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| author | Dave Jones <davej@redhat.com> | 2006-12-12 17:41:41 -0500 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2006-12-12 17:41:41 -0500 |
| commit | c4366889dda8110247be59ca41fddb82951a8c26 (patch) | |
| tree | 705c1a996bed8fd48ce94ff33ec9fd00f9b94875 /arch/powerpc/sysdev/dcr-low.S | |
| parent | db2fb9db5735cc532fd4fc55e94b9a3c3750378e (diff) | |
| parent | e1036502e5263851259d147771226161e5ccc85a (diff) | |
| download | op-kernel-dev-c4366889dda8110247be59ca41fddb82951a8c26.zip op-kernel-dev-c4366889dda8110247be59ca41fddb82951a8c26.tar.gz | |
Merge ../linus
Conflicts:
drivers/cpufreq/cpufreq.c
Diffstat (limited to 'arch/powerpc/sysdev/dcr-low.S')
| -rw-r--r-- | arch/powerpc/sysdev/dcr-low.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/dcr-low.S b/arch/powerpc/sysdev/dcr-low.S new file mode 100644 index 0000000..2078f39 --- /dev/null +++ b/arch/powerpc/sysdev/dcr-low.S @@ -0,0 +1,39 @@ +/* + * "Indirect" DCR access + * + * Copyright (c) 2004 Eugene Surovegin <ebs@ebshome.net> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <asm/ppc_asm.h> +#include <asm/processor.h> + +#define DCR_ACCESS_PROLOG(table) \ + rlwinm r3,r3,4,18,27; \ + lis r5,table@h; \ + ori r5,r5,table@l; \ + add r3,r3,r5; \ + mtctr r3; \ + bctr + +_GLOBAL(__mfdcr) + DCR_ACCESS_PROLOG(__mfdcr_table) + +_GLOBAL(__mtdcr) + DCR_ACCESS_PROLOG(__mtdcr_table) + +__mfdcr_table: + mfdcr r3,0; blr +__mtdcr_table: + mtdcr 0,r4; blr + +dcr = 1 + .rept 1023 + mfdcr r3,dcr; blr + mtdcr dcr,r4; blr + dcr = dcr + 1 + .endr |
