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Add some convenience functions for accessing device memory.

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Add a DDB command to allow access to inb/inw/inl from the debugger.
This commit is contained in:
Doug Rabson 1998-07-22 08:33:30 +00:00
parent 53db2ca0b6
commit ec0bebbce7
1 changed files with 88 additions and 2 deletions
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90
sys/alpha/pci/pcibus.c
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@ -23,7 +23,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: pcibus.c,v 1.1 1998/06/10 10:55:37 dfr Exp $
* $Id: pcibus.c,v 1.2 1998/07/12 16:16:20 dfr Exp $
*
*/
@ -36,6 +36,7 @@
#include <pci/pcivar.h>
#include <machine/chipset.h>
#include <machine/cpuconf.h>
static int cfgmech;
static int devmax;
@ -100,7 +101,8 @@ intr_create(void *dev_instance, int irq, inthand2_t handler, void *arg,
device_t pcib = chipset.bridge;
if (pcib)
return BUS_CREATE_INTR(pcib, pcib,
irq, (driver_intr_t*) handler, arg);
0x900 + (irq << 4),
(driver_intr_t*) handler, arg);
else
return 0;
}
@ -114,3 +116,87 @@ intr_connect(struct intrec *idesc)
else
return EINVAL;
}
void
alpha_platform_assign_pciintr(pcicfgregs *cfg)
{
if(platform.pci_intr_map)
platform.pci_intr_map((void *)cfg);
}
void
memcpy_fromio(void *d, u_int32_t s, size_t size)
{
char *cp = d;
while (size--)
*cp++ = readb(s++);
}
void
memcpy_toio(u_int32_t d, void *s, size_t size)
{
char *cp = s;
while (size--)
writeb(d++, *cp++);
}
void
memset_io(u_int32_t d, int val, size_t size)
{
while (size--)
writeb(d++, val);
}
#include "opt_ddb.h"
#ifdef DDB
#include <ddb/ddb.h>
DB_COMMAND(in, db_in)
{
int c;
int size;
u_int32_t val;
if (!have_addr)
return;
size = -1;
while (c = *modif++) {
switch (c) {
case 'b':
size = 1;
break;
case 'w':
size = 2;
break;
case 'l':
size = 4;
break;
}
}
if (size < 0) {
db_printf("bad size\n");
return;
}
if (count <= 0) count = 1;
while (--count >= 0) {
db_printf("%08x:\t", addr);
switch (size) {
case 1:
db_printf("%02x\n", inb(addr));
break;
case 2:
db_printf("%04x\n", inw(addr));
break;
case 4:
db_printf("%08x\n", inl(addr));
break;
}
}
}
#endif