///////////////////////////////////////////////////////////////////////// // $Id: devices.cc,v 1.101 2006-05-27 15:54:48 sshwarts Exp $ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2002 MandrakeSoft S.A. // // MandrakeSoft S.A. // 43, rue d'Aboukir // 75002 Paris - France // http://www.linux-mandrake.com/ // http://www.mandrakesoft.com/ // // I/O port handlers API Copyright (C) 2003 by Frank Cornelis // // 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, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #include "bochs.h" #include "iodev.h" #define LOG_THIS bx_devices. /* main memory size (in Kbytes) * subtract 1k for extended BIOS area * report only base memory, not extended mem */ #define BASE_MEMORY_IN_K 640 bx_devices_c bx_devices; // constructor for bx_devices_c bx_devices_c::bx_devices_c() { put("DEV"); settype(DEVLOG); read_port_to_handler = NULL; write_port_to_handler = NULL; #if BX_SUPPORT_PCI pluginPciBridge = &stubPci; pluginPci2IsaBridge = &stubPci2Isa; pluginPciIdeController = &stubPciIde; #if BX_SUPPORT_PCIVGA pluginPciVgaAdapter = NULL; #endif #if BX_SUPPORT_PCIDEV pluginPciDevAdapter = NULL; #endif #if BX_SUPPORT_PCIUSB pluginPciUSBAdapter = &stubUsbAdapter; #endif #if BX_SUPPORT_PCIPNIC pluginPciPNicAdapter = NULL; #endif #endif pit = NULL; pluginKeyboard = &stubKeyboard; pluginDmaDevice = &stubDma; pluginFloppyDevice = &stubFloppy; pluginBiosDevice = NULL; pluginCmosDevice = &stubCmos; pluginSerialDevice = &stubSerial; pluginParallelDevice = NULL; pluginUnmapped = NULL; pluginVgaDevice = &stubVga; pluginPicDevice = &stubPic; pluginHardDrive = &stubHardDrive; pluginSB16Device = NULL; pluginNE2kDevice =&stubNE2k; pluginExtFpuIrq = NULL; pluginGameport = NULL; pluginSpeaker = &stubSpeaker; #if BX_SUPPORT_BUSMOUSE pluginBusMouse = &stubBusMouse; #endif #if BX_SUPPORT_IODEBUG iodebug = NULL; #endif #if 0 g2h = NULL; #endif } bx_devices_c::~bx_devices_c() { // nothing needed for now timer_handle = BX_NULL_TIMER_HANDLE; } void bx_devices_c::init(BX_MEM_C *newmem) { unsigned i; BX_DEBUG(("Init $Id: devices.cc,v 1.101 2006-05-27 15:54:48 sshwarts Exp $")); mem = newmem; /* set no-default handlers, will be overwritten by the real default handler */ io_read_handlers.next = &io_read_handlers; io_read_handlers.prev = &io_read_handlers; io_read_handlers.handler_name = "Default"; io_read_handlers.funct = (void *)&default_read_handler; io_read_handlers.this_ptr = NULL; io_read_handlers.usage_count = 0; // not used with the default handler io_read_handlers.mask = 7; io_write_handlers.next = &io_write_handlers; io_write_handlers.prev = &io_write_handlers; io_write_handlers.handler_name = "Default"; io_write_handlers.funct = (void *)&default_write_handler; io_write_handlers.this_ptr = NULL; io_write_handlers.usage_count = 0; // not used with the default handler io_write_handlers.mask = 7; if (read_port_to_handler) delete [] read_port_to_handler; if (write_port_to_handler) delete [] write_port_to_handler; read_port_to_handler = new struct io_handler_struct *[PORTS]; write_port_to_handler = new struct io_handler_struct *[PORTS]; /* set handlers to the default one */ for (i=0; i < PORTS; i++) { read_port_to_handler[i] = &io_read_handlers; write_port_to_handler[i] = &io_write_handlers; } for (i=0; i < BX_MAX_IRQS; i++) { irq_handler_name[i] = NULL; } // register as soon as possible - the devices want to have their timers ! bx_virt_timer.init(); bx_slowdown_timer.init(); // BBD: At present, the only difference between "core" and "optional" // plugins is that initialization and reset of optional plugins is handled // by the plugin device list (). Init and reset of core plugins is done // "by hand" in this file. Basically, we're using core plugins when we // want to control the init order. // // CB: UNMAPPED and BIOSDEV should maybe be optional PLUG_load_plugin(unmapped, PLUGTYPE_CORE); PLUG_load_plugin(biosdev, PLUGTYPE_CORE); PLUG_load_plugin(cmos, PLUGTYPE_CORE); PLUG_load_plugin(dma, PLUGTYPE_CORE); PLUG_load_plugin(pic, PLUGTYPE_CORE); PLUG_load_plugin(vga, PLUGTYPE_CORE); PLUG_load_plugin(floppy, PLUGTYPE_CORE); PLUG_load_plugin(harddrv, PLUGTYPE_OPTIONAL); PLUG_load_plugin(keyboard, PLUGTYPE_OPTIONAL); #if BX_SUPPORT_BUSMOUSE if (SIM->get_param_enum(BXPN_MOUSE_TYPE)->get() == BX_MOUSE_TYPE_BUS) { PLUG_load_plugin(busmouse, PLUGTYPE_OPTIONAL); } #endif if (is_serial_enabled()) PLUG_load_plugin(serial, PLUGTYPE_OPTIONAL); if (is_parallel_enabled()) PLUG_load_plugin(parallel, PLUGTYPE_OPTIONAL); PLUG_load_plugin(extfpuirq, PLUGTYPE_OPTIONAL); #if BX_SUPPORT_GAMEPORT PLUG_load_plugin(gameport, PLUGTYPE_OPTIONAL); #endif PLUG_load_plugin(speaker, PLUGTYPE_OPTIONAL); // Start with registering the default (unmapped) handler pluginUnmapped->init (); // PCI logic (i440FX) if (SIM->get_param_bool(BXPN_I440FX_SUPPORT)->get()) { #if BX_SUPPORT_PCI PLUG_load_plugin(pci, PLUGTYPE_CORE); PLUG_load_plugin(pci2isa, PLUGTYPE_CORE); PLUG_load_plugin(pci_ide, PLUGTYPE_OPTIONAL); #if BX_SUPPORT_PCIVGA if ((DEV_is_pci_device("pcivga")) && (!strcmp(SIM->get_param_string(BXPN_VGA_EXTENSION)->getptr(), "vbe"))) { PLUG_load_plugin(pcivga, PLUGTYPE_OPTIONAL); } #endif #if BX_SUPPORT_PCIUSB if (is_usb_enabled()) { PLUG_load_plugin(pciusb, PLUGTYPE_OPTIONAL); } #endif #if BX_SUPPORT_PCIDEV if (SIM->get_param_num(BXPN_PCIDEV_VENDOR)->get() != 0xffff) { PLUG_load_plugin(pcidev, PLUGTYPE_OPTIONAL); } #endif #if BX_SUPPORT_PCIPNIC if (SIM->get_param_bool(BXPN_PNIC_ENABLED)->get()) { PLUG_load_plugin(pcipnic, PLUGTYPE_OPTIONAL); } #endif #else BX_ERROR(("Bochs is not compiled with PCI support")); #endif } // NE2000 NIC if (SIM->get_param_bool(BXPN_NE2K_ENABLED)->get()) { #if BX_SUPPORT_NE2K PLUG_load_plugin(ne2k, PLUGTYPE_OPTIONAL); #else BX_ERROR(("Bochs is not compiled with NE2K support")); #endif } #if BX_SUPPORT_APIC // I/O APIC 82093AA ioapic = & bx_ioapic; ioapic->init (); #endif // BIOS log pluginBiosDevice->init (); // CMOS RAM & RTC pluginCmosDevice->init (); /*--- 8237 DMA ---*/ pluginDmaDevice->init(); //--- FLOPPY --- pluginFloppyDevice->init(); //--- SOUND --- if (SIM->get_param_bool(BXPN_SB16_ENABLED)->get()) { #if BX_SUPPORT_SB16 PLUG_load_plugin(sb16, PLUGTYPE_OPTIONAL); #else BX_ERROR(("Bochs is not compiled with SB16 support")); #endif } #if BX_SUPPORT_PCI pluginPciBridge->init (); pluginPci2IsaBridge->init (); #endif /*--- VGA adapter ---*/ pluginVgaDevice->init (); /*--- 8259A PIC ---*/ pluginPicDevice->init(); /*--- 8254 PIT ---*/ pit = & bx_pit; pit->init(); #if BX_SUPPORT_IODEBUG iodebug = &bx_iodebug; iodebug->init(); #endif #if 0 // Guest to Host interface. Used with special guest drivers // which move data to/from the host environment. g2h = &bx_g2h; g2h->init(); #endif // system hardware register_io_read_handler(this, &read_handler, 0x0092, "Port 92h System Control", 1); register_io_write_handler(this, &write_handler, 0x0092, "Port 92h System Control", 1); // misc. CMOS Bit32u extended_memory_in_k = mem->get_memory_in_k() > 1024 ? (mem->get_memory_in_k() - 1024) : 0; if (extended_memory_in_k > 0xfc00) extended_memory_in_k = 0xfc00; DEV_cmos_set_reg(0x15, (Bit8u) BASE_MEMORY_IN_K); DEV_cmos_set_reg(0x16, (Bit8u) (BASE_MEMORY_IN_K >> 8)); DEV_cmos_set_reg(0x17, (Bit8u) (extended_memory_in_k & 0xff) ); DEV_cmos_set_reg(0x18, (Bit8u) ((extended_memory_in_k >> 8) & 0xff) ); DEV_cmos_set_reg(0x30, (Bit8u) (extended_memory_in_k & 0xff) ); DEV_cmos_set_reg(0x31, (Bit8u) ((extended_memory_in_k >> 8) & 0xff) ); Bit32u extended_memory_in_64k = mem->get_memory_in_k() > 16384 ? (mem->get_memory_in_k() - 16384) / 64 : 0; if (extended_memory_in_64k > 0xffff) extended_memory_in_64k = 0xffff; DEV_cmos_set_reg(0x34, (Bit8u) (extended_memory_in_64k & 0xff) ); DEV_cmos_set_reg(0x35, (Bit8u) ((extended_memory_in_64k >> 8) & 0xff) ); if (timer_handle != BX_NULL_TIMER_HANDLE) { timer_handle = bx_pc_system.register_timer(this, timer_handler, (unsigned) BX_IODEV_HANDLER_PERIOD, 1, 1, "devices.cc"); } // Clear fields for bulk IO acceleration transfers. bulkIOHostAddr = 0; bulkIOQuantumsRequested = 0; bulkIOQuantumsTransferred = 0; bx_init_plugins(); /* now perform checksum of CMOS memory */ DEV_cmos_checksum(); } void bx_devices_c::reset(unsigned type) { mem->disable_smram(); pluginUnmapped->reset(type); #if BX_SUPPORT_PCI if (SIM->get_param_bool(BXPN_I440FX_SUPPORT)->get()) { pluginPciBridge->reset(type); pluginPci2IsaBridge->reset(type); } #endif #if BX_SUPPORT_APIC ioapic->reset(type); #endif pluginBiosDevice->reset(type); pluginCmosDevice->reset(type); pluginDmaDevice->reset(type); pluginFloppyDevice->reset(type); pluginVgaDevice->reset(type); pluginPicDevice->reset(type); pit->reset(type); #if BX_SUPPORT_IODEBUG iodebug->reset(type); #endif // now reset optional plugins bx_reset_plugins(type); } #if BX_SUPPORT_SAVE_RESTORE void bx_devices_c::register_state() { bx_virt_timer.register_state(); #if BX_SUPPORT_PCI if (SIM->get_param_bool(BXPN_I440FX_SUPPORT)->get()) { pluginPciBridge->register_state(); pluginPci2IsaBridge->register_state(); } #endif #if BX_SUPPORT_APIC ioapic->register_state(); #endif pluginCmosDevice->register_state(); pluginDmaDevice->register_state(); pluginFloppyDevice->register_state(); pluginVgaDevice->register_state(); pluginPicDevice->register_state(); pit->register_state(); // now register state of optional plugins bx_plugins_register_state(); } void bx_devices_c::after_restore_state() { bx_slowdown_timer.after_restore_state(); #if BX_SUPPORT_PCI if (SIM->get_param_bool(BXPN_I440FX_SUPPORT)->get()) { pluginPciBridge->after_restore_state(); pluginPci2IsaBridge->after_restore_state(); } #endif pluginCmosDevice->after_restore_state(); pluginVgaDevice->after_restore_state(); bx_plugins_after_restore_state(); } #endif Bit32u bx_devices_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len) { #if !BX_USE_DEV_SMF bx_devices_c *class_ptr = (bx_devices_c *) this_ptr; return class_ptr->port92_read(address, io_len); } Bit32u bx_devices_c::port92_read(Bit32u address, unsigned io_len) { #else UNUSED(this_ptr); #endif // !BX_USE_DEV_SMF BX_DEBUG(("port92h read partially supported!!!")); BX_DEBUG((" returning %02x", (unsigned) (BX_GET_ENABLE_A20() << 1))); return(BX_GET_ENABLE_A20() << 1); } void bx_devices_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len) { #if !BX_USE_DEV_SMF bx_devices_c *class_ptr = (bx_devices_c *) this_ptr; class_ptr->port92_write(address, value, io_len); } void bx_devices_c::port92_write(Bit32u address, Bit32u value, unsigned io_len) { #else UNUSED(this_ptr); #endif // !BX_USE_DEV_SMF BX_DEBUG(("port92h write of %02x partially supported!!!", (unsigned) value)); BX_DEBUG(("A20: set_enable_a20() called")); BX_SET_ENABLE_A20( (value & 0x02) >> 1 ); BX_DEBUG(("A20: now %u", (unsigned) BX_GET_ENABLE_A20())); if (value & 0x01) { /* high speed reset */ BX_INFO(("iowrite to port0x92 : reset resquested")); bx_pc_system.Reset(BX_RESET_SOFTWARE); } } // This defines a no-default read handler, // so Bochs does not segfault if unmapped is not loaded Bit32u bx_devices_c::default_read_handler(void *this_ptr, Bit32u address, unsigned io_len) { UNUSED(this_ptr); BX_PANIC(("No default io-read handler found for 0x%04x/%d. Unmapped io-device not loaded ?", address, io_len)); return 0xffffffff; } // This defines a no-default write handler, // so Bochs does not segfault if unmapped is not loaded void bx_devices_c::default_write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len) { UNUSED(this_ptr); BX_PANIC(("No default io-write handler found for 0x%04x/%d. Unmapped io-device not loaded ?", address, io_len)); } void bx_devices_c::timer_handler(void *this_ptr) { bx_devices_c *class_ptr = (bx_devices_c *) this_ptr; class_ptr->timer(); } void bx_devices_c::timer() { #if (BX_USE_NEW_PIT==0) if (pit->periodic(BX_IODEV_HANDLER_PERIOD)) { // This is a hack to make the IRQ0 work DEV_pic_lower_irq(0); DEV_pic_raise_irq(0); } #endif // separate calls to bx_gui->handle_events from the keyboard code. { static int multiple=0; if ( ++multiple==10) { multiple=0; SIM->periodic(); if (! bx_pc_system.kill_bochs_request) bx_gui->handle_events(); } } } bx_bool bx_devices_c::register_irq(unsigned irq, const char *name) { if (irq >= BX_MAX_IRQS) { BX_PANIC(("IO device %s registered with IRQ=%d above %u", name, irq, (unsigned) BX_MAX_IRQS-1)); return false; } if (irq_handler_name[irq]) { BX_PANIC(("IRQ %u conflict, %s with %s", irq, irq_handler_name[irq], name)); return false; } irq_handler_name[irq] = name; return true; } bx_bool bx_devices_c::unregister_irq(unsigned irq, const char *name) { if (irq >= BX_MAX_IRQS) { BX_PANIC(("IO device %s tried to unregister IRQ %d above %u", name, irq, (unsigned) BX_MAX_IRQS-1)); return false; } if (!irq_handler_name[irq]) { BX_INFO(("IO device %s tried to unregister IRQ %d, not registered", name, irq)); return false; } if (strcmp(irq_handler_name[irq], name)) { BX_INFO(("IRQ %u not registered to %s but to %s", irq, name, irq_handler_name[irq])); return false; } irq_handler_name[irq] = NULL; return true; } bx_bool bx_devices_c::register_io_read_handler(void *this_ptr, bx_read_handler_t f, Bit32u addr, const char *name, Bit8u mask) { addr &= 0x0000ffff; if (!f) return false; /* first check if the port already has a handlers != the default handler */ if (read_port_to_handler[addr] && read_port_to_handler[addr] != &io_read_handlers) { // the default BX_ERROR(("IO device address conflict(read) at IO address %Xh", (unsigned) addr)); BX_ERROR((" conflicting devices: %s & %s", read_port_to_handler[addr]->handler_name, name)); return false; } /* first find existing handle for function or create new one */ struct io_handler_struct *curr = &io_read_handlers; struct io_handler_struct *io_read_handler = NULL; do { if (curr->funct == f && curr->mask == mask && curr->this_ptr == this_ptr && curr->handler_name == name) { // really want the same name too io_read_handler = curr; break; } curr = curr->next; } while (curr->next != &io_read_handlers); if (!io_read_handler) { io_read_handler = new struct io_handler_struct; io_read_handler->funct = (void *)f; io_read_handler->this_ptr = this_ptr; io_read_handler->handler_name = name; io_read_handler->mask = mask; io_read_handler->usage_count = 0; // add the handler to the double linked list of handlers io_read_handlers.prev->next = io_read_handler; io_read_handler->next = &io_read_handlers; io_read_handler->prev = io_read_handlers.prev; io_read_handlers.prev = io_read_handler; } io_read_handler->usage_count++; read_port_to_handler[addr] = io_read_handler; return true; // address mapped successfully } bx_bool bx_devices_c::register_io_write_handler(void *this_ptr, bx_write_handler_t f, Bit32u addr, const char *name, Bit8u mask) { addr &= 0x0000ffff; if (!f) return false; /* first check if the port already has a handlers != the default handler */ if (write_port_to_handler[addr] && write_port_to_handler[addr] != &io_write_handlers) { // the default BX_ERROR(("IO device address conflict(write) at IO address %Xh", (unsigned) addr)); BX_ERROR((" conflicting devices: %s & %s", write_port_to_handler[addr]->handler_name, name)); return false; } /* first find existing handle for function or create new one */ struct io_handler_struct *curr = &io_write_handlers; struct io_handler_struct *io_write_handler = NULL; do { if (curr->funct == f && curr->mask == mask && curr->this_ptr == this_ptr && curr->handler_name == name) { // really want the same name too io_write_handler = curr; break; } curr = curr->next; } while (curr->next != &io_write_handlers); if (!io_write_handler) { io_write_handler = new struct io_handler_struct; io_write_handler->funct = (void *)f; io_write_handler->this_ptr = this_ptr; io_write_handler->handler_name = name; io_write_handler->mask = mask; io_write_handler->usage_count = 0; // add the handler to the double linked list of handlers io_write_handlers.prev->next = io_write_handler; io_write_handler->next = &io_write_handlers; io_write_handler->prev = io_write_handlers.prev; io_write_handlers.prev = io_write_handler; } io_write_handler->usage_count++; write_port_to_handler[addr] = io_write_handler; return true; // address mapped successfully } bx_bool bx_devices_c::register_io_read_handler_range(void *this_ptr, bx_read_handler_t f, Bit32u begin_addr, Bit32u end_addr, const char *name, Bit8u mask) { Bit32u addr; begin_addr &= 0x0000ffff; end_addr &= 0x0000ffff; if (end_addr < begin_addr) { BX_ERROR(("!!! end_addr < begin_addr !!!")); return false; } if (!f) { BX_ERROR(("!!! f == NULL !!!")); return false; } /* first check if the port already has a handlers != the default handler */ for (addr = begin_addr; addr <= end_addr; addr++) if (read_port_to_handler[addr] && read_port_to_handler[addr] != &io_read_handlers) { // the default BX_ERROR(("IO device address conflict(read) at IO address %Xh", (unsigned) addr)); BX_ERROR((" conflicting devices: %s & %s", read_port_to_handler[addr]->handler_name, name)); return false; } /* first find existing handle for function or create new one */ struct io_handler_struct *curr = &io_read_handlers; struct io_handler_struct *io_read_handler = NULL; do { if (curr->funct == f && curr->mask == mask && curr->this_ptr == this_ptr && curr->handler_name == name) { io_read_handler = curr; break; } curr = curr->next; } while (curr->next != &io_read_handlers); if (!io_read_handler) { io_read_handler = new struct io_handler_struct; io_read_handler->funct = (void *)f; io_read_handler->this_ptr = this_ptr; io_read_handler->handler_name = name; io_read_handler->mask = mask; io_read_handler->usage_count = 0; // add the handler to the double linked list of handlers io_read_handlers.prev->next = io_read_handler; io_read_handler->next = &io_read_handlers; io_read_handler->prev = io_read_handlers.prev; io_read_handlers.prev = io_read_handler; } io_read_handler->usage_count += end_addr - begin_addr + 1; for (addr = begin_addr; addr <= end_addr; addr++) read_port_to_handler[addr] = io_read_handler; return true; // address mapped successfully } bx_bool bx_devices_c::register_io_write_handler_range(void *this_ptr, bx_write_handler_t f, Bit32u begin_addr, Bit32u end_addr, const char *name, Bit8u mask) { Bit32u addr; begin_addr &= 0x0000ffff; end_addr &= 0x0000ffff; if (end_addr < begin_addr) { BX_ERROR(("!!! end_addr < begin_addr !!!")); return false; } if (!f) { BX_ERROR(("!!! f == NULL !!!")); return false; } /* first check if the port already has a handlers != the default handler */ for (addr = begin_addr; addr <= end_addr; addr++) if (write_port_to_handler[addr] && write_port_to_handler[addr] != &io_write_handlers) { // the default BX_ERROR(("IO device address conflict(read) at IO address %Xh", (unsigned) addr)); BX_ERROR((" conflicting devices: %s & %s", write_port_to_handler[addr]->handler_name, name)); return false; } /* first find existing handle for function or create new one */ struct io_handler_struct *curr = &io_write_handlers; struct io_handler_struct *io_write_handler = NULL; do { if (curr->funct == f && curr->mask == mask && curr->this_ptr == this_ptr && curr->handler_name == name) { io_write_handler = curr; break; } curr = curr->next; } while (curr->next != &io_write_handlers); if (!io_write_handler) { io_write_handler = new struct io_handler_struct; io_write_handler->funct = (void *)f; io_write_handler->this_ptr = this_ptr; io_write_handler->handler_name = name; io_write_handler->mask = mask; io_write_handler->usage_count = 0; // add the handler to the double linked list of handlers io_write_handlers.prev->next = io_write_handler; io_write_handler->next = &io_write_handlers; io_write_handler->prev = io_write_handlers.prev; io_write_handlers.prev = io_write_handler; } io_write_handler->usage_count += end_addr - begin_addr + 1; for (addr = begin_addr; addr <= end_addr; addr++) write_port_to_handler[addr] = io_write_handler; return true; // address mapped successfully } // Registration of default handlers (mainly be the unmapped device) bx_bool bx_devices_c::register_default_io_read_handler(void *this_ptr, bx_read_handler_t f, const char *name, Bit8u mask) { io_read_handlers.funct = (void *)f; io_read_handlers.this_ptr = this_ptr; io_read_handlers.handler_name = name; io_read_handlers.mask = mask; return true; } bx_bool bx_devices_c::register_default_io_write_handler(void *this_ptr, bx_write_handler_t f, const char *name, Bit8u mask) { io_write_handlers.funct = (void *)f; io_write_handlers.this_ptr = this_ptr; io_write_handlers.handler_name = name; io_write_handlers.mask = mask; return true; } bx_bool bx_devices_c::unregister_io_read_handler(void *this_ptr, bx_read_handler_t f, Bit32u addr, Bit8u mask) { addr &= 0x0000ffff; struct io_handler_struct *io_read_handler = read_port_to_handler[addr]; //BX_INFO(("Unregistering I/O read handler at %#x", addr)); if (!io_read_handler) { BX_ERROR((">>> NO IO_READ_HANDLER <<<")); return false; } if (io_read_handler == &io_read_handlers) { BX_ERROR((">>> CANNOT UNREGISTER THE DEFAULT IO_READ_HANDLER <<<")); return false; // cannot unregister the default handler } if (io_read_handler->funct != f) { BX_ERROR((">>> NOT THE SAME IO_READ_HANDLER FUNC <<<")); return false; } if (io_read_handler->this_ptr != this_ptr) { BX_ERROR((">>> NOT THE SAME IO_READ_HANDLER THIS_PTR <<<")); return false; } if (io_read_handler->mask != mask) { BX_ERROR((">>> NOT THE SAME IO_READ_HANDLER MASK <<<")); return false; } read_port_to_handler[addr] = &io_read_handlers; // reset to default io_read_handler->usage_count--; if (!io_read_handler->usage_count) { // kill this handler entry io_read_handler->prev->next = io_read_handler->next; io_read_handler->next->prev = io_read_handler->prev; delete io_read_handler; } return true; } bx_bool bx_devices_c::unregister_io_write_handler(void *this_ptr, bx_write_handler_t f, Bit32u addr, Bit8u mask) { addr &= 0x0000ffff; struct io_handler_struct *io_write_handler = write_port_to_handler[addr]; if (!io_write_handler) return false; if (io_write_handler == &io_write_handlers) return false; // cannot unregister the default handler if (io_write_handler->funct != f) return false; if (io_write_handler->this_ptr != this_ptr) return false; if (io_write_handler->mask != mask) return false; write_port_to_handler[addr] = &io_write_handlers; // reset to default io_write_handler->usage_count--; if (!io_write_handler->usage_count) { // kill this handler entry io_write_handler->prev->next = io_write_handler->next; io_write_handler->next->prev = io_write_handler->prev; delete io_write_handler; } return true; } bx_bool bx_devices_c::unregister_io_read_handler_range(void *this_ptr, bx_read_handler_t f, Bit32u begin, Bit32u end, Bit8u mask) { begin &= 0x0000ffff; end &= 0x0000ffff; Bit32u addr; bx_bool ret = true; /* * the easy way this time */ for (addr = begin; addr <= end; addr++) if (!unregister_io_read_handler(this_ptr, f, addr, mask)) ret = false; return ret; } bx_bool bx_devices_c::unregister_io_write_handler_range(void *this_ptr, bx_write_handler_t f, Bit32u begin, Bit32u end, Bit8u mask) { begin &= 0x0000ffff; end &= 0x0000ffff; Bit32u addr; bx_bool ret = true; /* * the easy way this time */ for (addr = begin; addr <= end; addr++) if (!unregister_io_write_handler(this_ptr, f, addr, mask)) ret = false; return ret; } /* * Read a byte of data from the IO memory address space */ Bit32u BX_CPP_AttrRegparmN(2) bx_devices_c::inp(Bit16u addr, unsigned io_len) { struct io_handler_struct *io_read_handler; Bit32u ret; BX_INSTR_INP(addr, io_len); io_read_handler = read_port_to_handler[addr]; if (io_read_handler->mask & io_len) { ret = ((bx_read_handler_t)io_read_handler->funct)(io_read_handler->this_ptr, (Bit32u)addr, io_len); } else { switch (io_len) { case 1: ret = 0xff; break; case 2: ret = 0xffff; break; default: ret = 0xffffffff; break; } if (addr != 0x0cf8) { // don't flood the logfile when probing PCI BX_ERROR(("read from port 0x%04x with len %d returns 0x%x", addr, io_len, ret)); } } BX_INSTR_INP2(addr, io_len, ret); BX_DBG_IO_REPORT(addr, io_len, BX_READ, ret); return(ret); } /* * Write a byte of data to the IO memory address space. */ void BX_CPP_AttrRegparmN(3) bx_devices_c::outp(Bit16u addr, Bit32u value, unsigned io_len) { struct io_handler_struct *io_write_handler; BX_INSTR_OUTP(addr, io_len); BX_INSTR_OUTP2(addr, io_len, value); BX_DBG_IO_REPORT(addr, io_len, BX_WRITE, value); io_write_handler = write_port_to_handler[addr]; if (io_write_handler->mask & io_len) { ((bx_write_handler_t)io_write_handler->funct)(io_write_handler->this_ptr, (Bit32u)addr, value, io_len); } else if (addr != 0x0cf8) { // don't flood the logfile when probing PCI BX_ERROR(("write to port 0x%04x with len %d ignored", addr, io_len)); } } bx_bool bx_devices_c::is_serial_enabled() { char pname[24]; for (int i=0; iget_param_bool(pname)->get()) return true; } return false; } bx_bool bx_devices_c::is_usb_enabled() { char pname[20]; for (int i=0; iget_param_bool(pname)->get()) return true; } return false; } bx_bool bx_devices_c::is_parallel_enabled() { char pname[26]; for (int i=0; iget_param_bool(pname)->get()) return true; } return false; }