1 /* $NetBSD: comvar.h,v 1.98 2022/10/08 07:27:03 riastradh 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 #ifndef _SYS_DEV_IC_COMVAR_H_ 34 #define _SYS_DEV_IC_COMVAR_H_ 35 36 #include "opt_multiprocessor.h" 37 #include "opt_lockdebug.h" 38 #include "opt_com.h" 39 #include "opt_kgdb.h" 40 41 #ifdef RND_COM 42 #include <sys/rndsource.h> 43 #endif 44 45 #include <sys/callout.h> 46 #include <sys/timepps.h> 47 #include <sys/mutex.h> 48 #include <sys/device.h> 49 50 #include <dev/ic/comreg.h> /* for COM_NPORTS */ 51 52 struct com_regs; 53 54 int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 55 int comcnattach1(struct com_regs *, int, int, int, tcflag_t); 56 57 #ifdef KGDB 58 int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t); 59 int com_kgdb_attach1(struct com_regs *, int, int, int, tcflag_t); 60 #endif 61 62 int com_is_console(bus_space_tag_t, bus_addr_t, bus_space_handle_t *); 63 64 /* Hardware flag masks */ 65 #define COM_HW_NOIEN 0x01 66 #define COM_HW_FIFO 0x02 67 #define COM_HW_BROKEN_ETXRDY 0x04 68 #define COM_HW_FLOW 0x08 69 #define COM_HW_DEV_OK 0x20 70 #define COM_HW_CONSOLE 0x40 71 #define COM_HW_KGDB 0x80 72 #define COM_HW_TXFIFO_DISABLE 0x100 73 #define COM_HW_NO_TXPRELOAD 0x200 74 #define COM_HW_AFE 0x400 75 76 /* Buffer size for character buffer */ 77 #ifndef COM_RING_SIZE 78 #define COM_RING_SIZE 2048 79 #endif 80 81 #define COM_REG_RXDATA 0 82 #define COM_REG_TXDATA 1 83 #define COM_REG_DLBL 2 84 #define COM_REG_DLBH 3 85 #define COM_REG_IER 4 86 #define COM_REG_IIR 5 87 #define COM_REG_FIFO 6 88 #define COM_REG_TCR 7 89 #define COM_REG_EFR 8 90 #define COM_REG_TLR 9 91 #define COM_REG_LCR 10 92 #define COM_REG_MCR 11 93 #define COM_REG_LSR 12 94 #define COM_REG_MSR 13 95 #define COM_REG_MDR1 14 /* TI OMAP */ 96 #define COM_REG_USR 15 /* 16750/DW APB */ 97 #define COM_REG_TFL 16 /* DW APB */ 98 #define COM_REG_RFL 17 /* DW APB */ 99 #define COM_REG_HALT 18 /* DW APB */ 100 101 #define COM_REGMAP_NENTRIES 19 102 103 struct com_regs { 104 bus_space_tag_t cr_iot; 105 bus_space_handle_t cr_ioh; 106 bus_addr_t cr_iobase; 107 bus_size_t cr_nports; 108 bus_size_t cr_map[COM_REGMAP_NENTRIES]; 109 uint8_t (*cr_read)(struct com_regs *, u_int); 110 void (*cr_write)(struct com_regs *, u_int, uint8_t); 111 void (*cr_write_multi)(struct com_regs *, u_int, 112 const uint8_t *, 113 bus_size_t); 114 115 }; 116 117 void com_init_regs(struct com_regs *, bus_space_tag_t, bus_space_handle_t, 118 bus_addr_t); 119 void com_init_regs_stride(struct com_regs *, bus_space_tag_t, 120 bus_space_handle_t, bus_addr_t, u_int); 121 void com_init_regs_stride_width(struct com_regs *, bus_space_tag_t, 122 bus_space_handle_t, bus_addr_t, u_int, u_int); 123 124 struct comcons_info { 125 struct com_regs regs; 126 int rate; 127 int frequency; 128 int type; 129 tcflag_t cflag; 130 }; 131 132 struct com_softc { 133 device_t sc_dev; 134 void *sc_si; 135 struct tty *sc_tty; 136 137 callout_t sc_diag_callout; 138 callout_t sc_poll_callout; 139 struct timeval sc_hup_pending; 140 141 int sc_frequency; 142 143 struct com_regs sc_regs; 144 bus_space_handle_t sc_hayespioh; 145 146 147 u_int sc_overflows, 148 sc_floods, 149 sc_errors; 150 151 int sc_hwflags, 152 sc_swflags; 153 u_int sc_fifolen; 154 155 u_int sc_r_hiwat, 156 sc_r_lowat; 157 u_char *volatile sc_rbget, 158 *volatile sc_rbput; 159 volatile u_int sc_rbavail; 160 u_char *sc_rbuf, 161 *sc_ebuf; 162 163 u_char *sc_tba; 164 u_int sc_tbc, 165 sc_heldtbc; 166 167 volatile u_char sc_rx_flags, 168 #define RX_TTY_BLOCKED 0x01 169 #define RX_TTY_OVERFLOWED 0x02 170 #define RX_IBUF_BLOCKED 0x04 171 #define RX_IBUF_OVERFLOWED 0x08 172 #define RX_ANY_BLOCK 0x0f 173 sc_tx_busy, 174 sc_tx_done, 175 sc_tx_stopped, 176 sc_st_check, 177 sc_rx_ready; 178 179 volatile u_char sc_heldchange; 180 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 181 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 182 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 183 184 u_char sc_prescaler; /* for COM_TYPE_HAYESP */ 185 186 /* 187 * There are a great many almost-ns16550-compatible UARTs out 188 * there, which have minor differences. The type field here 189 * lets us distinguish between them. 190 */ 191 int sc_type; 192 #define COM_TYPE_NORMAL 0 /* normal 16x50 */ 193 #define COM_TYPE_HAYESP 1 /* Hayes ESP modem */ 194 #define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */ 195 #define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */ 196 #define COM_TYPE_OMAP 4 /* TI OMAP processor built-in */ 197 #define COM_TYPE_16550_NOERS 5 /* like a 16550, no ERS */ 198 #define COM_TYPE_INGENIC 6 /* JZ4780 built-in */ 199 #define COM_TYPE_TEGRA 7 /* NVIDIA Tegra built-in */ 200 #define COM_TYPE_BCMAUXUART 8 /* BCM2835 AUX UART */ 201 #define COM_TYPE_16650 9 202 #define COM_TYPE_16750 10 203 #define COM_TYPE_DW_APB 11 /* DesignWare APB UART */ 204 205 int sc_poll_ticks; 206 207 /* power management hooks */ 208 int (*enable)(struct com_softc *); 209 void (*disable)(struct com_softc *); 210 int enabled; 211 212 struct pps_state sc_pps_state; /* pps state */ 213 214 #ifdef RND_COM 215 krndsource_t rnd_source; 216 #endif 217 kmutex_t sc_lock; 218 }; 219 220 int comprobe1(bus_space_tag_t, bus_space_handle_t); 221 int comintr(void *); 222 void com_attach_subr(struct com_softc *); 223 int com_probe_subr(struct com_regs *); 224 int com_detach(device_t, int); 225 bool com_resume(device_t, const pmf_qual_t *); 226 bool com_cleanup(device_t, int); 227 bool com_suspend(device_t, const pmf_qual_t *); 228 229 #ifndef IPL_SERIAL 230 #define IPL_SERIAL IPL_TTY 231 #define splserial() spltty() 232 #endif 233 234 #endif /* _SYS_DEV_IC_COMVAR_H_ */ 235
Indexes created Sun Sep 21 16:09:51 GMT 2025