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Diffstat (limited to 'ioport.c')
-rw-r--r--ioport.c138
1 files changed, 101 insertions, 37 deletions
diff --git a/ioport.c b/ioport.c
index 56470c5ec3..347da2cf3b 100644
--- a/ioport.c
+++ b/ioport.c
@@ -28,6 +28,7 @@
#include "exec/ioport.h"
#include "trace.h"
#include "exec/memory.h"
+#include "exec/address-spaces.h"
/***********************************************************/
/* IO Port */
@@ -47,6 +48,12 @@
# 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];
@@ -279,27 +286,34 @@ 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;
@@ -307,8 +321,11 @@ uint8_t cpu_inb(pio_addr_t addr)
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;
@@ -316,8 +333,11 @@ uint16_t cpu_inw(pio_addr_t addr)
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;
@@ -336,7 +356,6 @@ void portio_list_init(PortioList *piolist,
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->name = name;
@@ -345,46 +364,96 @@ void portio_list_init(PortioList *piolist,
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, &portio_ops, mrpio, piolist->name,
+ off_high - off_low);
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;
}
@@ -427,19 +496,14 @@ void portio_list_add(PortioList *piolist,
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;
}
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-09 15:51:40 +0000