Hifn7751 based cards may stop working on certain motherboards due to
DMA errors.

Apply by doing:
	cd /usr/src
	patch -p0 < 004_hifn.patch
And then rebuild your kernel.

Index: sys/dev/pci/hifn7751.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/hifn7751.c,v
retrieving revision 1.103
retrieving revision 1.104
diff -u -r1.103 -r1.104
--- sys/dev/pci/hifn7751.c	2001/09/06 03:31:34	1.103
+++ sys/dev/pci/hifn7751.c	2001/11/04 18:31:42	1.104
@@ -154,6 +154,9 @@
 	int rseg;
 	caddr_t kva;
 
+	sc->sc_pci_pc = pa->pa_pc;
+	sc->sc_pci_tag = pa->pa_tag;
+
 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_HIFN &&
 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_HIFN_7951)
 		sc->sc_flags = HIFN_HAS_RNG | HIFN_HAS_PUBLIC;
@@ -185,6 +188,10 @@
 		goto fail_io0;
 	}
 
+	cmd = pci_conf_read(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_RETRY_TIMEOUT);
+	cmd &= 0xffff0000;
+	pci_conf_write(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_RETRY_TIMEOUT, cmd);
+
 	sc->sc_dmat = pa->pa_dmat;
 	if (bus_dmamap_create(sc->sc_dmat, sizeof(*sc->sc_dma), 1,
 	    sizeof(*sc->sc_dma), 0, BUS_DMA_NOWAIT, &sc->sc_dmamap)) {
@@ -438,6 +445,8 @@
 	struct hifn_softc *sc;
 	int full;
 {
+	u_int32_t reg;
+
 	/*
 	 * Set polling in the DMA configuration register to zero.  0x7 avoids
 	 * resetting the board and zeros out the other fields.
@@ -468,6 +477,10 @@
 	    HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
 
 	hifn_puc_wait(sc);
+
+	reg = pci_conf_read(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_RETRY_TIMEOUT);
+	reg &= 0xffff0000;
+	pci_conf_write(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_RETRY_TIMEOUT, reg);
 }
 
 u_int32_t
@@ -956,8 +969,13 @@
 	struct hifn_softc *sc;
 {
 	struct hifn_dma *dma = sc->sc_dma;
+	u_int32_t reg;
 	int i;
 
+	reg = pci_conf_read(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_RETRY_TIMEOUT);
+	reg &= 0xffff0000;
+	pci_conf_write(sc->sc_pci_pc, sc->sc_pci_tag, HIFN_RETRY_TIMEOUT, reg);
+
 	/* initialize static pointer values */
 	for (i = 0; i < HIFN_D_CMD_RSIZE; i++)
 		dma->cmdr[i].p = sc->sc_dmamap->dm_segs[0].ds_addr +
@@ -1539,6 +1557,7 @@
 	restart = dmacsr & (HIFN_DMACSR_C_ABORT | HIFN_DMACSR_S_ABORT |
 	    HIFN_DMACSR_D_ABORT | HIFN_DMACSR_R_ABORT);
 	if (restart) {
+		printf("%s: abort, resetting.\n");
 		hifnstats.hst_abort++;
 		hifn_abort(sc);
 		return (1);
Index: sys/dev/pci/hifn7751reg.h
===================================================================
RCS file: /cvs/src/sys/dev/pci/hifn7751reg.h,v
retrieving revision 1.30
retrieving revision 1.31
diff -u -r1.30 -r1.31
--- sys/dev/pci/hifn7751reg.h	2001/08/27 18:54:56	1.30
+++ sys/dev/pci/hifn7751reg.h	2001/11/04 18:31:42	1.31
@@ -35,7 +35,7 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #ifndef __HIFN_H__
-#define __HIFN_H__
+#define	__HIFN_H__
 
 #include <machine/endian.h>
 
@@ -43,8 +43,10 @@
  * Some PCI configuration space offset defines.  The names were made
  * identical to the names used by the Linux kernel.
  */
-#define HIFN_BAR0		(PCI_MAPREG_START + 0)	/* PUC register map */
-#define HIFN_BAR1		(PCI_MAPREG_START + 4)	/* DMA register map */
+#define	HIFN_BAR0		(PCI_MAPREG_START + 0)	/* PUC register map */
+#define	HIFN_BAR1		(PCI_MAPREG_START + 4)	/* DMA register map */
+#define	HIFN_RETRY_TIMEOUT	0x40
+#define	HIFN_TRDY_TIMEOUT	0x41
 
 /*
  * The values below should multiple of 4 -- and be large enough to handle
Index: sys/dev/pci/hifn7751var.h
===================================================================
RCS file: /cvs/src/sys/dev/pci/hifn7751var.h,v
retrieving revision 1.37
retrieving revision 1.38
diff -u -r1.37 -r1.38
--- sys/dev/pci/hifn7751var.h	2001/08/28 21:40:54	1.37
+++ sys/dev/pci/hifn7751var.h	2001/11/04 18:31:42	1.38
@@ -153,6 +153,8 @@
 	int sc_rnghz;
 	int sc_c_busy, sc_s_busy, sc_d_busy, sc_r_busy, sc_active;
 	struct hifn_session sc_sessions[2048];
+	pci_chipset_tag_t sc_pci_pc;
+	pcitag_t sc_pci_tag;
 };
 
 #define	WRITE_REG_0(sc,reg,val) \