David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file me1400_ext_irq.h |
| 3 | * |
| 4 | * @brief ME-1400 external interrupt implementation. |
| 5 | * @note Copyright (C) 2006 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 6 | * @author Guenter Gebhardt |
| 7 | */ |
| 8 | |
| 9 | #ifndef _ME1400_EXT_IRQ_H_ |
| 10 | #define _ME1400_EXT_IRQ_H_ |
| 11 | |
| 12 | #include <linux/sched.h> |
| 13 | |
| 14 | #include "mesubdevice.h" |
| 15 | #include "meslock.h" |
| 16 | |
| 17 | #ifdef __KERNEL__ |
| 18 | |
| 19 | /** |
| 20 | * @brief The ME-1400 external interrupt subdevice class. |
| 21 | */ |
| 22 | typedef struct me1400_ext_irq_subdevice { |
| 23 | /* Inheritance */ |
| 24 | me_subdevice_t base; /**< The subdevice base class. */ |
| 25 | |
| 26 | /* Attributes */ |
| 27 | spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */ |
| 28 | spinlock_t *clk_src_reg_lock; /**< Lock protecting the clock control register. */ |
| 29 | |
| 30 | wait_queue_head_t wait_queue; /**< Queue to put on threads waiting for an interrupt. */ |
| 31 | |
| 32 | uint32_t device_id; /**< The device id of the device holding the subdevice. */ |
| 33 | int irq; /**< The irq number assigned by PCI BIOS. */ |
| 34 | int rised; /**< If true an interrupt has occured. */ |
| 35 | unsigned int n; /**< The number of interrupt since the driver was loaded. */ |
| 36 | |
| 37 | unsigned long plx_intcs_reg; /**< The PLX interrupt control and status register. */ |
| 38 | unsigned long ctrl_reg; /**< The control register. */ |
| 39 | #ifdef MEDEBUG_DEBUG_REG |
| 40 | unsigned long reg_base; |
| 41 | #endif |
| 42 | } me1400_ext_irq_subdevice_t; |
| 43 | |
| 44 | /** |
| 45 | * @brief The constructor to generate a ME-1400 external interrupt instance. |
| 46 | * |
| 47 | * @param plx_reg_base The register base address of the PLX chip as returned by the PCI BIOS. |
| 48 | * @param me1400_reg_base The register base address of the ME-1400 device as returned by the PCI BIOS. |
| 49 | * @param irq The irq assigned by the PCI BIOS. |
| 50 | * |
| 51 | * @return Pointer to new instance on success.\n |
| 52 | * NULL on error. |
| 53 | */ |
| 54 | me1400_ext_irq_subdevice_t *me1400_ext_irq_constructor(uint32_t device_id, |
| 55 | uint32_t plx_reg_base, |
| 56 | uint32_t me1400_reg_base, |
| 57 | spinlock_t * |
| 58 | clk_src_reg_lock, |
| 59 | int irq); |
| 60 | |
| 61 | #endif |
| 62 | #endif |