struct ht_irq_cfg {
struct pci_dev *dev;
+ /* Update callback used to cope with buggy hardware */
+ ht_irq_update_t *update;
unsigned pos;
unsigned idx;
struct ht_irq_msg msg;
pci_write_config_byte(cfg->dev, cfg->pos + 2, cfg->idx + 1);
pci_write_config_dword(cfg->dev, cfg->pos + 4, msg->address_hi);
}
+ if (cfg->update)
+ cfg->update(cfg->dev, irq, msg);
spin_unlock_irqrestore(&ht_irq_lock, flags);
cfg->msg = *msg;
}
}
/**
- * ht_create_irq - create an irq and attach it to a device.
+ * __ht_create_irq - create an irq and attach it to a device.
* @dev: The hypertransport device to find the irq capability on.
* @idx: Which of the possible irqs to attach to.
- *
- * ht_create_irq is needs to be called for all hypertransport devices
- * that generate irqs.
+ * @update: Function to be called when changing the htirq message
*
* The irq number of the new irq or a negative error value is returned.
*/
-int ht_create_irq(struct pci_dev *dev, int idx)
+int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update)
{
struct ht_irq_cfg *cfg;
unsigned long flags;
return -ENOMEM;
cfg->dev = dev;
+ cfg->update = update;
cfg->pos = pos;
cfg->idx = 0x10 + (idx * 2);
/* Initialize msg to a value that will never match the first write. */
return irq;
}
+/**
+ * ht_create_irq - create an irq and attach it to a device.
+ * @dev: The hypertransport device to find the irq capability on.
+ * @idx: Which of the possible irqs to attach to.
+ *
+ * ht_create_irq needs to be called for all hypertransport devices
+ * that generate irqs.
+ *
+ * The irq number of the new irq or a negative error value is returned.
+ */
+int ht_create_irq(struct pci_dev *dev, int idx)
+{
+ return __ht_create_irq(dev, idx, NULL);
+}
+
/**
* ht_destroy_irq - destroy an irq created with ht_create_irq
*
kfree(cfg);
}
+EXPORT_SYMBOL(__ht_create_irq);
EXPORT_SYMBOL(ht_create_irq);
EXPORT_SYMBOL(ht_destroy_irq);
/* The arch hook for getting things started */
int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev);
+/* For drivers of buggy hardware */
+typedef void (ht_irq_update_t)(struct pci_dev *dev, int irq,
+ struct ht_irq_msg *msg);
+int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update);
+
#endif /* LINUX_HTIRQ_H */