1 /* $NetBSD: plumohci.c,v 1.13 2010/07/20 15:06:43 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 UCHIYAMA Yasushi 5 * Copyright (c) 1999 MAEKAWA Masahide <bishop@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 1.13 2010/07/20 15:06:43 tsutsui 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, void **, int); 79 void __plumohci_dmamem_unmap(bus_dma_tag_t, void *, 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 void * 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_NEW(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 = device_private(self); 134 struct plum_attach_args *pa = aux; 135 usbd_status r; 136 137 sc->sc.sc_dev = self; 138 sc->sc.sc_bus.hci_private = sc; 139 140 sc->sc.iot = pa->pa_iot; 141 sc->sc.sc_bus.dmatag = &plumohci_bus_dma_tag.bdt; 142 plumohci_bus_dma_tag._dmamap_chipset_v = sc; 143 144 /* Map I/O space */ 145 if (bus_space_map(sc->sc.iot, PLUM_OHCI_REGBASE, OHCI_PAGE_SIZE, 146 0, &sc->sc.ioh)) { 147 printf(": cannot map mem space\n"); 148 return; 149 } 150 151 /* power up */ 152 /* 153 * in the case of PLUM2, UHOSTC uses the VRAM as the shared RAM 154 * so establish power/clock of Video contoroller 155 */ 156 plum_power_establish(pa->pa_pc, PLUM_PWR_EXTPW1); 157 plum_power_establish(pa->pa_pc, PLUM_PWR_USB); 158 159 /* Disable interrupts, so we don't can any spurious ones. */ 160 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 161 OHCI_ALL_INTRS); 162 163 /* master enable */ 164 sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE, 165 IPL_USB, ohci_intr, sc); 166 #if 0 167 /* 168 * enable the clock restart request interrupt 169 * (for USBSUSPEND state) 170 */ 171 sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE, 172 IST_EDGE, IPL_USB, 173 plumohci_intr, sc); 174 #endif 175 /* 176 * Shared memory list. 177 */ 178 LIST_INIT(&sc->sc_shm_head); 179 180 printf("\n"); 181 182 r = ohci_init(&sc->sc); 183 184 if (r != USBD_NORMAL_COMPLETION) { 185 printf(": init failed, error=%d\n", r); 186 187 plum_intr_disestablish(pa->pa_pc, sc->sc_ih); 188 plum_intr_disestablish(pa->pa_pc, sc->sc_wakeih); 189 190 return; 191 } 192 193 /* Attach usb device. */ 194 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 195 } 196 197 int 198 plumohci_intr(void *arg) 199 { 200 printf("Plum2 OHCI: wakeup intr\n"); 201 return 0; 202 } 203 204 /* 205 * Plum2 OHCI specific busdma routines. 206 * Plum2 OHCI shared buffer can't allocate on memory 207 * but V-RAM (busspace). 208 */ 209 210 void 211 __plumohci_dmamap_sync(bus_dma_tag_t tx, bus_dmamap_t map, bus_addr_t offset, 212 bus_size_t len, int ops) 213 { 214 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 215 struct plumohci_softc *sc = t->_dmamap_chipset_v; 216 217 /* 218 * Flush the write buffer allocated on the V-RAM. 219 * Accessing any host controller register flushs write buffer 220 */ 221 (void)bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_REVISION); 222 } 223 224 int 225 __plumohci_dmamem_alloc(bus_dma_tag_t tx, bus_size_t size, 226 bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, 227 int nsegs, int *rsegs, int flags) 228 { 229 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 230 struct plumohci_softc *sc = t->_dmamap_chipset_v; 231 struct plumohci_shm *ps; 232 bus_space_handle_t bsh; 233 paddr_t paddr; 234 void *caddr; 235 int error; 236 237 size = round_page(size); 238 239 /* 240 * Allocate buffer from V-RAM area. 241 */ 242 error = bus_space_alloc(sc->sc.iot, PLUM_OHCI_SHMEMBASE, 243 PLUM_OHCI_SHMEMBASE + PLUM_OHCI_SHMEMSIZE - 1, 244 size, OHCI_PAGE_SIZE, 0, 0, 245 (bus_addr_t *)(void *)&caddr, &bsh); 246 if (error) 247 return (1); 248 249 pmap_extract(pmap_kernel(), (vaddr_t)caddr, &paddr); 250 251 ps = malloc(sizeof(struct plumohci_shm), M_DEVBUF, M_NOWAIT); 252 if (ps == 0) 253 return (1); 254 255 ps->ps_bsh = bsh; 256 ps->ps_size = segs[0].ds_len = size; 257 ps->ps_paddr = segs[0].ds_addr = paddr; 258 ps->ps_caddr = caddr; 259 260 LIST_INSERT_HEAD(&sc->sc_shm_head, ps, ps_link); 261 262 *rsegs = 1; 263 264 return (0); 265 } 266 267 void 268 __plumohci_dmamem_free(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs) 269 { 270 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 271 struct plumohci_softc *sc = t->_dmamap_chipset_v; 272 struct plumohci_shm *ps; 273 274 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 275 ps = LIST_NEXT(ps, ps_link)) { 276 277 if (ps->ps_paddr == segs[0].ds_addr) { 278 bus_space_free(sc->sc.iot, ps->ps_bsh, ps->ps_size); 279 LIST_REMOVE(ps, ps_link); 280 free(ps, M_DEVBUF); 281 282 return; 283 } 284 } 285 286 panic("__plumohci_dmamem_free: can't find corresponding handle."); 287 /* NOTREACHED */ 288 } 289 290 int 291 __plumohci_dmamem_map(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs, 292 size_t size, void **kvap, int flags) 293 { 294 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 295 struct plumohci_softc *sc = t->_dmamap_chipset_v; 296 struct plumohci_shm *ps; 297 298 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 299 ps = LIST_NEXT(ps, ps_link)) { 300 if (ps->ps_paddr == segs[0].ds_addr) { 301 302 *kvap = ps->ps_caddr; 303 304 return (0); 305 } 306 } 307 308 return (1); 309 } 310 311 void 312 __plumohci_dmamem_unmap(bus_dma_tag_t t, void *kva, size_t size) 313 { 314 /* nothing to do */ 315 } 316