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Rev 3577 | Rev 3646 | ||
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56 | #define RBR_REG 0 /** Receiver Buffer Register. */ |
56 | #define RBR_REG 0 /** Receiver Buffer Register. */ |
57 | #define IER_REG 1 /** Interrupt Enable Register. */ |
57 | #define IER_REG 1 /** Interrupt Enable Register. */ |
58 | #define IIR_REG 2 /** Interrupt Ident Register (read). */ |
58 | #define IIR_REG 2 /** Interrupt Ident Register (read). */ |
59 | #define FCR_REG 2 /** FIFO control register (write). */ |
59 | #define FCR_REG 2 /** FIFO control register (write). */ |
60 | #define LCR_REG 3 /** Line Control register. */ |
60 | #define LCR_REG 3 /** Line Control register. */ |
- | 61 | #define MCR_REG 4 /** Modem Control Register. */ |
|
61 | #define LSR_REG 5 /** Line Status Register. */ |
62 | #define LSR_REG 5 /** Line Status Register. */ |
62 | 63 | ||
63 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
64 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
64 | 65 | ||
65 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
66 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
66 | 67 | ||
- | 68 | #define MCR_OUT2 0x08 /** OUT2. */ |
|
- | 69 | ||
67 | /** Structure representing the ns16550 device. */ |
70 | /** Structure representing the ns16550 device. */ |
68 | typedef struct { |
71 | typedef struct { |
69 | devno_t devno; |
72 | devno_t devno; |
70 | volatile ioport_t io_port; /** Memory mapped registers of the ns16550. */ |
73 | /** Memory mapped registers of the ns16550. */ |
- | 74 | volatile ioport_t io_port; |
|
71 | } ns16550_t; |
75 | } ns16550_t; |
72 | 76 | ||
73 | static inline uint8_t ns16550_rbr_read(ns16550_t *dev) |
77 | static inline uint8_t ns16550_rbr_read(ns16550_t *dev) |
74 | { |
78 | { |
75 | return inb(dev->io_port+RBR_REG); |
79 | return inb(dev->io_port + RBR_REG); |
76 | } |
80 | } |
77 | static inline void ns16550_rbr_write(ns16550_t *dev, uint8_t v) |
81 | static inline void ns16550_rbr_write(ns16550_t *dev, uint8_t v) |
78 | { |
82 | { |
79 | outb(dev->io_port+RBR_REG,v); |
83 | outb(dev->io_port + RBR_REG, v); |
80 | } |
84 | } |
81 | 85 | ||
82 | static inline uint8_t ns16550_ier_read(ns16550_t *dev) |
86 | static inline uint8_t ns16550_ier_read(ns16550_t *dev) |
83 | { |
87 | { |
84 | return inb(dev->io_port+IER_REG); |
88 | return inb(dev->io_port + IER_REG); |
85 | } |
89 | } |
86 | 90 | ||
87 | static inline void ns16550_ier_write(ns16550_t *dev, uint8_t v) |
91 | static inline void ns16550_ier_write(ns16550_t *dev, uint8_t v) |
88 | { |
92 | { |
89 | outb(dev->io_port+IER_REG,v); |
93 | outb(dev->io_port + IER_REG, v); |
90 | } |
94 | } |
91 | 95 | ||
92 | static inline uint8_t ns16550_iir_read(ns16550_t *dev) |
96 | static inline uint8_t ns16550_iir_read(ns16550_t *dev) |
93 | { |
97 | { |
94 | return inb(dev->io_port+IIR_REG); |
98 | return inb(dev->io_port + IIR_REG); |
95 | } |
99 | } |
96 | 100 | ||
97 | static inline void ns16550_fcr_write(ns16550_t *dev, uint8_t v) |
101 | static inline void ns16550_fcr_write(ns16550_t *dev, uint8_t v) |
98 | { |
102 | { |
99 | outb(dev->io_port+FCR_REG,v); |
103 | outb(dev->io_port + FCR_REG, v); |
100 | } |
104 | } |
101 | 105 | ||
102 | static inline uint8_t ns16550_lcr_read(ns16550_t *dev) |
106 | static inline uint8_t ns16550_lcr_read(ns16550_t *dev) |
103 | { |
107 | { |
104 | return inb(dev->io_port+LCR_REG); |
108 | return inb(dev->io_port + LCR_REG); |
105 | } |
109 | } |
106 | 110 | ||
107 | static inline void ns16550_lcr_write(ns16550_t *dev, uint8_t v) |
111 | static inline void ns16550_lcr_write(ns16550_t *dev, uint8_t v) |
108 | { |
112 | { |
109 | outb(dev->io_port+LCR_REG,v); |
113 | outb(dev->io_port + LCR_REG, v); |
110 | } |
114 | } |
111 | 115 | ||
112 | static inline uint8_t ns16550_lsr_read(ns16550_t *dev) |
116 | static inline uint8_t ns16550_lsr_read(ns16550_t *dev) |
113 | { |
117 | { |
114 | return inb(dev->io_port+LSR_REG); |
118 | return inb(dev->io_port + LSR_REG); |
115 | } |
119 | } |
116 | 120 | ||
- | 121 | static inline uint8_t ns16550_mcr_read(ns16550_t *dev) |
|
- | 122 | { |
|
- | 123 | return inb(dev->io_port + MCR_REG); |
|
- | 124 | } |
|
117 | 125 | ||
- | 126 | static inline void ns16550_mcr_write(ns16550_t *dev, uint8_t v) |
|
- | 127 | { |
|
- | 128 | outb(dev->io_port + MCR_REG, v); |
|
- | 129 | } |
|
118 | 130 | ||
119 | #endif |
131 | #endif |
120 | 132 | ||
121 | /** @} |
133 | /** @} |
122 | */ |
134 | */ |