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34 | * @brief SGCN (Serengeti Console) keyboard port driver. |
34 | * @brief SGCN (Serengeti Console) keyboard port driver. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #include <as.h> |
37 | #include <as.h> |
38 | #include <ddi.h> |
38 | #include <ddi.h> |
39 | #include <ipc/ipc.h> |
- | |
40 | #include <async.h> |
39 | #include <async.h> |
41 | #include <kbd.h> |
40 | #include <kbd.h> |
42 | #include <kbd_port.h> |
41 | #include <kbd_port.h> |
43 | #include <sysinfo.h> |
42 | #include <sysinfo.h> |
44 | #include <stdio.h> |
43 | #include <stdio.h> |
- | 44 | #include <thread.h> |
|
- | 45 | ||
- | 46 | #define POLL_INTERVAL 10000 |
|
45 | 47 | ||
46 | /** |
48 | /** |
47 | * SGCN buffer header. It is placed at the very beginning of the SGCN |
49 | * SGCN buffer header. It is placed at the very beginning of the SGCN |
48 | * buffer. |
50 | * buffer. |
49 | */ |
51 | */ |
Line 85... | Line 87... | ||
85 | /** |
87 | /** |
86 | * SGCN buffer offset within SGCN. |
88 | * SGCN buffer offset within SGCN. |
87 | */ |
89 | */ |
88 | static uintptr_t sram_buffer_offset; |
90 | static uintptr_t sram_buffer_offset; |
89 | 91 | ||
- | 92 | /* polling thread */ |
|
90 | static void sgcn_irq_handler(ipc_callid_t iid, ipc_call_t *call); |
93 | static void *sgcn_thread_impl(void *arg); |
91 | 94 | ||
92 | 95 | ||
93 | /** |
96 | /** |
94 | * Initializes the SGCN driver. |
97 | * Initializes the SGCN driver. |
95 | * Maps the physical memory (SRAM) and registers the interrupt. |
98 | * Maps the physical memory (SRAM) and creates the polling thread. |
96 | */ |
99 | */ |
97 | int kbd_port_init(void) |
100 | int kbd_port_init(void) |
98 | { |
101 | { |
99 | async_set_interrupt_received(sgcn_irq_handler); |
- | |
100 | sram_virt_addr = (uintptr_t) as_get_mappable_page(sysinfo_value("sram.area.size")); |
102 | sram_virt_addr = (uintptr_t) as_get_mappable_page(sysinfo_value("sram.area.size")); |
101 | if (physmem_map((void *) sysinfo_value("sram.address.physical"), |
103 | if (physmem_map((void *) sysinfo_value("sram.address.physical"), |
102 | (void *) sram_virt_addr, sysinfo_value("sram.area.size") / PAGE_SIZE, |
104 | (void *) sram_virt_addr, sysinfo_value("sram.area.size") / PAGE_SIZE, |
103 | AS_AREA_READ | AS_AREA_WRITE) != 0) { |
105 | AS_AREA_READ | AS_AREA_WRITE) != 0) { |
104 | printf("SGCN: uspace driver could not map physical memory."); |
106 | printf("SGCN: uspace driver could not map physical memory."); |
105 | return -1; |
107 | return -1; |
106 | } |
108 | } |
107 | 109 | ||
108 | sram_buffer_offset = sysinfo_value("sram.buffer.offset"); |
110 | sram_buffer_offset = sysinfo_value("sram.buffer.offset"); |
- | 111 | ||
- | 112 | thread_id_t tid; |
|
- | 113 | int rc; |
|
- | 114 | ||
109 | ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), |
115 | rc = thread_create(sgcn_thread_impl, NULL, "kbd_poll", &tid); |
110 | 0, (void *) 0); |
116 | if (rc != 0) { |
- | 117 | return rc; |
|
- | 118 | } |
|
- | 119 | ||
111 | return 0; |
120 | return 0; |
112 | } |
121 | } |
113 | 122 | ||
114 | /** |
123 | /** |
115 | * Handler of the "key pressed" event. Reads codes of all the pressed keys from |
124 | * Handler of the "key pressed" event. Reads codes of all the pressed keys from |
116 | * the buffer. |
125 | * the buffer. |
117 | */ |
126 | */ |
118 | static void sgcn_irq_handler(ipc_callid_t iid, ipc_call_t *call) |
127 | static void sgcn_key_pressed(void) |
119 | { |
128 | { |
120 | char c; |
129 | char c; |
121 | 130 | ||
122 | uint32_t begin = SGCN_BUFFER_HEADER->in_begin; |
131 | uint32_t begin = SGCN_BUFFER_HEADER->in_begin; |
123 | uint32_t end = SGCN_BUFFER_HEADER->in_end; |
132 | uint32_t end = SGCN_BUFFER_HEADER->in_end; |
Line 135... | Line 144... | ||
135 | SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr); |
144 | SGCN_BUFFER(char, SGCN_BUFFER_HEADER->in_rdptr); |
136 | kbd_push_scancode(c); |
145 | kbd_push_scancode(c); |
137 | } |
146 | } |
138 | } |
147 | } |
139 | 148 | ||
- | 149 | /** |
|
- | 150 | * Thread to poll SGCN for keypresses. |
|
- | 151 | */ |
|
- | 152 | static void *sgcn_thread_impl(void *arg) |
|
- | 153 | { |
|
- | 154 | (void) arg; |
|
- | 155 | ||
- | 156 | while (1) { |
|
- | 157 | sgcn_key_pressed(); |
|
- | 158 | usleep(POLL_INTERVAL); |
|
- | 159 | } |
|
- | 160 | } |
|
- | 161 | ||
- | 162 | ||
140 | /** @} |
163 | /** @} |
141 | */ |
164 | */ |