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Kernel: Make BochsVGADevice a BlockDevice and support mmapping it.

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Currently you can only mmap the entire framebuffer.
Using this when starting up the WindowServer gets us yet another step
closer towards it moving into userspace. :^)
This commit is contained in:
Andreas Kling 2019-02-16 09:57:42 +01:00
parent 2dc7c5a7b0
commit 799177feda
15 changed files with 155 additions and 26 deletions
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6
Kernel/Process.h
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@ -44,7 +44,6 @@ struct DisplayInfo {
unsigned height;
unsigned bpp;
unsigned pitch;
byte* framebuffer;
};
class Process : public InlineLinkedListNode<Process>, public Weakable<Process> {
@ -295,6 +294,9 @@ public:
int gui_client_id() const { return (int)this; }
Region* allocate_region_with_vmo(LinearAddress, size_t, RetainPtr<VMObject>&&, size_t offset_in_vmo, String&& name, bool is_readable, bool is_writable);
Region* allocate_file_backed_region(LinearAddress, size_t, RetainPtr<Inode>&&, String&& name, bool is_readable, bool is_writable);
private:
friend class MemoryManager;
friend class Scheduler;
@ -366,8 +368,6 @@ private:
TTY* m_tty { nullptr };
Region* allocate_region(LinearAddress, size_t, String&& name, bool is_readable = true, bool is_writable = true, bool commit = true);
Region* allocate_file_backed_region(LinearAddress, size_t, RetainPtr<Inode>&&, String&& name, bool is_readable, bool is_writable);
Region* allocate_region_with_vmo(LinearAddress, size_t, RetainPtr<VMObject>&&, size_t offset_in_vmo, String&& name, bool is_readable, bool is_writable);
bool deallocate_region(Region& region);
Region* region_from_range(LinearAddress, size_t);