1 /* $NetBSD: plcomvar.h,v 1.20 2023/04/11 12:56:07 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_ARCH_EVBARM_DEV_PLCOMVAR_H_ 34 #define _SYS_ARCH_EVBARM_DEV_PLCOMVAR_H_ 35 36 #include "opt_multiprocessor.h" 37 #include "opt_lockdebug.h" 38 #include "opt_plcom.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 48 struct plcom_instance; 49 50 int plcomcnattach (struct plcom_instance *, int, int, tcflag_t, int); 51 void plcomcndetach (void); 52 53 #ifdef KGDB 54 int plcom_kgdb_attach (struct plcom_instance *, int, int, tcflag_t, int); 55 #endif 56 57 int plcom_is_console (bus_space_tag_t, bus_addr_t, bus_space_handle_t *); 58 59 /* Hardware flag masks */ 60 #define PLCOM_HW_NOIEN 0x01 61 #define PLCOM_HW_FIFO 0x02 62 #define PLCOM_HW_HAYESP 0x04 63 #define PLCOM_HW_FLOW 0x08 64 #define PLCOM_HW_DEV_OK 0x20 65 #define PLCOM_HW_CONSOLE 0x40 66 #define PLCOM_HW_KGDB 0x80 67 #define PLCOM_HW_TXFIFO_DISABLE 0x100 68 69 /* Buffer size for character buffer */ 70 #define PLCOM_RING_SIZE 2048 71 72 struct plcom_instance { 73 u_int pi_type; 74 #define PLCOM_TYPE_PL010 0 75 #define PLCOM_TYPE_PL011 1 76 #define PLCOM_TYPE_GENERIC_UART 2 /* SBSA generic uart */ 77 78 uint32_t pi_flags; /* flags for this PLCOM */ 79 #define PLC_FLAG_USE_DMA 0x0001 80 #define PLC_FLAG_32BIT_ACCESS 0x0002 81 uint32_t pi_periphid; 82 83 void *pi_cookie; 84 85 bus_space_tag_t pi_iot; 86 bus_space_handle_t pi_ioh; 87 bus_addr_t pi_iobase; 88 bus_addr_t pi_size; 89 struct plcom_registers *pi_regs; 90 }; 91 92 struct plcom_softc { 93 device_t sc_dev; 94 95 struct tty *sc_tty; 96 void *sc_si; 97 98 struct callout sc_diag_callout; 99 100 int sc_frequency; 101 102 struct plcom_instance sc_pi; 103 104 u_int sc_overflows, 105 sc_floods, 106 sc_errors; 107 108 int sc_hwflags, 109 sc_swflags; 110 u_int sc_fifolen; 111 u_int sc_burstlen; 112 113 struct timeval sc_hup_pending; 114 115 u_int sc_r_hiwat, 116 sc_r_lowat; 117 u_char *volatile sc_rbget, 118 *volatile sc_rbput; 119 volatile u_int sc_rbavail; 120 u_char *sc_rbuf, 121 *sc_ebuf; 122 123 u_char *sc_tba; 124 u_int sc_tbc, 125 sc_heldtbc; 126 127 volatile u_char sc_rx_flags, 128 #define RX_TTY_BLOCKED 0x01 129 #define RX_TTY_OVERFLOWED 0x02 130 #define RX_IBUF_BLOCKED 0x04 131 #define RX_IBUF_OVERFLOWED 0x08 132 #define RX_ANY_BLOCK 0x0f 133 sc_tx_busy, 134 sc_tx_done, 135 sc_tx_stopped, 136 sc_st_check, 137 sc_rx_ready; 138 139 volatile u_char sc_heldchange; 140 volatile uint32_t sc_cr, sc_ratel, sc_rateh, sc_imsc; 141 volatile uint32_t sc_msr, sc_msr_delta, sc_msr_mask; 142 volatile uint32_t sc_lcr, sc_ifls; 143 volatile u_char sc_mcr, sc_mcr_active; 144 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 145 u_int sc_fifo; 146 147 /* Support routine to program mcr lines for PL010, if present. */ 148 void (*sc_set_mcr)(void *, int, u_int); 149 void *sc_set_mcr_arg; 150 151 /* power management hooks */ 152 int (*enable) (struct plcom_softc *); 153 void (*disable) (struct plcom_softc *); 154 int enabled; 155 156 /* PPS signal on DCD, with or without inkernel clock disciplining */ 157 u_char sc_ppsmask; /* pps signal mask */ 158 u_char sc_ppsassert; /* pps leading edge */ 159 u_char sc_ppsclear; /* pps trailing edge */ 160 pps_info_t ppsinfo; 161 pps_params_t ppsparam; 162 163 #ifdef RND_COM 164 krndsource_t rnd_source; 165 #endif 166 kmutex_t sc_lock; 167 }; 168 169 #if 0 170 int plcomprobe1 (bus_space_tag_t, bus_space_handle_t); 171 #endif 172 int plcomintr (void *); 173 void plcom_attach_subr (struct plcom_softc *); 174 int plcom_detach (device_t, int); 175 int plcom_activate (device_t, enum devact); 176 177 #endif /* _SYS_ARCH_EVBARM_DEV_PLCOMVAR_H_ */ 178
Indexes created Sun Sep 21 16:09:51 GMT 2025