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ath_pci PCI setup fixes.

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* Break out the PCI setup override code into a new function.
* Re-apply the PCI overrides on powersave resume. The retry timeout
  register isn't currently being saved/resumed by the PCI driver/bus
  code.
This commit is contained in:
Adrian Chadd 2011-10-14 03:24:35 +00:00
parent 2d6fb05305
commit cdd36f96b2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=226355
1 changed files with 17 additions and 3 deletions
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20
sys/dev/ath/if_ath_pci.c
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@ -74,6 +74,16 @@ struct ath_pci_softc {
#define BS_BAR 0x10
#define PCIR_RETRY_TIMEOUT 0x41
static void
ath_pci_setup(device_t dev)
{
/*
* Disable retry timeout to keep PCI Tx retries from
* interfering with C3 CPU state.
*/
pci_write_config(dev, PCIR_RETRY_TIMEOUT, 0, 1);
}
static int
ath_pci_probe(device_t dev)
{
@ -103,10 +113,9 @@ ath_pci_attach(device_t dev)
pci_enable_busmaster(dev);
/*
* Disable retry timeout to keep PCI Tx retries from
* interfering with C3 CPU state.
* Setup other PCI bus configuration parameters.
*/
pci_write_config(dev, PCIR_RETRY_TIMEOUT, 0, 1);
ath_pci_setup(dev);
/*
* Setup memory-mapping of PCI registers.
@ -228,6 +237,11 @@ ath_pci_resume(device_t dev)
{
struct ath_pci_softc *psc = device_get_softc(dev);
/*
* Suspend/resume resets the PCI configuration space.
*/
ath_pci_setup(dev);
ath_resume(&psc->sc_sc);
return (0);