gsc.h 1.5 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * drivers/parisc/gsc.h
  4. * Declarations for functions in gsc.c
  5. * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox
  6. */
  7. #include <linux/interrupt.h>
  8. #include <asm/hardware.h>
  9. #include <asm/parisc-device.h>
  10. #define OFFSET_IRR 0x0000 /* Interrupt request register */
  11. #define OFFSET_IMR 0x0004 /* Interrupt mask register */
  12. #define OFFSET_IPR 0x0008 /* Interrupt pending register */
  13. #define OFFSET_ICR 0x000C /* Interrupt control register */
  14. #define OFFSET_IAR 0x0010 /* Interrupt address register */
  15. /* PA I/O Architected devices support at least 5 bits in the EIM register. */
  16. #define GSC_EIM_WIDTH 5
  17. struct gsc_irq {
  18. unsigned long txn_addr; /* IRQ "target" */
  19. int txn_data; /* HW "IRQ" */
  20. int irq; /* virtual IRQ */
  21. };
  22. struct gsc_asic {
  23. struct parisc_device *gsc;
  24. unsigned long hpa;
  25. char *name;
  26. int version;
  27. int type;
  28. int eim;
  29. struct gsc_irq gsc_irq;
  30. int global_irq[32];
  31. };
  32. int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic);
  33. int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */
  34. int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */
  35. int gsc_assign_irq(struct irq_chip *type, void *data);
  36. int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit);
  37. void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl,
  38. void (*choose)(struct parisc_device *child, void *ctrl));
  39. void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp);
  40. irqreturn_t gsc_asic_intr(int irq, void *dev);