diff options
Diffstat (limited to 'drivers/scsi/aic7xxx/aic79xx_pci.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic79xx_pci.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_pci.c b/drivers/scsi/aic7xxx/aic79xx_pci.c index 0bada0028aa..7a203a90601 100644 --- a/drivers/scsi/aic7xxx/aic79xx_pci.c +++ b/drivers/scsi/aic7xxx/aic79xx_pci.c @@ -389,6 +389,33 @@ ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry) return error; } +void +ahd_pci_suspend(struct ahd_softc *ahd) +{ + /* + * Save chip register configuration data for chip resets + * that occur during runtime and resume events. + */ + ahd->suspend_state.pci_state.devconfig = + ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4); + ahd->suspend_state.pci_state.command = + ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/1); + ahd->suspend_state.pci_state.csize_lattime = + ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME, /*bytes*/1); + +} + +void +ahd_pci_resume(struct ahd_softc *ahd) +{ + ahd_pci_write_config(ahd->dev_softc, DEVCONFIG, + ahd->suspend_state.pci_state.devconfig, /*bytes*/4); + ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, + ahd->suspend_state.pci_state.command, /*bytes*/1); + ahd_pci_write_config(ahd->dev_softc, CSIZE_LATTIME, + ahd->suspend_state.pci_state.csize_lattime, /*bytes*/1); +} + /* * Perform some simple tests that should catch situations where * our registers are invalidly mapped. |