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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 |