dri-devel November 2011

dri-devel@lists.freedesktop.org

110 participants
555 discussions

[PATCH] agp: iommu_gfx_mapped only available if CONFIG_INTEL_IOMMU is set
by Keith Packard 01 Nov '11

01 Nov '11

Kernels with no iommu support cannot ever need the Ironlake work-around, so never enable it in that case. Might be better to completely remove the work-around from the kernel in this case? Signed-off-by: Keith Packard <keithp(a)keithp.com> Cc: Ben Widawsky <ben(a)bwidawsk.net> --- Here's a shorter patch which just elides the body of the needs_idle_maps functions drivers/char/agp/intel-gtt.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/… [View More]

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[PATCH 1/4] drm/radeon/kms: split MSI check into a separate function
by alexdeucher＠gmail.com 01 Nov '11

01 Nov '11

From: Alex Deucher <alexander.deucher(a)amd.com> This makes it easier to add quirks for certain systems. Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Cc: stable(a)kernel.org --- drivers/gpu/drm/radeon/radeon_irq_kms.c | 29 +++++++++++++++++++++++------ 1 files changed, 23 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index 9ec830c..f0e660b 100644 --- a/drivers/gpu/drm/radeon/… [View More]

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[PATCH] TTM DMA pool v2.1
by Konrad Rzeszutek Wilk 01 Nov '11

01 Nov '11

[.. and this is what I said in v1 post]: Way back in January this patchset: http://lists.freedesktop.org/archives/dri-devel/2011-January/006905.html was merged in, but pieces of it had to be reverted b/c they did not work properly under PowerPC, ARM, and when swapping out pages to disk. After a bit of discussion on the mailing list http://marc.info/?i=4D769726.2030307@shipmail.org I started working on it, but got waylaid by other things .. and finally I am able to post the RFC patches. There … [View More]was a lot of discussion about it and I am not sure if I captured everybody's thoughts - if I did not - that is _not_ intentional - it has just been quite some time.. Anyhow .. the patches explore what the "lib/dmapool.c" does - which is to have a DMA pool that the device has associated with. I kind of married that code along with drivers/gpu/drm/ttm/ttm_page_alloc.c to create a TTM DMA pool code. The end result is DMA pool with extra features: can do write-combine, uncached, writeback (and tracks them and sets back to WB when freed); tracks "cached" pages that don't really need to be returned to a pool; and hooks up to the shrinker code so that the pools can be shrunk. If you guys think this set of patches make sense - my future plans were 1) Get this in large crowd of testing .. and if it works for a kernel release 2) to move a bulk of this in the lib/dmapool.c (I spoke with Matthew Wilcox about it and he is OK as long as I don't introduce performance regressions). But before I do any of that a second set of eyes taking a look at these patches would be most welcome. In regards to testing, I've been running them non-stop for the last month. (and found some issues which I've fixed up) - and been quite happy with how they work. Michel (thanks!) took a spin of the patches on his PowerPC and they did not cause any regressions (wheew). The patches are also located in a git tree: git://oss.oracle.com/git/kwilk/xen.git devel/ttm.dma_pool.v2.1 Konrad Rzeszutek Wilk (11): swiotlb: Expose swiotlb_nr_tlb function to modules nouveau/radeon: Set coherent DMA mask ttm/radeon/nouveau: Check the DMA address from TTM against known value. ttm: Wrap ttm_[put|get]_pages and extract GFP_* and caching states from 'struct ttm_tt' ttm: Get rid of temporary scaffolding ttm/driver: Expand ttm_backend_func to include two overrides for TTM page pool. ttm: Do not set the ttm->be to NULL before calling the TTM page pool to free pages. ttm: Provide DMA aware TTM page pool code. ttm: Add 'no_dma' parameter to turn the TTM DMA pool off during runtime. nouveau/ttm/dma: Enable the TTM DMA pool if device can only do 32-bit DMA. radeon/ttm/dma: Enable the TTM DMA pool if the device can only do 32-bit. drivers/gpu/drm/nouveau/nouveau_debugfs.c | 1 + drivers/gpu/drm/nouveau/nouveau_mem.c | 5 + drivers/gpu/drm/nouveau/nouveau_sgdma.c | 8 +- drivers/gpu/drm/radeon/radeon_device.c | 6 + drivers/gpu/drm/radeon/radeon_gart.c | 4 +- drivers/gpu/drm/radeon/radeon_ttm.c | 19 +- drivers/gpu/drm/ttm/Makefile | 3 + drivers/gpu/drm/ttm/ttm_memory.c | 5 + drivers/gpu/drm/ttm/ttm_page_alloc.c | 108 ++- drivers/gpu/drm/ttm/ttm_page_alloc_dma.c | 1446 +++++++++++++++++++++++++++++ drivers/gpu/drm/ttm/ttm_tt.c | 21 +- drivers/xen/swiotlb-xen.c | 2 +- include/drm/ttm/ttm_bo_driver.h | 31 + include/drm/ttm/ttm_page_alloc.h | 53 +- include/linux/swiotlb.h | 2 +- lib/swiotlb.c | 5 +- 16 files changed, 1637 insertions(+), 82 deletions(-) [View Less]

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[Bug 27314] displayport link training fails on certain panels (channel equalization fails)
by bugzilla-daemon＠freedesktop.org 01 Nov '11

01 Nov '11

https://bugs.freedesktop.org/show_bug.cgi?id=27314 --- Comment #56 from Travis Glenn Hansen <travisghansen(a)yahoo.com> 2011-10-31 19:59:41 PDT --- Alex Thanks for continuing to look at this :) I have converted my amd machine to a server so I'm not using it (or rebooting it for that matter) with an external monitor. However I ran through some updates today and decided to hook it up to provide feedback. I updated to 3.1.0 (gentoo variant) and it continues to fail for me :( After … [View More]

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[PATCH] Improvements in edid detection timings (final)
by Eugeni Dodonov 01 Nov '11

01 Nov '11

Those are two identical fixes for improving EDID detection timings, which also fix extremely slow xrandr queries in case of phantom outputs (https://bugs.freedesktop.org/show_bug.cgi?id=41059) The first fix is a small change to drm_edid, which prevents it from talking to non-existent adapters by detecting them faster. The second fix replicates the first one within the i915 driver. It does the same thing, but without touching core DRM files. Those are some of the testing results from our QA … [View More]team: Regressions and functional testing: Machine+ports result Ironlake(mobile) eDP/VGA pass Ironlake(desktop) DP/VGA pass Ironlake(mobile) LVDS/VGA/DP pass G45(desktop) VGA/HDMI pass Pineview(mobile) LVDS/VGA pass xrandr performance: Without patch with patch E6510(Ironlake mobile) 0.119 0.111 PK1(Ironlake desktop) 0.101 0.080 T410b(Ironlake mobile) 0.406 0.114 G45b( G45 desktop) 0.121 0.091 Pnv1(Pineview mobile) 0.043 0.040 Those are the results for machines affected by phantom outputs issue, based on fd.o #41059 feedback: xrandr performance: Without patch with patch System 1 0.840 0.290 System 2 0.690 0.140 System 3 0.315 0.280 System 4 0.175 0.140 System 6 (original issue) 4s 0.184 We have observed no regressions in any cases, and performance improvements of 20-30% for edid detection timing. Combining it with the results obtained at https://bugs.freedesktop.org/show_bug.cgi?id=41059, besides those improvements it also improves xrandr timing by up to 20x in the worst case of phantom outputs. I believe that the better way to fix this is via the drm_get_edid() fix, as it is a one-line fix and could benefit all other chipsets. And we won't have to reinvent the wheel with intel_drm_get_edid, which only duplicates the existent functionality with no additional benefits. Could we have any feedback or reviewed-by or from non-intel drm maintainers? Thanks! Eugeni Dodonov (2): Give up on edid retries when i2c tells us that bus is not there Check if the bus is valid prior to discovering edid. drivers/gpu/drm/drm_edid.c | 5 ++++ drivers/gpu/drm/i915/intel_crt.c | 46 ++++++++++++++++++------------------ drivers/gpu/drm/i915/intel_dp.c | 4 +- drivers/gpu/drm/i915/intel_drv.h | 3 +- drivers/gpu/drm/i915/intel_hdmi.c | 4 +- drivers/gpu/drm/i915/intel_i2c.c | 42 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_lvds.c | 2 +- drivers/gpu/drm/i915/intel_modes.c | 29 +---------------------- drivers/gpu/drm/i915/intel_sdvo.c | 4 +- 9 files changed, 80 insertions(+), 59 deletions(-) -- 1.7.7 [View Less]

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dri-devel November 2011