1 /* $NetBSD: gtmpscvar.h,v 1.8 2010/04/28 13:51:56 kiyohara Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the NetBSD Project by 18 * Allegro Networks, Inc., and Wasabi Systems, Inc. 19 * 4. The name of Allegro Networks, Inc. may not be used to endorse 20 * or promote products derived from this software without specific prior 21 * written permission. 22 * 5. The name of Wasabi Systems, Inc. may not be used to endorse 23 * or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND 27 * WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 28 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 29 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 30 * IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC. 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * gtmpscvar.h - includes for gtmpsctty GT-64260 UART-mode serial driver 42 * 43 * creation Mon Apr 9 19:54:33 PDT 2001 cliff 44 */ 45 #ifndef _DEV_MARVELL_GTMPSCVAR_H 46 #define _DEV_MARVELL_GTMPSCVAR_H 47 48 #include "opt_marvell.h" 49 50 #ifndef GT_MPSC_DEFAULT_BAUD_RATE 51 #define GT_MPSC_DEFAULT_BAUD_RATE 115200 52 #endif 53 #define GTMPSC_CLOCK_DIVIDER 8 54 #define GTMPSC_MMCR_HI_TCDV_DEFAULT GTMPSC_MMCR_HI_TCDV_8X 55 #define GTMPSC_MMCR_HI_RCDV_DEFAULT GTMPSC_MMCR_HI_RCDV_8X 56 #define BRG_BCR_CDV_MAX 0xffff 57 58 /* 59 * gtmpsc_poll_dmapage_t - used for MPSC getchar/putchar polled console 60 * 61 * sdma descriptors must be 16 byte aligned 62 * sdma RX buffer pointers must be 8 byte aligned 63 */ 64 #define GTMPSC_NTXDESC 64 65 #define GTMPSC_NRXDESC 64 66 #define GTMPSC_TXBUFSZ 16 67 #define GTMPSC_RXBUFSZ 16 68 69 typedef struct gtmpsc_polltx { 70 sdma_desc_t txdesc; 71 unsigned char txbuf[GTMPSC_TXBUFSZ]; 72 } gtmpsc_polltx_t; 73 74 typedef struct gtmpsc_pollrx { 75 sdma_desc_t rxdesc; 76 unsigned char rxbuf[GTMPSC_RXBUFSZ]; 77 } gtmpsc_pollrx_t; 78 79 typedef struct { 80 gtmpsc_polltx_t tx[GTMPSC_NTXDESC]; 81 gtmpsc_pollrx_t rx[GTMPSC_NRXDESC]; 82 } gtmpsc_poll_sdma_t; 83 84 85 #include <sys/timepps.h> 86 #include <sys/tty.h> 87 88 typedef struct gtmpsc_softc { 89 device_t sc_dev; 90 int sc_unit; 91 bus_space_tag_t sc_iot; 92 bus_space_handle_t sc_mpsch; 93 bus_space_handle_t sc_sdmah; 94 bus_dma_tag_t sc_dmat; 95 gtmpsc_poll_sdma_t *sc_poll_sdmapage; 96 bus_dmamap_t sc_rxdma_map; 97 bus_dmamap_t sc_txdma_map; 98 int sc_brg; /* using Baud Rate Generator */ 99 int sc_baudrate; 100 tcflag_t sc_cflag; 101 void *sc_si; /* softintr cookie */ 102 struct tty *sc_tty; /* our tty */ 103 uint32_t sc_flags; 104 #define GTMPSC_CONSOLE (1 << 0) 105 #define GTMPSC_KGDB (1 << 1) 106 107 volatile int sc_rcvcnt; /* byte count of RX buffer */ 108 volatile int sc_roffset; /* offset of RX buffer */ 109 volatile int sc_rcvrx; /* receive rx xfer index */ 110 volatile int sc_rcvdrx; /* received rx xfer index */ 111 volatile int sc_readrx; /* read rx xfer index */ 112 volatile int sc_nexttx; /* "next" tx xfer index */ 113 volatile int sc_lasttx; /* "last" tx xfer index */ 114 volatile u_char sc_rx_ready; 115 volatile u_char sc_tx_busy; 116 volatile u_char sc_tx_done; 117 volatile u_char sc_tx_stopped; 118 volatile u_char sc_heldchange; /* new params wait for output */ 119 u_char *sc_tba; /* Tx buf ptr */ 120 u_int sc_tbc; /* Tx buf cnt */ 121 u_int sc_heldtbc; 122 123 kmutex_t sc_lock; 124 struct pps_state sc_pps_state; 125 } gtmpsc_softc_t; 126 127 /* Make receiver interrupt 8 times a second */ 128 /* There are 10 bits in a frame */ 129 #define GTMPSC_MAXIDLE(baudrate) ((baudrate) / (10 * 8)) 130 131 132 static __inline int 133 compute_cdv(unsigned int baud) 134 { 135 unsigned int cdv; 136 137 if (baud == 0) 138 return 0; 139 cdv = (GT_MPSC_FREQUENCY / (baud * GTMPSC_CLOCK_DIVIDER) + 1) / 2 - 1; 140 if (cdv > BRG_BCR_CDV_MAX) 141 return -1; 142 return cdv; 143 } 144 145 146 int gtmpsc_intr(void *); 147 148 #ifdef MPSC_CONSOLE 149 extern gtmpsc_softc_t gtmpsc_cn_softc; 150 151 int gtmpsccnattach(bus_space_tag_t, bus_dma_tag_t, bus_addr_t, int, int, int, 152 tcflag_t); 153 #endif 154 155 #endif /* _DEV_MARVELL_GTPSCVAR_H */ 156
Indexes created Sat Sep 20 22:09:52 GMT 2025