add all specifications

* add/sanitize all specification documents
* add/sanitize all version of a specification
* move to single vesioned documents
* rename pages to be generic names
* update template single layout to include tags and better layout

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>
jamesk-patch-1
Toshaan Bharvani 3 years ago
parent d7c1d287d1
commit 7902a5d781

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@ -1,11 +1,16 @@
---
title: 64-bit ELF v2 ABI Specification for OpenPOWER Architecture
title: 64-bit ELF ABI Specification for OpenPOWER Architecture
group: systemsoftware
publicreview: false
aliases:
- "64bitelfv2abi/"
- "64bitelfv2/"
tags:
- specifications
- systemsoftware
- abi
group: systemsoftware
- toolchain
- compiler
date: 2021-03-15
draft: false
---
@ -13,7 +18,7 @@ draft: false
The ABI (application binary interface) specification provides the definitions for the machine interface and
inter-object interfaces for the little-endian POWER architecture.

This specification defines the OpenPOWER ELF v2 ABI which is derived from and represents the first major update to the Power ABI
This specification defines the OpenPOWER ELF ABI which is derived from and represents the first major update to the Power ABI
since the original release of the IBM® RS/6000® ABI.
It was developed to make extensive use of new functions available in OpenPOWER-compliant processors.
It expects an OpenPOWER-compliant processor to implement at least Power ISA v2.07B with all OpenPOWER Architecture instruction categories
@ -22,7 +27,7 @@ as well as OpenPOWER-defined implementation characteristics for some implementat
The Executable and Linking Format (ELF) defines a linking interface for executables and shared objects in two parts :
the first part is the generic System V ABI, the second part is a processor-specific supplement.
This document, the OpenPOWER ABI for Linux Supplement for the Power Architecture 64-bit ELF V2 ABI,
is the OpenPOWER-compliant processor-specific supplement for use with ELF V2 on 64-bit IBM Power Architecture® systems.
is the OpenPOWER-compliant processor-specific supplement for use with ELF on 64-bit IBM Power Architecture® systems.
This is not a complete System V ABI supplement because it does not define any library interfaces.
This document establishes both big-endian and little-endian application binary interfaces.
OpenPOWER-compliant processors in the 64-bit Power Architecture can execute in either big-endian or little-endian mode.

@ -0,0 +1,35 @@
---
title: Advanced Accelerator Adapter Electro-Mechanical Specification
group: accelerator
publicreview: false
tags:
- specification
- accelerator
- power9
- 25gbps
- 25gio
- capi30
- opencapi
date: 2018-01-17
draft: false
---

The Advanced Accelerator Adapter Electro-Mechanical Specification defines an electro-mechanical specification for
advanced accelerator adapters within the OpenPOWER eco-system supported by IBM® POWER9™.
POWER9 modules present a 25Gbps interface organized into groups of 8 bit-lanes.
Innovation within the community is encouraged for systems that support accelerated computing and
the accelerator adapters needed to make heterogeneous / accelerated computing solutions available to the market.

This specification defines two accelerator approaches.
The first approach is a mezzanine card attached to the system planar via two connectors.
This approach is defined in Part I: Mezzanine Adapter Card.

The second approach is via cable and is defined in Cabled Interface Extension.
While the accelerator card form factor is not defined in this specification Part II : Cabled Interface Extension assumes a PCIe® card for illustration.

The electrical characteristics of the 25Gbps channel are defined in Part III: 25 Gbit/sec Electrical Channel.

This document is a Standard Track, Workgroup Specification work product owned by the 25G IO Interoperability Workgroup and
handled in compliance with the requirements outlined in the OpenPOWER Foundation Work Group (WG) Process document.
It was created using the Document Development Guide version 1.1.0.
Comments, questions, etc. can be submitted to the public mailing list for this document at <25giomode-p9_25gbps_phy@mailinglist.openpowerfoundation.org>.

@ -0,0 +1,22 @@
---
title: Coherent Accelerator Interface Architecture
group: hardwarearchitecture
reviewdraft: false
aliases:
- "coherentacceleratorinterfacearchitecture/"
- "caia1/"
- "caia2/"
tags:
- specification
- caia
- capi
- power8
- power9
date: 2016-03-15
draft: false
---

This document defines the Coherent Accelerator Interface Architecture (CAIA) for the IBM® POWER® systems.
The information contained in this document allows various CAIA-compliant accelerator implementations
to meet the needs of a wide variety of systems and applications.
Compatibility with the CAIA allows applications and system software to migrate from one implementation to another with minor changes.

@ -0,0 +1,28 @@
---
title: Field Replaceable Unit Service Interface Specification
group: hardwarearchitecture
publicreview: false
aliases:
- "openfsi/"
- "openfieldserviceinterface/"
- "fieldserviceinterface/"
tags:
- specification
- fsi
- fru
- openfsi
- hardware
date: 2016-10-13
draft: false
---

This document describes a Field Replaceable Unit (FRU) Support Interface (FSI) suited
to service all chips in a computer system via a common serial interface.
Key features are ease of use, easy scalability, robustness, and support for virtualization and
the tunneling of interrupts and DMA control signals across the interface.
FSI is superior to similar industry standard interfaces in these and many other features including speed, distance, data protection, and address range.

FSI is a point to point two wire interface operating in half duplex mode,
which is capable of supporting distances of up to 4 meters at up to 166 MHz bus frequency.
All operations are fully CRC checked to allow error recovery.
With its versatile architecture, the FSI is suited for a wide range of applications from service access to in-system test.

@ -0,0 +1,20 @@
---
title: IO Design Architecture (IODA) Specification
group: hardwarearchitecture
publicreview: false
tsth: false
tags:
- specification
- hardware
- reference
- pcie
- phb
- ioda
- power8
- power9
date: 2016-03-15
draft: false
---

The purpose of the OpenPOWER I/O Design Architecture (IODA) specification is to describe the chip architecture for key aspects of
PCIe® based host bridge (PHB) designs for IBM® POWER systems.

@ -0,0 +1,33 @@
---
title: "Instruction Set Architecture"
group: isa
publicreview: false
aliases:
- "powerisa/"
- "power31/"
- "powerisa31/"
- "power30/"
- "powerisa30/"
- "power207/"
- "powerisa207/"
tags:
- instructionsetarchitecture
- isa
- powerisa
- cores
- power8
- power9
- power10
date: 2021-08-30
draft: false
---

The Power Instruction Set Architecture (ISA) Version is a specification that describes the architecture used for the IBM POWER processor.
It defines the instructions the processors execute.
It is comprised of three books and a set of appendices.
- Book I
- Power ISA User Instruction Set Architecture, covers the base instruction set and related facilities available to the application programmer.
- Book II
- Power ISA Virtual Environment Architecture, defines the storage model and related instructions and facilities available to the application programmer.
- Book III
- Power ISA Operating Environment Architecture, defines the supervisor instructions and related facilities.

@ -0,0 +1,17 @@
---


---

The purpose of this document is to detail a stable platform architecture to be used by platforms defined by the POWER ISA Specification.

This architecture specification provides a comprehensive computer system platform-to-software interface definition,
combined with minimum system requirements, that enables the development of and software porting to
a range of compatible industry-standard computer systems from workstations through servers.
These systems are based on the requirements defined in the Power Instruction Set Architecture (ISA).
The definition supports the development of both uni-processor and multi-processor system implementations.

This document is a Standard Track, Work Group Specification work product owned by the System Software Workgroup and
handled in compliance with the requirements outlined in the OpenPOWER Foundation Work Group (WG) Process document.
It was created using the Master Template Guide version 1.0.0.
Comments, questions, etc. can be submitted to the public mailing list for this document at syssw-linux_architecture_ref@mailinglist.openpowerfoundation.org.

@ -0,0 +1,27 @@
---
title: Memory Bus Specification
group: memory
publicreview: false
alias:
- "openpowermemorybus/"
- "opmb/"
tags:
- hardware
- memory
- memorybus
date: 2021-05-26
draft: false
---

The OpenPOWER Memory Bus (OPMB) Specification defines the OpenPOWER Memory Bus Architecture.
The architecture and specification are used to develop Memory Function Units (MFU) and
to integration of those MFUs into the OpenPOWER system structure.
An MFU is a logic block developed by a member of the OpenPOWER eco-system to attach special purpose memory technology and
function processing for data stored in the memory technology.
An example of MFU might be a database function accelerator which attaches dense flash memory technology.

This figure illustrates the concept.
{{< image src="specifications/opmb-mbd.png" width="750" height="750" >}}

Comments regarding the specification content and suggestions for updates may be submitted to the following mailing list:
<memwg-opmb@mailinglist.openpowerfoundation.org>

@ -0,0 +1,16 @@
---
title: OpenCAPI POWER Platform Architecture Guide
group: systemsoftware
publicreview: false
tags:
- opencapi
- firmware
- operatingsystem
date: 2019-01-18
draft: false
---

The OpenCAPI POWER Platform Architecture (OCPA) defines an accelerator interface structure for
coherently attaching accelerators to the IBM Power Systems™ using an OpenCAPI Physical Link.
The intent is to allow implementation of a wide range of accelerators to optimally address many different market segments.
The target audience is firmware and operating system developers.

@ -2,7 +2,7 @@
title: "POWER Instruction Set Architecture 2.07"
publicreview: false
date: 2022-01-01
draft: false
draft: true
---

The Power Instruction Set Architecture (ISA) Version 2.07B is a specification that describes the architecture used

@ -2,7 +2,7 @@
title: "POWER Instruction Set Architecture 3.0"
publicreview: false
date: 2021-08-30
draft: false
draft: true
---

The Power Instruction Set Architecture (ISA) Version 3.0 is a specification that describes the architecture used for the IBM POWER9 processor.

@ -1,7 +1,7 @@
---
title: "POWER Instruction Set Architecture 3.1"
date: 2021-08-30
draft: false
draft: true
---

The Power Instruction Set Architecture (ISA) Version 3.1 is a specification that describes the architecture used for the IBM POWER10 processor.

@ -0,0 +1,40 @@
---
title: PSL / AFU Interface Specification
group: accelerator
publicreview: false
tags:
- powerservicelayer
- psl
- acceleratorfunctionalunit
- afu
- accelerator
- capi1
- capi2
- pcie4
- power8
- power9
date: 2016-03-15
draft: false
---

A CAPI based accelerator interfaces to the POWER system through a logic unit called the Power Service Layer (PSL).
The Accelerator Function Unit (AFU) contains the logic that implements the unique acceleration function.

The POWER Service Layer to Accelerator Functional Unit (PSL / AFU) interface communicates to the acceleration logic running on the FPGA.
Through this interface, the PSL offers services to the AFU.
The services offered are cache-line oriented and allow the AFU to make buffering versus throughput trade-offs.

The interface to the AFU is composed of six independent interfaces :
- AFU Command Interface is the interface through which the AFU sends service requests to the PSL.
- AFU Buffer Interface is the interface through which the PSL moves data to and from the AFU.
- PSL Response Interface is the interface through which the PSL reports status about service requests.
- AFU MMIO Interface is the interface through which software reads and writes can access registers within the AFU.
- AFU Control Interface allows the PSL job management functions to control the state of the AFU.
- AFU DMA Interface allows the AFU to send native PCIe Writes and Reads and to receive Read Completion data.

Together these interfaces allow software to control the AFU state and allow the AFU to access data in the system.

This document is a Standard Track, Work Group Specification work product owned by the Accelerator Workgroup and
handled in compliance with the requirements outlined in the OpenPOWER Foundation Work Group (WG) Process document.
It was created using the Master Template Guide version 1.0.0.
Comments, questions, etc. can be submitted to the public mailing list for this document at <aclwg-afu_psl@mailinglist.openpowerfoundation.org>.

@ -1,27 +0,0 @@
---
title: "PVIPR Compliance Specification"
tags:
- pvipr
date: 2021-03-22
draft: false
---

This document provides requirements for a compiler to demonstrate compliance with the Power Vector Intrinsics Programming Reference, version 1.0.

This document is a Standard Track, Workgroup Specification work product owned by the Compliance Workgroup
and handled in compliance with the requirements outlined in the OpenPOWER Foundation Work Group (WG) Process document.
Comments, questions, etc. can be submitted to the public mailing list for the parent specification at
<openpower-pvipr-thts@mailinglist.openpowerfoundation.org>.

The input to this specification is the following specification which describes the vector intrinsics expected to be provided
by compilers targeting PowerISA 2.07 and 3.0B or later, as implemented on POWER8 and POWER9 systems.

Power Vector Intrinsics Programming Reference (PVIPR) which is published on the resource catalog:
https://openpowerfoundation.org/?resource_lib=power-vector-intrinsic-programming-reference

The PVIPR document is organized into the following chapters:
1. Introduction to Vector Programming on Power
2. The Power Bi-Endian Vector Programming Model
3. Vector Programming Techniques
4. Vector Intrinsic Reference
5. Instruction/Intrinsic Cross-Reference

@ -0,0 +1,22 @@
---
title: Vector Intrinsics Porting Guide
group: systemsoftware
publicreview: false
tags:
- software
- vectorintrinsics
- vector
- vmx
- vsx
- altivec
- optimization
date: 2018-01-08
draft:
---

The goal of this project is to provide functional equivalents of the Intel MMX, SSE, and AVX intrinsic functions,
that are commonly used in Linux applications, and make them (or equivalents) available for the PowerPC64LE platform.

This document is a Work Group Note work product owned by the System Software Workgroup and
handled in compliance with the requirements outlined in the OpenPOWER Foundation Work Group (WG) Process document.
Comments, questions, etc. can be submitted to the public mailing list for this document at <syssw-programming-guides@mailinglist.openpowerfoundation.org>.

@ -1,7 +1,15 @@
---
title: "Power Vector Intrinsics Programming Reference Specification"
title: "Vector Intrinsics Programming Reference Specification"
group: systemsoftware
reviewdraft: false
aliases:
- "powervectorintrinsicsprogrammingreference/"
- "pvipr/"
tags:
- specification
- software
- pvipr
- vectorintrinsics
date: 2021-03-24
draft: false
---
@ -12,4 +20,4 @@ It further provides a reference for intrinsics provided by compliant compilers o

This document is a Standard Track, Work Group Specification work product owned by the System Software Workgroup
and handled in compliance with the requirements outlined in the OpenPOWER Foundation Work Group (WG) Process document.
It was created using the Master Template Guide version 1.0.0. Comments, questions, etc. can be submitted to the public forun for this document.
It was created using the Master Template Guide version 1.0.0. Comments, questions, etc. can be submitted to the public forun for this document.

@ -1,23 +1,23 @@
versions:
- number: "1.0"
- number: "2.1.0"
date: "2014-07-21"
description: "Initial release."
download: "https://files.openpower.foundation/s/XqEfC9EKNWzgneb"
- number: "1.1"
- number: "2.1.1"
date: "2015-07-16"
description: "Incorporate errata."
download: "https://files.openpower.foundation/s/aybzqzEpN5AGfXG"
- number: "1.2"
- number: "2.1.2"
date: "2016-06-13"
description: "POWER8 errata"
- number: "1.3"
- number: "2.1.3"
date: "2016-06-13"
description: "POWER9 errata"
- number: "1.4"
- number: "2.1.4"
date: "2017-01-13"
description: "Conversion from FrameMaker to DocBook, minor corrections."
download: "https://files.openpower.foundation/s/aqwWeS3qmoaDyos"
- number: "1.5"
- number: "2.1.5"
date: "2020-12-01"
description: "POWER10 support"
download: "https://files.openpower.foundation/s/cfA2oFPXbbZwEBK"

@ -0,0 +1,32 @@
versions:
- number: 0.1
date: 2017-03-13
description: Creation of electo-mechanical consolidated specification
- number: 0.2
date: 2017-04-27
description: Review updates from Dan Dreps & Jeff Brown
- number: 0.3
date: 2017-06-27
description: Added part on cable extender version
- number: 0.4
date: 2017-07-20
description: Updates from workgroup review
- number: 0.5
date: 2017-08-01
description: Updates from workgroup review
- number: 0.6
date: 2017-08-02
description: Updates to table 5.1 about ILD, ILDB, and "moving average smoothing"
- number: 0.7
date: 2017-08-08
description: Added section on Conformance, additional minor edits, removed Section 6.2 Mezzanine Net Model
- number: 0.8
date: 2017-08-17
description: public review draft
- number: 0.9
date: 2017-10-19
description: Modified mezzanine card section 2.1,2., and 2.3 to reflect a reference design and connector PN
- number: 1.0
date: 2017-11-08
description: workgroup specification
download: https://files.openpower.foundation/s/xSQPe6ypoakKQdq

@ -0,0 +1,27 @@
versions:
- number: 0.1
date: 2014-12-09
description: intital release
- number: 0.2
date: 2015-08-15
description: changes from wg review
- number: 0.3
date: 2015-10-07
description: conversion to docbook from framemaker
- number: 0.9
date: 2015-10-26
description: public review draft
- number: 1.0
date: 2016-01-13
description: workgroup specification
download: https://files.openpower.foundation/s/kpYmfrSREq8wFXR
- number: 1.1
date: 2017-06-15
description: conversion from framemaker
- number: 1.2
date: 2018-07-02
description: internal review
- number: 1.9
date: 2020-03-23
description: public review
download: https://files.openpower.foundation/s/EMFd9nPCx8N8tPr

@ -0,0 +1,17 @@
versions:
- number: 0.1
date: 2015-09-01
description: creation based on IBM FSI spec contib
- number: 0.2
date: 2015-09-02
description: comment correction as per review
- number: 0.3
date: 2016-05-05
description: public review draft
- number: 0.4
date: 2016-08-16
description: correction chapter 1 added definition & chapter 4 typo
- number: 1.0.0
date: 2016-12-12
description: workgroup specification
download:

@ -0,0 +1,15 @@
versions:
- number: 2.0.7
date: 2015-04-23
description: Creation based on IBM IODA2 Specification
- number: 2.0.8
date: 2015-08-21
description: Clean-up of typo/conversion errors
- number: 2.0.9
date: 2015-10-01
description: Clean-up of typo/conversion errors
- number: 2.1.0
date: 2016-01-13
description: Clean-up legal wording and added foundation info appendix
download: https://files.openpower.foundation/s/BcARpp9gFMXwqrL
# - number: 3.0

@ -0,0 +1,29 @@
versions:
- number: "1.1"
date: 2016-03-24
download: https://files.openpower.foundation/s/LmdoZDGkJqp679y
- number: "2.1"
date: 2016-05-04
description: conversion from IBM document
- number: "2.2"
date: 2016-10-11
description: include latest PAPR ACR 2.8
- number: "2.3"
date: 2018-07-30
description: preparation for wg review
- number: "2.4"
date: 2019-01-08
description: update from wg review
- number: "2.5"
date: 2020-04-06
description: include latest PARP ACR 2.9
- number: "2.6"
date: 2020-04-20
description: update formatting
- number: "2.7"
date: 2020-06-11
description: public review
- number: "2.9"
date: 2020-08-12
description: workgroup note
download: https://files.openpower.foundation/s/ZmtZyCGiJ2oJHim

@ -0,0 +1,27 @@
versions:
- number: 0.40
date: 2017-10-05
- number: 0.41
date: 2020-05-21
- number: 0.42
date: 2020-06-04
- number: 0.43
date: 2020-07-30
- number: 0.50
date: 2020-08-30
- number: 0.51
date: 2020-08-30
- number: 0.52
date: 2020-09-10
- number: 0.53
date: 2020-09-10
- number: 0.90
date: 2020-10-08
- number: 0.91
date: 2020-10-11
- number: 0.92
date: 2021-02-01
- number: 0.93
date: 2021-04-08
- number: 1.93
date: 2021-04-26

@ -0,0 +1,17 @@
versions:
- number: "2.6"
date: 2018-01-15
description: conversion from framemaker
- number: "2.7"
date: 2018-04-09
description: minor editing for first draft
- number: "2.8"
date: 2018-07-02
description: more editing
- number: "2.9"
date: 2018-07-26
description: public review draft
- number: "3.0"
date: 2019-01-18
description: workgroup note
download: https://files.openpower.foundation/s/DwnMymtj9BRQQ2y

@ -0,0 +1,21 @@
versions:
- number: "2.07"
date: "2013-05-03"
download: ""
description: "Initial release."
- number: "2.07b"
date: "2017-03-28"
description: "Update specification."
download: "https://ibm.ent.box.com/s/jd5w15gz301s5b5dt375mshpq9c3lh4u"
- number: "3.0b"
date: "2017-03-29"
download: "https://ibm.ent.box.com/s/1hzcwkwf8rbju5h9iyf44wm94amnlcrv"
description: "Initial release."
- number: "3.0c"
date: "2020-05-01"
download: "https://files.openpower.foundation/s/XXFoRATEzSFtdG8"
description: "Incorporate errata."
- number: "3.1"
date: "2020-05-02"
download: "https://files.openpower.foundation/s/bo728kgiWfgMHAr"
description: "Initial release."

@ -0,0 +1,25 @@
versions:
- number: 0.1.0
date: 2015-04-14
description: IBM CAPI documentation conversion
- number: 1.0.0
date: 2015-10-20
description: workgroup specification
download: https://files.openpower.foundation/s/drQqcZEcBfLEYcf
- number: 1.0.1
date: 2016-09-13
description: clarification data alignment, parity, partial cacheline
download: https://files.openpower.foundation/s/yLreYMysGbZiYiT
- number: 1.1
date: 2016-05-18
description: conversion from IBM internal documentation
- number: 1.2
date: 2016-08-02
description: updates for v2
- number: 1.3
description: Fixes to CAS Operand Alignment on Buffer Interface
date: 2017-01-16
- number: 2.0
date: 2017-07-20
description: workgroup specification
download: https://files.openpower.foundation/s/SxLFti5e4a5gBTb

@ -0,0 +1,14 @@
versions:
- number: "0.1"
date: 2017-07-26
description: initial draft from Steve Munroe
- number: "0.2"
date: 2017-09-14
description: Miscellaneous correction for spelling, grammar and punctuation
- number: "0.3"
date: 2017-10-30
description: Updates to describe issues associated with larger vector sizes and proposed solutions
- number: "1.0"
date: 2018-03-14
description: Minor updates for Published version
download: https://files.openpower.foundation/s/7FSEcPrjPH3xmp3

@ -0,0 +1,5 @@
versions:
- number: 1.0.0
date: 2020-08-11
description:
download: https://files.openpower.foundation/s/9nRDmJgfjM8MpR7

@ -2,6 +2,7 @@
{{ partial "navbar.html" . }}
{{ $filename := .File.BaseFileName }}
{{ $datafile := index $.Site.Data.specifications $filename }}
{{ $compliancefile := printf "%s/%s" "compliance" $filename }}
<main id="main" class="specifications-single">
<section id="page" class="section-bg">
<div class="row">
@ -18,22 +19,20 @@
<span class="changetime-wrapper"><span class="changetime">{{ .date }}</span></span>
{{ end }}
{{ end }}
{{ if .Param "group" }}
{{ $group := printf "%s/%s" "groups" (.Param "group") }}
{{ with $.Site.GetPage $group }}
Owned by : {{ .Title }}
{{ end }}
{{ end }}
</div>
<div class="col-lg-3"></div>
</div>
{{ if .Param "publicreview" }}
<div class="row">
<div class="col-lg-3"></div>
<div class="col-lg-6">
</div>
<div class="col-lg-3"></div>
</div>
{{ $reviewenddate := .Date.AddDate 0 0 30 }}
{{ if lt now $reviewenddate }}
<div class="row">
<div class="col-lg-3"></div>
<div class="col-lg-6">
<b>The Public Review for this document completes at close-of-business on {{ $reviewenddate.Format "Monday 2 January 2006" }}.</b>
</div>
<div class="col-lg-3"></div>
</div>
{{ end }}
{{ end }}
<div class="row">
<div class="col-lg-3"></div>
@ -41,6 +40,15 @@
<p>{{ .Content }}</p>
</div>
<div class="col-lg-3">
{{ if .Param "group" }}
{{ $group := printf "%s/%s" "groups" (.Param "group") }}
{{ with $.Site.GetPage $group }}
Owned by : <a href="{{ .Permalink }}">{{ .Title }}</a><br>
{{ end }}
{{ end }}
{{ with $.Site.GetPage $compliancefile }}
Compliance : <a href="{{ .Permalink }}">Test Suite &amp; Harness</a>
{{ end }}
{{ if $datafile.versions }}
<ul class="changelogtimeline">
{{ range sort $datafile.versions "date" "desc" }}
@ -62,17 +70,38 @@
</div>
</div>
{{ if .Params.tags }}
{{ $tags := .Params.tags }}
<div class="row">
<div class="col-lg-3"></div>
<div class="col-lg-6 text-center">
{{ range .Params.tags }}
{{ . }}
{{ end }}
{{ if not (eq (len $.Site.Taxonomies.tags) 0) }}
{{ $fontUnit := "rem" }}
{{ $largestFontSize := 3.5 }}
{{ $smallestFontSize := 0.5 }}
{{ $fontSpread := sub $largestFontSize $smallestFontSize }}
{{ $max := add (len (index $.Site.Taxonomies.tags.ByCount 0).Pages) 1 }}
{{ $min := len (index $.Site.Taxonomies.tags.ByCount.Reverse 0).Pages }}
{{ $spread := sub $max $min }}
{{ $fontStep := div $fontSpread $spread }}
{{ range $name, $taxonomy := $.Site.Taxonomies.tags }}
{{ $currentTagCount := len $taxonomy.Pages }}
{{ $currentFontSize := (add $smallestFontSize (mul (sub $currentTagCount $min) $fontStep) ) }}
{{ $count := len $taxonomy.Pages }}
{{ $weigth := div (sub (math.Log $count) (math.Log $min)) (sub (math.Log $max) (math.Log $min)) }}
{{ $currentFontSize := (add $smallestFontSize (mul (sub $largestFontSize $smallestFontSize) $weigth) ) }}
{{ range $tags }}
{{ if eq $name . }}
&nbsp;
<span style="font-size: {{ $currentFontSize }}{{ $fontUnit }}">{{ $name }}</span>
&nbsp;
{{ end }}
{{ end }}
{{ end }}
</div>
<div class="col-lg-3"></div>
{{ end }}
</div>
{{ end }}
</section>
</main>

{{ partial "footer.html" . }}

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