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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/xfs/@/arm/xscale/i80321/i80321_pci.c |
/* $NetBSD: i80321_pci.c,v 1.4 2003/07/15 00:24:54 lukem Exp $ */
/*-
* Copyright (c) 2001, 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* PCI configuration support for i80321 I/O Processor chip.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/arm/xscale/i80321/i80321_pci.c 229093 2011-12-31 14:12:12Z hselasky $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/pcb.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <machine/pmap.h>
#include <arm/xscale/i80321/i80321reg.h>
#include <arm/xscale/i80321/i80321var.h>
#include <arm/xscale/i80321/i80321_intr.h>
#include <dev/pci/pcib_private.h>
#include "pcib_if.h"
#include <dev/pci/pcireg.h>
extern struct i80321_softc *i80321_softc;
static int
i80321_pci_probe(device_t dev)
{
device_set_desc(dev, "i80321 PCI bus");
return (0);
}
static int
i80321_pci_attach(device_t dev)
{
uint32_t busno;
struct i80321_pci_softc *sc = device_get_softc(dev);
sc->sc_st = i80321_softc->sc_st;
sc->sc_atu_sh = i80321_softc->sc_atu_sh;
busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
busno = PCIXSR_BUSNO(busno);
if (busno == 0xff)
busno = 0;
sc->sc_dev = dev;
sc->sc_busno = busno;
sc->sc_pciio = &i80321_softc->sc_pci_iot;
sc->sc_pcimem = &i80321_softc->sc_pci_memt;
sc->sc_mem = i80321_softc->sc_owin[0].owin_xlate_lo +
VERDE_OUT_XLATE_MEM_WIN_SIZE;
sc->sc_io = i80321_softc->sc_iow_vaddr;
/* Initialize memory and i/o rmans. */
sc->sc_io_rman.rm_type = RMAN_ARRAY;
sc->sc_io_rman.rm_descr = "I80321 PCI I/O Ports";
if (rman_init(&sc->sc_io_rman) != 0 ||
rman_manage_region(&sc->sc_io_rman,
sc->sc_io,
sc->sc_io +
VERDE_OUT_XLATE_IO_WIN_SIZE) != 0) {
panic("i80321_pci_probe: failed to set up I/O rman");
}
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "I80321 PCI Memory";
if (rman_init(&sc->sc_mem_rman) != 0 ||
rman_manage_region(&sc->sc_mem_rman,
0, VERDE_OUT_XLATE_MEM_WIN_SIZE) != 0) {
panic("i80321_pci_probe: failed to set up memory rman");
}
sc->sc_irq_rman.rm_type = RMAN_ARRAY;
sc->sc_irq_rman.rm_descr = "i80321 PCI IRQs";
if (rman_init(&sc->sc_irq_rman) != 0 ||
rman_manage_region(&sc->sc_irq_rman, 26, 32) != 0)
panic("i80321_pci_probe: failed to set up IRQ rman");
device_add_child(dev, "pci",busno);
return (bus_generic_attach(dev));
}
static int
i80321_pci_maxslots(device_t dev)
{
return (PCI_SLOTMAX);
}
static int
i80321_pci_conf_setup(struct i80321_pci_softc *sc, int bus, int slot, int func,
int reg, uint32_t *addr)
{
uint32_t busno;
busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
busno = PCIXSR_BUSNO(busno);
if (busno == 0xff)
busno = 0;
/*
* If the bus # is the same as our own, then use Type 0 cycles,
* else use Type 1.
*
* XXX We should filter out all non-private devices here!
* XXX How does private space interact with PCI-PCI bridges?
*/
if (bus == busno) {
if (slot > (31 - 16))
return (1);
/*
* NOTE: PCI-X requires that that devices updated their
* PCIXSR on every config write with the device number
* specified in AD[15:11]. If we don't set this field,
* each device could end of thinking it is at device 0,
* which can cause a number of problems. Doing this
* unconditionally should be OK when only PCI devices
* are present.
*/
bus &= 0xff;
slot &= 0x1f;
func &= 0x07;
*addr = (1U << (slot + 16)) |
(slot << 11) | (func << 8) | reg;
} else {
*addr = (bus << 16) | (slot << 11) | (func << 8) | reg | 1;
}
return (0);
}
static u_int32_t
i80321_pci_read_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, int bytes)
{
struct i80321_pci_softc *sc = device_get_softc(dev);
uint32_t isr;
uint32_t addr;
u_int32_t ret = 0;
vm_offset_t va;
int err = 0;
if (i80321_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr))
return (-1);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCAR,
addr);
va = sc->sc_atu_sh;
switch (bytes) {
case 1:
err = badaddr_read((void*)(va + ATU_OCCDR + (reg & 3)), 1, &ret);
break;
case 2:
err = badaddr_read((void*)(va + ATU_OCCDR + (reg & 3)), 2, &ret);
break;
case 4:
err = badaddr_read((void *)(va + ATU_OCCDR), 4, &ret);
break;
default:
printf("i80321_read_config: invalid size %d\n", bytes);
ret = -1;
}
if (err) {
isr = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUISR);
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_ATUISR,
isr & (ATUISR_P_SERR_DET|ATUISR_PMA|ATUISR_PTAM|
ATUISR_PTAT|ATUISR_PMPE));
return (-1);
}
return (ret);
}
static void
i80321_pci_write_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, u_int32_t data, int bytes)
{
struct i80321_pci_softc *sc = device_get_softc(dev);
uint32_t addr;
if (i80321_pci_conf_setup(sc, bus, slot, func, reg & ~3, &addr))
return;
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCAR,
addr);
switch (bytes) {
case 1:
bus_space_write_1(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR +
(reg & 3), data);
break;
case 2:
bus_space_write_2(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR +
(reg & 3), data);
break;
case 4:
bus_space_write_4(sc->sc_st, sc->sc_atu_sh, ATU_OCCDR, data);
break;
default:
printf("i80321_pci_write_config: Invalid size : %d\n", bytes);
}
}
static int
i80321_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct i80321_pci_softc *sc = device_get_softc(dev);
switch (which) {
case PCIB_IVAR_DOMAIN:
*result = 0;
return (0);
case PCIB_IVAR_BUS:
*result = sc->sc_busno;
return (0);
}
return (ENOENT);
}
static int
i80321_write_ivar(device_t dev, device_t child, int which, uintptr_t result)
{
struct i80321_pci_softc * sc = device_get_softc(dev);
switch (which) {
case PCIB_IVAR_DOMAIN:
return (EINVAL);
case PCIB_IVAR_BUS:
sc->sc_busno = result;
return (0);
}
return (ENOENT);
}
static struct resource *
i80321_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct i80321_pci_softc *sc = device_get_softc(bus);
struct resource *rv;
struct rman *rm;
bus_space_tag_t bt = NULL;
bus_space_handle_t bh = 0;
switch (type) {
case SYS_RES_IRQ:
rm = &sc->sc_irq_rman;
break;
case SYS_RES_MEMORY:
rm = &sc->sc_mem_rman;
bt = sc->sc_pcimem;
bh = (start >= 0x80000000 && start < 0x84000000) ? 0x80000000 :
sc->sc_mem;
start &= (0x1000000 - 1);
end &= (0x1000000 - 1);
break;
case SYS_RES_IOPORT:
rm = &sc->sc_io_rman;
bt = sc->sc_pciio;
bh = sc->sc_io;
if (start < sc->sc_io) {
start = start - 0x90000000 + sc->sc_io;
end = end - 0x90000000 + sc->sc_io;
}
break;
default:
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
if (type != SYS_RES_IRQ) {
if (type == SYS_RES_MEMORY)
bh += (rman_get_start(rv));
rman_set_bustag(rv, bt);
rman_set_bushandle(rv, bh);
if (flags & RF_ACTIVE) {
if (bus_activate_resource(child, type, *rid, rv)) {
rman_release_resource(rv);
return (NULL);
}
}
}
return (rv);
}
static int
i80321_pci_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
u_long p;
int error;
if (type == SYS_RES_MEMORY) {
error = bus_space_map(rman_get_bustag(r),
rman_get_bushandle(r), rman_get_size(r), 0, &p);
if (error)
return (error);
rman_set_bushandle(r, p);
}
return (rman_activate_resource(r));
}
static int
i80321_pci_setup_intr(device_t dev, device_t child,
struct resource *ires, int flags, driver_filter_t *filt,
driver_intr_t *intr, void *arg, void **cookiep)
{
return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
filt, intr, arg, cookiep));
}
static int
i80321_pci_teardown_intr(device_t dev, device_t child, struct resource *res,
void *cookie)
{
return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
}
static device_method_t i80321_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, i80321_pci_probe),
DEVMETHOD(device_attach, i80321_pci_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_read_ivar, i80321_read_ivar),
DEVMETHOD(bus_write_ivar, i80321_write_ivar),
DEVMETHOD(bus_alloc_resource, i80321_pci_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, i80321_pci_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, i80321_pci_setup_intr),
DEVMETHOD(bus_teardown_intr, i80321_pci_teardown_intr),
/* pcib interface */
DEVMETHOD(pcib_maxslots, i80321_pci_maxslots),
DEVMETHOD(pcib_read_config, i80321_pci_read_config),
DEVMETHOD(pcib_write_config, i80321_pci_write_config),
DEVMETHOD(pcib_route_interrupt, machdep_pci_route_interrupt),
DEVMETHOD_END
};
static driver_t i80321_pci_driver = {
"pcib",
i80321_pci_methods,
sizeof(struct i80321_pci_softc),
};
static devclass_t i80321_pci_devclass;
DRIVER_MODULE(ipci, iq, i80321_pci_driver, i80321_pci_devclass, 0, 0);