em4k(4) - NetBSD Manual Pages

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EM4K(4)              NetBSD/amiga Kernel Interfaces Manual             EM4K(4)

em4k -- ELBOX Mediator 4000 PCI bridge driver
em4k0 at zbus0 emmem0 at zbus0 pci* at empb0 options PCI_NETBSD_CONFIGURE
The em4k driver provides support for the PCI bus present on Mediator 4000 bridge and associated PCI/Zorro daughterboards.
The em4k driver supports the following hardware: ELBOX Mediator PCI 4000D ELBOX Mediator PCI 4000Di ELBOX Mediator PCI 4000T ELBOX Mediator PCI 3000D ELBOX Mediator PCI 3000T MK-II editions are also supported.
amiga/empb(4), amiga/mppb(4), amiga/p5pb(4), pci(4)
The em4k device first appeared in NetBSD 7.0.
The em4k driver was written by Radoslaw Kujawa <radoslaw.kujawa@gmail.com>. It was developed using information obtained through reverse engineering by Frank Wille and Radoslaw Kujawa. The authors have no access to official documentation (which is only available under NDA).
DMA to host memory is not supported. It is unclear if the hardware sup- ports DMA to host memory at all. It is possible to implement DMA through bounce buffers in graphics card memory, but this needs further research. NetBSD 10.99 February 17, 2017 NetBSD 10.99
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