comvar.h revision 1.60
1 /* $NetBSD: comvar.h,v 1.60 2008/02/29 07:02:05 dyoung 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_EFR 7 84 #define COM_REG_LCR 8 85 #define COM_REG_MCR 9 86 #define COM_REG_LSR 10 87 #define COM_REG_MSR 11 88 89 struct com_regs { 90 bus_space_tag_t cr_iot; 91 bus_space_handle_t cr_ioh; 92 bus_addr_t cr_iobase; 93 bus_size_t cr_nports; 94 bus_size_t cr_map[16]; 95 }; 96 97 extern const bus_size_t com_std_map[16]; 98 99 #define COM_INIT_REGS(regs, tag, hdl, addr) \ 100 do { \ 101 regs.cr_iot = tag; \ 102 regs.cr_ioh = hdl; \ 103 regs.cr_iobase = addr; \ 104 regs.cr_nports = COM_NPORTS; \ 105 memcpy(regs.cr_map, com_std_map, sizeof (regs.cr_map)); \ 106 } while (0) 107 108 #else 109 #define COM_REG_RXDATA com_data 110 #define COM_REG_TXDATA com_data 111 #define COM_REG_DLBL com_dlbl 112 #define COM_REG_DLBH com_dlbh 113 #define COM_REG_IER com_ier 114 #define COM_REG_IIR com_iir 115 #define COM_REG_FIFO com_fifo 116 #define COM_REG_EFR com_efr 117 #define COM_REG_LCR com_lctl 118 #define COM_REG_MCR com_mcr 119 #define COM_REG_LSR com_lsr 120 #define COM_REG_MSR com_msr 121 122 struct com_regs { 123 bus_space_tag_t cr_iot; 124 bus_space_handle_t cr_ioh; 125 bus_addr_t cr_iobase; 126 bus_size_t cr_nports; 127 }; 128 129 #define COM_INIT_REGS(regs, tag, hdl, addr) \ 130 do { \ 131 regs.cr_iot = tag; \ 132 regs.cr_ioh = hdl; \ 133 regs.cr_iobase = addr; \ 134 regs.cr_nports = COM_NPORTS; \ 135 } while (0) 136 137 #endif 138 139 struct com_softc { 140 struct device sc_dev; 141 void *sc_si; 142 struct tty *sc_tty; 143 144 struct callout sc_diag_callout; 145 146 int sc_frequency; 147 148 struct com_regs sc_regs; 149 bus_space_handle_t sc_hayespioh; 150 151 152 u_int sc_overflows, 153 sc_floods, 154 sc_errors; 155 156 int sc_hwflags, 157 sc_swflags; 158 u_int sc_fifolen; 159 160 u_int sc_r_hiwat, 161 sc_r_lowat; 162 u_char *volatile sc_rbget, 163 *volatile sc_rbput; 164 volatile u_int sc_rbavail; 165 u_char *sc_rbuf, 166 *sc_ebuf; 167 168 u_char *sc_tba; 169 u_int sc_tbc, 170 sc_heldtbc; 171 172 volatile u_char sc_rx_flags, 173 #define RX_TTY_BLOCKED 0x01 174 #define RX_TTY_OVERFLOWED 0x02 175 #define RX_IBUF_BLOCKED 0x04 176 #define RX_IBUF_OVERFLOWED 0x08 177 #define RX_ANY_BLOCK 0x0f 178 sc_tx_busy, 179 sc_tx_done, 180 sc_tx_stopped, 181 sc_st_check, 182 sc_rx_ready; 183 184 volatile u_char sc_heldchange; 185 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 186 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 187 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 188 189 #ifdef COM_HAYESP 190 u_char sc_prescaler; 191 #endif 192 193 /* 194 * There are a great many almost-ns16550-compatible UARTs out 195 * there, which have minor differences. The type field here 196 * lets us distinguish between them. 197 */ 198 int sc_type; 199 #define COM_TYPE_NORMAL 0 /* normal 16x50 */ 200 #define COM_TYPE_HAYESP 1 /* Hayes ESP modem */ 201 #define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */ 202 #define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */ 203 204 /* power management hooks */ 205 int (*enable)(struct com_softc *); 206 void (*disable)(struct com_softc *); 207 int enabled; 208 209 struct pps_state sc_pps_state; /* pps state */ 210 211 #if NRND > 0 && defined(RND_COM) 212 rndsource_element_t rnd_source; 213 #endif 214 kmutex_t sc_lock; 215 }; 216 217 int comprobe1(bus_space_tag_t, bus_space_handle_t); 218 int comintr(void *); 219 void com_attach_subr(struct com_softc *); 220 int com_probe_subr(struct com_regs *); 221 int com_detach(struct device *, int); 222 bool com_resume(device_t PMF_FN_PROTO); 223 int com_activate(struct device *, enum devact); 224 bool com_cleanup(device_t, int); 225 bool com_suspend(device_t PMF_FN_PROTO); 226 227 #ifndef IPL_SERIAL 228 #define IPL_SERIAL IPL_TTY 229 #define splserial() spltty() 230 #endif 231
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