/*
* 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_UNUSED_IOPORT
# define LOG_UNUSED_IOPORT(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
#else
# define LOG_UNUSED_IOPORT(fmt, ...) do{ } while (0)
#endif
#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 * const 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 * const 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)
{
LOG_UNUSED_IOPORT("unused inb: port=0x%04"PRIx32"\n", address);
return 0xff;
}
static void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
{
LOG_UNUSED_IOPORT("unused outb: port=0x%04"PRIx32" data=0x%02"PRIx32"\n",
address, data);
}
/* 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) & IOPORTS_MASK;
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) & IOPORTS_MASK;
ioport_write(0, address, (data >> 8) & 0xff);
}
static uint32_t default_ioport_readl(void *opaque, uint32_t address)
{
LOG_UNUSED_IOPORT("unused inl: port=0x%04"PRIx32"\n", address);
return 0xffffffff;
}
static void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
{
LOG_UNUSED_IOPORT("unused outl: port=0x%04"PRIx32" data=0x%02"PRIx32"\n",
address, data);
}
static int ioport_bsize(int size, int *bsize)
{
if (size == 1) {
*bsize = 0;
} else if (size == 2) {
*bsize = 1;
} else if (size == 4) {
*bsize = 2;
} else {
return -1;
}
return 0;
}
/* size is the word size in byte */
int register_ioport_read(pio_addr_t start, int length, int size,
IOPortReadFunc *func, void *opaque)
{
int i, bsize;
if (ioport_bsize(size, &bsize)) {
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(pio_addr_t start, int length, int size,
IOPortWriteFunc *func, void *opaque)
{
int i, bsize;
if (ioport_bsize(size, &bsize)) {
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(pio_addr_t 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(pio_addr_t addr, uint8_t val)
{
LOG_IOPORT("outb: %04"FMT_pioaddr" %02"PRIx8"\n", addr, val);
ioport_write(0, addr, val);
}
void cpu_outw(pio_addr_t addr, uint16_t val)
{
LOG_IOPORT("outw: %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
ioport_write(1, addr, val);
}
void cpu_outl(pio_addr_t addr, uint32_t val)
{
LOG_IOPORT("outl: %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
ioport_write(2, addr, val);
}
uint8_t cpu_inb(pio_addr_t addr)
{
uint8_t val;
val = ioport_read(0, addr);
LOG_IOPORT("inb : %04"FMT_pioaddr" %02"PRIx8"\n", addr, val);
return val;
}
uint16_t cpu_inw(pio_addr_t addr)
{
uint16_t val;
val = ioport_read(1, addr);
LOG_IOPORT("inw : %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
return val;
}
uint32_t cpu_inl(pio_addr_t addr)
{
uint32_t val;
val = ioport_read(2, addr);
LOG_IOPORT("inl : %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
return val;
}