Add preliminary support for the RealTek 8169 gigE chip. Changes:

- Fix a bug in rl_dma_map_desc(): set the 'end of ring' bit in the
  right descriptor (DESC_CNT - 1, not DESC_CNT). The 8139C+ is limited
  to 64 descriptors and automatically wraps at 64 descriptors even
  if the EOR bit isn't set, but the 8169 NIC can have up to 1024
  descriptors per ring, so we must set the wrap point in the right
  place.

- RealTek moved the RL_TIMERINT register from offset 0x54 to 0x58 in
  the 8169 -- account for this.

- Added rl_gmii_readreg() and rl_gmii_writereg() routines.

- Fix rl_probe() to deal with the case where the base type is
  not RL_8139.

The next step is to add jumbo buffer support.

Tested with the Xterasys XN-152 NIC (hard to beat $29 for a gigE NIC).

1 files changed, 5 insertions, 0 deletions

diff --git a/sys/pci/if_rlreg.h b/sys/pci/if_rlreg.h
index 6af61a1..086b61b 100644
--- a/sys/pci/if_rlreg.h
+++ b/sys/pci/if_rlreg.h
@@ -120,6 +120,7 @@
 /*
  * Registers specific to the 8169 gigE chip
  */
+#define RL_TIMERINT_8169	0x0058	/* different offset than 8139 */
 #define RL_PHYAR		0x0060
 #define RL_TBICSR		0x0064
 #define RL_TBI_ANAR		0x0068
@@ -138,6 +139,8 @@
 #define RL_TXCFG_IFG		0x03000000	/* interframe gap */
 #define RL_TXCFG_HWREV		0x7CC00000
 
+#define RL_HWREV_8169		0x00000000
+#define RL_HWREV_8110		0x00800000
 #define RL_HWREV_8139		0x60000000
 #define RL_HWREV_8139A		0x70000000
 #define RL_HWREV_8139AG		0x70800000
@@ -146,6 +149,8 @@
 #define RL_HWREV_8139C		0x74000000
 #define RL_HWREV_8139D		0x74400000
 #define RL_HWREV_8139CPLUS	0x74800000
+#define RL_HWREV_8101		0x74c00000
+#define RL_HWREV_8100		0x78800000
 
 #define RL_TXDMA_16BYTES	0x00000000
 #define RL_TXDMA_32BYTES	0x00000100