| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 | struct uart_cpm_port { |
| 44 | struct uart_port port; |
| 45 | u16 rx_nrfifos; |
| 46 | u16 rx_fifosize; |
| 47 | u16 tx_nrfifos; |
| 48 | u16 tx_fifosize; |
| 49 | smc_t *smcp; |
| 50 | smc_uart_t *smcup; |
| 51 | scc_t *sccp; |
| 52 | scc_uart_t *sccup; |
| 53 | volatile cbd_t *rx_bd_base; |
| 54 | volatile cbd_t *rx_cur; |
| 55 | volatile cbd_t *tx_bd_base; |
| 56 | volatile cbd_t *tx_cur; |
| 57 | unsigned char *tx_buf; |
| 58 | unsigned char *rx_buf; |
| 59 | u32 flags; |
| 60 | void (*set_lineif)(struct uart_cpm_port *); |
| 61 | u8 brg; |
| 62 | uint dp_addr; |
| 63 | void *mem_addr; |
| 64 | dma_addr_t dma_addr; |
| 65 | /* helpers */ |
| 66 | int baud; |
| 67 | int bits; |
| 68 | /* Keep track of 'odd' SMC2 wirings */ |
| 69 | int is_portb; |
| 70 | }; |
| 71 | |
| 72 | extern int cpm_uart_port_map[UART_NR]; |
| 73 | extern int cpm_uart_nr; |
| 74 | extern struct uart_cpm_port cpm_uart_ports[UART_NR]; |
| 75 | |
| 76 | /* these are located in their respective files */ |
| 77 | void cpm_line_cr_cmd(int line, int cmd); |
| 78 | int cpm_uart_init_portdesc(void); |
| 79 | int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con); |
| 80 | void cpm_uart_freebuf(struct uart_cpm_port *pinfo); |
| 81 | |
| 82 | void smc1_lineif(struct uart_cpm_port *pinfo); |
| 83 | void smc2_lineif(struct uart_cpm_port *pinfo); |
| 84 | void scc1_lineif(struct uart_cpm_port *pinfo); |
| 85 | void scc2_lineif(struct uart_cpm_port *pinfo); |
| 86 | void scc3_lineif(struct uart_cpm_port *pinfo); |
| 87 | void scc4_lineif(struct uart_cpm_port *pinfo); |
| 88 | |
| 89 | #endif /* CPM_UART_H */ |