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/* $NetBSD: ixp425.c,v 1.10 2005/12/11 12:16:51 christos Exp $ */
/*
* Copyright (c) 2003
* Ichiro FUKUHARA <ichiro@ichiro.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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Ichiro FUKUHARA.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``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 ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD 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/cdefs.h>
__FBSDID("$FreeBSD$");
#define _ARM32_BUS_DMA_PRIVATE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <arm/xscale/ixp425/ixp425reg.h>
#include <arm/xscale/ixp425/ixp425var.h>
#include <arm/xscale/ixp425/ixp425_intr.h>
#include <dev/pci/pcireg.h>
volatile uint32_t intr_enabled;
uint32_t intr_steer = 0;
struct ixp425_softc *ixp425_softc = NULL;
static int ixp425_probe(device_t);
static void ixp425_identify(driver_t *, device_t);
static int ixp425_attach(device_t);
static struct {
uint32_t hwbase;
uint32_t size;
uint32_t vbase;
} hwvtrans[] = {
{ IXP425_IO_HWBASE, IXP425_IO_SIZE, IXP425_IO_VBASE },
{ IXP425_EXP_HWBASE, IXP425_EXP_SIZE, IXP425_EXP_VBASE },
{ IXP425_PCI_HWBASE, IXP425_PCI_SIZE, IXP425_PCI_VBASE },
{ IXP425_PCI_MEM_HWBASE,IXP425_PCI_MEM_SIZE, IXP425_PCI_MEM_VBASE },
#if 0
{ IXP425_PCI_IO_HWBASE, IXP425_PCI_IO_SIZE, IXP425_PCI_IO_VBASE },
#endif
{ IXP425_MCU_HWBASE, IXP425_MCU_SIZE, IXP425_MCU_VBASE },
{ IXP425_QMGR_HWBASE, IXP425_QMGR_SIZE, IXP425_QMGR_VBASE },
{ IXP425_NPE_A_HWBASE, IXP425_NPE_A_SIZE, IXP425_NPE_A_VBASE },
{ IXP425_NPE_B_HWBASE, IXP425_NPE_B_SIZE, IXP425_NPE_B_VBASE },
{ IXP425_NPE_C_HWBASE, IXP425_NPE_C_SIZE, IXP425_NPE_C_VBASE },
{ IXP425_MAC_A_HWBASE, IXP425_MAC_A_SIZE, IXP425_MAC_A_VBASE },
{ IXP425_MAC_B_HWBASE, IXP425_MAC_B_SIZE, IXP425_MAC_B_VBASE },
/* Gateworks Avila IDE/CF is mapped here */
{ IXP425_EXP_BUS_CS1_HWBASE, IXP425_EXP_BUS_SIZE,
IXP425_EXP_BUS_CS1_VBASE },
{ IXP425_EXP_BUS_CS2_HWBASE, IXP425_EXP_BUS_SIZE,
IXP425_EXP_BUS_CS2_VBASE },
/* ADI Pronghorn Metro IDE/CF is mapped here */
{ IXP425_EXP_BUS_CS3_HWBASE, IXP425_EXP_BUS_SIZE,
IXP425_EXP_BUS_CS3_VBASE },
{ IXP425_EXP_BUS_CS4_HWBASE, IXP425_EXP_BUS_SIZE,
IXP425_EXP_BUS_CS4_VBASE },
};
int
getvbase(uint32_t hwbase, uint32_t size, uint32_t *vbase)
{
int i;
for (i = 0; i < sizeof hwvtrans / sizeof *hwvtrans; i++) {
if (hwbase >= hwvtrans[i].hwbase &&
hwbase + size <= hwvtrans[i].hwbase + hwvtrans[i].size) {
*vbase = hwbase - hwvtrans[i].hwbase + hwvtrans[i].vbase;
return (0);
}
}
return (ENOENT);
}
struct arm32_dma_range *
bus_dma_get_range(void)
{
return (NULL);
}
int
bus_dma_get_range_nb(void)
{
return (0);
}
static __inline u_int32_t
ixp425_irq2gpio_bit(int irq)
{
static const uint8_t int2gpio[32] __attribute__ ((aligned(32))) = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#0 -> INT#5 */
0x00, 0x01, /* GPIO#0 -> GPIO#1 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#8 -> INT#13 */
0xff, 0xff, 0xff, 0xff, 0xff, /* INT#14 -> INT#18 */
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* GPIO#2 -> GPIO#7 */
0x08, 0x09, 0x0a, 0x0b, 0x0c, /* GPIO#8 -> GPIO#12 */
0xff, 0xff /* INT#30 -> INT#31 */
};
return (1U << int2gpio[irq]);
}
void
arm_mask_irq(uintptr_t nb)
{
intr_enabled &= ~(1 << nb);
ixp425_set_intrmask();
/*XXX; If it's a GPIO interrupt, ACK it know. Can it be a problem ?*/
if ((1 << nb) & IXP425_INT_GPIOMASK)
IXPREG(IXP425_GPIO_VBASE + IXP425_GPIO_GPISR) =
ixp425_irq2gpio_bit(nb);
}
void
arm_unmask_irq(uintptr_t nb)
{
intr_enabled |= (1 << nb);
ixp425_set_intrmask();
}
static __inline uint32_t
ixp425_irq_read(void)
{
return IXPREG(IXP425_INT_STATUS) & intr_enabled;
}
int
arm_get_next_irq(void)
{
int irq;
if ((irq = ixp425_irq_read()))
return (ffs(irq) - 1);
return (-1);
}
void
cpu_reset(void)
{
bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
IXP425_OST_WDOG_KEY, OST_WDOG_KEY_MAJICK);
bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
IXP425_OST_WDOG, 0);
bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE,
IXP425_OST_WDOG_ENAB, OST_WDOG_ENAB_RST_ENA |
OST_WDOG_ENAB_CNT_ENA);
printf("Reset failed!\n");
for(;;);
}
static void
ixp425_identify(driver_t *driver, device_t parent)
{
BUS_ADD_CHILD(parent, 0, "ixp", 0);
}
static int
ixp425_probe(device_t dev)
{
device_set_desc(dev, "Intel IXP425");
return (0);
}
static int
ixp425_attach(device_t dev)
{
struct ixp425_softc *sc;
sc = device_get_softc(dev);
sc->sc_iot = &ixp425_bs_tag;
KASSERT(ixp425_softc == NULL, ("ixp425_attach called twice?"));
ixp425_softc = sc;
intr_enabled = 0;
ixp425_set_intrmask();
ixp425_set_intrsteer();
if (bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
BUS_SPACE_MAXADDR, NULL, NULL, 0xffffffff, 0xff, 0xffffffff, 0,
NULL, NULL, &sc->sc_dmat))
panic("couldn't create the IXP425 dma tag !");
sc->sc_irq_rman.rm_type = RMAN_ARRAY;
sc->sc_irq_rman.rm_descr = "IXP425 IRQs";
if (rman_init(&sc->sc_irq_rman) != 0 ||
rman_manage_region(&sc->sc_irq_rman, 0, 31) != 0)
panic("ixp425_attach: failed to set up IRQ rman");
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "IXP425 Memory";
if (rman_init(&sc->sc_mem_rman) != 0 ||
rman_manage_region(&sc->sc_mem_rman, 0, ~0) != 0)
panic("ixp425_attach: failed to set up memory rman");
BUS_ADD_CHILD(dev, 0, "pcib", 0);
BUS_ADD_CHILD(dev, 0, "ixpclk", 0);
BUS_ADD_CHILD(dev, 0, "ixpiic", 0);
/* XXX move to hints? */
BUS_ADD_CHILD(dev, 0, "ixpwdog", 0);
/* attach wired devices via hints */
bus_enumerate_hinted_children(dev);
if (bus_space_map(sc->sc_iot, IXP425_GPIO_HWBASE, IXP425_GPIO_SIZE,
0, &sc->sc_gpio_ioh))
panic("ixp425_attach: unable to map GPIO registers");
if (bus_space_map(sc->sc_iot, IXP425_EXP_HWBASE, IXP425_EXP_SIZE,
0, &sc->sc_exp_ioh))
panic("ixp425_attach: unable to map Expansion Bus registers");
bus_generic_probe(dev);
bus_generic_attach(dev);
return (0);
}
static void
ixp425_hinted_child(device_t bus, const char *dname, int dunit)
{
device_t child;
struct ixp425_ivar *ivar;
child = BUS_ADD_CHILD(bus, 0, dname, dunit);
ivar = IXP425_IVAR(child);
resource_int_value(dname, dunit, "addr", &ivar->addr);
resource_int_value(dname, dunit, "irq", &ivar->irq);
}
static device_t
ixp425_add_child(device_t dev, int order, const char *name, int unit)
{
device_t child;
struct ixp425_ivar *ivar;
child = device_add_child_ordered(dev, order, name, unit);
if (child == NULL)
return NULL;
ivar = malloc(sizeof(struct ixp425_ivar), M_DEVBUF, M_NOWAIT);
if (ivar == NULL) {
device_delete_child(dev, child);
return NULL;
}
ivar->addr = 0;
ivar->irq = -1;
device_set_ivars(child, ivar);
return child;
}
static int
ixp425_read_ivar(device_t bus, device_t child, int which, u_char *result)
{
struct ixp425_ivar *ivar = IXP425_IVAR(child);
switch (which) {
case IXP425_IVAR_ADDR:
if (ivar->addr != 0) {
*(uint32_t *)result = ivar->addr;
return 0;
}
break;
case IXP425_IVAR_IRQ:
if (ivar->irq != -1) {
*(int *)result = ivar->irq;
return 0;
}
break;
}
return EINVAL;
}
static struct resource *
ixp425_alloc_resource(device_t dev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct ixp425_softc *sc = device_get_softc(dev);
struct rman *rmanp;
struct resource *rv;
uint32_t vbase, addr;
int irq;
switch (type) {
case SYS_RES_IRQ:
rmanp = &sc->sc_irq_rman;
/* override per hints */
if (BUS_READ_IVAR(dev, child, IXP425_IVAR_IRQ, &irq) == 0)
start = end = irq;
rv = rman_reserve_resource(rmanp, start, end, count,
flags, child);
if (rv != NULL)
rman_set_rid(rv, *rid);
break;
case SYS_RES_MEMORY:
rmanp = &sc->sc_mem_rman;
/* override per hints */
if (BUS_READ_IVAR(dev, child, IXP425_IVAR_ADDR, &addr) == 0) {
start = addr;
end = start + 0x1000; /* XXX */
}
if (getvbase(start, end - start, &vbase))
return NULL;
rv = rman_reserve_resource(rmanp, start, end, count,
flags, child);
if (rv != NULL) {
rman_set_rid(rv, *rid);
if (strcmp(device_get_name(child), "uart") == 0)
rman_set_bustag(rv, &ixp425_a4x_bs_tag);
else
rman_set_bustag(rv, sc->sc_iot);
rman_set_bushandle(rv, vbase);
}
break;
default:
rv = NULL;
break;
}
return rv;
}
static int
ixp425_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)
{
uint32_t mask;
int i;
BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt, intr,
arg, cookiep);
mask = 0;
for (i = rman_get_start(ires); i <= rman_get_end(ires); i++)
mask |= 1 << i;
intr_enabled |= mask;
ixp425_set_intrmask();
return (0);
}
static int
ixp425_teardown_intr(device_t dev, device_t child, struct resource *res,
void *cookie)
{
uint32_t mask;
int i;
mask = 0;
for (i = rman_get_start(res); i <= rman_get_end(res); i++)
mask |= 1 << i;
intr_enabled &= ~mask;
ixp425_set_intrmask();
return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
}
static device_method_t ixp425_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ixp425_probe),
DEVMETHOD(device_attach, ixp425_attach),
DEVMETHOD(device_identify, ixp425_identify),
/* Bus interface */
DEVMETHOD(bus_add_child, ixp425_add_child),
DEVMETHOD(bus_hinted_child, ixp425_hinted_child),
DEVMETHOD(bus_read_ivar, ixp425_read_ivar),
DEVMETHOD(bus_alloc_resource, ixp425_alloc_resource),
DEVMETHOD(bus_setup_intr, ixp425_setup_intr),
DEVMETHOD(bus_teardown_intr, ixp425_teardown_intr),
{0, 0},
};
static driver_t ixp425_driver = {
"ixp",
ixp425_methods,
sizeof(struct ixp425_softc),
};
static devclass_t ixp425_devclass;
DRIVER_MODULE(ixp, nexus, ixp425_driver, ixp425_devclass, 0, 0);
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