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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <mm/tlb.h> |
29 | #include <mm/tlb.h> |
- | 30 | #include <synch/spinlock.h> |
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- | 31 | #include <typedefs.h> |
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- | 32 | #include <arch/atomic.h> |
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- | 33 | #include <config.h> |
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30 | 34 | ||
- | 35 | #ifdef __SMP__ |
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- | 36 | static spinlock_t tlblock; |
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- | 37 | static volatile int tlb_shutdown_cnt; |
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- | 38 | ||
- | 39 | void tlb_init(void) |
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- | 40 | { |
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- | 41 | spinlock_initialize(&tlblock); |
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- | 42 | tlb_shutdown_cnt = 0; |
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- | 43 | } |
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- | 44 | ||
- | 45 | /* must be called with interrupts disabled */ |
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31 | void tlb_shutdown(void) |
46 | void tlb_shutdown_start(void) |
- | 47 | { |
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- | 48 | spinlock_lock(&tlblock); |
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- | 49 | tlb_shutdown_ipi_send(); |
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- | 50 | ||
- | 51 | while (tlb_shutdown_cnt < config.cpu_active - 1) |
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- | 52 | ; |
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- | 53 | ||
- | 54 | tlb_shutdown_cnt = 0; |
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- | 55 | } |
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- | 56 | ||
- | 57 | void tlb_shutdown_finalize(void) |
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- | 58 | { |
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- | 59 | spinlock_unlock(&tlblock); |
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- | 60 | } |
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- | 61 | ||
- | 62 | void tlb_shutdown_ipi_recv(void) |
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32 | { |
63 | { |
33 | /* TODO: implement tlb_shutdown */ |
64 | atomic_inc((int *) &tlb_shutdown_cnt); |
- | 65 | spinlock_lock(&tlblock); |
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- | 66 | spinlock_unlock(&tlblock); |
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- | 67 | tlb_invalidate(0); /* TODO: use valid ASID */ |
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34 | } |
68 | } |
- | 69 | #endif /* __SMP__ */ |