ohci_sbus.c revision 1.14
1 /* $NetBSD: ohci_sbus.c,v 1.14 2020/11/21 17:46:08 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: ohci_sbus.c,v 1.14 2020/11/21 17:46:08 thorpej Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/kmem.h> 37 38 /* bus_dma */ 39 #include <sys/mbuf.h> 40 #include <uvm/uvm_extern.h> 41 42 #define _PLAYSTATION2_BUS_DMA_PRIVATE 43 #include <machine/bus.h> 44 #include <machine/autoconf.h> 45 46 #include <mips/cpuregs.h> 47 48 #include <dev/usb/usb.h> 49 #include <dev/usb/usbdi.h> 50 #include <dev/usb/usbdivar.h> 51 #include <dev/usb/usb_mem.h> 52 53 #include <dev/usb/ohcireg.h> 54 #include <dev/usb/ohcivar.h> 55 56 #include <playstation2/ee/sifvar.h> /* DMA staff */ 57 #include <playstation2/ee/dmacvar.h> 58 #include <playstation2/dev/sbusvar.h> 59 60 #ifdef DEBUG 61 #define STATIC 62 #else 63 #define STATIC static 64 #endif 65 66 #define SBUS_OHCI_REGBASE MIPS_PHYS_TO_KSEG1(0x1f801600) 67 #define SBUS_OHCI_REGSIZE 0x1000 68 69 STATIC int ohci_sbus_match(struct device *, struct cfdata *, void *); 70 STATIC void ohci_sbus_attach(struct device *, struct device *, void *); 71 72 STATIC void _ohci_sbus_map_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 73 bus_size_t, int); 74 STATIC int _ohci_sbus_mem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t, 75 bus_size_t, bus_dma_segment_t *, int, int *, int); 76 STATIC void _ohci_sbus_mem_free(bus_dma_tag_t, bus_dma_segment_t *, int); 77 STATIC int _ohci_sbus_mem_map(bus_dma_tag_t, bus_dma_segment_t *, int, size_t, 78 void **, int); 79 STATIC void _ohci_sbus_mem_unmap(bus_dma_tag_t, void *, size_t); 80 81 struct playstation2_bus_dma_tag ohci_bus_dma_tag = { 82 _bus_dmamap_create, 83 _bus_dmamap_destroy, 84 _bus_dmamap_load, 85 _bus_dmamap_load_mbuf, 86 _bus_dmamap_load_uio, 87 _bus_dmamap_load_raw, 88 _bus_dmamap_unload, 89 _ohci_sbus_map_sync, 90 _ohci_sbus_mem_alloc, 91 _ohci_sbus_mem_free, 92 _ohci_sbus_mem_map, 93 _ohci_sbus_mem_unmap, 94 _bus_dmamem_mmap, 95 }; 96 97 struct ohci_dma_segment { 98 struct iopdma_segment ds_iopdma_seg; 99 100 LIST_ENTRY(ohci_dma_segment) ds_link; 101 }; 102 103 struct ohci_sbus_softc { 104 struct ohci_softc sc; 105 106 LIST_HEAD(, ohci_dma_segment) sc_dmaseg_head; 107 }; 108 109 CFATTACH_DECL_NEW(ohci_sbus, sizeof(struct ohci_sbus_softc), 110 ohci_sbus_match, ohci_sbus_attach, NULL, NULL); 111 112 int 113 ohci_sbus_match(struct device *parent, struct cfdata *cf, void *aux) 114 { 115 116 return 1; 117 } 118 119 void 120 ohci_sbus_attach(struct device *parent, struct device *self, void *aux) 121 { 122 struct ohci_sbus_softc *sc = device_private(self); 123 124 printf("\n"); 125 126 sc->sc.sc_dev = self; 127 sc->sc.sc_bus.ub_hcpriv = sc; 128 129 sc->sc.iot = bus_space_create(0, "OHCI I/O space", SBUS_OHCI_REGBASE, 130 SBUS_OHCI_REGSIZE); 131 sc->sc.ioh = SBUS_OHCI_REGBASE; 132 133 ohci_bus_dma_tag._dmachip_cookie = sc; 134 sc->sc.sc_bus.ub_dmatag = &ohci_bus_dma_tag; 135 136 /* Disable interrupts, so we don't can any spurious ones. */ 137 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 138 OHCI_ALL_INTRS); 139 140 sbus_intr_establish(SBUS_IRQ_USB, ohci_intr, sc); 141 142 /* IOP/EE DMA relay segment list */ 143 LIST_INIT(&sc->sc_dmaseg_head); 144 145 int err = ohci_init(&sc->sc); 146 147 if (err) { 148 printf(": init failed. error=%d\n", err); 149 return; 150 } 151 152 /* Attach usb device. */ 153 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 154 } 155 156 void 157 _ohci_sbus_map_sync(bus_dma_tag_t t, bus_dmamap_t map, bus_addr_t offset, 158 bus_size_t len, int ops) 159 { 160 161 dmac_sync_buffer(); /* XXX over flush */ 162 } 163 164 int 165 _ohci_sbus_mem_alloc(bus_dma_tag_t t, bus_size_t size, bus_size_t alignment, 166 bus_size_t boundary, bus_dma_segment_t *segs, int nsegs, int *rsegs, 167 int flags) 168 { 169 struct ohci_sbus_softc *sc = t->_dmachip_cookie; 170 struct ohci_dma_segment *ds; 171 struct iopdma_segment *iopdma_seg; 172 int error; 173 174 KDASSERT(sc); 175 ds = kmem_intr_alloc(sizeof(struct ohci_dma_segment), KM_NOSLEEP); 176 if (ds == NULL) 177 return 1; 178 /* 179 * Allocate DMA Area (IOP DMA Area <-> SIF DMA <-> EE DMA Area) 180 */ 181 iopdma_seg = &ds->ds_iopdma_seg; 182 error = iopdma_allocate_buffer(iopdma_seg, size); 183 184 if (error) { 185 kmem_intr_free(ds, sizeof(*ds)); 186 return 1; 187 } 188 189 segs[0].ds_len = iopdma_seg->size; 190 segs[0].ds_addr = iopdma_seg->iop_paddr; 191 segs[0]._ds_vaddr = iopdma_seg->ee_vaddr; 192 193 LIST_INSERT_HEAD(&sc->sc_dmaseg_head, ds, ds_link); 194 195 *rsegs = 1; 196 197 return 0; 198 } 199 200 void 201 _ohci_sbus_mem_free(bus_dma_tag_t t, bus_dma_segment_t *segs, int nsegs) 202 { 203 struct ohci_sbus_softc *sc = t->_dmachip_cookie; 204 struct ohci_dma_segment *ds; 205 paddr_t addr = segs[0].ds_addr; 206 207 for (ds = LIST_FIRST(&sc->sc_dmaseg_head); ds != NULL; 208 ds = LIST_NEXT(ds, ds_link)) { 209 if (ds->ds_iopdma_seg.iop_paddr == addr) { 210 iopdma_free_buffer(&ds->ds_iopdma_seg); 211 212 LIST_REMOVE(ds, ds_link); 213 kmem_intr_free(ds, sizeof(*ds)); 214 return; 215 } 216 } 217 218 panic("_dmamem_free: can't find corresponding handle."); 219 /* NOTREACHED */ 220 } 221 222 int 223 _ohci_sbus_mem_map(bus_dma_tag_t t, bus_dma_segment_t *segs, int nsegs, size_t size, 224 void **kvap, int flags) 225 { 226 struct ohci_sbus_softc *sc = t->_dmachip_cookie; 227 struct ohci_dma_segment *ds; 228 paddr_t addr = segs[0].ds_addr; 229 230 for (ds = LIST_FIRST(&sc->sc_dmaseg_head); ds != NULL; 231 ds = LIST_NEXT(ds, ds_link)) { 232 if (ds->ds_iopdma_seg.iop_paddr == addr) { 233 234 *kvap = (void *)ds->ds_iopdma_seg.ee_vaddr; 235 236 return 0; 237 } 238 } 239 240 return 1; 241 } 242 243 void 244 _ohci_sbus_mem_unmap(bus_dma_tag_t t, void *kva, size_t size) 245 { 246 /* nothing to do */ 247 } 248
Indexes created Wed Oct 01 19:09:53 GMT 2025