From 64b40ffbc83029f035571cad9727e34e69dbf6d0 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Fri, 9 Dec 2016 11:07:35 +1100 Subject: [PATCH] powerpc/pseries: Add hypercall wrappers for hash page table resizing This adds the hypercall numbers and wrapper functions for the hash page table resizing hypercalls. These hypercall numbers are defined in the PAPR ACR "HPT resizing option". It also adds a new firmware feature flag to track the presence of the HPT resizing calls. Signed-off-by: David Gibson Reviewed-by: Paul Mackerras Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/firmware.h | 5 +++-- arch/powerpc/include/asm/hvcall.h | 2 ++ arch/powerpc/include/asm/plpar_wrappers.h | 12 ++++++++++++ arch/powerpc/platforms/pseries/firmware.c | 1 + 4 files changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h index 1e0b5a5d660a..8645897472b1 100644 --- a/arch/powerpc/include/asm/firmware.h +++ b/arch/powerpc/include/asm/firmware.h @@ -42,7 +42,7 @@ #define FW_FEATURE_SPLPAR ASM_CONST(0x0000000000100000) #define FW_FEATURE_LPAR ASM_CONST(0x0000000000400000) #define FW_FEATURE_PS3_LV1 ASM_CONST(0x0000000000800000) -/* Free ASM_CONST(0x0000000001000000) */ +#define FW_FEATURE_HPT_RESIZE ASM_CONST(0x0000000001000000) #define FW_FEATURE_CMO ASM_CONST(0x0000000002000000) #define FW_FEATURE_VPHN ASM_CONST(0x0000000004000000) #define FW_FEATURE_XCMO ASM_CONST(0x0000000008000000) @@ -66,7 +66,8 @@ enum { FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR | FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO | FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY | - FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN, + FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN | + FW_FEATURE_HPT_RESIZE, FW_FEATURE_PSERIES_ALWAYS = 0, FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL, FW_FEATURE_POWERNV_ALWAYS = 0, diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 77ff1ba99d1f..490c4b9f4e3a 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -276,6 +276,8 @@ #define H_GET_MPP_X 0x314 #define H_SET_MODE 0x31C #define H_CLEAR_HPT 0x358 +#define H_RESIZE_HPT_PREPARE 0x36C +#define H_RESIZE_HPT_COMMIT 0x370 #define H_SIGNAL_SYS_RESET 0x380 #define MAX_HCALL_OPCODE H_SIGNAL_SYS_RESET diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h index 0bcc75e295e3..c7b164836bc3 100644 --- a/arch/powerpc/include/asm/plpar_wrappers.h +++ b/arch/powerpc/include/asm/plpar_wrappers.h @@ -210,6 +210,18 @@ static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex, return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn); } +static inline long plpar_resize_hpt_prepare(unsigned long flags, + unsigned long shift) +{ + return plpar_hcall_norets(H_RESIZE_HPT_PREPARE, flags, shift); +} + +static inline long plpar_resize_hpt_commit(unsigned long flags, + unsigned long shift) +{ + return plpar_hcall_norets(H_RESIZE_HPT_COMMIT, flags, shift); +} + static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba, unsigned long *tce_ret) { diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c index ea7f09bd73b1..658c02df2f36 100644 --- a/arch/powerpc/platforms/pseries/firmware.c +++ b/arch/powerpc/platforms/pseries/firmware.c @@ -64,6 +64,7 @@ hypertas_fw_features_table[] = { {FW_FEATURE_VPHN, "hcall-vphn"}, {FW_FEATURE_SET_MODE, "hcall-set-mode"}, {FW_FEATURE_BEST_ENERGY, "hcall-best-energy-1*"}, + {FW_FEATURE_HPT_RESIZE, "hcall-hpt-resize"}, }; /* Build up the firmware features bitmask using the contents of -- 2.20.1