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check if eisa card exists before tromping on dma

This commit is contained in:
deraadt 1994-07-21 02:51:53 +00:00
parent 47b43066ee
commit 3013b3fdbc
4 changed files with 30 additions and 4 deletions
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11
sys/arch/i386/isa/if_ep.c
View File

@ -27,7 +27,7 @@
* (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: if_ep.c,v 1.42 1994/07/01 23:08:11 deraadt Exp $
* $Id: if_ep.c,v 1.43 1994/07/21 02:51:53 deraadt Exp $
*/
#include "bpfilter.h"
@ -160,6 +160,7 @@ epprobe(parent, self, aux)
static int firsttime;
int slot, port, i;
u_short k, k2;
u_char b1, b2;
if (firsttime==0) {
firsttime = 1;
@ -167,6 +168,14 @@ epprobe(parent, self, aux)
/* find all EISA cards */
for (slot = 1; slot < 8; slot++) {
port = 0x1000 * slot;
b1 = inb(port + 0xc80);
b2 = inb(port + 0xc81);
/* XXX no card version checking performed! */
if (CHAR1(b1, b2) != 'T' || CHAR2(b1, b2) != 'C' ||
CHAR3(b1, b2) != 'M')
continue;
outw(port + EP_COMMAND, GLOBAL_RESET);
delay(1000);
if (inw(port + EP_W0_MFG_ID) != MFG_ID)

6
sys/arch/i386/isa/if_epreg.h
View File

@ -21,7 +21,7 @@
* (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: if_epreg.h,v 1.5 1994/07/01 23:08:15 deraadt Exp $
* $Id: if_epreg.h,v 1.6 1994/07/21 02:51:58 deraadt Exp $
*/
/*
@ -286,3 +286,7 @@
#define ENABLE_UTP 0xc0
#define DISABLE_UTP 0x0
#define RX_BYTES_MASK (u_short) (0x07ff)
#define CHAR1(b1,b2) (((b1>>2) & 0x1f) | '@')
#define CHAR2(b1,b2) (((b1<<3) & 0x18) | ((b2>>5) & 0x07) | '@')
#define CHAR3(b1,b2) ((b2 & 0x1f) | '@')

11
sys/dev/isa/if_ep.c
View File

@ -27,7 +27,7 @@
* (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: if_ep.c,v 1.42 1994/07/01 23:08:11 deraadt Exp $
* $Id: if_ep.c,v 1.43 1994/07/21 02:51:53 deraadt Exp $
*/
#include "bpfilter.h"
@ -160,6 +160,7 @@ epprobe(parent, self, aux)
static int firsttime;
int slot, port, i;
u_short k, k2;
u_char b1, b2;
if (firsttime==0) {
firsttime = 1;
@ -167,6 +168,14 @@ epprobe(parent, self, aux)
/* find all EISA cards */
for (slot = 1; slot < 8; slot++) {
port = 0x1000 * slot;
b1 = inb(port + 0xc80);
b2 = inb(port + 0xc81);
/* XXX no card version checking performed! */
if (CHAR1(b1, b2) != 'T' || CHAR2(b1, b2) != 'C' ||
CHAR3(b1, b2) != 'M')
continue;
outw(port + EP_COMMAND, GLOBAL_RESET);
delay(1000);
if (inw(port + EP_W0_MFG_ID) != MFG_ID)

6
sys/dev/isa/if_epreg.h
View File

@ -21,7 +21,7 @@
* (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: if_epreg.h,v 1.5 1994/07/01 23:08:15 deraadt Exp $
* $Id: if_epreg.h,v 1.6 1994/07/21 02:51:58 deraadt Exp $
*/
/*
@ -286,3 +286,7 @@
#define ENABLE_UTP 0xc0
#define DISABLE_UTP 0x0
#define RX_BYTES_MASK (u_short) (0x07ff)
#define CHAR1(b1,b2) (((b1>>2) & 0x1f) | '@')
#define CHAR2(b1,b2) (((b1<<3) & 0x18) | ((b2>>5) & 0x07) | '@')
#define CHAR3(b1,b2) ((b2 & 0x1f) | '@')