linux_dsm_epyc7002/drivers/gpu/drm
Alex Deucher d8f60cfc93 drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips (v3)
This enables the use of interrupts on r6xx/r7xx hardware.
Interrupts are implemented via a ring buffer.  The GPU adds
interrupts vectors to the ring and the host reads them off
in the interrupt handler.  The interrupt controller requires
firmware like the CP.  This firmware must be installed and
accessble to the firmware loader for interrupts to function.

MSIs don't seem to work on my RS780.  They work fine on all
my discrete cards.  I'm not sure about other RS780s or
RS880s.  I've disabled MSIs on RS780 and RS880, but it would
probably be worth checking on some other systems.

v2 - fix some checkpatch.pl problems;
     re-read the disp int status reg if we restart the ih;

v3 - remove the irq handler if r600_irq_init() fails;
     remove spinlock in r600_ih_ring_fini();
     move ih rb overflow check to r600_get_ih_wptr();
     move irq ack to separate function;

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-02 14:00:06 +10:00
..
i810 drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
i830 drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
i915 drm/i915: Fix CRT hotplug detect by checking really no channels attached 2009-11-25 12:10:18 -08:00
mga Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-09-22 07:51:45 -07:00
r128 drm/r128: Add test for initialisation to all ioctls that require it 2009-08-31 09:09:30 +10:00
radeon drm/radeon/kms: Add support for interrupts on r6xx/r7xx chips (v3) 2009-12-02 14:00:06 +10:00
savage drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
sis drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
tdfx
ttm Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-11-11 11:32:04 -08:00
via drm/via: Fix vblank IRQ on VIA hardware. 2009-07-15 16:00:07 +10:00
ati_pcigart.c drm/ati_pcigart: use memset_io to reset the memory 2009-03-13 14:24:14 +10:00
drm_agpsupport.c agp: switch AGP to use page array instead of unsigned long array 2009-06-19 10:21:42 +10:00
drm_auth.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_bufs.c drm: fix _DRM_GEM addmap error message 2009-09-18 14:34:06 +10:00
drm_cache.c drm: fix drm_cache.c for arch with no support. 2009-09-02 09:41:13 +10:00
drm_context.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_crtc_helper.c drm/kms: Init the CRTC info fields for modes forced from the command line. 2009-11-10 13:41:40 +10:00
drm_crtc.c drm: Delete the DRM_DEBUG_KMS in drm_mode_cursor_ioctl 2009-10-05 10:00:57 +10:00
drm_debugfs.c drm: drm_debugfs, check kmalloc retval 2009-07-15 15:55:37 +10:00
drm_dma.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_drawable.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_drv.c drm: remove root requirement from DRM_IOCTL_SET_VERSION (+ DRM_IOCTL_AUTH_MAGIC) 2009-08-19 15:51:55 +10:00
drm_edid.c drm: work around EDIDs with bad htotal/vtotal values 2009-11-24 13:01:53 +10:00
drm_encoder_slave.c drm: fixup include file in drm_encoder_slave 2009-08-13 13:31:54 +10:00
drm_fb_helper.c drm/fb: fix FBIOGET/PUT_VSCREENINFO pixel clock handling 2009-11-24 13:04:49 +10:00
drm_fops.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_gem.c drm: make sure page protections are updated after changing vm_flags 2009-11-24 13:02:30 +10:00
drm_hashtab.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_info.c drm: merge Linux master into HEAD 2009-03-28 20:22:18 -04:00
drm_ioc32.c drm: Only use DRM_IOCTL_UPDATE_DRAW compat wrapper for compat X86. 2009-03-13 14:24:04 +10:00
drm_ioctl.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_irq.c drm/vgaarb: add VGA arbitration support to the drm and kms. 2009-09-21 15:00:27 +10:00
drm_lock.c drm: Avoid client deadlocks when the master disappears. 2009-03-03 09:50:20 +10:00
drm_memory.c agp: switch AGP to use page array instead of unsigned long array 2009-06-19 10:21:42 +10:00
drm_mm.c drm: mm always protect change to unused_nodes with unused_lock spinlock 2009-11-24 13:02:18 +10:00
drm_modes.c drm/kms: start adding command line interface using fb. 2009-09-25 13:08:20 +10:00
drm_pci.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_proc.c drm: use proc_create_data() 2009-08-31 09:37:22 +10:00
drm_scatter.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_sman.c drm: Remove memory debugging infrastructure. 2009-06-18 13:00:33 -07:00
drm_stub.c drm: Move a dereference below a NULL test 2009-07-15 16:56:48 +10:00
drm_sysfs.c Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-09-21 08:10:09 -07:00
drm_vm.c const: mark struct vm_struct_operations 2009-09-27 11:39:25 -07:00
Kconfig drm/i915: Select CONFIG_SHMEM 2009-11-25 12:27:42 -08:00
Makefile drm/kms: fix kms helper license + Kconfig 2009-09-08 11:15:58 +10:00
README.drm

************************************************************
* For the very latest on DRI development, please see:      *
*     http://dri.freedesktop.org/                          *
************************************************************

The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).

The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:

    1. The DRM provides synchronized access to the graphics hardware via
       the use of an optimized two-tiered lock.

    2. The DRM enforces the DRI security policy for access to the graphics
       hardware by only allowing authenticated X11 clients access to
       restricted regions of memory.

    3. The DRM provides a generic DMA engine, complete with multiple
       queues and the ability to detect the need for an OpenGL context
       switch.

    4. The DRM is extensible via the use of small device-specific modules
       that rely extensively on the API exported by the DRM module.


Documentation on the DRI is available from:
    http://dri.freedesktop.org/wiki/Documentation
    http://sourceforge.net/project/showfiles.php?group_id=387
    http://dri.sourceforge.net/doc/

For specific information about kernel-level support, see:

    The Direct Rendering Manager, Kernel Support for the Direct Rendering
    Infrastructure
    http://dri.sourceforge.net/doc/drm_low_level.html

    Hardware Locking for the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/hardware_locking_low_level.html

    A Security Analysis of the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/security_low_level.html