[rtems commit] bsp/xilinx-zynq: Add cache support
Sebastian Huber
sebh at rtems.org
Mon Aug 26 07:47:34 UTC 2013
Module: rtems
Branch: master
Commit: 2bd440ed582c69f52f829ed82654a1baf781ae90
Changeset: http://git.rtems.org/rtems/commit/?id=2bd440ed582c69f52f829ed82654a1baf781ae90
Author: Ric Claus <claus at slac.stanford.edu>
Date: Thu Aug 22 14:18:14 2013 +0200
bsp/xilinx-zynq: Add cache support
---
c/src/lib/libbsp/arm/xilinx-zynq/Makefile.am | 4 +-
c/src/lib/libbsp/arm/xilinx-zynq/include/cache_.h | 886 +++++++++++++++++++++
c/src/lib/libcpu/shared/src/cache_manager.c | 19 +-
3 files changed, 906 insertions(+), 3 deletions(-)
diff --git a/c/src/lib/libbsp/arm/xilinx-zynq/Makefile.am b/c/src/lib/libbsp/arm/xilinx-zynq/Makefile.am
index 0e584b5..99ad202 100644
--- a/c/src/lib/libbsp/arm/xilinx-zynq/Makefile.am
+++ b/c/src/lib/libbsp/arm/xilinx-zynq/Makefile.am
@@ -123,8 +123,8 @@ libbsp_a_SOURCES += ../shared/arm-a9mpcore-clock-config.c
# Cache
libbsp_a_SOURCES += ../../../libcpu/shared/src/cache_manager.c
-libbsp_a_SOURCES += ../../../libcpu/arm/shared/include/cache_.h
-libbsp_a_CPPFLAGS += -I$(srcdir)/../../../libcpu/arm/shared/include
+libbsp_a_SOURCES += include/cache_.h
+libbsp_a_CPPFLAGS += -I$(srcdir)/include
# Start hooks
libbsp_a_SOURCES += startup/bspstarthooks.c
diff --git a/c/src/lib/libbsp/arm/xilinx-zynq/include/cache_.h b/c/src/lib/libbsp/arm/xilinx-zynq/include/cache_.h
new file mode 100644
index 0000000..0ac9169
--- /dev/null
+++ b/c/src/lib/libbsp/arm/xilinx-zynq/include/cache_.h
@@ -0,0 +1,886 @@
+/*
+ * Authorship
+ * ----------
+ * This software was created by
+ * R. Claus <claus at slac.stanford.edu>, 2013,
+ * Stanford Linear Accelerator Center, Stanford University.
+ *
+ * Acknowledgement of sponsorship
+ * ------------------------------
+ * This software was produced by
+ * the Stanford Linear Accelerator Center, Stanford University,
+ * under Contract DE-AC03-76SFO0515 with the Department of Energy.
+ *
+ * Government disclaimer of liability
+ * ----------------------------------
+ * Neither the United States nor the United States Department of Energy,
+ * nor any of their employees, makes any warranty, express or implied, or
+ * assumes any legal liability or responsibility for the accuracy,
+ * completeness, or usefulness of any data, apparatus, product, or process
+ * disclosed, or represents that its use would not infringe privately owned
+ * rights.
+ *
+ * Stanford disclaimer of liability
+ * --------------------------------
+ * Stanford University makes no representations or warranties, express or
+ * implied, nor assumes any liability for the use of this software.
+ *
+ * Stanford disclaimer of copyright
+ * --------------------------------
+ * Stanford University, owner of the copyright, hereby disclaims its
+ * copyright and all other rights in this software. Hence, anyone may
+ * freely use it for any purpose without restriction.
+ *
+ * Maintenance of notices
+ * ----------------------
+ * In the interest of clarity regarding the origin and status of this
+ * SLAC software, this and all the preceding Stanford University notices
+ * are to remain affixed to any copy or derivative of this software made
+ * or distributed by the recipient and are to be affixed to any copy of
+ * software made or distributed by the recipient that contains a copy or
+ * derivative of this software.
+ *
+ * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03
+ */
+
+#ifndef LIBBSP_ARM_ZYNQ_CACHE__H
+#define LIBBSP_ARM_ZYNQ_CACHE__H
+
+#include <libcpu/arm-cp15.h>
+
+/* These two defines also ensure that the rtems_cache_* functions have bodies */
+#define CPU_DATA_CACHE_ALIGNMENT 32
+#define CPU_INSTRUCTION_CACHE_ALIGNMENT 32
+
+#define CPU_CACHE_SUPPORT_PROVIDES_RANGE_FUNCTIONS
+
+#define L2CC_BASE_ADDR 0xF8F02000U
+
+#define ZYNQ_L2_CACHE_LINE_SIZE 32
+
+/* L2CC Register Offsets */
+typedef struct {
+ uint32_t cache_id; /* Cache ID */
+ uint32_t cache_type; /* Cache type */
+
+ uint8_t reserved_8[0x100 - 8];
+ uint32_t ctrl; /* Control */
+#define L2CC_ENABLE_MASK 0x00000001 /* Enables the L2CC */
+
+ uint32_t aux_ctrl; /* Auxiliary control */
+#define L2CC_AUX_EBRESPE_MASK 0x40000000 /* Early BRESP Enable */
+#define L2CC_AUX_IPFE_MASK 0x20000000 /* Instruction Prefetch Enable */
+#define L2CC_AUX_DPFE_MASK 0x10000000 /* Data Prefetch Enable */
+#define L2CC_AUX_NSIC_MASK 0x08000000 /* Non-secure interrupt access control */
+#define L2CC_AUX_NSLE_MASK 0x04000000 /* Non-secure lockdown enable */
+#define L2CC_AUX_CRP_MASK 0x02000000 /* Cache replacement policy */
+#define L2CC_AUX_FWE_MASK 0x01800000 /* Force write allocate */
+#define L2CC_AUX_SAOE_MASK 0x00400000 /* Shared attribute override enable */
+#define L2CC_AUX_PE_MASK 0x00200000 /* Parity enable */
+#define L2CC_AUX_EMBE_MASK 0x00100000 /* Event monitor bus enable */
+#define L2CC_AUX_WAY_SIZE_MASK 0x000E0000 /* Way-size */
+#define L2CC_AUX_ASSOC_MASK 0x00010000 /* Associativity */
+#define L2CC_AUX_SAIE_MASK 0x00002000 /* Shared attribute invalidate enable */
+#define L2CC_AUX_EXCL_CACHE_MASK 0x00001000 /* Exclusive cache configuration */
+#define L2CC_AUX_SBDLE_MASK 0x00000800 /* Store buffer device limitation Enable */
+#define L2CC_AUX_HPSODRE_MASK 0x00000400 /* High Priority for SO and Dev Reads Enable */
+#define L2CC_AUX_FLZE_MASK 0x00000001 /* Full line of zero enable */
+
+#define L2CC_AUX_REG_DEFAULT_MASK 0x72360000 /* Enable all prefetching, */
+ /* Cache replacement policy, Parity enable, */
+ /* Event monitor bus enable and Way Size (64 KB) */
+#define L2CC_AUX_REG_ZERO_MASK 0xFFF1FFFF
+
+ uint32_t tag_ram_ctrl;
+#define L2CC_TAG_RAM_DEFAULT_MASK 0x00000111 /* Latency for tag RAM */
+ uint32_t data_ram_ctrl;
+#define L2CC_DATA_RAM_DEFAULT_MASK 0x00000121 /* Latency for data RAM */
+
+ uint8_t reserved_110[0x200 - 0x110];
+ uint32_t ev_ctrl; /* Event counter control */
+ uint32_t ev_cnt1_cfg; /* Event counter 1 configuration */
+ uint32_t ev_cnt0_cfg; /* Event counter 0 configuration */
+ uint32_t ev_cnt1; /* Event counter 1 value */
+ uint32_t ev_cnt0; /* Event counter 0 value */
+ uint32_t int_mask; /* Interrupt enable mask */
+ uint32_t int_mask_status; /* Masked interrupt status (read-only)*/
+ uint32_t int_raw_status; /* Unmasked interrupt status */
+ uint32_t int_clr; /* Interrupt clear */
+/* Interrupt bit masks */
+#define L2CC_INT_DECERR_MASK 0x00000100 /* DECERR from L3 */
+#define L2CC_INT_SLVERR_MASK 0x00000080 /* SLVERR from L3 */
+#define L2CC_INT_ERRRD_MASK 0x00000040 /* Error on L2 data RAM (Read) */
+#define L2CC_INT_ERRRT_MASK 0x00000020 /* Error on L2 tag RAM (Read) */
+#define L2CC_INT_ERRWD_MASK 0x00000010 /* Error on L2 data RAM (Write) */
+#define L2CC_INT_ERRWT_MASK 0x00000008 /* Error on L2 tag RAM (Write) */
+#define L2CC_INT_PARRD_MASK 0x00000004 /* Parity Error on L2 data RAM (Read) */
+#define L2CC_INT_PARRT_MASK 0x00000002 /* Parity Error on L2 tag RAM (Read) */
+#define L2CC_INT_ECNTR_MASK 0x00000001 /* Event Counter1/0 Overflow Increment */
+
+ uint8_t reserved_224[0x730 - 0x224];
+ uint32_t cache_sync; /* Drain the STB */
+ uint8_t reserved_734[0x770 - 0x734];
+ uint32_t inv_pa; /* Invalidate line by PA */
+ uint8_t reserved_774[0x77c - 0x774];
+ uint32_t inv_way; /* Invalidate by Way */
+ uint8_t reserved_780[0x7b0 - 0x780];
+ uint32_t clean_pa; /* Clean Line by PA */
+ uint8_t reserved_7b4[0x7b8 - 0x7b4];
+ uint32_t clean_index; /* Clean Line by Set/Way */
+ uint32_t clean_way; /* Clean by Way */
+ uint8_t reserved_7c0[0x7f0 - 0x7c0];
+ uint32_t clean_inv_pa; /* Clean and Invalidate Line by PA */
+ uint8_t reserved_7f4[0x7f8 - 0x7f4];
+ uint32_t clean_inv_indx; /* Clean and Invalidate Line by Set/Way */
+ uint32_t clean_inv_way; /* Clean and Invalidate by Way */
+
+ uint8_t reserved_800[0x900 - 0x800];
+ uint32_t d_lockdown_0; /* Data lock down 0 */
+ uint32_t i_lockdown_0; /* Instruction lock down 0 */
+ uint32_t d_lockdown_1; /* Data lock down 1 */
+ uint32_t i_lockdown_1; /* Instruction lock down 1 */
+ uint32_t d_lockdown_2; /* Data lock down 2 */
+ uint32_t i_lockdown_2; /* Instruction lock down 2 */
+ uint32_t d_lockdown_3; /* Data lock down 3 */
+ uint32_t i_lockdown_3; /* Instruction lock down 3 */
+ uint32_t d_lockdown_4; /* Data lock down 4 */
+ uint32_t i_lockdown_4; /* Instruction lock down 4 */
+ uint32_t d_lockdown_5; /* Data lock down 5 */
+ uint32_t i_lockdown_5; /* Instruction lock down 5 */
+ uint32_t d_lockdown_6; /* Data lock down 6 */
+ uint32_t i_lockdown_6; /* Instruction lock down 6 */
+ uint32_t d_lockdown_7; /* Data lock down 7 */
+ uint32_t i_lockdown_7; /* Instruction lock down 7 */
+
+ uint8_t reserved_940[0x950 - 0x940];
+ uint32_t lock_line_en; /* Lockdown by Line Enable */
+ uint32_t unlock_way; /* Cache lockdown by way */
+
+ uint8_t reserved_958[0xc00 - 0x958];
+ uint32_t addr_filtering_start; /* Address range redirect, part 1 */
+ uint32_t addr_filtering_end; /* Address range redirect, part 2 */
+#define L2CC_ADDR_FILTER_VALID_MASK 0xFFF00000 /* Address filtering valid bits*/
+#define L2CC_ADDR_FILTER_ENABLE_MASK 0x00000001 /* Address filtering enable bit*/
+
+ uint8_t reserved_c08[0xf40 - 0xc08];
+ uint32_t debug_ctrl; /* Debug control */
+#define L2CC_DEBUG_SPIDEN_MASK 0x00000004 /* Debug SPIDEN bit */
+#define L2CC_DEBUG_DWB_MASK 0x00000002 /* Debug DWB bit, forces write through */
+#define L2CC_DEBUG_DCL_MASK 0x00000002 /* Debug DCL bit, disables cache line fill */
+
+ uint8_t reserved_f44[0xf60 - 0xf44];
+ uint32_t prefetch_ctrl; /* Purpose prefetch enables */
+ uint8_t reserved_f64[0xf80 - 0xf64];
+ uint32_t power_ctrl; /* Purpose power controls */
+} L2CC;
+
+static inline void
+zynq_cache_l1_cache_properties(uint32_t *l1LineSize,
+ uint32_t *l1NumWays,
+ uint32_t *l1NumSets)
+{
+ uint32_t id;
+
+ /* Select cache level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+ _ARM_Instruction_synchronization_barrier();
+ id = arm_cp15_get_cache_size_id();
+
+ *l1LineSize = (id & 0x0007U) + 2 + 2; /* Cache line size (+2 -> bytes) */
+ *l1NumWays = ((id >> 3) & 0x03ffU) + 1; /* Number of Ways */
+ *l1NumSets = ((id >> 13) & 0x7fffU) + 1; /* Number of Sets */
+}
+
+
+static inline void
+zynq_cache_l1_cache_flush_1_data_line(const void *d_addr)
+{
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+
+ /* Flush the Data cache */
+ arm_cp15_data_cache_clean_and_invalidate_line(d_addr);
+
+ /* Wait for L1 flush to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_flush_data_range(const void *d_addr, size_t n_bytes)
+{
+ const void * final_address;
+
+ /*
+ * Set d_addr to the beginning of the cache line; final_address indicates
+ * the last address_t which needs to be pushed. Increment d_addr and push
+ * the resulting line until final_address is passed.
+ */
+
+ if( n_bytes == 0 )
+ /* Do nothing if number of bytes to flush is zero */
+ return;
+
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+
+ final_address = (void *)((size_t)d_addr + n_bytes - 1);
+ d_addr = (void *)((size_t)d_addr & ~(CPU_DATA_CACHE_ALIGNMENT - 1));
+ while( d_addr <= final_address ) {
+ arm_cp15_data_cache_clean_and_invalidate_line( d_addr );
+ d_addr = (void *)((size_t)d_addr + CPU_DATA_CACHE_ALIGNMENT);
+ }
+
+ /* Wait for L1 flush to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_flush_entire_data(void)
+{
+ uint32_t l1LineSize, l1NumWays, l1NumSets;
+ uint32_t sets, ways, s, w;
+
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+ _ARM_Instruction_synchronization_barrier();
+
+ /* Get the L1 cache properties */
+ zynq_cache_l1_cache_properties(&l1LineSize, &l1NumWays, &l1NumSets);
+
+ ways = l1NumWays * (1 << 30);
+ sets = l1NumSets * (1 << l1LineSize);
+
+ /* Invalidate all the cache lines */
+ for (w = 0; w < ways; w += (1 << 30)) {
+ for (s = 0; s < sets; s += (1 << l1LineSize)) {
+ /* Flush by Set/Way */
+ arm_cp15_data_cache_clean_and_invalidate_line_by_set_and_way(w | s);
+ }
+ }
+
+ /* Wait for L1 flush to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_invalidate_1_data_line(const void *d_addr)
+{
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+
+ /* Invalidate the cache line */
+ arm_cp15_data_cache_invalidate_line(d_addr);
+
+ /* Wait for L1 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_invalidate_data_range(const void *d_addr, size_t n_bytes)
+{
+ const void * final_address;
+
+ /*
+ * Set d_addr to the beginning of the cache line; final_address indicates
+ * the last address_t which needs to be invalidated. Increment d_addr and
+ * invalidate the resulting line until final_address is passed.
+ */
+
+ if( n_bytes == 0 )
+ /* Do nothing if number of bytes to invalidate is zero */
+ return;
+
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+
+ final_address = (void *)((size_t)d_addr + n_bytes - 1);
+ d_addr = (void *)((size_t)d_addr & ~(CPU_DATA_CACHE_ALIGNMENT - 1));
+ while( final_address >= d_addr ) {
+ arm_cp15_data_cache_invalidate_line( d_addr );
+ d_addr = (void *)((size_t)d_addr + CPU_DATA_CACHE_ALIGNMENT);
+ }
+
+ /* Wait for L1 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_invalidate_entire_data(void)
+{
+ uint32_t l1LineSize, l1NumWays, l1NumSets;
+ uint32_t sets, ways, s, w;
+
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+ _ARM_Instruction_synchronization_barrier();
+
+ /* Get the L1 cache properties */
+ zynq_cache_l1_cache_properties(&l1LineSize, &l1NumWays, &l1NumSets);
+
+ ways = l1NumWays * (1 << 30);
+ sets = l1NumSets * (1 << l1LineSize);
+
+ /* Invalidate all the cache lines */
+ for (w = 0; w < ways; w += (1 << 30)) {
+ for (s = 0; s < sets; s += (1 << l1LineSize)) {
+ /* Invalidate by Set/Way */
+ arm_cp15_data_cache_invalidate_line_by_set_and_way(w | s);
+ }
+ }
+
+ /* Wait for L1 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_store_data(const void *d_addr)
+{
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+
+ /* Store the Data cache line */
+ arm_cp15_data_cache_clean_line(d_addr);
+
+ /* Wait for L1 store to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_freeze_data(void)
+{
+ /* TODO */
+}
+
+static inline void
+zynq_cache_l1_cache_unfreeze_data(void)
+{
+ /* TODO */
+}
+
+static inline void
+zynq_cache_l1_cache_invalidate_1_instruction_line(const void *i_addr)
+{
+ /* Select cache Level 1 and Instruction cache in CSSELR */
+ arm_cp15_set_cache_size_selection(1);
+
+ /* Invalidate the Instruction cache line */
+ arm_cp15_instruction_cache_invalidate_line(i_addr);
+
+ /* Wait for L1 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_invalidate_instruction_range(const void *i_addr, size_t n_bytes)
+{
+ const void * final_address;
+
+ /*
+ * Set i_addr to the beginning of the cache line; final_address indicates
+ * the last address_t which needs to be invalidated. Increment i_addr and
+ * invalidate the resulting line until final_address is passed.
+ */
+
+ if( n_bytes == 0 )
+ /* Do nothing if number of bytes to invalidate is zero */
+ return;
+
+ /* Select cache Level 1 and Instruction cache in CSSELR */
+ arm_cp15_set_cache_size_selection(1);
+
+ final_address = (void *)((size_t)i_addr + n_bytes - 1);
+ i_addr = (void *)((size_t)i_addr & ~(CPU_INSTRUCTION_CACHE_ALIGNMENT - 1));
+ while( final_address > i_addr ) {
+ arm_cp15_instruction_cache_invalidate_line( i_addr );
+ i_addr = (void *)((size_t)i_addr + CPU_INSTRUCTION_CACHE_ALIGNMENT);
+ }
+
+ /* Wait for L1 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_invalidate_entire_instruction(void)
+{
+ /* Select cache Level 1 and Instruction cache in CSSELR */
+ arm_cp15_set_cache_size_selection(1);
+
+ /* Invalidate the Instruction cache */
+ arm_cp15_instruction_cache_invalidate();
+
+ /* Wait for L1 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l1_cache_freeze_instruction(void)
+{
+ /* TODO */
+}
+
+static inline void
+zynq_cache_l1_cache_unfreeze_instruction(void)
+{
+ /* TODO */
+}
+
+static inline void
+zynq_cache_l1_cache_enable_data(void)
+{
+ rtems_interrupt_level level;
+ uint32_t ctrl;
+
+ rtems_interrupt_disable(level);
+
+ /* Enable caches only if they are disabled */
+ ctrl = arm_cp15_get_control();
+ if (!(ctrl & ARM_CP15_CTRL_C)) {
+ /* Clean and invalidate the Data cache */
+ zynq_cache_l1_cache_invalidate_entire_data();
+
+ /* Enable the Data cache */
+ ctrl |= ARM_CP15_CTRL_C;
+
+ arm_cp15_set_control(ctrl);
+ }
+
+ rtems_interrupt_enable(level);
+}
+
+static inline void
+zynq_cache_l1_cache_disable_data(void)
+{
+ rtems_interrupt_level level;
+
+ rtems_interrupt_disable(level);
+
+ /* Clean and invalidate the Data cache */
+ zynq_cache_l1_cache_flush_entire_data();
+
+ /* Disable the Data cache */
+ arm_cp15_set_control(arm_cp15_get_control() & ~ARM_CP15_CTRL_C);
+
+ rtems_interrupt_enable(level);
+}
+
+static inline void
+zynq_cache_l1_cache_enable_instruction(void)
+{
+ rtems_interrupt_level level;
+ uint32_t ctrl;
+
+ rtems_interrupt_disable(level);
+
+ /* Enable Instruction cache only if it is disabled */
+ ctrl = arm_cp15_get_control();
+ if (!(ctrl & ARM_CP15_CTRL_I)) {
+ /* Invalidate the Instruction cache */
+ zynq_cache_l1_cache_invalidate_entire_instruction();
+
+ /* Enable the Instruction cache */
+ ctrl |= ARM_CP15_CTRL_I;
+
+ arm_cp15_set_control(ctrl);
+ }
+
+ rtems_interrupt_enable(level);
+}
+
+static inline void
+zynq_cache_l1_cache_disable_instruction(void)
+{
+ rtems_interrupt_level level;
+
+ rtems_interrupt_disable(level);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+
+ /* Invalidate the Instruction cache */
+ zynq_cache_l1_cache_invalidate_entire_instruction();
+
+ /* Disable the Instruction cache */
+ arm_cp15_set_control(arm_cp15_get_control() & ~ARM_CP15_CTRL_I);
+
+ rtems_interrupt_enable(level);
+}
+
+
+static inline void
+zynq_cache_l2_cache_flush_1_line(const void *d_addr)
+{
+ volatile L2CC* l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ l2cc->clean_inv_pa = (uint32_t)d_addr;
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l2_cache_flush_range(const void *d_addr, size_t n_bytes)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ if (n_bytes != 0) {
+ uint32_t adx = (uint32_t)d_addr;
+ const uint32_t end = adx + n_bytes;
+
+ /* Back starting address up to start of a line and flush until end */
+ for (adx &= ~(ZYNQ_L2_CACHE_LINE_SIZE - 1);
+ adx < end;
+ adx += ZYNQ_L2_CACHE_LINE_SIZE) {
+ l2cc->clean_inv_pa = adx;
+ }
+ }
+
+ /* Wait for L2 flush to complete */
+ while (l2cc->cache_sync != 0);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l2_cache_flush_entire(void)
+{
+ volatile L2CC* l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ /* Flush the caches */
+ l2cc->clean_inv_way = 0x0000FFFFU;
+
+ /* Wait for the flush to complete */
+ while (l2cc->cache_sync != 0);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l2_cache_invalidate_1_line(const void *d_addr)
+{
+ volatile L2CC* l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ l2cc->inv_pa = (uint32_t)d_addr;
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l2_cache_invalidate_range(const void* d_addr, size_t n_bytes)
+{
+ volatile L2CC* l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ if (n_bytes != 0) {
+ uint32_t adx = (uint32_t)d_addr;
+ const uint32_t end = adx + n_bytes;
+
+ /* Back starting address up to start of a line and invalidate until end */
+ for (adx &= ~(ZYNQ_L2_CACHE_LINE_SIZE - 1);
+ adx < end;
+ adx += ZYNQ_L2_CACHE_LINE_SIZE) {
+ l2cc->inv_pa = adx;
+ }
+ }
+
+ /* Wait for L2 invalidate to complete */
+ while (l2cc->cache_sync != 0);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l2_cache_invalidate_entire(void)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ /* Invalidate the caches */
+ l2cc->inv_way = 0xFFFFU;
+
+ /* Wait for the invalidate to complete */
+ while (l2cc->cache_sync != 0);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l2_cache_store(const void *d_addr)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ l2cc->clean_pa = (uint32_t)d_addr;
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+}
+
+static inline void
+zynq_cache_l2_cache_freeze(void)
+{
+ /* TODO */
+}
+
+static inline void
+zynq_cache_l2_cache_unfreeze(void)
+{
+ /* TODO */
+}
+
+static inline void
+zynq_cache_l2_cache_enable(void)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ /* Only enable if L2CC is currently disabled */
+ if ((l2cc->ctrl & L2CC_ENABLE_MASK) == 0) {
+ rtems_interrupt_level level;
+ uint32_t value;
+
+ rtems_interrupt_disable(level);
+
+ /* Set up the way size and latencies */
+ value = l2cc->aux_ctrl;
+ value &= L2CC_AUX_REG_ZERO_MASK;
+ value |= L2CC_AUX_REG_DEFAULT_MASK;
+ l2cc->aux_ctrl = value;
+ l2cc->tag_ram_ctrl = L2CC_TAG_RAM_DEFAULT_MASK;
+ l2cc->data_ram_ctrl = L2CC_DATA_RAM_DEFAULT_MASK;
+
+ /* Clear the pending interrupts */
+ l2cc->int_clr = l2cc->int_raw_status;
+
+ /* Enable the L2CC */
+ l2cc->ctrl |= L2CC_ENABLE_MASK;
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+
+ /* Enable the Data cache */
+ arm_cp15_set_control(arm_cp15_get_control() | ARM_CP15_CTRL_C);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+
+ rtems_interrupt_enable(level);
+ }
+}
+
+static inline void
+zynq_cache_l2_cache_disable(void)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ if (l2cc->ctrl & L2CC_ENABLE_MASK) {
+ rtems_interrupt_level level;
+ uint32_t ctrl;
+
+ rtems_interrupt_disable(level);
+
+ ctrl = arm_cp15_get_control();
+
+ /* Disable the L1 Data cache */
+ ctrl &= ~ARM_CP15_CTRL_C;
+
+ arm_cp15_set_control(ctrl);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+
+ /* Clean and Invalidate L2 Cache */
+ zynq_cache_l2_cache_flush_entire();
+
+ /* Disable the L2 cache */
+ l2cc->ctrl &= ~L2CC_ENABLE_MASK;
+
+ /* Enable the L1 Data cache */
+ ctrl |= ARM_CP15_CTRL_C;
+
+ arm_cp15_set_control(ctrl);
+
+ /* Synchronize the processor */
+ _ARM_Data_synchronization_barrier();
+
+ rtems_interrupt_enable(level);
+ }
+}
+
+
+static inline void
+_CPU_cache_enable_data(void)
+{
+ zynq_cache_l1_cache_enable_data();
+ zynq_cache_l2_cache_enable();
+}
+
+static inline void
+_CPU_cache_disable_data(void)
+{
+ zynq_cache_l1_cache_disable_data();
+ zynq_cache_l2_cache_disable();
+}
+
+static inline void
+_CPU_cache_enable_instruction(void)
+{
+ zynq_cache_l1_cache_enable_instruction();
+ zynq_cache_l2_cache_enable();
+}
+
+static inline void
+_CPU_cache_disable_instruction(void)
+{
+ zynq_cache_l1_cache_disable_instruction();
+ zynq_cache_l2_cache_disable();
+}
+
+static inline void
+_CPU_cache_flush_data_range(const void *d_addr, size_t n_bytes)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ if (n_bytes != 0) {
+ uint32_t adx = (uint32_t)d_addr;
+ const uint32_t end = adx + n_bytes;
+
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+
+ /* Back starting address up to start of a line and flush until end */
+ for (adx &= ~(CPU_DATA_CACHE_ALIGNMENT - 1);
+ adx < end;
+ adx += CPU_DATA_CACHE_ALIGNMENT) {
+ /* Flush L1 Data cache line */
+ arm_cp15_data_cache_clean_and_invalidate_line( (const void*)adx );
+
+ /* Flush L2 cache line */
+ l2cc->clean_inv_pa = adx;
+
+ _ARM_Data_synchronization_barrier();
+ }
+ }
+
+ /* Wait for L1 and L2 flush to complete */
+ _ARM_Data_synchronization_barrier();
+ while (l2cc->cache_sync != 0);
+}
+
+static inline void
+_CPU_cache_flush_entire_data(void)
+{
+ zynq_cache_l1_cache_flush_entire_data();
+ zynq_cache_l2_cache_flush_entire();
+}
+
+static inline void
+_CPU_cache_invalidate_data_range(const void *d_addr, size_t n_bytes)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ if (n_bytes != 0) {
+ uint32_t adx = (uint32_t)d_addr;
+ const uint32_t end = adx + n_bytes;
+
+ /* Select cache Level 1 and Data cache in CSSELR */
+ arm_cp15_set_cache_size_selection(0);
+
+ /* Back starting address up to start of a line and invalidate until end */
+ for (adx &= ~(CPU_DATA_CACHE_ALIGNMENT - 1);
+ adx < end;
+ adx += CPU_DATA_CACHE_ALIGNMENT) {
+ /* Invalidate L2 cache line */
+ l2cc->inv_pa = adx;
+ _ARM_Data_synchronization_barrier();
+
+ /* Invalidate L1 Data cache line */
+ arm_cp15_data_cache_invalidate_line( (const void *)adx );
+ }
+ }
+
+ /* Wait for L1 and L2 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+ while (l2cc->cache_sync != 0);
+}
+
+static inline void
+_CPU_cache_invalidate_entire_data(void)
+{
+ zynq_cache_l2_cache_invalidate_entire();
+ zynq_cache_l1_cache_invalidate_entire_data();
+}
+
+static inline void
+_CPU_cache_store_data_line(const void *d_addr)
+{
+ zynq_cache_l1_cache_store_data(d_addr);
+ zynq_cache_l2_cache_store(d_addr);
+}
+
+static inline void
+_CPU_cache_freeze_data(void)
+{
+ zynq_cache_l1_cache_freeze_data();
+ zynq_cache_l2_cache_freeze();
+}
+
+static inline void
+_CPU_cache_unfreeze_data(void)
+{
+ zynq_cache_l1_cache_unfreeze_data();
+ zynq_cache_l2_cache_unfreeze();
+}
+
+static inline void
+_CPU_cache_invalidate_instruction_range(const void *i_addr, size_t n_bytes)
+{
+ volatile L2CC *l2cc = (volatile L2CC *)L2CC_BASE_ADDR;
+
+ if (n_bytes != 0) {
+ uint32_t adx = (uint32_t)i_addr;
+ const uint32_t end = adx + n_bytes;
+
+ /* Select cache Level 1 and Instruction cache in CSSELR */
+ arm_cp15_set_cache_size_selection(1);
+
+ /* Back starting address up to start of a line and invalidate until end */
+ for (adx &= ~(CPU_INSTRUCTION_CACHE_ALIGNMENT - 1);
+ adx < end;
+ adx += CPU_INSTRUCTION_CACHE_ALIGNMENT) {
+ /* Invalidate L2 cache line */
+ l2cc->inv_pa = adx;
+ _ARM_Data_synchronization_barrier();
+
+ /* Invalidate L1 I-cache line */
+ arm_cp15_instruction_cache_invalidate_line( (const void *)adx );
+ }
+ }
+
+ /* Wait for L1 and L2 invalidate to complete */
+ _ARM_Data_synchronization_barrier();
+ while (l2cc->cache_sync != 0);
+}
+
+static inline void
+_CPU_cache_invalidate_entire_instruction(void)
+{
+ zynq_cache_l2_cache_invalidate_entire();
+ zynq_cache_l1_cache_invalidate_entire_instruction();
+}
+
+static inline void
+_CPU_cache_freeze_instruction(void)
+{
+ zynq_cache_l1_cache_freeze_instruction();
+ zynq_cache_l2_cache_freeze();
+}
+
+static inline void
+_CPU_cache_unfreeze_instruction(void)
+{
+ zynq_cache_l1_cache_unfreeze_instruction();
+ zynq_cache_l2_cache_unfreeze();
+}
+
+#endif /* LIBBSP_ARM_ZYNQ_CACHE__H */
diff --git a/c/src/lib/libcpu/shared/src/cache_manager.c b/c/src/lib/libcpu/shared/src/cache_manager.c
index 3d48364..69c422f 100644
--- a/c/src/lib/libcpu/shared/src/cache_manager.c
+++ b/c/src/lib/libcpu/shared/src/cache_manager.c
@@ -19,6 +19,11 @@
*
* rtems/c/src/lib/libcpu/CPU/cache_.h
*
+ * The cache implementation header file can define
+ * CPU_CACHE_SUPPORT_PROVIDES_RANGE_FUNCTIONS
+ * if it provides cache maintenance functions which operate on multiple lines.
+ * Otherwise a generic loop with single line operations will be used.
+ *
* The functions below are implemented with CPU dependent inline routines
* found in the cache.c files for each CPU. In the event that a CPU does
* not support a specific function for a cache it has, the CPU dependent
@@ -46,6 +51,9 @@ void
rtems_cache_flush_multiple_data_lines( const void * d_addr, size_t n_bytes )
{
#if defined(CPU_DATA_CACHE_ALIGNMENT)
+#if defined(CPU_CACHE_SUPPORT_PROVIDES_RANGE_FUNCTIONS)
+ _CPU_cache_flush_data_range( d_addr, n_bytes );
+#else
const void * final_address;
/*
@@ -65,6 +73,7 @@ rtems_cache_flush_multiple_data_lines( const void * d_addr, size_t n_bytes )
d_addr = (void *)((size_t)d_addr + CPU_DATA_CACHE_ALIGNMENT);
}
#endif
+#endif
}
@@ -78,6 +87,9 @@ void
rtems_cache_invalidate_multiple_data_lines( const void * d_addr, size_t n_bytes )
{
#if defined(CPU_DATA_CACHE_ALIGNMENT)
+#if defined(CPU_CACHE_SUPPORT_PROVIDES_RANGE_FUNCTIONS)
+ _CPU_cache_invalidate_data_range( d_addr, n_bytes );
+#else
const void * final_address;
/*
@@ -97,6 +109,7 @@ rtems_cache_invalidate_multiple_data_lines( const void * d_addr, size_t n_bytes
d_addr = (void *)((size_t)d_addr + CPU_DATA_CACHE_ALIGNMENT);
}
#endif
+#endif
}
@@ -204,7 +217,10 @@ rtems_cache_disable_data( void )
void
rtems_cache_invalidate_multiple_instruction_lines( const void * i_addr, size_t n_bytes )
{
-#if CPU_INSTRUCTION_CACHE_ALIGNMENT
+#if defined(CPU_INSTRUCTION_CACHE_ALIGNMENT)
+#if defined(CPU_CACHE_SUPPORT_PROVIDES_RANGE_FUNCTIONS)
+ _CPU_cache_invalidate_instruction_range( i_addr, n_bytes );
+#else
const void * final_address;
/*
@@ -224,6 +240,7 @@ rtems_cache_invalidate_multiple_instruction_lines( const void * i_addr, size_t n
i_addr = (void *)((size_t)i_addr + CPU_INSTRUCTION_CACHE_ALIGNMENT);
}
#endif
+#endif
}
More information about the vc
mailing list