[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / sparc64 / kernel / pci_sun4v_asm.S

/* pci_sun4v_asm: Hypervisor calls for PCI support.
 *
 * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
 */

#include <asm/hypervisor.h>

	/* %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
Commit	Line	Data
bade5622 DM	1	/* pci_sun4v_asm: Hypervisor calls for PCI support.
	2	*
	3	* Copyright (C) 2006 David S. Miller <davem@davemloft.net>
	4	*/
	5
	6	#include <asm/hypervisor.h>
	7
bade5622 DM	8	/* %o0: devhandle
	9	* %o1: tsbid
	10	* %o2: num ttes
	11	* %o3: io_attributes
	12	* %o4: io_page_list phys address
	13	*
	14	* returns %o0: num ttes mapped
	15	*/
	16	.globl pci_sun4v_iommu_map
	17	pci_sun4v_iommu_map:
18397944	18	mov HV_FAST_PCI_IOMMU_MAP, %o5
bade5622 DM	19	ta HV_FAST_TRAP
	20	retl
	21	mov %o1, %o0
	22
	23	/* %o0: devhandle
	24	* %o1: tsbid
	25	* %o2: num ttes
	26	*
	27	* returns %o0: num ttes demapped
	28	*/
	29	.globl pci_sun4v_iommu_demap
	30	pci_sun4v_iommu_demap:
18397944	31	mov HV_FAST_PCI_IOMMU_DEMAP, %o5
bade5622 DM	32	ta HV_FAST_TRAP
	33	retl
	34	mov %o1, %o0
7eae642f	35
18397944 DM	36	/* %o0: devhandle
	37	* %o1: tsbid
	38	* %o2: &io_attributes
	39	* %o3: &real_address
	40	*
	41	* returns %o0: status
	42	*/
	43	.globl pci_sun4v_iommu_getmap
	44	pci_sun4v_iommu_getmap:
	45	mov %o2, %o4
	46	mov HV_FAST_PCI_IOMMU_GETMAP, %o5
	47	ta HV_FAST_TRAP
	48	stx %o1, [%o4]
	49	stx %o2, [%o3]
	50	retl
	51	mov %o0, %o0
	52
7eae642f DM	53	/* %o0: devhandle
	54	* %o1: pci_device
	55	* %o2: pci_config_offset
	56	* %o3: size
	57	*
	58	* returns %o0: data
	59	*
	60	* If there is an error, the data will be returned
	61	* as all 1's.
	62	*/
	63	.globl pci_sun4v_config_get
	64	pci_sun4v_config_get:
18397944	65	mov HV_FAST_PCI_CONFIG_GET, %o5
7eae642f DM	66	ta HV_FAST_TRAP
	67	brnz,a,pn %o1, 1f
	68	mov -1, %o2
	69	1: retl
	70	mov %o2, %o0
	71
	72	/* %o0: devhandle
	73	* %o1: pci_device
	74	* %o2: pci_config_offset
	75	* %o3: size
	76	* %o4: data
	77	*
	78	* returns %o0: status
	79	*
	80	* status will be zero if the operation completed
	81	* successfully, else -1 if not
	82	*/
	83	.globl pci_sun4v_config_put
	84	pci_sun4v_config_put:
18397944	85	mov HV_FAST_PCI_CONFIG_PUT, %o5
7eae642f DM	86	ta HV_FAST_TRAP
	87	brnz,a,pn %o1, 1f
	88	mov -1, %o1
	89	1: retl
	90	mov %o1, %o0