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Add support for the AMD Am79c976 PCnet/PRO controller chip. For now 

this just involves adding the chip ID to the supported list: the PCnet/PRO
is compatible with the PCnet/FAST+ and friends and should "just work"
with this driver.

Also try to handle mbuf allocation failures in the receive handler
more gracefully.
This commit is contained in:
Bill Paul 2000-10-03 18:11:36 +00:00
parent c8c827cc94
commit e0b8bc252f
3 changed files with 12 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
share/man/man4/pcn.4
View File

@ -44,8 +44,8 @@
The
.Nm
driver provides support for PCI ethernet adapters and embedded
controllers based on the AMD PCnet/FAST, PCnet/FAST+ and PCnet/Home
ethernet controller chips.
controllers based on the AMD PCnet/FAST, PCnet/FAST+, PCnet/PRO
and PCnet/Home ethernet controller chips.
.Pp
The PCnet/PCI chips include a 100Mbps ethernet MAC and support
both a serial and MII-compliant transceiver interface.

10
sys/pci/if_pcn.c
View File

@ -410,6 +410,7 @@ static int pcn_probe(dev)
case Am79C971:
case Am79C972:
case Am79C973:
case Am79C976:
case Am79C978:
break;
default:
@ -761,7 +762,14 @@ static void pcn_rxeof(sc)
continue;
}
pcn_newbuf(sc, i, NULL);
if (pcn_newbuf(sc, i, NULL)) {
/* Ran out of mbufs; recycle this one. */
pcn_newbuf(sc, i, m);
ifp->if_ierrors++;
PCN_INC(i, PCN_RX_LIST_CNT);
continue;
}
PCN_INC(i, PCN_RX_LIST_CNT);
/* No errors; receive the packet. */

14
sys/pci/if_pcnreg.h
View File

@ -212,19 +212,6 @@
/*
* Chip ID values.
*/
/* Chip types */
#define LANCE 1 /* Am7990 */
#define C_LANCE 2 /* Am79C90 */
#define PCnet_ISA 3 /* Am79C960 */
#define PCnet_ISAplus 4 /* Am79C961 */
#define PCnet_ISA_II 5 /* Am79C961A */
#define PCnet_32 6 /* Am79C965 */
#define PCnet_PCI 7 /* Am79C970 */
#define PCnet_PCI_II 8 /* Am79C970A */
#define PCnet_FAST 9 /* Am79C971 */
#define PCnet_FASTplus 10 /* Am79C972 */
#define PCnet_Home 11 /* Am79C978 */
/* CSR88-89: Chip ID masks */
#define AMD_MASK 0x003
#define PART_MASK 0xffff
@ -238,6 +225,7 @@
#define Am79C972 0x2624
#define Am79C973 0x2625
#define Am79C978 0x2626
#define Am79C976 0x2628
/*
* Advanced feature control (CSR122)