Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 299 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/sn/addrs.h b/arch/ia64/include/asm/sn/addrs.h
new file mode 100644
index 000000000..e715c794b
--- /dev/null
+++ b/arch/ia64/include/asm/sn/addrs.h
@@ -0,0 +1,299 @@
+/*
+ * 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.
+ *
+ * Copyright (c) 1992-1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#ifndef _ASM_IA64_SN_ADDRS_H
+#define _ASM_IA64_SN_ADDRS_H
+
+#include <asm/percpu.h>
+#include <asm/sn/types.h>
+#include <asm/sn/arch.h>
+#include <asm/sn/pda.h>
+
+/*
+ *  Memory/SHUB Address Format:
+ *  +-+---------+--+--------------+
+ *  |0|  NASID  |AS| NodeOffset   |
+ *  +-+---------+--+--------------+
+ *
+ *  NASID: (low NASID bit is 0) Memory and SHUB MMRs
+ *   AS: 2-bit Address Space Identifier. Used only if low NASID bit is 0
+ *     00: Local Resources and MMR space
+ *           Top bit of NodeOffset
+ *               0: Local resources space
+ *                  node id:
+ *                        0: IA64/NT compatibility space
+ *                        2: Local MMR Space
+ *                        4: Local memory, regardless of local node id
+ *               1: Global MMR space
+ *     01: GET space.
+ *     10: AMO space.
+ *     11: Cacheable memory space.
+ *
+ *   NodeOffset: byte offset
+ *
+ *
+ *  TIO address format:
+ *  +-+----------+--+--------------+
+ *  |0|  NASID   |AS| Nodeoffset   |
+ *  +-+----------+--+--------------+
+ *
+ *  NASID: (low NASID bit is 1) TIO
+ *   AS: 2-bit Chiplet Identifier
+ *     00: TIO LB (Indicates TIO MMR access.)
+ *     01: TIO ICE (indicates coretalk space access.)
+ * 
+ *   NodeOffset: top bit must be set.
+ *
+ *
+ * Note that in both of the above address formats, the low
+ * NASID bit indicates if the reference is to the SHUB or TIO MMRs.
+ */
+
+
+/*
+ * Define basic shift & mask constants for manipulating NASIDs and AS values.
+ */
+#define NASID_BITMASK		(sn_hub_info->nasid_bitmask)
+#define NASID_SHIFT		(sn_hub_info->nasid_shift)
+#define AS_SHIFT		(sn_hub_info->as_shift)
+#define AS_BITMASK		0x3UL
+
+#define NASID_MASK              ((u64)NASID_BITMASK << NASID_SHIFT)
+#define AS_MASK			((u64)AS_BITMASK << AS_SHIFT)
+
+
+/*
+ * AS values. These are the same on both SHUB1 & SHUB2.
+ */
+#define AS_GET_VAL		1UL
+#define AS_AMO_VAL		2UL
+#define AS_CAC_VAL		3UL
+#define AS_GET_SPACE		(AS_GET_VAL << AS_SHIFT)
+#define AS_AMO_SPACE		(AS_AMO_VAL << AS_SHIFT)
+#define AS_CAC_SPACE		(AS_CAC_VAL << AS_SHIFT)
+
+
+/* 
+ * Virtual Mode Local & Global MMR space.  
+ */
+#define SH1_LOCAL_MMR_OFFSET	0x8000000000UL
+#define SH2_LOCAL_MMR_OFFSET	0x0200000000UL
+#define LOCAL_MMR_OFFSET	(is_shub2() ? SH2_LOCAL_MMR_OFFSET : SH1_LOCAL_MMR_OFFSET)
+#define LOCAL_MMR_SPACE		(__IA64_UNCACHED_OFFSET | LOCAL_MMR_OFFSET)
+#define LOCAL_PHYS_MMR_SPACE	(RGN_BASE(RGN_HPAGE) | LOCAL_MMR_OFFSET)
+
+#define SH1_GLOBAL_MMR_OFFSET	0x0800000000UL
+#define SH2_GLOBAL_MMR_OFFSET	0x0300000000UL
+#define GLOBAL_MMR_OFFSET	(is_shub2() ? SH2_GLOBAL_MMR_OFFSET : SH1_GLOBAL_MMR_OFFSET)
+#define GLOBAL_MMR_SPACE	(__IA64_UNCACHED_OFFSET | GLOBAL_MMR_OFFSET)
+
+/*
+ * Physical mode addresses
+ */
+#define GLOBAL_PHYS_MMR_SPACE	(RGN_BASE(RGN_HPAGE) | GLOBAL_MMR_OFFSET)
+
+
+/*
+ * Clear region & AS bits.
+ */
+#define TO_PHYS_MASK		(~(RGN_BITS | AS_MASK))
+
+
+/*
+ * Misc NASID manipulation.
+ */
+#define NASID_SPACE(n)		((u64)(n) << NASID_SHIFT)
+#define REMOTE_ADDR(n,a)	(NASID_SPACE(n) | (a))
+#define NODE_OFFSET(x)		((x) & (NODE_ADDRSPACE_SIZE - 1))
+#define NODE_ADDRSPACE_SIZE     (1UL << AS_SHIFT)
+#define NASID_GET(x)		(int) (((u64) (x) >> NASID_SHIFT) & NASID_BITMASK)
+#define LOCAL_MMR_ADDR(a)	(LOCAL_MMR_SPACE | (a))
+#define GLOBAL_MMR_ADDR(n,a)	(GLOBAL_MMR_SPACE | REMOTE_ADDR(n,a))
+#define GLOBAL_MMR_PHYS_ADDR(n,a) (GLOBAL_PHYS_MMR_SPACE | REMOTE_ADDR(n,a))
+#define GLOBAL_CAC_ADDR(n,a)	(CAC_BASE | REMOTE_ADDR(n,a))
+#define CHANGE_NASID(n,x)	((void *)(((u64)(x) & ~NASID_MASK) | NASID_SPACE(n)))
+#define IS_TIO_NASID(n)		((n) & 1)
+
+
+/* non-II mmr's start at top of big window space (4G) */
+#define BWIN_TOP		0x0000000100000000UL
+
+/*
+ * general address defines
+ */
+#define CAC_BASE		(PAGE_OFFSET | AS_CAC_SPACE)
+#define AMO_BASE		(__IA64_UNCACHED_OFFSET | AS_AMO_SPACE)
+#define AMO_PHYS_BASE		(RGN_BASE(RGN_HPAGE) | AS_AMO_SPACE)
+#define GET_BASE		(PAGE_OFFSET | AS_GET_SPACE)
+
+/*
+ * Convert Memory addresses between various addressing modes.
+ */
+#define TO_PHYS(x)		(TO_PHYS_MASK & (x))
+#define TO_CAC(x)		(CAC_BASE     | TO_PHYS(x))
+#ifdef CONFIG_SGI_SN
+#define TO_AMO(x)		(AMO_BASE     | TO_PHYS(x))
+#define TO_GET(x)		(GET_BASE     | TO_PHYS(x))
+#else
+#define TO_AMO(x)		({ BUG(); x; })
+#define TO_GET(x)		({ BUG(); x; })
+#endif
+
+/*
+ * Covert from processor physical address to II/TIO physical address:
+ *	II - squeeze out the AS bits
+ *	TIO- requires a chiplet id in bits 38-39.  For DMA to memory,
+ *           the chiplet id is zero.  If we implement TIO-TIO dma, we might need
+ *           to insert a chiplet id into this macro.  However, it is our belief
+ *           right now that this chiplet id will be ICE, which is also zero.
+ */
+#define SH1_TIO_PHYS_TO_DMA(x) 						\
+	((((u64)(NASID_GET(x))) << 40) | NODE_OFFSET(x))
+
+#define SH2_NETWORK_BANK_OFFSET(x) 					\
+        ((u64)(x) & ((1UL << (sn_hub_info->nasid_shift - 4)) -1))
+
+#define SH2_NETWORK_BANK_SELECT(x) 					\
+        ((((u64)(x) & (0x3UL << (sn_hub_info->nasid_shift - 4)))	\
+        	>> (sn_hub_info->nasid_shift - 4)) << 36)
+
+#define SH2_NETWORK_ADDRESS(x) 						\
+	(SH2_NETWORK_BANK_OFFSET(x) | SH2_NETWORK_BANK_SELECT(x))
+
+#define SH2_TIO_PHYS_TO_DMA(x) 						\
+        (((u64)(NASID_GET(x)) << 40) | 	SH2_NETWORK_ADDRESS(x))
+
+#define PHYS_TO_TIODMA(x)						\
+	(is_shub1() ? SH1_TIO_PHYS_TO_DMA(x) : SH2_TIO_PHYS_TO_DMA(x))
+
+#define PHYS_TO_DMA(x)							\
+	((((u64)(x) & NASID_MASK) >> 2) | NODE_OFFSET(x))
+
+
+/*
+ * Macros to test for address type.
+ */
+#define IS_AMO_ADDRESS(x)	(((u64)(x) & (RGN_BITS | AS_MASK)) == AMO_BASE)
+#define IS_AMO_PHYS_ADDRESS(x)	(((u64)(x) & (RGN_BITS | AS_MASK)) == AMO_PHYS_BASE)
+
+
+/*
+ * The following definitions pertain to the IO special address
+ * space.  They define the location of the big and little windows
+ * of any given node.
+ */
+#define BWIN_SIZE_BITS			29	/* big window size: 512M */
+#define TIO_BWIN_SIZE_BITS		30	/* big window size: 1G */
+#define NODE_SWIN_BASE(n, w)		((w == 0) ? NODE_BWIN_BASE((n), SWIN0_BIGWIN) \
+		: RAW_NODE_SWIN_BASE(n, w))
+#define TIO_SWIN_BASE(n, w) 		(TIO_IO_BASE(n) + \
+					    ((u64) (w) << TIO_SWIN_SIZE_BITS))
+#define NODE_IO_BASE(n)			(GLOBAL_MMR_SPACE | NASID_SPACE(n))
+#define TIO_IO_BASE(n)                  (__IA64_UNCACHED_OFFSET | NASID_SPACE(n))
+#define BWIN_SIZE			(1UL << BWIN_SIZE_BITS)
+#define NODE_BWIN_BASE0(n)		(NODE_IO_BASE(n) + BWIN_SIZE)
+#define NODE_BWIN_BASE(n, w)		(NODE_BWIN_BASE0(n) + ((u64) (w) << BWIN_SIZE_BITS))
+#define RAW_NODE_SWIN_BASE(n, w)	(NODE_IO_BASE(n) + ((u64) (w) << SWIN_SIZE_BITS))
+#define BWIN_WIDGET_MASK		0x7
+#define BWIN_WINDOWNUM(x)		(((x) >> BWIN_SIZE_BITS) & BWIN_WIDGET_MASK)
+#define SH1_IS_BIG_WINDOW_ADDR(x)	((x) & BWIN_TOP)
+
+#define TIO_BWIN_WINDOW_SELECT_MASK	0x7
+#define TIO_BWIN_WINDOWNUM(x)		(((x) >> TIO_BWIN_SIZE_BITS) & TIO_BWIN_WINDOW_SELECT_MASK)
+
+#define TIO_HWIN_SHIFT_BITS		33
+#define TIO_HWIN(x)			(NODE_OFFSET(x) >> TIO_HWIN_SHIFT_BITS)
+
+/*
+ * The following definitions pertain to the IO special address
+ * space.  They define the location of the big and little windows
+ * of any given node.
+ */
+
+#define SWIN_SIZE_BITS			24
+#define	SWIN_WIDGET_MASK		0xF
+
+#define TIO_SWIN_SIZE_BITS		28
+#define TIO_SWIN_SIZE			(1UL << TIO_SWIN_SIZE_BITS)
+#define TIO_SWIN_WIDGET_MASK		0x3
+
+/*
+ * Convert smallwindow address to xtalk address.
+ *
+ * 'addr' can be physical or virtual address, but will be converted
+ * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
+ */
+#define	SWIN_WIDGETNUM(x)		(((x)  >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
+#define TIO_SWIN_WIDGETNUM(x)		(((x)  >> TIO_SWIN_SIZE_BITS) & TIO_SWIN_WIDGET_MASK)
+
+
+/*
+ * The following macros produce the correct base virtual address for
+ * the hub registers. The REMOTE_HUB_* macro produce
+ * the address for the specified hub's registers.  The intent is
+ * that the appropriate PI, MD, NI, or II register would be substituted
+ * for x.
+ *
+ *   WARNING:
+ *	When certain Hub chip workaround are defined, it's not sufficient
+ *	to dereference the *_HUB_ADDR() macros.  You should instead use
+ *	HUB_L() and HUB_S() if you must deal with pointers to hub registers.
+ *	Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
+ *	They're always safe.
+ */
+/* Shub1 TIO & MMR addressing macros */
+#define SH1_TIO_IOSPACE_ADDR(n,x)					\
+	GLOBAL_MMR_ADDR(n,x)
+
+#define SH1_REMOTE_BWIN_MMR(n,x)					\
+	GLOBAL_MMR_ADDR(n,x)
+
+#define SH1_REMOTE_SWIN_MMR(n,x)					\
+	(NODE_SWIN_BASE(n,1) + 0x800000UL + (x))
+
+#define SH1_REMOTE_MMR(n,x)						\
+	(SH1_IS_BIG_WINDOW_ADDR(x) ? SH1_REMOTE_BWIN_MMR(n,x) :		\
+	 	SH1_REMOTE_SWIN_MMR(n,x))
+
+/* Shub1 TIO & MMR addressing macros */
+#define SH2_TIO_IOSPACE_ADDR(n,x)					\
+	((__IA64_UNCACHED_OFFSET | REMOTE_ADDR(n,x) | 1UL << (NASID_SHIFT - 2)))
+
+#define SH2_REMOTE_MMR(n,x)						\
+	GLOBAL_MMR_ADDR(n,x)
+
+
+/* TIO & MMR addressing macros that work on both shub1 & shub2 */
+#define TIO_IOSPACE_ADDR(n,x)						\
+	((u64 *)(is_shub1() ? SH1_TIO_IOSPACE_ADDR(n,x) :		\
+		 SH2_TIO_IOSPACE_ADDR(n,x)))
+
+#define SH_REMOTE_MMR(n,x)						\
+	(is_shub1() ? SH1_REMOTE_MMR(n,x) : SH2_REMOTE_MMR(n,x))
+
+#define REMOTE_HUB_ADDR(n,x)						\
+	(IS_TIO_NASID(n) ?  ((volatile u64*)TIO_IOSPACE_ADDR(n,x)) :	\
+	 ((volatile u64*)SH_REMOTE_MMR(n,x)))
+
+
+#define HUB_L(x)			(*((volatile typeof(*x) *)x))
+#define	HUB_S(x,d)			(*((volatile typeof(*x) *)x) = (d))
+
+#define REMOTE_HUB_L(n, a)		HUB_L(REMOTE_HUB_ADDR((n), (a)))
+#define REMOTE_HUB_S(n, a, d)		HUB_S(REMOTE_HUB_ADDR((n), (a)), (d))
+
+/*
+ * Coretalk address breakdown
+ */
+#define CTALK_NASID_SHFT		40
+#define CTALK_NASID_MASK		(0x3FFFULL << CTALK_NASID_SHFT)
+#define CTALK_CID_SHFT			38
+#define CTALK_CID_MASK			(0x3ULL << CTALK_CID_SHFT)
+#define CTALK_NODE_OFFSET		0x3FFFFFFFFF
+
+#endif /* _ASM_IA64_SN_ADDRS_H */