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      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  1.8      matt __KERNEL_RCSID(0, "$NetBSD: vrdcu.c,v 1.8 2015/06/11 08:22:09 matt 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 	bus_space_tag_t		sc_iot;
     51  1.1  takemura 	bus_space_handle_t	sc_ioh;
     52  1.1  takemura 	struct vrdcu_chipset_tag	sc_chipset;
     53  1.1  takemura 	int			sc_status;	/* DMA status */
     54  1.1  takemura };
     55  1.1  takemura 
     56  1.7       chs int vrdcu_match(device_t, cfdata_t, void *);
     57  1.7       chs void vrdcu_attach(device_t, device_t, void *);
     58  1.1  takemura 
     59  1.7       chs CFATTACH_DECL_NEW(vrdcu, sizeof(struct vrdcu_softc),
     60  1.3   thorpej     vrdcu_match, vrdcu_attach, NULL, NULL);
     61  1.1  takemura 
     62  1.1  takemura int vrdcu_enable_aiuin(vrdcu_chipset_tag_t);
     63  1.1  takemura int vrdcu_enable_aiuout(vrdcu_chipset_tag_t);
     64  1.1  takemura int vrdcu_enable_fir(vrdcu_chipset_tag_t);
     65  1.1  takemura void vrdcu_disable(vrdcu_chipset_tag_t);
     66  1.1  takemura void vrdcu_fir_direction(vrdcu_chipset_tag_t, int);
     67  1.1  takemura int _vrdcu_dmamem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t,
     68  1.1  takemura 			bus_size_t, bus_dma_segment_t *, int, int *, int);
     69  1.1  takemura 
     70  1.1  takemura struct bus_dma_tag vrdcu_bus_dma_tag = {
     71  1.1  takemura 	NULL,
     72  1.1  takemura 	{
     73  1.1  takemura 		_hpcmips_bd_map_create,
     74  1.1  takemura 		_hpcmips_bd_map_destroy,
     75  1.1  takemura 		_hpcmips_bd_map_load,
     76  1.1  takemura 		_hpcmips_bd_map_load_mbuf,
     77  1.1  takemura 		_hpcmips_bd_map_load_uio,
     78  1.1  takemura 		_hpcmips_bd_map_load_raw,
     79  1.1  takemura 		_hpcmips_bd_map_unload,
     80  1.1  takemura 		_hpcmips_bd_map_sync,
     81  1.1  takemura 		_vrdcu_dmamem_alloc,
     82  1.1  takemura 		_hpcmips_bd_mem_free,
     83  1.1  takemura 		_hpcmips_bd_mem_map,
     84  1.1  takemura 		_hpcmips_bd_mem_unmap,
     85  1.1  takemura 		_hpcmips_bd_mem_mmap,
     86  1.1  takemura 	},
     87  1.1  takemura };
     88  1.1  takemura 
     89  1.1  takemura int
     90  1.7       chs vrdcu_match(device_t parent, cfdata_t cf, void *aux)
     91  1.1  takemura {
     92  1.1  takemura 	return 2; /* 1st attach group of vrip */
     93  1.1  takemura }
     94  1.1  takemura 
     95  1.1  takemura void
     96  1.7       chs vrdcu_attach(device_t parent, device_t self, void *aux)
     97  1.1  takemura {
     98  1.1  takemura 	struct vrip_attach_args *va = aux;
     99  1.7       chs 	struct vrdcu_softc *sc = device_private(self);
    100  1.1  takemura 
    101  1.1  takemura 	sc->sc_iot = va->va_iot;
    102  1.1  takemura 	sc->sc_chipset.dc_sc = sc;
    103  1.1  takemura 	sc->sc_chipset.dc_enable_aiuin = vrdcu_enable_aiuin;
    104  1.1  takemura 	sc->sc_chipset.dc_enable_aiuout = vrdcu_enable_aiuout;
    105  1.1  takemura 	sc->sc_chipset.dc_enable_fir = vrdcu_enable_fir;
    106  1.1  takemura 	sc->sc_chipset.dc_disable = vrdcu_disable;
    107  1.1  takemura 	sc->sc_chipset.dc_fir_direction = vrdcu_fir_direction;
    108  1.1  takemura 
    109  1.1  takemura 	if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size,
    110  1.1  takemura 			  0 /* no flags */, &sc->sc_ioh)) {
    111  1.7       chs 		printf("%s: can't map i/o space\n", device_xname(self));
    112  1.1  takemura 		return;
    113  1.1  takemura 	}
    114  1.1  takemura 	printf("\n");
    115  1.1  takemura 	vrip_register_dcu(va->va_vc, &sc->sc_chipset);
    116  1.1  takemura 
    117  1.1  takemura 	sc->sc_status = DMASDS;
    118  1.1  takemura 	/* reset DCU */
    119  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMARST_REG_W, DMARST);
    120  1.1  takemura }
    121  1.1  takemura 
    122  1.1  takemura int
    123  1.1  takemura vrdcu_enable_aiuin(vrdcu_chipset_tag_t dc)
    124  1.1  takemura {
    125  1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    126  1.1  takemura 	int mask;
    127  1.1  takemura 
    128  1.1  takemura 	DPRINTFN(1, ("vrdcu_enable_aiuin\n"));
    129  1.1  takemura 
    130  1.1  takemura 	if (sc->sc_status){
    131  1.1  takemura 		mask = bus_space_read_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W);
    132  1.1  takemura 		if (mask & DMAMSKAIN) {
    133  1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuin: already enabled\n"));
    134  1.1  takemura 			return 0;
    135  1.1  takemura 		} else {
    136  1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuin: device busy\n"));
    137  1.1  takemura 			return EBUSY;
    138  1.1  takemura 		}
    139  1.1  takemura 	}
    140  1.1  takemura 	sc->sc_status = DMASEN;
    141  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W, DMAMSKAIN);
    142  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    143  1.1  takemura 	return 0;
    144  1.1  takemura }
    145  1.1  takemura 
    146  1.1  takemura int
    147  1.1  takemura vrdcu_enable_aiuout(vrdcu_chipset_tag_t dc)
    148  1.1  takemura {
    149  1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    150  1.1  takemura 	int mask;
    151  1.1  takemura 
    152  1.1  takemura 	DPRINTFN(1, ("vrdcu_enable_aiuout\n"));
    153  1.1  takemura 
    154  1.1  takemura 	if (sc->sc_status){
    155  1.1  takemura 		mask = bus_space_read_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W);
    156  1.1  takemura 		if (mask & DMAMSKAOUT) {
    157  1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuout: already enabled\n"));
    158  1.1  takemura 			return 0;
    159  1.1  takemura 		} else {
    160  1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_aiuout: device busy\n"));
    161  1.1  takemura 			return EBUSY;
    162  1.1  takemura 		}
    163  1.1  takemura 	}
    164  1.1  takemura 	sc->sc_status = DMASEN;
    165  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W, DMAMSKAOUT);
    166  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    167  1.1  takemura 	return 0;
    168  1.1  takemura }
    169  1.1  takemura 
    170  1.1  takemura int
    171  1.1  takemura vrdcu_enable_fir(vrdcu_chipset_tag_t dc)
    172  1.1  takemura {
    173  1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    174  1.1  takemura 	int mask;
    175  1.1  takemura 
    176  1.1  takemura 	DPRINTFN(1, ("vrdcu_enable_fir\n"));
    177  1.1  takemura 
    178  1.1  takemura 	if (sc->sc_status){
    179  1.1  takemura 		mask = bus_space_read_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W);
    180  1.1  takemura 		if (mask & DMAMSKFOUT) {
    181  1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_fir: already enabled\n"));
    182  1.1  takemura 			return 0;
    183  1.1  takemura 		} else {
    184  1.1  takemura 			DPRINTFN(0, ("vrdcu_enable_fir: device busy\n"));
    185  1.1  takemura 			return EBUSY;
    186  1.1  takemura 		}
    187  1.1  takemura 	}
    188  1.1  takemura 	sc->sc_status = DMASEN;
    189  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMAMSK_REG_W, DMAMSKFOUT);
    190  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    191  1.1  takemura 	return 0;
    192  1.1  takemura }
    193  1.1  takemura 
    194  1.1  takemura void
    195  1.1  takemura vrdcu_disable(vrdcu_chipset_tag_t dc)
    196  1.1  takemura {
    197  1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    198  1.1  takemura 
    199  1.1  takemura 	DPRINTFN(1, ("vrdcu_disable\n"));
    200  1.1  takemura 
    201  1.1  takemura 	sc->sc_status = DMASDS;
    202  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, DMASEN_REG_W, sc->sc_status);
    203  1.1  takemura }
    204  1.1  takemura 
    205  1.1  takemura void
    206  1.1  takemura vrdcu_fir_direction(vrdcu_chipset_tag_t dc, int dir)
    207  1.1  takemura {
    208  1.1  takemura 	struct vrdcu_softc *sc = dc->dc_sc;
    209  1.1  takemura 
    210  1.1  takemura 	DPRINTFN(1, ("vrdcu_fir_direction: dir %d\n", dir));
    211  1.1  takemura 
    212  1.1  takemura 	bus_space_write_2(sc->sc_iot, sc->sc_ioh,
    213  1.1  takemura 			  DMATD_REG_W, dir & DMATDMASK);
    214  1.1  takemura }
    215  1.1  takemura 
    216  1.1  takemura int
    217  1.1  takemura _vrdcu_dmamem_alloc(bus_dma_tag_t t, bus_size_t size, bus_size_t alignment,
    218  1.1  takemura 		    bus_size_t boundary, bus_dma_segment_t *segs,
    219  1.1  takemura 		    int nsegs, int *rsegs, int flags)
    220  1.1  takemura {
    221  1.1  takemura 	paddr_t high;
    222  1.1  takemura 
    223  1.1  takemura 	DPRINTFN(1, ("_vrdcu_dmamem_alloc\n"));
    224  1.1  takemura 
    225  1.8      matt 	high = (pmap_limits.avail_end < VRDMAAU_BOUNCE_THRESHOLD ?
    226  1.8      matt 		pmap_limits.avail_end : VRDMAAU_BOUNCE_THRESHOLD) - PAGE_SIZE;
    227  1.1  takemura 	alignment = alignment > VRDMAAU_ALIGNMENT ?
    228  1.1  takemura 		    alignment : VRDMAAU_ALIGNMENT;
    229  1.1  takemura 
    230  1.1  takemura 	return _hpcmips_bd_mem_alloc_range(t, size, alignment, boundary,
    231  1.1  takemura 					   segs, nsegs, rsegs, flags,
    232  1.8      matt 					   pmap_limits.avail_start, high);
    233  1.1  takemura }
    234