| 26,12 → 26,12 |
|---|
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup genarch |
| /** @addtogroup genarch |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief Headers for NS 16550 serial controller. |
| * @brief Headers for NS 16550 serial controller. |
| */ |
| |
| #ifndef KERN_NS16550_H_ |
| 41,38 → 41,34 |
|---|
| #include <arch/types.h> |
| #include <console/chardev.h> |
| |
| #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
| #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
| |
| #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
| #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
| |
| #define MCR_OUT2 0x08 /** OUT2. */ |
| #define MCR_OUT2 0x08 /** OUT2. */ |
| |
| /** NS16550 registers. */ |
| struct ns16550 { |
| ioport8_t rbr; /**< Receiver Buffer Register. */ |
| ioport8_t ier; /**< Interrupt Enable Register. */ |
| typedef struct { |
| ioport8_t rbr; /**< Receiver Buffer Register. */ |
| ioport8_t ier; /**< Interrupt Enable Register. */ |
| union { |
| ioport8_t iir; /**< Interrupt Ident Register (read). */ |
| ioport8_t fcr; /**< FIFO control register (write). */ |
| ioport8_t iir; /**< Interrupt Ident Register (read). */ |
| ioport8_t fcr; /**< FIFO control register (write). */ |
| } __attribute__ ((packed)); |
| ioport8_t lcr; /**< Line Control register. */ |
| ioport8_t mcr; /**< Modem Control Register. */ |
| ioport8_t lsr; /**< Line Status Register. */ |
| } __attribute__ ((packed)); |
| typedef struct ns16550 ns16550_t; |
| ioport8_t lcr; /**< Line Control register. */ |
| ioport8_t mcr; /**< Modem Control Register. */ |
| ioport8_t lsr; /**< Line Status Register. */ |
| } __attribute__ ((packed)) ns16550_t; |
| |
| /** Structure representing the ns16550 device. */ |
| typedef struct ns16550_instance { |
| typedef struct { |
| devno_t devno; |
| ns16550_t *ns16550; |
| irq_t irq; |
| chardev_t *devout; |
| indev_t kbrdin; |
| } ns16550_instance_t; |
| |
| extern bool ns16550_init(ns16550_t *, devno_t, inr_t, cir_t, void *, |
| chardev_t *); |
| extern irq_ownership_t ns16550_claim(irq_t *); |
| extern void ns16550_irq_handler(irq_t *); |
| extern indev_t *ns16550_init(ns16550_t *, devno_t, inr_t, cir_t, void *) |
| |
| #endif |
| |