irq = ffsl(bitmap & mask) - 1) != -1) { 177132501Snyan bitmap &= ~(1UL << irq); 178132501Snyan powerpc_dispatch_intr(sc->sc_vector[63 - irq], tf); 179132501Snyan } 180132501Snyan} 181132501Snyan 182132501Snyanstatic void 183132501Snyanps3pic_enable(device_t dev, u_int irq, u_int vector) 184132501Snyan{ 185132501Snyan struct ps3pic_softc *sc; 186170213Snjl 187132501Snyan sc = device_get_softc(dev); 188132611Snjl sc->sc_vector[irq] = vector; 189132501Snyan 190132501Snyan ps3pic_unmask(dev, irq); 191132611Snjl} 192132501Snyan 193132501Snyanstatic void 194132501Snyanps3pic_eoi(device_t dev, u_int irq) 195132501Snyan{ 196137365Snjl uint64_t ppe; 197137365Snjl int thread; 198137365Snjl 199137365Snjl lv1_get_logical_ppe_id(&ppe); 200132501Snyan thread = 32 - fls(mfctrl()); 201132501Snyan 202132501Snyan lv1_end_of_interrupt_ext(ppe, thread, irq); 203132501Snyan} 204132501Snyan 205132501Snyanstatic void 206132501Snyanps3pic_ipi(device_t dev, u_int cpu) 207132501Snyan{ 208132501Snyan struct ps3pic_softc *sc; 209132501Snyan sc = device_get_softc(dev); 210137365Snjl 211137365Snjl lv1_send_event_locally(sc->sc_ipi_outlet[cpu]); 212137365Snjl} 213132501Snyan 214132501Snyanstatic void 215132611Snjlps3pic_mask(device_t dev, u_int irq) 216132501Snyan{ 217132501Snyan struct ps3pic_softc *sc; 218132501Snyan uint64_t ppe; 219132501Snyan 220132501Snyan sc = device_get_softc(dev); 221132501Snyan 222132501Snyan /* Do not mask IPIs! */ 223188162Simp if (irq == sc->sc_ipi_outlet[0]) 224170213Snjl return; 225170213Snjl 226170213Snjl sc->mask_thread0[0] &= ~(1UL << (63 - irq)); 227170213Snjl sc->mask_thread1[0] &= ~(1UL << (63 - irq)); 228170213Snjl 229170213Snjl lv1_get_logical_ppe_id(&ppe); 230170213Snjl lv1_did_update_interrupt_mask(ppe, 0); 231170213Snjl lv1_did_update_interrupt_mask(ppe, 1); 232170213Snjl} 233188162Simp 234170213Snjlstatic void 235170213Snjlps3pic_unmask(device_t dev, u_int irq) 236132501Snyan{ 237132501Snyan struct ps3pic_softc *sc; 238132501Snyan uint64_t ppe; 239132501Snyan 240132501Snyan sc = device_get_softc(dev); 241132501Snyan sc->mask_thread0[0] |= (1UL << (63 - irq)); 242132501Snyan sc->mask_thread1[0] |= (1UL << (63 - irq)); 243132501Snyan 244132501Snyan lv1_get_logical_ppe_id(&ppe); 245132501Snyan lv1_did_update_interrupt_mask(ppe, 0); 246132501Snyan lv1_did_update_interrupt_mask(ppe, 1); 247132501Snyan} 248170213Snjl 249133629Snjlstatic uint32_t 250132501Snyanps3pic_id(device_t dev) 251132501Snyan{ 252133629Snjl return (0); 253132501Snyan} 254132501Snyan 255132501Snyan