+++ /dev/null
-/*
- * 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 "exec/ioport.h"
-#include "trace.h"
-#include "exec/memory.h"
-#include "exec/address-spaces.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
-
-typedef struct MemoryRegionPortioList {
- MemoryRegion mr;
- void *portio_opaque;
- MemoryRegionPortio ports[];
-} MemoryRegionPortioList;
-
-/* 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 IOPortDestructor *ioport_destructor_table[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 */
-static 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) {
- ioport_read_table[bsize][i] = func;
- if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
- hw_error("register_ioport_read: invalid opaque for address 0x%x",
- i);
- ioport_opaque[i] = opaque;
- }
- return 0;
-}
-
-/* size is the word size in byte */
-static 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) {
- ioport_write_table[bsize][i] = func;
- if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
- hw_error("register_ioport_write: invalid opaque for address 0x%x",
- i);
- ioport_opaque[i] = opaque;
- }
- return 0;
-}
-
-static uint32_t ioport_readb_thunk(void *opaque, uint32_t addr)
-{
- IORange *ioport = opaque;
- uint64_t data;
-
- ioport->ops->read(ioport, addr - ioport->base, 1, &data);
- return data;
-}
-
-static uint32_t ioport_readw_thunk(void *opaque, uint32_t addr)
-{
- IORange *ioport = opaque;
- uint64_t data;
-
- ioport->ops->read(ioport, addr - ioport->base, 2, &data);
- return data;
-}
-
-static uint32_t ioport_readl_thunk(void *opaque, uint32_t addr)
-{
- IORange *ioport = opaque;
- uint64_t data;
-
- ioport->ops->read(ioport, addr - ioport->base, 4, &data);
- return data;
-}
-
-static void ioport_writeb_thunk(void *opaque, uint32_t addr, uint32_t data)
-{
- IORange *ioport = opaque;
-
- ioport->ops->write(ioport, addr - ioport->base, 1, data);
-}
-
-static void ioport_writew_thunk(void *opaque, uint32_t addr, uint32_t data)
-{
- IORange *ioport = opaque;
-
- ioport->ops->write(ioport, addr - ioport->base, 2, data);
-}
-
-static void ioport_writel_thunk(void *opaque, uint32_t addr, uint32_t data)
-{
- IORange *ioport = opaque;
-
- ioport->ops->write(ioport, addr - ioport->base, 4, data);
-}
-
-static void iorange_destructor_thunk(void *opaque)
-{
- IORange *iorange = opaque;
-
- if (iorange->ops->destructor) {
- iorange->ops->destructor(iorange);
- }
-}
-
-void ioport_register(IORange *ioport)
-{
- register_ioport_read(ioport->base, ioport->len, 1,
- ioport_readb_thunk, ioport);
- register_ioport_read(ioport->base, ioport->len, 2,
- ioport_readw_thunk, ioport);
- register_ioport_read(ioport->base, ioport->len, 4,
- ioport_readl_thunk, ioport);
- register_ioport_write(ioport->base, ioport->len, 1,
- ioport_writeb_thunk, ioport);
- register_ioport_write(ioport->base, ioport->len, 2,
- ioport_writew_thunk, ioport);
- register_ioport_write(ioport->base, ioport->len, 4,
- ioport_writel_thunk, ioport);
- ioport_destructor_table[ioport->base] = iorange_destructor_thunk;
-}
-
-void isa_unassign_ioport(pio_addr_t start, int length)
-{
- int i;
-
- if (ioport_destructor_table[start]) {
- ioport_destructor_table[start](ioport_opaque[start]);
- ioport_destructor_table[start] = NULL;
- }
- for(i = start; i < start + length; i++) {
- ioport_read_table[0][i] = NULL;
- ioport_read_table[1][i] = NULL;
- ioport_read_table[2][i] = NULL;
-
- ioport_write_table[0][i] = NULL;
- ioport_write_table[1][i] = NULL;
- ioport_write_table[2][i] = NULL;
-
- 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);
- trace_cpu_out(addr, val);
- address_space_write(&address_space_io, addr, &val, 1);
-}
-
-void cpu_outw(pio_addr_t addr, uint16_t val)
-{
- uint8_t buf[2];
-
- LOG_IOPORT("outw: %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
- trace_cpu_out(addr, val);
- stw_p(buf, val);
- address_space_write(&address_space_io, addr, buf, 2);
-}
-
-void cpu_outl(pio_addr_t addr, uint32_t val)
-{
- uint8_t buf[4];
-
- LOG_IOPORT("outl: %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
- trace_cpu_out(addr, val);
- stl_p(buf, val);
- address_space_write(&address_space_io, addr, buf, 4);
-}
-
-uint8_t cpu_inb(pio_addr_t addr)
-{
- uint8_t val;
-
- address_space_read(&address_space_io, addr, &val, 1);
- trace_cpu_in(addr, val);
- LOG_IOPORT("inb : %04"FMT_pioaddr" %02"PRIx8"\n", addr, val);
- return val;
-}
-
-uint16_t cpu_inw(pio_addr_t addr)
-{
- uint8_t buf[2];
- uint16_t val;
-
- address_space_read(&address_space_io, addr, buf, 2);
- val = lduw_p(buf);
- trace_cpu_in(addr, val);
- LOG_IOPORT("inw : %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
- return val;
-}
-
-uint32_t cpu_inl(pio_addr_t addr)
-{
- uint8_t buf[4];
- uint32_t val;
-
- address_space_read(&address_space_io, addr, buf, 4);
- val = ldl_p(buf);
- trace_cpu_in(addr, val);
- LOG_IOPORT("inl : %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
- return val;
-}
-
-void portio_list_init(PortioList *piolist,
- const MemoryRegionPortio *callbacks,
- void *opaque, const char *name)
-{
- unsigned n = 0;
-
- while (callbacks[n].size) {
- ++n;
- }
-
- piolist->ports = callbacks;
- piolist->nr = 0;
- piolist->regions = g_new0(MemoryRegion *, n);
- piolist->address_space = NULL;
- piolist->opaque = opaque;
- piolist->name = name;
-}
-
-void portio_list_destroy(PortioList *piolist)
-{
- g_free(piolist->regions);
-}
-
-static const MemoryRegionPortio *find_portio(MemoryRegionPortioList *mrpio,
- uint64_t offset, unsigned size,
- bool write)
-{
- const MemoryRegionPortio *mrp;
-
- for (mrp = mrpio->ports; mrp->size; ++mrp) {
- if (offset >= mrp->offset && offset < mrp->offset + mrp->len &&
- size == mrp->size &&
- (write ? (bool)mrp->write : (bool)mrp->read)) {
- return mrp;
- }
- }
- return NULL;
-}
-
-static uint64_t portio_read(void *opaque, hwaddr addr, unsigned size)
-{
- MemoryRegionPortioList *mrpio = opaque;
- const MemoryRegionPortio *mrp = find_portio(mrpio, addr, size, false);
- uint64_t data;
-
- data = ((uint64_t)1 << (size * 8)) - 1;
- if (mrp) {
- data = mrp->read(mrpio->portio_opaque, mrp->base + addr);
- } else if (size == 2) {
- mrp = find_portio(mrpio, addr, 1, false);
- assert(mrp);
- data = mrp->read(mrpio->portio_opaque, mrp->base + addr) |
- (mrp->read(mrpio->portio_opaque, mrp->base + addr + 1) << 8);
- }
- return data;
-}
-
-static void portio_write(void *opaque, hwaddr addr, uint64_t data,
- unsigned size)
-{
- MemoryRegionPortioList *mrpio = opaque;
- const MemoryRegionPortio *mrp = find_portio(mrpio, addr, size, true);
-
- if (mrp) {
- mrp->write(mrpio->portio_opaque, mrp->base + addr, data);
- } else if (size == 2) {
- mrp = find_portio(mrpio, addr, 1, true);
- assert(mrp);
- mrp->write(mrpio->portio_opaque, mrp->base + addr, data & 0xff);
- mrp->write(mrpio->portio_opaque, mrp->base + addr + 1, data >> 8);
- }
-}
-
-static const MemoryRegionOps portio_ops = {
- .read = portio_read,
- .write = portio_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
- .valid.unaligned = true,
- .impl.unaligned = true,
-};
-
-static void portio_list_add_1(PortioList *piolist,
- const MemoryRegionPortio *pio_init,
- unsigned count, unsigned start,
- unsigned off_low, unsigned off_high)
-{
- MemoryRegionPortioList *mrpio;
- unsigned i;
-
- /* Copy the sub-list and null-terminate it. */
- mrpio = g_malloc0(sizeof(MemoryRegionPortioList) +
- sizeof(MemoryRegionPortio) * (count + 1));
- mrpio->portio_opaque = piolist->opaque;
- memcpy(mrpio->ports, pio_init, sizeof(MemoryRegionPortio) * count);
- memset(mrpio->ports + count, 0, sizeof(MemoryRegionPortio));
-
- /* Adjust the offsets to all be zero-based for the region. */
- for (i = 0; i < count; ++i) {
- mrpio->ports[i].offset -= off_low;
- mrpio->ports[i].base = start + off_low;
- }
-
- /*
- * Use an alias so that the callback is called with an absolute address,
- * rather than an offset relative to to start + off_low.
- */
- memory_region_init_io(&mrpio->mr, &portio_ops, mrpio, piolist->name,
- off_high - off_low);
- memory_region_add_subregion(piolist->address_space,
- start + off_low, &mrpio->mr);
- piolist->regions[piolist->nr] = &mrpio->mr;
- ++piolist->nr;
-}
-
-void portio_list_add(PortioList *piolist,
- MemoryRegion *address_space,
- uint32_t start)
-{
- const MemoryRegionPortio *pio, *pio_start = piolist->ports;
- unsigned int off_low, off_high, off_last, count;
-
- piolist->address_space = address_space;
-
- /* Handle the first entry specially. */
- off_last = off_low = pio_start->offset;
- off_high = off_low + pio_start->len;
- count = 1;
-
- for (pio = pio_start + 1; pio->size != 0; pio++, count++) {
- /* All entries must be sorted by offset. */
- assert(pio->offset >= off_last);
- off_last = pio->offset;
-
- /* If we see a hole, break the region. */
- if (off_last > off_high) {
- portio_list_add_1(piolist, pio_start, count, start, off_low,
- off_high);
- /* ... and start collecting anew. */
- pio_start = pio;
- off_low = off_last;
- off_high = off_low + pio->len;
- count = 0;
- } else if (off_last + pio->len > off_high) {
- off_high = off_last + pio->len;
- }
- }
-
- /* There will always be an open sub-list. */
- portio_list_add_1(piolist, pio_start, count, start, off_low, off_high);
-}
-
-void portio_list_del(PortioList *piolist)
-{
- MemoryRegionPortioList *mrpio;
- unsigned i;
-
- for (i = 0; i < piolist->nr; ++i) {
- mrpio = container_of(piolist->regions[i], MemoryRegionPortioList, mr);
- memory_region_del_subregion(piolist->address_space, &mrpio->mr);
- memory_region_destroy(&mrpio->mr);
- g_free(mrpio);
- piolist->regions[i] = NULL;
- }
-}
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