NetBSD-5.0.2/sys/arch/hpcmips/dev/plumicu.c
/* $NetBSD: plumicu.c,v 1.11 2008/04/28 20:23:21 martin Exp $ */
/*-
* Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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: plumicu.c,v 1.11 2008/04/28 20:23:21 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <hpcmips/tx/tx39var.h>
#include <hpcmips/dev/plumvar.h>
#include <hpcmips/dev/plumicuvar.h>
#include <hpcmips/dev/plumicureg.h>
#ifdef PLUMICUDEBUG
#define DPRINTF(arg) printf arg
#else
#define DPRINTF(arg)
#endif
int plumicu_match(struct device *, struct cfdata *, void *);
void plumicu_attach(struct device *, struct device *, void *);
int plumicu_intr(void *);
static inline void plum_di(plum_chipset_tag_t);
static inline void plum_ei(plum_chipset_tag_t);
const struct plum_intr_ctrl {
plumreg_t ic_ackpat1;
plumreg_t ic_ackpat2; int ic_ackreg2;
plumreg_t ic_ienpat; int ic_ienreg;
plumreg_t ic_senpat; int ic_senreg;
} pi_ctrl[PLUM_INTR_MAX] = {
[PLUM_INT_C1IO] = {PLUM_INT_INTSTA_PCCINT,
PLUM_INT_PCCINTS_C1IO, PLUM_INT_PCCINTS_REG,
PLUM_INT_PCCIEN_IENC1IO, PLUM_INT_PCCIEN_REG,
PLUM_INT_PCCIEN_SENC1IO, PLUM_INT_PCCIEN_REG
},
[PLUM_INT_C1RI] = {PLUM_INT_INTSTA_PCCINT,
PLUM_INT_PCCINTS_C1RI, PLUM_INT_PCCINTS_REG,
PLUM_INT_PCCIEN_IENC1RI, PLUM_INT_PCCIEN_REG,
PLUM_INT_PCCIEN_SENC1RI, PLUM_INT_PCCIEN_REG
},
[PLUM_INT_C1SC] = {PLUM_INT_INTSTA_C1SCINT, 0, 0, 0, 0, 0, 0},
[PLUM_INT_C2IO] = {PLUM_INT_INTSTA_PCCINT,
PLUM_INT_PCCINTS_C2IO, PLUM_INT_PCCINTS_REG,
PLUM_INT_PCCIEN_IENC2IO, PLUM_INT_PCCIEN_REG,
PLUM_INT_PCCIEN_SENC2IO, PLUM_INT_PCCIEN_REG
},
[PLUM_INT_C2RI] = {PLUM_INT_INTSTA_PCCINT,
PLUM_INT_PCCINTS_C2RI, PLUM_INT_PCCINTS_REG,
PLUM_INT_PCCIEN_IENC2RI, PLUM_INT_PCCIEN_REG,
PLUM_INT_PCCIEN_SENC2RI, PLUM_INT_PCCIEN_REG
},
[PLUM_INT_C2SC] = {PLUM_INT_INTSTA_C2SCINT, 0, 0, 0, 0, 0, 0},
[PLUM_INT_DISP] = {PLUM_INT_INTSTA_DISPINT, 0, 0, 0, 0, 0, 0},
[PLUM_INT_USB] = {PLUM_INT_INTSTA_USBINT,
0, 0,
PLUM_INT_USBINTEN_IEN, PLUM_INT_USBINTEN_REG,
0, 0
},
[PLUM_INT_USBWAKE] = {PLUM_INT_INTSTA_USBWAKE,
0, 0,
PLUM_INT_USBINTEN_WIEN, PLUM_INT_USBINTEN_REG,
0, 0
},
[PLUM_INT_SM] = {PLUM_INT_INTSTA_SMINT,
0, 0,
PLUM_INT_SMIEN, PLUM_INT_SMIEN_REG,
0, 0
},
[PLUM_INT_EXT5IO0] = {PLUM_INT_INTSTA_EXTINT,
PLUM_INT_EXTINTS_IO5INT0, PLUM_INT_EXTINTS_REG,
PLUM_INT_EXTIEN_IENIO5INT0, PLUM_INT_EXTIEN_REG,
PLUM_INT_EXTIEN_SENIO5INT0, PLUM_INT_EXTIEN_REG,
},
[PLUM_INT_EXT5IO1] = {PLUM_INT_INTSTA_EXTINT,
PLUM_INT_EXTINTS_IO5INT1, PLUM_INT_EXTINTS_REG,
PLUM_INT_EXTIEN_IENIO5INT1, PLUM_INT_EXTIEN_REG,
PLUM_INT_EXTIEN_SENIO5INT1, PLUM_INT_EXTIEN_REG,
},
[PLUM_INT_EXT5IO2] = {PLUM_INT_INTSTA_EXTINT,
PLUM_INT_EXTINTS_IO5INT2, PLUM_INT_EXTINTS_REG,
PLUM_INT_EXTIEN_IENIO5INT2, PLUM_INT_EXTIEN_REG,
PLUM_INT_EXTIEN_SENIO5INT2, PLUM_INT_EXTIEN_REG,
},
[PLUM_INT_EXT5IO3] = {PLUM_INT_INTSTA_EXTINT,
PLUM_INT_EXTINTS_IO5INT3, PLUM_INT_EXTINTS_REG,
PLUM_INT_EXTIEN_IENIO5INT0, PLUM_INT_EXTIEN_REG,
PLUM_INT_EXTIEN_SENIO5INT0, PLUM_INT_EXTIEN_REG,
},
[PLUM_INT_EXT3IO0] = {PLUM_INT_INTSTA_EXTINT,
PLUM_INT_EXTINTS_IO3INT0, PLUM_INT_EXTINTS_REG,
PLUM_INT_EXTIEN_IENIO3INT0, PLUM_INT_EXTIEN_REG,
PLUM_INT_EXTIEN_SENIO3INT0, PLUM_INT_EXTIEN_REG,
},
[PLUM_INT_EXT3IO1] = {PLUM_INT_INTSTA_EXTINT,
PLUM_INT_EXTINTS_IO3INT1, PLUM_INT_EXTINTS_REG,
PLUM_INT_EXTIEN_IENIO3INT1, PLUM_INT_EXTIEN_REG,
PLUM_INT_EXTIEN_SENIO3INT1, PLUM_INT_EXTIEN_REG,
}
};
struct plum_intr_entry {
int pi_enabled;
int pi_line;
int (*pi_fun)(void *);
void *pi_arg;
const struct plum_intr_ctrl *pi_ctrl;
};
struct plumicu_softc {
struct device sc_dev;
plum_chipset_tag_t sc_pc;
bus_space_tag_t sc_regt;
bus_space_handle_t sc_regh;
void *sc_ih;
int sc_enable_count;
struct plum_intr_entry sc_intr[PLUM_INTR_MAX];
};
CFATTACH_DECL(plumicu, sizeof(struct plumicu_softc),
plumicu_match, plumicu_attach, NULL, NULL);
#ifdef PLUMICUDEBUG
void plumicu_dump(struct plumicu_softc *);
#endif
int
plumicu_match(struct device *parent, struct cfdata *cf, void *aux)
{
return (2); /* 1st attach group */
}
void
plumicu_attach(struct device *parent, struct device *self, void *aux)
{
struct plum_attach_args *pa = aux;
struct plumicu_softc *sc = (void*)self;
const struct plum_intr_ctrl *pic;
bus_space_tag_t regt;
bus_space_handle_t regh;
plumreg_t reg;
int i;
sc->sc_pc = pa->pa_pc;
sc->sc_regt = pa->pa_regt;
/* map plum2 interrupt controller register space */
if (bus_space_map(sc->sc_regt, PLUM_INT_REGBASE,
PLUM_INT_REGSIZE, 0, &sc->sc_regh)) {
printf(":interrupt register map failed\n");
return;
}
#ifdef PLUMICUDEBUG
plumicu_dump(sc);
#endif
/* disable all interrupt */
regt = sc->sc_regt;
regh = sc->sc_regh;
for (i = 0; i < PLUM_INTR_MAX; i++) {
pic = &pi_ctrl[i];
if (pic->ic_ienreg) {
reg = plum_conf_read(regt, regh, pic->ic_ienreg);
reg &= ~pic->ic_ienpat;
plum_conf_write(regt, regh, pic->ic_ienreg, reg);
}
if (pic->ic_senreg) {
reg = plum_conf_read(regt, regh, pic->ic_senreg);
reg &= ~pic->ic_senpat;
plum_conf_write(regt, regh, pic->ic_senreg, reg);
}
}
/* register handle to plum_chipset_tag */
plum_conf_register_intr(sc->sc_pc, (void*)sc);
/* disable interrupt redirect to TX39 core */
plum_di(sc->sc_pc);
if (!(sc->sc_ih = tx_intr_establish(sc->sc_pc->pc_tc, pa->pa_irq,
IST_EDGE, IPL_BIO,
plumicu_intr, sc))) {
printf(": can't establish interrupt\n");
}
printf("\n");
}
inline void
plum_di(plum_chipset_tag_t pc)
{
struct plumicu_softc *sc = pc->pc_intrt;
plum_conf_write(sc->sc_regt, sc->sc_regh, PLUM_INT_INTIEN_REG, 0);
}
inline void
plum_ei(plum_chipset_tag_t pc)
{
struct plumicu_softc *sc = pc->pc_intrt;
plum_conf_write(sc->sc_regt, sc->sc_regh, PLUM_INT_INTIEN_REG,
PLUM_INT_INTIEN);
}
void*
plum_intr_establish(plum_chipset_tag_t pc, int line, int mode, int level,
int (*ih_fun)(void *), void *ih_arg)
{
struct plumicu_softc *sc = pc->pc_intrt;
bus_space_tag_t regt = sc->sc_regt;
bus_space_handle_t regh = sc->sc_regh;
plumreg_t reg;
struct plum_intr_entry *pi;
if (!LEGAL_PRUM_INTR(line)) {
panic("plum_intr_establish: bogus interrupt line");
}
pi = &sc->sc_intr[line];
pi->pi_line = line;
pi->pi_fun = ih_fun;
pi->pi_arg = ih_arg;
pi->pi_ctrl = &pi_ctrl[line];
/* Enable interrupt */
/* status enable */
if (pi->pi_ctrl->ic_senreg) {
reg = plum_conf_read(regt, regh, pi->pi_ctrl->ic_senreg);
reg |= pi->pi_ctrl->ic_senpat;
plum_conf_write(regt, regh, pi->pi_ctrl->ic_senreg, reg);
}
/* interrupt enable */
if (pi->pi_ctrl->ic_ienreg) {
reg = plum_conf_read(regt, regh, pi->pi_ctrl->ic_ienreg);
reg |= pi->pi_ctrl->ic_ienpat;
plum_conf_write(regt, regh, pi->pi_ctrl->ic_ienreg, reg);
}
/* Enable redirect to TX39 core */
DPRINTF(("plum_intr_establish: %d (count=%d)\n", line,
sc->sc_enable_count));
if (sc->sc_enable_count++ == 0)
plum_ei(pc);
pi->pi_enabled = 1;
return (ih_fun);
}
void
plum_intr_disestablish(plum_chipset_tag_t pc, void *arg)
{
struct plumicu_softc *sc = pc->pc_intrt;
bus_space_tag_t regt = sc->sc_regt;
bus_space_handle_t regh = sc->sc_regh;
plumreg_t reg;
struct plum_intr_entry *pi;
int i;
sc = pc->pc_intrt;
for (i = 0; i < PLUM_INTR_MAX; i++) {
pi = &sc->sc_intr[i];
if (pi->pi_fun != arg)
continue;
DPRINTF(("plum_intr_disestablish: %d (count=%d)\n",
pi->pi_line, sc->sc_enable_count - 1));
goto found;
}
panic("plum_intr_disestablish: can't find entry.");
/* NOTREACHED */
found:
pi->pi_enabled = 0;
/* Disable interrupt */
if (pi->pi_ctrl->ic_ienreg) {
reg = plum_conf_read(regt, regh, pi->pi_ctrl->ic_ienreg);
reg &= ~(pi->pi_ctrl->ic_ienpat);
plum_conf_write(regt, regh, pi->pi_ctrl->ic_ienreg, reg);
}
if (pi->pi_ctrl->ic_senreg) {
reg = plum_conf_read(regt, regh, pi->pi_ctrl->ic_senreg);
reg &= ~(pi->pi_ctrl->ic_senpat);
plum_conf_write(regt, regh, pi->pi_ctrl->ic_senreg, reg);
}
/* Disable/Enable interrupt redirect to TX39 core */
if (--sc->sc_enable_count == 0)
plum_di(pc);
}
int
plumicu_intr(void *arg)
{
struct plumicu_softc *sc = arg;
bus_space_tag_t regt = sc->sc_regt;
bus_space_handle_t regh = sc->sc_regh;
plumreg_t reg1, reg2, reg_ext, reg_pccard;
int i;
plum_di(sc->sc_pc);
/* read level 1 status */
reg1 = plum_conf_read(regt, regh, PLUM_INT_INTSTA_REG);
/* read level 2 status and acknowledge */
reg_ext = plum_conf_read(regt, regh, PLUM_INT_EXTINTS_REG);
plum_conf_write(regt, regh, PLUM_INT_EXTINTS_REG, reg_ext);
reg_pccard = plum_conf_read(regt, regh, PLUM_INT_PCCINTS_REG);
plum_conf_write(regt, regh, PLUM_INT_PCCINTS_REG, reg_pccard);
for (i = 0; i < PLUM_INTR_MAX; i++) {
register struct plum_intr_entry *pi;
register const struct plum_intr_ctrl *pic = &pi_ctrl[i];
if (!(pic->ic_ackpat1 & reg1))
continue;
pi = &sc->sc_intr[i];
if (!pi->pi_enabled)
continue;
if (pic->ic_ackreg2 == 0) {
(*pi->pi_fun)(pi->pi_arg);
continue;
}
reg2 = pic->ic_ackreg2 == PLUM_INT_PCCINTS_REG
? reg_pccard : reg_ext;
if (pic->ic_ackpat2 & reg2)
(*pi->pi_fun)(pi->pi_arg);
}
plum_ei(sc->sc_pc);
return (0);
}
#ifdef PLUMICUDEBUG
void
plumicu_dump(struct plumicu_softc *sc)
{
bus_space_tag_t regt = sc->sc_regt;
bus_space_handle_t regh = sc->sc_regh;
plumreg_t reg;
printf("status:");
reg = plum_conf_read(regt, regh, PLUM_INT_INTSTA_REG);
dbg_bit_print(reg);
printf("ExtIO\n");
printf("status:");
reg = plum_conf_read(regt, regh, PLUM_INT_EXTINTS_REG);
dbg_bit_print(reg);
printf("enable:");
reg = plum_conf_read(regt, regh, PLUM_INT_EXTIEN_REG);
dbg_bit_print(reg);
}
#endif /* PLUMICUDEBUG */