316 lines
8.2 KiB
C
316 lines
8.2 KiB
C
/* $NetBSD: plumohci.c,v 1.12 2008/04/03 17:04:40 drochner Exp $ */
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/*-
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* Copyright (c) 2000 UCHIYAMA Yasushi
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* Copyright (c) 1999 MAEKAWA Masahide <bishop@rr.iij4u.or.jp>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* USB Open Host Controller driver.
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*
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* OHCI spec: ftp://ftp.compaq.com/pub/supportinformation/papers/hcir1_0a.exe
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* USB spec: http://www.usb.org/developers/data/usb11.pdf
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: plumohci.c,v 1.12 2008/04/03 17:04:40 drochner Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/queue.h>
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/* busdma */
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#include <sys/mbuf.h>
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#include <uvm/uvm_extern.h>
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#include <machine/bus.h>
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#include <machine/bus_dma_hpcmips.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdivar.h>
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#include <dev/usb/usb_mem.h>
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#include <dev/usb/ohcireg.h>
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#include <dev/usb/ohcivar.h>
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#include <hpcmips/tx/tx39var.h>
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#include <hpcmips/dev/plumvar.h>
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#include <hpcmips/dev/plumicuvar.h>
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#include <hpcmips/dev/plumpowervar.h>
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#include <hpcmips/dev/plumohcireg.h>
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int plumohci_match(struct device *, struct cfdata *, void *);
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void plumohci_attach(struct device *, struct device *, void *);
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int plumohci_intr(void *);
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void __plumohci_dmamap_sync(bus_dma_tag_t, bus_dmamap_t,
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bus_addr_t, bus_size_t, int);
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int __plumohci_dmamem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t,
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bus_size_t, bus_dma_segment_t *, int, int *, int);
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void __plumohci_dmamem_free(bus_dma_tag_t, bus_dma_segment_t *, int);
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int __plumohci_dmamem_map(bus_dma_tag_t, bus_dma_segment_t *,
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int, size_t, void **, int);
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void __plumohci_dmamem_unmap(bus_dma_tag_t, void *, size_t);
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struct bus_dma_tag_hpcmips plumohci_bus_dma_tag = {
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{
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NULL,
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{
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_hpcmips_bd_map_create,
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_hpcmips_bd_map_destroy,
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_hpcmips_bd_map_load,
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_hpcmips_bd_map_load_mbuf,
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_hpcmips_bd_map_load_uio,
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_hpcmips_bd_map_load_raw,
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_hpcmips_bd_map_unload,
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__plumohci_dmamap_sync,
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__plumohci_dmamem_alloc,
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__plumohci_dmamem_free,
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__plumohci_dmamem_map,
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__plumohci_dmamem_unmap,
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_hpcmips_bd_mem_mmap,
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},
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},
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NULL,
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};
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struct plumohci_shm {
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bus_space_handle_t ps_bsh;
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paddr_t ps_paddr;
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void * ps_caddr;
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size_t ps_size;
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LIST_ENTRY(plumohci_shm) ps_link;
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};
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struct plumohci_softc {
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struct ohci_softc sc;
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void *sc_ih;
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void *sc_wakeih;
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LIST_HEAD(, plumohci_shm) sc_shm_head;
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};
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CFATTACH_DECL_NEW(plumohci, sizeof(struct plumohci_softc),
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plumohci_match, plumohci_attach, NULL, NULL);
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int
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plumohci_match(struct device *parent, struct cfdata *match, void *aux)
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{
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/* PLUM2 builtin OHCI module */
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return (1);
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}
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void
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plumohci_attach(struct device *parent, struct device *self, void *aux)
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{
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struct plumohci_softc *sc = device_private(self);
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struct plum_attach_args *pa = aux;
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usbd_status r;
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sc->sc.sc_dev = self;
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sc->sc.sc_bus.hci_private = sc;
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sc->sc.iot = pa->pa_iot;
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sc->sc.sc_bus.dmatag = &plumohci_bus_dma_tag.bdt;
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plumohci_bus_dma_tag._dmamap_chipset_v = sc;
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/* Map I/O space */
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if (bus_space_map(sc->sc.iot, PLUM_OHCI_REGBASE, OHCI_PAGE_SIZE,
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0, &sc->sc.ioh)) {
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printf(": cannot map mem space\n");
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return;
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}
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/* power up */
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/*
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* in the case of PLUM2, UHOSTC uses the VRAM as the shared RAM
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* so establish power/clock of Video contoroller
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*/
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plum_power_establish(pa->pa_pc, PLUM_PWR_EXTPW1);
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plum_power_establish(pa->pa_pc, PLUM_PWR_USB);
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/* Disable interrupts, so we don't can any spurious ones. */
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bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
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OHCI_ALL_INTRS);
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/* master enable */
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sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE,
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IPL_USB, ohci_intr, sc);
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#if 0
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/*
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* enable the clock restart request interrupt
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* (for USBSUSPEND state)
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*/
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sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE,
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IST_EDGE, IPL_USB,
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plumohci_intr, sc);
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#endif
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/*
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* Shared memory list.
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*/
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LIST_INIT(&sc->sc_shm_head);
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printf("\n");
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r = ohci_init(&sc->sc);
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if (r != USBD_NORMAL_COMPLETION) {
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printf(": init failed, error=%d\n", r);
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plum_intr_disestablish(pa->pa_pc, sc->sc_ih);
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plum_intr_disestablish(pa->pa_pc, sc->sc_wakeih);
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return;
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}
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/* Attach usb device. */
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sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint);
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}
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int
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plumohci_intr(void *arg)
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{
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printf("Plum2 OHCI: wakeup intr\n");
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return 0;
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}
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/*
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* Plum2 OHCI specific busdma routines.
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* Plum2 OHCI shared buffer can't allocate on memory
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* but V-RAM (busspace).
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*/
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void
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__plumohci_dmamap_sync(bus_dma_tag_t tx, bus_dmamap_t map, bus_addr_t offset,
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bus_size_t len, int ops)
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{
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struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx;
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struct plumohci_softc *sc = t->_dmamap_chipset_v;
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/*
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* Flush the write buffer allocated on the V-RAM.
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* Accessing any host controller register flushs write buffer
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*/
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(void)bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_REVISION);
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}
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int
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__plumohci_dmamem_alloc(bus_dma_tag_t tx, bus_size_t size,
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bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs,
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int nsegs, int *rsegs, int flags)
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{
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struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx;
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struct plumohci_softc *sc = t->_dmamap_chipset_v;
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struct plumohci_shm *ps;
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bus_space_handle_t bsh;
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paddr_t paddr;
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void *caddr;
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int error;
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size = round_page(size);
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/*
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* Allocate buffer from V-RAM area.
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*/
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error = bus_space_alloc(sc->sc.iot, PLUM_OHCI_SHMEMBASE,
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PLUM_OHCI_SHMEMBASE + PLUM_OHCI_SHMEMSIZE - 1,
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size, OHCI_PAGE_SIZE, OHCI_PAGE_SIZE, 0,
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(bus_addr_t *)(void *)&caddr, &bsh);
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if (error)
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return (1);
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pmap_extract(pmap_kernel(), (vaddr_t)caddr, &paddr);
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ps = malloc(sizeof(struct plumohci_shm), M_DEVBUF, M_NOWAIT);
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if (ps == 0)
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return (1);
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ps->ps_bsh = bsh;
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ps->ps_size = segs[0].ds_len = size;
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ps->ps_paddr = segs[0].ds_addr = paddr;
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ps->ps_caddr = caddr;
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LIST_INSERT_HEAD(&sc->sc_shm_head, ps, ps_link);
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*rsegs = 1;
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return (0);
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}
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void
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__plumohci_dmamem_free(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs)
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{
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struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx;
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struct plumohci_softc *sc = t->_dmamap_chipset_v;
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struct plumohci_shm *ps;
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for (ps = LIST_FIRST(&sc->sc_shm_head); ps;
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ps = LIST_NEXT(ps, ps_link)) {
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if (ps->ps_paddr == segs[0].ds_addr) {
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bus_space_free(sc->sc.iot, ps->ps_bsh, ps->ps_size);
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LIST_REMOVE(ps, ps_link);
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free(ps, M_DEVBUF);
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return;
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}
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}
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panic("__plumohci_dmamem_free: can't find corresponding handle.");
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/* NOTREACHED */
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}
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int
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__plumohci_dmamem_map(bus_dma_tag_t tx, bus_dma_segment_t *segs, int nsegs,
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size_t size, void **kvap, int flags)
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{
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struct bus_dma_tag_hpcmips *t = (struct bus_dma_tag_hpcmips *)tx;
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struct plumohci_softc *sc = t->_dmamap_chipset_v;
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struct plumohci_shm *ps;
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for (ps = LIST_FIRST(&sc->sc_shm_head); ps;
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ps = LIST_NEXT(ps, ps_link)) {
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if (ps->ps_paddr == segs[0].ds_addr) {
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*kvap = ps->ps_caddr;
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return (0);
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}
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}
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return (1);
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}
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void
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__plumohci_dmamem_unmap(bus_dma_tag_t t, void *kva, size_t size)
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{
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/* nothing to do */
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}
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