61 lines
2.3 KiB
C
Executable File
61 lines
2.3 KiB
C
Executable File
/****************************************************************************
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*
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* Copyright (c) 2014 - 2016 Samsung Electronics Co., Ltd. All rights reserved
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*
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****************************************************************************/
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#ifndef __MIFINTRBIT_H
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#define __MIFINTRBIT_H
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#include <linux/spinlock.h>
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/** MIF Interrupt Bit Handler prototype. */
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typedef void (*mifintrbit_handler)(int which_bit, void *data);
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struct mifintrbit; /* fwd - opaque pointer */
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#define MIFINTRBIT_NUM_INT 16
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/** Reserve MIF interrupt bits 0 in the to-r4 and to-m4 registers for purpose of forcing panics */
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#define MIFINTRBIT_RESERVED_PANIC_R4 0
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#ifdef CONFIG_SCSC_MX450_GDB_SUPPORT
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#define MIFINTRBIT_RESERVED_PANIC_M4 0
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#define MIFINTRBIT_RESERVED_PANIC_M4_1 0
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#else
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#define MIFINTRBIT_RESERVED_PANIC_M4 0
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#endif
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void mifintrbit_init(struct mifintrbit *intr, struct scsc_mif_abs *mif);
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void mifintrbit_deinit(struct mifintrbit *intr);
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/** Allocates TOHOST MIF interrupt bits, and associates handler for the AP bit.
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* Returns the bit index.*/
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int mifintrbit_alloc_tohost(struct mifintrbit *intr, mifintrbit_handler handler, void *data);
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/** Deallocates TOHOST MIF interrupt bits */
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int mifintrbit_free_tohost(struct mifintrbit *intr, int which_bit);
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/* Get an interrupt bit associated with the target (R4/M4) -FROMHOST direction
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* Function returns the IRQ bit associated , -EIO if error */
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int mifintrbit_alloc_fromhost(struct mifintrbit *intr, enum scsc_mif_abs_target target);
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/* Free an interrupt bit associated with the target (R4/M4) -FROMHOST direction
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* Function returns the 0 if succedes , -EIO if error */
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int mifintrbit_free_fromhost(struct mifintrbit *intr, int which_bit, enum scsc_mif_abs_target target);
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struct mifintrbit {
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void(*mifintrbit_irq_handler[MIFINTRBIT_NUM_INT]) (int irq, void *data);
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void *irq_data[MIFINTRBIT_NUM_INT];
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struct scsc_mif_abs *mif;
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/* Use spinlock is it may be in IRQ context */
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spinlock_t spinlock;
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/* Interrupt allocation bitmaps */
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DECLARE_BITMAP(bitmap_tohost, MIFINTRBIT_NUM_INT);
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DECLARE_BITMAP(bitmap_fromhost_r4, MIFINTRBIT_NUM_INT);
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DECLARE_BITMAP(bitmap_fromhost_m4, MIFINTRBIT_NUM_INT);
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#ifdef CONFIG_SCSC_MX450_GDB_SUPPORT
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DECLARE_BITMAP(bitmap_fromhost_m4_1, MIFINTRBIT_NUM_INT);
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#endif
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};
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#endif
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