Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 364 insertions, 0 deletions

diff --git a/arch/mips/include/asm/octeon/cvmx-l2c.h b/arch/mips/include/asm/octeon/cvmx-l2c.h
new file mode 100644
index 000000000..4459a3200
--- /dev/null
+++ b/arch/mips/include/asm/octeon/cvmx-l2c.h
@@ -0,0 +1,364 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2017 Cavium, Inc.
+ *
+ * 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**************************************/
+
+/*
+ * Interface to the Level 2 Cache (L2C) control, measurement, and debugging
+ * facilities.
+ */
+
+#ifndef __CVMX_L2C_H__
+#define __CVMX_L2C_H__
+
+#include <uapi/asm/bitfield.h>
+
+#define CVMX_L2_ASSOC	 cvmx_l2c_get_num_assoc()	/* Deprecated macro */
+#define CVMX_L2_SET_BITS cvmx_l2c_get_set_bits()	/* Deprecated macro */
+#define CVMX_L2_SETS	 cvmx_l2c_get_num_sets()	/* Deprecated macro */
+
+/* Based on 128 byte cache line size */
+#define CVMX_L2C_IDX_ADDR_SHIFT	7
+#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
+
+/* Number of L2C Tag-and-data sections (TADs) that are connected to LMC. */
+#define CVMX_L2C_TADS  1
+
+union cvmx_l2c_tag {
+	uint64_t u64;
+	struct {
+		__BITFIELD_FIELD(uint64_t reserved:28,
+		__BITFIELD_FIELD(uint64_t V:1,
+		__BITFIELD_FIELD(uint64_t D:1,
+		__BITFIELD_FIELD(uint64_t L:1,
+		__BITFIELD_FIELD(uint64_t U:1,
+		__BITFIELD_FIELD(uint64_t addr:32,
+		;))))))
+	} s;
+};
+
+/* L2C Performance Counter events. */
+enum cvmx_l2c_event {
+	CVMX_L2C_EVENT_CYCLES		=  0,
+	CVMX_L2C_EVENT_INSTRUCTION_MISS =  1,
+	CVMX_L2C_EVENT_INSTRUCTION_HIT	=  2,
+	CVMX_L2C_EVENT_DATA_MISS	=  3,
+	CVMX_L2C_EVENT_DATA_HIT		=  4,
+	CVMX_L2C_EVENT_MISS		=  5,
+	CVMX_L2C_EVENT_HIT		=  6,
+	CVMX_L2C_EVENT_VICTIM_HIT	=  7,
+	CVMX_L2C_EVENT_INDEX_CONFLICT	=  8,
+	CVMX_L2C_EVENT_TAG_PROBE	=  9,
+	CVMX_L2C_EVENT_TAG_UPDATE	= 10,
+	CVMX_L2C_EVENT_TAG_COMPLETE	= 11,
+	CVMX_L2C_EVENT_TAG_DIRTY	= 12,
+	CVMX_L2C_EVENT_DATA_STORE_NOP	= 13,
+	CVMX_L2C_EVENT_DATA_STORE_READ	= 14,
+	CVMX_L2C_EVENT_DATA_STORE_WRITE = 15,
+	CVMX_L2C_EVENT_FILL_DATA_VALID	= 16,
+	CVMX_L2C_EVENT_WRITE_REQUEST	= 17,
+	CVMX_L2C_EVENT_READ_REQUEST	= 18,
+	CVMX_L2C_EVENT_WRITE_DATA_VALID = 19,
+	CVMX_L2C_EVENT_XMC_NOP		= 20,
+	CVMX_L2C_EVENT_XMC_LDT		= 21,
+	CVMX_L2C_EVENT_XMC_LDI		= 22,
+	CVMX_L2C_EVENT_XMC_LDD		= 23,
+	CVMX_L2C_EVENT_XMC_STF		= 24,
+	CVMX_L2C_EVENT_XMC_STT		= 25,
+	CVMX_L2C_EVENT_XMC_STP		= 26,
+	CVMX_L2C_EVENT_XMC_STC		= 27,
+	CVMX_L2C_EVENT_XMC_DWB		= 28,
+	CVMX_L2C_EVENT_XMC_PL2		= 29,
+	CVMX_L2C_EVENT_XMC_PSL1		= 30,
+	CVMX_L2C_EVENT_XMC_IOBLD	= 31,
+	CVMX_L2C_EVENT_XMC_IOBST	= 32,
+	CVMX_L2C_EVENT_XMC_IOBDMA	= 33,
+	CVMX_L2C_EVENT_XMC_IOBRSP	= 34,
+	CVMX_L2C_EVENT_XMC_BUS_VALID	= 35,
+	CVMX_L2C_EVENT_XMC_MEM_DATA	= 36,
+	CVMX_L2C_EVENT_XMC_REFL_DATA	= 37,
+	CVMX_L2C_EVENT_XMC_IOBRSP_DATA	= 38,
+	CVMX_L2C_EVENT_RSC_NOP		= 39,
+	CVMX_L2C_EVENT_RSC_STDN		= 40,
+	CVMX_L2C_EVENT_RSC_FILL		= 41,
+	CVMX_L2C_EVENT_RSC_REFL		= 42,
+	CVMX_L2C_EVENT_RSC_STIN		= 43,
+	CVMX_L2C_EVENT_RSC_SCIN		= 44,
+	CVMX_L2C_EVENT_RSC_SCFL		= 45,
+	CVMX_L2C_EVENT_RSC_SCDN		= 46,
+	CVMX_L2C_EVENT_RSC_DATA_VALID	= 47,
+	CVMX_L2C_EVENT_RSC_VALID_FILL	= 48,
+	CVMX_L2C_EVENT_RSC_VALID_STRSP	= 49,
+	CVMX_L2C_EVENT_RSC_VALID_REFL	= 50,
+	CVMX_L2C_EVENT_LRF_REQ		= 51,
+	CVMX_L2C_EVENT_DT_RD_ALLOC	= 52,
+	CVMX_L2C_EVENT_DT_WR_INVAL	= 53,
+	CVMX_L2C_EVENT_MAX
+};
+
+/* L2C Performance Counter events for Octeon2. */
+enum cvmx_l2c_tad_event {
+	CVMX_L2C_TAD_EVENT_NONE		 = 0,
+	CVMX_L2C_TAD_EVENT_TAG_HIT	 = 1,
+	CVMX_L2C_TAD_EVENT_TAG_MISS	 = 2,
+	CVMX_L2C_TAD_EVENT_TAG_NOALLOC	 = 3,
+	CVMX_L2C_TAD_EVENT_TAG_VICTIM	 = 4,
+	CVMX_L2C_TAD_EVENT_SC_FAIL	 = 5,
+	CVMX_L2C_TAD_EVENT_SC_PASS	 = 6,
+	CVMX_L2C_TAD_EVENT_LFB_VALID	 = 7,
+	CVMX_L2C_TAD_EVENT_LFB_WAIT_LFB	 = 8,
+	CVMX_L2C_TAD_EVENT_LFB_WAIT_VAB	 = 9,
+	CVMX_L2C_TAD_EVENT_QUAD0_INDEX	 = 128,
+	CVMX_L2C_TAD_EVENT_QUAD0_READ	 = 129,
+	CVMX_L2C_TAD_EVENT_QUAD0_BANK	 = 130,
+	CVMX_L2C_TAD_EVENT_QUAD0_WDAT	 = 131,
+	CVMX_L2C_TAD_EVENT_QUAD1_INDEX	 = 144,
+	CVMX_L2C_TAD_EVENT_QUAD1_READ	 = 145,
+	CVMX_L2C_TAD_EVENT_QUAD1_BANK	 = 146,
+	CVMX_L2C_TAD_EVENT_QUAD1_WDAT	 = 147,
+	CVMX_L2C_TAD_EVENT_QUAD2_INDEX	 = 160,
+	CVMX_L2C_TAD_EVENT_QUAD2_READ	 = 161,
+	CVMX_L2C_TAD_EVENT_QUAD2_BANK	 = 162,
+	CVMX_L2C_TAD_EVENT_QUAD2_WDAT	 = 163,
+	CVMX_L2C_TAD_EVENT_QUAD3_INDEX	 = 176,
+	CVMX_L2C_TAD_EVENT_QUAD3_READ	 = 177,
+	CVMX_L2C_TAD_EVENT_QUAD3_BANK	 = 178,
+	CVMX_L2C_TAD_EVENT_QUAD3_WDAT	 = 179,
+	CVMX_L2C_TAD_EVENT_MAX
+};
+
+/**
+ * Configure one of the four L2 Cache performance counters to capture event
+ * occurrences.
+ *
+ * @counter:	    The counter to configure. Range 0..3.
+ * @event:	    The type of L2 Cache event occurrence to count.
+ * @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, enum cvmx_l2c_event 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.
+ *
+ * @counter:  The counter to configure. Range 0..3.
+ *
+ * Returns The current counter value.
+ */
+uint64_t cvmx_l2c_read_perf(uint32_t counter);
+
+/**
+ * Return the L2 Cache way partitioning for a given core.
+ *
+ * @core:  The core processor of interest.
+ *
+ * Returns    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
+ *
+ * @core: The core that the partitioning applies to.
+ * @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.
+ *
+ * Returns    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.
+ *
+ * @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);
+
+
+/**
+ * Locks a line in the L2 cache at the specified physical address
+ *
+ * @addr:   physical address of line to lock
+ *
+ * Returns 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.
+ *
+ * @start:  Physical address of the start of the region to lock
+ * @len:    Length (in bytes) of region to lock
+ *
+ * Returns 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.)
+ *
+ * @address: Physical address to unlock
+ *
+ * Returns 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
+ *
+ * @start:  start physical address
+ * @len:    length (in bytes) to unlock
+ *
+ * Returns 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
+ *
+ * @association:
+ *		 Which association to read line from
+ * @index:  Which way to read from.
+ *
+ * Returns l2c tag structure for line requested.
+ */
+union cvmx_l2c_tag cvmx_l2c_get_tag(uint32_t association, uint32_t index);
+
+/* Wrapper providing a deprecated old function name */
+static inline union cvmx_l2c_tag cvmx_get_l2c_tag(uint32_t association,
+						  uint32_t index)
+						  __attribute__((deprecated));
+static inline union cvmx_l2c_tag cvmx_get_l2c_tag(uint32_t association,
+						  uint32_t index)
+{
+	return cvmx_l2c_get_tag(association, index);
+}
+
+
+/**
+ * Returns the cache index for a given physical address
+ *
+ * @addr:   physical address
+ *
+ * Returns L2 cache index
+ */
+uint32_t cvmx_l2c_address_to_index(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);
+
+/**
+ *
+ * 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
+ *
+ * Returns
+ */
+int cvmx_l2c_get_num_sets(void);
+
+/**
+ * Return log base 2 of the number of sets in the L2 cache
+ * Returns
+ */
+int cvmx_l2c_get_set_bits(void);
+/**
+ * Return the number of associations in the L2 Cache
+ *
+ * Returns
+ */
+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.
+ *
+ * @assoc:  Association (or way) to flush
+ * @index:  Index to flush
+ */
+void cvmx_l2c_flush_line(uint32_t assoc, uint32_t index);
+
+#endif /* __CVMX_L2C_H__ */