aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/hw/xfree86/doc
diff options
context:
space:
mode:
Diffstat (limited to 'xorg-server/hw/xfree86/doc')
-rw-r--r--xorg-server/hw/xfree86/doc/README.modes947
-rw-r--r--xorg-server/hw/xfree86/doc/ddxDesign.xml60
-rw-r--r--xorg-server/hw/xfree86/doc/exa-driver.txt9
3 files changed, 480 insertions, 536 deletions
diff --git a/xorg-server/hw/xfree86/doc/README.modes b/xorg-server/hw/xfree86/doc/README.modes
index da9d41eb5..ea228e592 100644
--- a/xorg-server/hw/xfree86/doc/README.modes
+++ b/xorg-server/hw/xfree86/doc/README.modes
@@ -1,474 +1,473 @@
- Multi-monitor Mode Setting APIs
- Keith Packard, <keithp@keithp.com
- 6 March 2007
-
-1. Introduction
-
-This document describes a set of mode setting APIs added in X server version
-1.3 that support multiple monitors per card. These interfaces expose the
-underlying hardware CRTC and output concepts to the xf86 DDX layer so that
-the implementation of initial server setup and mode changes through
-extensions can be shared across drivers. In addition, these new interfaces
-support a new configuration mechanism as well which allows each monitor to
-be customized separately providing a consistent cross-driver configuration
-mechanism that supports the full range of output features.
-
-All of the code implementing this interface can be found in hw/xfree86/modes
-in the X server sources.
-
-2. Overview
-
-This document describes both the driver API and the configuration data
-placed in xorg.conf; these are entirely separate as the driver has no
-interaction with the configuration information at all. Much of the structure
-here is cloned from the RandR extension version 1.2 additions which deal
-with the same kinds of information.
-
-2.1 API overview
-
-The mode setting API is expressed through two new driver-visible objects,
-the 'CRTC' (xf86CrtcRec) and the 'Output' (xf86OutputRec). A CRTC refers to
-hardware within the video system that can scan a subset of the framebuffer
-and generate a video signal. An Output receives that signal and transmits it
-to a monitor, projector or other device.
-
-The xf86CrtcRec and xf86OutputRec contain a small amount of state data
-related to the object along with a pointer to a set of functions provided by
-the driver that manipulate the object in fairly simple ways.
-
-To emulate older behaviour, one of the outputs is picked as the 'compat'
-output; this output changes over time as outputs are detected and used, the
-goal is to always have one 'special' output which is used for operations
-which need a single defined monitor (like XFree86-VidModeExtension mode
-setting, RandR 1.1 mode setting, DDC property setting, etc.).
-
-2.1.1 Output overview
-
-As outputs are connected to monitors, they hold a list of modes supported by
-the monitor. If the monitor and output support DDC, then the list of modes
-generally comes from the EDID data in the monitor. Otherwise, the server
-uses the standard VESA modes, pruned by monitor timing. If the configuration
-file doesn't contain monitor timing data, the server uses default timing
-information which supports 640x480, 800x600 and 1024x768 all with a 60Hz
-refresh rate.
-
-As hardware often limits possible configuration combinations, each output
-knows the set of CRTCs that it can be connected to as well as the set of
-other outputs which can be simutaneously connected to a CRTC.
-
-2.1.2 CRTC overview
-
-CRTCs serve only to stream frame buffer data to outputs using a mode line.
-Ideally, they would not be presented to the user at all, and in fact the
-configuration file doesn't expose them. The RandR 1.2 protocol does, but the
-hope there is that client-side applications will hide them carefully away.
-
-Each crtc has an associated cursor, along with the current configuration.
-All of the data needed to determine valid configurations is contained within
-the Outputs.
-
-2.2 Configuration overview
-
-As outputs drive monitors, the "Monitor" section has been repurposed to
-define their configuration. This provides for a bit more syntax than
-the large list of driver-specific options that were used in the past for
-similar configuration.
-
-However, the existing "Monitor" section referenced by the active "Screen"
-section no longer has any use at all; some sensible meaning for this
-parameter is needed now that a Screen can have multiple Monitors.
-
-3. Public Functions
-
-3.1 PreInit functions
-
-These functions should be used during the driver PreInit phase, they are
-arranged in the order they should be invoked.
-
- void
- xf86CrtcConfigInit (ScrnInfoPtr scrn
- const xf86CrtcConfigFuncsRec *funcs)
-
-This function allocates and initializes structures needed to track CRTC and
-Output state.
-
- void
- xf86CrtcSetSizeRange (ScrnInfoPtr scrn,
- int minWidth, int minHeight,
- int maxWidth, int maxHeight)
-
-This sets the range of screen sizes supported by the driver.
-
- xf86CrtcPtr
- xf86CrtcCreate (ScrnInfoPtr scrn,
- const xf86CrtcFuncsRec *funcs)
-
-Create one CRTC object. See the discussion below for a description of the
-contents of the xf86CrtcFuncsRec. Note that this is done in PreInit, so it
-should not be re-invoked at each server generation. Create one of these for
-each CRTC present in the hardware.
-
- xf86OutputPtr
- xf86OutputCreate (ScrnInfoPtr scrn,
- const xf86OutputFuncsRec *funcs,
- const char *name)
-
-Create one Output object. See the discussion below for a description of the
-contents of the xf86OutputFuncsRec. This is also called from PreInit and
-need not be re-invoked at each ScreenInit time. An Output should be created
-for every Output present in the hardware, not just for outputs which have
-detected monitors.
-
- Bool
- xf86OutputRename (xf86OutputPtr output, const char *name)
-
-If necessary, the name of an output can be changed after it is created using
-this function.
-
- Bool
- xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)
-
-Using the resources provided, and the configuration specified by the user,
-this function computes an initial configuration for the server. It tries to
-enable as much hardware as possible using some fairly simple heuristics.
-
-The 'canGrow' parameter indicates that the frame buffer does not have a fixed
-size (fixed size frame buffers are required by XAA). When the frame buffer
-has a fixed size, the configuration selects a 'reasonablely large' frame
-buffer so that common reconfiguration options are possible. For resizable
-frame buffers, the frame buffer is set to the smallest size that encloses
-the desired configuration.
-
-3.2 ScreenInit functions
-
-These functions should be used during the driver ScreenInit phase.
-
- Bool
- xf86DiDGAInit (ScreenPtr screen, unsigned long dga_address)
-
-This function provides driver-independent accelerated DGA support for some
-of the DGA operations; using this, the driver can avoid needing to implement
-any of the rest of DGA.
-
- Bool
- xf86SaveScreen(ScreenPtr pScreen, int mode)
-
-Stick this in pScreen->SaveScreen and the core X screen saver will be
-implemented by disabling outputs and crtcs using their dpms functions.
-
- void
- xf86DPMSSet(ScrnInfoPtr scrn, int mode, int flags)
-
-Pass this function to xf86DPMSInit and all DPMS mode switching will be
-managed by using the dpms functions provided by the Outputs and CRTCs.
-
- Bool
- xf86CrtcScreenInit (ScreenPtr screen)
-
-This function completes the screen initialization process for the crtc and
-output objects. Call it near the end of the ScreenInit function, after the
-frame buffer and acceleration layers have been added.
-
-3.3 EnterVT functions
-
-Functions used during EnterVT, or whenever the current configuration needs
-to be applied to the hardware.
-
- Bool
- xf86SetDesiredModes (ScrnInfoPtr scrn)
-
-xf86InitialConfiguration selects the desired configuration at PreInit time;
-when the server finally hits ScreenInit, xf86SetDesiredModes is used by the
-driver to take that configuration and apply it to the hardware. In addition,
-successful mode selection at other times updates the configuration that will
-be used by this function, so LeaveVT/EnterVT pairs can simply invoke this
-and return to the previous configuration.
-
-3.4 SwitchMode functions
-
-Functions called from the pScrn->SwitchMode hook, which is used by the
-XFree86-VidModeExtension and the keypad mode switch commands.
-
- Bool
- xf86SetSingleMode (ScrnInfoPtr scrn,
- DisplayModePtr desired,
- Rotation rotation)
-
-This function applies the specified mode to all active outputs. Which is to
-say, it picks reasonable modes for all active outputs, attempting to get the
-screen to the specified size while not breaking anything that is currently
-working.
-
-3.7 get_modes functions
-
-Functions called during output->get_modes to help build lists of modes
-
- xf86MonPtr
- xf86OutputGetEDID (xf86OutputPtr output, I2CBusPtr pDDCBus)
-
-This returns the EDID data structure for the 'output' using the I2C bus
-'pDDCBus'. This has no effect on 'output' itself.
-
- void
- xf86OutputSetEDID (xf86OutputPtr output, xf86MonPtr edid_mon)
-
-Once the EDID data has been fetched, this call applies the EDID data to the
-output object, setting the physical size and also various properties, like
-the DDC root window property (when output is the 'compat' output), and the
-RandR 1.2 EDID output properties.
-
- DisplayModePtr
- xf86OutputGetEDIDModes (xf86OutputPtr output)
-
-Given an EDID data structure, this function computes a list of suitable
-modes. This function also applies a sequence of 'quirks' during this process
-so that the returned modes may not actually match the mode data present in
-the EDID data.
-
-3.6 Other functions
-
-These remaining functions in the API can be used by the driver as needed.
-
- Bool
- xf86CrtcSetMode (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation,
- int x, int y)
-
-Applies a mode to a CRTC. All of the outputs which are currently using the
-specified CRTC are included in the mode setting process. 'x' and 'y' are the
-offset within the frame buffer that the crtc is placed at. No checking is
-done in this function to ensure that the mode is usable by the active
-outputs.
-
- void
- xf86ProbeOutputModes (ScrnInfoPtr pScrn, int maxX, int maxY)
-
-This discards the mode lists for all outputs, re-detects monitor presence
-and then acquires new mode lists for all monitors which are not disconnected.
-Monitor configuration data is used to modify the mode lists returned by the
-outputs. 'maxX' and 'maxY' limit the maximum size modes that will be
-returned.
-
- void
- xf86SetScrnInfoModes (ScrnInfoPtr pScrn)
-
-This copies the 'compat' output mode list into the pScrn modes list which is
-used by the XFree86-VidModeExtension and the keypad mode switching
-operations. The current 'desired' mode for the CRTC associated with the
-'compat' output is placed first in this list to indicate the current mode.
-Usually, the driver won't need to call this function as
-xf86InitialConfiguration will do so automatically, as well as any RandR
-functions which reprobe for modes. However, if the driver reprobes for modes
-at other times using xf86ProbeOutputModes, this function needs to be called.
-
- Bool
- xf86DiDGAReInit (ScreenPtr pScreen)
-
-This is similar to xf86SetScrnInfoModes, but it applies the 'compat' output
-mode list to the set of modes advertised by the DGA extension; it needs to
-be called whenever xf86ProbeOutputModes is invoked.
-
- void
- xf86DisableUnusedFunctions(ScrnInfoPtr pScrn)
-
-After any sequence of calls using xf86CrtcSetMode, this function cleans up
-any leftover Output and CRTC objects by disabling them, saving power. It is
-safe to call this whenever the server is running as it only disables objects
-which are not currently in use.
-
-4. CRTC operations
-
-4.1 CRTC functions
-
-These functions provide an abstract interface for the CRTC object; most
-manipulation of the CRTC object is done through these functions.
-
- void
- crtc->funcs->dpms (xf86CrtcPtr crtc, int mode)
-
-Where 'mode' is one of DPMSModeOff, DPMSModeSuspend, DPMSModeStandby or
-DPMSModeOn. This requests that the crtc go to the specified power state.
-When changing power states, the output dpms functions are invoked before the
-crtc dpms functions.
-
- void
- crtc->funcs->save (xf86CrtcPtr crtc)
-
- void
- crtc->funcs->restore (xf86CrtcPtr crtc)
-
-Preserve/restore any register contents related to the CRTC. These are
-strictly a convenience for the driver writer; if the existing driver has
-fully operation save/restore functions, you need not place any additional
-code here. In particular, the server itself never uses this function.
-
- Bool
- crtc->funcs->lock (xf86CrtcPtr crtc)
-
- void
- crtc->funcs->unlock (xf86CrtcPtr crtc)
-
-These functions are invoked around mode setting operations; the intent is
-that DRI locking be done here to prevent DRI applications from manipulating
-the hardware while the server is busy changing the output configuration. If
-the lock function returns FALSE, the unlock function will not be invoked.
-
- Bool
- crtc->funcs->mode_fixup (xf86CrtcPtr crtc,
- DisplayModePtr mode,
- DisplayModePtr adjusted_mode)
-
-This call gives the CRTC a chance to see what mode will be set and to
-comment on the mode by changing 'adjusted_mode' as needed. This function
-shall not modify the state of the crtc hardware at all. If the CRTC cannot
-accept this mode, this function may return FALSE.
-
- void
- crtc->funcs->prepare (xf86CrtcPtr crtc)
-
-This call is made just before the mode is set to make the hardware ready for
-the operation. A usual function to perform here is to disable the crtc so
-that mode setting can occur with clocks turned off and outputs deactivated.
-
- void
- crtc->funcs->mode_set (xf86CrtcPtr crtc,
- DisplayModePtr mode,
- DisplayModePtr adjusted_mode)
-
-This function applies the specified mode (possibly adjusted by the CRTC
-and/or Outputs).
-
- void
- crtc->funcs->commit (xf86CrtcPtr crtc)
-
-Once the mode has been applied to the CRTC and Outputs, this function is
-invoked to let the hardware turn things back on.
-
- void
- crtc->funcs->gamma_set (xf86CrtcPtr crtc, CARD16 *red,
- CARD16 *green, CARD16 *blue, int size)
-
-This function adjusts the gamma ramps for the specified crtc.
-
- void *
- crtc->funcs->shadow_allocate (xf86CrtcPtr crtc, int width, int height)
-
-This function allocates frame buffer space for a shadow frame buffer. When
-allocated, the crtc must scan from the shadow instead of the main frame
-buffer. This is used for rotation. The address returned is passed to the
-shadow_create function. This function should return NULL on failure.
-
- PixmapPtr
- crtc->funcs->shadow_create (xf86CrtcPtr crtc, void *data,
- int width, int height)
-
-This function creates a pixmap object that will be used as a shadow of the
-main frame buffer for CRTCs which are rotated or reflected. 'data' is the
-value returned by shadow_allocate.
-
- void
- crtc->funcs->shadow_destroy (xf86CrtcPtr crtc, PixmapPtr pPixmap,
- void *data)
-
-Destroys any associated shadow objects. If pPixmap is NULL, then a pixmap
-was not created, but 'data' may still be non-NULL indicating that the shadow
-had been allocated.
-
- void
- crtc->funcs->destroy (xf86CrtcPtr crtc)
-
-When a CRTC is destroyed (which only happens in error cases), this function
-can clean up any driver-specific data.
-
-4.2 CRTC fields
-
-The CRTC object is not opaque; there are several fields of interest to the
-driver writer.
-
- struct _xf86Crtc {
- /**
- * Associated ScrnInfo
- */
- ScrnInfoPtr scrn;
-
- /**
- * Active state of this CRTC
- *
- * Set when this CRTC is driving one or more outputs
- */
- Bool enabled;
-
- /** Track whether cursor is within CRTC range */
- Bool cursorInRange;
-
- /** Track state of cursor associated with this CRTC */
- Bool cursorShown;
-
- /**
- * Active mode
- *
- * This reflects the mode as set in the CRTC currently
- * It will be cleared when the VT is not active or
- * during server startup
- */
- DisplayModeRec mode;
- Rotation rotation;
- PixmapPtr rotatedPixmap;
- void *rotatedData;
-
- /**
- * Position on screen
- *
- * Locates this CRTC within the frame buffer
- */
- int x, y;
-
- /**
- * Desired mode
- *
- * This is set to the requested mode, independent of
- * whether the VT is active. In particular, it receives
- * the startup configured mode and saves the active mode
- * on VT switch.
- */
- DisplayModeRec desiredMode;
- Rotation desiredRotation;
- int desiredX, desiredY;
-
- /** crtc-specific functions */
- const xf86CrtcFuncsRec *funcs;
-
- /**
- * Driver private
- *
- * Holds driver-private information
- */
- void *driver_private;
- #ifdef RANDR_12_INTERFACE
- /**
- * RandR crtc
- *
- * When RandR 1.2 is available, this
- * points at the associated crtc object
- */
- RRCrtcPtr randr_crtc;
- #else
- void *randr_crtc;
- #endif
- };
-
-
-5. Output functions.
-
-6. Configuration
-
-Because the configuration file syntax is fixed,
-this was done by creating new "Driver" section options that hook specific
-outputs to specific "Monitor" sections in the file. The option:
-section of the form:
-
- Option "monitor-VGA" "My VGA Monitor"
-
-connects the VGA output of this driver to the "Monitor" section with
-Identifier "My VGA Monitor". All of the usual monitor options can now be
-placed in that "Monitor" section and will be applied to the VGA output
-configuration.
+ Multi-monitor Mode Setting APIs
+ Keith Packard, <keithp@keithp.com
+ 6 March 2007
+
+1. Introduction
+
+This document describes a set of mode setting APIs added in X server version
+1.3 that support multiple monitors per card. These interfaces expose the
+underlying hardware CRTC and output concepts to the xf86 DDX layer so that
+the implementation of initial server setup and mode changes through
+extensions can be shared across drivers. In addition, these new interfaces
+support a new configuration mechanism as well which allows each monitor to
+be customized separately providing a consistent cross-driver configuration
+mechanism that supports the full range of output features.
+
+All of the code implementing this interface can be found in hw/xfree86/modes
+in the X server sources.
+
+2. Overview
+
+This document describes both the driver API and the configuration data
+placed in xorg.conf; these are entirely separate as the driver has no
+interaction with the configuration information at all. Much of the structure
+here is cloned from the RandR extension version 1.2 additions which deal
+with the same kinds of information.
+
+2.1 API overview
+
+The mode setting API is expressed through two new driver-visible objects,
+the 'CRTC' (xf86CrtcRec) and the 'Output' (xf86OutputRec). A CRTC refers to
+hardware within the video system that can scan a subset of the framebuffer
+and generate a video signal. An Output receives that signal and transmits it
+to a monitor, projector or other device.
+
+The xf86CrtcRec and xf86OutputRec contain a small amount of state data
+related to the object along with a pointer to a set of functions provided by
+the driver that manipulate the object in fairly simple ways.
+
+To emulate older behaviour, one of the outputs is picked as the 'compat'
+output; this output changes over time as outputs are detected and used, the
+goal is to always have one 'special' output which is used for operations
+which need a single defined monitor (like XFree86-VidModeExtension mode
+setting, RandR 1.1 mode setting, DDC property setting, etc.).
+
+2.1.1 Output overview
+
+As outputs are connected to monitors, they hold a list of modes supported by
+the monitor. If the monitor and output support DDC, then the list of modes
+generally comes from the EDID data in the monitor. Otherwise, the server
+uses the standard VESA modes, pruned by monitor timing. If the configuration
+file doesn't contain monitor timing data, the server uses default timing
+information which supports 640x480, 800x600 and 1024x768 all with a 60Hz
+refresh rate.
+
+As hardware often limits possible configuration combinations, each output
+knows the set of CRTCs that it can be connected to as well as the set of
+other outputs which can be simutaneously connected to a CRTC.
+
+2.1.2 CRTC overview
+
+CRTCs serve only to stream frame buffer data to outputs using a mode line.
+Ideally, they would not be presented to the user at all, and in fact the
+configuration file doesn't expose them. The RandR 1.2 protocol does, but the
+hope there is that client-side applications will hide them carefully away.
+
+Each crtc has an associated cursor, along with the current configuration.
+All of the data needed to determine valid configurations is contained within
+the Outputs.
+
+2.2 Configuration overview
+
+As outputs drive monitors, the "Monitor" section has been repurposed to
+define their configuration. This provides for a bit more syntax than
+the large list of driver-specific options that were used in the past for
+similar configuration.
+
+However, the existing "Monitor" section referenced by the active "Screen"
+section no longer has any use at all; some sensible meaning for this
+parameter is needed now that a Screen can have multiple Monitors.
+
+3. Public Functions
+
+3.1 PreInit functions
+
+These functions should be used during the driver PreInit phase, they are
+arranged in the order they should be invoked.
+
+ void
+ xf86CrtcConfigInit (ScrnInfoPtr scrn
+ const xf86CrtcConfigFuncsRec *funcs)
+
+This function allocates and initializes structures needed to track CRTC and
+Output state.
+
+ void
+ xf86CrtcSetSizeRange (ScrnInfoPtr scrn,
+ int minWidth, int minHeight,
+ int maxWidth, int maxHeight)
+
+This sets the range of screen sizes supported by the driver.
+
+ xf86CrtcPtr
+ xf86CrtcCreate (ScrnInfoPtr scrn,
+ const xf86CrtcFuncsRec *funcs)
+
+Create one CRTC object. See the discussion below for a description of the
+contents of the xf86CrtcFuncsRec. Note that this is done in PreInit, so it
+should not be re-invoked at each server generation. Create one of these for
+each CRTC present in the hardware.
+
+ xf86OutputPtr
+ xf86OutputCreate (ScrnInfoPtr scrn,
+ const xf86OutputFuncsRec *funcs,
+ const char *name)
+
+Create one Output object. See the discussion below for a description of the
+contents of the xf86OutputFuncsRec. This is also called from PreInit and
+need not be re-invoked at each ScreenInit time. An Output should be created
+for every Output present in the hardware, not just for outputs which have
+detected monitors.
+
+ Bool
+ xf86OutputRename (xf86OutputPtr output, const char *name)
+
+If necessary, the name of an output can be changed after it is created using
+this function.
+
+ Bool
+ xf86InitialConfiguration (ScrnInfoPtr scrn, Bool canGrow)
+
+Using the resources provided, and the configuration specified by the user,
+this function computes an initial configuration for the server. It tries to
+enable as much hardware as possible using some fairly simple heuristics.
+
+The 'canGrow' parameter indicates that the frame buffer does not have a fixed
+size. When the frame buffer has a fixed size, the configuration selects a
+'reasonablely large' frame buffer so that common reconfiguration options are
+possible. For resizable frame buffers, the frame buffer is set to the smallest
+size that encloses the desired configuration.
+
+3.2 ScreenInit functions
+
+These functions should be used during the driver ScreenInit phase.
+
+ Bool
+ xf86DiDGAInit (ScreenPtr screen, unsigned long dga_address)
+
+This function provides driver-independent accelerated DGA support for some
+of the DGA operations; using this, the driver can avoid needing to implement
+any of the rest of DGA.
+
+ Bool
+ xf86SaveScreen(ScreenPtr pScreen, int mode)
+
+Stick this in pScreen->SaveScreen and the core X screen saver will be
+implemented by disabling outputs and crtcs using their dpms functions.
+
+ void
+ xf86DPMSSet(ScrnInfoPtr scrn, int mode, int flags)
+
+Pass this function to xf86DPMSInit and all DPMS mode switching will be
+managed by using the dpms functions provided by the Outputs and CRTCs.
+
+ Bool
+ xf86CrtcScreenInit (ScreenPtr screen)
+
+This function completes the screen initialization process for the crtc and
+output objects. Call it near the end of the ScreenInit function, after the
+frame buffer and acceleration layers have been added.
+
+3.3 EnterVT functions
+
+Functions used during EnterVT, or whenever the current configuration needs
+to be applied to the hardware.
+
+ Bool
+ xf86SetDesiredModes (ScrnInfoPtr scrn)
+
+xf86InitialConfiguration selects the desired configuration at PreInit time;
+when the server finally hits ScreenInit, xf86SetDesiredModes is used by the
+driver to take that configuration and apply it to the hardware. In addition,
+successful mode selection at other times updates the configuration that will
+be used by this function, so LeaveVT/EnterVT pairs can simply invoke this
+and return to the previous configuration.
+
+3.4 SwitchMode functions
+
+Functions called from the pScrn->SwitchMode hook, which is used by the
+XFree86-VidModeExtension and the keypad mode switch commands.
+
+ Bool
+ xf86SetSingleMode (ScrnInfoPtr scrn,
+ DisplayModePtr desired,
+ Rotation rotation)
+
+This function applies the specified mode to all active outputs. Which is to
+say, it picks reasonable modes for all active outputs, attempting to get the
+screen to the specified size while not breaking anything that is currently
+working.
+
+3.7 get_modes functions
+
+Functions called during output->get_modes to help build lists of modes
+
+ xf86MonPtr
+ xf86OutputGetEDID (xf86OutputPtr output, I2CBusPtr pDDCBus)
+
+This returns the EDID data structure for the 'output' using the I2C bus
+'pDDCBus'. This has no effect on 'output' itself.
+
+ void
+ xf86OutputSetEDID (xf86OutputPtr output, xf86MonPtr edid_mon)
+
+Once the EDID data has been fetched, this call applies the EDID data to the
+output object, setting the physical size and also various properties, like
+the DDC root window property (when output is the 'compat' output), and the
+RandR 1.2 EDID output properties.
+
+ DisplayModePtr
+ xf86OutputGetEDIDModes (xf86OutputPtr output)
+
+Given an EDID data structure, this function computes a list of suitable
+modes. This function also applies a sequence of 'quirks' during this process
+so that the returned modes may not actually match the mode data present in
+the EDID data.
+
+3.6 Other functions
+
+These remaining functions in the API can be used by the driver as needed.
+
+ Bool
+ xf86CrtcSetMode (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotation,
+ int x, int y)
+
+Applies a mode to a CRTC. All of the outputs which are currently using the
+specified CRTC are included in the mode setting process. 'x' and 'y' are the
+offset within the frame buffer that the crtc is placed at. No checking is
+done in this function to ensure that the mode is usable by the active
+outputs.
+
+ void
+ xf86ProbeOutputModes (ScrnInfoPtr pScrn, int maxX, int maxY)
+
+This discards the mode lists for all outputs, re-detects monitor presence
+and then acquires new mode lists for all monitors which are not disconnected.
+Monitor configuration data is used to modify the mode lists returned by the
+outputs. 'maxX' and 'maxY' limit the maximum size modes that will be
+returned.
+
+ void
+ xf86SetScrnInfoModes (ScrnInfoPtr pScrn)
+
+This copies the 'compat' output mode list into the pScrn modes list which is
+used by the XFree86-VidModeExtension and the keypad mode switching
+operations. The current 'desired' mode for the CRTC associated with the
+'compat' output is placed first in this list to indicate the current mode.
+Usually, the driver won't need to call this function as
+xf86InitialConfiguration will do so automatically, as well as any RandR
+functions which reprobe for modes. However, if the driver reprobes for modes
+at other times using xf86ProbeOutputModes, this function needs to be called.
+
+ Bool
+ xf86DiDGAReInit (ScreenPtr pScreen)
+
+This is similar to xf86SetScrnInfoModes, but it applies the 'compat' output
+mode list to the set of modes advertised by the DGA extension; it needs to
+be called whenever xf86ProbeOutputModes is invoked.
+
+ void
+ xf86DisableUnusedFunctions(ScrnInfoPtr pScrn)
+
+After any sequence of calls using xf86CrtcSetMode, this function cleans up
+any leftover Output and CRTC objects by disabling them, saving power. It is
+safe to call this whenever the server is running as it only disables objects
+which are not currently in use.
+
+4. CRTC operations
+
+4.1 CRTC functions
+
+These functions provide an abstract interface for the CRTC object; most
+manipulation of the CRTC object is done through these functions.
+
+ void
+ crtc->funcs->dpms (xf86CrtcPtr crtc, int mode)
+
+Where 'mode' is one of DPMSModeOff, DPMSModeSuspend, DPMSModeStandby or
+DPMSModeOn. This requests that the crtc go to the specified power state.
+When changing power states, the output dpms functions are invoked before the
+crtc dpms functions.
+
+ void
+ crtc->funcs->save (xf86CrtcPtr crtc)
+
+ void
+ crtc->funcs->restore (xf86CrtcPtr crtc)
+
+Preserve/restore any register contents related to the CRTC. These are
+strictly a convenience for the driver writer; if the existing driver has
+fully operation save/restore functions, you need not place any additional
+code here. In particular, the server itself never uses this function.
+
+ Bool
+ crtc->funcs->lock (xf86CrtcPtr crtc)
+
+ void
+ crtc->funcs->unlock (xf86CrtcPtr crtc)
+
+These functions are invoked around mode setting operations; the intent is
+that DRI locking be done here to prevent DRI applications from manipulating
+the hardware while the server is busy changing the output configuration. If
+the lock function returns FALSE, the unlock function will not be invoked.
+
+ Bool
+ crtc->funcs->mode_fixup (xf86CrtcPtr crtc,
+ DisplayModePtr mode,
+ DisplayModePtr adjusted_mode)
+
+This call gives the CRTC a chance to see what mode will be set and to
+comment on the mode by changing 'adjusted_mode' as needed. This function
+shall not modify the state of the crtc hardware at all. If the CRTC cannot
+accept this mode, this function may return FALSE.
+
+ void
+ crtc->funcs->prepare (xf86CrtcPtr crtc)
+
+This call is made just before the mode is set to make the hardware ready for
+the operation. A usual function to perform here is to disable the crtc so
+that mode setting can occur with clocks turned off and outputs deactivated.
+
+ void
+ crtc->funcs->mode_set (xf86CrtcPtr crtc,
+ DisplayModePtr mode,
+ DisplayModePtr adjusted_mode)
+
+This function applies the specified mode (possibly adjusted by the CRTC
+and/or Outputs).
+
+ void
+ crtc->funcs->commit (xf86CrtcPtr crtc)
+
+Once the mode has been applied to the CRTC and Outputs, this function is
+invoked to let the hardware turn things back on.
+
+ void
+ crtc->funcs->gamma_set (xf86CrtcPtr crtc, CARD16 *red,
+ CARD16 *green, CARD16 *blue, int size)
+
+This function adjusts the gamma ramps for the specified crtc.
+
+ void *
+ crtc->funcs->shadow_allocate (xf86CrtcPtr crtc, int width, int height)
+
+This function allocates frame buffer space for a shadow frame buffer. When
+allocated, the crtc must scan from the shadow instead of the main frame
+buffer. This is used for rotation. The address returned is passed to the
+shadow_create function. This function should return NULL on failure.
+
+ PixmapPtr
+ crtc->funcs->shadow_create (xf86CrtcPtr crtc, void *data,
+ int width, int height)
+
+This function creates a pixmap object that will be used as a shadow of the
+main frame buffer for CRTCs which are rotated or reflected. 'data' is the
+value returned by shadow_allocate.
+
+ void
+ crtc->funcs->shadow_destroy (xf86CrtcPtr crtc, PixmapPtr pPixmap,
+ void *data)
+
+Destroys any associated shadow objects. If pPixmap is NULL, then a pixmap
+was not created, but 'data' may still be non-NULL indicating that the shadow
+had been allocated.
+
+ void
+ crtc->funcs->destroy (xf86CrtcPtr crtc)
+
+When a CRTC is destroyed (which only happens in error cases), this function
+can clean up any driver-specific data.
+
+4.2 CRTC fields
+
+The CRTC object is not opaque; there are several fields of interest to the
+driver writer.
+
+ struct _xf86Crtc {
+ /**
+ * Associated ScrnInfo
+ */
+ ScrnInfoPtr scrn;
+
+ /**
+ * Active state of this CRTC
+ *
+ * Set when this CRTC is driving one or more outputs
+ */
+ Bool enabled;
+
+ /** Track whether cursor is within CRTC range */
+ Bool cursorInRange;
+
+ /** Track state of cursor associated with this CRTC */
+ Bool cursorShown;
+
+ /**
+ * Active mode
+ *
+ * This reflects the mode as set in the CRTC currently
+ * It will be cleared when the VT is not active or
+ * during server startup
+ */
+ DisplayModeRec mode;
+ Rotation rotation;
+ PixmapPtr rotatedPixmap;
+ void *rotatedData;
+
+ /**
+ * Position on screen
+ *
+ * Locates this CRTC within the frame buffer
+ */
+ int x, y;
+
+ /**
+ * Desired mode
+ *
+ * This is set to the requested mode, independent of
+ * whether the VT is active. In particular, it receives
+ * the startup configured mode and saves the active mode
+ * on VT switch.
+ */
+ DisplayModeRec desiredMode;
+ Rotation desiredRotation;
+ int desiredX, desiredY;
+
+ /** crtc-specific functions */
+ const xf86CrtcFuncsRec *funcs;
+
+ /**
+ * Driver private
+ *
+ * Holds driver-private information
+ */
+ void *driver_private;
+ #ifdef RANDR_12_INTERFACE
+ /**
+ * RandR crtc
+ *
+ * When RandR 1.2 is available, this
+ * points at the associated crtc object
+ */
+ RRCrtcPtr randr_crtc;
+ #else
+ void *randr_crtc;
+ #endif
+ };
+
+
+5. Output functions.
+
+6. Configuration
+
+Because the configuration file syntax is fixed,
+this was done by creating new "Driver" section options that hook specific
+outputs to specific "Monitor" sections in the file. The option:
+section of the form:
+
+ Option "monitor-VGA" "My VGA Monitor"
+
+connects the VGA output of this driver to the "Monitor" section with
+Identifier "My VGA Monitor". All of the usual monitor options can now be
+placed in that "Monitor" section and will be applied to the VGA output
+configuration.
diff --git a/xorg-server/hw/xfree86/doc/ddxDesign.xml b/xorg-server/hw/xfree86/doc/ddxDesign.xml
index 24b0c0324..4c2ca47da 100644
--- a/xorg-server/hw/xfree86/doc/ddxDesign.xml
+++ b/xorg-server/hw/xfree86/doc/ddxDesign.xml
@@ -330,8 +330,8 @@ that. This is a significant difference compared with the old design.
<para>
The entry points for drawing operations are already taken care of by
-the framebuffer code (including, XAA). Extensions and enhancements to
-framebuffer code are outside the scope of this document.
+the framebuffer code. Extensions and enhancements to framebuffer code
+are outside the scope of this document.
</para>
<para>
@@ -2003,10 +2003,9 @@ also include the video card's saved state.
</para>
<para>
-Per-screen data for other modules that the driver uses (for example,
-the XAA module) that is reset for each server generation is hooked into
-the <structname>ScrnInfoRec</structname> through it's <structfield>privates</structfield>
-field.
+Per-screen data for other modules that the driver uses that is reset for each
+server generation is hooked into the <structname>ScrnInfoRec</structname>
+through its <structfield>privates</structfield> field.
</para>
<para>
@@ -3615,14 +3614,6 @@ The following include files are typically required by video drivers:
</para>
<para>
- If a driver uses XAA, it needs these:
- <literallayout><filename>
- "xaa.h"
- "xaalocal.h"
- </filename></literallayout>
- </para>
-
- <para>
If a driver uses the fb manager, it needs this:
<literallayout><filename>
"xf86fbman.h"
@@ -3840,31 +3831,6 @@ manager is allowed to manage. This is typically a box with a width of
can be fit within the total video memory, however, the driver can reserve
areas at the extremities by passing a smaller area to the manager.
</para>
-
- <para>
-<function>xf86InitFBManager()</function> must be called before XAA is
-initialized since XAA uses the manager for it's pixmap cache.
- </para>
-
- <para>
-An alternative function is provided to allow the driver to initialize
-the framebuffer manager with a Region rather than a box.
-
- <programlisting>
- Bool xf86InitFBManagerRegion(ScreenPtr pScreen,
- RegionPtr FullRegion);
- </programlisting>
-
-<function>xf86InitFBManagerRegion()</function>, unlike
-<function>xf86InitFBManager()</function>, does not remove the area used for
-the visible screen so that area should not be included in the region
-passed to the function. <function>xf86InitFBManagerRegion()</function> is
-useful when non-contiguous areas are available to be managed, and is
-required when multiple framebuffers are stored in video memory (as in
-the case where an overlay of a different depth is stored as a second
-framebuffer in offscreen memory).
- </para>
-
</sect1>
<sect1 id="cmap">
@@ -5363,15 +5329,6 @@ XFree86 common layer.
way by modules loaded directly by the XFree86 common
layer. However, it may be used for application-specific
parameter passing in other situations.
- </para>
-
- <para>
- When loading <quote>external</quote> modules (modules that don't
- have the standard entry point, for example a
- special shared library) the options parameter can be
- set to <constant>EXTERN_MODULE</constant> to tell the
- loader not to reject the module when it doesn't find
- the standard entry point.
</para></listitem></varlistentry>
@@ -5982,7 +5939,6 @@ typedef struct {
InitExtension initFunc;
char * name;
Bool *disablePtr;
- InitExtension setupFunc;
} ExtensionModule;
</programlisting>
</para>
@@ -8910,12 +8866,6 @@ ZZZPreInit(ScrnInfoPtr pScrn, int flags)
ZZZFreeRec(pScrn);
return FALSE;
- /* Load XAA if needed */
- if (!pZzz-&gt;noAccel || pZzz-&gt;hwCursor)
- if (!xf86LoadSubModule(pScrn, "xaa")) {
- ZZZFreeRec(pScrn);
- return FALSE;
- }
/* Done */
return TRUE;
diff --git a/xorg-server/hw/xfree86/doc/exa-driver.txt b/xorg-server/hw/xfree86/doc/exa-driver.txt
index 048307ee7..da39d3f91 100644
--- a/xorg-server/hw/xfree86/doc/exa-driver.txt
+++ b/xorg-server/hw/xfree86/doc/exa-driver.txt
@@ -8,15 +8,10 @@ from system memory, and Porter-Duff compositing and transform operations.
Configuration
-------------
-A new config file option, AccelMethod, should be added to your driver, to allow
-the user to select between the EXA and XAA acceleration APIs.
-
Some drivers implement a per-instance useEXA flag to track whether EXA is
-active or not. It can be helpful to also conditionalize XAA support with an
-ifdef so that it can easily be turned off/removed in the future.
+active or not.
-Setting the flag and checking for AccelMethod can be done in the driver's
-Options parsing routine.
+Setting the flag can be done in the driver's Options parsing routine.
Loading EXA
------------
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 20:15:25 +0000