#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
-/* 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 */
-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 */
-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);
-}
+typedef struct MemoryRegionPortioList {
+ MemoryRegion mr;
+ void *portio_opaque;
+ MemoryRegionPortio ports[];
+} MemoryRegionPortioList;
-static void ioport_writew_thunk(void *opaque, uint32_t addr, uint32_t data)
+static uint64_t unassigned_io_read(void *opaque, hwaddr addr, unsigned size)
{
- IORange *ioport = opaque;
-
- ioport->ops->write(ioport, addr - ioport->base, 2, data);
+ return -1ULL;
}
-static void ioport_writel_thunk(void *opaque, uint32_t addr, uint32_t data)
+static void unassigned_io_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned size)
{
- 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;
- }
-}
-
-bool isa_is_ioport_assigned(pio_addr_t start)
-{
- return (ioport_read_table[0][start] || ioport_write_table[0][start] ||
- ioport_read_table[1][start] || ioport_write_table[1][start] ||
- ioport_read_table[2][start] || ioport_write_table[2][start]);
-}
-
-/***********************************************************/
+const MemoryRegionOps unassigned_io_ops = {
+ .read = unassigned_io_read,
+ .write = unassigned_io_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
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);
- ioport_write(0, 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);
- ioport_write(1, 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);
- ioport_write(2, 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;
- val = ioport_read(0, addr);
+
+ 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;
- val = ioport_read(1, addr);
+
+ 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;
- val = ioport_read(2, addr);
+
+ 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,
+ Object *owner,
const MemoryRegionPortio *callbacks,
void *opaque, const char *name)
{
piolist->ports = callbacks;
piolist->nr = 0;
piolist->regions = g_new0(MemoryRegion *, n);
- piolist->aliases = g_new0(MemoryRegion *, n);
piolist->address_space = NULL;
piolist->opaque = opaque;
+ piolist->owner = owner;
piolist->name = name;
+ piolist->flush_coalesced_mmio = false;
+}
+
+void portio_list_set_flush_coalesced(PortioList *piolist)
+{
+ piolist->flush_coalesced_mmio = true;
}
void portio_list_destroy(PortioList *piolist)
{
g_free(piolist->regions);
- g_free(piolist->aliases);
}
+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)
{
- MemoryRegionPortio *pio;
- MemoryRegionOps *ops;
- MemoryRegion *region, *alias;
+ MemoryRegionPortioList *mrpio;
unsigned i;
/* Copy the sub-list and null-terminate it. */
- pio = g_new(MemoryRegionPortio, count + 1);
- memcpy(pio, pio_init, sizeof(MemoryRegionPortio) * count);
- memset(pio + count, 0, sizeof(MemoryRegionPortio));
+ 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) {
- pio[i].offset -= off_low;
+ mrpio->ports[i].offset -= off_low;
+ mrpio->ports[i].base = start + off_low;
}
- ops = g_new0(MemoryRegionOps, 1);
- ops->old_portio = pio;
-
- region = g_new(MemoryRegion, 1);
- alias = g_new(MemoryRegion, 1);
/*
* 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(region, ops, piolist->opaque, piolist->name,
- INT64_MAX);
- memory_region_init_alias(alias, piolist->name,
- region, start + off_low, off_high - off_low);
+ memory_region_init_io(&mrpio->mr, piolist->owner, &portio_ops, mrpio,
+ piolist->name, off_high - off_low);
+ if (piolist->flush_coalesced_mmio) {
+ memory_region_set_flush_coalesced(&mrpio->mr);
+ }
memory_region_add_subregion(piolist->address_space,
- start + off_low, alias);
- piolist->regions[piolist->nr] = region;
- piolist->aliases[piolist->nr] = alias;
+ start + off_low, &mrpio->mr);
+ piolist->regions[piolist->nr] = &mrpio->mr;
++piolist->nr;
}
void portio_list_del(PortioList *piolist)
{
- MemoryRegion *mr, *alias;
+ MemoryRegionPortioList *mrpio;
unsigned i;
for (i = 0; i < piolist->nr; ++i) {
- mr = piolist->regions[i];
- alias = piolist->aliases[i];
- memory_region_del_subregion(piolist->address_space, alias);
- memory_region_destroy(alias);
- memory_region_destroy(mr);
- g_free((MemoryRegionOps *)mr->ops);
- g_free(mr);
- g_free(alias);
+ 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;
- piolist->aliases[i] = NULL;
}
}
projects / qemu.git / blobdiff