Import upstream 1.6.0.upstream/1.6.0

Change-Id: Icf52b556470cac8677297f2ef14ded16684f7887
Signed-off-by: Junfeng Dong <junfeng.dong@intel.com>

1 files changed, 104 insertions, 283 deletions

diff --git a/ioport.c b/ioport.c
index 6e4ca0dd9..79b7f1ae3 100644
--- a/ioport.c
+++ b/ioport.c
@@ -25,288 +25,57 @@
  * splitted out ioport related stuffs from vl.c.
  */
 
-#include "ioport.h"
+#include "exec/ioport.h"
 #include "trace.h"
-#include "memory.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);
-}
-
-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;
-    }
-}
-
-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]);
-}
-
-/***********************************************************/
+typedef struct MemoryRegionPortioList {
+    MemoryRegion mr;
+    void *portio_opaque;
+    MemoryRegionPortio ports[];
+} MemoryRegionPortioList;
 
 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;
@@ -314,8 +83,11 @@ 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;
@@ -323,14 +95,18 @@ 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;
 }
 
 void portio_list_init(PortioList *piolist,
+                      Object *owner,
                       const MemoryRegionPortio *callbacks,
                       void *opaque, const char *name)
 {
@@ -343,55 +119,105 @@ 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->owner = owner;
     piolist->name = name;
 }
 
 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);
     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;
 }
 
@@ -434,19 +260,14 @@ 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;
     }
 }