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drm/libdrm/xf86drmMode.c

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/*
* \file xf86drmMode.c
* Header for DRM modesetting interface.
*
* \author Jakob Bornecrantz <wallbraker@gmail.com>
*
* \par Acknowledgements:
* Feb 2007, Dave Airlie <airlied@linux.ie>
*/
/*
* Copyright (c) <year> <copyright holders>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
/*
* TODO the types we are after are defined in diffrent headers on diffrent
* platforms find which headers to include to get uint32_t
*/
#include <stdint.h>
#include "xf86drmMode.h"
#include "xf86drm.h"
#include <drm.h>
#include <string.h>
/*
* Util functions
*/
void* drmAllocCpy(void *array, int count, int entry_size)
{
char *r;
int i;
if (!count || !array || !entry_size)
return 0;
if (!(r = drmMalloc(count*entry_size)))
return 0;
for (i = 0; i < count; i++)
memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
return r;
}
/**
* Generate crtc and output ids.
*
* Will generate ids starting from 1 up to count if count is greater then 0.
*/
static uint32_t* drmAllocGenerate(int count)
{
uint32_t *r;
int i;
if(0 <= count)
return 0;
if (!(r = drmMalloc(count*sizeof(*r))))
return 0;
for (i = 0; i < count; r[i] = ++i);
return 0;
}
/*
* A couple of free functions.
*/
void drmModeFreeModeInfo(struct drm_mode_modeinfo *ptr)
{
if (!ptr)
return;
drmFree(ptr);
}
void drmModeFreeResources(drmModeResPtr ptr)
{
if (!ptr)
return;
drmFree(ptr);
}
void drmModeFreeFB(drmModeFBPtr ptr)
{
if (!ptr)
return;
/* we might add more frees later. */
drmFree(ptr);
}
void drmModeFreeCrtc(drmModeCrtcPtr ptr)
{
if (!ptr)
return;
drmFree(ptr);
}
void drmModeFreeOutput(drmModeOutputPtr ptr)
{
if (!ptr)
return;
drmFree(ptr->modes);
drmFree(ptr);
}
/*
* ModeSetting functions.
*/
drmModeResPtr drmModeGetResources(int fd)
{
struct drm_mode_card_res res;
int i;
drmModeResPtr r = 0;
memset(&res, 0, sizeof(struct drm_mode_card_res));
if (ioctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
return 0;
if (res.count_fbs)
res.fb_id = drmMalloc(res.count_fbs*sizeof(uint32_t));
if (res.count_crtcs)
res.crtc_id = drmMalloc(res.count_crtcs*sizeof(uint32_t));
if (res.count_outputs)
res.output_id = drmMalloc(res.count_outputs*sizeof(uint32_t));
if (ioctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res)) {
r = NULL;
goto err_allocs;
}
/*
* return
*/
if (!(r = drmMalloc(sizeof(*r))))
return 0;
r->count_fbs = res.count_fbs;
r->count_crtcs = res.count_crtcs;
r->count_outputs = res.count_outputs;
/* TODO we realy should test if these allocs fails. */
r->fbs = drmAllocCpy(res.fb_id, res.count_fbs, sizeof(uint32_t));
r->crtcs = drmAllocCpy(res.crtc_id, res.count_crtcs, sizeof(uint32_t));
r->outputs = drmAllocCpy(res.output_id, res.count_outputs, sizeof(uint32_t));
err_allocs:
drmFree(res.fb_id);
drmFree(res.crtc_id);
drmFree(res.output_id);
return r;
}
int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
uint8_t bpp, uint32_t pitch, drmBO *bo, uint32_t *buf_id)
{
struct drm_mode_fb_cmd f;
int ret;
f.width = width;
f.height = height;
f.pitch = pitch;
f.bpp = bpp;
f.depth = depth;
f.handle = bo->handle;
if (ret = ioctl(fd, DRM_IOCTL_MODE_ADDFB, &f))
return ret;
*buf_id = f.buffer_id;
return 0;
}
int drmModeRmFB(int fd, uint32_t bufferId)
{
return ioctl(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
}
drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
{
struct drm_mode_fb_cmd info;
drmModeFBPtr r;
info.buffer_id = buf;
if (ioctl(fd, DRM_IOCTL_MODE_GETFB, &info))
return NULL;
if (!(r = drmMalloc(sizeof(*r))))
return NULL;
r->buffer_id = info.buffer_id;
r->width = info.width;
r->height = info.height;
r->pitch = info.pitch;
r->bpp = info.bpp;
r->handle = info.handle;
r->depth = info.depth;
return r;
}
/*
* Crtc functions
*/
drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
{
struct drm_mode_crtc crtc;
drmModeCrtcPtr r;
int i = 0;
crtc.count_outputs = 0;
crtc.outputs = 0;
crtc.count_possibles = 0;
crtc.possibles = 0;
crtc.crtc_id = crtcId;
if (ioctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
return 0;
/*
* return
*/
if (!(r = drmMalloc(sizeof(*r))))
return 0;
r->crtc_id = crtc.crtc_id;
r->x = crtc.x;
r->y = crtc.y;
r->mode = crtc.mode;
r->buffer_id = crtc.fb_id;
r->gamma_size = crtc.gamma_size;
r->count_outputs = crtc.count_outputs;
r->count_possibles = crtc.count_possibles;
/* TODO we realy should test if these alloc & cpy fails. */
r->outputs = crtc.outputs;
r->possibles = crtc.possibles;
return r;
err_allocs:
return 0;
}
int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
uint32_t x, uint32_t y, uint32_t *outputs, int count,
struct drm_mode_modeinfo *mode)
{
struct drm_mode_crtc crtc;
crtc.count_outputs = 0;
crtc.outputs = 0;
crtc.count_possibles = 0;
crtc.possibles = 0;
crtc.x = x;
crtc.y = y;
crtc.crtc_id = crtcId;
crtc.fb_id = bufferId;
crtc.set_outputs = outputs;
crtc.count_outputs = count;
if (mode) {
memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
crtc.mode_valid = 1;
} else
crtc.mode_valid = 0;
return ioctl(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
}
/*
* Output manipulation
*/
drmModeOutputPtr drmModeGetOutput(int fd, uint32_t output_id)
{
struct drm_mode_get_output out;
drmModeOutputPtr r = NULL;
out.output = output_id;
out.count_crtcs = 0;
out.crtcs = 0;
out.count_clones = 0;
out.clones = 0;
out.count_modes = 0;
out.modes = 0;
out.count_props = 0;
out.props = NULL;
out.prop_values = NULL;
if (ioctl(fd, DRM_IOCTL_MODE_GETOUTPUT, &out))
return 0;
if (out.count_props) {
out.props = drmMalloc(out.count_props*sizeof(uint32_t));
out.prop_values = drmMalloc(out.count_props*sizeof(uint32_t));
}
if (out.count_modes)
out.modes = drmMalloc(out.count_modes*sizeof(struct drm_mode_modeinfo));
if (ioctl(fd, DRM_IOCTL_MODE_GETOUTPUT, &out))
goto err_allocs;
if(!(r = drmMalloc(sizeof(*r)))) {
goto err_allocs;
}
r->output_id = out.output;
r->crtc = out.crtc;
r->connection = out.connection;
r->mmWidth = out.mm_width;
r->mmHeight = out.mm_height;
r->subpixel = out.subpixel;
r->count_crtcs = out.count_crtcs;
r->count_clones = out.count_clones;
r->count_modes = out.count_modes;
/* TODO we should test if these alloc & cpy fails. */
r->crtcs = out.crtcs;
r->clones = out.clones;
r->count_props = out.count_props;
r->props = drmAllocCpy(out.props, out.count_props, sizeof(uint32_t));
r->prop_values = drmAllocCpy(out.prop_values, out.count_props, sizeof(uint32_t));
r->modes = drmAllocCpy(out.modes, out.count_modes, sizeof(struct drm_mode_modeinfo));
strncpy(r->name, out.name, DRM_OUTPUT_NAME_LEN);
r->name[DRM_OUTPUT_NAME_LEN-1] = 0;
err_allocs:
drmFree(out.prop_values);
drmFree(out.props);
drmFree(out.modes);
return r;
}
int drmModeAttachMode(int fd, uint32_t output_id, struct drm_mode_modeinfo *mode_info)
{
struct drm_mode_mode_cmd res;
memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
res.output_id = output_id;
return ioctl(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
}
int drmModeDetachMode(int fd, uint32_t output_id, struct drm_mode_modeinfo *mode_info)
{
struct drm_mode_mode_cmd res;
memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
res.output_id = output_id;
return ioctl(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
}
drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
{
struct drm_mode_get_property prop;
drmModePropertyPtr r;
prop.prop_id = property_id;
prop.count_enums = 0;
prop.count_values = 0;
prop.flags = 0;
prop.enums = NULL;
prop.values = NULL;
if (ioctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
return 0;
if (prop.count_values)
prop.values = drmMalloc(prop.count_values * sizeof(uint32_t));
if (prop.count_enums)
prop.enums = drmMalloc(prop.count_enums * sizeof(struct drm_mode_property_enum));
if (ioctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
r = NULL;
goto err_allocs;
}
if (!(r = drmMalloc(sizeof(*r))))
return NULL;
r->prop_id = prop.prop_id;
r->count_values = prop.count_values;
r->count_enums = prop.count_enums;
r->values = drmAllocCpy(prop.values, prop.count_values, sizeof(uint32_t));
r->enums = drmAllocCpy(prop.enums, prop.count_enums, sizeof(struct drm_mode_property_enum));
strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
r->name[DRM_PROP_NAME_LEN-1] = 0;
err_allocs:
drmFree(prop.values);
drmFree(prop.enums);
return r;
}
void drmModeFreeProperty(drmModePropertyPtr ptr)
{
if (!ptr)
return;
drmFree(ptr->values);
drmFree(ptr->enums);
drmFree(ptr);
}
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