diff options
| author | Avi Kivity <avi@redhat.com> | 2011-08-15 17:17:29 +0300 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2011-08-22 10:47:47 -0500 |
| commit | d76120135b9ed5ea34c2038629dc9bc563f46108 (patch) | |
| tree | f9b6c7ca5d516c8e3018e20966726b0f2252abbb /hw | |
| parent | b6dcbe086c77ec683f5ff0b693593cda1d61f3a1 (diff) | |
sysbus: add a variant of sysbus_init_mmio_cb with an unmap callback
sysbus_init_mmio_cb() uses the destructive IO_MEM_UNASSIGNED to remove a
region. Provide an alternative that calls an unmap callback, so the removal
may be done non-destructively.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/sysbus.c | 15 | ||||
| -rw-r--r-- | hw/sysbus.h | 3 |
2 files changed, 18 insertions, 0 deletions
diff --git a/hw/sysbus.c b/hw/sysbus.c index f8f1746658..1e57f0922a 100644 --- a/hw/sysbus.c +++ b/hw/sysbus.c @@ -53,6 +53,8 @@ void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr) if (dev->mmio[n].memory) { memory_region_del_subregion(get_system_memory(), dev->mmio[n].memory); + } else if (dev->mmio[n].unmap) { + dev->mmio[n].unmap(dev, dev->mmio[n].addr); } else { cpu_register_physical_memory(dev->mmio[n].addr, dev->mmio[n].size, IO_MEM_UNASSIGNED); @@ -117,6 +119,19 @@ void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size, dev->mmio[n].cb = cb; } +void sysbus_init_mmio_cb2(SysBusDevice *dev, + mmio_mapfunc cb, mmio_mapfunc unmap) +{ + int n; + + assert(dev->num_mmio < QDEV_MAX_MMIO); + n = dev->num_mmio++; + dev->mmio[n].addr = -1; + dev->mmio[n].size = 0; + dev->mmio[n].cb = cb; + dev->mmio[n].unmap = unmap; +} + void sysbus_init_mmio_region(SysBusDevice *dev, MemoryRegion *memory) { int n; diff --git a/hw/sysbus.h b/hw/sysbus.h index 5f62e2da31..16fd969409 100644 --- a/hw/sysbus.h +++ b/hw/sysbus.h @@ -23,6 +23,7 @@ struct SysBusDevice { target_phys_addr_t addr; target_phys_addr_t size; mmio_mapfunc cb; + mmio_mapfunc unmap; ram_addr_t iofunc; MemoryRegion *memory; } mmio[QDEV_MAX_MMIO]; @@ -48,6 +49,8 @@ void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size, ram_addr_t iofunc); void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size, mmio_mapfunc cb); +void sysbus_init_mmio_cb2(SysBusDevice *dev, + mmio_mapfunc cb, mmio_mapfunc unmap); void sysbus_init_mmio_region(SysBusDevice *dev, MemoryRegion *memory); void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p); void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target); |