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/* -*- pse-c -*-
*-----------------------------------------------------------------------------
* Filename: igd_interrupt.h
* $Revision: 1.3 $
*-----------------------------------------------------------------------------
* Copyright © 2002-2010, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*-----------------------------------------------------------------------------
* Description:
* The is the IGD exported interrupt access functions. It should be included
* by client drivers making use of interrupt functionality of IGD.
* This file Should NOT be included by any IGD modules because in some
* IGD environments the interrupt module will not be available.
*-----------------------------------------------------------------------------
*/
#ifndef _IGD_INTERRUPT_H
#define _IGD_INTERRUPT_H
#include <igd_mode.h>
typedef struct _oal_callbacks {
void (*spin_lock_irqsave)(void *lock);
void (*spin_unlock_irqrestore)(void *lock);
void (*spin_lock_isr)(void *lock);
void (*spin_unlock_isr)(void *lock);
void (*spin_lock)(void *lock);
void (*spin_unlock)(void *lock);
} oal_callbacks_t;
#define CB_FUNC(a, b, c) if(a && a->b) { a->b(c); }
/* Responses returned to the client from drm */
#define INT_INVALID -1
#define INT_NOOP 0
#define INT_CLEARED 1
#define INT_HANDLED 2
#define INT_READ 3
#define INT_STORED 4
#define INT_TIMEOUT 5
/* Response from the ISR helper to the ISR routine */
#define ISR_NEED_DPC 0
#define ISR_HANDLED 1
#define ISR_NOT_OURS 2
typedef struct _interrupt_data {
void *irqmask_lock;
unsigned char *msvdx_reg;
unsigned long sgx_irq_mask;
unsigned long sgx_irq_mask2;
unsigned long vdc_irq_mask;
unsigned long msvdx_irq_mask;
int irq_enabled;
/* condition to wake up on */
unsigned int event_present;
/* interrupts that have already occured */
unsigned int out_vdc;
unsigned int out_sgx;
unsigned int out_sgx2;
unsigned int out_mtx;
} interrupt_data_t;
/*----------------------------------------------------------------------
* Typedef: igd_interrupt_handler_t
*
* Description:
* This function type is used for OS independent interrupt handlers
* that will be called by the hal to handle a requested interrupt.
*
* Members:
*
*----------------------------------------------------------------------
*/
typedef void (igd_interrupt_handler_t)(unsigned long type,
void *call_data,
void *user_data);
/*----------------------------------------------------------------------
* Typedef: igd_interrupt_t
*
* Description:
* An opaque handle to identify an interrupt to be handled
*
* Members:
*
*----------------------------------------------------------------------
*/
typedef void * igd_interrupt_t;
#define IGD_INTERRUPT_VBLANK 0x1
#define IGD_INTERRUPT_SYNC 0x2
/*----------------------------------------------------------------------
* Function:
* isr_helper
*
* Description:
* This function helps the OAL/DRM module in doing all chipset specific
* functionality like register sets when an ISR is fired
* Parameters:
* void
* Returns:
* int - 0 on the interrupt was handled and we need to queue a DPC for it
* - 1 on the interrupt was handled but wasn't one to do further
* processing on
* - 2 on failure
*----------------------------------------------------------------------
*/
int isr_helper(void);
/*----------------------------------------------------------------------
* Function:
* unmask_int_helper
*
* Description:
* This function helps the OAL/DRM module in unmasking the Interrupt
* registers for a particular chipset so that the Interrupts can start
* firing
* Parameters:
* void
* Returns:
* int - 0 on SUCCESS
* - 1 on FAILURE
*----------------------------------------------------------------------
*/
int unmask_int_helper(void);
/*----------------------------------------------------------------------
* Function:
* mask_int_helper
*
* Description:
* This function helps the OAL/DRM module in masking the Interrupt
* registers for a particular chipset so that the Interrupts can stop
* firing
* Parameters:
* void
* Returns:
* int - 0 on SUCCESS
* - 1 on FAILURE
*----------------------------------------------------------------------
*/
int mask_int_helper(void);
/*----------------------------------------------------------------------
* Function:
* request_int_info_helper
*
* Description:
* This function helps the OAL module to request interrupt information
* and status
* Parameters:
* void *int_info_data
* Returns:
* int - 1 on Interrupt events supported and previous events occured
* - 0 on Interrupt events supported but no previous events occured
* - -1 on FAILURE or Interrupt events type not supported
*----------------------------------------------------------------------
*/
int request_int_info_helper(void *int_info_data);
/*----------------------------------------------------------------------
* Function:
* clear_occured_int_helper
*
* Description:
* This function helps the OAL module to request interrupt information
* and status
* Parameters:
* void *int_info_data
* Returns:
* void
*----------------------------------------------------------------------
*/
void clear_occured_int_helper(void *int_info_data);
/*----------------------------------------------------------------------
* Function:
* mask_int_helper
*
* Description:
* This function helps the OAL/DRM module in clearing the cached copy
* of Interrupt data
* Parameters:
* void
* Returns:
* void
*----------------------------------------------------------------------
*/
void clear_interrupt_cache(void);
/*----------------------------------------------------------------------
* Function:
* dpc_helper
*
* Description:
* This function helps the OAL/DRM module in doing all chipset specific
* functionality like register sets when an DPC is fired
* Parameters:
* interrupt_data_t **int_data
* Returns:
* int - 0 on SUCCESS
* - 1 on FAILURE
*----------------------------------------------------------------------
*/
int dpc_helper(interrupt_data_t **int_data);
/*----------------------------------------------------------------------
* Function:
* interrupt_init
*
* Description:
* This function initializees the interrupt helper module
* Parameters:
* unsigned short did - Device ID for main video device
* oal_callbacks_t *oal_callbacks_table - Callback for
* spin lock related functions
* Returns:
* int - 0 on SUCCESS
* - 1 on FAILURE
*----------------------------------------------------------------------
*/
int interrupt_init(unsigned short did,
oal_callbacks_t *oal_callbacks_table);
/*----------------------------------------------------------------------
* Function:
* pre_init_interrupt
*
* Description:
* This function helps the OAL/DRM module in doing all chipset specific
* functionality like register sets before an ISR is initialized
* Parameters:
* unsigned char *virt_mmadr - The MMIO base address
* Returns:
* void
*----------------------------------------------------------------------
*/
void pre_init_interrupt(unsigned char *virt_mmadr);
/*----------------------------------------------------------------------
* Function:
* post_init_interrupt
*
* Description:
* This function helps the OAL/DRM module in doing all chipset specific
* functionality like register sets after an ISR is initialized
* Parameters:
* unsigned char *virt_mmadr - The MMIO base address
* Returns:
* void
*----------------------------------------------------------------------
*/
void post_init_interrupt(unsigned char *virt_mmadr);
/*----------------------------------------------------------------------
* Function:
* uninstall_interrupt
*
* Description:
* This function helps the OAL/DRM module in doing all chipset specific
* functionality like register sets for removing Interrupt support
* Parameters:
* unsigned char *virt_mmadr - The MMIO base address
* Returns:
* void
*----------------------------------------------------------------------
*/
void uninstall_interrupt(void);
#endif
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