| 0,0 → 1,123 |
|---|
| /* |
| * Copyright (c) 2006 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup sparc64 |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <smp/ipi.h> |
| #include <cpu.h> |
| #include <config.h> |
| #include <interrupt.h> |
| #include <arch/asm.h> |
| #include <arch/cpu.h> |
| #include <arch/sun4v/hypercall.h> |
| #include <arch/sun4v/ipi.h> |
| |
| #define IPI_MESSAGE_SIZE 8 |
| |
| static uint64_t data[MAX_NUM_STRANDS][IPI_MESSAGE_SIZE] |
| __attribute__ ((aligned (64))); |
| |
| static uint16_t ipi_cpu_list[MAX_NUM_STRANDS][MAX_NUM_STRANDS]; |
| |
| /** |
| * Sends an inter-processor interrupt to all virtual processors whose IDs are |
| * listed in the list. |
| * |
| * @param func address of the function to be invoked on the recipient |
| * @param cpu_list list of CPU IDs (16-bit identifiers) of the recipients |
| * @param list_size number of recipients (number of valid cpu_list entries) |
| * |
| * @return error code returned by the CPU_MONDO_SEND hypercall |
| */ |
| uint64_t ipi_brodcast_to(void (*func)(void), uint16_t cpu_list[MAX_NUM_STRANDS], |
| uint64_t list_size) { |
| |
| data[CPU->arch.id][0] = (uint64_t) func; |
| |
| unsigned int i; |
| for (i = 0; i < list_size; i++) { |
| ipi_cpu_list[CPU->arch.id][i] = cpu_list[i]; |
| } |
| |
| return __hypercall_fast3(CPU_MONDO_SEND, list_size, |
| KA2PA(ipi_cpu_list[CPU->arch.id]), KA2PA(data[CPU->arch.id])); |
| } |
| |
| /** |
| * Send an inter-processor interrupt to a particular CPU. |
| * |
| * @param func address of the function to be invoked on the recipient |
| * @param cpu_is CPU ID (16-bit identifier) of the recipient |
| * |
| * @return error code returned by the CPU_MONDO_SEND hypercall |
| */ |
| uint64_t ipi_unicast_to(void (*func)(void), uint16_t cpu_id) { |
| ipi_cpu_list[CPU->arch.id][0] = cpu_id; |
| return ipi_brodcast_to(func, ipi_cpu_list[CPU->arch.id], 1); |
| } |
| |
| /* |
| * Deliver IPI to all processors except the current one. |
| * |
| * We assume that interrupts are disabled. |
| * |
| * @param ipi IPI number. |
| */ |
| void ipi_broadcast_arch(int ipi) |
| { |
| void (* func)(void); |
| |
| switch (ipi) { |
| case IPI_TLB_SHOOTDOWN: |
| func = tlb_shootdown_ipi_recv; |
| break; |
| default: |
| panic("Unknown IPI (%d).\n", ipi); |
| break; |
| } |
| |
| unsigned int i; |
| unsigned idx = 0; |
| for (i = 0; i < config.cpu_active; i++) { |
| if (&cpus[i] == CPU) { |
| continue; |
| } |
| |
| ipi_cpu_list[CPU->id][idx] = (uint16_t) cpus[i].id; |
| idx++; |
| } |
| |
| ipi_brodcast_to(func, ipi_cpu_list[CPU->arch.id], idx); |
| } |
| |
| /** @} |
| */ |