提交 5851e08c 编写于 作者: A aliguori

qemu: add pci_unregister_device (Marcelo Tosatti)

Unregister the pci device, unassign its IO and memory regions, and free
associated data.

Add a callback so drivers can free device state.
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6603 c046a42c-6fe2-441c-8c8c-71466251a162
上级 51bf9e7e
......@@ -196,6 +196,48 @@ PCIDevice *pci_register_device(PCIBus *bus, const char *name,
return pci_dev;
}
static target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr)
{
return addr + pci_mem_base;
}
static void pci_unregister_io_regions(PCIDevice *pci_dev)
{
PCIIORegion *r;
int i;
for(i = 0; i < PCI_NUM_REGIONS; i++) {
r = &pci_dev->io_regions[i];
if (!r->size || r->addr == -1)
continue;
if (r->type == PCI_ADDRESS_SPACE_IO) {
isa_unassign_ioport(r->addr, r->size);
} else {
cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
r->size,
IO_MEM_UNASSIGNED);
}
}
}
int pci_unregister_device(PCIDevice *pci_dev)
{
int ret = 0;
if (pci_dev->unregister)
ret = pci_dev->unregister(pci_dev);
if (ret)
return ret;
pci_unregister_io_regions(pci_dev);
qemu_free_irqs(pci_dev->irq);
pci_irq_index--;
pci_dev->bus->devices[pci_dev->devfn] = NULL;
qemu_free(pci_dev);
return 0;
}
void pci_register_io_region(PCIDevice *pci_dev, int region_num,
uint32_t size, int type,
PCIMapIORegionFunc *map_func)
......@@ -218,11 +260,6 @@ void pci_register_io_region(PCIDevice *pci_dev, int region_num,
*(uint32_t *)(pci_dev->config + addr) = cpu_to_le32(type);
}
static target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr)
{
return addr + pci_mem_base;
}
static void pci_update_mappings(PCIDevice *d)
{
PCIIORegion *r;
......
......@@ -125,6 +125,7 @@ typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev,
uint32_t address, int len);
typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type);
typedef int PCIUnregisterFunc(PCIDevice *pci_dev);
#define PCI_ADDRESS_SPACE_MEM 0x00
#define PCI_ADDRESS_SPACE_IO 0x01
......@@ -189,6 +190,7 @@ struct PCIDevice {
/* do not access the following fields */
PCIConfigReadFunc *config_read;
PCIConfigWriteFunc *config_write;
PCIUnregisterFunc *unregister;
/* ??? This is a PC-specific hack, and should be removed. */
int irq_index;
......@@ -203,6 +205,7 @@ PCIDevice *pci_register_device(PCIBus *bus, const char *name,
int instance_size, int devfn,
PCIConfigReadFunc *config_read,
PCIConfigWriteFunc *config_write);
int pci_unregister_device(PCIDevice *pci_dev);
void pci_register_io_region(PCIDevice *pci_dev, int region_num,
uint32_t size, int type,
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册