invalidate_d_cache参数的作用就是确保缓存中的数据与实际磁盘上的数据保持一致,从而避免数据的不一致性。 在Linux系统中,可以通过修改系统的内核参数来配置invalidate_d_cache参数。通常情况下,invalidate_d_cache参数的值默认为"on",表示启用磁盘缓存失效。但是,在一些特殊情况下,需要禁用磁盘缓存失效,这时可以将...
invalidate_dcache_range函数是一个在嵌入式系统和操作系统中常用的函数,特别是在涉及到直接内存访问(DMA)操作时。以下是关于invalidate_dcache_range函数的详细解释: 1. invalidate_dcache_range函数的作用invalidate_dcache_range函数用于使指定范围内的数据缓存(D-cache)中的数据无效。这意味着CPU在访问这些内存地址...
*/invalidate_dcache_range(desc_start, desc_end);/* Check if the descriptor is owned by CPU */if(desc_p->txrx_status & DESC_TXSTS_OWNBYDMA) {printf("CPU not owner of tx frame\n");return-EPERM; }memcpy((void*)data_start, packet, length);/* Flush data to be sent */flush_dca...
在sdk调试ddr的时候,想要使用memory窗口观察写入情况,需要使用到Xil_DCacheInvalidateRange函数无效化数据缓存,memory窗口才能刷新最新的数据。 Xil_DCacheInvalidateRange 这个函数用于无效化指定范围内的数据缓存。当你无效化缓存时,缓存中的数据将被标记为无效,但是并不会写回主存储器。这在你确定缓存中的数据已经过时...
I am using AXI DMA in 2016.3 to transfer test data from custom IP in PL to zynq PS memory. When the DMA completes, I use Xil_DCacheInvalidateRange() on the destination buffer, and then check the data values for correctness. I find that unless I disable t
spin_unlock(&dcache_lock);if(!empty)d_invalidate(dentry); nd.flags = LOOKUP_DIRECTORY; status = (dentry->d_op->d_revalidate)(dentry, &nd);if(!status)return-ENOENT; }if(d_mountpoint(dentry)) {structfile*fp=NULL;structvfsmount*fp_mnt=mntget(mnt);structdentry*fp_dentry=dget(dentry)...
60671 - 2014.1 SDK: BSP standalone v4.0 Xil_DCacheInvalidateRange boundary check issues cause more cachelines to be invalidated Description This issue arises in the standalone_v4_0 BSP in Vivado Design Suite 2014.1. The "Xil_DCacheInvalidateRange" API in src/cortexa9/xil_cache.c is invalida...
1. Yes, You are using the correct library files for cache maintanance operations. 2. Ok. By default, system config library is not built with VFP support. You may rebuild and check the same 3. There is an issue in the APIs CP15DCacheCleanBuff and CP15DCacheFlushBuff, which are interna...
2 changes: 1 addition & 1 deletion 2 arch/riscv/lib/cache.c Original file line numberDiff line numberDiff line change @@ -19,7 +19,7 @@ __weak void flush_dcache_range(unsigned long start, unsigned long end) { } void invalidate_icache_range(unsigned long start, unsigned long end...
orca_flush_dcache_range((void *)base_to_flush, (void *)last_to_flush); //Write initial test pattern for(int word = 0; word < (cache_size/sizeof(uint32_t)); word++){ mem_base32[word] = 0-word; } //Flush/invalidate and overwrite the range to test if(invalidate){ orca_invali...