The CN63XX has a different L2 cache architecture. Update the helper
functions to reflect this.
Some joining of split lines was also done to improve readability, as
well as reformatting of comments.
Signed-off-by: David Daney <ddaney@xxxxxxxxxxxxxxxxxx>
---
arch/mips/cavium-octeon/executive/cvmx-l2c.c | 811 ++++++++++++++++----------
arch/mips/include/asm/octeon/cvmx-asm.h | 11 +
arch/mips/include/asm/octeon/cvmx-l2c.h | 225 ++++---
3 files changed, 630 insertions(+), 417 deletions(-)
diff --git a/arch/mips/cavium-octeon/executive/cvmx-l2c.c b/arch/mips/cavium-octeon/executive/cvmx-l2c.c
index 6abe56f..fc7112d 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-l2c.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-l2c.c
@@ -4,7 +4,7 @@
* Contact: support@xxxxxxxxxxxxxxxxxx
* This file is part of the OCTEON SDK
*
- * Copyright (c) 2003-2008 Cavium Networks
+ * Copyright (c) 2003-2010 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
@@ -26,8 +26,8 @@
***********************license end**************************************/
/*
- * Implementation of the Level 2 Cache (L2C) control, measurement, and
- * debugging facilities.
+ * Implementation of the Level 2 Cache (L2C) control,
+ * measurement, and debugging facilities.
*/
#include <asm/octeon/cvmx.h>
@@ -42,13 +42,7 @@
* if multiple applications or operating systems are running, then it
* is up to the user program to coordinate between them.
*/
-static cvmx_spinlock_t cvmx_l2c_spinlock;
-
-static inline int l2_size_half(void)
-{
- uint64_t val = cvmx_read_csr(CVMX_L2D_FUS3);
- return !!(val & (1ull << 34));
-}
+cvmx_spinlock_t cvmx_l2c_spinlock;
int cvmx_l2c_get_core_way_partition(uint32_t core)
{
@@ -58,6 +52,9 @@ int cvmx_l2c_get_core_way_partition(uint32_t core)
if (core >= cvmx_octeon_num_cores())
return -1;
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+ return cvmx_read_csr(CVMX_L2C_WPAR_PPX(core)) & 0xffff;
+
/*
* Use the lower two bits of the coreNumber to determine the
* bit offset of the UMSK[] field in the L2C_SPAR register.
@@ -71,17 +68,13 @@ int cvmx_l2c_get_core_way_partition(uint32_t core)
switch (core & 0xC) {
case 0x0:
- return (cvmx_read_csr(CVMX_L2C_SPAR0) & (0xFF << field)) >>
- field;
+ return (cvmx_read_csr(CVMX_L2C_SPAR0) & (0xFF << field)) >> field;
case 0x4:
- return (cvmx_read_csr(CVMX_L2C_SPAR1) & (0xFF << field)) >>
- field;
+ return (cvmx_read_csr(CVMX_L2C_SPAR1) & (0xFF << field)) >> field;
case 0x8:
- return (cvmx_read_csr(CVMX_L2C_SPAR2) & (0xFF << field)) >>
- field;
+ return (cvmx_read_csr(CVMX_L2C_SPAR2) & (0xFF << field)) >> field;
case 0xC:
- return (cvmx_read_csr(CVMX_L2C_SPAR3) & (0xFF << field)) >>
- field;
+ return (cvmx_read_csr(CVMX_L2C_SPAR3) & (0xFF << field)) >> field;
}
return 0;
}
@@ -95,48 +88,50 @@ int cvmx_l2c_set_core_way_partition(uint32_t core, uint32_t mask)
mask &= valid_mask;
- /* A UMSK setting which blocks all L2C Ways is an error. */
- if (mask == valid_mask)
+ /* A UMSK setting which blocks all L2C Ways is an error on some chips */
+ if (mask == valid_mask && !OCTEON_IS_MODEL(OCTEON_CN63XX))
return -1;
/* Validate the core number */
if (core >= cvmx_octeon_num_cores())
return -1;
- /* Check to make sure current mask & new mask don't block all ways */
- if (((mask | cvmx_l2c_get_core_way_partition(core)) & valid_mask) ==
- valid_mask)
- return -1;
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ cvmx_write_csr(CVMX_L2C_WPAR_PPX(core), mask);
+ return 0;
+ }
- /* Use the lower two bits of core to determine the bit offset of the
+ /*
+ * Use the lower two bits of core to determine the bit offset of the
* UMSK[] field in the L2C_SPAR register.
*/
field = (core & 0x3) * 8;
- /* Assign the new mask setting to the UMSK[] field in the appropriate
+ /*
+ * Assign the new mask setting to the UMSK[] field in the appropriate
* L2C_SPAR register based on the core_num.
*
*/
switch (core & 0xC) {
case 0x0:
cvmx_write_csr(CVMX_L2C_SPAR0,
- (cvmx_read_csr(CVMX_L2C_SPAR0) &
- ~(0xFF << field)) | mask << field);
+ (cvmx_read_csr(CVMX_L2C_SPAR0) & ~(0xFF << field)) |
+ mask << field);
break;
case 0x4:
cvmx_write_csr(CVMX_L2C_SPAR1,
- (cvmx_read_csr(CVMX_L2C_SPAR1) &
- ~(0xFF << field)) | mask << field);
+ (cvmx_read_csr(CVMX_L2C_SPAR1) & ~(0xFF << field)) |
+ mask << field);
break;
case 0x8:
cvmx_write_csr(CVMX_L2C_SPAR2,
- (cvmx_read_csr(CVMX_L2C_SPAR2) &
- ~(0xFF << field)) | mask << field);
+ (cvmx_read_csr(CVMX_L2C_SPAR2) & ~(0xFF << field)) |
+ mask << field);
break;
case 0xC:
cvmx_write_csr(CVMX_L2C_SPAR3,
- (cvmx_read_csr(CVMX_L2C_SPAR3) &
- ~(0xFF << field)) | mask << field);
+ (cvmx_read_csr(CVMX_L2C_SPAR3) & ~(0xFF << field)) |
+ mask << field);
break;
}
return 0;
@@ -146,84 +141,137 @@ int cvmx_l2c_set_hw_way_partition(uint32_t mask)
{
uint32_t valid_mask;
- valid_mask = 0xff;
-
- if (OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN38XX)) {
- if (l2_size_half())
- valid_mask = 0xf;
- } else if (l2_size_half())
- valid_mask = 0x3;
-
+ valid_mask = (0x1 << cvmx_l2c_get_num_assoc()) - 1;
mask &= valid_mask;
- /* A UMSK setting which blocks all L2C Ways is an error. */
- if (mask == valid_mask)
- return -1;
- /* Check to make sure current mask & new mask don't block all ways */
- if (((mask | cvmx_l2c_get_hw_way_partition()) & valid_mask) ==
- valid_mask)
+ /* A UMSK setting which blocks all L2C Ways is an error on some chips */
+ if (mask == valid_mask && !OCTEON_IS_MODEL(OCTEON_CN63XX))
return -1;
- cvmx_write_csr(CVMX_L2C_SPAR4,
- (cvmx_read_csr(CVMX_L2C_SPAR4) & ~0xFF) | mask);
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+ cvmx_write_csr(CVMX_L2C_WPAR_IOBX(0), mask);
+ else
+ cvmx_write_csr(CVMX_L2C_SPAR4,
+ (cvmx_read_csr(CVMX_L2C_SPAR4) & ~0xFF) | mask);
return 0;
}
int cvmx_l2c_get_hw_way_partition(void)
{
- return cvmx_read_csr(CVMX_L2C_SPAR4) & (0xFF);
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+ return cvmx_read_csr(CVMX_L2C_WPAR_IOBX(0)) & 0xffff;
+ else
+ return cvmx_read_csr(CVMX_L2C_SPAR4) & (0xFF);
}
void cvmx_l2c_config_perf(uint32_t counter, enum cvmx_l2c_event event,
uint32_t clear_on_read)
{
- union cvmx_l2c_pfctl pfctl;
+ if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX)) {
+ union cvmx_l2c_pfctl pfctl;
- pfctl.u64 = cvmx_read_csr(CVMX_L2C_PFCTL);
+ pfctl.u64 = cvmx_read_csr(CVMX_L2C_PFCTL);
- switch (counter) {
- case 0:
- pfctl.s.cnt0sel = event;
- pfctl.s.cnt0ena = 1;
- if (!cvmx_octeon_is_pass1())
+ switch (counter) {
+ case 0:
+ pfctl.s.cnt0sel = event;
+ pfctl.s.cnt0ena = 1;
pfctl.s.cnt0rdclr = clear_on_read;
- break;
- case 1:
- pfctl.s.cnt1sel = event;
- pfctl.s.cnt1ena = 1;
- if (!cvmx_octeon_is_pass1())
+ break;
+ case 1:
+ pfctl.s.cnt1sel = event;
+ pfctl.s.cnt1ena = 1;
pfctl.s.cnt1rdclr = clear_on_read;
- break;
- case 2:
- pfctl.s.cnt2sel = event;
- pfctl.s.cnt2ena = 1;
- if (!cvmx_octeon_is_pass1())
+ break;
+ case 2:
+ pfctl.s.cnt2sel = event;
+ pfctl.s.cnt2ena = 1;
pfctl.s.cnt2rdclr = clear_on_read;
- break;
- case 3:
- default:
- pfctl.s.cnt3sel = event;
- pfctl.s.cnt3ena = 1;
- if (!cvmx_octeon_is_pass1())
+ break;
+ case 3:
+ default:
+ pfctl.s.cnt3sel = event;
+ pfctl.s.cnt3ena = 1;
pfctl.s.cnt3rdclr = clear_on_read;
- break;
- }
+ break;
+ }
- cvmx_write_csr(CVMX_L2C_PFCTL, pfctl.u64);
+ cvmx_write_csr(CVMX_L2C_PFCTL, pfctl.u64);
+ } else {
+ union cvmx_l2c_tadx_prf l2c_tadx_prf;
+ int tad;
+
+ cvmx_dprintf("L2C performance counter events are different for this chip, mapping 'event' to cvmx_l2c_tad_event_t\n");
+ if (clear_on_read)
+ cvmx_dprintf("L2C counters don't support clear on read for this chip\n");
+
+ l2c_tadx_prf.u64 = cvmx_read_csr(CVMX_L2C_TADX_PRF(0));
+
+ switch (counter) {
+ case 0:
+ l2c_tadx_prf.s.cnt0sel = event;
+ break;
+ case 1:
+ l2c_tadx_prf.s.cnt1sel = event;
+ break;
+ case 2:
+ l2c_tadx_prf.s.cnt2sel = event;
+ break;
+ default:
+ case 3:
+ l2c_tadx_prf.s.cnt3sel = event;
+ break;
+ }
+ for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+ cvmx_write_csr(CVMX_L2C_TADX_PRF(tad),
+ l2c_tadx_prf.u64);
+ }
}
uint64_t cvmx_l2c_read_perf(uint32_t counter)
{
switch (counter) {
case 0:
- return cvmx_read_csr(CVMX_L2C_PFC0);
+ if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+ return cvmx_read_csr(CVMX_L2C_PFC0);
+ else {
+ uint64_t counter = 0;
+ int tad;
+ for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+ counter += cvmx_read_csr(CVMX_L2C_TADX_PFC0(tad));
+ return counter;
+ }
case 1:
- return cvmx_read_csr(CVMX_L2C_PFC1);
+ if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+ return cvmx_read_csr(CVMX_L2C_PFC1);
+ else {
+ uint64_t counter = 0;
+ int tad;
+ for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+ counter += cvmx_read_csr(CVMX_L2C_TADX_PFC1(tad));
+ return counter;
+ }
case 2:
- return cvmx_read_csr(CVMX_L2C_PFC2);
+ if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+ return cvmx_read_csr(CVMX_L2C_PFC2);
+ else {
+ uint64_t counter = 0;
+ int tad;
+ for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+ counter += cvmx_read_csr(CVMX_L2C_TADX_PFC2(tad));
+ return counter;
+ }
case 3:
default:
- return cvmx_read_csr(CVMX_L2C_PFC3);
+ if (OCTEON_IS_MODEL(OCTEON_CN5XXX) || OCTEON_IS_MODEL(OCTEON_CN3XXX))
+ return cvmx_read_csr(CVMX_L2C_PFC3);
+ else {
+ uint64_t counter = 0;
+ int tad;
+ for (tad = 0; tad < CVMX_L2C_TADS; tad++)
+ counter += cvmx_read_csr(CVMX_L2C_TADX_PFC3(tad));
+ return counter;
+ }
}
}
@@ -240,7 +288,7 @@ static void fault_in(uint64_t addr, int len)
volatile char dummy;
/*
* Adjust addr and length so we get all cache lines even for
- * small ranges spanning two cache lines
+ * small ranges spanning two cache lines.
*/
len += addr & CVMX_CACHE_LINE_MASK;
addr &= ~CVMX_CACHE_LINE_MASK;
@@ -259,67 +307,100 @@ static void fault_in(uint64_t addr, int len)
int cvmx_l2c_lock_line(uint64_t addr)
{
- int retval = 0;
- union cvmx_l2c_dbg l2cdbg;
- union cvmx_l2c_lckbase lckbase;
- union cvmx_l2c_lckoff lckoff;
- union cvmx_l2t_err l2t_err;
- l2cdbg.u64 = 0;
- lckbase.u64 = 0;
- lckoff.u64 = 0;
-
- cvmx_spinlock_lock(&cvmx_l2c_spinlock);
-
- /* Clear l2t error bits if set */
- l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
- l2t_err.s.lckerr = 1;
- l2t_err.s.lckerr2 = 1;
- cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ int shift = CVMX_L2C_TAG_ADDR_ALIAS_SHIFT;
+ uint64_t assoc = cvmx_l2c_get_num_assoc();
+ uint64_t tag = addr >> shift;
+ uint64_t index = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, cvmx_l2c_address_to_index(addr) << CVMX_L2C_IDX_ADDR_SHIFT);
+ uint64_t way;
+ union cvmx_l2c_tadx_tag l2c_tadx_tag;
+
+ CVMX_CACHE_LCKL2(CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, addr), 0);
+
+ /* Make sure we were able to lock the line */
+ for (way = 0; way < assoc; way++) {
+ CVMX_CACHE_LTGL2I(index | (way << shift), 0);
+ /* make sure CVMX_L2C_TADX_TAG is updated */
+ CVMX_SYNC;
+ l2c_tadx_tag.u64 = cvmx_read_csr(CVMX_L2C_TADX_TAG(0));
+ if (l2c_tadx_tag.s.valid && l2c_tadx_tag.s.tag == tag)
+ break;
+ }
- addr &= ~CVMX_CACHE_LINE_MASK;
+ /* Check if a valid line is found */
+ if (way >= assoc) {
+ /* cvmx_dprintf("ERROR: cvmx_l2c_lock_line: line not found for locking at 0x%llx address\n", (unsigned long long)addr); */
+ return -1;
+ }
- /* Set this core as debug core */
- l2cdbg.s.ppnum = cvmx_get_core_num();
- CVMX_SYNC;
- cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
- cvmx_read_csr(CVMX_L2C_DBG);
-
- lckoff.s.lck_offset = 0; /* Only lock 1 line at a time */
- cvmx_write_csr(CVMX_L2C_LCKOFF, lckoff.u64);
- cvmx_read_csr(CVMX_L2C_LCKOFF);
-
- if (((union cvmx_l2c_cfg) (cvmx_read_csr(CVMX_L2C_CFG))).s.idxalias) {
- int alias_shift =
- CVMX_L2C_IDX_ADDR_SHIFT + 2 * CVMX_L2_SET_BITS - 1;
- uint64_t addr_tmp =
- addr ^ (addr & ((1 << alias_shift) - 1)) >>
- CVMX_L2_SET_BITS;
- lckbase.s.lck_base = addr_tmp >> 7;
+ /* Check if lock bit is not set */
+ if (!l2c_tadx_tag.s.lock) {
+ /* cvmx_dprintf("ERROR: cvmx_l2c_lock_line: Not able to lock at 0x%llx address\n", (unsigned long long)addr); */
+ return -1;
+ }
+ return way;
} else {
- lckbase.s.lck_base = addr >> 7;
- }
+ int retval = 0;
+ union cvmx_l2c_dbg l2cdbg;
+ union cvmx_l2c_lckbase lckbase;
+ union cvmx_l2c_lckoff lckoff;
+ union cvmx_l2t_err l2t_err;
- lckbase.s.lck_ena = 1;
- cvmx_write_csr(CVMX_L2C_LCKBASE, lckbase.u64);
- cvmx_read_csr(CVMX_L2C_LCKBASE); /* Make sure it gets there */
+ cvmx_spinlock_lock(&cvmx_l2c_spinlock);
- fault_in(addr, CVMX_CACHE_LINE_SIZE);
+ l2cdbg.u64 = 0;
+ lckbase.u64 = 0;
+ lckoff.u64 = 0;
- lckbase.s.lck_ena = 0;
- cvmx_write_csr(CVMX_L2C_LCKBASE, lckbase.u64);
- cvmx_read_csr(CVMX_L2C_LCKBASE); /* Make sure it gets there */
+ /* Clear l2t error bits if set */
+ l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
+ l2t_err.s.lckerr = 1;
+ l2t_err.s.lckerr2 = 1;
+ cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
- /* Stop being debug core */
- cvmx_write_csr(CVMX_L2C_DBG, 0);
- cvmx_read_csr(CVMX_L2C_DBG);
+ addr &= ~CVMX_CACHE_LINE_MASK;
- l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
- if (l2t_err.s.lckerr || l2t_err.s.lckerr2)
- retval = 1; /* We were unable to lock the line */
+ /* Set this core as debug core */
+ l2cdbg.s.ppnum = cvmx_get_core_num();
+ CVMX_SYNC;
+ cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
+ cvmx_read_csr(CVMX_L2C_DBG);
+
+ lckoff.s.lck_offset = 0; /* Only lock 1 line at a time */
+ cvmx_write_csr(CVMX_L2C_LCKOFF, lckoff.u64);
+ cvmx_read_csr(CVMX_L2C_LCKOFF);
+
+ if (((union cvmx_l2c_cfg)(cvmx_read_csr(CVMX_L2C_CFG))).s.idxalias) {
+ int alias_shift = CVMX_L2C_IDX_ADDR_SHIFT + 2 * CVMX_L2_SET_BITS - 1;
+ uint64_t addr_tmp = addr ^ (addr & ((1 << alias_shift) - 1)) >> CVMX_L2_SET_BITS;
+ lckbase.s.lck_base = addr_tmp >> 7;
+ } else {
+ lckbase.s.lck_base = addr >> 7;
+ }
- cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
+ lckbase.s.lck_ena = 1;
+ cvmx_write_csr(CVMX_L2C_LCKBASE, lckbase.u64);
+ /* Make sure it gets there */
+ cvmx_read_csr(CVMX_L2C_LCKBASE);
- return retval;
+ fault_in(addr, CVMX_CACHE_LINE_SIZE);
+
+ lckbase.s.lck_ena = 0;
+ cvmx_write_csr(CVMX_L2C_LCKBASE, lckbase.u64);
+ /* Make sure it gets there */
+ cvmx_read_csr(CVMX_L2C_LCKBASE);
+
+ /* Stop being debug core */
+ cvmx_write_csr(CVMX_L2C_DBG, 0);
+ cvmx_read_csr(CVMX_L2C_DBG);
+
+ l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
+ if (l2t_err.s.lckerr || l2t_err.s.lckerr2)
+ retval = 1; /* We were unable to lock the line */
+
+ cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
+ return retval;
+ }
}
int cvmx_l2c_lock_mem_region(uint64_t start, uint64_t len)
@@ -336,7 +417,6 @@ int cvmx_l2c_lock_mem_region(uint64_t start, uint64_t len)
start += CVMX_CACHE_LINE_SIZE;
len -= CVMX_CACHE_LINE_SIZE;
}
-
return retval;
}
@@ -344,80 +424,73 @@ void cvmx_l2c_flush(void)
{
uint64_t assoc, set;
uint64_t n_assoc, n_set;
- union cvmx_l2c_dbg l2cdbg;
-
- cvmx_spinlock_lock(&cvmx_l2c_spinlock);
- l2cdbg.u64 = 0;
- if (!OCTEON_IS_MODEL(OCTEON_CN30XX))
- l2cdbg.s.ppnum = cvmx_get_core_num();
- l2cdbg.s.finv = 1;
- n_set = CVMX_L2_SETS;
- n_assoc = l2_size_half() ? (CVMX_L2_ASSOC / 2) : CVMX_L2_ASSOC;
- for (set = 0; set < n_set; set++) {
- for (assoc = 0; assoc < n_assoc; assoc++) {
- l2cdbg.s.set = assoc;
- /* Enter debug mode, and make sure all other
- ** writes complete before we enter debug
- ** mode */
- CVMX_SYNCW;
- cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
- cvmx_read_csr(CVMX_L2C_DBG);
-
- CVMX_PREPARE_FOR_STORE(CVMX_ADD_SEG
- (CVMX_MIPS_SPACE_XKPHYS,
- set * CVMX_CACHE_LINE_SIZE), 0);
- CVMX_SYNCW; /* Push STF out to L2 */
- /* Exit debug mode */
- CVMX_SYNC;
- cvmx_write_csr(CVMX_L2C_DBG, 0);
- cvmx_read_csr(CVMX_L2C_DBG);
+ n_set = cvmx_l2c_get_num_sets();
+ n_assoc = cvmx_l2c_get_num_assoc();
+
+ if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+ uint64_t address;
+ /* These may look like constants, but they aren't... */
+ int assoc_shift = CVMX_L2C_TAG_ADDR_ALIAS_SHIFT;
+ int set_shift = CVMX_L2C_IDX_ADDR_SHIFT;
+ for (set = 0; set < n_set; set++) {
+ for (assoc = 0; assoc < n_assoc; assoc++) {
+ address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+ (assoc << assoc_shift) | (set << set_shift));
+ CVMX_CACHE_WBIL2I(address, 0);
+ }
}
+ } else {
+ for (set = 0; set < n_set; set++)
+ for (assoc = 0; assoc < n_assoc; assoc++)
+ cvmx_l2c_flush_line(assoc, set);
}
-
- cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
}
+
int cvmx_l2c_unlock_line(uint64_t address)
{
- int assoc;
- union cvmx_l2c_tag tag;
- union cvmx_l2c_dbg l2cdbg;
- uint32_t tag_addr;
- uint32_t index = cvmx_l2c_address_to_index(address);
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ int assoc;
+ union cvmx_l2c_tag tag;
+ uint32_t tag_addr;
+ uint32_t index = cvmx_l2c_address_to_index(address);
+
+ tag_addr = ((address >> CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) & ((1 << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) - 1));
+
+ /*
+ * For 63XX, we can flush a line by using the physical
+ * address directly, so finding the cache line used by
+ * the address is only required to provide the proper
+ * return value for the function.
+ */
+ for (assoc = 0; assoc < CVMX_L2_ASSOC; assoc++) {
+ tag = cvmx_l2c_get_tag(assoc, index);
+
+ if (tag.s.V && (tag.s.addr == tag_addr)) {
+ CVMX_CACHE_WBIL2(CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, address), 0);
+ return tag.s.L;
+ }
+ }
+ } else {
+ int assoc;
+ union cvmx_l2c_tag tag;
+ uint32_t tag_addr;
- cvmx_spinlock_lock(&cvmx_l2c_spinlock);
- /* Compute portion of address that is stored in tag */
- tag_addr =
- ((address >> CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) &
- ((1 << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) - 1));
- for (assoc = 0; assoc < CVMX_L2_ASSOC; assoc++) {
- tag = cvmx_get_l2c_tag(assoc, index);
+ uint32_t index = cvmx_l2c_address_to_index(address);
- if (tag.s.V && (tag.s.addr == tag_addr)) {
- l2cdbg.u64 = 0;
- l2cdbg.s.ppnum = cvmx_get_core_num();
- l2cdbg.s.set = assoc;
- l2cdbg.s.finv = 1;
+ /* Compute portion of address that is stored in tag */
+ tag_addr = ((address >> CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) & ((1 << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) - 1));
+ for (assoc = 0; assoc < CVMX_L2_ASSOC; assoc++) {
+ tag = cvmx_l2c_get_tag(assoc, index);
- CVMX_SYNC;
- /* Enter debug mode */
- cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
- cvmx_read_csr(CVMX_L2C_DBG);
-
- CVMX_PREPARE_FOR_STORE(CVMX_ADD_SEG
- (CVMX_MIPS_SPACE_XKPHYS,
- address), 0);
- CVMX_SYNC;
- /* Exit debug mode */
- cvmx_write_csr(CVMX_L2C_DBG, 0);
- cvmx_read_csr(CVMX_L2C_DBG);
- cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
- return tag.s.L;
+ if (tag.s.V && (tag.s.addr == tag_addr)) {
+ cvmx_l2c_flush_line(assoc, index);
+ return tag.s.L;
+ }
}
}
- cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
return 0;
}
@@ -445,48 +518,49 @@ union __cvmx_l2c_tag {
uint64_t u64;
struct cvmx_l2c_tag_cn50xx {
uint64_t reserved:40;
- 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 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:20; /* Phys mem addr (33..14) */
} cn50xx;
struct cvmx_l2c_tag_cn30xx {
uint64_t reserved:41;
- 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 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:19; /* Phys mem addr (33..15) */
} cn30xx;
struct cvmx_l2c_tag_cn31xx {
uint64_t reserved:42;
- 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 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:18; /* Phys mem addr (33..16) */
} cn31xx;
struct cvmx_l2c_tag_cn38xx {
uint64_t reserved:43;
- 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 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:17; /* Phys mem addr (33..17) */
} cn38xx;
struct cvmx_l2c_tag_cn58xx {
uint64_t reserved:44;
- 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 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:16; /* Phys mem addr (33..18) */
} cn58xx;
struct cvmx_l2c_tag_cn58xx cn56xx; /* 2048 sets */
struct cvmx_l2c_tag_cn31xx cn52xx; /* 512 sets */
};
+
/**
* @INTERNAL
* Function to read a L2C tag. This code make the current core
@@ -503,7 +577,7 @@ union __cvmx_l2c_tag {
static union __cvmx_l2c_tag __read_l2_tag(uint64_t assoc, uint64_t index)
{
- uint64_t debug_tag_addr = (((1ULL << 63) | (index << 7)) + 96);
+ uint64_t debug_tag_addr = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, (index << 7) + 96);
uint64_t core = cvmx_get_core_num();
union __cvmx_l2c_tag tag_val;
uint64_t dbg_addr = CVMX_L2C_DBG;
@@ -512,12 +586,15 @@ static union __cvmx_l2c_tag __read_l2_tag(uint64_t assoc, uint64_t index)
union cvmx_l2c_dbg debug_val;
debug_val.u64 = 0;
/*
- * For low core count parts, the core number is always small enough
- * to stay in the correct field and not set any reserved bits.
+ * For low core count parts, the core number is always small
+ * enough to stay in the correct field and not set any
+ * reserved bits.
*/
debug_val.s.ppnum = core;
debug_val.s.l2t = 1;
debug_val.s.set = assoc;
+
+ local_irq_save(flags);
/*
* Make sure core is quiet (no prefetches, etc.) before
* entering debug mode.
@@ -526,112 +603,139 @@ static union __cvmx_l2c_tag __read_l2_tag(uint64_t assoc, uint64_t index)
/* Flush L1 to make sure debug load misses L1 */
CVMX_DCACHE_INVALIDATE;
- local_irq_save(flags);
-
/*
* The following must be done in assembly as when in debug
* mode all data loads from L2 return special debug data, not
- * normal memory contents. Also, interrupts must be
- * disabled, since if an interrupt occurs while in debug mode
- * the ISR will get debug data from all its memory reads
- * instead of the contents of memory
+ * normal memory contents. Also, interrupts must be disabled,
+ * since if an interrupt occurs while in debug mode the ISR
+ * will get debug data from all its memory * reads instead of
+ * the contents of memory.
*/
- asm volatile (".set push \n"
- " .set mips64 \n"
- " .set noreorder \n"
- /* Enter debug mode, wait for store */
- " sd %[dbg_val], 0(%[dbg_addr]) \n"
- " ld $0, 0(%[dbg_addr]) \n"
- /* Read L2C tag data */
- " ld %[tag_val], 0(%[tag_addr]) \n"
- /* Exit debug mode, wait for store */
- " sd $0, 0(%[dbg_addr]) \n"
- " ld $0, 0(%[dbg_addr]) \n"
- /* Invalidate dcache to discard debug data */
- " cache 9, 0($0) \n"
- " .set pop" :
- [tag_val] "=r"(tag_val.u64) : [dbg_addr] "r"(dbg_addr),
- [dbg_val] "r"(debug_val.u64),
- [tag_addr] "r"(debug_tag_addr) : "memory");
+ asm volatile (
+ ".set push\n\t"
+ ".set mips64\n\t"
+ ".set noreorder\n\t"
+ "sd %[dbg_val], 0(%[dbg_addr])\n\t" /* Enter debug mode, wait for store */
+ "ld $0, 0(%[dbg_addr])\n\t"
+ "ld %[tag_val], 0(%[tag_addr])\n\t" /* Read L2C tag data */
+ "sd $0, 0(%[dbg_addr])\n\t" /* Exit debug mode, wait for store */
+ "ld $0, 0(%[dbg_addr])\n\t"
+ "cache 9, 0($0)\n\t" /* Invalidate dcache to discard debug data */
+ ".set pop"
+ : [tag_val] "=r" (tag_val)
+ : [dbg_addr] "r" (dbg_addr), [dbg_val] "r" (debug_val), [tag_addr] "r" (debug_tag_addr)
+ : "memory");
local_irq_restore(flags);
- return tag_val;
+ return tag_val;
}
+
union cvmx_l2c_tag cvmx_l2c_get_tag(uint32_t association, uint32_t index)
{
- union __cvmx_l2c_tag tmp_tag;
union cvmx_l2c_tag tag;
tag.u64 = 0;
if ((int)association >= cvmx_l2c_get_num_assoc()) {
- cvmx_dprintf
- ("ERROR: cvmx_get_l2c_tag association out of range\n");
+ cvmx_dprintf("ERROR: cvmx_l2c_get_tag association out of range\n");
return tag;
}
if ((int)index >= cvmx_l2c_get_num_sets()) {
- cvmx_dprintf("ERROR: cvmx_get_l2c_tag "
- "index out of range (arg: %d, max: %d\n",
- index, cvmx_l2c_get_num_sets());
+ cvmx_dprintf("ERROR: cvmx_l2c_get_tag index out of range (arg: %d, max: %d)\n",
+ (int)index, cvmx_l2c_get_num_sets());
return tag;
}
- /* __read_l2_tag is intended for internal use only */
- tmp_tag = __read_l2_tag(association, index);
-
- /*
- * Convert all tag structure types to generic version, as it
- * can represent all models.
- */
- if (OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN56XX)) {
- tag.s.V = tmp_tag.cn58xx.V;
- tag.s.D = tmp_tag.cn58xx.D;
- tag.s.L = tmp_tag.cn58xx.L;
- tag.s.U = tmp_tag.cn58xx.U;
- tag.s.addr = tmp_tag.cn58xx.addr;
- } else if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
- tag.s.V = tmp_tag.cn38xx.V;
- tag.s.D = tmp_tag.cn38xx.D;
- tag.s.L = tmp_tag.cn38xx.L;
- tag.s.U = tmp_tag.cn38xx.U;
- tag.s.addr = tmp_tag.cn38xx.addr;
- } else if (OCTEON_IS_MODEL(OCTEON_CN31XX)
- || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
- tag.s.V = tmp_tag.cn31xx.V;
- tag.s.D = tmp_tag.cn31xx.D;
- tag.s.L = tmp_tag.cn31xx.L;
- tag.s.U = tmp_tag.cn31xx.U;
- tag.s.addr = tmp_tag.cn31xx.addr;
- } else if (OCTEON_IS_MODEL(OCTEON_CN30XX)) {
- tag.s.V = tmp_tag.cn30xx.V;
- tag.s.D = tmp_tag.cn30xx.D;
- tag.s.L = tmp_tag.cn30xx.L;
- tag.s.U = tmp_tag.cn30xx.U;
- tag.s.addr = tmp_tag.cn30xx.addr;
- } else if (OCTEON_IS_MODEL(OCTEON_CN50XX)) {
- tag.s.V = tmp_tag.cn50xx.V;
- tag.s.D = tmp_tag.cn50xx.D;
- tag.s.L = tmp_tag.cn50xx.L;
- tag.s.U = tmp_tag.cn50xx.U;
- tag.s.addr = tmp_tag.cn50xx.addr;
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ union cvmx_l2c_tadx_tag l2c_tadx_tag;
+ uint64_t address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+ (association << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) |
+ (index << CVMX_L2C_IDX_ADDR_SHIFT));
+ /*
+ * Use L2 cache Index load tag cache instruction, as
+ * hardware loads the virtual tag for the L2 cache
+ * block with the contents of L2C_TAD0_TAG
+ * register.
+ */
+ CVMX_CACHE_LTGL2I(address, 0);
+ CVMX_SYNC; /* make sure CVMX_L2C_TADX_TAG is updated */
+ l2c_tadx_tag.u64 = cvmx_read_csr(CVMX_L2C_TADX_TAG(0));
+
+ tag.s.V = l2c_tadx_tag.s.valid;
+ tag.s.D = l2c_tadx_tag.s.dirty;
+ tag.s.L = l2c_tadx_tag.s.lock;
+ tag.s.U = l2c_tadx_tag.s.use;
+ tag.s.addr = l2c_tadx_tag.s.tag;
} else {
- cvmx_dprintf("Unsupported OCTEON Model in %s\n", __func__);
+ union __cvmx_l2c_tag tmp_tag;
+ /* __read_l2_tag is intended for internal use only */
+ tmp_tag = __read_l2_tag(association, index);
+
+ /*
+ * Convert all tag structure types to generic version,
+ * as it can represent all models.
+ */
+ if (OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN56XX)) {
+ tag.s.V = tmp_tag.cn58xx.V;
+ tag.s.D = tmp_tag.cn58xx.D;
+ tag.s.L = tmp_tag.cn58xx.L;
+ tag.s.U = tmp_tag.cn58xx.U;
+ tag.s.addr = tmp_tag.cn58xx.addr;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
+ tag.s.V = tmp_tag.cn38xx.V;
+ tag.s.D = tmp_tag.cn38xx.D;
+ tag.s.L = tmp_tag.cn38xx.L;
+ tag.s.U = tmp_tag.cn38xx.U;
+ tag.s.addr = tmp_tag.cn38xx.addr;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
+ tag.s.V = tmp_tag.cn31xx.V;
+ tag.s.D = tmp_tag.cn31xx.D;
+ tag.s.L = tmp_tag.cn31xx.L;
+ tag.s.U = tmp_tag.cn31xx.U;
+ tag.s.addr = tmp_tag.cn31xx.addr;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN30XX)) {
+ tag.s.V = tmp_tag.cn30xx.V;
+ tag.s.D = tmp_tag.cn30xx.D;
+ tag.s.L = tmp_tag.cn30xx.L;
+ tag.s.U = tmp_tag.cn30xx.U;
+ tag.s.addr = tmp_tag.cn30xx.addr;
+ } else if (OCTEON_IS_MODEL(OCTEON_CN50XX)) {
+ tag.s.V = tmp_tag.cn50xx.V;
+ tag.s.D = tmp_tag.cn50xx.D;
+ tag.s.L = tmp_tag.cn50xx.L;
+ tag.s.U = tmp_tag.cn50xx.U;
+ tag.s.addr = tmp_tag.cn50xx.addr;
+ } else {
+ cvmx_dprintf("Unsupported OCTEON Model in %s\n", __func__);
+ }
}
-
return tag;
}
uint32_t cvmx_l2c_address_to_index(uint64_t addr)
{
uint64_t idx = addr >> CVMX_L2C_IDX_ADDR_SHIFT;
- union cvmx_l2c_cfg l2c_cfg;
- l2c_cfg.u64 = cvmx_read_csr(CVMX_L2C_CFG);
+ int indxalias = 0;
- if (l2c_cfg.s.idxalias) {
- idx ^=
- ((addr & CVMX_L2C_ALIAS_MASK) >>
- CVMX_L2C_TAG_ADDR_ALIAS_SHIFT);
+ if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
+ union cvmx_l2c_ctl l2c_ctl;
+ l2c_ctl.u64 = cvmx_read_csr(CVMX_L2C_CTL);
+ indxalias = !l2c_ctl.s.disidxalias;
+ } else {
+ union cvmx_l2c_cfg l2c_cfg;
+ l2c_cfg.u64 = cvmx_read_csr(CVMX_L2C_CFG);
+ indxalias = l2c_cfg.s.idxalias;
+ }
+
+ if (indxalias) {
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ uint32_t a_14_12 = (idx / (CVMX_L2C_MEMBANK_SELECT_SIZE/(1<<CVMX_L2C_IDX_ADDR_SHIFT))) & 0x7;
+ idx ^= idx / cvmx_l2c_get_num_sets();
+ idx ^= a_14_12;
+ } else {
+ idx ^= ((addr & CVMX_L2C_ALIAS_MASK) >> CVMX_L2C_TAG_ADDR_ALIAS_SHIFT);
+ }
}
idx &= CVMX_L2C_IDX_MASK;
return idx;
@@ -652,10 +756,9 @@ int cvmx_l2c_get_set_bits(void)
int l2_set_bits;
if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN58XX))
l2_set_bits = 11; /* 2048 sets */
- else if (OCTEON_IS_MODEL(OCTEON_CN38XX))
+ else if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN63XX))
l2_set_bits = 10; /* 1024 sets */
- else if (OCTEON_IS_MODEL(OCTEON_CN31XX)
- || OCTEON_IS_MODEL(OCTEON_CN52XX))
+ else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN52XX))
l2_set_bits = 9; /* 512 sets */
else if (OCTEON_IS_MODEL(OCTEON_CN30XX))
l2_set_bits = 8; /* 256 sets */
@@ -666,7 +769,6 @@ int cvmx_l2c_get_set_bits(void)
l2_set_bits = 11; /* 2048 sets */
}
return l2_set_bits;
-
}
/* Return the number of sets in the L2 Cache */
@@ -682,8 +784,11 @@ int cvmx_l2c_get_num_assoc(void)
if (OCTEON_IS_MODEL(OCTEON_CN56XX) ||
OCTEON_IS_MODEL(OCTEON_CN52XX) ||
OCTEON_IS_MODEL(OCTEON_CN58XX) ||
- OCTEON_IS_MODEL(OCTEON_CN50XX) || OCTEON_IS_MODEL(OCTEON_CN38XX))
+ OCTEON_IS_MODEL(OCTEON_CN50XX) ||
+ OCTEON_IS_MODEL(OCTEON_CN38XX))
l2_assoc = 8;
+ else if (OCTEON_IS_MODEL(OCTEON_CN63XX))
+ l2_assoc = 16;
else if (OCTEON_IS_MODEL(OCTEON_CN31XX) ||
OCTEON_IS_MODEL(OCTEON_CN30XX))
l2_assoc = 4;
@@ -693,11 +798,42 @@ int cvmx_l2c_get_num_assoc(void)
}
/* Check to see if part of the cache is disabled */
- if (cvmx_fuse_read(265))
- l2_assoc = l2_assoc >> 2;
- else if (cvmx_fuse_read(264))
- l2_assoc = l2_assoc >> 1;
-
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ union cvmx_mio_fus_dat3 mio_fus_dat3;
+
+ mio_fus_dat3.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT3);
+ /*
+ * cvmx_mio_fus_dat3.s.l2c_crip fuses map as follows
+ * <2> will be not used for 63xx
+ * <1> disables 1/2 ways
+ * <0> disables 1/4 ways
+ * They are cumulative, so for 63xx:
+ * <1> <0>
+ * 0 0 16-way 2MB cache
+ * 0 1 12-way 1.5MB cache
+ * 1 0 8-way 1MB cache
+ * 1 1 4-way 512KB cache
+ */
+
+ if (mio_fus_dat3.s.l2c_crip == 3)
+ l2_assoc = 4;
+ else if (mio_fus_dat3.s.l2c_crip == 2)
+ l2_assoc = 8;
+ else if (mio_fus_dat3.s.l2c_crip == 1)
+ l2_assoc = 12;
+ } else {
+ union cvmx_l2d_fus3 val;
+ val.u64 = cvmx_read_csr(CVMX_L2D_FUS3);
+ /*
+ * Using shifts here, as bit position names are
+ * different for each model but they all mean the
+ * same.
+ */
+ if ((val.u64 >> 35) & 0x1)
+ l2_assoc = l2_assoc >> 2;
+ else if ((val.u64 >> 34) & 0x1)
+ l2_assoc = l2_assoc >> 1;
+ }
return l2_assoc;
}
@@ -711,24 +847,55 @@ int cvmx_l2c_get_num_assoc(void)
*/
void cvmx_l2c_flush_line(uint32_t assoc, uint32_t index)
{
- union cvmx_l2c_dbg l2cdbg;
+ /* Check the range of the index. */
+ if (index > (uint32_t)cvmx_l2c_get_num_sets()) {
+ cvmx_dprintf("ERROR: cvmx_l2c_flush_line index out of range.\n");
+ return;
+ }
- l2cdbg.u64 = 0;
- l2cdbg.s.ppnum = cvmx_get_core_num();
- l2cdbg.s.finv = 1;
+ /* Check the range of association. */
+ if (assoc > (uint32_t)cvmx_l2c_get_num_assoc()) {
+ cvmx_dprintf("ERROR: cvmx_l2c_flush_line association out of range.\n");
+ return;
+ }
- l2cdbg.s.set = assoc;
- /*
- * Enter debug mode, and make sure all other writes complete
- * before we enter debug mode.
- */
- asm volatile ("sync" : : : "memory");
- cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
- cvmx_read_csr(CVMX_L2C_DBG);
-
- CVMX_PREPARE_FOR_STORE(((1ULL << 63) + (index) * 128), 0);
- /* Exit debug mode */
- asm volatile ("sync" : : : "memory");
- cvmx_write_csr(CVMX_L2C_DBG, 0);
- cvmx_read_csr(CVMX_L2C_DBG);
+ if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ uint64_t address;
+ /* Create the address based on index and association.
+ * Bits<20:17> select the way of the cache block involved in
+ * the operation
+ * Bits<16:7> of the effect address select the index
+ */
+ address = CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+ (assoc << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT) |
+ (index << CVMX_L2C_IDX_ADDR_SHIFT));
+ CVMX_CACHE_WBIL2I(address, 0);
+ } else {
+ union cvmx_l2c_dbg l2cdbg;
+
+ l2cdbg.u64 = 0;
+ if (!OCTEON_IS_MODEL(OCTEON_CN30XX))
+ l2cdbg.s.ppnum = cvmx_get_core_num();
+ l2cdbg.s.finv = 1;
+
+ l2cdbg.s.set = assoc;
+ cvmx_spinlock_lock(&cvmx_l2c_spinlock);
+ /*
+ * Enter debug mode, and make sure all other writes
+ * complete before we enter debug mode
+ */
+ CVMX_SYNC;
+ cvmx_write_csr(CVMX_L2C_DBG, l2cdbg.u64);
+ cvmx_read_csr(CVMX_L2C_DBG);
+
+ CVMX_PREPARE_FOR_STORE(CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS,
+ index * CVMX_CACHE_LINE_SIZE),
+ 0);
+ /* Exit debug mode */
+ CVMX_SYNC;
+ cvmx_write_csr(CVMX_L2C_DBG, 0);
+ cvmx_read_csr(CVMX_L2C_DBG);
+ cvmx_spinlock_unlock(&cvmx_l2c_spinlock);
+ }
}
+
diff --git a/arch/mips/include/asm/octeon/cvmx-asm.h b/arch/mips/include/asm/octeon/cvmx-asm.h
index b21d3fc..5de5de9 100644
--- a/arch/mips/include/asm/octeon/cvmx-asm.h
+++ b/arch/mips/include/asm/octeon/cvmx-asm.h
@@ -114,6 +114,17 @@
#define CVMX_DCACHE_INVALIDATE \
{ CVMX_SYNC; asm volatile ("cache 9, 0($0)" : : ); }
+#define CVMX_CACHE(op, address, offset) \
+ asm volatile ("cache " CVMX_TMP_STR(op) ", " CVMX_TMP_STR(offset) "(%[rbase])" \
+ : : [rbase] "d" (address) )
+/* fetch and lock the state. */
+#define CVMX_CACHE_LCKL2(address, offset) CVMX_CACHE(31, address, offset)
+/* unlock the state. */
+#define CVMX_CACHE_WBIL2(address, offset) CVMX_CACHE(23, address, offset)
+/* invalidate the cache block and clear the USED bits for the block */
+#define CVMX_CACHE_WBIL2I(address, offset) CVMX_CACHE(3, address, offset)
+/* load virtual tag and data for the L2 cache block into L2C_TAD0_TAG register */
+#define CVMX_CACHE_LTGL2I(address, offset) CVMX_CACHE(7, address, offset)
#define CVMX_POP(result, input) \
asm ("pop %[rd],%[rs]" : [rd] "=d" (result) : [rs] "d" (input))
diff --git a/arch/mips/include/asm/octeon/cvmx-l2c.h b/arch/mips/include/asm/octeon/cvmx-l2c.h
index 2a8c090..0b32c5b 100644
--- a/arch/mips/include/asm/octeon/cvmx-l2c.h
+++ b/arch/mips/include/asm/octeon/cvmx-l2c.h
@@ -4,7 +4,7 @@
* Contact: support@xxxxxxxxxxxxxxxxxx
* This file is part of the OCTEON SDK
*
- * Copyright (c) 2003-2008 Cavium Networks
+ * Copyright (c) 2003-2010 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
@@ -26,7 +26,6 @@
***********************license end**************************************/
/*
- *
* Interface to the Level 2 Cache (L2C) control, measurement, and debugging
* facilities.
*/
@@ -34,93 +33,126 @@
#ifndef __CVMX_L2C_H__
#define __CVMX_L2C_H__
-/* Deprecated macro, use function */
-#define CVMX_L2_ASSOC cvmx_l2c_get_num_assoc()
-
-/* Deprecated macro, use function */
-#define CVMX_L2_SET_BITS cvmx_l2c_get_set_bits()
+#define CVMX_L2_ASSOC cvmx_l2c_get_num_assoc() /* Deprecated macro, use function */
+#define CVMX_L2_SET_BITS cvmx_l2c_get_set_bits() /* Deprecated macro, use function */
+#define CVMX_L2_SETS cvmx_l2c_get_num_sets() /* Deprecated macro, use function */
-/* Deprecated macro, use function */
-#define CVMX_L2_SETS cvmx_l2c_get_num_sets()
#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_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
-#define CVMX_L2C_ALIAS_MASK \
- (CVMX_L2C_IDX_MASK << CVMX_L2C_TAG_ADDR_ALIAS_SHIFT)
+/* Defines for Virtualizations, valid only from Octeon II onwards. */
+#define CVMX_L2C_VRT_MAX_VIRTID_ALLOWED ((OCTEON_IS_MODEL(OCTEON_CN63XX)) ? 64 : 0)
+#define CVMX_L2C_VRT_MAX_MEMSZ_ALLOWED ((OCTEON_IS_MODEL(OCTEON_CN63XX)) ? 32 : 0)
union cvmx_l2c_tag {
uint64_t u64;
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 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;
};
+/* Number of L2C Tag-and-data sections (TADs) that are connected to LMC. */
+#define CVMX_L2C_TADS 1
+
/* 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_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_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_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
};
/**
@@ -132,10 +164,10 @@ enum cvmx_l2c_event {
* @clear_on_read: When asserted, any read of the performance counter
* clears the counter.
*
- * The routine does not clear 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);
+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.
@@ -160,18 +192,18 @@ 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.
+ * @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.
*
- * @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.
- *
- * 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.
+
+ * @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);
@@ -187,19 +219,21 @@ 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.
+ * @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.
*
- * 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.
+
+ * @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
*
@@ -263,13 +297,14 @@ int cvmx_l2c_unlock_mem_region(uint64_t start, uint64_t len);
*/
union cvmx_l2c_tag cvmx_l2c_get_tag(uint32_t association, uint32_t index);
-/* Wrapper around deprecated old function name */
-static inline union cvmx_l2c_tag cvmx_get_l2c_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
*
--
1.7.2.3
