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-rw-r--r--cvmx-tlb.c98
1 files changed, 18 insertions, 80 deletions
diff --git a/cvmx-tlb.c b/cvmx-tlb.c
index 08c5e28c74366..f02ef5d14b214 100644
--- a/cvmx-tlb.c
+++ b/cvmx-tlb.c
@@ -1,5 +1,5 @@
/***********************license start***************
- * Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
+ * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
@@ -15,7 +15,7 @@
* disclaimer in the documentation and/or other materials provided
* with the distribution.
- * * Neither the name of Cavium Networks nor the names of
+ * * 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.
@@ -26,7 +26,7 @@
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
- * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR
+ * 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
@@ -50,35 +50,14 @@
*/
#include "cvmx.h"
#include "cvmx-tlb.h"
+#include "cvmx-core.h"
+#include <math.h>
+extern __uint32_t __log2(__uint32_t);
//#define DEBUG
/**
* @INTERNAL
- * Convert page mask to string
- */
-static inline const char* __mask_to_str(uint64_t mask)
-{
- /* Most OCTEON processor does not support 1K page sizes */
- uint64_t non_1k_mask = mask + CVMX_TLB_PAGEMASK_4K;
-
- switch (non_1k_mask) {
- case CVMX_TLB_PAGEMASK_4K: return "4kb";
- case CVMX_TLB_PAGEMASK_16K: return "16kb";
- case CVMX_TLB_PAGEMASK_64K: return "64kb";
- case CVMX_TLB_PAGEMASK_256K: return "256kb";
- case CVMX_TLB_PAGEMASK_1M: return "1Mb";
- case CVMX_TLB_PAGEMASK_4M: return "4Mb";
- case CVMX_TLB_PAGEMASK_16M: return "16Mb";
- case CVMX_TLB_PAGEMASK_64M: return "64Mb";
- case CVMX_TLB_PAGEMASK_256M: return "256Mb";
- }
-
- return "";
-}
-
-/**
- * @INTERNAL
* issue the tlb read instruction
*/
static inline void __tlb_read(void){
@@ -125,7 +104,7 @@ static inline int __tlb_probe(uint64_t hi){
*/
static inline int __tlb_read_index(uint32_t tlbi){
- if (tlbi >= cvmx_tlb_size_limit()) {
+ if (tlbi >= (uint32_t)cvmx_core_get_tlb_entries()) {
return -1;
}
@@ -147,7 +126,7 @@ static inline int __tlb_write_index(uint32_t tlbi,
uint64_t lo1, uint64_t pagemask)
{
- if (tlbi >= cvmx_tlb_size_limit()) {
+ if (tlbi >= (uint32_t)cvmx_core_get_tlb_entries()) {
return -1;
}
@@ -175,7 +154,7 @@ static inline int __tlb_entry_is_free(uint32_t tlbi) {
int ret = 0;
uint64_t lo0 = 0, lo1 = 0;
- if (tlbi < cvmx_tlb_size_limit()) {
+ if (tlbi < (uint32_t)cvmx_core_get_tlb_entries()) {
__tlb_read_index(tlbi);
@@ -198,7 +177,7 @@ static inline int __tlb_entry_is_free(uint32_t tlbi) {
*/
static inline void __tlb_dump_index(uint32_t tlbi)
{
- if (tlbi < cvmx_tlb_size_limit()) {
+ if (tlbi < (uint32_t)cvmx_core_get_tlb_entries()) {
if (__tlb_entry_is_free(tlbi)) {
#ifdef DEBUG
@@ -206,8 +185,9 @@ static inline void __tlb_dump_index(uint32_t tlbi)
#endif
} else {
uint64_t lo0, lo1, pgmask;
- uint32_t hi, c0, c1;
+ uint32_t hi;
#ifdef DEBUG
+ uint32_t c0, c1;
int width = 13;
#endif
@@ -218,15 +198,10 @@ static inline void __tlb_dump_index(uint32_t tlbi)
CVMX_MF_ENTRY_LO_1(lo1);
CVMX_MF_PAGEMASK(pgmask);
-
#ifdef DEBUG
- cvmx_dprintf("Index: %3d pgmask=%s ", tlbi, __mask_to_str(pgmask));
-#endif
-
c0 = ( lo0 >> 3 ) & 7;
c1 = ( lo1 >> 3 ) & 7;
-#ifdef DEBUG
cvmx_dprintf("va=%0*lx asid=%02x\n",
width, (hi & ~0x1fffUL), hi & 0xff);
@@ -260,43 +235,6 @@ static inline uint32_t __tlb_wired_index() {
}
/**
- * Set up a wired entry. This function is designed to be used by Simple
- * Executive to set up its virtual to physical address mapping at start up
- * time. After the mapping is set up, the remaining unused TLB entries can
- * be use for run time shared memory mapping.
- *
- * Calling this function causes the C0 wired index register to increase.
- * Wired index register points to the separation between fixed TLB mapping
- * and run time shared memory mapping.
- *
- * @param hi Entry Hi
- * @param lo0 Entry Low0
- * @param lo1 Entry Low1
- * @param pagemask Pagemask
- *
- * @return 0: the entry is added
- * @return -1: out of TLB entry
- */
-int cvmx_tlb_add_wired_entry( uint64_t hi, uint64_t lo0,
- uint64_t lo1, uint64_t pagemask)
-{
- uint64_t index;
- int ret = -1;
-
- index = __tlb_wired_index();
-
- /* Check to make sure if the index is free to use */
- if (index < cvmx_tlb_size_limit() && __tlb_entry_is_free(index) ) {
- /* increase the wired index by 1*/
- __tlb_write_index(index, hi, lo0, lo1, pagemask);
- CVMX_MT_TLB_WIRED(index + 1);
- ret = 0;
- }
-
- return ret;
-}
-
-/**
* Find a free entry that can be used for share memory mapping.
*
* @return -1: no free entry found
@@ -306,7 +244,7 @@ int cvmx_tlb_allocate_runtime_entry(void)
{
uint32_t i, ret = -1;
- for (i = __tlb_wired_index(); i< cvmx_tlb_size_limit(); i++) {
+ for (i = __tlb_wired_index(); i< (uint32_t)cvmx_core_get_tlb_entries(); i++) {
/* Check to make sure the index is free to use */
if (__tlb_entry_is_free(i)) {
@@ -325,7 +263,7 @@ int cvmx_tlb_allocate_runtime_entry(void)
void cvmx_tlb_free_runtime_entry(uint32_t tlbi)
{
/* Invalidate an unwired TLB entry */
- if ((tlbi < cvmx_tlb_size_limit()) && (tlbi >= __tlb_wired_index())) {
+ if ((tlbi < (uint32_t)cvmx_core_get_tlb_entries()) && (tlbi >= __tlb_wired_index())) {
__tlb_write_index(tlbi, 0xffffffff80000000ULL, 0, 0, 0);
}
}
@@ -392,7 +330,7 @@ int cvmx_tlb_add_fixed_entry( uint64_t vaddr, uint64_t paddr, uint64_t size, uin
CVMX_MF_TLB_WIRED(index);
/* Check to make sure if the index is free to use */
- if (index < cvmx_tlb_size_limit() && __tlb_entry_is_free(index) ) {
+ if (index < (uint32_t)cvmx_core_get_tlb_entries() && __tlb_entry_is_free(index) ) {
cvmx_tlb_write_entry(index, vaddr, paddr, size, tlb_flags);
if (!__tlb_entry_is_free(index)) {
@@ -439,7 +377,7 @@ void cvmx_tlb_write_runtime_entry(int index, uint64_t vaddr, uint64_t paddr,
* >=0 TLB TLB index
*/
int cvmx_tlb_lookup(uint64_t vaddr) {
- uint64_t hi= (vaddr >> 12 ) << 12; /* We always use ASID 0 */
+ uint64_t hi= (vaddr >> 13 ) << 13; /* We always use ASID 0 */
return __tlb_probe(hi);
}
@@ -450,7 +388,7 @@ int cvmx_tlb_lookup(uint64_t vaddr) {
void cvmx_tlb_dump_shared_mapping(void) {
uint32_t tlbi;
- for ( tlbi = __tlb_wired_index(); tlbi<cvmx_tlb_size_limit(); tlbi++ ) {
+ for ( tlbi = __tlb_wired_index(); tlbi<(uint32_t)cvmx_core_get_tlb_entries(); tlbi++ ) {
__tlb_dump_index(tlbi);
}
}
@@ -463,7 +401,7 @@ void cvmx_tlb_dump_all(void) {
uint32_t tlbi;
- for (tlbi = 0; tlbi<= cvmx_tlb_size_limit(); tlbi++ ) {
+ for (tlbi = 0; tlbi<= (uint32_t)cvmx_core_get_tlb_entries(); tlbi++ ) {
__tlb_dump_index(tlbi);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-08 00:11:37 +0000