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 1.6 2012/10/27 17:17:56 chs 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 device_t 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(device_t, cfdata_t, void *); 53 void vrdmaau_attach(device_t, device_t, void *); 54 55 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t cf, void *aux) 65 { 66 return 2; /* 1st attach group of vrip */ 67 } 68 69 void 70 vrdmaau_attach(device_t parent, device_t self, void *aux) 71 { 72 struct vrip_attach_args *va = aux; 73 struct vrdmaau_softc *sc = device_private(self); 74 75 sc->sc_dev = self; 76 sc->sc_iot = va->va_iot; 77 sc->sc_chipset.ac_sc = sc; 78 sc->sc_chipset.ac_set_aiuin = vrdmaau_set_aiuin; 79 sc->sc_chipset.ac_set_aiuout = vrdmaau_set_aiuout; 80 sc->sc_chipset.ac_set_fir = vrdmaau_set_fir; 81 82 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 83 0 /* no flags */, &sc->sc_ioh)) { 84 printf(": can't map i/o space\n"); 85 return; 86 } 87 printf("\n"); 88 vrip_register_dmaau(va->va_vc, &sc->sc_chipset); 89 } 90 91 int 92 vrdmaau_set_aiuin(vrdmaau_chipset_tag_t ac, void *addr) 93 { 94 struct vrdmaau_softc *sc = ac->ac_sc; 95 u_int32_t phy; 96 int err; 97 98 DPRINTFN(1, ("vrdmaau_set_aiuin: address %p\n", addr)); 99 100 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 101 return err; 102 103 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAH_REG_W, phy >> 16); 104 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUIBAL_REG_W, phy & 0xffff); 105 return 0; 106 } 107 108 int 109 vrdmaau_set_aiuout(vrdmaau_chipset_tag_t ac, void *addr) 110 { 111 struct vrdmaau_softc *sc = ac->ac_sc; 112 u_int32_t phy; 113 int err; 114 115 DPRINTFN(1, ("vrdmaau_set_aiuout: address %p\n", addr)); 116 117 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 118 return err; 119 120 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAH_REG_W, phy >> 16); 121 bus_space_write_2(sc->sc_iot, sc->sc_ioh, AIUOBAL_REG_W, phy & 0xffff); 122 return 0; 123 } 124 125 int 126 vrdmaau_set_fir(vrdmaau_chipset_tag_t ac, void *addr) 127 { 128 struct vrdmaau_softc *sc = ac->ac_sc; 129 u_int32_t phy; 130 int err; 131 132 DPRINTFN(1, ("vrdmaau_set_fir: address %p\n", addr)); 133 134 if ((err = vrdmaau_phy_addr(sc, addr, &phy))) 135 return err; 136 137 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAH_REG_W, phy >> 16); 138 bus_space_write_2(sc->sc_iot, sc->sc_ioh, FIRBAL_REG_W, phy & 0xffff); 139 return 0; 140 } 141 142 static int 143 vrdmaau_phy_addr(struct vrdmaau_softc *sc, void *addr, u_int32_t *phy) 144 { 145 DPRINTFN(1, ("vrdmaau_phy_addr\n")); 146 147 if (addr >= (void *)MIPS_KSEG0_START && 148 addr < (void *)MIPS_KSEG1_START) 149 *phy = MIPS_KSEG0_TO_PHYS(addr); 150 else if (addr >= (void *)MIPS_KSEG1_START && 151 addr < (void *)MIPS_KSEG2_START) 152 *phy = MIPS_KSEG1_TO_PHYS(addr); 153 else { 154 DPRINTFN(0, ("vrdmaau_map_addr: invalid address %p\n", addr)); 155 return EFAULT; 156 } 157 158 #ifdef DIAGNOSTIC 159 if ((*phy & (VRDMAAU_ALIGNMENT - 1)) || 160 *phy >= VRDMAAU_BOUNCE_THRESHOLD ) { 161 printf("%s: vrdmaau_phy_addr: invalid address %p\n", 162 device_xname(sc->sc_dev), addr); 163 return EINVAL; 164 } 165 #endif 166 return 0; 167 } 168