0,0 → 1,123 |
/* |
* Copyright (c) 2009 Pavel Rimsky |
* 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 sparc64interrupt |
* @{ |
*/ |
/** @file |
*/ |
|
#include <arch/interrupt.h> |
#include <arch/trap/interrupt.h> |
#include <arch/sparc64.h> |
#include <arch/trap/interrupt.h> |
#include <interrupt.h> |
#include <ddi/irq.h> |
#include <arch/types.h> |
#include <debug.h> |
#include <arch/asm.h> |
#include <arch/barrier.h> |
#include <print.h> |
#include <arch.h> |
#include <mm/tlb.h> |
#include <config.h> |
#include <synch/spinlock.h> |
#include <arch/sun4v/hypercall.h> |
|
/** number of uint64_t-s in one CPU mondo message */ |
#define CPU_MONDO_ENTRY_SIZE 8 |
|
/** number of entries (messages) in the CPU mondo queue */ |
#define CPU_MONDO_NENTRIES 8 |
|
/** number of uint64_t-s in the CPU mondo queue */ |
#define CPU_MONDO_QUEUE_SIZE ((CPU_MONDO_NENTRIES) * (CPU_MONDO_ENTRY_SIZE)) |
|
/** used to identify CPU mondo queue in the hypercall */ |
#define CPU_MONDO_QUEUE_ID 0x3c |
|
/** ASI for reading/writing CPU mondo head/tail registers */ |
#define ASI_QUEUE 0x25 |
|
/** VA for reading the CPU mondo tail */ |
#define VA_CPU_MONDO_QUEUE_TAIL 0x3c8 |
|
/** VA for reading/writing the CPU mondo head */ |
#define VA_CPU_MONDO_QUEUE_HEAD 0x3c0 |
|
/** |
* array which contains CPU mondo queue for every CPU |
*/ |
uint64_t cpu_mondo_queues[MAX_NUM_STRANDS][CPU_MONDO_QUEUE_SIZE] |
__attribute__((aligned( |
CPU_MONDO_QUEUE_SIZE * sizeof(uint64_t)))); |
|
/** |
* Initializes CPU mondo queue for the current CPU. |
*/ |
void sun4v_ipi_init(void) |
{ |
if (__hypercall_fast3( |
CPU_QCONF, |
CPU_MONDO_QUEUE_ID, |
KA2PA(cpu_mondo_queues[CPU->id]), |
CPU_MONDO_NENTRIES) != EOK) |
panic("Initializing mondo queue failed on CPU %d.\n", |
CPU->arch.id); |
} |
|
/** |
* Handler of the CPU Mondo trap. Reads the message queue, updates the head |
* register and processes the message (invokes a function call). |
*/ |
void cpu_mondo(void) |
{ |
unsigned int tail = asi_u64_read(ASI_QUEUE, VA_CPU_MONDO_QUEUE_TAIL); |
unsigned int head = asi_u64_read(ASI_QUEUE, VA_CPU_MONDO_QUEUE_HEAD); |
|
while (head != tail) { |
|
uint64_t data1 = cpu_mondo_queues[CPU->id][0]; |
|
head = (head + CPU_MONDO_ENTRY_SIZE * sizeof(uint64_t)) % |
(CPU_MONDO_QUEUE_SIZE * sizeof(uint64_t)); |
asi_u64_write(ASI_QUEUE, VA_CPU_MONDO_QUEUE_HEAD, head); |
|
if (data1 == (uint64_t) tlb_shootdown_ipi_recv) { |
((void (*)(void)) data1)(); |
} else { |
printf("Spurious interrupt on %d, data = %lx.\n", |
CPU->arch.id, data1); |
} |
|
} |
|
} |
|
/** @} |
*/ |