Hi everyone, Here is the second batch of patches to add GK20A support to Nouveau. This time we are adding the actual chip support, and this series brings the driver to a point where a slightly-tweaked Mesa successfully runs shaders and renders triangles on GBM! Many thanks to Thierry Reding and the people on the #nouveau IRC channel for their help without which we would not have reached this milestone. A few lines of hacks (not included here) are still needed to deal with cached mappings triggering external aborts and CPU/GPU memory coherency issues, but I hope to understand and address these issues next. Most of the changes below have already been seen (and sometimes reviewed) in an earlier patchset. What has been added is proper PGRAPH support (still needing an external firmware and mostly reusing NVE4's code) as well as a better RAM implementation. How to represent and manage VRAM has been the hardest part to deal with, since GK20A shares the system memory with the CPU without any kind of partition. I have tried various approaches (included some in which no RAM object ever gets instanciated) and finally decided to go for one using DMA-contiguous memory allocations and relying on BAR mappings for kernel access and exposure to user-space, as it fits better with existing code and keeps us safe from most of the CPU/GPU memory coherency issues (at the cost of some performance). Looking forward to your review of these few patches! :) Cheers, Alex. Alexandre Courbot (12): drm/nouveau: fix missing newline drm/nouveau/timer: skip calibration on GK20A drm/nouveau/bar: only ioremap BAR3 if it exists drm/nouveau/bar/nvc0: support chips without BAR3 drm/nouveau/fifo: add GK20A support drm/nouveau/ibus: add GK20A support drm/nouveau/fb: add GK20A support drm/nouveau/graph: enable when using external firmware drm/nouveau/graph: pad firmware code at load time drm/nouveau/graph: add GK20A support drm/nouveau: support GK20A in nouveau_accel_init() drm/nouveau: support for probing GK20A drivers/gpu/drm/nouveau/Makefile | 5 + drivers/gpu/drm/nouveau/core/engine/device/nve0.c | 20 +++ drivers/gpu/drm/nouveau/core/engine/fifo/nve0.h | 1 + drivers/gpu/drm/nouveau/core/engine/fifo/nvea.c | 35 +++++ .../gpu/drm/nouveau/core/engine/graph/ctxnve4.c | 4 +- drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c | 12 +- drivers/gpu/drm/nouveau/core/engine/graph/nvc0.h | 9 ++ drivers/gpu/drm/nouveau/core/engine/graph/nve4.c | 2 +- drivers/gpu/drm/nouveau/core/engine/graph/nvea.c | 75 +++++++++ drivers/gpu/drm/nouveau/core/include/engine/fifo.h | 1 + .../gpu/drm/nouveau/core/include/engine/graph.h | 1 + drivers/gpu/drm/nouveau/core/include/subdev/fb.h | 1 + drivers/gpu/drm/nouveau/core/include/subdev/ibus.h | 1 + drivers/gpu/drm/nouveau/core/subdev/bar/base.c | 7 +- drivers/gpu/drm/nouveau/core/subdev/bar/nvc0.c | 101 +++++++------ drivers/gpu/drm/nouveau/core/subdev/fb/nvea.c | 56 +++++++ drivers/gpu/drm/nouveau/core/subdev/fb/priv.h | 1 + drivers/gpu/drm/nouveau/core/subdev/fb/ramnvea.c | 168 +++++++++++++++++++++ drivers/gpu/drm/nouveau/core/subdev/ibus/nvea.c | 110 ++++++++++++++ drivers/gpu/drm/nouveau/core/subdev/timer/nv04.c | 19 ++- drivers/gpu/drm/nouveau/nouveau_drm.c | 12 +- 21 files changed, 578 insertions(+), 63 deletions(-) create mode 100644 drivers/gpu/drm/nouveau/core/engine/fifo/nvea.c create mode 100644 drivers/gpu/drm/nouveau/core/engine/graph/nvea.c create mode 100644 drivers/gpu/drm/nouveau/core/subdev/fb/nvea.c create mode 100644 drivers/gpu/drm/nouveau/core/subdev/fb/ramnvea.c create mode 100644 drivers/gpu/drm/nouveau/core/subdev/ibus/nvea.c -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
