xen/pciback: Drop two backends, squash and cleanup some code.

 - Remove the slot and controller controller backend as they
   are not used.
 - Document the find pciback_[read|write]_config_[byte|word|dword]
   to make it easier to find.
 - Collapse the code from conf_space_capability_msi into pciback_ops.c
 - Collapse conf_space_capability_[pm|vpd].c in conf_space_capability.c
   [and remove the conf_space_capability.h file]
 - Rename all visible functions from pciback to xen_pcibk.
 - Rename all the printk/pr_info, etc that use the "pciback" to say
   "xen-pciback".
 - Convert functions that are not referenced outside the code to be
   static to save on name space.
 - Do the same thing for structures that are internal to the driver.
 - Run checkpatch.pl after the renames and fixup its warnings and
   fix any compile errors caused by the variable rename
 - Cleanup any structs that checkpath.pl commented about or just
   look odd.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

drivers/xen/xen-pciback/Makefile

@@ -3,14 +3,9 @@ obj-$(CONFIG_XEN_PCIDEV_BACKEND) += xen-pciback.o
 xen-pciback-y := pci_stub.o pciback_ops.o xenbus.o
 xen-pciback-y += conf_space.o conf_space_header.o \
 		 conf_space_capability.o \
-		 conf_space_capability_vpd.o \
-		 conf_space_capability_pm.o \
 		 conf_space_quirks.o
-xen-pciback-$(CONFIG_PCI_MSI) += conf_space_capability_msi.o
 xen-pciback-$(CONFIG_XEN_PCIDEV_BACKEND_VPCI) += vpci.o
-xen-pciback-$(CONFIG_XEN_PCIDEV_BACKEND_SLOT) += slot.o
 xen-pciback-$(CONFIG_XEN_PCIDEV_BACKEND_PASS) += passthrough.o
-xen-pciback-$(CONFIG_XEN_PCIDEV_BACKEND_CONTROLLER) += controller.o
 
 ifeq ($(CONFIG_XEN_PCIDEV_BE_DEBUG),y)
 EXTRA_CFLAGS += -DDEBUG

drivers/xen/xen-pciback/conf_space.c

@@ -15,11 +15,14 @@
 #include "conf_space.h"
 #include "conf_space_quirks.h"
 
+#define DRV_NAME	"xen-pciback"
 static int permissive;
 module_param(permissive, bool, 0644);
 
+/* This is where xen_pcibk_read_config_byte, xen_pcibk_read_config_word,
+ * xen_pcibk_write_config_word, and xen_pcibk_write_config_byte are created. */
 #define DEFINE_PCI_CONFIG(op, size, type)			\
-int pciback_##op##_config_##size				\
+int xen_pcibk_##op##_config_##size				\
 (struct pci_dev *dev, int offset, type value, void *data)	\
 {								\
 	return pci_##op##_config_##size(dev, offset, value);	\
@@ -138,11 +141,11 @@ static int pcibios_err_to_errno(int err)
 	return err;
 }
 
-int pciback_config_read(struct pci_dev *dev, int offset, int size,
-			u32 *ret_val)
+int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,
+			  u32 *ret_val)
 {
 	int err = 0;
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 	const struct config_field_entry *cfg_entry;
 	const struct config_field *field;
 	int req_start, req_end, field_start, field_end;
@@ -151,7 +154,7 @@ int pciback_config_read(struct pci_dev *dev, int offset, int size,
 	u32 value = 0, tmp_val;
 
 	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: read %d bytes at 0x%x\n",
+		printk(KERN_DEBUG DRV_NAME ": %s: read %d bytes at 0x%x\n",
 		       pci_name(dev), size, offset);
 
 	if (!valid_request(offset, size)) {
@@ -195,17 +198,17 @@ int pciback_config_read(struct pci_dev *dev, int offset, int size,
 
 out:
 	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: read %d bytes at 0x%x = %x\n",
+		printk(KERN_DEBUG DRV_NAME ": %s: read %d bytes at 0x%x = %x\n",
 		       pci_name(dev), size, offset, value);
 
 	*ret_val = value;
 	return pcibios_err_to_errno(err);
 }
 
-int pciback_config_write(struct pci_dev *dev, int offset, int size, u32 value)
+int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value)
 {
 	int err = 0, handled = 0;
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 	const struct config_field_entry *cfg_entry;
 	const struct config_field *field;
 	u32 tmp_val;
@@ -213,7 +216,7 @@ int pciback_config_write(struct pci_dev *dev, int offset, int size, u32 value)
 
 	if (unlikely(verbose_request))
 		printk(KERN_DEBUG
-		       "pciback: %s: write request %d bytes at 0x%x = %x\n",
+		       DRV_NAME ": %s: write request %d bytes at 0x%x = %x\n",
 		       pci_name(dev), size, offset, value);
 
 	if (!valid_request(offset, size))
@@ -231,7 +234,7 @@ int pciback_config_write(struct pci_dev *dev, int offset, int size, u32 value)
 		    || (req_end > field_start && req_end <= field_end)) {
 			tmp_val = 0;
 
-			err = pciback_config_read(dev, field_start,
+			err = xen_pcibk_config_read(dev, field_start,
 						  field->size, &tmp_val);
 			if (err)
 				break;
@@ -290,9 +293,9 @@ int pciback_config_write(struct pci_dev *dev, int offset, int size, u32 value)
 	return pcibios_err_to_errno(err);
 }
 
-void pciback_config_free_dyn_fields(struct pci_dev *dev)
+void xen_pcibk_config_free_dyn_fields(struct pci_dev *dev)
 {
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 	struct config_field_entry *cfg_entry, *t;
 	const struct config_field *field;
 
@@ -316,9 +319,9 @@ void pciback_config_free_dyn_fields(struct pci_dev *dev)
 	}
 }
 
-void pciback_config_reset_dev(struct pci_dev *dev)
+void xen_pcibk_config_reset_dev(struct pci_dev *dev)
 {
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 	const struct config_field_entry *cfg_entry;
 	const struct config_field *field;
 
@@ -334,9 +337,9 @@ void pciback_config_reset_dev(struct pci_dev *dev)
 	}
 }
 
-void pciback_config_free_dev(struct pci_dev *dev)
+void xen_pcibk_config_free_dev(struct pci_dev *dev)
 {
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 	struct config_field_entry *cfg_entry, *t;
 	const struct config_field *field;
 
@@ -356,12 +359,12 @@ void pciback_config_free_dev(struct pci_dev *dev)
 	}
 }
 
-int pciback_config_add_field_offset(struct pci_dev *dev,
+int xen_pcibk_config_add_field_offset(struct pci_dev *dev,
 				    const struct config_field *field,
 				    unsigned int base_offset)
 {
 	int err = 0;
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 	struct config_field_entry *cfg_entry;
 	void *tmp;
 
@@ -376,7 +379,7 @@ int pciback_config_add_field_offset(struct pci_dev *dev,
 	cfg_entry->base_offset = base_offset;
 
 	/* silently ignore duplicate fields */
-	err = pciback_field_is_dup(dev, OFFSET(cfg_entry));
+	err = xen_pcibk_field_is_dup(dev, OFFSET(cfg_entry));
 	if (err)
 		goto out;
 
@@ -406,30 +409,30 @@ out:
  * certain registers (like the base address registers (BARs) so that we can
  * keep the client from manipulating them directly.
  */
-int pciback_config_init_dev(struct pci_dev *dev)
+int xen_pcibk_config_init_dev(struct pci_dev *dev)
 {
 	int err = 0;
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 
 	dev_dbg(&dev->dev, "initializing virtual configuration space\n");
 
 	INIT_LIST_HEAD(&dev_data->config_fields);
 
-	err = pciback_config_header_add_fields(dev);
+	err = xen_pcibk_config_header_add_fields(dev);
 	if (err)
 		goto out;
 
-	err = pciback_config_capability_add_fields(dev);
+	err = xen_pcibk_config_capability_add_fields(dev);
 	if (err)
 		goto out;
 
-	err = pciback_config_quirks_init(dev);
+	err = xen_pcibk_config_quirks_init(dev);
 
 out:
 	return err;
 }
 
-int pciback_config_init(void)
+int xen_pcibk_config_init(void)
 {
-	return pciback_config_capability_init();
+	return xen_pcibk_config_capability_init();
 }

drivers/xen/xen-pciback/conf_space.h

@@ -69,35 +69,35 @@ struct config_field_entry {
 /* Add fields to a device - the add_fields macro expects to get a pointer to
  * the first entry in an array (of which the ending is marked by size==0)
  */
-int pciback_config_add_field_offset(struct pci_dev *dev,
+int xen_pcibk_config_add_field_offset(struct pci_dev *dev,
 				    const struct config_field *field,
 				    unsigned int offset);
 
-static inline int pciback_config_add_field(struct pci_dev *dev,
+static inline int xen_pcibk_config_add_field(struct pci_dev *dev,
 					   const struct config_field *field)
 {
-	return pciback_config_add_field_offset(dev, field, 0);
+	return xen_pcibk_config_add_field_offset(dev, field, 0);
 }
 
-static inline int pciback_config_add_fields(struct pci_dev *dev,
+static inline int xen_pcibk_config_add_fields(struct pci_dev *dev,
 					    const struct config_field *field)
 {
 	int i, err = 0;
 	for (i = 0; field[i].size != 0; i++) {
-		err = pciback_config_add_field(dev, &field[i]);
+		err = xen_pcibk_config_add_field(dev, &field[i]);
 		if (err)
 			break;
 	}
 	return err;
 }
 
-static inline int pciback_config_add_fields_offset(struct pci_dev *dev,
+static inline int xen_pcibk_config_add_fields_offset(struct pci_dev *dev,
 					const struct config_field *field,
 					unsigned int offset)
 {
 	int i, err = 0;
 	for (i = 0; field[i].size != 0; i++) {
-		err = pciback_config_add_field_offset(dev, &field[i], offset);
+		err = xen_pcibk_config_add_field_offset(dev, &field[i], offset);
 		if (err)
 			break;
 	}
@@ -105,22 +105,22 @@ static inline int pciback_config_add_fields_offset(struct pci_dev *dev,
 }
 
 /* Read/Write the real configuration space */
-int pciback_read_config_byte(struct pci_dev *dev, int offset, u8 *value,
-			     void *data);
-int pciback_read_config_word(struct pci_dev *dev, int offset, u16 *value,
-			     void *data);
-int pciback_read_config_dword(struct pci_dev *dev, int offset, u32 *value,
-			      void *data);
-int pciback_write_config_byte(struct pci_dev *dev, int offset, u8 value,
-			      void *data);
-int pciback_write_config_word(struct pci_dev *dev, int offset, u16 value,
-			      void *data);
-int pciback_write_config_dword(struct pci_dev *dev, int offset, u32 value,
+int xen_pcibk_read_config_byte(struct pci_dev *dev, int offset, u8 *value,
 			       void *data);
+int xen_pcibk_read_config_word(struct pci_dev *dev, int offset, u16 *value,
+			       void *data);
+int xen_pcibk_read_config_dword(struct pci_dev *dev, int offset, u32 *value,
+				void *data);
+int xen_pcibk_write_config_byte(struct pci_dev *dev, int offset, u8 value,
+				 void *data);
+int xen_pcibk_write_config_word(struct pci_dev *dev, int offset, u16 value,
+				void *data);
+int xen_pcibk_write_config_dword(struct pci_dev *dev, int offset, u32 value,
+				 void *data);
 
-int pciback_config_capability_init(void);
+int xen_pcibk_config_capability_init(void);
 
-int pciback_config_header_add_fields(struct pci_dev *dev);
-int pciback_config_capability_add_fields(struct pci_dev *dev);
+int xen_pcibk_config_header_add_fields(struct pci_dev *dev);
+int xen_pcibk_config_capability_add_fields(struct pci_dev *dev);
 
 #endif				/* __XEN_PCIBACK_CONF_SPACE_H__ */

drivers/xen/xen-pciback/conf_space_capability.c

@@ -9,29 +9,36 @@
 #include <linux/pci.h>
 #include "pciback.h"
 #include "conf_space.h"
-#include "conf_space_capability.h"
 
 static LIST_HEAD(capabilities);
+struct xen_pcibk_config_capability {
+	struct list_head cap_list;
+
+	int capability;
+
+	/* If the device has the capability found above, add these fields */
+	const struct config_field *fields;
+};
 
 static const struct config_field caplist_header[] = {
 	{
 	 .offset    = PCI_CAP_LIST_ID,
 	 .size      = 2, /* encompass PCI_CAP_LIST_ID & PCI_CAP_LIST_NEXT */
-	 .u.w.read  = pciback_read_config_word,
+	 .u.w.read  = xen_pcibk_read_config_word,
 	 .u.w.write = NULL,
 	},
 	{}
 };
 
-static inline void register_capability(struct pciback_config_capability *cap)
+static inline void register_capability(struct xen_pcibk_config_capability *cap)
 {
 	list_add_tail(&cap->cap_list, &capabilities);
 }
 
-int pciback_config_capability_add_fields(struct pci_dev *dev)
+int xen_pcibk_config_capability_add_fields(struct pci_dev *dev)
 {
 	int err = 0;
-	struct pciback_config_capability *cap;
+	struct xen_pcibk_config_capability *cap;
 	int cap_offset;
 
 	list_for_each_entry(cap, &capabilities, cap_list) {
@@ -40,12 +47,12 @@ int pciback_config_capability_add_fields(struct pci_dev *dev)
 			dev_dbg(&dev->dev, "Found capability 0x%x at 0x%x\n",
 				cap->capability, cap_offset);
 
-			err = pciback_config_add_fields_offset(dev,
+			err = xen_pcibk_config_add_fields_offset(dev,
 							       caplist_header,
 							       cap_offset);
 			if (err)
 				goto out;
-			err = pciback_config_add_fields_offset(dev,
+			err = xen_pcibk_config_add_fields_offset(dev,
 							       cap->fields,
 							       cap_offset);
 			if (err)
@@ -57,10 +64,144 @@ out:
 	return err;
 }
 
-int pciback_config_capability_init(void)
+static int vpd_address_write(struct pci_dev *dev, int offset, u16 value,
+			     void *data)
+{
+	/* Disallow writes to the vital product data */
+	if (value & PCI_VPD_ADDR_F)
+		return PCIBIOS_SET_FAILED;
+	else
+		return pci_write_config_word(dev, offset, value);
+}
+
+static const struct config_field caplist_vpd[] = {
+	{
+	 .offset    = PCI_VPD_ADDR,
+	 .size      = 2,
+	 .u.w.read  = xen_pcibk_read_config_word,
+	 .u.w.write = vpd_address_write,
+	 },
+	{
+	 .offset     = PCI_VPD_DATA,
+	 .size       = 4,
+	 .u.dw.read  = xen_pcibk_read_config_dword,
+	 .u.dw.write = NULL,
+	 },
+	{}
+};
+
+static int pm_caps_read(struct pci_dev *dev, int offset, u16 *value,
+			void *data)
+{
+	int err;
+	u16 real_value;
+
+	err = pci_read_config_word(dev, offset, &real_value);
+	if (err)
+		goto out;
+
+	*value = real_value & ~PCI_PM_CAP_PME_MASK;
+
+out:
+	return err;
+}
+
+/* PM_OK_BITS specifies the bits that the driver domain is allowed to change.
+ * Can't allow driver domain to enable PMEs - they're shared */
+#define PM_OK_BITS (PCI_PM_CTRL_PME_STATUS|PCI_PM_CTRL_DATA_SEL_MASK)
+
+static int pm_ctrl_write(struct pci_dev *dev, int offset, u16 new_value,
+			 void *data)
+{
+	int err;
+	u16 old_value;
+	pci_power_t new_state, old_state;
+
+	err = pci_read_config_word(dev, offset, &old_value);
+	if (err)
+		goto out;
+
+	old_state = (pci_power_t)(old_value & PCI_PM_CTRL_STATE_MASK);
+	new_state = (pci_power_t)(new_value & PCI_PM_CTRL_STATE_MASK);
+
+	new_value &= PM_OK_BITS;
+	if ((old_value & PM_OK_BITS) != new_value) {
+		new_value = (old_value & ~PM_OK_BITS) | new_value;
+		err = pci_write_config_word(dev, offset, new_value);
+		if (err)
+			goto out;
+	}
+
+	/* Let pci core handle the power management change */
+	dev_dbg(&dev->dev, "set power state to %x\n", new_state);
+	err = pci_set_power_state(dev, new_state);
+	if (err) {
+		err = PCIBIOS_SET_FAILED;
+		goto out;
+	}
+
+ out:
+	return err;
+}
+
+/* Ensure PMEs are disabled */
+static void *pm_ctrl_init(struct pci_dev *dev, int offset)
+{
+	int err;
+	u16 value;
+
+	err = pci_read_config_word(dev, offset, &value);
+	if (err)
+		goto out;
+
+	if (value & PCI_PM_CTRL_PME_ENABLE) {
+		value &= ~PCI_PM_CTRL_PME_ENABLE;
+		err = pci_write_config_word(dev, offset, value);
+	}
+
+out:
+	return ERR_PTR(err);
+}
+
+static const struct config_field caplist_pm[] = {
+	{
+		.offset     = PCI_PM_PMC,
+		.size       = 2,
+		.u.w.read   = pm_caps_read,
+	},
+	{
+		.offset     = PCI_PM_CTRL,
+		.size       = 2,
+		.init       = pm_ctrl_init,
+		.u.w.read   = xen_pcibk_read_config_word,
+		.u.w.write  = pm_ctrl_write,
+	},
+	{
+		.offset     = PCI_PM_PPB_EXTENSIONS,
+		.size       = 1,
+		.u.b.read   = xen_pcibk_read_config_byte,
+	},
+	{
+		.offset     = PCI_PM_DATA_REGISTER,
+		.size       = 1,
+		.u.b.read   = xen_pcibk_read_config_byte,
+	},
+	{}
+};
+
+static struct xen_pcibk_config_capability xen_pcibk_config_capability_pm = {
+	.capability = PCI_CAP_ID_PM,
+	.fields = caplist_pm,
+};
+static struct xen_pcibk_config_capability xen_pcibk_config_capability_vpd = {
+	.capability = PCI_CAP_ID_VPD,
+	.fields = caplist_vpd,
+};
+
+int xen_pcibk_config_capability_init(void)
 {
-	register_capability(&pciback_config_capability_vpd);
-	register_capability(&pciback_config_capability_pm);
+	register_capability(&xen_pcibk_config_capability_vpd);
+	register_capability(&xen_pcibk_config_capability_pm);
 
 	return 0;
 }

drivers/xen/xen-pciback/conf_space_capability.h

@@ -1,26 +0,0 @@
-/*
- * PCI Backend - Data structures for special overlays for structures on
- *               the capability list.
- *
- * Author: Ryan Wilson <hap9@epoch.ncsc.mil>
- */
-
-#ifndef __PCIBACK_CONFIG_CAPABILITY_H__
-#define __PCIBACK_CONFIG_CAPABILITY_H__
-
-#include <linux/pci.h>
-#include <linux/list.h>
-
-struct pciback_config_capability {
-	struct list_head cap_list;
-
-	int capability;
-
-	/* If the device has the capability found above, add these fields */
-	const struct config_field *fields;
-};
-
-extern struct pciback_config_capability pciback_config_capability_vpd;
-extern struct pciback_config_capability pciback_config_capability_pm;
-
-#endif

drivers/xen/xen-pciback/conf_space_capability_msi.c

@@ -1,142 +0,0 @@
-/*
- * PCI Backend -- Configuration overlay for MSI capability
- */
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include "conf_space.h"
-#include "conf_space_capability.h"
-#include <xen/interface/io/pciif.h>
-#include <xen/events.h>
-#include "pciback.h"
-
-int pciback_enable_msi(struct pciback_device *pdev,
-		struct pci_dev *dev, struct xen_pci_op *op)
-{
-	struct pciback_dev_data *dev_data;
-	int otherend = pdev->xdev->otherend_id;
-	int status;
-
-	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: enable MSI\n", pci_name(dev));
-
-	status = pci_enable_msi(dev);
-
-	if (status) {
-		printk(KERN_ERR "error enable msi for guest %x status %x\n",
-			otherend, status);
-		op->value = 0;
-		return XEN_PCI_ERR_op_failed;
-	}
-
-	/* The value the guest needs is actually the IDT vector, not the
-	 * the local domain's IRQ number. */
-
-	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
-	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: MSI: %d\n", pci_name(dev),
-			op->value);
-
-	dev_data = pci_get_drvdata(dev);
-	if (dev_data)
-		dev_data->ack_intr = 0;
-
-	return 0;
-}
-
-int pciback_disable_msi(struct pciback_device *pdev,
-		struct pci_dev *dev, struct xen_pci_op *op)
-{
-	struct pciback_dev_data *dev_data;
-
-	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: disable MSI\n", pci_name(dev));
-
-	pci_disable_msi(dev);
-
-	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
-	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: MSI: %d\n", pci_name(dev),
-			op->value);
-	dev_data = pci_get_drvdata(dev);
-	if (dev_data)
-		dev_data->ack_intr = 1;
-	return 0;
-}
-
-int pciback_enable_msix(struct pciback_device *pdev,
-		struct pci_dev *dev, struct xen_pci_op *op)
-{
-	struct pciback_dev_data *dev_data;
-	int i, result;
-	struct msix_entry *entries;
-
-	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: enable MSI-X\n",
-		       pci_name(dev));
-
-	if (op->value > SH_INFO_MAX_VEC)
-		return -EINVAL;
-
-	entries = kmalloc(op->value * sizeof(*entries), GFP_KERNEL);
-	if (entries == NULL)
-		return -ENOMEM;
-
-	for (i = 0; i < op->value; i++) {
-		entries[i].entry = op->msix_entries[i].entry;
-		entries[i].vector = op->msix_entries[i].vector;
-	}
-
-	result = pci_enable_msix(dev, entries, op->value);
-
-	if (result == 0) {
-		for (i = 0; i < op->value; i++) {
-			op->msix_entries[i].entry = entries[i].entry;
-			if (entries[i].vector)
-				op->msix_entries[i].vector =
-					xen_pirq_from_irq(entries[i].vector);
-				if (unlikely(verbose_request))
-					printk(KERN_DEBUG "pciback: %s: " \
-						"MSI-X[%d]: %d\n",
-						pci_name(dev), i,
-						op->msix_entries[i].vector);
-		}
-	} else {
-		printk(KERN_WARNING "pciback: %s: failed to enable MSI-X: err %d!\n",
-			pci_name(dev), result);
-	}
-	kfree(entries);
-
-	op->value = result;
-	dev_data = pci_get_drvdata(dev);
-	if (dev_data)
-		dev_data->ack_intr = 0;
-
-	return result;
-}
-
-int pciback_disable_msix(struct pciback_device *pdev,
-		struct pci_dev *dev, struct xen_pci_op *op)
-{
-	struct pciback_dev_data *dev_data;
-
-	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: disable MSI-X\n",
-		       pci_name(dev));
-
-	pci_disable_msix(dev);
-
-	/*
-	 * SR-IOV devices (which don't have any legacy IRQ) have
-	 * an undefined IRQ value of zero.
-	 */
-	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
-	if (unlikely(verbose_request))
-		printk(KERN_DEBUG "pciback: %s: MSI-X: %d\n", pci_name(dev),
-			op->value);
-	dev_data = pci_get_drvdata(dev);
-	if (dev_data)
-		dev_data->ack_intr = 1;
-
-	return 0;
-}
-

drivers/xen/xen-pciback/conf_space_capability_pm.c

@@ -1,113 +0,0 @@
-/*
- * PCI Backend - Configuration space overlay for power management
- *
- * Author: Ryan Wilson <hap9@epoch.ncsc.mil>
- */
-
-#include <linux/pci.h>
-#include "conf_space.h"
-#include "conf_space_capability.h"
-
-static int pm_caps_read(struct pci_dev *dev, int offset, u16 *value,
-			void *data)
-{
-	int err;
-	u16 real_value;
-
-	err = pci_read_config_word(dev, offset, &real_value);
-	if (err)
-		goto out;
-
-	*value = real_value & ~PCI_PM_CAP_PME_MASK;
-
-out:
-	return err;
-}
-
-/* PM_OK_BITS specifies the bits that the driver domain is allowed to change.
- * Can't allow driver domain to enable PMEs - they're shared */
-#define PM_OK_BITS (PCI_PM_CTRL_PME_STATUS|PCI_PM_CTRL_DATA_SEL_MASK)
-
-static int pm_ctrl_write(struct pci_dev *dev, int offset, u16 new_value,
-			 void *data)
-{
-	int err;
-	u16 old_value;
-	pci_power_t new_state, old_state;
-
-	err = pci_read_config_word(dev, offset, &old_value);
-	if (err)
-		goto out;
-
-	old_state = (pci_power_t)(old_value & PCI_PM_CTRL_STATE_MASK);
-	new_state = (pci_power_t)(new_value & PCI_PM_CTRL_STATE_MASK);
-
-	new_value &= PM_OK_BITS;
-	if ((old_value & PM_OK_BITS) != new_value) {
-		new_value = (old_value & ~PM_OK_BITS) | new_value;
-		err = pci_write_config_word(dev, offset, new_value);
-		if (err)
-			goto out;
-	}
-
-	/* Let pci core handle the power management change */
-	dev_dbg(&dev->dev, "set power state to %x\n", new_state);
-	err = pci_set_power_state(dev, new_state);
-	if (err) {
-		err = PCIBIOS_SET_FAILED;
-		goto out;
-	}
-
- out:
-	return err;
-}
-
-/* Ensure PMEs are disabled */
-static void *pm_ctrl_init(struct pci_dev *dev, int offset)
-{
-	int err;
-	u16 value;
-
-	err = pci_read_config_word(dev, offset, &value);
-	if (err)
-		goto out;
-
-	if (value & PCI_PM_CTRL_PME_ENABLE) {
-		value &= ~PCI_PM_CTRL_PME_ENABLE;
-		err = pci_write_config_word(dev, offset, value);
-	}
-
-out:
-	return ERR_PTR(err);
-}
-
-static const struct config_field caplist_pm[] = {
-	{
-		.offset     = PCI_PM_PMC,
-		.size       = 2,
-		.u.w.read   = pm_caps_read,
-	},
-	{
-		.offset     = PCI_PM_CTRL,
-		.size       = 2,
-		.init       = pm_ctrl_init,
-		.u.w.read   = pciback_read_config_word,
-		.u.w.write  = pm_ctrl_write,
-	},
-	{
-		.offset     = PCI_PM_PPB_EXTENSIONS,
-		.size       = 1,
-		.u.b.read   = pciback_read_config_byte,
-	},
-	{
-		.offset     = PCI_PM_DATA_REGISTER,
-		.size       = 1,
-		.u.b.read   = pciback_read_config_byte,
-	},
-	{}
-};
-
-struct pciback_config_capability pciback_config_capability_pm = {
-	.capability = PCI_CAP_ID_PM,
-	.fields = caplist_pm,
-};

drivers/xen/xen-pciback/conf_space_capability_vpd.c

@@ -1,40 +0,0 @@
-/*
- * PCI Backend - Configuration space overlay for Vital Product Data
- *
- * Author: Ryan Wilson <hap9@epoch.ncsc.mil>
- */
-
-#include <linux/pci.h>
-#include "conf_space.h"
-#include "conf_space_capability.h"
-
-static int vpd_address_write(struct pci_dev *dev, int offset, u16 value,
-			     void *data)
-{
-	/* Disallow writes to the vital product data */
-	if (value & PCI_VPD_ADDR_F)
-		return PCIBIOS_SET_FAILED;
-	else
-		return pci_write_config_word(dev, offset, value);
-}
-
-static const struct config_field caplist_vpd[] = {
-	{
-	 .offset    = PCI_VPD_ADDR,
-	 .size      = 2,
-	 .u.w.read  = pciback_read_config_word,
-	 .u.w.write = vpd_address_write,
-	 },
-	{
-	 .offset     = PCI_VPD_DATA,
-	 .size       = 4,
-	 .u.dw.read  = pciback_read_config_dword,
-	 .u.dw.write = NULL,
-	 },
-	{}
-};
-
-struct pciback_config_capability pciback_config_capability_vpd = {
-	.capability = PCI_CAP_ID_VPD,
-	.fields = caplist_vpd,
-};

drivers/xen/xen-pciback/conf_space_header.c

@@ -15,6 +15,7 @@ struct pci_bar_info {
 	int which;
 };
 
+#define DRV_NAME	"xen-pciback"
 #define is_enable_cmd(value) ((value)&(PCI_COMMAND_MEMORY|PCI_COMMAND_IO))
 #define is_master_cmd(value) ((value)&PCI_COMMAND_MASTER)
 
@@ -23,7 +24,7 @@ static int command_read(struct pci_dev *dev, int offset, u16 *value, void *data)
 	int i;
 	int ret;
 
-	ret = pciback_read_config_word(dev, offset, value, data);
+	ret = xen_pcibk_read_config_word(dev, offset, value, data);
 	if (!atomic_read(&dev->enable_cnt))
 		return ret;
 
@@ -39,13 +40,13 @@ static int command_read(struct pci_dev *dev, int offset, u16 *value, void *data)
 
 static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)
 {
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_dev_data *dev_data;
 	int err;
 
 	dev_data = pci_get_drvdata(dev);
 	if (!pci_is_enabled(dev) && is_enable_cmd(value)) {
 		if (unlikely(verbose_request))
-			printk(KERN_DEBUG "pciback: %s: enable\n",
+			printk(KERN_DEBUG DRV_NAME ": %s: enable\n",
 			       pci_name(dev));
 		err = pci_enable_device(dev);
 		if (err)
@@ -54,7 +55,7 @@ static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)
 			dev_data->enable_intx = 1;
 	} else if (pci_is_enabled(dev) && !is_enable_cmd(value)) {
 		if (unlikely(verbose_request))
-			printk(KERN_DEBUG "pciback: %s: disable\n",
+			printk(KERN_DEBUG DRV_NAME ": %s: disable\n",
 			       pci_name(dev));
 		pci_disable_device(dev);
 		if (dev_data)
@@ -63,7 +64,7 @@ static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)
 
 	if (!dev->is_busmaster && is_master_cmd(value)) {
 		if (unlikely(verbose_request))
-			printk(KERN_DEBUG "pciback: %s: set bus master\n",
+			printk(KERN_DEBUG DRV_NAME ": %s: set bus master\n",
 			       pci_name(dev));
 		pci_set_master(dev);
 	}
@@ -71,12 +72,12 @@ static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)
 	if (value & PCI_COMMAND_INVALIDATE) {
 		if (unlikely(verbose_request))
 			printk(KERN_DEBUG
-			       "pciback: %s: enable memory-write-invalidate\n",
+			       DRV_NAME ": %s: enable memory-write-invalidate\n",
 			       pci_name(dev));
 		err = pci_set_mwi(dev);
 		if (err) {
 			printk(KERN_WARNING
-			       "pciback: %s: cannot enable "
+			       DRV_NAME ": %s: cannot enable "
 			       "memory-write-invalidate (%d)\n",
 			       pci_name(dev), err);
 			value &= ~PCI_COMMAND_INVALIDATE;
@@ -91,7 +92,7 @@ static int rom_write(struct pci_dev *dev, int offset, u32 value, void *data)
 	struct pci_bar_info *bar = data;
 
 	if (unlikely(!bar)) {
-		printk(KERN_WARNING "pciback: driver data not found for %s\n",
+		printk(KERN_WARNING DRV_NAME ": driver data not found for %s\n",
 		       pci_name(dev));
 		return XEN_PCI_ERR_op_failed;
 	}
@@ -125,7 +126,7 @@ static int bar_write(struct pci_dev *dev, int offset, u32 value, void *data)
 	struct pci_bar_info *bar = data;
 
 	if (unlikely(!bar)) {
-		printk(KERN_WARNING "pciback: driver data not found for %s\n",
+		printk(KERN_WARNING DRV_NAME ": driver data not found for %s\n",
 		       pci_name(dev));
 		return XEN_PCI_ERR_op_failed;
 	}
@@ -153,7 +154,7 @@ static int bar_read(struct pci_dev *dev, int offset, u32 * value, void *data)
 	struct pci_bar_info *bar = data;
 
 	if (unlikely(!bar)) {
-		printk(KERN_WARNING "pciback: driver data not found for %s\n",
+		printk(KERN_WARNING DRV_NAME ": driver data not found for %s\n",
 		       pci_name(dev));
 		return XEN_PCI_ERR_op_failed;
 	}
@@ -227,7 +228,7 @@ static void bar_release(struct pci_dev *dev, int offset, void *data)
 	kfree(data);
 }
 
-static int pciback_read_vendor(struct pci_dev *dev, int offset,
+static int xen_pcibk_read_vendor(struct pci_dev *dev, int offset,
 			       u16 *value, void *data)
 {
 	*value = dev->vendor;
@@ -235,7 +236,7 @@ static int pciback_read_vendor(struct pci_dev *dev, int offset,
 	return 0;
 }
 
-static int pciback_read_device(struct pci_dev *dev, int offset,
+static int xen_pcibk_read_device(struct pci_dev *dev, int offset,
 			       u16 *value, void *data)
 {
 	*value = dev->device;
@@ -272,12 +273,12 @@ static const struct config_field header_common[] = {
 	{
 	 .offset    = PCI_VENDOR_ID,
 	 .size      = 2,
-	 .u.w.read  = pciback_read_vendor,
+	 .u.w.read  = xen_pcibk_read_vendor,
 	},
 	{
 	 .offset    = PCI_DEVICE_ID,
 	 .size      = 2,
-	 .u.w.read  = pciback_read_device,
+	 .u.w.read  = xen_pcibk_read_device,
 	},
 	{
 	 .offset    = PCI_COMMAND,
@@ -293,24 +294,24 @@ static const struct config_field header_common[] = {
 	{
 	 .offset    = PCI_INTERRUPT_PIN,
 	 .size      = 1,
-	 .u.b.read  = pciback_read_config_byte,
+	 .u.b.read  = xen_pcibk_read_config_byte,
 	},
 	{
 	 /* Any side effects of letting driver domain control cache line? */
 	 .offset    = PCI_CACHE_LINE_SIZE,
 	 .size      = 1,
-	 .u.b.read  = pciback_read_config_byte,
-	 .u.b.write = pciback_write_config_byte,
+	 .u.b.read  = xen_pcibk_read_config_byte,
+	 .u.b.write = xen_pcibk_write_config_byte,
 	},
 	{
 	 .offset    = PCI_LATENCY_TIMER,
 	 .size      = 1,
-	 .u.b.read  = pciback_read_config_byte,
+	 .u.b.read  = xen_pcibk_read_config_byte,
 	},
 	{
 	 .offset    = PCI_BIST,
 	 .size      = 1,
-	 .u.b.read  = pciback_read_config_byte,
+	 .u.b.read  = xen_pcibk_read_config_byte,
 	 .u.b.write = bist_write,
 	},
 	{}
@@ -356,26 +357,26 @@ static const struct config_field header_1[] = {
 	{}
 };
 
-int pciback_config_header_add_fields(struct pci_dev *dev)
+int xen_pcibk_config_header_add_fields(struct pci_dev *dev)
 {
 	int err;
 
-	err = pciback_config_add_fields(dev, header_common);
+	err = xen_pcibk_config_add_fields(dev, header_common);
 	if (err)
 		goto out;
 
 	switch (dev->hdr_type) {
 	case PCI_HEADER_TYPE_NORMAL:
-		err = pciback_config_add_fields(dev, header_0);
+		err = xen_pcibk_config_add_fields(dev, header_0);
 		break;
 
 	case PCI_HEADER_TYPE_BRIDGE:
-		err = pciback_config_add_fields(dev, header_1);
+		err = xen_pcibk_config_add_fields(dev, header_1);
 		break;
 
 	default:
 		err = -EINVAL;
-		printk(KERN_ERR "pciback: %s: Unsupported header type %d!\n",
+		printk(KERN_ERR DRV_NAME ": %s: Unsupported header type %d!\n",
 		       pci_name(dev), dev->hdr_type);
 		break;
 	}

drivers/xen/xen-pciback/conf_space_quirks.c

@@ -11,8 +11,8 @@
 #include "conf_space.h"
 #include "conf_space_quirks.h"
 
-LIST_HEAD(pciback_quirks);
-
+LIST_HEAD(xen_pcibk_quirks);
+#define	DRV_NAME	"xen-pciback"
 static inline const struct pci_device_id *
 match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
 {
@@ -27,29 +27,29 @@ match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
 	return NULL;
 }
 
-struct pciback_config_quirk *pciback_find_quirk(struct pci_dev *dev)
+static struct xen_pcibk_config_quirk *xen_pcibk_find_quirk(struct pci_dev *dev)
 {
-	struct pciback_config_quirk *tmp_quirk;
+	struct xen_pcibk_config_quirk *tmp_quirk;
 
-	list_for_each_entry(tmp_quirk, &pciback_quirks, quirks_list)
+	list_for_each_entry(tmp_quirk, &xen_pcibk_quirks, quirks_list)
 		if (match_one_device(&tmp_quirk->devid, dev) != NULL)
 			goto out;
 	tmp_quirk = NULL;
-	printk(KERN_DEBUG
-	       "quirk didn't match any device pciback knows about\n");
+	printk(KERN_DEBUG DRV_NAME
+	       ":quirk didn't match any device xen_pciback knows about\n");
 out:
 	return tmp_quirk;
 }
 
-static inline void register_quirk(struct pciback_config_quirk *quirk)
+static inline void register_quirk(struct xen_pcibk_config_quirk *quirk)
 {
-	list_add_tail(&quirk->quirks_list, &pciback_quirks);
+	list_add_tail(&quirk->quirks_list, &xen_pcibk_quirks);
 }
 
-int pciback_field_is_dup(struct pci_dev *dev, unsigned int reg)
+int xen_pcibk_field_is_dup(struct pci_dev *dev, unsigned int reg)
 {
 	int ret = 0;
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 	struct config_field_entry *cfg_entry;
 
 	list_for_each_entry(cfg_entry, &dev_data->config_fields, list) {
@@ -61,38 +61,38 @@ int pciback_field_is_dup(struct pci_dev *dev, unsigned int reg)
 	return ret;
 }
 
-int pciback_config_quirks_add_field(struct pci_dev *dev, struct config_field
+int xen_pcibk_config_quirks_add_field(struct pci_dev *dev, struct config_field
 				    *field)
 {
 	int err = 0;
 
 	switch (field->size) {
 	case 1:
-		field->u.b.read = pciback_read_config_byte;
-		field->u.b.write = pciback_write_config_byte;
+		field->u.b.read = xen_pcibk_read_config_byte;
+		field->u.b.write = xen_pcibk_write_config_byte;
 		break;
 	case 2:
-		field->u.w.read = pciback_read_config_word;
-		field->u.w.write = pciback_write_config_word;
+		field->u.w.read = xen_pcibk_read_config_word;
+		field->u.w.write = xen_pcibk_write_config_word;
 		break;
 	case 4:
-		field->u.dw.read = pciback_read_config_dword;
-		field->u.dw.write = pciback_write_config_dword;
+		field->u.dw.read = xen_pcibk_read_config_dword;
+		field->u.dw.write = xen_pcibk_write_config_dword;
 		break;
 	default:
 		err = -EINVAL;
 		goto out;
 	}
 
-	pciback_config_add_field(dev, field);
+	xen_pcibk_config_add_field(dev, field);
 
 out:
 	return err;
 }
 
-int pciback_config_quirks_init(struct pci_dev *dev)
+int xen_pcibk_config_quirks_init(struct pci_dev *dev)
 {
-	struct pciback_config_quirk *quirk;
+	struct xen_pcibk_config_quirk *quirk;
 	int ret = 0;
 
 	quirk = kzalloc(sizeof(*quirk), GFP_ATOMIC);
@@ -116,17 +116,17 @@ out:
 	return ret;
 }
 
-void pciback_config_field_free(struct config_field *field)
+void xen_pcibk_config_field_free(struct config_field *field)
 {
 	kfree(field);
 }
 
-int pciback_config_quirk_release(struct pci_dev *dev)
+int xen_pcibk_config_quirk_release(struct pci_dev *dev)
 {
-	struct pciback_config_quirk *quirk;
+	struct xen_pcibk_config_quirk *quirk;
 	int ret = 0;
 
-	quirk = pciback_find_quirk(dev);
+	quirk = xen_pcibk_find_quirk(dev);
 	if (!quirk) {
 		ret = -ENXIO;
 		goto out;

drivers/xen/xen-pciback/conf_space_quirks.h

@@ -11,25 +11,23 @@
 #include <linux/pci.h>
 #include <linux/list.h>
 
-struct pciback_config_quirk {
+struct xen_pcibk_config_quirk {
 	struct list_head quirks_list;
 	struct pci_device_id devid;
 	struct pci_dev *pdev;
 };
 
-struct pciback_config_quirk *pciback_find_quirk(struct pci_dev *dev);
-
-int pciback_config_quirks_add_field(struct pci_dev *dev, struct config_field
+int xen_pcibk_config_quirks_add_field(struct pci_dev *dev, struct config_field
 				    *field);
 
-int pciback_config_quirks_remove_field(struct pci_dev *dev, int reg);
+int xen_pcibk_config_quirks_remove_field(struct pci_dev *dev, int reg);
 
-int pciback_config_quirks_init(struct pci_dev *dev);
+int xen_pcibk_config_quirks_init(struct pci_dev *dev);
 
-void pciback_config_field_free(struct config_field *field);
+void xen_pcibk_config_field_free(struct config_field *field);
 
-int pciback_config_quirk_release(struct pci_dev *dev);
+int xen_pcibk_config_quirk_release(struct pci_dev *dev);
 
-int pciback_field_is_dup(struct pci_dev *dev, unsigned int reg);
+int xen_pcibk_field_is_dup(struct pci_dev *dev, unsigned int reg);
 
 #endif

drivers/xen/xen-pciback/controller.c

@@ -1,442 +0,0 @@
-/*
- * Copyright (C) 2007 Hewlett-Packard Development Company, L.P.
- *      Alex Williamson <alex.williamson@hp.com>
- *
- * PCI "Controller" Backend - virtualize PCI bus topology based on PCI
- * controllers.  Devices under the same PCI controller are exposed on the
- * same virtual domain:bus.  Within a bus, device slots are virtualized
- * to compact the bus.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/acpi.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <linux/spinlock.h>
-#include "pciback.h"
-
-#define PCI_MAX_BUSSES	255
-#define PCI_MAX_SLOTS	32
-
-struct controller_dev_entry {
-	struct list_head list;
-	struct pci_dev *dev;
-	unsigned int devfn;
-};
-
-struct controller_list_entry {
-	struct list_head list;
-	struct pci_controller *controller;
-	unsigned int domain;
-	unsigned int bus;
-	unsigned int next_devfn;
-	struct list_head dev_list;
-};
-
-struct controller_dev_data {
-	struct list_head list;
-	unsigned int next_domain;
-	unsigned int next_bus;
-	spinlock_t lock;
-};
-
-struct walk_info {
-	struct pciback_device *pdev;
-	int resource_count;
-	int root_num;
-};
-
-struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
-				    unsigned int domain, unsigned int bus,
-				    unsigned int devfn)
-{
-	struct controller_dev_data *dev_data = pdev->pci_dev_data;
-	struct controller_dev_entry *dev_entry;
-	struct controller_list_entry *cntrl_entry;
-	struct pci_dev *dev = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev_data->lock, flags);
-
-	list_for_each_entry(cntrl_entry, &dev_data->list, list) {
-		if (cntrl_entry->domain != domain ||
-		    cntrl_entry->bus != bus)
-			continue;
-
-		list_for_each_entry(dev_entry, &cntrl_entry->dev_list, list) {
-			if (devfn == dev_entry->devfn) {
-				dev = dev_entry->dev;
-				goto found;
-			}
-		}
-	}
-found:
-	spin_unlock_irqrestore(&dev_data->lock, flags);
-
-	return dev;
-}
-
-int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
-			int devid, publish_pci_dev_cb publish_cb)
-{
-	struct controller_dev_data *dev_data = pdev->pci_dev_data;
-	struct controller_dev_entry *dev_entry;
-	struct controller_list_entry *cntrl_entry;
-	struct pci_controller *dev_controller = PCI_CONTROLLER(dev);
-	unsigned long flags;
-	int ret = 0, found = 0;
-
-	spin_lock_irqsave(&dev_data->lock, flags);
-
-	/* Look to see if we already have a domain:bus for this controller */
-	list_for_each_entry(cntrl_entry, &dev_data->list, list) {
-		if (cntrl_entry->controller == dev_controller) {
-			found = 1;
-			break;
-		}
-	}
-
-	if (!found) {
-		cntrl_entry = kmalloc(sizeof(*cntrl_entry), GFP_ATOMIC);
-		if (!cntrl_entry) {
-			ret =  -ENOMEM;
-			goto out;
-		}
-
-		cntrl_entry->controller = dev_controller;
-		cntrl_entry->next_devfn = PCI_DEVFN(0, 0);
-
-		cntrl_entry->domain = dev_data->next_domain;
-		cntrl_entry->bus = dev_data->next_bus++;
-		if (dev_data->next_bus > PCI_MAX_BUSSES) {
-			dev_data->next_domain++;
-			dev_data->next_bus = 0;
-		}
-
-		INIT_LIST_HEAD(&cntrl_entry->dev_list);
-
-		list_add_tail(&cntrl_entry->list, &dev_data->list);
-	}
-
-	if (PCI_SLOT(cntrl_entry->next_devfn) > PCI_MAX_SLOTS) {
-		/*
-		 * While it seems unlikely, this can actually happen if
-		 * a controller has P2P bridges under it.
-		 */
-		xenbus_dev_fatal(pdev->xdev, -ENOSPC, "Virtual bus %04x:%02x "
-				 "is full, no room to export %04x:%02x:%02x.%x",
-				 cntrl_entry->domain, cntrl_entry->bus,
-				 pci_domain_nr(dev->bus), dev->bus->number,
-				 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
-		ret = -ENOSPC;
-		goto out;
-	}
-
-	dev_entry = kmalloc(sizeof(*dev_entry), GFP_ATOMIC);
-	if (!dev_entry) {
-		if (list_empty(&cntrl_entry->dev_list)) {
-			list_del(&cntrl_entry->list);
-			kfree(cntrl_entry);
-		}
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	dev_entry->dev = dev;
-	dev_entry->devfn = cntrl_entry->next_devfn;
-
-	list_add_tail(&dev_entry->list, &cntrl_entry->dev_list);
-
-	cntrl_entry->next_devfn += PCI_DEVFN(1, 0);
-
-out:
-	spin_unlock_irqrestore(&dev_data->lock, flags);
-
-	/* TODO: Publish virtual domain:bus:slot.func here. */
-
-	return ret;
-}
-
-void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev)
-{
-	struct controller_dev_data *dev_data = pdev->pci_dev_data;
-	struct controller_list_entry *cntrl_entry;
-	struct controller_dev_entry *dev_entry = NULL;
-	struct pci_dev *found_dev = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev_data->lock, flags);
-
-	list_for_each_entry(cntrl_entry, &dev_data->list, list) {
-		if (cntrl_entry->controller != PCI_CONTROLLER(dev))
-			continue;
-
-		list_for_each_entry(dev_entry, &cntrl_entry->dev_list, list) {
-			if (dev_entry->dev == dev) {
-				found_dev = dev_entry->dev;
-				break;
-			}
-		}
-	}
-
-	if (!found_dev) {
-		spin_unlock_irqrestore(&dev_data->lock, flags);
-		return;
-	}
-
-	list_del(&dev_entry->list);
-	kfree(dev_entry);
-
-	if (list_empty(&cntrl_entry->dev_list)) {
-		list_del(&cntrl_entry->list);
-		kfree(cntrl_entry);
-	}
-
-	spin_unlock_irqrestore(&dev_data->lock, flags);
-	pcistub_put_pci_dev(found_dev);
-}
-
-int pciback_init_devices(struct pciback_device *pdev)
-{
-	struct controller_dev_data *dev_data;
-
-	dev_data = kmalloc(sizeof(*dev_data), GFP_KERNEL);
-	if (!dev_data)
-		return -ENOMEM;
-
-	spin_lock_init(&dev_data->lock);
-
-	INIT_LIST_HEAD(&dev_data->list);
-
-	/* Starting domain:bus numbers */
-	dev_data->next_domain = 0;
-	dev_data->next_bus = 0;
-
-	pdev->pci_dev_data = dev_data;
-
-	return 0;
-}
-
-static acpi_status write_xenbus_resource(struct acpi_resource *res, void *data)
-{
-	struct walk_info *info = data;
-	struct acpi_resource_address64 addr;
-	acpi_status status;
-	int i, len, err;
-	char str[32], tmp[3];
-	unsigned char *ptr, *buf;
-
-	status = acpi_resource_to_address64(res, &addr);
-
-	/* Do we care about this range?  Let's check. */
-	if (!ACPI_SUCCESS(status) ||
-	    !(addr.resource_type == ACPI_MEMORY_RANGE ||
-	      addr.resource_type == ACPI_IO_RANGE) ||
-	    !addr.address_length || addr.producer_consumer != ACPI_PRODUCER)
-		return AE_OK;
-
-	/*
-	 * Furthermore, we really only care to tell the guest about
-	 * address ranges that require address translation of some sort.
-	 */
-	if (!(addr.resource_type == ACPI_MEMORY_RANGE &&
-	      addr.info.mem.translation) &&
-	    !(addr.resource_type == ACPI_IO_RANGE &&
-	      addr.info.io.translation))
-		return AE_OK;
-
-	/* Store the resource in xenbus for the guest */
-	len = snprintf(str, sizeof(str), "root-%d-resource-%d",
-		       info->root_num, info->resource_count);
-	if (unlikely(len >= (sizeof(str) - 1)))
-		return AE_OK;
-
-	buf = kzalloc((sizeof(*res) * 2) + 1, GFP_KERNEL);
-	if (!buf)
-		return AE_OK;
-
-	/* Clean out resource_source */
-	res->data.address64.resource_source.index = 0xFF;
-	res->data.address64.resource_source.string_length = 0;
-	res->data.address64.resource_source.string_ptr = NULL;
-
-	ptr = (unsigned char *)res;
-
-	/* Turn the acpi_resource into an ASCII byte stream */
-	for (i = 0; i < sizeof(*res); i++) {
-		snprintf(tmp, sizeof(tmp), "%02x", ptr[i]);
-		strncat(buf, tmp, 2);
-	}
-
-	err = xenbus_printf(XBT_NIL, info->pdev->xdev->nodename,
-			    str, "%s", buf);
-
-	if (!err)
-		info->resource_count++;
-
-	kfree(buf);
-
-	return AE_OK;
-}
-
-int pciback_publish_pci_roots(struct pciback_device *pdev,
-			      publish_pci_root_cb publish_root_cb)
-{
-	struct controller_dev_data *dev_data = pdev->pci_dev_data;
-	struct controller_list_entry *cntrl_entry;
-	int i, root_num, len, err = 0;
-	unsigned int domain, bus;
-	char str[64];
-	struct walk_info info;
-
-	spin_lock(&dev_data->lock);
-
-	list_for_each_entry(cntrl_entry, &dev_data->list, list) {
-		/* First publish all the domain:bus info */
-		err = publish_root_cb(pdev, cntrl_entry->domain,
-				      cntrl_entry->bus);
-		if (err)
-			goto out;
-
-		/*
-		 * Now figure out which root-%d this belongs to
-		 * so we can associate resources with it.
-		 */
-		err = xenbus_scanf(XBT_NIL, pdev->xdev->nodename,
-				   "root_num", "%d", &root_num);
-
-		if (err != 1)
-			goto out;
-
-		for (i = 0; i < root_num; i++) {
-			len = snprintf(str, sizeof(str), "root-%d", i);
-			if (unlikely(len >= (sizeof(str) - 1))) {
-				err = -ENOMEM;
-				goto out;
-			}
-
-			err = xenbus_scanf(XBT_NIL, pdev->xdev->nodename,
-					   str, "%x:%x", &domain, &bus);
-			if (err != 2)
-				goto out;
-
-			/* Is this the one we just published? */
-			if (domain == cntrl_entry->domain &&
-			    bus == cntrl_entry->bus)
-				break;
-		}
-
-		if (i == root_num)
-			goto out;
-
-		info.pdev = pdev;
-		info.resource_count = 0;
-		info.root_num = i;
-
-		/* Let ACPI do the heavy lifting on decoding resources */
-		acpi_walk_resources(cntrl_entry->controller->acpi_handle,
-				    METHOD_NAME__CRS, write_xenbus_resource,
-				    &info);
-
-		/* No resouces.  OK.  On to the next one */
-		if (!info.resource_count)
-			continue;
-
-		/* Store the number of resources we wrote for this root-%d */
-		len = snprintf(str, sizeof(str), "root-%d-resources", i);
-		if (unlikely(len >= (sizeof(str) - 1))) {
-			err = -ENOMEM;
-			goto out;
-		}
-
-		err = xenbus_printf(XBT_NIL, pdev->xdev->nodename, str,
-				    "%d", info.resource_count);
-		if (err)
-			goto out;
-	}
-
-	/* Finally, write some magic to synchronize with the guest. */
-	len = snprintf(str, sizeof(str), "root-resource-magic");
-	if (unlikely(len >= (sizeof(str) - 1))) {
-		err = -ENOMEM;
-		goto out;
-	}
-
-	err = xenbus_printf(XBT_NIL, pdev->xdev->nodename, str,
-			    "%lx", (sizeof(struct acpi_resource) * 2) + 1);
-
-out:
-	spin_unlock(&dev_data->lock);
-
-	return err;
-}
-
-void pciback_release_devices(struct pciback_device *pdev)
-{
-	struct controller_dev_data *dev_data = pdev->pci_dev_data;
-	struct controller_list_entry *cntrl_entry, *c;
-	struct controller_dev_entry *dev_entry, *d;
-
-	list_for_each_entry_safe(cntrl_entry, c, &dev_data->list, list) {
-		list_for_each_entry_safe(dev_entry, d,
-					 &cntrl_entry->dev_list, list) {
-			list_del(&dev_entry->list);
-			pcistub_put_pci_dev(dev_entry->dev);
-			kfree(dev_entry);
-		}
-		list_del(&cntrl_entry->list);
-		kfree(cntrl_entry);
-	}
-
-	kfree(dev_data);
-	pdev->pci_dev_data = NULL;
-}
-
-int pciback_get_pcifront_dev(struct pci_dev *pcidev,
-		struct pciback_device *pdev,
-		unsigned int *domain, unsigned int *bus, unsigned int *devfn)
-{
-	struct controller_dev_data *dev_data = pdev->pci_dev_data;
-	struct controller_dev_entry *dev_entry;
-	struct controller_list_entry *cntrl_entry;
-	unsigned long flags;
-	int found = 0;
-	spin_lock_irqsave(&dev_data->lock, flags);
-
-	list_for_each_entry(cntrl_entry, &dev_data->list, list) {
-		list_for_each_entry(dev_entry, &cntrl_entry->dev_list, list) {
-			if ((dev_entry->dev->bus->number ==
-					pcidev->bus->number) &&
-				(dev_entry->dev->devfn ==
-					pcidev->devfn) &&
-				(pci_domain_nr(dev_entry->dev->bus) ==
-					pci_domain_nr(pcidev->bus))) {
-				found = 1;
-				*domain = cntrl_entry->domain;
-				*bus = cntrl_entry->bus;
-				*devfn = dev_entry->devfn;
-				goto out;
-			}
-		}
-	}
-out:
-	spin_unlock_irqrestore(&dev_data->lock, flags);
-	return found;
-
-}
-

drivers/xen/xen-pciback/passthrough.c

@@ -16,9 +16,9 @@ struct passthrough_dev_data {
 	spinlock_t lock;
 };
 
-struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
-				    unsigned int domain, unsigned int bus,
-				    unsigned int devfn)
+struct pci_dev *xen_pcibk_get_pci_dev(struct xen_pcibk_device *pdev,
+				      unsigned int domain, unsigned int bus,
+				      unsigned int devfn)
 {
 	struct passthrough_dev_data *dev_data = pdev->pci_dev_data;
 	struct pci_dev_entry *dev_entry;
@@ -41,8 +41,8 @@ struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
 	return dev;
 }
 
-int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
-			int devid, publish_pci_dev_cb publish_cb)
+int xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev, struct pci_dev *dev,
+			  int devid, publish_pci_dev_cb publish_cb)
 {
 	struct passthrough_dev_data *dev_data = pdev->pci_dev_data;
 	struct pci_dev_entry *dev_entry;
@@ -68,7 +68,8 @@ int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
 	return err;
 }
 
-void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev)
+void xen_pcibk_release_pci_dev(struct xen_pcibk_device *pdev,
+			       struct pci_dev *dev)
 {
 	struct passthrough_dev_data *dev_data = pdev->pci_dev_data;
 	struct pci_dev_entry *dev_entry, *t;
@@ -91,7 +92,7 @@ void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev)
 		pcistub_put_pci_dev(found_dev);
 }
 
-int pciback_init_devices(struct pciback_device *pdev)
+int xen_pcibk_init_devices(struct xen_pcibk_device *pdev)
 {
 	struct passthrough_dev_data *dev_data;
 
@@ -108,8 +109,8 @@ int pciback_init_devices(struct pciback_device *pdev)
 	return 0;
 }
 
-int pciback_publish_pci_roots(struct pciback_device *pdev,
-			      publish_pci_root_cb publish_root_cb)
+int xen_pcibk_publish_pci_roots(struct xen_pcibk_device *pdev,
+				publish_pci_root_cb publish_root_cb)
 {
 	int err = 0;
 	struct passthrough_dev_data *dev_data = pdev->pci_dev_data;
@@ -153,7 +154,7 @@ int pciback_publish_pci_roots(struct pciback_device *pdev,
 	return err;
 }
 
-void pciback_release_devices(struct pciback_device *pdev)
+void xen_pcibk_release_devices(struct xen_pcibk_device *pdev)
 {
 	struct passthrough_dev_data *dev_data = pdev->pci_dev_data;
 	struct pci_dev_entry *dev_entry, *t;
@@ -168,11 +169,10 @@ void pciback_release_devices(struct pciback_device *pdev)
 	pdev->pci_dev_data = NULL;
 }
 
-int pciback_get_pcifront_dev(struct pci_dev *pcidev,
-			     struct pciback_device *pdev,
-			     unsigned int *domain, unsigned int *bus,
-			     unsigned int *devfn)
-
+int xen_pcibk_get_pcifront_dev(struct pci_dev *pcidev,
+			       struct xen_pcibk_device *pdev,
+			       unsigned int *domain, unsigned int *bus,
+			       unsigned int *devfn)
 {
 	*domain = pci_domain_nr(pcidev->bus);
 	*bus = pcidev->bus->number;

drivers/xen/xen-pciback/pci_stub.c

@@ -21,12 +21,12 @@
 #include "conf_space.h"
 #include "conf_space_quirks.h"
 
-#define DRV_NAME	"pciback"
+#define DRV_NAME	"xen-pciback"
 
 static char *pci_devs_to_hide;
-wait_queue_head_t aer_wait_queue;
-/*Add sem for sync AER handling and pciback remove/reconfigue ops,
-* We want to avoid in middle of AER ops, pciback devices is being removed
+wait_queue_head_t xen_pcibk_aer_wait_queue;
+/*Add sem for sync AER handling and xen_pcibk remove/reconfigue ops,
+* We want to avoid in middle of AER ops, xen_pcibk devices is being removed
 */
 static DECLARE_RWSEM(pcistub_sem);
 module_param_named(hide, pci_devs_to_hide, charp, 0444);
@@ -46,7 +46,7 @@ struct pcistub_device {
 	spinlock_t lock;
 
 	struct pci_dev *dev;
-	struct pciback_device *pdev;/* non-NULL if struct pci_dev is in use */
+	struct xen_pcibk_device *pdev;/* non-NULL if struct pci_dev is in use */
 };
 
 /* Access to pcistub_devices & seized_devices lists and the initialize_devices
@@ -95,9 +95,9 @@ static void pcistub_device_release(struct kref *kref)
 	xen_unregister_device_domain_owner(psdev->dev);
 
 	/* Clean-up the device */
-	pciback_reset_device(psdev->dev);
-	pciback_config_free_dyn_fields(psdev->dev);
-	pciback_config_free_dev(psdev->dev);
+	xen_pcibk_reset_device(psdev->dev);
+	xen_pcibk_config_free_dyn_fields(psdev->dev);
+	xen_pcibk_config_free_dev(psdev->dev);
 	kfree(pci_get_drvdata(psdev->dev));
 	pci_set_drvdata(psdev->dev, NULL);
 
@@ -142,7 +142,7 @@ out:
 	return psdev;
 }
 
-static struct pci_dev *pcistub_device_get_pci_dev(struct pciback_device *pdev,
+static struct pci_dev *pcistub_device_get_pci_dev(struct xen_pcibk_device *pdev,
 						  struct pcistub_device *psdev)
 {
 	struct pci_dev *pci_dev = NULL;
@@ -163,7 +163,7 @@ static struct pci_dev *pcistub_device_get_pci_dev(struct pciback_device *pdev,
 	return pci_dev;
 }
 
-struct pci_dev *pcistub_get_pci_dev_by_slot(struct pciback_device *pdev,
+struct pci_dev *pcistub_get_pci_dev_by_slot(struct xen_pcibk_device *pdev,
 					    int domain, int bus,
 					    int slot, int func)
 {
@@ -187,7 +187,7 @@ struct pci_dev *pcistub_get_pci_dev_by_slot(struct pciback_device *pdev,
 	return found_dev;
 }
 
-struct pci_dev *pcistub_get_pci_dev(struct pciback_device *pdev,
+struct pci_dev *pcistub_get_pci_dev(struct xen_pcibk_device *pdev,
 				    struct pci_dev *dev)
 {
 	struct pcistub_device *psdev;
@@ -224,15 +224,15 @@ void pcistub_put_pci_dev(struct pci_dev *dev)
 	spin_unlock_irqrestore(&pcistub_devices_lock, flags);
 
 	/*hold this lock for avoiding breaking link between
-	* pcistub and pciback when AER is in processing
+	* pcistub and xen_pcibk when AER is in processing
 	*/
 	down_write(&pcistub_sem);
 	/* Cleanup our device
 	 * (so it's ready for the next domain)
 	 */
-	pciback_reset_device(found_psdev->dev);
-	pciback_config_free_dyn_fields(found_psdev->dev);
-	pciback_config_reset_dev(found_psdev->dev);
+	xen_pcibk_reset_device(found_psdev->dev);
+	xen_pcibk_config_free_dyn_fields(found_psdev->dev);
+	xen_pcibk_config_reset_dev(found_psdev->dev);
 
 	spin_lock_irqsave(&found_psdev->lock, flags);
 	found_psdev->pdev = NULL;
@@ -282,13 +282,13 @@ static int __devinit pcistub_match(struct pci_dev *dev)
 
 static int __devinit pcistub_init_device(struct pci_dev *dev)
 {
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_dev_data *dev_data;
 	int err = 0;
 
 	dev_dbg(&dev->dev, "initializing...\n");
 
 	/* The PCI backend is not intended to be a module (or to work with
-	 * removable PCI devices (yet). If it were, pciback_config_free()
+	 * removable PCI devices (yet). If it were, xen_pcibk_config_free()
 	 * would need to be called somewhere to free the memory allocated
 	 * here and then to call kfree(pci_get_drvdata(psdev->dev)).
 	 */
@@ -308,8 +308,8 @@ static int __devinit pcistub_init_device(struct pci_dev *dev)
 
 	dev_dbg(&dev->dev, "initializing config\n");
 
-	init_waitqueue_head(&aer_wait_queue);
-	err = pciback_config_init_dev(dev);
+	init_waitqueue_head(&xen_pcibk_aer_wait_queue);
+	err = xen_pcibk_config_init_dev(dev);
 	if (err)
 		goto out;
 
@@ -329,12 +329,12 @@ static int __devinit pcistub_init_device(struct pci_dev *dev)
 	 * data is setup before we export)
 	 */
 	dev_dbg(&dev->dev, "reset device\n");
-	pciback_reset_device(dev);
+	xen_pcibk_reset_device(dev);
 
 	return 0;
 
 config_release:
-	pciback_config_free_dev(dev);
+	xen_pcibk_config_free_dev(dev);
 
 out:
 	pci_set_drvdata(dev, NULL);
@@ -354,7 +354,7 @@ static int __init pcistub_init_devices_late(void)
 	unsigned long flags;
 	int err = 0;
 
-	pr_debug("pciback: pcistub_init_devices_late\n");
+	pr_debug(DRV_NAME ": pcistub_init_devices_late\n");
 
 	spin_lock_irqsave(&pcistub_devices_lock, flags);
 
@@ -458,7 +458,7 @@ static void pcistub_remove(struct pci_dev *dev)
 
 	spin_lock_irqsave(&pcistub_devices_lock, flags);
 
-	pciback_config_quirk_release(dev);
+	xen_pcibk_config_quirk_release(dev);
 
 	list_for_each_entry(psdev, &pcistub_devices, dev_list) {
 		if (psdev->dev == dev) {
@@ -474,17 +474,17 @@ static void pcistub_remove(struct pci_dev *dev)
 			found_psdev->pdev);
 
 		if (found_psdev->pdev) {
-			printk(KERN_WARNING "pciback: ****** removing device "
+			printk(KERN_WARNING DRV_NAME ": ****** removing device "
 			       "%s while still in-use! ******\n",
 			       pci_name(found_psdev->dev));
-			printk(KERN_WARNING "pciback: ****** driver domain may "
-			       "still access this device's i/o resources!\n");
-			printk(KERN_WARNING "pciback: ****** shutdown driver "
+			printk(KERN_WARNING DRV_NAME ": ****** driver domain may"
+			       " still access this device's i/o resources!\n");
+			printk(KERN_WARNING DRV_NAME ": ****** shutdown driver "
 			       "domain before binding device\n");
-			printk(KERN_WARNING "pciback: ****** to other drivers "
+			printk(KERN_WARNING DRV_NAME ": ****** to other drivers "
 			       "or domains\n");
 
-			pciback_release_pci_dev(found_psdev->pdev,
+			xen_pcibk_release_pci_dev(found_psdev->pdev,
 						found_psdev->dev);
 		}
 
@@ -541,11 +541,12 @@ again:
 }
 
 /* For each aer recovery step error_detected, mmio_enabled, etc, front_end and
- * backend need to have cooperation. In pciback, those steps will do similar
+ * backend need to have cooperation. In xen_pcibk, those steps will do similar
  * jobs: send service request and waiting for front_end response.
 */
 static pci_ers_result_t common_process(struct pcistub_device *psdev,
-		pci_channel_state_t state, int aer_cmd, pci_ers_result_t result)
+				       pci_channel_state_t state, int aer_cmd,
+				       pci_ers_result_t result)
 {
 	pci_ers_result_t res = result;
 	struct xen_pcie_aer_op *aer_op;
@@ -557,21 +558,21 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
 	/*useful for error_detected callback*/
 	aer_op->err = state;
 	/*pcifront_end BDF*/
-	ret = pciback_get_pcifront_dev(psdev->dev, psdev->pdev,
+	ret = xen_pcibk_get_pcifront_dev(psdev->dev, psdev->pdev,
 		&aer_op->domain, &aer_op->bus, &aer_op->devfn);
 	if (!ret) {
 		dev_err(&psdev->dev->dev,
-			"pciback: failed to get pcifront device\n");
+			DRV_NAME ": failed to get pcifront device\n");
 		return PCI_ERS_RESULT_NONE;
 	}
 	wmb();
 
 	dev_dbg(&psdev->dev->dev,
-			"pciback: aer_op %x dom %x bus %x devfn %x\n",
+			DRV_NAME ": aer_op %x dom %x bus %x devfn %x\n",
 			aer_cmd, aer_op->domain, aer_op->bus, aer_op->devfn);
-	/*local flag to mark there's aer request, pciback callback will use this
-	* flag to judge whether we need to check pci-front give aer service
-	* ack signal
+	/*local flag to mark there's aer request, xen_pcibk callback will use
+	* this flag to judge whether we need to check pci-front give aer
+	* service ack signal
 	*/
 	set_bit(_PCIB_op_pending, (unsigned long *)&psdev->pdev->flags);
 
@@ -584,8 +585,9 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
 	wmb();
 	notify_remote_via_irq(psdev->pdev->evtchn_irq);
 
-	ret = wait_event_timeout(aer_wait_queue, !(test_bit(_XEN_PCIB_active,
-		(unsigned long *)&psdev->pdev->sh_info->flags)), 300*HZ);
+	ret = wait_event_timeout(xen_pcibk_aer_wait_queue,
+				 !(test_bit(_XEN_PCIB_active, (unsigned long *)
+				 &psdev->pdev->sh_info->flags)), 300*HZ);
 
 	if (!ret) {
 		if (test_bit(_XEN_PCIB_active,
@@ -603,8 +605,8 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
 	if (test_bit(_XEN_PCIF_active,
 		(unsigned long *)&psdev->pdev->sh_info->flags)) {
 		dev_dbg(&psdev->dev->dev,
-			"schedule pci_conf service in pciback\n");
-		test_and_schedule_op(psdev->pdev);
+			"schedule pci_conf service in xen_pcibk\n");
+		xen_pcibk_test_and_schedule_op(psdev->pdev);
 	}
 
 	res = (pci_ers_result_t)aer_op->err;
@@ -612,19 +614,19 @@ static pci_ers_result_t common_process(struct pcistub_device *psdev,
 }
 
 /*
-* pciback_slot_reset: it will send the slot_reset request to  pcifront in case
+* xen_pcibk_slot_reset: it will send the slot_reset request to  pcifront in case
 * of the device driver could provide this service, and then wait for pcifront
 * ack.
 * @dev: pointer to PCI devices
 * return value is used by aer_core do_recovery policy
 */
-static pci_ers_result_t pciback_slot_reset(struct pci_dev *dev)
+static pci_ers_result_t xen_pcibk_slot_reset(struct pci_dev *dev)
 {
 	struct pcistub_device *psdev;
 	pci_ers_result_t result;
 
 	result = PCI_ERS_RESULT_RECOVERED;
-	dev_dbg(&dev->dev, "pciback_slot_reset(bus:%x,devfn:%x)\n",
+	dev_dbg(&dev->dev, "xen_pcibk_slot_reset(bus:%x,devfn:%x)\n",
 		dev->bus->number, dev->devfn);
 
 	down_write(&pcistub_sem);
@@ -635,12 +637,12 @@ static pci_ers_result_t pciback_slot_reset(struct pci_dev *dev)
 
 	if (!psdev || !psdev->pdev) {
 		dev_err(&dev->dev,
-			"pciback device is not found/assigned\n");
+			DRV_NAME " device is not found/assigned\n");
 		goto end;
 	}
 
 	if (!psdev->pdev->sh_info) {
-		dev_err(&dev->dev, "pciback device is not connected or owned"
+		dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
 			" by HVM, kill it\n");
 		kill_domain_by_device(psdev);
 		goto release;
@@ -669,20 +671,20 @@ end:
 }
 
 
-/*pciback_mmio_enabled: it will send the mmio_enabled request to  pcifront
+/*xen_pcibk_mmio_enabled: it will send the mmio_enabled request to  pcifront
 * in case of the device driver could provide this service, and then wait
 * for pcifront ack
 * @dev: pointer to PCI devices
 * return value is used by aer_core do_recovery policy
 */
 
-static pci_ers_result_t pciback_mmio_enabled(struct pci_dev *dev)
+static pci_ers_result_t xen_pcibk_mmio_enabled(struct pci_dev *dev)
 {
 	struct pcistub_device *psdev;
 	pci_ers_result_t result;
 
 	result = PCI_ERS_RESULT_RECOVERED;
-	dev_dbg(&dev->dev, "pciback_mmio_enabled(bus:%x,devfn:%x)\n",
+	dev_dbg(&dev->dev, "xen_pcibk_mmio_enabled(bus:%x,devfn:%x)\n",
 		dev->bus->number, dev->devfn);
 
 	down_write(&pcistub_sem);
@@ -693,12 +695,12 @@ static pci_ers_result_t pciback_mmio_enabled(struct pci_dev *dev)
 
 	if (!psdev || !psdev->pdev) {
 		dev_err(&dev->dev,
-			"pciback device is not found/assigned\n");
+			DRV_NAME " device is not found/assigned\n");
 		goto end;
 	}
 
 	if (!psdev->pdev->sh_info) {
-		dev_err(&dev->dev, "pciback device is not connected or owned"
+		dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
 			" by HVM, kill it\n");
 		kill_domain_by_device(psdev);
 		goto release;
@@ -725,7 +727,7 @@ end:
 	return result;
 }
 
-/*pciback_error_detected: it will send the error_detected request to  pcifront
+/*xen_pcibk_error_detected: it will send the error_detected request to  pcifront
 * in case of the device driver could provide this service, and then wait
 * for pcifront ack.
 * @dev: pointer to PCI devices
@@ -733,14 +735,14 @@ end:
 * return value is used by aer_core do_recovery policy
 */
 
-static pci_ers_result_t pciback_error_detected(struct pci_dev *dev,
+static pci_ers_result_t xen_pcibk_error_detected(struct pci_dev *dev,
 	pci_channel_state_t error)
 {
 	struct pcistub_device *psdev;
 	pci_ers_result_t result;
 
 	result = PCI_ERS_RESULT_CAN_RECOVER;
-	dev_dbg(&dev->dev, "pciback_error_detected(bus:%x,devfn:%x)\n",
+	dev_dbg(&dev->dev, "xen_pcibk_error_detected(bus:%x,devfn:%x)\n",
 		dev->bus->number, dev->devfn);
 
 	down_write(&pcistub_sem);
@@ -751,12 +753,12 @@ static pci_ers_result_t pciback_error_detected(struct pci_dev *dev,
 
 	if (!psdev || !psdev->pdev) {
 		dev_err(&dev->dev,
-			"pciback device is not found/assigned\n");
+			DRV_NAME " device is not found/assigned\n");
 		goto end;
 	}
 
 	if (!psdev->pdev->sh_info) {
-		dev_err(&dev->dev, "pciback device is not connected or owned"
+		dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
 			" by HVM, kill it\n");
 		kill_domain_by_device(psdev);
 		goto release;
@@ -784,17 +786,17 @@ end:
 	return result;
 }
 
-/*pciback_error_resume: it will send the error_resume request to  pcifront
+/*xen_pcibk_error_resume: it will send the error_resume request to  pcifront
 * in case of the device driver could provide this service, and then wait
 * for pcifront ack.
 * @dev: pointer to PCI devices
 */
 
-static void pciback_error_resume(struct pci_dev *dev)
+static void xen_pcibk_error_resume(struct pci_dev *dev)
 {
 	struct pcistub_device *psdev;
 
-	dev_dbg(&dev->dev, "pciback_error_resume(bus:%x,devfn:%x)\n",
+	dev_dbg(&dev->dev, "xen_pcibk_error_resume(bus:%x,devfn:%x)\n",
 		dev->bus->number, dev->devfn);
 
 	down_write(&pcistub_sem);
@@ -805,12 +807,12 @@ static void pciback_error_resume(struct pci_dev *dev)
 
 	if (!psdev || !psdev->pdev) {
 		dev_err(&dev->dev,
-			"pciback device is not found/assigned\n");
+			DRV_NAME " device is not found/assigned\n");
 		goto end;
 	}
 
 	if (!psdev->pdev->sh_info) {
-		dev_err(&dev->dev, "pciback device is not connected or owned"
+		dev_err(&dev->dev, DRV_NAME " device is not connected or owned"
 			" by HVM, kill it\n");
 		kill_domain_by_device(psdev);
 		goto release;
@@ -832,12 +834,12 @@ end:
 	return;
 }
 
-/*add pciback AER handling*/
-static struct pci_error_handlers pciback_error_handler = {
-	.error_detected = pciback_error_detected,
-	.mmio_enabled = pciback_mmio_enabled,
-	.slot_reset = pciback_slot_reset,
-	.resume = pciback_error_resume,
+/*add xen_pcibk AER handling*/
+static struct pci_error_handlers xen_pcibk_error_handler = {
+	.error_detected = xen_pcibk_error_detected,
+	.mmio_enabled = xen_pcibk_mmio_enabled,
+	.slot_reset = xen_pcibk_slot_reset,
+	.resume = xen_pcibk_error_resume,
 };
 
 /*
@@ -845,12 +847,14 @@ static struct pci_error_handlers pciback_error_handler = {
  * for a normal device. I don't want it to be loaded automatically.
  */
 
-static struct pci_driver pciback_pci_driver = {
-	.name = DRV_NAME,
+static struct pci_driver xen_pcibk_pci_driver = {
+	/* The name should be xen_pciback, but until the tools are updated
+	 * we will keep it as pciback. */
+	.name = "pciback",
 	.id_table = pcistub_ids,
 	.probe = pcistub_probe,
 	.remove = pcistub_remove,
-	.err_handler = &pciback_error_handler,
+	.err_handler = &xen_pcibk_error_handler,
 };
 
 static inline int str_to_slot(const char *buf, int *domain, int *bus,
@@ -899,7 +903,7 @@ static int pcistub_device_id_add(int domain, int bus, int slot, int func)
 	pci_dev_id->bus = bus;
 	pci_dev_id->devfn = PCI_DEVFN(slot, func);
 
-	pr_debug("pciback: wants to seize %04x:%02x:%02x.%01x\n",
+	pr_debug(DRV_NAME ": wants to seize %04x:%02x:%02x.%01x\n",
 		 domain, bus, slot, func);
 
 	spin_lock_irqsave(&device_ids_lock, flags);
@@ -929,7 +933,7 @@ static int pcistub_device_id_remove(int domain, int bus, int slot, int func)
 
 			err = 0;
 
-			pr_debug("pciback: removed %04x:%02x:%02x.%01x from "
+			pr_debug(DRV_NAME ": removed %04x:%02x:%02x.%01x from "
 				 "seize list\n", domain, bus, slot, func);
 		}
 	}
@@ -965,9 +969,9 @@ static int pcistub_reg_add(int domain, int bus, int slot, int func, int reg,
 	field->init = NULL;
 	field->reset = NULL;
 	field->release = NULL;
-	field->clean = pciback_config_field_free;
+	field->clean = xen_pcibk_config_field_free;
 
-	err = pciback_config_quirks_add_field(dev, field);
+	err = xen_pcibk_config_quirks_add_field(dev, field);
 	if (err)
 		kfree(field);
 out:
@@ -1041,7 +1045,7 @@ DRIVER_ATTR(slots, S_IRUSR, pcistub_slot_show, NULL);
 static ssize_t pcistub_irq_handler_show(struct device_driver *drv, char *buf)
 {
 	struct pcistub_device *psdev;
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_dev_data *dev_data;
 	size_t count = 0;
 	unsigned long flags;
 
@@ -1073,7 +1077,7 @@ static ssize_t pcistub_irq_handler_switch(struct device_driver *drv,
 					  size_t count)
 {
 	struct pcistub_device *psdev;
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_dev_data *dev_data;
 	int domain, bus, slot, func;
 	int err = -ENOENT;
 
@@ -1127,13 +1131,13 @@ static ssize_t pcistub_quirk_show(struct device_driver *drv, char *buf)
 {
 	int count = 0;
 	unsigned long flags;
-	struct pciback_config_quirk *quirk;
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_config_quirk *quirk;
+	struct xen_pcibk_dev_data *dev_data;
 	const struct config_field *field;
 	const struct config_field_entry *cfg_entry;
 
 	spin_lock_irqsave(&device_ids_lock, flags);
-	list_for_each_entry(quirk, &pciback_quirks, quirks_list) {
+	list_for_each_entry(quirk, &xen_pcibk_quirks, quirks_list) {
 		if (count >= PAGE_SIZE)
 			goto out;
 
@@ -1175,7 +1179,7 @@ static ssize_t permissive_add(struct device_driver *drv, const char *buf,
 	int domain, bus, slot, func;
 	int err;
 	struct pcistub_device *psdev;
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_dev_data *dev_data;
 	err = str_to_slot(buf, &domain, &bus, &slot, &func);
 	if (err)
 		goto out;
@@ -1213,7 +1217,7 @@ out:
 static ssize_t permissive_show(struct device_driver *drv, char *buf)
 {
 	struct pcistub_device *psdev;
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_dev_data *dev_data;
 	size_t count = 0;
 	unsigned long flags;
 	spin_lock_irqsave(&pcistub_devices_lock, flags);
@@ -1237,17 +1241,18 @@ DRIVER_ATTR(permissive, S_IRUSR | S_IWUSR, permissive_show, permissive_add);
 
 static void pcistub_exit(void)
 {
-	driver_remove_file(&pciback_pci_driver.driver, &driver_attr_new_slot);
-	driver_remove_file(&pciback_pci_driver.driver,
+	driver_remove_file(&xen_pcibk_pci_driver.driver, &driver_attr_new_slot);
+	driver_remove_file(&xen_pcibk_pci_driver.driver,
 			   &driver_attr_remove_slot);
-	driver_remove_file(&pciback_pci_driver.driver, &driver_attr_slots);
-	driver_remove_file(&pciback_pci_driver.driver, &driver_attr_quirks);
-	driver_remove_file(&pciback_pci_driver.driver, &driver_attr_permissive);
-	driver_remove_file(&pciback_pci_driver.driver,
+	driver_remove_file(&xen_pcibk_pci_driver.driver, &driver_attr_slots);
+	driver_remove_file(&xen_pcibk_pci_driver.driver, &driver_attr_quirks);
+	driver_remove_file(&xen_pcibk_pci_driver.driver,
+			   &driver_attr_permissive);
+	driver_remove_file(&xen_pcibk_pci_driver.driver,
 			   &driver_attr_irq_handlers);
-	driver_remove_file(&pciback_pci_driver.driver,
+	driver_remove_file(&xen_pcibk_pci_driver.driver,
 			   &driver_attr_irq_handler_state);
-	pci_unregister_driver(&pciback_pci_driver);
+	pci_unregister_driver(&xen_pcibk_pci_driver);
 }
 
 static int __init pcistub_init(void)
@@ -1286,30 +1291,30 @@ static int __init pcistub_init(void)
 	 * first one to get offered PCI devices as they become
 	 * available (and thus we can be the first to grab them)
 	 */
-	err = pci_register_driver(&pciback_pci_driver);
+	err = pci_register_driver(&xen_pcibk_pci_driver);
 	if (err < 0)
 		goto out;
 
-	err = driver_create_file(&pciback_pci_driver.driver,
+	err = driver_create_file(&xen_pcibk_pci_driver.driver,
 				 &driver_attr_new_slot);
 	if (!err)
-		err = driver_create_file(&pciback_pci_driver.driver,
+		err = driver_create_file(&xen_pcibk_pci_driver.driver,
 					 &driver_attr_remove_slot);
 	if (!err)
-		err = driver_create_file(&pciback_pci_driver.driver,
+		err = driver_create_file(&xen_pcibk_pci_driver.driver,
 					 &driver_attr_slots);
 	if (!err)
-		err = driver_create_file(&pciback_pci_driver.driver,
+		err = driver_create_file(&xen_pcibk_pci_driver.driver,
 					 &driver_attr_quirks);
 	if (!err)
-		err = driver_create_file(&pciback_pci_driver.driver,
+		err = driver_create_file(&xen_pcibk_pci_driver.driver,
 					 &driver_attr_permissive);
 
 	if (!err)
-		err = driver_create_file(&pciback_pci_driver.driver,
+		err = driver_create_file(&xen_pcibk_pci_driver.driver,
 					 &driver_attr_irq_handlers);
 	if (!err)
-		err = driver_create_file(&pciback_pci_driver.driver,
+		err = driver_create_file(&xen_pcibk_pci_driver.driver,
 					&driver_attr_irq_handler_state);
 	if (err)
 		pcistub_exit();
@@ -1318,7 +1323,7 @@ out:
 	return err;
 
 parse_error:
-	printk(KERN_ERR "pciback: Error parsing pci_devs_to_hide at \"%s\"\n",
+	printk(KERN_ERR DRV_NAME ": Error parsing pci_devs_to_hide at \"%s\"\n",
 	       pci_devs_to_hide + pos);
 	return -EINVAL;
 }
@@ -1326,7 +1331,7 @@ parse_error:
 #ifndef MODULE
 /*
  * fs_initcall happens before device_initcall
- * so pciback *should* get called first (b/c we
+ * so xen_pcibk *should* get called first (b/c we
  * want to suck up any device before other drivers
  * get a chance by being the first pci device
  * driver to register)
@@ -1334,14 +1339,14 @@ parse_error:
 fs_initcall(pcistub_init);
 #endif
 
-static int __init pciback_init(void)
+static int __init xen_pcibk_init(void)
 {
 	int err;
 
 	if (!xen_initial_domain())
 		return -ENODEV;
 
-	err = pciback_config_init();
+	err = xen_pcibk_config_init();
 	if (err)
 		return err;
 
@@ -1352,20 +1357,20 @@ static int __init pciback_init(void)
 #endif
 
 	pcistub_init_devices_late();
-	err = pciback_xenbus_register();
+	err = xen_pcibk_xenbus_register();
 	if (err)
 		pcistub_exit();
 
 	return err;
 }
 
-static void __exit pciback_cleanup(void)
+static void __exit xen_pcibk_cleanup(void)
 {
-	pciback_xenbus_unregister();
+	xen_pcibk_xenbus_unregister();
 	pcistub_exit();
 }
 
-module_init(pciback_init);
-module_exit(pciback_cleanup);
+module_init(xen_pcibk_init);
+module_exit(xen_pcibk_cleanup);
 
 MODULE_LICENSE("Dual BSD/GPL");

drivers/xen/xen-pciback/pciback.h

@@ -25,25 +25,19 @@ struct pci_dev_entry {
 #define _PCIB_op_pending	(1)
 #define PCIB_op_pending		(1<<(_PCIB_op_pending))
 
-struct pciback_device {
+struct xen_pcibk_device {
 	void *pci_dev_data;
 	spinlock_t dev_lock;
-
 	struct xenbus_device *xdev;
-
 	struct xenbus_watch be_watch;
 	u8 be_watching;
-
 	int evtchn_irq;
-
 	struct xen_pci_sharedinfo *sh_info;
-
 	unsigned long flags;
-
 	struct work_struct op_work;
 };
 
-struct pciback_dev_data {
+struct xen_pcibk_dev_data {
 	struct list_head config_fields;
 	unsigned int permissive:1;
 	unsigned int warned_on_write:1;
@@ -52,91 +46,78 @@ struct pciback_dev_data {
 	unsigned int ack_intr:1; /* .. and ACK-ing */
 	unsigned long handled;
 	unsigned int irq; /* Saved in case device transitions to MSI/MSI-X */
-	char irq_name[0]; /* pciback[000:04:00.0] */
+	char irq_name[0]; /* xen-pcibk[000:04:00.0] */
 };
 
-/* Used by XenBus and pciback_ops.c */
-extern wait_queue_head_t aer_wait_queue;
-extern struct workqueue_struct *pciback_wq;
+/* Used by XenBus and xen_pcibk_ops.c */
+extern wait_queue_head_t xen_pcibk_aer_wait_queue;
+extern struct workqueue_struct *xen_pcibk_wq;
 /* Used by pcistub.c and conf_space_quirks.c */
-extern struct list_head pciback_quirks;
+extern struct list_head xen_pcibk_quirks;
 
 /* Get/Put PCI Devices that are hidden from the PCI Backend Domain */
-struct pci_dev *pcistub_get_pci_dev_by_slot(struct pciback_device *pdev,
+struct pci_dev *pcistub_get_pci_dev_by_slot(struct xen_pcibk_device *pdev,
 					    int domain, int bus,
 					    int slot, int func);
-struct pci_dev *pcistub_get_pci_dev(struct pciback_device *pdev,
+struct pci_dev *pcistub_get_pci_dev(struct xen_pcibk_device *pdev,
 				    struct pci_dev *dev);
 void pcistub_put_pci_dev(struct pci_dev *dev);
 
 /* Ensure a device is turned off or reset */
-void pciback_reset_device(struct pci_dev *pdev);
+void xen_pcibk_reset_device(struct pci_dev *pdev);
 
 /* Access a virtual configuration space for a PCI device */
-int pciback_config_init(void);
-int pciback_config_init_dev(struct pci_dev *dev);
-void pciback_config_free_dyn_fields(struct pci_dev *dev);
-void pciback_config_reset_dev(struct pci_dev *dev);
-void pciback_config_free_dev(struct pci_dev *dev);
-int pciback_config_read(struct pci_dev *dev, int offset, int size,
-			u32 *ret_val);
-int pciback_config_write(struct pci_dev *dev, int offset, int size, u32 value);
+int xen_pcibk_config_init(void);
+int xen_pcibk_config_init_dev(struct pci_dev *dev);
+void xen_pcibk_config_free_dyn_fields(struct pci_dev *dev);
+void xen_pcibk_config_reset_dev(struct pci_dev *dev);
+void xen_pcibk_config_free_dev(struct pci_dev *dev);
+int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,
+			  u32 *ret_val);
+int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size,
+			   u32 value);
 
 /* Handle requests for specific devices from the frontend */
-typedef int (*publish_pci_dev_cb) (struct pciback_device *pdev,
+typedef int (*publish_pci_dev_cb) (struct xen_pcibk_device *pdev,
 				   unsigned int domain, unsigned int bus,
 				   unsigned int devfn, unsigned int devid);
-typedef int (*publish_pci_root_cb) (struct pciback_device *pdev,
+typedef int (*publish_pci_root_cb) (struct xen_pcibk_device *pdev,
 				    unsigned int domain, unsigned int bus);
-int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
-			int devid, publish_pci_dev_cb publish_cb);
-void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev);
-struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
-				    unsigned int domain, unsigned int bus,
-				    unsigned int devfn);
+int xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev, struct pci_dev *dev,
+			  int devid, publish_pci_dev_cb publish_cb);
+void xen_pcibk_release_pci_dev(struct xen_pcibk_device *pdev,
+			       struct pci_dev *dev);
+struct pci_dev *xen_pcibk_get_pci_dev(struct xen_pcibk_device *pdev,
+				      unsigned int domain, unsigned int bus,
+				      unsigned int devfn);
 
 /**
-* Add for domain0 PCIE-AER handling. Get guest domain/bus/devfn in pciback
+* Add for domain0 PCIE-AER handling. Get guest domain/bus/devfn in xen_pcibk
 * before sending aer request to pcifront, so that guest could identify
-* device, coopearte with pciback to finish aer recovery job if device driver
+* device, coopearte with xen_pcibk to finish aer recovery job if device driver
 * has the capability
 */
 
-int pciback_get_pcifront_dev(struct pci_dev *pcidev,
-			     struct pciback_device *pdev,
-			     unsigned int *domain, unsigned int *bus,
-			     unsigned int *devfn);
-int pciback_init_devices(struct pciback_device *pdev);
-int pciback_publish_pci_roots(struct pciback_device *pdev,
-			      publish_pci_root_cb cb);
-void pciback_release_devices(struct pciback_device *pdev);
+int xen_pcibk_get_pcifront_dev(struct pci_dev *pcidev,
+			       struct xen_pcibk_device *pdev,
+			       unsigned int *domain, unsigned int *bus,
+			       unsigned int *devfn);
+int xen_pcibk_init_devices(struct xen_pcibk_device *pdev);
+int xen_pcibk_publish_pci_roots(struct xen_pcibk_device *pdev,
+				publish_pci_root_cb cb);
+void xen_pcibk_release_devices(struct xen_pcibk_device *pdev);
 
 /* Handles events from front-end */
-irqreturn_t pciback_handle_event(int irq, void *dev_id);
-void pciback_do_op(struct work_struct *data);
+irqreturn_t xen_pcibk_handle_event(int irq, void *dev_id);
+void xen_pcibk_do_op(struct work_struct *data);
 
-int pciback_xenbus_register(void);
-void pciback_xenbus_unregister(void);
+int xen_pcibk_xenbus_register(void);
+void xen_pcibk_xenbus_unregister(void);
 
-#ifdef CONFIG_PCI_MSI
-int pciback_enable_msi(struct pciback_device *pdev,
-			struct pci_dev *dev, struct xen_pci_op *op);
-
-int pciback_disable_msi(struct pciback_device *pdev,
-			struct pci_dev *dev, struct xen_pci_op *op);
-
-
-int pciback_enable_msix(struct pciback_device *pdev,
-			struct pci_dev *dev, struct xen_pci_op *op);
-
-int pciback_disable_msix(struct pciback_device *pdev,
-			struct pci_dev *dev, struct xen_pci_op *op);
-#endif
 extern int verbose_request;
 
-void test_and_schedule_op(struct pciback_device *pdev);
+void xen_pcibk_test_and_schedule_op(struct xen_pcibk_device *pdev);
 #endif
 
 /* Handles shared IRQs that can to device domain and control domain. */
-void pciback_irq_handler(struct pci_dev *dev, int reset);
-irqreturn_t pciback_guest_interrupt(int irq, void *dev_id);
+void xen_pcibk_irq_handler(struct pci_dev *dev, int reset);

drivers/xen/xen-pciback/pciback_ops.c

@@ -10,16 +10,19 @@
 #include <linux/sched.h>
 #include "pciback.h"
 
+#define DRV_NAME	"xen-pciback"
 int verbose_request;
 module_param(verbose_request, int, 0644);
 
+static irqreturn_t xen_pcibk_guest_interrupt(int irq, void *dev_id);
+
 /* Ensure a device is has the fake IRQ handler "turned on/off" and is
- * ready to be exported. This MUST be run after pciback_reset_device
+ * ready to be exported. This MUST be run after xen_pcibk_reset_device
  * which does the actual PCI device enable/disable.
  */
-void pciback_control_isr(struct pci_dev *dev, int reset)
+static void xen_pcibk_control_isr(struct pci_dev *dev, int reset)
 {
-	struct pciback_dev_data *dev_data;
+	struct xen_pcibk_dev_data *dev_data;
 	int rc;
 	int enable = 0;
 
@@ -66,7 +69,7 @@ void pciback_control_isr(struct pci_dev *dev, int reset)
 
 	if (enable) {
 		rc = request_irq(dev_data->irq,
-				pciback_guest_interrupt, IRQF_SHARED,
+				xen_pcibk_guest_interrupt, IRQF_SHARED,
 				dev_data->irq_name, dev);
 		if (rc) {
 			dev_err(&dev->dev, "%s: failed to install fake IRQ " \
@@ -92,14 +95,14 @@ out:
 }
 
 /* Ensure a device is "turned off" and ready to be exported.
- * (Also see pciback_config_reset to ensure virtual configuration space is
+ * (Also see xen_pcibk_config_reset to ensure virtual configuration space is
  * ready to be re-exported)
  */
-void pciback_reset_device(struct pci_dev *dev)
+void xen_pcibk_reset_device(struct pci_dev *dev)
 {
 	u16 cmd;
 
-	pciback_control_isr(dev, 1 /* reset device */);
+	xen_pcibk_control_isr(dev, 1 /* reset device */);
 
 	/* Disable devices (but not bridges) */
 	if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL) {
@@ -126,43 +129,176 @@ void pciback_reset_device(struct pci_dev *dev)
 		}
 	}
 }
+
+#ifdef CONFIG_PCI_MSI
+static
+int xen_pcibk_enable_msi(struct xen_pcibk_device *pdev,
+			 struct pci_dev *dev, struct xen_pci_op *op)
+{
+	struct xen_pcibk_dev_data *dev_data;
+	int otherend = pdev->xdev->otherend_id;
+	int status;
+
+	if (unlikely(verbose_request))
+		printk(KERN_DEBUG DRV_NAME ": %s: enable MSI\n", pci_name(dev));
+
+	status = pci_enable_msi(dev);
+
+	if (status) {
+		printk(KERN_ERR "error enable msi for guest %x status %x\n",
+			otherend, status);
+		op->value = 0;
+		return XEN_PCI_ERR_op_failed;
+	}
+
+	/* The value the guest needs is actually the IDT vector, not the
+	 * the local domain's IRQ number. */
+
+	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
+	if (unlikely(verbose_request))
+		printk(KERN_DEBUG DRV_NAME ": %s: MSI: %d\n", pci_name(dev),
+			op->value);
+
+	dev_data = pci_get_drvdata(dev);
+	if (dev_data)
+		dev_data->ack_intr = 0;
+
+	return 0;
+}
+
+static
+int xen_pcibk_disable_msi(struct xen_pcibk_device *pdev,
+			  struct pci_dev *dev, struct xen_pci_op *op)
+{
+	struct xen_pcibk_dev_data *dev_data;
+
+	if (unlikely(verbose_request))
+		printk(KERN_DEBUG DRV_NAME ": %s: disable MSI\n",
+		       pci_name(dev));
+	pci_disable_msi(dev);
+
+	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
+	if (unlikely(verbose_request))
+		printk(KERN_DEBUG DRV_NAME ": %s: MSI: %d\n", pci_name(dev),
+			op->value);
+	dev_data = pci_get_drvdata(dev);
+	if (dev_data)
+		dev_data->ack_intr = 1;
+	return 0;
+}
+
+static
+int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev,
+			  struct pci_dev *dev, struct xen_pci_op *op)
+{
+	struct xen_pcibk_dev_data *dev_data;
+	int i, result;
+	struct msix_entry *entries;
+
+	if (unlikely(verbose_request))
+		printk(KERN_DEBUG DRV_NAME ": %s: enable MSI-X\n",
+		       pci_name(dev));
+	if (op->value > SH_INFO_MAX_VEC)
+		return -EINVAL;
+
+	entries = kmalloc(op->value * sizeof(*entries), GFP_KERNEL);
+	if (entries == NULL)
+		return -ENOMEM;
+
+	for (i = 0; i < op->value; i++) {
+		entries[i].entry = op->msix_entries[i].entry;
+		entries[i].vector = op->msix_entries[i].vector;
+	}
+
+	result = pci_enable_msix(dev, entries, op->value);
+
+	if (result == 0) {
+		for (i = 0; i < op->value; i++) {
+			op->msix_entries[i].entry = entries[i].entry;
+			if (entries[i].vector)
+				op->msix_entries[i].vector =
+					xen_pirq_from_irq(entries[i].vector);
+				if (unlikely(verbose_request))
+					printk(KERN_DEBUG DRV_NAME ": %s: " \
+						"MSI-X[%d]: %d\n",
+						pci_name(dev), i,
+						op->msix_entries[i].vector);
+		}
+	} else {
+		printk(KERN_WARNING DRV_NAME ": %s: failed to enable MSI-X: err %d!\n",
+			pci_name(dev), result);
+	}
+	kfree(entries);
+
+	op->value = result;
+	dev_data = pci_get_drvdata(dev);
+	if (dev_data)
+		dev_data->ack_intr = 0;
+
+	return result;
+}
+
+static
+int xen_pcibk_disable_msix(struct xen_pcibk_device *pdev,
+			   struct pci_dev *dev, struct xen_pci_op *op)
+{
+	struct xen_pcibk_dev_data *dev_data;
+	if (unlikely(verbose_request))
+		printk(KERN_DEBUG DRV_NAME ": %s: disable MSI-X\n",
+			pci_name(dev));
+	pci_disable_msix(dev);
+
+	/*
+	 * SR-IOV devices (which don't have any legacy IRQ) have
+	 * an undefined IRQ value of zero.
+	 */
+	op->value = dev->irq ? xen_pirq_from_irq(dev->irq) : 0;
+	if (unlikely(verbose_request))
+		printk(KERN_DEBUG DRV_NAME ": %s: MSI-X: %d\n", pci_name(dev),
+			op->value);
+	dev_data = pci_get_drvdata(dev);
+	if (dev_data)
+		dev_data->ack_intr = 1;
+	return 0;
+}
+#endif
 /*
 * Now the same evtchn is used for both pcifront conf_read_write request
 * as well as pcie aer front end ack. We use a new work_queue to schedule
-* pciback conf_read_write service for avoiding confict with aer_core
+* xen_pcibk conf_read_write service for avoiding confict with aer_core
 * do_recovery job which also use the system default work_queue
 */
-void test_and_schedule_op(struct pciback_device *pdev)
+void xen_pcibk_test_and_schedule_op(struct xen_pcibk_device *pdev)
 {
 	/* Check that frontend is requesting an operation and that we are not
 	 * already processing a request */
 	if (test_bit(_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags)
 	    && !test_and_set_bit(_PDEVF_op_active, &pdev->flags)) {
-		queue_work(pciback_wq, &pdev->op_work);
+		queue_work(xen_pcibk_wq, &pdev->op_work);
 	}
 	/*_XEN_PCIB_active should have been cleared by pcifront. And also make
-	sure pciback is waiting for ack by checking _PCIB_op_pending*/
+	sure xen_pcibk is waiting for ack by checking _PCIB_op_pending*/
 	if (!test_bit(_XEN_PCIB_active, (unsigned long *)&pdev->sh_info->flags)
 	    && test_bit(_PCIB_op_pending, &pdev->flags)) {
-		wake_up(&aer_wait_queue);
+		wake_up(&xen_pcibk_aer_wait_queue);
 	}
 }
 
 /* Performing the configuration space reads/writes must not be done in atomic
  * context because some of the pci_* functions can sleep (mostly due to ACPI
  * use of semaphores). This function is intended to be called from a work
- * queue in process context taking a struct pciback_device as a parameter */
+ * queue in process context taking a struct xen_pcibk_device as a parameter */
 
-void pciback_do_op(struct work_struct *data)
+void xen_pcibk_do_op(struct work_struct *data)
 {
-	struct pciback_device *pdev =
-		container_of(data, struct pciback_device, op_work);
+	struct xen_pcibk_device *pdev =
+		container_of(data, struct xen_pcibk_device, op_work);
 	struct pci_dev *dev;
-	struct pciback_dev_data *dev_data = NULL;
+	struct xen_pcibk_dev_data *dev_data = NULL;
 	struct xen_pci_op *op = &pdev->sh_info->op;
 	int test_intx = 0;
 
-	dev = pciback_get_pci_dev(pdev, op->domain, op->bus, op->devfn);
+	dev = xen_pcibk_get_pci_dev(pdev, op->domain, op->bus, op->devfn);
 
 	if (dev == NULL)
 		op->err = XEN_PCI_ERR_dev_not_found;
@@ -172,25 +308,25 @@ void pciback_do_op(struct work_struct *data)
 			test_intx = dev_data->enable_intx;
 		switch (op->cmd) {
 		case XEN_PCI_OP_conf_read:
-			op->err = pciback_config_read(dev,
+			op->err = xen_pcibk_config_read(dev,
 				  op->offset, op->size, &op->value);
 			break;
 		case XEN_PCI_OP_conf_write:
-			op->err = pciback_config_write(dev,
+			op->err = xen_pcibk_config_write(dev,
 				  op->offset, op->size,	op->value);
 			break;
 #ifdef CONFIG_PCI_MSI
 		case XEN_PCI_OP_enable_msi:
-			op->err = pciback_enable_msi(pdev, dev, op);
+			op->err = xen_pcibk_enable_msi(pdev, dev, op);
 			break;
 		case XEN_PCI_OP_disable_msi:
-			op->err = pciback_disable_msi(pdev, dev, op);
+			op->err = xen_pcibk_disable_msi(pdev, dev, op);
 			break;
 		case XEN_PCI_OP_enable_msix:
-			op->err = pciback_enable_msix(pdev, dev, op);
+			op->err = xen_pcibk_enable_msix(pdev, dev, op);
 			break;
 		case XEN_PCI_OP_disable_msix:
-			op->err = pciback_disable_msix(pdev, dev, op);
+			op->err = xen_pcibk_disable_msix(pdev, dev, op);
 			break;
 #endif
 		default:
@@ -201,7 +337,7 @@ void pciback_do_op(struct work_struct *data)
 	if (!op->err && dev && dev_data) {
 		/* Transition detected */
 		if ((dev_data->enable_intx != test_intx))
-			pciback_control_isr(dev, 0 /* no reset */);
+			xen_pcibk_control_isr(dev, 0 /* no reset */);
 	}
 	/* Tell the driver domain that we're done. */
 	wmb();
@@ -216,21 +352,21 @@ void pciback_do_op(struct work_struct *data)
 	/* Check to see if the driver domain tried to start another request in
 	 * between clearing _XEN_PCIF_active and clearing _PDEVF_op_active.
 	*/
-	test_and_schedule_op(pdev);
+	xen_pcibk_test_and_schedule_op(pdev);
 }
 
-irqreturn_t pciback_handle_event(int irq, void *dev_id)
+irqreturn_t xen_pcibk_handle_event(int irq, void *dev_id)
 {
-	struct pciback_device *pdev = dev_id;
+	struct xen_pcibk_device *pdev = dev_id;
 
-	test_and_schedule_op(pdev);
+	xen_pcibk_test_and_schedule_op(pdev);
 
 	return IRQ_HANDLED;
 }
-irqreturn_t pciback_guest_interrupt(int irq, void *dev_id)
+static irqreturn_t xen_pcibk_guest_interrupt(int irq, void *dev_id)
 {
 	struct pci_dev *dev = (struct pci_dev *)dev_id;
-	struct pciback_dev_data *dev_data = pci_get_drvdata(dev);
+	struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
 
 	if (dev_data->isr_on && dev_data->ack_intr) {
 		dev_data->handled++;

drivers/xen/xen-pciback/slot.c

@@ -1,191 +0,0 @@
-/*
- * PCI Backend - Provides a Virtual PCI bus (with real devices)
- *               to the frontend
- *
- *   Author: Ryan Wilson <hap9@epoch.ncsc.mil> (vpci.c)
- *   Author: Tristan Gingold <tristan.gingold@bull.net>, from vpci.c
- */
-
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/spinlock.h>
-#include "pciback.h"
-
-/* There are at most 32 slots in a pci bus.  */
-#define PCI_SLOT_MAX 32
-
-#define PCI_BUS_NBR 2
-
-struct slot_dev_data {
-	/* Access to dev_list must be protected by lock */
-	struct pci_dev *slots[PCI_BUS_NBR][PCI_SLOT_MAX];
-	spinlock_t lock;
-};
-
-struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
-				    unsigned int domain, unsigned int bus,
-				    unsigned int devfn)
-{
-	struct pci_dev *dev = NULL;
-	struct slot_dev_data *slot_dev = pdev->pci_dev_data;
-	unsigned long flags;
-
-	if (domain != 0 || PCI_FUNC(devfn) != 0)
-		return NULL;
-
-	if (PCI_SLOT(devfn) >= PCI_SLOT_MAX || bus >= PCI_BUS_NBR)
-		return NULL;
-
-	spin_lock_irqsave(&slot_dev->lock, flags);
-	dev = slot_dev->slots[bus][PCI_SLOT(devfn)];
-	spin_unlock_irqrestore(&slot_dev->lock, flags);
-
-	return dev;
-}
-
-int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
-			int devid, publish_pci_dev_cb publish_cb)
-{
-	int err = 0, slot, bus;
-	struct slot_dev_data *slot_dev = pdev->pci_dev_data;
-	unsigned long flags;
-
-	if ((dev->class >> 24) == PCI_BASE_CLASS_BRIDGE) {
-		err = -EFAULT;
-		xenbus_dev_fatal(pdev->xdev, err,
-				 "Can't export bridges on the virtual PCI bus");
-		goto out;
-	}
-
-	spin_lock_irqsave(&slot_dev->lock, flags);
-
-	/* Assign to a new slot on the virtual PCI bus */
-	for (bus = 0; bus < PCI_BUS_NBR; bus++)
-		for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
-			if (slot_dev->slots[bus][slot] == NULL) {
-				printk(KERN_INFO
-				       "pciback: slot: %s: assign to virtual "
-				       "slot %d, bus %d\n",
-				       pci_name(dev), slot, bus);
-				slot_dev->slots[bus][slot] = dev;
-				goto unlock;
-			}
-		}
-
-	err = -ENOMEM;
-	xenbus_dev_fatal(pdev->xdev, err,
-			 "No more space on root virtual PCI bus");
-
-unlock:
-	spin_unlock_irqrestore(&slot_dev->lock, flags);
-
-	/* Publish this device. */
-	if (!err)
-		err = publish_cb(pdev, 0, 0, PCI_DEVFN(slot, 0), devid);
-
-out:
-	return err;
-}
-
-void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev)
-{
-	int slot, bus;
-	struct slot_dev_data *slot_dev = pdev->pci_dev_data;
-	struct pci_dev *found_dev = NULL;
-	unsigned long flags;
-
-	spin_lock_irqsave(&slot_dev->lock, flags);
-
-	for (bus = 0; bus < PCI_BUS_NBR; bus++)
-		for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
-			if (slot_dev->slots[bus][slot] == dev) {
-				slot_dev->slots[bus][slot] = NULL;
-				found_dev = dev;
-				goto out;
-			}
-		}
-
-out:
-	spin_unlock_irqrestore(&slot_dev->lock, flags);
-
-	if (found_dev)
-		pcistub_put_pci_dev(found_dev);
-}
-
-int pciback_init_devices(struct pciback_device *pdev)
-{
-	int slot, bus;
-	struct slot_dev_data *slot_dev;
-
-	slot_dev = kmalloc(sizeof(*slot_dev), GFP_KERNEL);
-	if (!slot_dev)
-		return -ENOMEM;
-
-	spin_lock_init(&slot_dev->lock);
-
-	for (bus = 0; bus < PCI_BUS_NBR; bus++)
-		for (slot = 0; slot < PCI_SLOT_MAX; slot++)
-			slot_dev->slots[bus][slot] = NULL;
-
-	pdev->pci_dev_data = slot_dev;
-
-	return 0;
-}
-
-int pciback_publish_pci_roots(struct pciback_device *pdev,
-			      publish_pci_root_cb publish_cb)
-{
-	/* The Virtual PCI bus has only one root */
-	return publish_cb(pdev, 0, 0);
-}
-
-void pciback_release_devices(struct pciback_device *pdev)
-{
-	int slot, bus;
-	struct slot_dev_data *slot_dev = pdev->pci_dev_data;
-	struct pci_dev *dev;
-
-	for (bus = 0; bus < PCI_BUS_NBR; bus++)
-		for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
-			dev = slot_dev->slots[bus][slot];
-			if (dev != NULL)
-				pcistub_put_pci_dev(dev);
-		}
-
-	kfree(slot_dev);
-	pdev->pci_dev_data = NULL;
-}
-
-int pciback_get_pcifront_dev(struct pci_dev *pcidev,
-			     struct pciback_device *pdev,
-			     unsigned int *domain, unsigned int *bus,
-			     unsigned int *devfn)
-{
-	int slot, busnr;
-	struct slot_dev_data *slot_dev = pdev->pci_dev_data;
-	struct pci_dev *dev;
-	int found = 0;
-	unsigned long flags;
-
-	spin_lock_irqsave(&slot_dev->lock, flags);
-
-	for (busnr = 0; busnr < PCI_BUS_NBR; bus++)
-		for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
-			dev = slot_dev->slots[busnr][slot];
-			if (dev && dev->bus->number == pcidev->bus->number
-				&& dev->devfn == pcidev->devfn
-				&& pci_domain_nr(dev->bus) ==
-					pci_domain_nr(pcidev->bus)) {
-				found = 1;
-				*domain = 0;
-				*bus = busnr;
-				*devfn = PCI_DEVFN(slot, 0);
-				goto out;
-			}
-		}
-out:
-	spin_unlock_irqrestore(&slot_dev->lock, flags);
-	return found;
-
-}

drivers/xen/xen-pciback/vpci.c

@@ -12,6 +12,7 @@
 #include "pciback.h"
 
 #define PCI_SLOT_MAX 32
+#define DRV_NAME	"xen-pciback"
 
 struct vpci_dev_data {
 	/* Access to dev_list must be protected by lock */
@@ -24,9 +25,9 @@ static inline struct list_head *list_first(struct list_head *head)
 	return head->next;
 }
 
-struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
-				    unsigned int domain, unsigned int bus,
-				    unsigned int devfn)
+struct pci_dev *xen_pcibk_get_pci_dev(struct xen_pcibk_device *pdev,
+				      unsigned int domain, unsigned int bus,
+				      unsigned int devfn)
 {
 	struct pci_dev_entry *entry;
 	struct pci_dev *dev = NULL;
@@ -62,8 +63,8 @@ static inline int match_slot(struct pci_dev *l, struct pci_dev *r)
 	return 0;
 }
 
-int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
-			int devid, publish_pci_dev_cb publish_cb)
+int xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev, struct pci_dev *dev,
+			  int devid, publish_pci_dev_cb publish_cb)
 {
 	int err = 0, slot, func = -1;
 	struct pci_dev_entry *t, *dev_entry;
@@ -96,7 +97,7 @@ int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
 				       struct pci_dev_entry, list);
 
 			if (match_slot(dev, t->dev)) {
-				pr_info("pciback: vpci: %s: "
+				pr_info(DRV_NAME ": vpci: %s: "
 					"assign to virtual slot %d func %d\n",
 					pci_name(dev), slot,
 					PCI_FUNC(dev->devfn));
@@ -111,8 +112,8 @@ int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
 	/* Assign to a new slot on the virtual PCI bus */
 	for (slot = 0; slot < PCI_SLOT_MAX; slot++) {
 		if (list_empty(&vpci_dev->dev_list[slot])) {
-			printk(KERN_INFO
-			       "pciback: vpci: %s: assign to virtual slot %d\n",
+			printk(KERN_INFO DRV_NAME
+			       ": vpci: %s: assign to virtual slot %d\n",
 			       pci_name(dev), slot);
 			list_add_tail(&dev_entry->list,
 				      &vpci_dev->dev_list[slot]);
@@ -136,7 +137,8 @@ out:
 	return err;
 }
 
-void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev)
+void xen_pcibk_release_pci_dev(struct xen_pcibk_device *pdev,
+			       struct pci_dev *dev)
 {
 	int slot;
 	struct vpci_dev_data *vpci_dev = pdev->pci_dev_data;
@@ -165,7 +167,7 @@ out:
 		pcistub_put_pci_dev(found_dev);
 }
 
-int pciback_init_devices(struct pciback_device *pdev)
+int xen_pcibk_init_devices(struct xen_pcibk_device *pdev)
 {
 	int slot;
 	struct vpci_dev_data *vpci_dev;
@@ -184,14 +186,14 @@ int pciback_init_devices(struct pciback_device *pdev)
 	return 0;
 }
 
-int pciback_publish_pci_roots(struct pciback_device *pdev,
-			      publish_pci_root_cb publish_cb)
+int xen_pcibk_publish_pci_roots(struct xen_pcibk_device *pdev,
+				publish_pci_root_cb publish_cb)
 {
 	/* The Virtual PCI bus has only one root */
 	return publish_cb(pdev, 0, 0);
 }
 
-void pciback_release_devices(struct pciback_device *pdev)
+void xen_pcibk_release_devices(struct xen_pcibk_device *pdev)
 {
 	int slot;
 	struct vpci_dev_data *vpci_dev = pdev->pci_dev_data;
@@ -210,10 +212,10 @@ void pciback_release_devices(struct pciback_device *pdev)
 	pdev->pci_dev_data = NULL;
 }
 
-int pciback_get_pcifront_dev(struct pci_dev *pcidev,
-			     struct pciback_device *pdev,
-			     unsigned int *domain, unsigned int *bus,
-			     unsigned int *devfn)
+int xen_pcibk_get_pcifront_dev(struct pci_dev *pcidev,
+			       struct xen_pcibk_device *pdev,
+			       unsigned int *domain, unsigned int *bus,
+			       unsigned int *devfn)
 {
 	struct pci_dev_entry *entry;
 	struct pci_dev *dev = NULL;

drivers/xen/xen-pciback/xenbus.c

@@ -14,14 +14,15 @@
 #include <linux/workqueue.h>
 #include "pciback.h"
 
+#define	DRV_NAME	"xen-pciback"
 #define INVALID_EVTCHN_IRQ  (-1)
-struct workqueue_struct *pciback_wq;
+struct workqueue_struct *xen_pcibk_wq;
 
-static struct pciback_device *alloc_pdev(struct xenbus_device *xdev)
+static struct xen_pcibk_device *alloc_pdev(struct xenbus_device *xdev)
 {
-	struct pciback_device *pdev;
+	struct xen_pcibk_device *pdev;
 
-	pdev = kzalloc(sizeof(struct pciback_device), GFP_KERNEL);
+	pdev = kzalloc(sizeof(struct xen_pcibk_device), GFP_KERNEL);
 	if (pdev == NULL)
 		goto out;
 	dev_dbg(&xdev->dev, "allocated pdev @ 0x%p\n", pdev);
@@ -35,9 +36,9 @@ static struct pciback_device *alloc_pdev(struct xenbus_device *xdev)
 	pdev->evtchn_irq = INVALID_EVTCHN_IRQ;
 	pdev->be_watching = 0;
 
-	INIT_WORK(&pdev->op_work, pciback_do_op);
+	INIT_WORK(&pdev->op_work, xen_pcibk_do_op);
 
-	if (pciback_init_devices(pdev)) {
+	if (xen_pcibk_init_devices(pdev)) {
 		kfree(pdev);
 		pdev = NULL;
 	}
@@ -45,7 +46,7 @@ out:
 	return pdev;
 }
 
-static void pciback_disconnect(struct pciback_device *pdev)
+static void xen_pcibk_disconnect(struct xen_pcibk_device *pdev)
 {
 	spin_lock(&pdev->dev_lock);
 
@@ -60,7 +61,7 @@ static void pciback_disconnect(struct pciback_device *pdev)
 	 * before releasing the shared memory */
 
 	/* Note, the workqueue does not use spinlocks at all.*/
-	flush_workqueue(pciback_wq);
+	flush_workqueue(xen_pcibk_wq);
 
 	spin_lock(&pdev->dev_lock);
 	if (pdev->sh_info != NULL) {
@@ -71,16 +72,16 @@ static void pciback_disconnect(struct pciback_device *pdev)
 
 }
 
-static void free_pdev(struct pciback_device *pdev)
+static void free_pdev(struct xen_pcibk_device *pdev)
 {
 	if (pdev->be_watching) {
 		unregister_xenbus_watch(&pdev->be_watch);
 		pdev->be_watching = 0;
 	}
 
-	pciback_disconnect(pdev);
+	xen_pcibk_disconnect(pdev);
 
-	pciback_release_devices(pdev);
+	xen_pcibk_release_devices(pdev);
 
 	dev_set_drvdata(&pdev->xdev->dev, NULL);
 	pdev->xdev = NULL;
@@ -88,7 +89,7 @@ static void free_pdev(struct pciback_device *pdev)
 	kfree(pdev);
 }
 
-static int pciback_do_attach(struct pciback_device *pdev, int gnt_ref,
+static int xen_pcibk_do_attach(struct xen_pcibk_device *pdev, int gnt_ref,
 			     int remote_evtchn)
 {
 	int err = 0;
@@ -110,8 +111,8 @@ static int pciback_do_attach(struct pciback_device *pdev, int gnt_ref,
 	spin_unlock(&pdev->dev_lock);
 
 	err = bind_interdomain_evtchn_to_irqhandler(
-		pdev->xdev->otherend_id, remote_evtchn, pciback_handle_event,
-		0, "pciback", pdev);
+		pdev->xdev->otherend_id, remote_evtchn, xen_pcibk_handle_event,
+		0, DRV_NAME, pdev);
 	if (err < 0) {
 		xenbus_dev_fatal(pdev->xdev, err,
 				 "Error binding event channel to IRQ");
@@ -128,7 +129,7 @@ out:
 	return err;
 }
 
-static int pciback_attach(struct pciback_device *pdev)
+static int xen_pcibk_attach(struct xen_pcibk_device *pdev)
 {
 	int err = 0;
 	int gnt_ref, remote_evtchn;
@@ -161,12 +162,12 @@ static int pciback_attach(struct pciback_device *pdev)
 	if (magic == NULL || strcmp(magic, XEN_PCI_MAGIC) != 0) {
 		xenbus_dev_fatal(pdev->xdev, -EFAULT,
 				 "version mismatch (%s/%s) with pcifront - "
-				 "halting pciback",
+				 "halting xen_pcibk",
 				 magic, XEN_PCI_MAGIC);
 		goto out;
 	}
 
-	err = pciback_do_attach(pdev, gnt_ref, remote_evtchn);
+	err = xen_pcibk_do_attach(pdev, gnt_ref, remote_evtchn);
 	if (err)
 		goto out;
 
@@ -185,7 +186,7 @@ out:
 	return err;
 }
 
-static int pciback_publish_pci_dev(struct pciback_device *pdev,
+static int xen_pcibk_publish_pci_dev(struct xen_pcibk_device *pdev,
 				   unsigned int domain, unsigned int bus,
 				   unsigned int devfn, unsigned int devid)
 {
@@ -207,7 +208,7 @@ out:
 	return err;
 }
 
-static int pciback_export_device(struct pciback_device *pdev,
+static int xen_pcibk_export_device(struct xen_pcibk_device *pdev,
 				 int domain, int bus, int slot, int func,
 				 int devid)
 {
@@ -228,7 +229,8 @@ static int pciback_export_device(struct pciback_device *pdev,
 		goto out;
 	}
 
-	err = pciback_add_pci_dev(pdev, dev, devid, pciback_publish_pci_dev);
+	err = xen_pcibk_add_pci_dev(pdev, dev, devid,
+				    xen_pcibk_publish_pci_dev);
 	if (err)
 		goto out;
 
@@ -253,7 +255,7 @@ out:
 	return err;
 }
 
-static int pciback_remove_device(struct pciback_device *pdev,
+static int xen_pcibk_remove_device(struct xen_pcibk_device *pdev,
 				 int domain, int bus, int slot, int func)
 {
 	int err = 0;
@@ -262,7 +264,7 @@ static int pciback_remove_device(struct pciback_device *pdev,
 	dev_dbg(&pdev->xdev->dev, "removing dom %x bus %x slot %x func %x\n",
 		domain, bus, slot, func);
 
-	dev = pciback_get_pci_dev(pdev, domain, bus, PCI_DEVFN(slot, func));
+	dev = xen_pcibk_get_pci_dev(pdev, domain, bus, PCI_DEVFN(slot, func));
 	if (!dev) {
 		err = -EINVAL;
 		dev_dbg(&pdev->xdev->dev, "Couldn't locate PCI device "
@@ -274,13 +276,13 @@ static int pciback_remove_device(struct pciback_device *pdev,
 	dev_dbg(&dev->dev, "unregistering for %d\n", pdev->xdev->otherend_id);
 	xen_unregister_device_domain_owner(dev);
 
-	pciback_release_pci_dev(pdev, dev);
+	xen_pcibk_release_pci_dev(pdev, dev);
 
 out:
 	return err;
 }
 
-static int pciback_publish_pci_root(struct pciback_device *pdev,
+static int xen_pcibk_publish_pci_root(struct xen_pcibk_device *pdev,
 				    unsigned int domain, unsigned int bus)
 {
 	unsigned int d, b;
@@ -340,7 +342,7 @@ out:
 	return err;
 }
 
-static int pciback_reconfigure(struct pciback_device *pdev)
+static int xen_pcibk_reconfigure(struct xen_pcibk_device *pdev)
 {
 	int err = 0;
 	int num_devs;
@@ -411,14 +413,14 @@ static int pciback_reconfigure(struct pciback_device *pdev)
 				goto out;
 			}
 
-			err = pciback_export_device(pdev, domain, bus, slot,
+			err = xen_pcibk_export_device(pdev, domain, bus, slot,
 						    func, i);
 			if (err)
 				goto out;
 
 			/* Publish pci roots. */
-			err = pciback_publish_pci_roots(pdev,
-						pciback_publish_pci_root);
+			err = xen_pcibk_publish_pci_roots(pdev,
+						xen_pcibk_publish_pci_root);
 			if (err) {
 				xenbus_dev_fatal(pdev->xdev, err,
 						 "Error while publish PCI root"
@@ -465,7 +467,7 @@ static int pciback_reconfigure(struct pciback_device *pdev)
 				goto out;
 			}
 
-			err = pciback_remove_device(pdev, domain, bus, slot,
+			err = xen_pcibk_remove_device(pdev, domain, bus, slot,
 						    func);
 			if (err)
 				goto out;
@@ -493,20 +495,20 @@ out:
 	return 0;
 }
 
-static void pciback_frontend_changed(struct xenbus_device *xdev,
+static void xen_pcibk_frontend_changed(struct xenbus_device *xdev,
 				     enum xenbus_state fe_state)
 {
-	struct pciback_device *pdev = dev_get_drvdata(&xdev->dev);
+	struct xen_pcibk_device *pdev = dev_get_drvdata(&xdev->dev);
 
 	dev_dbg(&xdev->dev, "fe state changed %d\n", fe_state);
 
 	switch (fe_state) {
 	case XenbusStateInitialised:
-		pciback_attach(pdev);
+		xen_pcibk_attach(pdev);
 		break;
 
 	case XenbusStateReconfiguring:
-		pciback_reconfigure(pdev);
+		xen_pcibk_reconfigure(pdev);
 		break;
 
 	case XenbusStateConnected:
@@ -517,12 +519,12 @@ static void pciback_frontend_changed(struct xenbus_device *xdev,
 		break;
 
 	case XenbusStateClosing:
-		pciback_disconnect(pdev);
+		xen_pcibk_disconnect(pdev);
 		xenbus_switch_state(xdev, XenbusStateClosing);
 		break;
 
 	case XenbusStateClosed:
-		pciback_disconnect(pdev);
+		xen_pcibk_disconnect(pdev);
 		xenbus_switch_state(xdev, XenbusStateClosed);
 		if (xenbus_dev_is_online(xdev))
 			break;
@@ -537,7 +539,7 @@ static void pciback_frontend_changed(struct xenbus_device *xdev,
 	}
 }
 
-static int pciback_setup_backend(struct pciback_device *pdev)
+static int xen_pcibk_setup_backend(struct xen_pcibk_device *pdev)
 {
 	/* Get configuration from xend (if available now) */
 	int domain, bus, slot, func;
@@ -590,7 +592,7 @@ static int pciback_setup_backend(struct pciback_device *pdev)
 			goto out;
 		}
 
-		err = pciback_export_device(pdev, domain, bus, slot, func, i);
+		err = xen_pcibk_export_device(pdev, domain, bus, slot, func, i);
 		if (err)
 			goto out;
 
@@ -612,7 +614,7 @@ static int pciback_setup_backend(struct pciback_device *pdev)
 		}
 	}
 
-	err = pciback_publish_pci_roots(pdev, pciback_publish_pci_root);
+	err = xen_pcibk_publish_pci_roots(pdev, xen_pcibk_publish_pci_root);
 	if (err) {
 		xenbus_dev_fatal(pdev->xdev, err,
 				 "Error while publish PCI root buses "
@@ -628,20 +630,20 @@ static int pciback_setup_backend(struct pciback_device *pdev)
 out:
 	if (!err)
 		/* see if pcifront is already configured (if not, we'll wait) */
-		pciback_attach(pdev);
+		xen_pcibk_attach(pdev);
 
 	return err;
 }
 
-static void pciback_be_watch(struct xenbus_watch *watch,
+static void xen_pcibk_be_watch(struct xenbus_watch *watch,
 			     const char **vec, unsigned int len)
 {
-	struct pciback_device *pdev =
-	    container_of(watch, struct pciback_device, be_watch);
+	struct xen_pcibk_device *pdev =
+	    container_of(watch, struct xen_pcibk_device, be_watch);
 
 	switch (xenbus_read_driver_state(pdev->xdev->nodename)) {
 	case XenbusStateInitWait:
-		pciback_setup_backend(pdev);
+		xen_pcibk_setup_backend(pdev);
 		break;
 
 	default:
@@ -649,16 +651,16 @@ static void pciback_be_watch(struct xenbus_watch *watch,
 	}
 }
 
-static int pciback_xenbus_probe(struct xenbus_device *dev,
+static int xen_pcibk_xenbus_probe(struct xenbus_device *dev,
 				const struct xenbus_device_id *id)
 {
 	int err = 0;
-	struct pciback_device *pdev = alloc_pdev(dev);
+	struct xen_pcibk_device *pdev = alloc_pdev(dev);
 
 	if (pdev == NULL) {
 		err = -ENOMEM;
 		xenbus_dev_fatal(dev, err,
-				 "Error allocating pciback_device struct");
+				 "Error allocating xen_pcibk_device struct");
 		goto out;
 	}
 
@@ -669,7 +671,7 @@ static int pciback_xenbus_probe(struct xenbus_device *dev,
 
 	/* watch the backend node for backend configuration information */
 	err = xenbus_watch_path(dev, dev->nodename, &pdev->be_watch,
-				pciback_be_watch);
+				xen_pcibk_be_watch);
 	if (err)
 		goto out;
 
@@ -678,15 +680,15 @@ static int pciback_xenbus_probe(struct xenbus_device *dev,
 	/* We need to force a call to our callback here in case
 	 * xend already configured us!
 	 */
-	pciback_be_watch(&pdev->be_watch, NULL, 0);
+	xen_pcibk_be_watch(&pdev->be_watch, NULL, 0);
 
 out:
 	return err;
 }
 
-static int pciback_xenbus_remove(struct xenbus_device *dev)
+static int xen_pcibk_xenbus_remove(struct xenbus_device *dev)
 {
-	struct pciback_device *pdev = dev_get_drvdata(&dev->dev);
+	struct xen_pcibk_device *pdev = dev_get_drvdata(&dev->dev);
 
 	if (pdev != NULL)
 		free_pdev(pdev);
@@ -699,28 +701,28 @@ static const struct xenbus_device_id xenpci_ids[] = {
 	{""},
 };
 
-static struct xenbus_driver xenbus_pciback_driver = {
-	.name			= "pciback",
+static struct xenbus_driver xenbus_xen_pcibk_driver = {
+	.name			= DRV_NAME,
 	.owner			= THIS_MODULE,
 	.ids			= xenpci_ids,
-	.probe			= pciback_xenbus_probe,
-	.remove			= pciback_xenbus_remove,
-	.otherend_changed	= pciback_frontend_changed,
+	.probe			= xen_pcibk_xenbus_probe,
+	.remove			= xen_pcibk_xenbus_remove,
+	.otherend_changed	= xen_pcibk_frontend_changed,
 };
 
-int __init pciback_xenbus_register(void)
+int __init xen_pcibk_xenbus_register(void)
 {
-	pciback_wq = create_workqueue("pciback_workqueue");
-	if (!pciback_wq) {
+	xen_pcibk_wq = create_workqueue("xen_pciback_workqueue");
+	if (!xen_pcibk_wq) {
 		printk(KERN_ERR "%s: create"
-			"pciback_workqueue failed\n", __func__);
+			"xen_pciback_workqueue failed\n", __func__);
 		return -EFAULT;
 	}
-	return xenbus_register_backend(&xenbus_pciback_driver);
+	return xenbus_register_backend(&xenbus_xen_pcibk_driver);
 }
 
-void __exit pciback_xenbus_unregister(void)
+void __exit xen_pcibk_xenbus_unregister(void)
 {
-	destroy_workqueue(pciback_wq);
-	xenbus_unregister_driver(&xenbus_pciback_driver);
+	destroy_workqueue(xen_pcibk_wq);
+	xenbus_unregister_driver(&xenbus_xen_pcibk_driver);
 }