PERFORCE change 129272 for review
Kevin Lo
kevlo at FreeBSD.org
Mon Nov 19 22:44:46 PST 2007
http://perforce.freebsd.org/chv.cgi?CH=129272
Change 129272 by kevlo at kevlo_rtsl on 2007/11/20 06:44:12
Use pci_enable_busmaster() to turn on busmaster
Affected files ...
.. //depot/projects/wifi/sys/dev/bwi/if_bwi_pci.c#4 edit
Differences ...
==== //depot/projects/wifi/sys/dev/bwi/if_bwi_pci.c#4 (text+ko) ====
@@ -110,36 +110,6 @@
return ENXIO;
}
-static u_int32_t
-bwi_pci_setup(device_t dev)
-{
- u_int32_t cmd;
-
- /*
- * Enable memory mapping and bus mastering.
- */
- cmd = pci_read_config(dev, PCIR_COMMAND, 4);
- cmd |= PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN;
- pci_write_config(dev, PCIR_COMMAND, cmd, 4);
- cmd = pci_read_config(dev, PCIR_COMMAND, 4);
- if ((cmd & PCIM_CMD_MEMEN) == 0) {
- device_printf(dev, "failed to enable memory mapping\n");
- return 0;
- }
- if ((cmd & PCIM_CMD_BUSMASTEREN) == 0) {
- device_printf(dev, "failed to enable bus mastering\n");
- return 0;
- }
-
- /*
- * Disable retry timeout to keep PCI Tx retries from
- * interfering with C3 CPU state.
- */
- pci_write_config(dev, PCIR_RETRY_TIMEOUT, 0, 1);
-
- return 1;
-}
-
static int
bwi_pci_attach(device_t dev)
{
@@ -149,8 +119,10 @@
sc->sc_dev = dev;
- if (!bwi_pci_setup(dev))
- goto bad;
+ /*
+ * Enable bus mastering.
+ */
+ pci_enable_busmaster(dev);
/*
* Setup memory-mapping of PCI registers.
@@ -251,9 +223,6 @@
{
struct bwi_pci_softc *psc = device_get_softc(dev);
- if (!bwi_pci_setup(dev))
- return ENXIO;
-
bwi_resume(&psc->sc_sc);
return (0);
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