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1 | /* |
2 | * ========== Copyright Header Begin ========================================== | |
3 | * | |
4 | * Hypervisor Software File: ldc.h | |
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 | #ifndef _PLATFORM_LDC_H | |
50 | #define _PLATFORM_LDC_H | |
51 | ||
52 | #pragma ident "@(#)ldc.h 1.2 07/05/04 SMI" | |
53 | ||
54 | #ifdef __cplusplus | |
55 | extern "C" { | |
56 | #endif | |
57 | ||
58 | /* | |
59 | * Location of the SRAM queues | |
60 | * XXX - Eventually, we probably want to read this out of the SRAM. | |
61 | * For now it is hardcoded between HV and vbsc. | |
62 | */ | |
63 | #define LDC_SRAM_CHANNEL_TXBASE FPGA_BASE + FPGA_SRAM_BASE + 0x4e0 | |
64 | #define LDC_SRAM_CHANNEL_RXBASE FPGA_BASE + FPGA_SRAM_BASE + 0x1c40 | |
65 | ||
66 | /* | |
67 | * FPGA mailbox for LDC | |
68 | */ | |
69 | #define FPGA_LDCIN_BASE FPGA_Q1IN_BASE | |
70 | #define FPGA_LDCOUT_BASE FPGA_Q1OUT_BASE | |
71 | ||
72 | /* | |
73 | * FPGA Interrupts for LDC | |
74 | */ | |
75 | #define IRQ_LDC_IN IRQ1_QUEUE_IN | |
76 | #define IRQ_LDC_OUT IRQ1_QUEUE_OUT | |
77 | ||
78 | /* | |
79 | * Send the SP an interrupt on the LDC IN channel. | |
80 | * | |
81 | * target_endpt target endpoint, preserved (unused) | |
82 | * tmp1, tmp2 clobbered | |
83 | * status_bit interrupt type | |
84 | */ | |
85 | /* BEGIN CSTYLED */ | |
86 | #define LDC_SEND_SP_INTR(target_endpt, tmp1, tmp2, status_bit) \ | |
87 | .pushlocals; \ | |
88 | ROOT_STRUCT(tmp1); \ | |
89 | mov CONFIG_FPGA_STATUS_LOCK, tmp2; \ | |
90 | add tmp1, tmp2, tmp1; /* address of lock */ \ | |
91 | 1: mov 1, tmp2; \ | |
92 | casx [tmp1], %g0, tmp2; /* if zero, take lock */ \ | |
93 | brnz,pn tmp2, 1b; \ | |
94 | nop; \ | |
95 | MEMBAR_ENTER; /* we own the lock here */ \ | |
96 | setx FPGA_LDCIN_BASE, tmp1, tmp2; \ | |
97 | ldub [tmp2 + FPGA_Q_STATUS], tmp1; /* read... */ \ | |
98 | or tmp1, status_bit, tmp1; /* modify.. */ \ | |
99 | stub tmp1, [tmp2 + FPGA_Q_STATUS]; /* write */ \ | |
100 | ROOT_STRUCT(tmp1); \ | |
101 | mov CONFIG_FPGA_STATUS_LOCK, tmp2; \ | |
102 | add tmp1, tmp2, tmp1; /* address of lock */ \ | |
103 | MEMBAR_EXIT; \ | |
104 | stx %g0, [tmp1]; /* release the lock */ \ | |
105 | .poplocals | |
106 | /* END CSTYLED */ | |
107 | ||
108 | #ifdef __cplusplus | |
109 | } | |
110 | #endif | |
111 | ||
112 | #endif /* _PLATFORM_LDC_H */ |