drivers/serial/cpm_uart/cpm_uart.h

   1 /*
   2  *  linux/drivers/serial/cpm_uart.h
   3  *
   4  *  Driver for CPM (SCC/SMC) serial ports
   5  *
   6  *  Copyright (C) 2004 Freescale Semiconductor, Inc.
   7  *
   8  */
   9 #ifndef CPM_UART_H
  10 #define CPM_UART_H
  11
  12 #include <linux/config.h>
  13
  14 #if defined(CONFIG_CPM2)
  15 #include "cpm_uart_cpm2.h"
  16 #elif defined(CONFIG_8xx)
  17 #include "cpm_uart_cpm1.h"
  18 #endif
  19
  20 #define SERIAL_CPM_MAJOR        204
  21 #define SERIAL_CPM_MINOR        46
  22
  23 #define IS_SMC(pinfo)           (pinfo->flags & FLAG_SMC)
  24 #define IS_DISCARDING(pinfo)    (pinfo->flags & FLAG_DISCARDING)
  25 #define FLAG_DISCARDING 0x00000004      /* when set, don't discard */
  26 #define FLAG_SMC        0x00000002
  27 #define FLAG_CONSOLE    0x00000001
  28
  29 #define UART_SMC1       0
  30 #define UART_SMC2       1
  31 #define UART_SCC1       2
  32 #define UART_SCC2       3
  33 #define UART_SCC3       4
  34 #define UART_SCC4       5
  35
  36 #define UART_NR 6
  37
  38 #define RX_NUM_FIFO     4
  39 #define RX_BUF_SIZE     32
  40 #define TX_NUM_FIFO     4
  41 #define TX_BUF_SIZE     32
  42
  43 #define SCC_WAIT_CLOSING 100
  44
  45 struct uart_cpm_port {
  46         struct uart_port        port;
  47         u16                     rx_nrfifos;
  48         u16                     rx_fifosize;
  49         u16                     tx_nrfifos;
  50         u16                     tx_fifosize;
  51         smc_t                   *smcp;
  52         smc_uart_t              *smcup;
  53         scc_t                   *sccp;
  54         scc_uart_t              *sccup;
  55         volatile cbd_t          *rx_bd_base;
  56         volatile cbd_t          *rx_cur;
  57         volatile cbd_t          *tx_bd_base;
  58         volatile cbd_t          *tx_cur;
  59         unsigned char           *tx_buf;
  60         unsigned char           *rx_buf;
  61         u32                     flags;
  62         void                    (*set_lineif)(struct uart_cpm_port *);
  63         u8                      brg;
  64         uint                     dp_addr;
  65         void                    *mem_addr;
  66         dma_addr_t               dma_addr;
  67         /* helpers */
  68         int                      baud;
  69         int                      bits;
  70         /* Keep track of 'odd' SMC2 wirings */
  71         int                     is_portb;
  72         /* wait on close if needed */
  73         int                     wait_closing;
  74 };
  75
  76 extern int cpm_uart_port_map[UART_NR];
  77 extern int cpm_uart_nr;
  78 extern struct uart_cpm_port cpm_uart_ports[UART_NR];
  79
  80 /* these are located in their respective files */
  81 void cpm_line_cr_cmd(int line, int cmd);
  82 int cpm_uart_init_portdesc(void);
  83 int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
  84 void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
  85
  86 void smc1_lineif(struct uart_cpm_port *pinfo);
  87 void smc2_lineif(struct uart_cpm_port *pinfo);
  88 void scc1_lineif(struct uart_cpm_port *pinfo);
  89 void scc2_lineif(struct uart_cpm_port *pinfo);
  90 void scc3_lineif(struct uart_cpm_port *pinfo);
  91 void scc4_lineif(struct uart_cpm_port *pinfo);
  92
  93 #endif /* CPM_UART_H */