diff options
| author | yongari <yongari@FreeBSD.org> | 2011-12-13 20:26:46 +0000 |
|---|---|---|
| committer | yongari <yongari@FreeBSD.org> | 2011-12-13 20:26:46 +0000 |
| commit | f563b0b3f4d8603ab6d7dc5632ca80a4f0129ef8 (patch) | |
| tree | e4bebd64267c1e1ccbc1d60335df1b45c0feb394 /sys/dev/bge | |
| parent | a3085588a88fa58eb5b1eaae471999e1995a29cf (diff) | |
| download | FreeBSD-src-f563b0b3f4d8603ab6d7dc5632ca80a4f0129ef8.zip FreeBSD-src-f563b0b3f4d8603ab6d7dc5632ca80a4f0129ef8.tar.gz | |
BCM5720 performance tweak from Broadcom.
o Allow multiple outstanding read requests from non-LSO read DMA engine.
o Allow 4KB burst length reads for non-LSO frames.
o Enable 512B burst length reads for buffer descriptors.
Submitted by: Geans Pin < geanspin <> broadcom dot com >
Diffstat (limited to 'sys/dev/bge')
| -rw-r--r-- | sys/dev/bge/if_bge.c | 20 | ||||
| -rw-r--r-- | sys/dev/bge/if_bgereg.h | 1 |
2 files changed, 18 insertions, 3 deletions
diff --git a/sys/dev/bge/if_bge.c b/sys/dev/bge/if_bge.c index 69d831d..64bc1ef 100644 --- a/sys/dev/bge/if_bge.c +++ b/sys/dev/bge/if_bge.c @@ -2080,9 +2080,15 @@ bge_blockinit(struct bge_softc *sc) val |= BGE_RDMAMODE_TSO6_ENABLE; } - if (sc->bge_asicrev == BGE_ASICREV_BCM5720) + if (sc->bge_asicrev == BGE_ASICREV_BCM5720) { val |= CSR_READ_4(sc, BGE_RDMA_MODE) & BGE_RDMAMODE_H2BNC_VLAN_DET; + /* + * Allow multiple outstanding read requests from + * non-LSO read DMA engine. + */ + val &= ~BGE_RDMAMODE_MULT_DMA_RD_DIS; + } if (sc->bge_asicrev == BGE_ASICREV_BCM5761 || sc->bge_asicrev == BGE_ASICREV_BCM5784 || @@ -2112,12 +2118,20 @@ bge_blockinit(struct bge_softc *sc) BGE_RDMA_RSRVCTRL_FIFO_OFLW_FIX); } - if (sc->bge_asicrev == BGE_ASICREV_BCM5719 || - sc->bge_asicrev == BGE_ASICREV_BCM5720) { + if (sc->bge_asicrev == BGE_ASICREV_BCM5719) { CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL, CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) | BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_4K | BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K); + } else if (sc->bge_asicrev == BGE_ASICREV_BCM5720) { + /* + * Allow 4KB burst length reads for non-LSO frames. + * Enable 512B burst length reads for buffer descriptors. + */ + CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL, + CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) | + BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_512 | + BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K); } CSR_WRITE_4(sc, BGE_RDMA_MODE, val); diff --git a/sys/dev/bge/if_bgereg.h b/sys/dev/bge/if_bgereg.h index 3ba4176..ccb2c6d 100644 --- a/sys/dev/bge/if_bgereg.h +++ b/sys/dev/bge/if_bgereg.h @@ -1573,6 +1573,7 @@ #define BGE_RDMA_RSRVCTRL_FIFO_HWM_MASK 0x000FF000 #define BGE_RDMA_RSRVCTRL_TXMRGN_MASK 0xFFE00000 +#define BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_512 0x00020000 #define BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_4K 0x00030000 #define BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K 0x000C0000 |
