comvar.h revision 1.73
1 /* $NetBSD: comvar.h,v 1.73 2012/02/02 19:43:03 tls 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 #ifdef 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 #include <sys/device.h> 47 48 #include <dev/ic/comreg.h> /* for COM_NPORTS */ 49 50 struct com_regs; 51 52 int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 53 int comcnattach1(struct com_regs *, int, int, int, tcflag_t); 54 55 #ifdef KGDB 56 int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 57 int com_kgdb_attach1(struct com_regs *, int, int, int, tcflag_t); 58 #endif 59 60 int com_is_console(bus_space_tag_t, bus_addr_t, bus_space_handle_t *); 61 62 /* Hardware flag masks */ 63 #define COM_HW_NOIEN 0x01 64 #define COM_HW_FIFO 0x02 65 /* 0x04 free for use */ 66 #define COM_HW_FLOW 0x08 67 #define COM_HW_DEV_OK 0x20 68 #define COM_HW_CONSOLE 0x40 69 #define COM_HW_KGDB 0x80 70 #define COM_HW_TXFIFO_DISABLE 0x100 71 #define COM_HW_NO_TXPRELOAD 0x200 72 73 /* Buffer size for character buffer */ 74 #ifndef COM_RING_SIZE 75 #define COM_RING_SIZE 2048 76 #endif 77 78 #ifdef COM_REGMAP 79 #define COM_REG_RXDATA 0 80 #define COM_REG_TXDATA 1 81 #define COM_REG_DLBL 2 82 #define COM_REG_DLBH 3 83 #define COM_REG_IER 4 84 #define COM_REG_IIR 5 85 #define COM_REG_FIFO 6 86 #define COM_REG_TCR 6 87 #define COM_REG_EFR 7 88 #define COM_REG_TLR 7 89 #define COM_REG_LCR 8 90 #define COM_REG_MDR1 8 91 #define COM_REG_MCR 9 92 #define COM_REG_LSR 10 93 #define COM_REG_MSR 11 94 95 struct com_regs { 96 bus_space_tag_t cr_iot; 97 bus_space_handle_t cr_ioh; 98 bus_addr_t cr_iobase; 99 bus_size_t cr_nports; 100 bus_size_t cr_map[16]; 101 }; 102 103 extern const bus_size_t com_std_map[16]; 104 105 #define COM_INIT_REGS(regs, tag, hdl, addr) \ 106 do { \ 107 regs.cr_iot = tag; \ 108 regs.cr_ioh = hdl; \ 109 regs.cr_iobase = addr; \ 110 regs.cr_nports = COM_NPORTS; \ 111 memcpy(regs.cr_map, com_std_map, sizeof (regs.cr_map)); \ 112 } while (0) 113 114 #else 115 #define COM_REG_RXDATA com_data 116 #define COM_REG_TXDATA com_data 117 #define COM_REG_DLBL com_dlbl 118 #define COM_REG_DLBH com_dlbh 119 #define COM_REG_IER com_ier 120 #define COM_REG_IIR com_iir 121 #define COM_REG_FIFO com_fifo 122 #define COM_REG_EFR com_efr 123 #define COM_REG_LCR com_lctl 124 #define COM_REG_MCR com_mcr 125 #define COM_REG_LSR com_lsr 126 #define COM_REG_MSR com_msr 127 #define COM_REG_TCR com_msr 128 #define COM_REG_TLR com_scratch 129 #define COM_REG_MDR1 8 130 131 struct com_regs { 132 bus_space_tag_t cr_iot; 133 bus_space_handle_t cr_ioh; 134 bus_addr_t cr_iobase; 135 bus_size_t cr_nports; 136 }; 137 138 #define COM_INIT_REGS(regs, tag, hdl, addr) \ 139 do { \ 140 regs.cr_iot = tag; \ 141 regs.cr_ioh = hdl; \ 142 regs.cr_iobase = addr; \ 143 regs.cr_nports = COM_NPORTS; \ 144 } while (0) 145 146 #endif 147 148 struct comcons_info { 149 struct com_regs regs; 150 int rate; 151 int frequency; 152 int type; 153 tcflag_t cflag; 154 }; 155 156 struct com_softc { 157 device_t sc_dev; 158 void *sc_si; 159 struct tty *sc_tty; 160 161 struct callout sc_diag_callout; 162 163 int sc_frequency; 164 165 struct com_regs sc_regs; 166 bus_space_handle_t sc_hayespioh; 167 168 169 u_int sc_overflows, 170 sc_floods, 171 sc_errors; 172 173 int sc_hwflags, 174 sc_swflags; 175 u_int sc_fifolen; 176 177 u_int sc_r_hiwat, 178 sc_r_lowat; 179 u_char *volatile sc_rbget, 180 *volatile sc_rbput; 181 volatile u_int sc_rbavail; 182 u_char *sc_rbuf, 183 *sc_ebuf; 184 185 u_char *sc_tba; 186 u_int sc_tbc, 187 sc_heldtbc; 188 189 volatile u_char sc_rx_flags, 190 #define RX_TTY_BLOCKED 0x01 191 #define RX_TTY_OVERFLOWED 0x02 192 #define RX_IBUF_BLOCKED 0x04 193 #define RX_IBUF_OVERFLOWED 0x08 194 #define RX_ANY_BLOCK 0x0f 195 sc_tx_busy, 196 sc_tx_done, 197 sc_tx_stopped, 198 sc_st_check, 199 sc_rx_ready; 200 201 volatile u_char sc_heldchange; 202 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 203 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 204 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 205 206 #ifdef COM_HAYESP 207 u_char sc_prescaler; 208 #endif 209 210 /* 211 * There are a great many almost-ns16550-compatible UARTs out 212 * there, which have minor differences. The type field here 213 * lets us distinguish between them. 214 */ 215 int sc_type; 216 #define COM_TYPE_NORMAL 0 /* normal 16x50 */ 217 #define COM_TYPE_HAYESP 1 /* Hayes ESP modem */ 218 #define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */ 219 #define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */ 220 #define COM_TYPE_OMAP 4 /* TI OMAP processor built-in */ 221 #define COM_TYPE_16550_NOERS 5 /* like a 16550, no ERS */ 222 223 /* power management hooks */ 224 int (*enable)(struct com_softc *); 225 void (*disable)(struct com_softc *); 226 int enabled; 227 228 struct pps_state sc_pps_state; /* pps state */ 229 230 #ifdef RND_COM 231 krndsource_t rnd_source; 232 #endif 233 kmutex_t sc_lock; 234 }; 235 236 int comprobe1(bus_space_tag_t, bus_space_handle_t); 237 int comintr(void *); 238 void com_attach_subr(struct com_softc *); 239 int com_probe_subr(struct com_regs *); 240 int com_detach(device_t, int); 241 bool com_resume(device_t, const pmf_qual_t *); 242 bool com_cleanup(device_t, int); 243 bool com_suspend(device_t, const pmf_qual_t *); 244 245 #ifndef IPL_SERIAL 246 #define IPL_SERIAL IPL_TTY 247 #define splserial() spltty() 248 #endif 249
Indexes created Tue Sep 23 02:09:52 GMT 2025