static __initdata struct cpu_evtchn_s init_evtchn_mask = {
.bits[0 ... (NR_EVENT_CHANNELS/BITS_PER_LONG)-1] = ~0ul,
};
-static struct cpu_evtchn_s *cpu_evtchn_mask_p = &init_evtchn_mask;
+static struct cpu_evtchn_s __refdata *cpu_evtchn_mask_p = &init_evtchn_mask;
static inline unsigned long *cpu_evtchn_mask(int cpu)
{
BUG_ON(irq == -1);
#ifdef CONFIG_SMP
- cpumask_copy(irq_to_desc(irq)->affinity, cpumask_of(cpu));
+ cpumask_copy(irq_to_desc(irq)->irq_data.affinity, cpumask_of(cpu));
#endif
clear_bit(chn, cpu_evtchn_mask(cpu_from_irq(irq)));
/* By default all event channels notify CPU#0. */
for_each_irq_desc(i, desc) {
- cpumask_copy(desc->affinity, cpumask_of(0));
+ cpumask_copy(desc->irq_data.affinity, cpumask_of(0));
}
#endif
return desc && desc->action == NULL;
}
-static unsigned int startup_pirq(unsigned int irq)
+static unsigned int __startup_pirq(unsigned int irq)
{
struct evtchn_bind_pirq bind_pirq;
struct irq_info *info = info_for_irq(irq);
return 0;
}
-static void shutdown_pirq(unsigned int irq)
+static unsigned int startup_pirq(struct irq_data *data)
+{
+ return __startup_pirq(data->irq);
+}
+
+static void shutdown_pirq(struct irq_data *data)
{
struct evtchn_close close;
+ unsigned int irq = data->irq;
struct irq_info *info = info_for_irq(irq);
int evtchn = evtchn_from_irq(irq);
info->evtchn = 0;
}
-static void enable_pirq(unsigned int irq)
+static void enable_pirq(struct irq_data *data)
{
- startup_pirq(irq);
+ startup_pirq(data);
}
-static void disable_pirq(unsigned int irq)
+static void disable_pirq(struct irq_data *data)
{
}
-static void ack_pirq(unsigned int irq)
+static void ack_pirq(struct irq_data *data)
{
- int evtchn = evtchn_from_irq(irq);
+ int evtchn = evtchn_from_irq(data->irq);
- move_native_irq(irq);
+ move_native_irq(data->irq);
if (VALID_EVTCHN(evtchn)) {
mask_evtchn(evtchn);
}
#ifdef CONFIG_PCI_MSI
-#include <linux/msi.h>
-#include "../pci/msi.h"
-
-static int find_unbound_pirq(int type)
+int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc)
{
- int rc, i;
+ int rc;
struct physdev_get_free_pirq op_get_free_pirq;
- op_get_free_pirq.type = type;
+ op_get_free_pirq.type = MAP_PIRQ_TYPE_MSI;
rc = HYPERVISOR_physdev_op(PHYSDEVOP_get_free_pirq, &op_get_free_pirq);
- if (!rc)
- return op_get_free_pirq.pirq;
-
- for (i = 0; i < nr_irqs; i++) {
- if (pirq_to_irq[i] < 0)
- return i;
- }
- return -1;
-}
-void xen_allocate_pirq_msi(char *name, int *irq, int *pirq, int alloc)
-{
- spin_lock(&irq_mapping_update_lock);
+ WARN_ONCE(rc == -ENOSYS,
+ "hypervisor does not support the PHYSDEVOP_get_free_pirq interface\n");
- if (alloc & XEN_ALLOC_IRQ) {
- *irq = xen_allocate_irq_dynamic();
- if (*irq == -1)
- goto out;
- }
-
- if (alloc & XEN_ALLOC_PIRQ) {
- *pirq = find_unbound_pirq(MAP_PIRQ_TYPE_MSI);
- if (*pirq == -1)
- goto out;
- }
-
- set_irq_chip_and_handler_name(*irq, &xen_pirq_chip,
- handle_level_irq, name);
-
- irq_info[*irq] = mk_pirq_info(0, *pirq, 0, 0);
- pirq_to_irq[*pirq] = *irq;
-
-out:
- spin_unlock(&irq_mapping_update_lock);
+ return rc ? -1 : op_get_free_pirq.pirq;
}
-int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type)
+int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
+ int pirq, int vector, const char *name)
{
- int irq = -1;
- struct physdev_map_pirq map_irq;
- int rc;
- int pos;
- u32 table_offset, bir;
-
- memset(&map_irq, 0, sizeof(map_irq));
- map_irq.domid = DOMID_SELF;
- map_irq.type = MAP_PIRQ_TYPE_MSI;
- map_irq.index = -1;
- map_irq.pirq = -1;
- map_irq.bus = dev->bus->number;
- map_irq.devfn = dev->devfn;
-
- if (type == PCI_CAP_ID_MSIX) {
- pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
-
- pci_read_config_dword(dev, msix_table_offset_reg(pos),
- &table_offset);
- bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
-
- map_irq.table_base = pci_resource_start(dev, bir);
- map_irq.entry_nr = msidesc->msi_attrib.entry_nr;
- }
+ int irq, ret;
spin_lock(&irq_mapping_update_lock);
irq = xen_allocate_irq_dynamic();
-
if (irq == -1)
goto out;
- rc = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq, &map_irq);
- if (rc) {
- printk(KERN_WARNING "xen map irq failed %d\n", rc);
-
- xen_free_irq(irq);
-
- irq = -1;
- goto out;
- }
- irq_info[irq] = mk_pirq_info(0, map_irq.pirq, 0, map_irq.index);
-
set_irq_chip_and_handler_name(irq, &xen_pirq_chip,
- handle_level_irq,
- (type == PCI_CAP_ID_MSIX) ? "msi-x":"msi");
+ handle_level_irq, name);
+ irq_info[irq] = mk_pirq_info(0, pirq, 0, vector);
+ pirq_to_irq[pirq] = irq;
+ ret = set_irq_msi(irq, msidesc);
+ if (ret < 0)
+ goto error_irq;
out:
spin_unlock(&irq_mapping_update_lock);
return irq;
+error_irq:
+ spin_unlock(&irq_mapping_update_lock);
+ xen_free_irq(irq);
+ return -1;
}
#endif
printk(KERN_WARNING "unmap irq failed %d\n", rc);
goto out;
}
- pirq_to_irq[info->u.pirq.pirq] = -1;
}
+ pirq_to_irq[info->u.pirq.pirq] = -1;
+
irq_info[irq] = mk_unbound_info();
xen_free_irq(irq);
if (irq < 0)
return irq;
- irqflags |= IRQF_NO_SUSPEND;
+ irqflags |= IRQF_NO_SUSPEND | IRQF_FORCE_RESUME;
retval = request_irq(irq, handler, irqflags, devname, dev_id);
if (retval != 0) {
unbind_from_irq(irq);
return 0;
}
-static int set_affinity_irq(unsigned irq, const struct cpumask *dest)
+static int set_affinity_irq(struct irq_data *data, const struct cpumask *dest,
+ bool force)
{
unsigned tcpu = cpumask_first(dest);
- return rebind_irq_to_cpu(irq, tcpu);
+ return rebind_irq_to_cpu(data->irq, tcpu);
}
int resend_irq_on_evtchn(unsigned int irq)
return 1;
}
-static void enable_dynirq(unsigned int irq)
+static void enable_dynirq(struct irq_data *data)
{
- int evtchn = evtchn_from_irq(irq);
+ int evtchn = evtchn_from_irq(data->irq);
if (VALID_EVTCHN(evtchn))
unmask_evtchn(evtchn);
}
-static void disable_dynirq(unsigned int irq)
+static void disable_dynirq(struct irq_data *data)
{
- int evtchn = evtchn_from_irq(irq);
+ int evtchn = evtchn_from_irq(data->irq);
if (VALID_EVTCHN(evtchn))
mask_evtchn(evtchn);
}
-static void ack_dynirq(unsigned int irq)
+static void ack_dynirq(struct irq_data *data)
{
- int evtchn = evtchn_from_irq(irq);
+ int evtchn = evtchn_from_irq(data->irq);
- move_masked_irq(irq);
+ move_masked_irq(data->irq);
if (VALID_EVTCHN(evtchn))
unmask_evtchn(evtchn);
}
-static int retrigger_dynirq(unsigned int irq)
+static int retrigger_dynirq(struct irq_data *data)
{
- int evtchn = evtchn_from_irq(irq);
+ int evtchn = evtchn_from_irq(data->irq);
struct shared_info *sh = HYPERVISOR_shared_info;
int ret = 0;
printk(KERN_DEBUG "xen: --> irq=%d, pirq=%d\n", irq, map_irq.pirq);
- startup_pirq(irq);
+ __startup_pirq(irq);
}
}
void xen_irq_resume(void)
{
unsigned int cpu, irq, evtchn;
- struct irq_desc *desc;
init_evtchn_cpu_bindings();
restore_cpu_ipis(cpu);
}
- /*
- * Unmask any IRQF_NO_SUSPEND IRQs which are enabled. These
- * are not handled by the IRQ core.
- */
- for_each_irq_desc(irq, desc) {
- if (!desc->action || !(desc->action->flags & IRQF_NO_SUSPEND))
- continue;
- if (desc->status & IRQ_DISABLED)
- continue;
-
- evtchn = evtchn_from_irq(irq);
- if (evtchn == -1)
- continue;
-
- unmask_evtchn(evtchn);
- }
-
restore_cpu_pirqs();
}
static struct irq_chip xen_dynamic_chip __read_mostly = {
- .name = "xen-dyn",
+ .name = "xen-dyn",
- .disable = disable_dynirq,
- .mask = disable_dynirq,
- .unmask = enable_dynirq,
+ .irq_disable = disable_dynirq,
+ .irq_mask = disable_dynirq,
+ .irq_unmask = enable_dynirq,
- .eoi = ack_dynirq,
- .set_affinity = set_affinity_irq,
- .retrigger = retrigger_dynirq,
+ .irq_eoi = ack_dynirq,
+ .irq_set_affinity = set_affinity_irq,
+ .irq_retrigger = retrigger_dynirq,
};
static struct irq_chip xen_pirq_chip __read_mostly = {
- .name = "xen-pirq",
+ .name = "xen-pirq",
- .startup = startup_pirq,
- .shutdown = shutdown_pirq,
+ .irq_startup = startup_pirq,
+ .irq_shutdown = shutdown_pirq,
- .enable = enable_pirq,
- .unmask = enable_pirq,
+ .irq_enable = enable_pirq,
+ .irq_unmask = enable_pirq,
- .disable = disable_pirq,
- .mask = disable_pirq,
+ .irq_disable = disable_pirq,
+ .irq_mask = disable_pirq,
- .ack = ack_pirq,
+ .irq_ack = ack_pirq,
- .set_affinity = set_affinity_irq,
+ .irq_set_affinity = set_affinity_irq,
- .retrigger = retrigger_dynirq,
+ .irq_retrigger = retrigger_dynirq,
};
static struct irq_chip xen_percpu_chip __read_mostly = {
- .name = "xen-percpu",
+ .name = "xen-percpu",
- .disable = disable_dynirq,
- .mask = disable_dynirq,
- .unmask = enable_dynirq,
+ .irq_disable = disable_dynirq,
+ .irq_mask = disable_dynirq,
+ .irq_unmask = enable_dynirq,
- .ack = ack_dynirq,
+ .irq_ack = ack_dynirq,
};
int xen_set_callback_via(uint64_t via)
git.openpandora.org / pandora-kernel.git / blobdiff