[PATCH 1/1] powerpc/eeh: Add support for ibm,configure-pe RTAS call

[Richard A Lary <rlary@linux.vnet.ibm.com>]

From: Richard A. Lary <rlary@linux.vnet.ibm.com>

Added support for ibm,configure-pe RTAS call introduced with
PAPR 2.2.

Signed-off-by: Richard A. Lary <rlary@linux.vnet.ibm.com>
---
  arch/powerpc/platforms/pseries/eeh.c |   13 	12 +	1 -	0 !
  1 file changed, 12 insertions(+), 1 deletion(-)

Index: b/arch/powerpc/platforms/pseries/eeh.c
===================================================================
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -95,6 +95,7 @@ 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;

  int eeh_subsystem_enabled;
  EXPORT_SYMBOL(eeh_subsystem_enabled);
@@ -263,6 +264,8 @@ void eeh_slot_error_detail(struct pci_dn
  	pci_regs_buf[0] = 0;

  	rtas_pci_enable(pdn, EEH_THAW_MMIO);
+	rtas_configure_bridge(pdn);
+	eeh_restore_bars(pdn);
  	loglen = gather_pci_data(pdn, pci_regs_buf, EEH_PCI_REGS_LOG_LEN);

  	rtas_slot_error_detail(pdn, severity, pci_regs_buf, loglen);
@@ -896,6 +899,7 @@ void
  rtas_configure_bridge(struct pci_dn *pdn)
  {
  	int config_addr;
+	int token;
  	int rc;

  	/* Use PE configuration address, if present */
@@ -903,7 +907,13 @@ rtas_configure_bridge(struct pci_dn *pdn
  	if (pdn->eeh_pe_config_addr)
  		config_addr = pdn->eeh_pe_config_addr;

-	rc = rtas_call(ibm_configure_bridge,3,1, NULL,
+	/* Use new configure-pe function, if supported */
+	if (ibm_configure_pe != RTAS_UNKNOWN_SERVICE)
+		token = ibm_configure_pe;
+	else
+		token = ibm_configure_bridge;
+
+	rc = rtas_call(token, 3, 1, NULL,
  	               config_addr,
  	               BUID_HI(pdn->phb->buid),
  	               BUID_LO(pdn->phb->buid));
@@ -1079,6 +1089,7 @@ void __init eeh_init(void)
  	ibm_get_config_addr_info = rtas_token("ibm,get-config-addr-info");
  	ibm_get_config_addr_info2 = rtas_token("ibm,get-config-addr-info2");
  	ibm_configure_bridge = rtas_token ("ibm,configure-bridge");
+	ibm_configure_pe = rtas_token("ibm,configure-pe");

  	if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE)
  		return;