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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-09-20 16:56:03 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-09-20 23:25:01 -0500 |
| commit | 5e09fe1f19d3f56b1cebb44439da5b5de6e1fccd (patch) | |
| tree | 159d5c1c26a8068df3ec6cc623f5db7e3bfa8310 /include | |
| parent | 5779c11fdc57c4dc474beb00f044f34ec1c58368 (diff) | |
| download | skiboot-5e09fe1f19d3f56b1cebb44439da5b5de6e1fccd.zip skiboot-5e09fe1f19d3f56b1cebb44439da5b5de6e1fccd.tar.gz skiboot-5e09fe1f19d3f56b1cebb44439da5b5de6e1fccd.tar.bz2 | |
core: POWER9 implement OPAL_SIGNAL_SYSTEM_RESET
This implements OPAL_SIGNAL_SYSTEM_RESET, using scom registers to
quiesce the target thread and raise a system reset exception on it.
It has been tested on DD2 with stop0 ESL=0 and ESL=1 shallow power
saving modes.
DD1 is not implemented because it is sufficiently different as to
make support difficult.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[stewart@linux.vnet.ibm.com: fixup hdat_to_dt test]
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/cpu.h | 7 | ||||
| -rw-r--r-- | include/processor.h | 15 | ||||
| -rw-r--r-- | include/skiboot.h | 4 |
3 files changed, 26 insertions, 0 deletions
diff --git a/include/cpu.h b/include/cpu.h index fd3acf7..1b622a5 100644 --- a/include/cpu.h +++ b/include/cpu.h @@ -95,6 +95,13 @@ struct cpu_thread { /* For use by XICS emulation on XIVE */ struct xive_cpu_state *xstate; + + /* + * For direct controls scoms, including special wakeup. + */ + struct lock dctl_lock; /* primary only */ + bool dctl_stopped; /* per thread */ + uint32_t special_wakeup_count; /* primary */ }; /* This global is set to 1 to allow secondaries to callin, diff --git a/include/processor.h b/include/processor.h index 2e1ac37..da48304 100644 --- a/include/processor.h +++ b/include/processor.h @@ -206,6 +206,21 @@ #include <compiler.h> #include <stdint.h> +#include <stdbool.h> + +static inline bool is_power9n(uint32_t version) +{ + if (PVR_TYPE(version) != PVR_TYPE_P9) + return false; + /* + * Bit 13 tells us: + * 0 = Scale out (aka Nimbus) + * 1 = Scale up (aka Cumulus) + */ + if ((version >> 13) & 1) + return false; + return true; +} /* * SMT priority diff --git a/include/skiboot.h b/include/skiboot.h index 3040c51..a32af6a 100644 --- a/include/skiboot.h +++ b/include/skiboot.h @@ -205,6 +205,10 @@ extern char __sym_map_end[]; extern unsigned long get_symbol(unsigned long addr, char **sym, char **sym_end); +/* Direct controls */ +extern void direct_controls_init(void); +extern int64_t opal_signal_system_reset(int cpu_nr); + /* Fast reboot support */ extern void disable_fast_reboot(const char *reason); extern void fast_reboot(void); |