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-rw-r--r--include/asm-x86/uv/uv_hub.h354
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diff --git a/include/asm-x86/uv/uv_hub.h b/include/asm-x86/uv/uv_hub.h
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-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * SGI UV architectural definitions
- *
- * Copyright (C) 2007-2008 Silicon Graphics, Inc. All rights reserved.
- */
-
-#ifndef ASM_X86__UV__UV_HUB_H
-#define ASM_X86__UV__UV_HUB_H
-
-#include <linux/numa.h>
-#include <linux/percpu.h>
-#include <asm/types.h>
-#include <asm/percpu.h>
-
-
-/*
- * Addressing Terminology
- *
- * M - The low M bits of a physical address represent the offset
- * into the blade local memory. RAM memory on a blade is physically
- * contiguous (although various IO spaces may punch holes in
- * it)..
- *
- * N - Number of bits in the node portion of a socket physical
- * address.
- *
- * NASID - network ID of a router, Mbrick or Cbrick. Nasid values of
- * routers always have low bit of 1, C/MBricks have low bit
- * equal to 0. Most addressing macros that target UV hub chips
- * right shift the NASID by 1 to exclude the always-zero bit.
- * NASIDs contain up to 15 bits.
- *
- * GNODE - NASID right shifted by 1 bit. Most mmrs contain gnodes instead
- * of nasids.
- *
- * PNODE - the low N bits of the GNODE. The PNODE is the most useful variant
- * of the nasid for socket usage.
- *
- *
- * NumaLink Global Physical Address Format:
- * +--------------------------------+---------------------+
- * |00..000| GNODE | NodeOffset |
- * +--------------------------------+---------------------+
- * |<-------53 - M bits --->|<--------M bits ----->
- *
- * M - number of node offset bits (35 .. 40)
- *
- *
- * Memory/UV-HUB Processor Socket Address Format:
- * +----------------+---------------+---------------------+
- * |00..000000000000| PNODE | NodeOffset |
- * +----------------+---------------+---------------------+
- * <--- N bits --->|<--------M bits ----->
- *
- * M - number of node offset bits (35 .. 40)
- * N - number of PNODE bits (0 .. 10)
- *
- * Note: M + N cannot currently exceed 44 (x86_64) or 46 (IA64).
- * The actual values are configuration dependent and are set at
- * boot time. M & N values are set by the hardware/BIOS at boot.
- *
- *
- * APICID format
- * NOTE!!!!!! This is the current format of the APICID. However, code
- * should assume that this will change in the future. Use functions
- * in this file for all APICID bit manipulations and conversion.
- *
- * 1111110000000000
- * 5432109876543210
- * pppppppppplc0cch
- * sssssssssss
- *
- * p = pnode bits
- * l = socket number on board
- * c = core
- * h = hyperthread
- * s = bits that are in the SOCKET_ID CSR
- *
- * Note: Processor only supports 12 bits in the APICID register. The ACPI
- * tables hold all 16 bits. Software needs to be aware of this.
- *
- * Unless otherwise specified, all references to APICID refer to
- * the FULL value contained in ACPI tables, not the subset in the
- * processor APICID register.
- */
-
-
-/*
- * Maximum number of bricks in all partitions and in all coherency domains.
- * This is the total number of bricks accessible in the numalink fabric. It
- * includes all C & M bricks. Routers are NOT included.
- *
- * This value is also the value of the maximum number of non-router NASIDs
- * in the numalink fabric.
- *
- * NOTE: a brick may contain 1 or 2 OS nodes. Don't get these confused.
- */
-#define UV_MAX_NUMALINK_BLADES 16384
-
-/*
- * Maximum number of C/Mbricks within a software SSI (hardware may support
- * more).
- */
-#define UV_MAX_SSI_BLADES 256
-
-/*
- * The largest possible NASID of a C or M brick (+ 2)
- */
-#define UV_MAX_NASID_VALUE (UV_MAX_NUMALINK_NODES * 2)
-
-/*
- * The following defines attributes of the HUB chip. These attributes are
- * frequently referenced and are kept in the per-cpu data areas of each cpu.
- * They are kept together in a struct to minimize cache misses.
- */
-struct uv_hub_info_s {
- unsigned long global_mmr_base;
- unsigned long gpa_mask;
- unsigned long gnode_upper;
- unsigned long lowmem_remap_top;
- unsigned long lowmem_remap_base;
- unsigned short pnode;
- unsigned short pnode_mask;
- unsigned short coherency_domain_number;
- unsigned short numa_blade_id;
- unsigned char blade_processor_id;
- unsigned char m_val;
- unsigned char n_val;
-};
-DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
-#define uv_hub_info (&__get_cpu_var(__uv_hub_info))
-#define uv_cpu_hub_info(cpu) (&per_cpu(__uv_hub_info, cpu))
-
-/*
- * Local & Global MMR space macros.
- * Note: macros are intended to be used ONLY by inline functions
- * in this file - not by other kernel code.
- * n - NASID (full 15-bit global nasid)
- * g - GNODE (full 15-bit global nasid, right shifted 1)
- * p - PNODE (local part of nsids, right shifted 1)
- */
-#define UV_NASID_TO_PNODE(n) (((n) >> 1) & uv_hub_info->pnode_mask)
-#define UV_PNODE_TO_NASID(p) (((p) << 1) | uv_hub_info->gnode_upper)
-
-#define UV_LOCAL_MMR_BASE 0xf4000000UL
-#define UV_GLOBAL_MMR32_BASE 0xf8000000UL
-#define UV_GLOBAL_MMR64_BASE (uv_hub_info->global_mmr_base)
-#define UV_LOCAL_MMR_SIZE (64UL * 1024 * 1024)
-#define UV_GLOBAL_MMR32_SIZE (64UL * 1024 * 1024)
-
-#define UV_GLOBAL_MMR32_PNODE_SHIFT 15
-#define UV_GLOBAL_MMR64_PNODE_SHIFT 26
-
-#define UV_GLOBAL_MMR32_PNODE_BITS(p) ((p) << (UV_GLOBAL_MMR32_PNODE_SHIFT))
-
-#define UV_GLOBAL_MMR64_PNODE_BITS(p) \
- ((unsigned long)(p) << UV_GLOBAL_MMR64_PNODE_SHIFT)
-
-#define UV_APIC_PNODE_SHIFT 6
-
-/*
- * Macros for converting between kernel virtual addresses, socket local physical
- * addresses, and UV global physical addresses.
- * Note: use the standard __pa() & __va() macros for converting
- * between socket virtual and socket physical addresses.
- */
-
-/* socket phys RAM --> UV global physical address */
-static inline unsigned long uv_soc_phys_ram_to_gpa(unsigned long paddr)
-{
- if (paddr < uv_hub_info->lowmem_remap_top)
- paddr += uv_hub_info->lowmem_remap_base;
- return paddr | uv_hub_info->gnode_upper;
-}
-
-
-/* socket virtual --> UV global physical address */
-static inline unsigned long uv_gpa(void *v)
-{
- return __pa(v) | uv_hub_info->gnode_upper;
-}
-
-/* socket virtual --> UV global physical address */
-static inline void *uv_vgpa(void *v)
-{
- return (void *)uv_gpa(v);
-}
-
-/* UV global physical address --> socket virtual */
-static inline void *uv_va(unsigned long gpa)
-{
- return __va(gpa & uv_hub_info->gpa_mask);
-}
-
-/* pnode, offset --> socket virtual */
-static inline void *uv_pnode_offset_to_vaddr(int pnode, unsigned long offset)
-{
- return __va(((unsigned long)pnode << uv_hub_info->m_val) | offset);
-}
-
-
-/*
- * Extract a PNODE from an APICID (full apicid, not processor subset)
- */
-static inline int uv_apicid_to_pnode(int apicid)
-{
- return (apicid >> UV_APIC_PNODE_SHIFT);
-}
-
-/*
- * Access global MMRs using the low memory MMR32 space. This region supports
- * faster MMR access but not all MMRs are accessible in this space.
- */
-static inline unsigned long *uv_global_mmr32_address(int pnode,
- unsigned long offset)
-{
- return __va(UV_GLOBAL_MMR32_BASE |
- UV_GLOBAL_MMR32_PNODE_BITS(pnode) | offset);
-}
-
-static inline void uv_write_global_mmr32(int pnode, unsigned long offset,
- unsigned long val)
-{
- *uv_global_mmr32_address(pnode, offset) = val;
-}
-
-static inline unsigned long uv_read_global_mmr32(int pnode,
- unsigned long offset)
-{
- return *uv_global_mmr32_address(pnode, offset);
-}
-
-/*
- * Access Global MMR space using the MMR space located at the top of physical
- * memory.
- */
-static inline unsigned long *uv_global_mmr64_address(int pnode,
- unsigned long offset)
-{
- return __va(UV_GLOBAL_MMR64_BASE |
- UV_GLOBAL_MMR64_PNODE_BITS(pnode) | offset);
-}
-
-static inline void uv_write_global_mmr64(int pnode, unsigned long offset,
- unsigned long val)
-{
- *uv_global_mmr64_address(pnode, offset) = val;
-}
-
-static inline unsigned long uv_read_global_mmr64(int pnode,
- unsigned long offset)
-{
- return *uv_global_mmr64_address(pnode, offset);
-}
-
-/*
- * Access hub local MMRs. Faster than using global space but only local MMRs
- * are accessible.
- */
-static inline unsigned long *uv_local_mmr_address(unsigned long offset)
-{
- return __va(UV_LOCAL_MMR_BASE | offset);
-}
-
-static inline unsigned long uv_read_local_mmr(unsigned long offset)
-{
- return *uv_local_mmr_address(offset);
-}
-
-static inline void uv_write_local_mmr(unsigned long offset, unsigned long val)
-{
- *uv_local_mmr_address(offset) = val;
-}
-
-/*
- * Structures and definitions for converting between cpu, node, pnode, and blade
- * numbers.
- */
-struct uv_blade_info {
- unsigned short nr_possible_cpus;
- unsigned short nr_online_cpus;
- unsigned short pnode;
-};
-extern struct uv_blade_info *uv_blade_info;
-extern short *uv_node_to_blade;
-extern short *uv_cpu_to_blade;
-extern short uv_possible_blades;
-
-/* Blade-local cpu number of current cpu. Numbered 0 .. <# cpus on the blade> */
-static inline int uv_blade_processor_id(void)
-{
- return uv_hub_info->blade_processor_id;
-}
-
-/* Blade number of current cpu. Numnbered 0 .. <#blades -1> */
-static inline int uv_numa_blade_id(void)
-{
- return uv_hub_info->numa_blade_id;
-}
-
-/* Convert a cpu number to the the UV blade number */
-static inline int uv_cpu_to_blade_id(int cpu)
-{
- return uv_cpu_to_blade[cpu];
-}
-
-/* Convert linux node number to the UV blade number */
-static inline int uv_node_to_blade_id(int nid)
-{
- return uv_node_to_blade[nid];
-}
-
-/* Convert a blade id to the PNODE of the blade */
-static inline int uv_blade_to_pnode(int bid)
-{
- return uv_blade_info[bid].pnode;
-}
-
-/* Determine the number of possible cpus on a blade */
-static inline int uv_blade_nr_possible_cpus(int bid)
-{
- return uv_blade_info[bid].nr_possible_cpus;
-}
-
-/* Determine the number of online cpus on a blade */
-static inline int uv_blade_nr_online_cpus(int bid)
-{
- return uv_blade_info[bid].nr_online_cpus;
-}
-
-/* Convert a cpu id to the PNODE of the blade containing the cpu */
-static inline int uv_cpu_to_pnode(int cpu)
-{
- return uv_blade_info[uv_cpu_to_blade_id(cpu)].pnode;
-}
-
-/* Convert a linux node number to the PNODE of the blade */
-static inline int uv_node_to_pnode(int nid)
-{
- return uv_blade_info[uv_node_to_blade_id(nid)].pnode;
-}
-
-/* Maximum possible number of blades */
-static inline int uv_num_possible_blades(void)
-{
- return uv_possible_blades;
-}
-
-#endif /* ASM_X86__UV__UV_HUB_H */
-
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