arch/microblaze/kernel/cpu/cache.c

Source file repositories/reference/linux-study-clean/arch/microblaze/kernel/cpu/cache.c

File Facts

System
Linux kernel
Corpus path
arch/microblaze/kernel/cpu/cache.c
Extension
.c
Size
16973 bytes
Lines
657
Domain
Architecture Layer
Bucket
arch/microblaze
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

if (cpuinfo.dcache_wb) {
			pr_info("wb_msr\n");
			mbc = (struct scache *)&wb_msr;
			if (cpuinfo.ver_code <= CPUVER_7_20_D) {
				/* MS: problem with signal handling - hw bug */
				pr_info("WB won't work properly\n");
			}
		} else {
			if (cpuinfo.ver_code >= CPUVER_7_20_A) {
				pr_info("wt_msr_noirq\n");
				mbc = (struct scache *)&wt_msr_noirq;
			} else {
				pr_info("wt_msr\n");
				mbc = (struct scache *)&wt_msr;
			}
		}
	} else {
		if (cpuinfo.dcache_wb) {
			pr_info("wb_nomsr\n");
			mbc = (struct scache *)&wb_nomsr;
			if (cpuinfo.ver_code <= CPUVER_7_20_D) {
				/* MS: problem with signal handling - hw bug */
				pr_info("WB won't work properly\n");
			}
		} else {
			if (cpuinfo.ver_code >= CPUVER_7_20_A) {
				pr_info("wt_nomsr_noirq\n");
				mbc = (struct scache *)&wt_nomsr_noirq;
			} else {
				pr_info("wt_nomsr\n");
				mbc = (struct scache *)&wt_nomsr;
			}
		}
	}
	/*
	 * FIXME Invalidation is done in U-BOOT
	 * WT cache: Data is already written to main memory
	 * WB cache: Discard data on noMMU which caused that kernel doesn't boot
	 */
	/* invalidate_dcache(); */
	enable_dcache();

	invalidate_icache();
	enable_icache();
}

Annotation

Implementation Notes