/*- * Copyright (c) 2003-2009 RMI Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of RMI Corporation, nor the names of its contributors, * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * RMI_BSD */ #ifndef XLRCONFIG_H #define XLRCONFIG_H #include #include #include #define read_c0_register32(reg, sel) \ ({ unsigned int __rv; \ __asm__ __volatile__( \ ".set\tpush\n\t" \ ".set mips32\n\t" \ "mfc0\t%0,$%1,%2\n\t" \ ".set\tpop" \ : "=r" (__rv) : "i" (reg), "i" (sel) ); \ __rv;}) #define write_c0_register32(reg, sel, value) \ __asm__ __volatile__( \ ".set\tpush\n\t" \ ".set mips32\n\t" \ "mtc0\t%0,$%1,%2\n\t" \ ".set\tpop" \ : : "r" (value), "i" (reg), "i" (sel) ); #define read_c0_register64(reg, sel) \ ({ unsigned int __high, __low; \ __asm__ __volatile__( \ ".set\tpush\n\t" \ ".set mips64\n\t" \ "dmfc0\t $8, $%2, %3\n\t" \ "dsrl32\t%0, $8, 0\n\t" \ "dsll32\t$8, $8, 0\n\t" \ "dsrl32\t%1, $8, 0\n\t" \ ".set\tpop" \ : "=r"(__high), "=r"(__low): "i"(reg), "i"(sel): "$8" );\ (((unsigned long long)__high << 32) | __low);}) #define write_c0_register64(reg, sel, value) \ do{ \ unsigned int __high = val>>32; \ unsigned int __low = val & 0xffffffff; \ __asm__ __volatile__( \ ".set\tpush\n\t" \ ".set mips64\n\t" \ "dsll32\t$8, %1, 0\n\t" \ "dsll32\t$9, %0, 0\n\t" \ "or\t $8, $8, $9\n\t" \ "dmtc0\t $8, $%2, %3\n\t" \ ".set\tpop" \ :: "r"(high), "r"(low), "i"(reg), "i"(sel):"$8", "$9");\ } while(0) #define read_c2_register32(reg, sel) \ ({ unsigned int __rv; \ __asm__ __volatile__( \ ".set\tpush\n\t" \ ".set mips32\n\t" \ "mfc2\t%0,$%1,%2\n\t" \ ".set\tpop" \ : "=r" (__rv) : "i" (reg), "i" (sel) ); \ __rv;}) #define write_c2_register32(reg, sel, value) \ __asm__ __volatile__( \ ".set\tpush\n\t" \ ".set mips32\n\t" \ "mtc2\t%0,$%1,%2\n\t" \ ".set\tpop" \ : : "r" (value), "i" (reg), "i" (sel) ); #define read_c2_register64(reg, sel) \ ({ unsigned int __high, __low; \ __asm__ __volatile__( \ ".set mips64\n\t" \ "dmfc2\t $8, $%2, %3\n\t" \ "dsrl32\t%0, $8, 0\n\t" \ "dsll32\t$8, $8, 0\n\t" \ "dsrl32\t%1, $8, 0\n\t" \ ".set\tmips0" \ : "=r"(__high), "=r"(__low): "i"(reg), "i"(sel): "$8" );\ (((unsigned long long)__high << 32) | __low);}) #define write_c2_register64(reg, sel, value) \ do{ \ unsigned int __high = value>>32; \ unsigned int __low = value & 0xffffffff; \ __asm__ __volatile__( \ ".set mips64\n\t" \ "dsll32\t$8, %1, 0\n\t" \ "dsll32\t$9, %0, 0\n\t" \ "dsrl32\t$8, $8, 0\n\t" \ "or\t $8, $8, $9\n\t" \ "dmtc2\t $8, $%2, %3\n\t" \ ".set\tmips0" \ :: "r"(__high), "r"(__low), \ "i"(reg), "i"(sel) \ :"$8", "$9"); \ } while(0) #if 0 #define xlr_processor_id() \ ({int __id; \ __asm__ __volatile__ ( \ ".set push\n" \ ".set noreorder\n" \ ".word 0x40088007\n" \ "srl $8, $8, 10\n" \ "andi %0, $8, 0x3f\n" \ ".set pop\n" \ : "=r" (__id) : : "$8"); \ __id;}) #endif #define xlr_cpu_id() \ ({int __id; \ __asm__ __volatile__ ( \ ".set push\n" \ ".set noreorder\n" \ ".word 0x40088007\n" \ "srl $8, $8, 4\n" \ "andi %0, $8, 0x7\n" \ ".set pop\n" \ : "=r" (__id) : : "$8"); \ __id;}) #define xlr_thr_id() \ ({int __id; \ __asm__ __volatile__ ( \ ".set push\n" \ ".set noreorder\n" \ ".word 0x40088007\n" \ "andi %0, $8, 0x03\n" \ ".set pop\n" \ : "=r" (__id) : : "$8"); \ __id;}) /* Additional registers on the XLR */ #define MIPS_COP_0_OSSCRATCH 22 #define XLR_CACHELINE_SIZE 32 #define XLR_MAX_CORES 8 /* functions to write to and read from the extended * cp0 registers. * EIRR : Extended Interrupt Request Register * cp0 register 9 sel 6 * bits 0...7 are same as cause register 8...15 * EIMR : Extended Interrupt Mask Register * cp0 register 9 sel 7 * bits 0...7 are same as status register 8...15 */ static inline uint64_t read_c0_eirr64(void) { __uint32_t high, low; __asm__ __volatile__( ".set push\n" ".set noreorder\n" ".set noat\n" ".set mips4\n" ".word 0x40214806 \n\t" "nop \n\t" "dsra32 %0, $1, 0 \n\t" "sll %1, $1, 0 \n\t" ".set pop\n" : "=r"(high), "=r"(low) ); return (((__uint64_t) high) << 32) | low; } static inline __uint64_t read_c0_eimr64(void) { __uint32_t high, low; __asm__ __volatile__( ".set push\n" ".set noreorder\n" ".set noat\n" ".set mips4\n" ".word 0x40214807 \n\t" "nop \n\t" "dsra32 %0, $1, 0 \n\t" "sll %1, $1, 0 \n\t" ".set pop\n" : "=r"(high), "=r"(low) ); return (((__uint64_t) high) << 32) | low; } static inline void write_c0_eirr64(__uint64_t value) { __uint32_t low, high; high = value >> 32; low = value & 0xffffffff; __asm__ __volatile__( ".set push\n" ".set noreorder\n" ".set noat\n" ".set mips4\n\t" "dsll32 $2, %1, 0 \n\t" "dsll32 $1, %0, 0 \n\t" "dsrl32 $2, $2, 0 \n\t" "or $1, $1, $2 \n\t" ".word 0x40a14806 \n\t" "nop \n\t" ".set pop\n" : : "r"(high), "r"(low) : "$1", "$2"); } static inline void write_c0_eimr64(__uint64_t value) { __uint32_t low, high; high = value >> 32; low = value & 0xffffffff; __asm__ __volatile__( ".set push\n" ".set noreorder\n" ".set noat\n" ".set mips4\n\t" "dsll32 $2, %1, 0 \n\t" "dsll32 $1, %0, 0 \n\t" "dsrl32 $2, $2, 0 \n\t" "or $1, $1, $2 \n\t" ".word 0x40a14807 \n\t" "nop \n\t" ".set pop\n" : : "r"(high), "r"(low) : "$1", "$2"); } static __inline__ int xlr_test_and_set(int *lock) { int oldval = 0; __asm__ __volatile__(".set push\n" ".set noreorder\n" "move $9, %2\n" "li $8, 1\n" // "swapw $8, $9\n" ".word 0x71280014\n" "move %1, $8\n" ".set pop\n" : "+m"(*lock), "=r"(oldval) : "r"((unsigned long)lock) : "$8", "$9" ); return (oldval == 0 ? 1 /* success */ : 0 /* failure */ ); } static __inline__ uint32_t xlr_mfcr(uint32_t reg) { uint32_t val; __asm__ __volatile__( "move $8, %1\n" ".word 0x71090018\n" "move %0, $9\n" : "=r"(val) : "r"(reg):"$8", "$9"); return val; } static __inline__ void xlr_mtcr(uint32_t reg, uint32_t val) { __asm__ __volatile__( "move $8, %1\n" "move $9, %0\n" ".word 0x71090019\n" :: "r"(val), "r"(reg) : "$8", "$9"); } #endif