102 lines
1.8 KiB
ArmAsm
102 lines
1.8 KiB
ArmAsm
/* pci_sun4v_asm: Hypervisor calls for PCI support.
|
|
*
|
|
* Copyright (C) 2006 David S. Miller <davem@davemloft.net>
|
|
*/
|
|
|
|
#include <asm/hypervisor.h>
|
|
|
|
/* %o0: devhandle
|
|
* %o1: devino
|
|
*
|
|
* returns %o0: sysino
|
|
*/
|
|
.globl pci_sun4v_devino_to_sysino
|
|
pci_sun4v_devino_to_sysino:
|
|
mov HV_FAST_INTR_DEVINO2SYSINO, %o5
|
|
ta HV_FAST_TRAP
|
|
retl
|
|
mov %o1, %o0
|
|
|
|
/* %o0: devhandle
|
|
* %o1: tsbid
|
|
* %o2: num ttes
|
|
* %o3: io_attributes
|
|
* %o4: io_page_list phys address
|
|
*
|
|
* returns %o0: num ttes mapped
|
|
*/
|
|
.globl pci_sun4v_iommu_map
|
|
pci_sun4v_iommu_map:
|
|
mov HV_FAST_PCI_IOMMU_MAP, %o5
|
|
ta HV_FAST_TRAP
|
|
retl
|
|
mov %o1, %o0
|
|
|
|
/* %o0: devhandle
|
|
* %o1: tsbid
|
|
* %o2: num ttes
|
|
*
|
|
* returns %o0: num ttes demapped
|
|
*/
|
|
.globl pci_sun4v_iommu_demap
|
|
pci_sun4v_iommu_demap:
|
|
mov HV_FAST_PCI_IOMMU_DEMAP, %o5
|
|
ta HV_FAST_TRAP
|
|
retl
|
|
mov %o1, %o0
|
|
|
|
/* %o0: devhandle
|
|
* %o1: tsbid
|
|
* %o2: &io_attributes
|
|
* %o3: &real_address
|
|
*
|
|
* returns %o0: status
|
|
*/
|
|
.globl pci_sun4v_iommu_getmap
|
|
pci_sun4v_iommu_getmap:
|
|
mov %o2, %o4
|
|
mov HV_FAST_PCI_IOMMU_GETMAP, %o5
|
|
ta HV_FAST_TRAP
|
|
stx %o1, [%o4]
|
|
stx %o2, [%o3]
|
|
retl
|
|
mov %o0, %o0
|
|
|
|
/* %o0: devhandle
|
|
* %o1: pci_device
|
|
* %o2: pci_config_offset
|
|
* %o3: size
|
|
*
|
|
* returns %o0: data
|
|
*
|
|
* If there is an error, the data will be returned
|
|
* as all 1's.
|
|
*/
|
|
.globl pci_sun4v_config_get
|
|
pci_sun4v_config_get:
|
|
mov HV_FAST_PCI_CONFIG_GET, %o5
|
|
ta HV_FAST_TRAP
|
|
brnz,a,pn %o1, 1f
|
|
mov -1, %o2
|
|
1: retl
|
|
mov %o2, %o0
|
|
|
|
/* %o0: devhandle
|
|
* %o1: pci_device
|
|
* %o2: pci_config_offset
|
|
* %o3: size
|
|
* %o4: data
|
|
*
|
|
* returns %o0: status
|
|
*
|
|
* status will be zero if the operation completed
|
|
* successfully, else -1 if not
|
|
*/
|
|
.globl pci_sun4v_config_put
|
|
pci_sun4v_config_put:
|
|
mov HV_FAST_PCI_CONFIG_PUT, %o5
|
|
ta HV_FAST_TRAP
|
|
brnz,a,pn %o1, 1f
|
|
mov -1, %o1
|
|
1: retl
|
|
mov %o1, %o0
|