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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "superiotool.h"
#define DEVICE_ID_BYTE1_REG 0x20
#define DEVICE_ID_BYTE2_REG 0x21
#define VENDOR_ID_BYTE1_REG 0x23
#define VENDOR_ID_BYTE2_REG 0x24
#define EXAR_VENDOR_ID 0xa813
static const struct superio_registers reg_table[] = {
{0x8403, "XR28V384", {
/* We assume reserved bits are read as 0. */
{NOLDN, NULL,
{0x02,0x07,0x20,0x21,0x23,0x24,0x25,0x26,0x27,EOT},
{0x00,0x00,0x03,0x84,0x13,0xa8,0x00,0x00,0x00,EOT}},
{0x0, "COM1",
{0x30,0x60,0x61,0x70,0xf0,0xf1,0xf4,0xf5,0xf6,EOT},
{0x01,0x03,0xf8,0x03,0x00,0x44,0x00,0x00,0x00,EOT}},
{0x1, "COM2",
{0x30,0x60,0x61,0x70,0xf0,0xf4,0xf5,0xf6,EOT},
{0x01,0x02,0xf8,0x04,0x00,0x00,0x00,0x00,EOT}},
{0x2, "COM3",
{0x30,0x60,0x61,0x70,0xf0,0xf4,0xf5,0xf6,EOT},
{0x01,0x03,0xe8,0x05,0x00,0x00,0x00,0x00,EOT}},
{0x3, "COM4",
{0x30,0x60,0x61,0x70,0xf0,0xf4,0xf5,0xf6,EOT},
{0x01,0x02,0xe8,0x09,0x00,0x00,0x00,0x00,EOT}},
{0x8, "WDT",
{0x30,0x60,0x61,0x70,0xf0,0xf1,EOT},
{0x01,0x04,0x42,0x00,0x02,0x0a,EOT}},
{EOT}}},
{EOT}
};
void enter_conf_mode_exar(uint16_t port)
{
OUTB(0x67, port);
OUTB(0x67, port);
}
void exit_conf_mode_exar(uint16_t port)
{
OUTB(0xaa, port);
}
void probe_idregs_exar(uint16_t port)
{
uint16_t vid, did;
probing_for("Exar", "", port);
enter_conf_mode_exar(port);
did = regval(port, DEVICE_ID_BYTE1_REG);
did |= (regval(port, DEVICE_ID_BYTE2_REG) << 8);
vid = regval(port, VENDOR_ID_BYTE1_REG);
vid |= (regval(port, VENDOR_ID_BYTE2_REG) << 8);
if (vid != EXAR_VENDOR_ID || superio_unknown(reg_table, did)) {
if (verbose)
printf(NOTFOUND "vid=0x%04x, id=0x%04x\n", vid, did);
exit_conf_mode_exar(port);
return;
}
printf("Found Exar %s (vid=0x%04x, id=0x%04x) at 0x%x\n",
get_superio_name(reg_table, did), vid, did, port);
chip_found = 1;
dump_superio("Exar", reg_table, port, did, LDN_SEL);
exit_conf_mode_exar(port);
}
void print_exar_chips(void)
{
print_vendor_chips("Exar", reg_table);
}
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