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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2019-02-15 17:16:41 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2019-02-26 09:21:24 +1100 |
| commit | 21c0d66a9c994c7a406f8a6d04a81c16332e0cb8 (patch) | |
| tree | 0d1b07c7487dac2d856c7f4ca1078f9ca081b38d /target/ppc/cpu.h | |
| parent | 3621e2c96082c6e5094dfec244077a135383d538 (diff) | |
| download | qemu-21c0d66a9c994c7a406f8a6d04a81c16332e0cb8.zip qemu-21c0d66a9c994c7a406f8a6d04a81c16332e0cb8.tar.gz qemu-21c0d66a9c994c7a406f8a6d04a81c16332e0cb8.tar.bz2 | |
target/ppc: Fix support for "STOP light" states on POWER9
STOP must act differently based on PSSCR:EC on POWER9. When set, it
acts like the P7/P8 power management instructions and wake up at 0x100
based on the wakeup conditions in LPCR.
When PSSCR:EC is clear however it will wakeup at the next instruction
after STOP (if EE is clear) or take the corresponding interrupts (if
EE is set).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20190215161648.9600-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target/ppc/cpu.h')
| -rw-r--r-- | target/ppc/cpu.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index 325ebbe..5b1899b 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -414,6 +414,10 @@ struct ppc_slb_t { #define LPCR_HVICE PPC_BIT(62) /* HV Virtualisation Int Enable */ #define LPCR_HDICE PPC_BIT(63) +/* PSSCR bits */ +#define PSSCR_ESL PPC_BIT(42) /* Enable State Loss */ +#define PSSCR_EC PPC_BIT(43) /* Exit Criterion */ + #define msr_sf ((env->msr >> MSR_SF) & 1) #define msr_isf ((env->msr >> MSR_ISF) & 1) #define msr_shv ((env->msr >> MSR_SHV) & 1) @@ -1110,9 +1114,11 @@ struct CPUPPCState { * instructions and SPRs are diallowed if MSR:HV is 0 */ bool has_hv_mode; - /* On P7/P8, set when in PM state, we need to handle resume - * in a special way (such as routing some resume causes to - * 0x100), so flag this here. + + /* + * On P7/P8/P9, set when in PM state, we need to handle resume in + * a special way (such as routing some resume causes to 0x100), so + * flag this here. */ bool in_pm_state; #endif |