* Copyright (c) 1999, 2002

/* $NetBSD: vrip.c,v 1.39 2021/08/07 16:18:54 thorpej Exp $ */

/*-
* Copyright (c) 1999, 2002
* Shin Takemura and PocketBSD Project. 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. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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: vrip.c,v 1.39 2021/08/07 16:18:54 thorpej Exp $");

#include "opt_vr41xx.h"
#include "opt_tx39xx.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>

#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>

#include <hpcmips/vr/vr.h>
#include <hpcmips/vr/vrcpudef.h>
#include <hpcmips/vr/vripunit.h>
#include <hpcmips/vr/vripif.h>
#include <hpcmips/vr/vripreg.h>
#include <hpcmips/vr/vripvar.h>
#include <hpcmips/vr/icureg.h>
#include <hpcmips/vr/cmureg.h>
#include "locators.h"

#ifdef VRIP_DEBUG
#define DPRINTF_ENABLE
#define DPRINTF_DEBUG vrip_debug
#endif
#define USE_HPC_DPRINTF
#include <machine/debug.h>

#ifdef VRIP_DEBUG
#define DBG_BIT_PRINT(reg) if (vrip_debug) dbg_bit_print(reg);
#define DUMP_LEVEL2MASK(sc,arg) if (vrip_debug) __vrip_dump_level2mask(sc,arg)
#else
#define DBG_BIT_PRINT(arg)
#define DUMP_LEVEL2MASK(sc,arg)
#endif

#define VALID_UNIT(sc, unit) (0 <= (unit) && (unit) < (sc)->sc_nunits)

#ifdef SINGLE_VRIP_BASE
int vripmatch(device_t, cfdata_t, void *);
void vripattach(device_t, device_t, void *);
#endif
int vrip_print(void *, const char *);
int vrip_search(device_t, cfdata_t, const int *, void *);
int vrip_intr(void *, vaddr_t, u_int32_t);

int __vrip_power(vrip_chipset_tag_t, int, int);
vrip_intr_handle_t __vrip_intr_establish(vrip_chipset_tag_t, int, int,
int, int(*)(void*), void*);
void __vrip_intr_disestablish(vrip_chipset_tag_t, vrip_intr_handle_t);
void __vrip_intr_setmask1(vrip_chipset_tag_t, vrip_intr_handle_t, int);
void __vrip_intr_setmask2(vrip_chipset_tag_t, vrip_intr_handle_t,
u_int32_t, int);
void __vrip_intr_getstatus2(vrip_chipset_tag_t, vrip_intr_handle_t,
u_int32_t*);
void __vrip_register_cmu(vrip_chipset_tag_t, vrcmu_chipset_tag_t);
void __vrip_register_gpio(vrip_chipset_tag_t, hpcio_chip_t);
void __vrip_register_dmaau(vrip_chipset_tag_t, vrdmaau_chipset_tag_t);
void __vrip_register_dcu(vrip_chipset_tag_t, vrdcu_chipset_tag_t);
void __vrip_dump_level2mask(vrip_chipset_tag_t, void *);

struct vrip_softc *the_vrip_sc = NULL;

static const struct vrip_chipset_tag vrip_chipset_methods = {
.vc_power = __vrip_power,
.vc_intr_establish = __vrip_intr_establish,
.vc_intr_disestablish = __vrip_intr_disestablish,
.vc_intr_setmask1 = __vrip_intr_setmask1,
.vc_intr_setmask2 = __vrip_intr_setmask2,
.vc_intr_getstatus2 = __vrip_intr_getstatus2,
.vc_register_cmu = __vrip_register_cmu,
.vc_register_gpio = __vrip_register_gpio,
.vc_register_dmaau = __vrip_register_dmaau,
.vc_register_dcu = __vrip_register_dcu,
};

#ifdef SINGLE_VRIP_BASE
CFATTACH_DECL_NEW(vrip, sizeof(struct vrip_softc),
vripmatch, vripattach, NULL, NULL);

static const struct vrip_unit vrip_units[] = {
[VRIP_UNIT_PMU] = { "pmu",
{ VRIP_INTR_POWER, VRIP_INTR_BAT, }, },
[VRIP_UNIT_RTC] = { "rtc",
{ VRIP_INTR_RTCL1, }, },
[VRIP_UNIT_PIU] = { "piu",
{ VRIP_INTR_PIU, },
CMUMASK_PIU,
ICUPIUINT_REG_W, MPIUINT_REG_W },
[VRIP_UNIT_KIU] = { "kiu",
{ VRIP_INTR_KIU, },
CMUMASK_KIU,
KIUINT_REG_W, MKIUINT_REG_W },
[VRIP_UNIT_SIU] = { "siu",
{ VRIP_INTR_SIU, }, },
[VRIP_UNIT_GIU] = { "giu",
{ VRIP_INTR_GIU, },
0,
GIUINT_L_REG_W,MGIUINT_L_REG_W,
GIUINT_H_REG_W, MGIUINT_H_REG_W },
[VRIP_UNIT_LED] = { "led",
{ VRIP_INTR_LED, }, },
[VRIP_UNIT_AIU] = { "aiu",
{ VRIP_INTR_AIU, },
CMUMASK_AIU,
AIUINT_REG_W, MAIUINT_REG_W },
[VRIP_UNIT_FIR] = { "fir",
{ VRIP_INTR_FIR, },
CMUMASK_FIR,
FIRINT_REG_W, MFIRINT_REG_W },
[VRIP_UNIT_DSIU]= { "dsiu",
{ VRIP_INTR_DSIU, },
CMUMASK_DSIU,
DSIUINT_REG_W, MDSIUINT_REG_W },
[VRIP_UNIT_PCIU]= { "pciu",
{ VRIP_INTR_PCI, },
CMUMASK_PCIU,
PCIINT_REG_W, MPCIINT_REG_W },
[VRIP_UNIT_SCU] = { "scu",
{ VRIP_INTR_SCU, },
0,
SCUINT_REG_W, MSCUINT_REG_W },
[VRIP_UNIT_CSI] = { "csi",
{ VRIP_INTR_CSI, },
CMUMASK_CSI,
CSIINT_REG_W, MCSIINT_REG_W },
[VRIP_UNIT_BCU] = { "bcu",
{ VRIP_INTR_BCU, },
0,
BCUINT_REG_W, MBCUINT_REG_W },
};

void
vripattach(device_t parent, device_t self, void *aux)
{
struct vrip_softc *sc = device_private(self);

printf("\n");

sc->sc_units = vrip_units;
sc->sc_nunits = sizeof(vrip_units)/sizeof(struct vrip_unit);
sc->sc_icu_addr = VRIP_ICU_ADDR;
sc->sc_sysint2 = SYSINT2_REG_W;
sc->sc_msysint2 = MSYSINT2_REG_W;

vripattach_common(parent, self, aux);
}
#endif /* SINGLE_VRIP_BASE */

int
vripmatch(device_t parent, cfdata_t match, void *aux)
{
struct mainbus_attach_args *ma = aux;

#if defined(SINGLE_VRIP_BASE) && defined(TX39XX)
if (!platid_match(&platid, &platid_mask_CPU_MIPS_VR_41XX))
return (0);
#endif /* SINGLE_VRIP_BASE && TX39XX */
if (strcmp(ma->ma_name, match->cf_name))
return (0);

return (1);
}

void
vripattach_common(device_t parent, device_t self, void *aux)
{
struct mainbus_attach_args *ma = aux;
struct vrip_softc *sc = device_private(self);

sc->sc_chipset = vrip_chipset_methods; /* structure assignment */
sc->sc_chipset.vc_sc = sc;

#ifdef DIAGNOSTIC
if (sc->sc_icu_addr == 0 ||
sc->sc_sysint2 == 0 ||
sc->sc_msysint2 == 0)
panic("vripattach: missing register info.");
#endif /* DIAGNOSTIC */

/*
* Map ICU (Interrupt Control Unit) register space.
*/
sc->sc_iot = ma->ma_iot;
if (bus_space_map(sc->sc_iot, sc->sc_icu_addr,
0x20 /*XXX lower area only*/,
0, /* no flags */
&sc->sc_ioh)) {
printf("vripattach: can't map ICU register.\n");
return;
}

/*
* Disable all Level 1 interrupts.
*/
sc->sc_intrmask = 0;
bus_space_write_2(sc->sc_iot, sc->sc_ioh, MSYSINT1_REG_W, 0x0000);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, sc->sc_msysint2, 0x0000);
/*
* Level 1 interrupts are redirected to HwInt0
*/
vr_intr_establish(VR_INTR0, vrip_intr, sc);
the_vrip_sc = sc;
/*
* Attach each devices
* GIU CMU DMAAU DCU interface interface is used by other system
* device. so attach first
*/
sc->sc_pri = 2;
config_search(self, NULL,
CFARGS(.search = vrip_search));

/* Other system devices. */
sc->sc_pri = 1;
config_search(self, NULL,
CFARGS(.search = vrip_search));
}

int
vrip_print(void *aux, const char *hoge)
{
struct vrip_attach_args *va = (struct vrip_attach_args*)aux;
bus_addr_t endaddr, mask;

if (va->va_addr != VRIPIFCF_ADDR_DEFAULT)
aprint_normal(" addr 0x%08lx", va->va_addr);
if (va->va_size != VRIPIFCF_SIZE_DEFAULT) {
endaddr = (va->va_addr + va->va_size - 1);
mask = ((va->va_addr ^ endaddr) & 0xff0000) ? 0xffffff:0xffff;
aprint_normal("-%04lx", endaddr & mask);
}
if (va->va_addr2 != VRIPIFCF_ADDR2_DEFAULT)
aprint_normal(", 0x%08lx", va->va_addr2);
if (va->va_size2 != VRIPIFCF_SIZE2_DEFAULT)
aprint_normal("-%04lx",
(va->va_addr2 + va->va_size2 - 1) & 0xffff);

return (UNCONF);
}

int
vrip_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
{
struct vrip_softc *sc = device_private(parent);
struct vrip_attach_args va;
platid_mask_t mask;

if (cf->cf_loc[VRIPIFCF_PLATFORM] != VRIPIFCF_PLATFORM_DEFAULT) {
mask = PLATID_DEREF(cf->cf_loc[VRIPIFCF_PLATFORM]);
if (platid_match(&platid, &mask) == 0)
return (0);
}

memset(&va, 0, sizeof(va));
va.va_vc = &sc->sc_chipset;
va.va_iot = sc->sc_iot;
va.va_unit = cf->cf_loc[VRIPIFCF_UNIT];
va.va_addr = cf->cf_loc[VRIPIFCF_ADDR];
va.va_size = cf->cf_loc[VRIPIFCF_SIZE];
va.va_addr2 = cf->cf_loc[VRIPIFCF_ADDR2];
va.va_size2 = cf->cf_loc[VRIPIFCF_SIZE2];
va.va_gpio_chips = sc->sc_gpio_chips;
va.va_cc = sc->sc_chipset.vc_cc;
va.va_ac = sc->sc_chipset.vc_ac;
va.va_dc = sc->sc_chipset.vc_dc;
if (/*XXX*/config_probe(parent, cf, &va) == sc->sc_pri)
config_attach(parent, cf, &va, vrip_print, CFARGS_NONE);

return (0);
}

int
__vrip_power(vrip_chipset_tag_t vc, int unit, int onoff)
{
struct vrip_softc *sc = vc->vc_sc;
const struct vrip_unit *vu;

if (sc->sc_chipset.vc_cc == NULL)
return (0); /* You have no clock mask unit yet. */
if (!VALID_UNIT(sc, unit))
return (0);
vu = &sc->sc_units[unit];

return (*sc->sc_chipset.vc_cc->cc_clock)(sc->sc_chipset.vc_cc,
vu->vu_clkmask, onoff);
}

vrip_intr_handle_t
__vrip_intr_establish(vrip_chipset_tag_t vc, int unit, int line, int level,
int (*ih_fun)(void *), void *ih_arg)
{
struct vrip_softc *sc = vc->vc_sc;
const struct vrip_unit *vu;
struct intrhand *ih;

if (!VALID_UNIT(sc, unit))
return (NULL);
vu = &sc->sc_units[unit];
ih = &sc->sc_intrhands[vu->vu_intr[line]];
if (ih->ih_fun) /* Can't share level 1 interrupt */
return (NULL);
ih->ih_fun = ih_fun;
ih->ih_arg = ih_arg;
ih->ih_unit = vu;

/* Mask level 2 interrupt mask register. (disable interrupt) */
vrip_intr_setmask2(vc, ih, ~0, 0);
/* Unmask Level 1 interrupt mask register (enable interrupt) */
vrip_intr_setmask1(vc, ih, 1);

return ((void *)ih);
}

void
__vrip_intr_disestablish(vrip_chipset_tag_t vc, vrip_intr_handle_t handle)
{
struct intrhand *ih = handle;

ih->ih_fun = NULL;
ih->ih_arg = NULL;
/* Mask level 2 interrupt mask register(if any). (disable interrupt) */
vrip_intr_setmask2(vc, ih, ~0, 0);
/* Mask Level 1 interrupt mask register (disable interrupt) */
vrip_intr_setmask1(vc, ih, 0);
}

void
vrip_intr_suspend(void)
{
struct vrip_softc *sc = the_vrip_sc;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;

bus_space_write_2 (iot, ioh, MSYSINT1_REG_W, (1<<VRIP_INTR_POWER));
bus_space_write_2 (iot, ioh, sc->sc_msysint2, 0);
}

void
vrip_intr_resume(void)
{
struct vrip_softc *sc = the_vrip_sc;
u_int32_t reg = sc->sc_intrmask;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;

bus_space_write_2 (iot, ioh, MSYSINT1_REG_W, reg & 0xffff);
bus_space_write_2 (iot, ioh, sc->sc_msysint2, (reg >> 16) & 0xffff);
}

/* Set level 1 interrupt mask. */
void
__vrip_intr_setmask1(vrip_chipset_tag_t vc, vrip_intr_handle_t handle,
int enable)
{
struct vrip_softc *sc = vc->vc_sc;
struct intrhand *ih = handle;
int level1 = ih - sc->sc_intrhands;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
u_int32_t reg = sc->sc_intrmask;

DPRINTF(("__vrip_intr_setmask1: SYSINT: %s %d\n",
enable ? "enable" : "disable", level1));
reg = (bus_space_read_2 (iot, ioh, MSYSINT1_REG_W)&0xffff) |
((bus_space_read_2 (iot, ioh, sc->sc_msysint2) << 16)&0xffff0000);
if (enable)
reg |= (1 << level1);
else {
reg &= ~(1 << level1);
}
sc->sc_intrmask = reg;
bus_space_write_2 (iot, ioh, MSYSINT1_REG_W, reg & 0xffff);
bus_space_write_2 (iot, ioh, sc->sc_msysint2, (reg >> 16) & 0xffff);
DBG_BIT_PRINT(reg);

return;
}

void
__vrip_dump_level2mask(vrip_chipset_tag_t vc, vrip_intr_handle_t handle)
{
struct vrip_softc *sc = vc->vc_sc;
struct intrhand *ih = handle;
const struct vrip_unit *vu = ih->ih_unit;
u_int32_t reg;

if (vu->vu_mlreg) {
DPRINTF(("level1[%d] level2 mask:", vu->vu_intr[0]));
reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, vu->vu_mlreg);
if (vu->vu_mhreg) { /* GIU [16:31] case only */
reg |= (bus_space_read_2(sc->sc_iot, sc->sc_ioh,
vu->vu_mhreg) << 16);
dbg_bit_print(reg);
} else
dbg_bit_print(reg);
}
}

/* Get level 2 interrupt status */
void
__vrip_intr_getstatus2(vrip_chipset_tag_t vc, vrip_intr_handle_t handle,
u_int32_t *mask /* Level 2 mask */)
{
struct vrip_softc *sc = vc->vc_sc;
struct intrhand *ih = handle;
const struct vrip_unit *vu = ih->ih_unit;
u_int32_t reg;

reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh,
vu->vu_lreg);
reg |= ((bus_space_read_2(sc->sc_iot, sc->sc_ioh,
vu->vu_hreg) << 16)&0xffff0000);
/* dbg_bit_print(reg);*/
*mask = reg;
}

/* Set level 2 interrupt mask. */
void
__vrip_intr_setmask2(vrip_chipset_tag_t vc, vrip_intr_handle_t handle,
u_int32_t mask /* Level 2 mask */, int onoff)
{
struct vrip_softc *sc = vc->vc_sc;
struct intrhand *ih = handle;
const struct vrip_unit *vu = ih->ih_unit;
u_int16_t reg;

DPRINTF(("vrip_intr_setmask2:\n"));
DUMP_LEVEL2MASK(vc, handle);
#ifdef WINCE_DEFAULT_SETTING
#warning WINCE_DEFAULT_SETTING
#else
if (vu->vu_mlreg) {
reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, vu->vu_mlreg);
if (onoff)
reg |= (mask&0xffff);
else
reg &= ~(mask&0xffff);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, vu->vu_mlreg, reg);
if (vu->vu_mhreg != 0) { /* GIU [16:31] case only */
reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh,
vu->vu_mhreg);
if (onoff)
reg |= ((mask >> 16) & 0xffff);
else
reg &= ~((mask >> 16) & 0xffff);
bus_space_write_2(sc->sc_iot, sc->sc_ioh,
vu->vu_mhreg, reg);
}
}
#endif /* WINCE_DEFAULT_SETTING */
DUMP_LEVEL2MASK(vc, handle);

return;
}

int
vrip_intr(void *arg, vaddr_t pc, u_int32_t status)
{
struct vrip_softc *sc = (struct vrip_softc *)arg;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
int i;
u_int32_t reg, mask;
/*
* Read level1 interrupt status.
*/
reg = (bus_space_read_2 (iot, ioh, SYSINT1_REG_W)&0xffff) |
((bus_space_read_2 (iot, ioh, sc->sc_sysint2)<< 16)&0xffff0000);
mask = (bus_space_read_2 (iot, ioh, MSYSINT1_REG_W)&0xffff) |
((bus_space_read_2 (iot, ioh, sc->sc_msysint2)<< 16)&0xffff0000);
reg &= mask;

/*
* Dispatch each handler.
*/
for (i = 0; i < 32; i++) {
register struct intrhand *ih = &sc->sc_intrhands[i];
if (ih->ih_fun && (reg & (1 << i))) {
ih->ih_fun(ih->ih_arg);
}
}

return (1);
}

void
__vrip_register_cmu(vrip_chipset_tag_t vc, vrcmu_chipset_tag_t cmu)
{
struct vrip_softc *sc = vc->vc_sc;

sc->sc_chipset.vc_cc = cmu;
}

void
__vrip_register_gpio(vrip_chipset_tag_t vc, hpcio_chip_t chip)
{
struct vrip_softc *sc = vc->vc_sc;

if (chip->hc_chipid < 0 || VRIP_NIOCHIPS <= chip->hc_chipid)
panic("%s: '%s' has unknown id, %d", __func__,
chip->hc_name, chip->hc_chipid);
sc->sc_gpio_chips[chip->hc_chipid] = chip;
}

void
__vrip_register_dmaau(vrip_chipset_tag_t vc, vrdmaau_chipset_tag_t dmaau)
{
struct vrip_softc *sc = vc->vc_sc;

sc->sc_chipset.vc_ac = dmaau;
}

void
__vrip_register_dcu(vrip_chipset_tag_t vc, vrdcu_chipset_tag_t dcu)
{
struct vrip_softc *sc = vc->vc_sc;

sc->sc_chipset.vc_dc = dcu;
}