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