qemufwcfg_fdt.c revision 1.1.2.2
1 1.1.2.2 pgoyette /* $NetBSD: qemufwcfg_fdt.c,v 1.1.2.2 2018/06/25 07:25:49 pgoyette Exp $ */ 2 1.1.2.2 pgoyette 3 1.1.2.2 pgoyette /*- 4 1.1.2.2 pgoyette * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca> 5 1.1.2.2 pgoyette * All rights reserved. 6 1.1.2.2 pgoyette * 7 1.1.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 pgoyette * modification, are permitted provided that the following conditions 9 1.1.2.2 pgoyette * are met: 10 1.1.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 pgoyette * documentation and/or other materials provided with the distribution. 15 1.1.2.2 pgoyette * 16 1.1.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.1.2.2 pgoyette * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.1.2.2 pgoyette * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.1.2.2 pgoyette * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.1.2.2 pgoyette * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.1.2.2 pgoyette * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.1.2.2 pgoyette * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.1.2.2 pgoyette * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.1.2.2 pgoyette * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.2.2 pgoyette * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.2.2 pgoyette * SUCH DAMAGE. 27 1.1.2.2 pgoyette */ 28 1.1.2.2 pgoyette 29 1.1.2.2 pgoyette #include <sys/cdefs.h> 30 1.1.2.2 pgoyette __KERNEL_RCSID(0, "$NetBSD: qemufwcfg_fdt.c,v 1.1.2.2 2018/06/25 07:25:49 pgoyette Exp $"); 31 1.1.2.2 pgoyette 32 1.1.2.2 pgoyette #include <sys/param.h> 33 1.1.2.2 pgoyette #include <sys/device.h> 34 1.1.2.2 pgoyette #include <sys/systm.h> 35 1.1.2.2 pgoyette #include <sys/mutex.h> 36 1.1.2.2 pgoyette #include <sys/bus.h> 37 1.1.2.2 pgoyette 38 1.1.2.2 pgoyette #include <dev/fdt/fdtvar.h> 39 1.1.2.2 pgoyette 40 1.1.2.2 pgoyette #include <dev/ic/qemufwcfgvar.h> 41 1.1.2.2 pgoyette 42 1.1.2.2 pgoyette static int fwcfg_fdt_match(device_t, cfdata_t, void *); 43 1.1.2.2 pgoyette static void fwcfg_fdt_attach(device_t, device_t, void *); 44 1.1.2.2 pgoyette 45 1.1.2.2 pgoyette CFATTACH_DECL_NEW(qemufwcfg_fdt, sizeof(struct fwcfg_softc), 46 1.1.2.2 pgoyette fwcfg_fdt_match, 47 1.1.2.2 pgoyette fwcfg_fdt_attach, 48 1.1.2.2 pgoyette NULL, 49 1.1.2.2 pgoyette NULL 50 1.1.2.2 pgoyette ); 51 1.1.2.2 pgoyette 52 1.1.2.2 pgoyette static const char * const compatible[] = { 53 1.1.2.2 pgoyette "qemu,fw-cfg-mmio", 54 1.1.2.2 pgoyette NULL 55 1.1.2.2 pgoyette }; 56 1.1.2.2 pgoyette 57 1.1.2.2 pgoyette 58 1.1.2.2 pgoyette static int 59 1.1.2.2 pgoyette fwcfg_fdt_match(device_t parent, cfdata_t match, void *opaque) 60 1.1.2.2 pgoyette { 61 1.1.2.2 pgoyette struct fdt_attach_args * const faa = opaque; 62 1.1.2.2 pgoyette 63 1.1.2.2 pgoyette return of_match_compatible(faa->faa_phandle, compatible); 64 1.1.2.2 pgoyette } 65 1.1.2.2 pgoyette 66 1.1.2.2 pgoyette static void 67 1.1.2.2 pgoyette fwcfg_fdt_attach(device_t parent, device_t self, void *opaque) 68 1.1.2.2 pgoyette { 69 1.1.2.2 pgoyette struct fwcfg_softc *sc = device_private(self); 70 1.1.2.2 pgoyette struct fdt_attach_args * const faa = opaque; 71 1.1.2.2 pgoyette bus_addr_t base; 72 1.1.2.2 pgoyette bus_size_t size; 73 1.1.2.2 pgoyette 74 1.1.2.2 pgoyette if (fdtbus_get_reg(faa->faa_phandle, 0, &base, &size) != 0) { 75 1.1.2.2 pgoyette aprint_error_dev(self, "couldn't get registers\n"); 76 1.1.2.2 pgoyette return; 77 1.1.2.2 pgoyette } 78 1.1.2.2 pgoyette 79 1.1.2.2 pgoyette sc->sc_dev = self; 80 1.1.2.2 pgoyette sc->sc_bst = faa->faa_bst; 81 1.1.2.2 pgoyette 82 1.1.2.2 pgoyette if (bus_space_map(sc->sc_bst, base, size, 0, &sc->sc_bsh) != 0) { 83 1.1.2.2 pgoyette aprint_error_dev(self, "couldn't map registers\n"); 84 1.1.2.2 pgoyette return; 85 1.1.2.2 pgoyette } 86 1.1.2.2 pgoyette 87 1.1.2.2 pgoyette aprint_naive("\n"); 88 1.1.2.2 pgoyette aprint_normal("\n"); 89 1.1.2.2 pgoyette 90 1.1.2.2 pgoyette fwcfg_attach(sc); 91 1.1.2.2 pgoyette 92 1.1.2.2 pgoyette pmf_device_register(self, NULL, NULL); 93 1.1.2.2 pgoyette } 94
Indexes created Thu Oct 02 01:09:59 GMT 2025