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| 1 | 51 | up20180655 | #ifndef _KBC_H_
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| 2 | #define _KBC_H_
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| 3 | |||
| 4 | /* KBC IRQ Line */
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| 5 | |||
| 6 | #define KBC_IRQ 1 /* @brief KBC Controller IRQ Line */ |
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| 7 | |||
| 8 | /* Delay for KBC */
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| 9 | #define DELAY 20000 /* @brief KBC Response Delay */ |
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| 10 | #define KBC_NUM_TRIES 10 /* @brief Number of tries to issue command before timeout */ |
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| 11 | |||
| 12 | /* I/O Ports Addresses */
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| 13 | |||
| 14 | #define KBC_CMD 0x64 /* @brief Address to send commands to KBC */ |
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| 15 | #define KBC_CMD_ARG 0x60 /* @brief Address to write KBC Command Arguments */ |
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| 16 | #define STATUS_REG 0x64 /* @brief KBC Status Register address */ |
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| 17 | |||
| 18 | #define OUTPUT_BUF 0x60 /* @brief Address of Output Buffer of KBC */ |
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| 19 | |||
| 20 | /* KBC Commands */
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| 21 | #define READ_KBC_CMD 0x20 /* @brief Read KBC Command Byte */ |
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| 22 | #define WRITE_KBC_CMD 0x60 /* @brief Write KBC Command Byte */ |
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| 23 | #define KBC_SELF_TEST 0xAA /* @brief KBC Diagnostic Tests */ |
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| 24 | #define KBC_INT_TEST 0xAB /* @brief Tests Keyboard Clock and Data lines */ |
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| 25 | #define KBC_INT_DISABLE 0xAD /* @brief Disable KBC Interface */ |
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| 26 | #define KBC_INT_ENABLE 0xAE /* @brief Enable KBC Interface */ |
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| 27 | #define MOUSE_DISABLE 0xA7 /* @brief Disable Mouse */ |
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| 28 | #define MOUSE_ENABLE 0xA8 /* @brief Enable Mouse */ |
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| 29 | #define MOUSE_INT_TEST 0xA9 /* @brief Tests Mouse data line */ |
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| 30 | #define MOUSE_WRITE_B 0xD4 /* @brief Write a byte directly to the mouse */ |
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| 31 | |||
| 32 | /* Status Byte Masking */
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| 33 | |||
| 34 | #define OUT_BUF_FUL BIT(0) /* @brief Output Buffer State */ |
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| 35 | #define IN_BUF_FULL BIT(1) /* @brief Input Buffer State */ |
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| 36 | #define SYS_FLAG BIT(2) /* @brief System Flag */ |
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| 37 | #define DATA_CMD_WRITE BIT(3) /* @brief Identifier of type of byte in input buffer */ |
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| 38 | #define INH_FLAG BIT(4) /* @brief Keyboard inihibited */ |
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| 39 | #define AUX_MOUSE BIT(5) /* @brief Mouse Data */ |
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| 40 | #define TIME_OUT_REC BIT(6) /* @brief Time Out Error - Invalid Data */ |
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| 41 | #define PARITY_ERROR BIT(7) /* @brief Parity Error - Invalid Data */ |
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| 42 | |||
| 43 | /* Scancode Constants */
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| 44 | |||
| 45 | #define ESC_BREAK_CODE 0x81 /* @brief ESC Break Code */ |
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| 46 | #define TWO_BYTE_CODE 0xE0 /* @brief First byte of a two byte Scancode */ |
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| 47 | #define BREAK_CODE_BIT BIT(7) /* @brief Bit to distinguish between Make code and Break code */ |
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| 48 | |||
| 49 | /* Command byte masks */
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| 50 | #define INT_KBD BIT(0) /* @brief Enable Keyboard Interrupts */ |
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| 51 | #define INT_MOU BIT(1) /* @brief Enable Mouse Interrupts */ |
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| 52 | #define DIS_KBD BIT(4) /* @brief Disable Keyboard */ |
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| 53 | #define DIS_MOU BIT(5) /* @brief Disable Mouse */ |
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| 54 | |||
| 55 | #endif |