Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4638 | rimsky | 1 | /* |
| 2 | * Copyright (c) 2009 Pavel Rimsky |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | /** @addtogroup sparc64interrupt |
||
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 34 | |||
| 35 | #include <arch/interrupt.h> |
||
| 36 | #include <arch/trap/interrupt.h> |
||
| 37 | #include <arch/sparc64.h> |
||
| 38 | #include <arch/trap/interrupt.h> |
||
| 39 | #include <interrupt.h> |
||
| 40 | #include <ddi/irq.h> |
||
| 41 | #include <arch/types.h> |
||
| 42 | #include <debug.h> |
||
| 43 | #include <arch/asm.h> |
||
| 44 | #include <arch/barrier.h> |
||
| 45 | #include <print.h> |
||
| 46 | #include <arch.h> |
||
| 47 | #include <mm/tlb.h> |
||
| 48 | #include <config.h> |
||
| 49 | #include <synch/spinlock.h> |
||
| 50 | #include <arch/sun4v/hypercall.h> |
||
| 51 | |||
| 52 | /** number of uint64_t-s in one CPU mondo message */ |
||
| 53 | #define CPU_MONDO_ENTRY_SIZE 8 |
||
| 54 | |||
| 55 | /** number of entries (messages) in the CPU mondo queue */ |
||
| 56 | #define CPU_MONDO_NENTRIES 8 |
||
| 57 | |||
| 58 | /** number of uint64_t-s in the CPU mondo queue */ |
||
| 59 | #define CPU_MONDO_QUEUE_SIZE ((CPU_MONDO_NENTRIES) * (CPU_MONDO_ENTRY_SIZE)) |
||
| 60 | |||
| 61 | /** used to identify CPU mondo queue in the hypercall */ |
||
| 62 | #define CPU_MONDO_QUEUE_ID 0x3c |
||
| 63 | |||
| 64 | /** ASI for reading/writing CPU mondo head/tail registers */ |
||
| 65 | #define ASI_QUEUE 0x25 |
||
| 66 | |||
| 67 | /** VA for reading the CPU mondo tail */ |
||
| 68 | #define VA_CPU_MONDO_QUEUE_TAIL 0x3c8 |
||
| 69 | |||
| 70 | /** VA for reading/writing the CPU mondo head */ |
||
| 71 | #define VA_CPU_MONDO_QUEUE_HEAD 0x3c0 |
||
| 72 | |||
| 73 | /** |
||
| 74 | * array which contains CPU mondo queue for every CPU |
||
| 75 | */ |
||
| 76 | uint64_t cpu_mondo_queues[MAX_NUM_STRANDS][CPU_MONDO_QUEUE_SIZE] |
||
| 77 | __attribute__((aligned( |
||
| 78 | CPU_MONDO_QUEUE_SIZE * sizeof(uint64_t)))); |
||
| 79 | |||
| 80 | /** |
||
| 81 | * Initializes CPU mondo queue for the current CPU. |
||
| 82 | */ |
||
| 83 | void sun4v_ipi_init(void) |
||
| 84 | { |
||
| 85 | if (__hypercall_fast3( |
||
| 86 | CPU_QCONF, |
||
| 87 | CPU_MONDO_QUEUE_ID, |
||
| 88 | KA2PA(cpu_mondo_queues[CPU->id]), |
||
| 89 | CPU_MONDO_NENTRIES) != EOK) |
||
| 90 | panic("Initializing mondo queue failed on CPU %d.\n", |
||
| 91 | CPU->arch.id); |
||
| 92 | } |
||
| 93 | |||
| 94 | /** |
||
| 95 | * Handler of the CPU Mondo trap. Reads the message queue, updates the head |
||
| 96 | * register and processes the message (invokes a function call). |
||
| 97 | */ |
||
| 98 | void cpu_mondo(void) |
||
| 99 | { |
||
| 100 | unsigned int tail = asi_u64_read(ASI_QUEUE, VA_CPU_MONDO_QUEUE_TAIL); |
||
| 101 | unsigned int head = asi_u64_read(ASI_QUEUE, VA_CPU_MONDO_QUEUE_HEAD); |
||
| 102 | |||
| 103 | while (head != tail) { |
||
| 104 | |||
| 105 | uint64_t data1 = cpu_mondo_queues[CPU->id][0]; |
||
| 106 | |||
| 107 | head = (head + CPU_MONDO_ENTRY_SIZE * sizeof(uint64_t)) % |
||
| 108 | (CPU_MONDO_QUEUE_SIZE * sizeof(uint64_t)); |
||
| 109 | asi_u64_write(ASI_QUEUE, VA_CPU_MONDO_QUEUE_HEAD, head); |
||
| 110 | |||
| 111 | if (data1 == (uint64_t) tlb_shootdown_ipi_recv) { |
||
| 112 | ((void (*)(void)) data1)(); |
||
| 113 | } else { |
||
| 114 | printf("Spurious interrupt on %d, data = %lx.\n", |
||
| 115 | CPU->arch.id, data1); |
||
| 116 | } |
||
| 117 | |||
| 118 | } |
||
| 119 | |||
| 120 | } |
||
| 121 | |||
| 122 | /** @} |
||
| 123 | */ |