#include <lunaix/clock.h>
#include <lunaix/common.h>
#include <lunaix/input.h>
+#include <lunaix/isrm.h>
#include <lunaix/peripheral/ps2kbd.h>
#include <lunaix/syslog.h>
#include <lunaix/timer.h>
-#include <arch/x86/interrupts.h>
+#include <arch/i386/interrupts.h>
#include <hal/cpu.h>
#include <klibc/string.h>
#define PS2_DEV_CMD_MAX_ATTEMPTS 5
-LOG_MODULE("PS2KBD");
+LOG_MODULE("i8042");
static struct ps2_cmd_queue cmd_q;
static struct ps2_kbd_state kbd_state;
void
intr_ps2_kbd_handler(const isr_param* param);
+static u8_t
+ps2_issue_cmd_wretry(char cmd, u16_t arg);
+
void
ps2_device_post_cmd(char cmd, char arg)
{
* https://bochs.sourceforge.io/cgi-bin/lxr/source/bios/rombios32.c#L1314
*/
if (!(acpi_ctx->fadt.boot_arch & IAPC_ARCH_8042)) {
- kprintf(KERROR "i8042: not found\n");
+ kprintf(KERROR "not found\n");
// FUTURE: Some alternative fallback on this? Check PCI bus for USB
// controller instead?
return;
}
} else {
- kprintf(KWARN "i8042: outdated FADT used, assuming exists.\n");
+ kprintf(KWARN "outdated FADT used, assuming exists.\n");
}
char result;
// 3、屏蔽所有PS/2设备（端口1&2）IRQ，并且禁用键盘键码转换功能
result = ps2_issue_cmd(PS2_CMD_READ_CFG, PS2_NO_ARG);
- result = result & ~(PS2_CFG_P1INT | PS2_CFG_P2INT | PS2_CFG_TRANSLATION);
+ result = result & ~(PS2_CFG_P1INT | PS2_CFG_P2INT);
ps2_post_cmd(PS2_PORT_CTRL_CMDREG, PS2_CMD_WRITE_CFG, result);
// 4、控制器自检
- result = ps2_issue_cmd(PS2_CMD_SELFTEST, PS2_NO_ARG);
+ result = ps2_issue_cmd_wretry(PS2_CMD_SELFTEST, PS2_NO_ARG);
if (result != PS2_RESULT_TEST_OK) {
- kprintf(KERROR "Controller self-test failed.");
- goto done;
+ kprintf(KWARN "controller self-test failed. (%x)\n", result);
+ // goto done;
}
// 5、设备自检（端口1自检，通常是我们的键盘）
- result = ps2_issue_cmd(PS2_CMD_SELFTEST_PORT1, PS2_NO_ARG);
+ result = ps2_issue_cmd_wretry(PS2_CMD_SELFTEST_PORT1, PS2_NO_ARG);
if (result != 0) {
- kprintf(KERROR "Interface test on port 1 failed.");
- goto done;
+ kprintf(KERROR "interface test on port 1 failed. (%x)\n", result);
+ // goto done;
}
+ ps2_post_cmd(PS2_PORT_CTRL_CMDREG, PS2_CMD_PORT2_DISABLE, PS2_NO_ARG);
+
// 6、开启位于端口1的 IRQ，并启用端口1。不用理会端口2，那儿一般是鼠标。
ps2_post_cmd(PS2_PORT_CTRL_CMDREG, PS2_CMD_PORT1_ENABLE, PS2_NO_ARG);
result = ps2_issue_cmd(PS2_CMD_READ_CFG, PS2_NO_ARG);
- result = result | PS2_CFG_P1INT;
+ // 重新设置配置字节，因为控制器自检有可能重置我们先前做的改动。
+ result = (result | PS2_CFG_P1INT) & ~(PS2_CFG_TRANSLATION | PS2_CFG_P2INT);
ps2_post_cmd(PS2_PORT_CTRL_CMDREG, PS2_CMD_WRITE_CFG, result);
// 至此，PS/2控制器和设备已完成初始化，可以正常使用。
- // 将我们的键盘驱动挂载到第204号中断上（已由IOAPIC映射至IRQ#1），
- intr_subscribe(PC_KBD_IV, intr_ps2_kbd_handler);
-
// 搞一个计时器，将我们的 ps2_process_cmd
// 挂上去。每隔5毫秒执行排在队头的命令。
// 为什么只执行队头的命令，而不是全部的命令？
*
* 所以，保险的方法是：在初始化后才去设置ioapic，这样一来我们就能有一个稳定的IRQ#1以放心使用。
*/
- uint8_t irq_kbd = ioapic_get_irq(acpi_ctx, PC_AT_IRQ_KBD);
- ioapic_redirect(irq_kbd, PC_KBD_IV, 0, IOAPIC_DELMOD_FIXED);
+ isrm_bindirq(PC_AT_IRQ_KBD, intr_ps2_kbd_handler);
-done:
cpu_enable_interrupt();
}
// 处理队列排头的指令
struct ps2_cmd* pending_cmd = &cmd_q.cmd_queue[cmd_q.queue_ptr];
- char result;
+ u8_t result;
int attempts = 0;
// 尝试将命令发送至PS/2键盘（通过PS/2控制器）
#endif
attempts++;
} while (result == PS2_RESULT_NAK && attempts < PS2_DEV_CMD_MAX_ATTEMPTS);
-
// XXX: 是否需要处理不成功的指令？
cmd_q.queue_ptr = (cmd_q.queue_ptr + 1) % PS2_CMD_QUEUE_SIZE;
}
void
-kbd_buffer_key_event(kbd_keycode_t key, uint8_t scancode, kbd_kstate_t state)
+kbd_buffer_key_event(kbd_keycode_t key, u8_t scancode, kbd_kstate_t state)
{
/*
forgive me on these ugly bit-level tricks,
{
// This is important! Don't believe me? try comment it out and run on Bochs!
- while (!(io_inb(PS2_PORT_CTRL_STATUS) & PS2_STATUS_OFULL))
- ;
+ // while (!(io_inb(PS2_PORT_CTRL_STATUS) & PS2_STATUS_OFULL))
+ // ;
// I know you are tempting to move this chunk after the keyboard state
// check. But DO NOT. This chunk is in right place and right order. Moving
// it at your own risk This is to ensure we've cleared the output buffer
// everytime, so it won't pile up across irqs.
- uint8_t scancode = io_inb(PS2_PORT_ENC_DATA);
+ u8_t scancode = io_inb(PS2_PORT_ENC_DATA);
kbd_keycode_t key;
/*
}
}
-static uint8_t
-ps2_issue_cmd(char cmd, uint16_t arg)
+static u8_t
+ps2_issue_cmd(char cmd, u16_t arg)
{
ps2_post_cmd(PS2_PORT_CTRL_CMDREG, cmd, arg);
return io_inb(PS2_PORT_ENC_CMDREG);
}
+static u8_t
+ps2_issue_cmd_wretry(char cmd, u16_t arg)
+{
+ u8_t r, c = 0;
+ while ((r = ps2_issue_cmd(cmd, arg)) == PS2_RESULT_NAK && c < 5) {
+ c++;
+ }
+ if (c >= 5) {
+ kprintf(KWARN "max attempt reached.\n");
+ }
+ return r;
+}
+
static void
-ps2_post_cmd(uint8_t port, char cmd, uint16_t arg)
+ps2_post_cmd(u8_t port, char cmd, u16_t arg)
{
// 等待PS/2输入缓冲区清空，这样我们才可以写入命令
while (io_inb(PS2_PORT_CTRL_STATUS) & PS2_STATUS_IFULL)
if (!(arg & PS2_NO_ARG)) {
// 所有参数一律通过0x60传入。
- io_outb(PS2_PORT_ENC_CMDREG, (uint8_t)(arg & 0x00ff));
+ while (io_inb(PS2_PORT_CTRL_STATUS) & PS2_STATUS_IFULL)
+ ;
+ io_outb(PS2_PORT_ENC_CMDREG, (u8_t)(arg & 0x00ff));
io_delay(PS2_DELAY);
}
}
-static uint8_t
-ps2_issue_dev_cmd(char cmd, uint16_t arg)
+static u8_t
+ps2_issue_dev_cmd(char cmd, u16_t arg)
{
ps2_post_cmd(PS2_PORT_ENC_CMDREG, cmd, arg);
git://scm.lunaixsky.com / lunaix-os.git / blobdiff