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Code Issues Releases Activity

Add macros for accessing device memory.

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This commit is contained in:
Doug Rabson 1998-08-17 08:57:05 +00:00
parent 744857bc1c
commit e31fa854a0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=38392
2 changed files with 18 additions and 2 deletions
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10
sys/amd64/include/cpufunc.h
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cpufunc.h,v 1.79 1998/05/17 18:53:08 tegge Exp $
* $Id: cpufunc.h,v 1.80 1998/07/11 04:58:25 bde Exp $
*/
/*
@ -49,6 +49,14 @@
extern int tlb_flush_count;
#endif
#define readb(va) (*(volatile u_int8_t *) (va))
#define readw(va) (*(volatile u_int16_t *) (va))
#define readl(va) (*(volatile u_int32_t *) (va))
#define writeb(va, d) (*(volatile u_int8_t *) (va) = (d))
#define writew(va, d) (*(volatile u_int16_t *) (va) = (d))
#define writel(va, d) (*(volatile u_int32_t *) (va) = (d))
#ifdef __GNUC__
static __inline void

10
sys/i386/include/cpufunc.h
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cpufunc.h,v 1.79 1998/05/17 18:53:08 tegge Exp $
* $Id: cpufunc.h,v 1.80 1998/07/11 04:58:25 bde Exp $
*/
/*
@ -49,6 +49,14 @@
extern int tlb_flush_count;
#endif
#define readb(va) (*(volatile u_int8_t *) (va))
#define readw(va) (*(volatile u_int16_t *) (va))
#define readl(va) (*(volatile u_int32_t *) (va))
#define writeb(va, d) (*(volatile u_int8_t *) (va) = (d))
#define writew(va, d) (*(volatile u_int16_t *) (va) = (d))
#define writel(va, d) (*(volatile u_int32_t *) (va) = (d))
#ifdef __GNUC__
static __inline void