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freebsd-skq/cvmx-interrupt.h

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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Interface to the Mips interrupts.
*
* <hr>$Revision: 70030 $<hr>
*/
#ifndef __CVMX_INTERRUPT_H__
#define __CVMX_INTERRUPT_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* Enumeration of Interrupt numbers
*/
typedef enum
{
/* 0 - 7 represent the 8 MIPS standard interrupt sources */
CVMX_IRQ_SW0 = 0,
CVMX_IRQ_SW1,
CVMX_IRQ_MIPS2,
CVMX_IRQ_MIPS3,
CVMX_IRQ_MIPS4,
CVMX_IRQ_MIPS5,
CVMX_IRQ_MIPS6,
CVMX_IRQ_MIPS7,
/* 64 WORKQ interrupts. */
CVMX_IRQ_WORKQ0,
/* 16 GPIO interrupts. */
CVMX_IRQ_GPIO0 = CVMX_IRQ_WORKQ0 + 64,
/* 4 MBOX interrupts. */
CVMX_IRQ_MBOX0 = CVMX_IRQ_GPIO0 + 16,
/* 3 UART interrupts. */
CVMX_IRQ_UART0 = CVMX_IRQ_MBOX0 + 4,
CVMX_IRQ_PCI_INT0 = CVMX_IRQ_UART0 + 3,
CVMX_IRQ_PCI_INT1,
CVMX_IRQ_PCI_INT2,
CVMX_IRQ_PCI_INT3,
CVMX_IRQ_PCI_MSI0,
CVMX_IRQ_PCI_MSI1,
CVMX_IRQ_PCI_MSI2,
CVMX_IRQ_PCI_MSI3,
/* 2 TWSI interrupts */
CVMX_IRQ_TWSI0,
CVMX_IRQ_RML = CVMX_IRQ_TWSI0 + 2,
/* 4 TRACE interrupts added in CN68XX */
CVMX_IRQ_TRACE0,
/* 5 GMX_DRP interrupts added in CN68XX */
CVMX_IRQ_GMX_DRP0 = CVMX_IRQ_TRACE0 + 4,
CVMX_IRQ_GMX_DRP1, /* Doesn't apply on CN52XX or CN63XX */
CVMX_IRQ_IPD_DRP = CVMX_IRQ_GMX_DRP0 + 5,
CVMX_IRQ_KEY_ZERO, /* Doesn't apply on CN52XX or CN63XX */
/* 4 TIMER interrupts. */
CVMX_IRQ_TIMER0,
/* 2 USB interrupts. */
CVMX_IRQ_USB0 = CVMX_IRQ_TIMER0 + 4, /* Doesn't apply on CN38XX or CN58XX */
CVMX_IRQ_PCM = CVMX_IRQ_USB0 + 2, /* Doesn't apply on CN52XX or CN63XX */
CVMX_IRQ_MPI, /* Doesn't apply on CN52XX or CN63XX */
CVMX_IRQ_POWIQ, /* Added in CN56XX */
CVMX_IRQ_IPDPPTHR, /* Added in CN56XX */
/* 2 MII interrupts. */
CVMX_IRQ_MII0, /* Added in CN56XX */
CVMX_IRQ_BOOTDMA = CVMX_IRQ_MII0 + 2, /* Added in CN56XX */
/* 32 WDOG interrupts. */
CVMX_IRQ_WDOG0,
CVMX_IRQ_NAND = CVMX_IRQ_WDOG0 + 32, /* Added in CN52XX */
CVMX_IRQ_MIO, /* Added in CN63XX */
CVMX_IRQ_IOB, /* Added in CN63XX */
CVMX_IRQ_FPA, /* Added in CN63XX */
CVMX_IRQ_POW, /* Added in CN63XX */
CVMX_IRQ_L2C, /* Added in CN63XX */
CVMX_IRQ_IPD, /* Added in CN63XX */
CVMX_IRQ_PIP, /* Added in CN63XX */
CVMX_IRQ_PKO, /* Added in CN63XX */
CVMX_IRQ_ZIP, /* Added in CN63XX */
CVMX_IRQ_TIM, /* Added in CN63XX */
CVMX_IRQ_RAD, /* Added in CN63XX */
CVMX_IRQ_KEY, /* Added in CN63XX */
CVMX_IRQ_DFA, /* Added in CN63XX */
CVMX_IRQ_USBCTL, /* Added in CN63XX */
CVMX_IRQ_SLI, /* Added in CN63XX */
CVMX_IRQ_DPI, /* Added in CN63XX */
/* 5 AGX interrupts added in CN68XX. */
CVMX_IRQ_AGX0, /* Added in CN63XX */
CVMX_IRQ_AGL = CVMX_IRQ_AGX0 + 5, /* Added in CN63XX */
CVMX_IRQ_PTP, /* Added in CN63XX */
CVMX_IRQ_PEM0, /* Added in CN63XX */
CVMX_IRQ_PEM1, /* Added in CN63XX */
CVMX_IRQ_SRIO0, /* Added in CN63XX */
CVMX_IRQ_SRIO1, /* Added in CN63XX */
CVMX_IRQ_LMC0, /* Added in CN63XX */
/* 4 LMC interrupts added in CN68XX. */
CVMX_IRQ_DFM = CVMX_IRQ_LMC0 + 4, /* Added in CN63XX */
CVMX_IRQ_RST, /* Added in CN63XX */
CVMX_IRQ_ILK, /* Added for CN68XX */
CVMX_IRQ_SRIO2, /* Added in CN66XX */
CVMX_IRQ_DPI_DMA, /* Added in CN61XX */
/* 6 addition timers added in CN61XX */
CVMX_IRQ_TIMER4, /* Added in CN61XX */
CVMX_IRQ_MAX = CVMX_IRQ_TIMER4 + 6 /* One greater than the last valid number.*/
} cvmx_irq_t;
/**
* Function prototype for the exception handler
*/
typedef void (*cvmx_interrupt_exception_t)(uint64_t *registers);
/**
* Function prototype for interrupt handlers
*/
typedef void (*cvmx_interrupt_func_t)(int irq_number, uint64_t *registers, void *user_arg);
/**
* Register an interrupt handler for the specified interrupt number.
*
* @param irq_number Interrupt number to register for (0-135)
* @param func Function to call on interrupt.
* @param user_arg User data to pass to the interrupt handler
*/
void cvmx_interrupt_register(int irq_number, cvmx_interrupt_func_t func, void *user_arg);
/**
* Set the exception handler for all non interrupt sources.
*
* @param handler New exception handler
* @return Old exception handler
*/
cvmx_interrupt_exception_t cvmx_interrupt_set_exception(cvmx_interrupt_exception_t handler);
/**
* Masks a given interrupt number.
*
* @param irq_number interrupt number to mask
*/
extern void (*cvmx_interrupt_mask_irq)(int irq_number);
/**
* Unmasks a given interrupt number
*
* @param irq_number interrupt number to unmask
*/
extern void (*cvmx_interrupt_unmask_irq)(int irq_number);
/* Disable interrupts by clearing bit 0 of the COP0 status register,
** and return the previous contents of the status register.
** Note: this is only used to track interrupt status. */
static inline uint32_t cvmx_interrupt_disable_save(void)
{
uint32_t flags;
asm volatile (
"DI %[flags]\n"
: [flags]"=r" (flags));
return(flags);
}
/* Restore the contents of the cop0 status register. Used with
** cvmx_interrupt_disable_save to allow recursive interrupt disabling */
static inline void cvmx_interrupt_restore(uint32_t flags)
{
/* If flags value indicates interrupts should be enabled, then enable them */
if (flags & 1)
{
asm volatile (
"EI \n"
::);
}
}
#define cvmx_local_irq_save(x) ({x = cvmx_interrupt_disable_save();})
#define cvmx_local_irq_restore(x) cvmx_interrupt_restore(x)
/**
* Utility function to do interrupt safe printf
*/
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#define cvmx_safe_printf printk
#elif defined(CVMX_BUILD_FOR_LINUX_USER)
#define cvmx_safe_printf printf
#else
extern void cvmx_safe_printf(const char* format, ... ) __attribute__ ((format(printf, 1, 2)));
#endif
#define PRINT_ERROR(format, ...) cvmx_safe_printf("ERROR " format, ##__VA_ARGS__)
#ifdef __cplusplus
}
#endif
#endif
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