fcbafdfd79
Server GPUs often have a VNC feature attached to allow remote console. The controller implementing this feature is usually not very powerful, and we can easily swamp it with work. This is made somewhat worse by damage over-reporting the size of the dirty region, and a whole lot worse by applications (or shells) that update the screen with identical pixel content as was already there. Fix this by double-buffering the shadow fb, using memcmp to identify dirty tiles on each update pass. Since both shadows are in host memory the memcmp is cheap, and worth it given the win in network bandwidth. The tile size is somewhat arbitrarily chosen to be one cacheline wide at 32bpp on Intel Core. By default we enable this behaviour for (a subset of) known server GPUs; the heuristic could use work. Signed-off-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*
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* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*
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* Author: Alan Hourihane <alanh@tungstengraphics.com>
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*
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*/
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#include <errno.h>
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#include <drm.h>
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#include <xf86drm.h>
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#include <xf86Crtc.h>
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#include <damage.h>
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#ifdef GLAMOR
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#define GLAMOR_FOR_XORG 1
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#include "glamor.h"
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#ifdef GLAMOR_HAS_GBM
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#include <gbm.h>
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#endif
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#endif
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#include "drmmode_display.h"
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#define DRV_ERROR(msg) xf86DrvMsg(pScrn->scrnIndex, X_ERROR, msg);
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#define MS_LOGLEVEL_DEBUG 4
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typedef enum {
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OPTION_SW_CURSOR,
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OPTION_DEVICE_PATH,
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OPTION_SHADOW_FB,
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OPTION_ACCEL_METHOD,
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OPTION_PAGEFLIP,
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OPTION_ZAPHOD_HEADS,
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OPTION_DOUBLE_SHADOW,
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} modesettingOpts;
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typedef struct
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{
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int fd;
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int fd_ref;
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unsigned long fd_wakeup_registered; /* server generation for which fd has been registered for wakeup handling */
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int fd_wakeup_ref;
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unsigned int assigned_crtcs;
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} modesettingEntRec, *modesettingEntPtr;
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typedef void (*ms_drm_handler_proc)(uint64_t frame,
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uint64_t usec,
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void *data);
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typedef void (*ms_drm_abort_proc)(void *data);
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/**
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* A tracked handler for an event that will hopefully be generated by
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* the kernel, and what to do when it is encountered.
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*/
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struct ms_drm_queue {
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struct xorg_list list;
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xf86CrtcPtr crtc;
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uint32_t seq;
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void *data;
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ScrnInfoPtr scrn;
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ms_drm_handler_proc handler;
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ms_drm_abort_proc abort;
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};
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typedef struct _modesettingRec {
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int fd;
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int Chipset;
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EntityInfoPtr pEnt;
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#if XSERVER_LIBPCIACCESS
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struct pci_device *PciInfo;
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#else
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pciVideoPtr PciInfo;
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PCITAG PciTag;
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#endif
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Bool noAccel;
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CloseScreenProcPtr CloseScreen;
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CreateWindowProcPtr CreateWindow;
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unsigned int SaveGeneration;
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CreateScreenResourcesProcPtr createScreenResources;
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ScreenBlockHandlerProcPtr BlockHandler;
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void *driver;
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drmmode_rec drmmode;
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drmEventContext event_context;
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/**
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* Page flipping stuff.
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* @{
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*/
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/** @} */
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DamagePtr damage;
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Bool dirty_enabled;
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uint32_t cursor_width, cursor_height;
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} modesettingRec, *modesettingPtr;
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#define modesettingPTR(p) ((modesettingPtr)((p)->driverPrivate))
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modesettingEntPtr ms_ent_priv(ScrnInfoPtr scrn);
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uint32_t ms_drm_queue_alloc(xf86CrtcPtr crtc,
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void *data,
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ms_drm_handler_proc handler,
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ms_drm_abort_proc abort);
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void ms_drm_abort(ScrnInfoPtr scrn,
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Bool (*match)(void *data, void *match_data),
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void *match_data);
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void ms_drm_abort_seq(ScrnInfoPtr scrn, uint32_t seq);
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Bool ms_crtc_on(xf86CrtcPtr crtc);
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xf86CrtcPtr ms_dri2_crtc_covering_drawable(DrawablePtr pDraw);
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xf86CrtcPtr ms_covering_crtc(ScrnInfoPtr scrn, BoxPtr box,
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xf86CrtcPtr desired, BoxPtr crtc_box_ret);
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int ms_get_crtc_ust_msc(xf86CrtcPtr crtc, CARD64 *ust, CARD64 *msc);
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uint32_t ms_crtc_msc_to_kernel_msc(xf86CrtcPtr crtc, uint64_t expect);
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uint64_t ms_kernel_msc_to_crtc_msc(xf86CrtcPtr crtc, uint32_t sequence);
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Bool ms_dri2_screen_init(ScreenPtr screen);
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void ms_dri2_close_screen(ScreenPtr screen);
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Bool ms_vblank_screen_init(ScreenPtr screen);
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void ms_vblank_close_screen(ScreenPtr screen);
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Bool ms_present_screen_init(ScreenPtr screen);
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