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| Rev | Author | Line No. | Line |
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| 4638 | rimsky | 1 | /* |
| 2 | * Copyright (c) 2006 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup sparc64 |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 35 | #include <smp/ipi.h> |
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| 36 | #include <cpu.h> |
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| 37 | #include <config.h> |
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| 38 | #include <interrupt.h> |
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| 39 | #include <arch/asm.h> |
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| 40 | #include <arch/cpu.h> |
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| 41 | #include <arch/sun4v/hypercall.h> |
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| 42 | #include <arch/sun4v/ipi.h> |
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| 43 | |||
| 44 | #define IPI_MESSAGE_SIZE 8 |
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| 45 | |||
| 46 | static uint64_t data[MAX_NUM_STRANDS][IPI_MESSAGE_SIZE] |
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| 47 | __attribute__ ((aligned (64))); |
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| 48 | |||
| 49 | static uint16_t ipi_cpu_list[MAX_NUM_STRANDS][MAX_NUM_STRANDS]; |
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| 50 | |||
| 51 | /** |
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| 52 | * Sends an inter-processor interrupt to all virtual processors whose IDs are |
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| 53 | * listed in the list. |
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| 54 | * |
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| 55 | * @param func address of the function to be invoked on the recipient |
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| 56 | * @param cpu_list list of CPU IDs (16-bit identifiers) of the recipients |
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| 57 | * @param list_size number of recipients (number of valid cpu_list entries) |
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| 58 | * |
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| 59 | * @return error code returned by the CPU_MONDO_SEND hypercall |
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| 60 | */ |
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| 61 | uint64_t ipi_brodcast_to(void (*func)(void), uint16_t cpu_list[MAX_NUM_STRANDS], |
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| 62 | uint64_t list_size) { |
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| 63 | |||
| 64 | data[CPU->arch.id][0] = (uint64_t) func; |
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| 65 | |||
| 66 | unsigned int i; |
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| 67 | for (i = 0; i < list_size; i++) { |
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| 68 | ipi_cpu_list[CPU->arch.id][i] = cpu_list[i]; |
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| 69 | } |
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| 70 | |||
| 71 | return __hypercall_fast3(CPU_MONDO_SEND, list_size, |
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| 72 | KA2PA(ipi_cpu_list[CPU->arch.id]), KA2PA(data[CPU->arch.id])); |
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| 73 | } |
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| 74 | |||
| 75 | /** |
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| 76 | * Send an inter-processor interrupt to a particular CPU. |
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| 77 | * |
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| 78 | * @param func address of the function to be invoked on the recipient |
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| 79 | * @param cpu_is CPU ID (16-bit identifier) of the recipient |
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| 80 | * |
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| 81 | * @return error code returned by the CPU_MONDO_SEND hypercall |
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| 82 | */ |
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| 83 | uint64_t ipi_unicast_to(void (*func)(void), uint16_t cpu_id) { |
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| 84 | ipi_cpu_list[CPU->arch.id][0] = cpu_id; |
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| 85 | return ipi_brodcast_to(func, ipi_cpu_list[CPU->arch.id], 1); |
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| 86 | } |
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| 87 | |||
| 88 | /* |
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| 89 | * Deliver IPI to all processors except the current one. |
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| 90 | * |
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| 91 | * We assume that interrupts are disabled. |
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| 92 | * |
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| 93 | * @param ipi IPI number. |
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| 94 | */ |
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| 95 | void ipi_broadcast_arch(int ipi) |
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| 96 | { |
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| 97 | void (* func)(void); |
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| 98 | |||
| 99 | switch (ipi) { |
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| 100 | case IPI_TLB_SHOOTDOWN: |
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| 101 | func = tlb_shootdown_ipi_recv; |
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| 102 | break; |
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| 103 | default: |
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| 104 | panic("Unknown IPI (%d).\n", ipi); |
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| 105 | break; |
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| 106 | } |
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| 107 | |||
| 108 | unsigned int i; |
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| 109 | unsigned idx = 0; |
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| 110 | for (i = 0; i < config.cpu_active; i++) { |
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| 111 | if (&cpus[i] == CPU) { |
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| 112 | continue; |
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| 113 | } |
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| 114 | |||
| 115 | ipi_cpu_list[CPU->id][idx] = (uint16_t) cpus[i].id; |
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| 116 | idx++; |
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| 117 | } |
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| 118 | |||
| 119 | ipi_brodcast_to(func, ipi_cpu_list[CPU->arch.id], idx); |
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| 120 | } |
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| 121 | |||
| 122 | /** @} |
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| 123 | */ |