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Merge pull request #1176 from tiseno100/master

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Early SiS 50x rework
This commit is contained in:
Miran Grča
2020-12-18 17:10:59 +01:00
committed by GitHub
parent bf4c62746a 7577dbab78
commit 5e91b451fb
9 changed files with 461 additions and 353 deletions
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643
src/chipset/sis_85c50x.c
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@@ -6,405 +6,365 @@
*
* This file is part of the 86Box distribution.
*
* Implementation of the SiS 85c501/85c503 chip.
* Implementation of the SiS 85C50x Chipset.
*
*
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
* Authors: Tiseno100,
*
* Copyright 2019 Miran Grca.
* Copyright 2020 Tiseno100.
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#define HAVE_STDARG_H
#include <86box/86box.h>
#include <86box/mem.h>
#include <86box/io.h>
#include <86box/rom.h>
#include <86box/pci.h>
#include <86box/device.h>
#include <86box/keyboard.h>
#include <86box/io.h>
#include <86box/timer.h>
#include <86box/apm.h>
#include <86box/mem.h>
#include <86box/smram.h>
#include <86box/pci.h>
#include <86box/port_92.h>
#include <86box/chipset.h>
typedef struct sis_85c501_t
#ifdef ENABLE_SIS_85C50X_LOG
int sis_85c50x_do_log = ENABLE_SIS_85C50X_LOG;
static void
sis_85c50x_log(const char *fmt, ...)
{
/* 85c501 */
uint8_t turbo_reg;
va_list ap;
/* 85c503 */
if (sis_85c50x_do_log) {
va_start(ap, fmt);
pclog_ex(fmt, ap);
va_end(ap);
}
}
#else
#define sis_85c50x_log(fmt, ...)
#endif
/* Registers */
uint8_t pci_conf[2][256];
/* 85c50x ISA */
uint8_t cur_reg,
regs[39];
typedef struct sis_85c50x_t
{
uint8_t index,
pci_conf[256], pci_conf_sb[256],
regs[256];
smram_t * smram;
port_92_t * port_92;
} sis_85c50x_t;
static void
sis_85c501_recalcmapping(sis_85c50x_t *dev)
sis_85c50x_shadow_recalc(sis_85c50x_t *dev)
{
int c, d;
uint32_t base;
uint32_t base, i, can_read, can_write;
for (c = 0; c < 1; c++) {
for (d = 0; d < 4; d++) {
base = 0xe0000 + (d << 14);
if (dev->pci_conf[0][0x54 + c] & (1 << (d + 4))) {
switch (dev->pci_conf[0][0x53] & 0x60) {
case 0x00:
mem_set_mem_state(base, 0x4000, MEM_READ_EXTANY | MEM_WRITE_INTERNAL);
break;
case 0x20:
mem_set_mem_state(base, 0x4000, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
break;
case 0x40:
mem_set_mem_state(base, 0x4000, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
break;
case 0x60:
mem_set_mem_state(base, 0x4000, MEM_READ_INTERNAL | MEM_WRITE_EXTANY);
break;
}
} else
mem_set_mem_state(base, 0x4000, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
}
can_read = (dev->pci_conf[0x53] & 0x40) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
can_write = (dev->pci_conf[0x53] & 0x20) ? MEM_WRITE_EXTANY : MEM_WRITE_INTERNAL;
if (!can_read)
can_write = MEM_WRITE_EXTANY;
mem_set_mem_state_both(0xf0000, 0x10000, can_read | can_write);
shadowbios = 1;
shadowbios_write = 1;
for (i = 0; i < 4; i++) {
base = 0xe0000 + (i << 14);
mem_set_mem_state_both(base, 0x4000, (dev->pci_conf[0x54] & (1 << (7 - i))) ? (can_read | can_write) : (MEM_READ_EXTANY | MEM_WRITE_EXTANY));
base = 0xd0000 + (i << 14);
mem_set_mem_state_both(base, 0x4000, (dev->pci_conf[0x55] & (1 << (7 - i))) ? (can_read | can_write) : (MEM_READ_EXTANY | MEM_WRITE_EXTANY));
base = 0xc0000 + (i << 14);
mem_set_mem_state_both(base, 0x4000, (dev->pci_conf[0x56] & (1 << (7 - i))) ? (can_read | can_write) : (MEM_READ_EXTANY | MEM_WRITE_EXTANY));
}
flushmmucache();
shadowbios = 1;
}
static void
sis_85c501_write(int func, int addr, uint8_t val, void *priv)
sis_85c50x_smm_recalc(sis_85c50x_t *dev)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
/* NOTE: Naming mismatch - what the datasheet calls "host address" is what we call ram_base. */
uint32_t ram_base = (dev->pci_conf[0x64] << 20) |
((dev->pci_conf[0x65] & 0x07) << 28);
if (func)
smram_disable(dev->smram);
if ((((dev->pci_conf[0x65] & 0xe0) >> 5) != 0x00) && (ram_base == 0x00000000))
return;
if ((addr >= 0x10) && (addr < 0x4f))
return;
switch ((dev->pci_conf[0x65] & 0xe0) >> 5) {
case 0x00:
if (!(dev->pci_conf[0x54] & 0xc0))
smram_enable(dev->smram, 0xe0000, 0xe0000, 0x8000, (dev->pci_conf[0x65] & 0x10), 1);
break;
case 0x01:
smram_enable(dev->smram, 0xb0000, ram_base, 0x10000, (dev->pci_conf[0x65] & 0x10), 1);
break;
case 0x02:
smram_enable(dev->smram, 0xa0000, ram_base, 0x10000, (dev->pci_conf[0x65] & 0x10), 1);
break;
case 0x04:
smram_enable(dev->smram, 0xa0000, ram_base, 0x8000, (dev->pci_conf[0x65] & 0x10), 1);
break;
case 0x06:
smram_enable(dev->smram, 0xb0000, ram_base, 0x8000, (dev->pci_conf[0x65] & 0x10), 1);
break;
}
}
static void
sis_85c50x_write(int func, int addr, uint8_t val, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
uint8_t valxor = (val ^ dev->pci_conf[addr]);
switch (addr) {
case 0x00: case 0x01: case 0x02: case 0x03:
case 0x08: case 0x09: case 0x0a: case 0x0b:
case 0x0c: case 0x0e:
return;
case 0x04: /*Command register*/
val &= 0x42;
val |= 0x04;
case 0x04: /* Command - low byte */
dev->pci_conf[addr] = (dev->pci_conf[addr] & 0xb4) | (val & 0x4b);
break;
case 0x05:
val &= 0x01;
case 0x07: /* Status - high byte */
dev->pci_conf[addr] = ((dev->pci_conf[addr] & 0xf9) & ~(val & 0xf8)) | (val & 0x06);
break;
case 0x50:
dev->pci_conf[addr] = val;
break;
case 0x51: /* Cache */
dev->pci_conf[addr] = val;
cpu_cache_ext_enabled = (val & 0x40);
cpu_update_waitstates();
break;
case 0x52:
dev->pci_conf[addr] = val;
break;
case 0x53: /* Shadow RAM */
case 0x54:
case 0x55:
case 0x56:
dev->pci_conf[addr] = val;
sis_85c50x_shadow_recalc(dev);
if (addr == 0x54)
sis_85c50x_smm_recalc(dev);
break;
case 0x57: case 0x58: case 0x59: case 0x5a:
case 0x5c: case 0x5d: case 0x5e: case 0x61:
case 0x62: case 0x63: case 0x67: case 0x68:
case 0x6a: case 0x6b: case 0x6c: case 0x6d:
case 0x6e: case 0x6f:
dev->pci_conf[addr] = val;
break;
case 0x5f:
dev->pci_conf[addr] = val & 0xfe;
break;
case 0x5b:
dev->pci_conf[addr] = val;
if (valxor & 0xc0)
port_92_set_features(dev->port_92, !!(val & 0x40), !!(val & 0x80));
break;
case 0x60: /* SMI */
if ((dev->pci_conf[0x68] & 0x01) && !(dev->pci_conf[addr] & 0x02) && (val & 0x02)) {
dev->pci_conf[0x69] |= 0x01;
smi_line = 1;
}
dev->pci_conf[addr] = val & 0x3e;
break;
case 0x64: /* SMRAM */
case 0x65:
dev->pci_conf[addr] = val;
sis_85c50x_smm_recalc(dev);
break;
case 0x66:
dev->pci_conf[addr] = (val & 0x7f);
break;
case 0x69:
dev->pci_conf[addr] &= ~(val);
break;
}
sis_85c50x_log("85C501: dev->pci_conf[%02x] = %02x\n", addr, val);
}
static uint8_t
sis_85c50x_read(int func, int addr, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
sis_85c50x_log("85C501: dev->pci_conf[%02x] (%02x)\n", addr, dev->pci_conf[addr]);
return dev->pci_conf[addr];
}
static void
sis_85c50x_sb_write(int func, int addr, uint8_t val, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
switch (addr) {
case 0x04: /* Command */
dev->pci_conf_sb[addr] = val & 0x0f;
break;
case 0x07: /* Status */
dev->pci_conf_sb[addr] &= ~(val & 0x30);
break;
case 0x40: /* BIOS Control Register */
dev->pci_conf_sb[addr] = val & 0x3f;
break;
case 0x41: case 0x42: case 0x43: case 0x44:
/* INTA/B/C/D# Remapping Control Register */
dev->pci_conf_sb[addr] = val & 0x8f;
if (val & 0x80)
pci_set_irq_routing(PCI_INTA + (addr - 0x41), PCI_IRQ_DISABLED);
else
pci_set_irq_routing(PCI_INTA + (addr - 0x41), val & 0xf);
break;
case 0x48: /* ISA Master/DMA Memory Cycle Control Register 1 */
case 0x49: /* ISA Master/DMA Memory Cycle Control Register 2 */
case 0x4a: /* ISA Master/DMA Memory Cycle Control Register 3 */
case 0x4b: /* ISA Master/DMA Memory Cycle Control Register 4 */
dev->pci_conf_sb[addr] = val;
break;
}
sis_85c50x_log("85C503: dev->pci_conf_sb[%02x] = %02x\n", addr, val);
}
static uint8_t
sis_85c50x_sb_read(int func, int addr, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
sis_85c50x_log("85C503: dev->pci_conf_sb[%02x] (%02x)\n", addr, dev->pci_conf_sb[addr]);
return dev->pci_conf_sb[addr];
}
static void
sis_85c50x_isa_write(uint16_t addr, uint8_t val, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
switch (addr) {
case 0x22:
dev->index = val;
break;
case 0x06: /*Status*/
val = 0;
break;
case 0x07:
val = 0x02;
break;
case 0x54: /*Shadow configure*/
if ((dev->pci_conf[0][0x54] & val) ^ 0xf0) {
dev->pci_conf[0][0x54] = val;
sis_85c501_recalcmapping(dev);
case 0x23:
switch (dev->index) {
case 0x80:
dev->regs[dev->index] = val & 0xe7;
break;
case 0x81:
dev->regs[dev->index] = val & 0xf4;
break;
case 0x84: case 0x88: case 0x9: case 0x8a:
case 0x8b:
dev->regs[dev->index] = val;
break;
case 0x85:
outb(0x70, val);
break;
}
break;
}
dev->pci_conf[0][addr] = val;
sis_85c50x_log("85C501-ISA: dev->regs[%02x] = %02x\n", addr, val);
}
static void
sis_85c503_write(int func, int addr, uint8_t val, void *priv)
static uint8_t
sis_85c50x_isa_read(uint16_t addr, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
uint8_t ret = 0xff;
if (func > 0)
return;
if (addr >= 0x0f && addr < 0x41)
return;
switch(addr) {
case 0x00: case 0x01: case 0x02: case 0x03:
case 0x08: case 0x09: case 0x0a: case 0x0b:
case 0x0e:
return;
case 0x04: /*Command register*/
val &= 0x08;
val |= 0x07;
break;
case 0x05:
val = 0;
switch (addr) {
case 0x22:
ret = dev->index;
break;
case 0x06: /*Status*/
val = 0;
break;
case 0x07:
val = 0x02;
break;
case 0x41:
if (val & 0x80)
pci_set_irq_routing(PCI_INTA, PCI_IRQ_DISABLED);
case 0x23:
if (dev->index == 0x85)
ret = inb(0x70);
else
pci_set_irq_routing(PCI_INTA, val & 0xf);
break;
case 0x42:
if (val & 0x80)
pci_set_irq_routing(PCI_INTC, PCI_IRQ_DISABLED);
else
pci_set_irq_routing(PCI_INTC, val & 0xf);
break;
case 0x43:
if (val & 0x80)
pci_set_irq_routing(PCI_INTB, PCI_IRQ_DISABLED);
else
pci_set_irq_routing(PCI_INTB, val & 0xf);
break;
case 0x44:
if (val & 0x80)
pci_set_irq_routing(PCI_INTD, PCI_IRQ_DISABLED);
else
pci_set_irq_routing(PCI_INTD, val & 0xf);
ret = dev->regs[dev->index];
break;
}
sis_85c50x_log("85C501-ISA: dev->regs[%02x] (%02x)\n", dev->index, ret);
dev->pci_conf[1][addr] = val;
}
static void
sis_85c50x_isa_write(uint16_t port, uint8_t val, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
if (port & 1) {
if (dev->cur_reg <= 0x1a)
dev->regs[dev->cur_reg] = val;
} else
dev->cur_reg = val;
}
static uint8_t
sis_85c501_read(int func, int addr, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
if (func)
return 0xff;
return dev->pci_conf[0][addr];
}
static uint8_t
sis_85c503_read(int func, int addr, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
if (func > 0)
return 0xff;
return dev->pci_conf[1][addr];
}
static uint8_t
sis_85c50x_isa_read(uint16_t port, void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
if (port & 1) {
if (dev->cur_reg <= 0x1a)
return dev->regs[dev->cur_reg];
else
return 0xff;
} else
return dev->cur_reg;
}
static void
sis_85c50x_isa_reset(sis_85c50x_t *dev)
{
int mem_size_mb, i = 0;
memset(dev->regs, 0, sizeof(dev->regs));
dev->cur_reg = 0;
for (i = 0; i < 0x27; i++)
dev->regs[i] = 0x00;
dev->regs[9] = 0x40;
mem_size_mb = mem_size >> 10;
switch (mem_size_mb) {
case 0: case 1:
dev->regs[9] |= 0;
break;
case 2: case 3:
dev->regs[9] |= 1;
break;
case 4:
dev->regs[9] |= 2;
break;
case 5:
dev->regs[9] |= 0x20;
break;
case 6: case 7:
dev->regs[9] |= 9;
break;
case 8: case 9:
dev->regs[9] |= 4;
break;
case 10: case 11:
dev->regs[9] |= 5;
break;
case 12: case 13: case 14: case 15:
dev->regs[9] |= 0xB;
break;
case 16:
dev->regs[9] |= 0x13;
break;
case 17:
dev->regs[9] |= 0x21;
break;
case 18: case 19:
dev->regs[9] |= 6;
break;
case 20: case 21: case 22: case 23:
dev->regs[9] |= 0xD;
break;
case 24: case 25: case 26: case 27:
case 28: case 29: case 30: case 31:
dev->regs[9] |= 0xE;
break;
case 32: case 33: case 34: case 35:
dev->regs[9] |= 0x1B;
break;
case 36: case 37: case 38: case 39:
dev->regs[9] |= 0xF;
break;
case 40: case 41: case 42: case 43:
case 44: case 45: case 46: case 47:
dev->regs[9] |= 0x17;
break;
case 48:
dev->regs[9] |= 0x1E;
break;
default:
if (mem_size_mb < 64)
dev->regs[9] |= 0x1E;
else if ((mem_size_mb >= 65) && (mem_size_mb < 68))
dev->regs[9] |= 0x22;
else
dev->regs[9] |= 0x24;
break;
}
dev->regs[0x11] = 9;
dev->regs[0x12] = 0xFF;
dev->regs[0x23] = 0xF0;
dev->regs[0x26] = 1;
io_removehandler(0x22, 0x0002,
sis_85c50x_isa_read, NULL, NULL, sis_85c50x_isa_write, NULL, NULL, dev);
io_sethandler(0x22, 0x0002,
sis_85c50x_isa_read, NULL, NULL, sis_85c50x_isa_write, NULL, NULL, dev);
return ret;
}
static void
sis_85c50x_reset(void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
uint8_t val = 0;
/* North Bridge (SiS 85C501/502) */
dev->pci_conf[0x00] = 0x39;
dev->pci_conf[0x01] = 0x10;
dev->pci_conf[0x02] = 0x06;
dev->pci_conf[0x03] = 0x04;
dev->pci_conf[0x04] = 0x04;
dev->pci_conf[0x07] = 0x04;
dev->pci_conf[0x09] = 0x00;
dev->pci_conf[0x0a] = 0x00;
dev->pci_conf[0x0b] = 0x06;
val = sis_85c501_read(0, 0x54, priv); /* Read current value of 0x44. */
sis_85c501_write(0, 0x54, val & 0xf, priv); /* Turn off shadow BIOS but keep the lower 4 bits. */
sis_85c50x_write(0, 0x51, 0x00, dev);
sis_85c50x_write(0, 0x53, 0x00, dev);
sis_85c50x_write(0, 0x54, 0x00, dev);
sis_85c50x_write(0, 0x55, 0x00, dev);
sis_85c50x_write(0, 0x56, 0x00, dev);
sis_85c50x_write(0, 0x5b, 0x00, dev);
sis_85c50x_write(0, 0x60, 0x00, dev);
sis_85c50x_write(0, 0x64, 0x00, dev);
sis_85c50x_write(0, 0x65, 0x00, dev);
sis_85c50x_write(0, 0x68, 0x00, dev);
sis_85c50x_write(0, 0x69, 0xff, dev);
sis_85c50x_isa_reset(dev);
}
static void
sis_85c50x_setup(sis_85c50x_t *dev)
{
memset(dev, 0, sizeof(sis_85c50x_t));
/* 85c501 */
dev->pci_conf[0][0x00] = 0x39; /*SiS*/
dev->pci_conf[0][0x01] = 0x10;
dev->pci_conf[0][0x02] = 0x06; /*501/502*/
dev->pci_conf[0][0x03] = 0x04;
dev->pci_conf[0][0x04] = 7;
dev->pci_conf[0][0x05] = 0;
dev->pci_conf[0][0x06] = 0x80;
dev->pci_conf[0][0x07] = 0x02;
dev->pci_conf[0][0x08] = 0; /*Device revision*/
dev->pci_conf[0][0x09] = 0x00; /*Device class (PCI bridge)*/
dev->pci_conf[0][0x0a] = 0x00;
dev->pci_conf[0][0x0b] = 0x06;
dev->pci_conf[0][0x0e] = 0x00; /*Single function device*/
dev->pci_conf[0][0x50] = 0xbc;
dev->pci_conf[0][0x51] = 0xfb;
dev->pci_conf[0][0x52] = 0xad;
dev->pci_conf[0][0x53] = 0xfe;
shadowbios = 1;
/* 85c503 */
dev->pci_conf[1][0x00] = 0x39; /*SiS*/
dev->pci_conf[1][0x01] = 0x10;
dev->pci_conf[1][0x02] = 0x08; /*503*/
dev->pci_conf[1][0x03] = 0x00;
dev->pci_conf[1][0x04] = 7;
dev->pci_conf[1][0x05] = 0;
dev->pci_conf[1][0x06] = 0x80;
dev->pci_conf[1][0x07] = 0x02;
dev->pci_conf[1][0x08] = 0; /*Device revision*/
dev->pci_conf[1][0x09] = 0x00; /*Device class (PCI bridge)*/
dev->pci_conf[1][0x0a] = 0x01;
dev->pci_conf[1][0x0b] = 0x06;
dev->pci_conf[1][0x0e] = 0x00; /*Single function device*/
dev->pci_conf[1][0x41] = dev->pci_conf[1][0x42] =
dev->pci_conf[1][0x43] = dev->pci_conf[1][0x44] = 0x80;
/* South Bridge (SiS 85C503) */
dev->pci_conf_sb[0x00] = 0x39;
dev->pci_conf_sb[0x01] = 0x10;
dev->pci_conf_sb[0x02] = 0x08;
dev->pci_conf_sb[0x03] = 0x00;
dev->pci_conf_sb[0x04] = 0x07;
dev->pci_conf_sb[0x05] = 0x00;
dev->pci_conf_sb[0x06] = 0x00;
dev->pci_conf_sb[0x07] = 0x02;
dev->pci_conf_sb[0x08] = 0x00;
dev->pci_conf_sb[0x09] = 0x00;
dev->pci_conf_sb[0x0a] = 0x01;
dev->pci_conf_sb[0x0b] = 0x06;
sis_85c50x_write(0, 0x41, 0x80, dev);
sis_85c50x_write(0, 0x42, 0x80, dev);
sis_85c50x_write(0, 0x43, 0x80, dev);
sis_85c50x_write(0, 0x44, 0x80, dev);
}
static void
sis_85c50x_close(void *priv)
{
sis_85c50x_t *dev = (sis_85c50x_t *) priv;
sis_85c50x_t *dev = (sis_85c50x_t *)priv;
smram_del(dev->smram);
free(dev);
}
@@ -412,30 +372,31 @@ sis_85c50x_close(void *priv)
static void *
sis_85c50x_init(const device_t *info)
{
sis_85c50x_t *dev = (sis_85c50x_t *) malloc(sizeof(sis_85c50x_t));
sis_85c50x_t *dev = (sis_85c50x_t *)malloc(sizeof(sis_85c50x_t));
memset(dev, 0x00, sizeof(sis_85c50x_t));
pci_add_card(0, sis_85c501_read, sis_85c501_write, dev);
pci_add_card(5, sis_85c503_read, sis_85c503_write, dev);
/* 501/502 (Northbridge) */
pci_add_card(PCI_ADD_NORTHBRIDGE, sis_85c50x_read, sis_85c50x_write, dev);
sis_85c50x_setup(dev);
sis_85c50x_isa_reset(dev);
/* 503 (Southbridge) */
pci_add_card(PCI_ADD_SOUTHBRIDGE, sis_85c50x_sb_read, sis_85c50x_sb_write, dev);
io_sethandler(0x0022, 0x0002, sis_85c50x_isa_read, NULL, NULL, sis_85c50x_isa_write, NULL, NULL, dev);
device_add(&port_92_pci_device);
dev->smram = smram_add();
dev->port_92 = device_add(&port_92_device);
sis_85c50x_reset(dev);
return dev;
}
const device_t sis_85c50x_device =
{
"SiS 85c501/85c503",
const device_t sis_85c50x_device = {
"SiS 85C50x",
DEVICE_PCI,
0,
sis_85c50x_init,
sis_85c50x_close,
sis_85c50x_reset,
{ NULL },
NULL,
NULL,
sis_85c50x_init, sis_85c50x_close,
sis_85c50x_reset, { NULL },
NULL, NULL,
NULL
};