diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/pci')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/pci/grpci.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/pci/grpci.c b/c/src/lib/libbsp/sparc/shared/pci/grpci.c index 0b781d3bdf..eb188bbae1 100644 --- a/c/src/lib/libbsp/sparc/shared/pci/grpci.c +++ b/c/src/lib/libbsp/sparc/shared/pci/grpci.c @@ -449,6 +449,13 @@ int grpci_hw_init(struct grpci_priv *priv) /* Translate I/O accesses 1:1 */ priv->regs->iomap = priv->pci_io & 0xffff0000; + /* Setup Latency Timer and cache line size. Default cache line + * size will result in poor performance (256 word fetches), 0xff + * will set it according to the max size of the PCI FIFO. + */ + grpci_cfg_w8(host, PCI_CACHE_LINE_SIZE, 0xff); + grpci_cfg_w8(host, PCI_LATENCY_TIMER, 0x40); + /* set as bus master and enable pci memory responses */ grpci_cfg_r32(host, PCI_COMMAND, &data); data |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); |