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/*
* Mesa 3-D graphics library
* Version: 7.9
*
* Copyright (C) 2010 LunarG Inc.
*
* 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.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/fb.h>
#include "pipe/p_screen.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "util/u_pointer.h"
#include "common/native.h"
#include "common/native_helper.h"
#include "fbdev/fbdev_sw_winsys.h"
struct fbdev_display {
struct native_display base;
int fd;
struct native_event_handler *event_handler;
struct fb_fix_screeninfo finfo;
struct fb_var_screeninfo vinfo;
struct native_config config;
struct native_connector connector;
struct native_mode mode;
struct fbdev_surface *current_surface;
};
struct fbdev_surface {
struct native_surface base;
struct fbdev_display *fbdpy;
struct resource_surface *rsurf;
int width, height;
unsigned int sequence_number;
boolean is_current;
};
static INLINE struct fbdev_display *
fbdev_display(const struct native_display *ndpy)
{
return (struct fbdev_display *) ndpy;
}
static INLINE struct fbdev_surface *
fbdev_surface(const struct native_surface *nsurf)
{
return (struct fbdev_surface *) nsurf;
}
static boolean
fbdev_surface_validate(struct native_surface *nsurf, uint attachment_mask,
unsigned int *seq_num, struct pipe_resource **textures,
int *width, int *height)
{
struct fbdev_surface *fbsurf = fbdev_surface(nsurf);
if (!resource_surface_add_resources(fbsurf->rsurf, attachment_mask))
return FALSE;
if (textures)
resource_surface_get_resources(fbsurf->rsurf, textures, attachment_mask);
if (seq_num)
*seq_num = fbsurf->sequence_number;
if (width)
*width = fbsurf->width;
if (height)
*height = fbsurf->height;
return TRUE;
}
static boolean
fbdev_surface_flush_frontbuffer(struct native_surface *nsurf)
{
struct fbdev_surface *fbsurf = fbdev_surface(nsurf);
if (!fbsurf->is_current)
return TRUE;
return resource_surface_present(fbsurf->rsurf,
NATIVE_ATTACHMENT_FRONT_LEFT, NULL);
}
static boolean
fbdev_surface_swap_buffers(struct native_surface *nsurf)
{
struct fbdev_surface *fbsurf = fbdev_surface(nsurf);
struct fbdev_display *fbdpy = fbsurf->fbdpy;
boolean ret = TRUE;
if (fbsurf->is_current) {
ret = resource_surface_present(fbsurf->rsurf,
NATIVE_ATTACHMENT_BACK_LEFT, NULL);
}
resource_surface_swap_buffers(fbsurf->rsurf,
NATIVE_ATTACHMENT_FRONT_LEFT, NATIVE_ATTACHMENT_BACK_LEFT, TRUE);
/* the front/back textures are swapped */
fbsurf->sequence_number++;
fbdpy->event_handler->invalid_surface(&fbdpy->base,
&fbsurf->base, fbsurf->sequence_number);
return ret;
}
static void
fbdev_surface_wait(struct native_surface *nsurf)
{
/* no-op */
}
static void
fbdev_surface_destroy(struct native_surface *nsurf)
{
struct fbdev_surface *fbsurf = fbdev_surface(nsurf);
resource_surface_destroy(fbsurf->rsurf);
FREE(fbsurf);
}
static struct native_surface *
fbdev_display_create_scanout_surface(struct native_display *ndpy,
const struct native_config *nconf,
uint width, uint height)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
struct fbdev_surface *fbsurf;
fbsurf = CALLOC_STRUCT(fbdev_surface);
if (!fbsurf)
return NULL;
fbsurf->fbdpy = fbdpy;
fbsurf->width = width;
fbsurf->height = height;
fbsurf->rsurf = resource_surface_create(fbdpy->base.screen,
nconf->color_format,
PIPE_BIND_RENDER_TARGET |
PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT);
if (!fbsurf->rsurf) {
FREE(fbsurf);
return NULL;
}
resource_surface_set_size(fbsurf->rsurf, fbsurf->width, fbsurf->height);
fbsurf->base.destroy = fbdev_surface_destroy;
fbsurf->base.swap_buffers = fbdev_surface_swap_buffers;
fbsurf->base.flush_frontbuffer = fbdev_surface_flush_frontbuffer;
fbsurf->base.validate = fbdev_surface_validate;
fbsurf->base.wait = fbdev_surface_wait;
return &fbsurf->base;
}
static boolean
fbdev_display_program(struct native_display *ndpy, int crtc_idx,
struct native_surface *nsurf, uint x, uint y,
const struct native_connector **nconns, int num_nconns,
const struct native_mode *nmode)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
struct fbdev_surface *fbsurf = fbdev_surface(nsurf);
if (x || y)
return FALSE;
if (fbdpy->current_surface) {
if (fbdpy->current_surface == fbsurf)
return TRUE;
fbdpy->current_surface->is_current = FALSE;
}
if (fbsurf)
fbsurf->is_current = TRUE;
fbdpy->current_surface = fbsurf;
return TRUE;
}
static const struct native_mode **
fbdev_display_get_modes(struct native_display *ndpy,
const struct native_connector *nconn,
int *num_modes)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
const struct native_mode **modes;
modes = MALLOC(sizeof(*modes));
if (modes) {
modes[0] = &fbdpy->mode;
if (num_modes)
*num_modes = 1;
}
return modes;
}
static const struct native_connector **
fbdev_display_get_connectors(struct native_display *ndpy, int *num_connectors,
int *num_crtc)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
const struct native_connector **connectors;
connectors = MALLOC(sizeof(*connectors));
if (connectors) {
connectors[0] = &fbdpy->connector;
if (num_connectors)
*num_connectors = 1;
}
return connectors;
}
static struct native_display_modeset fbdev_display_modeset = {
.get_connectors = fbdev_display_get_connectors,
.get_modes = fbdev_display_get_modes,
.create_scanout_surface = fbdev_display_create_scanout_surface,
.program = fbdev_display_program
};
static const struct native_config **
fbdev_display_get_configs(struct native_display *ndpy, int *num_configs)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
const struct native_config **configs;
configs = MALLOC(sizeof(*configs));
if (configs) {
configs[0] = &fbdpy->config;
if (num_configs)
*num_configs = 1;
}
return configs;
}
static int
fbdev_display_get_param(struct native_display *ndpy,
enum native_param_type param)
{
int val;
switch (param) {
default:
val = 0;
break;
}
return val;
}
static void
fbdev_display_destroy(struct native_display *ndpy)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
fbdpy->base.screen->destroy(fbdpy->base.screen);
close(fbdpy->fd);
FREE(fbdpy);
}
static boolean
fbdev_display_init_modes(struct native_display *ndpy)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
struct native_mode *nmode = &fbdpy->mode;
nmode->desc = "Current Mode";
nmode->width = fbdpy->vinfo.xres;
nmode->height = fbdpy->vinfo.yres;
nmode->refresh_rate = 60 * 1000; /* dummy */
return TRUE;
}
static boolean
fbdev_display_init_connectors(struct native_display *ndpy)
{
return TRUE;
}
static enum pipe_format
vinfo_to_format(const struct fb_var_screeninfo *vinfo)
{
enum pipe_format format = PIPE_FORMAT_NONE;
switch (vinfo->bits_per_pixel) {
case 32:
if (vinfo->red.length == 8 &&
vinfo->green.length == 8 &&
vinfo->blue.length == 8) {
format = (vinfo->transp.length == 8) ?
PIPE_FORMAT_B8G8R8A8_UNORM : PIPE_FORMAT_B8G8R8X8_UNORM;
}
break;
case 16:
if (vinfo->red.length == 5 &&
vinfo->green.length == 6 &&
vinfo->blue.length == 5 &&
vinfo->transp.length == 0)
format = PIPE_FORMAT_B5G6R5_UNORM;
break;
default:
break;
}
return format;
}
static boolean
fbdev_display_init_configs(struct native_display *ndpy)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
struct native_config *nconf = &fbdpy->config;
nconf->color_format = vinfo_to_format(&fbdpy->vinfo);
if (nconf->color_format == PIPE_FORMAT_NONE)
return FALSE;
nconf->buffer_mask =
(1 << NATIVE_ATTACHMENT_FRONT_LEFT) |
(1 << NATIVE_ATTACHMENT_BACK_LEFT);
nconf->scanout_bit = TRUE;
return TRUE;
}
static boolean
fbdev_display_init(struct native_display *ndpy)
{
struct fbdev_display *fbdpy = fbdev_display(ndpy);
struct sw_winsys *ws;
if (ioctl(fbdpy->fd, FBIOGET_FSCREENINFO, &fbdpy->finfo))
return FALSE;
if (ioctl(fbdpy->fd, FBIOGET_VSCREENINFO, &fbdpy->vinfo))
return FALSE;
if (fbdpy->finfo.visual != FB_VISUAL_TRUECOLOR ||
fbdpy->finfo.type != FB_TYPE_PACKED_PIXELS)
return FALSE;
if (!fbdev_display_init_configs(&fbdpy->base) ||
!fbdev_display_init_connectors(&fbdpy->base) ||
!fbdev_display_init_modes(&fbdpy->base))
return FALSE;
ws = fbdev_create_sw_winsys(fbdpy->fd, fbdpy->config.color_format);
if (ws)
fbdpy->base.screen = native_create_sw_screen(ws);
if (fbdpy->base.screen) {
if (!fbdpy->base.screen->is_format_supported(fbdpy->base.screen,
fbdpy->config.color_format, PIPE_TEXTURE_2D, 0,
PIPE_BIND_RENDER_TARGET, 0)) {
fbdpy->base.screen->destroy(fbdpy->base.screen);
fbdpy->base.screen = NULL;
}
}
return (fbdpy->base.screen != NULL);
}
static struct native_display *
fbdev_display_create(int fd, struct native_event_handler *event_handler)
{
struct fbdev_display *fbdpy;
fbdpy = CALLOC_STRUCT(fbdev_display);
if (!fbdpy)
return NULL;
fbdpy->fd = fd;
fbdpy->event_handler = event_handler;
if (!fbdev_display_init(&fbdpy->base)) {
FREE(fbdpy);
return NULL;
}
fbdpy->base.destroy = fbdev_display_destroy;
fbdpy->base.get_param = fbdev_display_get_param;
fbdpy->base.get_configs = fbdev_display_get_configs;
fbdpy->base.modeset = &fbdev_display_modeset;
return &fbdpy->base;
}
static struct native_display *
native_create_display(void *dpy, struct native_event_handler *event_handler)
{
struct native_display *ndpy;
int fd;
/* well, this makes fd 0 being ignored */
if (!dpy) {
fd = open("/dev/fb0", O_RDWR);
}
else {
fd = dup((int) pointer_to_intptr(dpy));
}
if (fd < 0)
return NULL;
ndpy = fbdev_display_create(fd, event_handler);
if (!ndpy)
close(fd);
return ndpy;
}
static const struct native_platform fbdev_platform = {
"FBDEV", /* name */
NULL, /* create_probe */
NULL, /* get_probe_result */
native_create_display
};
const struct native_platform *
native_get_fbdev_platform(void)
{
return &fbdev_platform;
}
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