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Kernel + WindowServer: Re-define the interface to framebuffer devices

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We create a base class called GenericFramebufferDevice, which defines
all the virtual functions that must be implemented by a
FramebufferDevice. Then, we make the VirtIO FramebufferDevice and other
FramebufferDevice implementations inherit from it.
The most important consequence of rearranging the classes is that we now
have one IOCTL method, so all drivers should be committed to not
override the IOCTL method or make their own IOCTLs of FramebufferDevice.
All graphical IOCTLs are known to all FramebufferDevices, and it's up to
the specific implementation whether to support them or discard them (so
we require extensive usage of KResult and KResultOr, together with
virtual characteristic functions).
As a result, the interface is much cleaner and understandable to read.
This commit is contained in:
Liav A 2021-09-22 17:13:12 +03:00 • committed by Idan Horowitz
parent 78e724a899
commit 8554952690
19 changed files with 673 additions and 350 deletions
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55
Userland/Libraries/LibC/sys/ioctl_numbers.h
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@ -18,13 +18,38 @@ struct winsize {
unsigned short ws_ypixel;
};
struct FBResolution {
struct FBProperties {
bool multihead_support;
bool doublebuffer_support;
bool flushing_support;
bool partial_flushing_support;
};
struct FBHeadProperties {
int head_index;
unsigned pitch;
unsigned width;
unsigned height;
unsigned offset;
unsigned buffer_length;
};
struct FBHeadResolution {
int head_index;
int pitch;
int width;
int height;
};
struct FBHeadVerticalOffset {
int head_index;
int offseted;
};
struct FBRect {
int head_index;
unsigned x;
unsigned y;
unsigned width;
@ -57,13 +82,13 @@ enum IOCtlNumber {
TIOCSTI,
TIOCNOTTY,
TIOCSWINSZ,
FB_IOCTL_GET_SIZE_IN_BYTES,
FB_IOCTL_GET_RESOLUTION,
FB_IOCTL_SET_RESOLUTION,
FB_IOCTL_GET_BUFFER,
FB_IOCTL_GET_BUFFER_OFFSET,
FB_IOCTL_SET_BUFFER,
FB_IOCTL_FLUSH_BUFFERS,
FB_IOCTL_GET_PROPERTIES,
FB_IOCTL_GET_HEAD_PROPERTIES,
FB_IOCTL_SET_HEAD_RESOLUTION,
FB_IOCTL_SET_HEAD_VERTICAL_OFFSET_BUFFER,
FB_IOCTL_GET_HEAD_VERTICAL_OFFSET_BUFFER,
FB_IOCTL_FLUSH_HEAD_BUFFERS,
FB_IOCTL_FLUSH_HEAD,
KEYBOARD_IOCTL_GET_NUM_LOCK,
KEYBOARD_IOCTL_SET_NUM_LOCK,
KEYBOARD_IOCTL_GET_CAPS_LOCK,
@ -105,13 +130,13 @@ enum IOCtlNumber {
#define TIOCSTI TIOCSTI
#define TIOCNOTTY TIOCNOTTY
#define TIOCSWINSZ TIOCSWINSZ
#define FB_IOCTL_GET_SIZE_IN_BYTES FB_IOCTL_GET_SIZE_IN_BYTES
#define FB_IOCTL_GET_RESOLUTION FB_IOCTL_GET_RESOLUTION
#define FB_IOCTL_SET_RESOLUTION FB_IOCTL_SET_RESOLUTION
#define FB_IOCTL_GET_BUFFER FB_IOCTL_GET_BUFFER
#define FB_IOCTL_GET_BUFFER_OFFSET FB_IOCTL_GET_BUFFER_OFFSET
#define FB_IOCTL_SET_BUFFER FB_IOCTL_SET_BUFFER
#define FB_IOCTL_FLUSH_BUFFERS FB_IOCTL_FLUSH_BUFFERS
#define FB_IOCTL_GET_PROPERTIES FB_IOCTL_GET_PROPERTIES
#define FB_IOCTL_GET_HEAD_PROPERTIES FB_IOCTL_GET_HEAD_PROPERTIES
#define FB_IOCTL_SET_HEAD_RESOLUTION FB_IOCTL_SET_HEAD_RESOLUTION
#define FB_IOCTL_SET_HEAD_VERITCAL_OFFSET_BUFFER FB_IOCTL_SET_HEAD_VERTICAL_OFFSET_BUFFER
#define FB_IOCTL_GET_HEAD_VERITCAL_OFFSET_BUFFER FB_IOCTL_GET_HEAD_VERTICAL_OFFSET_BUFFER
#define FB_IOCTL_FLUSH_HEAD_BUFFERS FB_IOCTL_FLUSH_HEAD_BUFFERS
#define FB_IOCTL_FLUSH_HEAD FB_IOCTL_FLUSH_HEAD
#define KEYBOARD_IOCTL_GET_NUM_LOCK KEYBOARD_IOCTL_GET_NUM_LOCK
#define KEYBOARD_IOCTL_SET_NUM_LOCK KEYBOARD_IOCTL_SET_NUM_LOCK
#define KEYBOARD_IOCTL_GET_CAPS_LOCK KEYBOARD_IOCTL_GET_CAPS_LOCK