/* pci_sun4v_asm: Hypervisor calls for PCI support.
   *

   * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>

   */

  #include <linux/linkage.h>

  #include <asm/hypervisor.h>
  
  	/* %o0: devhandle

  	 * %o1:	tsbid
  	 * %o2:	num ttes
  	 * %o3:	io_attributes
  	 * %o4:	io_page_list phys address
  	 *

  	 * returns %o0:	-status if status was non-zero, else
  	 *         %o0:	num pages mapped

  	 */

  ENTRY(pci_sun4v_iommu_map)

  	mov	%o5, %g1

  	mov	HV_FAST_PCI_IOMMU_MAP, %o5

  	ta	HV_FAST_TRAP

  	brnz,pn %o0, 1f
  	 sub	%g0, %o0, %o0
  	mov	%o1, %o0
  1:	retl
  	 nop

  ENDPROC(pci_sun4v_iommu_map)

  
  	/* %o0: devhandle
  	 * %o1:	tsbid
  	 * %o2:	num ttes
  	 *
  	 * returns %o0:	num ttes demapped
  	 */

  ENTRY(pci_sun4v_iommu_demap)

  	mov	HV_FAST_PCI_IOMMU_DEMAP, %o5

  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o1, %o0

  ENDPROC(pci_sun4v_iommu_demap)

  
  	/* %o0: devhandle

  	 * %o1:	tsbid
  	 * %o2:	&io_attributes
  	 * %o3:	&real_address
  	 *
  	 * returns %o0:	status
  	 */

  ENTRY(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

  ENDPROC(pci_sun4v_iommu_getmap)

  
  	/* %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.
  	 */

  ENTRY(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

  ENDPROC(pci_sun4v_config_get)

  
  	/* %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
  	 */

  ENTRY(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

  ENDPROC(pci_sun4v_config_put)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2: msiq phys address
  	 * %o3: num entries
  	 *
  	 * returns %o0: status
  	 *
  	 * status will be zero if the operation completed
  	 * successfully, else -1 if not
  	 */

  ENTRY(pci_sun4v_msiq_conf)

  	mov	HV_FAST_PCI_MSIQ_CONF, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_conf)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	&msiq_phys_addr
  	 * %o3:	&msiq_num_entries
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_info)

  	mov	%o2, %o4
  	mov	HV_FAST_PCI_MSIQ_INFO, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o4]
  	stx	%o2, [%o3]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_info)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	&valid
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_getvalid)

  	mov	HV_FAST_PCI_MSIQ_GETVALID, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_getvalid)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	valid
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_setvalid)

  	mov	HV_FAST_PCI_MSIQ_SETVALID, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_setvalid)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	&state
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_getstate)

  	mov	HV_FAST_PCI_MSIQ_GETSTATE, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_getstate)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	state
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_setstate)

  	mov	HV_FAST_PCI_MSIQ_SETSTATE, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_setstate)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	&head
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_gethead)

  	mov	HV_FAST_PCI_MSIQ_GETHEAD, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_gethead)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	head
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_sethead)

  	mov	HV_FAST_PCI_MSIQ_SETHEAD, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_sethead)

  
  	/* %o0: devhandle
  	 * %o1: msiqid
  	 * %o2:	&tail
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msiq_gettail)

  	mov	HV_FAST_PCI_MSIQ_GETTAIL, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msiq_gettail)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	&valid
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msi_getvalid)

  	mov	HV_FAST_PCI_MSI_GETVALID, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msi_getvalid)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	valid
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msi_setvalid)

  	mov	HV_FAST_PCI_MSI_SETVALID, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msi_setvalid)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	&msiq
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msi_getmsiq)

  	mov	HV_FAST_PCI_MSI_GETMSIQ, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msi_getmsiq)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	msitype
  	 * %o3:	msiq
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msi_setmsiq)

  	mov	HV_FAST_PCI_MSI_SETMSIQ, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msi_setmsiq)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	&state
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msi_getstate)

  	mov	HV_FAST_PCI_MSI_GETSTATE, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msi_getstate)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	state
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msi_setstate)

  	mov	HV_FAST_PCI_MSI_SETSTATE, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msi_setstate)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	&msiq
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msg_getmsiq)

  	mov	HV_FAST_PCI_MSG_GETMSIQ, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msg_getmsiq)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	msiq
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msg_setmsiq)

  	mov	HV_FAST_PCI_MSG_SETMSIQ, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msg_setmsiq)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	&valid
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msg_getvalid)

  	mov	HV_FAST_PCI_MSG_GETVALID, %o5
  	ta	HV_FAST_TRAP
  	stx	%o1, [%o2]
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msg_getvalid)

  
  	/* %o0: devhandle
  	 * %o1: msinum
  	 * %o2:	valid
  	 *
  	 * returns %o0: status
  	 */

  ENTRY(pci_sun4v_msg_setvalid)

  	mov	HV_FAST_PCI_MSG_SETVALID, %o5
  	ta	HV_FAST_TRAP
  	retl
  	 mov	%o0, %o0

  ENDPROC(pci_sun4v_msg_setvalid)