/* $NetBSD: plumohci.c,v 1.12 2008/04/03 17:04:40 drochner Exp $ */ /*- * Copyright (c) 2000 UCHIYAMA Yasushi * Copyright (c) 1999 MAEKAWA Masahide * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * USB Open Host Controller driver. * * OHCI spec: ftp://ftp.compaq.com/pub/supportinformation/papers/hcir1_0a.exe * USB spec: http://www.usb.org/developers/data/usb11.pdf */ #include __KERNEL_RCSID(0, "$NetBSD: plumohci.c,v 1.12 2008/04/03 17:04:40 drochner Exp $"); #include #include #include #include #include #include /* busdma */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include int plumohci_match(struct device *, struct cfdata *, void *); void plumohci_attach(struct device *, struct device *, void *); int plumohci_intr(void *); void __plumohci_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t, bus_size_t, int); int __plumohci_dmamem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t, bus_dma_segment_t *, int, int *, int); void __plumohci_dmamem_free(bus_dma_tag_t, bus_dma_segment_t *, int); int __plumohci_dmamem_map(bus_dma_tag_t, bus_dma_segment_t *, int, size_t, void **, int); void __plumohci_dmamem_unmap(bus_dma_tag_t, void *, size_t); struct bus_dma_tag_hpcmips plumohci_bus_dma_tag = { { NULL, { _hpcmips_bd_map_create, _hpcmips_bd_map_destroy, _hpcmips_bd_map_load, _hpcmips_bd_map_load_mbuf, _hpcmips_bd_map_load_uio, _hpcmips_bd_map_load_raw, _hpcmips_bd_map_unload, __plumohci_dmamap_sync, __plumohci_dmamem_alloc, __plumohci_dmamem_free, __plumohci_dmamem_map, __plumohci_dmamem_unmap, _hpcmips_bd_mem_mmap, }, }, NULL, }; struct plumohci_shm { bus_space_handle_t ps_bsh; paddr_t ps_paddr; void * ps_caddr; size_t ps_size; LIST_ENTRY(plumohci_shm) ps_link; }; struct plumohci_softc { struct ohci_softc sc; void *sc_ih; void *sc_wakeih; LIST_HEAD(, plumohci_shm) sc_shm_head; }; CFATTACH_DECL_NEW(plumohci, sizeof(struct plumohci_softc), plumohci_match, plumohci_attach, NULL, NULL); int plumohci_match(struct device *parent, struct cfdata *match, void *aux) { /* PLUM2 builtin OHCI module */ return (1); } void plumohci_attach(struct device *parent, struct device *self, void *aux) { struct plumohci_softc *sc = device_private(self); struct plum_attach_args *pa = aux; usbd_status r; sc->sc.sc_dev = self; sc->sc.sc_bus.hci_private = sc; sc->sc.iot = pa->pa_iot; sc->sc.sc_bus.dmatag = &plumohci_bus_dma_tag.bdt; plumohci_bus_dma_tag._dmamap_chipset_v = sc; /* Map I/O space */ if (bus_space_map(sc->sc.iot, PLUM_OHCI_REGBASE, OHCI_PAGE_SIZE, 0, &sc->sc.ioh)) { printf(": cannot map mem space\n"); return; } /* power up */ /* * in the case of PLUM2, UHOSTC uses the VRAM as the shared RAM * so establish power/clock of Video contoroller */ plum_power_establish(pa->pa_pc, PLUM_PWR_EXTPW1); plum_power_establish(pa->pa_pc, PLUM_PWR_USB); /* Disable interrupts, so we don't can any spurious ones. */ bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS); /* master enable */ sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE, IPL_USB, ohci_intr, sc); #if 0 /* * enable the clock restart request interrupt * (for USBSUSPEND state) */ sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE, IST_EDGE, IPL_USB, plumohci_intr, sc); #endif /* * Shared memory list. */ LIST_INIT(&sc->sc_shm_head); printf("\n"); r = ohci_init(&sc->sc); if (r != USBD_NORMAL_COMPLETION) { printf(": init failed, error=%d\n", r); plum_intr_disestablish(pa->pa_pc, sc->sc_ih); plum_intr_disestablish(pa->pa_pc, sc->sc_wakeih); return; } /* Attach usb device. */ sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); } int plumohci_intr(void *arg) { printf("Plum2 OHCI: wakeup intr\n"); return 0; } /* * Plum2 OHCI specific busdma routines. * Plum2 OHCI shared buffer can't allocate on memory * but V-RAM (busspace). */ void __plumohci_dmamap_sync(bus_dma_tag_t tx, bus_dmamap_t map, bus_addr_t offset, bus_size_t len, int ops) { struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; struct plumohci_softc *sc = t->_dmamap_chipset_v; /* * Flush the write buffer allocated on the V-RAM. * Accessing any host controller register flushs write buffer */ (void)bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_REVISION); } int __plumohci_dmamem_alloc(bus_dma_tag_t tx, bus_size_t size, bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags) { struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; struct plumohci_softc *sc = t->_dmamap_chipset_v; struct plumohci_shm *ps; bus_space_handle_t bsh; paddr_t paddr; void *caddr; int error; size = round_page(size); /* * Allocate buffer from V-RAM area. */ error = bus_space_alloc(sc->sc.iot, PLUM_OHCI_SHMEMBASE, PLUM_OHCI_SHMEMBASE + PLUM_OHCI_SHMEMSIZE - 1, size, OHCI_PAGE_SIZE, OHCI_PAGE_SIZE, 0, (bus_addr_t *)(void *)&caddr, &bsh); if (error) return (1); pmap_extract(pmap_kernel(), (vaddr_t)caddr, &paddr); ps = malloc(sizeof(struct plumohci_shm), M_DEVBUF, M_NOWAIT); if (ps == 0) return (1); ps->ps_bsh = bsh; ps->ps_size = segs[0].ds_len = size; ps->ps_paddr = segs[0].ds_addr = paddr; ps->ps_caddr = caddr; LIST_INSERT_HEAD(&sc->sc_shm_head, ps, ps_link); *rsegs = 1; return (0); } void __plumohci_dmamem_free(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs) { struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; struct plumohci_softc *sc = t->_dmamap_chipset_v; struct plumohci_shm *ps; for (ps = LIST_FIRST(&sc->sc_shm_head); ps; ps = LIST_NEXT(ps, ps_link)) { if (ps->ps_paddr == segs[0].ds_addr) { bus_space_free(sc->sc.iot, ps->ps_bsh, ps->ps_size); LIST_REMOVE(ps, ps_link); free(ps, M_DEVBUF); return; } } panic("__plumohci_dmamem_free: can't find corresponding handle."); /* NOTREACHED */ } int __plumohci_dmamem_map(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs, size_t size, void **kvap, int flags) { struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx; struct plumohci_softc *sc = t->_dmamap_chipset_v; struct plumohci_shm *ps; for (ps = LIST_FIRST(&sc->sc_shm_head); ps; ps = LIST_NEXT(ps, ps_link)) { if (ps->ps_paddr == segs[0].ds_addr) { *kvap = ps->ps_caddr; return (0); } } return (1); } void __plumohci_dmamem_unmap(bus_dma_tag_t t, void *kva, size_t size) { /* nothing to do */ }