cregit-Linux how code gets into the kernel

Release 4.11 drivers/misc/sgi-gru/gru_instructions.h

/*
 *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 2.1 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#ifndef __GRU_INSTRUCTIONS_H__

#define __GRU_INSTRUCTIONS_H__

extern int gru_check_status_proc(void *cb);
extern int gru_wait_proc(void *cb);
extern void gru_wait_abort_proc(void *cb);



/*
 * Architecture dependent functions
 */

#if defined(CONFIG_IA64)
#include <linux/compiler.h>
#include <asm/intrinsics.h>

#define __flush_cache(p)		ia64_fc((unsigned long)p)
/* Use volatile on IA64 to ensure ordering via st4.rel */

#define gru_ordered_store_ulong(p, v)					\
		do {                                                    \
                        barrier();                                      \
                        *((volatile unsigned long *)(p)) = v; /* force st.rel */	\
                } while (0)
#elif defined(CONFIG_X86_64)
#include <asm/cacheflush.h>

#define __flush_cache(p)		clflush(p)

#define gru_ordered_store_ulong(p, v)					\
		do {                                                    \
                        barrier();                                      \
                        *(unsigned long *)p = v;                        \
                } while (0)
#else
#error "Unsupported architecture"
#endif

/*
 * Control block status and exception codes
 */

#define CBS_IDLE			0

#define CBS_EXCEPTION			1

#define CBS_ACTIVE			2

#define CBS_CALL_OS			3

/* CB substatus bitmasks */

#define CBSS_MSG_QUEUE_MASK		7

#define CBSS_IMPLICIT_ABORT_ACTIVE_MASK	8

/* CB substatus message queue values (low 3 bits of substatus) */

#define CBSS_NO_ERROR			0

#define CBSS_LB_OVERFLOWED		1

#define CBSS_QLIMIT_REACHED		2

#define CBSS_PAGE_OVERFLOW		3

#define CBSS_AMO_NACKED			4

#define CBSS_PUT_NACKED			5

/*
 * Structure used to fetch exception detail for CBs that terminate with
 * CBS_EXCEPTION
 */

struct control_block_extended_exc_detail {
	
unsigned long	cb;
	
int		opc;
	
int		ecause;
	
int		exopc;
	
long		exceptdet0;
	
int		exceptdet1;
	
int		cbrstate;
	
int		cbrexecstatus;
};

/*
 * Instruction formats
 */

/*
 * Generic instruction format.
 * This definition has precise bit field definitions.
 */

struct gru_instruction_bits {
    /* DW 0  - low */
    
unsigned int		icmd:      1;
    
unsigned char		ima:	   3;	/* CB_DelRep, unmapped mode */
    
unsigned char		reserved0: 4;
    
unsigned int		xtype:     3;
    
unsigned int		iaa0:      2;
    
unsigned int		iaa1:      2;
    
unsigned char		reserved1: 1;
    
unsigned char		opc:       8;	/* opcode */
    
unsigned char		exopc:     8;	/* extended opcode */
    /* DW 0  - high */
    
unsigned int		idef2:    22;	/* TRi0 */
    
unsigned char		reserved2: 2;
    
unsigned char		istatus:   2;
    
unsigned char		isubstatus:4;
    
unsigned char		reserved3: 1;
    
unsigned char		tlb_fault_color: 1;
    /* DW 1 */
    
unsigned long		idef4;		/* 42 bits: TRi1, BufSize */
    /* DW 2-6 */
    
unsigned long		idef1;		/* BAddr0 */
    
unsigned long		idef5;		/* Nelem */
    
unsigned long		idef6;		/* Stride, Operand1 */
    
unsigned long		idef3;		/* BAddr1, Value, Operand2 */
    
unsigned long		reserved4;
    /* DW 7 */
    
unsigned long		avalue;		 /* AValue */
};

/*
 * Generic instruction with friendlier names. This format is used
 * for inline instructions.
 */

struct gru_instruction {
    /* DW 0 */
    union {
    	
unsigned long		op64;    /* icmd,xtype,iaa0,ima,opc,tri0 */
	struct {
		
unsigned int	op32;
		
unsigned int	tri0;
	};
    };
    
unsigned long		tri1_bufsize;		/* DW 1 */
    
unsigned long		baddr0;			/* DW 2 */
    
unsigned long		nelem;			/* DW 3 */
    
unsigned long		op1_stride;		/* DW 4 */
    
unsigned long		op2_value_baddr1;	/* DW 5 */
    
unsigned long		reserved0;		/* DW 6 */
    
unsigned long		avalue;			/* DW 7 */
};

/* Some shifts and masks for the low 64 bits of a GRU command */

#define GRU_CB_ICMD_SHFT	0

#define GRU_CB_ICMD_MASK	0x1

#define GRU_CB_XTYPE_SHFT	8

#define GRU_CB_XTYPE_MASK	0x7

#define GRU_CB_IAA0_SHFT	11

#define GRU_CB_IAA0_MASK	0x3

#define GRU_CB_IAA1_SHFT	13

#define GRU_CB_IAA1_MASK	0x3

#define GRU_CB_IMA_SHFT		1

#define GRU_CB_IMA_MASK		0x3

#define GRU_CB_OPC_SHFT		16

#define GRU_CB_OPC_MASK		0xff

#define GRU_CB_EXOPC_SHFT	24

#define GRU_CB_EXOPC_MASK	0xff

#define GRU_IDEF2_SHFT		32

#define GRU_IDEF2_MASK		0x3ffff

#define GRU_ISTATUS_SHFT	56

#define GRU_ISTATUS_MASK	0x3

/* GRU instruction opcodes (opc field) */

#define OP_NOP		0x00

#define OP_BCOPY	0x01

#define OP_VLOAD	0x02

#define OP_IVLOAD	0x03

#define OP_VSTORE	0x04

#define OP_IVSTORE	0x05

#define OP_VSET		0x06

#define OP_IVSET	0x07

#define OP_MESQ		0x08

#define OP_GAMXR	0x09

#define OP_GAMIR	0x0a

#define OP_GAMIRR	0x0b

#define OP_GAMER	0x0c

#define OP_GAMERR	0x0d

#define OP_BSTORE	0x0e

#define OP_VFLUSH	0x0f


/* Extended opcodes values (exopc field) */

/* GAMIR - AMOs with implicit operands */

#define EOP_IR_FETCH	0x01 
/* Plain fetch of memory */

#define EOP_IR_CLR	0x02 
/* Fetch and clear */

#define EOP_IR_INC	0x05 
/* Fetch and increment */

#define EOP_IR_DEC	0x07 
/* Fetch and decrement */

#define EOP_IR_QCHK1	0x0d 
/* Queue check, 64 byte msg */

#define EOP_IR_QCHK2	0x0e 
/* Queue check, 128 byte msg */

/* GAMIRR - Registered AMOs with implicit operands */

#define EOP_IRR_FETCH	0x01 
/* Registered fetch of memory */

#define EOP_IRR_CLR	0x02 
/* Registered fetch and clear */

#define EOP_IRR_INC	0x05 
/* Registered fetch and increment */

#define EOP_IRR_DEC	0x07 
/* Registered fetch and decrement */

#define EOP_IRR_DECZ	0x0f 
/* Registered fetch and decrement, update on zero*/

/* GAMER - AMOs with explicit operands */

#define EOP_ER_SWAP	0x00 
/* Exchange argument and memory */

#define EOP_ER_OR	0x01 
/* Logical OR with memory */

#define EOP_ER_AND	0x02 
/* Logical AND with memory */

#define EOP_ER_XOR	0x03 
/* Logical XOR with memory */

#define EOP_ER_ADD	0x04 
/* Add value to memory */

#define EOP_ER_CSWAP	0x08 
/* Compare with operand2, write operand1 if match*/

#define EOP_ER_CADD	0x0c 
/* Queue check, operand1*64 byte msg */

/* GAMERR - Registered AMOs with explicit operands */

#define EOP_ERR_SWAP	0x00 
/* Exchange argument and memory */

#define EOP_ERR_OR	0x01 
/* Logical OR with memory */

#define EOP_ERR_AND	0x02 
/* Logical AND with memory */

#define EOP_ERR_XOR	0x03 
/* Logical XOR with memory */

#define EOP_ERR_ADD	0x04 
/* Add value to memory */

#define EOP_ERR_CSWAP	0x08 
/* Compare with operand2, write operand1 if match*/

#define EOP_ERR_EPOLL	0x09 
/* Poll for equality */

#define EOP_ERR_NPOLL	0x0a 
/* Poll for inequality */

/* GAMXR - SGI Arithmetic unit */

#define EOP_XR_CSWAP	0x0b 
/* Masked compare exchange */


/* Transfer types (xtype field) */

#define XTYPE_B		0x0	
/* byte */

#define XTYPE_S		0x1	
/* short (2-byte) */

#define XTYPE_W		0x2	
/* word (4-byte) */

#define XTYPE_DW	0x3	
/* doubleword (8-byte) */

#define XTYPE_CL	0x6	
/* cacheline (64-byte) */


/* Instruction access attributes (iaa0, iaa1 fields) */

#define IAA_RAM		0x0	
/* normal cached RAM access */

#define IAA_NCRAM	0x2	
/* noncoherent RAM access */

#define IAA_MMIO	0x1	
/* noncoherent memory-mapped I/O space */

#define IAA_REGISTER	0x3	
/* memory-mapped registers, etc. */


/* Instruction mode attributes (ima field) */

#define IMA_MAPPED	0x0	
/* Virtual mode  */

#define IMA_CB_DELAY	0x1	
/* hold read responses until status changes */

#define IMA_UNMAPPED	0x2	
/* bypass the TLBs (OS only) */

#define IMA_INTERRUPT	0x4	
/* Interrupt when instruction completes */

/* CBE ecause bits */

#define CBE_CAUSE_RI				(1 << 0)

#define CBE_CAUSE_INVALID_INSTRUCTION		(1 << 1)

#define CBE_CAUSE_UNMAPPED_MODE_FORBIDDEN	(1 << 2)

#define CBE_CAUSE_PE_CHECK_DATA_ERROR		(1 << 3)

#define CBE_CAUSE_IAA_GAA_MISMATCH		(1 << 4)

#define CBE_CAUSE_DATA_SEGMENT_LIMIT_EXCEPTION	(1 << 5)

#define CBE_CAUSE_OS_FATAL_TLB_FAULT		(1 << 6)

#define CBE_CAUSE_EXECUTION_HW_ERROR		(1 << 7)

#define CBE_CAUSE_TLBHW_ERROR			(1 << 8)

#define CBE_CAUSE_RA_REQUEST_TIMEOUT		(1 << 9)

#define CBE_CAUSE_HA_REQUEST_TIMEOUT		(1 << 10)

#define CBE_CAUSE_RA_RESPONSE_FATAL		(1 << 11)

#define CBE_CAUSE_RA_RESPONSE_NON_FATAL		(1 << 12)

#define CBE_CAUSE_HA_RESPONSE_FATAL		(1 << 13)

#define CBE_CAUSE_HA_RESPONSE_NON_FATAL		(1 << 14)

#define CBE_CAUSE_ADDRESS_SPACE_DECODE_ERROR	(1 << 15)

#define CBE_CAUSE_PROTOCOL_STATE_DATA_ERROR	(1 << 16)

#define CBE_CAUSE_RA_RESPONSE_DATA_ERROR	(1 << 17)

#define CBE_CAUSE_HA_RESPONSE_DATA_ERROR	(1 << 18)

#define CBE_CAUSE_FORCED_ERROR			(1 << 19)

/* CBE cbrexecstatus bits */

#define CBR_EXS_ABORT_OCC_BIT			0

#define CBR_EXS_INT_OCC_BIT			1

#define CBR_EXS_PENDING_BIT			2

#define CBR_EXS_QUEUED_BIT			3

#define CBR_EXS_TLB_INVAL_BIT			4

#define CBR_EXS_EXCEPTION_BIT			5

#define CBR_EXS_CB_INT_PENDING_BIT		6


#define CBR_EXS_ABORT_OCC			(1 << CBR_EXS_ABORT_OCC_BIT)

#define CBR_EXS_INT_OCC				(1 << CBR_EXS_INT_OCC_BIT)

#define CBR_EXS_PENDING				(1 << CBR_EXS_PENDING_BIT)

#define CBR_EXS_QUEUED				(1 << CBR_EXS_QUEUED_BIT)

#define CBR_EXS_TLB_INVAL			(1 << CBR_EXS_TLB_INVAL_BIT)

#define CBR_EXS_EXCEPTION			(1 << CBR_EXS_EXCEPTION_BIT)

#define CBR_EXS_CB_INT_PENDING			(1 << CBR_EXS_CB_INT_PENDING_BIT)

/*
 * Exceptions are retried for the following cases. If any OTHER bits are set
 * in ecause, the exception is not retryable.
 */

#define EXCEPTION_RETRY_BITS (CBE_CAUSE_EXECUTION_HW_ERROR |         \
                              CBE_CAUSE_TLBHW_ERROR |                   \
                              CBE_CAUSE_RA_REQUEST_TIMEOUT |            \
                              CBE_CAUSE_RA_RESPONSE_NON_FATAL |         \
                              CBE_CAUSE_HA_RESPONSE_NON_FATAL |         \
                              CBE_CAUSE_RA_RESPONSE_DATA_ERROR |        \
                              CBE_CAUSE_HA_RESPONSE_DATA_ERROR          \
                              )

/* Message queue head structure */

union gru_mesqhead {
	
unsigned long	val;
	struct {
		
unsigned int	head;
		
unsigned int	limit;
	};
};


/* Generate the low word of a GRU instruction */

static inline unsigned long __opdword(unsigned char opcode, unsigned char exopc, unsigned char xtype, unsigned char iaa0, unsigned char iaa1, unsigned long idef2, unsigned char ima) { return (1 << GRU_CB_ICMD_SHFT) | ((unsigned long)CBS_ACTIVE << GRU_ISTATUS_SHFT) | (idef2<< GRU_IDEF2_SHFT) | (iaa0 << GRU_CB_IAA0_SHFT) | (iaa1 << GRU_CB_IAA1_SHFT) | (ima << GRU_CB_IMA_SHFT) | (xtype << GRU_CB_XTYPE_SHFT) | (opcode << GRU_CB_OPC_SHFT) | (exopc << GRU_CB_EXOPC_SHFT); }

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/* * Architecture specific intrinsics */
static inline void gru_flush_cache(void *p) { __flush_cache(p); }

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/* * Store the lower 64 bits of the command including the "start" bit. Then * start the instruction executing. */
static inline void gru_start_instruction(struct gru_instruction *ins, unsigned long op64) { gru_ordered_store_ulong(ins, op64); mb(); gru_flush_cache(ins); }

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/* Convert "hints" to IMA */ #define CB_IMA(h) ((h) | IMA_UNMAPPED) /* Convert data segment cache line index into TRI0 / TRI1 value */ #define GRU_DINDEX(i) ((i) * GRU_CACHE_LINE_BYTES) /* Inline functions for GRU instructions. * Note: * - nelem and stride are in elements * - tri0/tri1 is in bytes for the beginning of the data segment. */
static inline void gru_vload_phys(void *cb, unsigned long gpa, unsigned int tri0, int iaa, unsigned long hints) { struct gru_instruction *ins = (struct gru_instruction *)cb; ins->baddr0 = (long)gpa | ((unsigned long)iaa << 62); ins->nelem = 1; ins->op1_stride = 1; gru_start_instruction(ins, __opdword(OP_VLOAD, 0, XTYPE_DW, iaa, 0, (unsigned long)tri0, CB_IMA(hints))); }

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static inline void gru_vstore_phys(void *cb, unsigned long gpa, unsigned int tri0, int iaa, unsigned long hints) { struct gru_instruction *ins = (struct gru_instruction *)cb; ins->baddr0 = (long)gpa | ((unsigned long)iaa << 62); ins->nelem = 1; ins->op1_stride = 1; gru_start_instruction(ins, __opdword(OP_VSTORE, 0, XTYPE_DW, iaa, 0, (unsigned long)tri0, CB_IMA(hints))); }

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static inline void gru_vload(void *cb, unsigned long mem_addr, unsigned int tri0, unsigned char xtype, unsigned long nelem, unsigned long stride, unsigned long hints) { struct gru_instruction *ins = (struct gru_instruction *)cb; ins->baddr0 = (long)mem_addr; ins->nelem = nelem; ins->op1_stride = stride; gru_start_instruction(ins, __opdword(OP_VLOAD, 0, xtype, IAA_RAM, 0, (unsigned long)tri0, CB_IMA(hints))); }

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static inline void gru_vstore(void *cb, unsigned long mem_addr, unsigned int tri0, unsigned char xtype, unsigned long nelem, unsigned long stride, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)mem_addr; ins->nelem = nelem; ins->op1_stride = stride; gru_start_instruction(ins, __opdword(OP_VSTORE, 0, xtype, IAA_RAM, 0, tri0, CB_IMA(hints))); }

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static inline void gru_ivload(void *cb, unsigned long mem_addr, unsigned int tri0, unsigned int tri1, unsigned char xtype, unsigned long nelem, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)mem_addr; ins->nelem = nelem; ins->tri1_bufsize = tri1; gru_start_instruction(ins, __opdword(OP_IVLOAD, 0, xtype, IAA_RAM, 0, tri0, CB_IMA(hints))); }

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static inline void gru_ivstore(void *cb, unsigned long mem_addr, unsigned int tri0, unsigned int tri1, unsigned char xtype, unsigned long nelem, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)mem_addr; ins->nelem = nelem; ins->tri1_bufsize = tri1; gru_start_instruction(ins, __opdword(OP_IVSTORE, 0, xtype, IAA_RAM, 0, tri0, CB_IMA(hints))); }

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static inline void gru_vset(void *cb, unsigned long mem_addr, unsigned long value, unsigned char xtype, unsigned long nelem, unsigned long stride, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)mem_addr; ins->op2_value_baddr1 = value; ins->nelem = nelem; ins->op1_stride = stride; gru_start_instruction(ins, __opdword(OP_VSET, 0, xtype, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_ivset(void *cb, unsigned long mem_addr, unsigned int tri1, unsigned long value, unsigned char xtype, unsigned long nelem, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)mem_addr; ins->op2_value_baddr1 = value; ins->nelem = nelem; ins->tri1_bufsize = tri1; gru_start_instruction(ins, __opdword(OP_IVSET, 0, xtype, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_vflush(void *cb, unsigned long mem_addr, unsigned long nelem, unsigned char xtype, unsigned long stride, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)mem_addr; ins->op1_stride = stride; ins->nelem = nelem; gru_start_instruction(ins, __opdword(OP_VFLUSH, 0, xtype, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_nop(void *cb, int hints) { struct gru_instruction *ins = (void *)cb; gru_start_instruction(ins, __opdword(OP_NOP, 0, 0, 0, 0, 0, CB_IMA(hints))); }

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static inline void gru_bcopy(void *cb, const unsigned long src, unsigned long dest, unsigned int tri0, unsigned int xtype, unsigned long nelem, unsigned int bufsize, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)src; ins->op2_value_baddr1 = (long)dest; ins->nelem = nelem; ins->tri1_bufsize = bufsize; gru_start_instruction(ins, __opdword(OP_BCOPY, 0, xtype, IAA_RAM, IAA_RAM, tri0, CB_IMA(hints))); }

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static inline void gru_bstore(void *cb, const unsigned long src, unsigned long dest, unsigned int tri0, unsigned int xtype, unsigned long nelem, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)src; ins->op2_value_baddr1 = (long)dest; ins->nelem = nelem; gru_start_instruction(ins, __opdword(OP_BSTORE, 0, xtype, 0, IAA_RAM, tri0, CB_IMA(hints))); }

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static inline void gru_gamir(void *cb, int exopc, unsigned long src, unsigned int xtype, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)src; gru_start_instruction(ins, __opdword(OP_GAMIR, exopc, xtype, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_gamirr(void *cb, int exopc, unsigned long src, unsigned int xtype, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)src; gru_start_instruction(ins, __opdword(OP_GAMIRR, exopc, xtype, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_gamer(void *cb, int exopc, unsigned long src, unsigned int xtype, unsigned long operand1, unsigned long operand2, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)src; ins->op1_stride = operand1; ins->op2_value_baddr1 = operand2; gru_start_instruction(ins, __opdword(OP_GAMER, exopc, xtype, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_gamerr(void *cb, int exopc, unsigned long src, unsigned int xtype, unsigned long operand1, unsigned long operand2, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)src; ins->op1_stride = operand1; ins->op2_value_baddr1 = operand2; gru_start_instruction(ins, __opdword(OP_GAMERR, exopc, xtype, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_gamxr(void *cb, unsigned long src, unsigned int tri0, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)src; ins->nelem = 4; gru_start_instruction(ins, __opdword(OP_GAMXR, EOP_XR_CSWAP, XTYPE_DW, IAA_RAM, 0, 0, CB_IMA(hints))); }

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static inline void gru_mesq(void *cb, unsigned long queue, unsigned long tri0, unsigned long nelem, unsigned long hints) { struct gru_instruction *ins = (void *)cb; ins->baddr0 = (long)queue; ins->nelem = nelem; gru_start_instruction(ins, __opdword(OP_MESQ, 0, XTYPE_CL, IAA_RAM, 0, tri0, CB_IMA(hints))); }

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static inline unsigned long gru_get_amo_value(void *cb) { struct gru_instruction *ins = (void *)cb; return ins->avalue; }

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static inline int gru_get_amo_value_head(void *cb) { struct gru_instruction *ins = (void *)cb; return ins->avalue & 0xffffffff; }

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Total29100.00%1100.00%


static inline int gru_get_amo_value_limit(void *cb) { struct gru_instruction *ins = (void *)cb; return ins->avalue >> 32; }

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Jack Steiner29100.00%1100.00%
Total29100.00%1100.00%


static inline union gru_mesqhead gru_mesq_head(int head, int limit) { union gru_mesqhead mqh; mqh.head = head; mqh.limit = limit; return mqh; }

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Jack Steiner33100.00%1100.00%
Total33100.00%1100.00%

/* * Get struct control_block_extended_exc_detail for CB. */ extern int gru_get_cb_exception_detail(void *cb, struct control_block_extended_exc_detail *excdet); #define GRU_EXC_STR_SIZE 256 /* * Control block definition for checking status */ struct gru_control_block_status { unsigned int icmd :1; unsigned int ima :3; unsigned int reserved0 :4; unsigned int unused1 :24; unsigned int unused2 :24; unsigned int istatus :2; unsigned int isubstatus :4; unsigned int unused3 :2; }; /* Get CB status */
static inline int gru_get_cb_status(void *cb) { struct gru_control_block_status *cbs = (void *)cb; return cbs->istatus; }

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Jack Steiner27100.00%1100.00%
Total27100.00%1100.00%

/* Get CB message queue substatus */
static inline int gru_get_cb_message_queue_substatus(void *cb) { struct gru_control_block_status *cbs = (void *)cb; return cbs->isubstatus & CBSS_MSG_QUEUE_MASK; }

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Jack Steiner29100.00%1100.00%
Total29100.00%1100.00%

/* Get CB substatus */
static inline int gru_get_cb_substatus(void *cb) { struct gru_control_block_status *cbs = (void *)cb; return cbs->isubstatus; }

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Jack Steiner27100.00%1100.00%
Total27100.00%1100.00%

/* * User interface to check an instruction status. UPM and exceptions * are handled automatically. However, this function does NOT wait * for an active instruction to complete. * */
static inline int gru_check_status(void *cb) { struct gru_control_block_status *cbs = (void *)cb; int ret; ret = cbs->istatus; if (ret != CBS_ACTIVE) ret = gru_check_status_proc(cb); return ret; }

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Jack Steiner47100.00%3100.00%
Total47100.00%3100.00%

/* * User interface (via inline function) to wait for an instruction * to complete. Completion status (IDLE or EXCEPTION is returned * to the user. Exception due to hardware errors are automatically * retried before returning an exception. * */
static inline int gru_wait(void *cb) { return gru_wait_proc(cb); }

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Jack Steiner17100.00%2100.00%
Total17100.00%2100.00%

/* * Wait for CB to complete. Aborts program if error. (Note: error does NOT * mean TLB mis - only fatal errors such as memory parity error or user * bugs will cause termination. */
static inline void gru_wait_abort(void *cb) { gru_wait_abort_proc(cb); }

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Jack Steiner16100.00%1100.00%
Total16100.00%1100.00%

/* * Get a pointer to the start of a gseg * p - Any valid pointer within the gseg */
static inline void *gru_get_gseg_pointer (void *p) { return (void *)((unsigned long)p & ~(GRU_GSEG_PAGESIZE - 1)); }

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Jack Steiner32100.00%1100.00%
Total32100.00%1100.00%

/* * Get a pointer to a control block * gseg - GSeg address returned from gru_get_thread_gru_segment() * index - index of desired CB */
static inline void *gru_get_cb_pointer(void *gseg, int index) { return gseg + GRU_CB_BASE + index * GRU_HANDLE_STRIDE; }

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Jack Steiner24100.00%1100.00%
Total24100.00%1100.00%

/* * Get a pointer to a cacheline in the data segment portion of a GSeg * gseg - GSeg address returned from gru_get_thread_gru_segment() * index - index of desired cache line */
static inline void *gru_get_data_pointer(void *gseg, int index) { return gseg + GRU_DS_BASE + index * GRU_CACHE_LINE_BYTES; }

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Jack Steiner24100.00%1100.00%
Total24100.00%1100.00%

/* * Convert a vaddr into the tri index within the GSEG * vaddr - virtual address of within gseg */
static inline int gru_get_tri(void *vaddr) { return ((unsigned long)vaddr & (GRU_GSEG_PAGESIZE - 1)) - GRU_DS_BASE; }

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Jack Steiner28100.00%1100.00%
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#endif /* __GRU_INSTRUCTIONS_H__ */

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Jack Steiner302296.98%1083.33%
Robin Holt912.92%18.33%
David Howells30.10%18.33%
Total3116100.00%12100.00%
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