a9ptmr_fdt.c revision 1.1.10.2
1 1.1.10.2 martin /* $NetBSD: a9ptmr_fdt.c,v 1.1.10.2 2020/04/13 08:03:34 martin Exp $ */ 2 1.1.10.2 martin 3 1.1.10.2 martin /*- 4 1.1.10.2 martin * Copyright (c) 2019 The NetBSD Foundation, Inc. 5 1.1.10.2 martin * All rights reserved. 6 1.1.10.2 martin * 7 1.1.10.2 martin * This code is derived from software contributed to The NetBSD Foundation 8 1.1.10.2 martin * by Nick Hudson 9 1.1.10.2 martin * 10 1.1.10.2 martin * Redistribution and use in source and binary forms, with or without 11 1.1.10.2 martin * modification, are permitted provided that the following conditions 12 1.1.10.2 martin * are met: 13 1.1.10.2 martin * 1. Redistributions of source code must retain the above copyright 14 1.1.10.2 martin * notice, this list of conditions and the following disclaimer. 15 1.1.10.2 martin * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.10.2 martin * notice, this list of conditions and the following disclaimer in the 17 1.1.10.2 martin * documentation and/or other materials provided with the distribution. 18 1.1.10.2 martin * 19 1.1.10.2 martin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.10.2 martin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.10.2 martin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.10.2 martin * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.10.2 martin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.10.2 martin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.10.2 martin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.10.2 martin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.10.2 martin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.10.2 martin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.10.2 martin * POSSIBILITY OF SUCH DAMAGE. 30 1.1.10.2 martin */ 31 1.1.10.2 martin 32 1.1.10.2 martin #include <sys/cdefs.h> 33 1.1.10.2 martin __KERNEL_RCSID(0, "$NetBSD: a9ptmr_fdt.c,v 1.1.10.2 2020/04/13 08:03:34 martin Exp $"); 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 38 1.1.10.2 martin #include <sys/device.h> 39 1.1.10.2 martin #include <sys/intr.h> 40 1.1.10.2 martin 41 1.1.10.2 martin #include <arm/cortex/mpcore_var.h> 42 1.1.10.2 martin #include <arm/cortex/a9ptmr_var.h> 43 1.1.10.2 martin 44 1.1.10.2 martin #include <dev/fdt/fdtvar.h> 45 1.1.10.2 martin #include <arm/fdt/arm_fdtvar.h> 46 1.1.10.2 martin 47 1.1.10.2 martin static int a9ptmr_fdt_match(device_t, cfdata_t, void *); 48 1.1.10.2 martin static void a9ptmr_fdt_attach(device_t, device_t, void *); 49 1.1.10.2 martin 50 1.1.10.2 martin static void a9ptmr_fdt_cpu_hatch(void *, struct cpu_info *); 51 1.1.10.2 martin 52 1.1.10.2 martin struct a9ptmr_fdt_softc { 53 1.1.10.2 martin device_t sc_dev; 54 1.1.10.2 martin struct clk *sc_clk; 55 1.1.10.2 martin }; 56 1.1.10.2 martin 57 1.1.10.2 martin CFATTACH_DECL_NEW(a9ptmr_fdt, sizeof(struct a9ptmr_fdt_softc), 58 1.1.10.2 martin a9ptmr_fdt_match, a9ptmr_fdt_attach, NULL, NULL); 59 1.1.10.2 martin 60 1.1.10.2 martin static int 61 1.1.10.2 martin a9ptmr_fdt_match(device_t parent, cfdata_t cf, void *aux) 62 1.1.10.2 martin { 63 1.1.10.2 martin const char * const compatible[] = { 64 1.1.10.2 martin "arm,cortex-a9-twd-timer", 65 1.1.10.2 martin "arm,cortex-a5-twd-timer", 66 1.1.10.2 martin NULL 67 1.1.10.2 martin }; 68 1.1.10.2 martin struct fdt_attach_args * const faa = aux; 69 1.1.10.2 martin 70 1.1.10.2 martin return of_compatible(faa->faa_phandle, compatible) >= 0; 71 1.1.10.2 martin } 72 1.1.10.2 martin 73 1.1.10.2 martin static void 74 1.1.10.2 martin a9ptmr_fdt_attach(device_t parent, device_t self, void *aux) 75 1.1.10.2 martin { 76 1.1.10.2 martin struct a9ptmr_fdt_softc * const sc = device_private(self); 77 1.1.10.2 martin struct fdt_attach_args * const faa = aux; 78 1.1.10.2 martin const int phandle = faa->faa_phandle; 79 1.1.10.2 martin bus_space_handle_t bsh; 80 1.1.10.2 martin 81 1.1.10.2 martin sc->sc_dev = self; 82 1.1.10.2 martin sc->sc_clk = fdtbus_clock_get_index(phandle, 0); 83 1.1.10.2 martin if (sc->sc_clk == NULL) { 84 1.1.10.2 martin aprint_error(": couldn't get clock\n"); 85 1.1.10.2 martin return; 86 1.1.10.2 martin } 87 1.1.10.2 martin if (clk_enable(sc->sc_clk) != 0) { 88 1.1.10.2 martin aprint_error(": couldn't enable clock\n"); 89 1.1.10.2 martin return; 90 1.1.10.2 martin } 91 1.1.10.2 martin 92 1.1.10.2 martin uint32_t rate = clk_get_rate(sc->sc_clk); 93 1.1.10.2 martin prop_dictionary_t dict = device_properties(self); 94 1.1.10.2 martin prop_dictionary_set_uint32(dict, "frequency", rate); 95 1.1.10.2 martin 96 1.1.10.2 martin char intrstr[128]; 97 1.1.10.2 martin if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 98 1.1.10.2 martin aprint_error(": failed to decode interrupt\n"); 99 1.1.10.2 martin return; 100 1.1.10.2 martin } 101 1.1.10.2 martin 102 1.1.10.2 martin aprint_naive("\n"); 103 1.1.10.2 martin aprint_normal("\n"); 104 1.1.10.2 martin 105 1.1.10.2 martin void *ih = fdtbus_intr_establish(phandle, 0, IPL_CLOCK, 106 1.1.10.2 martin FDT_INTR_MPSAFE, a9ptmr_intr, NULL); 107 1.1.10.2 martin if (ih == NULL) { 108 1.1.10.2 martin aprint_error_dev(self, "couldn't install interrupt handler\n"); 109 1.1.10.2 martin return; 110 1.1.10.2 martin } 111 1.1.10.2 martin aprint_normal_dev(self, "interrupting on %s\n", intrstr); 112 1.1.10.2 martin 113 1.1.10.2 martin bus_addr_t addr; 114 1.1.10.2 martin bus_size_t size; 115 1.1.10.2 martin if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 116 1.1.10.2 martin aprint_error(": couldn't get registers\n"); 117 1.1.10.2 martin return; 118 1.1.10.2 martin } 119 1.1.10.2 martin if (bus_space_map(faa->faa_bst, addr, size, 0, &bsh)) { 120 1.1.10.2 martin aprint_error(": couldn't map registers\n"); 121 1.1.10.2 martin return; 122 1.1.10.2 martin } 123 1.1.10.2 martin 124 1.1.10.2 martin struct mpcore_attach_args mpcaa = { 125 1.1.10.2 martin .mpcaa_name = "arma9ptmr", 126 1.1.10.2 martin .mpcaa_memt = faa->faa_bst, 127 1.1.10.2 martin .mpcaa_memh = bsh, 128 1.1.10.2 martin .mpcaa_irq = -1, 129 1.1.10.2 martin }; 130 1.1.10.2 martin 131 1.1.10.2 martin config_found(self, &mpcaa, NULL); 132 1.1.10.2 martin 133 1.1.10.2 martin arm_fdt_cpu_hatch_register(self, a9ptmr_fdt_cpu_hatch); 134 1.1.10.2 martin arm_fdt_timer_register(a9ptmr_cpu_initclocks); 135 1.1.10.2 martin } 136 1.1.10.2 martin 137 1.1.10.2 martin static void 138 1.1.10.2 martin a9ptmr_fdt_cpu_hatch(void *priv, struct cpu_info *ci) 139 1.1.10.2 martin { 140 1.1.10.2 martin a9ptmr_init_cpu_clock(ci); 141 1.1.10.2 martin } 142
Indexes created Mon Oct 20 16:09:52 GMT 2025