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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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 /** @addtogroup ia32  
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/** @addtogroup ia32   
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 * @{
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 * @{
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 */
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 */
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/**
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/** @file
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 * @file
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 * @brief   i8254 chip driver.
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 *
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 * Low level time functions.
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 */
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 */
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#include <arch/types.h>
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#include <arch/types.h>
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#include <time/clock.h>
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#include <time/clock.h>
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#include <time/delay.h>
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#include <time/delay.h>
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#include <arch/cpuid.h>
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#include <arch/cpuid.h>
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#include <arch.h>
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#include <arch.h>
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#include <time/delay.h>
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#include <time/delay.h>
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#include <interrupt.h>
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#include <interrupt.h>
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/*
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 * i8254 chip driver.
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 * Low level time functions.
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 */
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#define CLK_PORT1   0x40
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#define CLK_PORT1   0x40
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#define CLK_PORT4   0x43
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#define CLK_PORT4   0x43
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#define CLK_CONST   1193180
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#define CLK_CONST   1193180
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#define MAGIC_NUMBER    1194
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#define MAGIC_NUMBER    1194
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static void i8254_interrupt(int n, istate_t *istate);
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static void i8254_interrupt(int n, istate_t *istate);
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{
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{
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    trap_virtual_eoi();
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    trap_virtual_eoi();
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    clock();
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    clock();
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}
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}
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 /** @}
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/** @}
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 */
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 */
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