FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/comvar.h
1 /* comvar.h,v 1.55.8.3 2008/01/09 01:52:50 matt Exp */
2
3 /*
4 * Copyright (c) 1996 Christopher G. Demetriou. 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 Christopher G. Demetriou
17 * for the NetBSD Project.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "rnd.h"
34 #include "opt_multiprocessor.h"
35 #include "opt_lockdebug.h"
36 #include "opt_com.h"
37 #include "opt_kgdb.h"
38
39 #if NRND > 0 && defined(RND_COM)
40 #include <sys/rnd.h>
41 #endif
42
43 #include <sys/callout.h>
44 #include <sys/timepps.h>
45 #include <sys/mutex.h>
46
47 #include <dev/ic/comreg.h> /* for COM_NPORTS */
48
49 struct com_regs;
50
51 int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
52 int comcnattach1(struct com_regs *, int, int, int, tcflag_t);
53
54 #ifdef KGDB
55 int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
56 int com_kgdb_attach1(struct com_regs *, int, int, int, tcflag_t);
57 #endif
58
59 int com_is_console(bus_space_tag_t, bus_addr_t, bus_space_handle_t *);
60
61 /* Hardware flag masks */
62 #define COM_HW_NOIEN 0x01
63 #define COM_HW_FIFO 0x02
64 /* 0x04 free for use */
65 #define COM_HW_FLOW 0x08
66 #define COM_HW_DEV_OK 0x20
67 #define COM_HW_CONSOLE 0x40
68 #define COM_HW_KGDB 0x80
69 #define COM_HW_TXFIFO_DISABLE 0x100
70 #define COM_HW_NO_TXPRELOAD 0x200
71
72 /* Buffer size for character buffer */
73 #define COM_RING_SIZE 2048
74
75 #ifdef COM_REGMAP
76 #define COM_REG_RXDATA 0
77 #define COM_REG_TXDATA 1
78 #define COM_REG_DLBL 2
79 #define COM_REG_DLBH 3
80 #define COM_REG_IER 4
81 #define COM_REG_IIR 5
82 #define COM_REG_FIFO 6
83 #define COM_REG_TCR 6
84 #define COM_REG_EFR 7
85 #define COM_REG_TLR 7
86 #define COM_REG_LCR 8
87 #define COM_REG_MDR1 8
88 #define COM_REG_MCR 9
89 #define COM_REG_LSR 10
90 #define COM_REG_MSR 11
91
92 struct com_regs {
93 bus_space_tag_t cr_iot;
94 bus_space_handle_t cr_ioh;
95 bus_addr_t cr_iobase;
96 bus_size_t cr_nports;
97 bus_size_t cr_map[16];
98 };
99
100 extern const bus_size_t com_std_map[16];
101
102 #define COM_INIT_REGS(regs, tag, hdl, addr) \
103 do { \
104 regs.cr_iot = tag; \
105 regs.cr_ioh = hdl; \
106 regs.cr_iobase = addr; \
107 regs.cr_nports = COM_NPORTS; \
108 memcpy(regs.cr_map, com_std_map, sizeof (regs.cr_map)); \
109 } while (0)
110
111 #else
112 #define COM_REG_RXDATA com_data
113 #define COM_REG_TXDATA com_data
114 #define COM_REG_DLBL com_dlbl
115 #define COM_REG_DLBH com_dlbh
116 #define COM_REG_IER com_ier
117 #define COM_REG_IIR com_iir
118 #define COM_REG_FIFO com_fifo
119 #define COM_REG_EFR com_efr
120 #define COM_REG_LCR com_lctl
121 #define COM_REG_MCR com_mcr
122 #define COM_REG_LSR com_lsr
123 #define COM_REG_MSR com_msr
124 #define COM_REG_TCR com_msr
125 #define COM_REG_TLR com_scratch
126 #define COM_REG_MDR1 8
127
128 struct com_regs {
129 bus_space_tag_t cr_iot;
130 bus_space_handle_t cr_ioh;
131 bus_addr_t cr_iobase;
132 bus_size_t cr_nports;
133 };
134
135 #define COM_INIT_REGS(regs, tag, hdl, addr) \
136 do { \
137 regs.cr_iot = tag; \
138 regs.cr_ioh = hdl; \
139 regs.cr_iobase = addr; \
140 regs.cr_nports = COM_NPORTS; \
141 } while (0)
142
143 #endif
144
145 struct com_softc {
146 device_t sc_dev;
147 void *sc_si;
148 struct tty *sc_tty;
149
150 struct callout sc_diag_callout;
151
152 int sc_frequency;
153
154 struct com_regs sc_regs;
155 bus_space_handle_t sc_hayespioh;
156
157
158 u_int sc_overflows,
159 sc_floods,
160 sc_errors;
161
162 int sc_hwflags,
163 sc_swflags;
164 u_int sc_fifolen;
165
166 u_int sc_r_hiwat,
167 sc_r_lowat;
168 u_char *volatile sc_rbget,
169 *volatile sc_rbput;
170 volatile u_int sc_rbavail;
171 u_char *sc_rbuf,
172 *sc_ebuf;
173
174 u_char *sc_tba;
175 u_int sc_tbc,
176 sc_heldtbc;
177
178 volatile u_char sc_rx_flags,
179 #define RX_TTY_BLOCKED 0x01
180 #define RX_TTY_OVERFLOWED 0x02
181 #define RX_IBUF_BLOCKED 0x04
182 #define RX_IBUF_OVERFLOWED 0x08
183 #define RX_ANY_BLOCK 0x0f
184 sc_tx_busy,
185 sc_tx_done,
186 sc_tx_stopped,
187 sc_st_check,
188 sc_rx_ready;
189
190 volatile u_char sc_heldchange;
191 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
192 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr;
193 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
194
195 #ifdef COM_HAYESP
196 u_char sc_prescaler;
197 #endif
198
199 /*
200 * There are a great many almost-ns16550-compatible UARTs out
201 * there, which have minor differences. The type field here
202 * lets us distinguish between them.
203 */
204 int sc_type;
205 #define COM_TYPE_NORMAL 0 /* normal 16x50 */
206 #define COM_TYPE_HAYESP 1 /* Hayes ESP modem */
207 #define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */
208 #define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */
209 #define COM_TYPE_OMAP 4 /* TI OMAP processor built-in */
210 #define COM_TYPE_16550_NOERS 5 /* like a 16550, no ERS */
211
212 /* power management hooks */
213 int (*enable)(struct com_softc *);
214 void (*disable)(struct com_softc *);
215 int enabled;
216
217 struct pps_state sc_pps_state; /* pps state */
218
219 #if NRND > 0 && defined(RND_COM)
220 rndsource_element_t rnd_source;
221 #endif
222 kmutex_t sc_lock;
223 };
224
225 int comprobe1(bus_space_tag_t, bus_space_handle_t);
226 int comintr(void *);
227 void com_attach_subr(struct com_softc *);
228 int com_probe_subr(struct com_regs *);
229 int com_detach(struct device *, int);
230 bool com_resume(device_t PMF_FN_PROTO);
231 int com_activate(struct device *, enum devact);
232 bool com_cleanup(device_t, int);
233 bool com_suspend(device_t PMF_FN_PROTO);
234
235 #ifndef IPL_SERIAL
236 #define IPL_SERIAL IPL_TTY
237 #define splserial() spltty()
238 #endif
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