finally got the usbhid→ps2 scancode translation right.

Reference: /n/sources/patch/usbkb-map
Date: Fri Apr  4 11:23:19 CES 2014
Signed-off-by: yarikos@gmail.com

--- /sys/src/cmd/usb/kb/kb.c	Fri Apr  4 11:22:57 2014
+++ /sys/src/cmd/usb/kb/kb.c	Fri Apr  4 11:22:47 2014
@@ -65,44 +65,60 @@
  * besides wheel and regular up/down report the 4th byte as 1/-1
  */
 
-/*
- * key code to scan code; for the page table used by
- * the logitech bluetooth keyboard.
- */
+/* USB HID to PS/2 Scan Code Translation Table - http://goo.gl/7ktj5l */
 static char sctab[256] =
 {
-[0x00]	0x0,	0x0,	0x0,	0x0,	0x1e,	0x30,	0x2e,	0x20,
-[0x08]	0x12,	0x21,	0x22,	0x23,	0x17,	0x24,	0x25,	0x26,
-[0x10]	0x32,	0x31,	0x18,	0x19,	0x10,	0x13,	0x1f,	0x14,
-[0x18]	0x16,	0x2f,	0x11,	0x2d,	0x15,	0x2c,	0x2,	0x3,
-[0x20]	0x4,	0x5,	0x6,	0x7,	0x8,	0x9,	0xa,	0xb,
-[0x28]	0x1c,	0x1,	0xe,	0xf,	0x39,	0xc,	0xd,	0x1a,
-[0x30]	0x1b,	0x2b,	0x2b,	0x27,	0x28,	0x29,	0x33,	0x34,
-[0x38]	0x35,	0x3a,	0x3b,	0x3c,	0x3d,	0x3e,	0x3f,	0x40,
-[0x40]	0x41,	0x42,	0x43,	0x44,	0x57,	0x58,	0x63,	0x46,
-[0x48]	0x77,	0x52,	0x47,	0x49,	0x53,	0x4f,	0x51,	0x4d,
-[0x50]	0x4b,	0x50,	0x48,	0x45,	0x35,	0x37,	0x4a,	0x4e,
-[0x58]	0x1c,	0x4f,	0x50,	0x51,	0x4b,	0x4c,	0x4d,	0x47,
-[0x60]	0x48,	0x49,	0x52,	0x53,	0x56,	0x7f,	0x74,	0x75,
-[0x68]	0x55,	0x59,	0x5a,	0x5b,	0x5c,	0x5d,	0x5e,	0x5f,
-[0x70]	0x78,	0x79,	0x7a,	0x7b,	0x0,	0x0,	0x0,	0x0,
-[0x78]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x71,
-[0x80]	0x73,	0x72,	0x0,	0x0,	0x0,	0x7c,	0x0,	0x0,
-[0x88]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0x90]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0x98]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xa0]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xa8]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xb0]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xb8]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xc0]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xc8]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xd0]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xd8]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xe0]	0x1d,	0x2a,	0x38,	0x7d,	0x61,	0x36,	0x64,	0x7e,
-[0xe8]	0x0,	0x0,	0x0,	0x0,	0x0,	0x73,	0x72,	0x71,
-[0xf0]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
-[0xf8]	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,	0x0,
+[0x00]	0x00, 0x00, 0x00, 0x00, 0x1e, 0x30, 0x2e, 0x20,
+[0x08]	0x12, 0x21, 0x22, 0x23, 0x17, 0x24, 0x25, 0x26,
+[0x10]	0x32, 0x31, 0x18, 0x19, 0x10, 0x13, 0x1f, 0x14,
+[0x18]	0x16, 0x2f, 0x11, 0x2d, 0x15, 0x2c, 0x02, 0x03,
+[0x20]	0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
+[0x28]	0x1c, 0x01, 0x0e, 0x0f, 0x39, 0x0c, 0x0d, 0x1a,
+[0x30]	0x1b, 0x2b, 0x2b, 0x27, 0x28, 0x29, 0x33, 0x34,
+[0x38]	0x35, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40,
+[0x40]	0x41, 0x42, 0x43, 0x44, 0x57, 0x58, 0x37, 0x46,
+[0x48]	0x46, 0x52, 0x47, 0x49, 0x53, 0x4f, 0x51, 0x4d,
+[0x50]	0x4b, 0x50, 0x48, 0x45, 0x35, 0x37, 0x4a, 0x4e,
+[0x58]	0x1c, 0x4f, 0x50, 0x51, 0x4b, 0x4c, 0x4d, 0x47,
+[0x60]	0x48, 0x49, 0x52, 0x53, 0x56, 0x5d, 0x5e, 0x59,
+[0x68]	0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b,
+[0x70]	0x6c, 0x6d, 0x6e, 0x76, 0x00, 0x00, 0x00, 0x00,
+[0x78]	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+[0x80]	0x00, 0x00, 0x00, 0x00, 0x00, 0x7e,  0x00, 0x73,
+[0x88]	0x70, 0x7d, 0x79, 0x7b, 0x5c, 0x00, 0x00, 0x00,
+[0x90]	0xf2, 0xf1, 0x78, 0x77, 0x76, 0x00, 0x00, 0x00,
+[0x98]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xa0]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xa8]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xb0]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xb8]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xc0]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xc8]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xd0]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xd8]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xe0]	0x1d, 0x2a, 0x38, 0x5b, 0x1d, 0x36, 0x38, 0x5c,
+[0xe8]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xf0]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+[0xf8]	0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+};
+
+static char esctab[256] =
+{
+[0x00]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0x10]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0x20]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0x30]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0x40]	0, 0, 0, 0,	0, 0, 1, 0,	1, 1, 1, 1,	1, 1, 1, 1,
+[0x50]	1, 1, 1, 0,	1, 0, 0, 0,	1, 0, 0, 0,	0, 0, 0, 0,
+[0x60]	0, 0, 0, 0,	0, 1, 1, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0x70]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0x80]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0xa0]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0xb0]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0xc0]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0xd0]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
+[0xe0]	0, 0, 0, 1,	1, 0, 1, 1,	0, 0, 0, 0,	0, 0, 0, 0,
+[0xf0]	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0,
 };
 
 static QLock inlck;
@@ -472,9 +488,6 @@
 
 }
 
-
-#define hasesc1(sc)	((sc) >= 0x47 || (sc) == 0x38)
-
 static void
 putmod(KDev *f, uchar mods, uchar omods, uchar mask, uchar esc, uchar sc)
 {
@@ -497,7 +510,7 @@
 putkeys(KDev *f, uchar buf[], uchar obuf[], int n, uchar dk)
 {
 	int i, j;
-	uchar uk;
+	uchar uk, esc;
 
 	putmod(f, buf[0], obuf[0], Mctrl, 0, SCctrl);
 	putmod(f, buf[0], obuf[0], (1<<Mlshift), 0, SClshift);
@@ -512,8 +525,9 @@
 			 	break;
 		if(j == n && buf[i] != 0){
 			dk = sctab[buf[i]];
-			putscan(f, hasesc1(dk), dk);
-			startrepeat(f, hasesc1(dk), dk);
+			esc = esctab[buf[i]];
+			putscan(f, esc, dk);
+			startrepeat(f, esc, dk);
 		}
 	}
 
@@ -525,7 +539,8 @@
 				break;
 		if(j == n && obuf[i] != 0){
 			uk = sctab[obuf[i]];
-			putscan(f, hasesc1(uk), uk|Keyup);
+			esc = esctab[obuf[i]];
+			putscan(f, esc, uk|Keyup);
 		}
 	}
 	if(uk && (dk == 0 || dk == uk)){