plumohci.c revision 1.15
1 /* $NetBSD: plumohci.c,v 1.15 2016/04/23 10:15:29 skrll 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 1.15 2016/04/23 10:15:29 skrll 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(device_t, cfdata_t, void *); 69 void plumohci_attach(device_t, device_t, 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(device_t parent, cfdata_t match, void *aux) 124 { 125 /* PLUM2 builtin OHCI module */ 126 127 return 1; 128 } 129 130 void 131 plumohci_attach(device_t parent, device_t self, void *aux) 132 { 133 struct plumohci_softc *sc = device_private(self); 134 struct plum_attach_args *pa = aux; 135 136 sc->sc.sc_dev = self; 137 sc->sc.sc_bus.ub_hcpriv = sc; 138 139 sc->sc.iot = pa->pa_iot; 140 sc->sc.sc_bus.ub_dmatag = &plumohci_bus_dma_tag.bdt; 141 plumohci_bus_dma_tag._dmamap_chipset_v = sc; 142 143 /* Map I/O space */ 144 if (bus_space_map(sc->sc.iot, PLUM_OHCI_REGBASE, OHCI_PAGE_SIZE, 145 0, &sc->sc.ioh)) { 146 printf(": cannot map mem space\n"); 147 return; 148 } 149 150 /* power up */ 151 /* 152 * in the case of PLUM2, UHOSTC uses the VRAM as the shared RAM 153 * so establish power/clock of Video contoroller 154 */ 155 plum_power_establish(pa->pa_pc, PLUM_PWR_EXTPW1); 156 plum_power_establish(pa->pa_pc, PLUM_PWR_USB); 157 158 /* Disable interrupts, so we don't can any spurious ones. */ 159 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 160 OHCI_ALL_INTRS); 161 162 /* master enable */ 163 sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE, 164 IPL_USB, ohci_intr, sc); 165 #if 0 166 /* 167 * enable the clock restart request interrupt 168 * (for USBSUSPEND state) 169 */ 170 sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE, 171 IST_EDGE, IPL_USB, 172 plumohci_intr, sc); 173 #endif 174 /* 175 * Shared memory list. 176 */ 177 LIST_INIT(&sc->sc_shm_head); 178 179 printf("\n"); 180 181 int err = ohci_init(&sc->sc); 182 183 if (err) { 184 printf(": init failed, error=%d\n", err); 185 186 plum_intr_disestablish(pa->pa_pc, sc->sc_ih); 187 plum_intr_disestablish(pa->pa_pc, sc->sc_wakeih); 188 189 return; 190 } 191 192 /* Attach usb device. */ 193 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 194 } 195 196 int 197 plumohci_intr(void *arg) 198 { 199 printf("Plum2 OHCI: wakeup intr\n"); 200 return 0; 201 } 202 203 /* 204 * Plum2 OHCI specific busdma routines. 205 * Plum2 OHCI shared buffer can't allocate on memory 206 * but V-RAM (busspace). 207 */ 208 209 void 210 __plumohci_dmamap_sync(bus_dma_tag_t tx, bus_dmamap_t map, bus_addr_t offset, 211 bus_size_t len, int ops) 212 { 213 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 214 struct plumohci_softc *sc = t->_dmamap_chipset_v; 215 216 /* 217 * Flush the write buffer allocated on the V-RAM. 218 * Accessing any host controller register flushs write buffer 219 */ 220 (void)bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_REVISION); 221 } 222 223 int 224 __plumohci_dmamem_alloc(bus_dma_tag_t tx, bus_size_t size, 225 bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, 226 int nsegs, int *rsegs, int flags) 227 { 228 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 229 struct plumohci_softc *sc = t->_dmamap_chipset_v; 230 struct plumohci_shm *ps; 231 bus_space_handle_t bsh; 232 paddr_t paddr; 233 void *caddr; 234 int error; 235 236 size = round_page(size); 237 238 /* 239 * Allocate buffer from V-RAM area. 240 */ 241 error = bus_space_alloc(sc->sc.iot, PLUM_OHCI_SHMEMBASE, 242 PLUM_OHCI_SHMEMBASE + PLUM_OHCI_SHMEMSIZE - 1, 243 size, OHCI_PAGE_SIZE, 0, 0, 244 (bus_addr_t *)(void *)&caddr, &bsh); 245 if (error) 246 return 1; 247 248 pmap_extract(pmap_kernel(), (vaddr_t)caddr, &paddr); 249 250 ps = malloc(sizeof(struct plumohci_shm), M_DEVBUF, M_NOWAIT); 251 if (ps == 0) 252 return 1; 253 254 ps->ps_bsh = bsh; 255 ps->ps_size = segs[0].ds_len = size; 256 ps->ps_paddr = segs[0].ds_addr = paddr; 257 ps->ps_caddr = caddr; 258 259 LIST_INSERT_HEAD(&sc->sc_shm_head, ps, ps_link); 260 261 *rsegs = 1; 262 263 return 0; 264 } 265 266 void 267 __plumohci_dmamem_free(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs) 268 { 269 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 270 struct plumohci_softc *sc = t->_dmamap_chipset_v; 271 struct plumohci_shm *ps; 272 273 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 274 ps = LIST_NEXT(ps, ps_link)) { 275 276 if (ps->ps_paddr == segs[0].ds_addr) { 277 bus_space_free(sc->sc.iot, ps->ps_bsh, ps->ps_size); 278 LIST_REMOVE(ps, ps_link); 279 free(ps, M_DEVBUF); 280 281 return; 282 } 283 } 284 285 panic("__plumohci_dmamem_free: can't find corresponding handle."); 286 /* NOTREACHED */ 287 } 288 289 int 290 __plumohci_dmamem_map(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs, 291 size_t size, void **kvap, int flags) 292 { 293 struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; 294 struct plumohci_softc *sc = t->_dmamap_chipset_v; 295 struct plumohci_shm *ps; 296 297 for (ps = LIST_FIRST(&sc->sc_shm_head); ps; 298 ps = LIST_NEXT(ps, ps_link)) { 299 if (ps->ps_paddr == segs[0].ds_addr) { 300 301 *kvap = ps->ps_caddr; 302 303 return 0; 304 } 305 } 306 307 return 1; 308 } 309 310 void 311 __plumohci_dmamem_unmap(bus_dma_tag_t t, void *kva, size_t size) 312 { 313 /* nothing to do */ 314 } 315
Indexes created Fri Sep 26 08:10:20 GMT 2025