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drm/linux-core/drm_crtc.c

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/*
* Copyright (c) 2006-2007 Intel Corporation
* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
*
* DRM core CRTC related functions
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*
* Authors:
* Keith Packard
* Eric Anholt <eric@anholt.net>
* Dave Airlie <airlied@linux.ie>
* Jesse Barnes <jesse.barnes@intel.com>
*/
#include <linux/list.h>
#include "drm.h"
#include "drmP.h"
#include "drm_crtc.h"
struct drm_prop_enum_list {
int type;
char *name;
};
static struct drm_prop_enum_list drm_dpms_enum_list[] =
{ { DPMSModeOn, "On" },
{ DPMSModeStandby, "Standby" },
{ DPMSModeSuspend, "Suspend" },
{ DPMSModeOff, "Off" }
};
static struct drm_prop_enum_list drm_conn_enum_list[] =
{ { ConnectorVGA, "VGA" },
{ ConnectorDVII, "DVI-I" },
{ ConnectorDVID, "DVI-D" },
{ ConnectorDVIA, "DVI-A" },
{ ConnectorComposite, "Composite" },
{ ConnectorSVIDEO, "SVIDEO" },
{ ConnectorLVDS, "LVDS" },
{ ConnectorComponent, "Component" },
{ Connector9PinDIN, "9-pin DIN" },
{ ConnectorDisplayPort, "DisplayPort" },
{ ConnectorHDMIA, "HDMI Type A" },
{ ConnectorHDMIB, "HDMI Type B" },
};
static struct drm_prop_enum_list drm_output_enum_list[] =
{ { DRM_MODE_OUTPUT_NONE, "None" },
{ DRM_MODE_OUTPUT_DAC, "DAC" },
{ DRM_MODE_OUTPUT_TMDS, "TMDS" },
{ DRM_MODE_OUTPUT_LVDS, "LVDS" },
{ DRM_MODE_OUTPUT_TVDAC, "TV" },
};
char *drm_get_output_name(struct drm_output *output)
{
static char buf[32];
snprintf(buf, 32, "%s-%d", drm_output_enum_list[output->output_type].name,
output->output_type_id);
return buf;
}
/**
* drm_idr_get - allocate a new identifier
* @dev: DRM device
* @ptr: object pointer, used to generate unique ID
*
* LOCKING:
* Caller must hold DRM mode_config lock.
*
* Create a unique identifier based on @ptr in @dev's identifier space. Used
* for tracking modes, CRTCs and outputs.
*
* RETURNS:
* New unique (relative to other objects in @dev) integer identifier for the
* object.
*/
int drm_idr_get(struct drm_device *dev, void *ptr)
{
int new_id = 0;
int ret;
again:
if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
DRM_ERROR("Ran out memory getting a mode number\n");
return 0;
}
ret = idr_get_new_above(&dev->mode_config.crtc_idr, ptr, 1, &new_id);
if (ret == -EAGAIN)
goto again;
return new_id;
}
/**
* drm_idr_put - free an identifer
* @dev: DRM device
* @id: ID to free
*
* LOCKING:
* Caller must hold DRM mode_config lock.
*
* Free @id from @dev's unique identifier pool.
*/
void drm_idr_put(struct drm_device *dev, int id)
{
idr_remove(&dev->mode_config.crtc_idr, id);
}
/**
* drm_crtc_from_fb - find the CRTC structure associated with an fb
* @dev: DRM device
* @fb: framebuffer in question
*
* LOCKING:
* Caller must hold mode_config lock.
*
* Find CRTC in the mode_config structure that matches @fb.
*
* RETURNS:
* Pointer to the CRTC or NULL if it wasn't found.
*/
struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev,
struct drm_framebuffer *fb)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (crtc->fb == fb)
return crtc;
}
return NULL;
}
/**
* drm_framebuffer_create - create a new framebuffer object
* @dev: DRM device
*
* LOCKING:
* Caller must hold mode config lock.
*
* Creates a new framebuffer objects and adds it to @dev's DRM mode_config.
*
* RETURNS:
* Pointer to new framebuffer or NULL on error.
*/
struct drm_framebuffer *drm_framebuffer_create(struct drm_device *dev)
{
struct drm_framebuffer *fb;
fb = kzalloc(sizeof(struct drm_framebuffer), GFP_KERNEL);
if (!fb)
return NULL;
fb->id = drm_idr_get(dev, fb);
fb->dev = dev;
dev->mode_config.num_fb++;
list_add(&fb->head, &dev->mode_config.fb_list);
return fb;
}
EXPORT_SYMBOL(drm_framebuffer_create);
/**
* drm_framebuffer_destroy - remove a framebuffer object
* @fb: framebuffer to remove
*
* LOCKING:
* Caller must hold mode config lock.
*
* Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
* it, setting it to NULL.
*/
void drm_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct drm_device *dev = fb->dev;
struct drm_crtc *crtc;
/* remove from any CRTC */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (crtc->fb == fb)
crtc->fb = NULL;
}
drm_idr_put(dev, fb->id);
list_del(&fb->head);
dev->mode_config.num_fb--;
kfree(fb);
}
EXPORT_SYMBOL(drm_framebuffer_destroy);
/**
* drm_crtc_create - create a new CRTC object
* @dev: DRM device
* @funcs: callbacks for the new CRTC
*
* LOCKING:
* Caller must hold mode config lock.
*
* Creates a new CRTC object and adds it to @dev's mode_config structure.
*
* RETURNS:
* Pointer to new CRTC object or NULL on error.
*/
struct drm_crtc *drm_crtc_create(struct drm_device *dev,
const struct drm_crtc_funcs *funcs)
{
struct drm_crtc *crtc;
crtc = kzalloc(sizeof(struct drm_crtc), GFP_KERNEL);
if (!crtc)
return NULL;
crtc->dev = dev;
crtc->funcs = funcs;
crtc->id = drm_idr_get(dev, crtc);
list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
dev->mode_config.num_crtc++;
return crtc;
}
EXPORT_SYMBOL(drm_crtc_create);
/**
* drm_crtc_destroy - remove a CRTC object
* @crtc: CRTC to remove
*
* LOCKING:
* Caller must hold mode config lock.
*
* Cleanup @crtc. Calls @crtc's cleanup function, then removes @crtc from
* its associated DRM device's mode_config. Frees it afterwards.
*/
void drm_crtc_destroy(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
if (crtc->funcs->cleanup)
(*crtc->funcs->cleanup)(crtc);
drm_idr_put(dev, crtc->id);
list_del(&crtc->head);
dev->mode_config.num_crtc--;
kfree(crtc);
}
EXPORT_SYMBOL(drm_crtc_destroy);
/**
* drm_crtc_in_use - check if a given CRTC is in a mode_config
* @crtc: CRTC to check
*
* LOCKING:
* Caller must hold mode config lock.
*
* Walk @crtc's DRM device's mode_config and see if it's in use.
*
* RETURNS:
* True if @crtc is part of the mode_config, false otherwise.
*/
bool drm_crtc_in_use(struct drm_crtc *crtc)
{
struct drm_output *output;
struct drm_device *dev = crtc->dev;
/* FIXME: Locking around list access? */
list_for_each_entry(output, &dev->mode_config.output_list, head)
if (output->crtc == crtc)
return true;
return false;
}
EXPORT_SYMBOL(drm_crtc_in_use);
/*
* Detailed mode info for a standard 640x480@60Hz monitor
*/
static struct drm_display_mode std_mode[] = {
{ DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 25200, 640, 656,
752, 800, 0, 480, 490, 492, 525, 0,
V_NHSYNC | V_NVSYNC) }, /* 640x480@60Hz */
};
/**
* drm_crtc_probe_output_modes - get complete set of display modes
* @dev: DRM device
* @maxX: max width for modes
* @maxY: max height for modes
*
* LOCKING:
* Caller must hold mode config lock.
*
* Based on @dev's mode_config layout, scan all the outputs and try to detect
* modes on them. Modes will first be added to the output's probed_modes
* list, then culled (based on validity and the @maxX, @maxY parameters) and
* put into the normal modes list.
*
* Intended to be used either at bootup time or when major configuration
* changes have occurred.
*
* FIXME: take into account monitor limits
*/
void drm_crtc_probe_single_output_modes(struct drm_output *output, int maxX, int maxY)
{
struct drm_device *dev = output->dev;
struct drm_display_mode *mode, *t;
int ret;
//if (maxX == 0 || maxY == 0)
// TODO
/* set all modes to the unverified state */
list_for_each_entry_safe(mode, t, &output->modes, head)
mode->status = MODE_UNVERIFIED;
output->status = (*output->funcs->detect)(output);
if (output->status == output_status_disconnected) {
DRM_DEBUG("%s is disconnected\n", drm_get_output_name(output));
/* TODO set EDID to NULL */
return;
}
ret = (*output->funcs->get_modes)(output);
if (ret) {
drm_mode_output_list_update(output);
}
if (maxX && maxY)
drm_mode_validate_size(dev, &output->modes, maxX,
maxY, 0);
list_for_each_entry_safe(mode, t, &output->modes, head) {
if (mode->status == MODE_OK)
mode->status = (*output->funcs->mode_valid)(output,mode);
}
drm_mode_prune_invalid(dev, &output->modes, TRUE);
if (list_empty(&output->modes)) {
struct drm_display_mode *stdmode;
DRM_DEBUG("No valid modes on %s\n", drm_get_output_name(output));
/* Should we do this here ???
* When no valid EDID modes are available we end up
* here and bailed in the past, now we add a standard
* 640x480@60Hz mode and carry on.
*/
stdmode = drm_mode_duplicate(dev, &std_mode[0]);
drm_mode_probed_add(output, stdmode);
drm_mode_list_concat(&output->probed_modes,
&output->modes);
DRM_DEBUG("Adding standard 640x480 @ 60Hz to %s\n",
drm_get_output_name(output));
}
drm_mode_sort(&output->modes);
DRM_DEBUG("Probed modes for %s\n", drm_get_output_name(output));
list_for_each_entry_safe(mode, t, &output->modes, head) {
mode->vrefresh = drm_mode_vrefresh(mode);
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
drm_mode_debug_printmodeline(dev, mode);
}
}
void drm_crtc_probe_output_modes(struct drm_device *dev, int maxX, int maxY)
{
struct drm_output *output;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
drm_crtc_probe_single_output_modes(output, maxX, maxY);
}
}
EXPORT_SYMBOL(drm_crtc_probe_output_modes);
/**
* drm_crtc_set_mode - set a mode
* @crtc: CRTC to program
* @mode: mode to use
* @x: width of mode
* @y: height of mode
*
* LOCKING:
* Caller must hold mode config lock.
*
* Try to set @mode on @crtc. Give @crtc and its associated outputs a chance
* to fixup or reject the mode prior to trying to set it.
*
* RETURNS:
* True if the mode was set successfully, or false otherwise.
*/
bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
int x, int y)
{
struct drm_device *dev = crtc->dev;
struct drm_display_mode *adjusted_mode, saved_mode;
int saved_x, saved_y;
bool didLock = false;
bool ret = false;
struct drm_output *output;
adjusted_mode = drm_mode_duplicate(dev, mode);
crtc->enabled = drm_crtc_in_use(crtc);
if (!crtc->enabled) {
return true;
}
didLock = crtc->funcs->lock(crtc);
saved_mode = crtc->mode;
saved_x = crtc->x;
saved_y = crtc->y;
/* Update crtc values up front so the driver can rely on them for mode
* setting.
*/
crtc->mode = *mode;
crtc->x = x;
crtc->y = y;
/* XXX short-circuit changes to base location only */
/* Pass our mode to the outputs and the CRTC to give them a chance to
* adjust it according to limitations or output properties, and also
* a chance to reject the mode entirely.
*/
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (output->crtc != crtc)
continue;
if (!output->funcs->mode_fixup(output, mode, adjusted_mode)) {
goto done;
}
}
if (!crtc->funcs->mode_fixup(crtc, mode, adjusted_mode)) {
goto done;
}
/* Prepare the outputs and CRTCs before setting the mode. */
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (output->crtc != crtc)
continue;
/* Disable the output as the first thing we do. */
output->funcs->prepare(output);
}
crtc->funcs->prepare(crtc);
/* Set up the DPLL and any output state that needs to adjust or depend
* on the DPLL.
*/
crtc->funcs->mode_set(crtc, mode, adjusted_mode, x, y);
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (output->crtc != crtc)
continue;
DRM_INFO("%s: set mode %s %x\n", drm_get_output_name(output), mode->name, mode->mode_id);
output->funcs->mode_set(output, mode, adjusted_mode);
}
/* Now, enable the clocks, plane, pipe, and outputs that we set up. */
crtc->funcs->commit(crtc);
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (output->crtc != crtc)
continue;
output->funcs->commit(output);
#if 0 // TODO def RANDR_12_INTERFACE
if (output->randr_output)
RRPostPendingProperties (output->randr_output);
#endif
}
/* XXX free adjustedmode */
drm_mode_destroy(dev, adjusted_mode);
ret = TRUE;
/* TODO */
// if (scrn->pScreen)
// drm_crtc_set_screen_sub_pixel_order(dev);
done:
if (!ret) {
crtc->x = saved_x;
crtc->y = saved_y;
crtc->mode = saved_mode;
}
if (didLock)
crtc->funcs->unlock (crtc);
return ret;
}
EXPORT_SYMBOL(drm_crtc_set_mode);
/**
* drm_disable_unused_functions - disable unused objects
* @dev: DRM device
*
* LOCKING:
* Caller must hold mode config lock.
*
* If an output or CRTC isn't part of @dev's mode_config, it can be disabled
* by calling its dpms function, which should power it off.
*/
void drm_disable_unused_functions(struct drm_device *dev)
{
struct drm_output *output;
struct drm_crtc *crtc;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (!output->crtc)
(*output->funcs->dpms)(output, DPMSModeOff);
}
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (!crtc->enabled)
crtc->funcs->dpms(crtc, DPMSModeOff);
}
}
EXPORT_SYMBOL(drm_disable_unused_functions);
/**
* drm_mode_probed_add - add a mode to the specified output's probed mode list
* @output: output the new mode
* @mode: mode data
*
* LOCKING:
* Caller must hold mode config lock.
*
* Add @mode to @output's mode list for later use.
*/
void drm_mode_probed_add(struct drm_output *output,
struct drm_display_mode *mode)
{
list_add(&mode->head, &output->probed_modes);
}
EXPORT_SYMBOL(drm_mode_probed_add);
/**
* drm_mode_remove - remove and free a mode
* @output: output list to modify
* @mode: mode to remove
*
* LOCKING:
* Caller must hold mode config lock.
*
* Remove @mode from @output's mode list, then free it.
*/
void drm_mode_remove(struct drm_output *output, struct drm_display_mode *mode)
{
list_del(&mode->head);
kfree(mode);
}
EXPORT_SYMBOL(drm_mode_remove);
/**
* drm_output_create - create a new output
* @dev: DRM device
* @funcs: callbacks for this output
* @name: user visible name of the output
*
* LOCKING:
* Caller must hold @dev's mode_config lock.
*
* Creates a new drm_output structure and adds it to @dev's mode_config
* structure.
*
* RETURNS:
* Pointer to the new output or NULL on error.
*/
struct drm_output *drm_output_create(struct drm_device *dev,
const struct drm_output_funcs *funcs,
int output_type)
{
struct drm_output *output = NULL;
output = kzalloc(sizeof(struct drm_output), GFP_KERNEL);
if (!output)
return NULL;
output->dev = dev;
output->funcs = funcs;
output->id = drm_idr_get(dev, output);
output->output_type = output_type;
output->output_type_id = 1; /* TODO */
output->subpixel_order = SubPixelUnknown;
INIT_LIST_HEAD(&output->user_modes);
INIT_LIST_HEAD(&output->probed_modes);
INIT_LIST_HEAD(&output->modes);
/* randr_output? */
/* output_set_monitor(output)? */
/* check for output_ignored(output)? */
mutex_lock(&dev->mode_config.mutex);
list_add_tail(&output->head, &dev->mode_config.output_list);
dev->mode_config.num_output++;
drm_output_attach_property(output, dev->mode_config.edid_property, 0);
drm_output_attach_property(output, dev->mode_config.dpms_property, 0);
mutex_unlock(&dev->mode_config.mutex);
return output;
}
EXPORT_SYMBOL(drm_output_create);
/**
* drm_output_destroy - remove an output
* @output: output to remove
*
* LOCKING:
* Caller must hold @dev's mode_config lock.
*
* Call @output's cleanup function, then remove the output from the DRM
* mode_config after freeing @output's modes.
*/
void drm_output_destroy(struct drm_output *output)
{
struct drm_device *dev = output->dev;
struct drm_display_mode *mode, *t;
if (*output->funcs->cleanup)
(*output->funcs->cleanup)(output);
list_for_each_entry_safe(mode, t, &output->probed_modes, head)
drm_mode_remove(output, mode);
list_for_each_entry_safe(mode, t, &output->modes, head)
drm_mode_remove(output, mode);
list_for_each_entry_safe(mode, t, &output->user_modes, head)
drm_mode_remove(output, mode);
mutex_lock(&dev->mode_config.mutex);
drm_idr_put(dev, output->id);
list_del(&output->head);
mutex_unlock(&dev->mode_config.mutex);
kfree(output);
}
EXPORT_SYMBOL(drm_output_destroy);
/**
* drm_mode_create - create a new display mode
* @dev: DRM device
*
* LOCKING:
* None.
*
* Create a new drm_display_mode, give it an ID, and return it.
*
* RETURNS:
* Pointer to new mode on success, NULL on error.
*/
struct drm_display_mode *drm_mode_create(struct drm_device *dev)
{
struct drm_display_mode *nmode;
nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
if (!nmode)
return NULL;
nmode->mode_id = drm_idr_get(dev, nmode);
return nmode;
}
EXPORT_SYMBOL(drm_mode_create);
/**
* drm_mode_destroy - remove a mode
* @dev: DRM device
* @mode: mode to remove
*
* LOCKING:
* Caller must hold mode config lock.
*
* Free @mode's unique identifier, then free it.
*/
void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
{
drm_idr_put(dev, mode->mode_id);
kfree(mode);
}
EXPORT_SYMBOL(drm_mode_destroy);
static int drm_mode_create_standard_output_properties(struct drm_device *dev)
{
int i;
dev->mode_config.edid_property =
drm_property_create(dev, DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE,
"EDID", 0);
dev->mode_config.dpms_property =
drm_property_create(dev, DRM_MODE_PROP_ENUM, "DPMS", 4);
for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
drm_property_add_enum(dev->mode_config.dpms_property, i, drm_dpms_enum_list[i].type, drm_dpms_enum_list[i].name);
dev->mode_config.connector_type_property =
drm_property_create(dev, DRM_MODE_PROP_ENUM | DRM_MODE_PROP_IMMUTABLE,
"Connector Type", 10);
for (i = 0; i < ARRAY_SIZE(drm_conn_enum_list); i++)
drm_property_add_enum(dev->mode_config.connector_type_property, i, drm_conn_enum_list[i].type, drm_conn_enum_list[i].name);
dev->mode_config.connector_num_property =
drm_property_create(dev, DRM_MODE_PROP_RANGE | DRM_MODE_PROP_IMMUTABLE,
"Connector ID", 2);
dev->mode_config.connector_num_property->values[0] = 0;
dev->mode_config.connector_num_property->values[1] = 20;
return 0;
}
/**
* drm_mode_config_init - initialize DRM mode_configuration structure
* @dev: DRM device
*
* LOCKING:
* None, should happen single threaded at init time.
*
* Initialize @dev's mode_config structure, used for tracking the graphics
* configuration of @dev.
*/
void drm_mode_config_init(struct drm_device *dev)
{
mutex_init(&dev->mode_config.mutex);
INIT_LIST_HEAD(&dev->mode_config.fb_list);
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
INIT_LIST_HEAD(&dev->mode_config.output_list);
INIT_LIST_HEAD(&dev->mode_config.property_list);
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
idr_init(&dev->mode_config.crtc_idr);
drm_mode_create_standard_output_properties(dev);
/* Just to be sure */
dev->mode_config.num_fb = 0;
dev->mode_config.num_output = 0;
dev->mode_config.num_crtc = 0;
}
EXPORT_SYMBOL(drm_mode_config_init);
/**
* drm_get_buffer_object - find the buffer object for a given handle
* @dev: DRM device
* @bo: pointer to caller's buffer_object pointer
* @handle: handle to lookup
*
* LOCKING:
* Must take @dev's struct_mutex to protect buffer object lookup.
*
* Given @handle, lookup the buffer object in @dev and put it in the caller's
* @bo pointer.
*
* RETURNS:
* Zero on success, -EINVAL if the handle couldn't be found.
*/
static int drm_get_buffer_object(struct drm_device *dev, struct drm_buffer_object **bo, unsigned long handle)
{
struct drm_user_object *uo;
struct drm_hash_item *hash;
int ret;
*bo = NULL;
mutex_lock(&dev->struct_mutex);
ret = drm_ht_find_item(&dev->object_hash, handle, &hash);
if (ret) {
DRM_ERROR("Couldn't find handle.\n");
ret = -EINVAL;
goto out_err;
}
uo = drm_hash_entry(hash, struct drm_user_object, hash);
if (uo->type != drm_buffer_type) {
ret = -EINVAL;
goto out_err;
}
*bo = drm_user_object_entry(uo, struct drm_buffer_object, base);
ret = 0;
out_err:
mutex_unlock(&dev->struct_mutex);
return ret;
}
/**
* drm_pick_crtcs - pick crtcs for output devices
* @dev: DRM device
*
* LOCKING:
* Caller must hold mode config lock.
*/
static void drm_pick_crtcs (struct drm_device *dev)
{
int c, o, assigned;
struct drm_output *output, *output_equal;
struct drm_crtc *crtc;
struct drm_display_mode *des_mode = NULL, *modes, *modes_equal;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
output->crtc = NULL;
/* Don't hook up outputs that are disconnected ??
*
* This is debateable. Do we want fixed /dev/fbX or
* dynamic on hotplug (need mode code for that though) ?
*
* If we don't hook up outputs now, then we only create
* /dev/fbX for the output that's enabled, that's good as
* the users console will be on that output.
*
* If we do hook up outputs that are disconnected now, then
* the user may end up having to muck about with the fbcon
* map flags to assign his console to the enabled output. Ugh.
*/
if (output->status != output_status_connected)
continue;
des_mode = NULL;
list_for_each_entry(des_mode, &output->modes, head) {
if (des_mode->type & DRM_MODE_TYPE_PREFERRED)
break;
}
/* No preferred mode, let's just select the first available */
if (!des_mode || !(des_mode->type & DRM_MODE_TYPE_PREFERRED)) {
list_for_each_entry(des_mode, &output->modes, head) {
if (des_mode)
break;
}
}
c = -1;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
assigned = 0;
c++;
if ((output->possible_crtcs & (1 << c)) == 0)
continue;
list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
if (output->id == output_equal->id)
continue;
/* Find out if crtc has been assigned before */
if (output_equal->crtc == crtc)
assigned = 1;
}
#if 1 /* continue for now */
if (assigned)
continue;
#endif
o = -1;
list_for_each_entry(output_equal, &dev->mode_config.output_list, head) {
o++;
if (output->id == output_equal->id)
continue;
list_for_each_entry(modes, &output->modes, head) {
list_for_each_entry(modes_equal, &output_equal->modes, head) {
if (drm_mode_equal (modes, modes_equal)) {
if ((output->possible_clones & output_equal->possible_clones) && (output_equal->crtc == crtc)) {
printk("Cloning %s (0x%lx) to %s (0x%lx)\n",drm_get_output_name(output),output->possible_clones,drm_get_output_name(output_equal),output_equal->possible_clones);
assigned = 0;
goto clone;
}
}
}
}
}
clone:
/* crtc has been assigned skip it */
if (assigned)
continue;
/* Found a CRTC to attach to, do it ! */
output->crtc = crtc;
output->crtc->desired_mode = des_mode;
output->initial_x = 0;
output->initial_y = 0;
DRM_DEBUG("Desired mode for CRTC %d is 0x%x:%s\n",c,des_mode->mode_id, des_mode->name);
break;
}
}
}
EXPORT_SYMBOL(drm_pick_crtcs);
/**
* drm_initial_config - setup a sane initial output configuration
* @dev: DRM device
* @can_grow: this configuration is growable
*
* LOCKING:
* Called at init time, must take mode config lock.
*
* Scan the CRTCs and outputs and try to put together an initial setup.
* At the moment, this is a cloned configuration across all heads with
* a new framebuffer object as the backing store.
*
* RETURNS:
* Zero if everything went ok, nonzero otherwise.
*/
bool drm_initial_config(struct drm_device *dev, bool can_grow)
{
struct drm_output *output;
struct drm_crtc *crtc;
int ret = false;
mutex_lock(&dev->mode_config.mutex);
drm_crtc_probe_output_modes(dev, 2048, 2048);
drm_pick_crtcs(dev);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
/* can't setup the crtc if there's no assigned mode */
if (!crtc->desired_mode)
continue;
/* Now setup the fbdev for attached crtcs */
dev->driver->fb_probe(dev, crtc);
}
/* This is a little screwy, as we've already walked the outputs
* above, but it's a little bit of magic too. There's the potential
* for things not to get setup above if an existing device gets
* re-assigned thus confusing the hardware. By walking the outputs
* this fixes up their crtc's.
*/
list_for_each_entry(output, &dev->mode_config.output_list, head) {
/* can't setup the output if there's no assigned mode */
if (!output->crtc || !output->crtc->desired_mode)
continue;
/* and needs an attached fb */
if (output->crtc->fb)
drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0);
}
drm_disable_unused_functions(dev);
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
EXPORT_SYMBOL(drm_initial_config);
/**
* drm_mode_config_cleanup - free up DRM mode_config info
* @dev: DRM device
*
* LOCKING:
* Caller must hold mode config lock.
*
* Free up all the outputs and CRTCs associated with this DRM device, then
* free up the framebuffers and associated buffer objects.
*
* FIXME: cleanup any dangling user buffer objects too
*/
void drm_mode_config_cleanup(struct drm_device *dev)
{
struct drm_output *output, *ot;
struct drm_crtc *crtc, *ct;
struct drm_framebuffer *fb, *fbt;
struct drm_property *property, *pt;
list_for_each_entry_safe(output, ot, &dev->mode_config.output_list, head) {
drm_output_destroy(output);
}
list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, head) {
drm_property_destroy(dev, property);
}
list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
/* there should only be bo of kernel type left */
if (fb->bo->type != drm_bo_type_kernel)
drm_framebuffer_destroy(fb);
else
dev->driver->fb_remove(dev, drm_crtc_from_fb(dev, fb));
}
list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
drm_crtc_destroy(crtc);
}
}
EXPORT_SYMBOL(drm_mode_config_cleanup);
/**
* drm_crtc_set_config - set a new config from userspace
* @crtc: CRTC to setup
* @crtc_info: user provided configuration
* @new_mode: new mode to set
* @output_set: set of outputs for the new config
* @fb: new framebuffer
*
* LOCKING:
* Caller must hold mode config lock.
*
* Setup a new configuration, provided by the user in @crtc_info, and enable
* it.
*
* RETURNS:
* Zero. (FIXME)
*/
int drm_crtc_set_config(struct drm_crtc *crtc, struct drm_mode_crtc *crtc_info, struct drm_display_mode *new_mode, struct drm_output **output_set, struct drm_framebuffer *fb)
{
struct drm_device *dev = crtc->dev;
struct drm_crtc **save_crtcs, *new_crtc;
bool save_enabled = crtc->enabled;
bool changed = false;
bool flip_or_move = false;
struct drm_output *output;
int count = 0, ro;
save_crtcs = kzalloc(dev->mode_config.num_crtc * sizeof(struct drm_crtc *), GFP_KERNEL);
if (!save_crtcs)
return -ENOMEM;
/* We should be able to check here if the fb has the same properties
* and then just flip_or_move it */
if (crtc->fb != fb)
changed = true;
if (crtc_info->x != crtc->x || crtc_info->y != crtc->y)
flip_or_move = true;
if (new_mode && !drm_mode_equal(new_mode, &crtc->mode))
changed = true;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
save_crtcs[count++] = output->crtc;
if (output->crtc == crtc)
new_crtc = NULL;
else
new_crtc = output->crtc;
for (ro = 0; ro < crtc_info->count_outputs; ro++) {
if (output_set[ro] == output)
new_crtc = crtc;
}
if (new_crtc != output->crtc) {
changed = true;
output->crtc = new_crtc;
}
}
/* mode_set_base is not a required function */
if (flip_or_move && !crtc->funcs->mode_set_base)
changed = true;
if (changed) {
crtc->fb = fb;
crtc->enabled = (new_mode != NULL);
if (new_mode != NULL) {
DRM_DEBUG("attempting to set mode from userspace\n");
drm_mode_debug_printmodeline(dev, new_mode);
if (!drm_crtc_set_mode(crtc, new_mode, crtc_info->x,
crtc_info->y)) {
crtc->enabled = save_enabled;
count = 0;
list_for_each_entry(output, &dev->mode_config.output_list, head)
output->crtc = save_crtcs[count++];
kfree(save_crtcs);
return -EINVAL;
}
crtc->desired_x = crtc_info->x;
crtc->desired_y = crtc_info->y;
crtc->desired_mode = new_mode;
}
drm_disable_unused_functions(dev);
} else if (flip_or_move) {
crtc->funcs->mode_set_base(crtc, crtc_info->x, crtc_info->y);
}
kfree(save_crtcs);
return 0;
}
/**
* drm_hotplug_stage_two
* @dev DRM device
* @output hotpluged output
*
* LOCKING.
* Caller must hold mode config lock, function might grap struct lock.
*
* Stage two of a hotplug.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_hotplug_stage_two(struct drm_device *dev, struct drm_output *output)
{
int has_config = 0;
if (output->crtc && output->crtc->desired_mode) {
DRM_DEBUG("drm thinks that the output already has a config\n");
has_config = 1;
}
drm_crtc_probe_output_modes(dev, 2048, 2048);
if (!has_config)
drm_pick_crtcs(dev);
if (!output->crtc || !output->crtc->desired_mode) {
DRM_DEBUG("could not find a desired mode or crtc for output\n");
return 1;
}
/* We should realy check if there is a fb using this crtc */
if (!has_config)
dev->driver->fb_probe(dev, output->crtc);
else {
dev->driver->fb_resize(dev, output->crtc);
if (!drm_crtc_set_mode(output->crtc, output->crtc->desired_mode, 0, 0))
DRM_ERROR("failed to set mode after hotplug\n");
}
drm_disable_unused_functions(dev);
return 0;
}
EXPORT_SYMBOL(drm_hotplug_stage_two);
/**
* drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
* @out: drm_mode_modeinfo struct to return to the user
* @in: drm_display_mode to use
*
* LOCKING:
* None.
*
* Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
* the user.
*/
void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, struct drm_display_mode *in)
{
out->clock = in->clock;
out->hdisplay = in->hdisplay;
out->hsync_start = in->hsync_start;
out->hsync_end = in->hsync_end;
out->htotal = in->htotal;
out->hskew = in->hskew;
out->vdisplay = in->vdisplay;
out->vsync_start = in->vsync_start;
out->vsync_end = in->vsync_end;
out->vtotal = in->vtotal;
out->vscan = in->vscan;
out->vrefresh = in->vrefresh;
out->flags = in->flags;
out->type = in->type;
strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
}
/**
* drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
* @out: drm_display_mode to return to the user
* @in: drm_mode_modeinfo to use
*
* LOCKING:
* None.
*
* Convert a drmo_mode_modeinfo into a drm_display_mode structure to return to
* the caller.
*/
void drm_crtc_convert_umode(struct drm_display_mode *out, struct drm_mode_modeinfo *in)
{
out->clock = in->clock;
out->hdisplay = in->hdisplay;
out->hsync_start = in->hsync_start;
out->hsync_end = in->hsync_end;
out->htotal = in->htotal;
out->hskew = in->hskew;
out->vdisplay = in->vdisplay;
out->vsync_start = in->vsync_start;
out->vsync_end = in->vsync_end;
out->vtotal = in->vtotal;
out->vscan = in->vscan;
out->vrefresh = in->vrefresh;
out->flags = in->flags;
out->type = in->type;
strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
}
/**
* drm_mode_getresources - get graphics configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Construct a set of configuration description structures and return
* them to the user, including CRTC, output and framebuffer configuration.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getresources(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_card_res *card_res = data;
struct list_head *lh;
struct drm_framebuffer *fb;
struct drm_output *output;
struct drm_crtc *crtc;
int ret = 0;
int output_count = 0;
int crtc_count = 0;
int fb_count = 0;
int copied = 0;
uint32_t __user *fb_id;
uint32_t __user *crtc_id;
uint32_t __user *output_id;
mutex_lock(&dev->mode_config.mutex);
list_for_each(lh, &dev->mode_config.fb_list)
fb_count++;
list_for_each(lh, &dev->mode_config.crtc_list)
crtc_count++;
list_for_each(lh, &dev->mode_config.output_list)
output_count++;
card_res->max_height = dev->mode_config.max_height;
card_res->min_height = dev->mode_config.min_height;
card_res->max_width = dev->mode_config.max_width;
card_res->min_width = dev->mode_config.min_width;
/* handle this in 4 parts */
/* FBs */
if (card_res->count_fbs >= fb_count) {
copied = 0;
fb_id = (uint32_t *)(unsigned long)card_res->fb_id_ptr;
list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
if (put_user(fb->id, fb_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
card_res->count_fbs = fb_count;
/* CRTCs */
if (card_res->count_crtcs >= crtc_count) {
copied = 0;
crtc_id = (uint32_t *)(unsigned long)card_res->crtc_id_ptr;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head){
DRM_DEBUG("CRTC ID is %d\n", crtc->id);
if (put_user(crtc->id, crtc_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
card_res->count_crtcs = crtc_count;
/* Outputs */
if (card_res->count_outputs >= output_count) {
copied = 0;
output_id = (uint32_t *)(unsigned long)card_res->output_id_ptr;
list_for_each_entry(output, &dev->mode_config.output_list,
head) {
DRM_DEBUG("OUTPUT ID is %d\n", output->id);
if (put_user(output->id, output_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
card_res->count_outputs = output_count;
DRM_DEBUG("Counted %d %d\n", card_res->count_crtcs,
card_res->count_outputs);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_getcrtc - get CRTC configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Construct a CRTC configuration structure to return to the user.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getcrtc(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_crtc *crtc_resp = data;
struct drm_crtc *crtc;
struct drm_output *output;
int ocount;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
crtc = idr_find(&dev->mode_config.crtc_idr, crtc_resp->crtc_id);
if (!crtc || (crtc->id != crtc_resp->crtc_id)) {
ret = -EINVAL;
goto out;
}
crtc_resp->x = crtc->x;
crtc_resp->y = crtc->y;
if (crtc->fb)
crtc_resp->fb_id = crtc->fb->id;
else
crtc_resp->fb_id = 0;
crtc_resp->outputs = 0;
if (crtc->enabled) {
drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
crtc_resp->mode_valid = 1;
ocount = 0;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (output->crtc == crtc)
crtc_resp->outputs |= 1 << (ocount++);
}
} else {
crtc_resp->mode_valid = 0;
}
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_getoutput - get output configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Construct a output configuration structure to return to the user.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getoutput(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_get_output *out_resp = data;
struct drm_output *output;
struct drm_display_mode *mode;
int mode_count = 0;
int props_count = 0;
int ret = 0;
int copied = 0;
int i;
struct drm_mode_modeinfo u_mode;
struct drm_mode_modeinfo __user *mode_ptr;
uint32_t __user *prop_ptr;
uint64_t __user *prop_values;
memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
DRM_DEBUG("output id %d:\n", out_resp->output);
mutex_lock(&dev->mode_config.mutex);
output= idr_find(&dev->mode_config.crtc_idr, out_resp->output);
if (!output || (output->id != out_resp->output)) {
ret = -EINVAL;
goto out;
}
list_for_each_entry(mode, &output->modes, head)
mode_count++;
for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
if (output->property_ids[i] != 0) {
props_count++;
}
}
if (out_resp->count_modes == 0) {
drm_crtc_probe_single_output_modes(output, dev->mode_config.max_width, dev->mode_config.max_height);
}
out_resp->output_type = output->output_type;
out_resp->output_type_id = output->output_type_id;
out_resp->mm_width = output->mm_width;
out_resp->mm_height = output->mm_height;
out_resp->subpixel = output->subpixel_order;
out_resp->connection = output->status;
if (output->crtc)
out_resp->crtc = output->crtc->id;
else
out_resp->crtc = 0;
out_resp->crtcs = output->possible_crtcs;
out_resp->clones = output->possible_clones;
if ((out_resp->count_modes >= mode_count) && mode_count) {
copied = 0;
mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
list_for_each_entry(mode, &output->modes, head) {
drm_crtc_convert_to_umode(&u_mode, mode);
if (copy_to_user(mode_ptr + copied,
&u_mode, sizeof(u_mode))) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
out_resp->count_modes = mode_count;
if ((out_resp->count_props >= props_count) && props_count) {
copied = 0;
prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
if (output->property_ids[i] != 0) {
if (put_user(output->property_ids[i], prop_ptr + copied)) {
ret = -EFAULT;
goto out;
}
if (put_user(output->property_values[i], prop_values + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
}
out_resp->count_props = props_count;
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_setcrtc - set CRTC configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Build a new CRTC configuration based on user request.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_setcrtc(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_crtc *crtc_req = data;
struct drm_crtc *crtc;
struct drm_output **output_set = NULL, *output;
struct drm_framebuffer *fb = NULL;
struct drm_display_mode *mode = NULL;
int ret = 0;
int i;
uint32_t __user *set_outputs_ptr;
mutex_lock(&dev->mode_config.mutex);
crtc = idr_find(&dev->mode_config.crtc_idr, crtc_req->crtc_id);
if (!crtc || (crtc->id != crtc_req->crtc_id)) {
DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id);
ret = -EINVAL;
goto out;
}
if (crtc_req->mode_valid) {
/* if we have a mode we need a framebuffer */
if (crtc_req->fb_id) {
fb = idr_find(&dev->mode_config.crtc_idr, crtc_req->fb_id);
if (!fb || (fb->id != crtc_req->fb_id)) {
DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id);
ret = -EINVAL;
goto out;
}
}
mode = drm_mode_create(dev);
drm_crtc_convert_umode(mode, &crtc_req->mode);
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
}
if (crtc_req->count_outputs == 0 && mode) {
DRM_DEBUG("Count outputs is 0 but mode set\n");
ret = -EINVAL;
goto out;
}
if (crtc_req->count_outputs > 0 && !mode && !fb) {
DRM_DEBUG("Count outputs is %d but no mode or fb set\n", crtc_req->count_outputs);
ret = -EINVAL;
goto out;
}
if (crtc_req->count_outputs > 0) {
u32 out_id;
/* Maybe we should check that count_outputs is a sensible value. */
output_set = kmalloc(crtc_req->count_outputs *
sizeof(struct drm_output *), GFP_KERNEL);
if (!output_set) {
ret = -ENOMEM;
goto out;
}
for (i = 0; i < crtc_req->count_outputs; i++) {
set_outputs_ptr = (uint32_t *)(unsigned long)crtc_req->set_outputs_ptr;
if (get_user(out_id, &set_outputs_ptr[i])) {
ret = -EFAULT;
goto out;
}
output = idr_find(&dev->mode_config.crtc_idr, out_id);
if (!output || (out_id != output->id)) {
DRM_DEBUG("Output id %d unknown\n", out_id);
ret = -EINVAL;
goto out;
}
output_set[i] = output;
}
}
/* What happens to output_set, leak? */
ret = drm_crtc_set_config(crtc, crtc_req, mode, output_set, fb);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_cursor_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_cursor *req = data;
struct drm_crtc *crtc;
struct drm_buffer_object *bo = NULL; /* must be set */
int ret = 0;
DRM_DEBUG("\n");
if (!req->flags) {
DRM_ERROR("no operation set\n");
return -EINVAL;
}
mutex_lock(&dev->mode_config.mutex);
crtc = idr_find(&dev->mode_config.crtc_idr, req->crtc);
if (!crtc || (crtc->id != req->crtc)) {
DRM_DEBUG("Unknown CRTC ID %d\n", req->crtc);
ret = -EINVAL;
goto out;
}
if (req->flags & DRM_MODE_CURSOR_BO) {
/* Turn of the cursor if handle is 0 */
if (req->handle)
ret = drm_get_buffer_object(dev, &bo, req->handle);
if (ret) {
DRM_ERROR("invalid buffer id\n");
ret = -EINVAL;
goto out;
}
if (crtc->funcs->cursor_set) {
ret = crtc->funcs->cursor_set(crtc, bo, req->width, req->height);
} else {
DRM_ERROR("crtc does not support cursor\n");
ret = -EFAULT;
goto out;
}
}
if (req->flags & DRM_MODE_CURSOR_MOVE) {
if (crtc->funcs->cursor_move) {
ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
} else {
DRM_ERROR("crtc does not support cursor\n");
ret = -EFAULT;
goto out;
}
}
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_addfb - add an FB to the graphics configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Add a new FB to the specified CRTC, given a user request.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_addfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_fb_cmd *r = data;
struct drm_mode_config *config = &dev->mode_config;
struct drm_framebuffer *fb;
struct drm_buffer_object *bo;
int ret = 0;
if ((config->min_width > r->width) || (r->width > config->max_width)) {
DRM_ERROR("mode new framebuffer width not within limits\n");
return -EINVAL;
}
if ((config->min_height > r->height) || (r->height > config->max_height)) {
DRM_ERROR("mode new framebuffer height not within limits\n");
return -EINVAL;
}
mutex_lock(&dev->mode_config.mutex);
/* TODO check limits are okay */
ret = drm_get_buffer_object(dev, &bo, r->handle);
if (ret || !bo) {
DRM_ERROR("BO handle not valid\n");
ret = -EINVAL;
goto out;
}
/* TODO check buffer is sufficently large */
/* TODO setup destructor callback */
fb = drm_framebuffer_create(dev);
if (!fb) {
DRM_ERROR("could not create framebuffer\n");
ret = -EINVAL;
goto out;
}
fb->width = r->width;
fb->height = r->height;
fb->pitch = r->pitch;
fb->bits_per_pixel = r->bpp;
fb->depth = r->depth;
fb->offset = bo->offset;
fb->bo = bo;
r->buffer_id = fb->id;
list_add(&fb->filp_head, &file_priv->fbs);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_rmfb - remove an FB from the configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Remove the FB specified by the user.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_rmfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_framebuffer *fb = 0;
struct drm_framebuffer *fbl = 0;
uint32_t *id = data;
int ret = 0;
int found = 0;
mutex_lock(&dev->mode_config.mutex);
fb = idr_find(&dev->mode_config.crtc_idr, *id);
/* TODO check that we realy get a framebuffer back. */
if (!fb || (*id != fb->id)) {
DRM_ERROR("mode invalid framebuffer id\n");
ret = -EINVAL;
goto out;
}
list_for_each_entry(fbl, &file_priv->fbs, filp_head)
if (fb == fbl)
found = 1;
if (!found) {
DRM_ERROR("tried to remove a fb that we didn't own\n");
ret = -EINVAL;
goto out;
}
/* TODO release all crtc connected to the framebuffer */
/* TODO unhock the destructor from the buffer object */
if (fb->bo->type == drm_bo_type_kernel)
DRM_ERROR("the bo type should not be of kernel type\n");
list_del(&fb->filp_head);
drm_framebuffer_destroy(fb);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_getfb - get FB info
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Lookup the FB given its ID and return info about it.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_fb_cmd *r = data;
struct drm_framebuffer *fb;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
fb = idr_find(&dev->mode_config.crtc_idr, r->buffer_id);
if (!fb || (r->buffer_id != fb->id)) {
DRM_ERROR("invalid framebuffer id\n");
ret = -EINVAL;
goto out;
}
r->height = fb->height;
r->width = fb->width;
r->depth = fb->depth;
r->bpp = fb->bits_per_pixel;
r->handle = fb->bo->base.hash.key;
r->pitch = fb->pitch;
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_fb_release - remove and free the FBs on this file
* @filp: file * from the ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Destroy all the FBs associated with @filp.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
void drm_fb_release(struct file *filp)
{
struct drm_file *priv = filp->private_data;
struct drm_device *dev = priv->minor->dev;
struct drm_framebuffer *fb, *tfb;
mutex_lock(&dev->mode_config.mutex);
list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
list_del(&fb->filp_head);
if (fb->bo->type == drm_bo_type_kernel)
DRM_ERROR("the bo type should not be of kernel_type, the kernel will probably explode, why Dave\n");
drm_framebuffer_destroy(fb);
}
mutex_unlock(&dev->mode_config.mutex);
}
/*
*
*/
static int drm_mode_attachmode(struct drm_device *dev,
struct drm_output *output,
struct drm_display_mode *mode)
{
int ret = 0;
list_add_tail(&mode->head, &output->user_modes);
return ret;
}
int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_display_mode *mode)
{
struct drm_output *output;
int ret = 0;
struct drm_display_mode *dup_mode;
int need_dup = 0;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
if (output->crtc == crtc) {
if (need_dup)
dup_mode = drm_mode_duplicate(dev, mode);
else
dup_mode = mode;
ret = drm_mode_attachmode(dev, output, dup_mode);
if (ret)
return ret;
need_dup = 1;
}
}
return 0;
}
EXPORT_SYMBOL(drm_mode_attachmode_crtc);
static int drm_mode_detachmode(struct drm_device *dev,
struct drm_output *output,
struct drm_display_mode *mode)
{
int found = 0;
int ret = 0;
struct drm_display_mode *match_mode, *t;
list_for_each_entry_safe(match_mode, t, &output->user_modes, head) {
if (drm_mode_equal(match_mode, mode)) {
list_del(&match_mode->head);
drm_mode_destroy(dev, match_mode);
found = 1;
break;
}
}
if (!found)
ret = -EINVAL;
return ret;
}
int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
{
struct drm_output *output;
list_for_each_entry(output, &dev->mode_config.output_list, head) {
drm_mode_detachmode(dev, output, mode);
}
return 0;
}
EXPORT_SYMBOL(drm_mode_detachmode_crtc);
/**
* drm_fb_attachmode - Attach a user mode to an output
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* This attaches a user specified mode to an output.
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_attachmode_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_mode_cmd *mode_cmd = data;
struct drm_output *output;
struct drm_display_mode *mode;
struct drm_mode_modeinfo *umode = &mode_cmd->mode;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
if (!output || (output->id != mode_cmd->output_id)) {
ret = -EINVAL;
goto out;
}
mode = drm_mode_create(dev);
if (!mode) {
ret = -ENOMEM;
goto out;
}
drm_crtc_convert_umode(mode, umode);
ret = drm_mode_attachmode(dev, output, mode);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_fb_detachmode - Detach a user specified mode from an output
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_detachmode_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_mode_cmd *mode_cmd = data;
struct drm_output *output;
struct drm_display_mode mode;
struct drm_mode_modeinfo *umode = &mode_cmd->mode;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
output = idr_find(&dev->mode_config.crtc_idr, mode_cmd->output_id);
if (!output || (output->id != mode_cmd->output_id)) {
ret = -EINVAL;
goto out;
}
drm_crtc_convert_umode(&mode, umode);
ret = drm_mode_detachmode(dev, output, &mode);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
struct drm_property *drm_property_create(struct drm_device *dev, int flags,
const char *name, int num_values)
{
struct drm_property *property = NULL;
property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
if (!property)
return NULL;
if (num_values) {
property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
if (!property->values)
goto fail;
}
property->id = drm_idr_get(dev, property);
property->flags = flags;
property->num_values = num_values;
INIT_LIST_HEAD(&property->enum_blob_list);
if (name)
strncpy(property->name, name, DRM_PROP_NAME_LEN);
list_add_tail(&property->head, &dev->mode_config.property_list);
return property;
fail:
kfree(property);
return NULL;
}
EXPORT_SYMBOL(drm_property_create);
int drm_property_add_enum(struct drm_property *property, int index,
uint64_t value, const char *name)
{
struct drm_property_enum *prop_enum;
if (!(property->flags & DRM_MODE_PROP_ENUM))
return -EINVAL;
if (!list_empty(&property->enum_blob_list)) {
list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
if (prop_enum->value == value) {
strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
return 0;
}
}
}
prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
if (!prop_enum)
return -ENOMEM;
strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
prop_enum->value = value;
property->values[index] = value;
list_add_tail(&prop_enum->head, &property->enum_blob_list);
return 0;
}
EXPORT_SYMBOL(drm_property_add_enum);
void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
{
struct drm_property_enum *prop_enum, *pt;
list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
list_del(&prop_enum->head);
kfree(prop_enum);
}
if (property->num_values)
kfree(property->values);
drm_idr_put(dev, property->id);
list_del(&property->head);
kfree(property);
}
EXPORT_SYMBOL(drm_property_destroy);
int drm_output_attach_property(struct drm_output *output,
struct drm_property *property, uint64_t init_val)
{
int i;
for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
if (output->property_ids[i] == 0) {
output->property_ids[i] = property->id;
output->property_values[i] = init_val;
break;
}
}
if (i == DRM_OUTPUT_MAX_PROPERTY)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL(drm_output_attach_property);
int drm_output_property_set_value(struct drm_output *output,
struct drm_property *property, uint64_t value)
{
int i;
for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
if (output->property_ids[i] == property->id) {
output->property_values[i] = value;
break;
}
}
if (i == DRM_OUTPUT_MAX_PROPERTY)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL(drm_output_property_set_value);
int drm_mode_getproperty_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_get_property *out_resp = data;
struct drm_property *property;
int enum_count = 0;
int blob_count = 0;
int value_count = 0;
int ret = 0, i;
int copied;
struct drm_property_enum *prop_enum;
struct drm_mode_property_enum __user *enum_ptr;
struct drm_property_blob *prop_blob;
uint32_t *blob_id_ptr;
uint64_t __user *values_ptr;
uint32_t __user *blob_length_ptr;
mutex_lock(&dev->mode_config.mutex);
property = idr_find(&dev->mode_config.crtc_idr, out_resp->prop_id);
if (!property || (property->id != out_resp->prop_id)) {
ret = -EINVAL;
goto done;
}
if (property->flags & DRM_MODE_PROP_ENUM) {
list_for_each_entry(prop_enum, &property->enum_blob_list, head)
enum_count++;
} else if (property->flags & DRM_MODE_PROP_BLOB) {
list_for_each_entry(prop_blob, &property->enum_blob_list, head)
blob_count++;
}
value_count = property->num_values;
strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
out_resp->flags = property->flags;
if ((out_resp->count_values >= value_count) && value_count) {
values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
for (i = 0; i < value_count; i++) {
if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
ret = -EFAULT;
goto done;
}
}
}
out_resp->count_values = value_count;
if (property->flags & DRM_MODE_PROP_ENUM) {
if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
copied = 0;
enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
ret = -EFAULT;
goto done;
}
if (copy_to_user(&enum_ptr[copied].name,
&prop_enum->name, DRM_PROP_NAME_LEN)) {
ret = -EFAULT;
goto done;
}
copied++;
}
}
out_resp->count_enum_blobs = enum_count;
}
if (property->flags & DRM_MODE_PROP_BLOB) {
if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
copied = 0;
blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
if (put_user(prop_blob->id, blob_id_ptr + copied)) {
ret = -EFAULT;
goto done;
}
if (put_user(prop_blob->length, blob_length_ptr + copied)) {
ret = -EFAULT;
goto done;
}
copied++;
}
}
out_resp->count_enum_blobs = enum_count;
}
done:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
void *data)
{
struct drm_property_blob *blob;
if (!length || !data)
return NULL;
blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
if (!blob)
return NULL;
blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
blob->length = length;
memcpy(blob->data, data, length);
blob->id = drm_idr_get(dev, blob);
list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
return blob;
}
static void drm_property_destroy_blob(struct drm_device *dev,
struct drm_property_blob *blob)
{
drm_idr_put(dev, blob->id);
list_del(&blob->head);
kfree(blob);
}
int drm_mode_getblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_get_blob *out_resp = data;
struct drm_property_blob *blob;
int ret = 0;
void *blob_ptr;
mutex_lock(&dev->mode_config.mutex);
blob = idr_find(&dev->mode_config.crtc_idr, out_resp->blob_id);
if (!blob || (blob->id != out_resp->blob_id)) {
ret = -EINVAL;
goto done;
}
if (out_resp->length == blob->length) {
blob_ptr = (void *)(unsigned long)out_resp->data;
if (copy_to_user(blob_ptr, blob->data, blob->length)){
ret = -EFAULT;
goto done;
}
}
out_resp->length = blob->length;
done:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_output_update_edid_property(struct drm_output *output, unsigned char *edid)
{
struct drm_device *dev = output->dev;
int ret = 0;
if (output->edid_blob_ptr)
drm_property_destroy_blob(dev, output->edid_blob_ptr);
output->edid_blob_ptr = drm_property_create_blob(output->dev, 128, edid);
ret = drm_output_property_set_value(output, dev->mode_config.edid_property, output->edid_blob_ptr->id);
return ret;
}
EXPORT_SYMBOL(drm_mode_output_update_edid_property);
int drm_mode_output_property_set_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_output_set_property *out_resp = data;
struct drm_property *property;
struct drm_output *output;
int ret = -EINVAL;
int i;
mutex_lock(&dev->mode_config.mutex);
output = idr_find(&dev->mode_config.crtc_idr, out_resp->output_id);
if (!output || (output->id != out_resp->output_id)) {
goto out;
}
for (i = 0; i < DRM_OUTPUT_MAX_PROPERTY; i++) {
if (output->property_ids[i] == out_resp->prop_id)
break;
}
if (i == DRM_OUTPUT_MAX_PROPERTY) {
goto out;
}
property = idr_find(&dev->mode_config.crtc_idr, out_resp->prop_id);
if (!property || (property->id != out_resp->prop_id)) {
goto out;
}
if (property->flags & DRM_MODE_PROP_IMMUTABLE)
goto out;
if (property->flags & DRM_MODE_PROP_RANGE) {
if (out_resp->value < property->values[0])
goto out;
if (out_resp->value > property->values[1])
goto out;
} else {
int found = 0;
for (i = 0; i < property->num_values; i++) {
if (property->values[i] == out_resp->value) {
found = 1;
break;
}
}
if (!found) {
goto out;
}
}
if (output->funcs->set_property)
ret = output->funcs->set_property(output, property, out_resp->value);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
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