| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * SN Platform GRU Driver |
| * |
| * GRU DRIVER TABLES, MACROS, externs, etc |
| * |
| * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. |
| */ |
| |
| #ifndef __GRUTABLES_H__ |
| #define __GRUTABLES_H__ |
| |
| /* |
| * GRU Chiplet: |
| * The GRU is a user addressible memory accelerator. It provides |
| * several forms of load, store, memset, bcopy instructions. In addition, it |
| * contains special instructions for AMOs, sending messages to message |
| * queues, etc. |
| * |
| * The GRU is an integral part of the node controller. It connects |
| * directly to the cpu socket. In its current implementation, there are 2 |
| * GRU chiplets in the node controller on each blade (~node). |
| * |
| * The entire GRU memory space is fully coherent and cacheable by the cpus. |
| * |
| * Each GRU chiplet has a physical memory map that looks like the following: |
| * |
| * +-----------------+ |
| * |/////////////////| |
| * |/////////////////| |
| * |/////////////////| |
| * |/////////////////| |
| * |/////////////////| |
| * |/////////////////| |
| * |/////////////////| |
| * |/////////////////| |
| * +-----------------+ |
| * | system control | |
| * +-----------------+ _______ +-------------+ |
| * |/////////////////| / | | |
| * |/////////////////| / | | |
| * |/////////////////| / | instructions| |
| * |/////////////////| / | | |
| * |/////////////////| / | | |
| * |/////////////////| / |-------------| |
| * |/////////////////| / | | |
| * +-----------------+ | | |
| * | context 15 | | data | |
| * +-----------------+ | | |
| * | ...... | \ | | |
| * +-----------------+ \____________ +-------------+ |
| * | context 1 | |
| * +-----------------+ |
| * | context 0 | |
| * +-----------------+ |
| * |
| * Each of the "contexts" is a chunk of memory that can be mmaped into user |
| * space. The context consists of 2 parts: |
| * |
| * - an instruction space that can be directly accessed by the user |
| * to issue GRU instructions and to check instruction status. |
| * |
| * - a data area that acts as normal RAM. |
| * |
| * User instructions contain virtual addresses of data to be accessed by the |
| * GRU. The GRU contains a TLB that is used to convert these user virtual |
| * addresses to physical addresses. |
| * |
| * The "system control" area of the GRU chiplet is used by the kernel driver |
| * to manage user contexts and to perform functions such as TLB dropin and |
| * purging. |
| * |
| * One context may be reserved for the kernel and used for cross-partition |
| * communication. The GRU will also be used to asynchronously zero out |
| * large blocks of memory (not currently implemented). |
| * |
| * |
| * Tables: |
| * |
| * VDATA-VMA Data - Holds a few parameters. Head of linked list of |
| * GTS tables for threads using the GSEG |
| * GTS - Gru Thread State - contains info for managing a GSEG context. A |
| * GTS is allocated for each thread accessing a |
| * GSEG. |
| * GTD - GRU Thread Data - contains shadow copy of GRU data when GSEG is |
| * not loaded into a GRU |
| * GMS - GRU Memory Struct - Used to manage TLB shootdowns. Tracks GRUs |
| * where a GSEG has been loaded. Similar to |
| * an mm_struct but for GRU. |
| * |
| * GS - GRU State - Used to manage the state of a GRU chiplet |
| * BS - Blade State - Used to manage state of all GRU chiplets |
| * on a blade |
| * |
| * |
| * Normal task tables for task using GRU. |
| * - 2 threads in process |
| * - 2 GSEGs open in process |
| * - GSEG1 is being used by both threads |
| * - GSEG2 is used only by thread 2 |
| * |
| * task -->| |
| * task ---+---> mm ->------ (notifier) -------+-> gms |
| * | | |
| * |--> vma -> vdata ---> gts--->| GSEG1 (thread1) |
| * | | | |
| * | +-> gts--->| GSEG1 (thread2) |
| * | | |
| * |--> vma -> vdata ---> gts--->| GSEG2 (thread2) |
| * . |
| * . |
| * |
| * GSEGs are marked DONTCOPY on fork |
| * |
| * At open |
| * file.private_data -> NULL |
| * |
| * At mmap, |
| * vma -> vdata |
| * |
| * After gseg reference |
| * vma -> vdata ->gts |
| * |
| * After fork |
| * parent |
| * vma -> vdata -> gts |
| * child |
| * (vma is not copied) |
| * |
| */ |
| |
| #include <linux/rmap.h> |
| #include <linux/interrupt.h> |
| #include <linux/mutex.h> |
| #include <linux/wait.h> |
| #include <linux/mmu_notifier.h> |
| #include <linux/mm_types.h> |
| #include "gru.h" |
| #include "grulib.h" |
| #include "gruhandles.h" |
| |
| extern struct gru_stats_s gru_stats; |
| extern struct gru_blade_state *gru_base[]; |
| extern unsigned long gru_start_paddr, gru_end_paddr; |
| extern void *gru_start_vaddr; |
| extern unsigned int gru_max_gids; |
| |
| #define GRU_MAX_BLADES MAX_NUMNODES |
| #define GRU_MAX_GRUS (GRU_MAX_BLADES * GRU_CHIPLETS_PER_BLADE) |
| |
| #define GRU_DRIVER_ID_STR "SGI GRU Device Driver" |
| #define GRU_DRIVER_VERSION_STR "0.85" |
| |
| /* |
| * GRU statistics. |
| */ |
| struct gru_stats_s { |
| atomic_long_t vdata_alloc; |
| atomic_long_t vdata_free; |
| atomic_long_t gts_alloc; |
| atomic_long_t gts_free; |
| atomic_long_t gms_alloc; |
| atomic_long_t gms_free; |
| atomic_long_t gts_double_allocate; |
| atomic_long_t assign_context; |
| atomic_long_t assign_context_failed; |
| atomic_long_t free_context; |
| atomic_long_t load_user_context; |
| atomic_long_t load_kernel_context; |
| atomic_long_t lock_kernel_context; |
| atomic_long_t unlock_kernel_context; |
| atomic_long_t steal_user_context; |
| atomic_long_t steal_kernel_context; |
| atomic_long_t steal_context_failed; |
| atomic_long_t nopfn; |
| atomic_long_t asid_new; |
| atomic_long_t asid_next; |
| atomic_long_t asid_wrap; |
| atomic_long_t asid_reuse; |
| atomic_long_t intr; |
| atomic_long_t intr_cbr; |
| atomic_long_t intr_tfh; |
| atomic_long_t intr_spurious; |
| atomic_long_t intr_mm_lock_failed; |
| atomic_long_t call_os; |
| atomic_long_t call_os_wait_queue; |
| atomic_long_t user_flush_tlb; |
| atomic_long_t user_unload_context; |
| atomic_long_t user_exception; |
| atomic_long_t set_context_option; |
| atomic_long_t check_context_retarget_intr; |
| atomic_long_t check_context_unload; |
| atomic_long_t tlb_dropin; |
| atomic_long_t tlb_preload_page; |
| atomic_long_t tlb_dropin_fail_no_asid; |
| atomic_long_t tlb_dropin_fail_upm; |
| atomic_long_t tlb_dropin_fail_invalid; |
| atomic_long_t tlb_dropin_fail_range_active; |
| atomic_long_t tlb_dropin_fail_idle; |
| atomic_long_t tlb_dropin_fail_fmm; |
| atomic_long_t tlb_dropin_fail_no_exception; |
| atomic_long_t tfh_stale_on_fault; |
| atomic_long_t mmu_invalidate_range; |
| atomic_long_t mmu_invalidate_page; |
| atomic_long_t flush_tlb; |
| atomic_long_t flush_tlb_gru; |
| atomic_long_t flush_tlb_gru_tgh; |
| atomic_long_t flush_tlb_gru_zero_asid; |
| |
| atomic_long_t copy_gpa; |
| atomic_long_t read_gpa; |
| |
| atomic_long_t mesq_receive; |
| atomic_long_t mesq_receive_none; |
| atomic_long_t mesq_send; |
| atomic_long_t mesq_send_failed; |
| atomic_long_t mesq_noop; |
| atomic_long_t mesq_send_unexpected_error; |
| atomic_long_t mesq_send_lb_overflow; |
| atomic_long_t mesq_send_qlimit_reached; |
| atomic_long_t mesq_send_amo_nacked; |
| atomic_long_t mesq_send_put_nacked; |
| atomic_long_t mesq_page_overflow; |
| atomic_long_t mesq_qf_locked; |
| atomic_long_t mesq_qf_noop_not_full; |
| atomic_long_t mesq_qf_switch_head_failed; |
| atomic_long_t mesq_qf_unexpected_error; |
| atomic_long_t mesq_noop_unexpected_error; |
| atomic_long_t mesq_noop_lb_overflow; |
| atomic_long_t mesq_noop_qlimit_reached; |
| atomic_long_t mesq_noop_amo_nacked; |
| atomic_long_t mesq_noop_put_nacked; |
| atomic_long_t mesq_noop_page_overflow; |
| |
| }; |
| |
| enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync, |
| cchop_deallocate, tfhop_write_only, tfhop_write_restart, |
| tghop_invalidate, mcsop_last}; |
| |
| struct mcs_op_statistic { |
| atomic_long_t count; |
| atomic_long_t total; |
| unsigned long max; |
| }; |
| |
| extern struct mcs_op_statistic mcs_op_statistics[mcsop_last]; |
| |
| #define OPT_DPRINT 1 |
| #define OPT_STATS 2 |
| |
| |
| #define IRQ_GRU 110 /* Starting IRQ number for interrupts */ |
| |
| /* Delay in jiffies between attempts to assign a GRU context */ |
| #define GRU_ASSIGN_DELAY ((HZ * 20) / 1000) |
| |
| /* |
| * If a process has it's context stolen, min delay in jiffies before trying to |
| * steal a context from another process. |
| */ |
| #define GRU_STEAL_DELAY ((HZ * 200) / 1000) |
| |
| #define STAT(id) do { \ |
| if (gru_options & OPT_STATS) \ |
| atomic_long_inc(&gru_stats.id); \ |
| } while (0) |
| |
| #ifdef CONFIG_SGI_GRU_DEBUG |
| #define gru_dbg(dev, fmt, x...) \ |
| do { \ |
| if (gru_options & OPT_DPRINT) \ |
| printk(KERN_DEBUG "GRU:%d %s: " fmt, smp_processor_id(), __func__, x);\ |
| } while (0) |
| #else |
| #define gru_dbg(x...) |
| #endif |
| |
| /*----------------------------------------------------------------------------- |
| * ASID management |
| */ |
| #define MAX_ASID 0xfffff0 |
| #define MIN_ASID 8 |
| #define ASID_INC 8 /* number of regions */ |
| |
| /* Generate a GRU asid value from a GRU base asid & a virtual address. */ |
| #define VADDR_HI_BIT 64 |
| #define GRUREGION(addr) ((addr) >> (VADDR_HI_BIT - 3) & 3) |
| #define GRUASID(asid, addr) ((asid) + GRUREGION(addr)) |
| |
| /*------------------------------------------------------------------------------ |
| * File & VMS Tables |
| */ |
| |
| struct gru_state; |
| |
| /* |
| * This structure is pointed to from the mmstruct via the notifier pointer. |
| * There is one of these per address space. |
| */ |
| struct gru_mm_tracker { /* pack to reduce size */ |
| unsigned int mt_asid_gen:24; /* ASID wrap count */ |
| unsigned int mt_asid:24; /* current base ASID for gru */ |
| unsigned short mt_ctxbitmap:16;/* bitmap of contexts using |
| asid */ |
| } __attribute__ ((packed)); |
| |
| struct gru_mm_struct { |
| struct mmu_notifier ms_notifier; |
| spinlock_t ms_asid_lock; /* protects ASID assignment */ |
| atomic_t ms_range_active;/* num range_invals active */ |
| wait_queue_head_t ms_wait_queue; |
| DECLARE_BITMAP(ms_asidmap, GRU_MAX_GRUS); |
| struct gru_mm_tracker ms_asids[GRU_MAX_GRUS]; |
| }; |
| |
| /* |
| * One of these structures is allocated when a GSEG is mmaped. The |
| * structure is pointed to by the vma->vm_private_data field in the vma struct. |
| */ |
| struct gru_vma_data { |
| spinlock_t vd_lock; /* Serialize access to vma */ |
| struct list_head vd_head; /* head of linked list of gts */ |
| long vd_user_options;/* misc user option flags */ |
| int vd_cbr_au_count; |
| int vd_dsr_au_count; |
| unsigned char vd_tlb_preload_count; |
| }; |
| |
| /* |
| * One of these is allocated for each thread accessing a mmaped GRU. A linked |
| * list of these structure is hung off the struct gru_vma_data in the mm_struct. |
| */ |
| struct gru_thread_state { |
| struct list_head ts_next; /* list - head at vma-private */ |
| struct mutex ts_ctxlock; /* load/unload CTX lock */ |
| struct mm_struct *ts_mm; /* mm currently mapped to |
| context */ |
| struct vm_area_struct *ts_vma; /* vma of GRU context */ |
| struct gru_state *ts_gru; /* GRU where the context is |
| loaded */ |
| struct gru_mm_struct *ts_gms; /* asid & ioproc struct */ |
| unsigned char ts_tlb_preload_count; /* TLB preload pages */ |
| unsigned long ts_cbr_map; /* map of allocated CBRs */ |
| unsigned long ts_dsr_map; /* map of allocated DATA |
| resources */ |
| unsigned long ts_steal_jiffies;/* jiffies when context last |
| stolen */ |
| long ts_user_options;/* misc user option flags */ |
| pid_t ts_tgid_owner; /* task that is using the |
| context - for migration */ |
| short ts_user_blade_id;/* user selected blade */ |
| char ts_user_chiplet_id;/* user selected chiplet */ |
| unsigned short ts_sizeavail; /* Pagesizes in use */ |
| int ts_tsid; /* thread that owns the |
| structure */ |
| int ts_tlb_int_select;/* target cpu if interrupts |
| enabled */ |
| int ts_ctxnum; /* context number where the |
| context is loaded */ |
| atomic_t ts_refcnt; /* reference count GTS */ |
| unsigned char ts_dsr_au_count;/* Number of DSR resources |
| required for contest */ |
| unsigned char ts_cbr_au_count;/* Number of CBR resources |
| required for contest */ |
| char ts_cch_req_slice;/* CCH packet slice */ |
| char ts_blade; /* If >= 0, migrate context if |
| ref from different blade */ |
| char ts_force_cch_reload; |
| char ts_cbr_idx[GRU_CBR_AU];/* CBR numbers of each |
| allocated CB */ |
| int ts_data_valid; /* Indicates if ts_gdata has |
| valid data */ |
| struct gru_gseg_statistics ustats; /* User statistics */ |
| unsigned long ts_gdata[0]; /* save area for GRU data (CB, |
| DS, CBE) */ |
| }; |
| |
| /* |
| * Threaded programs actually allocate an array of GSEGs when a context is |
| * created. Each thread uses a separate GSEG. TSID is the index into the GSEG |
| * array. |
| */ |
| #define TSID(a, v) (((a) - (v)->vm_start) / GRU_GSEG_PAGESIZE) |
| #define UGRUADDR(gts) ((gts)->ts_vma->vm_start + \ |
| (gts)->ts_tsid * GRU_GSEG_PAGESIZE) |
| |
| #define NULLCTX (-1) /* if context not loaded into GRU */ |
| |
| /*----------------------------------------------------------------------------- |
| * GRU State Tables |
| */ |
| |
| /* |
| * One of these exists for each GRU chiplet. |
| */ |
| struct gru_state { |
| struct gru_blade_state *gs_blade; /* GRU state for entire |
| blade */ |
| unsigned long gs_gru_base_paddr; /* Physical address of |
| gru segments (64) */ |
| void *gs_gru_base_vaddr; /* Virtual address of |
| gru segments (64) */ |
| unsigned short gs_gid; /* unique GRU number */ |
| unsigned short gs_blade_id; /* blade of GRU */ |
| unsigned char gs_chiplet_id; /* blade chiplet of GRU */ |
| unsigned char gs_tgh_local_shift; /* used to pick TGH for |
| local flush */ |
| unsigned char gs_tgh_first_remote; /* starting TGH# for |
| remote flush */ |
| spinlock_t gs_asid_lock; /* lock used for |
| assigning asids */ |
| spinlock_t gs_lock; /* lock used for |
| assigning contexts */ |
| |
| /* -- the following are protected by the gs_asid_lock spinlock ---- */ |
| unsigned int gs_asid; /* Next availe ASID */ |
| unsigned int gs_asid_limit; /* Limit of available |
| ASIDs */ |
| unsigned int gs_asid_gen; /* asid generation. |
| Inc on wrap */ |
| |
| /* --- the following fields are protected by the gs_lock spinlock --- */ |
| unsigned long gs_context_map; /* bitmap to manage |
| contexts in use */ |
| unsigned long gs_cbr_map; /* bitmap to manage CB |
| resources */ |
| unsigned long gs_dsr_map; /* bitmap used to manage |
| DATA resources */ |
| unsigned int gs_reserved_cbrs; /* Number of kernel- |
| reserved cbrs */ |
| unsigned int gs_reserved_dsr_bytes; /* Bytes of kernel- |
| reserved dsrs */ |
| unsigned short gs_active_contexts; /* number of contexts |
| in use */ |
| struct gru_thread_state *gs_gts[GRU_NUM_CCH]; /* GTS currently using |
| the context */ |
| int gs_irq[GRU_NUM_TFM]; /* Interrupt irqs */ |
| }; |
| |
| /* |
| * This structure contains the GRU state for all the GRUs on a blade. |
| */ |
| struct gru_blade_state { |
| void *kernel_cb; /* First kernel |
| reserved cb */ |
| void *kernel_dsr; /* First kernel |
| reserved DSR */ |
| struct rw_semaphore bs_kgts_sema; /* lock for kgts */ |
| struct gru_thread_state *bs_kgts; /* GTS for kernel use */ |
| |
| /* ---- the following are used for managing kernel async GRU CBRs --- */ |
| int bs_async_dsr_bytes; /* DSRs for async */ |
| int bs_async_cbrs; /* CBRs AU for async */ |
| struct completion *bs_async_wq; |
| |
| /* ---- the following are protected by the bs_lock spinlock ---- */ |
| spinlock_t bs_lock; /* lock used for |
| stealing contexts */ |
| int bs_lru_ctxnum; /* STEAL - last context |
| stolen */ |
| struct gru_state *bs_lru_gru; /* STEAL - last gru |
| stolen */ |
| |
| struct gru_state bs_grus[GRU_CHIPLETS_PER_BLADE]; |
| }; |
| |
| /*----------------------------------------------------------------------------- |
| * Address Primitives |
| */ |
| #define get_tfm_for_cpu(g, c) \ |
| ((struct gru_tlb_fault_map *)get_tfm((g)->gs_gru_base_vaddr, (c))) |
| #define get_tfh_by_index(g, i) \ |
| ((struct gru_tlb_fault_handle *)get_tfh((g)->gs_gru_base_vaddr, (i))) |
| #define get_tgh_by_index(g, i) \ |
| ((struct gru_tlb_global_handle *)get_tgh((g)->gs_gru_base_vaddr, (i))) |
| #define get_cbe_by_index(g, i) \ |
| ((struct gru_control_block_extended *)get_cbe((g)->gs_gru_base_vaddr,\ |
| (i))) |
| |
| /*----------------------------------------------------------------------------- |
| * Useful Macros |
| */ |
| |
| /* Given a blade# & chiplet#, get a pointer to the GRU */ |
| #define get_gru(b, c) (&gru_base[b]->bs_grus[c]) |
| |
| /* Number of bytes to save/restore when unloading/loading GRU contexts */ |
| #define DSR_BYTES(dsr) ((dsr) * GRU_DSR_AU_BYTES) |
| #define CBR_BYTES(cbr) ((cbr) * GRU_HANDLE_BYTES * GRU_CBR_AU_SIZE * 2) |
| |
| /* Convert a user CB number to the actual CBRNUM */ |
| #define thread_cbr_number(gts, n) ((gts)->ts_cbr_idx[(n) / GRU_CBR_AU_SIZE] \ |
| * GRU_CBR_AU_SIZE + (n) % GRU_CBR_AU_SIZE) |
| |
| /* Convert a gid to a pointer to the GRU */ |
| #define GID_TO_GRU(gid) \ |
| (gru_base[(gid) / GRU_CHIPLETS_PER_BLADE] ? \ |
| (&gru_base[(gid) / GRU_CHIPLETS_PER_BLADE]-> \ |
| bs_grus[(gid) % GRU_CHIPLETS_PER_BLADE]) : \ |
| NULL) |
| |
| /* Scan all active GRUs in a GRU bitmap */ |
| #define for_each_gru_in_bitmap(gid, map) \ |
| for_each_set_bit((gid), (map), GRU_MAX_GRUS) |
| |
| /* Scan all active GRUs on a specific blade */ |
| #define for_each_gru_on_blade(gru, nid, i) \ |
| for ((gru) = gru_base[nid]->bs_grus, (i) = 0; \ |
| (i) < GRU_CHIPLETS_PER_BLADE; \ |
| (i)++, (gru)++) |
| |
| /* Scan all GRUs */ |
| #define foreach_gid(gid) \ |
| for ((gid) = 0; (gid) < gru_max_gids; (gid)++) |
| |
| /* Scan all active GTSs on a gru. Note: must hold ss_lock to use this macro. */ |
| #define for_each_gts_on_gru(gts, gru, ctxnum) \ |
| for ((ctxnum) = 0; (ctxnum) < GRU_NUM_CCH; (ctxnum)++) \ |
| if (((gts) = (gru)->gs_gts[ctxnum])) |
| |
| /* Scan each CBR whose bit is set in a TFM (or copy of) */ |
| #define for_each_cbr_in_tfm(i, map) \ |
| for_each_set_bit((i), (map), GRU_NUM_CBE) |
| |
| /* Scan each CBR in a CBR bitmap. Note: multiple CBRs in an allocation unit */ |
| #define for_each_cbr_in_allocation_map(i, map, k) \ |
| for_each_set_bit((k), (map), GRU_CBR_AU) \ |
| for ((i) = (k)*GRU_CBR_AU_SIZE; \ |
| (i) < ((k) + 1) * GRU_CBR_AU_SIZE; (i)++) |
| |
| /* Scan each DSR in a DSR bitmap. Note: multiple DSRs in an allocation unit */ |
| #define for_each_dsr_in_allocation_map(i, map, k) \ |
| for_each_set_bit((k), (const unsigned long *)(map), GRU_DSR_AU) \ |
| for ((i) = (k) * GRU_DSR_AU_CL; \ |
| (i) < ((k) + 1) * GRU_DSR_AU_CL; (i)++) |
| |
| #define gseg_physical_address(gru, ctxnum) \ |
| ((gru)->gs_gru_base_paddr + ctxnum * GRU_GSEG_STRIDE) |
| #define gseg_virtual_address(gru, ctxnum) \ |
| ((gru)->gs_gru_base_vaddr + ctxnum * GRU_GSEG_STRIDE) |
| |
| /*----------------------------------------------------------------------------- |
| * Lock / Unlock GRU handles |
| * Use the "delresp" bit in the handle as a "lock" bit. |
| */ |
| |
| /* Lock hierarchy checking enabled only in emulator */ |
| |
| /* 0 = lock failed, 1 = locked */ |
| static inline int __trylock_handle(void *h) |
| { |
| return !test_and_set_bit(1, h); |
| } |
| |
| static inline void __lock_handle(void *h) |
| { |
| while (test_and_set_bit(1, h)) |
| cpu_relax(); |
| } |
| |
| static inline void __unlock_handle(void *h) |
| { |
| clear_bit(1, h); |
| } |
| |
| static inline int trylock_cch_handle(struct gru_context_configuration_handle *cch) |
| { |
| return __trylock_handle(cch); |
| } |
| |
| static inline void lock_cch_handle(struct gru_context_configuration_handle *cch) |
| { |
| __lock_handle(cch); |
| } |
| |
| static inline void unlock_cch_handle(struct gru_context_configuration_handle |
| *cch) |
| { |
| __unlock_handle(cch); |
| } |
| |
| static inline void lock_tgh_handle(struct gru_tlb_global_handle *tgh) |
| { |
| __lock_handle(tgh); |
| } |
| |
| static inline void unlock_tgh_handle(struct gru_tlb_global_handle *tgh) |
| { |
| __unlock_handle(tgh); |
| } |
| |
| static inline int is_kernel_context(struct gru_thread_state *gts) |
| { |
| return !gts->ts_mm; |
| } |
| |
| /* |
| * The following are for Nehelem-EX. A more general scheme is needed for |
| * future processors. |
| */ |
| #define UV_MAX_INT_CORES 8 |
| #define uv_cpu_socket_number(p) ((cpu_physical_id(p) >> 5) & 1) |
| #define uv_cpu_ht_number(p) (cpu_physical_id(p) & 1) |
| #define uv_cpu_core_number(p) (((cpu_physical_id(p) >> 2) & 4) | \ |
| ((cpu_physical_id(p) >> 1) & 3)) |
| /*----------------------------------------------------------------------------- |
| * Function prototypes & externs |
| */ |
| struct gru_unload_context_req; |
| |
| extern const struct vm_operations_struct gru_vm_ops; |
| extern struct device *grudev; |
| |
| extern struct gru_vma_data *gru_alloc_vma_data(struct vm_area_struct *vma, |
| int tsid); |
| extern struct gru_thread_state *gru_find_thread_state(struct vm_area_struct |
| *vma, int tsid); |
| extern struct gru_thread_state *gru_alloc_thread_state(struct vm_area_struct |
| *vma, int tsid); |
| extern struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts); |
| extern void gru_load_context(struct gru_thread_state *gts); |
| extern void gru_steal_context(struct gru_thread_state *gts); |
| extern void gru_unload_context(struct gru_thread_state *gts, int savestate); |
| extern int gru_update_cch(struct gru_thread_state *gts); |
| extern void gts_drop(struct gru_thread_state *gts); |
| extern void gru_tgh_flush_init(struct gru_state *gru); |
| extern int gru_kservices_init(void); |
| extern void gru_kservices_exit(void); |
| extern irqreturn_t gru0_intr(int irq, void *dev_id); |
| extern irqreturn_t gru1_intr(int irq, void *dev_id); |
| extern irqreturn_t gru_intr_mblade(int irq, void *dev_id); |
| extern int gru_dump_chiplet_request(unsigned long arg); |
| extern long gru_get_gseg_statistics(unsigned long arg); |
| extern int gru_handle_user_call_os(unsigned long address); |
| extern int gru_user_flush_tlb(unsigned long arg); |
| extern int gru_user_unload_context(unsigned long arg); |
| extern int gru_get_exception_detail(unsigned long arg); |
| extern int gru_set_context_option(unsigned long address); |
| extern void gru_check_context_placement(struct gru_thread_state *gts); |
| extern int gru_cpu_fault_map_id(void); |
| extern struct vm_area_struct *gru_find_vma(unsigned long vaddr); |
| extern void gru_flush_all_tlb(struct gru_state *gru); |
| extern int gru_proc_init(void); |
| extern void gru_proc_exit(void); |
| |
| extern struct gru_thread_state *gru_alloc_gts(struct vm_area_struct *vma, |
| int cbr_au_count, int dsr_au_count, |
| unsigned char tlb_preload_count, int options, int tsid); |
| extern unsigned long gru_reserve_cb_resources(struct gru_state *gru, |
| int cbr_au_count, char *cbmap); |
| extern unsigned long gru_reserve_ds_resources(struct gru_state *gru, |
| int dsr_au_count, char *dsmap); |
| extern vm_fault_t gru_fault(struct vm_fault *vmf); |
| extern struct gru_mm_struct *gru_register_mmu_notifier(void); |
| extern void gru_drop_mmu_notifier(struct gru_mm_struct *gms); |
| |
| extern int gru_ktest(unsigned long arg); |
| extern void gru_flush_tlb_range(struct gru_mm_struct *gms, unsigned long start, |
| unsigned long len); |
| |
| extern unsigned long gru_options; |
| |
| #endif /* __GRUTABLES_H__ */ |