^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * SN Platform GRU Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * GRU DRIVER TABLES, MACROS, externs, etc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef __GRUTABLES_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define __GRUTABLES_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * GRU Chiplet:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * The GRU is a user addressible memory accelerator. It provides
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * several forms of load, store, memset, bcopy instructions. In addition, it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * contains special instructions for AMOs, sending messages to message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * queues, etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * The GRU is an integral part of the node controller. It connects
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * directly to the cpu socket. In its current implementation, there are 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * GRU chiplets in the node controller on each blade (~node).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * The entire GRU memory space is fully coherent and cacheable by the cpus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * Each GRU chiplet has a physical memory map that looks like the following:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * +-----------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * |/////////////////|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * +-----------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * | system control |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * +-----------------+ _______ +-------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * |/////////////////| / | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * |/////////////////| / | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * |/////////////////| / | instructions|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * |/////////////////| / | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * |/////////////////| / | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * |/////////////////| / |-------------|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * |/////////////////| / | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * +-----------------+ | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * | context 15 | | data |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * +-----------------+ | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * | ...... | \ | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * +-----------------+ \____________ +-------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * | context 1 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * +-----------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * | context 0 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * +-----------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * Each of the "contexts" is a chunk of memory that can be mmaped into user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * space. The context consists of 2 parts:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * - an instruction space that can be directly accessed by the user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * to issue GRU instructions and to check instruction status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * - a data area that acts as normal RAM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * User instructions contain virtual addresses of data to be accessed by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * GRU. The GRU contains a TLB that is used to convert these user virtual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * addresses to physical addresses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * The "system control" area of the GRU chiplet is used by the kernel driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * to manage user contexts and to perform functions such as TLB dropin and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * purging.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * One context may be reserved for the kernel and used for cross-partition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * communication. The GRU will also be used to asynchronously zero out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * large blocks of memory (not currently implemented).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Tables:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * VDATA-VMA Data - Holds a few parameters. Head of linked list of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * GTS tables for threads using the GSEG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * GTS - Gru Thread State - contains info for managing a GSEG context. A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * GTS is allocated for each thread accessing a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * GSEG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * GTD - GRU Thread Data - contains shadow copy of GRU data when GSEG is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * not loaded into a GRU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * GMS - GRU Memory Struct - Used to manage TLB shootdowns. Tracks GRUs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * where a GSEG has been loaded. Similar to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * an mm_struct but for GRU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * GS - GRU State - Used to manage the state of a GRU chiplet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * BS - Blade State - Used to manage state of all GRU chiplets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * on a blade
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * Normal task tables for task using GRU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * - 2 threads in process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * - 2 GSEGs open in process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * - GSEG1 is being used by both threads
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * - GSEG2 is used only by thread 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * task -->|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * task ---+---> mm ->------ (notifier) -------+-> gms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * |--> vma -> vdata ---> gts--->| GSEG1 (thread1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * | | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * | +-> gts--->| GSEG1 (thread2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * |--> vma -> vdata ---> gts--->| GSEG2 (thread2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * .
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * .
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * GSEGs are marked DONTCOPY on fork
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * At open
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * file.private_data -> NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * At mmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * vma -> vdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * After gseg reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * vma -> vdata ->gts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * After fork
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * parent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * vma -> vdata -> gts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * child
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * (vma is not copied)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #include <linux/rmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #include <linux/mmu_notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #include <linux/mm_types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #include "gru.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #include "grulib.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #include "gruhandles.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) extern struct gru_stats_s gru_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) extern struct gru_blade_state *gru_base[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) extern unsigned long gru_start_paddr, gru_end_paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) extern void *gru_start_vaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) extern unsigned int gru_max_gids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) #define GRU_MAX_BLADES MAX_NUMNODES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define GRU_MAX_GRUS (GRU_MAX_BLADES * GRU_CHIPLETS_PER_BLADE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define GRU_DRIVER_ID_STR "SGI GRU Device Driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define GRU_DRIVER_VERSION_STR "0.85"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * GRU statistics.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct gru_stats_s {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) atomic_long_t vdata_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) atomic_long_t vdata_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) atomic_long_t gts_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) atomic_long_t gts_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) atomic_long_t gms_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) atomic_long_t gms_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) atomic_long_t gts_double_allocate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) atomic_long_t assign_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) atomic_long_t assign_context_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) atomic_long_t free_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) atomic_long_t load_user_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) atomic_long_t load_kernel_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) atomic_long_t lock_kernel_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) atomic_long_t unlock_kernel_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) atomic_long_t steal_user_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) atomic_long_t steal_kernel_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) atomic_long_t steal_context_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) atomic_long_t nopfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) atomic_long_t asid_new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) atomic_long_t asid_next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) atomic_long_t asid_wrap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) atomic_long_t asid_reuse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) atomic_long_t intr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) atomic_long_t intr_cbr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) atomic_long_t intr_tfh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) atomic_long_t intr_spurious;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) atomic_long_t intr_mm_lock_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) atomic_long_t call_os;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) atomic_long_t call_os_wait_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) atomic_long_t user_flush_tlb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) atomic_long_t user_unload_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) atomic_long_t user_exception;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) atomic_long_t set_context_option;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) atomic_long_t check_context_retarget_intr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) atomic_long_t check_context_unload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) atomic_long_t tlb_dropin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) atomic_long_t tlb_preload_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) atomic_long_t tlb_dropin_fail_no_asid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) atomic_long_t tlb_dropin_fail_upm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) atomic_long_t tlb_dropin_fail_invalid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) atomic_long_t tlb_dropin_fail_range_active;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) atomic_long_t tlb_dropin_fail_idle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) atomic_long_t tlb_dropin_fail_fmm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) atomic_long_t tlb_dropin_fail_no_exception;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) atomic_long_t tfh_stale_on_fault;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) atomic_long_t mmu_invalidate_range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) atomic_long_t mmu_invalidate_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) atomic_long_t flush_tlb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) atomic_long_t flush_tlb_gru;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) atomic_long_t flush_tlb_gru_tgh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) atomic_long_t flush_tlb_gru_zero_asid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) atomic_long_t copy_gpa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) atomic_long_t read_gpa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) atomic_long_t mesq_receive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) atomic_long_t mesq_receive_none;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) atomic_long_t mesq_send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) atomic_long_t mesq_send_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) atomic_long_t mesq_noop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) atomic_long_t mesq_send_unexpected_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) atomic_long_t mesq_send_lb_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) atomic_long_t mesq_send_qlimit_reached;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) atomic_long_t mesq_send_amo_nacked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) atomic_long_t mesq_send_put_nacked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) atomic_long_t mesq_page_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) atomic_long_t mesq_qf_locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) atomic_long_t mesq_qf_noop_not_full;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) atomic_long_t mesq_qf_switch_head_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) atomic_long_t mesq_qf_unexpected_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) atomic_long_t mesq_noop_unexpected_error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) atomic_long_t mesq_noop_lb_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) atomic_long_t mesq_noop_qlimit_reached;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) atomic_long_t mesq_noop_amo_nacked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) atomic_long_t mesq_noop_put_nacked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) atomic_long_t mesq_noop_page_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) cchop_deallocate, tfhop_write_only, tfhop_write_restart,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) tghop_invalidate, mcsop_last};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct mcs_op_statistic {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) atomic_long_t count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) atomic_long_t total;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) unsigned long max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) extern struct mcs_op_statistic mcs_op_statistics[mcsop_last];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #define OPT_DPRINT 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #define OPT_STATS 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #define IRQ_GRU 110 /* Starting IRQ number for interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) /* Delay in jiffies between attempts to assign a GRU context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) #define GRU_ASSIGN_DELAY ((HZ * 20) / 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * If a process has it's context stolen, min delay in jiffies before trying to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * steal a context from another process.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) #define GRU_STEAL_DELAY ((HZ * 200) / 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) #define STAT(id) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (gru_options & OPT_STATS) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) atomic_long_inc(&gru_stats.id); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #ifdef CONFIG_SGI_GRU_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #define gru_dbg(dev, fmt, x...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (gru_options & OPT_DPRINT) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) printk(KERN_DEBUG "GRU:%d %s: " fmt, smp_processor_id(), __func__, x);\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) #define gru_dbg(x...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /*-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * ASID management
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) #define MAX_ASID 0xfffff0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) #define MIN_ASID 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) #define ASID_INC 8 /* number of regions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* Generate a GRU asid value from a GRU base asid & a virtual address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) #define VADDR_HI_BIT 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) #define GRUREGION(addr) ((addr) >> (VADDR_HI_BIT - 3) & 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) #define GRUASID(asid, addr) ((asid) + GRUREGION(addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) /*------------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * File & VMS Tables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct gru_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * This structure is pointed to from the mmstruct via the notifier pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * There is one of these per address space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct gru_mm_tracker { /* pack to reduce size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) unsigned int mt_asid_gen:24; /* ASID wrap count */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) unsigned int mt_asid:24; /* current base ASID for gru */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) unsigned short mt_ctxbitmap:16;/* bitmap of contexts using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) asid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) } __attribute__ ((packed));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) struct gru_mm_struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) struct mmu_notifier ms_notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) spinlock_t ms_asid_lock; /* protects ASID assignment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) atomic_t ms_range_active;/* num range_invals active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) wait_queue_head_t ms_wait_queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) DECLARE_BITMAP(ms_asidmap, GRU_MAX_GRUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) struct gru_mm_tracker ms_asids[GRU_MAX_GRUS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * One of these structures is allocated when a GSEG is mmaped. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * structure is pointed to by the vma->vm_private_data field in the vma struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct gru_vma_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) spinlock_t vd_lock; /* Serialize access to vma */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct list_head vd_head; /* head of linked list of gts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) long vd_user_options;/* misc user option flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) int vd_cbr_au_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) int vd_dsr_au_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) unsigned char vd_tlb_preload_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) * One of these is allocated for each thread accessing a mmaped GRU. A linked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * list of these structure is hung off the struct gru_vma_data in the mm_struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) struct gru_thread_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) struct list_head ts_next; /* list - head at vma-private */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct mutex ts_ctxlock; /* load/unload CTX lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) struct mm_struct *ts_mm; /* mm currently mapped to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct vm_area_struct *ts_vma; /* vma of GRU context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct gru_state *ts_gru; /* GRU where the context is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) loaded */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) struct gru_mm_struct *ts_gms; /* asid & ioproc struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) unsigned char ts_tlb_preload_count; /* TLB preload pages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) unsigned long ts_cbr_map; /* map of allocated CBRs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) unsigned long ts_dsr_map; /* map of allocated DATA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) resources */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) unsigned long ts_steal_jiffies;/* jiffies when context last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) stolen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) long ts_user_options;/* misc user option flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) pid_t ts_tgid_owner; /* task that is using the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) context - for migration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) short ts_user_blade_id;/* user selected blade */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) char ts_user_chiplet_id;/* user selected chiplet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) unsigned short ts_sizeavail; /* Pagesizes in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) int ts_tsid; /* thread that owns the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) int ts_tlb_int_select;/* target cpu if interrupts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) int ts_ctxnum; /* context number where the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) context is loaded */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) atomic_t ts_refcnt; /* reference count GTS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) unsigned char ts_dsr_au_count;/* Number of DSR resources
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) required for contest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) unsigned char ts_cbr_au_count;/* Number of CBR resources
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) required for contest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) char ts_cch_req_slice;/* CCH packet slice */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) char ts_blade; /* If >= 0, migrate context if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) ref from different blade */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) char ts_force_cch_reload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) char ts_cbr_idx[GRU_CBR_AU];/* CBR numbers of each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) allocated CB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) int ts_data_valid; /* Indicates if ts_gdata has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) valid data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct gru_gseg_statistics ustats; /* User statistics */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) unsigned long ts_gdata[]; /* save area for GRU data (CB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) DS, CBE) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * Threaded programs actually allocate an array of GSEGs when a context is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) * created. Each thread uses a separate GSEG. TSID is the index into the GSEG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) * array.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) #define TSID(a, v) (((a) - (v)->vm_start) / GRU_GSEG_PAGESIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) #define UGRUADDR(gts) ((gts)->ts_vma->vm_start + \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) (gts)->ts_tsid * GRU_GSEG_PAGESIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) #define NULLCTX (-1) /* if context not loaded into GRU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) /*-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) * GRU State Tables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * One of these exists for each GRU chiplet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) struct gru_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct gru_blade_state *gs_blade; /* GRU state for entire
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) blade */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) unsigned long gs_gru_base_paddr; /* Physical address of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) gru segments (64) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) void *gs_gru_base_vaddr; /* Virtual address of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) gru segments (64) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) unsigned short gs_gid; /* unique GRU number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) unsigned short gs_blade_id; /* blade of GRU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) unsigned char gs_chiplet_id; /* blade chiplet of GRU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) unsigned char gs_tgh_local_shift; /* used to pick TGH for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) local flush */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) unsigned char gs_tgh_first_remote; /* starting TGH# for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) remote flush */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) spinlock_t gs_asid_lock; /* lock used for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) assigning asids */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) spinlock_t gs_lock; /* lock used for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) assigning contexts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /* -- the following are protected by the gs_asid_lock spinlock ---- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) unsigned int gs_asid; /* Next availe ASID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) unsigned int gs_asid_limit; /* Limit of available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) ASIDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) unsigned int gs_asid_gen; /* asid generation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) Inc on wrap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) /* --- the following fields are protected by the gs_lock spinlock --- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) unsigned long gs_context_map; /* bitmap to manage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) contexts in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) unsigned long gs_cbr_map; /* bitmap to manage CB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) resources */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) unsigned long gs_dsr_map; /* bitmap used to manage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) DATA resources */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) unsigned int gs_reserved_cbrs; /* Number of kernel-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) reserved cbrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) unsigned int gs_reserved_dsr_bytes; /* Bytes of kernel-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) reserved dsrs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) unsigned short gs_active_contexts; /* number of contexts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) in use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct gru_thread_state *gs_gts[GRU_NUM_CCH]; /* GTS currently using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) the context */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) int gs_irq[GRU_NUM_TFM]; /* Interrupt irqs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * This structure contains the GRU state for all the GRUs on a blade.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) struct gru_blade_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) void *kernel_cb; /* First kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) reserved cb */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) void *kernel_dsr; /* First kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) reserved DSR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) struct rw_semaphore bs_kgts_sema; /* lock for kgts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) struct gru_thread_state *bs_kgts; /* GTS for kernel use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) /* ---- the following are used for managing kernel async GRU CBRs --- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) int bs_async_dsr_bytes; /* DSRs for async */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) int bs_async_cbrs; /* CBRs AU for async */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) struct completion *bs_async_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /* ---- the following are protected by the bs_lock spinlock ---- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) spinlock_t bs_lock; /* lock used for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) stealing contexts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) int bs_lru_ctxnum; /* STEAL - last context
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) stolen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) struct gru_state *bs_lru_gru; /* STEAL - last gru
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) stolen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) struct gru_state bs_grus[GRU_CHIPLETS_PER_BLADE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) /*-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * Address Primitives
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) #define get_tfm_for_cpu(g, c) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) ((struct gru_tlb_fault_map *)get_tfm((g)->gs_gru_base_vaddr, (c)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) #define get_tfh_by_index(g, i) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) ((struct gru_tlb_fault_handle *)get_tfh((g)->gs_gru_base_vaddr, (i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) #define get_tgh_by_index(g, i) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) ((struct gru_tlb_global_handle *)get_tgh((g)->gs_gru_base_vaddr, (i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) #define get_cbe_by_index(g, i) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) ((struct gru_control_block_extended *)get_cbe((g)->gs_gru_base_vaddr,\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) (i)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /*-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * Useful Macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) /* Given a blade# & chiplet#, get a pointer to the GRU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) #define get_gru(b, c) (&gru_base[b]->bs_grus[c])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) /* Number of bytes to save/restore when unloading/loading GRU contexts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) #define DSR_BYTES(dsr) ((dsr) * GRU_DSR_AU_BYTES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) #define CBR_BYTES(cbr) ((cbr) * GRU_HANDLE_BYTES * GRU_CBR_AU_SIZE * 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) /* Convert a user CB number to the actual CBRNUM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) #define thread_cbr_number(gts, n) ((gts)->ts_cbr_idx[(n) / GRU_CBR_AU_SIZE] \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * GRU_CBR_AU_SIZE + (n) % GRU_CBR_AU_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) /* Convert a gid to a pointer to the GRU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) #define GID_TO_GRU(gid) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) (gru_base[(gid) / GRU_CHIPLETS_PER_BLADE] ? \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) (&gru_base[(gid) / GRU_CHIPLETS_PER_BLADE]-> \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) bs_grus[(gid) % GRU_CHIPLETS_PER_BLADE]) : \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) /* Scan all active GRUs in a GRU bitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) #define for_each_gru_in_bitmap(gid, map) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) for_each_set_bit((gid), (map), GRU_MAX_GRUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /* Scan all active GRUs on a specific blade */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) #define for_each_gru_on_blade(gru, nid, i) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) for ((gru) = gru_base[nid]->bs_grus, (i) = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) (i) < GRU_CHIPLETS_PER_BLADE; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) (i)++, (gru)++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) /* Scan all GRUs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) #define foreach_gid(gid) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) for ((gid) = 0; (gid) < gru_max_gids; (gid)++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) /* Scan all active GTSs on a gru. Note: must hold ss_lock to use this macro. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) #define for_each_gts_on_gru(gts, gru, ctxnum) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) for ((ctxnum) = 0; (ctxnum) < GRU_NUM_CCH; (ctxnum)++) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (((gts) = (gru)->gs_gts[ctxnum]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /* Scan each CBR whose bit is set in a TFM (or copy of) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) #define for_each_cbr_in_tfm(i, map) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) for_each_set_bit((i), (map), GRU_NUM_CBE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /* Scan each CBR in a CBR bitmap. Note: multiple CBRs in an allocation unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) #define for_each_cbr_in_allocation_map(i, map, k) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) for_each_set_bit((k), (map), GRU_CBR_AU) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) for ((i) = (k)*GRU_CBR_AU_SIZE; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) (i) < ((k) + 1) * GRU_CBR_AU_SIZE; (i)++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) /* Scan each DSR in a DSR bitmap. Note: multiple DSRs in an allocation unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) #define for_each_dsr_in_allocation_map(i, map, k) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) for_each_set_bit((k), (const unsigned long *)(map), GRU_DSR_AU) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) for ((i) = (k) * GRU_DSR_AU_CL; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) (i) < ((k) + 1) * GRU_DSR_AU_CL; (i)++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) #define gseg_physical_address(gru, ctxnum) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) ((gru)->gs_gru_base_paddr + ctxnum * GRU_GSEG_STRIDE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) #define gseg_virtual_address(gru, ctxnum) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) ((gru)->gs_gru_base_vaddr + ctxnum * GRU_GSEG_STRIDE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /*-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * Lock / Unlock GRU handles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * Use the "delresp" bit in the handle as a "lock" bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) /* Lock hierarchy checking enabled only in emulator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) /* 0 = lock failed, 1 = locked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) static inline int __trylock_handle(void *h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) return !test_and_set_bit(1, h);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) static inline void __lock_handle(void *h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) while (test_and_set_bit(1, h))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) cpu_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) static inline void __unlock_handle(void *h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) clear_bit(1, h);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) static inline int trylock_cch_handle(struct gru_context_configuration_handle *cch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) return __trylock_handle(cch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) static inline void lock_cch_handle(struct gru_context_configuration_handle *cch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) __lock_handle(cch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) static inline void unlock_cch_handle(struct gru_context_configuration_handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) *cch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) __unlock_handle(cch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) static inline void lock_tgh_handle(struct gru_tlb_global_handle *tgh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) __lock_handle(tgh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) static inline void unlock_tgh_handle(struct gru_tlb_global_handle *tgh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) __unlock_handle(tgh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) static inline int is_kernel_context(struct gru_thread_state *gts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) return !gts->ts_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * The following are for Nehelem-EX. A more general scheme is needed for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) * future processors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #define UV_MAX_INT_CORES 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) #define uv_cpu_socket_number(p) ((cpu_physical_id(p) >> 5) & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) #define uv_cpu_ht_number(p) (cpu_physical_id(p) & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) #define uv_cpu_core_number(p) (((cpu_physical_id(p) >> 2) & 4) | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) ((cpu_physical_id(p) >> 1) & 3))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) /*-----------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * Function prototypes & externs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) struct gru_unload_context_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) extern const struct vm_operations_struct gru_vm_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) extern struct device *grudev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) extern struct gru_vma_data *gru_alloc_vma_data(struct vm_area_struct *vma,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) int tsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) extern struct gru_thread_state *gru_find_thread_state(struct vm_area_struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) *vma, int tsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) extern struct gru_thread_state *gru_alloc_thread_state(struct vm_area_struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) *vma, int tsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) extern struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) extern void gru_load_context(struct gru_thread_state *gts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) extern void gru_steal_context(struct gru_thread_state *gts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) extern void gru_unload_context(struct gru_thread_state *gts, int savestate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) extern int gru_update_cch(struct gru_thread_state *gts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) extern void gts_drop(struct gru_thread_state *gts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) extern void gru_tgh_flush_init(struct gru_state *gru);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) extern int gru_kservices_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) extern void gru_kservices_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) extern irqreturn_t gru0_intr(int irq, void *dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) extern irqreturn_t gru1_intr(int irq, void *dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) extern irqreturn_t gru_intr_mblade(int irq, void *dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) extern int gru_dump_chiplet_request(unsigned long arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) extern long gru_get_gseg_statistics(unsigned long arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) extern int gru_handle_user_call_os(unsigned long address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) extern int gru_user_flush_tlb(unsigned long arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) extern int gru_user_unload_context(unsigned long arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) extern int gru_get_exception_detail(unsigned long arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) extern int gru_set_context_option(unsigned long address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) extern void gru_check_context_placement(struct gru_thread_state *gts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) extern int gru_cpu_fault_map_id(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) extern struct vm_area_struct *gru_find_vma(unsigned long vaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) extern void gru_flush_all_tlb(struct gru_state *gru);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) extern int gru_proc_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) extern void gru_proc_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) extern struct gru_thread_state *gru_alloc_gts(struct vm_area_struct *vma,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) int cbr_au_count, int dsr_au_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) unsigned char tlb_preload_count, int options, int tsid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) extern unsigned long gru_reserve_cb_resources(struct gru_state *gru,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) int cbr_au_count, char *cbmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) extern unsigned long gru_reserve_ds_resources(struct gru_state *gru,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) int dsr_au_count, char *dsmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) extern vm_fault_t gru_fault(struct vm_fault *vmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) extern struct gru_mm_struct *gru_register_mmu_notifier(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) extern void gru_drop_mmu_notifier(struct gru_mm_struct *gms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) extern int gru_ktest(unsigned long arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) extern void gru_flush_tlb_range(struct gru_mm_struct *gms, unsigned long start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) unsigned long len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) extern unsigned long gru_options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) #endif /* __GRUTABLES_H__ */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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