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path: root/drivers/gpu/drm/radeon/evergreen.c
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2012-03-21drm/radeon/kms: Update evergreen functions for trinityAlex Deucher
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-21drm/radeon/kms: DCE6.1 watermark updates for TNAlex Deucher
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-03-15drm: Merge tag 'v3.3-rc7' into drm-core-nextDave Airlie
Merge the fixes so far into core-next, needed to test intel driver. Conflicts: drivers/gpu/drm/i915/intel_ringbuffer.c
2012-02-29drm/radeon/kms: make ring_start, ring_test, and ib_test per ringAlex Deucher
Each ring type may need a different variant. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König<christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-29drm/radeon/kms: reorganize copy callbacksAlex Deucher
tidy up the radeon_asic struct, handle multiple rings better. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König<christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-27drm/radeon/kms: add wait_for_vblank asic callbackAlex Deucher
Required for future functionality. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-23Merge remote-tracking branch 'airlied/drm-next' into for-airliedDaniel Vetter
Manually resolve the conflict between the new enum drm property helpers in drm-next and the new "force-dvi" option that the "audio" output property gained in drm-intel-next. While resolving this conflict, switch the new drm_prop_enum_list to use the newly introduced enum defines instead of magic values. Conflicts: drivers/gpu/drm/i915/intel_modes.c Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-02-22drm/radeon/kms: properly set accel working flag and bailout when falseJerome Glisse
If accel is not working many subsystem such as the ib pool might not be initialized properly that can lead to segfault inside kernel when cs ioctl is call with non working acceleration. To avoid this make sure the accel working flag is false when an error in GPU startup happen and return EBUSY from cs ioctl if accel is not working. Signed-off-by: Jerome Glisse <jglisse@redhat.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-13drm/radeon: add support for evergreen/ni tiling informations v11Jerome Glisse
evergreen and northern island gpu needs more informations for 2D tiling than previous r6xx/r7xx. Add field to tiling ioctl to allow userspace to provide those. The v8 cs checking change to track color view on r6xx/r7xx doesn't affect old userspace as old userspace always emited 0 for this register. v2 fix r6xx/r7xx 2D tiling computation v3 fix r6xx/r7xx height align for untiled surface & add support for tile split on evergreen and newer v4 improve tiling debugging output v5 fix tile split code for evergreen and newer v6 set proper tile split for crtc register v7 fix tile split limit value v8 add COLOR_VIEW checking to r6xx/r7xx checker, add evergreen cs checking, update safe reg for r600, evergreen and cayman. Evergreen checking need some work around for stencil alignment issues v9 fix tile split value range, fix compressed texture handling and mipmap calculation, allow evergreen check to be silencious in front of current broken userspace (depth/stencil alignment issue) v10 fix eg 3d texture and compressed texture, fix r600 depth array, fix r600 color view computation, add support for evergreen stencil split v11 more verbose debugging in some case Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-02-03drm/radeon: do not continue after error from r600_ib_testMatthijs Kooijman
This return statement got dropped while fixing the conflicts introduced in 7a7e8734ac3. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-23drm/radeon/kms: add some missing semaphore initAlex Deucher
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-10Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
* 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (307 commits) drm/nouveau/pm: fix build with HWMON off gma500: silence gcc warnings in mid_get_vbt_data() drm/ttm: fix condition (and vs or) drm/radeon: double lock typo in radeon_vm_bo_rmv() drm/radeon: use after free in radeon_vm_bo_add() drm/sis|via: don't return stack garbage from free_mem ioctl drm/radeon/kms: remove pointless CS flags priority struct drm/radeon/kms: check if vm is supported in VA ioctl drm: introduce drm_can_sleep and use in intel/radeon drivers. (v2) radeon: Fix disabling PCI bus mastering on big endian hosts. ttm: fix agp since ttm tt rework agp: Fix multi-line warning message whitespace drm/ttm/dma: Fix accounting error when calling ttm_mem_global_free_page and don't try to free freed pages. drm/ttm/dma: Only call set_pages_array_wb when the page is not in WB pool. drm/radeon/kms: sync across multiple rings when doing bo moves v3 drm/radeon/kms: Add support for multi-ring sync in CS ioctl (v2) drm/radeon: GPU virtual memory support v22 drm: make DRM_UNLOCKED ioctls with their own mutex drm: no need to hold global mutex for static data drm/radeon/benchmark: common modes sweep ignores 640x480@32 ... Fix up trivial conflicts in radeon/evergreen.c and vmwgfx/vmwgfx_kms.c
2012-01-03Merge branch 'drm-radeon-testing' of ../drm-radeon-next into drm-core-nextDave Airlie
This merges the evergreen HDMI audio support. * 'drm-radeon-testing' of ../drm-radeon-next: drm/radeon/kms: define TMDS/LVTM HDMI enabling bits drm/radeon/kms: workaround invalid AVI infoframe checksum issue drm/radeon/kms: setup HDMI mode on Evergreen encoders drm/radeon/kms: support for audio on Evergreen drm/radeon/kms: minor HDMI audio cleanups drm/radeon/kms: do not force DVI mode on DCE4 if audio is on ridge Conflicts: drivers/gpu/drm/radeon/evergreen.c
2011-12-22drm/radeon/kms: bail on BTC parts if MC ucode is missingAlex Deucher
We already do this for cayman, need to also do it for BTC parts. The default memory and voltage setup is not adequate for advanced operation. Continuing will result in an unusable display. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@kernel.org Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon: introduce a sub allocator and convert ib pool to it v4Jerome Glisse
Somewhat specializaed sub-allocator designed to perform sub-allocation for command buffer not only for current cs ioctl but for future command submission ioctl as well. Patch also convert current ib pool to use the sub allocator. Idea is that ib poll buffer can be share with other command buffer submission not having 64K granularity. v2 Harmonize pool handling and add suspend/resume callback to pin/unpin sa bo (tested on rv280, rv370, r420, rv515, rv610, rv710, redwood, cayman, rs480, rs690, rs880) v3 Simplify allocator v4 Fix radeon_ib_get error path to properly free fence Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon/kms: add support for per-ring fence interruptsAlex Deucher
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon/kms: add some new ring params to better handle other ring typesAlex Deucher
Some rptr/wptrs fields have different offsets and not all rings are pm4 so add a new nop field. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon: precompute fence cpu/gpu addr once v3Jerome Glisse
Add a start fence driver helper function which will be call once for each ring and will compute cpu/gpu addr for fence depending on wether to use wb buffer or scratch reg. This patch replace initialize fence driver separately which was broken in regard of GPU lockup. The fence list for created, emited, signaled must be initialize once and only from the asic init callback not from the startup call back which is call from the gpu reset. v2: With this in place we no longer need to know the number of rings in fence_driver_init, also writing to the scratch reg before knowing its offset is a bad idea. v3: rebase on top of change to previous patch in the serie Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon: rename struct radeon_cp to radeon_ringChristian König
That naming seems to make more sense, since we not only want to run PM4 rings with it. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon: make cp variable an arrayChristian König
Replace cp, cp1 and cp2 members with just an array of radeon_cp structs. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon: make ring rptr and wptr register offsets variableChristian König
Every ring seems to have the concept of read and write pointers. Make the register offset variable so we can use the functions for different types of rings. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon: make all functions work with multiple rings.Christian König
Give all asic and radeon_ring_* functions a radeon_cp parameter, so they know the ring to work with. Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon/kms: add support for semaphores v3Christian König
They are used to sync between rings, while fences sync between a ring and the cpu. v2 Fix radeon_semaphore_driver_fini when no semaphore were allocated. v3 Initialize list early on to avoid issue in case or early error Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-20drm/radeon/kms: add support for multiple fence queues v2Alex Deucher
For supporting multiple CP ring buffers, async DMA engines and UVD. We still need a way to synchronize between engines. v2 initialize unused fence driver ring to avoid issue in suspend/unload Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <deathsimple@vodafone.de> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-19drm/radeon/kms: support for audio on EvergreenRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-12-01drm/radeon/kms: add some loop timeouts in pageflip codeAlex Deucher
Avoid infinite loops waiting for surface updates if a GPU reset happens while waiting for a page flip. See: https://bugs.freedesktop.org/show_bug.cgi?id=43191 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@kernel.org Reviewed-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de> Tested-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-11drm/radeon/kms/pm: add a proper pm profile init function for fusionAlex Deucher
The new power tables need to be handled differently when setting up the profiles. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-11drm/radeon/kms: fix use of vram scratch page on evergreen/niAlex Deucher
This hunk seems to have gotten lost when I rebased the patch. Reported-by: Sylvain Bertrand <sylvain.bertrand@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-04drm/radeon/kms: consolidate GART code, fix segfault after GPU lockup V2Jerome Glisse
After GPU lockup VRAM gart table is unpinned and thus its pointer becomes unvalid. This patch move the unpin code to a common helper function and set pointer to NULL so that page update code can check if it should update GPU page table or not. That way bo still bound to GART can be unbound (pci_unmap_page for all there page) properly while there is no need to update the GPU page table. V2 move the test for null gart out of the loop, small optimization Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-03drm/radeon/kms: set HPD polarity in hpd_init()Alex Deucher
Polarity needs to be set accordingly to connector status (connected or disconnected). Set it up in hpd_init() so first hotplug works reliably no matter what is the initial set of connector. hpd_init() also covers resume so HPD will work correctly after resume as well. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: Jerome Glisse <j.glisse@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-11-01drm/radeon/kms: allocate vram scratch page on 6xx+Alex Deucher
The vram scratch was originally only used on some 7xx asics to work around a hw bug. Allocate the scratch page on all 6xx+ radeons and set the MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR to point to it. We shouldn't ever hit it since we limit the system aperture to vram or vram and AGP, but better safe than sorry. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-18Merge tag 'v3.1-rc10' into drm-core-nextDave Airlie
There are a number of fixes in mainline required for code in -next, also there was a few conflicts I'd rather resolve myself. Signed-off-by: Dave Airlie <airlied@redhat.com> Conflicts: drivers/gpu/drm/radeon/evergreen.c drivers/gpu/drm/radeon/r600.c drivers/gpu/drm/radeon/radeon_asic.h
2011-10-18drm/radeon/kms: make r600-NI blit suspend code commonAlex Deucher
r600-NI shared the same blit suspend code. Clean it up and make it a shared function. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-18drm/radeon/kms: blit code commoningIlija Hadzic
factor out most of evergreen blit code and use the refactored code from r600 that is now common for both r600 and evergreen Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-18drm/radeon/kms: simplify evergreen blit codeIlija Hadzic
Covert 4k pages to multiples of 64x64x4 tiles. This is also more efficient than a scanline based approach from the MC's perspective. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-18drm/radeon: Remove more bogus inlines in the radeon driver.Andi Kleen
Remove bogus inlines in evergreen and r100. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-12drm/radeon: allow pcie gen2 speed on CaymanIlija Hadzic
Looks like the same pcie gen2 speed initialization for Evergreen also works on Cayman and seems to come up fine, so enable it if the module parameter says so Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-12drm/radeon: allow pcie gen2 speed on NIIlija Hadzic
Enabling pcie gen2 speed was skipped for Northern Islands AISCs, although it looks like it works just fine with the same initialization sequence used for evergreen. According to Alex D. gen2 init was skipped to prevent a crash that has been caused by some other bug that has been fixed in the meantime; so now it should be safe to enable it. Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-10-04drm/radeon/kms: fix channel_remap setup (v2)Alex Deucher
Most asics just use the hw default value which requires no explicit programming. For those that need a different value, the vbios will program it properly. As such, there's no need to program these registers explicitly in the driver. Changing MC_SHARED_CHREMAP requires a reload of all data in vram otherwise its contents will be scambled. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=40103 v2: drop now unused channel_remap functions. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-09-20Merge branch 'drm-nouveau-next' of ↵Dave Airlie
git://git.freedesktop.org/git/nouveau/linux-2.6 into drm-next * 'drm-nouveau-next' of git://git.freedesktop.org/git/nouveau/linux-2.6: (353 commits) drm/nouveau: remove allocations from gart populate() hook drm/nvc0/fb: slightly improve PMFB intr handling, move out of nvc0_graph.c drm/nvc0/fifo: avoid touching missing subfifos drm/nvd9/disp: bail out of mode_set_base if no fb bound to crtc drm/nvd9/disp: stub some more api hooks so we don't oops on resume drm/nouveau: fix printk typo in ioremap failure path drm/nvc0/pm: minor clock readback fixes drm/nv40/pm: execute memory reset script from vbios drm/nv50/gr: refactor initialisation drm/nouveau: if requested, try harder at disabling sysmem pushbufs drm/nv50/gr: enable ctxprog xfer only when we need it to save power drm/nouveau/dp: add support for displayport table 0x30 drm/nouveau/dp: return master dp table pointer too when looking up encoder drm/nouveau/bios: simplify U/d table hash matching func to just match drm/nouveau/dp: preserve non-pattern bits in DP_TRAINING_PATTERN_SET drm/nvc0/gr: remove MODULE_FIRMWARE() lines drm/nouveau/dp: use alternate lane mask for nvaf drm/nouveau/dp: link rate scripts are selected with a comparison table drm/nv40/pm: write nv40-specific reclocking routines drm/nv40/pm: parse geometric delta clock from vbios ...
2011-09-18drm/radeon/kms: Make GPU/CPU page size handling consistent in blit code (v2)Alex Deucher
The BO blit code inconsistenly handled the page size. This wasn't an issue on system with 4k pages since the GPU's page size is 4k as well. Switch the driver blit callbacks to take num pages in GPU page units. Fixes lemote mipsel systems using AMD rs780/rs880 chipsets. v2: incorporate suggestions from Michel. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-09-14drm/radeon: Don't read from CP ring write pointer registers.Michel Dänzer
Apparently this doesn't always work reliably, e.g. at resume time. Just initialize to 0, so the ring is considered empty. Tested with hibernation on Sumo and Cayman cards. Should fix https://bugs.launchpad.net/ubuntu/+source/linux/+bug/820746/ . Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-09-06drm/radeon: Print gart initialization details on all chipsetsTormod Volden
This was previously done for r300 only. Use %016llX instead of %08X for printing the table address. Also fix typos in gart warning messages. Signed-off-by: Tormod Volden <debian.tormod@gmail.com> Reviewed-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-09-02drm/radeon/kms: make sure pci max read request size is valid on evergreen+ (v2)Alex Deucher
If the bios or OS sets the pci max read request size to 0 or an invalid value (6,7), it can result in a hang or slowdown. Check and set it to something sane if it's invalid. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=42162 v2: use pci reg defines from include/linux/pci_regs.h Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@kernel.org Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-30drm/radeon/kms: evergreen & ni reset SPI block on CP resumeJerome Glisse
For some reason SPI block is in broken state after module unloading. This lead to broken rendering after reloading module. Fix this by reseting SPI block in CP resume function Signed-off-by: Jerome Glisse <jglisse@redhat.com Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-08-12drm/radeon/kms: make some watermark messages debug onlyAlex Deucher
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-07-26Merge branch 'drm-core-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (135 commits) drm/radeon/kms: fix DP training for DPEncoderService revision bigger than 1.1 drm/radeon/kms: add missing vddci setting on NI+ drm/radeon: Add a rmb() in IH processing drm/radeon: ATOM Endian fix for atombios_crtc_program_pll() drm/radeon: Fix the definition of RADEON_BUF_SWAP_32BIT drm/radeon: Do an MMIO read on interrupts when not uisng MSIs drm/radeon: Writeback endian fixes drm/radeon: Remove a bunch of useless _iomem casts drm/gem: add support for private objects DRM: clean up and document parsing of video= parameter DRM: Radeon: Fix section mismatch. drm: really make debug levels match in edid failure code drm/radeon/kms: fix i2c map for rv250/280 drm/nouveau/gr: disable fifo access and idle before suspend ctx unload drm/nouveau: pass flag to engine fini() method on suspend drm/nouveau: replace nv04_graph_fifo_access() use with direct reg bashing drm/nv40/gr: rewrite/split context takedown functions drm/nouveau: detect disabled device in irq handler and return IRQ_NONE drm/nouveau: ignore connector type when deciding digital/analog on DVI-I drm/nouveau: Add a quirk for Gigabyte NX86T ...
2011-07-25drm/radeon: Add a rmb() in IH processingBenjamin Herrenschmidt
We should have a read memory barrier between reading the WPTR from memory and reading ring entries based on that value (ie, we need to ensure both loads are done in order by the CPU). It could be argued that the MMIO reads in r600_ack_irq() might be enough to get that barrier but I prefer keeping an explicit one just in case. [airlied: fix evergreen + r/w mixup] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-07-25drm/radeon: Writeback endian fixesBenjamin Herrenschmidt
The writeback ring pointer and IH ring pointer are read using le32_to_cpu so we do not want the chip to byteswap them on big-endian. We still want to byteswap the ring itself and the IBs, so we don't touch that but we remove setting of the byteswap bits in CP_RB_RPTR_ADDR and IH_CNTL. In general, for things like that where we control all the accessors easily, we are better off doing the swap in SW rather than HW. Paradoxally, it does keep the code closer to x86 and avoid using poorly tested HW features. I also changed the use of RADEON_ to R600_ in a couple of cases to be more consistent with the surrounding code. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Michel Dänzer <michel@daenzer.net> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-07-18drm/radeon/kms: add info query for backend mapAlex Deucher
The 3D driver need to get the pipe to backend map to certain things. Add a query to get the info. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>