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freebsd-skq/sys/dev/psci/psci.h

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Add a driver for the ARM Power State Coordination Interface (PSCI). This handles versions 0.1 and 0.2 of the standard on 32-bit ARM. With this driver we can shutdown in QEMU. Further work is needed to turn secondary cores on on boot and to support later revisions of the specification. Submitted by: Robin Randhawa <Robin.Randhawa at ARM.com> Sponsored by: The FreeBSD Foundation
2015-04-12 13:00:58 +00:00
/*-
* Copyright (c) 2013, 2014 Robin Randhawa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_PSCI_H_
#define _MACHINE_PSCI_H_
#include <sys/types.h>
Add generic arm/arm64 secure-monitor SMCCC interface and switch PSCI code to use it. This interface will also be used by Intel Stratix 10 platform. This was not tested on arm due to lack of PSCI-enabled arm hardware lying around. Reviewed by: andrew Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D21439
2019-09-13 15:56:33 +00:00
#include <dev/psci/smccc.h>
Add a driver for the ARM Power State Coordination Interface (PSCI). This handles versions 0.1 and 0.2 of the standard on 32-bit ARM. With this driver we can shutdown in QEMU. Further work is needed to turn secondary cores on on boot and to support later revisions of the specification. Submitted by: Robin Randhawa <Robin.Randhawa at ARM.com> Sponsored by: The FreeBSD Foundation
2015-04-12 13:00:58 +00:00
PSCI: Don't take missing implementation of psci get_version() as fatal. Minimalistic PSCI implementation in U-Boot doesn't implement get_version() method for some SoC. In this case, use PSCI version declared by 'psci' node in DT as fallback. MFC after: 2 weeks
2019-03-19 15:42:11 +00:00
typedef int (*psci_initfn_t)(device_t dev, int default_version);
Add generic arm/arm64 secure-monitor SMCCC interface and switch PSCI code to use it. This interface will also be used by Intel Stratix 10 platform. This was not tested on arm due to lack of PSCI-enabled arm hardware lying around. Reviewed by: andrew Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D21439
2019-09-13 15:56:33 +00:00
typedef int (*psci_callfn_t)(register_t, register_t, register_t, register_t,
register_t, register_t, register_t, register_t,
struct arm_smccc_res *res);
Add a driver for the ARM Power State Coordination Interface (PSCI). This handles versions 0.1 and 0.2 of the standard on 32-bit ARM. With this driver we can shutdown in QEMU. Further work is needed to turn secondary cores on on boot and to support later revisions of the specification. Submitted by: Robin Randhawa <Robin.Randhawa at ARM.com> Sponsored by: The FreeBSD Foundation
2015-04-12 13:00:58 +00:00
extern int psci_present;
int psci_cpu_on(unsigned long, unsigned long, unsigned long);
Add a handler for the PSCI_FEATURES function. This needs PSCI 1.0, so check for this, returning an error if the version is too old. Sponsored by: DARPA, AFRL
2018-06-13 12:33:47 +00:00
void psci_reset(void);
int32_t psci_features(uint32_t);
int psci_get_version(void);
Move psci_call to a header file so we can use it in other files to communicate with the firmware. Sponsored by: DARPA, AFRL
2018-06-13 15:24:07 +00:00
/* Handler to let us call into the PSCI/SMCCC firmware */
extern psci_callfn_t psci_callfn;
static inline int
psci_call(register_t a, register_t b, register_t c, register_t d)
{
Add generic arm/arm64 secure-monitor SMCCC interface and switch PSCI code to use it. This interface will also be used by Intel Stratix 10 platform. This was not tested on arm due to lack of PSCI-enabled arm hardware lying around. Reviewed by: andrew Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D21439
2019-09-13 15:56:33 +00:00
return (psci_callfn(a, b, c, d, 0, 0, 0, 0, NULL));
Move psci_call to a header file so we can use it in other files to communicate with the firmware. Sponsored by: DARPA, AFRL
2018-06-13 15:24:07 +00:00
}
Add a driver for the ARM Power State Coordination Interface (PSCI). This handles versions 0.1 and 0.2 of the standard on 32-bit ARM. With this driver we can shutdown in QEMU. Further work is needed to turn secondary cores on on boot and to support later revisions of the specification. Submitted by: Robin Randhawa <Robin.Randhawa at ARM.com> Sponsored by: The FreeBSD Foundation
2015-04-12 13:00:58 +00:00
/*
* PSCI return codes.
*/
#define PSCI_RETVAL_SUCCESS 0
#define PSCI_RETVAL_NOT_SUPPORTED -1
#define PSCI_RETVAL_INVALID_PARAMS -2
#define PSCI_RETVAL_DENIED -3
#define PSCI_RETVAL_ALREADY_ON -4
#define PSCI_RETVAL_ON_PENDING -5
#define PSCI_RETVAL_INTERNAL_FAILURE -6
#define PSCI_RETVAL_NOT_PRESENT -7
#define PSCI_RETVAL_DISABLED -8
Create a new PSCI error code and use it to signal that starting the CPU is impossible as the PSCI firmware is missing. Sponsored by: ABT Systmes Ltd
2016-10-25 14:18:27 +00:00
/*
* Used to signal PSCI is not available, e.g. to start a CPU.
*/
#define PSCI_MISSING 1
Add a driver for the ARM Power State Coordination Interface (PSCI). This handles versions 0.1 and 0.2 of the standard on 32-bit ARM. With this driver we can shutdown in QEMU. Further work is needed to turn secondary cores on on boot and to support later revisions of the specification. Submitted by: Robin Randhawa <Robin.Randhawa at ARM.com> Sponsored by: The FreeBSD Foundation
2015-04-12 13:00:58 +00:00
/*
* PSCI function codes (as per PSCI v0.2).
*/
#ifdef __aarch64__
#define PSCI_FNID_VERSION 0x84000000
#define PSCI_FNID_CPU_SUSPEND 0xc4000001
#define PSCI_FNID_CPU_OFF 0x84000002
#define PSCI_FNID_CPU_ON 0xc4000003
#define PSCI_FNID_AFFINITY_INFO 0xc4000004
#define PSCI_FNID_MIGRATE 0xc4000005
#define PSCI_FNID_MIGRATE_INFO_TYPE 0x84000006
#define PSCI_FNID_MIGRATE_INFO_UP_CPU 0xc4000007
#define PSCI_FNID_SYSTEM_OFF 0x84000008
#define PSCI_FNID_SYSTEM_RESET 0x84000009
Add the PSCI_FEATURES function ID. This is found in PSCI 1.0 and is used to query if a given function is implemented and its features. Sponsored by: DARPA, AFRL
2018-06-13 12:26:37 +00:00
#define PSCI_FNID_FEATURES 0x8400000a
Add a driver for the ARM Power State Coordination Interface (PSCI). This handles versions 0.1 and 0.2 of the standard on 32-bit ARM. With this driver we can shutdown in QEMU. Further work is needed to turn secondary cores on on boot and to support later revisions of the specification. Submitted by: Robin Randhawa <Robin.Randhawa at ARM.com> Sponsored by: The FreeBSD Foundation
2015-04-12 13:00:58 +00:00
#else
#define PSCI_FNID_VERSION 0x84000000
#define PSCI_FNID_CPU_SUSPEND 0x84000001
#define PSCI_FNID_CPU_OFF 0x84000002
#define PSCI_FNID_CPU_ON 0x84000003
#define PSCI_FNID_AFFINITY_INFO 0x84000004
#define PSCI_FNID_MIGRATE 0x84000005
#define PSCI_FNID_MIGRATE_INFO_TYPE 0x84000006
#define PSCI_FNID_MIGRATE_INFO_UP_CPU 0x84000007
#define PSCI_FNID_SYSTEM_OFF 0x84000008
#define PSCI_FNID_SYSTEM_RESET 0x84000009
Add the PSCI_FEATURES function ID. This is found in PSCI 1.0 and is used to query if a given function is implemented and its features. Sponsored by: DARPA, AFRL
2018-06-13 12:26:37 +00:00
#define PSCI_FNID_FEATURES 0x8400000a
Add a driver for the ARM Power State Coordination Interface (PSCI). This handles versions 0.1 and 0.2 of the standard on 32-bit ARM. With this driver we can shutdown in QEMU. Further work is needed to turn secondary cores on on boot and to support later revisions of the specification. Submitted by: Robin Randhawa <Robin.Randhawa at ARM.com> Sponsored by: The FreeBSD Foundation
2015-04-12 13:00:58 +00:00
#endif
#define PSCI_VER_MAJOR(v) (((v) >> 16) & 0xFF)
#define PSCI_VER_MINOR(v) ((v) & 0xFF)
enum psci_fn {
PSCI_FN_VERSION,
PSCI_FN_CPU_SUSPEND,
PSCI_FN_CPU_OFF,
PSCI_FN_CPU_ON,
PSCI_FN_AFFINITY_INFO,
PSCI_FN_MIGRATE,
PSCI_FN_MIGRATE_INFO_TYPE,
PSCI_FN_MIGRATE_INFO_UP_CPU,
PSCI_FN_SYSTEM_OFF,
PSCI_FN_SYSTEM_RESET,
PSCI_FN_MAX
};
#endif /* _MACHINE_PSCI_H_ */
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