<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - DRM / KMS bootup error on VX900 platform" href="https://bugs.freedesktop.org/show_bug.cgi?id=94473#c23">Comment # 23</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - DRM / KMS bootup error on VX900 platform" href="https://bugs.freedesktop.org/show_bug.cgi?id=94473">bug 94473</a> from <a class="email" href="mailto:kevinbrace@gmx.com" title="Kevin Brace <kevinbrace@gmx.com>"> Kevin Brace</a> <pre>(In reply to HuangRan from <a href="show_bug.cgi?id=94473#c22">comment #22</a>) Hi Frank, > With further kernel debugging, we found that in via_driver_load() function, > it has the code as below: > #if __OS_HAS_AGP > if ((dev_priv->engine_type > VIA_ENG_H2) || > (dev->agp && drm_pci_device_is_agp(dev))) { > ret = via_detect_agp(dev); > if (!ret) > via_agp_engine_init(dev_priv); > else > DRM_ERROR("Failed to allocate AGP\n"); > } > #endif > > Actually dev->agp is NULL for VX900. But because dev_priv->engine_type value > is greater than VIA_ENG_H2, via_detect_agp() is called. > I am not sure what does engine_type mean? Can anybody give some comments? > And why is it related to AGP detect? > > Thanks, > Frank H2 or H6 appears to be the DMA engine revision. <a href="https://www.freedesktop.org/wiki/Openchrome/DMAEngineNotes/">https://www.freedesktop.org/wiki/Openchrome/DMAEngineNotes/</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>