3a7d555bfc
This patch detects the existence of an uncached physical AMO address setup
by EFI's XPBOOT (SGI) and converts it to an uncached virtual AMO address.
Depends on a patch submitted on 23 March 2005 with the subject of:
[PATCH 2/3] SGI Altix cross partition functionality (2nd revision)
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
250 lines
8.1 KiB
C
250 lines
8.1 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (c) 1992-1999,2001-2004 Silicon Graphics, Inc. All rights reserved.
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*/
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#ifndef _ASM_IA64_SN_ADDRS_H
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#define _ASM_IA64_SN_ADDRS_H
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#include <asm/percpu.h>
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#include <asm/sn/types.h>
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#include <asm/sn/arch.h>
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#include <asm/sn/pda.h>
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/*
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* Memory/SHUB Address Format:
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* +-+---------+--+--------------+
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* |0| NASID |AS| NodeOffset |
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* +-+---------+--+--------------+
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*
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* NASID: (low NASID bit is 0) Memory and SHUB MMRs
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* AS: 2-bit Address Space Identifier. Used only if low NASID bit is 0
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* 00: Local Resources and MMR space
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* Top bit of NodeOffset
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* 0: Local resources space
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* node id:
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* 0: IA64/NT compatibility space
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* 2: Local MMR Space
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* 4: Local memory, regardless of local node id
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* 1: Global MMR space
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* 01: GET space.
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* 10: AMO space.
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* 11: Cacheable memory space.
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*
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* NodeOffset: byte offset
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*
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*
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* TIO address format:
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* +-+----------+--+--------------+
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* |0| NASID |AS| Nodeoffset |
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* +-+----------+--+--------------+
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*
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* NASID: (low NASID bit is 1) TIO
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* AS: 2-bit Chiplet Identifier
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* 00: TIO LB (Indicates TIO MMR access.)
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* 01: TIO ICE (indicates coretalk space access.)
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*
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* NodeOffset: top bit must be set.
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*
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*
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* Note that in both of the above address formats, the low
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* NASID bit indicates if the reference is to the SHUB or TIO MMRs.
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*/
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/*
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* Define basic shift & mask constants for manipulating NASIDs and AS values.
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*/
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#define NASID_BITMASK (sn_hub_info->nasid_bitmask)
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#define NASID_SHIFT (sn_hub_info->nasid_shift)
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#define AS_SHIFT (sn_hub_info->as_shift)
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#define AS_BITMASK 0x3UL
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#define NASID_MASK ((u64)NASID_BITMASK << NASID_SHIFT)
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#define AS_MASK ((u64)AS_BITMASK << AS_SHIFT)
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#define REGION_BITS 0xe000000000000000UL
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/*
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* AS values. These are the same on both SHUB1 & SHUB2.
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*/
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#define AS_GET_VAL 1UL
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#define AS_AMO_VAL 2UL
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#define AS_CAC_VAL 3UL
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#define AS_GET_SPACE (AS_GET_VAL << AS_SHIFT)
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#define AS_AMO_SPACE (AS_AMO_VAL << AS_SHIFT)
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#define AS_CAC_SPACE (AS_CAC_VAL << AS_SHIFT)
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/*
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* Base addresses for various address ranges.
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*/
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#define CACHED 0xe000000000000000UL
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#define UNCACHED 0xc000000000000000UL
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#define UNCACHED_PHYS 0x8000000000000000UL
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/*
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* Virtual Mode Local & Global MMR space.
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*/
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#define SH1_LOCAL_MMR_OFFSET 0x8000000000UL
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#define SH2_LOCAL_MMR_OFFSET 0x0200000000UL
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#define LOCAL_MMR_OFFSET (is_shub2() ? SH2_LOCAL_MMR_OFFSET : SH1_LOCAL_MMR_OFFSET)
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#define LOCAL_MMR_SPACE (UNCACHED | LOCAL_MMR_OFFSET)
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#define LOCAL_PHYS_MMR_SPACE (UNCACHED_PHYS | LOCAL_MMR_OFFSET)
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#define SH1_GLOBAL_MMR_OFFSET 0x0800000000UL
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#define SH2_GLOBAL_MMR_OFFSET 0x0300000000UL
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#define GLOBAL_MMR_OFFSET (is_shub2() ? SH2_GLOBAL_MMR_OFFSET : SH1_GLOBAL_MMR_OFFSET)
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#define GLOBAL_MMR_SPACE (UNCACHED | GLOBAL_MMR_OFFSET)
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/*
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* Physical mode addresses
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*/
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#define GLOBAL_PHYS_MMR_SPACE (UNCACHED_PHYS | GLOBAL_MMR_OFFSET)
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/*
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* Clear region & AS bits.
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*/
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#define TO_PHYS_MASK (~(REGION_BITS | AS_MASK))
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/*
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* Misc NASID manipulation.
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*/
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#define NASID_SPACE(n) ((u64)(n) << NASID_SHIFT)
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#define REMOTE_ADDR(n,a) (NASID_SPACE(n) | (a))
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#define NODE_OFFSET(x) ((x) & (NODE_ADDRSPACE_SIZE - 1))
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#define NODE_ADDRSPACE_SIZE (1UL << AS_SHIFT)
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#define NASID_GET(x) (int) (((u64) (x) >> NASID_SHIFT) & NASID_BITMASK)
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#define LOCAL_MMR_ADDR(a) (LOCAL_MMR_SPACE | (a))
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#define GLOBAL_MMR_ADDR(n,a) (GLOBAL_MMR_SPACE | REMOTE_ADDR(n,a))
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#define GLOBAL_MMR_PHYS_ADDR(n,a) (GLOBAL_PHYS_MMR_SPACE | REMOTE_ADDR(n,a))
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#define GLOBAL_CAC_ADDR(n,a) (CAC_BASE | REMOTE_ADDR(n,a))
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#define CHANGE_NASID(n,x) ((void *)(((u64)(x) & ~NASID_MASK) | NASID_SPACE(n)))
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/* non-II mmr's start at top of big window space (4G) */
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#define BWIN_TOP 0x0000000100000000UL
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/*
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* general address defines
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*/
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#define CAC_BASE (CACHED | AS_CAC_SPACE)
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#define AMO_BASE (UNCACHED | AS_AMO_SPACE)
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#define AMO_PHYS_BASE (UNCACHED_PHYS | AS_AMO_SPACE)
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#define GET_BASE (CACHED | AS_GET_SPACE)
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/*
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* Convert Memory addresses between various addressing modes.
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*/
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#define TO_PHYS(x) (TO_PHYS_MASK & (x))
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#define TO_CAC(x) (CAC_BASE | TO_PHYS(x))
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#define TO_AMO(x) (AMO_BASE | TO_PHYS(x))
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#define TO_GET(x) (GET_BASE | TO_PHYS(x))
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/*
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* Covert from processor physical address to II/TIO physical address:
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* II - squeeze out the AS bits
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* TIO- requires a chiplet id in bits 38-39. For DMA to memory,
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* the chiplet id is zero. If we implement TIO-TIO dma, we might need
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* to insert a chiplet id into this macro. However, it is our belief
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* right now that this chiplet id will be ICE, which is also zero.
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* Nasid starts on bit 40.
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*/
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#define PHYS_TO_TIODMA(x) ( (((u64)(NASID_GET(x))) << 40) | NODE_OFFSET(x))
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#define PHYS_TO_DMA(x) ( (((u64)(x) & NASID_MASK) >> 2) | NODE_OFFSET(x))
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/*
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* Macros to test for address type.
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*/
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#define IS_AMO_ADDRESS(x) (((u64)(x) & (REGION_BITS | AS_MASK)) == AMO_BASE)
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#define IS_AMO_PHYS_ADDRESS(x) (((u64)(x) & (REGION_BITS | AS_MASK)) == AMO_PHYS_BASE)
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/*
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* The following definitions pertain to the IO special address
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* space. They define the location of the big and little windows
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* of any given node.
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*/
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#define BWIN_SIZE_BITS 29 /* big window size: 512M */
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#define TIO_BWIN_SIZE_BITS 30 /* big window size: 1G */
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#define NODE_SWIN_BASE(n, w) ((w == 0) ? NODE_BWIN_BASE((n), SWIN0_BIGWIN) \
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: RAW_NODE_SWIN_BASE(n, w))
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#define TIO_SWIN_BASE(n, w) (TIO_IO_BASE(n) + \
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((u64) (w) << TIO_SWIN_SIZE_BITS))
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#define NODE_IO_BASE(n) (GLOBAL_MMR_SPACE | NASID_SPACE(n))
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#define TIO_IO_BASE(n) (UNCACHED | NASID_SPACE(n))
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#define BWIN_SIZE (1UL << BWIN_SIZE_BITS)
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#define NODE_BWIN_BASE0(n) (NODE_IO_BASE(n) + BWIN_SIZE)
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#define NODE_BWIN_BASE(n, w) (NODE_BWIN_BASE0(n) + ((u64) (w) << BWIN_SIZE_BITS))
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#define RAW_NODE_SWIN_BASE(n, w) (NODE_IO_BASE(n) + ((u64) (w) << SWIN_SIZE_BITS))
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#define BWIN_WIDGET_MASK 0x7
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#define BWIN_WINDOWNUM(x) (((x) >> BWIN_SIZE_BITS) & BWIN_WIDGET_MASK)
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#define TIO_BWIN_WINDOW_SELECT_MASK 0x7
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#define TIO_BWIN_WINDOWNUM(x) (((x) >> TIO_BWIN_SIZE_BITS) & TIO_BWIN_WINDOW_SELECT_MASK)
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/*
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* The following definitions pertain to the IO special address
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* space. They define the location of the big and little windows
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* of any given node.
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*/
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#define SWIN_SIZE_BITS 24
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#define SWIN_WIDGET_MASK 0xF
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#define TIO_SWIN_SIZE_BITS 28
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#define TIO_SWIN_SIZE (1UL << TIO_SWIN_SIZE_BITS)
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#define TIO_SWIN_WIDGET_MASK 0x3
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/*
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* Convert smallwindow address to xtalk address.
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*
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* 'addr' can be physical or virtual address, but will be converted
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* to Xtalk address in the range 0 -> SWINZ_SIZEMASK
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*/
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#define SWIN_WIDGETNUM(x) (((x) >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
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#define TIO_SWIN_WIDGETNUM(x) (((x) >> TIO_SWIN_SIZE_BITS) & TIO_SWIN_WIDGET_MASK)
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/*
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* The following macros produce the correct base virtual address for
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* the hub registers. The REMOTE_HUB_* macro produce
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* the address for the specified hub's registers. The intent is
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* that the appropriate PI, MD, NI, or II register would be substituted
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* for x.
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*
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* WARNING:
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* When certain Hub chip workaround are defined, it's not sufficient
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* to dereference the *_HUB_ADDR() macros. You should instead use
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* HUB_L() and HUB_S() if you must deal with pointers to hub registers.
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* Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
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* They're always safe.
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*/
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#define REMOTE_HUB_ADDR(n,x) \
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((n & 1) ? \
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/* TIO: */ \
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((volatile u64 *)(GLOBAL_MMR_ADDR(n,x))) \
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: /* SHUB: */ \
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(((x) & BWIN_TOP) ? ((volatile u64 *)(GLOBAL_MMR_ADDR(n,x)))\
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: ((volatile u64 *)(NODE_SWIN_BASE(n,1) + 0x800000 + (x)))))
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#define HUB_L(x) (*((volatile typeof(*x) *)x))
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#define HUB_S(x,d) (*((volatile typeof(*x) *)x) = (d))
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#define REMOTE_HUB_L(n, a) HUB_L(REMOTE_HUB_ADDR((n), (a)))
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#define REMOTE_HUB_S(n, a, d) HUB_S(REMOTE_HUB_ADDR((n), (a)), (d))
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#endif /* _ASM_IA64_SN_ADDRS_H */
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