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framebuffer: ioctls

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Matheus
2022-09-30 19:37:41 -03:00
parent c99aa48b59
commit b049f7b436
1 changed files with 136 additions and 1 deletions
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src/video/framebuffer.c
+136 -1
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@@ -70,9 +70,144 @@ static int isseekable(int minor, size_t* max){
return 0;
}
#define FBIOGET_VSCREENINFO 0x4600
#define FBIOGET_FSCREENINFO 0x4602
struct fb_bitfield {
uint32_t offset;
uint32_t length;
uint32_t msb_right;
};
typedef struct{
uint32_t xres;
uint32_t yres;
uint32_t xres_virtual;
uint32_t yres_virtual;
uint32_t xoffset;
uint32_t yoffset;
uint32_t bits_per_pixel;
uint32_t grayscale;
struct fb_bitfield red;
struct fb_bitfield green;
struct fb_bitfield blue;
struct fb_bitfield transp;
uint32_t nonstd;
uint32_t activate;
uint32_t height;
uint32_t width;
uint32_t accel_flags;
uint32_t pixclock;
uint32_t left_margin;
uint32_t right_margin;
uint32_t upper_margin;
uint32_t lower_margin;
uint32_t hsync_len;
uint32_t vsync_len;
uint32_t sync;
uint32_t vmode;
uint32_t rotate;
uint32_t colorspace;
uint32_t reserved[4];
}fb_var_screeninfo;
typedef struct {
char id[16];
unsigned long smem_start;
uint32_t smem_len;
uint32_t type;
uint32_t type_aux;
uint32_t visual;
uint16_t xpanstep;
uint16_t ypanstep;
uint16_t ywrapstep;
uint32_t line_length;
unsigned long mmio_start;
uint32_t mmio_len;
uint32_t accel;
uint16_t capabilities;
uint16_t reserved[2];
} fb_fix_screeninfo;
#define FB_VISUAL_TRUECOLOR 2
#define FB_TYPE_PACKED_PIXELS 0
static int ioctl(int minor, unsigned long req, void* arg){
if(minor >= fbcount)
return ENODEV;
struct limine_framebuffer* fb = fbs[minor];
switch(req){
case FBIOGET_FSCREENINFO:
{
fb_fix_screeninfo* i = arg;
strcpy(i->id, "LIMINE FB");
i->smem_start = fb->address;
i->smem_len = fb->pitch*fb->height;
i->type = FB_TYPE_PACKED_PIXELS;
i->visual = FB_VISUAL_TRUECOLOR;
i->xpanstep = 0;
i->ypanstep = 0;
i->line_length = fb->pitch;
i->mmio_start = 0;
i->mmio_len = 0;
i->accel = 0;
i->capabilities = 0;
}
break;
case FBIOGET_VSCREENINFO:
{
fb_var_screeninfo* i = arg;
i->xres = fb->width;
i->yres = fb->height;
i->xres_virtual = fb->width;
i->yres_virtual = fb->height;
i->xoffset = 0;
i->yoffset = 0;
i->bits_per_pixel = fb->bpp;
i->grayscale = 0;
i->red.msb_right = 1;
i->green.msb_right = 1;
i->blue.msb_right = 1;
i->transp.msb_right = 1;
i->red.offset = fb->red_mask_shift;
i->red.length = fb->red_mask_size;
i->blue.offset = fb->blue_mask_shift;
i->blue.length = fb->blue_mask_size;
i->green.offset = fb->green_mask_shift;
i->green.length = fb->green_mask_size;
i->transp.offset = 28;
i->transp.length = 8;
i->nonstd = 0;
i->activate = 0;
i->height = 0;
i->width = 0;
i->accel_flags = 0;
i->pixclock = 0;
i->left_margin = 0;
i->upper_margin = 0;
i->lower_margin = 0;
i->right_margin = 0;
i->hsync_len = 0;
i->vsync_len = 0;
i->vmode = 0;
i->rotate = 0;
i->colorspace = 0;
}
break;
default:
return ENOTTY;
}
return 0;
}
static devcalls calls = {
read, write, isatty, isseekable
read, write, isatty, isseekable, ioctl
};
void fb_init(){