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19df33b637
freebsd/sys/alpha/tc/tc.c
Doug Rabson 19df33b637 Add support for TurboChannel alphas (DEC 3000/300 and 3000/500). 
Obtained from: NetBSD
Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
1998-08-20 08:27:11 +00:00

705 lines
21 KiB
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/* $Id$ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include "opt_cpu.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/rpb.h>
#include <alpha/tc/tcreg.h>
#include <alpha/tc/tcvar.h>
#include <alpha/tc/tcdevs.h>
#include <alpha/tc/ioasicreg.h>
/*#include <alpha/tc/dwlpxreg.h>*/
#define KV(pa) ALPHA_PHYS_TO_K0SEG(pa)
static devclass_t tc_devclass;
device_t tc0; /* XXX only one for now */
struct tc_softc {
device_t sc_dv;
int sc_speed;
int sc_nslots;
int nbuiltins;
struct tc_builtin *builtins;
struct tc_slotdesc *sc_slots;
void (*sc_intr_establish) __P((struct device *, void *,
tc_intrlevel_t, int (*)(void *), void *));
void (*sc_intr_disestablish) __P((struct device *, void *));
/* bus_dma_tag_t (*sc_get_dma_tag) __P((int));
*/
};
#define NTC_ROMOFFS 2
static tc_offset_t tc_slot_romoffs[NTC_ROMOFFS] = {
TC_SLOT_ROM,
TC_SLOT_PROTOROM,
};
#define TC_SOFTC(dev) (struct tc_softc*) device_get_softc(dev)
static int tc_probe(device_t dev);
static int tc_attach(device_t dev);
static void tc_print_child(device_t bus, device_t dev);
static driver_intr_t tc_intr;
int tc_checkslot( tc_addr_t slotbase, char *namep);
static device_method_t tc_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, tc_probe),
DEVMETHOD(device_attach, tc_attach),
/* Bus interface */
DEVMETHOD(bus_print_child, tc_print_child),
{ 0, 0 },
};
static driver_t tc_driver = {
"tc",
tc_methods,
DRIVER_TYPE_MISC,
sizeof(struct tc_softc),
};
#define C(x) ((void *)(u_long)x)
int tc_intrnull __P((void *));
struct tcintr {
int (*tci_func) __P((void *));
void *tci_arg;
};
#ifdef DEC_3000_300
void tc_3000_300_intr_setup __P((void));
void tc_3000_300_intr_establish __P((struct device *, void *,
tc_intrlevel_t, int (*)(void *), void *));
void tc_3000_300_intr_disestablish __P((struct device *, void *));
void tc_3000_300_iointr __P((void *, unsigned long));
#define DEC_3000_300_IOASIC_ADDR KV(0x1a0000000)
struct tc_slotdesc tc_3000_300_slots[] = {
{ KV(0x100000000), C(TC_3000_300_DEV_OPT0), }, /* 0 - opt slot 0 */
{ KV(0x120000000), C(TC_3000_300_DEV_OPT1), }, /* 1 - opt slot 1 */
{ KV(0x180000000), C(TC_3000_300_DEV_BOGUS), }, /* 2 - TCDS ASIC */
{ KV(0x1a0000000), C(TC_3000_300_DEV_BOGUS), }, /* 3 - IOCTL ASIC */
{ KV(0x1c0000000), C(TC_3000_300_DEV_CXTURBO), }, /* 4 - CXTurbo */
};
int tc_3000_300_nslots =
sizeof(tc_3000_300_slots) / sizeof(tc_3000_300_slots[0]);
struct tc_builtin tc_3000_300_builtins[] = {
#ifdef notyet
{ "PMAGB-BA", 4, 0x02000000, C(TC_3000_300_DEV_CXTURBO), },
#endif
{ "ioasic", 3, 0x00000000, C(TC_3000_300_DEV_IOASIC), },
{ "tcds", 2, 0x00000000, C(TC_3000_300_DEV_TCDS), },
};
int tc_3000_300_nbuiltins =
sizeof(tc_3000_300_builtins) / sizeof(tc_3000_300_builtins[0]);
struct tcintr tc_3000_300_intr[TC_3000_300_NCOOKIES];
#endif /* DEC_3000_300 */
#ifdef DEC_3000_500
void tc_3000_500_intr_setup __P((void));
void tc_3000_500_intr_establish __P((struct device *, void *,
tc_intrlevel_t, int (*)(void *), void *));
void tc_3000_500_intr_disestablish __P((struct device *, void *));
void tc_3000_500_iointr __P((void *, unsigned long));
struct tc_slotdesc tc_3000_500_slots[] = {
{ KV(0x100000000), C(TC_3000_500_DEV_OPT0), }, /* 0 - opt slot 0 */
{ KV(0x120000000), C(TC_3000_500_DEV_OPT1), }, /* 1 - opt slot 1 */
{ KV(0x140000000), C(TC_3000_500_DEV_OPT2), }, /* 2 - opt slot 2 */
{ KV(0x160000000), C(TC_3000_500_DEV_OPT3), }, /* 3 - opt slot 3 */
{ KV(0x180000000), C(TC_3000_500_DEV_OPT4), }, /* 4 - opt slot 4 */
{ KV(0x1a0000000), C(TC_3000_500_DEV_OPT5), }, /* 5 - opt slot 5 */
{ KV(0x1c0000000), C(TC_3000_500_DEV_BOGUS), }, /* 6 - TCDS ASIC */
{ KV(0x1e0000000), C(TC_3000_500_DEV_BOGUS), }, /* 7 - IOCTL ASIC */
};
int tc_3000_500_nslots =
sizeof(tc_3000_500_slots) / sizeof(tc_3000_500_slots[0]);
struct tc_builtin tc_3000_500_builtins[] = {
{ "ioasic", 7, 0x00000000, C(TC_3000_500_DEV_IOASIC), },
#ifdef notyet
{ "PMAGB-BA", 7, 0x02000000, C(TC_3000_500_DEV_CXTURBO), },
#endif
{ "tcds", 6, 0x00000000, C(TC_3000_500_DEV_TCDS), },
};
int tc_3000_500_nbuiltins = sizeof(tc_3000_500_builtins) /
sizeof(tc_3000_500_builtins[0]);
u_int32_t tc_3000_500_intrbits[TC_3000_500_NCOOKIES] = {
TC_3000_500_IR_OPT0,
TC_3000_500_IR_OPT1,
TC_3000_500_IR_OPT2,
TC_3000_500_IR_OPT3,
TC_3000_500_IR_OPT4,
TC_3000_500_IR_OPT5,
TC_3000_500_IR_TCDS,
TC_3000_500_IR_IOASIC,
TC_3000_500_IR_CXTURBO,
};
struct tcintr tc_3000_500_intr[TC_3000_500_NCOOKIES];
u_int32_t tc_3000_500_imask; /* intrs we want to ignore; mirrors IMR. */
#endif /* DEC_3000_500 */
#ifdef DEC_3000_300
void
tc_3000_300_intr_setup()
{
volatile u_int32_t *imskp;
u_long i;
/*
* Disable all interrupts that we can (can't disable builtins).
*/
imskp = (volatile u_int32_t *)IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
*imskp &= ~(IOASIC_INTR_300_OPT0 | IOASIC_INTR_300_OPT1);
/*
* Set up interrupt handlers.
*/
for (i = 0; i < TC_3000_300_NCOOKIES; i++) {
tc_3000_300_intr[i].tci_func = tc_intrnull;
tc_3000_300_intr[i].tci_arg = (void *)i;
}
}
void
tc_3000_300_intr_establish(tcadev, cookie, level, func, arg)
struct device *tcadev;
void *cookie, *arg;
tc_intrlevel_t level;
int (*func) __P((void *));
{
volatile u_int32_t *imskp;
u_long dev = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX bounds-check cookie. */
#endif
if (tc_3000_300_intr[dev].tci_func != tc_intrnull)
panic("tc_3000_300_intr_establish: cookie %d twice", dev);
tc_3000_300_intr[dev].tci_func = func;
tc_3000_300_intr[dev].tci_arg = arg;
imskp = (volatile u_int32_t *)IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
switch (dev) {
case TC_3000_300_DEV_OPT0:
*imskp |= IOASIC_INTR_300_OPT0;
break;
case TC_3000_300_DEV_OPT1:
*imskp |= IOASIC_INTR_300_OPT1;
break;
default:
/* interrupts for builtins always enabled */
break;
}
}
void
tc_3000_300_intr_disestablish(tcadev, cookie)
struct device *tcadev;
void *cookie;
{
volatile u_int32_t *imskp;
u_long dev = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX bounds-check cookie. */
#endif
if (tc_3000_300_intr[dev].tci_func == tc_intrnull)
panic("tc_3000_300_intr_disestablish: cookie %d bad intr",
dev);
imskp = (volatile u_int32_t *)IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
switch (dev) {
case TC_3000_300_DEV_OPT0:
*imskp &= ~IOASIC_INTR_300_OPT0;
break;
case TC_3000_300_DEV_OPT1:
*imskp &= ~IOASIC_INTR_300_OPT1;
break;
default:
/* interrupts for builtins always enabled */
break;
}
tc_3000_300_intr[dev].tci_func = tc_intrnull;
tc_3000_300_intr[dev].tci_arg = (void *)dev;
}
void
tc_3000_300_iointr(framep, vec)
void *framep;
unsigned long vec;
{
u_int32_t tcir, ioasicir, ioasicimr;
int ifound;
#ifdef DIAGNOSTIC
int s;
if (vec != 0x800)
panic("INVALID ASSUMPTION: vec 0x%lx, not 0x800", vec);
s = splhigh();
if (s != ALPHA_PSL_IPL_IO)
panic("INVALID ASSUMPTION: IPL %d, not %d", s,
ALPHA_PSL_IPL_IO);
splx(s);
#endif
do {
tc_syncbus();
/* find out what interrupts/errors occurred */
tcir = *(volatile u_int32_t *)TC_3000_300_IR;
ioasicir = *(volatile u_int32_t *)
IOASIC_REG_INTR(DEC_3000_300_IOASIC_ADDR);
ioasicimr = *(volatile u_int32_t *)
IOASIC_REG_IMSK(DEC_3000_300_IOASIC_ADDR);
tc_mb();
/* Ignore interrupts that aren't enabled out. */
ioasicir &= ioasicimr;
/* clear the interrupts/errors we found. */
*(volatile u_int32_t *)TC_3000_300_IR = tcir;
/* XXX can't clear TC option slot interrupts here? */
tc_wmb();
ifound = 0;
#define CHECKINTR(slot, flag) \
if (flag) { \
ifound = 1; \
(*tc_3000_300_intr[slot].tci_func) \
(tc_3000_300_intr[slot].tci_arg); \
}
/* Do them in order of priority; highest slot # first. */
CHECKINTR(TC_3000_300_DEV_CXTURBO,
tcir & TC_3000_300_IR_CXTURBO);
CHECKINTR(TC_3000_300_DEV_IOASIC,
(tcir & TC_3000_300_IR_IOASIC) &&
(ioasicir & ~(IOASIC_INTR_300_OPT1|IOASIC_INTR_300_OPT0)));
CHECKINTR(TC_3000_300_DEV_TCDS, tcir & TC_3000_300_IR_TCDS);
CHECKINTR(TC_3000_300_DEV_OPT1,
ioasicir & IOASIC_INTR_300_OPT1);
CHECKINTR(TC_3000_300_DEV_OPT0,
ioasicir & IOASIC_INTR_300_OPT0);
#undef CHECKINTR
#ifdef DIAGNOSTIC
#define PRINTINTR(msg, bits) \
if (tcir & bits) \
printf(msg);
PRINTINTR("BCache tag parity error\n",
TC_3000_300_IR_BCTAGPARITY);
PRINTINTR("TC overrun error\n", TC_3000_300_IR_TCOVERRUN);
PRINTINTR("TC I/O timeout\n", TC_3000_300_IR_TCTIMEOUT);
PRINTINTR("Bcache parity error\n",
TC_3000_300_IR_BCACHEPARITY);
PRINTINTR("Memory parity error\n", TC_3000_300_IR_MEMPARITY);
#undef PRINTINTR
#endif
} while (ifound);
}
#endif /* DEC_3000_300 */
#ifdef DEC_3000_500
void
tc_3000_500_intr_setup()
{
u_long i;
/*
* Disable all slot interrupts. Note that this cannot
* actually disable CXTurbo, TCDS, and IOASIC interrupts.
*/
tc_3000_500_imask = *(volatile u_int32_t *)TC_3000_500_IMR_READ;
for (i = 0; i < TC_3000_500_NCOOKIES; i++)
tc_3000_500_imask |= tc_3000_500_intrbits[i];
*(volatile u_int32_t *)TC_3000_500_IMR_WRITE = tc_3000_500_imask;
tc_mb();
/*
* Set up interrupt handlers.
*/
for (i = 0; i < TC_3000_500_NCOOKIES; i++) {
tc_3000_500_intr[i].tci_func = tc_intrnull;
tc_3000_500_intr[i].tci_arg = (void *)i;
}
}
void
tc_3000_500_intr_establish(tcadev, cookie, level, func, arg)
struct device *tcadev;
void *cookie, *arg;
tc_intrlevel_t level;
int (*func) __P((void *));
{
u_long dev = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX bounds-check cookie. */
#endif
if (tc_3000_500_intr[dev].tci_func != tc_intrnull)
panic("tc_3000_500_intr_establish: cookie %d twice", dev);
tc_3000_500_intr[dev].tci_func = func;
tc_3000_500_intr[dev].tci_arg = arg;
tc_3000_500_imask &= ~tc_3000_500_intrbits[dev];
*(volatile u_int32_t *)TC_3000_500_IMR_WRITE = tc_3000_500_imask;
tc_mb();
}
void
tc_3000_500_intr_disestablish(tcadev, cookie)
struct device *tcadev;
void *cookie;
{
u_long dev = (u_long)cookie;
#ifdef DIAGNOSTIC
/* XXX bounds-check cookie. */
#endif
if (tc_3000_500_intr[dev].tci_func == tc_intrnull)
panic("tc_3000_500_intr_disestablish: cookie %d bad intr",
dev);
tc_3000_500_imask |= tc_3000_500_intrbits[dev];
*(volatile u_int32_t *)TC_3000_500_IMR_WRITE = tc_3000_500_imask;
tc_mb();
tc_3000_500_intr[dev].tci_func = tc_intrnull;
tc_3000_500_intr[dev].tci_arg = (void *)dev;
}
void
tc_3000_500_iointr(framep, vec)
void *framep;
unsigned long vec;
{
u_int32_t ir;
int ifound;
#ifdef DIAGNOSTIC
int s;
if (vec != 0x800)
panic("INVALID ASSUMPTION: vec 0x%lx, not 0x800", vec);
s = splhigh();
if (s != ALPHA_PSL_IPL_IO)
panic("INVALID ASSUMPTION: IPL %d, not %d", s,
ALPHA_PSL_IPL_IO);
splx(s);
#endif
do {
tc_syncbus();
ir = *(volatile u_int32_t *)TC_3000_500_IR_CLEAR;
/* Ignore interrupts that we haven't enabled. */
ir &= ~(tc_3000_500_imask & 0x1ff);
ifound = 0;
#define CHECKINTR(slot) \
if (ir & tc_3000_500_intrbits[slot]) { \
ifound = 1; \
(*tc_3000_500_intr[slot].tci_func) \
(tc_3000_500_intr[slot].tci_arg); \
}
/* Do them in order of priority; highest slot # first. */
CHECKINTR(TC_3000_500_DEV_CXTURBO);
CHECKINTR(TC_3000_500_DEV_IOASIC);
CHECKINTR(TC_3000_500_DEV_TCDS);
CHECKINTR(TC_3000_500_DEV_OPT5);
CHECKINTR(TC_3000_500_DEV_OPT4);
CHECKINTR(TC_3000_500_DEV_OPT3);
CHECKINTR(TC_3000_500_DEV_OPT2);
CHECKINTR(TC_3000_500_DEV_OPT1);
CHECKINTR(TC_3000_500_DEV_OPT0);
#undef CHECKINTR
#ifdef DIAGNOSTIC
#define PRINTINTR(msg, bits) \
if (ir & bits) \
printf(msg);
PRINTINTR("Second error occurred\n", TC_3000_500_IR_ERR2);
PRINTINTR("DMA buffer error\n", TC_3000_500_IR_DMABE);
PRINTINTR("DMA cross 2K boundary\n", TC_3000_500_IR_DMA2K);
PRINTINTR("TC reset in progress\n", TC_3000_500_IR_TCRESET);
PRINTINTR("TC parity error\n", TC_3000_500_IR_TCPAR);
PRINTINTR("DMA tag error\n", TC_3000_500_IR_DMATAG);
PRINTINTR("Single-bit error\n", TC_3000_500_IR_DMASBE);
PRINTINTR("Double-bit error\n", TC_3000_500_IR_DMADBE);
PRINTINTR("TC I/O timeout\n", TC_3000_500_IR_TCTIMEOUT);
PRINTINTR("DMA block too long\n", TC_3000_500_IR_DMABLOCK);
PRINTINTR("Invalid I/O address\n", TC_3000_500_IR_IOADDR);
PRINTINTR("DMA scatter/gather invalid\n", TC_3000_500_IR_DMASG);
PRINTINTR("Scatter/gather parity error\n",
TC_3000_500_IR_SGPAR);
#undef PRINTINTR
#endif
} while (ifound);
}
#if 0
/*
* tc_3000_500_ioslot --
* Set the PBS bits for devices on the TC.
*/
void
tc_3000_500_ioslot(slot, flags, set)
u_int32_t slot, flags;
int set;
{
volatile u_int32_t *iosp;
u_int32_t ios;
int s;
iosp = (volatile u_int32_t *)TC_3000_500_IOSLOT;
ios = *iosp;
flags <<= (slot * 3);
if (set)
ios |= flags;
else
ios &= ~flags;
s = splhigh();
*iosp = ios;
tc_mb();
splx(s);
}
#endif
#endif /* DEC_3000_500 */
int
tc_intrnull(val)
void *val;
{
panic("tc_intrnull: uncaught TC intr for cookie %ld\n",
(u_long)val);
}
static int
tc_probe(device_t dev)
{
if((hwrpb->rpb_type != ST_DEC_3000_300) &&
(hwrpb->rpb_type != ST_DEC_3000_500))
return ENXIO;
tc0 = dev;
if(hwrpb->rpb_type == ST_DEC_3000_300) {
device_set_desc(dev, "12.5 Mhz Turbochannel Bus");
} else {
device_set_desc(dev, "25 Mhz Turbochannel Bus");
}
return 0;
}
static int
tc_attach(device_t dev)
{
struct tc_softc* sc = TC_SOFTC(dev);
device_t parent = device_get_parent(dev);
vm_offset_t regs;
tc_addr_t tcaddr;
const struct tc_builtin *builtin;
struct tc_slotdesc *slot;
struct tc_attach_args *ta;
int i;
device_t child = NULL;
tc0 = dev;
chipset.intrdev = dev;
switch(hwrpb->rpb_type){
#ifdef DEC_3000_300
case ST_DEC_3000_300:
sc->sc_speed = TC_SPEED_12_5_MHZ;
sc->sc_nslots = tc_3000_300_nslots;
sc->sc_slots = tc_3000_300_slots;
sc->nbuiltins = tc_3000_300_nbuiltins;
sc->builtins = tc_3000_300_builtins;
tc_3000_300_intr_setup();
set_iointr(tc_3000_300_iointr);
sc->sc_intr_establish = tc_3000_300_intr_establish;
sc->sc_intr_disestablish = tc_3000_300_intr_disestablish;
break;
#endif /* DEC_3000_500 */
#ifdef DEC_3000_500
case ST_DEC_3000_500:
sc->sc_speed = TC_SPEED_25_MHZ;
sc->sc_nslots = tc_3000_500_nslots;
sc->sc_slots = tc_3000_500_slots;
sc->nbuiltins = tc_3000_500_nbuiltins;
sc->builtins = tc_3000_500_builtins;
tc_3000_500_intr_setup();
set_iointr(tc_3000_500_iointr);
sc->sc_intr_establish = tc_3000_500_intr_establish;
sc->sc_intr_disestablish = tc_3000_500_intr_disestablish;
break;
#endif /* DEC_3000_500 */
default:
panic("tcattach: bad cpu type");
}
/*
* Try to configure each built-in device
*/
for (i = 0; i < sc->nbuiltins; i++) {
builtin = &sc->builtins[i];
tcaddr = sc->sc_slots[builtin->tcb_slot].tcs_addr +
builtin->tcb_offset;
if (tc_badaddr(tcaddr))
continue;
ta = malloc(sizeof(struct tc_attach_args), M_DEVBUF, M_NOWAIT);
if (!ta)
continue;
ta->ta_slot = builtin->tcb_slot;
ta->ta_offset = builtin->tcb_offset;
ta->ta_addr = tcaddr;
ta->ta_cookie = builtin->tcb_cookie;
ta->ta_busspeed = sc->sc_speed;
child = device_add_child(dev, builtin->tcb_modname, 0, ta);
device_probe_and_attach(child);
}
return 0;
}
int
tc_checkslot(slotbase, namep)
tc_addr_t slotbase;
char *namep;
{
struct tc_rommap *romp;
int i, j;
for (i = 0; i < NTC_ROMOFFS; i++) {
romp = (struct tc_rommap *)
(slotbase + tc_slot_romoffs[i]);
switch (romp->tcr_width.v) {
case 1:
case 2:
case 4:
break;
default:
continue;
}
if (romp->tcr_stride.v != 4)
continue;
for (j = 0; j < 4; j++)
if (romp->tcr_test[j+0*romp->tcr_stride.v] != 0x55 ||
romp->tcr_test[j+1*romp->tcr_stride.v] != 0x00 ||
romp->tcr_test[j+2*romp->tcr_stride.v] != 0xaa ||
romp->tcr_test[j+3*romp->tcr_stride.v] != 0xff)
continue;
for (j = 0; j < TC_ROM_LLEN; j++)
namep[j] = romp->tcr_modname[j].v;
namep[j] = '\0';
return (1);
}
return (0);
}
void
tc_intr_establish(dev, cookie, level, handler, arg)
struct device *dev;
void *cookie, *arg;
tc_intrlevel_t level;
int (*handler) __P((void *));
{
struct tc_softc *sc = (struct tc_softc *)device_get_softc(dev);
(*sc->sc_intr_establish)(device_get_parent(dev), cookie, level,
handler, arg);
}
void
tc_intr_disestablish(dev, cookie)
struct device *dev;
void *cookie;
{
struct tc_softc *sc = (struct tc_softc *)device_get_softc(dev);
(*sc->sc_intr_disestablish)(device_get_parent(dev), cookie);
}
static void
tc_print_child(device_t bus, device_t dev)
{
printf(" at %s%d",
device_get_name(bus), device_get_unit(bus));
}
DRIVER_MODULE(tc, tcasic, tc_driver, tc_devclass, 0, 0);
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