freebsd-dev/sys/sparc64/pci/ofw_pci.c
Oleksandr Tymoshenko 14131c0ba4 Use OF_prop_free instead of direct call to free(9)
Reviewed by:	marius
2016-05-18 23:39:31 +00:00

407 lines
11 KiB
C

/*-
* Copyright (c) 1999, 2000 Matthew R. Green
* Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>
* Copyright (c) 2005 - 2015 by Marius Strobl <marius@FreeBSD.org>
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*
* from: NetBSD: psycho.c,v 1.35 2001/09/10 16:17:06 eeh Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ofw_pci.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/rman.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_pci.h>
#include <dev/ofw/openfirm.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/asi.h>
#include <machine/bus.h>
#include <machine/bus_private.h>
#include <machine/cpufunc.h>
#include <machine/fsr.h>
#include <machine/resource.h>
#include <sparc64/pci/ofw_pci.h>
int
ofw_pci_attach_common(device_t dev, bus_dma_tag_t dmat, u_long iosize,
u_long memsize)
{
struct ofw_pci_softc *sc;
struct ofw_pci_ranges *range;
phandle_t node;
uint32_t prop_array[2];
u_int i, j, nrange;
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
sc->sc_node = node;
sc->sc_pci_dmat = dmat;
/* Initialize memory and I/O rmans. */
sc->sc_pci_io_rman.rm_type = RMAN_ARRAY;
sc->sc_pci_io_rman.rm_descr = "PCI I/O Ports";
if (rman_init(&sc->sc_pci_io_rman) != 0 ||
rman_manage_region(&sc->sc_pci_io_rman, 0, iosize) != 0) {
device_printf(dev, "failed to set up I/O rman\n");
return (ENXIO);
}
sc->sc_pci_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_pci_mem_rman.rm_descr = "PCI Memory";
if (rman_init(&sc->sc_pci_mem_rman) != 0 ||
rman_manage_region(&sc->sc_pci_mem_rman, 0, memsize) != 0) {
device_printf(dev, "failed to set up memory rman\n");
return (ENXIO);
}
/*
* Find the addresses of the various bus spaces. The physical
* start addresses of the ranges are the configuration, I/O and
* memory handles. There should not be multiple ones of one kind.
*/
nrange = OF_getprop_alloc(node, "ranges", sizeof(*range),
(void **)&range);
for (i = 0; i < nrange; i++) {
j = OFW_PCI_RANGE_CS(&range[i]);
if (sc->sc_pci_bh[j] != 0) {
device_printf(dev, "duplicate range for space %d\n",
j);
OF_prop_free(range);
return (EINVAL);
}
sc->sc_pci_bh[j] = OFW_PCI_RANGE_PHYS(&range[i]);
}
OF_prop_free(range);
/*
* Make sure that the expected ranges are actually present.
* The OFW_PCI_CS_MEM64 one is not currently used.
*/
if (sc->sc_pci_bh[OFW_PCI_CS_CONFIG] == 0) {
device_printf(dev, "missing CONFIG range\n");
return (ENXIO);
}
if (sc->sc_pci_bh[OFW_PCI_CS_IO] == 0) {
device_printf(dev, "missing IO range\n");
return (ENXIO);
}
if (sc->sc_pci_bh[OFW_PCI_CS_MEM32] == 0) {
device_printf(dev, "missing MEM32 range\n");
return (ENXIO);
}
/* Allocate our tags. */
sc->sc_pci_iot = sparc64_alloc_bus_tag(NULL, PCI_IO_BUS_SPACE);
if (sc->sc_pci_iot == NULL) {
device_printf(dev, "could not allocate PCI I/O tag\n");
return (ENXIO);
}
sc->sc_pci_cfgt = sparc64_alloc_bus_tag(NULL, PCI_CONFIG_BUS_SPACE);
if (sc->sc_pci_cfgt == NULL) {
device_printf(dev,
"could not allocate PCI configuration space tag\n");
return (ENXIO);
}
/*
* Get the bus range from the firmware.
*/
i = OF_getprop(node, "bus-range", (void *)prop_array,
sizeof(prop_array));
if (i == -1) {
device_printf(dev, "could not get bus-range\n");
return (ENXIO);
}
if (i != sizeof(prop_array)) {
device_printf(dev, "broken bus-range (%d)", i);
return (EINVAL);
}
sc->sc_pci_secbus = prop_array[0];
sc->sc_pci_subbus = prop_array[1];
if (bootverbose != 0)
device_printf(dev, "bus range %u to %u; PCI bus %d\n",
sc->sc_pci_secbus, sc->sc_pci_subbus, sc->sc_pci_secbus);
ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(ofw_pci_intr_t));
return (0);
}
uint32_t
ofw_pci_read_config_common(device_t dev, u_int regmax, u_long offset,
u_int bus, u_int slot, u_int func, u_int reg, int width)
{
struct ofw_pci_softc *sc;
bus_space_handle_t bh;
uint32_t r, wrd;
int i;
uint16_t shrt;
uint8_t byte;
sc = device_get_softc(dev);
if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus ||
slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > regmax)
return (-1);
bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG];
switch (width) {
case 1:
i = bus_space_peek_1(sc->sc_pci_cfgt, bh, offset, &byte);
r = byte;
break;
case 2:
i = bus_space_peek_2(sc->sc_pci_cfgt, bh, offset, &shrt);
r = shrt;
break;
case 4:
i = bus_space_peek_4(sc->sc_pci_cfgt, bh, offset, &wrd);
r = wrd;
break;
default:
panic("%s: bad width %d", __func__, width);
/* NOTREACHED */
}
if (i) {
#ifdef OFW_PCI_DEBUG
printf("%s: read data error reading: %d.%d.%d: 0x%x\n",
__func__, bus, slot, func, reg);
#endif
r = -1;
}
return (r);
}
void
ofw_pci_write_config_common(device_t dev, u_int regmax, u_long offset,
u_int bus, u_int slot, u_int func, u_int reg, uint32_t val, int width)
{
struct ofw_pci_softc *sc;
bus_space_handle_t bh;
sc = device_get_softc(dev);
if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus ||
slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > regmax)
return;
bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG];
switch (width) {
case 1:
bus_space_write_1(sc->sc_pci_cfgt, bh, offset, val);
break;
case 2:
bus_space_write_2(sc->sc_pci_cfgt, bh, offset, val);
break;
case 4:
bus_space_write_4(sc->sc_pci_cfgt, bh, offset, val);
break;
default:
panic("%s: bad width %d", __func__, width);
/* NOTREACHED */
}
}
ofw_pci_intr_t
ofw_pci_route_interrupt_common(device_t bridge, device_t dev, int pin)
{
struct ofw_pci_softc *sc;
struct ofw_pci_register reg;
ofw_pci_intr_t pintr, mintr;
sc = device_get_softc(bridge);
pintr = pin;
if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo,
&reg, sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr),
NULL) != 0)
return (mintr);
return (PCI_INVALID_IRQ);
}
void
ofw_pci_dmamap_sync_stst_order_common(void)
{
static u_char buf[VIS_BLOCKSIZE] __aligned(VIS_BLOCKSIZE);
register_t reg, s;
s = intr_disable();
reg = rd(fprs);
wr(fprs, reg | FPRS_FEF, 0);
__asm __volatile("stda %%f0, [%0] %1"
: : "r" (buf), "n" (ASI_BLK_COMMIT_S));
membar(Sync);
wr(fprs, reg, 0);
intr_restore(s);
}
int
ofw_pci_read_ivar(device_t dev, device_t child __unused, int which,
uintptr_t *result)
{
struct ofw_pci_softc *sc;
switch (which) {
case PCIB_IVAR_DOMAIN:
*result = device_get_unit(dev);
return (0);
case PCIB_IVAR_BUS:
sc = device_get_softc(dev);
*result = sc->sc_pci_secbus;
return (0);
}
return (ENOENT);
}
struct resource *
ofw_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct ofw_pci_softc *sc;
struct resource *rv;
struct rman *rm;
sc = device_get_softc(bus);
switch (type) {
case SYS_RES_IRQ:
/*
* XXX: Don't accept blank ranges for now, only single
* interrupts. The other case should not happen with
* the MI PCI code ...
* XXX: This may return a resource that is out of the
* range that was specified. Is this correct ...?
*/
if (start != end)
panic("%s: XXX: interrupt range", __func__);
return (bus_generic_alloc_resource(bus, child, type, rid,
start, end, count, flags));
case SYS_RES_MEMORY:
rm = &sc->sc_pci_mem_rman;
break;
case SYS_RES_IOPORT:
rm = &sc->sc_pci_io_rman;
break;
default:
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child, type,
*rid, rv) != 0) {
rman_release_resource(rv);
return (NULL);
}
return (rv);
}
int
ofw_pci_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
struct ofw_pci_softc *sc;
struct bus_space_tag *tag;
sc = device_get_softc(bus);
switch (type) {
case SYS_RES_IRQ:
return (bus_generic_activate_resource(bus, child, type, rid,
r));
case SYS_RES_MEMORY:
tag = sparc64_alloc_bus_tag(r, PCI_MEMORY_BUS_SPACE);
if (tag == NULL)
return (ENOMEM);
rman_set_bustag(r, tag);
rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_MEM32] +
rman_get_start(r));
break;
case SYS_RES_IOPORT:
rman_set_bustag(r, sc->sc_pci_iot);
rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_IO] +
rman_get_start(r));
break;
}
return (rman_activate_resource(r));
}
int
ofw_pci_adjust_resource(device_t bus, device_t child, int type,
struct resource *r, rman_res_t start, rman_res_t end)
{
struct ofw_pci_softc *sc;
struct rman *rm;
sc = device_get_softc(bus);
switch (type) {
case SYS_RES_IRQ:
return (bus_generic_adjust_resource(bus, child, type, r,
start, end));
case SYS_RES_MEMORY:
rm = &sc->sc_pci_mem_rman;
break;
case SYS_RES_IOPORT:
rm = &sc->sc_pci_io_rman;
break;
default:
return (EINVAL);
}
if (rman_is_region_manager(r, rm) == 0)
return (EINVAL);
return (rman_adjust_resource(r, start, end));
}
bus_dma_tag_t
ofw_pci_get_dma_tag(device_t bus, device_t child __unused)
{
struct ofw_pci_softc *sc;
sc = device_get_softc(bus);
return (sc->sc_pci_dmat);
}
phandle_t
ofw_pci_get_node(device_t bus, device_t child __unused)
{
struct ofw_pci_softc *sc;
sc = device_get_softc(bus);
/* We only have one child, the PCI bus, which needs our own node. */
return (sc->sc_node);
}