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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/parisc/gsc.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/parisc/gsc.h')
-rw-r--r-- | drivers/parisc/gsc.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/parisc/gsc.h b/drivers/parisc/gsc.h new file mode 100644 index 0000000000..73cbd0bb19 --- /dev/null +++ b/drivers/parisc/gsc.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * drivers/parisc/gsc.h + * Declarations for functions in gsc.c + * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox + */ + +#include <linux/interrupt.h> +#include <asm/hardware.h> +#include <asm/parisc-device.h> + +#define OFFSET_IRR 0x0000 /* Interrupt request register */ +#define OFFSET_IMR 0x0004 /* Interrupt mask register */ +#define OFFSET_IPR 0x0008 /* Interrupt pending register */ +#define OFFSET_ICR 0x000C /* Interrupt control register */ +#define OFFSET_IAR 0x0010 /* Interrupt address register */ + +/* PA I/O Architected devices support at least 5 bits in the EIM register. */ +#define GSC_EIM_WIDTH 5 + +struct gsc_irq { + unsigned long txn_addr; /* IRQ "target" */ + int txn_data; /* HW "IRQ" */ + int irq; /* virtual IRQ */ +}; + +struct gsc_asic { + struct parisc_device *gsc; + unsigned long hpa; + char *name; + int version; + int type; + int eim; + struct gsc_irq gsc_irq; + int global_irq[32]; +}; + +int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic); +int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */ +int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */ +int gsc_assign_irq(struct irq_chip *type, void *data); +int gsc_find_local_irq(unsigned int irq, int *global_irq, int limit); +void gsc_fixup_irqs(struct parisc_device *parent, void *ctrl, + void (*choose)(struct parisc_device *child, void *ctrl)); +void gsc_asic_assign_irq(struct gsc_asic *asic, int local_irq, int *irqp); + +irqreturn_t gsc_asic_intr(int irq, void *dev); |