f08ed2f2e9
221220000 张三 Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux 23:05:37 up 3 days, 18:11, 1 user, load average: 0.42, 0.54, 0.51
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
#include <am.h>
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#include <nemu.h>
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#define SYNC_ADDR (VGACTL_ADDR + 4)
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#define GET_W(var) uint16_t var = inw(VGACTL_ADDR + 2)
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#define GET_H(var) uint16_t var = inw(VGACTL_ADDR)
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void __am_gpu_init() {
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// int i;
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// GET_W(w);
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// GET_H(h);
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// // int w = inw(VGACTL_ADDR + 2); // TODO: get the correct width
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// // int h = inw(VGACTL_ADDR); // TODO: get the correct height
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// uint32_t *fb = (uint32_t *)(uintptr_t)FB_ADDR;
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// for (i = 0; i < w * h; i ++) fb[i] = i;
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// outl(SYNC_ADDR, 1);
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}
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void __am_gpu_config(AM_GPU_CONFIG_T *cfg) {
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// uint32_t vgactl = inl(VGACTL_ADDR);
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GET_W(w);
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// PNT_BITS(w, 16, 'W');
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GET_H(h);
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// PNT_BITS(h, 16, 'H');
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*cfg = (AM_GPU_CONFIG_T) {
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.present = true, .has_accel = false,
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.width = w, .height = h,
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.vmemsz = w*h*32
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};
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}
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void __am_gpu_fbdraw(AM_GPU_FBDRAW_T *ctl) {
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GET_W(w);
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uint32_t* fb_addr = (uint32_t*)FB_ADDR;
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for (int i = 0; i < ctl->h; i++) {
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for (int j = 0; j < ctl->w; j++) {
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outl((uintptr_t)(fb_addr +
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(w * (ctl->y + i) + ctl->x + j)),
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((uint32_t*)ctl->pixels)[ctl->w * i + j]);
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}
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}
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if (ctl->sync) {
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while (inl(SYNC_ADDR) != 0) ;
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outl(SYNC_ADDR, 1);
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}
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}
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void __am_gpu_status(AM_GPU_STATUS_T *status) {
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status->ready = inl(SYNC_ADDR) == 0 ? true : false;
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}
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