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/*
* Copyright (C) 2005 Hewlett-Packard Co
* Dan Magenheimer <dan.magenheimer@hp.com>
*
* Paravirtualizations of privileged operations for Xen/ia64
*
*/
#ifndef _PRIVOP_H_
#define _PRIVOP_H_
#include <xen/arch-ia64.h>
#define IA64_PARAVIRTUALIZED
/* At 1 MB, before per-cpu space but still addressable using addl instead
of movl. */
#define XSI_BASE 0xfffffffffff00000
/* Address of mapped regs. */
#define XMAPPEDREGS_BASE (XSI_BASE + XSI_SIZE)
#ifdef __ASSEMBLY__
#define XEN_HYPER_RFI break HYPERPRIVOP_RFI
#define XEN_HYPER_RSM_PSR_DT break HYPERPRIVOP_RSM_DT
#define XEN_HYPER_SSM_PSR_DT break HYPERPRIVOP_SSM_DT
#define XEN_HYPER_COVER break HYPERPRIVOP_COVER
#define XEN_HYPER_ITC_D break HYPERPRIVOP_ITC_D
#define XEN_HYPER_ITC_I break HYPERPRIVOP_ITC_I
#define XEN_HYPER_SSM_I break HYPERPRIVOP_SSM_I
#define XEN_HYPER_GET_IVR break HYPERPRIVOP_GET_IVR
#define XEN_HYPER_GET_TPR break HYPERPRIVOP_GET_TPR
#define XEN_HYPER_SET_TPR break HYPERPRIVOP_SET_TPR
#define XEN_HYPER_EOI break HYPERPRIVOP_EOI
#define XEN_HYPER_SET_ITM break HYPERPRIVOP_SET_ITM
#define XEN_HYPER_THASH break HYPERPRIVOP_THASH
#define XEN_HYPER_PTC_GA break HYPERPRIVOP_PTC_GA
#define XEN_HYPER_ITR_D break HYPERPRIVOP_ITR_D
#define XEN_HYPER_GET_RR break HYPERPRIVOP_GET_RR
#define XEN_HYPER_SET_RR break HYPERPRIVOP_SET_RR
#define XEN_HYPER_SET_KR break HYPERPRIVOP_SET_KR
#define XEN_HYPER_FC break HYPERPRIVOP_FC
#define XEN_HYPER_GET_CPUID break HYPERPRIVOP_GET_CPUID
#define XEN_HYPER_GET_PMD break HYPERPRIVOP_GET_PMD
#define XEN_HYPER_GET_EFLAG break HYPERPRIVOP_GET_EFLAG
#define XEN_HYPER_SET_EFLAG break HYPERPRIVOP_SET_EFLAG
#define XEN_HYPER_RSM_BE break HYPERPRIVOP_RSM_BE
#define XEN_HYPER_GET_PSR break HYPERPRIVOP_GET_PSR
#define XSI_IFS (XSI_BASE + XSI_IFS_OFS)
#define XSI_PRECOVER_IFS (XSI_BASE + XSI_PRECOVER_IFS_OFS)
#define XSI_INCOMPL_REGFR (XSI_BASE + XSI_INCOMPL_REGFR_OFS)
#define XSI_IFA (XSI_BASE + XSI_IFA_OFS)
#define XSI_ISR (XSI_BASE + XSI_ISR_OFS)
#define XSI_IIM (XSI_BASE + XSI_IIM_OFS)
#define XSI_ITIR (XSI_BASE + XSI_ITIR_OFS)
#define XSI_PSR_I_ADDR (XSI_BASE + XSI_PSR_I_ADDR_OFS)
#define XSI_PSR_IC (XSI_BASE + XSI_PSR_IC_OFS)
#define XSI_IPSR (XSI_BASE + XSI_IPSR_OFS)
#define XSI_IIP (XSI_BASE + XSI_IIP_OFS)
#define XSI_BANK1_R16 (XSI_BASE + XSI_BANK1_R16_OFS)
#define XSI_BANKNUM (XSI_BASE + XSI_BANKNUM_OFS)
#define XSI_IHA (XSI_BASE + XSI_IHA_OFS)
#endif
#ifndef __ASSEMBLY__
#define XEN_HYPER_SSM_I asm("break %0" : : "i" (HYPERPRIVOP_SSM_I))
#define XEN_HYPER_GET_IVR asm("break %0" : : "i" (HYPERPRIVOP_GET_IVR))
/************************************************/
/* Instructions paravirtualized for performance */
/************************************************/
/* Xen uses memory-mapped virtual privileged registers for access to many
* performance-sensitive privileged registers. Some, like the processor
* status register (psr), are broken up into multiple memory locations.
* Others, like "pend", are abstractions based on privileged registers.
* "Pend" is guaranteed to be set if reading cr.ivr would return a
* (non-spurious) interrupt. */
#define XEN_MAPPEDREGS ((struct mapped_regs *)XMAPPEDREGS_BASE)
#define XSI_PSR_I \
(*XEN_MAPPEDREGS->interrupt_mask_addr)
#define xen_get_virtual_psr_i() \
(!XSI_PSR_I)
#define xen_set_virtual_psr_i(_val) \
({ XSI_PSR_I = (uint8_t)(_val) ? 0 : 1; })
#define xen_get_virtual_psr_ic() \
( XEN_MAPPEDREGS->interrupt_collection_enabled )
#define xen_set_virtual_psr_ic(_val) \
({ XEN_MAPPEDREGS->interrupt_collection_enabled = _val ? 1 : 0; })
#define xen_get_virtual_pend() (XEN_MAPPEDREGS->pending_interruption)
#endif /* __ASSEMBLY__ */
#endif /* _PRIVOP_H_ */
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