WebMemory mapped using ioremap() has the following characteristics: Uncached - CPU-side caches are bypassed, and all reads and writes are handled directly by the device No … http://bbs.chinaunix.net/thread-3554853-1-1.html

ioremap_nocache identifier - Linux source code (v4.8) - Bootlin

Web30 mrt. 2006 · ioremap_cached () We currently have three ways for getting access to device memory -- ioremap (), ioremap_nocache () and pci_iomap (). 99% of the callers of … WebMessage ID: [email protected] (mailing list archive)State: New, archived: Headers: show csc levels in michigan

ioremap identifier - Linux source code (v6.2.10) - Bootlin

Web18 jan. 2024 · This is the role of the ioremap function. void *ioremap (unsigned long phys_addr, unsigned long size); void *ioremap_nocache (unsigned long phys_addr, unsigned long size); void iounmap (void * addr); The function is designed specifically to assign virtual addresses to I/O memory regions. WebThese arch-specific asm/io.h do not include . Some of them include , but ioremap_wt() is defined for consistency since they define all ioremap_xxx locally. ioremap_wt() is defined indentical to ioremap_nocache() to all architectures without WT support. frv and m68k already have ioremap_writethrough(). Web8 aug. 2013 · void *ioremap(unsigned long phys_addr, unsigned long size); メモ . LinuxカーネルはMMUをONにして仮想メモリ上で動作しているので物理アドレスにアクセス … csc less than 0