plumohci.c revision 1.8
1 /* $NetBSD: plumohci.c,v 1.8 2003/07/15 02:29:30 lukem 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/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: plumohci.c,v 1.8 2003/07/15 02:29:30 lukem Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/device.h> 44 #include <sys/proc.h> 45 #include <sys/queue.h> 46 47 /* busdma */ 48 #include <sys/mbuf.h> 49 #include <uvm/uvm_extern.h> 50 51 #include <machine/bus.h> 52 #include <machine/bus_dma_hpcmips.h> 53 54 #include <dev/usb/usb.h> 55 #include <dev/usb/usbdi.h> 56 #include <dev/usb/usbdivar.h> 57 #include <dev/usb/usb_mem.h> 58 59 #include <dev/usb/ohcireg.h> 60 #include <dev/usb/ohcivar.h> 61 62 #include <hpcmips/tx/tx39var.h> 63 #include <hpcmips/dev/plumvar.h> 64 #include <hpcmips/dev/plumicuvar.h> 65 #include <hpcmips/dev/plumpowervar.h> 66 #include <hpcmips/dev/plumohcireg.h> 67 68 int plumohci_match(struct device *, struct cfdata *, void *); 69 void plumohci_attach(struct device *, struct device *, void *); 70 int plumohci_intr(void *); 71 72 void __plumohci_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, 73 bus_addr_t, bus_size_t, int); 74 int __plumohci_dmamem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t, 75 bus_size_t, bus_dma_segment_t *, int, int *, int); 76 void __plumohci_dmamem_free(bus_dma_tag_t, bus_dma_segment_t *, int); 77 int __plumohci_dmamem_map(bus_dma_tag_t, bus_dma_segment_t *, 78 int, size_t, caddr_t *, int); 79 void __plumohci_dmamem_unmap(bus_dma_tag_t, caddr_t, size_t); 80 81 struct bus_dma_tag_hpcmips plumohci_bus_dma_tag = { 82 { 83 NULL, 84 { 85 _hpcmips_bd_map_create, 86 _hpcmips_bd_map_destroy, 87 _hpcmips_bd_map_load, 88 _hpcmips_bd_map_load_mbuf, 89 _hpcmips_bd_map_load_uio, 90 _hpcmips_bd_map_load_raw, 91 _hpcmips_bd_map_unload, 92 __plumohci_dmamap_sync, 93 __plumohci_dmamem_alloc, 94 __plumohci_dmamem_free, 95 __plumohci_dmamem_map, 96 __plumohci_dmamem_unmap, 97 _hpcmips_bd_mem_mmap, 98 }, 99 }, 100 NULL, 101 }; 102 103 struct plumohci_shm { 104 bus_space_handle_t ps_bsh; 105 paddr_t ps_paddr; 106 caddr_t ps_caddr; 107 size_t ps_size; 108 LIST_ENTRY(plumohci_shm) ps_link; 109 }; 110 111 struct plumohci_softc { 112 struct ohci_softc sc; 113 void *sc_ih; 114 void *sc_wakeih; 115 116 LIST_HEAD(, plumohci_shm) sc_shm_head; 117 }; 118 119 CFATTACH_DECL(plumohci, sizeof(struct plumohci_softc), 120 plumohci_match, plumohci_attach, NULL, NULL); 121 122 int 123 plumohci_match(struct device *parent, struct cfdata *match, void *aux) 124 { 125 /* PLUM2 builtin OHCI module */ 126 127 return (1); 128 } 129 130 void 131 plumohci_attach(struct device *parent, struct device *self, void *aux) 132 { 133 struct plumohci_softc *sc = (struct plumohci_softc *)self; 134 struct plum_attach_args *pa = aux; 135 usbd_status r; 136 137 sc->sc.iot = pa->pa_iot; 138 sc->sc.sc_bus.dmatag = &plumohci_bus_dma_tag.bdt; 139 plumohci_bus_dma_tag._dmamap_chipset_v = sc; 140 141 /* Map I/O space */ 142 if (bus_space_map(sc->sc.iot, PLUM_OHCI_REGBASE, OHCI_PAGE_SIZE, 143 0, &sc->sc.ioh)) { 144 printf(": cannot map mem space\n"); 145 return; 146 } 147 148 /* power up */ 149 /* 150 * in the case of PLUM2, UHOSTC uses the VRAM as the shared RAM 151 * so establish power/clock of Video contoroller 152 */ 153 plum_power_establish(pa->pa_pc, PLUM_PWR_EXTPW1); 154 plum_power_establish(pa->pa_pc, PLUM_PWR_USB); 155 156 /* Disable interrupts, so we don't can any spurious ones. */ 157 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 158 OHCI_ALL_INTRS); 159 160 /* master enable */ 161 sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE, 162 IPL_USB, ohci_intr, sc); 163 #if 0 164 /* 165 * enable the clock restart request interrupt 166 * (for USBSUSPEND state) 167 */ 168 sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE, 169 IST_EDGE, IPL_USB, 170 plumohci_intr, sc); 171 #endif 172 /* 173 * Shared memory list. 174 */ 175 LIST_INIT(&sc->sc_shm_head); 176 177 printf("\n"); 178 179 r = ohci_init(&sc->sc); 180 181 if (r != USBD_NORMAL_COMPLETION) { 182 printf(": init failed, error=%d\n", r); 183 184 plum_intr_disestablish(pa->pa_pc, sc->sc_ih); 185 plum_intr_disestablish(pa->pa_pc, sc->sc_wakeih); 186 187 return; 188 } 189 190 /* Attach usb device. */ 191 sc->sc.sc_child = config_found((void *) sc, &sc->sc.sc_bus, 192 usbctlprint); 193 } 194 195 int 196 plumohci_intr(void *arg) 197 { 198 printf("Plum2 OHCI: wakeup intr\n"); 199 return 0; 200 } 201 202 /* 203 * Plum2 OHCI specific busdma routines. 204 * Plum2 OHCI shared buffer can't allocate on memory 205 * but V-RAM (busspace). 206 */ 207 208 void 209 __plumohci_dmamap_sync(bus_dma_tag_t tx, bus_dmamap_t map, bus_addr_t offset, 210 bus_size_t len, int ops) 211 { 212 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 213 struct plumohci_softc *sc = t->_dmamap_chipset_v; 214 215 /* 216 * Flush the write buffer allocated on the V-RAM. 217 * Accessing any host controller register flushs write buffer 218 */ 219 (void)bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_REVISION); 220 } 221 222 int 223 __plumohci_dmamem_alloc(bus_dma_tag_t tx, bus_size_t size, 224 bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, 225 int nsegs, int *rsegs, int flags) 226 { 227 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 228 struct plumohci_softc *sc = t->_dmamap_chipset_v; 229 struct plumohci_shm *ps; 230 bus_space_handle_t bsh; 231 paddr_t paddr; 232 caddr_t caddr; 233 int error; 234 235 size = round_page(size); 236 237 /* 238 * Allocate buffer from V-RAM area. 239 */ 240 error = bus_space_alloc(sc->sc.iot, PLUM_OHCI_SHMEMBASE, 241 PLUM_OHCI_SHMEMBASE + PLUM_OHCI_SHMEMSIZE - 1, 242 size, OHCI_PAGE_SIZE, OHCI_PAGE_SIZE, 0, 243 (bus_addr_t*)&caddr, &bsh); 244 if (error) 245 return (1); 246 247 pmap_extract(pmap_kernel(), (vaddr_t)caddr, &paddr); 248 249 ps = malloc(sizeof(struct plumohci_shm), M_DEVBUF, M_NOWAIT); 250 if (ps == 0) 251 return (1); 252 253 ps->ps_bsh = bsh; 254 ps->ps_size = segs[0].ds_len = size; 255 ps->ps_paddr = segs[0].ds_addr = paddr; 256 ps->ps_caddr = caddr; 257 258 LIST_INSERT_HEAD(&sc->sc_shm_head, ps, ps_link); 259 260 *rsegs = 1; 261 262 return (0); 263 } 264 265 void 266 __plumohci_dmamem_free(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs) 267 { 268 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 269 struct plumohci_softc *sc = t->_dmamap_chipset_v; 270 struct plumohci_shm *ps; 271 272 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 273 ps = LIST_NEXT(ps, ps_link)) { 274 275 if (ps->ps_paddr == segs[0].ds_addr) { 276 bus_space_free(sc->sc.iot, ps->ps_bsh, ps->ps_size); 277 LIST_REMOVE(ps, ps_link); 278 free(ps, M_DEVBUF); 279 280 return; 281 } 282 } 283 284 panic("__plumohci_dmamem_free: can't find corresponding handle."); 285 /* NOTREACHED */ 286 } 287 288 int 289 __plumohci_dmamem_map(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs, 290 size_t size, caddr_t *kvap, int flags) 291 { 292 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 293 struct plumohci_softc *sc = t->_dmamap_chipset_v; 294 struct plumohci_shm *ps; 295 296 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 297 ps = LIST_NEXT(ps, ps_link)) { 298 if (ps->ps_paddr == segs[0].ds_addr) { 299 300 *kvap = ps->ps_caddr; 301 302 return (0); 303 } 304 } 305 306 return (1); 307 } 308 309 void 310 __plumohci_dmamem_unmap(bus_dma_tag_t t, caddr_t kva, size_t size) 311 { 312 /* nothing to do */ 313 } 314
Indexes created Tue Sep 23 07:09:52 GMT 2025