forked from Minki/linux
b0e898ac55
So I've stumbled over drm_fasync and wondered what it does. Digging
that up is quite a story.
First I've had to read up on what this does and ended up being rather
bewildered why peopled loved signals so much back in the days that
they've created SIGIO just for that ...
Then I wondered how this ever works, and what that strange "No-op."
comment right above it should mean. After all calling the core fasync
helper is pretty obviously not a noop. After reading through the
kernels FASYNC implementation I've noticed that signals are only sent
out to the processes attached with FASYNC by calling kill_fasync.
No merged drm driver has ever done that.
After more digging I've found out that the only driver that ever used
this is the so called GAMMA driver. I've frankly never heard of such a
gpu brand ever before. Now FASYNC seems to not have been the only bad
thing with that driver, since Dave Airlie removed it from the drm
driver with prejudice:
commit 1430163b4bbf7b00367ea1066c1c5fe85dbeefed
Author: Dave Airlie <airlied@linux.ie>
Date: Sun Aug 29 12:04:35 2004 +0000
Drop GAMMA DRM from a great height ...
Long story short, the drm fasync support seems to be doing absolutely
nothing. And the only user of it was never merged into the upstream
kernel. And we don't need any fops->fasync callback since the fcntl
implementation in the kernel already implements the noop case
correctly.
So stop this particular cargo-cult and rip it all out.
v2: Kill drm_fasync assignments in rcar (newly added) and imx drivers
(somehow I've missed that one in staging). Also drop the reference in
the drm DocBook. ARM compile-fail reported by Rob Clark.
v3: Move the removal of dev->buf_asnyc assignment in drm_setup to this
patch here.
v4: Actually git add ... tsk.
Cc: Dave Airlie <airlied@linux.ie>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Rob Clark <robdclark@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
507 lines
17 KiB
C
507 lines
17 KiB
C
/**
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* \file radeon_drv.c
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* ATI Radeon driver
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*
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* \author Gareth Hughes <gareth@valinux.com>
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*/
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/*
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <drm/drmP.h>
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#include <drm/radeon_drm.h>
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#include "radeon_drv.h"
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#include <drm/drm_pciids.h>
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#include <linux/console.h>
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#include <linux/module.h>
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/*
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* KMS wrapper.
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* - 2.0.0 - initial interface
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* - 2.1.0 - add square tiling interface
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* - 2.2.0 - add r6xx/r7xx const buffer support
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* - 2.3.0 - add MSPOS + 3D texture + r500 VAP regs
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* - 2.4.0 - add crtc id query
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* - 2.5.0 - add get accel 2 to work around ddx breakage for evergreen
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* - 2.6.0 - add tiling config query (r6xx+), add initial HiZ support (r300->r500)
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* 2.7.0 - fixups for r600 2D tiling support. (no external ABI change), add eg dyn gpr regs
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* 2.8.0 - pageflip support, r500 US_FORMAT regs. r500 ARGB2101010 colorbuf, r300->r500 CMASK, clock crystal query
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* 2.9.0 - r600 tiling (s3tc,rgtc) working, SET_PREDICATION packet 3 on r600 + eg, backend query
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* 2.10.0 - fusion 2D tiling
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* 2.11.0 - backend map, initial compute support for the CS checker
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* 2.12.0 - RADEON_CS_KEEP_TILING_FLAGS
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* 2.13.0 - virtual memory support, streamout
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* 2.14.0 - add evergreen tiling informations
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* 2.15.0 - add max_pipes query
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* 2.16.0 - fix evergreen 2D tiled surface calculation
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* 2.17.0 - add STRMOUT_BASE_UPDATE for r7xx
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* 2.18.0 - r600-eg: allow "invalid" DB formats
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* 2.19.0 - r600-eg: MSAA textures
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* 2.20.0 - r600-si: RADEON_INFO_TIMESTAMP query
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* 2.21.0 - r600-r700: FMASK and CMASK
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* 2.22.0 - r600 only: RESOLVE_BOX allowed
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* 2.23.0 - allow STRMOUT_BASE_UPDATE on RS780 and RS880
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* 2.24.0 - eg only: allow MIP_ADDRESS=0 for MSAA textures
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* 2.25.0 - eg+: new info request for num SE and num SH
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* 2.26.0 - r600-eg: fix htile size computation
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* 2.27.0 - r600-SI: Add CS ioctl support for async DMA
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* 2.28.0 - r600-eg: Add MEM_WRITE packet support
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* 2.29.0 - R500 FP16 color clear registers
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* 2.30.0 - fix for FMASK texturing
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* 2.31.0 - Add fastfb support for rs690
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* 2.32.0 - new info request for rings working
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* 2.33.0 - Add SI tiling mode array query
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* 2.34.0 - Add CIK tiling mode array query
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*/
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#define KMS_DRIVER_MAJOR 2
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#define KMS_DRIVER_MINOR 34
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#define KMS_DRIVER_PATCHLEVEL 0
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int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
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int radeon_driver_unload_kms(struct drm_device *dev);
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void radeon_driver_lastclose_kms(struct drm_device *dev);
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int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv);
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void radeon_driver_postclose_kms(struct drm_device *dev,
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struct drm_file *file_priv);
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void radeon_driver_preclose_kms(struct drm_device *dev,
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struct drm_file *file_priv);
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int radeon_suspend_kms(struct drm_device *dev, pm_message_t state);
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int radeon_resume_kms(struct drm_device *dev);
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u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc);
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int radeon_enable_vblank_kms(struct drm_device *dev, int crtc);
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void radeon_disable_vblank_kms(struct drm_device *dev, int crtc);
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int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
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int *max_error,
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struct timeval *vblank_time,
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unsigned flags);
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void radeon_driver_irq_preinstall_kms(struct drm_device *dev);
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int radeon_driver_irq_postinstall_kms(struct drm_device *dev);
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void radeon_driver_irq_uninstall_kms(struct drm_device *dev);
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irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS);
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int radeon_gem_object_init(struct drm_gem_object *obj);
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void radeon_gem_object_free(struct drm_gem_object *obj);
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int radeon_gem_object_open(struct drm_gem_object *obj,
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struct drm_file *file_priv);
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void radeon_gem_object_close(struct drm_gem_object *obj,
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struct drm_file *file_priv);
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extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
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int *vpos, int *hpos);
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extern const struct drm_ioctl_desc radeon_ioctls_kms[];
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extern int radeon_max_kms_ioctl;
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int radeon_mmap(struct file *filp, struct vm_area_struct *vma);
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int radeon_mode_dumb_mmap(struct drm_file *filp,
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struct drm_device *dev,
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uint32_t handle, uint64_t *offset_p);
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int radeon_mode_dumb_create(struct drm_file *file_priv,
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struct drm_device *dev,
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struct drm_mode_create_dumb *args);
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struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj);
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struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
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size_t size,
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struct sg_table *sg);
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int radeon_gem_prime_pin(struct drm_gem_object *obj);
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void radeon_gem_prime_unpin(struct drm_gem_object *obj);
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void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
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void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
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extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd,
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unsigned long arg);
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#if defined(CONFIG_DEBUG_FS)
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int radeon_debugfs_init(struct drm_minor *minor);
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void radeon_debugfs_cleanup(struct drm_minor *minor);
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#endif
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/* atpx handler */
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#if defined(CONFIG_VGA_SWITCHEROO)
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void radeon_register_atpx_handler(void);
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void radeon_unregister_atpx_handler(void);
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#else
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static inline void radeon_register_atpx_handler(void) {}
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static inline void radeon_unregister_atpx_handler(void) {}
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#endif
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int radeon_no_wb;
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int radeon_modeset = -1;
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int radeon_dynclks = -1;
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int radeon_r4xx_atom = 0;
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int radeon_agpmode = 0;
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int radeon_vram_limit = 0;
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int radeon_gart_size = 512; /* default gart size */
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int radeon_benchmarking = 0;
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int radeon_testing = 0;
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int radeon_connector_table = 0;
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int radeon_tv = 1;
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int radeon_audio = 0;
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int radeon_disp_priority = 0;
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int radeon_hw_i2c = 0;
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int radeon_pcie_gen2 = -1;
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int radeon_msi = -1;
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int radeon_lockup_timeout = 10000;
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int radeon_fastfb = 0;
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int radeon_dpm = -1;
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int radeon_aspm = -1;
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MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
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module_param_named(no_wb, radeon_no_wb, int, 0444);
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MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
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module_param_named(modeset, radeon_modeset, int, 0400);
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MODULE_PARM_DESC(dynclks, "Disable/Enable dynamic clocks");
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module_param_named(dynclks, radeon_dynclks, int, 0444);
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MODULE_PARM_DESC(r4xx_atom, "Enable ATOMBIOS modesetting for R4xx");
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module_param_named(r4xx_atom, radeon_r4xx_atom, int, 0444);
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MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing");
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module_param_named(vramlimit, radeon_vram_limit, int, 0600);
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MODULE_PARM_DESC(agpmode, "AGP Mode (-1 == PCI)");
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module_param_named(agpmode, radeon_agpmode, int, 0444);
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MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32, 64, etc)");
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module_param_named(gartsize, radeon_gart_size, int, 0600);
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MODULE_PARM_DESC(benchmark, "Run benchmark");
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module_param_named(benchmark, radeon_benchmarking, int, 0444);
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MODULE_PARM_DESC(test, "Run tests");
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module_param_named(test, radeon_testing, int, 0444);
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MODULE_PARM_DESC(connector_table, "Force connector table");
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module_param_named(connector_table, radeon_connector_table, int, 0444);
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MODULE_PARM_DESC(tv, "TV enable (0 = disable)");
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module_param_named(tv, radeon_tv, int, 0444);
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MODULE_PARM_DESC(audio, "Audio enable (1 = enable)");
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module_param_named(audio, radeon_audio, int, 0444);
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MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 = normal, 2 = high)");
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module_param_named(disp_priority, radeon_disp_priority, int, 0444);
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MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
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module_param_named(hw_i2c, radeon_hw_i2c, int, 0444);
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MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (-1 = auto, 0 = disable, 1 = enable)");
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module_param_named(pcie_gen2, radeon_pcie_gen2, int, 0444);
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MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
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module_param_named(msi, radeon_msi, int, 0444);
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MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (defaul 10000 = 10 seconds, 0 = disable)");
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module_param_named(lockup_timeout, radeon_lockup_timeout, int, 0444);
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MODULE_PARM_DESC(fastfb, "Direct FB access for IGP chips (0 = disable, 1 = enable)");
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module_param_named(fastfb, radeon_fastfb, int, 0444);
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MODULE_PARM_DESC(dpm, "DPM support (1 = enable, 0 = disable, -1 = auto)");
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module_param_named(dpm, radeon_dpm, int, 0444);
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MODULE_PARM_DESC(aspm, "ASPM support (1 = enable, 0 = disable, -1 = auto)");
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module_param_named(aspm, radeon_aspm, int, 0444);
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static struct pci_device_id pciidlist[] = {
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radeon_PCI_IDS
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};
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MODULE_DEVICE_TABLE(pci, pciidlist);
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#ifdef CONFIG_DRM_RADEON_UMS
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static int radeon_suspend(struct drm_device *dev, pm_message_t state)
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{
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drm_radeon_private_t *dev_priv = dev->dev_private;
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if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
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return 0;
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/* Disable *all* interrupts */
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if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
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RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
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RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
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return 0;
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}
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static int radeon_resume(struct drm_device *dev)
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{
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drm_radeon_private_t *dev_priv = dev->dev_private;
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if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
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return 0;
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/* Restore interrupt registers */
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if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
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RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
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RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
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return 0;
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}
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static const struct file_operations radeon_driver_old_fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.release = drm_release,
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.unlocked_ioctl = drm_ioctl,
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.mmap = drm_mmap,
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.poll = drm_poll,
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.read = drm_read,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = radeon_compat_ioctl,
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#endif
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.llseek = noop_llseek,
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};
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static struct drm_driver driver_old = {
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.driver_features =
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DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
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DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED,
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.dev_priv_size = sizeof(drm_radeon_buf_priv_t),
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.load = radeon_driver_load,
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.firstopen = radeon_driver_firstopen,
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.open = radeon_driver_open,
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.preclose = radeon_driver_preclose,
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.postclose = radeon_driver_postclose,
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.lastclose = radeon_driver_lastclose,
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.unload = radeon_driver_unload,
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.suspend = radeon_suspend,
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.resume = radeon_resume,
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.get_vblank_counter = radeon_get_vblank_counter,
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.enable_vblank = radeon_enable_vblank,
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.disable_vblank = radeon_disable_vblank,
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.master_create = radeon_master_create,
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.master_destroy = radeon_master_destroy,
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.irq_preinstall = radeon_driver_irq_preinstall,
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.irq_postinstall = radeon_driver_irq_postinstall,
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.irq_uninstall = radeon_driver_irq_uninstall,
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.irq_handler = radeon_driver_irq_handler,
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.ioctls = radeon_ioctls,
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.dma_ioctl = radeon_cp_buffers,
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.fops = &radeon_driver_old_fops,
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.name = DRIVER_NAME,
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.desc = DRIVER_DESC,
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.date = DRIVER_DATE,
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.major = DRIVER_MAJOR,
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.minor = DRIVER_MINOR,
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.patchlevel = DRIVER_PATCHLEVEL,
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};
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#endif
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static struct drm_driver kms_driver;
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static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
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{
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struct apertures_struct *ap;
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bool primary = false;
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ap = alloc_apertures(1);
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if (!ap)
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return -ENOMEM;
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ap->ranges[0].base = pci_resource_start(pdev, 0);
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ap->ranges[0].size = pci_resource_len(pdev, 0);
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#ifdef CONFIG_X86
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primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
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#endif
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remove_conflicting_framebuffers(ap, "radeondrmfb", primary);
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kfree(ap);
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return 0;
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}
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static int radeon_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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int ret;
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/* Get rid of things like offb */
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ret = radeon_kick_out_firmware_fb(pdev);
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if (ret)
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return ret;
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return drm_get_pci_dev(pdev, ent, &kms_driver);
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}
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static void
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radeon_pci_remove(struct pci_dev *pdev)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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drm_put_dev(dev);
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}
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static int
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radeon_pci_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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return radeon_suspend_kms(dev, state);
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}
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static int
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radeon_pci_resume(struct pci_dev *pdev)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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return radeon_resume_kms(dev);
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}
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static const struct file_operations radeon_driver_kms_fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.release = drm_release,
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.unlocked_ioctl = drm_ioctl,
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.mmap = radeon_mmap,
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.poll = drm_poll,
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.read = drm_read,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = radeon_kms_compat_ioctl,
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#endif
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};
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static struct drm_driver kms_driver = {
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.driver_features =
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DRIVER_USE_AGP | DRIVER_USE_MTRR |
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DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
|
|
DRIVER_PRIME,
|
|
.dev_priv_size = 0,
|
|
.load = radeon_driver_load_kms,
|
|
.open = radeon_driver_open_kms,
|
|
.preclose = radeon_driver_preclose_kms,
|
|
.postclose = radeon_driver_postclose_kms,
|
|
.lastclose = radeon_driver_lastclose_kms,
|
|
.unload = radeon_driver_unload_kms,
|
|
.suspend = radeon_suspend_kms,
|
|
.resume = radeon_resume_kms,
|
|
.get_vblank_counter = radeon_get_vblank_counter_kms,
|
|
.enable_vblank = radeon_enable_vblank_kms,
|
|
.disable_vblank = radeon_disable_vblank_kms,
|
|
.get_vblank_timestamp = radeon_get_vblank_timestamp_kms,
|
|
.get_scanout_position = radeon_get_crtc_scanoutpos,
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
.debugfs_init = radeon_debugfs_init,
|
|
.debugfs_cleanup = radeon_debugfs_cleanup,
|
|
#endif
|
|
.irq_preinstall = radeon_driver_irq_preinstall_kms,
|
|
.irq_postinstall = radeon_driver_irq_postinstall_kms,
|
|
.irq_uninstall = radeon_driver_irq_uninstall_kms,
|
|
.irq_handler = radeon_driver_irq_handler_kms,
|
|
.ioctls = radeon_ioctls_kms,
|
|
.gem_init_object = radeon_gem_object_init,
|
|
.gem_free_object = radeon_gem_object_free,
|
|
.gem_open_object = radeon_gem_object_open,
|
|
.gem_close_object = radeon_gem_object_close,
|
|
.dumb_create = radeon_mode_dumb_create,
|
|
.dumb_map_offset = radeon_mode_dumb_mmap,
|
|
.dumb_destroy = drm_gem_dumb_destroy,
|
|
.fops = &radeon_driver_kms_fops,
|
|
|
|
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
|
|
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
|
|
.gem_prime_export = drm_gem_prime_export,
|
|
.gem_prime_import = drm_gem_prime_import,
|
|
.gem_prime_pin = radeon_gem_prime_pin,
|
|
.gem_prime_unpin = radeon_gem_prime_unpin,
|
|
.gem_prime_get_sg_table = radeon_gem_prime_get_sg_table,
|
|
.gem_prime_import_sg_table = radeon_gem_prime_import_sg_table,
|
|
.gem_prime_vmap = radeon_gem_prime_vmap,
|
|
.gem_prime_vunmap = radeon_gem_prime_vunmap,
|
|
|
|
.name = DRIVER_NAME,
|
|
.desc = DRIVER_DESC,
|
|
.date = DRIVER_DATE,
|
|
.major = KMS_DRIVER_MAJOR,
|
|
.minor = KMS_DRIVER_MINOR,
|
|
.patchlevel = KMS_DRIVER_PATCHLEVEL,
|
|
};
|
|
|
|
static struct drm_driver *driver;
|
|
static struct pci_driver *pdriver;
|
|
|
|
#ifdef CONFIG_DRM_RADEON_UMS
|
|
static struct pci_driver radeon_pci_driver = {
|
|
.name = DRIVER_NAME,
|
|
.id_table = pciidlist,
|
|
};
|
|
#endif
|
|
|
|
static struct pci_driver radeon_kms_pci_driver = {
|
|
.name = DRIVER_NAME,
|
|
.id_table = pciidlist,
|
|
.probe = radeon_pci_probe,
|
|
.remove = radeon_pci_remove,
|
|
.suspend = radeon_pci_suspend,
|
|
.resume = radeon_pci_resume,
|
|
};
|
|
|
|
static int __init radeon_init(void)
|
|
{
|
|
#ifdef CONFIG_VGA_CONSOLE
|
|
if (vgacon_text_force() && radeon_modeset == -1) {
|
|
DRM_INFO("VGACON disable radeon kernel modesetting.\n");
|
|
radeon_modeset = 0;
|
|
}
|
|
#endif
|
|
/* set to modesetting by default if not nomodeset */
|
|
if (radeon_modeset == -1)
|
|
radeon_modeset = 1;
|
|
|
|
if (radeon_modeset == 1) {
|
|
DRM_INFO("radeon kernel modesetting enabled.\n");
|
|
driver = &kms_driver;
|
|
pdriver = &radeon_kms_pci_driver;
|
|
driver->driver_features |= DRIVER_MODESET;
|
|
driver->num_ioctls = radeon_max_kms_ioctl;
|
|
radeon_register_atpx_handler();
|
|
|
|
} else {
|
|
#ifdef CONFIG_DRM_RADEON_UMS
|
|
DRM_INFO("radeon userspace modesetting enabled.\n");
|
|
driver = &driver_old;
|
|
pdriver = &radeon_pci_driver;
|
|
driver->driver_features &= ~DRIVER_MODESET;
|
|
driver->num_ioctls = radeon_max_ioctl;
|
|
#else
|
|
DRM_ERROR("No UMS support in radeon module!\n");
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
/* let modprobe override vga console setting */
|
|
return drm_pci_init(driver, pdriver);
|
|
}
|
|
|
|
static void __exit radeon_exit(void)
|
|
{
|
|
drm_pci_exit(driver, pdriver);
|
|
radeon_unregister_atpx_handler();
|
|
}
|
|
|
|
module_init(radeon_init);
|
|
module_exit(radeon_exit);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL and additional rights");
|