Rev 1896 | Rev 1957 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1896 | Rev 1956 | ||
---|---|---|---|
Line 39... | Line 39... | ||
39 | #include <genarch/kbd/i8042.h> |
39 | #include <genarch/kbd/i8042.h> |
40 | #include <genarch/kbd/key.h> |
40 | #include <genarch/kbd/key.h> |
41 | #include <genarch/kbd/scanc.h> |
41 | #include <genarch/kbd/scanc.h> |
42 | #include <genarch/kbd/scanc_pc.h> |
42 | #include <genarch/kbd/scanc_pc.h> |
43 | #include <arch/drivers/i8042.h> |
43 | #include <arch/drivers/i8042.h> |
44 | #include <arch/interrupt.h> |
- | |
45 | #include <cpu.h> |
44 | #include <cpu.h> |
46 | #include <arch/asm.h> |
45 | #include <arch/asm.h> |
47 | #include <arch.h> |
46 | #include <arch.h> |
48 | #include <typedefs.h> |
47 | #include <typedefs.h> |
49 | #include <console/chardev.h> |
48 | #include <console/chardev.h> |
50 | #include <console/console.h> |
49 | #include <console/console.h> |
51 | #include <interrupt.h> |
50 | #include <interrupt.h> |
- | 51 | #include <sysinfo/sysinfo.h> |
|
- | 52 | #include <ddi/irq.h> |
|
52 | 53 | ||
53 | /* Keyboard commands. */ |
54 | /* Keyboard commands. */ |
54 | #define KBD_ENABLE 0xf4 |
55 | #define KBD_ENABLE 0xf4 |
55 | #define KBD_DISABLE 0xf5 |
56 | #define KBD_DISABLE 0xf5 |
56 | #define KBD_ACK 0xfa |
57 | #define KBD_ACK 0xfa |
Line 84... | Line 85... | ||
84 | .suspend = i8042_suspend, |
85 | .suspend = i8042_suspend, |
85 | .resume = i8042_resume, |
86 | .resume = i8042_resume, |
86 | .read = i8042_key_read |
87 | .read = i8042_key_read |
87 | }; |
88 | }; |
88 | 89 | ||
- | 90 | /** Structure for i8042's IRQ. */ |
|
- | 91 | static irq_t i8042_irq; |
|
- | 92 | ||
89 | static void i8042_interrupt(int n, istate_t *istate); |
93 | /** Wait until the controller reads its data. */ |
90 | static void i8042_wait(void); |
94 | static void i8042_wait(void) { |
- | 95 | while (i8042_status_read() & i8042_WAIT_MASK) { |
|
- | 96 | /* wait */ |
|
- | 97 | } |
|
- | 98 | } |
|
91 | 99 | ||
92 | static iroutine oldvector; |
- | |
93 | /** Initialize keyboard and service interrupts using kernel routine */ |
- | |
94 | void i8042_grab(void) |
100 | void i8042_grab(void) |
95 | { |
101 | { |
96 | oldvector = exc_register(VECTOR_KBD, "i8042_interrupt", (iroutine) i8042_interrupt); |
102 | ipl_t ipl = interrupts_disable(); |
- | 103 | ||
97 | i8042_wait(); |
104 | i8042_wait(); |
98 | i8042_command_write(i8042_SET_COMMAND); |
105 | i8042_command_write(i8042_SET_COMMAND); |
99 | i8042_wait(); |
106 | i8042_wait(); |
100 | i8042_data_write(i8042_COMMAND); |
107 | i8042_data_write(i8042_COMMAND); |
101 | i8042_wait(); |
108 | i8042_wait(); |
- | 109 | ||
- | 110 | spinlock_lock(&i8042_irq.lock); |
|
- | 111 | i8042_irq.notif_cfg.notify = false; |
|
- | 112 | spinlock_unlock(&i8042_irq.lock); |
|
- | 113 | interrupts_restore(ipl); |
|
102 | } |
114 | } |
103 | /** Resume the former interrupt vector */ |
- | |
- | 115 | ||
104 | void i8042_release(void) |
116 | void i8042_release(void) |
105 | { |
117 | { |
- | 118 | ipl_t ipl = interrupts_disable(); |
|
- | 119 | spinlock_lock(&i8042_irq.lock); |
|
106 | if (oldvector) |
120 | if (i8042_irq.notif_cfg.answerbox) |
107 | exc_register(VECTOR_KBD, "user_interrupt", oldvector); |
121 | i8042_irq.notif_cfg.notify = true; |
- | 122 | spinlock_unlock(&i8042_irq.lock); |
|
- | 123 | interrupts_restore(ipl); |
|
108 | } |
124 | } |
109 | 125 | ||
110 | /** Initialize i8042. */ |
- | |
111 | void i8042_init(void) |
126 | static irq_ownership_t i8042_claim(void) |
112 | { |
127 | { |
113 | int i; |
128 | return IRQ_ACCEPT; |
- | 129 | } |
|
114 | 130 | ||
- | 131 | static void i8042_irq_handler(irq_t *irq, void *arg, ...) |
|
- | 132 | { |
|
- | 133 | if (irq->notif_cfg.notify && irq->notif_cfg.answerbox) |
|
- | 134 | ipc_irq_send_notif(irq); |
|
- | 135 | else { |
|
- | 136 | uint8_t x; |
|
115 | i8042_grab(); |
137 | uint8_t status; |
- | 138 | ||
116 | /* Prevent user from accidentaly releasing calling i8042_resume |
139 | while (((status = i8042_status_read()) & i8042_BUFFER_FULL_MASK)) { |
117 | * and disabling keyboard |
140 | x = i8042_data_read(); |
- | 141 | ||
- | 142 | if ((status & i8042_MOUSE_DATA)) |
|
- | 143 | continue; |
|
118 | */ |
144 | |
- | 145 | if (x & KEY_RELEASE) |
|
- | 146 | key_released(x ^ KEY_RELEASE); |
|
- | 147 | else |
|
119 | oldvector = NULL; |
148 | key_pressed(x); |
- | 149 | } |
|
- | 150 | } |
|
- | 151 | } |
|
120 | 152 | ||
- | 153 | /** Initialize i8042. */ |
|
121 | trap_virtual_enable_irqs(1<<IRQ_KBD); |
154 | void i8042_init(devno_t devno, inr_t inr) |
- | 155 | { |
|
122 | chardev_initialize("i8042_kbd", &kbrd, &ops); |
156 | chardev_initialize("i8042_kbd", &kbrd, &ops); |
123 | stdin = &kbrd; |
157 | stdin = &kbrd; |
124 | 158 | ||
- | 159 | irq_initialize(&i8042_irq); |
|
- | 160 | i8042_irq.devno = devno; |
|
- | 161 | i8042_irq.inr = inr; |
|
- | 162 | i8042_irq.claim = i8042_claim; |
|
- | 163 | i8042_irq.handler = i8042_irq_handler; |
|
- | 164 | irq_register(&i8042_irq); |
|
- | 165 | ||
- | 166 | trap_virtual_enable_irqs(1 << inr); |
|
- | 167 | ||
125 | /* |
168 | /* |
126 | * Clear input buffer. |
169 | * Clear input buffer. |
127 | * Number of iterations is limited to prevent infinite looping. |
170 | * Number of iterations is limited to prevent infinite looping. |
128 | */ |
171 | */ |
- | 172 | int i; |
|
129 | for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) { |
173 | for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) { |
130 | i8042_data_read(); |
174 | i8042_data_read(); |
131 | } |
- | |
132 | } |
- | |
133 | - | ||
134 | /** Process i8042 interrupt. |
- | |
135 | * |
- | |
136 | * @param n Interrupt vector. |
- | |
137 | * @param istate Interrupted state. |
- | |
138 | */ |
- | |
139 | void i8042_interrupt(int n, istate_t *istate) |
- | |
140 | { |
- | |
141 | uint8_t x; |
- | |
142 | uint8_t status; |
- | |
143 | - | ||
144 | while (((status=i8042_status_read()) & i8042_BUFFER_FULL_MASK)) { |
- | |
145 | x = i8042_data_read(); |
- | |
146 | - | ||
147 | if ((status & i8042_MOUSE_DATA)) |
- | |
148 | continue; |
- | |
149 | - | ||
150 | if (x & KEY_RELEASE) |
- | |
151 | key_released(x ^ KEY_RELEASE); |
- | |
152 | else |
- | |
153 | key_pressed(x); |
- | |
154 | } |
- | |
155 | trap_virtual_eoi(); |
- | |
156 | } |
- | |
157 | - | ||
158 | /** Wait until the controller reads its data. */ |
- | |
159 | void i8042_wait(void) { |
- | |
160 | while (i8042_status_read() & i8042_WAIT_MASK) { |
- | |
161 | /* wait */ |
- | |
162 | } |
175 | } |
- | 176 | ||
- | 177 | sysinfo_set_item_val("kbd", NULL, true); |
|
- | 178 | sysinfo_set_item_val("kbd.devno", NULL, devno); |
|
- | 179 | sysinfo_set_item_val("kbd.inr", NULL, inr); |
|
- | 180 | ||
- | 181 | i8042_grab(); |
|
163 | } |
182 | } |
164 | 183 | ||
165 | /* Called from getc(). */ |
184 | /* Called from getc(). */ |
166 | void i8042_resume(chardev_t *d) |
185 | void i8042_resume(chardev_t *d) |
167 | { |
186 | { |