plumohci.c revision 1.4
1 /* $NetBSD: plumohci.c,v 1.4 2001/09/15 12:47:06 uch 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 #define _HPCMIPS_BUS_DMA_PRIVATE 49 #include <machine/bus.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 hpcmips_bus_dma_tag plumohci_bus_dma_tag = { 79 _bus_dmamap_create, 80 _bus_dmamap_destroy, 81 _bus_dmamap_load, 82 _bus_dmamap_load_mbuf, 83 _bus_dmamap_load_uio, 84 _bus_dmamap_load_raw, 85 _bus_dmamap_unload, 86 __plumohci_dmamap_sync, 87 __plumohci_dmamem_alloc, 88 __plumohci_dmamem_free, 89 __plumohci_dmamem_map, 90 __plumohci_dmamem_unmap, 91 _bus_dmamem_mmap, 92 NULL 93 }; 94 95 struct plumohci_shm { 96 bus_space_handle_t ps_bsh; 97 paddr_t ps_paddr; 98 caddr_t ps_caddr; 99 size_t ps_size; 100 LIST_ENTRY(plumohci_shm) ps_link; 101 }; 102 103 struct plumohci_softc { 104 struct ohci_softc sc; 105 void *sc_ih; 106 void *sc_wakeih; 107 108 LIST_HEAD(, plumohci_shm) sc_shm_head; 109 }; 110 111 struct cfattach plumohci_ca = { 112 sizeof(struct plumohci_softc), plumohci_match, plumohci_attach, 113 }; 114 115 int 116 plumohci_match(struct device *parent, struct cfdata *match, void *aux) 117 { 118 /* PLUM2 builtin OHCI module */ 119 120 return (1); 121 } 122 123 void 124 plumohci_attach(struct device *parent, struct device *self, void *aux) 125 { 126 struct plumohci_softc *sc = (struct plumohci_softc *)self; 127 struct plum_attach_args *pa = aux; 128 usbd_status r; 129 130 sc->sc.iot = pa->pa_iot; 131 sc->sc.sc_bus.dmatag = &plumohci_bus_dma_tag; 132 sc->sc.sc_bus.dmatag->_dmamap_chipset_v = sc; 133 134 /* Map I/O space */ 135 if (bus_space_map(sc->sc.iot, PLUM_OHCI_REGBASE, OHCI_PAGE_SIZE, 136 0, &sc->sc.ioh)) { 137 printf(": cannot map mem space\n"); 138 return; 139 } 140 141 /* power up */ 142 /* 143 * in the case of PLUM2, UHOSTC uses the VRAM as the shared RAM 144 * so establish power/clock of Video contoroller 145 */ 146 plum_power_establish(pa->pa_pc, PLUM_PWR_EXTPW1); 147 plum_power_establish(pa->pa_pc, PLUM_PWR_USB); 148 149 /* Disable interrupts, so we don't can any spurious ones. */ 150 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 151 OHCI_ALL_INTRS); 152 153 /* master enable */ 154 sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE, 155 IPL_USB, ohci_intr, sc); 156 #if 0 157 /* 158 * enable the clock restart request interrupt 159 * (for USBSUSPEND state) 160 */ 161 sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE, 162 IST_EDGE, IPL_USB, 163 plumohci_intr, sc); 164 #endif 165 /* 166 * Shared memory list. 167 */ 168 LIST_INIT(&sc->sc_shm_head); 169 170 printf("\n"); 171 172 r = ohci_init(&sc->sc); 173 174 if (r != USBD_NORMAL_COMPLETION) { 175 printf(": init failed, error=%d\n", r); 176 177 plum_intr_disestablish(pa->pa_pc, sc->sc_ih); 178 plum_intr_disestablish(pa->pa_pc, sc->sc_wakeih); 179 180 return; 181 } 182 183 /* Attach usb device. */ 184 sc->sc.sc_child = config_found((void *) sc, &sc->sc.sc_bus, 185 usbctlprint); 186 } 187 188 int 189 plumohci_intr(void *arg) 190 { 191 printf("Plum2 OHCI: wakeup intr\n"); 192 return 0; 193 } 194 195 /* 196 * Plum2 OHCI specific busdma routines. 197 * Plum2 OHCI shared buffer can't allocate on memory 198 * but V-RAM (busspace). 199 */ 200 201 void 202 __plumohci_dmamap_sync(bus_dma_tag_t t, bus_dmamap_t map, bus_addr_t offset, 203 bus_size_t len, int ops) 204 { 205 struct plumohci_softc *sc = t->_dmamap_chipset_v; 206 207 /* 208 * Flush the write buffer allocated on the V-RAM. 209 * Accessing any host controller register flushs write buffer 210 */ 211 (void)bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_REVISION); 212 } 213 214 int 215 __plumohci_dmamem_alloc(bus_dma_tag_t t, bus_size_t size, bus_size_t alignment, 216 bus_size_t boundary, bus_dma_segment_t *segs, int nsegs, int *rsegs, 217 int flags) 218 { 219 struct plumohci_softc *sc = t->_dmamap_chipset_v; 220 struct plumohci_shm *ps; 221 bus_space_handle_t bsh; 222 paddr_t paddr; 223 caddr_t caddr; 224 int error; 225 226 size = round_page(size); 227 228 /* 229 * Allocate buffer from V-RAM area. 230 */ 231 error = bus_space_alloc(sc->sc.iot, PLUM_OHCI_SHMEMBASE, 232 PLUM_OHCI_SHMEMBASE + PLUM_OHCI_SHMEMSIZE - 1, 233 size, OHCI_PAGE_SIZE, OHCI_PAGE_SIZE, 0, 234 (bus_addr_t*)&caddr, &bsh); 235 if (error) 236 return (1); 237 238 pmap_extract(pmap_kernel(), (vaddr_t)caddr, &paddr); 239 240 ps = malloc(sizeof(struct plumohci_shm), M_DEVBUF, M_NOWAIT); 241 if (ps == 0) 242 return (1); 243 244 ps->ps_bsh = bsh; 245 ps->ps_size = segs[0].ds_len = size; 246 ps->ps_paddr = segs[0].ds_addr = paddr; 247 ps->ps_caddr = caddr; 248 249 LIST_INSERT_HEAD(&sc->sc_shm_head, ps, ps_link); 250 251 *rsegs = 1; 252 253 return (0); 254 } 255 256 void 257 __plumohci_dmamem_free(bus_dma_tag_t t, bus_dma_segment_t *segs, int nsegs) 258 { 259 struct plumohci_softc *sc = t->_dmamap_chipset_v; 260 struct plumohci_shm *ps; 261 262 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 263 ps = LIST_NEXT(ps, ps_link)) { 264 265 if (ps->ps_paddr == segs[0].ds_addr) { 266 bus_space_free(sc->sc.iot, ps->ps_bsh, ps->ps_size); 267 LIST_REMOVE(ps, ps_link); 268 free(ps, M_DEVBUF); 269 270 return; 271 } 272 } 273 274 panic("__plumohci_dmamem_free: can't find corresponding handle."); 275 /* NOTREACHED */ 276 } 277 278 int 279 __plumohci_dmamem_map(bus_dma_tag_t t, bus_dma_segment_t *segs, int nsegs, 280 size_t size, caddr_t *kvap, int flags) 281 { 282 struct plumohci_softc *sc = t->_dmamap_chipset_v; 283 struct plumohci_shm *ps; 284 285 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 286 ps = LIST_NEXT(ps, ps_link)) { 287 if (ps->ps_paddr == segs[0].ds_addr) { 288 289 *kvap = ps->ps_caddr; 290 291 return (0); 292 } 293 } 294 295 return (1); 296 } 297 298 void 299 __plumohci_dmamem_unmap(bus_dma_tag_t t, caddr_t kva, size_t size) 300 { 301 /* nothing to do */ 302 } 303
Indexes created Tue Sep 23 23:09:58 GMT 2025