From e2af155c2aea0e705ed4ef33aedc25e50a788be1 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Mon, 27 Feb 2012 20:03:54 +0000 Subject: [PATCH] powerpc/eeh: pseries platform EEH initialization The platform specific EEH operations have been abstracted by struct eeh_ops. The individual platroms, including pSeries, needs doing necessary initialization before the platform dependent EEH operations work properly. The patch is addressing that and do necessary platform initialization for pSeries platform. More specificly, it will figure out the tokens of EEH related RTAS calls. Signed-off-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/eeh.c | 12 +++++ arch/powerpc/platforms/pseries/eeh_pseries.c | 55 ++++++++++++++++++++ 2 files changed, 67 insertions(+) diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index b0e3fb0b32a5..bb6de6c97911 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -1279,6 +1279,18 @@ void __init eeh_init(void) { struct device_node *phb, *np; struct eeh_early_enable_info info; + int ret; + + /* call platform initialization function */ + if (!eeh_ops) { + pr_warning("%s: Platform EEH operation not found\n", + __func__); + return; + } else if ((ret = eeh_ops->init())) { + pr_warning("%s: Failed to call platform init function (%d)\n", + __func__, ret); + return; + } raw_spin_lock_init(&confirm_error_lock); spin_lock_init(&slot_errbuf_lock); diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 61a9050ba969..1a9410a2d452 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -45,6 +45,17 @@ #include #include +/* RTAS tokens */ +static int ibm_set_eeh_option; +static int ibm_set_slot_reset; +static int ibm_read_slot_reset_state; +static int ibm_read_slot_reset_state2; +static int ibm_slot_error_detail; +static int ibm_get_config_addr_info; +static int ibm_get_config_addr_info2; +static int ibm_configure_bridge; +static int ibm_configure_pe; + /** * pseries_eeh_init - EEH platform dependent initialization * @@ -52,6 +63,50 @@ */ static int pseries_eeh_init(void) { + /* figure out EEH RTAS function call tokens */ + ibm_set_eeh_option = rtas_token("ibm,set-eeh-option"); + ibm_set_slot_reset = rtas_token("ibm,set-slot-reset"); + ibm_read_slot_reset_state2 = rtas_token("ibm,read-slot-reset-state2"); + ibm_read_slot_reset_state = rtas_token("ibm,read-slot-reset-state"); + ibm_slot_error_detail = rtas_token("ibm,slot-error-detail"); + ibm_get_config_addr_info2 = rtas_token("ibm,get-config-addr-info2"); + ibm_get_config_addr_info = rtas_token("ibm,get-config-addr-info"); + ibm_configure_pe = rtas_token("ibm,configure-pe"); + ibm_configure_bridge = rtas_token ("ibm,configure-bridge"); + + /* necessary sanity check */ + if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE) { + pr_warning("%s: RTAS service invalid\n", + __func__); + return -EINVAL; + } else if (ibm_set_slot_reset == RTAS_UNKNOWN_SERVICE) { + pr_warning("%s: RTAS service invalid\n", + __func__); + return -EINVAL; + } else if (ibm_read_slot_reset_state2 == RTAS_UNKNOWN_SERVICE && + ibm_read_slot_reset_state == RTAS_UNKNOWN_SERVICE) { + pr_warning("%s: RTAS service and " + " invalid\n", + __func__); + return -EINVAL; + } else if (ibm_slot_error_detail == RTAS_UNKNOWN_SERVICE) { + pr_warning("%s: RTAS service invalid\n", + __func__); + return -EINVAL; + } else if (ibm_get_config_addr_info2 == RTAS_UNKNOWN_SERVICE && + ibm_get_config_addr_info == RTAS_UNKNOWN_SERVICE) { + pr_warning("%s: RTAS service and " + " invalid\n", + __func__); + return -EINVAL; + } else if (ibm_configure_pe == RTAS_UNKNOWN_SERVICE && + ibm_configure_bridge == RTAS_UNKNOWN_SERVICE) { + pr_warning("%s: RTAS service and " + " invalid\n", + __func__); + return -EINVAL; + } + return 0; }