--- /dev/null
+/*
+ * ePAPR hcall interface
+ *
+ * Copyright 2008-2011 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.
+ */
+
+/* A "hypercall" is an "sc 1" instruction. This header file file provides C
+ * wrapper functions for the ePAPR hypervisor interface. It is inteded
+ * for use by Linux device drivers and other operating systems.
+ *
+ * The hypercalls are implemented as inline assembly, rather than assembly
+ * language functions in a .S file, for optimization. It allows
+ * the caller to issue the hypercall instruction directly, improving both
+ * performance and memory footprint.
+ */
+
+#ifndef _EPAPR_HCALLS_H
+#define _EPAPR_HCALLS_H
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/byteorder.h>
+
+#define EV_BYTE_CHANNEL_SEND 1
+#define EV_BYTE_CHANNEL_RECEIVE 2
+#define EV_BYTE_CHANNEL_POLL 3
+#define EV_INT_SET_CONFIG 4
+#define EV_INT_GET_CONFIG 5
+#define EV_INT_SET_MASK 6
+#define EV_INT_GET_MASK 7
+#define EV_INT_IACK 9
+#define EV_INT_EOI 10
+#define EV_INT_SEND_IPI 11
+#define EV_INT_SET_TASK_PRIORITY 12
+#define EV_INT_GET_TASK_PRIORITY 13
+#define EV_DOORBELL_SEND 14
+#define EV_MSGSND 15
+#define EV_IDLE 16
+
+/* vendor ID: epapr */
+#define EV_LOCAL_VENDOR_ID 0 /* for private use */
+#define EV_EPAPR_VENDOR_ID 1
+#define EV_FSL_VENDOR_ID 2 /* Freescale Semiconductor */
+#define EV_IBM_VENDOR_ID 3 /* IBM */
+#define EV_GHS_VENDOR_ID 4 /* Green Hills Software */
+#define EV_ENEA_VENDOR_ID 5 /* Enea */
+#define EV_WR_VENDOR_ID 6 /* Wind River Systems */
+#define EV_AMCC_VENDOR_ID 7 /* Applied Micro Circuits */
+#define EV_KVM_VENDOR_ID 42 /* KVM */
+
+/* The max number of bytes that a byte channel can send or receive per call */
+#define EV_BYTE_CHANNEL_MAX_BYTES 16
+
+
+#define _EV_HCALL_TOKEN(id, num) (((id) << 16) | (num))
+#define EV_HCALL_TOKEN(hcall_num) _EV_HCALL_TOKEN(EV_EPAPR_VENDOR_ID, hcall_num)
+
+/* epapr error codes */
+#define EV_EPERM 1 /* Operation not permitted */
+#define EV_ENOENT 2 /* Entry Not Found */
+#define EV_EIO 3 /* I/O error occured */
+#define EV_EAGAIN 4 /* The operation had insufficient
+ * resources to complete and should be
+ * retried
+ */
+#define EV_ENOMEM 5 /* There was insufficient memory to
+ * complete the operation */
+#define EV_EFAULT 6 /* Bad guest address */
+#define EV_ENODEV 7 /* No such device */
+#define EV_EINVAL 8 /* An argument supplied to the hcall
+ was out of range or invalid */
+#define EV_INTERNAL 9 /* An internal error occured */
+#define EV_CONFIG 10 /* A configuration error was detected */
+#define EV_INVALID_STATE 11 /* The object is in an invalid state */
+#define EV_UNIMPLEMENTED 12 /* Unimplemented hypercall */
+#define EV_BUFFER_OVERFLOW 13 /* Caller-supplied buffer too small */
+
+/*
+ * Hypercall register clobber list
+ *
+ * These macros are used to define the list of clobbered registers during a
+ * hypercall. Technically, registers r0 and r3-r12 are always clobbered,
+ * but the gcc inline assembly syntax does not allow us to specify registers
+ * on the clobber list that are also on the input/output list. Therefore,
+ * the lists of clobbered registers depends on the number of register
+ * parmeters ("+r" and "=r") passed to the hypercall.
+ *
+ * Each assembly block should use one of the HCALL_CLOBBERSx macros. As a
+ * general rule, 'x' is the number of parameters passed to the assembly
+ * block *except* for r11.
+ *
+ * If you're not sure, just use the smallest value of 'x' that does not
+ * generate a compilation error. Because these are static inline functions,
+ * the compiler will only check the clobber list for a function if you
+ * compile code that calls that function.
+ *
+ * r3 and r11 are not included in any clobbers list because they are always
+ * listed as output registers.
+ *
+ * XER, CTR, and LR are currently listed as clobbers because it's uncertain
+ * whether they will be clobbered.
+ *
+ * Note that r11 can be used as an output parameter.
+*/
+
+/* List of common clobbered registers. Do not use this macro. */
+#define EV_HCALL_CLOBBERS "r0", "r12", "xer", "ctr", "lr", "cc"
+
+#define EV_HCALL_CLOBBERS8 EV_HCALL_CLOBBERS
+#define EV_HCALL_CLOBBERS7 EV_HCALL_CLOBBERS8, "r10"
+#define EV_HCALL_CLOBBERS6 EV_HCALL_CLOBBERS7, "r9"
+#define EV_HCALL_CLOBBERS5 EV_HCALL_CLOBBERS6, "r8"
+#define EV_HCALL_CLOBBERS4 EV_HCALL_CLOBBERS5, "r7"
+#define EV_HCALL_CLOBBERS3 EV_HCALL_CLOBBERS4, "r6"
+#define EV_HCALL_CLOBBERS2 EV_HCALL_CLOBBERS3, "r5"
+#define EV_HCALL_CLOBBERS1 EV_HCALL_CLOBBERS2, "r4"
+
+
+/*
+ * 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.
+ */
+
+/**
+ * ev_int_set_config - configure the specified interrupt
+ * @interrupt: the interrupt number
+ * @config: configuration for this interrupt
+ * @priority: interrupt priority
+ * @destination: destination CPU number
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_int_set_config(unsigned int interrupt,
+ uint32_t config, unsigned int priority, uint32_t destination)
+{
+ 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");
+
+ r11 = EV_HCALL_TOKEN(EV_INT_SET_CONFIG);
+ r3 = interrupt;
+ r4 = config;
+ r5 = priority;
+ r6 = destination;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6)
+ : : EV_HCALL_CLOBBERS4
+ );
+
+ return r3;
+}
+
+/**
+ * ev_int_get_config - return the config of the specified interrupt
+ * @interrupt: the interrupt number
+ * @config: returned configuration for this interrupt
+ * @priority: returned interrupt priority
+ * @destination: returned destination CPU number
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_int_get_config(unsigned int interrupt,
+ uint32_t *config, unsigned int *priority, uint32_t *destination)
+{
+ 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");
+
+ r11 = EV_HCALL_TOKEN(EV_INT_GET_CONFIG);
+ r3 = interrupt;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3), "=r" (r4), "=r" (r5), "=r" (r6)
+ : : EV_HCALL_CLOBBERS4
+ );
+
+ *config = r4;
+ *priority = r5;
+ *destination = r6;
+
+ return r3;
+}
+
+/**
+ * ev_int_set_mask - sets the mask for the specified interrupt source
+ * @interrupt: the interrupt number
+ * @mask: 0=enable interrupts, 1=disable interrupts
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_int_set_mask(unsigned int interrupt,
+ unsigned int mask)
+{
+ register uintptr_t r11 __asm__("r11");
+ register uintptr_t r3 __asm__("r3");
+ register uintptr_t r4 __asm__("r4");
+
+ r11 = EV_HCALL_TOKEN(EV_INT_SET_MASK);
+ r3 = interrupt;
+ r4 = mask;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3), "+r" (r4)
+ : : EV_HCALL_CLOBBERS2
+ );
+
+ return r3;
+}
+
+/**
+ * ev_int_get_mask - returns the mask for the specified interrupt source
+ * @interrupt: the interrupt number
+ * @mask: returned mask for this interrupt (0=enabled, 1=disabled)
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_int_get_mask(unsigned int interrupt,
+ unsigned int *mask)
+{
+ register uintptr_t r11 __asm__("r11");
+ register uintptr_t r3 __asm__("r3");
+ register uintptr_t r4 __asm__("r4");
+
+ r11 = EV_HCALL_TOKEN(EV_INT_GET_MASK);
+ r3 = interrupt;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3), "=r" (r4)
+ : : EV_HCALL_CLOBBERS2
+ );
+
+ *mask = r4;
+
+ return r3;
+}
+
+/**
+ * ev_int_eoi - signal the end of interrupt processing
+ * @interrupt: the interrupt number
+ *
+ * This function signals the end of processing for the the specified
+ * interrupt, which must be the interrupt currently in service. By
+ * definition, this is also the highest-priority interrupt.
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_int_eoi(unsigned int interrupt)
+{
+ register uintptr_t r11 __asm__("r11");
+ register uintptr_t r3 __asm__("r3");
+
+ r11 = EV_HCALL_TOKEN(EV_INT_EOI);
+ r3 = interrupt;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3)
+ : : EV_HCALL_CLOBBERS1
+ );
+
+ return r3;
+}
+
+/**
+ * ev_byte_channel_send - send characters to a byte stream
+ * @handle: byte stream handle
+ * @count: (input) num of chars to send, (output) num chars sent
+ * @buffer: pointer to a 16-byte buffer
+ *
+ * @buffer must be at least 16 bytes long, because all 16 bytes will be
+ * read from memory into registers, even if count < 16.
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_byte_channel_send(unsigned int handle,
+ unsigned int *count, const char buffer[EV_BYTE_CHANNEL_MAX_BYTES])
+{
+ 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");
+ const uint32_t *p = (const uint32_t *) buffer;
+
+ r11 = EV_HCALL_TOKEN(EV_BYTE_CHANNEL_SEND);
+ r3 = handle;
+ r4 = *count;
+ r5 = be32_to_cpu(p[0]);
+ r6 = be32_to_cpu(p[1]);
+ r7 = be32_to_cpu(p[2]);
+ r8 = be32_to_cpu(p[3]);
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3),
+ "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7), "+r" (r8)
+ : : EV_HCALL_CLOBBERS6
+ );
+
+ *count = r4;
+
+ return r3;
+}
+
+/**
+ * ev_byte_channel_receive - fetch characters from a byte channel
+ * @handle: byte channel handle
+ * @count: (input) max num of chars to receive, (output) num chars received
+ * @buffer: pointer to a 16-byte buffer
+ *
+ * The size of @buffer must be at least 16 bytes, even if you request fewer
+ * than 16 characters, because we always write 16 bytes to @buffer. This is
+ * for performance reasons.
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_byte_channel_receive(unsigned int handle,
+ unsigned int *count, char buffer[EV_BYTE_CHANNEL_MAX_BYTES])
+{
+ 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");
+ uint32_t *p = (uint32_t *) buffer;
+
+ r11 = EV_HCALL_TOKEN(EV_BYTE_CHANNEL_RECEIVE);
+ r3 = handle;
+ r4 = *count;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3), "+r" (r4),
+ "=r" (r5), "=r" (r6), "=r" (r7), "=r" (r8)
+ : : EV_HCALL_CLOBBERS6
+ );
+
+ *count = r4;
+ p[0] = cpu_to_be32(r5);
+ p[1] = cpu_to_be32(r6);
+ p[2] = cpu_to_be32(r7);
+ p[3] = cpu_to_be32(r8);
+
+ return r3;
+}
+
+/**
+ * ev_byte_channel_poll - returns the status of the byte channel buffers
+ * @handle: byte channel handle
+ * @rx_count: returned count of bytes in receive queue
+ * @tx_count: returned count of free space in transmit queue
+ *
+ * This function reports the amount of data in the receive queue (i.e. the
+ * number of bytes you can read), and the amount of free space in the transmit
+ * queue (i.e. the number of bytes you can write).
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_byte_channel_poll(unsigned int handle,
+ unsigned int *rx_count, unsigned int *tx_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");
+
+ r11 = EV_HCALL_TOKEN(EV_BYTE_CHANNEL_POLL);
+ r3 = handle;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3), "=r" (r4), "=r" (r5)
+ : : EV_HCALL_CLOBBERS3
+ );
+
+ *rx_count = r4;
+ *tx_count = r5;
+
+ return r3;
+}
+
+/**
+ * ev_int_iack - acknowledge an interrupt
+ * @handle: handle to the target interrupt controller
+ * @vector: returned interrupt vector
+ *
+ * If handle is zero, the function returns the next interrupt source
+ * number to be handled irrespective of the hierarchy or cascading
+ * of interrupt controllers. If non-zero, specifies a handle to the
+ * interrupt controller that is the target of the acknowledge.
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_int_iack(unsigned int handle,
+ unsigned int *vector)
+{
+ register uintptr_t r11 __asm__("r11");
+ register uintptr_t r3 __asm__("r3");
+ register uintptr_t r4 __asm__("r4");
+
+ r11 = EV_HCALL_TOKEN(EV_INT_IACK);
+ r3 = handle;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3), "=r" (r4)
+ : : EV_HCALL_CLOBBERS2
+ );
+
+ *vector = r4;
+
+ return r3;
+}
+
+/**
+ * ev_doorbell_send - send a doorbell to another partition
+ * @handle: doorbell send handle
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_doorbell_send(unsigned int handle)
+{
+ register uintptr_t r11 __asm__("r11");
+ register uintptr_t r3 __asm__("r3");
+
+ r11 = EV_HCALL_TOKEN(EV_DOORBELL_SEND);
+ r3 = handle;
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "+r" (r3)
+ : : EV_HCALL_CLOBBERS1
+ );
+
+ return r3;
+}
+
+/**
+ * ev_idle -- wait for next interrupt on this core
+ *
+ * Returns 0 for success, or an error code.
+ */
+static inline unsigned int ev_idle(void)
+{
+ register uintptr_t r11 __asm__("r11");
+ register uintptr_t r3 __asm__("r3");
+
+ r11 = EV_HCALL_TOKEN(EV_IDLE);
+
+ __asm__ __volatile__ ("sc 1"
+ : "+r" (r11), "=r" (r3)
+ : : EV_HCALL_CLOBBERS1
+ );
+
+ return r3;
+}
+
+#endif
--- /dev/null
+/*
+ * 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__ ("sc 1"
+ : "+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_partiton_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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+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__ ("sc 1"
+ : "+r" (r11), "+r" (r3)
+ : : EV_HCALL_CLOBBERS1
+ );
+
+ return r3;
+}
+#endif
projects / mirror_ubuntu-jammy-kernel.git / commitdiff