gtmpscvar.h revision 1.1
1 /* $NetBSD: gtmpscvar.h,v 1.1 2003/03/05 22:08:22 matt 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 46 #include "opt_marvell.h" 47 48 #ifndef GT_MPSC_DEFAULT_BAUD_RATE 49 #define GT_MPSC_DEFAULT_BAUD_RATE 115200 50 #endif 51 #define GTMPSC_CLOCK_DIVIDER 8 52 #define GTMPSC_MMCR_HI_TCDV_DEFAULT GTMPSC_MMCR_HI_TCDV_8X 53 #define GTMPSC_MMCR_HI_RCDV_DEFAULT GTMPSC_MMCR_HI_RCDV_8X 54 #define BRG_DEFAULT_INPUT_RATE 100000000 55 #define BRG_BCR_CDV_MAX 0xffff 56 57 /* 58 * gtmpsc_poll_dmapage_t - used for MPSC getchar/putchar polled console 59 * 60 * sdma descriptors must be 16 byte aligned 61 * sdma RX buffer pointers must be 8 byte aligned 62 */ 63 #define GTMPSC_NTXDESC 64 64 #define GTMPSC_NRXDESC 64 65 #define GTMPSC_TXBUFSZ 16 66 #define GTMPSC_RXBUFSZ 16 67 68 typedef struct gtmpsc_polltx { 69 sdma_desc_t txdesc; 70 unsigned char txbuf[GTMPSC_TXBUFSZ]; 71 } gtmpsc_polltx_t; 72 73 typedef struct gtmpsc_pollrx { 74 sdma_desc_t rxdesc; 75 unsigned char rxbuf[GTMPSC_RXBUFSZ]; 76 } gtmpsc_pollrx_t; 77 78 typedef struct { 79 gtmpsc_polltx_t tx[GTMPSC_NTXDESC]; 80 gtmpsc_pollrx_t rx[GTMPSC_NRXDESC]; 81 } gtmpsc_poll_sdma_t; 82 83 /* Size of the Rx FIFO */ 84 #define GTMPSC_RXFIFOSZ (GTMPSC_NRXDESC * GTMPSC_RXBUFSZ * 2) 85 86 /* Flags in sc->gtmpsc_flags */ 87 #define GTMPSCF_KGDB 1 88 89 typedef struct gtmpsc_softc { 90 struct device gtmpsc_dev; 91 bus_space_tag_t gtmpsc_memt; 92 bus_dma_tag_t gtmpsc_dmat; 93 struct gt_softc *gtmpsc_gt; /* parent GT-64260 */ 94 struct tty *gtmpsc_tty; /* our tty */ 95 int gtmpsc_unit; 96 unsigned int gtmpsc_flags; 97 unsigned int gtmpsc_baud_rate; 98 bus_dma_segment_t gtmpsc_dma_segs[1]; 99 gtmpsc_poll_sdma_t *gtmpsc_poll_sdmapage; 100 unsigned int gtmpsc_poll_txix; /* "current" tx xfer index */ 101 unsigned int gtmpsc_poll_rxix; /* "current" rx xfer index */ 102 unsigned int gtmpsc_cx; /* data index in gtmpsc_rxbuf */ 103 unsigned int gtmpsc_nc; /* data count in gtmpsc_rxbuf */ 104 unsigned int gtmpsc_chr2; /* soft copy of CHR2 */ 105 unsigned int gtmpsc_chr3; /* soft copy of CHR3 */ 106 unsigned int gtmpsc_brg_bcr; /* soft copy of BRG_BCR */ 107 volatile u_char sc_heldchange; /* new params wait for output */ 108 volatile u_char sc_tx_busy; 109 volatile u_char sc_tx_done; 110 volatile u_char sc_tx_stopped; 111 u_char *sc_tba; /* Tx buf ptr */ 112 u_int sc_tbc; /* Tx buf cnt */ 113 u_int sc_heldtbc; 114 unsigned char gtmpsc_rxbuf[GTMPSC_RXBUFSZ]; /* polling read buffer */ 115 volatile unsigned int gtmpsc_rxfifo_navail; 116 /* available count in fifo */ 117 unsigned int gtmpsc_rxfifo_putix; /* put index in fifo */ 118 unsigned int gtmpsc_rxfifo_getix; /* get index in fifo */ 119 unsigned char gtmpsc_rxfifo[GTMPSC_RXFIFOSZ]; 120 unsigned int cnt_rx_from_sdma; 121 unsigned int cnt_rx_to_fifo; 122 unsigned int cnt_rx_from_fifo; 123 unsigned int cnt_tx_from_ldisc; 124 unsigned int cnt_tx_to_sdma; 125 } gtmpsc_softc_t; 126 127 /* Macros to clear/set/test flags. */ 128 #define SET(t, f) (t) |= (f) 129 #define CLR(t, f) (t) &= ~(f) 130 #define ISSET(t, f) ((t) & (f)) 131 132 /* Make receiver interrupt 8 times a second */ 133 #define GTMPSC_MAXIDLE(baudrate) ((baudrate) / (10 * 8)) /* There are 10 bits 134 in a frame */ 135
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