/*
* 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 .
*
* Numascale NumaConnect - Specific Header file
*
* Copyright ( C ) 2011 Numascale AS . All rights reserved .
*
* Send feedback to < support @ numascale . com >
*
*/
#ifndef _ASM_X86_NUMACHIP_NUMACHIP_CSR_H
#define _ASM_X86_NUMACHIP_NUMACHIP_CSR_H
#include <linux/smp.h>
#include <linux/io.h>
#define CSR_NODE_SHIFT 16
#define CSR_NODE_BITS(p) (((unsigned long )(p)) << CSR_NODE_SHIFT)
#define CSR_NODE_MASK 0 x0fff /* 4K nodes */
/* 32K CSR space, b15 indicates geo/non-geo */
#define CSR_OFFSET_MASK 0 x7fffUL
#define CSR_G0_NODE_IDS (0 x008 + (0 << 12 ))
#define CSR_G3_EXT_IRQ_GEN (0 x030 + (3 << 12 ))
/*
* Local CSR space starts in global CSR space with " nodeid " = 0 xfff0 , however
* when using the direct mapping on x86_64 , both start and size needs to be
* aligned with PMD_SIZE which is 2 M
*/
#define NUMACHIP_LCSR_BASE 0 x3ffffe000000ULL
#define NUMACHIP_LCSR_LIM 0 x3fffffffffffULL
#define NUMACHIP_LCSR_SIZE (NUMACHIP_LCSR_LIM - NUMACHIP_LCSR_BASE + 1 )
#define NUMACHIP_LAPIC_BITS 8
static inline void *lcsr_address(unsigned long offset)
{
return __va(NUMACHIP_LCSR_BASE | (1 UL << 15 ) |
CSR_NODE_BITS(0 xfff0) | (offset & CSR_OFFSET_MASK));
}
static inline unsigned int read_lcsr(unsigned long offset)
{
return swab32(readl(lcsr_address(offset)));
}
static inline void write_lcsr(unsigned long offset, unsigned int val)
{
writel(swab32(val), lcsr_address(offset));
}
/*
* On NumaChip2 , local CSR space is 16 MB and starts at fixed offset below 4 G
*/
#define NUMACHIP2_LCSR_BASE 0 xf0000000UL
#define NUMACHIP2_LCSR_SIZE 0 x1000000UL
#define NUMACHIP2_APIC_ICR 0 x100000
#define NUMACHIP2_TIMER_DEADLINE 0 x200000
#define NUMACHIP2_TIMER_INT 0 x200008
#define NUMACHIP2_TIMER_NOW 0 x200018
#define NUMACHIP2_TIMER_RESET 0 x200020
static inline void __iomem *numachip2_lcsr_address(unsigned long offset)
{
return (void __iomem *)__va(NUMACHIP2_LCSR_BASE |
(offset & (NUMACHIP2_LCSR_SIZE - 1 )));
}
static inline u32 numachip2_read32_lcsr(unsigned long offset)
{
return readl(numachip2_lcsr_address(offset));
}
static inline u64 numachip2_read64_lcsr(unsigned long offset)
{
return readq(numachip2_lcsr_address(offset));
}
static inline void numachip2_write32_lcsr(unsigned long offset, u32 val)
{
writel(val, numachip2_lcsr_address(offset));
}
static inline void numachip2_write64_lcsr(unsigned long offset, u64 val)
{
writeq(val, numachip2_lcsr_address(offset));
}
static inline unsigned int numachip2_timer(void )
{
return (smp_processor_id() % 48 ) << 6 ;
}
#endif /* _ASM_X86_NUMACHIP_NUMACHIP_CSR_H */
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(vorverarbeitet am 2026-09-29)
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