Rev 6 | Rev 11 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
| 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 | #include <mm/tlb.h> |
||
| 7 | jermar | 30 | #include <smp/ipi.h> |
| 5 | jermar | 31 | #include <synch/spinlock.h> |
| 32 | #include <typedefs.h> |
||
| 33 | #include <arch/atomic.h> |
||
| 7 | jermar | 34 | #include <arch/interrupt.h> |
| 5 | jermar | 35 | #include <config.h> |
| 1 | jermar | 36 | |
| 5 | jermar | 37 | #ifdef __SMP__ |
| 38 | static spinlock_t tlblock; |
||
| 6 | jermar | 39 | static volatile int tlb_shootdown_cnt; |
| 5 | jermar | 40 | |
| 41 | void tlb_init(void) |
||
| 1 | jermar | 42 | { |
| 5 | jermar | 43 | spinlock_initialize(&tlblock); |
| 6 | jermar | 44 | tlb_shootdown_cnt = 0; |
| 1 | jermar | 45 | } |
| 5 | jermar | 46 | |
| 47 | /* must be called with interrupts disabled */ |
||
| 6 | jermar | 48 | void tlb_shootdown_start(void) |
| 5 | jermar | 49 | { |
| 50 | spinlock_lock(&tlblock); |
||
| 6 | jermar | 51 | tlb_shootdown_ipi_send(); |
| 5 | jermar | 52 | |
| 6 | jermar | 53 | while (tlb_shootdown_cnt < config.cpu_active - 1) |
| 5 | jermar | 54 | ; |
| 55 | |||
| 6 | jermar | 56 | tlb_shootdown_cnt = 0; |
| 5 | jermar | 57 | } |
| 58 | |||
| 6 | jermar | 59 | void tlb_shootdown_finalize(void) |
| 5 | jermar | 60 | { |
| 61 | spinlock_unlock(&tlblock); |
||
| 62 | } |
||
| 63 | |||
| 7 | jermar | 64 | void tlb_shootdown_ipi_send(void) |
| 65 | { |
||
| 66 | ipi_broadcast(VECTOR_TLB_SHOOTDOWN_IPI); |
||
| 67 | } |
||
| 68 | |||
| 6 | jermar | 69 | void tlb_shootdown_ipi_recv(void) |
| 5 | jermar | 70 | { |
| 6 | jermar | 71 | atomic_inc((int *) &tlb_shootdown_cnt); |
| 5 | jermar | 72 | spinlock_lock(&tlblock); |
| 73 | spinlock_unlock(&tlblock); |
||
| 74 | tlb_invalidate(0); /* TODO: use valid ASID */ |
||
| 75 | } |
||
| 76 | #endif /* __SMP__ */ |