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
compute_cdv(unsigned int baud)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