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* drm/i915: fix ioremap of a user address for non-root (CVE-2008-3831)Matthias Hopf2008-10-17
| | | | | | | | | | | | | Olaf Kirch noticed that the i915_set_status_page() function of the i915 kernel driver calls ioremap with an address offset that is supplied by userspace via ioctl. The function zeroes the mapped memory via memset and tells the hardware about the address. Turns out that access to that ioctl is not restricted to root so users could probably exploit that to do nasty things. We haven't tried to write actual exploit code though. It only affects the Intel G33 series and newer. Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: make CONFIG_DRM depend on CONFIG_SHMEM.Dave Airlie2008-10-17
| | | | | | This can be removed later when DRM doesn't depend on shmem. Signed-off-by: Dave Airlie <airlied@redhat.com>
* radeon: fix PCI bus mastering support enables.Alex Deucher2008-10-17
| | | | | | | | Someone noticed these registers moved around for later chips, so we redo the codepaths per-chip. PCIE chips don't appear to require explicit enables. Signed-off-by: Dave Airlie <airlied@redhat.com>
* radeon: add RS400 family support.Alex Deucher2008-10-17
| | | | | | This adds support for the RS400 family of IGPs for Intel CPUs. Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm/radeon: add support for RS740 IGP chipsets.Alex Deucher2008-10-17
| | | | | | This adds support for the HS2100 IGP chipset. Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: GM45 has GM965-style MCH setup.Eric Anholt2008-10-17
| | | | | | | Fixes tiling swizzling mode failures that manifest in glReadPixels(). Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Don't run retire work handler while suspendedKeith Packard2008-10-17
| | | | | | | | | | | | | At leavevt and lastclose time, cancel any pending retire work handler invocation, and keep the retire work handler from requeuing itself if it is currently running. This patch restructures i915_gem_idle to perform all of these tasks instead of having both leavevt and lastclose call a sequence of functions. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Map status page cached for chips with GTT-based HWS location.Keith Packard2008-10-17
| | | | | | | | | | | This should improve performance by avoiding uncached reads by the CPU (the point of having a status page), and may improve stability. This patch only affects G33, GM45 and G45 chips as those are the only ones using GTT-based HWS mappings. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Fix up ring initialization to cover G45 odditiesKeith Packard2008-10-17
| | | | | | | | | | | G45 appears quite sensitive to ring initialization register writes, sometimes leaving the HEAD register with the START register contents. Check to make sure HEAD is reset correctly when START is written, and fix it up, screaming loudly. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Use non-reserved status page index for breadcrumbKeith Packard2008-10-17
| | | | | | | | | Dwords 0 through 0x1f are reserved for use by the hardware. Move the GEM breadcrumb from 0x10 to 0x20 to keep out of this area. Signed-off-by: Keith Packard <keithp@keithp.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: Increment dev_priv->irq_received so i915_gem_interrupts count works.Eric Anholt2008-10-17
| | | | | Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: kill drm_device->irqJesse Barnes2008-10-17
| | | | | | | | | Like the last patch but adds a macro to get at the irq value instead of dereferencing pdev directly. Should make things easier for the BSD guys and if we ever support non-PCI devices. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: wbinvd is cache coherent.Dave Airlie2008-10-17
| | | | | | doing an ipi for the wbinvd case isn't necessary. Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: add missing return in error path.Dave Airlie2008-10-17
| | | | Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: fixup permissions on gem ioctls.Dave Airlie2008-10-17
| | | | | | init/entervt/leavevt should be root-only master ioctls. Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: Clean up many sparse warnings in i915.Eric Anholt2008-10-17
| | | | | Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: Use ioremap_wc in i915_driver instead of ioremap, since we always want WC.Eric Anholt2008-10-17
| | | | | | | | Fixes failure to map the ringbuffer when PAT tells us we don't get to do uncached on something that's already mapped WC, or something along those lines. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: G33-class hardware has a newer 965-style MCH (no DCC register).Eric Anholt2008-10-17
| | | | | | | | Fixes bad software fallback rendering in Mesa in dual-channel configurations. d9a2470012588dc5313a5ac8bb2f03575af00e99 Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: Avoid oops in GEM execbuffers with bad arguments.Eric Anholt2008-10-17
| | | | | Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* DRM: Return -EBADF on bad object in flink, and return curent name if it exists.Eric Anholt2008-10-17
| | | | | Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915 gem: install and uninstall irq handler in entervt and leavevt ioctls.Kristian Høgsberg2008-10-17
| | | | | | Signed-off-by: Kristian Høgsberg <krh@redhat.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Make use of sarea_priv conditional.Kristian Høgsberg2008-10-17
| | | | | | | | We fail ioctls that depend on the sarea_priv with EINVAL. Signed-off-by: Kristian Høgsberg <krh@redhat.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Use struct_mutex to protect ring in GEM mode.Eric Anholt2008-10-17
| | | | | | | | | | | In the conversion for GEM, we had stopped using the hardware lock to protect ring usage, since it was all internal to the DRM now. However, some paths weren't converted to using struct_mutex to prevent multiple threads from concurrently working on the ring, in particular between the vblank swap handler and ioctls. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Add chip set ID param.Kristian Høgsberg2008-10-17
| | | | | | Signed-off-by: Kristian Høgsberg <krh@redhat.com> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: Add GEM ("graphics execution manager") to i915 driver.Eric Anholt2008-10-17
| | | | | | | | | | | | | | | | GEM allows the creation of persistent buffer objects accessible by the graphics device through new ioctls for managing execution of commands on the device. The userland API is almost entirely driver-specific to ensure that any driver building on this model can easily map the interface to individual driver requirements. GEM is used by the 2d driver for managing its internal state allocations and will be used for pixmap storage to reduce memory consumption and enable zero-copy GLX_EXT_texture_from_pixmap, and in the 3d driver is used to enable GL_EXT_framebuffer_object and GL_ARB_pixel_buffer_object. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: Rework vblank-wait handling to allow interrupt reduction.Jesse Barnes2008-10-17
| | | | | | | | | | | | | | | Previously, drivers supporting vblank interrupt waits would run the interrupt all the time, or all the time that any 3d client was running, preventing the CPU from sleeping for long when the system was otherwise idle. Now, interrupts are disabled any time that no client is waiting on a vblank event. The new method uses vblank counters on the chipsets when the interrupts are turned off, rather than counting interrupts, so that we can continue to present accurate vblank numbers. Co-author: Michel Dänzer <michel@tungstengraphics.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm/cred: wrap task credential accesses in the drm driver.David Howells2008-10-17
| | | | | | | | | | | | | | | | Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: David Airlie <airlied@redhat.com>
* new chip name is GM45Jesse Barnes2008-10-17
| | | | | | | | | | Author: Zhenyu Wang <zhenyu.z.wang@intel.com> i915: official name for GM45 chipset Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
* separate i915 suspend/resume functions into their own fileJesse Barnes2008-10-17
| | | | | | | | | | | | | [Patch against drm-next. Consider this a trial balloon for our new Linux development model.] This is a big chunk of code. Separating it out makes it easier to change without churn on the main i915_drv.c file (and there will be churn as we fix bugs and add things like kernel mode setting). Also makes it easier to share this file with BSD. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
* radeon: fix writeback across suspend/resume.Dave Airlie2008-10-17
| | | | | | Make writeback not get disabled on resume. Signed-off-by: Dave Airlie <airlied@redhat.com>
* drm: fix sysfs error path.Dave Airlie2008-10-17
| | | | | | Pointed out by Roel Kluin on dri-devel. Signed-off-by: Dave Airlie <airlied@redhat.com>
* FB_SIS=m, DRM_SIS=y is not a legal configuration.Adrian Bunk2008-10-17
| | | | | | Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
* Add Intel ACPI IGD OpRegion supportMatthew Garrett2008-10-17
| | | | | | | | | This adds the support necessary for allowing ACPI backlight control to work on some newer Intel-based graphics systems. Tested on Thinkpad T61 and HP 2510p hardware. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
* i915: Initialize hardware status page at device load when possible.Keith Packard2008-10-17
| | | | | | | | Some chips were unstable with repeated setup/teardown of the hardware status page. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Track progress inside of batchbuffers for determining wedgedness.Keith Packard2008-10-17
| | | | | | | This avoids early termination for long-running commands. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Add support for MSI and interrupt mitigation.Eric Anholt2008-10-17
| | | | | | | | | | | Previous attempts at interrupt mitigation had been foiled by i915_wait_irq's failure to update the sarea seqno value when the status page indicated that the seqno had already been passed. MSI support has been seen to cut CPU costs by up to 40% in some workloads by avoiding other expensive interrupt handlers for frequent graphics interrupts. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Use more consistent names for regs, and store them in a separate file.Jesse Barnes2008-10-17
| | | | | Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: Ignore X server provided mmio addressKeith Packard2008-10-17
| | | | | | | It is already correctly detected by the kernel for use in suspend/resume. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* i915: remove settable use_mi_batchbuffer_startKeith Packard2008-10-17
| | | | | | | | The driver can know what hardware requires MI_BATCH_BUFFER vs MI_BATCH_BUFFER_START; there's no reason to let user mode configure this. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
* SiS DRM: fix a pointer cast warningDavid Howells2008-10-17
| | | | | | | | | | | Fix a pointer cast warning in the SIS DRM code. This was introduced in patch ce65a44de07f73ceda1749812b75086b7add408d. Signed-off-by: David Howells <dhowells@redhat.com> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
* SiS DRM: fix the memory allocator if the SIS FB is built as a moduleDavid Howells2008-10-17
| | | | | | | | | | | | Fix the SIS DRM memory allocator if the SIS FB built as a module. The SIS DRM code initialises the mm allocation hooks, but _only_ if the SIS FB is not built as a module because it depends on CONFIG_FB_SIS, and that's unset if the SIS FB is not built in. It must check CONFIG_FB_SIS_MODULE as well. Signed-off-by: David Howells <dhowells@redhat.com> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
* misc: replace __FUNCTION__ with __func__Harvey Harrison2008-10-16
| | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drm/radeon: downgrade debug message from info to debug.Dave Airlie2008-08-31
| | | | | | | | | If this triggers its bad, however some machines seem to have been triggering it for ages and we didn't know until we added the debug. So downgrade the debug now so people don't call this a regression. Signed-off-by: Dave Airlie <airlied@redhat.com>
* Merge branch 'drm-patches' of ↵Linus Torvalds2008-08-27
|\ | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: don't set the signal blocker on the master process. drm: don't call the vblank tasklet with irqs disabled. r300: Fix cliprect emit drm/radeon: r300_cmdbuf: Always emit INDX_BUFFER immediately after DRAW_INDEX radeon: fix some hard lockups on r3/4/500s
| * drm: don't set the signal blocker on the master process.Dave Airlie2008-08-24
| | | | | | | | | | | | | | | | | | | | | | | | There is a problem with debugging the X server and gdb crashes in the xkb startup code. This avoids the problem by allowing the master process to get signals. It should be safe as the signal blocker is mainly so that you can Ctrl-Z a 3D application without locking up the whole box. Ctrl-Z the X server isn't something many people do. Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm: don't call the vblank tasklet with irqs disabled.Thomas Hellstrom2008-08-24
| | | | | | | | | | | | | | | | If a specific tasklet shares data with irq context, it needs to take a private irq-blocking spinlock within the tasklet itself. Signed-off-by: Dave Airlie <airlied@redhat.com>
| * r300: Fix cliprect emitNicolai Haehnle2008-08-24
| | | | | | | | | | | | | | | | | | | | | | This makes our handling of cliprects sane. drm_clip_rect always has exclusiv bottom-right corners, but the hardware expects inclusive bottom-right corner so we adjust this here. This complements Michel Daenzer's commit 57aea290e1e0a26d1e74df6cff777eb9f03 to Mesa. See also http://bugs.freedesktop.org/show_bug.cgi?id=16123 Signed-off-by: Dave Airlie <airlied@redhat.com>
| * drm/radeon: r300_cmdbuf: Always emit INDX_BUFFER immediately after DRAW_INDEXNicolai Haehnle2008-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DRAW_INDEX writes a vertex count to VAP_VF_CNTL. Docs say that behaviour is undefined (i.e. lockups happen) when this write is not followed by the right number of vertex indices. Thus we used to do the wrong thing when drawing across many cliprects was necessary, because we emitted a sequence DRAW_INDEX, DRAW_INDEX, INDX_BUFFER, INDX_BUFFER instead of DRAW_INDEX, INDX_BUFFER, DRAW_INDEX, INDX_BUFFER The latter is what we're doing now and which ought to be correct. Signed-off-by: Dave Airlie <airlied@redhat.com>
| * radeon: fix some hard lockups on r3/4/500sJerome Glisse2008-08-24
| | | | | | | | | | | | | | | | This patch should fix hard lockup and convert them in softlockup (ie you can ssh the box but the gpu is busted and we are waiting in loop for it to come back to reason). Signed-off-by: Dave Airlie <airlied@redhat.com>
* | Remove newline from the description of module parametersNiels de Vos2008-08-01
|/ | | | | | | | | | | | | | | | | | | | Some module parameters with only one line have the '\n' at the end of the description. This is not needed nor wanted as after the description the type (i.e. int) is followed by a newline. Some modules contain a multi-line description, these are not affected by this patch. Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: John W. Linville <linville@tuxdriver.com> Cc: Ed L. Cashin <ecashin@coraid.com> Cc: Dave Airlie <airlied@linux.ie> Cc: Roland Dreier <rolandd@cisco.com> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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