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Merge branch 'pdf_fixes_v1' of https://git.linuxtv.org/mchehab/experimental into mauro 

Bring in a set of post-thrashup fixes from Mauro.
This commit is contained in:
Jonathan Corbet 2019-07-22 13:51:20 -06:00
parent 143134ba49 d6f0f2f19a
commit 48ffc3d12b
62 changed files with 739 additions and 679 deletions
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5
Documentation/PCI/pci-error-recovery.rst
View File

@ -403,7 +403,7 @@ That is, the recovery API only requires that:
.. note:: .. note::
Implementation details for the powerpc platform are discussed in Implementation details for the powerpc platform are discussed in
the file Documentation/powerpc/eeh-pci-error-recovery.txt the file Documentation/powerpc/eeh-pci-error-recovery.rst
As of this writing, there is a growing list of device drivers with As of this writing, there is a growing list of device drivers with
patches implementing error recovery. Not all of these patches are in patches implementing error recovery. Not all of these patches are in
@ -422,3 +422,6 @@ That is, the recovery API only requires that:
- drivers/net/cxgb3 - drivers/net/cxgb3
- drivers/net/s2io.c - drivers/net/s2io.c
- drivers/net/qlge - drivers/net/qlge
The End
-------

2
Documentation/RCU/rculist_nulls.txt
View File

@ -1,7 +1,7 @@
Using hlist_nulls to protect read-mostly linked lists and Using hlist_nulls to protect read-mostly linked lists and
objects using SLAB_TYPESAFE_BY_RCU allocations. objects using SLAB_TYPESAFE_BY_RCU allocations.
Please read the basics in Documentation/RCU/listRCU.txt Please read the basics in Documentation/RCU/listRCU.rst
Using special makers (called 'nulls') is a convenient way Using special makers (called 'nulls') is a convenient way
to solve following problem : to solve following problem :

10
Documentation/admin-guide/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = 'Linux Kernel User Documentation'
tags.add("subproject")
latex_documents = [
('index', 'linux-user.tex', 'Linux Kernel User Documentation',
'The kernel development community', 'manual'),
]

30
Documentation/conf.py
View File

@ -16,6 +16,8 @@ import sys
import os import os
import sphinx import sphinx
from subprocess import check_output
# Get Sphinx version # Get Sphinx version
major, minor, patch = sphinx.version_info[:3] major, minor, patch = sphinx.version_info[:3]
@ -276,10 +278,21 @@ latex_elements = {
\\setsansfont{DejaVu Sans} \\setsansfont{DejaVu Sans}
\\setromanfont{DejaVu Serif} \\setromanfont{DejaVu Serif}
\\setmonofont{DejaVu Sans Mono} \\setmonofont{DejaVu Sans Mono}
''' '''
} }
# At least one book (translations) may have Asian characters
# with are only displayed if xeCJK is used
cjk_cmd = check_output(['fc-list', '--format="%{family[0]}\n"']).decode('utf-8', 'ignore')
if cjk_cmd.find("Noto Sans CJK SC") >= 0:
print ("enabling CJK for LaTeX builder")
latex_elements['preamble'] += '''
% This is needed for translations
\\usepackage{xeCJK}
\\setCJKmainfont{Noto Sans CJK SC}
'''
# Fix reference escape troubles with Sphinx 1.4.x # Fix reference escape troubles with Sphinx 1.4.x
if major == 1 and minor > 3: if major == 1 and minor > 3:
latex_elements['preamble'] += '\\renewcommand*{\\DUrole}[2]{ #2 }\n' latex_elements['preamble'] += '\\renewcommand*{\\DUrole}[2]{ #2 }\n'
@ -410,6 +423,21 @@ latex_documents = [
'The kernel development community', 'manual'), 'The kernel development community', 'manual'),
] ]
# Add all other index files from Documentation/ subdirectories
for fn in os.listdir('.'):
doc = os.path.join(fn, "index")
if os.path.exists(doc + ".rst"):
has = False
for l in latex_documents:
if l[0] == doc:
has = True
break
if not has:
latex_documents.append((doc, fn + '.tex',
'Linux %s Documentation' % fn.capitalize(),
'The kernel development community',
'manual'))
# The name of an image file (relative to this directory) to place at the top of # The name of an image file (relative to this directory) to place at the top of
# the title page. # the title page.
#latex_logo = None #latex_logo = None

10
Documentation/core-api/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Core-API Documentation"
tags.add("subproject")
latex_documents = [
('index', 'core-api.tex', project,
'The kernel development community', 'manual'),
]

10
Documentation/crypto/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = 'Linux Kernel Crypto API'
tags.add("subproject")
latex_documents = [
('index', 'crypto-api.tex', 'Linux Kernel Crypto API manual',
'The kernel development community', 'manual'),
]

10
Documentation/dev-tools/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Development tools for the kernel"
tags.add("subproject")
latex_documents = [
('index', 'dev-tools.tex', project,
'The kernel development community', 'manual'),
]

2
Documentation/devicetree/bindings/arm/idle-states.txt
View File

@ -703,4 +703,4 @@ cpus {
https://www.devicetree.org/specifications/ https://www.devicetree.org/specifications/
[6] ARM Linux Kernel documentation - Booting AArch64 Linux [6] ARM Linux Kernel documentation - Booting AArch64 Linux
Documentation/arm64/booting.txt Documentation/arm64/booting.rst

10
Documentation/doc-guide/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = 'Linux Kernel Documentation Guide'
tags.add("subproject")
latex_documents = [
('index', 'kernel-doc-guide.tex', 'Linux Kernel Documentation Guide',
'The kernel development community', 'manual'),
]

10
Documentation/driver-api/80211/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Linux 802.11 Driver Developer's Guide"
tags.add("subproject")
latex_documents = [
('index', '80211.tex', project,
'The kernel development community', 'manual'),
]

10
Documentation/driver-api/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "The Linux driver implementer's API guide"
tags.add("subproject")
latex_documents = [
('index', 'driver-api.tex', project,
'The kernel development community', 'manual'),
]

10
Documentation/driver-api/pm/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Device Power Management"
tags.add("subproject")
latex_documents = [
('index', 'pm.tex', project,
'The kernel development community', 'manual'),
]

10
Documentation/filesystems/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Linux Filesystems API"
tags.add("subproject")
latex_documents = [
('index', 'filesystems.tex', project,
'The kernel development community', 'manual'),
]

10
Documentation/gpu/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Linux GPU Driver Developer's Guide"
tags.add("subproject")
latex_documents = [
('index', 'gpu.tex', project,
'The kernel development community', 'manual'),
]

3
Documentation/index.rst
View File

@ -111,9 +111,11 @@ needed).
netlabel/index netlabel/index
networking/index networking/index
pcmcia/index pcmcia/index
power/index
target/index target/index
timers/index timers/index
watchdog/index watchdog/index
virtual/index
input/index input/index
hwmon/index hwmon/index
gpu/index gpu/index
@ -143,6 +145,7 @@ implementation.
arm64/index arm64/index
ia64/index ia64/index
m68k/index m68k/index
powerpc/index
riscv/index riscv/index
s390/index s390/index
sh/index sh/index

10
Documentation/input/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "The Linux input driver subsystem"
tags.add("subproject")
latex_documents = [
('index', 'linux-input.tex', project,
'The kernel development community', 'manual'),
]

10
Documentation/kernel-hacking/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Kernel Hacking Guides"
tags.add("subproject")
latex_documents = [
('index', 'kernel-hacking.tex', project,
'The kernel development community', 'manual'),
]

4
Documentation/locking/spinlocks.rst
View File

@ -82,7 +82,7 @@ itself. The read lock allows many concurrent readers. Anything that
**changes** the list will have to get the write lock. **changes** the list will have to get the write lock.
NOTE! RCU is better for list traversal, but requires careful NOTE! RCU is better for list traversal, but requires careful
attention to design detail (see Documentation/RCU/listRCU.txt). attention to design detail (see Documentation/RCU/listRCU.rst).
Also, you cannot "upgrade" a read-lock to a write-lock, so if you at _any_ Also, you cannot "upgrade" a read-lock to a write-lock, so if you at _any_
time need to do any changes (even if you don't do it every time), you have time need to do any changes (even if you don't do it every time), you have
@ -90,7 +90,7 @@ to get the write-lock at the very beginning.
NOTE! We are working hard to remove reader-writer spinlocks in most NOTE! We are working hard to remove reader-writer spinlocks in most
cases, so please don't add a new one without consensus. (Instead, see cases, so please don't add a new one without consensus. (Instead, see
Documentation/RCU/rcu.txt for complete information.) Documentation/RCU/rcu.rst for complete information.)
---- ----

10
Documentation/maintainer/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = 'Linux Kernel Development Documentation'
tags.add("subproject")
latex_documents = [
('index', 'maintainer.tex', 'Linux Kernel Development Documentation',
'The kernel development community', 'manual'),
]

12
Documentation/media/conf.py
View File

@ -1,12 +0,0 @@
# -*- coding: utf-8; mode: python -*-
# SPDX-License-Identifier: GPL-2.0
project = 'Linux Media Subsystem Documentation'
tags.add("subproject")
latex_documents = [
('index', 'media.tex', 'Linux Media Subsystem Documentation',
'The kernel development community', 'manual'),
]

2
Documentation/memory-barriers.txt
View File

@ -548,7 +548,7 @@ There are certain things that the Linux kernel memory barriers do not guarantee:
[*] For information on bus mastering DMA and coherency please read: [*] For information on bus mastering DMA and coherency please read:
Documentation/PCI/pci.rst Documentation/driver-api/pci/pci.rst
Documentation/DMA-API-HOWTO.txt Documentation/DMA-API-HOWTO.txt
Documentation/DMA-API.txt Documentation/DMA-API.txt

10
Documentation/networking/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Linux Networking Documentation"
tags.add("subproject")
latex_documents = [
('index', 'networking.tex', project,
'The kernel development community', 'manual'),
]

2
Documentation/power/index.rst
View File

@ -1,4 +1,4 @@
:orphan: .. SPDX-License-Identifier: GPL-2.0
================ ================
Power Management Power Management

28
Documentation/powerpc/bootwrapper.txt → Documentation/powerpc/bootwrapper.rst
View File

@ -1,5 +1,7 @@
========================
The PowerPC boot wrapper The PowerPC boot wrapper
------------------------ ========================
Copyright (C) Secret Lab Technologies Ltd. Copyright (C) Secret Lab Technologies Ltd.
PowerPC image targets compresses and wraps the kernel image (vmlinux) with PowerPC image targets compresses and wraps the kernel image (vmlinux) with
@ -21,6 +23,7 @@ it uses the wrapper script (arch/powerpc/boot/wrapper) to generate target
image. The details of the build system is discussed in the next section. image. The details of the build system is discussed in the next section.
Currently, the following image format targets exist: Currently, the following image format targets exist:
==================== ========================================================
cuImage.%: Backwards compatible uImage for older version of cuImage.%: Backwards compatible uImage for older version of
U-Boot (for versions that don't understand the device U-Boot (for versions that don't understand the device
tree). This image embeds a device tree blob inside tree). This image embeds a device tree blob inside
@ -29,31 +32,36 @@ Currently, the following image format targets exist:
with boot wrapper code that extracts data from the old with boot wrapper code that extracts data from the old
bd_info structure and loads the data into the device bd_info structure and loads the data into the device
tree before jumping into the kernel. tree before jumping into the kernel.
Because of the series of #ifdefs found in the
Because of the series of #ifdefs found in the
bd_info structure used in the old U-Boot interfaces, bd_info structure used in the old U-Boot interfaces,
cuImages are platform specific. Each specific cuImages are platform specific. Each specific
U-Boot platform has a different platform init file U-Boot platform has a different platform init file
which populates the embedded device tree with data which populates the embedded device tree with data
from the platform specific bd_info file. The platform from the platform specific bd_info file. The platform
specific cuImage platform init code can be found in specific cuImage platform init code can be found in
arch/powerpc/boot/cuboot.*.c. Selection of the correct `arch/powerpc/boot/cuboot.*.c`. Selection of the correct
cuImage init code for a specific board can be found in cuImage init code for a specific board can be found in
the wrapper structure. the wrapper structure.
dtbImage.%: Similar to zImage, except device tree blob is embedded dtbImage.%: Similar to zImage, except device tree blob is embedded
inside the image instead of provided by firmware. The inside the image instead of provided by firmware. The
output image file can be either an elf file or a flat output image file can be either an elf file or a flat
binary depending on the platform. binary depending on the platform.
dtbImages are used on systems which do not have an
dtbImages are used on systems which do not have an
interface for passing a device tree directly. interface for passing a device tree directly.
dtbImages are similar to simpleImages except that dtbImages are similar to simpleImages except that
dtbImages have platform specific code for extracting dtbImages have platform specific code for extracting
data from the board firmware, but simpleImages do not data from the board firmware, but simpleImages do not
talk to the firmware at all. talk to the firmware at all.
PlayStation 3 support uses dtbImage. So do Embedded
PlayStation 3 support uses dtbImage. So do Embedded
Planet boards using the PlanetCore firmware. Board Planet boards using the PlanetCore firmware. Board
specific initialization code is typically found in a specific initialization code is typically found in a
file named arch/powerpc/boot/<platform>.c; but this file named arch/powerpc/boot/<platform>.c; but this
can be overridden by the wrapper script. can be overridden by the wrapper script.
simpleImage.%: Firmware independent compressed image that does not simpleImage.%: Firmware independent compressed image that does not
depend on any particular firmware interface and embeds depend on any particular firmware interface and embeds
a device tree blob. This image is a flat binary that a device tree blob. This image is a flat binary that
@ -61,14 +69,16 @@ Currently, the following image format targets exist:
Firmware cannot pass any configuration data to the Firmware cannot pass any configuration data to the
kernel with this image type and it depends entirely on kernel with this image type and it depends entirely on
the embedded device tree for all information. the embedded device tree for all information.
The simpleImage is useful for booting systems with
The simpleImage is useful for booting systems with
an unknown firmware interface or for booting from an unknown firmware interface or for booting from
a debugger when no firmware is present (such as on a debugger when no firmware is present (such as on
the Xilinx Virtex platform). The only assumption that the Xilinx Virtex platform). The only assumption that
simpleImage makes is that RAM is correctly initialized simpleImage makes is that RAM is correctly initialized
and that the MMU is either off or has RAM mapped to and that the MMU is either off or has RAM mapped to
base address 0. base address 0.
simpleImage also supports inserting special platform
simpleImage also supports inserting special platform
specific initialization code to the start of the bootup specific initialization code to the start of the bootup
sequence. The virtex405 platform uses this feature to sequence. The virtex405 platform uses this feature to
ensure that the cache is invalidated before caching ensure that the cache is invalidated before caching
@ -81,9 +91,11 @@ Currently, the following image format targets exist:
named (virtex405-<board>.dts). Search the wrapper named (virtex405-<board>.dts). Search the wrapper
script for 'virtex405' and see the file script for 'virtex405' and see the file
arch/powerpc/boot/virtex405-head.S for details. arch/powerpc/boot/virtex405-head.S for details.
treeImage.%; Image format for used with OpenBIOS firmware found treeImage.%; Image format for used with OpenBIOS firmware found
on some ppc4xx hardware. This image embeds a device on some ppc4xx hardware. This image embeds a device
tree blob inside the image. tree blob inside the image.
uImage: Native image format used by U-Boot. The uImage target uImage: Native image format used by U-Boot. The uImage target
does not add any boot code. It just wraps a compressed does not add any boot code. It just wraps a compressed
vmlinux in the uImage data structure. This image vmlinux in the uImage data structure. This image
@ -91,12 +103,14 @@ Currently, the following image format targets exist:
a device tree to the kernel at boot. If using an older a device tree to the kernel at boot. If using an older
version of U-Boot, then you need to use a cuImage version of U-Boot, then you need to use a cuImage
instead. instead.
zImage.%: Image format which does not embed a device tree. zImage.%: Image format which does not embed a device tree.
Used by OpenFirmware and other firmware interfaces Used by OpenFirmware and other firmware interfaces
which are able to supply a device tree. This image which are able to supply a device tree. This image
expects firmware to provide the device tree at boot. expects firmware to provide the device tree at boot.
Typically, if you have general purpose PowerPC Typically, if you have general purpose PowerPC
hardware then you want this image format. hardware then you want this image format.
==================== ========================================================
Image types which embed a device tree blob (simpleImage, dtbImage, treeImage, Image types which embed a device tree blob (simpleImage, dtbImage, treeImage,
and cuImage) all generate the device tree blob from a file in the and cuImage) all generate the device tree blob from a file in the

23
Documentation/powerpc/cpu_families.txt → Documentation/powerpc/cpu_families.rst
View File

@ -1,3 +1,4 @@
============
CPU Families CPU Families
============ ============
@ -8,8 +9,8 @@ and are supported by arch/powerpc.
Book3S (aka sPAPR) Book3S (aka sPAPR)
------------------ ------------------
- Hash MMU - Hash MMU
- Mix of 32 & 64 bit - Mix of 32 & 64 bit::
+--------------+ +----------------+ +--------------+ +----------------+
| Old POWER | --------------> | RS64 (threads) | | Old POWER | --------------> | RS64 (threads) |
@ -108,8 +109,8 @@ Book3S (aka sPAPR)
IBM BookE IBM BookE
--------- ---------
- Software loaded TLB. - Software loaded TLB.
- All 32 bit - All 32 bit::
+--------------+ +--------------+
| 401 | | 401 |
@ -155,8 +156,8 @@ IBM BookE
Motorola/Freescale 8xx Motorola/Freescale 8xx
---------------------- ----------------------
- Software loaded with hardware assist. - Software loaded with hardware assist.
- All 32 bit - All 32 bit::
+-------------+ +-------------+
| MPC8xx Core | | MPC8xx Core |
@ -166,9 +167,9 @@ Motorola/Freescale 8xx
Freescale BookE Freescale BookE
--------------- ---------------
- Software loaded TLB. - Software loaded TLB.
- e6500 adds HW loaded indirect TLB entries. - e6500 adds HW loaded indirect TLB entries.
- Mix of 32 & 64 bit - Mix of 32 & 64 bit::
+--------------+ +--------------+
| e200 | | e200 |
@ -207,8 +208,8 @@ Freescale BookE
IBM A2 core IBM A2 core
----------- -----------
- Book3E, software loaded TLB + HW loaded indirect TLB entries. - Book3E, software loaded TLB + HW loaded indirect TLB entries.
- 64 bit - 64 bit::
+--------------+ +----------------+ +--------------+ +----------------+
| A2 core | --> | WSP | | A2 core | --> | WSP |

6
Documentation/powerpc/cpu_features.txt → Documentation/powerpc/cpu_features.rst
View File

@ -1,3 +1,7 @@
============
CPU Features
============
Hollis Blanchard <hollis@austin.ibm.com> Hollis Blanchard <hollis@austin.ibm.com>
5 Jun 2002 5 Jun 2002
@ -32,7 +36,7 @@ anyways).
After detecting the processor type, the kernel patches out sections of code After detecting the processor type, the kernel patches out sections of code
that shouldn't be used by writing nop's over it. Using cpufeatures requires that shouldn't be used by writing nop's over it. Using cpufeatures requires
just 2 macros (found in arch/powerpc/include/asm/cputable.h), as seen in head.S just 2 macros (found in arch/powerpc/include/asm/cputable.h), as seen in head.S
transfer_to_handler: transfer_to_handler::
#ifdef CONFIG_ALTIVEC #ifdef CONFIG_ALTIVEC
BEGIN_FTR_SECTION BEGIN_FTR_SECTION

46
Documentation/powerpc/cxl.txt → Documentation/powerpc/cxl.rst
View File

@ -1,3 +1,4 @@
====================================
Coherent Accelerator Interface (CXL) Coherent Accelerator Interface (CXL)
==================================== ====================================
@ -21,6 +22,8 @@ Introduction
Hardware overview Hardware overview
================= =================
::
POWER8/9 FPGA POWER8/9 FPGA
+----------+ +---------+ +----------+ +---------+
| | | | | | | |
@ -59,14 +62,16 @@ Hardware overview
the fault. The context to which this fault is serviced is based on the fault. The context to which this fault is serviced is based on
who owns that acceleration function. who owns that acceleration function.
POWER8 <-----> PSL Version 8 is compliant to the CAIA Version 1.0. - POWER8 and PSL Version 8 are compliant to the CAIA Version 1.0.
POWER9 <-----> PSL Version 9 is compliant to the CAIA Version 2.0. - POWER9 and PSL Version 9 are compliant to the CAIA Version 2.0.
This PSL Version 9 provides new features such as: This PSL Version 9 provides new features such as:
* Interaction with the nest MMU on the P9 chip. * Interaction with the nest MMU on the P9 chip.
* Native DMA support. * Native DMA support.
* Supports sending ASB_Notify messages for host thread wakeup. * Supports sending ASB_Notify messages for host thread wakeup.
* Supports Atomic operations. * Supports Atomic operations.
* .... * etc.
Cards with a PSL9 won't work on a POWER8 system and cards with a Cards with a PSL9 won't work on a POWER8 system and cards with a
PSL8 won't work on a POWER9 system. PSL8 won't work on a POWER9 system.
@ -147,7 +152,9 @@ User API
master devices. master devices.
A userspace library libcxl is available here: A userspace library libcxl is available here:
https://github.com/ibm-capi/libcxl https://github.com/ibm-capi/libcxl
This provides a C interface to this kernel API. This provides a C interface to this kernel API.
open open
@ -165,7 +172,8 @@ open
When all available contexts are allocated the open call will fail When all available contexts are allocated the open call will fail
and return -ENOSPC. and return -ENOSPC.
Note: IRQs need to be allocated for each context, which may limit Note:
IRQs need to be allocated for each context, which may limit
the number of contexts that can be created, and therefore the number of contexts that can be created, and therefore
how many times the device can be opened. The POWER8 CAPP how many times the device can be opened. The POWER8 CAPP
supports 2040 IRQs and 3 are used by the kernel, so 2037 are supports 2040 IRQs and 3 are used by the kernel, so 2037 are
@ -186,7 +194,9 @@ ioctl
updated as userspace allocates and frees memory. This ioctl updated as userspace allocates and frees memory. This ioctl
returns once the AFU context is started. returns once the AFU context is started.
Takes a pointer to a struct cxl_ioctl_start_work: Takes a pointer to a struct cxl_ioctl_start_work
::
struct cxl_ioctl_start_work { struct cxl_ioctl_start_work {
__u64 flags; __u64 flags;
@ -269,7 +279,7 @@ read
The buffer passed to read() must be at least 4K bytes. The buffer passed to read() must be at least 4K bytes.
The result of the read will be a buffer of one or more events, The result of the read will be a buffer of one or more events,
each event is of type struct cxl_event, of varying size. each event is of type struct cxl_event, of varying size::
struct cxl_event { struct cxl_event {
struct cxl_event_header header; struct cxl_event_header header;
@ -280,7 +290,9 @@ read
}; };
}; };
The struct cxl_event_header is defined as: The struct cxl_event_header is defined as
::
struct cxl_event_header { struct cxl_event_header {
__u16 type; __u16 type;
@ -307,7 +319,9 @@ read
For future extensions and padding. For future extensions and padding.
If the event type is CXL_EVENT_AFU_INTERRUPT then the event If the event type is CXL_EVENT_AFU_INTERRUPT then the event
structure is defined as: structure is defined as
::
struct cxl_event_afu_interrupt { struct cxl_event_afu_interrupt {
__u16 flags; __u16 flags;
@ -326,7 +340,9 @@ read
For future extensions and padding. For future extensions and padding.
If the event type is CXL_EVENT_DATA_STORAGE then the event If the event type is CXL_EVENT_DATA_STORAGE then the event
structure is defined as: structure is defined as
::
struct cxl_event_data_storage { struct cxl_event_data_storage {
__u16 flags; __u16 flags;
@ -356,7 +372,9 @@ read
For future extensions For future extensions
If the event type is CXL_EVENT_AFU_ERROR then the event structure If the event type is CXL_EVENT_AFU_ERROR then the event structure
is defined as: is defined as
::
struct cxl_event_afu_error { struct cxl_event_afu_error {
__u16 flags; __u16 flags;
@ -393,15 +411,15 @@ open
ioctl ioctl
----- -----
CXL_IOCTL_DOWNLOAD_IMAGE: CXL_IOCTL_DOWNLOAD_IMAGE / CXL_IOCTL_VALIDATE_IMAGE:
CXL_IOCTL_VALIDATE_IMAGE:
Starts and controls flashing a new FPGA image. Partial Starts and controls flashing a new FPGA image. Partial
reconfiguration is not supported (yet), so the image must contain reconfiguration is not supported (yet), so the image must contain
a copy of the PSL and AFU(s). Since an image can be quite large, a copy of the PSL and AFU(s). Since an image can be quite large,
the caller may have to iterate, splitting the image in smaller the caller may have to iterate, splitting the image in smaller
chunks. chunks.
Takes a pointer to a struct cxl_adapter_image: Takes a pointer to a struct cxl_adapter_image::
struct cxl_adapter_image { struct cxl_adapter_image {
__u64 flags; __u64 flags;
__u64 data; __u64 data;
@ -442,7 +460,7 @@ Udev rules
The following udev rules could be used to create a symlink to the The following udev rules could be used to create a symlink to the
most logical chardev to use in any programming mode (afuX.Yd for most logical chardev to use in any programming mode (afuX.Yd for
dedicated, afuX.Ys for afu directed), since the API is virtually dedicated, afuX.Ys for afu directed), since the API is virtually
identical for each: identical for each::
SUBSYSTEM=="cxl", ATTRS{mode}=="dedicated_process", SYMLINK="cxl/%b" SUBSYSTEM=="cxl", ATTRS{mode}=="dedicated_process", SYMLINK="cxl/%b"
SUBSYSTEM=="cxl", ATTRS{mode}=="afu_directed", \ SUBSYSTEM=="cxl", ATTRS{mode}=="afu_directed", \

10
Documentation/powerpc/cxlflash.txt → Documentation/powerpc/cxlflash.rst
View File

@ -1,3 +1,7 @@
================================
Coherent Accelerator (CXL) Flash
================================
Introduction Introduction
============ ============
@ -28,7 +32,7 @@ Introduction
responsible for the initialization of the adapter, setting up the responsible for the initialization of the adapter, setting up the
special path for user space access, and performing error recovery. It special path for user space access, and performing error recovery. It
communicates directly the Flash Accelerator Functional Unit (AFU) communicates directly the Flash Accelerator Functional Unit (AFU)
as described in Documentation/powerpc/cxl.txt. as described in Documentation/powerpc/cxl.rst.
The cxlflash driver supports two, mutually exclusive, modes of The cxlflash driver supports two, mutually exclusive, modes of
operation at the device (LUN) level: operation at the device (LUN) level:
@ -58,7 +62,7 @@ Overview
The CXL Flash Adapter Driver establishes a master context with the The CXL Flash Adapter Driver establishes a master context with the
AFU. It uses memory mapped I/O (MMIO) for this control and setup. The AFU. It uses memory mapped I/O (MMIO) for this control and setup. The
Adapter Problem Space Memory Map looks like this: Adapter Problem Space Memory Map looks like this::
+-------------------------------+ +-------------------------------+
| 512 * 64 KB User MMIO | | 512 * 64 KB User MMIO |
@ -375,7 +379,7 @@ CXL Flash Driver Host IOCTLs
Each host adapter instance that is supported by the cxlflash driver Each host adapter instance that is supported by the cxlflash driver
has a special character device associated with it to enable a set of has a special character device associated with it to enable a set of
host management function. These character devices are hosted in a host management function. These character devices are hosted in a
class dedicated for cxlflash and can be accessed via /dev/cxlflash/*. class dedicated for cxlflash and can be accessed via `/dev/cxlflash/*`.
Applications can be written to perform various functions using the Applications can be written to perform various functions using the
host ioctl APIs below. host ioctl APIs below.

15
Documentation/powerpc/DAWR-POWER9.txt → Documentation/powerpc/dawr-power9.rst
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@ -1,10 +1,11 @@
=====================
DAWR issues on POWER9 DAWR issues on POWER9
============================ =====================
On POWER9 the Data Address Watchpoint Register (DAWR) can cause a checkstop On POWER9 the Data Address Watchpoint Register (DAWR) can cause a checkstop
if it points to cache inhibited (CI) memory. Currently Linux has no way to if it points to cache inhibited (CI) memory. Currently Linux has no way to
disinguish CI memory when configuring the DAWR, so (for now) the DAWR is disinguish CI memory when configuring the DAWR, so (for now) the DAWR is
disabled by this commit: disabled by this commit::
commit 9654153158d3e0684a1bdb76dbababdb7111d5a0 commit 9654153158d3e0684a1bdb76dbababdb7111d5a0
Author: Michael Neuling <mikey@neuling.org> Author: Michael Neuling <mikey@neuling.org>
@ -12,7 +13,7 @@ disabled by this commit:
powerpc: Disable DAWR in the base POWER9 CPU features powerpc: Disable DAWR in the base POWER9 CPU features
Technical Details: Technical Details:
============================ ==================
DAWR has 6 different ways of being set. DAWR has 6 different ways of being set.
1) ptrace 1) ptrace
@ -37,7 +38,7 @@ DAWR on the migration.
For xmon, the 'bd' command will return an error on P9. For xmon, the 'bd' command will return an error on P9.
Consequences for users Consequences for users
============================ ======================
For GDB watchpoints (ie 'watch' command) on POWER9 bare metal , GDB For GDB watchpoints (ie 'watch' command) on POWER9 bare metal , GDB
will accept the command. Unfortunately since there is no hardware will accept the command. Unfortunately since there is no hardware
@ -57,8 +58,8 @@ trapped in GDB. The watchpoint is remembered, so if the guest is
migrated back to the POWER8 host, it will start working again. migrated back to the POWER8 host, it will start working again.
Force enabling the DAWR Force enabling the DAWR
============================= =======================
Kernels (since ~v5.2) have an option to force enable the DAWR via: Kernels (since ~v5.2) have an option to force enable the DAWR via::
echo Y > /sys/kernel/debug/powerpc/dawr_enable_dangerous echo Y > /sys/kernel/debug/powerpc/dawr_enable_dangerous
@ -86,5 +87,7 @@ dawr_enable_dangerous file will fail if the hypervisor doesn't support
writing the DAWR. writing the DAWR.
To double check the DAWR is working, run this kernel selftest: To double check the DAWR is working, run this kernel selftest:
tools/testing/selftests/powerpc/ptrace/ptrace-hwbreak.c tools/testing/selftests/powerpc/ptrace/ptrace-hwbreak.c
Any errors/failures/skips mean something is wrong. Any errors/failures/skips mean something is wrong.

18
Documentation/powerpc/dscr.txt → Documentation/powerpc/dscr.rst
View File

@ -1,5 +1,6 @@
DSCR (Data Stream Control Register) ===================================
================================================ DSCR (Data Stream Control Register)
===================================
DSCR register in powerpc allows user to have some control of prefetch of data DSCR register in powerpc allows user to have some control of prefetch of data
stream in the processor. Please refer to the ISA documents or related manual stream in the processor. Please refer to the ISA documents or related manual
@ -10,14 +11,17 @@ user interface.
(A) Data Structures: (A) Data Structures:
(1) thread_struct: (1) thread_struct::
dscr /* Thread DSCR value */ dscr /* Thread DSCR value */
dscr_inherit /* Thread has changed default DSCR */ dscr_inherit /* Thread has changed default DSCR */
(2) PACA: (2) PACA::
dscr_default /* per-CPU DSCR default value */ dscr_default /* per-CPU DSCR default value */
(3) sysfs.c: (3) sysfs.c::
dscr_default /* System DSCR default value */ dscr_default /* System DSCR default value */
(B) Scheduler Changes: (B) Scheduler Changes:
@ -35,8 +39,8 @@ user interface.
(C) SYSFS Interface: (C) SYSFS Interface:
Global DSCR default: /sys/devices/system/cpu/dscr_default - Global DSCR default: /sys/devices/system/cpu/dscr_default
CPU specific DSCR default: /sys/devices/system/cpu/cpuN/dscr - CPU specific DSCR default: /sys/devices/system/cpu/cpuN/dscr
Changing the global DSCR default in the sysfs will change all the CPU Changing the global DSCR default in the sysfs will change all the CPU
specific DSCR defaults immediately in their PACA structures. Again if specific DSCR defaults immediately in their PACA structures. Again if

110
Documentation/powerpc/eeh-pci-error-recovery.txt → Documentation/powerpc/eeh-pci-error-recovery.rst
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@ -1,10 +1,10 @@
==========================
PCI Bus EEH Error Recovery
==========================
Linas Vepstas <linas@austin.ibm.com>
PCI Bus EEH Error Recovery 12 January 2005
--------------------------
Linas Vepstas
<linas@austin.ibm.com>
12 January 2005
Overview: Overview:
@ -143,17 +143,17 @@ seen in /proc/ppc64/eeh (subject to change). Normally, almost
all of these occur during boot, when the PCI bus is scanned, where all of these occur during boot, when the PCI bus is scanned, where
a large number of 0xff reads are part of the bus scan procedure. a large number of 0xff reads are part of the bus scan procedure.
If a frozen slot is detected, code in If a frozen slot is detected, code in
arch/powerpc/platforms/pseries/eeh.c will print a stack trace to arch/powerpc/platforms/pseries/eeh.c will print a stack trace to
syslog (/var/log/messages). This stack trace has proven to be very syslog (/var/log/messages). This stack trace has proven to be very
useful to device-driver authors for finding out at what point the EEH useful to device-driver authors for finding out at what point the EEH
error was detected, as the error itself usually occurs slightly error was detected, as the error itself usually occurs slightly
beforehand. beforehand.
Next, it uses the Linux kernel notifier chain/work queue mechanism to Next, it uses the Linux kernel notifier chain/work queue mechanism to
allow any interested parties to find out about the failure. Device allow any interested parties to find out about the failure. Device
drivers, or other parts of the kernel, can use drivers, or other parts of the kernel, can use
eeh_register_notifier(struct notifier_block *) to find out about EEH `eeh_register_notifier(struct notifier_block *)` to find out about EEH
events. The event will include a pointer to the pci device, the events. The event will include a pointer to the pci device, the
device node and some state info. Receivers of the event can "do as device node and some state info. Receivers of the event can "do as
they wish"; the default handler will be described further in this they wish"; the default handler will be described further in this
@ -162,10 +162,13 @@ section.
To assist in the recovery of the device, eeh.c exports the To assist in the recovery of the device, eeh.c exports the
following functions: following functions:
rtas_set_slot_reset() -- assert the PCI #RST line for 1/8th of a second rtas_set_slot_reset()
rtas_configure_bridge() -- ask firmware to configure any PCI bridges assert the PCI #RST line for 1/8th of a second
rtas_configure_bridge()
ask firmware to configure any PCI bridges
located topologically under the pci slot. located topologically under the pci slot.
eeh_save_bars() and eeh_restore_bars(): save and restore the PCI eeh_save_bars() and eeh_restore_bars():
save and restore the PCI
config-space info for a device and any devices under it. config-space info for a device and any devices under it.
@ -191,7 +194,7 @@ events get delivered to user-space scripts.
Following is an example sequence of events that cause a device driver Following is an example sequence of events that cause a device driver
close function to be called during the first phase of an EEH reset. close function to be called during the first phase of an EEH reset.
The following sequence is an example of the pcnet32 device driver. The following sequence is an example of the pcnet32 device driver::
rpa_php_unconfig_pci_adapter (struct slot *) // in rpaphp_pci.c rpa_php_unconfig_pci_adapter (struct slot *) // in rpaphp_pci.c
{ {
@ -241,53 +244,54 @@ The following sequence is an example of the pcnet32 device driver.
}}}}}} }}}}}}
in drivers/pci/pci_driver.c, in drivers/pci/pci_driver.c,
struct device_driver->remove() is just pci_device_remove() struct device_driver->remove() is just pci_device_remove()
which calls struct pci_driver->remove() which is pcnet32_remove_one() which calls struct pci_driver->remove() which is pcnet32_remove_one()
which calls unregister_netdev() (in net/core/dev.c) which calls unregister_netdev() (in net/core/dev.c)
which calls dev_close() (in net/core/dev.c) which calls dev_close() (in net/core/dev.c)
which calls dev->stop() which is pcnet32_close() which calls dev->stop() which is pcnet32_close()
which then does the appropriate shutdown. which then does the appropriate shutdown.
--- ---
Following is the analogous stack trace for events sent to user-space
when the pci device is unconfigured.
rpa_php_unconfig_pci_adapter() { // in rpaphp_pci.c Following is the analogous stack trace for events sent to user-space
calls when the pci device is unconfigured::
pci_remove_bus_device (struct pci_dev *) { // in /drivers/pci/remove.c
rpa_php_unconfig_pci_adapter() { // in rpaphp_pci.c
calls calls
pci_destroy_dev (struct pci_dev *) { pci_remove_bus_device (struct pci_dev *) { // in /drivers/pci/remove.c
calls calls
device_unregister (&dev->dev) { // in /drivers/base/core.c pci_destroy_dev (struct pci_dev *) {
calls calls
device_del(struct device * dev) { // in /drivers/base/core.c device_unregister (&dev->dev) { // in /drivers/base/core.c
calls calls
kobject_del() { //in /libs/kobject.c device_del(struct device * dev) { // in /drivers/base/core.c
calls calls
kobject_uevent() { // in /libs/kobject.c kobject_del() { //in /libs/kobject.c
calls calls
kset_uevent() { // in /lib/kobject.c kobject_uevent() { // in /libs/kobject.c
calls calls
kset->uevent_ops->uevent() // which is really just kset_uevent() { // in /lib/kobject.c
a call to
dev_uevent() { // in /drivers/base/core.c
calls calls
dev->bus->uevent() which is really just a call to kset->uevent_ops->uevent() // which is really just
pci_uevent () { // in drivers/pci/hotplug.c a call to
which prints device name, etc.... dev_uevent() { // in /drivers/base/core.c
calls
dev->bus->uevent() which is really just a call to
pci_uevent () { // in drivers/pci/hotplug.c
which prints device name, etc....
}
} }
} then kobject_uevent() sends a netlink uevent to userspace
then kobject_uevent() sends a netlink uevent to userspace --> userspace uevent
--> userspace uevent (during early boot, nobody listens to netlink events and
(during early boot, nobody listens to netlink events and kobject_uevent() executes uevent_helper[], which runs the
kobject_uevent() executes uevent_helper[], which runs the event process /sbin/hotplug)
event process /sbin/hotplug) }
} }
} kobject_del() then calls sysfs_remove_dir(), which would
kobject_del() then calls sysfs_remove_dir(), which would trigger any user-space daemon that was watching /sysfs,
trigger any user-space daemon that was watching /sysfs, and notice the delete event.
and notice the delete event.
Pro's and Con's of the Current Design Pro's and Con's of the Current Design
@ -299,12 +303,12 @@ individual device drivers, so that the current design throws a wide net.
The biggest negative of the design is that it potentially disturbs The biggest negative of the design is that it potentially disturbs
network daemons and file systems that didn't need to be disturbed. network daemons and file systems that didn't need to be disturbed.
-- A minor complaint is that resetting the network card causes - A minor complaint is that resetting the network card causes
user-space back-to-back ifdown/ifup burps that potentially disturb user-space back-to-back ifdown/ifup burps that potentially disturb
network daemons, that didn't need to even know that the pci network daemons, that didn't need to even know that the pci
card was being rebooted. card was being rebooted.
-- A more serious concern is that the same reset, for SCSI devices, - A more serious concern is that the same reset, for SCSI devices,
causes havoc to mounted file systems. Scripts cannot post-facto causes havoc to mounted file systems. Scripts cannot post-facto
unmount a file system without flushing pending buffers, but this unmount a file system without flushing pending buffers, but this
is impossible, because I/O has already been stopped. Thus, is impossible, because I/O has already been stopped. Thus,
@ -322,7 +326,7 @@ network daemons and file systems that didn't need to be disturbed.
from the block layer. It would be very natural to add an EEH from the block layer. It would be very natural to add an EEH
reset into this chain of events. reset into this chain of events.
-- If a SCSI error occurs for the root device, all is lost unless - If a SCSI error occurs for the root device, all is lost unless
the sysadmin had the foresight to run /bin, /sbin, /etc, /var the sysadmin had the foresight to run /bin, /sbin, /etc, /var
and so on, out of ramdisk/tmpfs. and so on, out of ramdisk/tmpfs.
@ -330,5 +334,3 @@ network daemons and file systems that didn't need to be disturbed.
Conclusions Conclusions
----------- -----------
There's forward progress ... There's forward progress ...

117
Documentation/powerpc/firmware-assisted-dump.txt → Documentation/powerpc/firmware-assisted-dump.rst
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@ -1,7 +1,8 @@
======================
Firmware-Assisted Dump
======================
Firmware-Assisted Dump July 2011
------------------------
July 2011
The goal of firmware-assisted dump is to enable the dump of The goal of firmware-assisted dump is to enable the dump of
a crashed system, and to do so from a fully-reset system, and a crashed system, and to do so from a fully-reset system, and
@ -27,11 +28,11 @@ in production use.
Comparing with kdump or other strategies, firmware-assisted Comparing with kdump or other strategies, firmware-assisted
dump offers several strong, practical advantages: dump offers several strong, practical advantages:
-- Unlike kdump, the system has been reset, and loaded - Unlike kdump, the system has been reset, and loaded
with a fresh copy of the kernel. In particular, with a fresh copy of the kernel. In particular,
PCI and I/O devices have been reinitialized and are PCI and I/O devices have been reinitialized and are
in a clean, consistent state. in a clean, consistent state.
-- Once the dump is copied out, the memory that held the dump - Once the dump is copied out, the memory that held the dump
is immediately available to the running kernel. And therefore, is immediately available to the running kernel. And therefore,
unlike kdump, fadump doesn't need a 2nd reboot to get back unlike kdump, fadump doesn't need a 2nd reboot to get back
the system to the production configuration. the system to the production configuration.
@ -40,17 +41,18 @@ The above can only be accomplished by coordination with,
and assistance from the Power firmware. The procedure is and assistance from the Power firmware. The procedure is
as follows: as follows:
-- The first kernel registers the sections of memory with the - The first kernel registers the sections of memory with the
Power firmware for dump preservation during OS initialization. Power firmware for dump preservation during OS initialization.
These registered sections of memory are reserved by the first These registered sections of memory are reserved by the first
kernel during early boot. kernel during early boot.
-- When a system crashes, the Power firmware will save - When a system crashes, the Power firmware will save
the low memory (boot memory of size larger of 5% of system RAM the low memory (boot memory of size larger of 5% of system RAM
or 256MB) of RAM to the previous registered region. It will or 256MB) of RAM to the previous registered region. It will
also save system registers, and hardware PTE's. also save system registers, and hardware PTE's.
NOTE: The term 'boot memory' means size of the low memory chunk NOTE:
The term 'boot memory' means size of the low memory chunk
that is required for a kernel to boot successfully when that is required for a kernel to boot successfully when
booted with restricted memory. By default, the boot memory booted with restricted memory. By default, the boot memory
size will be the larger of 5% of system RAM or 256MB. size will be the larger of 5% of system RAM or 256MB.
@ -64,12 +66,12 @@ as follows:
as fadump uses a predefined offset to reserve memory as fadump uses a predefined offset to reserve memory
for boot memory dump preservation in case of a crash. for boot memory dump preservation in case of a crash.
-- After the low memory (boot memory) area has been saved, the - After the low memory (boot memory) area has been saved, the
firmware will reset PCI and other hardware state. It will firmware will reset PCI and other hardware state. It will
*not* clear the RAM. It will then launch the bootloader, as *not* clear the RAM. It will then launch the bootloader, as
normal. normal.
-- The freshly booted kernel will notice that there is a new - The freshly booted kernel will notice that there is a new
node (ibm,dump-kernel) in the device tree, indicating that node (ibm,dump-kernel) in the device tree, indicating that
there is crash data available from a previous boot. During there is crash data available from a previous boot. During
the early boot OS will reserve rest of the memory above the early boot OS will reserve rest of the memory above
@ -77,17 +79,18 @@ as follows:
size. This will make sure that the second kernel will not size. This will make sure that the second kernel will not
touch any of the dump memory area. touch any of the dump memory area.
-- User-space tools will read /proc/vmcore to obtain the contents - User-space tools will read /proc/vmcore to obtain the contents
of memory, which holds the previous crashed kernel dump in ELF of memory, which holds the previous crashed kernel dump in ELF
format. The userspace tools may copy this info to disk, or format. The userspace tools may copy this info to disk, or
network, nas, san, iscsi, etc. as desired. network, nas, san, iscsi, etc. as desired.
-- Once the userspace tool is done saving dump, it will echo - Once the userspace tool is done saving dump, it will echo
'1' to /sys/kernel/fadump_release_mem to release the reserved '1' to /sys/kernel/fadump_release_mem to release the reserved
memory back to general use, except the memory required for memory back to general use, except the memory required for
next firmware-assisted dump registration. next firmware-assisted dump registration.
e.g. e.g.::
# echo 1 > /sys/kernel/fadump_release_mem # echo 1 > /sys/kernel/fadump_release_mem
Please note that the firmware-assisted dump feature Please note that the firmware-assisted dump feature
@ -95,7 +98,7 @@ is only available on Power6 and above systems with recent
firmware versions. firmware versions.
Implementation details: Implementation details:
---------------------- -----------------------
During boot, a check is made to see if firmware supports During boot, a check is made to see if firmware supports
this feature on that particular machine. If it does, then this feature on that particular machine. If it does, then
@ -121,7 +124,7 @@ Allocator (CMA) for memory reservation if CMA is configured for kernel.
With CMA reservation this memory will be available for applications to With CMA reservation this memory will be available for applications to
use it, while kernel is prevented from using it. With this fadump will use it, while kernel is prevented from using it. With this fadump will
still be able to capture all of the kernel memory and most of the user still be able to capture all of the kernel memory and most of the user
space memory except the user pages that were present in CMA region. space memory except the user pages that were present in CMA region::
o Memory Reservation during first kernel o Memory Reservation during first kernel
@ -166,7 +169,7 @@ The tools to examine the dump will be same as the ones
used for kdump. used for kdump.
How to enable firmware-assisted dump (fadump): How to enable firmware-assisted dump (fadump):
------------------------------------- ----------------------------------------------
1. Set config option CONFIG_FA_DUMP=y and build kernel. 1. Set config option CONFIG_FA_DUMP=y and build kernel.
2. Boot into linux kernel with 'fadump=on' kernel cmdline option. 2. Boot into linux kernel with 'fadump=on' kernel cmdline option.
@ -177,19 +180,20 @@ How to enable firmware-assisted dump (fadump):
to specify size of the memory to reserve for boot memory dump to specify size of the memory to reserve for boot memory dump
preservation. preservation.
NOTE: 1. 'fadump_reserve_mem=' parameter has been deprecated. Instead NOTE:
use 'crashkernel=' to specify size of the memory to reserve 1. 'fadump_reserve_mem=' parameter has been deprecated. Instead
for boot memory dump preservation. use 'crashkernel=' to specify size of the memory to reserve
2. If firmware-assisted dump fails to reserve memory then it for boot memory dump preservation.
will fallback to existing kdump mechanism if 'crashkernel=' 2. If firmware-assisted dump fails to reserve memory then it
option is set at kernel cmdline. will fallback to existing kdump mechanism if 'crashkernel='
3. if user wants to capture all of user space memory and ok with option is set at kernel cmdline.
reserved memory not available to production system, then 3. if user wants to capture all of user space memory and ok with
'fadump=nocma' kernel parameter can be used to fallback to reserved memory not available to production system, then
old behaviour. 'fadump=nocma' kernel parameter can be used to fallback to
old behaviour.
Sysfs/debugfs files: Sysfs/debugfs files:
------------ --------------------
Firmware-assisted dump feature uses sysfs file system to hold Firmware-assisted dump feature uses sysfs file system to hold
the control files and debugfs file to display memory reserved region. the control files and debugfs file to display memory reserved region.
@ -197,20 +201,20 @@ the control files and debugfs file to display memory reserved region.
Here is the list of files under kernel sysfs: Here is the list of files under kernel sysfs:
/sys/kernel/fadump_enabled /sys/kernel/fadump_enabled
This is used to display the fadump status. This is used to display the fadump status.
0 = fadump is disabled
1 = fadump is enabled - 0 = fadump is disabled
- 1 = fadump is enabled
This interface can be used by kdump init scripts to identify if This interface can be used by kdump init scripts to identify if
fadump is enabled in the kernel and act accordingly. fadump is enabled in the kernel and act accordingly.
/sys/kernel/fadump_registered /sys/kernel/fadump_registered
This is used to display the fadump registration status as well This is used to display the fadump registration status as well
as to control (start/stop) the fadump registration. as to control (start/stop) the fadump registration.
0 = fadump is not registered.
1 = fadump is registered and ready to handle system crash. - 0 = fadump is not registered.
- 1 = fadump is registered and ready to handle system crash.
To register fadump echo 1 > /sys/kernel/fadump_registered and To register fadump echo 1 > /sys/kernel/fadump_registered and
echo 0 > /sys/kernel/fadump_registered for un-register and stop the echo 0 > /sys/kernel/fadump_registered for un-register and stop the
@ -219,13 +223,12 @@ Here is the list of files under kernel sysfs:
easily integrated with kdump service start/stop. easily integrated with kdump service start/stop.
/sys/kernel/fadump_release_mem /sys/kernel/fadump_release_mem
This file is available only when fadump is active during This file is available only when fadump is active during
second kernel. This is used to release the reserved memory second kernel. This is used to release the reserved memory
region that are held for saving crash dump. To release the region that are held for saving crash dump. To release the
reserved memory echo 1 to it: reserved memory echo 1 to it::
echo 1 > /sys/kernel/fadump_release_mem echo 1 > /sys/kernel/fadump_release_mem
After echo 1, the content of the /sys/kernel/debug/powerpc/fadump_region After echo 1, the content of the /sys/kernel/debug/powerpc/fadump_region
file will change to reflect the new memory reservations. file will change to reflect the new memory reservations.
@ -238,38 +241,39 @@ Here is the list of files under powerpc debugfs:
(Assuming debugfs is mounted on /sys/kernel/debug directory.) (Assuming debugfs is mounted on /sys/kernel/debug directory.)
/sys/kernel/debug/powerpc/fadump_region /sys/kernel/debug/powerpc/fadump_region
This file shows the reserved memory regions if fadump is This file shows the reserved memory regions if fadump is
enabled otherwise this file is empty. The output format enabled otherwise this file is empty. The output format
is: is::
<region>: [<start>-<end>] <reserved-size> bytes, Dumped: <dump-size>
<region>: [<start>-<end>] <reserved-size> bytes, Dumped: <dump-size>
e.g. e.g.
Contents when fadump is registered during first kernel Contents when fadump is registered during first kernel::
# cat /sys/kernel/debug/powerpc/fadump_region # cat /sys/kernel/debug/powerpc/fadump_region
CPU : [0x0000006ffb0000-0x0000006fff001f] 0x40020 bytes, Dumped: 0x0 CPU : [0x0000006ffb0000-0x0000006fff001f] 0x40020 bytes, Dumped: 0x0
HPTE: [0x0000006fff0020-0x0000006fff101f] 0x1000 bytes, Dumped: 0x0 HPTE: [0x0000006fff0020-0x0000006fff101f] 0x1000 bytes, Dumped: 0x0
DUMP: [0x0000006fff1020-0x0000007fff101f] 0x10000000 bytes, Dumped: 0x0 DUMP: [0x0000006fff1020-0x0000007fff101f] 0x10000000 bytes, Dumped: 0x0
Contents when fadump is active during second kernel Contents when fadump is active during second kernel::
# cat /sys/kernel/debug/powerpc/fadump_region # cat /sys/kernel/debug/powerpc/fadump_region
CPU : [0x0000006ffb0000-0x0000006fff001f] 0x40020 bytes, Dumped: 0x40020 CPU : [0x0000006ffb0000-0x0000006fff001f] 0x40020 bytes, Dumped: 0x40020
HPTE: [0x0000006fff0020-0x0000006fff101f] 0x1000 bytes, Dumped: 0x1000 HPTE: [0x0000006fff0020-0x0000006fff101f] 0x1000 bytes, Dumped: 0x1000
DUMP: [0x0000006fff1020-0x0000007fff101f] 0x10000000 bytes, Dumped: 0x10000000 DUMP: [0x0000006fff1020-0x0000007fff101f] 0x10000000 bytes, Dumped: 0x10000000
: [0x00000010000000-0x0000006ffaffff] 0x5ffb0000 bytes, Dumped: 0x5ffb0000 : [0x00000010000000-0x0000006ffaffff] 0x5ffb0000 bytes, Dumped: 0x5ffb0000
NOTE: Please refer to Documentation/filesystems/debugfs.txt on NOTE:
Please refer to Documentation/filesystems/debugfs.txt on
how to mount the debugfs filesystem. how to mount the debugfs filesystem.
TODO: TODO:
----- -----
o Need to come up with the better approach to find out more - Need to come up with the better approach to find out more
accurate boot memory size that is required for a kernel to accurate boot memory size that is required for a kernel to
boot successfully when booted with restricted memory. boot successfully when booted with restricted memory.
o The fadump implementation introduces a fadump crash info structure - The fadump implementation introduces a fadump crash info structure
in the scratch area before the ELF core header. The idea of introducing in the scratch area before the ELF core header. The idea of introducing
this structure is to pass some important crash info data to the second this structure is to pass some important crash info data to the second
kernel which will help second kernel to populate ELF core header with kernel which will help second kernel to populate ELF core header with
@ -277,7 +281,9 @@ TODO:
design implementation does not address a possibility of introducing design implementation does not address a possibility of introducing
additional fields (in future) to this structure without affecting additional fields (in future) to this structure without affecting
compatibility. Need to come up with the better approach to address this. compatibility. Need to come up with the better approach to address this.
The possible approaches are: The possible approaches are:
1. Introduce version field for version tracking, bump up the version 1. Introduce version field for version tracking, bump up the version
whenever a new field is added to the structure in future. The version whenever a new field is added to the structure in future. The version
field can be used to find out what fields are valid for the current field can be used to find out what fields are valid for the current
@ -285,8 +291,11 @@ TODO:
2. Reserve the area of predefined size (say PAGE_SIZE) for this 2. Reserve the area of predefined size (say PAGE_SIZE) for this
structure and have unused area as reserved (initialized to zero) structure and have unused area as reserved (initialized to zero)
for future field additions. for future field additions.
The advantage of approach 1 over 2 is we don't need to reserve extra space. The advantage of approach 1 over 2 is we don't need to reserve extra space.
---
Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
This document is based on the original documentation written for phyp This document is based on the original documentation written for phyp
assisted dump by Linas Vepstas and Manish Ahuja. assisted dump by Linas Vepstas and Manish Ahuja.

108
Documentation/powerpc/hvcs.txt → Documentation/powerpc/hvcs.rst
View File

@ -1,19 +1,22 @@
=========================================================================== ===============================================================
HVCS HVCS IBM "Hypervisor Virtual Console Server" Installation Guide
IBM "Hypervisor Virtual Console Server" Installation Guide ===============================================================
for Linux Kernel 2.6.4+
Copyright (C) 2004 IBM Corporation
=========================================================================== for Linux Kernel 2.6.4+
NOTE:Eight space tabs are the optimum editor setting for reading this file.
===========================================================================
Author(s) : Ryan S. Arnold <rsa@us.ibm.com> Copyright (C) 2004 IBM Corporation
Date Created: March, 02, 2004
Last Changed: August, 24, 2004
--------------------------------------------------------------------------- .. ===========================================================================
Table of contents: .. NOTE:Eight space tabs are the optimum editor setting for reading this file.
.. ===========================================================================
Author(s): Ryan S. Arnold <rsa@us.ibm.com>
Date Created: March, 02, 2004
Last Changed: August, 24, 2004
.. Table of contents:
1. Driver Introduction: 1. Driver Introduction:
2. System Requirements 2. System Requirements
@ -27,8 +30,8 @@ Table of contents:
8. Questions & Answers: 8. Questions & Answers:
9. Reporting Bugs: 9. Reporting Bugs:
---------------------------------------------------------------------------
1. Driver Introduction: 1. Driver Introduction:
=======================
This is the device driver for the IBM Hypervisor Virtual Console Server, This is the device driver for the IBM Hypervisor Virtual Console Server,
"hvcs". The IBM hvcs provides a tty driver interface to allow Linux user "hvcs". The IBM hvcs provides a tty driver interface to allow Linux user
@ -38,8 +41,8 @@ ppc64 system. Physical hardware consoles per partition are not practical
on this hardware so system consoles are accessed by this driver using on this hardware so system consoles are accessed by this driver using
firmware interfaces to virtual terminal devices. firmware interfaces to virtual terminal devices.
---------------------------------------------------------------------------
2. System Requirements: 2. System Requirements:
=======================
This device driver was written using 2.6.4 Linux kernel APIs and will only This device driver was written using 2.6.4 Linux kernel APIs and will only
build and run on kernels of this version or later. build and run on kernels of this version or later.
@ -52,8 +55,8 @@ Sysfs must be mounted on the system so that the user can determine which
major and minor numbers are associated with each vty-server. Directions major and minor numbers are associated with each vty-server. Directions
for sysfs mounting are outside the scope of this document. for sysfs mounting are outside the scope of this document.
---------------------------------------------------------------------------
3. Build Options: 3. Build Options:
=================
The hvcs driver registers itself as a tty driver. The tty layer The hvcs driver registers itself as a tty driver. The tty layer
dynamically allocates a block of major and minor numbers in a quantity dynamically allocates a block of major and minor numbers in a quantity
@ -65,11 +68,11 @@ If the default number of device entries is adequate then this driver can be
built into the kernel. If not, the default can be over-ridden by inserting built into the kernel. If not, the default can be over-ridden by inserting
the driver as a module with insmod parameters. the driver as a module with insmod parameters.
---------------------------------------------------------------------------
3.1 Built-in: 3.1 Built-in:
-------------
The following menuconfig example demonstrates selecting to build this The following menuconfig example demonstrates selecting to build this
driver into the kernel. driver into the kernel::
Device Drivers ---> Device Drivers --->
Character devices ---> Character devices --->
@ -77,11 +80,11 @@ driver into the kernel.
Begin the kernel make process. Begin the kernel make process.
---------------------------------------------------------------------------
3.2 Module: 3.2 Module:
-----------
The following menuconfig example demonstrates selecting to build this The following menuconfig example demonstrates selecting to build this
driver as a kernel module. driver as a kernel module::
Device Drivers ---> Device Drivers --->
Character devices ---> Character devices --->
@ -89,11 +92,11 @@ driver as a kernel module.
The make process will build the following kernel modules: The make process will build the following kernel modules:
hvcs.ko - hvcs.ko
hvcserver.ko - hvcserver.ko
To insert the module with the default allocation execute the following To insert the module with the default allocation execute the following
commands in the order they appear: commands in the order they appear::
insmod hvcserver.ko insmod hvcserver.ko
insmod hvcs.ko insmod hvcs.ko
@ -103,7 +106,7 @@ be inserted first, otherwise the hvcs module will not find some of the
symbols it expects. symbols it expects.
To override the default use an insmod parameter as follows (requesting 4 To override the default use an insmod parameter as follows (requesting 4
tty devices as an example): tty devices as an example)::
insmod hvcs.ko hvcs_parm_num_devs=4 insmod hvcs.ko hvcs_parm_num_devs=4
@ -115,31 +118,31 @@ source file before building.
NOTE: The length of time it takes to insmod the driver seems to be related NOTE: The length of time it takes to insmod the driver seems to be related
to the number of tty interfaces the registering driver requests. to the number of tty interfaces the registering driver requests.
In order to remove the driver module execute the following command: In order to remove the driver module execute the following command::
rmmod hvcs.ko rmmod hvcs.ko
The recommended method for installing hvcs as a module is to use depmod to The recommended method for installing hvcs as a module is to use depmod to
build a current modules.dep file in /lib/modules/`uname -r` and then build a current modules.dep file in /lib/modules/`uname -r` and then
execute: execute::
modprobe hvcs hvcs_parm_num_devs=4 modprobe hvcs hvcs_parm_num_devs=4
The modules.dep file indicates that hvcserver.ko needs to be inserted The modules.dep file indicates that hvcserver.ko needs to be inserted
before hvcs.ko and modprobe uses this file to smartly insert the modules in before hvcs.ko and modprobe uses this file to smartly insert the modules in
the proper order. the proper order.
The following modprobe command is used to remove hvcs and hvcserver in the The following modprobe command is used to remove hvcs and hvcserver in the
proper order: proper order::
modprobe -r hvcs modprobe -r hvcs
---------------------------------------------------------------------------
4. Installation: 4. Installation:
================
The tty layer creates sysfs entries which contain the major and minor The tty layer creates sysfs entries which contain the major and minor
numbers allocated for the hvcs driver. The following snippet of "tree" numbers allocated for the hvcs driver. The following snippet of "tree"
output of the sysfs directory shows where these numbers are presented: output of the sysfs directory shows where these numbers are presented::
sys/ sys/
|-- *other sysfs base dirs* |-- *other sysfs base dirs*
@ -164,7 +167,7 @@ output of the sysfs directory shows where these numbers are presented:
|-- *other sysfs base dirs* |-- *other sysfs base dirs*
For the above examples the following output is a result of cat'ing the For the above examples the following output is a result of cat'ing the
"dev" entry in the hvcs directory: "dev" entry in the hvcs directory::
Pow5:/sys/class/tty/hvcs0/ # cat dev Pow5:/sys/class/tty/hvcs0/ # cat dev
254:0 254:0
@ -184,7 +187,7 @@ systems running hvcs will already have the device entries created or udev
will do it automatically. will do it automatically.
Given the example output above, to manually create a /dev/hvcs* node entry Given the example output above, to manually create a /dev/hvcs* node entry
mknod can be used as follows: mknod can be used as follows::
mknod /dev/hvcs0 c 254 0 mknod /dev/hvcs0 c 254 0
mknod /dev/hvcs1 c 254 1 mknod /dev/hvcs1 c 254 1
@ -195,15 +198,15 @@ Using mknod to manually create the device entries makes these device nodes
persistent. Once created they will exist prior to the driver insmod. persistent. Once created they will exist prior to the driver insmod.
Attempting to connect an application to /dev/hvcs* prior to insertion of Attempting to connect an application to /dev/hvcs* prior to insertion of
the hvcs module will result in an error message similar to the following: the hvcs module will result in an error message similar to the following::
"/dev/hvcs*: No such device". "/dev/hvcs*: No such device".
NOTE: Just because there is a device node present doesn't mean that there NOTE: Just because there is a device node present doesn't mean that there
is a vty-server device configured for that node. is a vty-server device configured for that node.
---------------------------------------------------------------------------
5. Connection 5. Connection
=============
Since this driver controls devices that provide a tty interface a user can Since this driver controls devices that provide a tty interface a user can
interact with the device node entries using any standard tty-interactive interact with the device node entries using any standard tty-interactive
@ -249,7 +252,7 @@ vty-server adapter is associated with which /dev/hvcs* node a special sysfs
attribute has been added to each vty-server sysfs entry. This entry is attribute has been added to each vty-server sysfs entry. This entry is
called "index" and showing it reveals an integer that refers to the called "index" and showing it reveals an integer that refers to the
/dev/hvcs* entry to use to connect to that device. For instance cating the /dev/hvcs* entry to use to connect to that device. For instance cating the
index attribute of vty-server adapter 30000004 shows the following. index attribute of vty-server adapter 30000004 shows the following::
Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat index Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat index
2 2
@ -262,8 +265,8 @@ system the /dev/hvcs* entry that interacts with a particular vty-server
adapter is not guaranteed to remain the same across system reboots. Look adapter is not guaranteed to remain the same across system reboots. Look
in the Q & A section for more on this issue. in the Q & A section for more on this issue.
---------------------------------------------------------------------------
6. Disconnection 6. Disconnection
================
As a security feature to prevent the delivery of stale data to an As a security feature to prevent the delivery of stale data to an
unintended target the Power5 system firmware disables the fetching of data unintended target the Power5 system firmware disables the fetching of data
@ -305,7 +308,7 @@ connection between the vty-server and target vty ONLY if the vterm_state
previously read '1'. The write directive is ignored if the vterm_state previously read '1'. The write directive is ignored if the vterm_state
read '0' or if any value other than '0' was written to the vterm_state read '0' or if any value other than '0' was written to the vterm_state
attribute. The following example will show the method used for verifying attribute. The following example will show the method used for verifying
the vty-server connection status and disconnecting a vty-server connection. the vty-server connection status and disconnecting a vty-server connection::
Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat vterm_state Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat vterm_state
1 1
@ -318,12 +321,12 @@ the vty-server connection status and disconnecting a vty-server connection.
All vty-server connections are automatically terminated when the device is All vty-server connections are automatically terminated when the device is
hotplug removed and when the module is removed. hotplug removed and when the module is removed.
---------------------------------------------------------------------------
7. Configuration 7. Configuration
================
Each vty-server has a sysfs entry in the /sys/devices/vio directory, which Each vty-server has a sysfs entry in the /sys/devices/vio directory, which
is symlinked in several other sysfs tree directories, notably under the is symlinked in several other sysfs tree directories, notably under the
hvcs driver entry, which looks like the following example: hvcs driver entry, which looks like the following example::
Pow5:/sys/bus/vio/drivers/hvcs # ls Pow5:/sys/bus/vio/drivers/hvcs # ls
. .. 30000003 30000004 rescan . .. 30000003 30000004 rescan
@ -344,7 +347,7 @@ completed or was never executed.
Vty-server entries in this directory are a 32 bit partition unique unit Vty-server entries in this directory are a 32 bit partition unique unit
address that is created by firmware. An example vty-server sysfs entry address that is created by firmware. An example vty-server sysfs entry
looks like the following: looks like the following::
Pow5:/sys/bus/vio/drivers/hvcs/30000004 # ls Pow5:/sys/bus/vio/drivers/hvcs/30000004 # ls
. current_vty devspec name partner_vtys . current_vty devspec name partner_vtys
@ -352,21 +355,21 @@ looks like the following:
Each entry is provided, by default with a "name" attribute. Reading the Each entry is provided, by default with a "name" attribute. Reading the
"name" attribute will reveal the device type as shown in the following "name" attribute will reveal the device type as shown in the following
example: example::
Pow5:/sys/bus/vio/drivers/hvcs/30000003 # cat name Pow5:/sys/bus/vio/drivers/hvcs/30000003 # cat name
vty-server vty-server
Each entry is also provided, by default, with a "devspec" attribute which Each entry is also provided, by default, with a "devspec" attribute which
reveals the full device specification when read, as shown in the following reveals the full device specification when read, as shown in the following
example: example::
Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat devspec Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat devspec
/vdevice/vty-server@30000004 /vdevice/vty-server@30000004
Each vty-server sysfs dir is provided with two read-only attributes that Each vty-server sysfs dir is provided with two read-only attributes that
provide lists of easily parsed partner vty data: "partner_vtys" and provide lists of easily parsed partner vty data: "partner_vtys" and
"partner_clcs". "partner_clcs"::
Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat partner_vtys Pow5:/sys/bus/vio/drivers/hvcs/30000004 # cat partner_vtys
30000000 30000000
@ -396,7 +399,7 @@ A vty-server can only be connected to a single vty at a time. The entry,
read. read.
The current_vty can be changed by writing a valid partner clc to the entry The current_vty can be changed by writing a valid partner clc to the entry
as in the following example: as in the following example::
Pow5:/sys/bus/vio/drivers/hvcs/30000004 # echo U5112.428.10304 Pow5:/sys/bus/vio/drivers/hvcs/30000004 # echo U5112.428.10304
8A-V4-C0 > current_vty 8A-V4-C0 > current_vty
@ -408,9 +411,9 @@ currently open connection is freed.
Information on the "vterm_state" attribute was covered earlier on the Information on the "vterm_state" attribute was covered earlier on the
chapter entitled "disconnection". chapter entitled "disconnection".
---------------------------------------------------------------------------
8. Questions & Answers: 8. Questions & Answers:
=========================================================================== =======================
Q: What are the security concerns involving hvcs? Q: What are the security concerns involving hvcs?
A: There are three main security concerns: A: There are three main security concerns:
@ -429,6 +432,7 @@ A: There are three main security concerns:
partition) will experience the previously logged in session. partition) will experience the previously logged in session.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: How do I multiplex a console that I grab through hvcs so that other Q: How do I multiplex a console that I grab through hvcs so that other
people can see it: people can see it:
@ -440,6 +444,7 @@ term type "screen" to others. This means that curses based programs may
not display properly in screen sessions. not display properly in screen sessions.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: Why are the colors all messed up? Q: Why are the colors all messed up?
Q: Why are the control characters acting strange or not working? Q: Why are the control characters acting strange or not working?
Q: Why is the console output all strange and unintelligible? Q: Why is the console output all strange and unintelligible?
@ -455,6 +460,7 @@ disconnect from the console. This will ensure that the next user gets
their own TERM type set when they login. their own TERM type set when they login.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: When I try to CONNECT kermit to an hvcs device I get: Q: When I try to CONNECT kermit to an hvcs device I get:
"Sorry, can't open connection: /dev/hvcs*"What is happening? "Sorry, can't open connection: /dev/hvcs*"What is happening?
@ -490,6 +496,7 @@ A: There is not a corresponding vty-server device that maps to an existing
/dev/hvcs* entry. /dev/hvcs* entry.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: When I try to CONNECT kermit to an hvcs device I get: Q: When I try to CONNECT kermit to an hvcs device I get:
"Sorry, write access to UUCP lockfile directory denied." "Sorry, write access to UUCP lockfile directory denied."
@ -497,6 +504,7 @@ A: The /dev/hvcs* entry you have specified doesn't exist where you said it
does? Maybe you haven't inserted the module (on systems with udev). does? Maybe you haven't inserted the module (on systems with udev).
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: If I already have one Linux partition installed can I use hvcs on said Q: If I already have one Linux partition installed can I use hvcs on said
partition to provide the console for the install of a second Linux partition to provide the console for the install of a second Linux
partition? partition?
@ -505,6 +513,7 @@ A: Yes granted that your are connected to the /dev/hvcs* device using
kermit or cu or some other program that doesn't provide terminal emulation. kermit or cu or some other program that doesn't provide terminal emulation.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: Can I connect to more than one partition's console at a time using this Q: Can I connect to more than one partition's console at a time using this
driver? driver?
@ -512,6 +521,7 @@ A: Yes. Of course this means that there must be more than one vty-server
configured for this partition and each must point to a disconnected vty. configured for this partition and each must point to a disconnected vty.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: Does the hvcs driver support dynamic (hotplug) addition of devices? Q: Does the hvcs driver support dynamic (hotplug) addition of devices?
A: Yes, if you have dlpar and hotplug enabled for your system and it has A: Yes, if you have dlpar and hotplug enabled for your system and it has
@ -519,6 +529,7 @@ been built into the kernel the hvcs drivers is configured to dynamically
handle additions of new devices and removals of unused devices. handle additions of new devices and removals of unused devices.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: For some reason /dev/hvcs* doesn't map to the same vty-server adapter Q: For some reason /dev/hvcs* doesn't map to the same vty-server adapter
after a reboot. What happened? after a reboot. What happened?
@ -533,6 +544,7 @@ on how to determine which vty-server goes with which /dev/hvcs* node.
Hint; look at the sysfs "index" attribute for the vty-server. Hint; look at the sysfs "index" attribute for the vty-server.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
Q: Can I use /dev/hvcs* as a conduit to another partition and use a tty Q: Can I use /dev/hvcs* as a conduit to another partition and use a tty
device on that partition as the other end of the pipe? device on that partition as the other end of the pipe?
@ -554,7 +566,9 @@ read or write to /dev/hvcs*. Now you have a tty conduit between two
partitions. partitions.
--------------------------------------------------------------------------- ---------------------------------------------------------------------------
9. Reporting Bugs: 9. Reporting Bugs:
==================
The proper channel for reporting bugs is either through the Linux OS The proper channel for reporting bugs is either through the Linux OS
distribution company that provided your OS or by posting issues to the distribution company that provided your OS or by posting issues to the

34
Documentation/powerpc/index.rst Normal file
View File

@ -0,0 +1,34 @@
.. SPDX-License-Identifier: GPL-2.0
=======
powerpc
=======
.. toctree::
:maxdepth: 1
bootwrapper
cpu_families
cpu_features
cxl
cxlflash
dawr-power9
dscr
eeh-pci-error-recovery
firmware-assisted-dump
hvcs
isa-versions
mpc52xx
pci_iov_resource_on_powernv
pmu-ebb
ptrace
qe_firmware
syscall64-abi
transactional_memory
.. only:: subproject and html
Indices
=======
* :ref:`genindex`

15
Documentation/powerpc/isa-versions.rst
View File

@ -1,13 +1,12 @@
:orphan: ==========================
CPU to ISA Version Mapping CPU to ISA Version Mapping
========================== ==========================
Mapping of some CPU versions to relevant ISA versions. Mapping of some CPU versions to relevant ISA versions.
========= ==================== ========= ====================================================================
CPU Architecture version CPU Architecture version
========= ==================== ========= ====================================================================
Power9 Power ISA v3.0B Power9 Power ISA v3.0B
Power8 Power ISA v2.07 Power8 Power ISA v2.07
Power7 Power ISA v2.06 Power7 Power ISA v2.06
@ -24,7 +23,7 @@ PPC970 - PowerPC User Instruction Set Architecture Book I v2.01
- PowerPC Virtual Environment Architecture Book II v2.01 - PowerPC Virtual Environment Architecture Book II v2.01
- PowerPC Operating Environment Architecture Book III v2.01 - PowerPC Operating Environment Architecture Book III v2.01
- Plus Altivec/VMX ~= 2.03 - Plus Altivec/VMX ~= 2.03
========= ==================== ========= ====================================================================
Key Features Key Features
@ -60,9 +59,9 @@ Power5 No
PPC970 No PPC970 No
========== ==== ========== ====
========== ==================== ========== ====================================
CPU Transactional Memory CPU Transactional Memory
========== ==================== ========== ====================================
Power9 Yes (* see transactional_memory.txt) Power9 Yes (* see transactional_memory.txt)
Power8 Yes Power8 Yes
Power7 No Power7 No
@ -73,4 +72,4 @@ Power5++ No
Power5+ No Power5+ No
Power5 No Power5 No
PPC970 No PPC970 No
========== ==================== ========== ====================================

12
Documentation/powerpc/mpc52xx.txt → Documentation/powerpc/mpc52xx.rst
View File

@ -1,11 +1,13 @@
=============================
Linux 2.6.x on MPC52xx family Linux 2.6.x on MPC52xx family
----------------------------- =============================
For the latest info, go to http://www.246tNt.com/mpc52xx/ For the latest info, go to http://www.246tNt.com/mpc52xx/
To compile/use : To compile/use :
- U-Boot: - U-Boot::
# <edit Makefile to set ARCH=ppc & CROSS_COMPILE=... ( also EXTRAVERSION # <edit Makefile to set ARCH=ppc & CROSS_COMPILE=... ( also EXTRAVERSION
if you wish to ). if you wish to ).
# make lite5200_defconfig # make lite5200_defconfig
@ -16,7 +18,8 @@ To compile/use :
=> tftpboot 400000 pRamdisk => tftpboot 400000 pRamdisk
=> bootm 200000 400000 => bootm 200000 400000
- DBug: - DBug::
# <edit Makefile to set ARCH=ppc & CROSS_COMPILE=... ( also EXTRAVERSION # <edit Makefile to set ARCH=ppc & CROSS_COMPILE=... ( also EXTRAVERSION
if you wish to ). if you wish to ).
# make lite5200_defconfig # make lite5200_defconfig
@ -28,7 +31,8 @@ To compile/use :
DBug> dn -i zImage.initrd.lite5200 DBug> dn -i zImage.initrd.lite5200
Some remarks : Some remarks:
- The port is named mpc52xxx, and config options are PPC_MPC52xx. The MGT5100 - The port is named mpc52xxx, and config options are PPC_MPC52xx. The MGT5100
is not supported, and I'm not sure anyone is interesting in working on it is not supported, and I'm not sure anyone is interesting in working on it
so. I didn't took 5xxx because there's apparently a lot of 5xxx that have so. I didn't took 5xxx because there's apparently a lot of 5xxx that have

15
Documentation/powerpc/pci_iov_resource_on_powernv.txt → Documentation/powerpc/pci_iov_resource_on_powernv.rst
View File

@ -1,6 +1,13 @@
===================================================
PCI Express I/O Virtualization Resource on Powerenv
===================================================
Wei Yang <weiyang@linux.vnet.ibm.com> Wei Yang <weiyang@linux.vnet.ibm.com>
Benjamin Herrenschmidt <benh@au1.ibm.com> Benjamin Herrenschmidt <benh@au1.ibm.com>
Bjorn Helgaas <bhelgaas@google.com> Bjorn Helgaas <bhelgaas@google.com>
26 Aug 2014 26 Aug 2014
This document describes the requirement from hardware for PCI MMIO resource This document describes the requirement from hardware for PCI MMIO resource
@ -10,6 +17,7 @@ Endpoints and the implementation on P8 (IODA2). The next two sections talks
about considerations on enabling SRIOV on IODA2. about considerations on enabling SRIOV on IODA2.
1. Introduction to Partitionable Endpoints 1. Introduction to Partitionable Endpoints
==========================================
A Partitionable Endpoint (PE) is a way to group the various resources A Partitionable Endpoint (PE) is a way to group the various resources
associated with a device or a set of devices to provide isolation between associated with a device or a set of devices to provide isolation between
@ -35,6 +43,7 @@ is a completely separate HW entity that replicates the entire logic, so has
its own set of PEs, etc. its own set of PEs, etc.
2. Implementation of Partitionable Endpoints on P8 (IODA2) 2. Implementation of Partitionable Endpoints on P8 (IODA2)
==========================================================
P8 supports up to 256 Partitionable Endpoints per PHB. P8 supports up to 256 Partitionable Endpoints per PHB.
@ -149,6 +158,7 @@ P8 supports up to 256 Partitionable Endpoints per PHB.
sense, but we haven't done it yet. sense, but we haven't done it yet.
3. Considerations for SR-IOV on PowerKVM 3. Considerations for SR-IOV on PowerKVM
========================================
* SR-IOV Background * SR-IOV Background
@ -224,7 +234,7 @@ P8 supports up to 256 Partitionable Endpoints per PHB.
IODA supports 256 PEs, so segmented windows contain 256 segments, so if IODA supports 256 PEs, so segmented windows contain 256 segments, so if
total_VFs is less than 256, we have the situation in Figure 1.0, where total_VFs is less than 256, we have the situation in Figure 1.0, where
segments [total_VFs, 255] of the M64 window may map to some MMIO range on segments [total_VFs, 255] of the M64 window may map to some MMIO range on
other devices: other devices::
0 1 total_VFs - 1 0 1 total_VFs - 1
+------+------+- -+------+------+ +------+------+- -+------+------+
@ -243,7 +253,7 @@ P8 supports up to 256 Partitionable Endpoints per PHB.
Figure 1.0 Direct map VF(n) BAR space Figure 1.0 Direct map VF(n) BAR space
Our current solution is to allocate 256 segments even if the VF(n) BAR Our current solution is to allocate 256 segments even if the VF(n) BAR
space doesn't need that much, as shown in Figure 1.1: space doesn't need that much, as shown in Figure 1.1::
0 1 total_VFs - 1 255 0 1 total_VFs - 1 255
+------+------+- -+------+------+- -+------+------+ +------+------+- -+------+------+- -+------+------+
@ -269,6 +279,7 @@ P8 supports up to 256 Partitionable Endpoints per PHB.
responds to segments [total_VFs, 255]. responds to segments [total_VFs, 255].
4. Implications for the Generic PCI Code 4. Implications for the Generic PCI Code
========================================
The PCIe SR-IOV spec requires that the base of the VF(n) BAR space be The PCIe SR-IOV spec requires that the base of the VF(n) BAR space be
aligned to the size of an individual VF BAR. aligned to the size of an individual VF BAR.

1
Documentation/powerpc/pmu-ebb.txt → Documentation/powerpc/pmu-ebb.rst
View File

@ -1,3 +1,4 @@
========================
PMU Event Based Branches PMU Event Based Branches
======================== ========================

156
Documentation/powerpc/ptrace.rst Normal file
View File

@ -0,0 +1,156 @@
======
Ptrace
======
GDB intends to support the following hardware debug features of BookE
processors:
4 hardware breakpoints (IAC)
2 hardware watchpoints (read, write and read-write) (DAC)
2 value conditions for the hardware watchpoints (DVC)
For that, we need to extend ptrace so that GDB can query and set these
resources. Since we're extending, we're trying to create an interface
that's extendable and that covers both BookE and server processors, so
that GDB doesn't need to special-case each of them. We added the
following 3 new ptrace requests.
1. PTRACE_PPC_GETHWDEBUGINFO
============================
Query for GDB to discover the hardware debug features. The main info to
be returned here is the minimum alignment for the hardware watchpoints.
BookE processors don't have restrictions here, but server processors have
an 8-byte alignment restriction for hardware watchpoints. We'd like to avoid
adding special cases to GDB based on what it sees in AUXV.
Since we're at it, we added other useful info that the kernel can return to
GDB: this query will return the number of hardware breakpoints, hardware
watchpoints and whether it supports a range of addresses and a condition.
The query will fill the following structure provided by the requesting process::
struct ppc_debug_info {
unit32_t version;
unit32_t num_instruction_bps;
unit32_t num_data_bps;
unit32_t num_condition_regs;
unit32_t data_bp_alignment;
unit32_t sizeof_condition; /* size of the DVC register */
uint64_t features; /* bitmask of the individual flags */
};
features will have bits indicating whether there is support for::
#define PPC_DEBUG_FEATURE_INSN_BP_RANGE 0x1
#define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x2
#define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x4
#define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x8
#define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x10
2. PTRACE_SETHWDEBUG
Sets a hardware breakpoint or watchpoint, according to the provided structure::
struct ppc_hw_breakpoint {
uint32_t version;
#define PPC_BREAKPOINT_TRIGGER_EXECUTE 0x1
#define PPC_BREAKPOINT_TRIGGER_READ 0x2
#define PPC_BREAKPOINT_TRIGGER_WRITE 0x4
uint32_t trigger_type; /* only some combinations allowed */
#define PPC_BREAKPOINT_MODE_EXACT 0x0
#define PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE 0x1
#define PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE 0x2
#define PPC_BREAKPOINT_MODE_MASK 0x3
uint32_t addr_mode; /* address match mode */
#define PPC_BREAKPOINT_CONDITION_MODE 0x3
#define PPC_BREAKPOINT_CONDITION_NONE 0x0
#define PPC_BREAKPOINT_CONDITION_AND 0x1
#define PPC_BREAKPOINT_CONDITION_EXACT 0x1 /* different name for the same thing as above */
#define PPC_BREAKPOINT_CONDITION_OR 0x2
#define PPC_BREAKPOINT_CONDITION_AND_OR 0x3
#define PPC_BREAKPOINT_CONDITION_BE_ALL 0x00ff0000 /* byte enable bits */
#define PPC_BREAKPOINT_CONDITION_BE(n) (1<<((n)+16))
uint32_t condition_mode; /* break/watchpoint condition flags */
uint64_t addr;
uint64_t addr2;
uint64_t condition_value;
};
A request specifies one event, not necessarily just one register to be set.
For instance, if the request is for a watchpoint with a condition, both the
DAC and DVC registers will be set in the same request.
With this GDB can ask for all kinds of hardware breakpoints and watchpoints
that the BookE supports. COMEFROM breakpoints available in server processors
are not contemplated, but that is out of the scope of this work.
ptrace will return an integer (handle) uniquely identifying the breakpoint or
watchpoint just created. This integer will be used in the PTRACE_DELHWDEBUG
request to ask for its removal. Return -ENOSPC if the requested breakpoint
can't be allocated on the registers.
Some examples of using the structure to:
- set a breakpoint in the first breakpoint register::
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_EXECUTE;
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) address;
p.addr2 = 0;
p.condition_value = 0;
- set a watchpoint which triggers on reads in the second watchpoint register::
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_READ;
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) address;
p.addr2 = 0;
p.condition_value = 0;
- set a watchpoint which triggers only with a specific value::
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_READ;
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_AND | PPC_BREAKPOINT_CONDITION_BE_ALL;
p.addr = (uint64_t) address;
p.addr2 = 0;
p.condition_value = (uint64_t) condition;
- set a ranged hardware breakpoint::
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_EXECUTE;
p.addr_mode = PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) begin_range;
p.addr2 = (uint64_t) end_range;
p.condition_value = 0;
- set a watchpoint in server processors (BookS)::
p.version = 1;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_RW;
p.addr_mode = PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE;
or
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) begin_range;
/* For PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE addr2 needs to be specified, where
* addr2 - addr <= 8 Bytes.
*/
p.addr2 = (uint64_t) end_range;
p.condition_value = 0;
3. PTRACE_DELHWDEBUG
Takes an integer which identifies an existing breakpoint or watchpoint
(i.e., the value returned from PTRACE_SETHWDEBUG), and deletes the
corresponding breakpoint or watchpoint..

151
Documentation/powerpc/ptrace.txt
View File

@ -1,151 +0,0 @@
GDB intends to support the following hardware debug features of BookE
processors:
4 hardware breakpoints (IAC)
2 hardware watchpoints (read, write and read-write) (DAC)
2 value conditions for the hardware watchpoints (DVC)
For that, we need to extend ptrace so that GDB can query and set these
resources. Since we're extending, we're trying to create an interface
that's extendable and that covers both BookE and server processors, so
that GDB doesn't need to special-case each of them. We added the
following 3 new ptrace requests.
1. PTRACE_PPC_GETHWDEBUGINFO
Query for GDB to discover the hardware debug features. The main info to
be returned here is the minimum alignment for the hardware watchpoints.
BookE processors don't have restrictions here, but server processors have
an 8-byte alignment restriction for hardware watchpoints. We'd like to avoid
adding special cases to GDB based on what it sees in AUXV.
Since we're at it, we added other useful info that the kernel can return to
GDB: this query will return the number of hardware breakpoints, hardware
watchpoints and whether it supports a range of addresses and a condition.
The query will fill the following structure provided by the requesting process:
struct ppc_debug_info {
unit32_t version;
unit32_t num_instruction_bps;
unit32_t num_data_bps;
unit32_t num_condition_regs;
unit32_t data_bp_alignment;
unit32_t sizeof_condition; /* size of the DVC register */
uint64_t features; /* bitmask of the individual flags */
};
features will have bits indicating whether there is support for:
#define PPC_DEBUG_FEATURE_INSN_BP_RANGE 0x1
#define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x2
#define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x4
#define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x8
#define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x10
2. PTRACE_SETHWDEBUG
Sets a hardware breakpoint or watchpoint, according to the provided structure:
struct ppc_hw_breakpoint {
uint32_t version;
#define PPC_BREAKPOINT_TRIGGER_EXECUTE 0x1
#define PPC_BREAKPOINT_TRIGGER_READ 0x2
#define PPC_BREAKPOINT_TRIGGER_WRITE 0x4
uint32_t trigger_type; /* only some combinations allowed */
#define PPC_BREAKPOINT_MODE_EXACT 0x0
#define PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE 0x1
#define PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE 0x2
#define PPC_BREAKPOINT_MODE_MASK 0x3
uint32_t addr_mode; /* address match mode */
#define PPC_BREAKPOINT_CONDITION_MODE 0x3
#define PPC_BREAKPOINT_CONDITION_NONE 0x0
#define PPC_BREAKPOINT_CONDITION_AND 0x1
#define PPC_BREAKPOINT_CONDITION_EXACT 0x1 /* different name for the same thing as above */
#define PPC_BREAKPOINT_CONDITION_OR 0x2
#define PPC_BREAKPOINT_CONDITION_AND_OR 0x3
#define PPC_BREAKPOINT_CONDITION_BE_ALL 0x00ff0000 /* byte enable bits */
#define PPC_BREAKPOINT_CONDITION_BE(n) (1<<((n)+16))
uint32_t condition_mode; /* break/watchpoint condition flags */
uint64_t addr;
uint64_t addr2;
uint64_t condition_value;
};
A request specifies one event, not necessarily just one register to be set.
For instance, if the request is for a watchpoint with a condition, both the
DAC and DVC registers will be set in the same request.
With this GDB can ask for all kinds of hardware breakpoints and watchpoints
that the BookE supports. COMEFROM breakpoints available in server processors
are not contemplated, but that is out of the scope of this work.
ptrace will return an integer (handle) uniquely identifying the breakpoint or
watchpoint just created. This integer will be used in the PTRACE_DELHWDEBUG
request to ask for its removal. Return -ENOSPC if the requested breakpoint
can't be allocated on the registers.
Some examples of using the structure to:
- set a breakpoint in the first breakpoint register
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_EXECUTE;
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) address;
p.addr2 = 0;
p.condition_value = 0;
- set a watchpoint which triggers on reads in the second watchpoint register
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_READ;
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) address;
p.addr2 = 0;
p.condition_value = 0;
- set a watchpoint which triggers only with a specific value
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_READ;
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_AND | PPC_BREAKPOINT_CONDITION_BE_ALL;
p.addr = (uint64_t) address;
p.addr2 = 0;
p.condition_value = (uint64_t) condition;
- set a ranged hardware breakpoint
p.version = PPC_DEBUG_CURRENT_VERSION;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_EXECUTE;
p.addr_mode = PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) begin_range;
p.addr2 = (uint64_t) end_range;
p.condition_value = 0;
- set a watchpoint in server processors (BookS)
p.version = 1;
p.trigger_type = PPC_BREAKPOINT_TRIGGER_RW;
p.addr_mode = PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE;
or
p.addr_mode = PPC_BREAKPOINT_MODE_EXACT;
p.condition_mode = PPC_BREAKPOINT_CONDITION_NONE;
p.addr = (uint64_t) begin_range;
/* For PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE addr2 needs to be specified, where
* addr2 - addr <= 8 Bytes.
*/
p.addr2 = (uint64_t) end_range;
p.condition_value = 0;
3. PTRACE_DELHWDEBUG
Takes an integer which identifies an existing breakpoint or watchpoint
(i.e., the value returned from PTRACE_SETHWDEBUG), and deletes the
corresponding breakpoint or watchpoint..

37
Documentation/powerpc/qe_firmware.txt → Documentation/powerpc/qe_firmware.rst
View File

@ -1,23 +1,23 @@
Freescale QUICC Engine Firmware Uploading =========================================
----------------------------------------- Freescale QUICC Engine Firmware Uploading
=========================================
(c) 2007 Timur Tabi <timur at freescale.com>, (c) 2007 Timur Tabi <timur at freescale.com>,
Freescale Semiconductor Freescale Semiconductor
Table of Contents .. Table of Contents
=================
I - Software License for Firmware I - Software License for Firmware
II - Microcode Availability II - Microcode Availability
III - Description and Terminology III - Description and Terminology
IV - Microcode Programming Details IV - Microcode Programming Details
V - Firmware Structure Layout V - Firmware Structure Layout
VI - Sample Code for Creating Firmware Files VI - Sample Code for Creating Firmware Files
Revision Information Revision Information
==================== ====================
@ -39,7 +39,7 @@ http://opensource.freescale.com. For other firmware files, please contact
your Freescale representative or your operating system vendor. your Freescale representative or your operating system vendor.
III - Description and Terminology III - Description and Terminology
================================ =================================
In this document, the term 'microcode' refers to the sequence of 32-bit In this document, the term 'microcode' refers to the sequence of 32-bit
integers that compose the actual QE microcode. integers that compose the actual QE microcode.
@ -89,7 +89,7 @@ being fixed in the RAM package utilizing they should be activated. This data
structure signals the microcode which of these virtual traps is active. structure signals the microcode which of these virtual traps is active.
This structure contains 6 words that the application should copy to some This structure contains 6 words that the application should copy to some
specific been defined. This table describes the structure. specific been defined. This table describes the structure::
--------------------------------------------------------------- ---------------------------------------------------------------
| Offset in | | Destination Offset | Size of | | Offset in | | Destination Offset | Size of |
@ -119,7 +119,7 @@ Extended Modes
This is a double word bit array (64 bits) that defines special functionality This is a double word bit array (64 bits) that defines special functionality
which has an impact on the software drivers. Each bit has its own impact which has an impact on the software drivers. Each bit has its own impact
and has special instructions for the s/w associated with it. This structure is and has special instructions for the s/w associated with it. This structure is
described in this table: described in this table::
----------------------------------------------------------------------- -----------------------------------------------------------------------
| Bit # | Name | Description | | Bit # | Name | Description |
@ -220,7 +220,8 @@ The 'model' field is a 16-bit number that matches the actual SOC. The
'major' and 'minor' fields are the major and minor revision numbers, 'major' and 'minor' fields are the major and minor revision numbers,
respectively, of the SOC. respectively, of the SOC.
For example, to match the 8323, revision 1.0: For example, to match the 8323, revision 1.0::
soc.model = 8323 soc.model = 8323
soc.major = 1 soc.major = 1
soc.minor = 0 soc.minor = 0
@ -273,10 +274,10 @@ library and available to any driver that calles qe_get_firmware_info().
'reserved'. 'reserved'.
After the last microcode is a 32-bit CRC. It can be calculated using After the last microcode is a 32-bit CRC. It can be calculated using
this algorithm: this algorithm::
u32 crc32(const u8 *p, unsigned int len) u32 crc32(const u8 *p, unsigned int len)
{ {
unsigned int i; unsigned int i;
u32 crc = 0; u32 crc = 0;
@ -286,7 +287,7 @@ u32 crc32(const u8 *p, unsigned int len)
crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0); crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0);
} }
return crc; return crc;
} }
VI - Sample Code for Creating Firmware Files VI - Sample Code for Creating Firmware Files
============================================ ============================================

29
Documentation/powerpc/syscall64-abi.txt → Documentation/powerpc/syscall64-abi.rst
View File

@ -5,12 +5,12 @@ Power Architecture 64-bit Linux system call ABI
syscall syscall
======= =======
syscall calling sequence[*] matches the Power Architecture 64-bit ELF ABI syscall calling sequence\ [1]_ matches the Power Architecture 64-bit ELF ABI
specification C function calling sequence, including register preservation specification C function calling sequence, including register preservation
rules, with the following differences. rules, with the following differences.
[*] Some syscalls (typically low-level management functions) may have .. [1] Some syscalls (typically low-level management functions) may have
different calling sequences (e.g., rt_sigreturn). different calling sequences (e.g., rt_sigreturn).
Parameters and return value Parameters and return value
--------------------------- ---------------------------
@ -33,12 +33,14 @@ Register preservation rules
Register preservation rules match the ELF ABI calling sequence with the Register preservation rules match the ELF ABI calling sequence with the
following differences: following differences:
r0: Volatile. (System call number.) =========== ============= ========================================
r3: Volatile. (Parameter 1, and return value.) r0 Volatile (System call number.)
r4-r8: Volatile. (Parameters 2-6.) r3 Volatile (Parameter 1, and return value.)
cr0: Volatile (cr0.SO is the return error condition) r4-r8 Volatile (Parameters 2-6.)
cr1, cr5-7: Nonvolatile. cr0 Volatile (cr0.SO is the return error condition)
lr: Nonvolatile. cr1, cr5-7 Nonvolatile
lr Nonvolatile
=========== ============= ========================================
All floating point and vector data registers as well as control and status All floating point and vector data registers as well as control and status
registers are nonvolatile. registers are nonvolatile.
@ -90,9 +92,12 @@ The vsyscall may or may not use the caller's stack frame save areas.
Register preservation rules Register preservation rules
--------------------------- ---------------------------
r0: Volatile.
cr1, cr5-7: Volatile. =========== ========
lr: Volatile. r0 Volatile
cr1, cr5-7 Volatile
lr Volatile
=========== ========
Invocation Invocation
---------- ----------

45
Documentation/powerpc/transactional_memory.txt → Documentation/powerpc/transactional_memory.rst
View File

@ -1,3 +1,4 @@
============================
Transactional Memory support Transactional Memory support
============================ ============================
@ -17,29 +18,29 @@ instructions are presented to delimit transactions; transactions are
guaranteed to either complete atomically or roll back and undo any partial guaranteed to either complete atomically or roll back and undo any partial
changes. changes.
A simple transaction looks like this: A simple transaction looks like this::
begin_move_money: begin_move_money:
tbegin tbegin
beq abort_handler beq abort_handler
ld r4, SAVINGS_ACCT(r3) ld r4, SAVINGS_ACCT(r3)
ld r5, CURRENT_ACCT(r3) ld r5, CURRENT_ACCT(r3)
subi r5, r5, 1 subi r5, r5, 1
addi r4, r4, 1 addi r4, r4, 1
std r4, SAVINGS_ACCT(r3) std r4, SAVINGS_ACCT(r3)
std r5, CURRENT_ACCT(r3) std r5, CURRENT_ACCT(r3)
tend tend
b continue b continue
abort_handler: abort_handler:
... test for odd failures ... ... test for odd failures ...
/* Retry the transaction if it failed because it conflicted with /* Retry the transaction if it failed because it conflicted with
* someone else: */ * someone else: */
b begin_move_money b begin_move_money
The 'tbegin' instruction denotes the start point, and 'tend' the end point. The 'tbegin' instruction denotes the start point, and 'tend' the end point.
@ -123,7 +124,7 @@ Transaction-aware signal handlers can read the transactional register state
from the second ucontext. This will be necessary for crash handlers to from the second ucontext. This will be necessary for crash handlers to
determine, for example, the address of the instruction causing the SIGSEGV. determine, for example, the address of the instruction causing the SIGSEGV.
Example signal handler: Example signal handler::
void crash_handler(int sig, siginfo_t *si, void *uc) void crash_handler(int sig, siginfo_t *si, void *uc)
{ {
@ -133,9 +134,9 @@ Example signal handler:
if (ucp_link) { if (ucp_link) {
u64 msr = ucp->uc_mcontext.regs->msr; u64 msr = ucp->uc_mcontext.regs->msr;
/* May have transactional ucontext! */ /* May have transactional ucontext! */
#ifndef __powerpc64__ #ifndef __powerpc64__
msr |= ((u64)transactional_ucp->uc_mcontext.regs->msr) << 32; msr |= ((u64)transactional_ucp->uc_mcontext.regs->msr) << 32;
#endif #endif
if (MSR_TM_ACTIVE(msr)) { if (MSR_TM_ACTIVE(msr)) {
/* Yes, we crashed during a transaction. Oops. */ /* Yes, we crashed during a transaction. Oops. */
fprintf(stderr, "Transaction to be restarted at 0x%llx, but " fprintf(stderr, "Transaction to be restarted at 0x%llx, but "
@ -176,6 +177,7 @@ Failure cause codes used by kernel
These are defined in <asm/reg.h>, and distinguish different reasons why the These are defined in <asm/reg.h>, and distinguish different reasons why the
kernel aborted a transaction: kernel aborted a transaction:
====================== ================================
TM_CAUSE_RESCHED Thread was rescheduled. TM_CAUSE_RESCHED Thread was rescheduled.
TM_CAUSE_TLBI Software TLB invalid. TM_CAUSE_TLBI Software TLB invalid.
TM_CAUSE_FAC_UNAV FP/VEC/VSX unavailable trap. TM_CAUSE_FAC_UNAV FP/VEC/VSX unavailable trap.
@ -184,6 +186,7 @@ kernel aborted a transaction:
TM_CAUSE_MISC Currently unused. TM_CAUSE_MISC Currently unused.
TM_CAUSE_ALIGNMENT Alignment fault. TM_CAUSE_ALIGNMENT Alignment fault.
TM_CAUSE_EMULATE Emulation that touched memory. TM_CAUSE_EMULATE Emulation that touched memory.
====================== ================================
These can be checked by the user program's abort handler as TEXASR[0:7]. If These can be checked by the user program's abort handler as TEXASR[0:7]. If
bit 7 is set, it indicates that the error is consider persistent. For example bit 7 is set, it indicates that the error is consider persistent. For example
@ -203,7 +206,7 @@ POWER9
====== ======
TM on POWER9 has issues with storing the complete register state. This TM on POWER9 has issues with storing the complete register state. This
is described in this commit: is described in this commit::
commit 4bb3c7a0208fc13ca70598efd109901a7cd45ae7 commit 4bb3c7a0208fc13ca70598efd109901a7cd45ae7
Author: Paul Mackerras <paulus@ozlabs.org> Author: Paul Mackerras <paulus@ozlabs.org>

10
Documentation/process/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = 'Linux Kernel Development Documentation'
tags.add("subproject")
latex_documents = [
('index', 'process.tex', 'Linux Kernel Development Documentation',
'The kernel development community', 'manual'),
]

10
Documentation/sh/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "SuperH architecture implementation manual"
tags.add("subproject")
latex_documents = [
('index', 'sh.tex', project,
'The kernel development community', 'manual'),
]

10
Documentation/sound/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Linux Sound Subsystem Documentation"
tags.add("subproject")
latex_documents = [
('index', 'sound.tex', project,
'The kernel development community', 'manual'),
]

27
Documentation/sphinx/load_config.py
View File

@ -21,6 +21,29 @@ def loadConfig(namespace):
and os.path.normpath(namespace["__file__"]) != os.path.normpath(config_file) ): and os.path.normpath(namespace["__file__"]) != os.path.normpath(config_file) ):
config_file = os.path.abspath(config_file) config_file = os.path.abspath(config_file)
# Let's avoid one conf.py file just due to latex_documents
start = config_file.find('Documentation/')
if start >= 0:
start = config_file.find('/', start + 1)
end = config_file.rfind('/')
if start >= 0 and end > 0:
dir = config_file[start + 1:end]
print("source directory: %s" % dir)
new_latex_docs = []
latex_documents = namespace['latex_documents']
for l in latex_documents:
if l[0].find(dir + '/') == 0:
has = True
fn = l[0][len(dir) + 1:]
new_latex_docs.append((fn, l[1], l[2], l[3], l[4]))
break
namespace['latex_documents'] = new_latex_docs
# If there is an extra conf.py file, load it
if os.path.isfile(config_file): if os.path.isfile(config_file):
sys.stdout.write("load additional sphinx-config: %s\n" % config_file) sys.stdout.write("load additional sphinx-config: %s\n" % config_file)
config = namespace.copy() config = namespace.copy()
@ -29,4 +52,6 @@ def loadConfig(namespace):
del config['__file__'] del config['__file__']
namespace.update(config) namespace.update(config)
else: else:
sys.stderr.write("WARNING: additional sphinx-config not found: %s\n" % config_file) config = namespace.copy()
config['tags'].add("subproject")
namespace.update(config)

2
Documentation/translations/ko_KR/memory-barriers.txt
View File

@ -569,7 +569,7 @@ ACQUIRE 는 해당 오퍼레이션의 로드 부분에만 적용되고 RELEASE
[*] 버스 마스터링 DMA 와 일관성에 대해서는 다음을 참고하시기 바랍니다: [*] 버스 마스터링 DMA 와 일관성에 대해서는 다음을 참고하시기 바랍니다:
Documentation/PCI/pci.rst Documentation/driver-api/pci/pci.rst
Documentation/DMA-API-HOWTO.txt Documentation/DMA-API-HOWTO.txt
Documentation/DMA-API.txt Documentation/DMA-API.txt

10
Documentation/userspace-api/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "The Linux kernel user-space API guide"
tags.add("subproject")
latex_documents = [
('index', 'userspace-api.tex', project,
'The kernel development community', 'manual'),
]

1
Documentation/virtual/kvm/index.rst
View File

@ -9,3 +9,4 @@ KVM
amd-memory-encryption amd-memory-encryption
cpuid cpuid
vcpu-requests

10
Documentation/vm/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "Linux Memory Management Documentation"
tags.add("subproject")
latex_documents = [
('index', 'memory-management.tex', project,
'The kernel development community', 'manual'),
]

2
Documentation/watchdog/hpwdt.rst
View File

@ -63,7 +63,7 @@ Last reviewed: 08/20/2018
and loop forever. This is generally not what a watchdog user wants. and loop forever. This is generally not what a watchdog user wants.
For those wishing to learn more please see: For those wishing to learn more please see:
Documentation/kdump/kdump.rst Documentation/admin-guide/kdump/kdump.rst
Documentation/admin-guide/kernel-parameters.txt (panic=) Documentation/admin-guide/kernel-parameters.txt (panic=)
Your Linux Distribution specific documentation. Your Linux Distribution specific documentation.

10
Documentation/x86/conf.py
View File

@ -1,10 +0,0 @@
# -*- coding: utf-8; mode: python -*-
project = "X86 architecture specific documentation"
tags.add("subproject")
latex_documents = [
('index', 'x86.tex', project,
'The kernel development community', 'manual'),
]

14
MAINTAINERS
View File

@ -899,7 +899,7 @@ L: linux-iio@vger.kernel.org
W: http://ez.analog.com/community/linux-device-drivers W: http://ez.analog.com/community/linux-device-drivers
S: Supported S: Supported
F: drivers/iio/adc/ad7124.c F: drivers/iio/adc/ad7124.c
F: Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt F: Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml
ANALOG DEVICES INC AD7606 DRIVER ANALOG DEVICES INC AD7606 DRIVER
M: Stefan Popa <stefan.popa@analog.com> M: Stefan Popa <stefan.popa@analog.com>
@ -4190,7 +4190,7 @@ M: Jens Axboe <axboe@kernel.dk>
L: cgroups@vger.kernel.org L: cgroups@vger.kernel.org
L: linux-block@vger.kernel.org L: linux-block@vger.kernel.org
T: git git://git.kernel.dk/linux-block T: git git://git.kernel.dk/linux-block
F: Documentation/cgroup-v1/blkio-controller.rst F: Documentation/admin-guide/cgroup-v1/blkio-controller.rst
F: block/blk-cgroup.c F: block/blk-cgroup.c
F: include/linux/blk-cgroup.h F: include/linux/blk-cgroup.h
F: block/blk-throttle.c F: block/blk-throttle.c
@ -4469,7 +4469,7 @@ F: arch/powerpc/platforms/powernv/pci-cxl.c
F: drivers/misc/cxl/ F: drivers/misc/cxl/
F: include/misc/cxl* F: include/misc/cxl*
F: include/uapi/misc/cxl.h F: include/uapi/misc/cxl.h
F: Documentation/powerpc/cxl.txt F: Documentation/powerpc/cxl.rst
F: Documentation/ABI/testing/sysfs-class-cxl F: Documentation/ABI/testing/sysfs-class-cxl
CXLFLASH (IBM Coherent Accelerator Processor Interface CAPI Flash) SCSI DRIVER CXLFLASH (IBM Coherent Accelerator Processor Interface CAPI Flash) SCSI DRIVER
@ -4480,7 +4480,7 @@ L: linux-scsi@vger.kernel.org
S: Supported S: Supported
F: drivers/scsi/cxlflash/ F: drivers/scsi/cxlflash/
F: include/uapi/scsi/cxlflash_ioctl.h F: include/uapi/scsi/cxlflash_ioctl.h
F: Documentation/powerpc/cxlflash.txt F: Documentation/powerpc/cxlflash.rst
CYBERPRO FB DRIVER CYBERPRO FB DRIVER
M: Russell King <linux@armlinux.org.uk> M: Russell King <linux@armlinux.org.uk>
@ -6856,7 +6856,7 @@ R: Sagi Shahar <sagis@google.com>
R: Jon Olson <jonolson@google.com> R: Jon Olson <jonolson@google.com>
L: netdev@vger.kernel.org L: netdev@vger.kernel.org
S: Supported S: Supported
F: Documentation/networking/device_drivers/google/gve.txt F: Documentation/networking/device_drivers/google/gve.rst
F: drivers/net/ethernet/google F: drivers/net/ethernet/google
GPD POCKET FAN DRIVER GPD POCKET FAN DRIVER
@ -12137,7 +12137,7 @@ M: Thomas Hellstrom <thellstrom@vmware.com>
M: "VMware, Inc." <pv-drivers@vmware.com> M: "VMware, Inc." <pv-drivers@vmware.com>
L: virtualization@lists.linux-foundation.org L: virtualization@lists.linux-foundation.org
S: Supported S: Supported
F: Documentation/virtual/paravirt_ops.txt F: Documentation/virtual/paravirt_ops.rst
F: arch/*/kernel/paravirt* F: arch/*/kernel/paravirt*
F: arch/*/include/asm/paravirt*.h F: arch/*/include/asm/paravirt*.h
F: include/linux/hypervisor.h F: include/linux/hypervisor.h
@ -12394,7 +12394,7 @@ F: Documentation/PCI/pci-error-recovery.rst
F: drivers/pci/pcie/aer.c F: drivers/pci/pcie/aer.c
F: drivers/pci/pcie/dpc.c F: drivers/pci/pcie/dpc.c
F: drivers/pci/pcie/err.c F: drivers/pci/pcie/err.c
F: Documentation/powerpc/eeh-pci-error-recovery.txt F: Documentation/powerpc/eeh-pci-error-recovery.rst
F: arch/powerpc/kernel/eeh*.c F: arch/powerpc/kernel/eeh*.c
F: arch/powerpc/platforms/*/eeh*.c F: arch/powerpc/platforms/*/eeh*.c
F: arch/powerpc/include/*/eeh*.h F: arch/powerpc/include/*/eeh*.h

2
arch/powerpc/kernel/exceptions-64s.S
View File

@ -1531,7 +1531,7 @@ EXC_COMMON(trap_0b_common, 0xb00, unknown_exception)
* *
* Call convention: * Call convention:
* *
* syscall register convention is in Documentation/powerpc/syscall64-abi.txt * syscall register convention is in Documentation/powerpc/syscall64-abi.rst
* *
* For hypercalls, the register convention is as follows: * For hypercalls, the register convention is as follows:
* r0 volatile * r0 volatile

2
drivers/gpu/drm/drm_modes.c
View File

@ -1686,7 +1686,7 @@ static int drm_mode_parse_cmdline_options(char *str, size_t len,
* *
* Additionals options can be provided following the mode, using a comma to * Additionals options can be provided following the mode, using a comma to
* separate each option. Valid options can be found in * separate each option. Valid options can be found in
* Documentation/fb/modedb.txt. * Documentation/fb/modedb.rst.
* *
* The intermediate drm_cmdline_mode structure is required to store additional * The intermediate drm_cmdline_mode structure is required to store additional
* options from the command line modline like the force-enable/disable flag. * options from the command line modline like the force-enable/disable flag.

2
drivers/i2c/busses/i2c-nvidia-gpu.c
View File

@ -364,7 +364,7 @@ static void gpu_i2c_remove(struct pci_dev *pdev)
/* /*
* We need gpu_i2c_suspend() even if it is stub, for runtime pm to work * We need gpu_i2c_suspend() even if it is stub, for runtime pm to work
* correctly. Without it, lspci shows runtime pm status as "D0" for the card. * correctly. Without it, lspci shows runtime pm status as "D0" for the card.
* Documentation/power/pci.txt also insists for driver to provide this. * Documentation/power/pci.rst also insists for driver to provide this.
*/ */
static __maybe_unused int gpu_i2c_suspend(struct device *dev) static __maybe_unused int gpu_i2c_suspend(struct device *dev)
{ {

4
drivers/scsi/hpsa.c
View File

@ -7798,7 +7798,7 @@ static void hpsa_free_pci_init(struct ctlr_info *h)
hpsa_disable_interrupt_mode(h); /* pci_init 2 */ hpsa_disable_interrupt_mode(h); /* pci_init 2 */
/* /*
* call pci_disable_device before pci_release_regions per * call pci_disable_device before pci_release_regions per
* Documentation/PCI/pci.rst * Documentation/driver-api/pci/pci.rst
*/ */
pci_disable_device(h->pdev); /* pci_init 1 */ pci_disable_device(h->pdev); /* pci_init 1 */
pci_release_regions(h->pdev); /* pci_init 2 */ pci_release_regions(h->pdev); /* pci_init 2 */
@ -7881,7 +7881,7 @@ static int hpsa_pci_init(struct ctlr_info *h)
clean1: clean1:
/* /*
* call pci_disable_device before pci_release_regions per * call pci_disable_device before pci_release_regions per
* Documentation/PCI/pci.rst * Documentation/driver-api/pci/pci.rst
*/ */
pci_disable_device(h->pdev); pci_disable_device(h->pdev);
pci_release_regions(h->pdev); pci_release_regions(h->pdev);

2
drivers/soc/fsl/qe/qe.c
View File

@ -419,7 +419,7 @@ static void qe_upload_microcode(const void *base,
/* /*
* Upload a microcode to the I-RAM at a specific address. * Upload a microcode to the I-RAM at a specific address.
* *
* See Documentation/powerpc/qe_firmware.txt for information on QE microcode * See Documentation/powerpc/qe_firmware.rst for information on QE microcode
* uploading. * uploading.
* *
* Currently, only version 1 is supported, so the 'version' field must be * Currently, only version 1 is supported, so the 'version' field must be

2
drivers/tty/hvc/hvcs.c
View File

@ -47,7 +47,7 @@
* using the 2.6 Linux kernel kref construct. * using the 2.6 Linux kernel kref construct.
* *
* For direction on installation and usage of this driver please reference * For direction on installation and usage of this driver please reference
* Documentation/powerpc/hvcs.txt. * Documentation/powerpc/hvcs.rst.
*/ */
#include <linux/device.h> #include <linux/device.h>

2
include/soc/fsl/qe/qe.h
View File

@ -259,7 +259,7 @@ static inline int qe_alive_during_sleep(void)
/* Structure that defines QE firmware binary files. /* Structure that defines QE firmware binary files.
* *
* See Documentation/powerpc/qe_firmware.txt for a description of these * See Documentation/powerpc/qe_firmware.rst for a description of these
* fields. * fields.
*/ */
struct qe_firmware { struct qe_firmware {

118
scripts/sphinx-pre-install
View File

@ -83,6 +83,17 @@ sub check_missing(%)
foreach my $prog (sort keys %missing) { foreach my $prog (sort keys %missing) {
my $is_optional = $missing{$prog}; my $is_optional = $missing{$prog};
# At least on some LTS distros like CentOS 7, texlive doesn't
# provide all packages we need. When such distros are
# detected, we have to disable PDF output.
#
# So, we need to ignore the packages that distros would
# need for LaTeX to work
if ($is_optional == 2 && !$pdf) {
$optional--;
next;
}
if ($is_optional) { if ($is_optional) {
print "Warning: better to also install \"$prog\".\n"; print "Warning: better to also install \"$prog\".\n";
} else { } else {
@ -333,10 +344,13 @@ sub give_debian_hints()
if ($pdf) { if ($pdf) {
check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
"fonts-dejavu", 1); "fonts-dejavu", 2);
check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
"fonts-noto-cjk", 2);
} }
check_program("dvipng", 1) if ($pdf); check_program("dvipng", 2) if ($pdf);
check_missing(\%map); check_missing(\%map);
return if (!$need && !$optional); return if (!$need && !$optional);
@ -363,6 +377,7 @@ sub give_redhat_hints()
my @fedora_tex_pkgs = ( my @fedora_tex_pkgs = (
"texlive-collection-fontsrecommended", "texlive-collection-fontsrecommended",
"texlive-collection-latex", "texlive-collection-latex",
"texlive-xecjk",
"dejavu-sans-fonts", "dejavu-sans-fonts",
"dejavu-serif-fonts", "dejavu-serif-fonts",
"dejavu-sans-mono-fonts", "dejavu-sans-mono-fonts",
@ -371,22 +386,45 @@ sub give_redhat_hints()
# #
# Checks valid for RHEL/CentOS version 7.x. # Checks valid for RHEL/CentOS version 7.x.
# #
if (! $system_release =~ /Fedora/) { my $old = 0;
my $rel;
$rel = $1 if ($system_release =~ /release\s+(\d+)/);
if (!($system_release =~ /Fedora/)) {
$map{"virtualenv"} = "python-virtualenv"; $map{"virtualenv"} = "python-virtualenv";
if ($rel && $rel < 8) {
$old = 1;
$pdf = 0;
printf("Note: texlive packages on RHEL/CENTOS <= 7 are incomplete. Can't support PDF output\n");
printf("If you want to build PDF, please read:\n");
printf("\thttps://www.systutorials.com/241660/how-to-install-tex-live-on-centos-7-linux/\n");
}
} else {
if ($rel && $rel < 26) {
$old = 1;
}
}
if (!$rel) {
printf("Couldn't identify release number\n");
$old = 1;
$pdf = 0;
} }
my $release; if ($pdf) {
check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
"google-noto-sans-cjk-ttc-fonts", 2);
}
$release = $1 if ($system_release =~ /Fedora\s+release\s+(\d+)/); check_rpm_missing(\@fedora26_opt_pkgs, 2) if ($pdf && !$old);
check_rpm_missing(\@fedora_tex_pkgs, 2) if ($pdf);
check_rpm_missing(\@fedora26_opt_pkgs, 1) if ($pdf && $release >= 26); check_missing_tex(2) if ($pdf);
check_rpm_missing(\@fedora_tex_pkgs, 1) if ($pdf);
check_missing_tex(1) if ($pdf);
check_missing(\%map); check_missing(\%map);
return if (!$need && !$optional); return if (!$need && !$optional);
if ($release >= 18) { if (!$old) {
# dnf, for Fedora 18+ # dnf, for Fedora 18+
printf("You should run:\n\n\tsudo dnf install -y $install\n"); printf("You should run:\n\n\tsudo dnf install -y $install\n");
} else { } else {
@ -425,8 +463,15 @@ sub give_opensuse_hints()
"texlive-zapfding", "texlive-zapfding",
); );
check_rpm_missing(\@suse_tex_pkgs, 1) if ($pdf); $map{"latexmk"} = "texlive-latexmk-bin";
check_missing_tex(1) if ($pdf);
# FIXME: add support for installing CJK fonts
#
# I tried hard, but was unable to find a way to install
# "Noto Sans CJK SC" on openSUSE
check_rpm_missing(\@suse_tex_pkgs, 2) if ($pdf);
check_missing_tex(2) if ($pdf);
check_missing(\%map); check_missing(\%map);
return if (!$need && !$optional); return if (!$need && !$optional);
@ -450,7 +495,14 @@ sub give_mageia_hints()
"texlive-fontsextra", "texlive-fontsextra",
); );
check_rpm_missing(\@tex_pkgs, 1) if ($pdf); $map{"latexmk"} = "texlive-collection-basic";
if ($pdf) {
check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
"google-noto-sans-cjk-ttc-fonts", 2);
}
check_rpm_missing(\@tex_pkgs, 2) if ($pdf);
check_missing(\%map); check_missing(\%map);
return if (!$need && !$optional); return if (!$need && !$optional);
@ -473,7 +525,13 @@ sub give_arch_linux_hints()
"texlive-latexextra", "texlive-latexextra",
"ttf-dejavu", "ttf-dejavu",
); );
check_pacman_missing(\@archlinux_tex_pkgs, 1) if ($pdf); check_pacman_missing(\@archlinux_tex_pkgs, 2) if ($pdf);
if ($pdf) {
check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
"noto-fonts-cjk", 2);
}
check_missing(\%map); check_missing(\%map);
return if (!$need && !$optional); return if (!$need && !$optional);
@ -492,15 +550,31 @@ sub give_gentoo_hints()
); );
check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf", check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf",
"media-fonts/dejavu", 1) if ($pdf); "media-fonts/dejavu", 2) if ($pdf);
if ($pdf) {
check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf",
"media-fonts/noto-cjk", 2);
}
check_missing(\%map); check_missing(\%map);
return if (!$need && !$optional); return if (!$need && !$optional);
printf("You should run:\n\n"); printf("You should run:\n\n");
printf("\tsudo su -c 'echo \"media-gfx/imagemagick svg png\" > /etc/portage/package.use/imagemagick'\n");
printf("\tsudo su -c 'echo \"media-gfx/graphviz cairo pdf\" > /etc/portage/package.use/graphviz'\n"); my $imagemagick = "media-gfx/imagemagick svg png";
my $cairo = "media-gfx/graphviz cairo pdf";
my $portage_imagemagick = "/etc/portage/package.use/imagemagick";
my $portage_cairo = "/etc/portage/package.use/graphviz";
if (qx(cat $portage_imagemagick) ne "$imagemagick\n") {
printf("\tsudo su -c 'echo \"$imagemagick\" > $portage_imagemagick'\n")
}
if (qx(cat $portage_cairo) ne "$cairo\n") {
printf("\tsudo su -c 'echo \"$cairo\" > $portage_cairo'\n");
}
printf("\tsudo emerge --ask $install\n"); printf("\tsudo emerge --ask $install\n");
} }
@ -560,7 +634,7 @@ sub check_distros()
my %map = ( my %map = (
"sphinx-build" => "sphinx" "sphinx-build" => "sphinx"
); );
check_missing_tex(1) if ($pdf); check_missing_tex(2) if ($pdf);
check_missing(\%map); check_missing(\%map);
print "I don't know distro $system_release.\n"; print "I don't know distro $system_release.\n";
print "So, I can't provide you a hint with the install procedure.\n"; print "So, I can't provide you a hint with the install procedure.\n";
@ -589,11 +663,13 @@ sub check_needs()
check_program("make", 0); check_program("make", 0);
check_program("gcc", 0); check_program("gcc", 0);
check_python_module("sphinx_rtd_theme", 1) if (!$virtualenv); check_python_module("sphinx_rtd_theme", 1) if (!$virtualenv);
check_program("xelatex", 1) if ($pdf);
check_program("dot", 1); check_program("dot", 1);
check_program("convert", 1); check_program("convert", 1);
check_program("rsvg-convert", 1) if ($pdf);
check_program("latexmk", 1) if ($pdf); # Extra PDF files - should use 2 for is_optional
check_program("xelatex", 2) if ($pdf);
check_program("rsvg-convert", 2) if ($pdf);
check_program("latexmk", 2) if ($pdf);
check_distros(); check_distros();