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Diffstat (limited to 'src/user/app/init/driver/ps2.c')
-rw-r--r--src/user/app/init/driver/ps2.c129
1 files changed, 0 insertions, 129 deletions
diff --git a/src/user/app/init/driver/ps2.c b/src/user/app/init/driver/ps2.c
deleted file mode 100644
index 5470249..0000000
--- a/src/user/app/init/driver/ps2.c
+++ /dev/null
@@ -1,129 +0,0 @@
-#include "driver.h"
-#include <assert.h>
-#include <camellia/compat.h>
-#include <camellia/syscalls.h>
-#include <errno.h>
-#include <shared/ring.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <thread.h>
-
-
-static const char keymap_lower[] = {
- '\0', '\0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b', '\t',
- 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\r', '\0', 'a', 's',
- 'd', 'f', 'g', 'h', 'j', 'k', 'l', '\0', '\'', '`', '\0', '\\', 'z', 'x', 'c', 'v',
- 'b', 'n', 'm', ',', '.', '/', '\0', '*', '\0', ' ', '\0', '\0', '\0', '\0', '\0', '\0',
- '\0', '\0', '\0', '\0', '\0', '\0', '\0', '7', '8', '9', '-', '4', '5', '6', '+', '1',
- '2', '3', '0', '.', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0',
- '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0',
- '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0',
-};
-
-static const char keymap_upper[] = {
- '\0', '\0', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', '\b', '\t',
- 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\r', '\0', 'A', 'S',
- 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~', '\0', '|', 'Z', 'X', 'C', 'V',
- 'B', 'N', 'M', '<', '>', '?', '\0', '*', '\0', ' ', '\0', '\0', '\0', '\0', '\0', '\0',
- '\0', '\0', '\0', '\0', '\0', '\0', '\0', '7', '8', '9', '-', '4', '5', '6', '+', '1',
- '2', '3', '0', '.', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0',
- '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0',
- '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0',
-};
-
-
-static volatile uint8_t backlog_buf[16];
-static volatile ring_t backlog = {(void*)backlog_buf, sizeof backlog_buf, 0, 0};
-
-static hid_t fd;
-
-static bool keys[0x80] = {0};
-
-static void parse_scancode(uint8_t s) {
- bool ctrl = keys[0x1D];
- bool shift = keys[0x2A] || keys[0x36];
- bool down = !(s & 0x80);
- char c;
- s &= 0x7f;
- keys[s] = down;
-
- c = shift ? keymap_upper[s] : keymap_lower[s];
- if (ctrl && keymap_upper[s] >= 'A' && keymap_upper[s] <= 'Z')
- c = keymap_upper[s] - 'A' + 1;
- if (down && c) ring_put1b((void*)&backlog, c);
-}
-
-
-/** Is a thread waiting for /kdev/ps2/kb? */
-static volatile bool blocked = false;
-/* for use in read_thread */
-static hid_t rt_reqh;
-static size_t rt_cap;
-
-static void read_thread(void *unused) {
- char buf[512];
- (void)unused;
-
- assert(blocked);
- while (ring_used((void*)&backlog) == 0) {
- /* read raw input until we have something to output */
- int len = _sys_read(fd, buf, sizeof buf, 0);
- if (len == 0) break;
- for (int i = 0; i < len; i++)
- parse_scancode(buf[i]);
- }
- if (ring_used((void*)&backlog) > 0) {
- int ret = ring_get((void*)&backlog, buf, rt_cap);
- _sys_fs_respond(rt_reqh, buf, ret, 0);
- } else {
- _sys_fs_respond(rt_reqh, 0, -EGENERIC, 0);
- }
- blocked = false;
-}
-
-static void fs_loop(void) {
- static char buf[512];
- int ret;
- for (;;) {
- struct ufs_request res;
- hid_t reqh = _sys_fs_wait(buf, sizeof buf, &res);
- if (reqh < 0) return;
-
- switch (res.op) {
- case VFSOP_OPEN:
- if (res.len == 0) {
- _sys_fs_respond(reqh, NULL, 1, 0);
- } else {
- _sys_fs_respond(reqh, NULL, -ENOENT, 0);
- }
- break;
-
- case VFSOP_READ:
- if (blocked) {
- _sys_fs_respond(reqh, NULL, -EAGAIN, 0);
- break;
- } else if (ring_used((void*)&backlog) > 0) {
- ret = ring_get((void*)&backlog, buf, res.capacity);
- _sys_fs_respond(reqh, buf, ret, 0);
- } else {
- blocked = true;
- rt_reqh = reqh;
- rt_cap = res.capacity;
- thread_create(0, read_thread, 0);
- }
- break;
-
- default:
- _sys_fs_respond(reqh, NULL, -1, 0);
- break;
- }
- }
-}
-
-void ps2_drv(void) {
- fd = _sys_open("/kdev/ps2/kb", 12, 0);
- if (fd < 0) exit(1);
-
- fs_loop();
- exit(0);
-}