zynq7000_uart.c revision 1.1.10.2
1 1.1.10.2 martin /* $NetBSD: zynq7000_uart.c,v 1.1.10.2 2020/04/13 08:03:38 martin Exp $ */ 2 1.1.10.2 martin 3 1.1.10.2 martin /*- 4 1.1.10.2 martin * Copyright (c) 2015 Genetec Corporation. All rights reserved. 5 1.1.10.2 martin * Written by Hashimoto Kenichi for Genetec Corporation. 6 1.1.10.2 martin * 7 1.1.10.2 martin * Redistribution and use in source and binary forms, with or without 8 1.1.10.2 martin * modification, are permitted provided that the following conditions 9 1.1.10.2 martin * are met: 10 1.1.10.2 martin * 1. Redistributions of source code must retain the above copyright 11 1.1.10.2 martin * notice, this list of conditions and the following disclaimer. 12 1.1.10.2 martin * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.10.2 martin * notice, this list of conditions and the following disclaimer in the 14 1.1.10.2 martin * documentation and/or other materials provided with the distribution. 15 1.1.10.2 martin * 16 1.1.10.2 martin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.1.10.2 martin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.1.10.2 martin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.1.10.2 martin * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.1.10.2 martin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.1.10.2 martin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.1.10.2 martin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.1.10.2 martin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.1.10.2 martin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.1.10.2 martin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.1.10.2 martin * POSSIBILITY OF SUCH DAMAGE. 27 1.1.10.2 martin */ 28 1.1.10.2 martin 29 1.1.10.2 martin #include <sys/cdefs.h> 30 1.1.10.2 martin __KERNEL_RCSID(0, "$NetBSD: zynq7000_uart.c,v 1.1.10.2 2020/04/13 08:03:38 martin Exp $"); 31 1.1.10.2 martin 32 1.1.10.2 martin #include "opt_soc.h" 33 1.1.10.2 martin #include "opt_console.h" 34 1.1.10.2 martin 35 1.1.10.2 martin #include <sys/param.h> 36 1.1.10.2 martin #include <sys/bus.h> 37 1.1.10.2 martin #include <sys/device.h> 38 1.1.10.2 martin 39 1.1.10.2 martin #include <arm/xilinx/zynq_uartreg.h> 40 1.1.10.2 martin #include <arm/xilinx/zynq_uartvar.h> 41 1.1.10.2 martin 42 1.1.10.2 martin #include <dev/fdt/fdtvar.h> 43 1.1.10.2 martin 44 1.1.10.2 martin static const char * compatible[] = { 45 1.1.10.2 martin "xlnx,xuartps", 46 1.1.10.2 martin "cdns,uart-r1p8", 47 1.1.10.2 martin NULL 48 1.1.10.2 martin }; 49 1.1.10.2 martin 50 1.1.10.2 martin int 51 1.1.10.2 martin zynquart_match(device_t parent, struct cfdata *cf, void *aux) 52 1.1.10.2 martin { 53 1.1.10.2 martin struct fdt_attach_args * const faa = aux; 54 1.1.10.2 martin 55 1.1.10.2 martin return of_match_compatible(faa->faa_phandle, compatible); 56 1.1.10.2 martin } 57 1.1.10.2 martin 58 1.1.10.2 martin void 59 1.1.10.2 martin zynquart_attach(device_t parent, device_t self, void *aux) 60 1.1.10.2 martin { 61 1.1.10.2 martin struct fdt_attach_args * faa = aux; 62 1.1.10.2 martin const int phandle = faa->faa_phandle; 63 1.1.10.2 martin char intrstr[128]; 64 1.1.10.2 martin bus_addr_t addr; 65 1.1.10.2 martin bus_size_t size; 66 1.1.10.2 martin 67 1.1.10.2 martin if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 68 1.1.10.2 martin aprint_error(": couldn't get registers\n"); 69 1.1.10.2 martin return; 70 1.1.10.2 martin } 71 1.1.10.2 martin 72 1.1.10.2 martin if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 73 1.1.10.2 martin aprint_error(": failed to decode interrupt\n"); 74 1.1.10.2 martin return; 75 1.1.10.2 martin } 76 1.1.10.2 martin 77 1.1.10.2 martin if (fdtbus_intr_establish(phandle, 0, IPL_SERIAL, IST_LEVEL, 78 1.1.10.2 martin zynquartintr, device_private(self)) == NULL) { 79 1.1.10.2 martin aprint_error_dev(self, "failed to establish interrupt on %s\n", intrstr); 80 1.1.10.2 martin return; 81 1.1.10.2 martin } 82 1.1.10.2 martin aprint_normal_dev(self, "interrupting on %s\n", intrstr); 83 1.1.10.2 martin 84 1.1.10.2 martin zynquart_attach_common(parent, self, faa->faa_bst, addr, size, 0); 85 1.1.10.2 martin } 86 1.1.10.2 martin 87 1.1.10.2 martin /* 88 1.1.10.2 martin * Console support 89 1.1.10.2 martin */ 90 1.1.10.2 martin 91 1.1.10.2 martin static int 92 1.1.10.2 martin zynq_uart_console_match(int phandle) 93 1.1.10.2 martin { 94 1.1.10.2 martin return of_match_compatible(phandle, compatible); 95 1.1.10.2 martin } 96 1.1.10.2 martin 97 1.1.10.2 martin static void 98 1.1.10.2 martin zynq_uart_console_consinit(struct fdt_attach_args *faa, u_int uart_freq) 99 1.1.10.2 martin { 100 1.1.10.2 martin const int phandle = faa->faa_phandle; 101 1.1.10.2 martin bus_space_tag_t bst = faa->faa_bst; 102 1.1.10.2 martin bus_addr_t addr; 103 1.1.10.2 martin tcflag_t flags; 104 1.1.10.2 martin int speed; 105 1.1.10.2 martin 106 1.1.10.2 martin fdtbus_get_reg(phandle, 0, &addr, NULL); 107 1.1.10.2 martin speed = fdtbus_get_stdout_speed(); 108 1.1.10.2 martin if (speed < 0) 109 1.1.10.2 martin speed = 115200; /* default */ 110 1.1.10.2 martin flags = fdtbus_get_stdout_flags(); 111 1.1.10.2 martin 112 1.1.10.2 martin if (zynquart_cons_attach(bst, addr, speed, flags)) 113 1.1.10.2 martin panic("Cannot initialize zynq uart console"); 114 1.1.10.2 martin } 115 1.1.10.2 martin 116 1.1.10.2 martin static const struct fdt_console zynq_uart_console = { 117 1.1.10.2 martin .match = zynq_uart_console_match, 118 1.1.10.2 martin .consinit = zynq_uart_console_consinit, 119 1.1.10.2 martin }; 120 1.1.10.2 martin 121 1.1.10.2 martin FDT_CONSOLE(zynq_uart, &zynq_uart_console); 122
Indexes created Thu Oct 02 07:10:07 GMT 2025