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linux/arch/arc/include/asm/arcregs.h
Ye Liu 79e1c24285 mm: replace (20 - PAGE_SHIFT) with common macros for pages<->MB conversion 
Replace repeated (20 - PAGE_SHIFT) calculations with standard macros:
- MB_TO_PAGES(mb)    converts MB to page count
- PAGES_TO_MB(pages) converts pages to MB

No functional change.

[akpm@linux-foundation.org: remove arc's private PAGES_TO_MB, remove its unused PAGES_TO_KB]
[akpm@linux-foundation.org: don't include mm.h due to include file ordering mess]
Link: https://lkml.kernel.org/r/20250718024134.1304745-1-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Acked-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Chris Li <chrisl@kernel.org>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Ben Segall <bsegall@google.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Lai jiangshan <jiangshanlai@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Mel Gorman <mgorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: "Paul E . McKenney" <paulmck@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-13 16:54:42 -07:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*/
#ifndef _ASM_ARC_ARCREGS_H
#define _ASM_ARC_ARCREGS_H
/* Build Configuration Registers */
#define ARC_REG_AUX_DCCM 0x18 /* DCCM Base Addr ARCv2 */
#define ARC_REG_ERP_CTRL 0x3F /* ARCv2 Error protection control */
#define ARC_REG_DCCM_BASE_BUILD 0x61 /* DCCM Base Addr ARCompact */
#define ARC_REG_CRC_BCR 0x62
#define ARC_REG_VECBASE_BCR 0x68
#define ARC_REG_PERIBASE_BCR 0x69
#define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */
#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */
#define ARC_REG_ERP_BUILD 0xc7 /* ARCv2 Error protection Build: ECC/Parity */
#define ARC_REG_FP_V2_BCR 0xc8 /* ARCv2 FPU */
#define ARC_REG_SLC_BCR 0xce
#define ARC_REG_DCCM_BUILD 0x74 /* DCCM size (common) */
#define ARC_REG_AP_BCR 0x76
#define ARC_REG_ICCM_BUILD 0x78 /* ICCM size (common) */
#define ARC_REG_XY_MEM_BCR 0x79
#define ARC_REG_MAC_BCR 0x7a
#define ARC_REG_MPY_BCR 0x7b
#define ARC_REG_SWAP_BCR 0x7c
#define ARC_REG_NORM_BCR 0x7d
#define ARC_REG_MIXMAX_BCR 0x7e
#define ARC_REG_BARREL_BCR 0x7f
#define ARC_REG_D_UNCACH_BCR 0x6A
#define ARC_REG_BPU_BCR 0xc0
#define ARC_REG_ISA_CFG_BCR 0xc1
#define ARC_REG_LPB_BUILD 0xE9 /* ARCv2 Loop Buffer Build */
#define ARC_REG_RTT_BCR 0xF2
#define ARC_REG_IRQ_BCR 0xF3
#define ARC_REG_MICRO_ARCH_BCR 0xF9 /* ARCv2 Product revision */
#define ARC_REG_SMART_BCR 0xFF
#define ARC_REG_CLUSTER_BCR 0xcf
#define ARC_REG_AUX_ICCM 0x208 /* ICCM Base Addr (ARCv2) */
#define ARC_REG_LPB_CTRL 0x488 /* ARCv2 Loop Buffer control */
#define ARC_REG_FPU_CTRL 0x300
#define ARC_REG_FPU_STATUS 0x301
/* Common for ARCompact and ARCv2 status register */
#define ARC_REG_STATUS32 0x0A
/* status32 Bits Positions */
#define STATUS_AE_BIT 5 /* Exception active */
#define STATUS_DE_BIT 6 /* PC is in delay slot */
#define STATUS_U_BIT 7 /* User/Kernel mode */
#define STATUS_Z_BIT 11
#define STATUS_L_BIT 12 /* Loop inhibit */
/* These masks correspond to the status word(STATUS_32) bits */
#define STATUS_AE_MASK (1<<STATUS_AE_BIT)
#define STATUS_DE_MASK (1<<STATUS_DE_BIT)
#define STATUS_U_MASK (1<<STATUS_U_BIT)
#define STATUS_Z_MASK (1<<STATUS_Z_BIT)
#define STATUS_L_MASK (1<<STATUS_L_BIT)
/*
* ECR: Exception Cause Reg bits-n-pieces
* [23:16] = Exception Vector
* [15: 8] = Exception Cause Code
* [ 7: 0] = Exception Parameters (for certain types only)
*/
#ifdef CONFIG_ISA_ARCOMPACT
#define ECR_V_MEM_ERR 0x01
#define ECR_V_INSN_ERR 0x02
#define ECR_V_MACH_CHK 0x20
#define ECR_V_ITLB_MISS 0x21
#define ECR_V_DTLB_MISS 0x22
#define ECR_V_PROTV 0x23
#define ECR_V_TRAP 0x25
#else
#define ECR_V_MEM_ERR 0x01
#define ECR_V_INSN_ERR 0x02
#define ECR_V_MACH_CHK 0x03
#define ECR_V_ITLB_MISS 0x04
#define ECR_V_DTLB_MISS 0x05
#define ECR_V_PROTV 0x06
#define ECR_V_TRAP 0x09
#define ECR_V_MISALIGN 0x0d
#endif
/* DTLB Miss and Protection Violation Cause Codes */
#define ECR_C_PROTV_INST_FETCH 0x00
#define ECR_C_PROTV_LOAD 0x01
#define ECR_C_PROTV_STORE 0x02
#define ECR_C_PROTV_XCHG 0x03
#define ECR_C_PROTV_MISALIG_DATA 0x04
#define ECR_C_BIT_PROTV_MISALIG_DATA 10
/* Machine Check Cause Code Values */
#define ECR_C_MCHK_DUP_TLB 0x01
/* DTLB Miss Exception Cause Code Values */
#define ECR_C_BIT_DTLB_LD_MISS 8
#define ECR_C_BIT_DTLB_ST_MISS 9
/* Auxiliary registers */
#define AUX_IDENTITY 4
#define AUX_EXEC_CTRL 8
#define AUX_INTR_VEC_BASE 0x25
#define AUX_VOL 0x5e
/*
* Floating Pt Registers
* Status regs are read-only (build-time) so need not be saved/restored
*/
#define ARC_AUX_FP_STAT 0x300
#define ARC_AUX_DPFP_1L 0x301
#define ARC_AUX_DPFP_1H 0x302
#define ARC_AUX_DPFP_2L 0x303
#define ARC_AUX_DPFP_2H 0x304
#define ARC_AUX_DPFP_STAT 0x305
/*
* DSP-related registers
* Registers names must correspond to dsp_callee_regs structure fields names
* for automatic offset calculation in DSP_AUX_SAVE_RESTORE macros.
*/
#define ARC_AUX_DSP_BUILD 0x7A
#define ARC_AUX_ACC0_LO 0x580
#define ARC_AUX_ACC0_GLO 0x581
#define ARC_AUX_ACC0_HI 0x582
#define ARC_AUX_ACC0_GHI 0x583
#define ARC_AUX_DSP_BFLY0 0x598
#define ARC_AUX_DSP_CTRL 0x59F
#define ARC_AUX_DSP_FFT_CTRL 0x59E
#define ARC_AUX_AGU_BUILD 0xCC
#define ARC_AUX_AGU_AP0 0x5C0
#define ARC_AUX_AGU_AP1 0x5C1
#define ARC_AUX_AGU_AP2 0x5C2
#define ARC_AUX_AGU_AP3 0x5C3
#define ARC_AUX_AGU_OS0 0x5D0
#define ARC_AUX_AGU_OS1 0x5D1
#define ARC_AUX_AGU_MOD0 0x5E0
#define ARC_AUX_AGU_MOD1 0x5E1
#define ARC_AUX_AGU_MOD2 0x5E2
#define ARC_AUX_AGU_MOD3 0x5E3
#ifndef __ASSEMBLER__
#include <soc/arc/arc_aux.h>
/* Helpers */
#define TO_KB(bytes) ((bytes) >> 10)
#define TO_MB(bytes) (TO_KB(bytes) >> 10)
/*
***************************************************************
* Build Configuration Registers, with encoded hardware config
*/
struct bcr_identity {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int chip_id:16, cpu_id:8, family:8;
#else
unsigned int family:8, cpu_id:8, chip_id:16;
#endif
};
struct bcr_isa_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int div_rem:4, pad2:4, ldd:1, unalign:1, atomic:1, be:1,
pad1:12, ver:8;
#else
unsigned int ver:8, pad1:12, be:1, atomic:1, unalign:1,
ldd:1, pad2:4, div_rem:4;
#endif
};
struct bcr_uarch_build {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:8, prod:8, maj:8, min:8;
#else
unsigned int min:8, maj:8, prod:8, pad:8;
#endif
};
struct bcr_mmu_3 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int ver:8, ways:4, sets:4, res:3, sasid:1, pg_sz:4,
u_itlb:4, u_dtlb:4;
#else
unsigned int u_dtlb:4, u_itlb:4, pg_sz:4, sasid:1, res:3, sets:4,
ways:4, ver:8;
#endif
};
struct bcr_mmu_4 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int ver:8, sasid:1, sz1:4, sz0:4, res:2, pae:1,
n_ways:2, n_entry:2, n_super:2, u_itlb:3, u_dtlb:3;
#else
/* DTLB ITLB JES JE JA */
unsigned int u_dtlb:3, u_itlb:3, n_super:2, n_entry:2, n_ways:2,
pae:1, res:2, sz0:4, sz1:4, sasid:1, ver:8;
#endif
};
struct bcr_cache {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:12, line_len:4, sz:4, config:4, ver:8;
#else
unsigned int ver:8, config:4, sz:4, line_len:4, pad:12;
#endif
};
struct bcr_slc_cfg {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:24, way:2, lsz:2, sz:4;
#else
unsigned int sz:4, lsz:2, way:2, pad:24;
#endif
};
struct bcr_clust_cfg {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:7, c:1, num_entries:8, num_cores:8, ver:8;
#else
unsigned int ver:8, num_cores:8, num_entries:8, c:1, pad:7;
#endif
};
struct bcr_volatile {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int start:4, limit:4, pad:22, order:1, disable:1;
#else
unsigned int disable:1, order:1, pad:22, limit:4, start:4;
#endif
};
struct bcr_mpy {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8;
#else
unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8;
#endif
};
struct bcr_iccm_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int base:16, pad:5, sz:3, ver:8;
#else
unsigned int ver:8, sz:3, pad:5, base:16;
#endif
};
struct bcr_iccm_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:8, sz11:4, sz01:4, sz10:4, sz00:4, ver:8;
#else
unsigned int ver:8, sz00:4, sz10:4, sz01:4, sz11:4, pad:8;
#endif
};
struct bcr_dccm_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int res:21, sz:3, ver:8;
#else
unsigned int ver:8, sz:3, res:21;
#endif
};
struct bcr_dccm_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:12, cyc:3, pad1:1, sz1:4, sz0:4, ver:8;
#else
unsigned int ver:8, sz0:4, sz1:4, pad1:1, cyc:3, pad2:12;
#endif
};
/* ARCompact: Both SP and DP FPU BCRs have same format */
struct bcr_fp_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int fast:1, ver:8;
#else
unsigned int ver:8, fast:1;
#endif
};
struct bcr_fp_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:15, dp:1, pad1:7, sp:1, ver:8;
#else
unsigned int ver:8, sp:1, pad1:7, dp:1, pad2:15;
#endif
};
struct bcr_actionpoint {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:21, min:1, num:2, ver:8;
#else
unsigned int ver:8, num:2, min:1, pad:21;
#endif
};
#include <soc/arc/timers.h>
struct bcr_bpu_arcompact {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8;
#else
unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19;
#endif
};
struct bcr_bpu_arcv2 {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:6, fbe:2, tqe:2, ts:4, ft:1, rse:2, pte:3, bce:3, ver:8;
#else
unsigned int ver:8, bce:3, pte:3, rse:2, ft:1, ts:4, tqe:2, fbe:2, pad:6;
#endif
};
/* Error Protection Build: ECC/Parity */
struct bcr_erp {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad3:5, mmu:3, pad2:4, ic:3, dc:3, pad1:6, ver:8;
#else
unsigned int ver:8, pad1:6, dc:3, ic:3, pad2:4, mmu:3, pad3:5;
#endif
};
/* Error Protection Control */
struct ctl_erp {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad2:27, mpd:1, pad1:2, dpd:1, dpi:1;
#else
unsigned int dpi:1, dpd:1, pad1:2, mpd:1, pad2:27;
#endif
};
struct bcr_lpb {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad:16, entries:8, ver:8;
#else
unsigned int ver:8, entries:8, pad:16;
#endif
};
struct bcr_generic {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int info:24, ver:8;
#else
unsigned int ver:8, info:24;
#endif
};
static inline int is_isa_arcv2(void)
{
return IS_ENABLED(CONFIG_ISA_ARCV2);
}
static inline int is_isa_arcompact(void)
{
return IS_ENABLED(CONFIG_ISA_ARCOMPACT);
}
#endif /* __ASEMBLY__ */
#endif /* _ASM_ARC_ARCREGS_H */
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