at91usartvar.h revision 1.2
1 /* $NetBSD: at91usartvar.h,v 1.2 2008/07/03 01:15:39 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Embedtronics Oy. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the NetBSD 17 * Foundation, Inc. and its contributors. 18 * 4. Neither the name of The NetBSD Foundation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #ifndef _AT91USARTVAR_H_ 36 #define _AT91USARTVAR_H_ 37 38 #include <sys/tty.h> 39 #include <arm/at91/at91pdcvar.h> 40 41 /* Hardware flag masks */ 42 #define COM_HW_NOIEN 0x01 43 #define COM_HW_DEV_OK 0x20 44 #define COM_HW_CONSOLE 0x40 45 #define COM_HW_KGDB 0x80 46 47 #define RX_TTY_BLOCKED 0x01 48 #define RX_TTY_OVERFLOWED 0x02 49 #define RX_IBUF_BLOCKED 0x04 50 #define RX_IBUF_OVERFLOWED 0x08 51 #define RX_ANY_BLOCK 0x0f 52 53 #define AT91USART_RING_SIZE MAX(PAGE_SIZE, 2048) 54 55 struct at91usart_softc { 56 device_t sc_dev; 57 bus_addr_t sc_hwbase; 58 bus_space_tag_t sc_iot; 59 bus_space_handle_t sc_ioh; 60 bus_dma_tag_t sc_dmat; 61 int sc_pid; 62 63 /* hardware flow control callbacks: */ 64 void (*hwflow)(struct at91usart_softc *, int enabled); 65 void (*start_tx)(struct at91usart_softc *sc); 66 void (*stop_tx)(struct at91usart_softc *sc); 67 void (*rx_started)(struct at91usart_softc *sc); 68 void (*rx_stopped)(struct at91usart_softc *sc); 69 void (*rx_rts_ctl)(struct at91usart_softc *sc, int enabled); 70 71 at91pdc_fifo_t sc_rx_fifo; 72 at91pdc_fifo_t sc_tx_fifo; 73 74 u_char *sc_tba; 75 int sc_tbc; 76 77 void *sc_si; 78 79 struct tty *sc_tty; 80 81 /* status flags */ 82 int sc_hwflags, sc_swflags; 83 84 volatile u_int sc_rx_flags, 85 sc_rx_ready; 86 87 volatile u_int sc_csr, sc_brgr, sc_ier, sc_poll; 88 89 /* power management hooks */ 90 int (*enable)(struct at91usart_softc *); 91 int (*disable)(struct at91usart_softc *); 92 93 int enabled; 94 #if NRND > 0 && defined(RND_COM) 95 rndsource_element_t rnd_source; 96 #endif 97 }; 98 99 struct at91bus_attach_args; 100 void at91usart_attach_subr(struct at91usart_softc *, struct at91bus_attach_args *); 101 int at91usart_cn_attach(bus_space_tag_t, bus_addr_t, bus_space_handle_t, u_int32_t mstclk, int, tcflag_t); 102 103 #endif /* _AT91USARTVAR_H_ */ 104
Indexes created Fri Sep 26 20:09:58 GMT 2025