include/linux/htirq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef LINUX_HTIRQ_H
   3 #define LINUX_HTIRQ_H
   4
   5 struct pci_dev;
   6 struct irq_data;
   7
   8 struct ht_irq_msg {
   9         u32     address_lo;     /* low 32 bits of the ht irq message */
  10         u32     address_hi;     /* high 32 bits of the it irq message */
  11 };
  12
  13 typedef void (ht_irq_update_t)(struct pci_dev *dev, int irq,
  14                                struct ht_irq_msg *msg);
  15
  16 struct ht_irq_cfg {
  17         struct pci_dev *dev;
  18          /* Update callback used to cope with buggy hardware */
  19         ht_irq_update_t *update;
  20         unsigned pos;
  21         unsigned idx;
  22         struct ht_irq_msg msg;
  23 };
  24
  25 /* Helper functions.. */
  26 void fetch_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
  27 void write_ht_irq_msg(unsigned int irq, struct ht_irq_msg *msg);
  28 void mask_ht_irq(struct irq_data *data);
  29 void unmask_ht_irq(struct irq_data *data);
  30
  31 /* The arch hook for getting things started */
  32 int arch_setup_ht_irq(int idx, int pos, struct pci_dev *dev,
  33                       ht_irq_update_t *update);
  34 void arch_teardown_ht_irq(unsigned int irq);
  35
  36 /* For drivers of buggy hardware */
  37 int __ht_create_irq(struct pci_dev *dev, int idx, ht_irq_update_t *update);
  38
  39 #endif /* LINUX_HTIRQ_H */