powerpc/eeh: Cleanup on EEH PCI address cache

The patch does cleanup on EEH PCI address cache based on the fact
EEH core is the only user of the component.

        * Cleanup on function names so that they all have prefix
          "eeh" and looks more short.
        * Function printk() has been replaced with pr_debug() or
          pr_warning() accordingly.
Signed-off-by: NGavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/eeh.h

@@ -197,7 +197,7 @@ int __exit eeh_ops_unregister(const char *name);
 unsigned long eeh_check_failure(const volatile void __iomem *token,
 				unsigned long val);
 int eeh_dev_check_failure(struct eeh_dev *edev);
-void __init pci_addr_cache_build(void);
+void __init eeh_addr_cache_build(void);
 void eeh_add_device_tree_early(struct device_node *);
 void eeh_add_device_tree_late(struct pci_bus *);
 void eeh_remove_bus_device(struct pci_dev *);
@@ -233,7 +233,7 @@ static inline unsigned long eeh_check_failure(const volatile void __iomem *token
 
 #define eeh_dev_check_failure(x) (0)
 
-static inline void pci_addr_cache_build(void) { }
+static inline void eeh_addr_cache_build(void) { }
 
 static inline void eeh_add_device_tree_early(struct device_node *dn) { }
 

arch/powerpc/include/asm/ppc-pci.h

@@ -47,10 +47,9 @@ extern int rtas_setup_phb(struct pci_controller *phb);
 
 #ifdef CONFIG_EEH
 
-void pci_addr_cache_build(void);
-void pci_addr_cache_insert_device(struct pci_dev *dev);
-void pci_addr_cache_remove_device(struct pci_dev *dev);
-struct eeh_dev *pci_addr_cache_get_device(unsigned long addr);
+void eeh_addr_cache_insert_dev(struct pci_dev *dev);
+void eeh_addr_cache_rmv_dev(struct pci_dev *dev);
+struct eeh_dev *eeh_addr_cache_get_dev(unsigned long addr);
 void eeh_slot_error_detail(struct eeh_pe *pe, int severity);
 int eeh_pci_enable(struct eeh_pe *pe, int function);
 int eeh_reset_pe(struct eeh_pe *);

arch/powerpc/platforms/pseries/eeh.c

@@ -411,7 +411,7 @@ unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned lon
 
 	/* Finding the phys addr + pci device; this is pretty quick. */
 	addr = eeh_token_to_phys((unsigned long __force) token);
-	edev = pci_addr_cache_get_device(addr);
+	edev = eeh_addr_cache_get_dev(addr);
 	if (!edev) {
 		eeh_stats.no_device++;
 		return val;
@@ -787,7 +787,7 @@ static void eeh_add_device_late(struct pci_dev *dev)
 	edev->pdev = dev;
 	dev->dev.archdata.edev = edev;
 
-	pci_addr_cache_insert_device(dev);
+	eeh_addr_cache_insert_dev(dev);
 	eeh_sysfs_add_device(dev);
 }
 
@@ -844,7 +844,7 @@ static void eeh_remove_device(struct pci_dev *dev)
 	pci_dev_put(dev);
 
 	eeh_rmv_from_parent_pe(edev);
-	pci_addr_cache_remove_device(dev);
+	eeh_addr_cache_rmv_dev(dev);
 	eeh_sysfs_remove_device(dev);
 }
 

arch/powerpc/platforms/pseries/eeh_cache.c

@@ -60,7 +60,7 @@ static struct pci_io_addr_cache {
 	spinlock_t piar_lock;
 } pci_io_addr_cache_root;
 
-static inline struct eeh_dev *__pci_addr_cache_get_device(unsigned long addr)
+static inline struct eeh_dev *__eeh_addr_cache_get_device(unsigned long addr)
 {
 	struct rb_node *n = pci_io_addr_cache_root.rb_root.rb_node;
 
@@ -84,7 +84,7 @@ static inline struct eeh_dev *__pci_addr_cache_get_device(unsigned long addr)
 }
 
 /**
- * pci_addr_cache_get_device - Get device, given only address
+ * eeh_addr_cache_get_dev - Get device, given only address
  * @addr: mmio (PIO) phys address or i/o port number
  *
  * Given an mmio phys address, or a port number, find a pci device
@@ -93,13 +93,13 @@ static inline struct eeh_dev *__pci_addr_cache_get_device(unsigned long addr)
  * from zero (that is, they do *not* have pci_io_addr added in).
  * It is safe to call this function within an interrupt.
  */
-struct eeh_dev *pci_addr_cache_get_device(unsigned long addr)
+struct eeh_dev *eeh_addr_cache_get_dev(unsigned long addr)
 {
 	struct eeh_dev *edev;
 	unsigned long flags;
 
 	spin_lock_irqsave(&pci_io_addr_cache_root.piar_lock, flags);
-	edev = __pci_addr_cache_get_device(addr);
+	edev = __eeh_addr_cache_get_device(addr);
 	spin_unlock_irqrestore(&pci_io_addr_cache_root.piar_lock, flags);
 	return edev;
 }
@@ -109,7 +109,7 @@ struct eeh_dev *pci_addr_cache_get_device(unsigned long addr)
  * Handy-dandy debug print routine, does nothing more
  * than print out the contents of our addr cache.
  */
-static void pci_addr_cache_print(struct pci_io_addr_cache *cache)
+static void eeh_addr_cache_print(struct pci_io_addr_cache *cache)
 {
 	struct rb_node *n;
 	int cnt = 0;
@@ -118,7 +118,7 @@ static void pci_addr_cache_print(struct pci_io_addr_cache *cache)
 	while (n) {
 		struct pci_io_addr_range *piar;
 		piar = rb_entry(n, struct pci_io_addr_range, rb_node);
-		printk(KERN_DEBUG "PCI: %s addr range %d [%lx-%lx]: %s\n",
+		pr_debug("PCI: %s addr range %d [%lx-%lx]: %s\n",
 		       (piar->flags & IORESOURCE_IO) ? "i/o" : "mem", cnt,
 		       piar->addr_lo, piar->addr_hi, pci_name(piar->pcidev));
 		cnt++;
@@ -129,7 +129,7 @@ static void pci_addr_cache_print(struct pci_io_addr_cache *cache)
 
 /* Insert address range into the rb tree. */
 static struct pci_io_addr_range *
-pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
+eeh_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
 		      unsigned long ahi, unsigned int flags)
 {
 	struct rb_node **p = &pci_io_addr_cache_root.rb_root.rb_node;
@@ -147,7 +147,7 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
 		} else {
 			if (dev != piar->pcidev ||
 			    alo != piar->addr_lo || ahi != piar->addr_hi) {
-				printk(KERN_WARNING "PIAR: overlapping address range\n");
+				pr_warning("PIAR: overlapping address range\n");
 			}
 			return piar;
 		}
@@ -164,7 +164,7 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
 	piar->flags = flags;
 
 #ifdef DEBUG
-	printk(KERN_DEBUG "PIAR: insert range=[%lx:%lx] dev=%s\n",
+	pr_debug("PIAR: insert range=[%lx:%lx] dev=%s\n",
 	                  alo, ahi, pci_name(dev));
 #endif
 
@@ -174,7 +174,7 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
 	return piar;
 }
 
-static void __pci_addr_cache_insert_device(struct pci_dev *dev)
+static void __eeh_addr_cache_insert_dev(struct pci_dev *dev)
 {
 	struct device_node *dn;
 	struct eeh_dev *edev;
@@ -182,7 +182,7 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev)
 
 	dn = pci_device_to_OF_node(dev);
 	if (!dn) {
-		printk(KERN_WARNING "PCI: no pci dn found for dev=%s\n", pci_name(dev));
+		pr_warning("PCI: no pci dn found for dev=%s\n", pci_name(dev));
 		return;
 	}
 
@@ -213,19 +213,19 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev)
 			continue;
 		if (start == 0 || ~start == 0 || end == 0 || ~end == 0)
 			 continue;
-		pci_addr_cache_insert(dev, start, end, flags);
+		eeh_addr_cache_insert(dev, start, end, flags);
 	}
 }
 
 /**
- * pci_addr_cache_insert_device - Add a device to the address cache
+ * eeh_addr_cache_insert_dev - Add a device to the address cache
  * @dev: PCI device whose I/O addresses we are interested in.
  *
  * In order to support the fast lookup of devices based on addresses,
  * we maintain a cache of devices that can be quickly searched.
  * This routine adds a device to that cache.
  */
-void pci_addr_cache_insert_device(struct pci_dev *dev)
+void eeh_addr_cache_insert_dev(struct pci_dev *dev)
 {
 	unsigned long flags;
 
@@ -234,11 +234,11 @@ void pci_addr_cache_insert_device(struct pci_dev *dev)
 		return;
 
 	spin_lock_irqsave(&pci_io_addr_cache_root.piar_lock, flags);
-	__pci_addr_cache_insert_device(dev);
+	__eeh_addr_cache_insert_dev(dev);
 	spin_unlock_irqrestore(&pci_io_addr_cache_root.piar_lock, flags);
 }
 
-static inline void __pci_addr_cache_remove_device(struct pci_dev *dev)
+static inline void __eeh_addr_cache_rmv_dev(struct pci_dev *dev)
 {
 	struct rb_node *n;
 
@@ -259,7 +259,7 @@ static inline void __pci_addr_cache_remove_device(struct pci_dev *dev)
 }
 
 /**
- * pci_addr_cache_remove_device - remove pci device from addr cache
+ * eeh_addr_cache_rmv_dev - remove pci device from addr cache
  * @dev: device to remove
  *
  * Remove a device from the addr-cache tree.
@@ -267,17 +267,17 @@ static inline void __pci_addr_cache_remove_device(struct pci_dev *dev)
  * the tree multiple times (once per resource).
  * But so what; device removal doesn't need to be that fast.
  */
-void pci_addr_cache_remove_device(struct pci_dev *dev)
+void eeh_addr_cache_rmv_dev(struct pci_dev *dev)
 {
 	unsigned long flags;
 
 	spin_lock_irqsave(&pci_io_addr_cache_root.piar_lock, flags);
-	__pci_addr_cache_remove_device(dev);
+	__eeh_addr_cache_rmv_dev(dev);
 	spin_unlock_irqrestore(&pci_io_addr_cache_root.piar_lock, flags);
 }
 
 /**
- * pci_addr_cache_build - Build a cache of I/O addresses
+ * eeh_addr_cache_build - Build a cache of I/O addresses
  *
  * Build a cache of pci i/o addresses.  This cache will be used to
  * find the pci device that corresponds to a given address.
@@ -285,7 +285,7 @@ void pci_addr_cache_remove_device(struct pci_dev *dev)
  * Must be run late in boot process, after the pci controllers
  * have been scanned for devices (after all device resources are known).
  */
-void __init pci_addr_cache_build(void)
+void __init eeh_addr_cache_build(void)
 {
 	struct device_node *dn;
 	struct eeh_dev *edev;
@@ -294,7 +294,7 @@ void __init pci_addr_cache_build(void)
 	spin_lock_init(&pci_io_addr_cache_root.piar_lock);
 
 	for_each_pci_dev(dev) {
-		pci_addr_cache_insert_device(dev);
+		eeh_addr_cache_insert_dev(dev);
 
 		dn = pci_device_to_OF_node(dev);
 		if (!dn)
@@ -313,7 +313,7 @@ void __init pci_addr_cache_build(void)
 
 #ifdef DEBUG
 	/* Verify tree built up above, echo back the list of addrs. */
-	pci_addr_cache_print(&pci_io_addr_cache_root);
+	eeh_addr_cache_print(&pci_io_addr_cache_root);
 #endif
 }
 

arch/powerpc/platforms/pseries/pci.c

@@ -73,7 +73,7 @@ void __init pSeries_final_fixup(void)
 {
 	pSeries_request_regions();
 
-	pci_addr_cache_build();
+	eeh_addr_cache_build();
 }
 
 /*