Commit | Line | Data |
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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 | * | |
6a32fd4d DM |
14 | * returns %o0: -status if status was non-zero, else |
15 | * %o0: num pages mapped | |
bade5622 DM |
16 | */ |
17 | .globl pci_sun4v_iommu_map | |
18 | pci_sun4v_iommu_map: | |
6a32fd4d | 19 | mov %o5, %g1 |
18397944 | 20 | mov HV_FAST_PCI_IOMMU_MAP, %o5 |
bade5622 | 21 | ta HV_FAST_TRAP |
6a32fd4d DM |
22 | brnz,pn %o0, 1f |
23 | sub %g0, %o0, %o0 | |
24 | mov %o1, %o0 | |
25 | 1: retl | |
26 | nop | |
bade5622 DM |
27 | |
28 | /* %o0: devhandle | |
29 | * %o1: tsbid | |
30 | * %o2: num ttes | |
31 | * | |
32 | * returns %o0: num ttes demapped | |
33 | */ | |
34 | .globl pci_sun4v_iommu_demap | |
35 | pci_sun4v_iommu_demap: | |
18397944 | 36 | mov HV_FAST_PCI_IOMMU_DEMAP, %o5 |
bade5622 DM |
37 | ta HV_FAST_TRAP |
38 | retl | |
39 | mov %o1, %o0 | |
7eae642f | 40 | |
18397944 DM |
41 | /* %o0: devhandle |
42 | * %o1: tsbid | |
43 | * %o2: &io_attributes | |
44 | * %o3: &real_address | |
45 | * | |
46 | * returns %o0: status | |
47 | */ | |
48 | .globl pci_sun4v_iommu_getmap | |
49 | pci_sun4v_iommu_getmap: | |
50 | mov %o2, %o4 | |
51 | mov HV_FAST_PCI_IOMMU_GETMAP, %o5 | |
52 | ta HV_FAST_TRAP | |
53 | stx %o1, [%o4] | |
54 | stx %o2, [%o3] | |
55 | retl | |
56 | mov %o0, %o0 | |
57 | ||
7eae642f DM |
58 | /* %o0: devhandle |
59 | * %o1: pci_device | |
60 | * %o2: pci_config_offset | |
61 | * %o3: size | |
62 | * | |
63 | * returns %o0: data | |
64 | * | |
65 | * If there is an error, the data will be returned | |
66 | * as all 1's. | |
67 | */ | |
68 | .globl pci_sun4v_config_get | |
69 | pci_sun4v_config_get: | |
18397944 | 70 | mov HV_FAST_PCI_CONFIG_GET, %o5 |
7eae642f DM |
71 | ta HV_FAST_TRAP |
72 | brnz,a,pn %o1, 1f | |
73 | mov -1, %o2 | |
74 | 1: retl | |
75 | mov %o2, %o0 | |
76 | ||
77 | /* %o0: devhandle | |
78 | * %o1: pci_device | |
79 | * %o2: pci_config_offset | |
80 | * %o3: size | |
81 | * %o4: data | |
82 | * | |
83 | * returns %o0: status | |
84 | * | |
85 | * status will be zero if the operation completed | |
86 | * successfully, else -1 if not | |
87 | */ | |
88 | .globl pci_sun4v_config_put | |
89 | pci_sun4v_config_put: | |
18397944 | 90 | mov HV_FAST_PCI_CONFIG_PUT, %o5 |
7eae642f DM |
91 | ta HV_FAST_TRAP |
92 | brnz,a,pn %o1, 1f | |
93 | mov -1, %o1 | |
94 | 1: retl | |
95 | mov %o1, %o0 |