<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Radeon: evergreen Atombios in loop during initialization on ppc64" href="https://bugs.freedesktop.org/show_bug.cgi?id=59982#c10">Comment # 10</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Radeon: evergreen Atombios in loop during initialization on ppc64" href="https://bugs.freedesktop.org/show_bug.cgi?id=59982">bug 59982</a> from <a class="email" href="mailto:lucaskt@linux.vnet.ibm.com" title="Lucas Kannebley Tavares <lucaskt@linux.vnet.ibm.com>"> Lucas Kannebley Tavares</a> <pre>Hi Jerome, thanks for the tips. Well, I followed the next error [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CC68 (len 72, WS 0, PS 0) @ 0xCC97 Down to the test in 0x2f on 0xcc68. command_table 0000cc68 #2c (UpdateCRTC_DoubleBufferRegisters): ... 0027: 5420b51b CLEAR reg[1bb5] [...X] 002b: 5420bd1b CLEAR reg[1bbd] [...X] 002f: 4a25b61b01 TEST reg[1bb6] [...X] <- 01 I have a question here: how do I determine what are these registers? I couldn't match 1bb6 to anything on the radeon driver code, so I suppose that's somewhere else... or is there some other way to read that? Anyway, I backtracked that code back to this call on atombios_crtc.c: static void atombios_lock_crtc(struct drm_crtc *crtc, int lock) { ... int index = GetIndexIntoMasterTable(COMMAND, UpdateCRTC_DoubleBufferRegisters); ... atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); } which could've come from either of these: static void atombios_crtc_prepare(struct drm_crtc *crtc) static void atombios_crtc_commit(struct drm_crtc *crtc) Since those are callbacks registered as helper funcs, and I'm not sure of their semantics, I ended up getting stuck :) static const struct drm_crtc_helper_funcs atombios_helper_funcs = { .prepare = atombios_crtc_prepare, .commit = atombios_crtc_commit, Any ideas here? Thanks! :)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>