[a06aa8b] | 1 | /*
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| 2 | * Copyright (C) 2017 The Contributors
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| 3 | *
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| 4 | * This program is free software: you can redistribute it and/or modify
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| 5 | * it under the terms of the GNU General Public License as published by
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| 6 | * the Free Software Foundation, either version 3 of the License, or (at
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| 7 | * your option) any later version.
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| 8 | *
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| 9 | * This program is distributed in the hope that it will be useful, but
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| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 12 | * General Public License for more details.
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| 13 | *
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| 14 | * A copy of the GNU General Public License can be found in the file
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[2147e53] | 15 | * "gpl.txt" in the top directory of this repository.
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[a06aa8b] | 16 | */
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| 17 |
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| 18 | #include <all.h>
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| 19 |
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[4c71d39] | 20 | #define ver(...) _ver(kbd_verbose, 0, __VA_ARGS__)
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| 21 | #define ver2(...) _ver(kbd_verbose, 1, __VA_ARGS__)
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| 22 | #define ver3(...) _ver(kbd_verbose, 2, __VA_ARGS__)
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[a06aa8b] | 23 |
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[4c71d39] | 24 | int32_t kbd_verbose = 0;
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[a06aa8b] | 25 |
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[4ed9bfe] | 26 | #define BUF_SZ 16
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| 27 |
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| 28 | static int32_t buf_hd = 0;
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| 29 | static int32_t buf_tl = 0;
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| 30 | static uint8_t buf[BUF_SZ];
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| 31 |
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| 32 | static uint8_t reg = 0;
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| 33 | static bool irq = false;
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| 34 |
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| 35 | static void xmit(void)
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| 36 | {
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| 37 | ver2("kbd xmit %d %d", buf_tl, buf_hd);
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| 38 |
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| 39 | if (buf_tl >= buf_hd) {
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| 40 | return;
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| 41 | }
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| 42 |
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| 43 | reg = buf[buf_tl % BUF_SZ];
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| 44 | irq = true;
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| 45 | ver2("kbd xmit 0x%02x", reg);
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| 46 |
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| 47 | ++buf_tl;
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| 48 |
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| 49 | if (buf_tl >= BUF_SZ) {
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| 50 | buf_hd -= BUF_SZ;
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| 51 | buf_tl -= BUF_SZ;
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| 52 | ver2("kbd adj %d %d", buf_tl, buf_hd);
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| 53 | }
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| 54 | }
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| 55 |
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| 56 | static void out(uint8_t c)
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| 57 | {
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| 58 | ver2("kbd out %d %d 0x%02x", buf_tl, buf_hd, c);
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| 59 |
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| 60 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 61 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 62 | }
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| 63 |
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| 64 | if (buf_hd >= buf_tl + BUF_SZ) {
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| 65 | err("keyboard port losing data");
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| 66 | }
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| 67 | else {
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| 68 | buf[buf_hd % BUF_SZ] = c;
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| 69 | ++buf_hd;
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| 70 |
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| 71 | if (!irq) {
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| 72 | xmit();
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| 73 | }
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| 74 | }
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| 75 |
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| 76 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 77 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 78 | }
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| 79 | }
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| 80 |
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| 81 | static void but_on(int32_t sig)
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| 82 | {
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| 83 | out((uint8_t)(0x80 | sig));
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| 84 | out(0x01);
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| 85 | }
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| 86 |
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| 87 | static void but_off(int32_t sig)
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| 88 | {
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| 89 | out((uint8_t)(0x80 | sig));
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| 90 | out(0x00);
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| 91 | }
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| 92 |
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| 93 | static void key_touch(int32_t sig, int32_t val)
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| 94 | {
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| 95 | out((uint8_t)(0x80 | sig));
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| 96 | out(0x01);
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| 97 | out((uint8_t)val);
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| 98 | }
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| 99 |
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| 100 | static void key_off(int32_t sig)
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| 101 | {
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| 102 | out((uint8_t)(0x80 | sig));
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| 103 | out(0x00);
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| 104 | }
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| 105 |
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[18cbd53] | 106 | static void slid(int32_t sig, bool on, int32_t val)
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[4ed9bfe] | 107 | {
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| 108 | out((uint8_t)(0x80 | sig));
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[18cbd53] | 109 | out(on ? 0x01 : 0x00);
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[4ed9bfe] | 110 | out((uint8_t)val);
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| 111 | }
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| 112 |
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[18cbd53] | 113 | #if defined NOT_YET
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| 114 | static void pot(int32_t sig, int32_t val)
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[4ed9bfe] | 115 | {
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| 116 | out((uint8_t)(0x80 | sig));
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[18cbd53] | 117 | out((uint8_t)val);
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[4ed9bfe] | 118 | }
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| 119 | #endif
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| 120 |
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[81d7cdc] | 121 | static void vid_key(SDL_KeyboardEvent *ev, bool dn)
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[4ed9bfe] | 122 | {
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[d021bbb] | 123 | if ((ev->keysym.mod & KMOD_SHIFT) != 0 &&
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| 124 | ev->keysym.sym >= SDLK_a && ev->keysym.sym <= SDLK_x) {
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| 125 | int32_t i = ev->keysym.sym - SDLK_a;
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[ca77925] | 126 | ver2("kbd key %d %s", i, dn ? "dn" : "up");
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[d021bbb] | 127 |
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[ca77925] | 128 | if (dn) {
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[d021bbb] | 129 | key_touch(1 + i, 0x7f);
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| 130 | }
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| 131 | else {
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| 132 | key_off(1 + i);
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| 133 | }
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| 134 |
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[ca77925] | 135 | return;
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[d021bbb] | 136 | }
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[4ed9bfe] | 137 |
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[ca77925] | 138 | int32_t sig;
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[4ed9bfe] | 139 |
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[ca77925] | 140 | if (ev->keysym.sym >= SDLK_0 && ev->keysym.sym <= '9') {
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| 141 | int32_t i = ev->keysym.sym - SDLK_0;
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| 142 | ver2("kbd dat %d %s", i, dn ? "dn" : "up");
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| 143 | sig = 60 + i;
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| 144 | }
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| 145 | else {
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| 146 | switch (ev->keysym.sym) {
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| 147 | case SDLK_x:
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| 148 | ver2("kbd x %s", dn ? "dn" : "up");
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| 149 | sig = 70;
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[4ed9bfe] | 150 | break;
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| 151 |
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[ca77925] | 152 | case SDLK_e:
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| 153 | ver2("kbd e %s", dn ? "dn" : "up");
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| 154 | sig = 71;
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[4ed9bfe] | 155 | break;
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| 156 |
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[ca77925] | 157 | case SDLK_m:
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| 158 | ver2("kbd m %s", dn ? "dn" : "up");
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| 159 | sig = 72;
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[4ed9bfe] | 160 | break;
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[ca77925] | 161 |
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| 162 | default:
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| 163 | return;
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[4ed9bfe] | 164 | }
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| 165 | }
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[ca77925] | 166 |
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| 167 | if (dn) {
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| 168 | but_on(sig);
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| 169 | }
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| 170 | else {
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| 171 | but_off(sig);
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| 172 | }
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[4ed9bfe] | 173 | }
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| 174 |
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[81d7cdc] | 175 | static void lcd_key(SDL_KeyboardEvent *ev, bool dn)
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| 176 | {
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| 177 | if ((ev->keysym.mod & KMOD_CTRL) != 0 &&
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| 178 | ev->keysym.sym >= SDLK_a && ev->keysym.sym <= SDLK_n) {
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| 179 | int32_t i = ev->keysym.sym - SDLK_a;
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| 180 | ver2("kbd lcd %d %s", i, dn ? "dn" : "up");
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| 181 |
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| 182 | if (dn) {
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| 183 | but_on(39 + i);
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| 184 | }
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| 185 | else {
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| 186 | but_off(39 + i);
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| 187 | }
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[18cbd53] | 188 |
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| 189 | return;
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| 190 | }
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| 191 |
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| 192 | if (ev->keysym.sym >= SDLK_a && ev->keysym.sym <= SDLK_n) {
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| 193 | static int32_t lev[14] = {
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| 194 | 64, 0, 0, 0, 0, 64, 64, 64, 64, 0, 0, 0, 64, 0
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| 195 | };
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| 196 |
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| 197 | int32_t i = ev->keysym.sym - SDLK_a;
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| 198 | int32_t val = lev[i];
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| 199 |
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| 200 | if (!dn) {
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| 201 | if ((ev->keysym.mod & KMOD_SHIFT) != 0) {
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| 202 | val = val > 10 ? val - 10 : 0;
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| 203 | }
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| 204 | else {
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| 205 | val = val < 117 ? val + 10 : 127;
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| 206 | }
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| 207 | }
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| 208 |
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| 209 | ver2("kbd sli %d %s %d", i, dn ? "dn" : "up", val);
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| 210 | slid(25 + i, dn, val);
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| 211 |
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| 212 | lev[i] = val;
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| 213 | return;
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[81d7cdc] | 214 | }
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| 215 | }
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| 216 |
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| 217 | void kbd_key(SDL_KeyboardEvent *ev, bool vid, bool dn)
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| 218 | {
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| 219 | if (vid) {
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| 220 | vid_key(ev, dn);
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| 221 | }
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| 222 | else {
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| 223 | lcd_key(ev, dn);
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| 224 | }
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| 225 | }
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| 226 |
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[a06aa8b] | 227 | void kbd_init(void)
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| 228 | {
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| 229 | ver("kbd init");
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| 230 | }
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| 231 |
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| 232 | void kbd_quit(void)
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| 233 | {
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| 234 | ver("kbd quit");
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| 235 | }
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| 236 |
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[3c30832] | 237 | bool kbd_exec(void)
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[a06aa8b] | 238 | {
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[4c71d39] | 239 | ver3("kbd exec");
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[4ed9bfe] | 240 | return irq;
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[a06aa8b] | 241 | }
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| 242 |
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| 243 | uint32_t kbd_read(uint32_t off, int32_t sz)
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| 244 | {
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[4c71d39] | 245 | ver2("kbd rd %u:%d", off, sz * 8);
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[4ed9bfe] | 246 |
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| 247 | if (sz != 1 || off > 0) {
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| 248 | fail("invalid kbd rd %u:%d", off, sz * 8);
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| 249 | }
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| 250 |
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| 251 | irq = false;
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| 252 | uint32_t res = reg;
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| 253 |
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| 254 | xmit();
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| 255 |
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| 256 | return res;
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[a06aa8b] | 257 | }
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| 258 |
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| 259 | void kbd_write(uint32_t off, int32_t sz, uint32_t val)
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| 260 | {
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[4c71d39] | 261 | ver2("kbd wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
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[4ed9bfe] | 262 | fail("invalid kbd wr %u:%d", off, sz * 8);
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[a06aa8b] | 263 | }
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