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exec/ioport: Add portio_list_set_enabled()

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Some SuperI/O devices such as the VIA south bridges or the PC87312 controller
allow to enable or disable their SuperI/O functions. Add a convenience function
for implementing this in the VIA south bridges.

The naming of the functions is inspired by its memory_region_set_enabled()
pendant.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-7-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Bernhard Beschow 2024-01-14 13:39:06 +01:00 committed by Michael S. Tsirkin
parent ad2b652341
commit f165cdf102
3 changed files with 11 additions and 0 deletions
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1
docs/devel/migration/main.rst
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@ -444,6 +444,7 @@ Examples of such API functions are:
- memory_region_set_address()
- memory_region_set_alias_offset()
- portio_list_set_address()
- portio_list_set_enabled()
Iterative device migration
--------------------------

1
include/exec/ioport.h
View File

@ -71,6 +71,7 @@ void portio_list_add(PortioList *piolist,
struct MemoryRegion *address_space,
uint32_t addr);
void portio_list_del(PortioList *piolist);
void portio_list_set_enabled(PortioList *piolist, bool enabled);
void portio_list_set_address(PortioList *piolist, uint32_t addr);
#endif /* IOPORT_H */

9
system/ioport.c
View File

@ -324,6 +324,15 @@ void portio_list_del(PortioList *piolist)
}
}
void portio_list_set_enabled(PortioList *piolist, bool enabled)
{
unsigned i;
for (i = 0; i < piolist->nr; ++i) {
memory_region_set_enabled(piolist->regions[i], enabled);
}
}
void portio_list_set_address(PortioList *piolist, uint32_t addr)
{
MemoryRegionPortioList *mrpio;