* splitted out ioport related stuffs from vl.c.
*/
-#include "ioport.h"
+#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];
+typedef struct MemoryRegionPortioList {
+ MemoryRegion mr;
+ void *portio_opaque;
+ MemoryRegionPortio ports[];
+} MemoryRegionPortioList;
-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 uint64_t unassigned_io_read(void *opaque, hwaddr addr, unsigned size)
{
- 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);
+ return -1ULL;
}
-static void ioport_write(int index, uint32_t address, uint32_t data)
+static void unassigned_io_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned size)
{
- 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)
+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_UNUSED_IOPORT("unused inb: port=0x%04"PRIx32"\n", address);
- return 0xff;
+ 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);
}
-static void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
+void cpu_outw(pio_addr_t addr, uint16_t val)
{
- LOG_UNUSED_IOPORT("unused outb: port=0x%04"PRIx32" data=0x%02"PRIx32"\n",
- address, data);
+ 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);
}
-/* default is to make two byte accesses */
-static uint32_t default_ioport_readw(void *opaque, uint32_t address)
+void cpu_outl(pio_addr_t addr, uint32_t val)
{
- uint32_t data;
- data = ioport_read(0, address);
- address = (address + 1) & IOPORTS_MASK;
- data |= ioport_read(0, address) << 8;
- return data;
+ 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);
}
-static void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
+uint8_t cpu_inb(pio_addr_t addr)
{
- ioport_write(0, address, data & 0xff);
- address = (address + 1) & IOPORTS_MASK;
- ioport_write(0, address, (data >> 8) & 0xff);
+ 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;
}
-static uint32_t default_ioport_readl(void *opaque, uint32_t address)
+uint16_t cpu_inw(pio_addr_t addr)
{
- LOG_UNUSED_IOPORT("unused inl: port=0x%04"PRIx32"\n", address);
- return 0xffffffff;
+ 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;
}
-static void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
+uint32_t cpu_inl(pio_addr_t addr)
{
- LOG_UNUSED_IOPORT("unused outl: port=0x%04"PRIx32" data=0x%02"PRIx32"\n",
- address, data);
+ 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;
}
-static int ioport_bsize(int size, int *bsize)
+void portio_list_init(PortioList *piolist,
+ Object *owner,
+ const MemoryRegionPortio *callbacks,
+ void *opaque, const char *name)
{
- if (size == 1) {
- *bsize = 0;
- } else if (size == 2) {
- *bsize = 1;
- } else if (size == 4) {
- *bsize = 2;
- } else {
- return -1;
+ unsigned n = 0;
+
+ while (callbacks[n].size) {
+ ++n;
}
- return 0;
+
+ piolist->ports = callbacks;
+ piolist->nr = 0;
+ piolist->regions = g_new0(MemoryRegion *, n);
+ piolist->address_space = NULL;
+ piolist->opaque = opaque;
+ piolist->owner = owner;
+ piolist->name = name;
+ piolist->flush_coalesced_mmio = false;
}
-/* size is the word size in byte */
-int register_ioport_read(pio_addr_t start, int length, int size,
- IOPortReadFunc *func, void *opaque)
+void portio_list_set_flush_coalesced(PortioList *piolist)
{
- 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;
+ piolist->flush_coalesced_mmio = true;
}
-/* size is the word size in byte */
-int register_ioport_write(pio_addr_t start, int length, int size,
- IOPortWriteFunc *func, void *opaque)
+void portio_list_destroy(PortioList *piolist)
{
- int i, bsize;
+ g_free(piolist->regions);
+}
- 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;
+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 0;
+ return NULL;
}
-void isa_unassign_ioport(pio_addr_t start, int length)
+static uint64_t portio_read(void *opaque, hwaddr addr, unsigned size)
{
- 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;
+ MemoryRegionPortioList *mrpio = opaque;
+ const MemoryRegionPortio *mrp = find_portio(mrpio, addr, size, false);
+ uint64_t data;
- ioport_opaque[i] = NULL;
+ 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;
}
-/***********************************************************/
-
-void cpu_outb(pio_addr_t addr, uint8_t val)
+static void portio_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned size)
{
- LOG_IOPORT("outb: %04"FMT_pioaddr" %02"PRIx8"\n", addr, val);
- ioport_write(0, addr, val);
-}
+ MemoryRegionPortioList *mrpio = opaque;
+ const MemoryRegionPortio *mrp = find_portio(mrpio, addr, size, true);
-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);
+ 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);
+ }
}
-void cpu_outl(pio_addr_t addr, uint32_t val)
+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)
{
- LOG_IOPORT("outl: %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
- ioport_write(2, addr, val);
-}
+ 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;
+ }
-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;
+ /*
+ * 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, 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, &mrpio->mr);
+ piolist->regions[piolist->nr] = &mrpio->mr;
+ ++piolist->nr;
}
-uint16_t cpu_inw(pio_addr_t addr)
+void portio_list_add(PortioList *piolist,
+ MemoryRegion *address_space,
+ uint32_t start)
{
- uint16_t val;
- val = ioport_read(1, addr);
- LOG_IOPORT("inw : %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
- return val;
+ 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);
}
-uint32_t cpu_inl(pio_addr_t addr)
+void portio_list_del(PortioList *piolist)
{
- uint32_t val;
- val = ioport_read(2, addr);
- LOG_IOPORT("inl : %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
- return val;
+ 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;
+ }
}
projects / qemu.git / blobdiff