737 lines
21 KiB
C
737 lines
21 KiB
C
/*
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* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __GRU_INSTRUCTIONS_H__
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#define __GRU_INSTRUCTIONS_H__
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extern int gru_check_status_proc(void *cb);
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extern int gru_wait_proc(void *cb);
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extern void gru_wait_abort_proc(void *cb);
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/*
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* Architecture dependent functions
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*/
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#if defined(CONFIG_IA64)
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#include <linux/compiler.h>
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#include <asm/intrinsics.h>
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#define __flush_cache(p) ia64_fc((unsigned long)p)
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/* Use volatile on IA64 to ensure ordering via st4.rel */
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#define gru_ordered_store_ulong(p, v) \
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do { \
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barrier(); \
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*((volatile unsigned long *)(p)) = v; /* force st.rel */ \
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} while (0)
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#elif defined(CONFIG_X86_64)
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#include <asm/cacheflush.h>
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#define __flush_cache(p) clflush(p)
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#define gru_ordered_store_ulong(p, v) \
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do { \
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barrier(); \
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*(unsigned long *)p = v; \
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} while (0)
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#else
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#error "Unsupported architecture"
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#endif
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/*
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* Control block status and exception codes
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*/
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#define CBS_IDLE 0
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#define CBS_EXCEPTION 1
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#define CBS_ACTIVE 2
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#define CBS_CALL_OS 3
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/* CB substatus bitmasks */
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#define CBSS_MSG_QUEUE_MASK 7
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#define CBSS_IMPLICIT_ABORT_ACTIVE_MASK 8
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/* CB substatus message queue values (low 3 bits of substatus) */
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#define CBSS_NO_ERROR 0
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#define CBSS_LB_OVERFLOWED 1
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#define CBSS_QLIMIT_REACHED 2
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#define CBSS_PAGE_OVERFLOW 3
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#define CBSS_AMO_NACKED 4
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#define CBSS_PUT_NACKED 5
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/*
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* Structure used to fetch exception detail for CBs that terminate with
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* CBS_EXCEPTION
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*/
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struct control_block_extended_exc_detail {
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unsigned long cb;
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int opc;
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int ecause;
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int exopc;
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long exceptdet0;
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int exceptdet1;
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int cbrstate;
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int cbrexecstatus;
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};
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/*
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* Instruction formats
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*/
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/*
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* Generic instruction format.
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* This definition has precise bit field definitions.
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*/
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struct gru_instruction_bits {
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/* DW 0 - low */
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unsigned int icmd: 1;
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unsigned char ima: 3; /* CB_DelRep, unmapped mode */
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unsigned char reserved0: 4;
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unsigned int xtype: 3;
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unsigned int iaa0: 2;
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unsigned int iaa1: 2;
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unsigned char reserved1: 1;
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unsigned char opc: 8; /* opcode */
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unsigned char exopc: 8; /* extended opcode */
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/* DW 0 - high */
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unsigned int idef2: 22; /* TRi0 */
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unsigned char reserved2: 2;
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unsigned char istatus: 2;
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unsigned char isubstatus:4;
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unsigned char reserved3: 1;
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unsigned char tlb_fault_color: 1;
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/* DW 1 */
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unsigned long idef4; /* 42 bits: TRi1, BufSize */
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/* DW 2-6 */
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unsigned long idef1; /* BAddr0 */
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unsigned long idef5; /* Nelem */
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unsigned long idef6; /* Stride, Operand1 */
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unsigned long idef3; /* BAddr1, Value, Operand2 */
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unsigned long reserved4;
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/* DW 7 */
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unsigned long avalue; /* AValue */
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};
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/*
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* Generic instruction with friendlier names. This format is used
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* for inline instructions.
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*/
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struct gru_instruction {
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/* DW 0 */
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union {
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unsigned long op64; /* icmd,xtype,iaa0,ima,opc,tri0 */
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struct {
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unsigned int op32;
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unsigned int tri0;
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};
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};
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unsigned long tri1_bufsize; /* DW 1 */
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unsigned long baddr0; /* DW 2 */
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unsigned long nelem; /* DW 3 */
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unsigned long op1_stride; /* DW 4 */
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unsigned long op2_value_baddr1; /* DW 5 */
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unsigned long reserved0; /* DW 6 */
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unsigned long avalue; /* DW 7 */
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};
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/* Some shifts and masks for the low 64 bits of a GRU command */
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#define GRU_CB_ICMD_SHFT 0
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#define GRU_CB_ICMD_MASK 0x1
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#define GRU_CB_XTYPE_SHFT 8
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#define GRU_CB_XTYPE_MASK 0x7
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#define GRU_CB_IAA0_SHFT 11
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#define GRU_CB_IAA0_MASK 0x3
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#define GRU_CB_IAA1_SHFT 13
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#define GRU_CB_IAA1_MASK 0x3
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#define GRU_CB_IMA_SHFT 1
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#define GRU_CB_IMA_MASK 0x3
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#define GRU_CB_OPC_SHFT 16
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#define GRU_CB_OPC_MASK 0xff
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#define GRU_CB_EXOPC_SHFT 24
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#define GRU_CB_EXOPC_MASK 0xff
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#define GRU_IDEF2_SHFT 32
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#define GRU_IDEF2_MASK 0x3ffff
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#define GRU_ISTATUS_SHFT 56
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#define GRU_ISTATUS_MASK 0x3
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/* GRU instruction opcodes (opc field) */
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#define OP_NOP 0x00
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#define OP_BCOPY 0x01
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#define OP_VLOAD 0x02
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#define OP_IVLOAD 0x03
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#define OP_VSTORE 0x04
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#define OP_IVSTORE 0x05
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#define OP_VSET 0x06
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#define OP_IVSET 0x07
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#define OP_MESQ 0x08
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#define OP_GAMXR 0x09
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#define OP_GAMIR 0x0a
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#define OP_GAMIRR 0x0b
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#define OP_GAMER 0x0c
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#define OP_GAMERR 0x0d
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#define OP_BSTORE 0x0e
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#define OP_VFLUSH 0x0f
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/* Extended opcodes values (exopc field) */
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/* GAMIR - AMOs with implicit operands */
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#define EOP_IR_FETCH 0x01 /* Plain fetch of memory */
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#define EOP_IR_CLR 0x02 /* Fetch and clear */
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#define EOP_IR_INC 0x05 /* Fetch and increment */
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#define EOP_IR_DEC 0x07 /* Fetch and decrement */
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#define EOP_IR_QCHK1 0x0d /* Queue check, 64 byte msg */
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#define EOP_IR_QCHK2 0x0e /* Queue check, 128 byte msg */
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/* GAMIRR - Registered AMOs with implicit operands */
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#define EOP_IRR_FETCH 0x01 /* Registered fetch of memory */
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#define EOP_IRR_CLR 0x02 /* Registered fetch and clear */
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#define EOP_IRR_INC 0x05 /* Registered fetch and increment */
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#define EOP_IRR_DEC 0x07 /* Registered fetch and decrement */
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#define EOP_IRR_DECZ 0x0f /* Registered fetch and decrement, update on zero*/
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/* GAMER - AMOs with explicit operands */
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#define EOP_ER_SWAP 0x00 /* Exchange argument and memory */
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#define EOP_ER_OR 0x01 /* Logical OR with memory */
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#define EOP_ER_AND 0x02 /* Logical AND with memory */
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#define EOP_ER_XOR 0x03 /* Logical XOR with memory */
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#define EOP_ER_ADD 0x04 /* Add value to memory */
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#define EOP_ER_CSWAP 0x08 /* Compare with operand2, write operand1 if match*/
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#define EOP_ER_CADD 0x0c /* Queue check, operand1*64 byte msg */
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/* GAMERR - Registered AMOs with explicit operands */
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#define EOP_ERR_SWAP 0x00 /* Exchange argument and memory */
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#define EOP_ERR_OR 0x01 /* Logical OR with memory */
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#define EOP_ERR_AND 0x02 /* Logical AND with memory */
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#define EOP_ERR_XOR 0x03 /* Logical XOR with memory */
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#define EOP_ERR_ADD 0x04 /* Add value to memory */
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#define EOP_ERR_CSWAP 0x08 /* Compare with operand2, write operand1 if match*/
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#define EOP_ERR_EPOLL 0x09 /* Poll for equality */
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#define EOP_ERR_NPOLL 0x0a /* Poll for inequality */
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/* GAMXR - SGI Arithmetic unit */
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#define EOP_XR_CSWAP 0x0b /* Masked compare exchange */
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/* Transfer types (xtype field) */
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#define XTYPE_B 0x0 /* byte */
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#define XTYPE_S 0x1 /* short (2-byte) */
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#define XTYPE_W 0x2 /* word (4-byte) */
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#define XTYPE_DW 0x3 /* doubleword (8-byte) */
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#define XTYPE_CL 0x6 /* cacheline (64-byte) */
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/* Instruction access attributes (iaa0, iaa1 fields) */
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#define IAA_RAM 0x0 /* normal cached RAM access */
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#define IAA_NCRAM 0x2 /* noncoherent RAM access */
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#define IAA_MMIO 0x1 /* noncoherent memory-mapped I/O space */
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#define IAA_REGISTER 0x3 /* memory-mapped registers, etc. */
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/* Instruction mode attributes (ima field) */
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#define IMA_MAPPED 0x0 /* Virtual mode */
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#define IMA_CB_DELAY 0x1 /* hold read responses until status changes */
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#define IMA_UNMAPPED 0x2 /* bypass the TLBs (OS only) */
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#define IMA_INTERRUPT 0x4 /* Interrupt when instruction completes */
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/* CBE ecause bits */
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#define CBE_CAUSE_RI (1 << 0)
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#define CBE_CAUSE_INVALID_INSTRUCTION (1 << 1)
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#define CBE_CAUSE_UNMAPPED_MODE_FORBIDDEN (1 << 2)
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#define CBE_CAUSE_PE_CHECK_DATA_ERROR (1 << 3)
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#define CBE_CAUSE_IAA_GAA_MISMATCH (1 << 4)
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#define CBE_CAUSE_DATA_SEGMENT_LIMIT_EXCEPTION (1 << 5)
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#define CBE_CAUSE_OS_FATAL_TLB_FAULT (1 << 6)
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#define CBE_CAUSE_EXECUTION_HW_ERROR (1 << 7)
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#define CBE_CAUSE_TLBHW_ERROR (1 << 8)
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#define CBE_CAUSE_RA_REQUEST_TIMEOUT (1 << 9)
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#define CBE_CAUSE_HA_REQUEST_TIMEOUT (1 << 10)
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#define CBE_CAUSE_RA_RESPONSE_FATAL (1 << 11)
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#define CBE_CAUSE_RA_RESPONSE_NON_FATAL (1 << 12)
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#define CBE_CAUSE_HA_RESPONSE_FATAL (1 << 13)
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#define CBE_CAUSE_HA_RESPONSE_NON_FATAL (1 << 14)
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#define CBE_CAUSE_ADDRESS_SPACE_DECODE_ERROR (1 << 15)
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#define CBE_CAUSE_PROTOCOL_STATE_DATA_ERROR (1 << 16)
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#define CBE_CAUSE_RA_RESPONSE_DATA_ERROR (1 << 17)
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#define CBE_CAUSE_HA_RESPONSE_DATA_ERROR (1 << 18)
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#define CBE_CAUSE_FORCED_ERROR (1 << 19)
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/* CBE cbrexecstatus bits */
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#define CBR_EXS_ABORT_OCC_BIT 0
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#define CBR_EXS_INT_OCC_BIT 1
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#define CBR_EXS_PENDING_BIT 2
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#define CBR_EXS_QUEUED_BIT 3
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#define CBR_EXS_TLB_INVAL_BIT 4
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#define CBR_EXS_EXCEPTION_BIT 5
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#define CBR_EXS_CB_INT_PENDING_BIT 6
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#define CBR_EXS_ABORT_OCC (1 << CBR_EXS_ABORT_OCC_BIT)
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#define CBR_EXS_INT_OCC (1 << CBR_EXS_INT_OCC_BIT)
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#define CBR_EXS_PENDING (1 << CBR_EXS_PENDING_BIT)
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#define CBR_EXS_QUEUED (1 << CBR_EXS_QUEUED_BIT)
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#define CBR_EXS_TLB_INVAL (1 << CBR_EXS_TLB_INVAL_BIT)
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#define CBR_EXS_EXCEPTION (1 << CBR_EXS_EXCEPTION_BIT)
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#define CBR_EXS_CB_INT_PENDING (1 << CBR_EXS_CB_INT_PENDING_BIT)
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/*
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* Exceptions are retried for the following cases. If any OTHER bits are set
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* in ecause, the exception is not retryable.
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*/
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#define EXCEPTION_RETRY_BITS (CBE_CAUSE_EXECUTION_HW_ERROR | \
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CBE_CAUSE_TLBHW_ERROR | \
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CBE_CAUSE_RA_REQUEST_TIMEOUT | \
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CBE_CAUSE_RA_RESPONSE_NON_FATAL | \
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CBE_CAUSE_HA_RESPONSE_NON_FATAL | \
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CBE_CAUSE_RA_RESPONSE_DATA_ERROR | \
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CBE_CAUSE_HA_RESPONSE_DATA_ERROR \
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)
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/* Message queue head structure */
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union gru_mesqhead {
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unsigned long val;
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struct {
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unsigned int head;
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unsigned int limit;
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};
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};
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/* Generate the low word of a GRU instruction */
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static inline unsigned long
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__opdword(unsigned char opcode, unsigned char exopc, unsigned char xtype,
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unsigned char iaa0, unsigned char iaa1,
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unsigned long idef2, unsigned char ima)
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{
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return (1 << GRU_CB_ICMD_SHFT) |
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((unsigned long)CBS_ACTIVE << GRU_ISTATUS_SHFT) |
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(idef2<< GRU_IDEF2_SHFT) |
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(iaa0 << GRU_CB_IAA0_SHFT) |
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(iaa1 << GRU_CB_IAA1_SHFT) |
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(ima << GRU_CB_IMA_SHFT) |
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(xtype << GRU_CB_XTYPE_SHFT) |
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(opcode << GRU_CB_OPC_SHFT) |
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(exopc << GRU_CB_EXOPC_SHFT);
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}
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/*
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* Architecture specific intrinsics
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*/
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static inline void gru_flush_cache(void *p)
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{
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__flush_cache(p);
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}
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/*
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* Store the lower 64 bits of the command including the "start" bit. Then
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* start the instruction executing.
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*/
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static inline void gru_start_instruction(struct gru_instruction *ins, unsigned long op64)
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{
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gru_ordered_store_ulong(ins, op64);
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mb();
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gru_flush_cache(ins);
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}
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/* Convert "hints" to IMA */
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#define CB_IMA(h) ((h) | IMA_UNMAPPED)
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/* Convert data segment cache line index into TRI0 / TRI1 value */
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#define GRU_DINDEX(i) ((i) * GRU_CACHE_LINE_BYTES)
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/* Inline functions for GRU instructions.
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* Note:
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* - nelem and stride are in elements
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* - tri0/tri1 is in bytes for the beginning of the data segment.
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*/
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static inline void gru_vload_phys(void *cb, unsigned long gpa,
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unsigned int tri0, int iaa, unsigned long hints)
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{
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struct gru_instruction *ins = (struct gru_instruction *)cb;
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ins->baddr0 = (long)gpa | ((unsigned long)iaa << 62);
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ins->nelem = 1;
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ins->op1_stride = 1;
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gru_start_instruction(ins, __opdword(OP_VLOAD, 0, XTYPE_DW, iaa, 0,
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(unsigned long)tri0, CB_IMA(hints)));
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}
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static inline void gru_vstore_phys(void *cb, unsigned long gpa,
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unsigned int tri0, int iaa, unsigned long hints)
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{
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struct gru_instruction *ins = (struct gru_instruction *)cb;
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ins->baddr0 = (long)gpa | ((unsigned long)iaa << 62);
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ins->nelem = 1;
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ins->op1_stride = 1;
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gru_start_instruction(ins, __opdword(OP_VSTORE, 0, XTYPE_DW, iaa, 0,
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(unsigned long)tri0, CB_IMA(hints)));
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}
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static inline void gru_vload(void *cb, unsigned long mem_addr,
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unsigned int tri0, unsigned char xtype, unsigned long nelem,
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unsigned long stride, unsigned long hints)
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{
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struct gru_instruction *ins = (struct gru_instruction *)cb;
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ins->baddr0 = (long)mem_addr;
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ins->nelem = nelem;
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ins->op1_stride = stride;
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gru_start_instruction(ins, __opdword(OP_VLOAD, 0, xtype, IAA_RAM, 0,
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(unsigned long)tri0, CB_IMA(hints)));
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}
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static inline void gru_vstore(void *cb, unsigned long mem_addr,
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unsigned int tri0, unsigned char xtype, unsigned long nelem,
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unsigned long stride, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)mem_addr;
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ins->nelem = nelem;
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ins->op1_stride = stride;
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gru_start_instruction(ins, __opdword(OP_VSTORE, 0, xtype, IAA_RAM, 0,
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tri0, CB_IMA(hints)));
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}
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static inline void gru_ivload(void *cb, unsigned long mem_addr,
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unsigned int tri0, unsigned int tri1, unsigned char xtype,
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unsigned long nelem, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)mem_addr;
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ins->nelem = nelem;
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ins->tri1_bufsize = tri1;
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gru_start_instruction(ins, __opdword(OP_IVLOAD, 0, xtype, IAA_RAM, 0,
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tri0, CB_IMA(hints)));
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}
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static inline void gru_ivstore(void *cb, unsigned long mem_addr,
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unsigned int tri0, unsigned int tri1,
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unsigned char xtype, unsigned long nelem, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)mem_addr;
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ins->nelem = nelem;
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ins->tri1_bufsize = tri1;
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gru_start_instruction(ins, __opdword(OP_IVSTORE, 0, xtype, IAA_RAM, 0,
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tri0, CB_IMA(hints)));
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}
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static inline void gru_vset(void *cb, unsigned long mem_addr,
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unsigned long value, unsigned char xtype, unsigned long nelem,
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unsigned long stride, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)mem_addr;
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ins->op2_value_baddr1 = value;
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ins->nelem = nelem;
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ins->op1_stride = stride;
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gru_start_instruction(ins, __opdword(OP_VSET, 0, xtype, IAA_RAM, 0,
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0, CB_IMA(hints)));
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}
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static inline void gru_ivset(void *cb, unsigned long mem_addr,
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unsigned int tri1, unsigned long value, unsigned char xtype,
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unsigned long nelem, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)mem_addr;
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ins->op2_value_baddr1 = value;
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ins->nelem = nelem;
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ins->tri1_bufsize = tri1;
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gru_start_instruction(ins, __opdword(OP_IVSET, 0, xtype, IAA_RAM, 0,
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0, CB_IMA(hints)));
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}
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static inline void gru_vflush(void *cb, unsigned long mem_addr,
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unsigned long nelem, unsigned char xtype, unsigned long stride,
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unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)mem_addr;
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ins->op1_stride = stride;
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ins->nelem = nelem;
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gru_start_instruction(ins, __opdword(OP_VFLUSH, 0, xtype, IAA_RAM, 0,
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0, CB_IMA(hints)));
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}
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static inline void gru_nop(void *cb, int hints)
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{
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struct gru_instruction *ins = (void *)cb;
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gru_start_instruction(ins, __opdword(OP_NOP, 0, 0, 0, 0, 0, CB_IMA(hints)));
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}
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static inline void gru_bcopy(void *cb, const unsigned long src,
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unsigned long dest,
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unsigned int tri0, unsigned int xtype, unsigned long nelem,
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unsigned int bufsize, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)src;
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ins->op2_value_baddr1 = (long)dest;
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ins->nelem = nelem;
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ins->tri1_bufsize = bufsize;
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gru_start_instruction(ins, __opdword(OP_BCOPY, 0, xtype, IAA_RAM,
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IAA_RAM, tri0, CB_IMA(hints)));
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}
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static inline void gru_bstore(void *cb, const unsigned long src,
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unsigned long dest, unsigned int tri0, unsigned int xtype,
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unsigned long nelem, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)src;
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ins->op2_value_baddr1 = (long)dest;
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ins->nelem = nelem;
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gru_start_instruction(ins, __opdword(OP_BSTORE, 0, xtype, 0, IAA_RAM,
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tri0, CB_IMA(hints)));
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}
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static inline void gru_gamir(void *cb, int exopc, unsigned long src,
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unsigned int xtype, unsigned long hints)
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{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)src;
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gru_start_instruction(ins, __opdword(OP_GAMIR, exopc, xtype, IAA_RAM, 0,
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0, CB_IMA(hints)));
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}
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static inline void gru_gamirr(void *cb, int exopc, unsigned long src,
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unsigned int xtype, unsigned long hints)
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|
{
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struct gru_instruction *ins = (void *)cb;
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ins->baddr0 = (long)src;
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gru_start_instruction(ins, __opdword(OP_GAMIRR, exopc, xtype, IAA_RAM, 0,
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0, CB_IMA(hints)));
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}
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static inline void gru_gamer(void *cb, int exopc, unsigned long src,
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unsigned int xtype,
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unsigned long operand1, unsigned long operand2,
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|
unsigned long hints)
|
|
{
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struct gru_instruction *ins = (void *)cb;
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|
|
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ins->baddr0 = (long)src;
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ins->op1_stride = operand1;
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ins->op2_value_baddr1 = operand2;
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gru_start_instruction(ins, __opdword(OP_GAMER, exopc, xtype, IAA_RAM, 0,
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0, CB_IMA(hints)));
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}
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|
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static inline void gru_gamerr(void *cb, int exopc, unsigned long src,
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|
unsigned int xtype, unsigned long operand1,
|
|
unsigned long operand2, unsigned long hints)
|
|
{
|
|
struct gru_instruction *ins = (void *)cb;
|
|
|
|
ins->baddr0 = (long)src;
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ins->op1_stride = operand1;
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|
ins->op2_value_baddr1 = operand2;
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gru_start_instruction(ins, __opdword(OP_GAMERR, exopc, xtype, IAA_RAM, 0,
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|
0, CB_IMA(hints)));
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|
}
|
|
|
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static inline void gru_gamxr(void *cb, unsigned long src,
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|
unsigned int tri0, unsigned long hints)
|
|
{
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|
struct gru_instruction *ins = (void *)cb;
|
|
|
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ins->baddr0 = (long)src;
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|
ins->nelem = 4;
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|
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,
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|
unsigned long tri0, unsigned long nelem,
|
|
unsigned long hints)
|
|
{
|
|
struct gru_instruction *ins = (void *)cb;
|
|
|
|
ins->baddr0 = (long)queue;
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|
ins->nelem = nelem;
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|
gru_start_instruction(ins, __opdword(OP_MESQ, 0, XTYPE_CL, IAA_RAM, 0,
|
|
tri0, CB_IMA(hints)));
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|
}
|
|
|
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static inline unsigned long gru_get_amo_value(void *cb)
|
|
{
|
|
struct gru_instruction *ins = (void *)cb;
|
|
|
|
return ins->avalue;
|
|
}
|
|
|
|
static inline int gru_get_amo_value_head(void *cb)
|
|
{
|
|
struct gru_instruction *ins = (void *)cb;
|
|
|
|
return ins->avalue & 0xffffffff;
|
|
}
|
|
|
|
static inline int gru_get_amo_value_limit(void *cb)
|
|
{
|
|
struct gru_instruction *ins = (void *)cb;
|
|
|
|
return ins->avalue >> 32;
|
|
}
|
|
|
|
static inline union gru_mesqhead gru_mesq_head(int head, int limit)
|
|
{
|
|
union gru_mesqhead mqh;
|
|
|
|
mqh.head = head;
|
|
mqh.limit = limit;
|
|
return mqh;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* Get CB substatus */
|
|
static inline int gru_get_cb_substatus(void *cb)
|
|
{
|
|
struct gru_control_block_status *cbs = (void *)cb;
|
|
|
|
return cbs->isubstatus;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
/*
|
|
* 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));
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
#endif /* __GRU_INSTRUCTIONS_H__ */
|