projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== | |
| 3 | * | |
| 4 | * Hypervisor Software File: hvctl.s | |
| 5 | * | |
| 6 | * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
| 7 | * | |
| 8 | * - Do no alter or remove copyright notices | |
| 9 | * | |
| 10 | * - Redistribution and use of this software in source and binary forms, with | |
| 11 | * or without modification, are permitted provided that the following | |
| 12 | * conditions are met: | |
| 13 | * | |
| 14 | * - Redistribution of source code must retain the above copyright notice, | |
| 15 | * this list of conditions and the following disclaimer. | |
| 16 | * | |
| 17 | * - Redistribution in binary form must reproduce the above copyright notice, | |
| 18 | * this list of conditions and the following disclaimer in the | |
| 19 | * documentation and/or other materials provided with the distribution. | |
| 20 | * | |
| 21 | * Neither the name of Sun Microsystems, Inc. or the names of contributors | |
| 22 | * may be used to endorse or promote products derived from this software | |
| 23 | * without specific prior written permission. | |
| 24 | * | |
| 25 | * This software is provided "AS IS," without a warranty of any kind. | |
| 26 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
| 27 | * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
| 28 | * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
| 29 | * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
| 30 | * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
| 31 | * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
| 32 | * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
| 33 | * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
| 34 | * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
| 35 | * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
| 36 | * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
| 37 | * | |
| 38 | * You acknowledge that this software is not designed, licensed or | |
| 39 | * intended for use in the design, construction, operation or maintenance of | |
| 40 | * any nuclear facility. | |
| 41 | * | |
| 42 | * ========== Copyright Header End ============================================ | |
| 43 | */ | |
| 44 | /* | |
| 45 | * Copyright 2007 Sun Microsystems, Inc. All rights reserved. | |
| 46 | * Use is subject to license terms. | |
| 47 | */ | |
| 48 | ||
| 49 | .ident "@(#)hvctl.s 1.5 07/05/03 SMI" | |
| 50 | ||
| 51 | /* | |
| 52 | * Hypervisor control interface | |
| 53 | */ | |
| 54 | ||
| 55 | #include <config.h> | |
| 56 | #include <offsets.h> | |
| 57 | #include <hvctl.h> | |
| 58 | #include <vdev_intr.h> | |
| 59 | #include <guest.h> | |
| 60 | #include <strand.h> | |
| 61 | #include <vcpu.h> | |
| 62 | #include <abort.h> | |
| 63 | #include <util.h> | |
| 64 | #include <ldc.h> | |
| 65 | #include <debug.h> | |
| 66 | #include <sys/asm_linkage.h> | |
| 67 | #include <sys/htypes.h> | |
| 68 | #include <sparcv9/asi.h> | |
| 69 | #include <asi.h> | |
| 70 | #include <sun4v/queue.h> | |
| 71 | ||
| 72 | /* FIXME: fix the files where these #defs to be visible */ | |
| 73 | #define IVDR_THREAD 8 /* XXX */ | |
| 74 | ||
| 75 | ||
| 76 | /* | |
| 77 | * callback for hv control | |
| 78 | * | |
| 79 | * %g1 = callback arg (config struct) | |
| 80 | * %g2 = payload | |
| 81 | * %g3 = size | |
| 82 | * %g7 = return address | |
| 83 | */ | |
| 84 | ENTRY_NP(hvctl_svc_callback) | |
| 85 | ||
| 86 | #define HVLDC_RD_IDATA(pload, conf, idx, tmp) \ | |
| 87 | ldx [pload + (idx*8)], tmp ;\ | |
| 88 | stx tmp, [conf + (CONFIG_HVCTL_IBUF+(idx*8))] | |
| 89 | ||
| 90 | HVLDC_RD_IDATA(%g2, %g1, 0, %g3) ! load payload | |
| 91 | HVLDC_RD_IDATA(%g2, %g1, 1, %g3) | |
| 92 | HVLDC_RD_IDATA(%g2, %g1, 2, %g3) | |
| 93 | HVLDC_RD_IDATA(%g2, %g1, 3, %g3) | |
| 94 | HVLDC_RD_IDATA(%g2, %g1, 4, %g3) | |
| 95 | HVLDC_RD_IDATA(%g2, %g1, 5, %g3) | |
| 96 | HVLDC_RD_IDATA(%g2, %g1, 6, %g3) | |
| 97 | HVLDC_RD_IDATA(%g2, %g1, 7, %g3) | |
| 98 | ||
| 99 | STRAND_PUSH(%g7, %g2, %g3) | |
| 100 | ||
| 101 | HVCALL(vcpu_state_save) | |
| 102 | ||
| 103 | ! TODO: verify checksum match, drop packet on mismatch | |
| 104 | ||
| 105 | ! | |
| 106 | ! zero reply buffer | |
| 107 | ! | |
| 108 | ROOT_STRUCT(%g1) | |
| 109 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 0] | |
| 110 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 8] | |
| 111 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 16] | |
| 112 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 24] | |
| 113 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 32] | |
| 114 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 40] | |
| 115 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 48] | |
| 116 | stx %g0, [%g1 + CONFIG_HVCTL_OBUF + 56] | |
| 117 | ||
| 118 | wrpr %g0, 0, %tl | |
| 119 | wrpr %g0, 0, %gl | |
| 120 | HVCALL(setup_c_environ) | |
| 121 | call hv_control_pkt | |
| 122 | nop | |
| 123 | ||
| 124 | .try_again: | |
| 125 | CONFIG_STRUCT(%g3) | |
| 126 | add %g3, CONFIG_HVCTL_OBUF, %g2 | |
| 127 | ldx [%g3 + CONFIG_HVCTL_LDC], %g1 | |
| 128 | ||
| 129 | add %g3, CONFIG_HVCTL_LDC_LOCK, %g7 | |
| 130 | SPINLOCK_ENTER(%g7, %g4, %g5) | |
| 131 | ||
| 132 | ! call hv_ldc_send_pkt(hvldc_idx, bufptr) | |
| 133 | HVCALL(hv_ldc_send_pkt) | |
| 134 | ||
| 135 | CONFIG_STRUCT(%g3) | |
| 136 | add %g3, CONFIG_HVCTL_LDC_LOCK, %g7 | |
| 137 | SPINLOCK_EXIT(%g7) | |
| 138 | ||
| 139 | ! Busy wait if can't deliver ... | |
| 140 | ! FIXME: need a send queue instead. | |
| 141 | cmp %g1, EWOULDBLOCK | |
| 142 | be,pn %xcc, .try_again | |
| 143 | cmp %g1, ETOOMANY | |
| 144 | be,pn %xcc, .try_again | |
| 145 | nop | |
| 146 | ||
| 147 | HVCALL(vcpu_state_restore) | |
| 148 | ||
| 149 | STRAND_POP(%g7, %g2) | |
| 150 | ||
| 151 | HVRET | |
| 152 | SET_SIZE(hvctl_svc_callback) |