PCI_IOC_MAP_BAR ioctl for userspace BAR mapping#74
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OliverMiyarUgarte wants to merge 1 commit intoNetBSD:trunkfrom
Draft
PCI_IOC_MAP_BAR ioctl for userspace BAR mapping#74OliverMiyarUgarte wants to merge 1 commit intoNetBSD:trunkfrom
OliverMiyarUgarte wants to merge 1 commit intoNetBSD:trunkfrom
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Add struct pciio_bar_map to pciio.h
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yamt
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Mar 28, 2026
): sys/arch/evbppc/wii/dev/wiifb.c: revision 1.8 sys/arch/evbppc/wii/dev/gxreg.h: revision 1.1 sys/arch/evbppc/include/wii.h: revision 1.11 sys/arch/evbppc/wii/machdep.c: revision 1.11 sys/arch/evbppc/wii/dev/viio.h: file removal wii: Use GX to accelerate RGB to YUY2 conversion. Allocate a 640x480x32 RGB buffer in memory, and when not in EMUL mode, use the CPU to copy from the RGB buffer to EFB (taking advantage of the pixel engine to do RGB -> YUY2 for us) and then use the GX to copy from EFB to XFB. Not only does this improve performance significantly in X, it also results in better colour reproduction. The previous software method employed by xf86-video-wsfb had some corner cases where eg. dark colours would display as bright pink.
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PCI_IOC_MAP_BAR ioctl for userspace BAR mapping
Added a new ioctl to
/dev/pcithat allows userspace drivers to map PCI BARs.What was done:
struct pciio_bar_maptopciio.hPCI_IOC_MAP_BARhandler inpci_usrreq.cTesting performed:
What's Next:
Note: This is a draft PR to get early feedback before adding documentation and final polish. All feedback welcome!