/* * Apple SMC controller * * Copyright (c) 2007 Alexander Graf * * Authors: Alexander Graf <agraf@suse.de> * Susanne Graf <suse@csgraf.de> * * 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 <http://www.gnu.org/licenses/>. * * ***************************************************************** * * 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.h" #include "isa.h" #include "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; }; struct AppleSMCStatus { ISADevice dev; 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_writeb(void *opaque, uint32_t addr, uint32_t val) { struct AppleSMCStatus *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(struct AppleSMCStatus *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_writeb(void *opaque, uint32_t addr, uint32_t val) { struct AppleSMCStatus *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 uint32_t applesmc_io_data_readb(void *opaque, uint32_t addr1) { struct AppleSMCStatus *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 uint32_t applesmc_io_cmd_readb(void *opaque, uint32_t addr1) { struct AppleSMCStatus *s = opaque; smc_debug("CMD Read B: %#x\n", addr1); return s->status; } static void applesmc_add_key(struct AppleSMCStatus *s, const char *key, int len, const char *data) { struct AppleSMCData *def; def = qemu_mallocz(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) { struct AppleSMCStatus *s = DO_UPCAST(struct AppleSMCStatus, dev.qdev, 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 int applesmc_isa_init(ISADevice *dev) { struct AppleSMCStatus *s = DO_UPCAST(struct AppleSMCStatus, dev, dev); register_ioport_read(s->iobase + APPLESMC_DATA_PORT, 4, 1, applesmc_io_data_readb, s); register_ioport_read(s->iobase + APPLESMC_CMD_PORT, 4, 1, applesmc_io_cmd_readb, s); register_ioport_write(s->iobase + APPLESMC_DATA_PORT, 4, 1, applesmc_io_data_writeb, s); register_ioport_write(s->iobase + APPLESMC_CMD_PORT, 4, 1, applesmc_io_cmd_writeb, s); 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->qdev); return 0; } static ISADeviceInfo applesmc_isa_info = { .qdev.name = "isa-applesmc", .qdev.size = sizeof(struct AppleSMCStatus), .qdev.reset = qdev_applesmc_isa_reset, .init = applesmc_isa_init, .qdev.props = (Property[]) { DEFINE_PROP_HEX32("iobase", struct AppleSMCStatus, iobase, APPLESMC_DEFAULT_IOBASE), DEFINE_PROP_STRING("osk", struct AppleSMCStatus, osk), DEFINE_PROP_END_OF_LIST(), }, }; static void applesmc_register_devices(void) { isa_qdev_register(&applesmc_isa_info); } device_init(applesmc_register_devices)