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    Subject[patch 03/13] GRU Driver V2 - driver internal header files
    This patch contains header files internal to the GRU driver.


    Signed-off-by: Jack Steiner <steiner@sgi.com>

    ---
    drivers/misc/sgi-gru/gru.h | 67 ++++
    drivers/misc/sgi-gru/grulib.h | 97 ++++++
    drivers/misc/sgi-gru/grutables.h | 545 +++++++++++++++++++++++++++++++++++++++
    3 files changed, 709 insertions(+)

    Index: linux/drivers/misc/sgi-gru/gru.h
    ===================================================================
    --- /dev/null 1970-01-01 00:00:00.000000000 +0000
    +++ linux/drivers/misc/sgi-gru/gru.h 2008-06-14 18:51:47.390812836 -0500
    @@ -0,0 +1,67 @@
    +/*
    + * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
    + *
    + * This program is free software; you can redistribute it and/or modify
    + * it under the terms of the GNU Lesser General Public License as published by
    + * the Free Software Foundation; either version 2.1 of the License, or
    + * (at your option) any later version.
    + *
    + * This program is distributed in the hope that it will be useful,
    + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    + * GNU Lesser General Public License for more details.
    + *
    + * You should have received a copy of the GNU Lesser General Public License
    + * along with this program; if not, write to the Free Software
    + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    + */
    +
    +#ifndef __GRU_H__
    +#define __GRU_H__
    +
    +/*
    + * GRU architectural definitions
    + */
    +#define GRU_CACHE_LINE_BYTES 64
    +#define GRU_HANDLE_STRIDE 256
    +#define GRU_CB_BASE 0
    +#define GRU_DS_BASE 0x20000
    +
    +/*
    + * Size used to map GRU GSeg
    + */
    +#if defined CONFIG_IA64
    +#define GRU_GSEG_PAGESIZE (256 * 1024UL)
    +#elif defined CONFIG_X86_64
    +#define GRU_GSEG_PAGESIZE (256 * 1024UL) /* ZZZ 2MB ??? */
    +#else
    +#error "Unsupported architecture"
    +#endif
    +
    +/*
    + * Structure for obtaining GRU resource information
    + */
    +struct gru_chiplet_info {
    + int node;
    + int chiplet;
    + int blade;
    + int total_dsr_bytes;
    + int total_cbr;
    + int total_user_dsr_bytes;
    + int total_user_cbr;
    + int free_user_dsr_bytes;
    + int free_user_cbr;
    +};
    +
    +/* Flags for GRU options on the gru_create_context() call */
    +/* Select one of the follow 4 options to specify how TLB misses are handled */
    +#define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */
    +#define GRU_OPT_MISS_USER_POLL 0x0001 /* User will poll CB for faults */
    +#define GRU_OPT_MISS_FMM_INTR 0x0002 /* Send interrupt to cpu to
    + handle fault */
    +#define GRU_OPT_MISS_FMM_POLL 0x0003 /* Use system polling thread */
    +#define GRU_OPT_MISS_MASK 0x0003 /* Mask for TLB MISS option */
    +
    +
    +
    +#endif /* __GRU_H__ */
    Index: linux/drivers/misc/sgi-gru/grulib.h
    ===================================================================
    --- /dev/null 1970-01-01 00:00:00.000000000 +0000
    +++ linux/drivers/misc/sgi-gru/grulib.h 2008-06-14 18:51:47.466822285 -0500
    @@ -0,0 +1,97 @@
    +/*
    + * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
    + *
    + * This program is free software; you can redistribute it and/or modify
    + * it under the terms of the GNU Lesser General Public License as published by
    + * the Free Software Foundation; either version 2.1 of the License, or
    + * (at your option) any later version.
    + *
    + * This program is distributed in the hope that it will be useful,
    + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    + * GNU Lesser General Public License for more details.
    + *
    + * You should have received a copy of the GNU Lesser General Public License
    + * along with this program; if not, write to the Free Software
    + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    + */
    +
    +#ifndef __GRULIB_H__
    +#define __GRULIB_H__
    +
    +#define GRU_BASENAME "gru"
    +#define GRU_FULLNAME "/dev/gru"
    +#define GRU_IOCTL_NUM 'G'
    +
    +/*
    + * Maximum number of GRU segments that a user can have open
    + * ZZZ temp - set high for testing. Revisit.
    + */
    +#define GRU_MAX_OPEN_CONTEXTS 32
    +
    +/* Set Number of Request Blocks */
    +#define GRU_CREATE_CONTEXT _IOWR(GRU_IOCTL_NUM, 1, void *)
    +
    +/* Register task as using the slice */
    +#define GRU_SET_TASK_SLICE _IOWR(GRU_IOCTL_NUM, 5, void *)
    +
    +/* Fetch exception detail */
    +#define GRU_USER_GET_EXCEPTION_DETAIL _IOWR(GRU_IOCTL_NUM, 6, void *)
    +
    +/* For user call_os handling - normally a TLB fault */
    +#define GRU_USER_CALL_OS _IOWR(GRU_IOCTL_NUM, 8, void *)
    +
    +/* For user unload context */
    +#define GRU_USER_UNLOAD_CONTEXT _IOWR(GRU_IOCTL_NUM, 9, void *)
    +
    +/* For fetching GRU chiplet status */
    +#define GRU_GET_CHIPLET_STATUS _IOWR(GRU_IOCTL_NUM, 10, void *)
    +
    +/* For user TLB flushing (primarily for tests) */
    +#define GRU_USER_FLUSH_TLB _IOWR(GRU_IOCTL_NUM, 50, void *)
    +
    +/* Get some config options (primarily for tests & emulator) */
    +#define GRU_GET_CONFIG_INFO _IOWR(GRU_IOCTL_NUM, 51, void *)
    +
    +#define CONTEXT_WINDOW_BYTES(th) (GRU_GSEG_PAGESIZE * (th))
    +#define THREAD_POINTER(p, th) (p + GRU_GSEG_PAGESIZE * (th))
    +
    +/*
    + * Structure used to pass TLB flush parameters to the driver
    + */
    +struct gru_create_context_req {
    + unsigned long gseg;
    + unsigned int data_segment_bytes;
    + unsigned int control_blocks;
    + unsigned int maximum_thread_count;
    + unsigned int options;
    +};
    +
    +/*
    + * Structure used to pass unload context parameters to the driver
    + */
    +struct gru_unload_context_req {
    + unsigned long gseg;
    +};
    +
    +/*
    + * Structure used to pass TLB flush parameters to the driver
    + */
    +struct gru_flush_tlb_req {
    + unsigned long gseg;
    + unsigned long vaddr;
    + size_t len;
    +};
    +
    +/*
    + * GRU configuration info (temp - for testing)
    + */
    +struct gru_config_info {
    + int cpus;
    + int blades;
    + int nodes;
    + int chiplets;
    + int fill[16];
    +};
    +
    +#endif /* __GRULIB_H__ */
    Index: linux/drivers/misc/sgi-gru/grutables.h
    ===================================================================
    --- /dev/null 1970-01-01 00:00:00.000000000 +0000
    +++ linux/drivers/misc/sgi-gru/grutables.h 2008-06-14 18:51:47.518828750 -0500
    @@ -0,0 +1,545 @@
    +/*
    + * SN Platform GRU Driver
    + *
    + * GRU DRIVER TABLES, MACROS, externs, etc
    + *
    + * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
    + *
    + * This program is free software; you can redistribute it and/or modify
    + * it under the terms of the GNU General Public License as published by
    + * the Free Software Foundation; either version 2 of the License, or
    + * (at your option) any later version.
    + *
    + * This program is distributed in the hope that it will be useful,
    + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    + * GNU General Public License for more details.
    + *
    + * You should have received a copy of the GNU General Public License
    + * along with this program; if not, write to the Free Software
    + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    + */
    +
    +#ifndef __GRUTABLES_H__
    +#define __GRUTABLES_H__
    +
    +/*
    + * 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 "gru.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;
    +
    +#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 "0.80"
    +
    +/*
    + * 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 vdata_double_alloc;
    + 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_context;
    + atomic_long_t unload_context;
    + atomic_long_t steal_context;
    + atomic_long_t steal_context_failed;
    + atomic_long_t nopfn;
    + atomic_long_t break_cow;
    + 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 call_os;
    + atomic_long_t call_os_check_for_bug;
    + 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_task_slice;
    + atomic_long_t migrate_check;
    + atomic_long_t migrated_retarget;
    + atomic_long_t migrated_unload;
    + atomic_long_t migrated_unload_delay;
    + atomic_long_t migrated_nopfn_retarget;
    + atomic_long_t migrated_nopfn_unload;
    + atomic_long_t tlb_dropin;
    + 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 mmu_invalidate_range;
    + atomic_long_t mmu_invalidate_page;
    + atomic_long_t mmu_clear_flush_young;
    + 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 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_qf_not_full;
    + 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;
    +
    +};
    +
    +#define OPT_DPRINT 1
    +#define OPT_STATS 2
    +#define GRU_QUICKLOOK 4
    +
    +
    +#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 (options & OPT_STATS) \
    + atomic_long_inc(&gru_stats.id); \
    + } while (0)
    +
    +#ifdef CONFIG_SGI_GRU_DEBUG
    +#define gru_dbg(dev, fmt, x...) \
    + do { \
    + if (options & OPT_DPRINT) \
    + dev_dbg(dev, "%s: " fmt, __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. */
    +#if defined CONFIG_IA64
    +#define VADDR_HI_BIT 64
    +#define GRUREGION(addr) ((addr) >> (VADDR_HI_BIT - 3) & 3)
    +#elif defined __x86_64
    +#define VADDR_HI_BIT 48
    +#define GRUREGION(addr) (0) /* ZZZ could do better */
    +#else
    +#error "Unsupported architecture"
    +#endif
    +#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 {
    + unsigned int mt_asid_gen; /* ASID wrap count */
    + int mt_asid; /* current base ASID for gru */
    + unsigned short mt_ctxbitmap; /* bitmap of contexts using
    + asid */
    +};
    +
    +struct gru_mm_struct {
    + struct mmu_notifier ms_notifier;
    + atomic_t ms_refcnt;
    + spinlock_t ms_asid_lock; /* protects ASID assignment */
    + atomic_t ms_range_active;/* num range_invals active */
    + char ms_released;
    + 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;
    +};
    +
    +/*
    + * 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 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 */
    + 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_force_unload;/* force context to be unloaded
    + after migration */
    + char ts_cbr_idx[GRU_CBR_AU];/* CBR numbers of each
    + allocated CB */
    + 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 char gs_gid; /* unique GRU number */
    + unsigned char gs_tgh_local_shift; /* used to pick TGH for
    + local flush */
    + unsigned char gs_tgh_first_remote; /* starting TGH# for
    + remote flush */
    + unsigned short gs_blade_id; /* blade of GRU */
    + 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 */
    +};
    +
    +/*
    + * 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 */
    + /* ---- 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 ((gid) = find_first_bit((map), GRU_MAX_GRUS); (gid) < GRU_MAX_GRUS;\
    + (gid)++, (gid) = find_next_bit((map), GRU_MAX_GRUS, (gid)))
    +
    +/* 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 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 ((i) = find_first_bit(map, GRU_NUM_CBE); \
    + (i) < GRU_NUM_CBE; \
    + (i)++, (i) = find_next_bit(map, GRU_NUM_CBE, i))
    +
    +/* 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 ((k) = find_first_bit(map, GRU_CBR_AU); (k) < GRU_CBR_AU; \
    + (k) = find_next_bit(map, GRU_CBR_AU, (k) + 1)) \
    + 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 ((k) = find_first_bit((const unsigned long *)map, GRU_DSR_AU);\
    + (k) < GRU_DSR_AU; \
    + (k) = find_next_bit((const unsigned long *)map, \
    + GRU_DSR_AU, (k) + 1)) \
    + 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 */
    +
    +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 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);
    +}
    +
    +/*-----------------------------------------------------------------------------
    + * Function prototypes & externs
    + */
    +struct gru_unload_context_req;
    +
    +extern 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 void gru_unload_context(struct gru_thread_state *gts, int savestate);
    +extern void gts_drop(struct gru_thread_state *gts);
    +extern void gru_tgh_flush_init(struct gru_state *gru);
    +extern int gru_kservices_init(struct gru_state *gru);
    +extern irqreturn_t gru_intr(int irq, void *dev_id);
    +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_task_slice(long address);
    +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 unsigned long reserve_gru_cb_resources(struct gru_state *gru,
    + int cbr_au_count, char *cbmap);
    +extern unsigned long reserve_gru_ds_resources(struct gru_state *gru,
    + int dsr_au_count, char *dsmap);
    +extern int gru_fault(struct vm_area_struct *, 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 void gru_flush_tlb_range(struct gru_mm_struct *gms, unsigned long start,
    + unsigned long len);
    +
    +extern unsigned long options;
    +
    +#endif /* __GRUTABLES_H__ */
    --


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