mirror of https://gitee.com/openkylin/linux.git
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
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/*
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* linux/drivers/serial/cpm_uart.h
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*
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* Driver for CPM (SCC/SMC) serial ports
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*
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* Copyright (C) 2004 Freescale Semiconductor, Inc.
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*
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*/
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#ifndef CPM_UART_H
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#define CPM_UART_H
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#include <linux/config.h>
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#if defined(CONFIG_CPM2)
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#include "cpm_uart_cpm2.h"
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#elif defined(CONFIG_8xx)
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#include "cpm_uart_cpm1.h"
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#endif
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#define SERIAL_CPM_MAJOR 204
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#define SERIAL_CPM_MINOR 46
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#define IS_SMC(pinfo) (pinfo->flags & FLAG_SMC)
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#define IS_DISCARDING(pinfo) (pinfo->flags & FLAG_DISCARDING)
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#define FLAG_DISCARDING 0x00000004 /* when set, don't discard */
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#define FLAG_SMC 0x00000002
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#define FLAG_CONSOLE 0x00000001
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#define UART_SMC1 0
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#define UART_SMC2 1
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#define UART_SCC1 2
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#define UART_SCC2 3
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#define UART_SCC3 4
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#define UART_SCC4 5
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#define UART_NR 6
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#define RX_NUM_FIFO 4
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#define RX_BUF_SIZE 32
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#define TX_NUM_FIFO 4
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#define TX_BUF_SIZE 32
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struct uart_cpm_port {
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struct uart_port port;
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u16 rx_nrfifos;
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u16 rx_fifosize;
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u16 tx_nrfifos;
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u16 tx_fifosize;
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smc_t *smcp;
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smc_uart_t *smcup;
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scc_t *sccp;
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scc_uart_t *sccup;
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volatile cbd_t *rx_bd_base;
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volatile cbd_t *rx_cur;
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volatile cbd_t *tx_bd_base;
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volatile cbd_t *tx_cur;
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unsigned char *tx_buf;
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unsigned char *rx_buf;
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u32 flags;
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void (*set_lineif)(struct uart_cpm_port *);
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u8 brg;
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uint dp_addr;
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void *mem_addr;
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dma_addr_t dma_addr;
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/* helpers */
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int baud;
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int bits;
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/* Keep track of 'odd' SMC2 wirings */
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int is_portb;
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};
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extern int cpm_uart_port_map[UART_NR];
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extern int cpm_uart_nr;
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extern struct uart_cpm_port cpm_uart_ports[UART_NR];
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/* these are located in their respective files */
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void cpm_line_cr_cmd(int line, int cmd);
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int cpm_uart_init_portdesc(void);
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int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
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void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
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void smc1_lineif(struct uart_cpm_port *pinfo);
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void smc2_lineif(struct uart_cpm_port *pinfo);
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void scc1_lineif(struct uart_cpm_port *pinfo);
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void scc2_lineif(struct uart_cpm_port *pinfo);
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void scc3_lineif(struct uart_cpm_port *pinfo);
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void scc4_lineif(struct uart_cpm_port *pinfo);
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#endif /* CPM_UART_H */
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