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
#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); \
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;
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)) {
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;
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))
|| (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;
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;
}
}
-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;
}
}
-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;
}
}
-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;
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;
* 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();
}
/* 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;
}
}
/* 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__ */
#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) {
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)
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;
}
+++ /dev/null
-/*
- * 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
+++ /dev/null
-/*
- * 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;
-}
-
+++ /dev/null
-/*
- * 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,
-};
+++ /dev/null
-/*
- * 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,
-};
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)
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;
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)
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)
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);
}
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;
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;
}
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;
}
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;
}
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;
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;
{
.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,
{
.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,
},
{}
{}
};
-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;
}
#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)
{
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) {
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);
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;
#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
+++ /dev/null
-/*
- * 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;
-
-}
-
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;
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;
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;
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;
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;
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;
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;
#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);
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
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);
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;
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)
{
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;
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;
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)).
*/
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;
* 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);
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);
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) {
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);
}
}
/* 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;
/*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);
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,
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;
}
/*
-* 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);
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;
}
-/*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);
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;
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
* 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);
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;
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);
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;
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,
};
/*
* 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,
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);
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);
}
}
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:
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;
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;
{
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;
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;
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);
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)
* 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();
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;
}
#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)
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;
#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");
#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;
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);
#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;
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 " \
}
/* 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) {
}
}
}
+
+#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;
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:
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();
/* 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++;
+++ /dev/null
-/*
- * 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;
-
-}
#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 */
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;
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;
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));
/* 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]);
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;
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;
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;
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;
#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);
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;
}
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);
* 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) {
}
-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;
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;
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");
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;
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;
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)
{
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)
{
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;
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;
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 "
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;
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;
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"
goto out;
}
- err = pciback_remove_device(pdev, domain, bus, slot,
+ err = xen_pcibk_remove_device(pdev, domain, bus, slot,
func);
if (err)
goto 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:
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;
}
}
-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;
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;
}
}
- 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 "
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:
}
}
-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;
}
/* 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;
/* 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);
{""},
};
-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);
}
git.openpandora.org / pandora-kernel.git / commitdiff