RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

bsp/arm: Correct cache misalignment handling

Browse Source 
Correct misalignment handling and prepare for locking.
This commit is contained in:
Ralf Kirchner
2014-04-17 10:59:47 +02:00
committed by Sebastian Huber
parent 92e2757b0b
commit db5a84d0ad
2 changed files with 60 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
c/src/lib/libbsp/arm/shared/arm-l2c-310/cache_.h
View File

@@ -1120,18 +1120,13 @@ cache_l2c_310_invalidate_1_line( const void *d_addr )
}
static inline void
cache_l2c_310_invalidate_range( const void *addr, size_t n_bytes )
cache_l2c_310_invalidate_range( uint32_t adx, const uint32_t ADDR_LAST )
{
if ( n_bytes != 0 ) {
uint32_t adx = (uint32_t) addr
& ~CACHE_L2C_310_INSTRUCTION_LINE_MASK;
const uint32_t end =
( adx + n_bytes ) & ~CACHE_L2C_310_INSTRUCTION_LINE_MASK;
volatile L2CC *l2cc = (volatile L2CC *) BSP_ARM_L2CC_BASE;
/* Back starting address up to start of a line and invalidate until end */
for (;
adx < end;
adx <= ADDR_LAST;
adx += CPU_INSTRUCTION_CACHE_ALIGNMENT ) {
/* Invalidate L2 cache line */
l2cc->inv_pa = adx;
@@ -1407,19 +1402,41 @@ _CPU_cache_invalidate_data_range(
)
{
if ( n_bytes > 0 ) {
/* Back starting address up to start of a line and invalidate until ADDR_LAST */
uint32_t adx = (uint32_t) addr_first
& ~CACHE_L2C_310_DATA_LINE_MASK;
const uint32_t ADDR_LAST =
(uint32_t)( (size_t)addr_first + n_bytes - 1 );
uint32_t block_end =
CACHE_MIN( ADDR_LAST, adx + CACHE_MAX_LOCKING_BYTES );
/* We have to apply a lock. Thus we will operate only CACHE_MAX_LOCKING_BYTES
* at a time */
for (;
adx <= ADDR_LAST;
adx = block_end + 1,
block_end = CACHE_MIN( ADDR_LAST, adx + CACHE_MAX_LOCKING_BYTES )) {
cache_l2c_310_invalidate_range(
addr_first,
n_bytes
adx,
block_end
);
}
arm_cache_l1_invalidate_data_range(
addr_first,
n_bytes
);
adx = (uint32_t)addr_first & ~CACHE_L2C_310_DATA_LINE_MASK;
block_end = CACHE_MIN( ADDR_LAST, adx + CACHE_MAX_LOCKING_BYTES );
for (;
adx <= ADDR_LAST;
adx = block_end + 1,
block_end = CACHE_MIN( ADDR_LAST, adx + CACHE_MAX_LOCKING_BYTES )) {
cache_l2c_310_invalidate_range(
addr_first,
n_bytes
adx,
block_end
);
}
arm_cache_l1_invalidate_data_range(
addr_first,
n_bytes
@@ -1471,12 +1488,23 @@ _CPU_cache_invalidate_instruction_range(
)
{
if ( n_bytes != 0 ) {
uint32_t adx = (uint32_t) i_addr
& ~CACHE_L2C_310_DATA_LINE_MASK;
const uint32_t ADDR_LAST =
(uint32_t)( (size_t)i_addr + n_bytes - 1 );
uint32_t block_end =
CACHE_MIN( ADDR_LAST, adx + CACHE_MAX_LOCKING_BYTES );
/* Invalidate L2 cache lines */
for (;
adx <= ADDR_LAST;
adx = block_end + 1,
block_end = CACHE_MIN( ADDR_LAST, adx + CACHE_MAX_LOCKING_BYTES )) {
cache_l2c_310_invalidate_range(
i_addr,
n_bytes
adx,
block_end
);
}
arm_cache_l1_invalidate_instruction_range(
i_addr,

10
c/src/lib/libbsp/arm/shared/include/arm-cache-l1.h
View File

@@ -247,7 +247,7 @@ static inline void arm_cache_l1_flush_data_range(
uint32_t adx = (uint32_t) d_addr
& ~ARM_CACHE_L1_DATA_LINE_MASK;
const uint32_t ADDR_LAST =
( (uint32_t) d_addr + n_bytes - 1 ) & ~ARM_CACHE_L1_DATA_LINE_MASK;
(uint32_t)( (size_t) d_addr + n_bytes - 1 );
ARM_CACHE_L1_ERRATA_764369_HANDLER();
@@ -300,13 +300,13 @@ static inline void arm_cache_l1_invalidate_data_range(
uint32_t adx = (uint32_t) d_addr
& ~ARM_CACHE_L1_DATA_LINE_MASK;
const uint32_t end =
( adx + n_bytes ) & ~ARM_CACHE_L1_DATA_LINE_MASK;
(uint32_t)( (size_t)d_addr + n_bytes -1);
ARM_CACHE_L1_ERRATA_764369_HANDLER();
/* Back starting address up to start of a line and invalidate until end */
for (;
adx < end;
adx <= end;
adx += ARM_CACHE_L1_CPU_DATA_ALIGNMENT ) {
/* Invalidate the Instruction cache line */
arm_cp15_data_cache_invalidate_line( (void*)adx );
@@ -325,7 +325,7 @@ static inline void arm_cache_l1_invalidate_instruction_range(
uint32_t adx = (uint32_t) i_addr
& ~ARM_CACHE_L1_INSTRUCTION_LINE_MASK;
const uint32_t end =
( adx + n_bytes ) & ~ARM_CACHE_L1_INSTRUCTION_LINE_MASK;
(uint32_t)( (size_t)i_addr + n_bytes -1);
arm_cache_l1_select( ARM_CACHE_L1_CSS_ID_INSTRUCTION );
@@ -333,7 +333,7 @@ static inline void arm_cache_l1_invalidate_instruction_range(
/* Back starting address up to start of a line and invalidate until end */
for (;
adx < end;
adx <= end;
adx += ARM_CACHE_L1_CPU_INSTRUCTION_ALIGNMENT ) {
/* Invalidate the Instruction cache line */
arm_cp15_instruction_cache_invalidate_line( (void*)adx );