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ARM: cci driver need big endian fixes in asm code

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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

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
This commit is contained in:
Victor Kamensky 2013-10-15 21:50:34 -07:00 committed by Ben Dooks
parent a1af347448
commit fdb07aee0b
1 changed files with 4 additions and 2 deletions
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6
drivers/bus/arm-cci.c
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@ -280,7 +280,7 @@ 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 */
@ -288,7 +288,7 @@ 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"
@ -301,6 +301,8 @@ 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