| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| David S. Miller | 0a625fd2 | 2010-05-19 14:14:04 +1000 | [diff] [blame] | 2 | /* n2_asm.S: Hypervisor calls for NCS support. |
| 3 | * |
| 4 | * Copyright (C) 2009 David S. Miller <davem@davemloft.net> |
| 5 | */ |
| 6 | |
| 7 | #include <linux/linkage.h> |
| 8 | #include <asm/hypervisor.h> |
| 9 | #include "n2_core.h" |
| 10 | |
| 11 | /* o0: queue type |
| 12 | * o1: RA of queue |
| 13 | * o2: num entries in queue |
| 14 | * o3: address of queue handle return |
| 15 | */ |
| 16 | ENTRY(sun4v_ncs_qconf) |
| 17 | mov HV_FAST_NCS_QCONF, %o5 |
| 18 | ta HV_FAST_TRAP |
| 19 | stx %o1, [%o3] |
| 20 | retl |
| 21 | nop |
| 22 | ENDPROC(sun4v_ncs_qconf) |
| 23 | |
| 24 | /* %o0: queue handle |
| 25 | * %o1: address of queue type return |
| 26 | * %o2: address of queue base address return |
| 27 | * %o3: address of queue num entries return |
| 28 | */ |
| 29 | ENTRY(sun4v_ncs_qinfo) |
| 30 | mov %o1, %g1 |
| 31 | mov %o2, %g2 |
| 32 | mov %o3, %g3 |
| 33 | mov HV_FAST_NCS_QINFO, %o5 |
| 34 | ta HV_FAST_TRAP |
| 35 | stx %o1, [%g1] |
| 36 | stx %o2, [%g2] |
| 37 | stx %o3, [%g3] |
| 38 | retl |
| 39 | nop |
| 40 | ENDPROC(sun4v_ncs_qinfo) |
| 41 | |
| 42 | /* %o0: queue handle |
| 43 | * %o1: address of head offset return |
| 44 | */ |
| 45 | ENTRY(sun4v_ncs_gethead) |
| 46 | mov %o1, %o2 |
| 47 | mov HV_FAST_NCS_GETHEAD, %o5 |
| 48 | ta HV_FAST_TRAP |
| 49 | stx %o1, [%o2] |
| 50 | retl |
| 51 | nop |
| 52 | ENDPROC(sun4v_ncs_gethead) |
| 53 | |
| 54 | /* %o0: queue handle |
| 55 | * %o1: address of tail offset return |
| 56 | */ |
| 57 | ENTRY(sun4v_ncs_gettail) |
| 58 | mov %o1, %o2 |
| 59 | mov HV_FAST_NCS_GETTAIL, %o5 |
| 60 | ta HV_FAST_TRAP |
| 61 | stx %o1, [%o2] |
| 62 | retl |
| 63 | nop |
| 64 | ENDPROC(sun4v_ncs_gettail) |
| 65 | |
| 66 | /* %o0: queue handle |
| 67 | * %o1: new tail offset |
| 68 | */ |
| 69 | ENTRY(sun4v_ncs_settail) |
| 70 | mov HV_FAST_NCS_SETTAIL, %o5 |
| 71 | ta HV_FAST_TRAP |
| 72 | retl |
| 73 | nop |
| 74 | ENDPROC(sun4v_ncs_settail) |
| 75 | |
| 76 | /* %o0: queue handle |
| 77 | * %o1: address of devino return |
| 78 | */ |
| 79 | ENTRY(sun4v_ncs_qhandle_to_devino) |
| 80 | mov %o1, %o2 |
| 81 | mov HV_FAST_NCS_QHANDLE_TO_DEVINO, %o5 |
| 82 | ta HV_FAST_TRAP |
| 83 | stx %o1, [%o2] |
| 84 | retl |
| 85 | nop |
| 86 | ENDPROC(sun4v_ncs_qhandle_to_devino) |
| 87 | |
| 88 | /* %o0: queue handle |
| 89 | * %o1: new head offset |
| 90 | */ |
| 91 | ENTRY(sun4v_ncs_sethead_marker) |
| 92 | mov HV_FAST_NCS_SETHEAD_MARKER, %o5 |
| 93 | ta HV_FAST_TRAP |
| 94 | retl |
| 95 | nop |
| 96 | ENDPROC(sun4v_ncs_sethead_marker) |