[PATCH] powerpc: Save device BARs much earlier in the boot sequence

241-eeh-save-bars-earlier.patch

Save the PCI device bars *before* any PCI probing is done.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
(cherry picked from 76c902b919098860f3d4e125f847abcc4cb1782a commit)

2 files changed, 5 insertions, 6 deletions

diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
index a81bc363f350..b0d816fe2e27 100644
--- a/include/asm-powerpc/pci-bridge.h
+++ b/include/asm-powerpc/pci-bridge.h
@@ -61,9 +61,10 @@ struct pci_controller;
 struct iommu_table;
 
 struct pci_dn {
-        int     busno;                  /* for pci devices */
-        int     bussubno;               /* for pci devices */
-        int     devfn;                  /* for pci devices */
+        int     busno;                  /* pci bus number */
+        int     bussubno;               /* pci subordinate bus number */
+        int     devfn;                  /* pci device and function number */
+        int     class_code;             /* pci device class */
 
 #ifdef CONFIG_PPC_PSERIES
         int     eeh_mode;               /* See eeh.h for possible EEH_MODEs */
@@ -71,7 +72,6 @@ struct pci_dn {
         int     eeh_pe_config_addr; /* new-style partition endpoint address */
         int     eeh_check_count;        /* # times driver ignored error */
         int     eeh_freeze_count;       /* # times this device froze up. */
-        int     eeh_is_bridge;          /* device is pci-to-pci bridge */
 #endif
         int     pci_ext_config_space;   /* for pci devices */
         struct  pci_controller *phb;    /* for pci devices */
diff --git a/include/asm-powerpc/ppc-pci.h b/include/asm-powerpc/ppc-pci.h
index 1a2db61694f2..f80482c7231f 100644
--- a/include/asm-powerpc/ppc-pci.h
+++ b/include/asm-powerpc/ppc-pci.h
@@ -58,8 +58,6 @@ void pci_addr_cache_remove_device(struct pci_dev *dev);
 void pci_addr_cache_build(void);
 struct pci_dev *pci_get_device_by_addr(unsigned long addr);
 
-void eeh_save_bars(struct pci_dev * pdev, struct pci_dn *pdn);
-
 /**
  * eeh_slot_error_detail -- record and EEH error condition to the log
  * @severity: 1 if temporary, 2 if permanent failure.
@@ -103,6 +101,7 @@ void eeh_restore_bars(struct pci_dn *);
 void rtas_configure_bridge(struct pci_dn *);
 
 int rtas_write_config(struct pci_dn *, int where, int size, u32 val);
+int rtas_read_config(struct pci_dn *, int where, int size, u32 *val);
 
 /**
  * mark and clear slots: find "partition endpoint" PE and set or