comvar.h revision 1.89
1 /* $NetBSD: comvar.h,v 1.89 2018/12/08 17:46:13 thorpej 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 "opt_multiprocessor.h" 34 #include "opt_lockdebug.h" 35 #include "opt_com.h" 36 #include "opt_kgdb.h" 37 38 #ifdef RND_COM 39 #include <sys/rndsource.h> 40 #endif 41 42 #include <sys/callout.h> 43 #include <sys/timepps.h> 44 #include <sys/mutex.h> 45 #include <sys/device.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 #define COM_HW_AFE 0x400 72 #define COM_HW_POLL 0x800 73 74 /* Buffer size for character buffer */ 75 #ifndef COM_RING_SIZE 76 #define COM_RING_SIZE 2048 77 #endif 78 79 #ifdef COM_REGMAP 80 #define COM_REG_RXDATA 0 81 #define COM_REG_TXDATA 1 82 #define COM_REG_DLBL 2 83 #define COM_REG_DLBH 3 84 #define COM_REG_IER 4 85 #define COM_REG_IIR 5 86 #define COM_REG_FIFO 6 87 #define COM_REG_TCR 6 88 #define COM_REG_EFR 7 89 #define COM_REG_TLR 7 90 #define COM_REG_LCR 8 91 #define COM_REG_MDR1 8 92 #define COM_REG_MCR 9 93 #define COM_REG_LSR 10 94 #define COM_REG_MSR 11 95 #define COM_REG_USR 31 /* 16750/DW APB */ 96 #define COM_REG_TFL com_tfl /* DW APB */ 97 #define COM_REG_RFL com_rfl /* DW APB */ 98 #define COM_REG_HALT com_halt /* DW APB */ 99 100 struct com_regs { 101 bus_space_tag_t cr_iot; 102 bus_space_handle_t cr_ioh; 103 bus_addr_t cr_iobase; 104 bus_size_t cr_nports; 105 bus_size_t cr_map[42]; 106 }; 107 #else /* ! COM_REGMAP */ 108 #define COM_REG_RXDATA com_data 109 #define COM_REG_TXDATA com_data 110 #define COM_REG_DLBL com_dlbl 111 #define COM_REG_DLBH com_dlbh 112 #define COM_REG_IER com_ier 113 #define COM_REG_IIR com_iir 114 #define COM_REG_FIFO com_fifo 115 #define COM_REG_EFR com_efr 116 #define COM_REG_LCR com_lctl 117 #define COM_REG_MCR com_mcr 118 #define COM_REG_LSR com_lsr 119 #define COM_REG_MSR com_msr 120 #define COM_REG_TCR com_msr 121 #define COM_REG_TLR com_scratch 122 #define COM_REG_MDR1 8 123 #define COM_REG_USR com_usr /* 16750/DW APB */ 124 #define COM_REG_TFL com_tfl /* DW APB */ 125 #define COM_REG_RFL com_rfl /* DW APB */ 126 #define COM_REG_HALT com_halt /* DW APB */ 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 #endif /* COM_REGMAP */ 136 137 void com_init_regs(struct com_regs *, bus_space_tag_t, bus_space_handle_t, 138 bus_addr_t); 139 140 struct comcons_info { 141 struct com_regs regs; 142 int rate; 143 int frequency; 144 int type; 145 tcflag_t cflag; 146 }; 147 148 struct com_softc { 149 device_t sc_dev; 150 void *sc_si; 151 struct tty *sc_tty; 152 153 callout_t sc_diag_callout; 154 callout_t sc_poll_callout; 155 156 int sc_frequency; 157 158 struct com_regs sc_regs; 159 bus_space_handle_t sc_hayespioh; 160 161 162 u_int sc_overflows, 163 sc_floods, 164 sc_errors; 165 166 int sc_hwflags, 167 sc_swflags; 168 u_int sc_fifolen; 169 170 u_int sc_r_hiwat, 171 sc_r_lowat; 172 u_char *volatile sc_rbget, 173 *volatile sc_rbput; 174 volatile u_int sc_rbavail; 175 u_char *sc_rbuf, 176 *sc_ebuf; 177 178 u_char *sc_tba; 179 u_int sc_tbc, 180 sc_heldtbc; 181 182 volatile u_char sc_rx_flags, 183 #define RX_TTY_BLOCKED 0x01 184 #define RX_TTY_OVERFLOWED 0x02 185 #define RX_IBUF_BLOCKED 0x04 186 #define RX_IBUF_OVERFLOWED 0x08 187 #define RX_ANY_BLOCK 0x0f 188 sc_tx_busy, 189 sc_tx_done, 190 sc_tx_stopped, 191 sc_st_check, 192 sc_rx_ready; 193 194 volatile u_char sc_heldchange; 195 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 196 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 197 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 198 199 u_char sc_prescaler; /* for COM_TYPE_HAYESP */ 200 201 /* 202 * There are a great many almost-ns16550-compatible UARTs out 203 * there, which have minor differences. The type field here 204 * lets us distinguish between them. 205 */ 206 int sc_type; 207 #define COM_TYPE_NORMAL 0 /* normal 16x50 */ 208 #define COM_TYPE_HAYESP 1 /* Hayes ESP modem */ 209 #define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */ 210 #define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */ 211 #define COM_TYPE_OMAP 4 /* TI OMAP processor built-in */ 212 #define COM_TYPE_16550_NOERS 5 /* like a 16550, no ERS */ 213 #define COM_TYPE_INGENIC 6 /* JZ4780 built-in */ 214 #define COM_TYPE_TEGRA 7 /* NVIDIA Tegra built-in */ 215 #define COM_TYPE_BCMAUXUART 8 /* BCM2835 AUX UART */ 216 #define COM_TYPE_16650 9 217 #define COM_TYPE_16750 10 218 #define COM_TYPE_DW_APB 11 /* DesignWare APB UART */ 219 220 /* power management hooks */ 221 int (*enable)(struct com_softc *); 222 void (*disable)(struct com_softc *); 223 int enabled; 224 225 /* XXXX: vendor workaround functions */ 226 int (*sc_vendor_workaround)(struct com_softc *); 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 Fri Sep 26 20:09:58 GMT 2025