/* * serial.h: Arch-dep definitions for the Etrax100 serial driver. * * Copyright (C) 1998-2007 Axis Communications AB */ #ifndef _ETRAX_SERIAL_H #define _ETRAX_SERIAL_H #include <linux/circ_buf.h> #include <asm/termios.h> #include <asm/dma.h> #include <arch/io_interface_mux.h> /* Software state per channel */ #ifdef __KERNEL__ /* * This is our internal structure for each serial port's state. * * Many fields are paralleled by the structure used by the serial_struct * structure. * * For definitions of the flags field, see tty.h */ #define SERIAL_RECV_DESCRIPTORS 8 struct etrax_recv_buffer { struct etrax_recv_buffer *next; unsigned short length; unsigned char error; unsigned char pad; unsigned char buffer[0]; }; struct e100_serial { struct tty_port port; int baud; volatile u8 *ioport; /* R_SERIALx_CTRL */ u32 irq; /* bitnr in R_IRQ_MASK2 for dmaX_descr */ /* Output registers */ volatile u8 *oclrintradr; /* adr to R_DMA_CHx_CLR_INTR */ volatile u32 *ofirstadr; /* adr to R_DMA_CHx_FIRST */ volatile u8 *ocmdadr; /* adr to R_DMA_CHx_CMD */ const volatile u8 *ostatusadr; /* adr to R_DMA_CHx_STATUS */ /* Input registers */ volatile u8 *iclrintradr; /* adr to R_DMA_CHx_CLR_INTR */ volatile u32 *ifirstadr; /* adr to R_DMA_CHx_FIRST */ volatile u8 *icmdadr; /* adr to R_DMA_CHx_CMD */ volatile u32 *idescradr; /* adr to R_DMA_CHx_DESCR */ u8 rx_ctrl; /* shadow for R_SERIALx_REC_CTRL */ u8 tx_ctrl; /* shadow for R_SERIALx_TR_CTRL */ u8 iseteop; /* bit number for R_SET_EOP for the input dma */ int enabled; /* Set to 1 if the port is enabled in HW config */ u8 dma_out_enabled; /* Set to 1 if DMA should be used */ u8 dma_in_enabled; /* Set to 1 if DMA should be used */ /* end of fields defined in rs_table[] in .c-file */ int dma_owner; unsigned int dma_in_nbr; unsigned int dma_out_nbr; unsigned int dma_in_irq_nbr; unsigned int dma_out_irq_nbr; unsigned long dma_in_irq_flags; unsigned long dma_out_irq_flags; char *dma_in_irq_description; char *dma_out_irq_description; enum cris_io_interface io_if; char *io_if_description; u8 uses_dma_in; /* Set to 1 if DMA is used */ u8 uses_dma_out; /* Set to 1 if DMA is used */ u8 forced_eop; /* a fifo eop has been forced */ int baud_base; /* For special baudrates */ int custom_divisor; /* For special baudrates */ struct etrax_dma_descr tr_descr; struct etrax_dma_descr rec_descr[SERIAL_RECV_DESCRIPTORS]; int cur_rec_descr; volatile int tr_running; /* 1 if output is running */ int x_char; /* xon/xoff character */ unsigned long event; int line; int type; /* PORT_ETRAX */ struct circ_buf xmit; struct etrax_recv_buffer *first_recv_buffer; struct etrax_recv_buffer *last_recv_buffer; unsigned int recv_cnt; unsigned int max_recv_cnt; struct work_struct work; struct async_icount icount; /* error-statistics etc.*/ unsigned long char_time_usec; /* The time for 1 char, in usecs */ unsigned long flush_time_usec; /* How often we should flush */ unsigned long last_tx_active_usec; /* Last tx usec in the jiffies */ unsigned long last_tx_active; /* Last tx time in jiffies */ unsigned long last_rx_active_usec; /* Last rx usec in the jiffies */ unsigned long last_rx_active; /* Last rx time in jiffies */ int break_detected_cnt; int errorcode; #ifdef CONFIG_ETRAX_RS485 struct serial_rs485 rs485; /* RS-485 support */ #endif }; /* this PORT is not in the standard serial.h. it's not actually used for * anything since we only have one type of async serial-port anyway in this * system. */ #define PORT_ETRAX 1 /* * Events are used to schedule things to happen at timer-interrupt * time, instead of at rs interrupt time. */ #define RS_EVENT_WRITE_WAKEUP 0 #endif /* __KERNEL__ */ #endif /* !_ETRAX_SERIAL_H */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jesper Nilsson | 339 | 98.26% | 2 | 50.00% |
| Alan Cox | 5 | 1.45% | 1 | 25.00% |
| Claudio Scordino | 1 | 0.29% | 1 | 25.00% |
| Total | 345 | 100.00% | 4 | 100.00% |