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Commit d8f48ecc authored by Ian Munsie's avatar Ian Munsie Committed by Benjamin Herrenschmidt
Browse files

powerpc: Add set_mode hcall 



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: default avatarIan Munsie <imunsie@au1.ibm.com>
Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent b0302722

arch/powerpc/include/asm/firmware.h

+3 −1
Original line number Diff line number Diff line
@@ -49,6 +49,7 @@ 
#define FW_FEATURE_XCMO		ASM_CONST(0x0000000008000000)

#define FW_FEATURE_OPAL		ASM_CONST(0x0000000010000000)

#define FW_FEATURE_OPALv2	ASM_CONST(0x0000000020000000)

#define FW_FEATURE_SET_MODE	ASM_CONST(0x0000000040000000)



#ifndef __ASSEMBLY__
@@ -62,7 +63,8 @@ enum { 
		FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |

		FW_FEATURE_BULK_REMOVE | FW_FEATURE_XDABR |

		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_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_OPALv2,

	FW_FEATURE_POWERNV_ALWAYS = 0,

arch/powerpc/include/asm/hvcall.h

+2 −1
Original line number Diff line number Diff line
@@ -267,7 +267,8 @@ 
#define H_RANDOM		0x300

#define H_COP			0x304

#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__

arch/powerpc/platforms/pseries/firmware.c

+1 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ firmware_features_table[FIRMWARE_MAX_FEATURES] = { 
	{FW_FEATURE_MULTITCE,		"hcall-multi-tce"},

	{FW_FEATURE_SPLPAR,		"hcall-splpar"},

	{FW_FEATURE_VPHN,		"hcall-vphn"},

	{FW_FEATURE_SET_MODE,		"hcall-set-mode"},

};



/* Build up the firmware features bitmask using the contents of

arch/powerpc/platforms/pseries/plpar_wrappers.h

+6 −0
Original line number Diff line number Diff line
@@ -273,4 +273,10 @@ static inline long plpar_put_term_char(unsigned long termno, unsigned long len, 
			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 */