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/* $OpenBSD: cardbus_map.c,v 1.14 2010/03/27 23:36:36 jsg Exp $ */
/* $NetBSD: cardbus_map.c,v 1.10 2000/03/07 00:31:46 mycroft Exp $ */
/*
* Copyright (c) 1999 and 2000
* HAYAKAWA Koichi. 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 ``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 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <dev/cardbus/cardbusvar.h>
#include <dev/pci/pcireg.h> /* XXX */
#if defined DEBUG && !defined CARDBUS_MAP_DEBUG
#define CARDBUS_MAP_DEBUG
#endif
#if defined CARDBUS_MAP_DEBUG
#define STATIC
#define DPRINTF(a) printf a
#else
#ifdef DDB
#define STATIC
#else
#define STATIC static
#endif
#define DPRINTF(a)
#endif
/*
* int cardbus_mapreg_map(struct cardbus_softc *, int, int, pcireg_t,
* int bus_space_tag_t *, bus_space_handle_t *,
* bus_addr_t *, bus_size_t *)
* This function maps bus-space on the value of Base Address
* Register (BAR) indexed by the argument `reg' (the second argument).
* When the value of the BAR is not valid, such as 0x00000000, a new
* address should be allocated for the BAR and new address values is
* written on the BAR.
*/
int
cardbus_mapreg_map(struct cardbus_softc *sc, int func, int reg,
pcireg_t type, int busflags, bus_space_tag_t *tagp,
bus_space_handle_t *handlep, bus_addr_t *basep, bus_size_t *sizep)
{
cardbus_chipset_tag_t cc = sc->sc_cc;
pci_chipset_tag_t pc = sc->sc_pc;
cardbus_function_tag_t cf = sc->sc_cf;
bus_space_tag_t bustag;
rbus_tag_t rbustag;
bus_space_handle_t handle;
bus_addr_t base;
bus_size_t size;
int flags;
int status = 0;
pcitag_t tag = pci_make_tag(pc, sc->sc_bus,
sc->sc_device, func);
DPRINTF(("cardbus_mapreg_map called: %s %x\n", sc->sc_dev.dv_xname,
type));
if (pci_mapreg_info(pc, tag, reg, type, &base, &size, &flags))
status = 1;
if (PCI_MAPREG_TYPE(type) == PCI_MAPREG_TYPE_IO) {
bustag = sc->sc_iot;
rbustag = sc->sc_rbus_iot;
} else {
bustag = sc->sc_memt;
rbustag = sc->sc_rbus_memt;
}
if (status == 0) {
bus_addr_t mask = size - 1;
if (base != 0)
mask = 0xffffffff;
if ((*cf->cardbus_space_alloc)(cc, rbustag, base, size, mask,
size, busflags | flags, &base, &handle)) {
panic("io alloc");
}
}
pci_conf_write(pc, tag, reg, base);
DPRINTF(("cardbus_mapreg_map: physaddr %lx\n", (unsigned long)base));
if (tagp != 0)
*tagp = bustag;
if (handlep != 0)
*handlep = handle;
if (basep != 0)
*basep = base;
if (sizep != 0)
*sizep = size;
return (0);
}
/*
* int cardbus_mapreg_unmap(struct cardbus_softc *sc, int func, int reg,
* bus_space_tag_t tag, bus_space_handle_t handle,
* bus_size_t size)
*
* This function releases bus-space region and close memory or io
* window on the bridge.
*
* Arguments:
* struct cardbus_softc *sc; the pointer to the device structure of cardbus.
* int func; the number of function on the device.
* int reg; the offset of BAR register.
*/
int
cardbus_mapreg_unmap(struct cardbus_softc *sc, int func, int reg,
bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t size)
{
cardbus_chipset_tag_t cc = sc->sc_cc;
pci_chipset_tag_t pc = sc->sc_pc;
cardbus_function_tag_t cf = sc->sc_cf;
int st = 1;
pcitag_t cardbustag;
rbus_tag_t rbustag;
if (sc->sc_iot == tag) {
/* bus space is io space */
DPRINTF(("%s: unmap i/o space\n", sc->sc_dev.dv_xname));
rbustag = sc->sc_rbus_iot;
} else if (sc->sc_memt == tag) {
/* bus space is memory space */
DPRINTF(("%s: unmap mem space\n", sc->sc_dev.dv_xname));
rbustag = sc->sc_rbus_memt;
} else
return (1);
cardbustag = pci_make_tag(pc, sc->sc_bus, sc->sc_device, func);
pci_conf_write(pc, cardbustag, reg, 0);
(*cf->cardbus_space_free)(cc, rbustag, handle, size);
return (st);
}
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