[PATCH 0/5] [REPOST] PowerPC: ibmebus refactoring and fixes

[PATCH 0/5] [REPOST] PowerPC: ibmebus refactoring and fixes

[Joachim Fenkes]

This patchset will merge the ibmebus and of_platform bus drivers by basing a
lot of ibmebus functionality on of_platform code and adding the features
specific to ibmebus on top of that.

This is a repost of my previous patchset incorporating Arnd's comments.

I split the actual ibmebus rework into three patches (2/5-4/5) for easier
readability. The kernel will compile during the intermediate states, and
ibmebus will not crash, but not work either.

As a side-effect of patch 3/5, a problem with bus_id collisions in case of
two devices sharing the same location code is resolved -- the bus_id is now
determined differently.

[1/5] moves of_device allocation into of_device.[ch]
[2/5] removes the old bus match/probe/remove functions
[3/5] adds device creation and bus probing based on of_device
[4/5] finally moves to of_device and of_platform_driver by changing
      ibmebus.h and matching the eHCA and eHEA drivers
[5/5] just changes a nit in ibmebus_store_probe()

These patches should apply cleanly, in order, against 2.6.23-rc5 and against
Linus' git. Please review and comment them, and queue them up for 2.6.24 if
you think they're okay.

Thanks and regards,
  Joachim


 arch/powerpc/kernel/ibmebus.c             |  267 ++++++++-----------------=
=2D---
 arch/powerpc/kernel/of_device.c           |   80 +++++++++
 arch/powerpc/kernel/of_platform.c         |   70 +--------
 drivers/infiniband/hw/ehca/ehca_classes.h |    2 +-
 drivers/infiniband/hw/ehca/ehca_eq.c      |    6 +-
 drivers/infiniband/hw/ehca/ehca_main.c    |   32 ++--
 drivers/net/ehea/ehea.h                   |    2 +-
 drivers/net/ehea/ehea_main.c              |   72 ++++----
 include/asm-powerpc/ibmebus.h             |   38 +----
 include/asm-powerpc/of_device.h           |    4 +
 include/linux/of_device.h                 |    5 +
 11 files changed, 228 insertions(+), 350 deletions(-)

=2D-=20
Joachim Fenkes =A0-- =A0eHCA Linux Driver Developer and Hardware Tamer
IBM Deutschland Entwicklung GmbH =A0-- =A0Dept. 3627 (I/O Firmware Dev. 2)
Schoenaicher Strasse 220 =A0-- =A071032 Boeblingen =A0-- =A0Germany
eMail: fenkes@de.ibm.com

[PATCH 1/5] PowerPC: Move of_device allocation into of_device.[ch]

[Joachim Fenkes]

Extract generic of_device allocation code from of_platform_device_create()
and move it into of_device.[ch], called of_device_alloc(). Also, there's now
of_device_free() which puts the device node.

This way, bus drivers that build on of_platform (like ibmebus will) can
build upon this code instead of reinventing the wheel.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
---
 include/asm-powerpc/of_device.h   |    4 ++
 include/linux/of_device.h         |    5 ++
 arch/powerpc/kernel/of_device.c   |   80 +++++++++++++++++++++++++++++++++++++
 arch/powerpc/kernel/of_platform.c |   70 +-------------------------------
 4 files changed, 91 insertions(+), 68 deletions(-)

diff --git a/include/asm-powerpc/of_device.h b/include/asm-powerpc/of_device.h
index ec2a8a2..9ab469d 100644
--- a/include/asm-powerpc/of_device.h
+++ b/include/asm-powerpc/of_device.h
@@ -17,6 +17,10 @@ struct of_device
 	struct device		dev;		/* Generic device interface */
 };
 
+extern struct of_device *of_device_alloc(struct device_node *np,
+					 const char *bus_id,
+					 struct device *parent);
+
 extern ssize_t of_device_get_modalias(struct of_device *ofdev,
 					char *str, ssize_t len);
 extern int of_device_uevent(struct device *dev,
diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index 91bf84b..212bffb 100644
--- a/include/linux/of_device.h
+++ b/include/linux/of_device.h
@@ -22,5 +22,10 @@ extern int of_device_register(struct of_device *ofdev);
 extern void of_device_unregister(struct of_device *ofdev);
 extern void of_release_dev(struct device *dev);
 
+static inline void of_device_free(struct of_device *dev)
+{
+	of_release_dev(&dev->dev);
+}
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_OF_DEVICE_H */
diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c
index 89b911e..ecb8b0e 100644
--- a/arch/powerpc/kernel/of_device.c
+++ b/arch/powerpc/kernel/of_device.c
@@ -7,8 +7,88 @@
 #include <linux/slab.h>
 
 #include <asm/errno.h>
+#include <asm/dcr.h>
 #include <asm/of_device.h>
 
+static void of_device_make_bus_id(struct of_device *dev)
+{
+	static atomic_t bus_no_reg_magic;
+	struct device_node *node = dev->node;
+	char *name = dev->dev.bus_id;
+	const u32 *reg;
+	u64 addr;
+	int magic;
+
+	/*
+	 * If it's a DCR based device, use 'd' for native DCRs
+	 * and 'D' for MMIO DCRs.
+	 */
+#ifdef CONFIG_PPC_DCR
+	reg = of_get_property(node, "dcr-reg", NULL);
+	if (reg) {
+#ifdef CONFIG_PPC_DCR_NATIVE
+		snprintf(name, BUS_ID_SIZE, "d%x.%s",
+			 *reg, node->name);
+#else /* CONFIG_PPC_DCR_NATIVE */
+		addr = of_translate_dcr_address(node, *reg, NULL);
+		if (addr != OF_BAD_ADDR) {
+			snprintf(name, BUS_ID_SIZE,
+				 "D%llx.%s", (unsigned long long)addr,
+				 node->name);
+			return;
+		}
+#endif /* !CONFIG_PPC_DCR_NATIVE */
+	}
+#endif /* CONFIG_PPC_DCR */
+
+	/*
+	 * For MMIO, get the physical address
+	 */
+	reg = of_get_property(node, "reg", NULL);
+	if (reg) {
+		addr = of_translate_address(node, reg);
+		if (addr != OF_BAD_ADDR) {
+			snprintf(name, BUS_ID_SIZE,
+				 "%llx.%s", (unsigned long long)addr,
+				 node->name);
+			return;
+		}
+	}
+
+	/*
+	 * No BusID, use the node name and add a globally incremented
+	 * counter (and pray...)
+	 */
+	magic = atomic_add_return(1, &bus_no_reg_magic);
+	snprintf(name, BUS_ID_SIZE, "%s.%d", node->name, magic - 1);
+}
+
+struct of_device *of_device_alloc(struct device_node *np,
+				  const char *bus_id,
+				  struct device *parent)
+{
+	struct of_device *dev;
+
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return NULL;
+
+	dev->node = of_node_get(np);
+	dev->dev.dma_mask = &dev->dma_mask;
+	dev->dev.parent = parent;
+	dev->dev.release = of_release_dev;
+	dev->dev.archdata.of_node = np;
+	dev->dev.archdata.numa_node = of_node_to_nid(np);
+
+	if (bus_id)
+		strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
+	else
+		of_device_make_bus_id(dev);
+
+	return dev;
+}
+EXPORT_SYMBOL(of_device_alloc);
+
 ssize_t of_device_get_modalias(struct of_device *ofdev,
 				char *str, ssize_t len)
 {
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index f70e787..1d96b82 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -21,7 +21,6 @@
 #include <linux/pci.h>
 
 #include <asm/errno.h>
-#include <asm/dcr.h>
 #include <asm/of_device.h>
 #include <asm/of_platform.h>
 #include <asm/topology.h>
@@ -53,8 +52,6 @@ static struct of_device_id of_default_bus_ids[] = {
 	{},
 };
 
-static atomic_t bus_no_reg_magic;
-
 struct bus_type of_platform_bus_type = {
        .uevent	= of_device_uevent,
 };
@@ -84,89 +81,26 @@ void of_unregister_platform_driver(struct of_platform_driver *drv)
 }
 EXPORT_SYMBOL(of_unregister_platform_driver);
 
-static void of_platform_make_bus_id(struct of_device *dev)
-{
-	struct device_node *node = dev->node;
-	char *name = dev->dev.bus_id;
-	const u32 *reg;
-	u64 addr;
-	int magic;
-
-	/*
-	 * If it's a DCR based device, use 'd' for native DCRs
-	 * and 'D' for MMIO DCRs.
-	 */
-#ifdef CONFIG_PPC_DCR
-	reg = of_get_property(node, "dcr-reg", NULL);
-	if (reg) {
-#ifdef CONFIG_PPC_DCR_NATIVE
-		snprintf(name, BUS_ID_SIZE, "d%x.%s",
-			 *reg, node->name);
-#else /* CONFIG_PPC_DCR_NATIVE */
-		addr = of_translate_dcr_address(node, *reg, NULL);
-		if (addr != OF_BAD_ADDR) {
-			snprintf(name, BUS_ID_SIZE,
-				 "D%llx.%s", (unsigned long long)addr,
-				 node->name);
-			return;
-		}
-#endif /* !CONFIG_PPC_DCR_NATIVE */
-	}
-#endif /* CONFIG_PPC_DCR */
-
-	/*
-	 * For MMIO, get the physical address
-	 */
-	reg = of_get_property(node, "reg", NULL);
-	if (reg) {
-		addr = of_translate_address(node, reg);
-		if (addr != OF_BAD_ADDR) {
-			snprintf(name, BUS_ID_SIZE,
-				 "%llx.%s", (unsigned long long)addr,
-				 node->name);
-			return;
-		}
-	}
-
-	/*
-	 * No BusID, use the node name and add a globally incremented
-	 * counter (and pray...)
-	 */
-	magic = atomic_add_return(1, &bus_no_reg_magic);
-	snprintf(name, BUS_ID_SIZE, "%s.%d", node->name, magic - 1);
-}
-
 struct of_device* of_platform_device_create(struct device_node *np,
 					    const char *bus_id,
 					    struct device *parent)
 {
 	struct of_device *dev;
 
-	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	dev = of_device_alloc(np, bus_id, parent);
 	if (!dev)
 		return NULL;
 
-	dev->node = of_node_get(np);
 	dev->dma_mask = 0xffffffffUL;
-	dev->dev.dma_mask = &dev->dma_mask;
-	dev->dev.parent = parent;
 	dev->dev.bus = &of_platform_bus_type;
-	dev->dev.release = of_release_dev;
-	dev->dev.archdata.of_node = np;
-	dev->dev.archdata.numa_node = of_node_to_nid(np);
 
 	/* We do not fill the DMA ops for platform devices by default.
 	 * This is currently the responsibility of the platform code
 	 * to do such, possibly using a device notifier
 	 */
 
-	if (bus_id)
-		strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
-	else
-		of_platform_make_bus_id(dev);
-
 	if (of_device_register(dev) != 0) {
-		kfree(dev);
+		of_device_free(dev);
 		return NULL;
 	}
 
-- 
1.5.2

Re: [PATCH 1/5] PowerPC: Move of_device allocation into of_device.[ch]

[Arnd Bergmann]

On Wednesday 26 September 2007, Joachim Fenkes wrote:
> Extract generic of_device allocation code from of_platform_device_create()
> and move it into of_device.[ch], called of_device_alloc(). Also, there's now
> of_device_free() which puts the device node.
> 
> This way, bus drivers that build on of_platform (like ibmebus will) can
> build upon this code instead of reinventing the wheel.
> 
> Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>

Acked-by: Arnd Bergmann <arnd@arndb.de>

[PATCH 2/5] ibmebus: Remove bus match/probe/remove functions

[Joachim Fenkes]

Remove old code that will be replaced by rewritten and shorter functions in
the next patch. Keep struct ibmebus_dev and struct ibmebus_driver for now,
but replace ibmebus_{,un}register_driver() by dummy functions. This way, the
kernel will still compile and run during the transition and git bisect will
be happy.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
---
 arch/powerpc/kernel/ibmebus.c |  199 ++---------------------------------------
 1 files changed, 6 insertions(+), 193 deletions(-)

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index d6a38cd..cc80f84 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -41,6 +41,7 @@
 #include <linux/kobject.h>
 #include <linux/dma-mapping.h>
 #include <linux/interrupt.h>
+#include <linux/of_platform.h>
 #include <asm/ibmebus.h>
 #include <asm/abs_addr.h>
 
@@ -123,183 +124,14 @@ static struct dma_mapping_ops ibmebus_dma_ops = {
 	.dma_supported  = ibmebus_dma_supported,
 };
 
-static int ibmebus_bus_probe(struct device *dev)
-{
-	struct ibmebus_dev *ibmebusdev    = to_ibmebus_dev(dev);
-	struct ibmebus_driver *ibmebusdrv = to_ibmebus_driver(dev->driver);
-	const struct of_device_id *id;
-	int error = -ENODEV;
-
-	if (!ibmebusdrv->probe)
-		return error;
-
-	id = of_match_device(ibmebusdrv->id_table, &ibmebusdev->ofdev);
-	if (id) {
-		error = ibmebusdrv->probe(ibmebusdev, id);
-	}
-
-	return error;
-}
-
-static int ibmebus_bus_remove(struct device *dev)
-{
-	struct ibmebus_dev *ibmebusdev    = to_ibmebus_dev(dev);
-	struct ibmebus_driver *ibmebusdrv = to_ibmebus_driver(dev->driver);
-
-	if (ibmebusdrv->remove) {
-		return ibmebusdrv->remove(ibmebusdev);
-	}
-
-	return 0;
-}
-
-static void __devinit ibmebus_dev_release(struct device *dev)
-{
-	of_node_put(to_ibmebus_dev(dev)->ofdev.node);
-	kfree(to_ibmebus_dev(dev));
-}
-
-static int __devinit ibmebus_register_device_common(
-	struct ibmebus_dev *dev, const char *name)
-{
-	int err = 0;
-
-	dev->ofdev.dev.parent  = &ibmebus_bus_device;
-	dev->ofdev.dev.bus     = &ibmebus_bus_type;
-	dev->ofdev.dev.release = ibmebus_dev_release;
-
-	dev->ofdev.dev.archdata.of_node = dev->ofdev.node;
-	dev->ofdev.dev.archdata.dma_ops = &ibmebus_dma_ops;
-	dev->ofdev.dev.archdata.numa_node = of_node_to_nid(dev->ofdev.node);
-
-	/* An ibmebusdev is based on a of_device. We have to change the
-	 * bus type to use our own DMA mapping operations.
-	 */
-	if ((err = of_device_register(&dev->ofdev)) != 0) {
-		printk(KERN_ERR "%s: failed to register device (%d).\n",
-		       __FUNCTION__, err);
-		return -ENODEV;
-	}
-
-	return 0;
-}
-
-static struct ibmebus_dev* __devinit ibmebus_register_device_node(
-	struct device_node *dn)
-{
-	struct ibmebus_dev *dev;
-	int i, len, bus_len;
-
-	dev = kzalloc(sizeof(struct ibmebus_dev), GFP_KERNEL);
-	if (!dev)
-		return ERR_PTR(-ENOMEM);
-
-	dev->ofdev.node = of_node_get(dn);
-
-	len = strlen(dn->full_name + 1);
-	bus_len = min(len, BUS_ID_SIZE - 1);
-	memcpy(dev->ofdev.dev.bus_id, dn->full_name + 1
-	       + (len - bus_len), bus_len);
-	for (i = 0; i < bus_len; i++)
-		if (dev->ofdev.dev.bus_id[i] == '/')
-			dev->ofdev.dev.bus_id[i] = '_';
-
-	/* Register with generic device framework. */
-	if (ibmebus_register_device_common(dev, dn->name) != 0) {
-		kfree(dev);
-		return ERR_PTR(-ENODEV);
-	}
-
-	return dev;
-}
-
-static void ibmebus_probe_of_nodes(char* name)
-{
-	struct device_node *dn = NULL;
-
-	while ((dn = of_find_node_by_name(dn, name))) {
-		if (IS_ERR(ibmebus_register_device_node(dn))) {
-			of_node_put(dn);
-			return;
-		}
-	}
-
-	of_node_put(dn);
-
-	return;
-}
-
-static void ibmebus_add_devices_by_id(struct of_device_id *idt)
-{
-	while (strlen(idt->name) > 0) {
-		ibmebus_probe_of_nodes(idt->name);
-		idt++;
-	}
-
-	return;
-}
-
-static int ibmebus_match_name(struct device *dev, void *data)
-{
-	const struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
-	const char *name;
-
-	name = of_get_property(ebus_dev->ofdev.node, "name", NULL);
-
-	if (name && (strcmp(data, name) == 0))
-		return 1;
-
-	return 0;
-}
-
-static int ibmebus_unregister_device(struct device *dev)
-{
-	of_device_unregister(to_of_device(dev));
-
-	return 0;
-}
-
-static void ibmebus_remove_devices_by_id(struct of_device_id *idt)
-{
-	struct device *dev;
-
-	while (strlen(idt->name) > 0) {
-		while ((dev = bus_find_device(&ibmebus_bus_type, NULL,
-					      (void*)idt->name,
-					      ibmebus_match_name))) {
-			ibmebus_unregister_device(dev);
-		}
-		idt++;
-	}
-
-	return;
-}
-
 int ibmebus_register_driver(struct ibmebus_driver *drv)
 {
-	int err = 0;
-
-	drv->driver.name   = drv->name;
-	drv->driver.bus    = &ibmebus_bus_type;
-	drv->driver.probe  = ibmebus_bus_probe;
-	drv->driver.remove = ibmebus_bus_remove;
-
-	if ((err = driver_register(&drv->driver) != 0))
-		return err;
-
-	/* remove all supported devices first, in case someone
-	 * probed them manually before registering the driver */
-	ibmebus_remove_devices_by_id(drv->id_table);
-	ibmebus_add_devices_by_id(drv->id_table);
-
 	return 0;
 }
 EXPORT_SYMBOL(ibmebus_register_driver);
 
 void ibmebus_unregister_driver(struct ibmebus_driver *drv)
 {
-	driver_unregister(&drv->driver);
-	ibmebus_remove_devices_by_id(drv->id_table);
 }
 EXPORT_SYMBOL(ibmebus_unregister_driver);
 
@@ -327,23 +159,6 @@ void ibmebus_free_irq(struct ibmebus_dev *dev, u32 ist, void *dev_id)
 }
 EXPORT_SYMBOL(ibmebus_free_irq);
 
-static int ibmebus_bus_match(struct device *dev, struct device_driver *drv)
-{
-	const struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
-	struct ibmebus_driver *ebus_drv    = to_ibmebus_driver(drv);
-	const struct of_device_id *ids     = ebus_drv->id_table;
-	const struct of_device_id *found_id;
-
-	if (!ids)
-		return 0;
-
-	found_id = of_match_device(ids, &ebus_dev->ofdev);
-	if (found_id)
-		return 1;
-
-	return 0;
-}
-
 static ssize_t name_show(struct device *dev,
 			 struct device_attribute *attr, char *buf)
 {
@@ -404,7 +219,7 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
 	}
 
 	if ((dn = of_find_node_by_path(path))) {
-		dev = ibmebus_register_device_node(dn);
+/*		dev = ibmebus_register_device_node(dn); */
 		of_node_put(dn);
 		rc = IS_ERR(dev) ? PTR_ERR(dev) : count;
 	} else {
@@ -430,7 +245,7 @@ static ssize_t ibmebus_store_remove(struct bus_type *bus,
 
 	if ((dev = bus_find_device(&ibmebus_bus_type, NULL, path,
 				   ibmebus_match_path))) {
-		ibmebus_unregister_device(dev);
+/*		ibmebus_unregister_device(dev); */
 
 		kfree(path);
 		return count;
@@ -450,8 +265,6 @@ static struct bus_attribute ibmebus_bus_attrs[] = {
 };
 
 struct bus_type ibmebus_bus_type = {
-	.name      = "ibmebus",
-	.match     = ibmebus_bus_match,
 	.dev_attrs = ibmebus_dev_attrs,
 	.bus_attrs = ibmebus_bus_attrs
 };
@@ -463,9 +276,9 @@ static int __init ibmebus_bus_init(void)
 
 	printk(KERN_INFO "IBM eBus Device Driver\n");
 
-	err = bus_register(&ibmebus_bus_type);
+	err = of_bus_type_init(&ibmebus_bus_type, "ibmebus");
 	if (err) {
-		printk(KERN_ERR ":%s: failed to register IBM eBus.\n",
+		printk(KERN_ERR "%s: failed to register IBM eBus.\n",
 		       __FUNCTION__);
 		return err;
 	}
@@ -481,4 +294,4 @@ static int __init ibmebus_bus_init(void)
 
 	return 0;
 }
-__initcall(ibmebus_bus_init);
+postcore_initcall(ibmebus_bus_init);
-- 
1.5.2

Re: [PATCH 2/5] ibmebus: Remove bus match/probe/remove functions

[Arnd Bergmann]

On Wednesday 26 September 2007, Joachim Fenkes wrote:
> Remove old code that will be replaced by rewritten and shorter functions in
> the next patch. Keep struct ibmebus_dev and struct ibmebus_driver for now,
> but replace ibmebus_{,un}register_driver() by dummy functions. This way, the
> kernel will still compile and run during the transition and git bisect will
> be happy.
> 
> Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>

Acked-by: Arnd Bergmann <arnd@arndb.de>

[PATCH 3/5] ibmebus: Add device creation and bus probing based on of_device

[Joachim Fenkes]

The devtree root is now searched for devices matching a built-in whitelist
during boot, so these devices appear on the bus from the beginning. It is
still possible to manually add/remove devices to/from the bus by using the
probe/remove sysfs interface. Also, when a device driver registers itself,
the devtree is matched against its matchlist.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
---
 arch/powerpc/kernel/ibmebus.c |  100 +++++++++++++++++++++++++++++++++-------
 1 files changed, 82 insertions(+), 18 deletions(-)

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index cc80f84..43d4764 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -51,6 +51,13 @@ static struct device ibmebus_bus_device = { /* fake "parent" device */
 
 struct bus_type ibmebus_bus_type;
 
+/* These devices will automatically be added to the bus during init */
+static struct of_device_id builtin_matches[] = {
+	{ .compatible = "IBM,lhca" },
+	{ .compatible = "IBM,lhea" },
+	{},
+};
+
 static void *ibmebus_alloc_coherent(struct device *dev,
 				    size_t size,
 				    dma_addr_t *dma_handle,
@@ -124,6 +131,67 @@ static struct dma_mapping_ops ibmebus_dma_ops = {
 	.dma_supported  = ibmebus_dma_supported,
 };
 
+static int ibmebus_match_path(struct device *dev, void *data)
+{
+	struct device_node *dn = to_of_device(dev)->node;
+	return (dn->full_name &&
+		(strcasecmp((char *)data, dn->full_name) == 0));
+}
+
+static int ibmebus_match_node(struct device *dev, void *data)
+{
+	return to_of_device(dev)->node == data;
+}
+
+static int ibmebus_create_device(struct device_node *dn)
+{
+	struct of_device *dev;
+	int ret;
+
+	dev = of_device_alloc(dn, NULL, &ibmebus_bus_device);
+	if (!dev)
+		return -ENOMEM;
+
+	dev->dev.bus = &ibmebus_bus_type;
+	dev->dev.archdata.dma_ops = &ibmebus_dma_ops;
+
+	ret = of_device_register(dev);
+	if (ret) {
+		of_device_free(dev);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int ibmebus_create_devices(const struct of_device_id *matches)
+{
+	struct device_node *root, *child;
+	int ret = 0;
+
+	root = of_find_node_by_path("/");
+
+	for (child = NULL; (child = of_get_next_child(root, child)); ) {
+		if (!of_match_node(matches, child))
+			continue;
+
+		if (bus_find_device(&ibmebus_bus_type, NULL, child,
+				    ibmebus_match_node))
+			continue;
+
+		ret = ibmebus_create_device(child);
+		if (ret) {
+			printk(KERN_ERR "%s: failed to create device (%i)",
+			       __FUNCTION__, ret);
+			of_node_put(child);
+			break;
+		}
+	}
+
+	of_node_put(root);
+	return ret;
+}
+
 int ibmebus_register_driver(struct ibmebus_driver *drv)
 {
 	return 0;
@@ -172,18 +240,6 @@ static struct device_attribute ibmebus_dev_attrs[] = {
 	__ATTR_NULL
 };
 
-static int ibmebus_match_path(struct device *dev, void *data)
-{
-	int rc;
-	struct device_node *dn =
-		of_node_get(to_ibmebus_dev(dev)->ofdev.node);
-
-	rc = (dn->full_name && (strcasecmp((char*)data, dn->full_name) == 0));
-
-	of_node_put(dn);
-	return rc;
-}
-
 static char *ibmebus_chomp(const char *in, size_t count)
 {
 	char *out = (char*)kmalloc(count + 1, GFP_KERNEL);
@@ -202,9 +258,8 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
 				   const char *buf, size_t count)
 {
 	struct device_node *dn = NULL;
-	struct ibmebus_dev *dev;
 	char *path;
-	ssize_t rc;
+	ssize_t rc = 0;
 
 	path = ibmebus_chomp(buf, count);
 	if (!path)
@@ -219,9 +274,8 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
 	}
 
 	if ((dn = of_find_node_by_path(path))) {
-/*		dev = ibmebus_register_device_node(dn); */
+		rc = ibmebus_create_device(dn);
 		of_node_put(dn);
-		rc = IS_ERR(dev) ? PTR_ERR(dev) : count;
 	} else {
 		printk(KERN_WARNING "%s: no such device node: %s\n",
 		       __FUNCTION__, path);
@@ -230,7 +284,9 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
 
 out:
 	kfree(path);
-	return rc;
+	if (rc)
+		return rc;
+	return count;
 }
 
 static ssize_t ibmebus_store_remove(struct bus_type *bus,
@@ -245,7 +301,7 @@ static ssize_t ibmebus_store_remove(struct bus_type *bus,
 
 	if ((dev = bus_find_device(&ibmebus_bus_type, NULL, path,
 				   ibmebus_match_path))) {
-/*		ibmebus_unregister_device(dev); */
+		of_device_unregister(to_of_device(dev));
 
 		kfree(path);
 		return count;
@@ -265,6 +321,7 @@ static struct bus_attribute ibmebus_bus_attrs[] = {
 };
 
 struct bus_type ibmebus_bus_type = {
+	.uevent    = of_device_uevent,
 	.dev_attrs = ibmebus_dev_attrs,
 	.bus_attrs = ibmebus_bus_attrs
 };
@@ -292,6 +349,13 @@ static int __init ibmebus_bus_init(void)
 		return err;
 	}
 
+	err = ibmebus_create_devices(builtin_matches);
+	if (err) {
+		device_unregister(&ibmebus_bus_device);
+		bus_unregister(&ibmebus_bus_type);
+		return err;
+	}
+
 	return 0;
 }
 postcore_initcall(ibmebus_bus_init);
-- 
1.5.2

Re: [PATCH 3/5] ibmebus: Add device creation and bus probing based on of_device

[Arnd Bergmann]

On Wednesday 26 September 2007, Joachim Fenkes wrote:
> The devtree root is now searched for devices matching a built-in whitelist
> during boot, so these devices appear on the bus from the beginning. It is
> still possible to manually add/remove devices to/from the bus by using the
> probe/remove sysfs interface. Also, when a device driver registers itself,
> the devtree is matched against its matchlist.
> 
> Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>

Acked-by: Arnd Bergmann <arnd@arndb.de>

[PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Joachim Fenkes]

Replace struct ibmebus_dev and struct ibmebus_driver with struct of_device
and struct of_platform_driver, respectively. Match the external ibmebus
interface and drivers using it.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
---
 drivers/infiniband/hw/ehca/ehca_classes.h |    2 +-
 drivers/net/ehea/ehea.h                   |    2 +-
 include/asm-powerpc/ibmebus.h             |   38 +++------------
 arch/powerpc/kernel/ibmebus.c             |   28 ++++++-----
 drivers/infiniband/hw/ehca/ehca_eq.c      |    6 +-
 drivers/infiniband/hw/ehca/ehca_main.c    |   32 ++++++------
 drivers/net/ehea/ehea_main.c              |   72 ++++++++++++++--------------
 7 files changed, 79 insertions(+), 101 deletions(-)

diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index c2edd4c..8ca4dd4 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -106,7 +106,7 @@ struct ehca_sport {
 
 struct ehca_shca {
 	struct ib_device ib_device;
-	struct ibmebus_dev *ibmebus_dev;
+	struct of_device *ofdev;
 	u8 num_ports;
 	int hw_level;
 	struct list_head shca_list;
diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index 8d58be5..830a66a 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -382,7 +382,7 @@ struct ehea_port_res {
 #define EHEA_MAX_PORTS 16
 struct ehea_adapter {
 	u64 handle;
-	struct ibmebus_dev *ebus_dev;
+	struct of_device *ofdev;
 	struct ehea_port *port[EHEA_MAX_PORTS];
 	struct ehea_eq *neq;       /* notification event queue */
 	struct workqueue_struct *ehea_wq;
diff --git a/include/asm-powerpc/ibmebus.h b/include/asm-powerpc/ibmebus.h
index 87d396e..1a9d9ae 100644
--- a/include/asm-powerpc/ibmebus.h
+++ b/include/asm-powerpc/ibmebus.h
@@ -43,42 +43,18 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/mod_devicetable.h>
-#include <asm/of_device.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
 
 extern struct bus_type ibmebus_bus_type;
 
-struct ibmebus_dev {
-	struct of_device ofdev;
-};
+int ibmebus_register_driver(struct of_platform_driver *drv);
+void ibmebus_unregister_driver(struct of_platform_driver *drv);
 
-struct ibmebus_driver {
-	char *name;
-	struct of_device_id *id_table;
-	int (*probe) (struct ibmebus_dev *dev, const struct of_device_id *id);
-	int (*remove) (struct ibmebus_dev *dev);
-	struct device_driver driver;
-};
-
-int ibmebus_register_driver(struct ibmebus_driver *drv);
-void ibmebus_unregister_driver(struct ibmebus_driver *drv);
-
-int ibmebus_request_irq(struct ibmebus_dev *dev,
-			u32 ist,
-			irq_handler_t handler,
-			unsigned long irq_flags, const char * devname,
+int ibmebus_request_irq(u32 ist, irq_handler_t handler,
+			unsigned long irq_flags, const char *devname,
 			void *dev_id);
-void ibmebus_free_irq(struct ibmebus_dev *dev, u32 ist, void *dev_id);
-
-static inline struct ibmebus_driver *to_ibmebus_driver(struct device_driver *drv)
-{
-	return container_of(drv, struct ibmebus_driver, driver);
-}
-
-static inline struct ibmebus_dev *to_ibmebus_dev(struct device *dev)
-{
-	return container_of(dev, struct ibmebus_dev, ofdev.dev);
-}
-
+void ibmebus_free_irq(u32 ist, void *dev_id);
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_IBMEBUS_H */
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 43d4764..c1e2963 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -192,21 +192,26 @@ static int ibmebus_create_devices(const struct of_device_id *matches)
 	return ret;
 }
 
-int ibmebus_register_driver(struct ibmebus_driver *drv)
+int ibmebus_register_driver(struct of_platform_driver *drv)
 {
-	return 0;
+	/* If the driver uses devices that ibmebus doesn't know, add them */
+	ibmebus_create_devices(drv->match_table);
+
+	drv->driver.name   = drv->name;
+	drv->driver.bus    = &ibmebus_bus_type;
+
+	return driver_register(&drv->driver);
 }
 EXPORT_SYMBOL(ibmebus_register_driver);
 
-void ibmebus_unregister_driver(struct ibmebus_driver *drv)
+void ibmebus_unregister_driver(struct of_platform_driver *drv)
 {
+	driver_unregister(&drv->driver);
 }
 EXPORT_SYMBOL(ibmebus_unregister_driver);
 
-int ibmebus_request_irq(struct ibmebus_dev *dev,
-			u32 ist,
-			irq_handler_t handler,
-			unsigned long irq_flags, const char * devname,
+int ibmebus_request_irq(u32 ist, irq_handler_t handler,
+			unsigned long irq_flags, const char *devname,
 			void *dev_id)
 {
 	unsigned int irq = irq_create_mapping(NULL, ist);
@@ -214,12 +219,11 @@ int ibmebus_request_irq(struct ibmebus_dev *dev,
 	if (irq == NO_IRQ)
 		return -EINVAL;
 
-	return request_irq(irq, handler,
-			   irq_flags, devname, dev_id);
+	return request_irq(irq, handler, irq_flags, devname, dev_id);
 }
 EXPORT_SYMBOL(ibmebus_request_irq);
 
-void ibmebus_free_irq(struct ibmebus_dev *dev, u32 ist, void *dev_id)
+void ibmebus_free_irq(u32 ist, void *dev_id)
 {
 	unsigned int irq = irq_find_mapping(NULL, ist);
 
@@ -230,9 +234,7 @@ EXPORT_SYMBOL(ibmebus_free_irq);
 static ssize_t name_show(struct device *dev,
 			 struct device_attribute *attr, char *buf)
 {
-	struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
-	const char *name = of_get_property(ebus_dev->ofdev.node, "name", NULL);
-	return sprintf(buf, "%s\n", name);
+	return sprintf(buf, "%s\n", to_of_device(dev)->node->name);
 }
 
 static struct device_attribute ibmebus_dev_attrs[] = {
diff --git a/drivers/infiniband/hw/ehca/ehca_eq.c b/drivers/infiniband/hw/ehca/ehca_eq.c
index 1d41faa..b4ac617 100644
--- a/drivers/infiniband/hw/ehca/ehca_eq.c
+++ b/drivers/infiniband/hw/ehca/ehca_eq.c
@@ -123,7 +123,7 @@ int ehca_create_eq(struct ehca_shca *shca,
 
 	/* register interrupt handlers and initialize work queues */
 	if (type == EHCA_EQ) {
-		ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_eq,
+		ret = ibmebus_request_irq(eq->ist, ehca_interrupt_eq,
 					  IRQF_DISABLED, "ehca_eq",
 					  (void *)shca);
 		if (ret < 0)
@@ -131,7 +131,7 @@ int ehca_create_eq(struct ehca_shca *shca,
 
 		tasklet_init(&eq->interrupt_task, ehca_tasklet_eq, (long)shca);
 	} else if (type == EHCA_NEQ) {
-		ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_neq,
+		ret = ibmebus_request_irq(eq->ist, ehca_interrupt_neq,
 					  IRQF_DISABLED, "ehca_neq",
 					  (void *)shca);
 		if (ret < 0)
@@ -171,7 +171,7 @@ int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq)
 	u64 h_ret;
 
 	spin_lock_irqsave(&eq->spinlock, flags);
-	ibmebus_free_irq(NULL, eq->ist, (void *)shca);
+	ibmebus_free_irq(eq->ist, (void *)shca);
 
 	h_ret = hipz_h_destroy_eq(shca->ipz_hca_handle, eq);
 
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index c84e310..8a038b1 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -404,7 +404,7 @@ int ehca_init_device(struct ehca_shca *shca)
 	shca->ib_device.node_type           = RDMA_NODE_IB_CA;
 	shca->ib_device.phys_port_cnt       = shca->num_ports;
 	shca->ib_device.num_comp_vectors    = 1;
-	shca->ib_device.dma_device          = &shca->ibmebus_dev->ofdev.dev;
+	shca->ib_device.dma_device          = &shca->ofdev->dev;
 	shca->ib_device.query_device        = ehca_query_device;
 	shca->ib_device.query_port          = ehca_query_port;
 	shca->ib_device.query_gid           = ehca_query_gid;
@@ -658,7 +658,7 @@ static struct attribute_group ehca_dev_attr_grp = {
 	.attrs = ehca_dev_attrs
 };
 
-static int __devinit ehca_probe(struct ibmebus_dev *dev,
+static int __devinit ehca_probe(struct of_device *dev,
 				const struct of_device_id *id)
 {
 	struct ehca_shca *shca;
@@ -666,16 +666,16 @@ static int __devinit ehca_probe(struct ibmebus_dev *dev,
 	struct ib_pd *ibpd;
 	int ret;
 
-	handle = of_get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
+	handle = of_get_property(dev->node, "ibm,hca-handle", NULL);
 	if (!handle) {
 		ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
-			     dev->ofdev.node->full_name);
+			     dev->node->full_name);
 		return -ENODEV;
 	}
 
 	if (!(*handle)) {
 		ehca_gen_err("Wrong eHCA handle for adapter: %s.",
-			     dev->ofdev.node->full_name);
+			     dev->node->full_name);
 		return -ENODEV;
 	}
 
@@ -686,9 +686,9 @@ static int __devinit ehca_probe(struct ibmebus_dev *dev,
 	}
 	mutex_init(&shca->modify_mutex);
 
-	shca->ibmebus_dev = dev;
+	shca->ofdev = dev;
 	shca->ipz_hca_handle.handle = *handle;
-	dev->ofdev.dev.driver_data = shca;
+	dev->dev.driver_data = shca;
 
 	ret = ehca_sense_attributes(shca);
 	if (ret < 0) {
@@ -764,7 +764,7 @@ static int __devinit ehca_probe(struct ibmebus_dev *dev,
 		}
 	}
 
-	ret = sysfs_create_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
+	ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp);
 	if (ret) /* only complain; we can live without attributes */
 		ehca_err(&shca->ib_device,
 			 "Cannot create device attributes  ret=%d", ret);
@@ -814,12 +814,12 @@ probe1:
 	return -EINVAL;
 }
 
-static int __devexit ehca_remove(struct ibmebus_dev *dev)
+static int __devexit ehca_remove(struct of_device *dev)
 {
-	struct ehca_shca *shca = dev->ofdev.dev.driver_data;
+	struct ehca_shca *shca = dev->dev.driver_data;
 	int ret;
 
-	sysfs_remove_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
+	sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp);
 
 	if (ehca_open_aqp1 == 1) {
 		int i;
@@ -870,11 +870,11 @@ static struct of_device_id ehca_device_table[] =
 	{},
 };
 
-static struct ibmebus_driver ehca_driver = {
-	.name     = "ehca",
-	.id_table = ehca_device_table,
-	.probe    = ehca_probe,
-	.remove   = ehca_remove,
+static struct of_platform_driver ehca_driver = {
+	.name        = "ehca",
+	.match_table = ehca_device_table,
+	.probe       = ehca_probe,
+	.remove      = ehca_remove,
 };
 
 void ehca_poll_eqs(unsigned long data)
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 717b129..a4d4150 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -89,10 +89,10 @@ struct workqueue_struct *ehea_driver_wq;
 struct work_struct ehea_rereg_mr_task;
 
 
-static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
+static int __devinit ehea_probe_adapter(struct of_device *dev,
 					const struct of_device_id *id);
 
-static int __devexit ehea_remove(struct ibmebus_dev *dev);
+static int __devexit ehea_remove(struct of_device *dev);
 
 static struct of_device_id ehea_device_table[] = {
 	{
@@ -102,9 +102,9 @@ static struct of_device_id ehea_device_table[] = {
 	{},
 };
 
-static struct ibmebus_driver ehea_driver = {
+static struct of_platform_driver ehea_driver = {
 	.name = "ehea",
-	.id_table = ehea_device_table,
+	.match_table = ehea_device_table,
 	.probe = ehea_probe_adapter,
 	.remove = ehea_remove,
 };
@@ -968,7 +968,7 @@ static int ehea_reg_interrupts(struct net_device *dev)
 	snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
 		 dev->name);
 
-	ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
+	ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
 				  ehea_qp_aff_irq_handler,
 				  IRQF_DISABLED, port->int_aff_name, port);
 	if (ret) {
@@ -986,7 +986,7 @@ static int ehea_reg_interrupts(struct net_device *dev)
 		pr = &port->port_res[i];
 		snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
 			 "%s-queue%d", dev->name, i);
-		ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
+		ret = ibmebus_request_irq(pr->eq->attr.ist1,
 					  ehea_recv_irq_handler,
 					  IRQF_DISABLED, pr->int_send_name,
 					  pr);
@@ -1007,11 +1007,11 @@ out:
 out_free_req:
 	while (--i >= 0) {
 		u32 ist = port->port_res[i].eq->attr.ist1;
-		ibmebus_free_irq(NULL, ist, &port->port_res[i]);
+		ibmebus_free_irq(ist, &port->port_res[i]);
 	}
 
 out_free_qpeq:
-	ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
+	ibmebus_free_irq(port->qp_eq->attr.ist1, port);
 	i = port->num_def_qps;
 
 	goto out;
@@ -1028,14 +1028,14 @@ static void ehea_free_interrupts(struct net_device *dev)
 
 	for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 		pr = &port->port_res[i];
-		ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
+		ibmebus_free_irq(pr->eq->attr.ist1, pr);
 		if (netif_msg_intr(port))
 			ehea_info("free send irq for res %d with handle 0x%X",
 				  i, pr->eq->attr.ist1);
 	}
 
 	/* associated events */
-	ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
+	ibmebus_free_irq(port->qp_eq->attr.ist1, port);
 	if (netif_msg_intr(port))
 		ehea_info("associated event interrupt for handle 0x%X freed",
 			  port->qp_eq->attr.ist1);
@@ -2548,7 +2548,7 @@ static struct device *ehea_register_port(struct ehea_port *port,
 	int ret;
 
 	port->ofdev.node = of_node_get(dn);
-	port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
+	port->ofdev.dev.parent = &port->adapter->ofdev->dev;
 	port->ofdev.dev.bus = &ibmebus_bus_type;
 
 	sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
@@ -2729,7 +2729,7 @@ static int ehea_setup_ports(struct ehea_adapter *adapter)
 	const u32 *dn_log_port_id;
 	int i = 0;
 
-	lhea_dn = adapter->ebus_dev->ofdev.node;
+	lhea_dn = adapter->ofdev->node;
 	while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
 
 		dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
@@ -2769,7 +2769,7 @@ static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
 	struct device_node *eth_dn = NULL;
 	const u32 *dn_log_port_id;
 
-	lhea_dn = adapter->ebus_dev->ofdev.node;
+	lhea_dn = adapter->ofdev->node;
 	while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
 
 		dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
@@ -2875,31 +2875,31 @@ static ssize_t ehea_remove_port(struct device *dev,
 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
 
-int ehea_create_device_sysfs(struct ibmebus_dev *dev)
+int ehea_create_device_sysfs(struct of_device *dev)
 {
-	int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
+	int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
 	if (ret)
 		goto out;
 
-	ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
+	ret = device_create_file(&dev->dev, &dev_attr_remove_port);
 out:
 	return ret;
 }
 
-void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
+void ehea_remove_device_sysfs(struct of_device *dev)
 {
-	device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
-	device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
+	device_remove_file(&dev->dev, &dev_attr_probe_port);
+	device_remove_file(&dev->dev, &dev_attr_remove_port);
 }
 
-static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
+static int __devinit ehea_probe_adapter(struct of_device *dev,
 					const struct of_device_id *id)
 {
 	struct ehea_adapter *adapter;
 	const u64 *adapter_handle;
 	int ret;
 
-	if (!dev || !dev->ofdev.node) {
+	if (!dev || !dev->node) {
 		ehea_error("Invalid ibmebus device probed");
 		return -EINVAL;
 	}
@@ -2907,36 +2907,36 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 	adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
 	if (!adapter) {
 		ret = -ENOMEM;
-		dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
+		dev_err(&dev->dev, "no mem for ehea_adapter\n");
 		goto out;
 	}
 
 	list_add(&adapter->list, &adapter_list);
 
-	adapter->ebus_dev = dev;
+	adapter->ofdev = dev;
 
-	adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
+	adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
 					 NULL);
 	if (adapter_handle)
 		adapter->handle = *adapter_handle;
 
 	if (!adapter->handle) {
-		dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
-			" '%s'\n", dev->ofdev.node->full_name);
+		dev_err(&dev->dev, "failed getting handle for adapter"
+			" '%s'\n", dev->node->full_name);
 		ret = -ENODEV;
 		goto out_free_ad;
 	}
 
 	adapter->pd = EHEA_PD_ID;
 
-	dev->ofdev.dev.driver_data = adapter;
+	dev->dev.driver_data = adapter;
 
 
 	/* initialize adapter and ports */
 	/* get adapter properties */
 	ret = ehea_sense_adapter_attr(adapter);
 	if (ret) {
-		dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
+		dev_err(&dev->dev, "sense_adapter_attr failed: %d", ret);
 		goto out_free_ad;
 	}
 
@@ -2944,18 +2944,18 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 				      EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
 	if (!adapter->neq) {
 		ret = -EIO;
-		dev_err(&dev->ofdev.dev, "NEQ creation failed");
+		dev_err(&dev->dev, "NEQ creation failed");
 		goto out_free_ad;
 	}
 
 	tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
 		     (unsigned long)adapter);
 
-	ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
+	ret = ibmebus_request_irq(adapter->neq->attr.ist1,
 				  ehea_interrupt_neq, IRQF_DISABLED,
 				  "ehea_neq", adapter);
 	if (ret) {
-		dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
+		dev_err(&dev->dev, "requesting NEQ IRQ failed");
 		goto out_kill_eq;
 	}
 
@@ -2971,7 +2971,7 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 
 	ret = ehea_setup_ports(adapter);
 	if (ret) {
-		dev_err(&dev->ofdev.dev, "setup_ports failed");
+		dev_err(&dev->dev, "setup_ports failed");
 		goto out_rem_dev_sysfs;
 	}
 
@@ -2985,7 +2985,7 @@ out_kill_wq:
 	destroy_workqueue(adapter->ehea_wq);
 
 out_free_irq:
-	ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
+	ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
 
 out_kill_eq:
 	ehea_destroy_eq(adapter->neq);
@@ -2996,9 +2996,9 @@ out:
 	return ret;
 }
 
-static int __devexit ehea_remove(struct ibmebus_dev *dev)
+static int __devexit ehea_remove(struct of_device *dev)
 {
-	struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
+	struct ehea_adapter *adapter = dev->dev.driver_data;
 	int i;
 
 	for (i = 0; i < EHEA_MAX_PORTS; i++)
@@ -3011,7 +3011,7 @@ static int __devexit ehea_remove(struct ibmebus_dev *dev)
 
 	destroy_workqueue(adapter->ehea_wq);
 
-	ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
+	ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
 	tasklet_kill(&adapter->neq_tasklet);
 
 	ehea_destroy_eq(adapter->neq);
-- 
1.5.2

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Arnd Bergmann]

On Wednesday 26 September 2007, Joachim Fenkes wrote:
> Replace struct ibmebus_dev and struct ibmebus_driver with struct of_device
> and struct of_platform_driver, respectively. Match the external ibmebus
> interface and drivers using it.
> 
> Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>

Acked-by: Arnd Bergmann <arnd@arndb.de>

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Paul Mackerras]

Joachim Fenkes writes:

> Replace struct ibmebus_dev and struct ibmebus_driver with struct of_device
> and struct of_platform_driver, respectively. Match the external ibmebus
> interface and drivers using it.
> 
> Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
> ---
>  drivers/infiniband/hw/ehca/ehca_classes.h |    2 +-
>  drivers/net/ehea/ehea.h                   |    2 +-
>  include/asm-powerpc/ibmebus.h             |   38 +++------------
>  arch/powerpc/kernel/ibmebus.c             |   28 ++++++-----
>  drivers/infiniband/hw/ehca/ehca_eq.c      |    6 +-
>  drivers/infiniband/hw/ehca/ehca_main.c    |   32 ++++++------
>  drivers/net/ehea/ehea_main.c              |   72 ++++++++++++++--------------

This is somewhat difficult as this patch touches files that are the
responsibility of three different maintainers.  Is it possible to
split the patch into three, one for each maintainer (possibly by
keeping both old and new interfaces around for a little while)?

If not, then you need to get an Acked-by and an agreement that this
change can go via the powerpc.git tree from Roland Dreier and Jeff
Garzik.

Paul.

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Roland Dreier]

 > > Replace struct ibmebus_dev and struct ibmebus_driver with struct of_device
 > > and struct of_platform_driver, respectively. Match the external ibmebus
 > > interface and drivers using it.
 > > 
 > > Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
 > 
 > If not, then you need to get an Acked-by and an agreement that this
 > change can go via the powerpc.git tree from Roland Dreier and Jeff
 > Garzik.

I don't see anything objectionable in the infiniband parts of the
patch -- I don't have any way to test the changes but it all looks
like a straightforward conversion to a new platform API.  So:

Acked-by: Roland Dreier <rolandd@cisco.com>

 - R.

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Jan-Bernd Themann]

[-- Attachment #1: Type: text/plain, Size: 853 bytes --]

Roland Dreier <rdreier@cisco.com> wrote on 03.10.2007 20:05:44:

>  > > Replace struct ibmebus_dev and struct ibmebus_driver with 
> struct of_device
>  > > and struct of_platform_driver, respectively. Match the external 
ibmebus
>  > > interface and drivers using it.
>  > > 
>  > > Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
>  > 
>  > If not, then you need to get an Acked-by and an agreement that this
>  > change can go via the powerpc.git tree from Roland Dreier and Jeff
>  > Garzik.
> 
> I don't see anything objectionable in the infiniband parts of the
> patch -- I don't have any way to test the changes but it all looks
> like a straightforward conversion to a new platform API.  So:
> 
> Acked-by: Roland Dreier <rolandd@cisco.com>
> 
>  - R.

Looks good from eHEA driver perspective.

Acked-by: Jan-Bernd Themann <themann@de.ibm.com>

[-- Attachment #2: Type: text/html, Size: 1211 bytes --]

[PATCH 5/5] ibmebus: More speaking error return code in ibmebus_store_probe()

[Joachim Fenkes]

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
---
 arch/powerpc/kernel/ibmebus.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index c1e2963..0bd186c 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -268,10 +268,10 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
 		return -ENOMEM;
 
 	if (bus_find_device(&ibmebus_bus_type, NULL, path,
-			     ibmebus_match_path)) {
+			    ibmebus_match_path)) {
 		printk(KERN_WARNING "%s: %s has already been probed\n",
 		       __FUNCTION__, path);
-		rc = -EINVAL;
+		rc = -EEXIST;
 		goto out;
 	}
 
-- 
1.5.2

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Joachim Fenkes]

On Tuesday 09 October 2007 10:21, Jan-Bernd Themann wrote:
> Roland Dreier <rdreier@cisco.com> wrote on 03.10.2007 20:05:44:
> >  > > Replace struct ibmebus_dev and struct ibmebus_driver with struct=20
of_device
> >  > > and struct of_platform_driver, respectively. Match the external=20
ibmebus
> >  > > interface and drivers using it.
> >  > >
> >  > > Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
> >  >
> >  > This is somewhat difficult as this patch touches files that are the
> >  > responsibility of three different maintainers. =A0Is it possible to
> >  > split the patch into three, one for each maintainer (possibly by
> >  > keeping both old and new interfaces around for a little while)?
> >  >=20
> >  > If not, then you need to get an Acked-by and an agreement that this
> >  > change can go via the powerpc.git tree from Roland Dreier and Jeff
> >  > Garzik.
> >
> > I don't see anything objectionable in the infiniband parts of the
> > patch -- I don't have any way to test the changes but it all looks
> > like a straightforward conversion to a new platform API.  So:
> >
> > Acked-by: Roland Dreier <rolandd@cisco.com>
> >
> >  - R.
>
> Looks good from eHEA driver perspective.
>
> Acked-by: Jan-Bernd Themann <themann@de.ibm.com>

Jeff, do you have any objections against this patch going into the kernel
via Paul's powerpc.git tree? It touches only a few lines of ehea which are
specific to the bus interface changes.

You can see the full patch here:
  http://patchwork.ozlabs.org/linuxppc/patch?id=3D13750

If you have no objections, please ack the patch so Paul can include it.

Thanks and regards,
  Joachim

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Jeff Garzik]

Joachim Fenkes wrote:
> On Tuesday 09 October 2007 10:21, Jan-Bernd Themann wrote:
>> Roland Dreier <rdreier@cisco.com> wrote on 03.10.2007 20:05:44:
>>>  > > Replace struct ibmebus_dev and struct ibmebus_driver with struct 
> of_device
>>>  > > and struct of_platform_driver, respectively. Match the external 
> ibmebus
>>>  > > interface and drivers using it.
>>>  > >
>>>  > > Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
>>>  >
>>>  > This is somewhat difficult as this patch touches files that are the
>>>  > responsibility of three different maintainers. �Is it possible to
>>>  > split the patch into three, one for each maintainer (possibly by
>>>  > keeping both old and new interfaces around for a little while)?
>>>  > 
>>>  > If not, then you need to get an Acked-by and an agreement that this
>>>  > change can go via the powerpc.git tree from Roland Dreier and Jeff
>>>  > Garzik.
>>>
>>> I don't see anything objectionable in the infiniband parts of the
>>> patch -- I don't have any way to test the changes but it all looks
>>> like a straightforward conversion to a new platform API.  So:
>>>
>>> Acked-by: Roland Dreier <rolandd@cisco.com>
>>>
>>>  - R.
>> Looks good from eHEA driver perspective.
>>
>> Acked-by: Jan-Bernd Themann <themann@de.ibm.com>
> 
> Jeff, do you have any objections against this patch going into the kernel
> via Paul's powerpc.git tree? It touches only a few lines of ehea which are
> specific to the bus interface changes.
> 
> You can see the full patch here:
>   http://patchwork.ozlabs.org/linuxppc/patch?id=13750
> 
> If you have no objections, please ack the patch so Paul can include it.

Fine with me...

	Jeff

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 577 bytes --]

On Tue, 16 Oct 2007 23:20:00 +0200 Joachim Fenkes <fenkes@de.ibm.com> wrote:
>

One small change - I intend to remove the name and owner fields from
struct of_platform_driver, so you should not bother initialising the name
field and just initialise the name field of the embedded struct
device_driver instead.  This, of course, means that you don't need

	drv->driver.name = drv->name;

in ibmebus_register_driver.

Sorry for not picking this up earlier.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Joachim Fenkes]

On Tuesday 16 October 2007 17:27, Stephen Rothwell wrote:

> One small change - I intend to remove the name and owner fields from
> struct of_platform_driver, so you should not bother initialising the name
> field and just initialise the name field of the embedded struct
> device_driver instead.  This, of course, means that you don't need
> 
> 	drv->driver.name = drv->name;
> 
> in ibmebus_register_driver.

I'd prefer to let this line stay in place until you actually make your
change, to keep the data structures consistent as long as the name field is
present. You could remove it in your patch then.

Regards,
  Joachim

[PATCH 0/5] PowerPC: ibmebus refactoring and fixes

[Joachim Fenkes]

This patchset will merge the ibmebus and of_platform bus drivers by basing a
lot of ibmebus functionality on of_platform code and adding the features
specific to ibmebus on top of that.

I split the actual ibmebus rework into three patches (2/5-4/5) for easier
readability. The kernel will compile during the intermediate states, and
ibmebus will not crash, but not work either.

As a side-effect of patch 3/5, a problem with bus_id collisions in case of
two devices sharing the same location code is resolved -- the bus_id is now
determined differently.

[1/5] moves of_device allocation into of_device.[ch]
[2/5] removes the old bus match/probe/remove functions
[3/5] adds device creation and bus probing based on of_device
[4/5] finally moves to of_device and of_platform_driver by changing
      ibmebus.h and matching the eHCA and eHEA drivers
[5/5] just changes a nit in ibmebus_store_probe()

These patches should apply cleanly, in order, against 2.6.23-rc5 and against
Linus' git. Please review and comment them, and queue them up for 2.6.24 if
you think they're okay.

Thanks and regards,
  Joachim

 arch/powerpc/kernel/ibmebus.c             |  263 ++++++++-----------------=
=2D---
 arch/powerpc/kernel/of_device.c           |   80 +++++++++
 arch/powerpc/kernel/of_platform.c         |   70 +--------
 drivers/infiniband/hw/ehca/ehca_classes.h |    2 +-
 drivers/infiniband/hw/ehca/ehca_eq.c      |    6 +-
 drivers/infiniband/hw/ehca/ehca_main.c    |   32 ++--
 drivers/net/ehea/ehea.h                   |    2 +-
 drivers/net/ehea/ehea_main.c              |   72 ++++----
 include/asm-powerpc/ibmebus.h             |   38 +----
 include/asm-powerpc/of_device.h           |    4 +
 include/linux/of_device.h                 |    5 +
 11 files changed, 226 insertions(+), 348 deletions(-)

=2D-=20
Joachim Fenkes =A0-- =A0eHCA Linux Driver Developer and Hardware Tamer
IBM Deutschland Entwicklung GmbH =A0-- =A0Dept. 3627 (I/O Firmware Dev. 2)
Schoenaicher Strasse 220 =A0-- =A071032 Boeblingen =A0-- =A0Germany
eMail: fenkes@de.ibm.com

[PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Joachim Fenkes]

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
---
 drivers/infiniband/hw/ehca/ehca_classes.h |    2 +-
 drivers/net/ehea/ehea.h                   |    2 +-
 include/asm-powerpc/ibmebus.h             |   38 +++------------
 arch/powerpc/kernel/ibmebus.c             |   28 ++++++-----
 drivers/infiniband/hw/ehca/ehca_eq.c      |    6 +-
 drivers/infiniband/hw/ehca/ehca_main.c    |   32 ++++++------
 drivers/net/ehea/ehea_main.c              |   72 ++++++++++++++--------------
 7 files changed, 79 insertions(+), 101 deletions(-)

diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index c2edd4c..8ca4dd4 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -106,7 +106,7 @@ struct ehca_sport {
 
 struct ehca_shca {
 	struct ib_device ib_device;
-	struct ibmebus_dev *ibmebus_dev;
+	struct of_device *ofdev;
 	u8 num_ports;
 	int hw_level;
 	struct list_head shca_list;
diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index 8d58be5..830a66a 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -382,7 +382,7 @@ struct ehea_port_res {
 #define EHEA_MAX_PORTS 16
 struct ehea_adapter {
 	u64 handle;
-	struct ibmebus_dev *ebus_dev;
+	struct of_device *ofdev;
 	struct ehea_port *port[EHEA_MAX_PORTS];
 	struct ehea_eq *neq;       /* notification event queue */
 	struct workqueue_struct *ehea_wq;
diff --git a/include/asm-powerpc/ibmebus.h b/include/asm-powerpc/ibmebus.h
index 87d396e..1a9d9ae 100644
--- a/include/asm-powerpc/ibmebus.h
+++ b/include/asm-powerpc/ibmebus.h
@@ -43,42 +43,18 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/mod_devicetable.h>
-#include <asm/of_device.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
 
 extern struct bus_type ibmebus_bus_type;
 
-struct ibmebus_dev {
-	struct of_device ofdev;
-};
+int ibmebus_register_driver(struct of_platform_driver *drv);
+void ibmebus_unregister_driver(struct of_platform_driver *drv);
 
-struct ibmebus_driver {
-	char *name;
-	struct of_device_id *id_table;
-	int (*probe) (struct ibmebus_dev *dev, const struct of_device_id *id);
-	int (*remove) (struct ibmebus_dev *dev);
-	struct device_driver driver;
-};
-
-int ibmebus_register_driver(struct ibmebus_driver *drv);
-void ibmebus_unregister_driver(struct ibmebus_driver *drv);
-
-int ibmebus_request_irq(struct ibmebus_dev *dev,
-			u32 ist,
-			irq_handler_t handler,
-			unsigned long irq_flags, const char * devname,
+int ibmebus_request_irq(u32 ist, irq_handler_t handler,
+			unsigned long irq_flags, const char *devname,
 			void *dev_id);
-void ibmebus_free_irq(struct ibmebus_dev *dev, u32 ist, void *dev_id);
-
-static inline struct ibmebus_driver *to_ibmebus_driver(struct device_driver *drv)
-{
-	return container_of(drv, struct ibmebus_driver, driver);
-}
-
-static inline struct ibmebus_dev *to_ibmebus_dev(struct device *dev)
-{
-	return container_of(dev, struct ibmebus_dev, ofdev.dev);
-}
-
+void ibmebus_free_irq(u32 ist, void *dev_id);
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_IBMEBUS_H */
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index c506e0d..379472f 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -194,21 +194,26 @@ static int ibmebus_create_devices(const struct of_device_id *matches)
 	return ret;
 }
 
-int ibmebus_register_driver(struct ibmebus_driver *drv)
+int ibmebus_register_driver(struct of_platform_driver *drv)
 {
-	return 0;
+	/* If the driver uses devices that ibmebus doesn't know, add them */
+	ibmebus_create_devices(drv->match_table);
+
+	drv->driver.name   = drv->name;
+	drv->driver.bus    = &ibmebus_bus_type;
+
+	return driver_register(&drv->driver);
 }
 EXPORT_SYMBOL(ibmebus_register_driver);
 
-void ibmebus_unregister_driver(struct ibmebus_driver *drv)
+void ibmebus_unregister_driver(struct of_platform_driver *drv)
 {
+	driver_unregister(&drv->driver);
 }
 EXPORT_SYMBOL(ibmebus_unregister_driver);
 
-int ibmebus_request_irq(struct ibmebus_dev *dev,
-			u32 ist,
-			irq_handler_t handler,
-			unsigned long irq_flags, const char * devname,
+int ibmebus_request_irq(u32 ist, irq_handler_t handler,
+			unsigned long irq_flags, const char *devname,
 			void *dev_id)
 {
 	unsigned int irq = irq_create_mapping(NULL, ist);
@@ -216,12 +221,11 @@ int ibmebus_request_irq(struct ibmebus_dev *dev,
 	if (irq == NO_IRQ)
 		return -EINVAL;
 
-	return request_irq(irq, handler,
-			   irq_flags, devname, dev_id);
+	return request_irq(irq, handler, irq_flags, devname, dev_id);
 }
 EXPORT_SYMBOL(ibmebus_request_irq);
 
-void ibmebus_free_irq(struct ibmebus_dev *dev, u32 ist, void *dev_id)
+void ibmebus_free_irq(u32 ist, void *dev_id)
 {
 	unsigned int irq = irq_find_mapping(NULL, ist);
 
@@ -232,9 +236,7 @@ EXPORT_SYMBOL(ibmebus_free_irq);
 static ssize_t name_show(struct device *dev,
 			 struct device_attribute *attr, char *buf)
 {
-	struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
-	const char *name = of_get_property(ebus_dev->ofdev.node, "name", NULL);
-	return sprintf(buf, "%s\n", name);
+	return sprintf(buf, "%s\n", to_of_device(dev)->node->name);
 }
 
 static struct device_attribute ibmebus_dev_attrs[] = {
diff --git a/drivers/infiniband/hw/ehca/ehca_eq.c b/drivers/infiniband/hw/ehca/ehca_eq.c
index 1d41faa..b4ac617 100644
--- a/drivers/infiniband/hw/ehca/ehca_eq.c
+++ b/drivers/infiniband/hw/ehca/ehca_eq.c
@@ -123,7 +123,7 @@ int ehca_create_eq(struct ehca_shca *shca,
 
 	/* register interrupt handlers and initialize work queues */
 	if (type == EHCA_EQ) {
-		ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_eq,
+		ret = ibmebus_request_irq(eq->ist, ehca_interrupt_eq,
 					  IRQF_DISABLED, "ehca_eq",
 					  (void *)shca);
 		if (ret < 0)
@@ -131,7 +131,7 @@ int ehca_create_eq(struct ehca_shca *shca,
 
 		tasklet_init(&eq->interrupt_task, ehca_tasklet_eq, (long)shca);
 	} else if (type == EHCA_NEQ) {
-		ret = ibmebus_request_irq(NULL, eq->ist, ehca_interrupt_neq,
+		ret = ibmebus_request_irq(eq->ist, ehca_interrupt_neq,
 					  IRQF_DISABLED, "ehca_neq",
 					  (void *)shca);
 		if (ret < 0)
@@ -171,7 +171,7 @@ int ehca_destroy_eq(struct ehca_shca *shca, struct ehca_eq *eq)
 	u64 h_ret;
 
 	spin_lock_irqsave(&eq->spinlock, flags);
-	ibmebus_free_irq(NULL, eq->ist, (void *)shca);
+	ibmebus_free_irq(eq->ist, (void *)shca);
 
 	h_ret = hipz_h_destroy_eq(shca->ipz_hca_handle, eq);
 
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index c84e310..8a038b1 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -404,7 +404,7 @@ int ehca_init_device(struct ehca_shca *shca)
 	shca->ib_device.node_type           = RDMA_NODE_IB_CA;
 	shca->ib_device.phys_port_cnt       = shca->num_ports;
 	shca->ib_device.num_comp_vectors    = 1;
-	shca->ib_device.dma_device          = &shca->ibmebus_dev->ofdev.dev;
+	shca->ib_device.dma_device          = &shca->ofdev->dev;
 	shca->ib_device.query_device        = ehca_query_device;
 	shca->ib_device.query_port          = ehca_query_port;
 	shca->ib_device.query_gid           = ehca_query_gid;
@@ -658,7 +658,7 @@ static struct attribute_group ehca_dev_attr_grp = {
 	.attrs = ehca_dev_attrs
 };
 
-static int __devinit ehca_probe(struct ibmebus_dev *dev,
+static int __devinit ehca_probe(struct of_device *dev,
 				const struct of_device_id *id)
 {
 	struct ehca_shca *shca;
@@ -666,16 +666,16 @@ static int __devinit ehca_probe(struct ibmebus_dev *dev,
 	struct ib_pd *ibpd;
 	int ret;
 
-	handle = of_get_property(dev->ofdev.node, "ibm,hca-handle", NULL);
+	handle = of_get_property(dev->node, "ibm,hca-handle", NULL);
 	if (!handle) {
 		ehca_gen_err("Cannot get eHCA handle for adapter: %s.",
-			     dev->ofdev.node->full_name);
+			     dev->node->full_name);
 		return -ENODEV;
 	}
 
 	if (!(*handle)) {
 		ehca_gen_err("Wrong eHCA handle for adapter: %s.",
-			     dev->ofdev.node->full_name);
+			     dev->node->full_name);
 		return -ENODEV;
 	}
 
@@ -686,9 +686,9 @@ static int __devinit ehca_probe(struct ibmebus_dev *dev,
 	}
 	mutex_init(&shca->modify_mutex);
 
-	shca->ibmebus_dev = dev;
+	shca->ofdev = dev;
 	shca->ipz_hca_handle.handle = *handle;
-	dev->ofdev.dev.driver_data = shca;
+	dev->dev.driver_data = shca;
 
 	ret = ehca_sense_attributes(shca);
 	if (ret < 0) {
@@ -764,7 +764,7 @@ static int __devinit ehca_probe(struct ibmebus_dev *dev,
 		}
 	}
 
-	ret = sysfs_create_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
+	ret = sysfs_create_group(&dev->dev.kobj, &ehca_dev_attr_grp);
 	if (ret) /* only complain; we can live without attributes */
 		ehca_err(&shca->ib_device,
 			 "Cannot create device attributes  ret=%d", ret);
@@ -814,12 +814,12 @@ probe1:
 	return -EINVAL;
 }
 
-static int __devexit ehca_remove(struct ibmebus_dev *dev)
+static int __devexit ehca_remove(struct of_device *dev)
 {
-	struct ehca_shca *shca = dev->ofdev.dev.driver_data;
+	struct ehca_shca *shca = dev->dev.driver_data;
 	int ret;
 
-	sysfs_remove_group(&dev->ofdev.dev.kobj, &ehca_dev_attr_grp);
+	sysfs_remove_group(&dev->dev.kobj, &ehca_dev_attr_grp);
 
 	if (ehca_open_aqp1 == 1) {
 		int i;
@@ -870,11 +870,11 @@ static struct of_device_id ehca_device_table[] =
 	{},
 };
 
-static struct ibmebus_driver ehca_driver = {
-	.name     = "ehca",
-	.id_table = ehca_device_table,
-	.probe    = ehca_probe,
-	.remove   = ehca_remove,
+static struct of_platform_driver ehca_driver = {
+	.name        = "ehca",
+	.match_table = ehca_device_table,
+	.probe       = ehca_probe,
+	.remove      = ehca_remove,
 };
 
 void ehca_poll_eqs(unsigned long data)
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 717b129..a4d4150 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -89,10 +89,10 @@ struct workqueue_struct *ehea_driver_wq;
 struct work_struct ehea_rereg_mr_task;
 
 
-static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
+static int __devinit ehea_probe_adapter(struct of_device *dev,
 					const struct of_device_id *id);
 
-static int __devexit ehea_remove(struct ibmebus_dev *dev);
+static int __devexit ehea_remove(struct of_device *dev);
 
 static struct of_device_id ehea_device_table[] = {
 	{
@@ -102,9 +102,9 @@ static struct of_device_id ehea_device_table[] = {
 	{},
 };
 
-static struct ibmebus_driver ehea_driver = {
+static struct of_platform_driver ehea_driver = {
 	.name = "ehea",
-	.id_table = ehea_device_table,
+	.match_table = ehea_device_table,
 	.probe = ehea_probe_adapter,
 	.remove = ehea_remove,
 };
@@ -968,7 +968,7 @@ static int ehea_reg_interrupts(struct net_device *dev)
 	snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
 		 dev->name);
 
-	ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
+	ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
 				  ehea_qp_aff_irq_handler,
 				  IRQF_DISABLED, port->int_aff_name, port);
 	if (ret) {
@@ -986,7 +986,7 @@ static int ehea_reg_interrupts(struct net_device *dev)
 		pr = &port->port_res[i];
 		snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
 			 "%s-queue%d", dev->name, i);
-		ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
+		ret = ibmebus_request_irq(pr->eq->attr.ist1,
 					  ehea_recv_irq_handler,
 					  IRQF_DISABLED, pr->int_send_name,
 					  pr);
@@ -1007,11 +1007,11 @@ out:
 out_free_req:
 	while (--i >= 0) {
 		u32 ist = port->port_res[i].eq->attr.ist1;
-		ibmebus_free_irq(NULL, ist, &port->port_res[i]);
+		ibmebus_free_irq(ist, &port->port_res[i]);
 	}
 
 out_free_qpeq:
-	ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
+	ibmebus_free_irq(port->qp_eq->attr.ist1, port);
 	i = port->num_def_qps;
 
 	goto out;
@@ -1028,14 +1028,14 @@ static void ehea_free_interrupts(struct net_device *dev)
 
 	for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
 		pr = &port->port_res[i];
-		ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
+		ibmebus_free_irq(pr->eq->attr.ist1, pr);
 		if (netif_msg_intr(port))
 			ehea_info("free send irq for res %d with handle 0x%X",
 				  i, pr->eq->attr.ist1);
 	}
 
 	/* associated events */
-	ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
+	ibmebus_free_irq(port->qp_eq->attr.ist1, port);
 	if (netif_msg_intr(port))
 		ehea_info("associated event interrupt for handle 0x%X freed",
 			  port->qp_eq->attr.ist1);
@@ -2548,7 +2548,7 @@ static struct device *ehea_register_port(struct ehea_port *port,
 	int ret;
 
 	port->ofdev.node = of_node_get(dn);
-	port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
+	port->ofdev.dev.parent = &port->adapter->ofdev->dev;
 	port->ofdev.dev.bus = &ibmebus_bus_type;
 
 	sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
@@ -2729,7 +2729,7 @@ static int ehea_setup_ports(struct ehea_adapter *adapter)
 	const u32 *dn_log_port_id;
 	int i = 0;
 
-	lhea_dn = adapter->ebus_dev->ofdev.node;
+	lhea_dn = adapter->ofdev->node;
 	while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
 
 		dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
@@ -2769,7 +2769,7 @@ static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
 	struct device_node *eth_dn = NULL;
 	const u32 *dn_log_port_id;
 
-	lhea_dn = adapter->ebus_dev->ofdev.node;
+	lhea_dn = adapter->ofdev->node;
 	while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
 
 		dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
@@ -2875,31 +2875,31 @@ static ssize_t ehea_remove_port(struct device *dev,
 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
 
-int ehea_create_device_sysfs(struct ibmebus_dev *dev)
+int ehea_create_device_sysfs(struct of_device *dev)
 {
-	int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
+	int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
 	if (ret)
 		goto out;
 
-	ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
+	ret = device_create_file(&dev->dev, &dev_attr_remove_port);
 out:
 	return ret;
 }
 
-void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
+void ehea_remove_device_sysfs(struct of_device *dev)
 {
-	device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
-	device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
+	device_remove_file(&dev->dev, &dev_attr_probe_port);
+	device_remove_file(&dev->dev, &dev_attr_remove_port);
 }
 
-static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
+static int __devinit ehea_probe_adapter(struct of_device *dev,
 					const struct of_device_id *id)
 {
 	struct ehea_adapter *adapter;
 	const u64 *adapter_handle;
 	int ret;
 
-	if (!dev || !dev->ofdev.node) {
+	if (!dev || !dev->node) {
 		ehea_error("Invalid ibmebus device probed");
 		return -EINVAL;
 	}
@@ -2907,36 +2907,36 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 	adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
 	if (!adapter) {
 		ret = -ENOMEM;
-		dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
+		dev_err(&dev->dev, "no mem for ehea_adapter\n");
 		goto out;
 	}
 
 	list_add(&adapter->list, &adapter_list);
 
-	adapter->ebus_dev = dev;
+	adapter->ofdev = dev;
 
-	adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
+	adapter_handle = of_get_property(dev->node, "ibm,hea-handle",
 					 NULL);
 	if (adapter_handle)
 		adapter->handle = *adapter_handle;
 
 	if (!adapter->handle) {
-		dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
-			" '%s'\n", dev->ofdev.node->full_name);
+		dev_err(&dev->dev, "failed getting handle for adapter"
+			" '%s'\n", dev->node->full_name);
 		ret = -ENODEV;
 		goto out_free_ad;
 	}
 
 	adapter->pd = EHEA_PD_ID;
 
-	dev->ofdev.dev.driver_data = adapter;
+	dev->dev.driver_data = adapter;
 
 
 	/* initialize adapter and ports */
 	/* get adapter properties */
 	ret = ehea_sense_adapter_attr(adapter);
 	if (ret) {
-		dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
+		dev_err(&dev->dev, "sense_adapter_attr failed: %d", ret);
 		goto out_free_ad;
 	}
 
@@ -2944,18 +2944,18 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 				      EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
 	if (!adapter->neq) {
 		ret = -EIO;
-		dev_err(&dev->ofdev.dev, "NEQ creation failed");
+		dev_err(&dev->dev, "NEQ creation failed");
 		goto out_free_ad;
 	}
 
 	tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
 		     (unsigned long)adapter);
 
-	ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
+	ret = ibmebus_request_irq(adapter->neq->attr.ist1,
 				  ehea_interrupt_neq, IRQF_DISABLED,
 				  "ehea_neq", adapter);
 	if (ret) {
-		dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
+		dev_err(&dev->dev, "requesting NEQ IRQ failed");
 		goto out_kill_eq;
 	}
 
@@ -2971,7 +2971,7 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
 
 	ret = ehea_setup_ports(adapter);
 	if (ret) {
-		dev_err(&dev->ofdev.dev, "setup_ports failed");
+		dev_err(&dev->dev, "setup_ports failed");
 		goto out_rem_dev_sysfs;
 	}
 
@@ -2985,7 +2985,7 @@ out_kill_wq:
 	destroy_workqueue(adapter->ehea_wq);
 
 out_free_irq:
-	ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
+	ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
 
 out_kill_eq:
 	ehea_destroy_eq(adapter->neq);
@@ -2996,9 +2996,9 @@ out:
 	return ret;
 }
 
-static int __devexit ehea_remove(struct ibmebus_dev *dev)
+static int __devexit ehea_remove(struct of_device *dev)
 {
-	struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
+	struct ehea_adapter *adapter = dev->dev.driver_data;
 	int i;
 
 	for (i = 0; i < EHEA_MAX_PORTS; i++)
@@ -3011,7 +3011,7 @@ static int __devexit ehea_remove(struct ibmebus_dev *dev)
 
 	destroy_workqueue(adapter->ehea_wq);
 
-	ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
+	ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
 	tasklet_kill(&adapter->neq_tasklet);
 
 	ehea_destroy_eq(adapter->neq);
-- 
1.5.2

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Arnd Bergmann]

On Tuesday 25 September 2007, Joachim Fenkes wrote:
> Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>

This is missing a description, but the patch looks good.

	Arnd <><

Re: [PATCH 4/5] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers

[Joachim Fenkes]

Arnd Bergmann <arnd@arndb.de> wrote on 25.09.2007 16:42:40:

> This is missing a description,

The description is "ibmebus: Move to of_device and of_platform_driver, 
match eHCA and eHEA drivers" -- I thought that should be enough since the 
patch is rather straightforward. I can add a more detailed description, 
though. Revised patch will follow.

> but the patch looks good.

Thanks =)

Joachim