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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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16
WindowServer/main.cpp
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@ -16,7 +16,21 @@ void WindowServer_main()
dbgprintf("Screen is %ux%ux%ubpp\n", info.width, info.height, info.bpp);
WSScreen screen((dword*)info.framebuffer, info.width, info.height);
int bxvga_fd = current->sys$open("/dev/bxvga", O_RDWR);
ASSERT(bxvga_fd >= 0);
Syscall::SC_mmap_params params;
memset(&params, 0, sizeof(params));
params.fd = bxvga_fd;
params.prot = PROT_READ | PROT_WRITE;
params.flags = MAP_SHARED;
params.size = info.width * info.height * sizeof(RGBA32) * 2;
params.offset = 0;
kprintf("Calling sys$mmap in WS\n");
void* framebuffer = current->sys$mmap(&params);
ASSERT(framebuffer && framebuffer != (void*)-1);
WSScreen screen((dword*)framebuffer, info.width, info.height);
WSWindowManager::the();