plumohci.c revision 1.5
1 /* $NetBSD: plumohci.c,v 1.5 2001/11/18 08:19:39 takemura Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 UCHIYAMA Yasushi 5 * Copyright (c) 1999 MAEKAWA Masahide <bishop (at) rr.iij4u.or.jp> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* 31 * USB Open Host Controller driver. 32 * 33 * OHCI spec: ftp://ftp.compaq.com/pub/supportinformation/papers/hcir1_0a.exe 34 * USB spec: http://www.usb.org/developers/data/usb11.pdf 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <sys/proc.h> 42 #include <sys/queue.h> 43 44 /* busdma */ 45 #include <sys/mbuf.h> 46 #include <uvm/uvm_extern.h> 47 48 #include <machine/bus.h> 49 #include <machine/bus_dma_hpcmips.h> 50 51 #include <dev/usb/usb.h> 52 #include <dev/usb/usbdi.h> 53 #include <dev/usb/usbdivar.h> 54 #include <dev/usb/usb_mem.h> 55 56 #include <dev/usb/ohcireg.h> 57 #include <dev/usb/ohcivar.h> 58 59 #include <hpcmips/tx/tx39var.h> 60 #include <hpcmips/dev/plumvar.h> 61 #include <hpcmips/dev/plumicuvar.h> 62 #include <hpcmips/dev/plumpowervar.h> 63 #include <hpcmips/dev/plumohcireg.h> 64 65 int plumohci_match(struct device *, struct cfdata *, void *); 66 void plumohci_attach(struct device *, struct device *, void *); 67 int plumohci_intr(void *); 68 69 void __plumohci_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, 70 bus_addr_t, bus_size_t, int); 71 int __plumohci_dmamem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t, 72 bus_size_t, bus_dma_segment_t *, int, int *, int); 73 void __plumohci_dmamem_free(bus_dma_tag_t, bus_dma_segment_t *, int); 74 int __plumohci_dmamem_map(bus_dma_tag_t, bus_dma_segment_t *, 75 int, size_t, caddr_t *, int); 76 void __plumohci_dmamem_unmap(bus_dma_tag_t, caddr_t, size_t); 77 78 struct bus_dma_tag_hpcmips plumohci_bus_dma_tag = { 79 { 80 NULL, 81 { 82 _hpcmips_bd_map_create, 83 _hpcmips_bd_map_destroy, 84 _hpcmips_bd_map_load, 85 _hpcmips_bd_map_load_mbuf, 86 _hpcmips_bd_map_load_uio, 87 _hpcmips_bd_map_load_raw, 88 _hpcmips_bd_map_unload, 89 __plumohci_dmamap_sync, 90 __plumohci_dmamem_alloc, 91 __plumohci_dmamem_free, 92 __plumohci_dmamem_map, 93 __plumohci_dmamem_unmap, 94 _hpcmips_bd_mem_mmap, 95 }, 96 }, 97 NULL, 98 }; 99 100 struct plumohci_shm { 101 bus_space_handle_t ps_bsh; 102 paddr_t ps_paddr; 103 caddr_t ps_caddr; 104 size_t ps_size; 105 LIST_ENTRY(plumohci_shm) ps_link; 106 }; 107 108 struct plumohci_softc { 109 struct ohci_softc sc; 110 void *sc_ih; 111 void *sc_wakeih; 112 113 LIST_HEAD(, plumohci_shm) sc_shm_head; 114 }; 115 116 struct cfattach plumohci_ca = { 117 sizeof(struct plumohci_softc), plumohci_match, plumohci_attach, 118 }; 119 120 int 121 plumohci_match(struct device *parent, struct cfdata *match, void *aux) 122 { 123 /* PLUM2 builtin OHCI module */ 124 125 return (1); 126 } 127 128 void 129 plumohci_attach(struct device *parent, struct device *self, void *aux) 130 { 131 struct plumohci_softc *sc = (struct plumohci_softc *)self; 132 struct plum_attach_args *pa = aux; 133 usbd_status r; 134 135 sc->sc.iot = pa->pa_iot; 136 sc->sc.sc_bus.dmatag = &plumohci_bus_dma_tag.bdt; 137 plumohci_bus_dma_tag._dmamap_chipset_v = sc; 138 139 /* Map I/O space */ 140 if (bus_space_map(sc->sc.iot, PLUM_OHCI_REGBASE, OHCI_PAGE_SIZE, 141 0, &sc->sc.ioh)) { 142 printf(": cannot map mem space\n"); 143 return; 144 } 145 146 /* power up */ 147 /* 148 * in the case of PLUM2, UHOSTC uses the VRAM as the shared RAM 149 * so establish power/clock of Video contoroller 150 */ 151 plum_power_establish(pa->pa_pc, PLUM_PWR_EXTPW1); 152 plum_power_establish(pa->pa_pc, PLUM_PWR_USB); 153 154 /* Disable interrupts, so we don't can any spurious ones. */ 155 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 156 OHCI_ALL_INTRS); 157 158 /* master enable */ 159 sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE, 160 IPL_USB, ohci_intr, sc); 161 #if 0 162 /* 163 * enable the clock restart request interrupt 164 * (for USBSUSPEND state) 165 */ 166 sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE, 167 IST_EDGE, IPL_USB, 168 plumohci_intr, sc); 169 #endif 170 /* 171 * Shared memory list. 172 */ 173 LIST_INIT(&sc->sc_shm_head); 174 175 printf("\n"); 176 177 r = ohci_init(&sc->sc); 178 179 if (r != USBD_NORMAL_COMPLETION) { 180 printf(": init failed, error=%d\n", r); 181 182 plum_intr_disestablish(pa->pa_pc, sc->sc_ih); 183 plum_intr_disestablish(pa->pa_pc, sc->sc_wakeih); 184 185 return; 186 } 187 188 /* Attach usb device. */ 189 sc->sc.sc_child = config_found((void *) sc, &sc->sc.sc_bus, 190 usbctlprint); 191 } 192 193 int 194 plumohci_intr(void *arg) 195 { 196 printf("Plum2 OHCI: wakeup intr\n"); 197 return 0; 198 } 199 200 /* 201 * Plum2 OHCI specific busdma routines. 202 * Plum2 OHCI shared buffer can't allocate on memory 203 * but V-RAM (busspace). 204 */ 205 206 void 207 __plumohci_dmamap_sync(bus_dma_tag_t tx, bus_dmamap_t map, bus_addr_t offset, 208 bus_size_t len, int ops) 209 { 210 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 211 struct plumohci_softc *sc = t->_dmamap_chipset_v; 212 213 /* 214 * Flush the write buffer allocated on the V-RAM. 215 * Accessing any host controller register flushs write buffer 216 */ 217 (void)bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_REVISION); 218 } 219 220 int 221 __plumohci_dmamem_alloc(bus_dma_tag_t tx, bus_size_t size, 222 bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, 223 int nsegs, int *rsegs, int flags) 224 { 225 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 226 struct plumohci_softc *sc = t->_dmamap_chipset_v; 227 struct plumohci_shm *ps; 228 bus_space_handle_t bsh; 229 paddr_t paddr; 230 caddr_t caddr; 231 int error; 232 233 size = round_page(size); 234 235 /* 236 * Allocate buffer from V-RAM area. 237 */ 238 error = bus_space_alloc(sc->sc.iot, PLUM_OHCI_SHMEMBASE, 239 PLUM_OHCI_SHMEMBASE + PLUM_OHCI_SHMEMSIZE - 1, 240 size, OHCI_PAGE_SIZE, OHCI_PAGE_SIZE, 0, 241 (bus_addr_t*)&caddr, &bsh); 242 if (error) 243 return (1); 244 245 pmap_extract(pmap_kernel(), (vaddr_t)caddr, &paddr); 246 247 ps = malloc(sizeof(struct plumohci_shm), M_DEVBUF, M_NOWAIT); 248 if (ps == 0) 249 return (1); 250 251 ps->ps_bsh = bsh; 252 ps->ps_size = segs[0].ds_len = size; 253 ps->ps_paddr = segs[0].ds_addr = paddr; 254 ps->ps_caddr = caddr; 255 256 LIST_INSERT_HEAD(&sc->sc_shm_head, ps, ps_link); 257 258 *rsegs = 1; 259 260 return (0); 261 } 262 263 void 264 __plumohci_dmamem_free(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs) 265 { 266 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 267 struct plumohci_softc *sc = t->_dmamap_chipset_v; 268 struct plumohci_shm *ps; 269 270 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 271 ps = LIST_NEXT(ps, ps_link)) { 272 273 if (ps->ps_paddr == segs[0].ds_addr) { 274 bus_space_free(sc->sc.iot, ps->ps_bsh, ps->ps_size); 275 LIST_REMOVE(ps, ps_link); 276 free(ps, M_DEVBUF); 277 278 return; 279 } 280 } 281 282 panic("__plumohci_dmamem_free: can't find corresponding handle."); 283 /* NOTREACHED */ 284 } 285 286 int 287 __plumohci_dmamem_map(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs, 288 size_t size, caddr_t *kvap, int flags) 289 { 290 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 291 struct plumohci_softc *sc = t->_dmamap_chipset_v; 292 struct plumohci_shm *ps; 293 294 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 295 ps = LIST_NEXT(ps, ps_link)) { 296 if (ps->ps_paddr == segs[0].ds_addr) { 297 298 *kvap = ps->ps_caddr; 299 300 return (0); 301 } 302 } 303 304 return (1); 305 } 306 307 void 308 __plumohci_dmamem_unmap(bus_dma_tag_t t, caddr_t kva, size_t size) 309 { 310 /* nothing to do */ 311 } 312
Indexes created Tue Sep 23 14:10:03 GMT 2025