diff options
| -rw-r--r-- | hw/xive2.c | 27 |
1 files changed, 24 insertions, 3 deletions
@@ -20,6 +20,7 @@ #include <bitmap.h> #include <buddy.h> #include <phys-map.h> +#include <p10_stop_api.H> /* Verbose debug */ @@ -3013,10 +3014,30 @@ static void xive_configure_ex_special_bar(struct xive *x, struct cpu_thread *c) void xive2_late_init(void) { + struct cpu_thread *c; + prlog(PR_INFO, "SLW: Configuring self-restore for NCU_SPEC_BAR\n"); - /* - * TODO (p10): need P10 stop state engine and fix for STOP11 - */ + for_each_present_cpu(c) { + if(cpu_is_thread0(c)) { + struct proc_chip *chip = get_chip(c->chip_id); + struct xive *x = chip->xive; + uint64_t xa, val, rc; + xa = XSCOM_ADDR_P10_NCU(pir_to_core_id(c->pir), P10_NCU_SPEC_BAR); + val = (uint64_t)x->tm_base | P10_NCU_SPEC_BAR_ENABLE; + /* Bail out if wakeup engine has already failed */ + if (wakeup_engine_state != WAKEUP_ENGINE_PRESENT) { + prlog(PR_ERR, "XIVE proc_stop_api fail detected\n"); + break; + } + rc = proc_stop_save_scom((void *)chip->homer_base, xa, val, + PROC_STOP_SCOM_REPLACE, PROC_STOP_SECTION_L3); + if (rc) { + xive_cpu_err(c, "proc_stop_save_scom failed for NCU_SPEC_BAR rc=%lld\n", + rc); + wakeup_engine_state = WAKEUP_ENGINE_FAILED; + } + } + } } static void xive_provision_cpu(struct xive_cpu_state *xs, struct cpu_thread *c) |