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memory: Remove old_mmio accessors 

Now that all the users of old_mmio MemoryRegion accessors
have been converted, we can remove the core code support.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180824170422.5783-2-peter.maydell@linaro.org>
Based-on: <20180802174042.29234-1-peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
master
Peter Maydell 2018-08-24 18:04:20 +01:00 committed by Paolo Bonzini
parent 98f52cdbb5
commit 62a0db942d
3 changed files with 2 additions and 68 deletions
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2
docs/devel/memory.txt
View File

@ -342,5 +342,3 @@ various constraints can be supplied to control how these callbacks are called:
- .impl.unaligned specifies that the *implementation* supports unaligned
accesses; if false, unaligned accesses will be emulated by two aligned
accesses.
- .old_mmio eases the porting of code that was formerly using
cpu_register_io_memory(). It should not be used in new code.

5
include/exec/memory.h
View File

@ -201,11 +201,6 @@ struct MemoryRegionOps {
*/
bool unaligned;
} impl;
/* If .read and .write are not present, old_mmio may be used for
* backwards compatibility with old mmio registration
*/
const MemoryRegionMmio old_mmio;
};
enum IOMMUMemoryRegionAttr {

63
memory.c
View File

@ -423,32 +423,6 @@ static int get_cpu_index(void)
return -1;
}
static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
unsigned size,
signed shift,
uint64_t mask,
MemTxAttrs attrs)
{
uint64_t tmp;
tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
if (mr->subpage) {
trace_memory_region_subpage_read(get_cpu_index(), mr, addr, tmp, size);
} else if (mr == &io_mem_notdirty) {
/* Accesses to code which has previously been translated into a TB show
* up in the MMIO path, as accesses to the io_mem_notdirty
* MemoryRegion. */
trace_memory_region_tb_read(get_cpu_index(), addr, tmp, size);
} else if (TRACE_MEMORY_REGION_OPS_READ_ENABLED) {
hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
trace_memory_region_ops_read(get_cpu_index(), mr, abs_addr, tmp, size);
}
memory_region_shift_read_access(value, shift, mask, tmp);
return MEMTX_OK;
}
static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
@ -502,31 +476,6 @@ static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
return r;
}
static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
unsigned size,
signed shift,
uint64_t mask,
MemTxAttrs attrs)
{
uint64_t tmp = memory_region_shift_write_access(value, shift, mask);
if (mr->subpage) {
trace_memory_region_subpage_write(get_cpu_index(), mr, addr, tmp, size);
} else if (mr == &io_mem_notdirty) {
/* Accesses to code which has previously been translated into a TB show
* up in the MMIO path, as accesses to the io_mem_notdirty
* MemoryRegion. */
trace_memory_region_tb_write(get_cpu_index(), addr, tmp, size);
} else if (TRACE_MEMORY_REGION_OPS_WRITE_ENABLED) {
hwaddr abs_addr = memory_region_to_absolute_addr(mr, addr);
trace_memory_region_ops_write(get_cpu_index(), mr, abs_addr, tmp, size);
}
mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
return MEMTX_OK;
}
static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
@ -1418,16 +1367,12 @@ static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr,
mr->ops->impl.max_access_size,
memory_region_read_accessor,
mr, attrs);
} else if (mr->ops->read_with_attrs) {
} else {
return access_with_adjusted_size(addr, pval, size,
mr->ops->impl.min_access_size,
mr->ops->impl.max_access_size,
memory_region_read_with_attrs_accessor,
mr, attrs);
} else {
return access_with_adjusted_size(addr, pval, size, 1, 4,
memory_region_oldmmio_read_accessor,
mr, attrs);
}
}
@ -1499,17 +1444,13 @@ MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
mr->ops->impl.max_access_size,
memory_region_write_accessor, mr,
attrs);
} else if (mr->ops->write_with_attrs) {
} else {
return
access_with_adjusted_size(addr, &data, size,
mr->ops->impl.min_access_size,
mr->ops->impl.max_access_size,
memory_region_write_with_attrs_accessor,
mr, attrs);
} else {
return access_with_adjusted_size(addr, &data, size, 1, 4,
memory_region_oldmmio_write_accessor,
mr, attrs);
}
}