| /** |
| * @file me1400_ext_irq.h |
| * |
| * @brief ME-1400 external interrupt implementation. |
| * @note Copyright (C) 2006 Meilhaus Electronic GmbH (support@meilhaus.de) |
| * @author Guenter Gebhardt |
| */ |
| |
| #ifndef _ME1400_EXT_IRQ_H_ |
| #define _ME1400_EXT_IRQ_H_ |
| |
| #include <linux/sched.h> |
| |
| #include "mesubdevice.h" |
| #include "meslock.h" |
| |
| #ifdef __KERNEL__ |
| |
| /** |
| * @brief The ME-1400 external interrupt subdevice class. |
| */ |
| typedef struct me1400_ext_irq_subdevice { |
| /* Inheritance */ |
| me_subdevice_t base; /**< The subdevice base class. */ |
| |
| /* Attributes */ |
| spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */ |
| spinlock_t *clk_src_reg_lock; /**< Lock protecting the clock control register. */ |
| |
| wait_queue_head_t wait_queue; /**< Queue to put on threads waiting for an interrupt. */ |
| |
| uint32_t device_id; /**< The device id of the device holding the subdevice. */ |
| int irq; /**< The irq number assigned by PCI BIOS. */ |
| int rised; /**< If true an interrupt has occured. */ |
| unsigned int n; /**< The number of interrupt since the driver was loaded. */ |
| |
| unsigned long plx_intcs_reg; /**< The PLX interrupt control and status register. */ |
| unsigned long ctrl_reg; /**< The control register. */ |
| #ifdef MEDEBUG_DEBUG_REG |
| unsigned long reg_base; |
| #endif |
| } me1400_ext_irq_subdevice_t; |
| |
| /** |
| * @brief The constructor to generate a ME-1400 external interrupt instance. |
| * |
| * @param plx_reg_base The register base address of the PLX chip as returned by the PCI BIOS. |
| * @param me1400_reg_base The register base address of the ME-1400 device as returned by the PCI BIOS. |
| * @param irq The irq assigned by the PCI BIOS. |
| * |
| * @return Pointer to new instance on success.\n |
| * NULL on error. |
| */ |
| me1400_ext_irq_subdevice_t *me1400_ext_irq_constructor(uint32_t device_id, |
| uint32_t plx_reg_base, |
| uint32_t me1400_reg_base, |
| spinlock_t * |
| clk_src_reg_lock, |
| int irq); |
| |
| #endif |
| #endif |