Rev 1 | Rev 6 | 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> |
||
| 5 | jermar | 30 | #include <synch/spinlock.h> |
| 31 | #include <typedefs.h> |
||
| 32 | #include <arch/atomic.h> |
||
| 33 | #include <config.h> |
||
| 1 | jermar | 34 | |
| 5 | jermar | 35 | #ifdef __SMP__ |
| 36 | static spinlock_t tlblock; |
||
| 37 | static volatile int tlb_shutdown_cnt; |
||
| 38 | |||
| 39 | void tlb_init(void) |
||
| 1 | jermar | 40 | { |
| 5 | jermar | 41 | spinlock_initialize(&tlblock); |
| 42 | tlb_shutdown_cnt = 0; |
||
| 1 | jermar | 43 | } |
| 5 | jermar | 44 | |
| 45 | /* must be called with interrupts disabled */ |
||
| 46 | void tlb_shutdown_start(void) |
||
| 47 | { |
||
| 48 | spinlock_lock(&tlblock); |
||
| 49 | tlb_shutdown_ipi_send(); |
||
| 50 | |||
| 51 | while (tlb_shutdown_cnt < config.cpu_active - 1) |
||
| 52 | ; |
||
| 53 | |||
| 54 | tlb_shutdown_cnt = 0; |
||
| 55 | } |
||
| 56 | |||
| 57 | void tlb_shutdown_finalize(void) |
||
| 58 | { |
||
| 59 | spinlock_unlock(&tlblock); |
||
| 60 | } |
||
| 61 | |||
| 62 | void tlb_shutdown_ipi_recv(void) |
||
| 63 | { |
||
| 64 | atomic_inc((int *) &tlb_shutdown_cnt); |
||
| 65 | spinlock_lock(&tlblock); |
||
| 66 | spinlock_unlock(&tlblock); |
||
| 67 | tlb_invalidate(0); /* TODO: use valid ASID */ |
||
| 68 | } |
||
| 69 | #endif /* __SMP__ */ |