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Convert the subpage wrapper to be a MemoryRegion 

Signed-off-by: Avi Kivity <avi@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Avi Kivity 2012-01-02 12:32:48 +02:00
parent dd81124bf6
commit 70c68e44bc
1 changed files with 18 additions and 52 deletions
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70
exec.c
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@ -2472,6 +2472,7 @@ static inline void tlb_set_dirty(CPUState *env,
#define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK)
typedef struct subpage_t { typedef struct subpage_t {
MemoryRegion iomem;
target_phys_addr_t base; target_phys_addr_t base;
ram_addr_t sub_io_index[TARGET_PAGE_SIZE]; ram_addr_t sub_io_index[TARGET_PAGE_SIZE];
ram_addr_t region_offset[TARGET_PAGE_SIZE]; ram_addr_t region_offset[TARGET_PAGE_SIZE];
@ -3309,10 +3310,10 @@ static CPUWriteMemoryFunc * const watch_mem_write[3] = {
watch_mem_writel, watch_mem_writel,
}; };
static inline uint32_t subpage_readlen (subpage_t *mmio, static uint64_t subpage_read(void *opaque, target_phys_addr_t addr,
target_phys_addr_t addr, unsigned len)
unsigned int len)
{ {
subpage_t *mmio = opaque;
unsigned int idx = SUBPAGE_IDX(addr); unsigned int idx = SUBPAGE_IDX(addr);
#if defined(DEBUG_SUBPAGE) #if defined(DEBUG_SUBPAGE)
printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__, printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__,
@ -3321,66 +3322,29 @@ static inline uint32_t subpage_readlen (subpage_t *mmio,
addr += mmio->region_offset[idx]; addr += mmio->region_offset[idx];
idx = mmio->sub_io_index[idx]; idx = mmio->sub_io_index[idx];
return io_mem_read(idx, addr, 1 <<len); return io_mem_read(idx, addr, len);
} }
static inline void subpage_writelen (subpage_t *mmio, target_phys_addr_t addr, static void subpage_write(void *opaque, target_phys_addr_t addr,
uint32_t value, unsigned int len) uint64_t value, unsigned len)
{ {
subpage_t *mmio = opaque;
unsigned int idx = SUBPAGE_IDX(addr); unsigned int idx = SUBPAGE_IDX(addr);
#if defined(DEBUG_SUBPAGE) #if defined(DEBUG_SUBPAGE)
printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d value %08x\n", printf("%s: subpage %p len %d addr " TARGET_FMT_plx
" idx %d value %"PRIx64"\n",
__func__, mmio, len, addr, idx, value); __func__, mmio, len, addr, idx, value);
#endif #endif
addr += mmio->region_offset[idx]; addr += mmio->region_offset[idx];
idx = mmio->sub_io_index[idx]; idx = mmio->sub_io_index[idx];
io_mem_write(idx, addr, value, 1 << len); io_mem_write(idx, addr, value, len);
} }
static uint32_t subpage_readb (void *opaque, target_phys_addr_t addr) static const MemoryRegionOps subpage_ops = {
{ .read = subpage_read,
return subpage_readlen(opaque, addr, 0); .write = subpage_write,
} .endianness = DEVICE_NATIVE_ENDIAN,
static void subpage_writeb (void *opaque, target_phys_addr_t addr,
uint32_t value)
{
subpage_writelen(opaque, addr, value, 0);
}
static uint32_t subpage_readw (void *opaque, target_phys_addr_t addr)
{
return subpage_readlen(opaque, addr, 1);
}
static void subpage_writew (void *opaque, target_phys_addr_t addr,
uint32_t value)
{
subpage_writelen(opaque, addr, value, 1);
}
static uint32_t subpage_readl (void *opaque, target_phys_addr_t addr)
{
return subpage_readlen(opaque, addr, 2);
}
static void subpage_writel (void *opaque, target_phys_addr_t addr,
uint32_t value)
{
subpage_writelen(opaque, addr, value, 2);
}
static CPUReadMemoryFunc * const subpage_read[] = {
&subpage_readb,
&subpage_readw,
&subpage_readl,
};
static CPUWriteMemoryFunc * const subpage_write[] = {
&subpage_writeb,
&subpage_writew,
&subpage_writel,
}; };
static uint32_t subpage_ram_readb(void *opaque, target_phys_addr_t addr) static uint32_t subpage_ram_readb(void *opaque, target_phys_addr_t addr)
@ -3475,7 +3439,9 @@ static subpage_t *subpage_init (target_phys_addr_t base, ram_addr_t *phys,
mmio = g_malloc0(sizeof(subpage_t)); mmio = g_malloc0(sizeof(subpage_t));
mmio->base = base; mmio->base = base;
subpage_memory = cpu_register_io_memory(subpage_read, subpage_write, mmio); memory_region_init_io(&mmio->iomem, &subpage_ops, mmio,
"subpage", TARGET_PAGE_SIZE);
subpage_memory = mmio->iomem.ram_addr;
#if defined(DEBUG_SUBPAGE) #if defined(DEBUG_SUBPAGE)
printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__,
mmio, base, TARGET_PAGE_SIZE, subpage_memory); mmio, base, TARGET_PAGE_SIZE, subpage_memory);