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Commit 18911bf3 authored by Victor Kamensky's avatar Victor Kamensky Committed by Neil Leeder
Browse files

ARM: cci driver need big endian fixes in asm code 



cci_enable_port_for_self written in asm and it works with h/w
registers that are in little endian format. When run in big
endian mode it needs byteswaped constants before/after it
writes/reads to/from such registers

Change-Id: Ib705c302e5dce56318ea6d63f36b4c153f0a9fef
Signed-off-by: default avatarVictor Kamensky <victor.kamensky@linaro.org>
Acked-by: default avatarNicolas Pitre <nico@linaro.org>
Signed-off-by: default avatarBen Dooks <ben.dooks@codethink.co.uk>
Git-commit: fdb07aee0b2b9d7d1893c97f5ce79ec355caaf1f
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: default avatarNeil Leeder <nleeder@codeaurora.org>
parent 81bddcab

drivers/bus/arm-cci.c

+4 −2
Original line number Diff line number Diff line
@@ -852,7 +852,7 @@ asmlinkage void __naked cci_enable_port_for_self(void) 


	/* Enable the CCI port */

"	ldr	r0, [r0, %[offsetof_port_phys]] \n"

"	mov	r3, #"__stringify(CCI_ENABLE_REQ)" \n"

"	mov	r3, %[cci_enable_req]\n"		   

"	str	r3, [r0, #"__stringify(CCI_PORT_CTRL)"] \n"



	/* poll the status reg for completion */
@@ -860,7 +860,7 @@ asmlinkage void __naked cci_enable_port_for_self(void) 
"	ldr	r0, [r1] \n"

"	ldr	r0, [r0, r1]		@ cci_ctrl_base \n"

"4:	ldr	r1, [r0, #"__stringify(CCI_CTRL_STATUS)"] \n"

"	tst	r1, #1 \n"

"	tst	r1, %[cci_control_status_bits] \n"			

"	bne	4b \n"



"	mov	r0, #0 \n"
@@ -873,6 +873,8 @@ asmlinkage void __naked cci_enable_port_for_self(void) 
"7:	.word	cci_ctrl_phys - . \n"

	: :

	[sizeof_cpu_port] "i" (sizeof(cpu_port)),

	[cci_enable_req] "i" cpu_to_le32(CCI_ENABLE_REQ),

	[cci_control_status_bits] "i" cpu_to_le32(1),

#ifndef __ARMEB__

	[offsetof_cpu_port_mpidr_lsb] "i" (offsetof(struct cpu_port, mpidr)),

#else