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NetBSD/sys/arch/hpcmips/vr/vrpciu.c

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/* $NetBSD: vrpciu.c,v 1.14 2003/07/15 02:29:36 lukem Exp $ */
/*-
* Copyright (c) 2001 Enami Tsugutomo.
* 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 REGENTS 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 REGENTS 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vrpciu.c,v 1.14 2003/07/15 02:29:36 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/bus_space_hpcmips.h>
#include <machine/bus_dma_hpcmips.h>
#include <machine/config_hook.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pciidereg.h>
#include <hpcmips/vr/icureg.h>
#include <hpcmips/vr/vripif.h>
#include <hpcmips/vr/vrpciureg.h>
#include "pci.h"
#ifdef DEBUG
#define DPRINTF(args) printf args
#else
#define DPRINTF(args)
#endif
struct vrpciu_softc {
struct device sc_dev;
vrip_chipset_tag_t sc_vc;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
void *sc_ih;
struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */
struct hpcmips_pci_chipset sc_pc;
};
static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t);
static u_int32_t
vrpciu_read(struct vrpciu_softc *, int);
#ifdef DEBUG
static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t)
__attribute__((unused));
static u_int16_t
vrpciu_read_2(struct vrpciu_softc *, int);
#endif
static int vrpciu_match(struct device *, struct cfdata *, void *);
static void vrpciu_attach(struct device *, struct device *, void *);
#if NPCI > 0
static int vrpciu_print(void *, const char *);
#endif
static int vrpciu_intr(void *);
static void vrpciu_attach_hook(struct device *, struct device *,
struct pcibus_attach_args *);
static int vrpciu_bus_maxdevs(pci_chipset_tag_t, int);
static int vrpciu_bus_devorder(pci_chipset_tag_t, int, char *);
static pcitag_t vrpciu_make_tag(pci_chipset_tag_t, int, int, int);
static void vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *,
int *);
static pcireg_t vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int);
static void vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
static int vrpciu_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
static const char *vrpciu_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
static const struct evcnt *vrpciu_intr_evcnt(pci_chipset_tag_t,
pci_intr_handle_t);
static void *vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
int, int (*)(void *), void *);
static void vrpciu_intr_disestablish(pci_chipset_tag_t, void *);
CFATTACH_DECL(vrpciu, sizeof(struct vrpciu_softc),
vrpciu_match, vrpciu_attach, NULL, NULL);
static void
vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val)
{
bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val);
}
static u_int32_t
vrpciu_read(struct vrpciu_softc *sc, int offset)
{
return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset));
}
#ifdef DEBUG
static void
vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val)
{
bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val);
}
static u_int16_t
vrpciu_read_2(struct vrpciu_softc *sc, int offset)
{
return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset));
}
#endif
static int
vrpciu_match(struct device *parent, struct cfdata *match, void *aux)
{
return (1);
}
static void
vrpciu_attach(struct device *parent, struct device *self, void *aux)
{
struct vrpciu_softc *sc = (struct vrpciu_softc *)self;
pci_chipset_tag_t pc = &sc->sc_pc;
struct vrip_attach_args *va = aux;
#if defined(DEBUG) || NPCI > 0
u_int32_t reg;
#endif
#if NPCI > 0
struct bus_space_tag_hpcmips *iot;
char tmpbuf[16];
struct pcibus_attach_args pba;
#endif
sc->sc_vc = va->va_vc;
sc->sc_iot = va->va_iot;
if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0,
&sc->sc_ioh)) {
printf(": couldn't map io space\n");
return;
}
sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY,
vrpciu_intr, sc);
if (sc->sc_ih == NULL) {
printf(": couldn't establish interrupt\n");
return;
}
/* Enable level 2 interrupt */
vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1);
printf("\n");
#ifdef DEBUG
#define DUMP_MAW(sc, name, reg) do { \
printf("%s: %s =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
(name), (reg)); \
printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \
(sc)->sc_dev.dv_xname, \
reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg), \
VRPCIU_MAW_ADDR(reg), \
VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg)); \
printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
reg & VRPCIU_MAW_WINEN); \
printf("%s:\tPCIADR =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
VRPCIU_MAW_PCIADDR(reg)); \
} while (0)
#define DUMP_TAW(sc, name, reg) do { \
printf("%s: %s =\t\t0x%08x\n", (sc)->sc_dev.dv_xname, \
(name), (reg)); \
printf("%s:\tMASK =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
VRPCIU_TAW_ADDRMASK(reg)); \
printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
reg & VRPCIU_TAW_WINEN); \
printf("%s:\tIBA =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
VRPCIU_TAW_IBA(reg)); \
} while (0)
reg = vrpciu_read(sc, VRPCIU_MMAW1REG);
DUMP_MAW(sc, "MMAW1", reg);
reg = vrpciu_read(sc, VRPCIU_MMAW2REG);
DUMP_MAW(sc, "MMAW2", reg);
reg = vrpciu_read(sc, VRPCIU_TAW1REG);
DUMP_TAW(sc, "TAW1", reg);
reg = vrpciu_read(sc, VRPCIU_TAW2REG);
DUMP_TAW(sc, "TAW2", reg);
reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
DUMP_MAW(sc, "MIOAW", reg);
printf("%s: BUSERRAD =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_BUSERRADREG));
printf("%s: INTCNTSTA =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_INTCNTSTAREG));
printf("%s: EXACC =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_EXACCREG));
printf("%s: RECONT =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_RECONTREG));
printf("%s: PCIEN =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_ENREG));
printf("%s: CLOCKSEL =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CLKSELREG));
printf("%s: TRDYV =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_TRDYVREG));
printf("%s: CLKRUN =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read_2(sc, VRPCIU_CLKRUNREG));
printf("%s: IDREG =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG));
reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG);
printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, reg);
vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg);
printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG));
printf("%s: CLASS =\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG));
printf("%s: BHLC =\t\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG));
printf("%s: MAIL =\t\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG));
printf("%s: MBA1 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG));
printf("%s: MBA2 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG));
printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
#if 0
vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG,
vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01);
printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
#endif
#endif
pc->pc_dev = &sc->sc_dev;
pc->pc_attach_hook = vrpciu_attach_hook;
pc->pc_bus_maxdevs = vrpciu_bus_maxdevs;
pc->pc_bus_devorder = vrpciu_bus_devorder;
pc->pc_make_tag = vrpciu_make_tag;
pc->pc_decompose_tag = vrpciu_decompose_tag;
pc->pc_conf_read = vrpciu_conf_read;
pc->pc_conf_write = vrpciu_conf_write;
pc->pc_intr_map = vrpciu_intr_map;
pc->pc_intr_string = vrpciu_intr_string;
pc->pc_intr_evcnt = vrpciu_intr_evcnt;
pc->pc_intr_establish = vrpciu_intr_establish;
pc->pc_intr_disestablish = vrpciu_intr_disestablish;
#if 0
{
int i;
for (i = 0; i < 8; i++)
printf("%s: ID_REG(0, 0, %d) = 0x%08x\n",
sc->sc_dev.dv_xname, i,
pci_conf_read(pc, pci_make_tag(pc, 0, 0, i),
PCI_ID_REG));
}
#endif
#if NPCI > 0
memset(&pba, 0, sizeof(pba));
pba.pba_busname = "pci";
/* For now, just inherit window mappings set by WinCE. XXX. */
iot = hpcmips_alloc_bus_space_tag();
reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot",
sc->sc_dev.dv_xname);
hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot,
tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg));
pba.pba_iot = &iot->bst;
/*
* Just use system bus space tag. It works since WinCE maps
* PCI bus space at same offset. But this isn't right thing
* of course. XXX.
*/
pba.pba_memt = sc->sc_iot;
pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt;
pba.pba_dmat64 = NULL;
pba.pba_bus = 0;
pba.pba_bridgetag = NULL;
if (platid_match(&platid, &platid_mask_MACH_LASER5_L_BOARD)) {
/*
* fix PCI device configration for L-Router.
*/
/* change IDE controller to native mode */
reg = pci_conf_read(pc, pci_make_tag(pc, 0, 16, 0),
PCI_CLASS_REG);
reg |= PCIIDE_INTERFACE_PCI(0) << PCI_INTERFACE_SHIFT;
reg |= PCIIDE_INTERFACE_PCI(1) << PCI_INTERFACE_SHIFT;
pci_conf_write(pc, pci_make_tag(pc, 0, 16, 0), PCI_CLASS_REG,
reg);
/* fix broken BAR setting of fxp0, fxp1 */
pci_conf_write(pc, pci_make_tag(pc, 0, 0, 0), PCI_MAPREG_START,
0x11100000);
pci_conf_write(pc, pci_make_tag(pc, 0, 1, 0), PCI_MAPREG_START,
0x11200000);
}
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_MRL_OKAY;
pba.pba_pc = pc;
config_found(self, &pba, vrpciu_print);
#endif
}
#if NPCI > 0
static int
vrpciu_print(void *aux, const char *pnp)
{
struct pcibus_attach_args *pba = aux;
if (pnp != NULL)
aprint_normal("%s at %s", pba->pba_busname, pnp);
else
aprint_normal(" bus %d", pba->pba_bus);
return (UNCONF);
}
#endif
/*
* Handle PCI error interrupts.
*/
int
vrpciu_intr(void *arg)
{
struct vrpciu_softc *sc = (struct vrpciu_softc *)arg;
u_int32_t isr, baddr;
isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG);
baddr = vrpciu_read(sc, VRPCIU_BUSERRADREG);
printf("%s: status=0x%08x bad addr=0x%08x\n",
sc->sc_dev.dv_xname, isr, baddr);
return ((isr & 0x0f) ? 1 : 0);
}
void
vrpciu_attach_hook(struct device *parent, struct device *self,
struct pcibus_attach_args *pba)
{
return;
}
int
vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno)
{
return (32);
}
int
vrpciu_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs)
{
int i, dev;
char priorities[32];
static pcireg_t ids[] = {
/* these devices should be attached first */
PCI_ID_CODE(PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VRC4173_BCU),
};
/* scan PCI devices and check the id table */
memset(priorities, 0, sizeof(priorities));
for (dev = 0; dev < 32; dev++) {
pcireg_t id;
id = pci_conf_read(pc, pci_make_tag(pc, 0, dev, 0),PCI_ID_REG);
for (i = 0; i < sizeof(ids)/sizeof(*ids); i++)
if (id == ids[i])
priorities[dev] = 1;
}
/* fill order array */
for (i = 1; 0 <= i; i--)
for (dev = 0; dev < 32; dev++)
if (priorities[dev] == i)
*devs++ = dev;
return (32);
}
pcitag_t
vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
{
return ((bus << 16) | (device << 11) | (function << 8));
}
void
vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp,
int *fp)
{
if (bp != NULL)
*bp = (tag >> 16) & 0xff;
if (dp != NULL)
*dp = (tag >> 11) & 0x1f;
if (fp != NULL)
*fp = (tag >> 8) & 0x07;
}
pcireg_t
vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
{
struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
u_int32_t val;
int bus, device, function;
pci_decompose_tag(pc, tag, &bus, &device, &function);
if (bus == 0) {
if (device > 21)
return ((pcitag_t)-1);
tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
} else
tag |= VRPCIU_CONF_TYPE1;
vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
val = vrpciu_read(sc, VRPCIU_CONFDREG);
#if 0
printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val);
#endif
return (val);
}
void
vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg,
pcireg_t data)
{
struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
int bus, device, function;
#if 0
printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data);
#endif
vrpciu_decompose_tag(pc, tag, &bus, &device, &function);
if (bus == 0) {
if (device > 21)
return;
tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
} else
tag |= VRPCIU_CONF_TYPE1;
vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
vrpciu_write(sc, VRPCIU_CONFDREG, data);
}
int
vrpciu_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
pci_chipset_tag_t pc = pa->pa_pc;
pcitag_t intrtag = pa->pa_intrtag;
int bus, dev, func;
#ifdef DEBUG
int line = pa->pa_intrline;
int pin = pa->pa_intrpin;
#endif
pci_decompose_tag(pc, intrtag, &bus, &dev, &func);
DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname,
bus, dev, func, line, pin));
*ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func);
return (0);
}
const char *
vrpciu_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih)
{
static char irqstr[sizeof("pciintr") + 16];
snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d",
CONFIG_HOOK_PCIINTR_BUS((int)ih),
CONFIG_HOOK_PCIINTR_DEVICE((int)ih),
CONFIG_HOOK_PCIINTR_FUNCTION((int)ih));
return (irqstr);
}
const struct evcnt *
vrpciu_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih)
{
/* XXX for now, no evcnt parent reported */
return (NULL);
}
void *
vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level,
int (*func)(void *), void *arg)
{
if (ih == -1)
return (NULL);
DPRINTF(("vrpciu_intr_establish: %lx\n", ih));
return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE,
(int (*)(void *, int, long, void *))func, arg));
}
void
vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie)
{
DPRINTF(("vrpciu_intr_disestablish: %p\n", cookie));
config_unhook(cookie);
}
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