From: Ralf Baechle Date: Thu, 14 Jul 2005 07:30:27 +0000 (+0000) Subject: Macros to access the register of processors using the new MIPS X-Git-Tag: v2.6.15-rc1~731^2~1^2~134 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=699dbc90e8c7baecae197fb331773f505a46a1eb;p=linux-2.6 Macros to access the register of processors using the new MIPS Multithreading ASE, also know as MT ASE. Signed-off-by: Ralf Baechle diff --git a/include/asm-mips/mipsmtregs.h b/include/asm-mips/mipsmtregs.h new file mode 100644 --- diff --git a/include/asm-mips/mipsmtregs.h b/include/asm-mips/mipsmtregs.h new file mode 100644 index 0000000000..9aaefc13a2 --- /dev/null +++ b/include/asm-mips/mipsmtregs.h @@ -0,0 +1,367 @@ +/* + * MT regs definitions, follows on from mipsregs.h + * Copyright (C) 2004 - 2005 MIPS Technologies, Inc. All rights reserved. + * Elizabeth Clarke et. al. + * + */ +#ifndef _ASM_MIPSMTREGS_H +#define _ASM_MIPSMTREGS_H + +#include + +#ifndef __ASSEMBLY__ + +/* + * C macros + */ + +#define read_c0_mvpcontrol() __read_32bit_c0_register($0, 1) +#define write_c0_mvpcontrol(val) __write_32bit_c0_register($0, 1, val) + +#define read_c0_mvpconf0() __read_32bit_c0_register($0, 2) +#define read_c0_mvpconf1() __read_32bit_c0_register($0, 3) + +#define read_c0_vpecontrol() __read_32bit_c0_register($1, 1) +#define write_c0_vpecontrol(val) __write_32bit_c0_register($1, 1, val) + +#define read_c0_vpeconf0() __read_32bit_c0_register($1, 2) +#define write_c0_vpeconf0(val) __write_32bit_c0_register($1, 2, val) + +#define read_c0_tcstatus() __read_32bit_c0_register($2, 1) +#define write_c0_tcstatus(val) __write_32bit_c0_register($2, 1, val) + +#define read_c0_tcbind() __read_32bit_c0_register($2, 2) + +#define read_c0_tccontext() __read_32bit_c0_register($2, 5) +#define write_c0_tccontext(val) __write_32bit_c0_register($2, 5, val) + +#else /* Assembly */ +/* + * Macros for use in assembly language code + */ + +#define CP0_MVPCONTROL $0,1 +#define CP0_MVPCONF0 $0,2 +#define CP0_MVPCONF1 $0,3 +#define CP0_VPECONTROL $1,1 +#define CP0_VPECONF0 $1,2 +#define CP0_VPECONF1 $1,3 +#define CP0_YQMASK $1,4 +#define CP0_VPESCHEDULE $1,5 +#define CP0_VPESCHEFBK $1,6 +#define CP0_TCSTATUS $2,1 +#define CP0_TCBIND $2,2 +#define CP0_TCRESTART $2,3 +#define CP0_TCHALT $2,4 +#define CP0_TCCONTEXT $2,5 +#define CP0_TCSCHEDULE $2,6 +#define CP0_TCSCHEFBK $2,7 +#define CP0_SRSCONF0 $6,1 +#define CP0_SRSCONF1 $6,2 +#define CP0_SRSCONF2 $6,3 +#define CP0_SRSCONF3 $6,4 +#define CP0_SRSCONF4 $6,5 + +#endif + +/* MVPControl fields */ +#define MVPCONTROL_EVP (_ULCAST_(1)) + +#define MVPCONTROL_VPC_SHIFT 1 +#define MVPCONTROL_VPC (_ULCAST_(1) << MVPCONTROL_VPC_SHIFT) + +#define MVPCONTROL_STLB_SHIFT 2 +#define MVPCONTROL_STLB (_ULCAST_(1) << MVPCONTROL_STLB_SHIFT) + + +/* MVPConf0 fields */ +#define MVPCONF0_PTC_SHIFT 0 +#define MVPCONF0_PTC ( _ULCAST_(0xff)) +#define MVPCONF0_PVPE_SHIFT 10 +#define MVPCONF0_PVPE ( _ULCAST_(0xf) << MVPCONF0_PVPE_SHIFT) +#define MVPCONF0_TCA_SHIFT 15 +#define MVPCONF0_TCA ( _ULCAST_(1) << MVPCONF0_TCA_SHIFT) +#define MVPCONF0_PTLBE_SHIFT 16 +#define MVPCONF0_PTLBE (_ULCAST_(0x3ff) << MVPCONF0_PTLBE_SHIFT) +#define MVPCONF0_TLBS_SHIFT 29 +#define MVPCONF0_TLBS (_ULCAST_(1) << MVPCONF0_TLBS_SHIFT) +#define MVPCONF0_M_SHIFT 31 +#define MVPCONF0_M (_ULCAST_(0x1) << MVPCONF0_M_SHIFT) + + +/* config3 fields */ +#define CONFIG3_MT_SHIFT 2 +#define CONFIG3_MT (_ULCAST_(1) << CONFIG3_MT_SHIFT) + + +/* VPEControl fields (per VPE) */ +#define VPECONTROL_TARGTC (_ULCAST_(0xff)) + +#define VPECONTROL_TE_SHIFT 15 +#define VPECONTROL_TE (_ULCAST_(1) << VPECONTROL_TE_SHIFT) +#define VPECONTROL_EXCPT_SHIFT 16 +#define VPECONTROL_EXCPT (_ULCAST_(0x7) << VPECONTROL_EXCPT_SHIFT) + +/* Thread Exception Codes for EXCPT field */ +#define THREX_TU 0 +#define THREX_TO 1 +#define THREX_IYQ 2 +#define THREX_GSX 3 +#define THREX_YSCH 4 +#define THREX_GSSCH 5 + +#define VPECONTROL_GSI_SHIFT 20 +#define VPECONTROL_GSI (_ULCAST_(1) << VPECONTROL_GSI_SHIFT) +#define VPECONTROL_YSI_SHIFT 21 +#define VPECONTROL_YSI (_ULCAST_(1) << VPECONTROL_YSI_SHIFT) + +/* VPEConf0 fields (per VPE) */ +#define VPECONF0_VPA_SHIFT 0 +#define VPECONF0_VPA (_ULCAST_(1) << VPECONF0_VPA_SHIFT) +#define VPECONF0_MVP_SHIFT 1 +#define VPECONF0_MVP (_ULCAST_(1) << VPECONF0_MVP_SHIFT) +#define VPECONF0_XTC_SHIFT 21 +#define VPECONF0_XTC (_ULCAST_(0xff) << VPECONF0_XTC_SHIFT) + +/* TCStatus fields (per TC) */ +#define TCSTATUS_TASID (_ULCAST_(0xff)) +#define TCSTATUS_IXMT_SHIFT 10 +#define TCSTATUS_IXMT (_ULCAST_(1) << TCSTATUS_IXMT_SHIFT) +#define TCSTATUS_TKSU_SHIFT 11 +#define TCSTATUS_TKSU (_ULCAST_(3) << TCSTATUS_TKSU_SHIFT) +#define TCSTATUS_A_SHIFT 13 +#define TCSTATUS_A (_ULCAST_(1) << TCSTATUS_A_SHIFT) +#define TCSTATUS_DA_SHIFT 15 +#define TCSTATUS_DA (_ULCAST_(1) << TCSTATUS_DA_SHIFT) +#define TCSTATUS_DT_SHIFT 20 +#define TCSTATUS_DT (_ULCAST_(1) << TCSTATUS_DT_SHIFT) +#define TCSTATUS_TDS_SHIFT 21 +#define TCSTATUS_TDS (_ULCAST_(1) << TCSTATUS_TDS_SHIFT) +#define TCSTATUS_TSST_SHIFT 22 +#define TCSTATUS_TSST (_ULCAST_(1) << TCSTATUS_TSST_SHIFT) +#define TCSTATUS_RNST_SHIFT 23 +#define TCSTATUS_RNST (_ULCAST_(3) << TCSTATUS_RNST_SHIFT) +/* Codes for RNST */ +#define TC_RUNNING 0 +#define TC_WAITING 1 +#define TC_YIELDING 2 +#define TC_GATED 3 + +#define TCSTATUS_TMX_SHIFT 27 +#define TCSTATUS_TMX (_ULCAST_(1) << TCSTATUS_TMX_SHIFT) +/* TCStatus TCU bits can use same definitions/offsets as CU bits in Status */ + +/* TCBind */ +#define TCBIND_CURVPE_SHIFT 0 +#define TCBIND_CURVPE (_ULCAST_(0xf)) + +#define TCBIND_CURTC_SHIFT 21 + +#define TCBIND_CURTC (_ULCAST_(0xff) << TCBIND_CURTC_SHIFT) + +/* TCHalt */ +#define TCHALT_H (_ULCAST_(1)) + +#ifndef __ASSEMBLY__ + +extern void mips_mt_regdump(void); + +static inline unsigned int dvpe(void) +{ + int res = 0; + + __asm__ __volatile__( + " .set push \n" + " .set noreorder \n" + " .set noat \n" + " .set mips32r2 \n" + " move $1, %0 \n" + " .word 0x41610001 # dvpe $1 \n" + " ehb \n" + " .set pop \n" + : "=r" (res)); + + instruction_hazard(); + + return res; +} + +static inline void __raw_evpe(void) +{ + __asm__ __volatile__( + " .set push \n" + " .set noreorder \n" + " .set noat \n" + " .set mips32r2 \n" + " .word 0x41600021 # evpe \n" + " ehb \n" + " .set pop \n"); +} + +/* Enable multiMT if previous suggested it should be. + EMT_ENABLE to force */ + +#define EVPE_ENABLE MVPCONTROL_EVP + +static inline void evpe(int previous) +{ + if ((previous & MVPCONTROL_EVP)) + __raw_evpe(); +} + +static inline unsigned int dmt(void) +{ + int res; + + __asm__ __volatile__( + " .set noreorder \n" + " .set mips32r2 \n" + " dmt %0 \n" + " ehb \n" + " .set mips0 \n" + " .set reorder \n" + : "=r" (res)); + + instruction_hazard(); + + return res; +} + +static inline void __raw_emt(void) +{ + __asm__ __volatile__( + " .set noreorder \n" + " .set mips32r2 \n" + " emt \n" + " ehb \n" + " .set mips0 \n" + " .set reorder"); +} + +/* enable multiVPE if previous suggested it should be. + EVPE_ENABLE to force */ + +#define EMT_ENABLE VPECONTROL_TE + +static inline void emt(int previous) +{ + if ((previous & EMT_ENABLE)) + __raw_emt(); +} + +static inline void ehb(void) +{ + __asm__ __volatile__("ehb"); +} + +#define mftc0(rt,sel) \ +({ \ + unsigned long __res; \ + \ + __asm__ __volatile__( \ + " .set noat\n\t" \ + " mftc0\t%0," #rt ", " #sel "\n\t" \ + " .set at\n\t" \ + : "=r" (__res)); \ + \ + __res; \ +}) + +#define mftgpr(rt) \ +({ \ + unsigned long __res; \ + \ + __asm__ __volatile__( \ + " .set noat \n" \ + " mftgpr %0," #rt " \n" \ + " .set at \n" \ + : "=r" (__res)); \ + \ + __res; \ +}) + +#define mftr(rt,u,sel) \ +({ \ + unsigned long __res; \ + \ + __asm__ __volatile__( \ + ".set noat\n\t" \ + "mftr\t%0, " #rt ", " #u ", " #sel "\n\t" \ + ".set at\n\t" \ + : "=r" (__res)); \ + \ + __res; \ +}) + +#define mttgpr(rd,v) \ +({ \ + __asm__ __volatile__( \ + "mttgpr %0," #rd \ + : : "r" (v)); \ +}) + +#define mttc0(rd,sel,v) \ +({ \ + __asm__ __volatile__( \ + "mttc0\t %0," #rd ", " #sel \ + : : "r" (v)); \ +}) + + +#define mttr(rd,u,sel,v) \ +({ \ + __asm__ __volatile__( \ + "mttr %0," #rd ", " #u ", " #sel \ + : : "r" (v)); \ +}) + + +#define settc(tc) \ +do { \ + write_c0_vpecontrol((read_c0_vpecontrol()&~VPECONTROL_TARGTC) | (tc)); \ + ehb(); \ +} while (0) + + +/* you *must* set the target tc (settc) before trying to use these */ +#define read_vpe_c0_vpecontrol() mftc0($1, 1) +#define write_vpe_c0_vpecontrol(val) mttc0($1, 1, val) +#define read_vpe_c0_vpeconf0() mftc0($1, 2) +#define write_vpe_c0_vpeconf0(val) mttc0($1, 2, val) +#define read_vpe_c0_status() mftc0($12, 0) +#define write_vpe_c0_status(val) mttc0($12, 0, val) +#define read_vpe_c0_cause() mftc0($13, 0) +#define write_vpe_c0_cause(val) mttc0($13, 0, val) +#define read_vpe_c0_config() mftc0($16, 0) +#define write_vpe_c0_config(val) mttc0($16, 0, val) +#define read_vpe_c0_config1() mftc0($16, 1) +#define write_vpe_c0_config1(val) mttc0($16, 1, val) +#define read_vpe_c0_config7() mftc0($16, 7) +#define write_vpe_c0_config7(val) mttc0($16, 7, val) +#define read_vpe_c0_ebase() mftc0($15,1) +#define write_vpe_c0_ebase(val) mttc0($15, 1, val) +#define write_vpe_c0_compare(val) mttc0($11, 0, val) + + +/* TC */ +#define read_tc_c0_tcstatus() mftc0($2, 1) +#define write_tc_c0_tcstatus(val) mttc0($2,1,val) +#define read_tc_c0_tcbind() mftc0($2, 2) +#define write_tc_c0_tcbind(val) mttc0($2,2,val) +#define read_tc_c0_tcrestart() mftc0($2, 3) +#define write_tc_c0_tcrestart(val) mttc0($2,3,val) +#define read_tc_c0_tchalt() mftc0($2, 4) +#define write_tc_c0_tchalt(val) mttc0($2,4,val) +#define read_tc_c0_tccontext() mftc0($2, 5) +#define write_tc_c0_tccontext(val) mttc0($2,5,val) + +/* GPR */ +#define read_tc_gpr_sp() mftgpr($29) +#define write_tc_gpr_sp(val) mttgpr($29, val) +#define read_tc_gpr_gp() mftgpr($28) +#define write_tc_gpr_gp(val) mttgpr($28, val) + + +#endif /* Not __ASSEMBLY__ */ + +#endif diff --git a/include/asm-mips/mipsregs.h b/include/asm-mips/mipsregs.h index 802b1c41ff..89aac1e1f3 100644 --- a/include/asm-mips/mipsregs.h +++ b/include/asm-mips/mipsregs.h @@ -37,6 +37,8 @@ #define _ULCAST_ (unsigned long) #endif +#include + /* * Coprocessor 0 register names */