haraldwolff/qemu-patch-raspberry4
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Merge remote-tracking branch 'bonzini/iommu-for-anthony' into staging

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# By Jan Kiszka (2) and others
# Via Paolo Bonzini
* bonzini/iommu-for-anthony:
  exec: do tcg_commit only when tcg_enabled
  Revert "memory: Return -1 again on reads from unsigned regions"
  memory: Provide separate handling of unassigned io ports accesses
  exec: check offset_within_address_space for register subpage
  exec: fix writing to MMIO area with non-power-of-two length

Message-id: 1378401455-583-1-git-send-email-pbonzini@redhat.com
This commit is contained in:
Anthony Liguori 2013-09-05 13:38:53 -05:00
parent 863a834157 2641689a37
commit df7131623d
4 changed files with 30 additions and 4 deletions
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12
exec.c
View file

@ -854,7 +854,7 @@ static void mem_add(MemoryListener *listener, MemoryRegionSection *section)
now = remain;
if (int128_lt(remain.size, page_size)) {
register_subpage(d, &now);
} else if (remain.offset_within_region & ~TARGET_PAGE_MASK) {
} else if (remain.offset_within_address_space & ~TARGET_PAGE_MASK) {
now.size = page_size;
register_subpage(d, &now);
} else {
@ -1805,11 +1805,14 @@ static void memory_map_init(void)
address_space_init(&address_space_memory, system_memory, "memory");
system_io = g_malloc(sizeof(*system_io));
memory_region_init(system_io, NULL, "io", 65536);
memory_region_init_io(system_io, NULL, &unassigned_io_ops, NULL, "io",
65536);
address_space_init(&address_space_io, system_io, "I/O");
memory_listener_register(&core_memory_listener, &address_space_memory);
memory_listener_register(&tcg_memory_listener, &address_space_memory);
if (tcg_enabled()) {
memory_listener_register(&tcg_memory_listener, &address_space_memory);
}
}
MemoryRegion *get_system_memory(void)
@ -1913,6 +1916,9 @@ static int memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr)
if (l > access_size_max) {
l = access_size_max;
}
if (l & (l - 1)) {
l = 1 << (qemu_fls(l) - 1);
}
return l;
}

4
include/exec/ioport.h
View file

@ -45,6 +45,10 @@ typedef struct MemoryRegionPortio {
#define PORTIO_END_OF_LIST() { }
#ifndef CONFIG_USER_ONLY
extern const MemoryRegionOps unassigned_io_ops;
#endif
void cpu_outb(pio_addr_t addr, uint8_t val);
void cpu_outw(pio_addr_t addr, uint16_t val);
void cpu_outl(pio_addr_t addr, uint32_t val);

16
ioport.c
View file

@ -44,6 +44,22 @@ typedef struct MemoryRegionPortioList {
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);

2
memory.c
View file

@ -872,7 +872,7 @@ static uint64_t unassigned_mem_read(void *opaque, hwaddr addr,
if (current_cpu != NULL) {
cpu_unassigned_access(current_cpu, addr, false, false, 0, size);
}
return -1ULL;
return 0;
}
static void unassigned_mem_write(void *opaque, hwaddr addr,