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); |
} |
|
/** @} |
*/ |