138 lines
5.2 KiB
C
138 lines
5.2 KiB
C
/* $NetBSD: gtmpscvar.h,v 1.7 2006/03/06 08:13:58 he Exp $ */
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/*
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* Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Allegro Networks, Inc., and Wasabi Systems, Inc.
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* 4. The name of Allegro Networks, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* 5. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND
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* WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC.
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* gtmpscvar.h - includes for gtmpsctty GT-64260 UART-mode serial driver
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*
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* creation Mon Apr 9 19:54:33 PDT 2001 cliff
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*/
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#ifndef _DEV_MARVELL_GTMPSCVAR_H
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#define _DEV_MARVELL_GTMPSCVAR_H
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#include "opt_marvell.h"
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#ifndef GT_MPSC_DEFAULT_BAUD_RATE
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#define GT_MPSC_DEFAULT_BAUD_RATE 115200
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#endif
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#define GTMPSC_CLOCK_DIVIDER 8
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#define GTMPSC_MMCR_HI_TCDV_DEFAULT GTMPSC_MMCR_HI_TCDV_8X
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#define GTMPSC_MMCR_HI_RCDV_DEFAULT GTMPSC_MMCR_HI_RCDV_8X
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#define BRG_BCR_CDV_MAX 0xffff
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/*
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* gtmpsc_poll_dmapage_t - used for MPSC getchar/putchar polled console
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*
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* sdma descriptors must be 16 byte aligned
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* sdma RX buffer pointers must be 8 byte aligned
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*/
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#define GTMPSC_NTXDESC 64
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#define GTMPSC_NRXDESC 64
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#define GTMPSC_TXBUFSZ 16
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#define GTMPSC_RXBUFSZ 16
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typedef struct gtmpsc_polltx {
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sdma_desc_t txdesc;
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unsigned char txbuf[GTMPSC_TXBUFSZ];
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} gtmpsc_polltx_t;
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typedef struct gtmpsc_pollrx {
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sdma_desc_t rxdesc;
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unsigned char rxbuf[GTMPSC_RXBUFSZ];
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} gtmpsc_pollrx_t;
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typedef struct {
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gtmpsc_polltx_t tx[GTMPSC_NTXDESC];
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gtmpsc_pollrx_t rx[GTMPSC_NRXDESC];
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} gtmpsc_poll_sdma_t;
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/* Size of the Rx FIFO */
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#define GTMPSC_RXFIFOSZ (GTMPSC_NRXDESC * GTMPSC_RXBUFSZ * 2)
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/* Flags in sc->gtmpsc_flags */
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#define GTMPSCF_KGDB 1
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typedef struct gtmpsc_softc {
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struct device gtmpsc_dev;
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bus_space_tag_t gtmpsc_memt;
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bus_space_handle_t gtmpsc_memh;
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bus_dma_tag_t gtmpsc_dmat;
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void *sc_si; /* softintr cookie */
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struct tty *gtmpsc_tty; /* our tty */
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int gtmpsc_unit;
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unsigned int gtmpsc_flags;
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unsigned int gtmpsc_baud_rate;
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bus_dma_segment_t gtmpsc_dma_segs[1];
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bus_dmamap_t gtmpsc_dma_map;
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gtmpsc_poll_sdma_t *gtmpsc_poll_sdmapage;
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unsigned int gtmpsc_poll_txix; /* "current" tx xfer index */
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unsigned int gtmpsc_poll_rxix; /* "current" rx xfer index */
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unsigned int gtmpsc_cx; /* data index in gtmpsc_rxbuf */
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unsigned int gtmpsc_nc; /* data count in gtmpsc_rxbuf */
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unsigned int gtmpsc_chr2; /* soft copy of CHR2 */
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unsigned int gtmpsc_chr3; /* soft copy of CHR3 */
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unsigned int gtmpsc_brg_bcr; /* soft copy of BRG_BCR */
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volatile u_char sc_heldchange; /* new params wait for output */
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volatile u_char sc_tx_busy;
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volatile u_char sc_tx_done;
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volatile u_char sc_tx_stopped;
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u_char *sc_tba; /* Tx buf ptr */
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u_int sc_tbc; /* Tx buf cnt */
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u_int sc_heldtbc;
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unsigned char gtmpsc_rxbuf[GTMPSC_RXBUFSZ]; /* polling read buffer */
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volatile unsigned int gtmpsc_rxfifo_navail;
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/* available count in fifo */
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unsigned int gtmpsc_rxfifo_putix; /* put index in fifo */
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unsigned int gtmpsc_rxfifo_getix; /* get index in fifo */
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unsigned char gtmpsc_rxfifo[GTMPSC_RXFIFOSZ];
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unsigned int cnt_rx_from_sdma;
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unsigned int cnt_rx_to_fifo;
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unsigned int cnt_rx_from_fifo;
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unsigned int cnt_tx_from_ldisc;
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unsigned int cnt_tx_to_sdma;
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} gtmpsc_softc_t;
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/* Make receiver interrupt 8 times a second */
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#define GTMPSC_MAXIDLE(baudrate) ((baudrate) / (10 * 8)) /* There are 10 bits
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in a frame */
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int gtmpsccnattach(bus_space_tag_t, bus_space_handle_t, int, int, tcflag_t);
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int gtmpsc_is_console(bus_space_tag_t, int);
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#endif /* _DEV_MARVELL_GTPSCVAR_H */
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