€•¸[      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ%/translations/zh_CN/arch/x86/amd_hsmp”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ%/translations/zh_TW/arch/x86/amd_hsmp”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ%/translations/it_IT/arch/x86/amd_hsmp”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ%/translations/ja_JP/arch/x86/amd_hsmp”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ%/translations/ko_KR/arch/x86/amd_hsmp”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ%/translations/sp_SP/arch/x86/amd_hsmp”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1h¡hhhžhhŸŒ?/var/lib/git/docbuild/linux/Documentation/arch/x86/amd_hsmp.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒAMD HSMP interface”h]”hŒAMD HSMP interface”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒ	paragraph”“”)”}”(hŒÏNewer Fam19h(model 0x00-0x1f, 0x30-0x3f, 0x90-0x9f, 0xa0-0xaf),
Fam1Ah(model 0x00-0x1f) EPYC server line of processors from AMD support
system management functionality via HSMP (Host System Management Port).”h]”hŒÏNewer Fam19h(model 0x00-0x1f, 0x30-0x3f, 0x90-0x9f, 0xa0-0xaf),
Fam1Ah(model 0x00-0x1f) EPYC server line of processors from AMD support
system management functionality via HSMP (Host System Management Port).”…””}”(hhËhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhÊ)”}”(hŒžThe Host System Management Port (HSMP) is an interface to provide
OS-level software with access to system management functions via a
set of mailbox registers.”h]”hŒžThe Host System Management Port (HSMP) is an interface to provide
OS-level software with access to system management functions via a
set of mailbox registers.”…””}”(hhÙhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhÊ)”}”(hŒéMore details on the interface can be found in chapter
"7 Host System Management Port (HSMP)" of the family/model PPR
Eg: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip”h]”(hŒ}More details on the interface can be found in chapter
â€œ7 Host System Management Port (HSMP)â€ of the family/model PPR
Eg: ”…””}”(hhçhžhhŸNh NubhŒ	reference”“”)”}”(hŒphttps://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip”h]”hŒphttps://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip”…””}”(hhñhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”hóuh1hïhhçubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhÊ)”}”(hŒIHSMP interface is supported on EPYC line of server CPUs and MI300A (APU).”h]”hŒIHSMP interface is supported on EPYC line of server CPUs and MI300A (APU).”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khh¶hžhubhµ)”}”(hhh]”(hº)”}”(hŒHSMP device”h]”hŒHSMP device”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hj  hžhhŸh³h KubhÊ)”}”(hŒ»amd_hsmp driver under drivers/platforms/x86/amd/hsmp/ has separate driver files
for ACPI object based probing, platform device based probing and for the common
code for these two drivers.”h]”hŒ»amd_hsmp driver under drivers/platforms/x86/amd/hsmp/ has separate driver files
for ACPI object based probing, platform device based probing and for the common
code for these two drivers.”…””}”(hj%  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khj  hžhubhÊ)”}”(hX(  Kconfig option CONFIG_AMD_HSMP_PLAT compiles plat.c and creates amd_hsmp.ko.
Kconfig option CONFIG_AMD_HSMP_ACPI compiles acpi.c and creates hsmp_acpi.ko.
Selecting any of these two configs automatically selects CONFIG_AMD_HSMP. This
compiles common code hsmp.c and creates hsmp_common.ko module.”h]”hX(  Kconfig option CONFIG_AMD_HSMP_PLAT compiles plat.c and creates amd_hsmp.ko.
Kconfig option CONFIG_AMD_HSMP_ACPI compiles acpi.c and creates hsmp_acpi.ko.
Selecting any of these two configs automatically selects CONFIG_AMD_HSMP. This
compiles common code hsmp.c and creates hsmp_common.ko module.”…””}”(hj3  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h Khj  hžhubhÊ)”}”(hŒtBoth the ACPI and plat drivers create the miscdevice /dev/hsmp to let
user space programs run hsmp mailbox commands.”h]”hŒtBoth the ACPI and plat drivers create the miscdevice /dev/hsmp to let
user space programs run hsmp mailbox commands.”…””}”(hjA  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K#hj  hžhubhÊ)”}”(hŒ@The ACPI object format supported by the driver is defined below.”h]”hŒ@The ACPI object format supported by the driver is defined below.”…””}”(hjO  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K&hj  hžhubhÊ)”}”(hŒH$ ls -al /dev/hsmp
crw-r--r-- 1 root root 10, 123 Jan 21 21:41 /dev/hsmp”h]”hŒH$ ls -al /dev/hsmp
crw-r--r-- 1 root root 10, 123 Jan 21 21:41 /dev/hsmp”…””}”(hj]  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K(hj  hžhubhŒdefinition_list”“”)”}”(hhh]”(hŒdefinition_list_item”“”)”}”(hŒ•Characteristics of the dev node:
* Write mode is used for running set/configure commands
* Read mode is used for running get/status monitor commands
”h]”(hŒterm”“”)”}”(hŒ Characteristics of the dev node:”h]”hŒ Characteristics of the dev node:”…””}”(hjx  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jv  hŸh³h K-hjr  ubhŒ
definition”“”)”}”(hhh]”hŒbullet_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒ5Write mode is used for running set/configure commands”h]”hÊ)”}”(hj”  h]”hŒ5Write mode is used for running set/configure commands”…””}”(hj–  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K,hj’  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj  ubj‘  )”}”(hŒ:Read mode is used for running get/status monitor commands
”h]”hÊ)”}”(hŒ9Read mode is used for running get/status monitor commands”h]”hŒ9Read mode is used for running get/status monitor commands”…””}”(hj­  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K-hj©  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj  ubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ*”uh1j‹  hŸh³h K,hjˆ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j†  hjr  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jp  hŸh³h K-hjm  ubjq  )”}”(hŒ‰Access restrictions:
* Only root user is allowed to open the file in write mode.
* The file can be opened in read mode by all the users.
”h]”(jw  )”}”(hŒAccess restrictions:”h]”hŒAccess restrictions:”…””}”(hjÙ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jv  hŸh³h K1hjÕ  ubj‡  )”}”(hhh]”jŒ  )”}”(hhh]”(j‘  )”}”(hŒ9Only root user is allowed to open the file in write mode.”h]”hÊ)”}”(hjï  h]”hŒ9Only root user is allowed to open the file in write mode.”…””}”(hjñ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K0hjí  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjê  ubj‘  )”}”(hŒ6The file can be opened in read mode by all the users.
”h]”hÊ)”}”(hŒ5The file can be opened in read mode by all the users.”h]”hŒ5The file can be opened in read mode by all the users.”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K1hj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjê  ubeh}”(h]”h ]”h"]”h$]”h&]”jÇ  jÈ  uh1j‹  hŸh³h K0hjç  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j†  hjÕ  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jp  hŸh³h K1hjm  hžhubjq  )”}”(hŒ®In-kernel integration:
* Other subsystems in the kernel can use the exported transport
  function hsmp_send_message().
* Locking across callers is taken care by the driver.

”h]”(jw  )”}”(hŒIn-kernel integration:”h]”hŒIn-kernel integration:”…””}”(hj2  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jv  hŸh³h K7hj.  ubj‡  )”}”(hhh]”jŒ  )”}”(hhh]”(j‘  )”}”(hŒ[Other subsystems in the kernel can use the exported transport
function hsmp_send_message().”h]”hÊ)”}”(hŒ[Other subsystems in the kernel can use the exported transport
function hsmp_send_message().”h]”hŒ[Other subsystems in the kernel can use the exported transport
function hsmp_send_message().”…””}”(hjJ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K4hjF  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjC  ubj‘  )”}”(hŒ5Locking across callers is taken care by the driver.

”h]”hÊ)”}”(hŒ3Locking across callers is taken care by the driver.”h]”hŒ3Locking across callers is taken care by the driver.”…””}”(hjb  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K6hj^  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hjC  ubeh}”(h]”h ]”h"]”h$]”h&]”jÇ  jÈ  uh1j‹  hŸh³h K4hj@  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j†  hj.  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jp  hŸh³h K7hjm  hžhubeh}”(h]”h ]”h"]”h$]”h&]”uh1jk  hj  hžhhŸNh Nubeh}”(h]”Œhsmp-device”ah ]”h"]”Œhsmp device”ah$]”h&]”uh1h´hh¶hžhhŸh³h Kubhµ)”}”(hhh]”(hº)”}”(hŒHSMP sysfs interface”h]”hŒHSMP sysfs interface”…””}”(hj™  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hj–  hžhhŸh³h K:ubhŒenumerated_list”“”)”}”(hhh]”j‘  )”}”(hŒMetrics table binary sysfs
”h]”hÊ)”}”(hŒMetrics table binary sysfs”h]”hŒMetrics table binary sysfs”…””}”(hj°  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K<hj¬  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j  hj©  hžhhŸh³h Nubah}”(h]”h ]”h"]”h$]”h&]”Œenumtype”Œarabic”Œprefix”hŒsuffix”Œ.”uh1j§  hj–  hžhhŸh³h K<ubhÊ)”}”(hŒ{AMD MI300A MCM provides GET_METRICS_TABLE message to retrieve
most of the system management information from SMU in one go.”h]”hŒ{AMD MI300A MCM provides GET_METRICS_TABLE message to retrieve
most of the system management information from SMU in one go.”…””}”(hjÏ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K>hj–  hžhubhÊ)”}”(hŒ¤The metrics table is made available as hexadecimal sysfs binary file
under per socket sysfs directory created at
/sys/devices/platform/amd_hsmp/socket%d/metrics_bin”h]”hŒ¤The metrics table is made available as hexadecimal sysfs binary file
under per socket sysfs directory created at
/sys/devices/platform/amd_hsmp/socket%d/metrics_bin”…””}”(hjÝ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KAhj–  hžhubhÊ)”}”(hŒ?Note: lseek() is not supported as entire metrics table is read.”h]”hŒ?Note: lseek() is not supported as entire metrics table is read.”…””}”(hjë  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KEhj–  hžhubhÊ)”}”(hŒqMetrics table definitions will be documented as part of Public PPR.
The same is defined in the amd_hsmp.h header.”h]”hŒqMetrics table definitions will be documented as part of Public PPR.
The same is defined in the amd_hsmp.h header.”…””}”(hjù  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KGhj–  hžhubeh}”(h]”Œhsmp-sysfs-interface”ah ]”h"]”Œhsmp sysfs interface”ah$]”h&]”uh1h´hh¶hžhhŸh³h K:ubhµ)”}”(hhh]”(hº)”}”(hŒACPI device object format”h]”hŒACPI device object format”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hj  hžhhŸh³h KKubhÊ)”}”(hŒ^The ACPI object format expected from the amd_hsmp driver
for socket with ID00 is given below::”h]”hŒ]The ACPI object format expected from the amd_hsmp driver
for socket with ID00 is given below:”…””}”(hj   hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KLhj  hžhubhŒliteral_block”“”)”}”(hX[  Device(HSMP)
              {
                      Name(_HID, "AMDI0097")
                      Name(_UID, "ID00")
                      Name(HSE0, 0x00000001)
                      Name(RBF0, ResourceTemplate()
                      {
                              Memory32Fixed(ReadWrite, 0xxxxxxx, 0x00100000)
                      })
                      Method(_CRS, 0, NotSerialized)
                      {
                              Return(RBF0)
                      }
                      Method(_STA, 0, NotSerialized)
                      {
                              If(LEqual(HSE0, One))
                              {
                                      Return(0x0F)
                              }
                              Else
                              {
                                      Return(Zero)
                              }
                      }
                      Name(_DSD, Package(2)
                      {
                              Buffer(0x10)
                              {
                                      0x9D, 0x61, 0x4D, 0xB7, 0x07, 0x57, 0xBD, 0x48,
                                      0xA6, 0x9F, 0x4E, 0xA2, 0x87, 0x1F, 0xC2, 0xF6
                              },
                              Package(3)
                              {
                                      Package(2) {"MsgIdOffset", 0x00010934},
                                      Package(2) {"MsgRspOffset", 0x00010980},
                                      Package(2) {"MsgArgOffset", 0x000109E0}
                              }
                      })
              }”h]”hX[  Device(HSMP)
              {
                      Name(_HID, "AMDI0097")
                      Name(_UID, "ID00")
                      Name(HSE0, 0x00000001)
                      Name(RBF0, ResourceTemplate()
                      {
                              Memory32Fixed(ReadWrite, 0xxxxxxx, 0x00100000)
                      })
                      Method(_CRS, 0, NotSerialized)
                      {
                              Return(RBF0)
                      }
                      Method(_STA, 0, NotSerialized)
                      {
                              If(LEqual(HSE0, One))
                              {
                                      Return(0x0F)
                              }
                              Else
                              {
                                      Return(Zero)
                              }
                      }
                      Name(_DSD, Package(2)
                      {
                              Buffer(0x10)
                              {
                                      0x9D, 0x61, 0x4D, 0xB7, 0x07, 0x57, 0xBD, 0x48,
                                      0xA6, 0x9F, 0x4E, 0xA2, 0x87, 0x1F, 0xC2, 0xF6
                              },
                              Package(3)
                              {
                                      Package(2) {"MsgIdOffset", 0x00010934},
                                      Package(2) {"MsgRspOffset", 0x00010980},
                                      Package(2) {"MsgArgOffset", 0x000109E0}
                              }
                      })
              }”…””}”hj0  sbah}”(h]”h ]”h"]”h$]”h&]”h±h²uh1j.  hŸh³h KOhj  hžhubeh}”(h]”Œacpi-device-object-format”ah ]”h"]”Œacpi device object format”ah$]”h&]”uh1h´hh¶hžhhŸh³h KKubhµ)”}”(hhh]”(hº)”}”(hŒ
An example”h]”hŒ
An example”…””}”(hjI  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hjF  hžhhŸh³h KyubhÊ)”}”(hŒPTo access hsmp device from a C program.
First, you need to include the headers::”h]”hŒOTo access hsmp device from a C program.
First, you need to include the headers:”…””}”(hjW  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K{hjF  hžhubj/  )”}”(hŒ#include <linux/amd_hsmp.h>”h]”hŒ#include <linux/amd_hsmp.h>”…””}”hje  sbah}”(h]”h ]”h"]”h$]”h&]”h±h²uh1j.  hŸh³h K~hjF  hžhubhÊ)”}”(hŒ1Which defines the supported messages/message IDs.”h]”hŒ1Which defines the supported messages/message IDs.”…””}”(hjs  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K€hjF  hžhubhÊ)”}”(hŒ.Next thing, open the device file, as follows::”h]”hŒ-Next thing, open the device file, as follows:”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K‚hjF  hžhubj/  )”}”(hŒŒint file;

file = open("/dev/hsmp", O_RDWR);
if (file < 0) {
  /* ERROR HANDLING; you can check errno to see what went wrong */
  exit(1);
}”h]”hŒŒint file;

file = open("/dev/hsmp", O_RDWR);
if (file < 0) {
  /* ERROR HANDLING; you can check errno to see what went wrong */
  exit(1);
}”…””}”hj  sbah}”(h]”h ]”h"]”h$]”h&]”h±h²uh1j.  hŸh³h K„hjF  hžhubhÊ)”}”(hŒThe following IOCTL is defined:”h]”hŒThe following IOCTL is defined:”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KŒhjF  hžhubjl  )”}”(hhh]”jq  )”}”(hX  ``ioctl(file, HSMP_IOCTL_CMD, struct hsmp_message *msg)``
The argument is a pointer to a::

  struct hsmp_message {
      __u32   msg_id;                         /* Message ID */
      __u16   num_args;                       /* Number of input argument words in message */
      __u16   response_sz;                    /* Number of expected output/response words */
      __u32   args[HSMP_MAX_MSG_LEN];         /* argument/response buffer */
      __u16   sock_ind;                       /* socket number */
  };
”h]”(jw  )”}”(hŒ9``ioctl(file, HSMP_IOCTL_CMD, struct hsmp_message *msg)``”h]”hŒliteral”“”)”}”(hj´  h]”hŒ5ioctl(file, HSMP_IOCTL_CMD, struct hsmp_message *msg)”…””}”(hj¸  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j¶  hj²  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jv  hŸh³h K—hj®  ubj‡  )”}”(hhh]”(hÊ)”}”(hŒ The argument is a pointer to a::”h]”hŒThe argument is a pointer to a:”…””}”(hjÎ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KhjË  ubj/  )”}”(hX—  struct hsmp_message {
    __u32   msg_id;                         /* Message ID */
    __u16   num_args;                       /* Number of input argument words in message */
    __u16   response_sz;                    /* Number of expected output/response words */
    __u32   args[HSMP_MAX_MSG_LEN];         /* argument/response buffer */
    __u16   sock_ind;                       /* socket number */
};”h]”hX—  struct hsmp_message {
    __u32   msg_id;                         /* Message ID */
    __u16   num_args;                       /* Number of input argument words in message */
    __u16   response_sz;                    /* Number of expected output/response words */
    __u32   args[HSMP_MAX_MSG_LEN];         /* argument/response buffer */
    __u16   sock_ind;                       /* socket number */
};”…””}”hjÜ  sbah}”(h]”h ]”h"]”h$]”h&]”h±h²uh1j.  hŸh³h K‘hjË  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j†  hj®  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jp  hŸh³h K—hj«  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jk  hjF  hžhhŸh³h NubhÊ)”}”(hŒ|The ioctl would return a non-zero on failure; you can read errno to see
what happened. The transaction returns 0 on success.”h]”hŒ|The ioctl would return a non-zero on failure; you can read errno to see
what happened. The transaction returns 0 on success.”…””}”(hjü  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K™hjF  hžhubhÊ)”}”(hX  More details on the interface and message definitions can be found in chapter
"7 Host System Management Port (HSMP)" of the respective family/model PPR
eg: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip”h]”(hŒ More details on the interface and message definitions can be found in chapter
â€œ7 Host System Management Port (HSMP)â€ of the respective family/model PPR
eg: ”…””}”(hj
  hžhhŸNh Nubhð)”}”(hŒphttps://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip”h]”hŒphttps://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”j  uh1hïhj
  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h KœhjF  hžhubhÊ)”}”(hŒÉUser space C-APIs are made available by linking against the esmi library,
which is provided by the E-SMS project https://www.amd.com/en/developer/e-sms.html.
See: https://github.com/amd/esmi_ib_library”h]”(hŒqUser space C-APIs are made available by linking against the esmi library,
which is provided by the E-SMS project ”…””}”(hj'  hžhhŸNh Nubhð)”}”(hŒ+https://www.amd.com/en/developer/e-sms.html”h]”hŒ+https://www.amd.com/en/developer/e-sms.html”…””}”(hj/  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”j1  uh1hïhj'  ubhŒ.
See: ”…””}”(hj'  hžhhŸNh Nubhð)”}”(hŒ&https://github.com/amd/esmi_ib_library”h]”hŒ&https://github.com/amd/esmi_ib_library”…””}”(hjB  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”jD  uh1hïhj'  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÉhŸh³h K hjF  hžhubeh}”(h]”Œ
an-example”ah ]”h"]”Œ
an example”ah$]”h&]”uh1h´hh¶hžhhŸh³h Kyubeh}”(h]”Œamd-hsmp-interface”ah ]”h"]”Œamd hsmp interface”ah$]”h&]”uh1h´hhhžhhŸh³h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h³uh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¹NŒ	generator”NŒ	datestamp”NŒsource_link”NŒ
source_url”NŒtoc_backlinks”Œentry”Œfootnote_backlinks”KŒsectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒstrip_classes”NŒreport_level”KŒ
halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ	traceback”ˆŒinput_encoding”Œ	utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”jŠ  Œerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œlanguage_code”Œen”Œrecord_dependencies”NŒconfig”NŒ	id_prefix”hŒauto_id_prefix”Œid”Œdump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”h³Œ_destination”NŒ_config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒraw_enabled”KŒline_length_limit”M'Œpep_references”NŒpep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒrfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ	tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œsmart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œdocinfo_xform”KŒsectsubtitle_xform”‰Œimage_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(jd  ja  j“  j  j  j	  jC  j@  j\  jY  uŒ	nametypes”}”(jd  ‰j“  ‰j  ‰jC  ‰j\  ‰uh}”(ja  h¶j  j  j	  j–  j@  j  jY  jF  uŒfootnote_refs”}”Œcitation_refs”}”Œautofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ	footnotes”]”Œ	citations”]”Œautofootnote_start”KŒsymbol_footnote_start”K Œ
id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
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