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f1f1f5902b
The octeon-ethernet driver needs to check for additional chip specific features, we add them to the octeon_has_feature() framework. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
147 lines
4.6 KiB
C
147 lines
4.6 KiB
C
/***********************license start***************
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* Author: Cavium Networks
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*
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* Contact: support@caviumnetworks.com
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* This file is part of the OCTEON SDK
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*
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* Copyright (c) 2003-2008 Cavium Networks
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* or visit http://www.gnu.org/licenses/.
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*
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* This file may also be available under a different license from Cavium.
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* Contact Cavium Networks for more information
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***********************license end**************************************/
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/*
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* File defining checks for different Octeon features.
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*/
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#ifndef __OCTEON_FEATURE_H__
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#define __OCTEON_FEATURE_H__
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enum octeon_feature {
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/*
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* Octeon models in the CN5XXX family and higher support
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* atomic add instructions to memory (saa/saad).
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*/
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OCTEON_FEATURE_SAAD,
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/* Does this Octeon support the ZIP offload engine? */
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OCTEON_FEATURE_ZIP,
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/* Does this Octeon support crypto acceleration using COP2? */
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OCTEON_FEATURE_CRYPTO,
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/* Does this Octeon support PCI express? */
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OCTEON_FEATURE_PCIE,
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/* Some Octeon models support internal memory for storing
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* cryptographic keys */
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OCTEON_FEATURE_KEY_MEMORY,
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/* Octeon has a LED controller for banks of external LEDs */
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OCTEON_FEATURE_LED_CONTROLLER,
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/* Octeon has a trace buffer */
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OCTEON_FEATURE_TRA,
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/* Octeon has a management port */
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OCTEON_FEATURE_MGMT_PORT,
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/* Octeon has a raid unit */
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OCTEON_FEATURE_RAID,
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/* Octeon has a builtin USB */
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OCTEON_FEATURE_USB,
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/* Octeon IPD can run without using work queue entries */
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OCTEON_FEATURE_NO_WPTR,
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/* Octeon has DFA state machines */
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OCTEON_FEATURE_DFA,
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/* Octeon MDIO block supports clause 45 transactions for 10
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* Gig support */
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OCTEON_FEATURE_MDIO_CLAUSE_45,
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};
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static inline int cvmx_fuse_read(int fuse);
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/**
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* Determine if the current Octeon supports a specific feature. These
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* checks have been optimized to be fairly quick, but they should still
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* be kept out of fast path code.
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*
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* @feature: Feature to check for. This should always be a constant so the
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* compiler can remove the switch statement through optimization.
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*
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* Returns Non zero if the feature exists. Zero if the feature does not
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* exist.
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*/
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static inline int octeon_has_feature(enum octeon_feature feature)
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{
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switch (feature) {
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case OCTEON_FEATURE_SAAD:
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return !OCTEON_IS_MODEL(OCTEON_CN3XXX);
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case OCTEON_FEATURE_ZIP:
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if (OCTEON_IS_MODEL(OCTEON_CN30XX)
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|| OCTEON_IS_MODEL(OCTEON_CN50XX)
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|| OCTEON_IS_MODEL(OCTEON_CN52XX))
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return 0;
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else if (OCTEON_IS_MODEL(OCTEON_CN38XX_PASS1))
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return 1;
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else
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return !cvmx_fuse_read(121);
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case OCTEON_FEATURE_CRYPTO:
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return !cvmx_fuse_read(90);
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case OCTEON_FEATURE_PCIE:
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return OCTEON_IS_MODEL(OCTEON_CN56XX)
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|| OCTEON_IS_MODEL(OCTEON_CN52XX);
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case OCTEON_FEATURE_KEY_MEMORY:
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case OCTEON_FEATURE_LED_CONTROLLER:
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return OCTEON_IS_MODEL(OCTEON_CN38XX)
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|| OCTEON_IS_MODEL(OCTEON_CN58XX)
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|| OCTEON_IS_MODEL(OCTEON_CN56XX);
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case OCTEON_FEATURE_TRA:
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return !(OCTEON_IS_MODEL(OCTEON_CN30XX)
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|| OCTEON_IS_MODEL(OCTEON_CN50XX));
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case OCTEON_FEATURE_MGMT_PORT:
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return OCTEON_IS_MODEL(OCTEON_CN56XX)
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|| OCTEON_IS_MODEL(OCTEON_CN52XX);
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case OCTEON_FEATURE_RAID:
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return OCTEON_IS_MODEL(OCTEON_CN56XX)
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|| OCTEON_IS_MODEL(OCTEON_CN52XX);
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case OCTEON_FEATURE_USB:
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return !(OCTEON_IS_MODEL(OCTEON_CN38XX)
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|| OCTEON_IS_MODEL(OCTEON_CN58XX));
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case OCTEON_FEATURE_NO_WPTR:
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return (OCTEON_IS_MODEL(OCTEON_CN56XX)
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|| OCTEON_IS_MODEL(OCTEON_CN52XX))
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&& !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)
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&& !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X);
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case OCTEON_FEATURE_DFA:
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if (!OCTEON_IS_MODEL(OCTEON_CN38XX)
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&& !OCTEON_IS_MODEL(OCTEON_CN31XX)
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&& !OCTEON_IS_MODEL(OCTEON_CN58XX))
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return 0;
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else if (OCTEON_IS_MODEL(OCTEON_CN3020))
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return 0;
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else if (OCTEON_IS_MODEL(OCTEON_CN38XX_PASS1))
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return 1;
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else
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return !cvmx_fuse_read(120);
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case OCTEON_FEATURE_MDIO_CLAUSE_45:
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return !(OCTEON_IS_MODEL(OCTEON_CN3XXX)
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|| OCTEON_IS_MODEL(OCTEON_CN58XX)
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|| OCTEON_IS_MODEL(OCTEON_CN50XX));
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}
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return 0;
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}
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#endif /* __OCTEON_FEATURE_H__ */
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