From 329939776005fad213086e54b038ccd39054e2bc Mon Sep 17 00:00:00 2001 From: Isaku Yamahata Date: Thu, 2 Jul 2009 19:32:06 +0900 Subject: split out ioport related stuffs from vl.c into ioport.c. Signed-off-by: Isaku Yamahata Signed-off-by: Anthony Liguori --- ioport.c | 258 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 258 insertions(+) create mode 100644 ioport.c (limited to 'ioport.c') diff --git a/ioport.c b/ioport.c new file mode 100644 index 0000000000..d875209115 --- /dev/null +++ b/ioport.c @@ -0,0 +1,258 @@ +/* + * QEMU System Emulator + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +/* + * splitted out ioport related stuffs from vl.c. + */ + +#include "ioport.h" + +/***********************************************************/ +/* IO Port */ + +//#define DEBUG_UNUSED_IOPORT +//#define DEBUG_IOPORT + +#ifdef DEBUG_IOPORT +# define LOG_IOPORT(...) qemu_log_mask(CPU_LOG_IOPORT, ## __VA_ARGS__) +#else +# define LOG_IOPORT(...) do { } while (0) +#endif + +/* XXX: use a two level table to limit memory usage */ + +static void *ioport_opaque[MAX_IOPORTS]; +static IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS]; +static IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS]; + +static IOPortReadFunc default_ioport_readb, default_ioport_readw, default_ioport_readl; +static IOPortWriteFunc default_ioport_writeb, default_ioport_writew, default_ioport_writel; + +static uint32_t ioport_read(int index, uint32_t address) +{ + static IOPortReadFunc *default_func[3] = { + default_ioport_readb, + default_ioport_readw, + default_ioport_readl + }; + IOPortReadFunc *func = ioport_read_table[index][address]; + if (!func) + func = default_func[index]; + return func(ioport_opaque[address], address); +} + +static void ioport_write(int index, uint32_t address, uint32_t data) +{ + static IOPortWriteFunc *default_func[3] = { + default_ioport_writeb, + default_ioport_writew, + default_ioport_writel + }; + IOPortWriteFunc *func = ioport_write_table[index][address]; + if (!func) + func = default_func[index]; + func(ioport_opaque[address], address, data); +} + +static uint32_t default_ioport_readb(void *opaque, uint32_t address) +{ +#ifdef DEBUG_UNUSED_IOPORT + fprintf(stderr, "unused inb: port=0x%04x\n", address); +#endif + return 0xff; +} + +static void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data) +{ +#ifdef DEBUG_UNUSED_IOPORT + fprintf(stderr, "unused outb: port=0x%04x data=0x%02x\n", address, data); +#endif +} + +/* default is to make two byte accesses */ +static uint32_t default_ioport_readw(void *opaque, uint32_t address) +{ + uint32_t data; + data = ioport_read(0, address); + address = (address + 1) & (MAX_IOPORTS - 1); + data |= ioport_read(0, address) << 8; + return data; +} + +static void default_ioport_writew(void *opaque, uint32_t address, uint32_t data) +{ + ioport_write(0, address, data & 0xff); + address = (address + 1) & (MAX_IOPORTS - 1); + ioport_write(0, address, (data >> 8) & 0xff); +} + +static uint32_t default_ioport_readl(void *opaque, uint32_t address) +{ +#ifdef DEBUG_UNUSED_IOPORT + fprintf(stderr, "unused inl: port=0x%04x\n", address); +#endif + return 0xffffffff; +} + +static void default_ioport_writel(void *opaque, uint32_t address, uint32_t data) +{ +#ifdef DEBUG_UNUSED_IOPORT + fprintf(stderr, "unused outl: port=0x%04x data=0x%02x\n", address, data); +#endif +} + +/* size is the word size in byte */ +int register_ioport_read(int start, int length, int size, + IOPortReadFunc *func, void *opaque) +{ + int i, bsize; + + if (size == 1) { + bsize = 0; + } else if (size == 2) { + bsize = 1; + } else if (size == 4) { + bsize = 2; + } else { + hw_error("register_ioport_read: invalid size"); + return -1; + } + for(i = start; i < start + length; i += size) { + ioport_read_table[bsize][i] = func; + if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque) + hw_error("register_ioport_read: invalid opaque"); + ioport_opaque[i] = opaque; + } + return 0; +} + +/* size is the word size in byte */ +int register_ioport_write(int start, int length, int size, + IOPortWriteFunc *func, void *opaque) +{ + int i, bsize; + + if (size == 1) { + bsize = 0; + } else if (size == 2) { + bsize = 1; + } else if (size == 4) { + bsize = 2; + } else { + hw_error("register_ioport_write: invalid size"); + return -1; + } + for(i = start; i < start + length; i += size) { + ioport_write_table[bsize][i] = func; + if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque) + hw_error("register_ioport_write: invalid opaque"); + ioport_opaque[i] = opaque; + } + return 0; +} + +void isa_unassign_ioport(int start, int length) +{ + int i; + + for(i = start; i < start + length; i++) { + ioport_read_table[0][i] = default_ioport_readb; + ioport_read_table[1][i] = default_ioport_readw; + ioport_read_table[2][i] = default_ioport_readl; + + ioport_write_table[0][i] = default_ioport_writeb; + ioport_write_table[1][i] = default_ioport_writew; + ioport_write_table[2][i] = default_ioport_writel; + + ioport_opaque[i] = NULL; + } +} + +/***********************************************************/ + +void cpu_outb(CPUState *env, int addr, int val) +{ + LOG_IOPORT("outb: %04x %02x\n", addr, val); + ioport_write(0, addr, val); +#ifdef CONFIG_KQEMU + if (env) + env->last_io_time = cpu_get_time_fast(); +#endif +} + +void cpu_outw(CPUState *env, int addr, int val) +{ + LOG_IOPORT("outw: %04x %04x\n", addr, val); + ioport_write(1, addr, val); +#ifdef CONFIG_KQEMU + if (env) + env->last_io_time = cpu_get_time_fast(); +#endif +} + +void cpu_outl(CPUState *env, int addr, int val) +{ + LOG_IOPORT("outl: %04x %08x\n", addr, val); + ioport_write(2, addr, val); +#ifdef CONFIG_KQEMU + if (env) + env->last_io_time = cpu_get_time_fast(); +#endif +} + +int cpu_inb(CPUState *env, int addr) +{ + int val; + val = ioport_read(0, addr); + LOG_IOPORT("inb : %04x %02x\n", addr, val); +#ifdef CONFIG_KQEMU + if (env) + env->last_io_time = cpu_get_time_fast(); +#endif + return val; +} + +int cpu_inw(CPUState *env, int addr) +{ + int val; + val = ioport_read(1, addr); + LOG_IOPORT("inw : %04x %04x\n", addr, val); +#ifdef CONFIG_KQEMU + if (env) + env->last_io_time = cpu_get_time_fast(); +#endif + return val; +} + +int cpu_inl(CPUState *env, int addr) +{ + int val; + val = ioport_read(2, addr); + LOG_IOPORT("inl : %04x %08x\n", addr, val); +#ifdef CONFIG_KQEMU + if (env) + env->last_io_time = cpu_get_time_fast(); +#endif + return val; +} + -- cgit v1.2.1