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| author | Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> | 2017-08-28 23:23:40 -0700 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-31 14:26:38 +1000 |
| commit | 2392c8c8c0450293625dbef19ff5e206fb7b6749 (patch) | |
| tree | c8a7b1d865bd487b168e226fd5c78c3aecb684ee /arch/powerpc/include | |
| parent | 5239af679a07427647b009ebb9c70b1a03ebca9b (diff) | |
| download | linux-stable-2392c8c8c0450293625dbef19ff5e206fb7b6749.tar.gz linux-stable-2392c8c8c0450293625dbef19ff5e206fb7b6749.tar.bz2 linux-stable-2392c8c8c0450293625dbef19ff5e206fb7b6749.zip | |
powerpc/powernv/vas: Define copy/paste interfaces
Define interfaces (wrappers) to the 'copy' and 'paste'
instructions (which are new in PowerISA 3.0). These are intended to be
used to by NX driver(s) to submit Coprocessor Request Blocks (CRBs) to
the NX hardware engines.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/ppc-opcode.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/vas.h | 12 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 041ba15aa2b9..b5e1b51b8ba9 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -418,6 +418,8 @@ ___PPC_RB(b)) #define PPC_MSGCLRP(b) stringify_in_c(.long PPC_INST_MSGCLRP | \ ___PPC_RB(b)) +#define PPC_PASTE(a, b) stringify_in_c(.long PPC_INST_PASTE | \ + ___PPC_RA(a) | ___PPC_RB(b)) #define PPC_POPCNTB(a, s) stringify_in_c(.long PPC_INST_POPCNTB | \ __PPC_RA(a) | __PPC_RS(s)) #define PPC_POPCNTD(a, s) stringify_in_c(.long PPC_INST_POPCNTD | \ diff --git a/arch/powerpc/include/asm/vas.h b/arch/powerpc/include/asm/vas.h index 033461c17637..fd5963acd658 100644 --- a/arch/powerpc/include/asm/vas.h +++ b/arch/powerpc/include/asm/vas.h @@ -144,4 +144,16 @@ struct vas_window *vas_tx_win_open(int vasid, enum vas_cop_type cop, */ int vas_win_close(struct vas_window *win); +/* + * Copy the co-processor request block (CRB) @crb into the local L2 cache. + */ +int vas_copy_crb(void *crb, int offset); + +/* + * Paste a previously copied CRB (see vas_copy_crb()) from the L2 cache to + * the hardware address associated with the window @win. @re is expected/ + * assumed to be true for NX windows. + */ +int vas_paste_crb(struct vas_window *win, int offset, bool re); + #endif /* __ASM_POWERPC_VAS_H */ |