NetBSD-5.0.2/sys/arch/hpcmips/dev/plumohci.c
/* $NetBSD: plumohci.c,v 1.12 2008/04/03 17:04:40 drochner Exp $ */
/*-
* Copyright (c) 2000 UCHIYAMA Yasushi
* Copyright (c) 1999 MAEKAWA Masahide <bishop@rr.iij4u.or.jp>
* 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: plumohci.c,v 1.12 2008/04/03 17:04:40 drochner Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/queue.h>
/* busdma */
#include <sys/mbuf.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <machine/bus_dma_hpcmips.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#include <dev/usb/ohcireg.h>
#include <dev/usb/ohcivar.h>
#include <hpcmips/tx/tx39var.h>
#include <hpcmips/dev/plumvar.h>
#include <hpcmips/dev/plumicuvar.h>
#include <hpcmips/dev/plumpowervar.h>
#include <hpcmips/dev/plumohcireg.h>
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 */
}