656 lines
17 KiB
C
656 lines
17 KiB
C
|
/*
|
||
|
|
* Freescale hypervisor call interface
|
||
|
|
*
|
||
|
|
* Copyright 2008-2010 Freescale Semiconductor, Inc.
|
||
|
|
*
|
||
|
|
* Author: Timur Tabi <timur@freescale.com>
|
||
|
|
*
|
||
|
|
* This file is provided under a dual BSD/GPL license. When using or
|
||
|
|
* redistributing this file, you may do so under either license.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
* * Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* * Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* * Neither the name of Freescale Semiconductor nor the
|
||
|
|
* names of its contributors may be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* ALTERNATIVELY, this software may be distributed under the terms of the
|
||
|
|
* GNU General Public License ("GPL") as published by the Free Software
|
||
|
|
* Foundation, either version 2 of that License or (at your option) any
|
||
|
|
* later version.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
|
||
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
|
|
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
|
||
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _FSL_HCALLS_H
|
||
|
|
#define _FSL_HCALLS_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <asm/byteorder.h>
|
||
|
|
#include <asm/epapr_hcalls.h>
|
||
|
|
|
||
|
|
#define FH_API_VERSION 1
|
||
|
|
|
||
|
|
#define FH_ERR_GET_INFO 1
|
||
|
|
#define FH_PARTITION_GET_DTPROP 2
|
||
|
|
#define FH_PARTITION_SET_DTPROP 3
|
||
|
|
#define FH_PARTITION_RESTART 4
|
||
|
|
#define FH_PARTITION_GET_STATUS 5
|
||
|
|
#define FH_PARTITION_START 6
|
||
|
|
#define FH_PARTITION_STOP 7
|
||
|
|
#define FH_PARTITION_MEMCPY 8
|
||
|
|
#define FH_DMA_ENABLE 9
|
||
|
|
#define FH_DMA_DISABLE 10
|
||
|
|
#define FH_SEND_NMI 11
|
||
|
|
#define FH_VMPIC_GET_MSIR 12
|
||
|
|
#define FH_SYSTEM_RESET 13
|
||
|
|
#define FH_GET_CORE_STATE 14
|
||
|
|
#define FH_ENTER_NAP 15
|
||
|
|
#define FH_EXIT_NAP 16
|
||
|
|
#define FH_CLAIM_DEVICE 17
|
||
|
|
#define FH_PARTITION_STOP_DMA 18
|
||
|
|
|
||
|
|
/* vendor ID: Freescale Semiconductor */
|
||
|
|
#define FH_HCALL_TOKEN(num) _EV_HCALL_TOKEN(EV_FSL_VENDOR_ID, num)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We use "uintptr_t" to define a register because it's guaranteed to be a
|
||
|
|
* 32-bit integer on a 32-bit platform, and a 64-bit integer on a 64-bit
|
||
|
|
* platform.
|
||
|
|
*
|
||
|
|
* All registers are either input/output or output only. Registers that are
|
||
|
|
* initialized before making the hypercall are input/output. All
|
||
|
|
* input/output registers are represented with "+r". Output-only registers
|
||
|
|
* are represented with "=r". Do not specify any unused registers. The
|
||
|
|
* clobber list will tell the compiler that the hypercall modifies those
|
||
|
|
* registers, which is good enough.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_send_nmi - send NMI to virtual cpu(s).
|
||
|
|
* @vcpu_mask: send NMI to virtual cpu(s) specified by this mask.
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or EINVAL for invalid vcpu_mask.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_send_nmi(unsigned int vcpu_mask)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_SEND_NMI);
|
||
|
|
r3 = vcpu_mask;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Arbitrary limits to avoid excessive memory allocation in hypervisor */
|
||
|
|
#define FH_DTPROP_MAX_PATHLEN 4096
|
||
|
|
#define FH_DTPROP_MAX_PROPLEN 32768
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_partition_get_dtprop - get a property from a guest device tree.
|
||
|
|
* @handle: handle of partition whose device tree is to be accessed
|
||
|
|
* @dtpath_addr: physical address of device tree path to access
|
||
|
|
* @propname_addr: physical address of name of property
|
||
|
|
* @propvalue_addr: physical address of property value buffer
|
||
|
|
* @propvalue_len: length of buffer on entry, length of property on return
|
||
|
|
*
|
||
|
|
* Returns zero on success, non-zero on error.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_get_dtprop(int handle,
|
||
|
|
uint64_t dtpath_addr,
|
||
|
|
uint64_t propname_addr,
|
||
|
|
uint64_t propvalue_addr,
|
||
|
|
uint32_t *propvalue_len)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
register uintptr_t r5 __asm__("r5");
|
||
|
|
register uintptr_t r6 __asm__("r6");
|
||
|
|
register uintptr_t r7 __asm__("r7");
|
||
|
|
register uintptr_t r8 __asm__("r8");
|
||
|
|
register uintptr_t r9 __asm__("r9");
|
||
|
|
register uintptr_t r10 __asm__("r10");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_GET_DTPROP);
|
||
|
|
r3 = handle;
|
||
|
|
|
||
|
|
#ifdef CONFIG_PHYS_64BIT
|
||
|
|
r4 = dtpath_addr >> 32;
|
||
|
|
r6 = propname_addr >> 32;
|
||
|
|
r8 = propvalue_addr >> 32;
|
||
|
|
#else
|
||
|
|
r4 = 0;
|
||
|
|
r6 = 0;
|
||
|
|
r8 = 0;
|
||
|
|
#endif
|
||
|
|
r5 = (uint32_t)dtpath_addr;
|
||
|
|
r7 = (uint32_t)propname_addr;
|
||
|
|
r9 = (uint32_t)propvalue_addr;
|
||
|
|
r10 = *propvalue_len;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11),
|
||
|
|
"+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7),
|
||
|
|
"+r" (r8), "+r" (r9), "+r" (r10)
|
||
|
|
: : EV_HCALL_CLOBBERS8
|
||
|
|
);
|
||
|
|
|
||
|
|
*propvalue_len = r4;
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set a property in a guest device tree.
|
||
|
|
* @handle: handle of partition whose device tree is to be accessed
|
||
|
|
* @dtpath_addr: physical address of device tree path to access
|
||
|
|
* @propname_addr: physical address of name of property
|
||
|
|
* @propvalue_addr: physical address of property value
|
||
|
|
* @propvalue_len: length of property
|
||
|
|
*
|
||
|
|
* Returns zero on success, non-zero on error.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_set_dtprop(int handle,
|
||
|
|
uint64_t dtpath_addr,
|
||
|
|
uint64_t propname_addr,
|
||
|
|
uint64_t propvalue_addr,
|
||
|
|
uint32_t propvalue_len)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
register uintptr_t r6 __asm__("r6");
|
||
|
|
register uintptr_t r8 __asm__("r8");
|
||
|
|
register uintptr_t r5 __asm__("r5");
|
||
|
|
register uintptr_t r7 __asm__("r7");
|
||
|
|
register uintptr_t r9 __asm__("r9");
|
||
|
|
register uintptr_t r10 __asm__("r10");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_SET_DTPROP);
|
||
|
|
r3 = handle;
|
||
|
|
|
||
|
|
#ifdef CONFIG_PHYS_64BIT
|
||
|
|
r4 = dtpath_addr >> 32;
|
||
|
|
r6 = propname_addr >> 32;
|
||
|
|
r8 = propvalue_addr >> 32;
|
||
|
|
#else
|
||
|
|
r4 = 0;
|
||
|
|
r6 = 0;
|
||
|
|
r8 = 0;
|
||
|
|
#endif
|
||
|
|
r5 = (uint32_t)dtpath_addr;
|
||
|
|
r7 = (uint32_t)propname_addr;
|
||
|
|
r9 = (uint32_t)propvalue_addr;
|
||
|
|
r10 = propvalue_len;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11),
|
||
|
|
"+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7),
|
||
|
|
"+r" (r8), "+r" (r9), "+r" (r10)
|
||
|
|
: : EV_HCALL_CLOBBERS8
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_partition_restart - reboot the current partition
|
||
|
|
* @partition: partition ID
|
||
|
|
*
|
||
|
|
* Returns an error code if reboot failed. Does not return if it succeeds.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_restart(unsigned int partition)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_RESTART);
|
||
|
|
r3 = partition;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define FH_PARTITION_STOPPED 0
|
||
|
|
#define FH_PARTITION_RUNNING 1
|
||
|
|
#define FH_PARTITION_STARTING 2
|
||
|
|
#define FH_PARTITION_STOPPING 3
|
||
|
|
#define FH_PARTITION_PAUSING 4
|
||
|
|
#define FH_PARTITION_PAUSED 5
|
||
|
|
#define FH_PARTITION_RESUMING 6
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_partition_get_status - gets the status of a partition
|
||
|
|
* @partition: partition ID
|
||
|
|
* @status: returned status code
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_get_status(unsigned int partition,
|
||
|
|
unsigned int *status)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_GET_STATUS);
|
||
|
|
r3 = partition;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3), "=r" (r4)
|
||
|
|
: : EV_HCALL_CLOBBERS2
|
||
|
|
);
|
||
|
|
|
||
|
|
*status = r4;
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_partition_start - boots and starts execution of the specified partition
|
||
|
|
* @partition: partition ID
|
||
|
|
* @entry_point: guest physical address to start execution
|
||
|
|
*
|
||
|
|
* The hypervisor creates a 1-to-1 virtual/physical IMA mapping, so at boot
|
||
|
|
* time, guest physical address are the same as guest virtual addresses.
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_start(unsigned int partition,
|
||
|
|
uint32_t entry_point, int load)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
register uintptr_t r5 __asm__("r5");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_START);
|
||
|
|
r3 = partition;
|
||
|
|
r4 = entry_point;
|
||
|
|
r5 = load;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5)
|
||
|
|
: : EV_HCALL_CLOBBERS3
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_partition_stop - stops another partition
|
||
|
|
* @partition: partition ID
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_stop(unsigned int partition)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_STOP);
|
||
|
|
r3 = partition;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct fh_sg_list: definition of the fh_partition_memcpy S/G list
|
||
|
|
* @source: guest physical address to copy from
|
||
|
|
* @target: guest physical address to copy to
|
||
|
|
* @size: number of bytes to copy
|
||
|
|
* @reserved: reserved, must be zero
|
||
|
|
*
|
||
|
|
* The scatter/gather list for fh_partition_memcpy() is an array of these
|
||
|
|
* structures. The array must be guest physically contiguous.
|
||
|
|
*
|
||
|
|
* This structure must be aligned on 32-byte boundary, so that no single
|
||
|
|
* strucuture can span two pages.
|
||
|
|
*/
|
||
|
|
struct fh_sg_list {
|
||
|
|
uint64_t source; /**< guest physical address to copy from */
|
||
|
|
uint64_t target; /**< guest physical address to copy to */
|
||
|
|
uint64_t size; /**< number of bytes to copy */
|
||
|
|
uint64_t reserved; /**< reserved, must be zero */
|
||
|
|
} __attribute__ ((aligned(32)));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_partition_memcpy - copies data from one guest to another
|
||
|
|
* @source: the ID of the partition to copy from
|
||
|
|
* @target: the ID of the partition to copy to
|
||
|
|
* @sg_list: guest physical address of an array of &fh_sg_list structures
|
||
|
|
* @count: the number of entries in @sg_list
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_memcpy(unsigned int source,
|
||
|
|
unsigned int target, phys_addr_t sg_list, unsigned int count)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
register uintptr_t r5 __asm__("r5");
|
||
|
|
register uintptr_t r6 __asm__("r6");
|
||
|
|
register uintptr_t r7 __asm__("r7");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_MEMCPY);
|
||
|
|
r3 = source;
|
||
|
|
r4 = target;
|
||
|
|
r5 = (uint32_t) sg_list;
|
||
|
|
|
||
|
|
#ifdef CONFIG_PHYS_64BIT
|
||
|
|
r6 = sg_list >> 32;
|
||
|
|
#else
|
||
|
|
r6 = 0;
|
||
|
|
#endif
|
||
|
|
r7 = count;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11),
|
||
|
|
"+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7)
|
||
|
|
: : EV_HCALL_CLOBBERS5
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_dma_enable - enable DMA for the specified device
|
||
|
|
* @liodn: the LIODN of the I/O device for which to enable DMA
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_dma_enable(unsigned int liodn)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_DMA_ENABLE);
|
||
|
|
r3 = liodn;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_dma_disable - disable DMA for the specified device
|
||
|
|
* @liodn: the LIODN of the I/O device for which to disable DMA
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_dma_disable(unsigned int liodn)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_DMA_DISABLE);
|
||
|
|
r3 = liodn;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_vmpic_get_msir - returns the MPIC-MSI register value
|
||
|
|
* @interrupt: the interrupt number
|
||
|
|
* @msir_val: returned MPIC-MSI register value
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_vmpic_get_msir(unsigned int interrupt,
|
||
|
|
unsigned int *msir_val)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_VMPIC_GET_MSIR);
|
||
|
|
r3 = interrupt;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3), "=r" (r4)
|
||
|
|
: : EV_HCALL_CLOBBERS2
|
||
|
|
);
|
||
|
|
|
||
|
|
*msir_val = r4;
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_system_reset - reset the system
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_system_reset(void)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_SYSTEM_RESET);
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "=r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_err_get_info - get platform error information
|
||
|
|
* @queue id:
|
||
|
|
* 0 for guest error event queue
|
||
|
|
* 1 for global error event queue
|
||
|
|
*
|
||
|
|
* @pointer to store the platform error data:
|
||
|
|
* platform error data is returned in registers r4 - r11
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_err_get_info(int queue, uint32_t *bufsize,
|
||
|
|
uint32_t addr_hi, uint32_t addr_lo, int peek)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
register uintptr_t r5 __asm__("r5");
|
||
|
|
register uintptr_t r6 __asm__("r6");
|
||
|
|
register uintptr_t r7 __asm__("r7");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_ERR_GET_INFO);
|
||
|
|
r3 = queue;
|
||
|
|
r4 = *bufsize;
|
||
|
|
r5 = addr_hi;
|
||
|
|
r6 = addr_lo;
|
||
|
|
r7 = peek;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6),
|
||
|
|
"+r" (r7)
|
||
|
|
: : EV_HCALL_CLOBBERS5
|
||
|
|
);
|
||
|
|
|
||
|
|
*bufsize = r4;
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#define FH_VCPU_RUN 0
|
||
|
|
#define FH_VCPU_IDLE 1
|
||
|
|
#define FH_VCPU_NAP 2
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_get_core_state - get the state of a vcpu
|
||
|
|
*
|
||
|
|
* @handle: handle of partition containing the vcpu
|
||
|
|
* @vcpu: vcpu number within the partition
|
||
|
|
* @state:the current state of the vcpu, see FH_VCPU_*
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_get_core_state(unsigned int handle,
|
||
|
|
unsigned int vcpu, unsigned int *state)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_GET_CORE_STATE);
|
||
|
|
r3 = handle;
|
||
|
|
r4 = vcpu;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3), "+r" (r4)
|
||
|
|
: : EV_HCALL_CLOBBERS2
|
||
|
|
);
|
||
|
|
|
||
|
|
*state = r4;
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_enter_nap - enter nap on a vcpu
|
||
|
|
*
|
||
|
|
* Note that though the API supports entering nap on a vcpu other
|
||
|
|
* than the caller, this may not be implmented and may return EINVAL.
|
||
|
|
*
|
||
|
|
* @handle: handle of partition containing the vcpu
|
||
|
|
* @vcpu: vcpu number within the partition
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_enter_nap(unsigned int handle, unsigned int vcpu)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_ENTER_NAP);
|
||
|
|
r3 = handle;
|
||
|
|
r4 = vcpu;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3), "+r" (r4)
|
||
|
|
: : EV_HCALL_CLOBBERS2
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* fh_exit_nap - exit nap on a vcpu
|
||
|
|
* @handle: handle of partition containing the vcpu
|
||
|
|
* @vcpu: vcpu number within the partition
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_exit_nap(unsigned int handle, unsigned int vcpu)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
register uintptr_t r4 __asm__("r4");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_EXIT_NAP);
|
||
|
|
r3 = handle;
|
||
|
|
r4 = vcpu;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3), "+r" (r4)
|
||
|
|
: : EV_HCALL_CLOBBERS2
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* fh_claim_device - claim a "claimable" shared device
|
||
|
|
* @handle: fsl,hv-device-handle of node to claim
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_claim_device(unsigned int handle)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_CLAIM_DEVICE);
|
||
|
|
r3 = handle;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Run deferred DMA disabling on a partition's private devices
|
||
|
|
*
|
||
|
|
* This applies to devices which a partition owns either privately,
|
||
|
|
* or which are claimable and still actively owned by that partition,
|
||
|
|
* and which do not have the no-dma-disable property.
|
||
|
|
*
|
||
|
|
* @handle: partition (must be stopped) whose DMA is to be disabled
|
||
|
|
*
|
||
|
|
* Returns 0 for success, or an error code.
|
||
|
|
*/
|
||
|
|
static inline unsigned int fh_partition_stop_dma(unsigned int handle)
|
||
|
|
{
|
||
|
|
register uintptr_t r11 __asm__("r11");
|
||
|
|
register uintptr_t r3 __asm__("r3");
|
||
|
|
|
||
|
|
r11 = FH_HCALL_TOKEN(FH_PARTITION_STOP_DMA);
|
||
|
|
r3 = handle;
|
||
|
|
|
||
|
|
asm volatile("bl epapr_hypercall_start"
|
||
|
|
: "+r" (r11), "+r" (r3)
|
||
|
|
: : EV_HCALL_CLOBBERS1
|
||
|
|
);
|
||
|
|
|
||
|
|
return r3;
|
||
|
|
}
|
||
|
|
#endif
|