0,0 → 1,84 |
/* |
* 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 sparc64proc |
* @{ |
*/ |
/** @file |
*/ |
|
#include <proc/scheduler.h> |
#include <proc/thread.h> |
#include <arch.h> |
#include <arch/mm/tlb.h> |
#include <arch/mm/page.h> |
#include <config.h> |
#include <align.h> |
|
/** Perform sparc64 specific tasks needed before the new task is run. */ |
void before_task_runs_arch(void) |
{ |
} |
|
/** Ensure that thread's kernel stack is locked in TLB. */ |
void before_thread_runs_arch(void) |
{ |
__address base; |
|
base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH); |
|
if ((__address) THREAD->kstack < base || (__address) THREAD->kstack > base + (1<<KERNEL_PAGE_WIDTH)) { |
/* |
* Kernel stack of this thread is not locked in DTLB. |
* First, make sure it is not mapped already. |
* If not, create a locked mapping for it. |
*/ |
dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (__address) THREAD->kstack); |
dtlb_insert_mapping((__address) THREAD->kstack, KA2PA(THREAD->kstack), PAGESIZE_8K, true, true); |
} |
} |
|
/** Unlock thread's stack from TLB, if necessary. */ |
void after_thread_ran_arch(void) |
{ |
__address base; |
|
base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH); |
|
if ((__address) THREAD->kstack < base || (__address) THREAD->kstack > base + (1<<KERNEL_PAGE_WIDTH)) { |
/* |
* Kernel stack of this thread is locked in DTLB. |
* Destroy the mapping. |
*/ |
dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (__address) THREAD->kstack); |
} |
} |
|
/** @} |
*/ |
|