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| 1 | /* n2_asm.S: Hypervisor calls for NCS support. |
| 2 | * |
| 3 | * Copyright (C) 2009 David S. Miller <davem@davemloft.net> |
| 4 | */ |
| 5 | |
| 6 | #include <linux/linkage.h> |
| 7 | #include <asm/hypervisor.h> |
| 8 | #include "n2_core.h" |
| 9 | |
| 10 | /* o0: queue type |
| 11 | * o1: RA of queue |
| 12 | * o2: num entries in queue |
| 13 | * o3: address of queue handle return |
| 14 | */ |
| 15 | ENTRY(sun4v_ncs_qconf) |
| 16 | mov HV_FAST_NCS_QCONF, %o5 |
| 17 | ta HV_FAST_TRAP |
| 18 | stx %o1, [%o3] |
| 19 | retl |
| 20 | nop |
| 21 | ENDPROC(sun4v_ncs_qconf) |
| 22 | |
| 23 | /* %o0: queue handle |
| 24 | * %o1: address of queue type return |
| 25 | * %o2: address of queue base address return |
| 26 | * %o3: address of queue num entries return |
| 27 | */ |
| 28 | ENTRY(sun4v_ncs_qinfo) |
| 29 | mov %o1, %g1 |
| 30 | mov %o2, %g2 |
| 31 | mov %o3, %g3 |
| 32 | mov HV_FAST_NCS_QINFO, %o5 |
| 33 | ta HV_FAST_TRAP |
| 34 | stx %o1, [%g1] |
| 35 | stx %o2, [%g2] |
| 36 | stx %o3, [%g3] |
| 37 | retl |
| 38 | nop |
| 39 | ENDPROC(sun4v_ncs_qinfo) |
| 40 | |
| 41 | /* %o0: queue handle |
| 42 | * %o1: address of head offset return |
| 43 | */ |
| 44 | ENTRY(sun4v_ncs_gethead) |
| 45 | mov %o1, %o2 |
| 46 | mov HV_FAST_NCS_GETHEAD, %o5 |
| 47 | ta HV_FAST_TRAP |
| 48 | stx %o1, [%o2] |
| 49 | retl |
| 50 | nop |
| 51 | ENDPROC(sun4v_ncs_gethead) |
| 52 | |
| 53 | /* %o0: queue handle |
| 54 | * %o1: address of tail offset return |
| 55 | */ |
| 56 | ENTRY(sun4v_ncs_gettail) |
| 57 | mov %o1, %o2 |
| 58 | mov HV_FAST_NCS_GETTAIL, %o5 |
| 59 | ta HV_FAST_TRAP |
| 60 | stx %o1, [%o2] |
| 61 | retl |
| 62 | nop |
| 63 | ENDPROC(sun4v_ncs_gettail) |
| 64 | |
| 65 | /* %o0: queue handle |
| 66 | * %o1: new tail offset |
| 67 | */ |
| 68 | ENTRY(sun4v_ncs_settail) |
| 69 | mov HV_FAST_NCS_SETTAIL, %o5 |
| 70 | ta HV_FAST_TRAP |
| 71 | retl |
| 72 | nop |
| 73 | ENDPROC(sun4v_ncs_settail) |
| 74 | |
| 75 | /* %o0: queue handle |
| 76 | * %o1: address of devino return |
| 77 | */ |
| 78 | ENTRY(sun4v_ncs_qhandle_to_devino) |
| 79 | mov %o1, %o2 |
| 80 | mov HV_FAST_NCS_QHANDLE_TO_DEVINO, %o5 |
| 81 | ta HV_FAST_TRAP |
| 82 | stx %o1, [%o2] |
| 83 | retl |
| 84 | nop |
| 85 | ENDPROC(sun4v_ncs_qhandle_to_devino) |
| 86 | |
| 87 | /* %o0: queue handle |
| 88 | * %o1: new head offset |
| 89 | */ |
| 90 | ENTRY(sun4v_ncs_sethead_marker) |
| 91 | mov HV_FAST_NCS_SETHEAD_MARKER, %o5 |
| 92 | ta HV_FAST_TRAP |
| 93 | retl |
| 94 | nop |
| 95 | ENDPROC(sun4v_ncs_sethead_marker) |
| 96 |
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