/***********************license start***************
 * Author: Cavium Networks
 *
 * Contact: support@caviumnetworks.com
 * This file is part of the OCTEON SDK
 *
 * Copyright (c) 2003-2008 Cavium Networks
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, Version 2, as
 * published by the Free Software Foundation.
 *
 * This file is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this file; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 * or visit http://www.gnu.org/licenses/.
 *
 * This file may also be available under a different license from Cavium.
 * Contact Cavium Networks for more information
 ***********************license end**************************************/

/*
 *
 * File defining different Octeon model IDs and macros to
 * compare them.
 *
 */

#ifndef __OCTEON_MODEL_H__
#define __OCTEON_MODEL_H__

/* NOTE: These must match what is checked in common-config.mk */
/* Defines to represent the different versions of Octeon.  */

/*
 * IMPORTANT: When the default pass is updated for an Octeon Model,
 * the corresponding change must also be made in the oct-sim script.
 */

/*
 * The defines below should be used with the OCTEON_IS_MODEL() macro
 * to determine what model of chip the software is running on.  Models
 * ending in 'XX' match multiple models (families), while specific
 * models match only that model.  If a pass (revision) is specified,
 * then only that revision will be matched.  Care should be taken when
 * checking for both specific models and families that the specific
 * models are checked for first.  While these defines are similar to
 * the processor ID, they are not intended to be used by anything
 * other that the OCTEON_IS_MODEL framework, and the values are
 * subject to change at anytime without notice.
 *
 * NOTE: only the OCTEON_IS_MODEL() macro/function and the OCTEON_CN*
 * macros should be used outside of this file.  All other macros are
 * for internal use only, and may change without notice.
 */

/* Flag bits in top byte */
/* Ignores revision in model checks */
#define OM_IGNORE_REVISION        0x01000000
/* Check submodels */
#define OM_CHECK_SUBMODEL         0x02000000
/* Match all models previous than the one specified */
#define OM_MATCH_PREVIOUS_MODELS  0x04000000
/* Ignores the minor revison on newer parts */
#define OM_IGNORE_MINOR_REVISION  0x08000000
#define OM_FLAG_MASK              0xff000000

/*
 * CN5XXX models with new revision encoding
 */
#define OCTEON_CN58XX_PASS1_0   0x000d0300
#define OCTEON_CN58XX_PASS1_1   0x000d0301
#define OCTEON_CN58XX_PASS1_2   0x000d0303
#define OCTEON_CN58XX_PASS2_0   0x000d0308
#define OCTEON_CN58XX_PASS2_1   0x000d0309
#define OCTEON_CN58XX_PASS2_2   0x000d030a
#define OCTEON_CN58XX_PASS2_3   0x000d030b

#define OCTEON_CN58XX           (OCTEON_CN58XX_PASS1_0 | OM_IGNORE_REVISION)
#define OCTEON_CN58XX_PASS1_X   (OCTEON_CN58XX_PASS1_0 \
				 | OM_IGNORE_MINOR_REVISION)
#define OCTEON_CN58XX_PASS2_X   (OCTEON_CN58XX_PASS2_0 \
				 | OM_IGNORE_MINOR_REVISION)
#define OCTEON_CN58XX_PASS1     OCTEON_CN58XX_PASS1_X
#define OCTEON_CN58XX_PASS2     OCTEON_CN58XX_PASS2_X

#define OCTEON_CN56XX_PASS1_0   0x000d0400
#define OCTEON_CN56XX_PASS1_1   0x000d0401
#define OCTEON_CN56XX_PASS2_0   0x000d0408
#define OCTEON_CN56XX_PASS2_1   0x000d0409

#define OCTEON_CN56XX           (OCTEON_CN56XX_PASS2_0 | OM_IGNORE_REVISION)
#define OCTEON_CN56XX_PASS1_X   (OCTEON_CN56XX_PASS1_0 \
				 | OM_IGNORE_MINOR_REVISION)
#define OCTEON_CN56XX_PASS2_X   (OCTEON_CN56XX_PASS2_0 \
				 | OM_IGNORE_MINOR_REVISION)
#define OCTEON_CN56XX_PASS1     OCTEON_CN56XX_PASS1_X
#define OCTEON_CN56XX_PASS2     OCTEON_CN56XX_PASS2_X

#define OCTEON_CN57XX           OCTEON_CN56XX
#define OCTEON_CN57XX_PASS1     OCTEON_CN56XX_PASS1
#define OCTEON_CN57XX_PASS2     OCTEON_CN56XX_PASS2

#define OCTEON_CN55XX           OCTEON_CN56XX
#define OCTEON_CN55XX_PASS1     OCTEON_CN56XX_PASS1
#define OCTEON_CN55XX_PASS2     OCTEON_CN56XX_PASS2

#define OCTEON_CN54XX           OCTEON_CN56XX
#define OCTEON_CN54XX_PASS1     OCTEON_CN56XX_PASS1
#define OCTEON_CN54XX_PASS2     OCTEON_CN56XX_PASS2

#define OCTEON_CN50XX_PASS1_0   0x000d0600

#define OCTEON_CN50XX           (OCTEON_CN50XX_PASS1_0 | OM_IGNORE_REVISION)
#define OCTEON_CN50XX_PASS1_X   (OCTEON_CN50XX_PASS1_0 \
				 | OM_IGNORE_MINOR_REVISION)
#define OCTEON_CN50XX_PASS1     OCTEON_CN50XX_PASS1_X

/*
 * NOTE: Octeon CN5000F model is not identifiable using the
 * OCTEON_IS_MODEL() functions, but are treated as CN50XX.
 */

#define OCTEON_CN52XX_PASS1_0   0x000d0700
#define OCTEON_CN52XX_PASS2_0   0x000d0708

#define OCTEON_CN52XX           (OCTEON_CN52XX_PASS2_0 | OM_IGNORE_REVISION)
#define OCTEON_CN52XX_PASS1_X   (OCTEON_CN52XX_PASS1_0 \
				 | OM_IGNORE_MINOR_REVISION)
#define OCTEON_CN52XX_PASS2_X   (OCTEON_CN52XX_PASS2_0 \
				 | OM_IGNORE_MINOR_REVISION)
#define OCTEON_CN52XX_PASS1     OCTEON_CN52XX_PASS1_X
#define OCTEON_CN52XX_PASS2     OCTEON_CN52XX_PASS2_X

/*
 * CN3XXX models with old revision enconding
 */
#define OCTEON_CN38XX_PASS1     0x000d0000
#define OCTEON_CN38XX_PASS2     0x000d0001
#define OCTEON_CN38XX_PASS3     0x000d0003
#define OCTEON_CN38XX           (OCTEON_CN38XX_PASS3 | OM_IGNORE_REVISION)

#define OCTEON_CN36XX           OCTEON_CN38XX
#define OCTEON_CN36XX_PASS2     OCTEON_CN38XX_PASS2
#define OCTEON_CN36XX_PASS3     OCTEON_CN38XX_PASS3

/* The OCTEON_CN31XX matches CN31XX models and the CN3020 */
#define OCTEON_CN31XX_PASS1     0x000d0100
#define OCTEON_CN31XX_PASS1_1   0x000d0102
#define OCTEON_CN31XX           (OCTEON_CN31XX_PASS1 | OM_IGNORE_REVISION)

/*
 * This model is only used for internal checks, it is not a valid
 * model for the OCTEON_MODEL environment variable.  This matches the
 * CN3010 and CN3005 but NOT the CN3020.
 */
#define OCTEON_CN30XX_PASS1     0x000d0200
#define OCTEON_CN30XX_PASS1_1   0x000d0202
#define OCTEON_CN30XX           (OCTEON_CN30XX_PASS1 | OM_IGNORE_REVISION)

#define OCTEON_CN3005_PASS1     (0x000d0210 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3005_PASS1_0   (0x000d0210 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3005_PASS1_1   (0x000d0212 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3005           (OCTEON_CN3005_PASS1 | OM_IGNORE_REVISION \
				 | OM_CHECK_SUBMODEL)

#define OCTEON_CN3010_PASS1     (0x000d0200 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3010_PASS1_0   (0x000d0200 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3010_PASS1_1   (0x000d0202 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3010           (OCTEON_CN3010_PASS1 | OM_IGNORE_REVISION \
				 | OM_CHECK_SUBMODEL)

#define OCTEON_CN3020_PASS1     (0x000d0110 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3020_PASS1_0   (0x000d0110 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3020_PASS1_1   (0x000d0112 | OM_CHECK_SUBMODEL)
#define OCTEON_CN3020           (OCTEON_CN3020_PASS1 | OM_IGNORE_REVISION \
				 | OM_CHECK_SUBMODEL)


/* This matches the complete family of CN3xxx CPUs, and not subsequent models */
#define OCTEON_CN3XXX           (OCTEON_CN58XX_PASS1_0 \
				 | OM_MATCH_PREVIOUS_MODELS \
				 | OM_IGNORE_REVISION)

/* The revision byte (low byte) has two different encodings.
 * CN3XXX:
 *
 *     bits
 *     <7:5>: reserved (0)
 *     <4>:   alternate package
 *     <3:0>: revision
 *
 * CN5XXX:
 *
 *     bits
 *     <7>:   reserved (0)
 *     <6>:   alternate package
 *     <5:3>: major revision
 *     <2:0>: minor revision
 *
 */

/* Masks used for the various types of model/family/revision matching */
#define OCTEON_38XX_FAMILY_MASK      0x00ffff00
#define OCTEON_38XX_FAMILY_REV_MASK  0x00ffff0f
#define OCTEON_38XX_MODEL_MASK       0x00ffff10
#define OCTEON_38XX_MODEL_REV_MASK   (OCTEON_38XX_FAMILY_REV_MASK \
				      | OCTEON_38XX_MODEL_MASK)

/* CN5XXX and later use different layout of bits in the revision ID field */
#define OCTEON_58XX_FAMILY_MASK      OCTEON_38XX_FAMILY_MASK
#define OCTEON_58XX_FAMILY_REV_MASK  0x00ffff3f
#define OCTEON_58XX_MODEL_MASK       0x00ffffc0
#define OCTEON_58XX_MODEL_REV_MASK   (OCTEON_58XX_FAMILY_REV_MASK \
				      | OCTEON_58XX_MODEL_MASK)
#define OCTEON_58XX_MODEL_MINOR_REV_MASK (OCTEON_58XX_MODEL_REV_MASK \
					  & 0x00fffff8)

#define __OCTEON_MATCH_MASK__(x, y, z) (((x) & (z)) == ((y) & (z)))

/* NOTE: This is for internal (to this file) use only. */
static inline int __OCTEON_IS_MODEL_COMPILE__(uint32_t arg_model,
					      uint32_t chip_model)
{
	uint32_t rev_and_sub = OM_IGNORE_REVISION | OM_CHECK_SUBMODEL;

	if ((arg_model & OCTEON_38XX_FAMILY_MASK) < OCTEON_CN58XX_PASS1_0) {
		if (((arg_model & OM_FLAG_MASK) == rev_and_sub) &&
		    __OCTEON_MATCH_MASK__(chip_model, arg_model,
					  OCTEON_38XX_MODEL_MASK))
			return 1;
		if (((arg_model & OM_FLAG_MASK) == 0) &&
		    __OCTEON_MATCH_MASK__(chip_model, arg_model,
					  OCTEON_38XX_FAMILY_REV_MASK))
			return 1;
		if (((arg_model & OM_FLAG_MASK) == OM_IGNORE_REVISION) &&
		    __OCTEON_MATCH_MASK__(chip_model, arg_model,
					  OCTEON_38XX_FAMILY_MASK))
			return 1;
		if (((arg_model & OM_FLAG_MASK) == OM_CHECK_SUBMODEL) &&
		    __OCTEON_MATCH_MASK__((chip_model), (arg_model),
					  OCTEON_38XX_MODEL_REV_MASK))
			return 1;
		if ((arg_model & OM_MATCH_PREVIOUS_MODELS) &&
		    ((chip_model & OCTEON_38XX_MODEL_MASK) <
			    (arg_model & OCTEON_38XX_MODEL_MASK)))
			return 1;
	} else {
		if (((arg_model & OM_FLAG_MASK) == rev_and_sub) &&
		    __OCTEON_MATCH_MASK__((chip_model), (arg_model),
					  OCTEON_58XX_MODEL_MASK))
			return 1;
		if (((arg_model & OM_FLAG_MASK) == 0) &&
		    __OCTEON_MATCH_MASK__((chip_model), (arg_model),
					  OCTEON_58XX_FAMILY_REV_MASK))
			return 1;
		if (((arg_model & OM_FLAG_MASK) == OM_IGNORE_MINOR_REVISION) &&
		    __OCTEON_MATCH_MASK__((chip_model), (arg_model),
					  OCTEON_58XX_MODEL_MINOR_REV_MASK))
			return 1;
		if (((arg_model & OM_FLAG_MASK) == OM_IGNORE_REVISION) &&
		    __OCTEON_MATCH_MASK__((chip_model), (arg_model),
					  OCTEON_58XX_FAMILY_MASK))
			return 1;
		if (((arg_model & OM_FLAG_MASK) == OM_CHECK_SUBMODEL) &&
		    __OCTEON_MATCH_MASK__((chip_model), (arg_model),
					  OCTEON_58XX_MODEL_REV_MASK))
			return 1;
		if ((arg_model & OM_MATCH_PREVIOUS_MODELS) &&
		    ((chip_model & OCTEON_58XX_MODEL_MASK) <
			    (arg_model & OCTEON_58XX_MODEL_MASK)))
			return 1;
	}
	return 0;
}

/* forward declarations */
static inline uint32_t cvmx_get_proc_id(void) __attribute__ ((pure));
static inline uint64_t cvmx_read_csr(uint64_t csr_addr);

/* NOTE: This for internal use only!!!!! */
static inline int __octeon_is_model_runtime__(uint32_t model)
{
	uint32_t cpuid = cvmx_get_proc_id();

	/*
	 * Check for special case of mismarked 3005 samples. We only
	 * need to check if the sub model isn't being ignored.
	 */
	if ((model & OM_CHECK_SUBMODEL) == OM_CHECK_SUBMODEL) {
		if (cpuid == OCTEON_CN3010_PASS1 \
		    && (cvmx_read_csr(0x80011800800007B8ull) & (1ull << 34)))
			cpuid |= 0x10;
	}
	return __OCTEON_IS_MODEL_COMPILE__(model, cpuid);
}

/*
 * The OCTEON_IS_MODEL macro should be used for all Octeon model
 * checking done in a program.  This should be kept runtime if at all
 * possible.  Any compile time (#if OCTEON_IS_MODEL) usage must be
 * condtionalized with OCTEON_IS_COMMON_BINARY() if runtime checking
 * support is required.
 */
#define OCTEON_IS_MODEL(x) __octeon_is_model_runtime__(x)
#define OCTEON_IS_COMMON_BINARY() 1
#undef OCTEON_MODEL

const char *octeon_model_get_string(uint32_t chip_id);
const char *octeon_model_get_string_buffer(uint32_t chip_id, char *buffer);

#include "octeon-feature.h"

#endif /* __OCTEON_MODEL_H__ */