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/***********************license start***************
* Copyright (c) 2003-2011 Cavium, Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Interface to the Level 2 Cache (L2C) control, measurement, and debugging
* facilities.
*
* <hr>$Revision: 70030 $<hr>
*
*/
#ifndef __CVMX_L2C_H__
#define __CVMX_L2C_H__
#define CVMX_L2C_IDX_ADDR_SHIFT 7 /* based on 128 byte cache line size */
#define CVMX_L2C_IDX_MASK (cvmx_l2c_get_num_sets() - 1)
/* Defines for index aliasing computations */
#define CVMX_L2C_TAG_ADDR_ALIAS_SHIFT (CVMX_L2C_IDX_ADDR_SHIFT + cvmx_l2c_get_set_bits())
#define CVMX_L2C_ALIAS_MASK (CVMX_L2C_IDX_MASK << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT)
#define CVMX_L2C_MEMBANK_SELECT_SIZE 4096
/* Defines for Virtualizations, valid only from Octeon II onwards. */
#define CVMX_L2C_VRT_MAX_VIRTID_ALLOWED ((OCTEON_IS_MODEL(OCTEON_CN6XXX) || OCTEON_IS_MODEL(OCTEON_CNF7XXX)) ? 64 : 0)
#define CVMX_L2C_MAX_MEMSZ_ALLOWED ((OCTEON_IS_MODEL(OCTEON_CN6XXX) || OCTEON_IS_MODEL(OCTEON_CNF7XXX)) ? 32 : 0)
/*------------*/
/* TYPEDEFS */
/*------------*/
union cvmx_l2c_tag {
uint64_t u64;
#ifdef __BIG_ENDIAN_BITFIELD
struct {
uint64_t reserved:28;
uint64_t V:1; /* Line valid */
uint64_t D:1; /* Line dirty */
uint64_t L:1; /* Line locked */
uint64_t U:1; /* Use, LRU eviction */
uint64_t addr:32; /* Phys mem (not all bits valid) */
} s;
#else
struct {
uint64_t addr:32; /* Phys mem (not all bits valid) */
uint64_t U:1; /* Use, LRU eviction */
uint64_t L:1; /* Line locked */
uint64_t D:1; /* Line dirty */
uint64_t V:1; /* Line valid */
uint64_t reserved:28;
} s;
#endif
};
typedef union cvmx_l2c_tag cvmx_l2c_tag_t;
/* Maximium number of TADs */
#define CVMX_L2C_MAX_TADS 4
/* Maximium number of L2C performance counters */
#define CVMX_L2C_MAX_PCNT 4
/* Number of L2C Tag-and-data sections (TADs) that are connected to LMC. */
#define CVMX_L2C_TADS ((OCTEON_IS_MODEL(OCTEON_CN68XX)) ? 4 : 1)
/* Number of L2C IOBs connected to LMC. */
#define CVMX_L2C_IOBS ((OCTEON_IS_MODEL(OCTEON_CN68XX)) ? 2 : 1)
/* L2C Performance Counter events. */
enum cvmx_l2c_event {
CVMX_L2C_EVENT_CYCLES = 0, /**< Cycles */
CVMX_L2C_EVENT_INSTRUCTION_MISS = 1, /**< L2 Instruction Miss */
CVMX_L2C_EVENT_INSTRUCTION_HIT = 2, /**< L2 Instruction Hit */
CVMX_L2C_EVENT_DATA_MISS = 3, /**< L2 Data Miss */
CVMX_L2C_EVENT_DATA_HIT = 4, /**< L2 Data Hit */
CVMX_L2C_EVENT_MISS = 5, /**< L2 Miss (I/D) */
CVMX_L2C_EVENT_HIT = 6, /**< L2 Hit (I/D) */
CVMX_L2C_EVENT_VICTIM_HIT = 7, /**< L2 Victim Buffer Hit (Retry Probe) */
CVMX_L2C_EVENT_INDEX_CONFLICT = 8, /**< LFB-NQ Index Conflict */
CVMX_L2C_EVENT_TAG_PROBE = 9, /**< L2 Tag Probe (issued - could be VB-Retried) */
CVMX_L2C_EVENT_TAG_UPDATE = 10, /**< L2 Tag Update (completed). Note: Some CMD types do not update */
CVMX_L2C_EVENT_TAG_COMPLETE = 11, /**< L2 Tag Probe Completed (beyond VB-RTY window) */
CVMX_L2C_EVENT_TAG_DIRTY = 12, /**< L2 Tag Dirty Victim */
CVMX_L2C_EVENT_DATA_STORE_NOP = 13, /**< L2 Data Store NOP */
CVMX_L2C_EVENT_DATA_STORE_READ = 14, /**< L2 Data Store READ */
CVMX_L2C_EVENT_DATA_STORE_WRITE = 15, /**< L2 Data Store WRITE */
CVMX_L2C_EVENT_FILL_DATA_VALID = 16, /**< Memory Fill Data valid */
CVMX_L2C_EVENT_WRITE_REQUEST = 17, /**< Memory Write Request */
CVMX_L2C_EVENT_READ_REQUEST = 18, /**< Memory Read Request */
CVMX_L2C_EVENT_WRITE_DATA_VALID = 19, /**< Memory Write Data valid */
CVMX_L2C_EVENT_XMC_NOP = 20, /**< XMC NOP */
CVMX_L2C_EVENT_XMC_LDT = 21, /**< XMC LDT */
CVMX_L2C_EVENT_XMC_LDI = 22, /**< XMC LDI */
CVMX_L2C_EVENT_XMC_LDD = 23, /**< XMC LDD */
CVMX_L2C_EVENT_XMC_STF = 24, /**< XMC STF */
CVMX_L2C_EVENT_XMC_STT = 25, /**< XMC STT */
CVMX_L2C_EVENT_XMC_STP = 26, /**< XMC STP */
CVMX_L2C_EVENT_XMC_STC = 27, /**< XMC STC */
CVMX_L2C_EVENT_XMC_DWB = 28, /**< XMC DWB */
CVMX_L2C_EVENT_XMC_PL2 = 29, /**< XMC PL2 */
CVMX_L2C_EVENT_XMC_PSL1 = 30, /**< XMC PSL1 */
CVMX_L2C_EVENT_XMC_IOBLD = 31, /**< XMC IOBLD */
CVMX_L2C_EVENT_XMC_IOBST = 32, /**< XMC IOBST */
CVMX_L2C_EVENT_XMC_IOBDMA = 33, /**< XMC IOBDMA */
CVMX_L2C_EVENT_XMC_IOBRSP = 34, /**< XMC IOBRSP */
CVMX_L2C_EVENT_XMC_BUS_VALID = 35, /**< XMC Bus valid (all) */
CVMX_L2C_EVENT_XMC_MEM_DATA = 36, /**< XMC Bus valid (DST=L2C) Memory */
CVMX_L2C_EVENT_XMC_REFL_DATA = 37, /**< XMC Bus valid (DST=IOB) REFL Data */
CVMX_L2C_EVENT_XMC_IOBRSP_DATA = 38, /**< XMC Bus valid (DST=PP) IOBRSP Data */
CVMX_L2C_EVENT_RSC_NOP = 39, /**< RSC NOP */
CVMX_L2C_EVENT_RSC_STDN = 40, /**< RSC STDN */
CVMX_L2C_EVENT_RSC_FILL = 41, /**< RSC FILL */
CVMX_L2C_EVENT_RSC_REFL = 42, /**< RSC REFL */
CVMX_L2C_EVENT_RSC_STIN = 43, /**< RSC STIN */
CVMX_L2C_EVENT_RSC_SCIN = 44, /**< RSC SCIN */
CVMX_L2C_EVENT_RSC_SCFL = 45, /**< RSC SCFL */
CVMX_L2C_EVENT_RSC_SCDN = 46, /**< RSC SCDN */
CVMX_L2C_EVENT_RSC_DATA_VALID = 47, /**< RSC Data Valid */
CVMX_L2C_EVENT_RSC_VALID_FILL = 48, /**< RSC Data Valid (FILL) */
CVMX_L2C_EVENT_RSC_VALID_STRSP = 49, /**< RSC Data Valid (STRSP) */
CVMX_L2C_EVENT_RSC_VALID_REFL = 50, /**< RSC Data Valid (REFL) */
CVMX_L2C_EVENT_LRF_REQ = 51, /**< LRF-REQ (LFB-NQ) */
CVMX_L2C_EVENT_DT_RD_ALLOC = 52, /**< DT RD-ALLOC */
CVMX_L2C_EVENT_DT_WR_INVAL = 53, /**< DT WR-INVAL */
CVMX_L2C_EVENT_MAX
};
typedef enum cvmx_l2c_event cvmx_l2c_event_t;
/* L2C Performance Counter events for Octeon2. */
enum cvmx_l2c_tad_event {
CVMX_L2C_TAD_EVENT_NONE = 0, /* None */
CVMX_L2C_TAD_EVENT_TAG_HIT = 1, /* L2 Tag Hit */
CVMX_L2C_TAD_EVENT_TAG_MISS = 2, /* L2 Tag Miss */
CVMX_L2C_TAD_EVENT_TAG_NOALLOC = 3, /* L2 Tag NoAlloc (forced no-allocate) */
CVMX_L2C_TAD_EVENT_TAG_VICTIM = 4, /* L2 Tag Victim */
CVMX_L2C_TAD_EVENT_SC_FAIL = 5, /* SC Fail */
CVMX_L2C_TAD_EVENT_SC_PASS = 6, /* SC Pass */
CVMX_L2C_TAD_EVENT_LFB_VALID = 7, /* LFB Occupancy (each cycle adds \# of LFBs valid) */
CVMX_L2C_TAD_EVENT_LFB_WAIT_LFB = 8, /* LFB Wait LFB (each cycle adds \# LFBs waiting for other LFBs) */
CVMX_L2C_TAD_EVENT_LFB_WAIT_VAB = 9, /* LFB Wait VAB (each cycle adds \# LFBs waiting for VAB) */
CVMX_L2C_TAD_EVENT_QUAD0_INDEX = 128, /* Quad 0 index bus inuse */
CVMX_L2C_TAD_EVENT_QUAD0_READ = 129, /* Quad 0 read data bus inuse */
CVMX_L2C_TAD_EVENT_QUAD0_BANK = 130, /* Quad 0 \# banks inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_QUAD0_WDAT = 131, /* Quad 0 wdat flops inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_QUAD1_INDEX = 144, /* Quad 1 index bus inuse */
CVMX_L2C_TAD_EVENT_QUAD1_READ = 145, /* Quad 1 read data bus inuse */
CVMX_L2C_TAD_EVENT_QUAD1_BANK = 146, /* Quad 1 \# banks inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_QUAD1_WDAT = 147, /* Quad 1 wdat flops inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_QUAD2_INDEX = 160, /* Quad 2 index bus inuse */
CVMX_L2C_TAD_EVENT_QUAD2_READ = 161, /* Quad 2 read data bus inuse */
CVMX_L2C_TAD_EVENT_QUAD2_BANK = 162, /* Quad 2 \# banks inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_QUAD2_WDAT = 163, /* Quad 2 wdat flops inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_QUAD3_INDEX = 176, /* Quad 3 index bus inuse */
CVMX_L2C_TAD_EVENT_QUAD3_READ = 177, /* Quad 3 read data bus inuse */
CVMX_L2C_TAD_EVENT_QUAD3_BANK = 178, /* Quad 3 \# banks inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_QUAD3_WDAT = 179, /* Quad 3 wdat flops inuse (0-4/cycle) */
CVMX_L2C_TAD_EVENT_MAX
};
typedef enum cvmx_l2c_tad_event cvmx_l2c_tad_event_t;
/**
* Configure one of the four L2 Cache performance counters to capture event
* occurences.
*
* @param counter The counter to configure. Range 0..3.
* @param event The type of L2 Cache event occurrence to count.
* @param clear_on_read When asserted, any read of the performance counter
* clears the counter.
*
* @note The routine does not clear the counter.
*/
void cvmx_l2c_config_perf(uint32_t counter, cvmx_l2c_event_t event, uint32_t clear_on_read);
/**
* Read the given L2 Cache performance counter. The counter must be configured
* before reading, but this routine does not enforce this requirement.
*
* @param counter The counter to configure. Range 0..3.
*
* @return The current counter value.
*/
uint64_t cvmx_l2c_read_perf(uint32_t counter);
/**
* Return the L2 Cache way partitioning for a given core.
*
* @param core The core processor of interest.
*
* @return The mask specifying the partitioning. 0 bits in mask indicates
* the cache 'ways' that a core can evict from.
* -1 on error
*/
int cvmx_l2c_get_core_way_partition(uint32_t core);
/**
* Partitions the L2 cache for a core
*
* @param core The core that the partitioning applies to.
* @param mask The partitioning of the ways expressed as a binary
* mask. A 0 bit allows the core to evict cache lines from
* a way, while a 1 bit blocks the core from evicting any
* lines from that way. There must be at least one allowed
* way (0 bit) in the mask.
*
* @note If any ways are blocked for all cores and the HW blocks, then
* those ways will never have any cache lines evicted from them.
* All cores and the hardware blocks are free to read from all
* ways regardless of the partitioning.
*/
int cvmx_l2c_set_core_way_partition(uint32_t core, uint32_t mask);
/**
* Return the L2 Cache way partitioning for the hw blocks.
*
* @return The mask specifying the reserved way. 0 bits in mask indicates
* the cache 'ways' that a core can evict from.
* -1 on error
*/
int cvmx_l2c_get_hw_way_partition(void);
/**
* Partitions the L2 cache for the hardware blocks.
*
* @param mask The partitioning of the ways expressed as a binary
* mask. A 0 bit allows the core to evict cache lines from
* a way, while a 1 bit blocks the core from evicting any
* lines from that way. There must be at least one allowed
* way (0 bit) in the mask.
*
* @note If any ways are blocked for all cores and the HW blocks, then
* those ways will never have any cache lines evicted from them.
* All cores and the hardware blocks are free to read from all
* ways regardless of the partitioning.
*/
int cvmx_l2c_set_hw_way_partition(uint32_t mask);
/**
* Return the L2 Cache way partitioning for the second set of hw blocks.
*
* @return The mask specifying the reserved way. 0 bits in mask indicates
* the cache 'ways' that a core can evict from.
* -1 on error
*/
int cvmx_l2c_get_hw_way_partition2(void);
/**
* Partitions the L2 cache for the second set of blocks.
*
* @param mask The partitioning of the ways expressed as a binary
* mask. A 0 bit allows the core to evict cache lines from
* a way, while a 1 bit blocks the core from evicting any
* lines from that way. There must be at least one allowed
* way (0 bit) in the mask.
*
* @note If any ways are blocked for all cores and the HW blocks, then
* those ways will never have any cache lines evicted from them.
* All cores and the hardware blocks are free to read from all
* ways regardless of the partitioning.
*/
int cvmx_l2c_set_hw_way_partition2(uint32_t mask);
/**
* Locks a line in the L2 cache at the specified physical address
*
* @param addr physical address of line to lock
*
* @return 0 on success,
* 1 if line not locked.
*/
int cvmx_l2c_lock_line(uint64_t addr);
/**
* Locks a specified memory region in the L2 cache.
*
* Note that if not all lines can be locked, that means that all
* but one of the ways (associations) available to the locking
* core are locked. Having only 1 association available for
* normal caching may have a significant adverse affect on performance.
* Care should be taken to ensure that enough of the L2 cache is left
* unlocked to allow for normal caching of DRAM.
*
* @param start Physical address of the start of the region to lock
* @param len Length (in bytes) of region to lock
*
* @return Number of requested lines that where not locked.
* 0 on success (all locked)
*/
int cvmx_l2c_lock_mem_region(uint64_t start, uint64_t len);
/**
* Unlock and flush a cache line from the L2 cache.
* IMPORTANT: Must only be run by one core at a time due to use
* of L2C debug features.
* Note that this function will flush a matching but unlocked cache line.
* (If address is not in L2, no lines are flushed.)
*
* @param address Physical address to unlock
*
* @return 0: line not unlocked
* 1: line unlocked
*/
int cvmx_l2c_unlock_line(uint64_t address);
/**
* Unlocks a region of memory that is locked in the L2 cache
*
* @param start start physical address
* @param len length (in bytes) to unlock
*
* @return Number of locked lines that the call unlocked
*/
int cvmx_l2c_unlock_mem_region(uint64_t start, uint64_t len);
/**
* Read the L2 controller tag for a given location in L2
*
* @param association
* Which association to read line from
* @param index Which way to read from.
*
* @return l2c tag structure for line requested.
*
* NOTE: This function is deprecated and cannot be used on devices with
* multiple L2C interfaces such as the OCTEON CN68XX.
* Please use cvmx_l2c_get_tag_v2 instead.
*/
cvmx_l2c_tag_t cvmx_l2c_get_tag(uint32_t association, uint32_t index)
__attribute__ ((deprecated));
/**
* Read the L2 controller tag for a given location in L2
*
* @param association
* Which association to read line from
* @param index Which way to read from.
*
* @param tad Which TAD to read from, set to 0 except on OCTEON CN68XX.
*
* @return l2c tag structure for line requested.
*/
cvmx_l2c_tag_t cvmx_l2c_get_tag_v2(uint32_t association, uint32_t index, uint32_t tad);
/**
* Find the TAD for the specified address
*
* @param addr physical address to get TAD for
*
* @return TAD number for address.
*/
int cvmx_l2c_address_to_tad(uint64_t addr);
/**
* Returns the cache index for a given physical address
*
* @param addr physical address
*
* @return L2 cache index
*/
uint32_t cvmx_l2c_address_to_index (uint64_t addr);
/**
* Returns the L2 tag that will be used for the given physical address
*
* @param addr physical address
* @return L2 cache tag. Addreses in the LMC hole are not valid.
* Returns 0xFFFFFFFF if the address specified is in the LMC hole.
*/
uint32_t cvmx_l2c_v2_address_to_tag(uint64_t addr);
/**
* Flushes (and unlocks) the entire L2 cache.
* IMPORTANT: Must only be run by one core at a time due to use
* of L2C debug features.
*/
void cvmx_l2c_flush(void);
/**
*
* @return Returns the size of the L2 cache in bytes,
* -1 on error (unrecognized model)
*/
int cvmx_l2c_get_cache_size_bytes(void);
/**
* Return the number of sets in the L2 Cache
*
* @return
*/
int cvmx_l2c_get_num_sets(void);
/**
* Return log base 2 of the number of sets in the L2 cache
* @return
*/
int cvmx_l2c_get_set_bits(void);
/**
* Return the number of associations in the L2 Cache
*
* @return
*/
int cvmx_l2c_get_num_assoc(void);
/**
* Flush a line from the L2 cache
* This should only be called from one core at a time, as this routine
* sets the core to the 'debug' core in order to flush the line.
*
* @param assoc Association (or way) to flush
* @param index Index to flush
*/
void cvmx_l2c_flush_line(uint32_t assoc, uint32_t index);
/**
* Initialize the BIG address in L2C+DRAM to generate proper error
* on reading/writing to an non-existant memory location.
*
* @param mem_size Amount of DRAM configured in MB.
* @param mode Allow/Disallow reporting errors L2C_INT_SUM[BIGRD,BIGWR].
*/
void cvmx_l2c_set_big_size(uint64_t mem_size, int mode);
#if !defined(CVMX_BUILD_FOR_LINUX_HOST) && !defined(CVMX_BUILD_FOR_LINUX_KERNEL)
/*
* Set maxium number of Virtual IDS allowed in a machine.
*
* @param nvid Number of virtial ids allowed in a machine.
* @return Return 0 on success or -1 on failure.
*/
int cvmx_l2c_vrt_set_max_virtids(int nvid);
/**
* Get maxium number of virtual IDs allowed in a machine.
*
* @return Return number of virtual machine IDs. Return -1 on failure.
*/
int cvmx_l2c_vrt_get_max_virtids(void);
/**
* Set the maxium size of memory space to be allocated for virtualization.
*
* @param memsz Size of the virtual memory in GB
* @return Return 0 on success or -1 on failure.
*/
int cvmx_l2c_vrt_set_max_memsz(int memsz);
/**
* Set a Virtual ID to a set of cores.
*
* @param virtid Assign virtid to a set of cores.
* @param coremask The group of cores to assign a unique virtual id.
* @return Return 0 on success, otherwise -1.
*/
int cvmx_l2c_vrt_assign_virtid(int virtid, uint32_t coremask);
/**
* Remove a virt id assigned to a set of cores. Update the virtid mask and
* virtid stored for each core.
*
* @param coremask the group of cores whose virtual id is removed.
*/
void cvmx_l2c_vrt_remove_virtid(int virtid);
/**
* Block a memory region to be updated by a set of virtids.
*
* @param start_addr Starting address of memory region
* @param size Size of the memory to protect
* @param virtid_mask Virtual ID to use
* @param mode Allow/Disallow write access
* = 0, Allow write access by virtid
* = 1, Disallow write access by virtid
*/
int cvmx_l2c_vrt_memprotect(uint64_t start_addr, int size, int virtid, int mode);
/**
* Enable virtualization.
*/
void cvmx_l2c_vrt_enable(int mode);
/**
* Disable virtualization.
*/
void cvmx_l2c_vrt_disable(void);
#endif /* CVMX_BUILD_FOR_LINUX_HOST */
#endif /* __CVMX_L2C_H__ */
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