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Commit 44e4e196 authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: Fix cache_line_lenght 



We used cache_line as cache_line_lenght. For this reason
we did cache flushing 4 times longer than was necessary.

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 6cec713b

arch/microblaze/include/asm/cpuinfo.h

+2 −2
Original line number Diff line number Diff line
@@ -43,7 +43,7 @@ struct cpuinfo { 
	u32 use_icache;

	u32 icache_tagbits;

	u32 icache_write;

	u32 icache_line;

	u32 icache_line_length;

	u32 icache_size;

	unsigned long icache_base;

	unsigned long icache_high;
@@ -51,7 +51,7 @@ struct cpuinfo { 
	u32 use_dcache;

	u32 dcache_tagbits;

	u32 dcache_write;

	u32 dcache_line;

	u32 dcache_line_length;

	u32 dcache_size;

	unsigned long dcache_base;

	unsigned long dcache_high;

arch/microblaze/kernel/cpu/cache.c

+8 −8
Original line number Diff line number Diff line
@@ -140,7 +140,7 @@ void __invalidate_icache_all(void) 
		/* Just loop through cache size and invalidate, no need to add

			CACHE_BASE address */

		for (i = 0; i < cpuinfo.icache_size;

			i += cpuinfo.icache_line)

			i += cpuinfo.icache_line_length)

				__invalidate_icache(i);



		__enable_icache();
@@ -160,15 +160,15 @@ void __invalidate_icache_range(unsigned long start, unsigned long end) 
		 * just cover cache footprint

		 */

		end = min(start + cpuinfo.icache_size, end);

		align = ~(cpuinfo.icache_line - 1);

		align = ~(cpuinfo.icache_line_length - 1);

		start &= align; /* Make sure we are aligned */

		/* Push end up to the next cache line */

		end = ((end & align) + cpuinfo.icache_line);

		end = ((end & align) + cpuinfo.icache_line_length);



		local_irq_save(flags);

		__disable_icache();



		for (i = start; i < end; i += cpuinfo.icache_line)

		for (i = start; i < end; i += cpuinfo.icache_line_length)

			__invalidate_icache(i);



		__enable_icache();
@@ -207,7 +207,7 @@ void __invalidate_dcache_all(void) 
		 * no need to add CACHE_BASE address

		 */

		for (i = 0; i < cpuinfo.dcache_size;

			i += cpuinfo.dcache_line)

			i += cpuinfo.dcache_line_length)

				__invalidate_dcache(i);



		__enable_dcache();
@@ -227,14 +227,14 @@ void __invalidate_dcache_range(unsigned long start, unsigned long end) 
		 * just cover cache footprint

		 */

		end = min(start + cpuinfo.dcache_size, end);

		align = ~(cpuinfo.dcache_line - 1);

		align = ~(cpuinfo.dcache_line_length - 1);

		start &= align; /* Make sure we are aligned */

		/* Push end up to the next cache line */

		end = ((end & align) + cpuinfo.dcache_line);

		end = ((end & align) + cpuinfo.dcache_line_length);

		local_irq_save(flags);

		__disable_dcache();



		for (i = start; i < end; i += cpuinfo.dcache_line)

		for (i = start; i < end; i += cpuinfo.dcache_line_length)

			__invalidate_dcache(i);



		__enable_dcache();

arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c

+2 −2
Original line number Diff line number Diff line
@@ -70,7 +70,7 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu) 
	CI(use_icache, USE_ICACHE);

	CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);

	CI(icache_write, ICACHE_ALLOW_WR);

	CI(icache_line, ICACHE_LINE_LEN);

	ci->icache_line_length = PVR_ICACHE_LINE_LEN(pvr) << 2;

	CI(icache_size, ICACHE_BYTE_SIZE);

	CI(icache_base, ICACHE_BASEADDR);

	CI(icache_high, ICACHE_HIGHADDR);
@@ -78,7 +78,7 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu) 
	CI(use_dcache, USE_DCACHE);

	CI(dcache_tagbits, DCACHE_ADDR_TAG_BITS);

	CI(dcache_write, DCACHE_ALLOW_WR);

	CI(dcache_line, DCACHE_LINE_LEN);

	ci->dcache_line_length = PVR_DCACHE_LINE_LEN(pvr) << 2;

	CI(dcache_size, DCACHE_BYTE_SIZE);

	CI(dcache_base, DCACHE_BASEADDR);

	CI(dcache_high, DCACHE_HIGHADDR);

arch/microblaze/kernel/cpu/cpuinfo-static.c

+8 −8
Original line number Diff line number Diff line
@@ -72,12 +72,12 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu) 
	ci->use_icache = fcpu(cpu, "xlnx,use-icache");

	ci->icache_tagbits = fcpu(cpu, "xlnx,addr-tag-bits");

	ci->icache_write = fcpu(cpu, "xlnx,allow-icache-wr");

	ci->icache_line = fcpu(cpu, "xlnx,icache-line-len") << 2;

	if (!ci->icache_line) {

	ci->icache_line_length = fcpu(cpu, "xlnx,icache-line-len") << 2;

	if (!ci->icache_line_length) {

		if (fcpu(cpu, "xlnx,icache-use-fsl"))

			ci->icache_line = 4 << 2;

			ci->icache_line_length = 4 << 2;

		else

			ci->icache_line = 1 << 2;

			ci->icache_line_length = 1 << 2;

	}

	ci->icache_size = fcpu(cpu, "i-cache-size");

	ci->icache_base = fcpu(cpu, "i-cache-baseaddr");
@@ -86,12 +86,12 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu) 
	ci->use_dcache = fcpu(cpu, "xlnx,use-dcache");

	ci->dcache_tagbits = fcpu(cpu, "xlnx,dcache-addr-tag");

	ci->dcache_write = fcpu(cpu, "xlnx,allow-dcache-wr");

	ci->dcache_line = fcpu(cpu, "xlnx,dcache-line-len") << 2;

	if (!ci->dcache_line) {

	ci->dcache_line_length = fcpu(cpu, "xlnx,dcache-line-len") << 2;

	if (!ci->dcache_line_length) {

		if (fcpu(cpu, "xlnx,dcache-use-fsl"))

			ci->dcache_line = 4 << 2;

			ci->dcache_line_length = 4 << 2;

		else

			ci->dcache_line = 1 << 2;

			ci->dcache_line_length = 1 << 2;

	}

	ci->dcache_size = fcpu(cpu, "d-cache-size");

	ci->dcache_base = fcpu(cpu, "d-cache-baseaddr");