diff options
| author | Brad Smith <brad@cvs.openbsd.org> | 2004-12-16 14:30:33 +0000 |
|---|---|---|
| committer | Brad Smith <brad@cvs.openbsd.org> | 2004-12-16 14:30:33 +0000 |
| commit | 735c2392b48ffb575f6e7b782d15938d9c397569 (patch) | |
| tree | a35c4ca525a0a1621b29c985de640326ffbd6731 /sys | |
| parent | 2876c57e1963fc9a1c5b22dc1d87eb9c90fbab7f (diff) | |
rev 1.71
* Set buffer management high water marks for MTU > 1514.
* Set BGE_MAX_RX_FRAME_LOWAT (from Linux driver).
rev 1.25
* Update onchip buffer tunables to recommended values from Linux drivers.
* Increase Tx interrupt-coalescing thresholds, to reduce Tx-done interrupts.
From NetBSD
ok krw@
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/pci/if_bge.c | 24 | ||||
| -rw-r--r-- | sys/dev/pci/if_bgereg.h | 3 |
2 files changed, 20 insertions, 7 deletions
diff --git a/sys/dev/pci/if_bge.c b/sys/dev/pci/if_bge.c index f0470d5cd64..12a9fbe8d62 100644 --- a/sys/dev/pci/if_bge.c +++ b/sys/dev/pci/if_bge.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_bge.c,v 1.43 2004/12/12 19:11:26 brad Exp $ */ +/* $OpenBSD: if_bge.c,v 1.44 2004/12/16 14:30:31 brad Exp $ */ /* * Copyright (c) 2001 Wind River Systems * Copyright (c) 1997, 1998, 1999, 2001 @@ -1132,6 +1132,7 @@ bge_blockinit(sc) struct bge_softc *sc; { struct bge_rcb *rcb; + struct ifnet *ifp = &sc->arpcom.ac_if; vaddr_t rcb_addr; int i; @@ -1168,14 +1169,23 @@ bge_blockinit(sc) } /* Configure mbuf pool watermarks */ + /* new broadcom docs strongly recommend these: */ if ((sc->bge_quirks & BGE_QUIRK_5705_CORE) == 0) { - CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50); - CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20); + if (ifp->if_mtu > ETHER_MAX_LEN) { + CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50); + CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20); + CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60); + } else { + /* Values from Linux driver... */ + CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 304); + CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 152); + CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 380); + } } else { CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0); CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10); + CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60); } - CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60); /* Configure DMA resource watermarks */ CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5); @@ -1895,9 +1905,9 @@ bge_attach(parent, self, aux) /* Set default tuneable values. */ sc->bge_stat_ticks = BGE_TICKS_PER_SEC; sc->bge_rx_coal_ticks = 150; - sc->bge_tx_coal_ticks = 150; sc->bge_rx_max_coal_bds = 64; - sc->bge_tx_max_coal_bds = 128; + sc->bge_tx_coal_ticks = 300; + sc->bge_tx_max_coal_bds = 400; /* 5705 limits RX return ring to 512 entries. */ if ((sc->bge_quirks & BGE_QUIRK_5705_CORE) == 0) @@ -2829,6 +2839,8 @@ bge_init(xsc) /* Turn on receiver */ BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE); + CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 2); + /* Tell firmware we're alive. */ BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP); diff --git a/sys/dev/pci/if_bgereg.h b/sys/dev/pci/if_bgereg.h index 138b04cbd50..0581a7d7ae9 100644 --- a/sys/dev/pci/if_bgereg.h +++ b/sys/dev/pci/if_bgereg.h @@ -1,4 +1,4 @@ -/* $OpenBSD: if_bgereg.h,v 1.15 2004/12/12 19:11:26 brad Exp $ */ +/* $OpenBSD: if_bgereg.h,v 1.16 2004/12/16 14:30:32 brad Exp $ */ /* * Copyright (c) 2001 Wind River Systems * Copyright (c) 1997, 1998, 1999, 2001 @@ -532,6 +532,7 @@ #define BGE_RX_BD_RULES_CTL15 0x04F8 #define BGE_RX_BD_RULES_MASKVAL15 0x04FC #define BGE_RX_RULES_CFG 0x0500 +#define BGE_MAX_RX_FRAME_LOWAT 0x0504 #define BGE_SERDES_CFG 0x0590 #define BGE_SERDES_STS 0x0594 #define BGE_SGDIG_CFG 0x05B0 |