--- /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"
+
+//#define DEBUG_IOPORT
+
+#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;
+
+static uint64_t unassigned_io_read(void *opaque, hwaddr addr, unsigned size)
+{
+ return -1ULL;
+}
+
+static void unassigned_io_write(void *opaque, hwaddr addr, uint64_t val,
+ unsigned size)
+{
+}
+
+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);
+ address_space_write(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED,
+ &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, MEMTXATTRS_UNSPECIFIED,
+ 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, MEMTXATTRS_UNSPECIFIED,
+ buf, 4);
+}
+
+uint8_t cpu_inb(pio_addr_t addr)
+{
+ uint8_t val;
+
+ address_space_read(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED,
+ &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, MEMTXATTRS_UNSPECIFIED, 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, MEMTXATTRS_UNSPECIFIED, 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)
+{
+ 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->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)
+{
+ MemoryRegionPortioList *mrpio;
+ unsigned i;
+
+ for (i = 0; i < piolist->nr; ++i) {
+ mrpio = container_of(piolist->regions[i], MemoryRegionPortioList, mr);
+ object_unparent(OBJECT(&mrpio->mr));
+ g_free(mrpio);
+ }
+ 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);
+ if (mrp) {
+ data = mrp->read(mrpio->portio_opaque, mrp->base + addr);
+ if (addr + 1 < mrp->offset + mrp->len) {
+ data |= mrp->read(mrpio->portio_opaque, mrp->base + addr + 1) << 8;
+ } else {
+ data |= 0xff00;
+ }
+ }
+ }
+ 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);
+ if (mrp) {
+ mrp->write(mrpio->portio_opaque, mrp->base + addr, data & 0xff);
+ if (addr + 1 < mrp->offset + mrp->len) {
+ 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;
+ }
+
+ 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;
+}
+
+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 + pio_start->size - 1;
+ 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 + pio_start->size - 1;
+ count = 0;
+ } else if (off_last + pio->len > off_high) {
+ off_high = off_last + pio->len + pio_start->size - 1;
+ }
+ }
+
+ /* 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);
+ }
+}
Code Review / kvmfornfv.git / blobdiff