1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2022, Ovidiu Panait <ovpanait@gmail.com> 4 */ 5 6 #ifndef __ASM_MICROBLAZE_PVR_H 7 #define __ASM_MICROBLAZE_PVR_H 8 9 #include <asm/asm.h> 10 11 #define PVR_FULL_COUNT 13 /* PVR0 - PVR12 */ 12 13 #define __get_pvr(val, reg) \ 14 __asm__ __volatile__ ("mfs %0," #reg : "=r" (val) :: "memory") 15 #define get_pvr(pvrid, val) \ 16 __get_pvr(val, rpvr ## pvrid) 17 18 #define PVR_MSR_BIT 0x00000400 19 20 /* PVR0 masks */ 21 #define PVR0_PVR_FULL_MASK 0x80000000 22 #define PVR0_VERSION_MASK 0x0000FF00 23 24 /* PVR4 masks - ICache configs */ 25 #define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000 /* ICLL */ 26 #define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000 /* ICBS */ 27 28 /* PVR5 masks - DCache configs */ 29 #define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000 /* DCLL */ 30 #define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000 /* DCBS */ 31 32 /* PVR10 masks - FPGA family */ 33 #define PVR10_TARGET_FAMILY_MASK 0xFF000000 34 35 /* PVR11 masks - MMU */ 36 #define PVR11_USE_MMU 0xC0000000 37 38 /* PVR access macros */ 39 #define PVR_VERSION(pvr) \ 40 ((pvr[0] & PVR0_VERSION_MASK) >> 8) 41 42 #define PVR_ICACHE_LINE_LEN(pvr) \ 43 ((1 << ((pvr[4] & PVR4_ICACHE_LINE_LEN_MASK) >> 21)) << 2) 44 #define PVR_ICACHE_BYTE_SIZE(pvr) \ 45 (1 << ((pvr[4] & PVR4_ICACHE_BYTE_SIZE_MASK) >> 16)) 46 47 #define PVR_DCACHE_LINE_LEN(pvr) \ 48 ((1 << ((pvr[5] & PVR5_DCACHE_LINE_LEN_MASK) >> 21)) << 2) 49 #define PVR_DCACHE_BYTE_SIZE(pvr) \ 50 (1 << ((pvr[5] & PVR5_DCACHE_BYTE_SIZE_MASK) >> 16)) 51 52 #define PVR_USE_MMU(pvr) \ 53 ((pvr[11] & PVR11_USE_MMU) >> 30) 54 55 #define PVR_TARGET_FAMILY(pvr) \ 56 ((pvr[10] & PVR10_TARGET_FAMILY_MASK) >> 24) 57 58 /** 59 * microblaze_cpu_has_pvr_full() - Check for full PVR support 60 * 61 * Check MSR register for PVR support and, if applicable, check the PVR0 62 * register for full PVR support. 63 * 64 * Return: 1 if there is full PVR support, 0 otherwise. 65 */ 66 int microblaze_cpu_has_pvr_full(void); 67 68 /** 69 * microblaze_get_all_pvrs() - Copy PVR0-PVR12 to destination array 70 * 71 * @pvr: destination array of size PVR_FULL_COUNT 72 */ 73 void microblaze_get_all_pvrs(u32 pvr[PVR_FULL_COUNT]); 74 75 #endif /* __ASM_MICROBLAZE_PVR_H */ 76