root/sys/dev/bhnd/bcma/bcma_eromreg.h
/*-
 * SPDX-License-Identifier: ISC
 *
 * Copyright (c) 2015 Landon Fuller <landon@landonf.org>
 * Copyright (c) 2010 Broadcom Corporation
 * 
 * Portions of this file were derived from the aidmp.h header
 * distributed with Broadcom's initial brcm80211 Linux driver release, as
 * contributed to the Linux staging repository.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 * 
 */

#ifndef _BCMA_BCMA_EROM_REG_H_
#define _BCMA_BCMA_EROM_REG_H_

/* Enumeration ROM device registers */
#define BCMA_EROM_TABLE_START   0x000   /**< device enumeration table offset */
#define BCMA_EROM_REMAPCONTROL  0xe00
#define BCMA_EROM_REMAPSELECT   0xe04
#define BCMA_EROM_MASTERSELECT  0xe10
#define BCMA_EROM_ITCR          0xf00
#define BCMA_EROM_ITIP          0xf04
#define BCMA_EROM_TABLE_SIZE    BCMA_EROM_REMAPCONTROL - BCMA_EROM_TABLE_START

/**
 * Extract an entry attribute by applying _MASK and _SHIFT defines.
 * 
 * @param _entry The entry containing the desired attribute
 * @param _attr The BCMA EROM attribute name (e.g. ENTRY_ISVALID), to be
 * concatenated with the `BCMA_EROM_` prefix and `_MASK`/`_SHIFT` suffixes.
 */
#define BCMA_EROM_GET_ATTR(_entry, _attr)                       \
        ((_entry & BCMA_EROM_ ## _attr ## _MASK)        \
        >> BCMA_EROM_ ## _attr ## _SHIFT)

/**
 * Test an EROM entry's validity and type.
 *
 * @param _entry The entry to test.
 * @param _type The required type
 * @retval true if the entry type matches and the BCMA_EROM_ENTRY_ISVALID flag
 * is set.
 * @retval false if the entry is not valid, or if the type does not match.
 */
#define BCMA_EROM_ENTRY_IS(_entry, _type)                                       \
        (BCMA_EROM_GET_ATTR(_entry, ENTRY_ISVALID) &&                   \
         BCMA_EROM_GET_ATTR(_entry, ENTRY_TYPE) == BCMA_EROM_ENTRY_TYPE_ ## _type)

/*
 * Enumeration ROM Constants
 */
#define BCMA_EROM_TABLE_EOF             0xF             /* end of EROM table */

#define BCMA_EROM_ENTRY_ISVALID_MASK    0x1             /* is entry valid? */
#define BCMA_EROM_ENTRY_ISVALID_SHIFT   0

/* EROM Entry Types */
#define BCMA_EROM_ENTRY_TYPE_MASK       0x6             /* entry type mask */
#define BCMA_EROM_ENTRY_TYPE_SHIFT      0
#  define BCMA_EROM_ENTRY_TYPE_CORE     0x0             /* core descriptor */
#  define BCMA_EROM_ENTRY_TYPE_MPORT    0x2             /* master port descriptor */
#  define BCMA_EROM_ENTRY_TYPE_REGION   0x4             /* address region descriptor */

/* EROM Core DescriptorA (31:0) */
#define BCMA_EROM_COREA_DESIGNER_MASK   0xFFF00000      /* core designer (JEP-106 mfg id) */
#define BCMA_EROM_COREA_DESIGNER_SHIFT  20
#define BCMA_EROM_COREA_ID_MASK         0x000FFF00      /* broadcom-assigned core id */
#define BCMA_EROM_COREA_ID_SHIFT        8
#define BCMA_EROM_COREA_CLASS_MASK      0x000000F0      /* core class */
#define BCMA_EROM_COREA_CLASS_SHIFT     4

/* EROM Core DescriptorB (63:32) */
#define BCMA_EROM_COREB_NUM_MP_MASK     0x000001F0      /* master port count */
#define BCMA_EROM_COREB_NUM_MP_SHIFT    4
#define BCMA_EROM_COREB_NUM_DP_MASK     0x00003E00      /* device/bridge port count */
#define BCMA_EROM_COREB_NUM_DP_SHIFT    9
#define BCMA_EROM_COREB_NUM_WMP_MASK    0x0007C000      /* master wrapper port count */
#define BCMA_EROM_COREB_NUM_WMP_SHIFT   14
#define BCMA_EROM_COREB_NUM_WSP_MASK    0x00F80000      /* slave wrapper port count */
#define BCMA_EROM_COREB_NUM_WSP_SHIFT   19
#define BCMA_EROM_COREB_REV_MASK        0xFF000000      /* broadcom-assigned core revision */
#define BCMA_EROM_COREB_REV_SHIFT       24

/* EROM Master Port Descriptor 
 * 
 * The attribute descriptions are derived from background information
 * on the AXI bus and PL301 interconnect, but are undocumented
 * by Broadcom and may be incorrect.
 */
#define BCMA_EROM_MPORT_NUM_MASK        0x0000FF00      /* AXI master number (unique per interconnect) */
#define BCMA_EROM_MPORT_NUM_SHIFT       8
#define BCMA_EROM_MPORT_ID_MASK         0x000000F0      /* AXI master ID (unique per master). */
#define BCMA_EROM_MPORT_ID_SHIFT        4

/* EROM Slave Port MMIO Region Descriptor */
#define BCMA_EROM_REGION_BASE_MASK      0xFFFFF000      /* region base address */
#define BCMA_EROM_REGION_BASE_SHIFT     0
#define BCMA_EROM_REGION_64BIT_MASK     0x00000008      /* base address spans two 32-bit entries */
#define BCMA_EROM_REGION_64BIT_SHIFT    0
#define BCMA_EROM_REGION_PORT_MASK      0x00000F00      /* region's associated port */
#define BCMA_EROM_REGION_PORT_SHIFT     8
#define BCMA_EROM_REGION_TYPE_MASK      0x000000C0      /* region type */
#define BCMA_EROM_REGION_TYPE_SHIFT     6
#define   BCMA_EROM_REGION_TYPE_DEVICE  0               /* region maps to a device */
#define   BCMA_EROM_REGION_TYPE_BRIDGE  1               /* region maps to a bridge (e.g. AXI2APB) */
#define   BCMA_EROM_REGION_TYPE_SWRAP   2               /* region maps to a slave port's DMP agent/wrapper */
#define   BCMA_EROM_REGION_TYPE_MWRAP   3               /* region maps to a master port's DMP agent/wrapper */

#define BCMA_EROM_REGION_SIZE_MASK      0x00000030      /* region size encoding */
#define BCMA_EROM_REGION_SIZE_SHIFT     4
#define   BCMA_EROM_REGION_SIZE_4K      0               /* 4K region */
#define   BCMA_EROM_REGION_SIZE_8K      1               /* 8K region */
#define   BCMA_EROM_REGION_SIZE_16K     2               /* 16K region */
#define   BCMA_EROM_REGION_SIZE_OTHER   3               /* defined by an additional size descriptor entry. */
#define BCMA_EROM_REGION_SIZE_BASE      0x1000

/* Region Size Descriptor */
#define BCMA_EROM_RSIZE_VAL_MASK        0xFFFFF000      /* region size */
#define BCMA_EROM_RSIZE_VAL_SHIFT       0
#define BCMA_EROM_RSIZE_64BIT_MASK      0x00000008      /* size spans two 32-bit entries */
#define BCMA_EROM_RSIZE_64BIT_SHIFT     0

#endif /* _BCMA_BCMA_EROM_REG_H_ */