/* * Apple SMC controller * * Copyright (c) 2007 Alexander Graf * * Authors: Alexander Graf * Susanne Graf * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see . * * ***************************************************************** * * In all Intel-based Apple hardware there is an SMC chip to control the * backlight, fans and several other generic device parameters. It also * contains the magic keys used to dongle Mac OS X to the device. * * This driver was mostly created by looking at the Linux AppleSMC driver * implementation and does not support IRQ. * */ #include "hw/hw.h" #include "hw/isa/isa.h" #include "ui/console.h" #include "qemu/timer.h" /* #define DEBUG_SMC */ #define APPLESMC_DEFAULT_IOBASE 0x300 /* data port used by Apple SMC */ #define APPLESMC_DATA_PORT 0x0 /* command/status port used by Apple SMC */ #define APPLESMC_CMD_PORT 0x4 #define APPLESMC_NR_PORTS 32 #define APPLESMC_MAX_DATA_LENGTH 32 #define APPLESMC_READ_CMD 0x10 #define APPLESMC_WRITE_CMD 0x11 #define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12 #define APPLESMC_GET_KEY_TYPE_CMD 0x13 #ifdef DEBUG_SMC #define smc_debug(...) fprintf(stderr, "AppleSMC: " __VA_ARGS__) #else #define smc_debug(...) do { } while(0) #endif static char default_osk[64] = "This is a dummy key. Enter the real key " "using the -osk parameter"; struct AppleSMCData { uint8_t len; const char *key; const char *data; QLIST_ENTRY(AppleSMCData) node; }; #define APPLE_SMC(obj) OBJECT_CHECK(AppleSMCState, (obj), TYPE_APPLE_SMC) typedef struct AppleSMCState AppleSMCState; struct AppleSMCState { ISADevice parent_obj; MemoryRegion io_data; MemoryRegion io_cmd; uint32_t iobase; uint8_t cmd; uint8_t status; uint8_t key[4]; uint8_t read_pos; uint8_t data_len; uint8_t data_pos; uint8_t data[255]; uint8_t charactic[4]; char *osk; QLIST_HEAD(, AppleSMCData) data_def; }; static void applesmc_io_cmd_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { AppleSMCState *s = opaque; smc_debug("CMD Write B: %#x = %#x\n", addr, val); switch(val) { case APPLESMC_READ_CMD: s->status = 0x0c; break; } s->cmd = val; s->read_pos = 0; s->data_pos = 0; } static void applesmc_fill_data(AppleSMCState *s) { struct AppleSMCData *d; QLIST_FOREACH(d, &s->data_def, node) { if (!memcmp(d->key, s->key, 4)) { smc_debug("Key matched (%s Len=%d Data=%s)\n", d->key, d->len, d->data); memcpy(s->data, d->data, d->len); return; } } } static void applesmc_io_data_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) { AppleSMCState *s = opaque; smc_debug("DATA Write B: %#x = %#x\n", addr, val); switch(s->cmd) { case APPLESMC_READ_CMD: if(s->read_pos < 4) { s->key[s->read_pos] = val; s->status = 0x04; } else if(s->read_pos == 4) { s->data_len = val; s->status = 0x05; s->data_pos = 0; smc_debug("Key = %c%c%c%c Len = %d\n", s->key[0], s->key[1], s->key[2], s->key[3], val); applesmc_fill_data(s); } s->read_pos++; break; } } static uint64_t applesmc_io_data_read(void *opaque, hwaddr addr1, unsigned size) { AppleSMCState *s = opaque; uint8_t retval = 0; switch(s->cmd) { case APPLESMC_READ_CMD: if(s->data_pos < s->data_len) { retval = s->data[s->data_pos]; smc_debug("READ_DATA[%d] = %#hhx\n", s->data_pos, retval); s->data_pos++; if(s->data_pos == s->data_len) { s->status = 0x00; smc_debug("EOF\n"); } else s->status = 0x05; } } smc_debug("DATA Read b: %#x = %#x\n", addr1, retval); return retval; } static uint64_t applesmc_io_cmd_read(void *opaque, hwaddr addr1, unsigned size) { AppleSMCState *s = opaque; smc_debug("CMD Read B: %#x\n", addr1); return s->status; } static void applesmc_add_key(AppleSMCState *s, const char *key, int len, const char *data) { struct AppleSMCData *def; def = g_malloc0(sizeof(struct AppleSMCData)); def->key = key; def->len = len; def->data = data; QLIST_INSERT_HEAD(&s->data_def, def, node); } static void qdev_applesmc_isa_reset(DeviceState *dev) { AppleSMCState *s = APPLE_SMC(dev); struct AppleSMCData *d, *next; /* Remove existing entries */ QLIST_FOREACH_SAFE(d, &s->data_def, node, next) { QLIST_REMOVE(d, node); } applesmc_add_key(s, "REV ", 6, "\x01\x13\x0f\x00\x00\x03"); applesmc_add_key(s, "OSK0", 32, s->osk); applesmc_add_key(s, "OSK1", 32, s->osk + 32); applesmc_add_key(s, "NATJ", 1, "\0"); applesmc_add_key(s, "MSSP", 1, "\0"); applesmc_add_key(s, "MSSD", 1, "\0x3"); } static const MemoryRegionOps applesmc_data_io_ops = { .write = applesmc_io_data_write, .read = applesmc_io_data_read, .endianness = DEVICE_NATIVE_ENDIAN, .impl = { .min_access_size = 1, .max_access_size = 1, }, }; static const MemoryRegionOps applesmc_cmd_io_ops = { .write = applesmc_io_cmd_write, .read = applesmc_io_cmd_read, .endianness = DEVICE_NATIVE_ENDIAN, .impl = { .min_access_size = 1, .max_access_size = 1, }, }; static void applesmc_isa_realize(DeviceState *dev, Error **errp) { AppleSMCState *s = APPLE_SMC(dev); memory_region_init_io(&s->io_data, OBJECT(s), &applesmc_data_io_ops, s, "applesmc-data", 4); isa_register_ioport(&s->parent_obj, &s->io_data, s->iobase + APPLESMC_DATA_PORT); memory_region_init_io(&s->io_cmd, OBJECT(s), &applesmc_cmd_io_ops, s, "applesmc-cmd", 4); isa_register_ioport(&s->parent_obj, &s->io_cmd, s->iobase + APPLESMC_CMD_PORT); if (!s->osk || (strlen(s->osk) != 64)) { fprintf(stderr, "WARNING: Using AppleSMC with invalid key\n"); s->osk = default_osk; } QLIST_INIT(&s->data_def); qdev_applesmc_isa_reset(dev); } static Property applesmc_isa_properties[] = { DEFINE_PROP_UINT32("iobase", AppleSMCState, iobase, APPLESMC_DEFAULT_IOBASE), DEFINE_PROP_STRING("osk", AppleSMCState, osk), DEFINE_PROP_END_OF_LIST(), }; static void qdev_applesmc_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); dc->realize = applesmc_isa_realize; dc->reset = qdev_applesmc_isa_reset; dc->props = applesmc_isa_properties; set_bit(DEVICE_CATEGORY_MISC, dc->categories); } static const TypeInfo applesmc_isa_info = { .name = TYPE_APPLE_SMC, .parent = TYPE_ISA_DEVICE, .instance_size = sizeof(AppleSMCState), .class_init = qdev_applesmc_class_init, }; static void applesmc_register_types(void) { type_register_static(&applesmc_isa_info); } type_init(applesmc_register_types)