FUCKKKK

2026-08-09 22:20:01 +08:00
parent 8717ea8f20
commit 2a50fa58c7
185 changed files with 19890 additions and 710 deletions
@@ -0,0 +1,115 @@
+/* deshab/input.h - PS/2 键盘与鼠标输入
+ *
+ * 整合 desktop_app.h 的 da_scan_to_ascii / da_mouse / da_mouse_init /
+ * da_mouse_poll / da_ps2_drain，统一前缀为 dsb_。
+ *
+ * PS/2 鼠标初始化序列与 desktop/main.c:ps2_mouse_init 保持一致，
+ * 必须先冲刷输出缓冲再发命令，避免残留字节污染配置字
+ * （BUG-20260801-008）。
+ */
+#ifndef DESHAB_INPUT_H
+#define DESHAB_INPUT_H
+
+#include "types.h"
+#include "portio.h"
+#include "cursor.h"
+
+/* ---- 键盘 scan code set 1 -> ASCII ---- */
+static inline char dsb_scan_to_ascii(u8 sc, int shift) {
+    static const char normal[58] = {
+        0, 27, '1','2','3','4','5','6','7','8','9','0','-','=', 8, '\t',
+        'q','w','e','r','t','y','u','i','o','p','[',']','\n',0,
+        'a','s','d','f','g','h','j','k','l',';','\'', '`',0,'\\',
+        'z','x','c','v','b','n','m',',','.','/',0,'*',0,' '
+    };
+    static const char shifted[58] = {
+        0, 27, '!','@','#','$','%','^','&','*','(',')','_','+', 8, '\t',
+        'Q','W','E','R','T','Y','U','I','O','P','{','}','\n',0,
+        'A','S','D','F','G','H','J','K','L',':','"','~',0,'|',
+        'Z','X','C','V','B','N','M','<','>','?',0,'*',0,' '
+    };
+    if (sc >= 58) return 0;
+    return shift ? shifted[sc] : normal[sc];
+}
+
+/* ---- PS/2 鼠标 ---- */
+typedef struct dsb_mouse {
+    u8 buf[3];
+    int idx;
+    int has_pkt;
+} dsb_mouse;
+
+/* 冲刷 PS/2 控制器输出缓冲（最多 16 字节）。 */
+static inline void dsb_ps2_drain(void) {
+    for (int i = 0; i < 16; i++) {
+        if (!(dsb_inb(0x64) & 1)) break;
+        dsb_inb(0x60);
+    }
+}
+
+/* 初始化 PS/2 鼠标：启用 AUX 端口 + 流模式 + 数据报告。
+ * 序列与 desktop/main.c:ps2_mouse_init 一致。 */
+static inline void dsb_mouse_init(void) {
+    dsb_ps2_drain();
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x64, 0xA8);
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x64, 0x20);
+    for (int t = 0; t < 100000; t++) { if (dsb_inb(0x64) & 1) break; }
+    u8 cfg = dsb_inb(0x60);
+    cfg &= ~0x20; cfg |= 0x02; cfg |= 0x40; /* AUX 时钟启用 + AUX IRQ + 键盘翻译 */
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x64, 0x60);
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x60, cfg);
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x64, 0xD4);
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x60, 0xFF);
+    for (int i = 0; i < 8; i++) {           /* 读完复位全部响应(FA AA 00) */
+        int got = 0;
+        for (int t = 0; t < 100000; t++) { if (dsb_inb(0x64) & 1) { got = 1; break; } }
+        if (!got) break;
+        dsb_inb(0x60);
+    }
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x64, 0xD4);
+    for (int t = 0; t < 100000; t++) { if (!(dsb_inb(0x64) & 2)) break; }
+    dsb_outb(0x60, 0xF4);
+    for (int i = 0; i < 4; i++) {           /* 读完使能 ACK */
+        int got = 0;
+        for (int t = 0; t < 100000; t++) { if (dsb_inb(0x64) & 1) { got = 1; break; } }
+        if (!got) break;
+        dsb_inb(0x60);
+    }
+    dsb_ps2_drain();
+}
+
+/* 轮询鼠标：3 字节包解码，更新光标坐标与按键状态。
+ * 返回 1=收到完整包，0=无数据/未完成。
+ * 必须先查 AUX 位(bit5)再读数据端口，避免吞掉键盘扫描码
+ * （BUG-20260801-003）。 */
+static inline int dsb_mouse_poll(dsb_mouse *m, dsb_cursor *c, i64 fb_w, i64 fb_h) {
+    u8 st = dsb_inb(0x64);
+    if (!(st & 1)) return 0;
+    if (!(st & 0x20)) return 0;  /* 非 AUX 数据，留给键盘路径 */
+    u8 data = dsb_inb(0x60);
+    m->buf[m->idx++] = data;
+    if (m->idx < 3) return 0;
+    m->idx = 0;
+    if (!(m->buf[0] & 0x08)) return 0;  /* 同步位验证 */
+    int dx = (int)(signed char)m->buf[1];
+    int dy = (int)(signed char)m->buf[2];
+    dy = -dy;  /* PS/2 Y 向上为正，屏幕 Y 向下为正 */
+    c->mx += dx;
+    c->my += dy;
+    if (c->mx < 0) c->mx = 0;
+    if (c->my < 0) c->my = 0;
+    if (c->mx >= (int)fb_w - DSB_CURSOR_SIZE) c->mx = (int)fb_w - DSB_CURSOR_SIZE;
+    if (c->my >= (int)fb_h - DSB_CURSOR_SIZE) c->my = (int)fb_h - DSB_CURSOR_SIZE;
+    c->btn = (m->buf[0] & 0x01) ? 1 : 0;
+    m->has_pkt = 1;
+    return 1;
+}
+
+#endif /* DESHAB_INPUT_H */