1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * MIPS Coherence Manager (CM) Register Definitions 4 * 5 * Copyright (c) 2016 Imagination Technologies Ltd. 6 */ 7 #ifndef __MIPS_ASM_CM_H__ 8 #define __MIPS_ASM_CM_H__ 9 10 /* Global Control Register (GCR) offsets */ 11 #define GCR_BASE 0x0008 12 #define GCR_BASE_UPPER 0x000c 13 #define GCR_REV 0x0030 14 #define GCR_L2_CONFIG 0x0130 15 #define GCR_L2_TAG_ADDR 0x0600 16 #define GCR_L2_TAG_ADDR_UPPER 0x0604 17 #define GCR_L2_TAG_STATE 0x0608 18 #define GCR_L2_TAG_STATE_UPPER 0x060c 19 #define GCR_L2_DATA 0x0610 20 #define GCR_L2_DATA_UPPER 0x0614 21 #define GCR_Cx_COHERENCE 0x2008 22 23 /* GCR_REV CM versions */ 24 #define GCR_REV_CM3 0x0800 25 26 /* GCR_L2_CONFIG fields */ 27 #define GCR_L2_CONFIG_ASSOC_SHIFT 0 28 #define GCR_L2_CONFIG_ASSOC_BITS 8 29 #define GCR_L2_CONFIG_LINESZ_SHIFT 8 30 #define GCR_L2_CONFIG_LINESZ_BITS 4 31 #define GCR_L2_CONFIG_SETSZ_SHIFT 12 32 #define GCR_L2_CONFIG_SETSZ_BITS 4 33 #define GCR_L2_CONFIG_BYPASS (1 << 20) 34 35 /* GCR_Cx_COHERENCE */ 36 #define GCR_Cx_COHERENCE_DOM_EN (0xff << 0) 37 #define GCR_Cx_COHERENCE_EN (0x1 << 0) 38 39 #ifndef __ASSEMBLY__ 40 41 #include <asm/io.h> 42 #include <linux/bitops.h> 43 44 #if CONFIG_IS_ENABLED(MIPS_CM) mips_cm_base(void)45static inline void *mips_cm_base(void) 46 { 47 return (void *)CKSEG1ADDR(CONFIG_MIPS_CM_BASE); 48 } 49 mips_cm_l2_line_size(void)50static inline unsigned long mips_cm_l2_line_size(void) 51 { 52 unsigned long l2conf, line_sz; 53 54 l2conf = __raw_readl(mips_cm_base() + GCR_L2_CONFIG); 55 56 line_sz = l2conf >> GCR_L2_CONFIG_LINESZ_SHIFT; 57 line_sz &= GENMASK(GCR_L2_CONFIG_LINESZ_BITS - 1, 0); 58 return line_sz ? (2 << line_sz) : 0; 59 } 60 #else mips_cm_base(void)61static inline void *mips_cm_base(void) 62 { 63 return NULL; 64 } 65 mips_cm_l2_line_size(void)66static inline unsigned long mips_cm_l2_line_size(void) 67 { 68 return 0; 69 } 70 #endif 71 72 #endif /* !__ASSEMBLY__ */ 73 74 #endif /* __MIPS_ASM_CM_H__ */ 75