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202 lines
4.9 KiB
C
Executable File
202 lines
4.9 KiB
C
Executable File
/**************************************************************************
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* *
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* Copyright (C) 1995, Silicon Graphics, Inc. *
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* *
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* These coded instructions, statements, and computer programs contain *
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* unpublished proprietary information of Silicon Graphics, Inc., and *
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* are protected by Federal copyright law. They may not be disclosed *
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* to third parties or copied or duplicated in any form, in whole or *
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* in part, without the prior written consent of Silicon Graphics, Inc. *
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* *
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**************************************************************************/
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/**************************************************************************
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*
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* $Revision: 1.9 $
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* $Date: 1998/03/05 06:40:29 $
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* $Source: /hosts/gate3/exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/sptask.h,v $
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*
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**************************************************************************/
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#ifndef _SPTASK_H_
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#define _SPTASK_H_
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#ifdef _LANGUAGE_C_PLUS_PLUS
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extern "C" {
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#endif
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#include <PR/ultratypes.h>
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#if defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS)
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/**************************************************************************
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*
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* Type definitions
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*
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*/
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/*
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* Task List Structure.
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*
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* Things an app might pass to the SP via the task list.
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* Not every task ucode would need/use every field, but
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*
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* - type (audio, gfx, video, ...)
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* - flags
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* - wait for DP to drain before running new task
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* - SEE BIT DEFINITIONS UNDER "Task Flags field"
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* - pointer to boot ucode
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* - size of boot ucode
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* - pointer to ucode
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* - size of ucode
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* - pointer to initial DMEM data
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* - size of initial DMEM data
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* - pointer to DRAM stack
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* - size of DRAM stack (max)
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* - pointer to output buffer
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* - pointer to store output buffer length
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* - generic data pointer (for display list, etc.)
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* - generic data length (for display list, etc.)
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* - pointer to buffer where to store saved DMEM (in yield case)
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* - size of buffer to store saved DMEM.
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*
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* IMPORTANT!!! Watch alignment issues.
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*
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* IMPORTANT!!! Watch data cache issues. The RCP may write data into the
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* dram_stack, output_buff, output_buff_size, and the yield_data_ptr areas.
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* These buffers should be cache aligned and use the entire line (16 bytes) to
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* avoid corruption by writebacks by the CPU (cache tearing).
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*
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* IMPORTANT!!! all addresses are virtual addresses. Library does
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* any necessary translation.
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*
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*/
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typedef struct {
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u32 type;
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u32 flags;
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u64 *ucode_boot;
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u32 ucode_boot_size;
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u64 *ucode;
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u32 ucode_size;
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u64 *ucode_data;
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u32 ucode_data_size;
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u64 *dram_stack;
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u32 dram_stack_size;
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u64 *output_buff;
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u64 *output_buff_size;
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u64 *data_ptr;
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u32 data_size;
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u64 *yield_data_ptr;
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u32 yield_data_size;
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} OSTask_t;
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typedef union {
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OSTask_t t;
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long long int force_structure_alignment;
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} OSTask;
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typedef u32 OSYieldResult;
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#endif /* _LANGUAGE_C */
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#ifdef _LANGUAGE_ASSEMBLY
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/*
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* For the RSP ucode:
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* offsets into the task structure
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*/
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#include <PR/sptaskoff.h>
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#endif
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/*
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* Task Flags field
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*/
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#define OS_TASK_YIELDED 0x0001
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#define OS_TASK_DP_WAIT 0x0002
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#define OS_TASK_LOADABLE 0x0004
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#define OS_TASK_SP_ONLY 0x0008
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#define OS_TASK_USR0 0x0010
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#define OS_TASK_USR1 0x0020
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#define OS_TASK_USR2 0x0040
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#define OS_TASK_USR3 0x0080
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/*
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* Size of Yield buffer. The taskHdrPtr->t.yield_data_ptr must point to a
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* buffer of this size. (The size is in bytes). ONLY If the task will NEVER
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* yield it may be a null pointer. The buffer must be aligned to a 64 bit
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* boundary. The taskHdrPtr->t.yield_data_ptr must be set to point to the
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* buffer BEFORE the task is started.
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*/
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#if (defined(F3DEX_GBI)||defined(F3DLP_GBI)||defined(F3DEX_GBI_2))
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#define OS_YIELD_DATA_SIZE 0xc00
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#else
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#define OS_YIELD_DATA_SIZE 0x900
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#endif
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#define OS_YIELD_AUDIO_SIZE 0x400
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/**************************************************************************
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*
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* Global definitions
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*
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*/
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#if defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS)
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/**************************************************************************
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*
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* Macro definitions
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*
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*/
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/*
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* this macro simulates atomic action.
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*/
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#define osSpTaskStart(tp) \
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{ \
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osSpTaskLoad((tp)); \
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osSpTaskStartGo((tp)); \
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}
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/**************************************************************************
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*
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* Extern variables
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*
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*/
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/**************************************************************************
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*
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* Function prototypes
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*
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*/
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/*
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* break this up into two steps for debugging.
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*/
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extern void osSpTaskLoad(OSTask *tp);
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extern void osSpTaskStartGo(OSTask *tp);
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extern void osSpTaskYield(void);
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extern OSYieldResult osSpTaskYielded(OSTask *tp);
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#endif /* _LANGUAGE_C */
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#ifdef _LANGUAGE_C_PLUS_PLUS
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}
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#endif
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#endif /* !_SPTASK_H */
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