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- /*
- * nv_tco: TCO timer driver for nVidia chipsets.
- *
- * (c) Copyright 2005 Google Inc., All Rights Reserved.
- *
- * Supported Chipsets:
- * - MCP51/MCP55
- *
- * (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>, All Rights
- * Reserved.
- * http://www.kernelconcepts.de
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Neither kernel concepts nor Nils Faerber admit liability nor provide
- * warranty for any of this software. This material is provided
- * "AS-IS" and at no charge.
- *
- * (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>
- * developed for
- * Jentro AG, Haar/Munich (Germany)
- *
- * TCO timer driver for NV chipsets
- * based on softdog.c by Alan Cox <alan@redhat.com>
- */
- /*
- * Some address definitions for the TCO
- */
- #define TCO_RLD(base) ((base) + 0x00) /* TCO Timer Reload and Current Value */
- #define TCO_TMR(base) ((base) + 0x01) /* TCO Timer Initial Value */
- #define TCO_STS(base) ((base) + 0x04) /* TCO Status Register */
- /*
- * TCO Boot Status bit: set on TCO reset, reset by software or standby
- * power-good (survives reboots), unfortunately this bit is never
- * set.
- */
- # define TCO_STS_BOOT_STS (1 << 9)
- /*
- * first and 2nd timeout status bits, these also survive a warm boot,
- * and they work, so we use them.
- */
- # define TCO_STS_TCO_INT_STS (1 << 1)
- # define TCO_STS_TCO2TO_STS (1 << 10)
- # define TCO_STS_RESET (TCO_STS_BOOT_STS | TCO_STS_TCO2TO_STS | \
- TCO_STS_TCO_INT_STS)
- #define TCO_CNT(base) ((base) + 0x08) /* TCO Control Register */
- # define TCO_CNT_TCOHALT (1 << 12)
- #define MCP51_SMBUS_SETUP_B 0xe8
- # define MCP51_SMBUS_SETUP_B_TCO_REBOOT (1 << 25)
- /*
- * The SMI_EN register is at the base io address + 0x04,
- * while TCOBASE is + 0x40.
- */
- #define MCP51_SMI_EN(base) ((base) - 0x40 + 0x04)
- # define MCP51_SMI_EN_TCO ((1 << 4) | (1 << 5))
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