96891ceeda
When iwlwifi runs on IOMMU, IOMMU generates a lot of PTE write faults because PTE write bit is not set on some of PTE's. This is because iwlwifi driver calls DMA mapping with PCI_DMA_TODEVICE which is read only in mapping PTE. But iwlwifi device actually writes to the mapped page to update its contents. This issue is not exposed in swiotlb. But VT-d hardware can capture this fault and stop the fault transaction. The iwl TX command contains a scratch field that is updated by uCode to indicate retry counts. For 5000 series the patch is required also for regular frames, but this patch does not differenciate. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> |
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| .. | ||
| ath5k | ||
| ath9k | ||
| b43 | ||
| b43legacy | ||
| hostap | ||
| ipw2x00 | ||
| iwlwifi | ||
| libertas | ||
| libertas_tf | ||
| orinoco | ||
| p54 | ||
| prism54 | ||
| rt2x00 | ||
| rtl818x | ||
| zd1211rw | ||
| adm8211.c | ||
| adm8211.h | ||
| airo_cs.c | ||
| airo.c | ||
| airo.h | ||
| arlan-main.c | ||
| arlan-proc.c | ||
| arlan.h | ||
| at76c50x-usb.c | ||
| at76c50x-usb.h | ||
| atmel_cs.c | ||
| atmel_pci.c | ||
| atmel.c | ||
| atmel.h | ||
| i82586.h | ||
| i82593.h | ||
| Kconfig | ||
| mac80211_hwsim.c | ||
| Makefile | ||
| netwave_cs.c | ||
| ray_cs.c | ||
| ray_cs.h | ||
| rayctl.h | ||
| rndis_wlan.c | ||
| strip.c | ||
| wavelan_cs.c | ||
| wavelan_cs.h | ||
| wavelan_cs.p.h | ||
| wavelan.c | ||
| wavelan.h | ||
| wavelan.p.h | ||
| wl3501_cs.c | ||
| wl3501.h | ||
| zd1201.c | ||
| zd1201.h | ||