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/param.h> 27 #include <sys/systm.h> 28 #include <sys/device.h> 29 30 #include <machine/bus.h> 31 32 #include <hpcmips/vr/vripif.h> 33 #include <hpcmips/vr/dmaaureg.h> 34 35 #ifdef VRDMAAU_DEBUG 36 int vrdmaau_debug = VRDMAAU_DEBUG; 37 #define DPRINTFN(n,x) if (vrdmaau_debug>(n)) printf x; 38 #else 39 #define DPRINTFN(n,x) 40 #endif 41 42 struct vrdmaau_softc { 43 struct device sc_dev; 44 bus_space_tag_t sc_iot; 45 bus_space_handle_t sc_ioh; 46 struct vrdmaau_chipset_tag sc_chipset; 47 }; 48 49 int vrdmaau_match(struct device *, struct cfdata *, void *); 50 void vrdmaau_attach(struct device *, struct device *, void *); 51 52 struct cfattach vrdmaau_ca = { 53 sizeof(struct vrdmaau_softc), vrdmaau_match, vrdmaau_attach 54 }; 55 56 int vrdmaau_set_aiuin(vrdmaau_chipset_tag_t, void *); 57 int vrdmaau_set_aiuout(vrdmaau_chipset_tag_t, void *); 58 int vrdmaau_set_fir(vrdmaau_chipset_tag_t, void *); 59 static int vrdmaau_phy_addr(struct vrdmaau_softc *, void *, u_int32_t *); 60 61 int 62 vrdmaau_match(struct device *parent, struct cfdata *cf, void *aux) 63 { 64 return 2; /* 1st attach group of vrip */ 65 } 66 67 void 68 vrdmaau_attach(struct device *parent, struct device *self, void *aux) 69 { 70 struct vrip_attach_args *va = aux; 71 struct vrdmaau_softc *sc = (void*)self; 72 73 sc->sc_iot = va->va_iot; 74 sc->sc_chipset.ac_sc = sc; 75 sc->sc_chipset.ac_set_aiuin = vrdmaau_set_aiuin; 76 sc->sc_chipset.ac_set_aiuout = vrdmaau_set_aiuout; 77 sc->sc_chipset.ac_set_fir = vrdmaau_set_fir; 78 79 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 80 0 /* no flags */, &sc->sc_ioh)) { 81 printf(": can't map i/o space\n"); 82 return; 83 } 84 printf("\n"); 85 vrip_register_dmaau(va->va_vc, &sc->sc_chipset); 86 } 87 88 int 89 vrdmaau_set_aiuin(vrdmaau_chipset_tag_t ac, void *addr) 90 { 91 struct vrdmaau_softc *sc = ac->ac_sc; 92 u_int32_t phy; 93 int err; 94 95 DPRINTFN(1, ("vrdmaau_set_aiuin: address %p\n", addr)); 96 97 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 98 return err; 99 100 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAH_REG_W, phy >> 16); 101 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAL_REG_W, phy & 0xffff); 102 return 0; 103 } 104 105 int 106 vrdmaau_set_aiuout(vrdmaau_chipset_tag_t ac, void *addr) 107 { 108 struct vrdmaau_softc *sc = ac->ac_sc; 109 u_int32_t phy; 110 int err; 111 112 DPRINTFN(1, ("vrdmaau_set_aiuout: address %p\n", addr)); 113 114 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 115 return err; 116 117 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAH_REG_W, phy >> 16); 118 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAL_REG_W, phy & 0xffff); 119 return 0; 120 } 121 122 int 123 vrdmaau_set_fir(vrdmaau_chipset_tag_t ac, void *addr) 124 { 125 struct vrdmaau_softc *sc = ac->ac_sc; 126 u_int32_t phy; 127 int err; 128 129 DPRINTFN(1, ("vrdmaau_set_fir: address %p\n", addr)); 130 131 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 132 return err; 133 134 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAH_REG_W, phy >> 16); 135 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAL_REG_W, phy & 0xffff); 136 return 0; 137 } 138 139 static int 140 vrdmaau_phy_addr(struct vrdmaau_softc *sc, void *addr, u_int32_t *phy) 141 { 142 DPRINTFN(1, ("vrdmaau_phy_addr\n")); 143 144 if (addr >= (void *)MIPS_KSEG0_START && 145 addr < (void *)MIPS_KSEG1_START) 146 *phy = MIPS_KSEG0_TO_PHYS(addr); 147 else if (addr >= (void *)MIPS_KSEG1_START && 148 addr < (void *)MIPS_KSEG2_START) 149 *phy = MIPS_KSEG1_TO_PHYS(addr); 150 else { 151 DPRINTFN(0, ("vrdmaau_map_addr: invalid address %p\n", addr)); 152 return EFAULT; 153 } 154 155 #ifdef DIAGNOSTIC 156 if ((*phy & (VRDMAAU_ALIGNMENT - 1)) || 157 *phy >= VRDMAAU_BOUNCE_THRESHOLD ) { 158 printf("%s: vrdmaau_phy_addr: invalid address %p\n", 159 sc->sc_dev.dv_xname, addr); 160 return EINVAL; 161 } 162 #endif 163 return 0; 164 } 165