Home | History | Annotate | Line # | Download | only in vr
vrdcu.c revision 1.5.106.1
      1        1.1  takemura /*
      2        1.1  takemura  * Copyright (c) 2001 HAMAJIMA Katsuomi. All rights reserved.
      3        1.1  takemura  *
      4        1.1  takemura  * Redistribution and use in source and binary forms, with or without
      5        1.1  takemura  * modification, are permitted provided that the following conditions
      6        1.1  takemura  * are met:
      7        1.1  takemura  * 1. Redistributions of source code must retain the above copyright
      8        1.1  takemura  *    notice, this list of conditions and the following disclaimer.
      9        1.1  takemura  * 2. Redistributions in binary form must reproduce the above copyright
     10        1.1  takemura  *    notice, this list of conditions and the following disclaimer in the
     11        1.1  takemura  *    documentation and/or other materials provided with the distribution.
     12        1.1  takemura  *
     13        1.1  takemura  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     14        1.1  takemura  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15        1.1  takemura  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     16        1.1  takemura  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     17        1.1  takemura  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     18        1.1  takemura  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     19        1.1  takemura  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     20        1.1  takemura  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     21        1.1  takemura  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     22        1.1  takemura  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     23        1.1  takemura  * SUCH DAMAGE.
     24        1.1  takemura  */
     25        1.1  takemura 
     26        1.4     lukem #include <sys/cdefs.h>
     27  1.5.106.1    jruoho __KERNEL_RCSID(0, "$NetBSD: vrdcu.c,v 1.5.106.1 2011/06/06 09:05:45 jruoho Exp $");
     28        1.4     lukem 
     29        1.1  takemura #include <sys/param.h>
     30        1.1  takemura #include <sys/systm.h>
     31        1.1  takemura #include <sys/device.h>
     32        1.1  takemura 
     33        1.1  takemura #include <uvm/uvm_extern.h>
     34        1.1  takemura 
     35        1.1  takemura #include <machine/cpu.h>
     36        1.1  takemura #include <machine/bus.h>
     37        1.1  takemura #include <machine/bus_dma_hpcmips.h>
     38        1.1  takemura 
     39        1.1  takemura #include <hpcmips/vr/vripif.h>
     40        1.1  takemura #include <hpcmips/vr/dcureg.h>
     41        1.1  takemura 
     42        1.1  takemura #ifdef VRDCU_DEBUG
     43        1.1  takemura int vrdcu_debug = VRDCU_DEBUG;
     44        1.1  takemura #define DPRINTFN(n,x) if (vrdcu_debug>(n)) printf x;
     45        1.1  takemura #else
     46        1.1  takemura #define DPRINTFN(n,x)
     47        1.1  takemura #endif
     48        1.1  takemura 
     49        1.1  takemura struct vrdcu_softc {
     50        1.1  takemura 	struct device		sc_dev;
     51        1.1  takemura 	bus_space_tag_t		sc_iot;
     52        1.1  takemura 	bus_space_handle_t	sc_ioh;
     53        1.1  takemura 	struct vrdcu_chipset_tag	sc_chipset;
     54        1.1  takemura 	int			sc_status;	/* DMA status */
     55        1.1  takemura };
     56        1.1  takemura 
     57        1.1  takemura int vrdcu_match(struct device *, struct cfdata *, void *);
     58        1.1  takemura void vrdcu_attach(struct device *, struct device *, void *);
     59        1.1  takemura 
     60        1.3   thorpej CFATTACH_DECL(vrdcu, sizeof(struct vrdcu_softc),
     61        1.3   thorpej     vrdcu_match, vrdcu_attach, NULL, NULL);
     62        1.1  takemura 
     63        1.1  takemura int vrdcu_enable_aiuin(vrdcu_chipset_tag_t);
     64        1.1  takemura int vrdcu_enable_aiuout(vrdcu_chipset_tag_t);
     65        1.1  takemura int vrdcu_enable_fir(vrdcu_chipset_tag_t);
     66        1.1  takemura void vrdcu_disable(vrdcu_chipset_tag_t);
     67        1.1  takemura void vrdcu_fir_direction(vrdcu_chipset_tag_t, int);
     68        1.1  takemura int _vrdcu_dmamem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t,
     69        1.1  takemura 			bus_size_t, bus_dma_segment_t *, int, int *, int);
     70        1.1  takemura 
     71        1.1  takemura struct bus_dma_tag vrdcu_bus_dma_tag = {
     72        1.1  takemura 	NULL,
     73        1.1  takemura 	{
     74        1.1  takemura 		_hpcmips_bd_map_create,
     75        1.1  takemura 		_hpcmips_bd_map_destroy,
     76        1.1  takemura 		_hpcmips_bd_map_load,
     77        1.1  takemura 		_hpcmips_bd_map_load_mbuf,
     78        1.1  takemura 		_hpcmips_bd_map_load_uio,
     79        1.1  takemura 		_hpcmips_bd_map_load_raw,
     80        1.1  takemura 		_hpcmips_bd_map_unload,
     81        1.1  takemura 		_hpcmips_bd_map_sync,
     82        1.1  takemura 		_vrdcu_dmamem_alloc,
     83        1.1  takemura 		_hpcmips_bd_mem_free,
     84        1.1  takemura 		_hpcmips_bd_mem_map,
     85        1.1  takemura 		_hpcmips_bd_mem_unmap,
     86        1.1  takemura 		_hpcmips_bd_mem_mmap,
     87        1.1  takemura 	},
     88        1.1  takemura };
     89        1.1  takemura 
     90        1.1  takemura int
     91        1.1  takemura vrdcu_match(struct device *parent, struct cfdata *cf, void *aux)
     92        1.1  takemura {
     93        1.1  takemura 	return 2; /* 1st attach group of vrip */
     94        1.1  takemura }
     95        1.1  takemura 
     96        1.1  takemura void
     97        1.1  takemura vrdcu_attach(struct device *parent, struct device *self, void *aux)
     98        1.1  takemura {
     99        1.1  takemura 	struct vrip_attach_args *va = aux;
    100        1.1  takemura 	struct vrdcu_softc *sc = (void*)self;
    101        1.1  takemura 
    102        1.1  takemura 	sc->sc_iot = va->va_iot;
    103        1.1  takemura 	sc->sc_chipset.dc_sc = sc;
    104        1.1  takemura 	sc->sc_chipset.dc_enable_aiuin = vrdcu_enable_aiuin;
    105        1.1  takemura 	sc->sc_chipset.dc_enable_aiuout = vrdcu_enable_aiuout;
    106        1.1  takemura 	sc->sc_chipset.dc_enable_fir = vrdcu_enable_fir;
    107        1.1  takemura 	sc->sc_chipset.dc_disable = vrdcu_disable;
    108        1.1  takemura 	sc->sc_chipset.dc_fir_direction = vrdcu_fir_direction;
    109        1.1  takemura 
    110        1.1  takemura 	if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size,
    111        1.1  takemura 			  0 /* no flags */, &sc->sc_ioh)) {
    112        1.1  takemura 		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
    113        1.1  takemura 		return;
    114        1.1  takemura 	}
    115        1.1  takemura 	printf("\n");
    116        1.1  takemura 	vrip_register_dcu(va->va_vc, &sc->sc_chipset);
    117        1.1  takemura 
    118        1.1  takemura 	sc->sc_status = DMASDS;
    119        1.1  takemura 	/* reset DCU */
    120        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMARST_REG_W, DMARST);
    121        1.1  takemura }
    122        1.1  takemura 
    123        1.1  takemura int
    124        1.1  takemura vrdcu_enable_aiuin(vrdcu_chipset_tag_t dc)
    125        1.1  takemura {
    126        1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    127        1.1  takemura 	int mask;
    128        1.1  takemura 
    129        1.1  takemura 	DPRINTFN(1, ("vrdcu_enable_aiuin\n"));
    130        1.1  takemura 
    131        1.1  takemura 	if (sc->sc_status){
    132        1.1  takemura 		mask = bus_space_read_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W);
    133        1.1  takemura 		if (mask & DMAMSKAIN) {
    134        1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuin: already enabled\n"));
    135        1.1  takemura 			return 0;
    136        1.1  takemura 		} else {
    137        1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuin: device busy\n"));
    138        1.1  takemura 			return EBUSY;
    139        1.1  takemura 		}
    140        1.1  takemura 	}
    141        1.1  takemura 	sc->sc_status = DMASEN;
    142        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W, DMAMSKAIN);
    143        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    144        1.1  takemura 	return 0;
    145        1.1  takemura }
    146        1.1  takemura 
    147        1.1  takemura int
    148        1.1  takemura vrdcu_enable_aiuout(vrdcu_chipset_tag_t dc)
    149        1.1  takemura {
    150        1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    151        1.1  takemura 	int mask;
    152        1.1  takemura 
    153        1.1  takemura 	DPRINTFN(1, ("vrdcu_enable_aiuout\n"));
    154        1.1  takemura 
    155        1.1  takemura 	if (sc->sc_status){
    156        1.1  takemura 		mask = bus_space_read_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W);
    157        1.1  takemura 		if (mask & DMAMSKAOUT) {
    158        1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuout: already enabled\n"));
    159        1.1  takemura 			return 0;
    160        1.1  takemura 		} else {
    161        1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuout: device busy\n"));
    162        1.1  takemura 			return EBUSY;
    163        1.1  takemura 		}
    164        1.1  takemura 	}
    165        1.1  takemura 	sc->sc_status = DMASEN;
    166        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W, DMAMSKAOUT);
    167        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    168        1.1  takemura 	return 0;
    169        1.1  takemura }
    170        1.1  takemura 
    171        1.1  takemura int
    172        1.1  takemura vrdcu_enable_fir(vrdcu_chipset_tag_t dc)
    173        1.1  takemura {
    174        1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    175        1.1  takemura 	int mask;
    176        1.1  takemura 
    177        1.1  takemura 	DPRINTFN(1, ("vrdcu_enable_fir\n"));
    178        1.1  takemura 
    179        1.1  takemura 	if (sc->sc_status){
    180        1.1  takemura 		mask = bus_space_read_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W);
    181        1.1  takemura 		if (mask & DMAMSKFOUT) {
    182        1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_fir: already enabled\n"));
    183        1.1  takemura 			return 0;
    184        1.1  takemura 		} else {
    185        1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_fir: device busy\n"));
    186        1.1  takemura 			return EBUSY;
    187        1.1  takemura 		}
    188        1.1  takemura 	}
    189        1.1  takemura 	sc->sc_status = DMASEN;
    190        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W, DMAMSKFOUT);
    191        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    192        1.1  takemura 	return 0;
    193        1.1  takemura }
    194        1.1  takemura 
    195        1.1  takemura void
    196        1.1  takemura vrdcu_disable(vrdcu_chipset_tag_t dc)
    197        1.1  takemura {
    198        1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    199        1.1  takemura 
    200        1.1  takemura 	DPRINTFN(1, ("vrdcu_disable\n"));
    201        1.1  takemura 
    202        1.1  takemura 	sc->sc_status = DMASDS;
    203        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    204        1.1  takemura }
    205        1.1  takemura 
    206        1.1  takemura void
    207        1.1  takemura vrdcu_fir_direction(vrdcu_chipset_tag_t dc, int dir)
    208        1.1  takemura {
    209        1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    210        1.1  takemura 
    211        1.1  takemura 	DPRINTFN(1, ("vrdcu_fir_direction: dir %d\n", dir));
    212        1.1  takemura 
    213        1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh,
    214        1.1  takemura 			  DMATD_REG_W, dir & DMATDMASK);
    215        1.1  takemura }
    216        1.1  takemura 
    217        1.1  takemura int
    218        1.1  takemura _vrdcu_dmamem_alloc(bus_dma_tag_t t, bus_size_t size, bus_size_t alignment,
    219        1.1  takemura 		    bus_size_t boundary, bus_dma_segment_t *segs,
    220        1.1  takemura 		    int nsegs, int *rsegs, int flags)
    221        1.1  takemura {
    222        1.1  takemura 	paddr_t high;
    223        1.1  takemura 
    224        1.1  takemura 	DPRINTFN(1, ("_vrdcu_dmamem_alloc\n"));
    225        1.1  takemura 
    226  1.5.106.1    jruoho 	high = (mips_avail_end < VRDMAAU_BOUNCE_THRESHOLD ?
    227  1.5.106.1    jruoho 		mips_avail_end : VRDMAAU_BOUNCE_THRESHOLD) - PAGE_SIZE;
    228        1.1  takemura 	alignment = alignment > VRDMAAU_ALIGNMENT ?
    229        1.1  takemura 		    alignment : VRDMAAU_ALIGNMENT;
    230        1.1  takemura 
    231        1.1  takemura 	return _hpcmips_bd_mem_alloc_range(t, size, alignment, boundary,
    232        1.1  takemura 					   segs, nsegs, rsegs, flags,
    233  1.5.106.1    jruoho 					   mips_avail_start, high);
    234        1.1  takemura }
    235