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 1.5 2005/12/11 12:17:34 christos Exp $"); 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/device.h> 32 33 #include <machine/bus.h> 34 35 #include <hpcmips/vr/vripif.h> 36 #include <hpcmips/vr/dmaaureg.h> 37 38 #ifdef VRDMAAU_DEBUG 39 int vrdmaau_debug = VRDMAAU_DEBUG; 40 #define DPRINTFN(n,x) if (vrdmaau_debug>(n)) printf x; 41 #else 42 #define DPRINTFN(n,x) 43 #endif 44 45 struct vrdmaau_softc { 46 struct device sc_dev; 47 bus_space_tag_t sc_iot; 48 bus_space_handle_t sc_ioh; 49 struct vrdmaau_chipset_tag sc_chipset; 50 }; 51 52 int vrdmaau_match(struct device *, struct cfdata *, void *); 53 void vrdmaau_attach(struct device *, struct device *, void *); 54 55 CFATTACH_DECL(vrdmaau, sizeof(struct vrdmaau_softc), 56 vrdmaau_match, vrdmaau_attach, NULL, NULL); 57 58 int vrdmaau_set_aiuin(vrdmaau_chipset_tag_t, void *); 59 int vrdmaau_set_aiuout(vrdmaau_chipset_tag_t, void *); 60 int vrdmaau_set_fir(vrdmaau_chipset_tag_t, void *); 61 static int vrdmaau_phy_addr(struct vrdmaau_softc *, void *, u_int32_t *); 62 63 int 64 vrdmaau_match(struct device *parent, struct cfdata *cf, void *aux) 65 { 66 return 2; /* 1st attach group of vrip */ 67 } 68 69 void 70 vrdmaau_attach(struct device *parent, struct device *self, void *aux) 71 { 72 struct vrip_attach_args *va = aux; 73 struct vrdmaau_softc *sc = (void*)self; 74 75 sc->sc_iot = va->va_iot; 76 sc->sc_chipset.ac_sc = sc; 77 sc->sc_chipset.ac_set_aiuin = vrdmaau_set_aiuin; 78 sc->sc_chipset.ac_set_aiuout = vrdmaau_set_aiuout; 79 sc->sc_chipset.ac_set_fir = vrdmaau_set_fir; 80 81 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 82 0 /* no flags */, &sc->sc_ioh)) { 83 printf(": can't map i/o space\n"); 84 return; 85 } 86 printf("\n"); 87 vrip_register_dmaau(va->va_vc, &sc->sc_chipset); 88 } 89 90 int 91 vrdmaau_set_aiuin(vrdmaau_chipset_tag_t ac, void *addr) 92 { 93 struct vrdmaau_softc *sc = ac->ac_sc; 94 u_int32_t phy; 95 int err; 96 97 DPRINTFN(1, ("vrdmaau_set_aiuin: address %p\n", addr)); 98 99 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 100 return err; 101 102 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAH_REG_W, phy >> 16); 103 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAL_REG_W, phy & 0xffff); 104 return 0; 105 } 106 107 int 108 vrdmaau_set_aiuout(vrdmaau_chipset_tag_t ac, void *addr) 109 { 110 struct vrdmaau_softc *sc = ac->ac_sc; 111 u_int32_t phy; 112 int err; 113 114 DPRINTFN(1, ("vrdmaau_set_aiuout: address %p\n", addr)); 115 116 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 117 return err; 118 119 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAH_REG_W, phy >> 16); 120 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAL_REG_W, phy & 0xffff); 121 return 0; 122 } 123 124 int 125 vrdmaau_set_fir(vrdmaau_chipset_tag_t ac, void *addr) 126 { 127 struct vrdmaau_softc *sc = ac->ac_sc; 128 u_int32_t phy; 129 int err; 130 131 DPRINTFN(1, ("vrdmaau_set_fir: address %p\n", addr)); 132 133 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 134 return err; 135 136 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAH_REG_W, phy >> 16); 137 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAL_REG_W, phy & 0xffff); 138 return 0; 139 } 140 141 static int 142 vrdmaau_phy_addr(struct vrdmaau_softc *sc, void *addr, u_int32_t *phy) 143 { 144 DPRINTFN(1, ("vrdmaau_phy_addr\n")); 145 146 if (addr >= (void *)MIPS_KSEG0_START && 147 addr < (void *)MIPS_KSEG1_START) 148 *phy = MIPS_KSEG0_TO_PHYS(addr); 149 else if (addr >= (void *)MIPS_KSEG1_START && 150 addr < (void *)MIPS_KSEG2_START) 151 *phy = MIPS_KSEG1_TO_PHYS(addr); 152 else { 153 DPRINTFN(0, ("vrdmaau_map_addr: invalid address %p\n", addr)); 154 return EFAULT; 155 } 156 157 #ifdef DIAGNOSTIC 158 if ((*phy & (VRDMAAU_ALIGNMENT - 1)) || 159 *phy >= VRDMAAU_BOUNCE_THRESHOLD ) { 160 printf("%s: vrdmaau_phy_addr: invalid address %p\n", 161 sc->sc_dev.dv_xname, addr); 162 return EINVAL; 163 } 164 #endif 165 return 0; 166 } 167