1 /* 2 * Copyright (c) 2001 HAMAJIMA Katsuomi. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: vrdmaau.c,v 1.7 2015/06/09 22:46:36 matt Exp $"); 28 29 #include <sys/param.h> 30 #include <sys/bus.h> 31 #include <sys/device.h> 32 #include <sys/systm.h> 33 34 #include <mips/cpuregs.h> 35 36 #include <hpcmips/vr/vripif.h> 37 #include <hpcmips/vr/dmaaureg.h> 38 39 #ifdef VRDMAAU_DEBUG 40 int vrdmaau_debug = VRDMAAU_DEBUG; 41 #define DPRINTFN(n,x) if (vrdmaau_debug>(n)) printf x; 42 #else 43 #define DPRINTFN(n,x) 44 #endif 45 46 struct vrdmaau_softc { 47 device_t sc_dev; 48 bus_space_tag_t sc_iot; 49 bus_space_handle_t sc_ioh; 50 struct vrdmaau_chipset_tag sc_chipset; 51 }; 52 53 int vrdmaau_match(device_t, cfdata_t, void *); 54 void vrdmaau_attach(device_t, device_t, void *); 55 56 CFATTACH_DECL_NEW(vrdmaau, sizeof(struct vrdmaau_softc), 57 vrdmaau_match, vrdmaau_attach, NULL, NULL); 58 59 int vrdmaau_set_aiuin(vrdmaau_chipset_tag_t, void *); 60 int vrdmaau_set_aiuout(vrdmaau_chipset_tag_t, void *); 61 int vrdmaau_set_fir(vrdmaau_chipset_tag_t, void *); 62 static int vrdmaau_phy_addr(struct vrdmaau_softc *, void *, u_int32_t *); 63 64 int 65 vrdmaau_match(device_t parent, cfdata_t cf, void *aux) 66 { 67 return 2; /* 1st attach group of vrip */ 68 } 69 70 void 71 vrdmaau_attach(device_t parent, device_t self, void *aux) 72 { 73 struct vrip_attach_args *va = aux; 74 struct vrdmaau_softc *sc = device_private(self); 75 76 sc->sc_dev = self; 77 sc->sc_iot = va->va_iot; 78 sc->sc_chipset.ac_sc = sc; 79 sc->sc_chipset.ac_set_aiuin = vrdmaau_set_aiuin; 80 sc->sc_chipset.ac_set_aiuout = vrdmaau_set_aiuout; 81 sc->sc_chipset.ac_set_fir = vrdmaau_set_fir; 82 83 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 84 0 /* no flags */, &sc->sc_ioh)) { 85 printf(": can't map i/o space\n"); 86 return; 87 } 88 printf("\n"); 89 vrip_register_dmaau(va->va_vc, &sc->sc_chipset); 90 } 91 92 int 93 vrdmaau_set_aiuin(vrdmaau_chipset_tag_t ac, void *addr) 94 { 95 struct vrdmaau_softc *sc = ac->ac_sc; 96 u_int32_t phy; 97 int err; 98 99 DPRINTFN(1, ("vrdmaau_set_aiuin: address %p\n", addr)); 100 101 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 102 return err; 103 104 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAH_REG_W, phy >> 16); 105 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAL_REG_W, phy & 0xffff); 106 return 0; 107 } 108 109 int 110 vrdmaau_set_aiuout(vrdmaau_chipset_tag_t ac, void *addr) 111 { 112 struct vrdmaau_softc *sc = ac->ac_sc; 113 u_int32_t phy; 114 int err; 115 116 DPRINTFN(1, ("vrdmaau_set_aiuout: address %p\n", addr)); 117 118 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 119 return err; 120 121 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAH_REG_W, phy >> 16); 122 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAL_REG_W, phy & 0xffff); 123 return 0; 124 } 125 126 int 127 vrdmaau_set_fir(vrdmaau_chipset_tag_t ac, void *addr) 128 { 129 struct vrdmaau_softc *sc = ac->ac_sc; 130 u_int32_t phy; 131 int err; 132 133 DPRINTFN(1, ("vrdmaau_set_fir: address %p\n", addr)); 134 135 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 136 return err; 137 138 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAH_REG_W, phy >> 16); 139 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAL_REG_W, phy & 0xffff); 140 return 0; 141 } 142 143 static int 144 vrdmaau_phy_addr(struct vrdmaau_softc *sc, void *addr, u_int32_t *phy) 145 { 146 DPRINTFN(1, ("vrdmaau_phy_addr\n")); 147 148 if (addr >= (void *)MIPS_KSEG0_START && 149 addr < (void *)MIPS_KSEG1_START) 150 *phy = MIPS_KSEG0_TO_PHYS(addr); 151 else if (addr >= (void *)MIPS_KSEG1_START && 152 addr < (void *)MIPS_KSEG2_START) 153 *phy = MIPS_KSEG1_TO_PHYS(addr); 154 else { 155 DPRINTFN(0, ("vrdmaau_map_addr: invalid address %p\n", addr)); 156 return EFAULT; 157 } 158 159 #ifdef DIAGNOSTIC 160 if ((*phy & (VRDMAAU_ALIGNMENT - 1)) || 161 *phy >= VRDMAAU_BOUNCE_THRESHOLD ) { 162 printf("%s: vrdmaau_phy_addr: invalid address %p\n", 163 device_xname(sc->sc_dev), addr); 164 return EINVAL; 165 } 166 #endif 167 return 0; 168 } 169