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powerpc: Add set_mode hcall

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This new hcall in POWER8 is used to set various resource mode registers.
eg. it can set address translation mode on interrupt (note: partition wide
scope)

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Ian Munsie 2012-11-06 16:15:17 +11:00 committed by Benjamin Herrenschmidt
parent b0302722ee
commit d8f48ecc0e
4 changed files with 12 additions and 2 deletions
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4
arch/powerpc/include/asm/firmware.h
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@ -49,6 +49,7 @@
#define FW_FEATURE_XCMO ASM_CONST(0x0000000008000000) #define FW_FEATURE_XCMO ASM_CONST(0x0000000008000000)
#define FW_FEATURE_OPAL ASM_CONST(0x0000000010000000) #define FW_FEATURE_OPAL ASM_CONST(0x0000000010000000)
#define FW_FEATURE_OPALv2 ASM_CONST(0x0000000020000000) #define FW_FEATURE_OPALv2 ASM_CONST(0x0000000020000000)
#define FW_FEATURE_SET_MODE ASM_CONST(0x0000000040000000)
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
@ -62,7 +63,8 @@ enum {
FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN | FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
FW_FEATURE_BULK_REMOVE | FW_FEATURE_XDABR | FW_FEATURE_BULK_REMOVE | FW_FEATURE_XDABR |
FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR | FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO, FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
FW_FEATURE_SET_MODE,
FW_FEATURE_PSERIES_ALWAYS = 0, FW_FEATURE_PSERIES_ALWAYS = 0,
FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_OPALv2, FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_OPALv2,
FW_FEATURE_POWERNV_ALWAYS = 0, FW_FEATURE_POWERNV_ALWAYS = 0,

3
arch/powerpc/include/asm/hvcall.h
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@ -267,7 +267,8 @@
#define H_RANDOM 0x300 #define H_RANDOM 0x300
#define H_COP 0x304 #define H_COP 0x304
#define H_GET_MPP_X 0x314 #define H_GET_MPP_X 0x314
#define MAX_HCALL_OPCODE H_GET_MPP_X #define H_SET_MODE 0x31C
#define MAX_HCALL_OPCODE H_SET_MODE
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__

1
arch/powerpc/platforms/pseries/firmware.c
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@ -56,6 +56,7 @@ firmware_features_table[FIRMWARE_MAX_FEATURES] = {
{FW_FEATURE_MULTITCE, "hcall-multi-tce"}, {FW_FEATURE_MULTITCE, "hcall-multi-tce"},
{FW_FEATURE_SPLPAR, "hcall-splpar"}, {FW_FEATURE_SPLPAR, "hcall-splpar"},
{FW_FEATURE_VPHN, "hcall-vphn"}, {FW_FEATURE_VPHN, "hcall-vphn"},
{FW_FEATURE_SET_MODE, "hcall-set-mode"},
}; };
/* Build up the firmware features bitmask using the contents of /* Build up the firmware features bitmask using the contents of

6
arch/powerpc/platforms/pseries/plpar_wrappers.h
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@ -273,4 +273,10 @@ static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
lbuf[1]); lbuf[1]);
} }
/* Set various resource mode parameters */
static inline long plpar_set_mode(unsigned long mflags, unsigned long resource,
unsigned long value1, unsigned long value2)
{
return plpar_hcall_norets(H_SET_MODE, mflags, resource, value1, value2);
}
#endif /* _PSERIES_PLPAR_WRAPPERS_H */ #endif /* _PSERIES_PLPAR_WRAPPERS_H */