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[Qemu-devel] [patch 21/24] QEMU/KVM: add pci_unregister_device
From: |
Marcelo Tosatti |
Subject: |
[Qemu-devel] [patch 21/24] QEMU/KVM: add pci_unregister_device |
Date: |
Tue, 11 Mar 2008 17:12:12 -0300 |
User-agent: |
quilt/0.46-1 |
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: Marcelo Tosatti <address@hidden>
Index: kvm-userspace.hotplug2/qemu/hw/pci.c
===================================================================
--- kvm-userspace.hotplug2.orig/qemu/hw/pci.c
+++ kvm-userspace.hotplug2/qemu/hw/pci.c
@@ -185,6 +185,48 @@ PCIDevice *pci_register_device(PCIBus *b
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)
+ 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)
@@ -207,10 +249,6 @@ void pci_register_io_region(PCIDevice *p
*(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)
{
Index: kvm-userspace.hotplug2/qemu/hw/pci.h
===================================================================
--- kvm-userspace.hotplug2.orig/qemu/hw/pci.h
+++ kvm-userspace.hotplug2/qemu/hw/pci.h
@@ -15,6 +15,7 @@ typedef uint32_t PCIConfigReadFunc(PCIDe
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
@@ -56,6 +57,7 @@ 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;
@@ -71,6 +73,8 @@ PCIDevice *pci_register_device(PCIBus *b
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,
PCIMapIORegionFunc *map_func);
--
- [Qemu-devel] Re: [kvm-devel] [patch 17/24] QEMU/KVM: add cpu_unregister_io_memory and make io mem table index dynamic, (continued)
[Qemu-devel] [patch 19/24] QEMU/KVM: handle SEJ notifications, Marcelo Tosatti, 2008/03/12
[Qemu-devel] [patch 20/24] QEMU/KVM: add qemu_free_irqs, Marcelo Tosatti, 2008/03/12
[Qemu-devel] [patch 22/24] QEMU/KVM: LSI SCSI and e1000 unregister callbacks, Marcelo Tosatti, 2008/03/12
[Qemu-devel] [patch 23/24] QEMU/KVM: zero ioport_opaque on isa_unassign_ioport, Marcelo Tosatti, 2008/03/12
[Qemu-devel] [patch 24/24] QEMU/KVM: device hot-remove, Marcelo Tosatti, 2008/03/12
[Qemu-devel] [patch 08/24] QEMU/KVM: drive removal support, Marcelo Tosatti, 2008/03/12
[Qemu-devel] [patch 16/24] QEMU/KVM: device and disk hot-add, Marcelo Tosatti, 2008/03/12
[Qemu-devel] [patch 21/24] QEMU/KVM: add pci_unregister_device,
Marcelo Tosatti <=
[Qemu-devel] [patch 18/24] QEMU/KVM: notify _EJ0 through _SEJ OperationRegion, Marcelo Tosatti, 2008/03/12
[Qemu-devel] Re: [kvm-devel] [patch 00/24] QEMU ACPI PCI hotplug support, Avi Kivity, 2008/03/16