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  1. This. is useful on platforms that store the MAC address in a custom location. Board code can call this in the late init stage to make sure that the. interface device tree node has the right MAC address configured for the. Ethernet uclass to pick it up. Typically the FDT passed into this function will be U-Boot's control DTB.
  2. Please enjoy our wide selection of space-based games. This category of free online games features only the best video games with the final frontier itself as the theme. Race through the galaxy with one of our celestial racing games, or take over the galaxy with a strategy game. There is no horizon and there is no limit to kinds of IO-games you'll find hiding here among the.

The fourteenth significant arrival of macOS and Apple Inc's is the macOS High Sierra which has a variant 10.13. The framework was working for Macintosh PCs by the work area. macOS Sierra was declared at a mega event named WWDC which was scheduled on June 5, 2017. On 25, 2017 the preceding being discharged, and on September 24, 2018, its successor macOS Mojave was discharged.

The name 'High Sierra' officially comes from the area of high Sierra which is located in California. Other software versions of macOS like Snow Leopard, El Capitan, and Mountain Lion are also from California. These names are additionally equivalent to its status as a revision of its introduction. The software is completely focused on bringing up enhancements through introducing updates instead of focusing on only the client spotlight. Photos and safari are remarkable changes among all the applications.

Space Is Key at Cool Math Games: Space is key if you want to beat this really hard timing game! Press space to help your block jump through the difficult obstacle course! Moby Project - a collaborative project for the container ecosystem to assemble container-based systems - edgespace-io/moby.

Tutorials: How to Clean Install Mac OS using a USB drive on Mac

License
Official Installer

File Size
5.0GB / 4.85GB

Language
English

Developer
Apple Inc.


Download: Mac OS Sierra 10.12 ISO and DMG Image

Mac OS High Sierra 10.13 ISO or DMG

Download only the stub installer means web installer is the main reason that only users may be downloading from the app store. The stub installer is mainly little in size. After running the stub installer, the real operating system will begin being introduced.

This article is focused more on the process part of downloading macOS High Sierra 10 on ISO River platform. With the article, the users can easily understand the bootable USB process to install macOS High Sierra 10.13 full installer. Moreover, this is encouraging a new introduction and an updated side of the macOS software.

Apple security updates: it does not untapped, examine affirm security issues until an examination has stopped only for the client insurance where fixes or discharges are accessible. Apple security discharge page can record the discharge pieces of evidence. Its users may know the more data they must have to see the Apple product's security page. Users can interchange with Apple utilizing the Apple product security PGP key.

About Macintosh OS Server 1.0

Macintosh OS Server 1.0- 1.2v3 based on Rhapsody which is half and half of OPENSTEP from NeXT Computer and Mac OS 8.5.1. The GUI looks like the blend of MAC OS 8's Platinum appearance with OPENSTEP's NeXT based interface. This Blue box is for running inheritance MAC OS based applications which have a different window. There was a discussion of the ‘straightforward blue box'. MAC OS X Server 1.0- 1.2v3 are Incorporated with the following:

  • Apple File Service.
  • Macintosh Manager.
  • Quick Time Streaming Server.
  • Web objects.
  • NeetBoot.

To use these servers it cannot be used up the FireWire gadgets. To copy a quote or image for video copy is very easy from one device to another device operating system. Users must be copied and pasted between the devices with a universal clipboard. Users must access their file on the Mac from the iPhone with iCloud Desktop and documents. Users must save all the files on the desktop or share them on iCloud. Users may keep the same file on their desktop also and documents folder on another Mac. Users may easily optimize their Mac by optimizing, storing, and freeing up space.

Users may rediscover the meaning of full moments of the photos in their gallery. They also enjoy memorable moments. Users may display their images using face recognition technology for the same group photo slideshow together. Users may search their photo with the keyboard like a beach dog or concert. For this user may thank for the smart search. Users may enjoy the convenience and security of the Apple pay when the user may focus on the Apple store and they may use Apple pay easily.

Productive Features of macOS High Sierra 10.13

These are some of the new features and enhancements that can be seen in macOS High Sierra 10.13:

High-Efficiency Video Coding(HEVC)

Since the introduction of iOS 11, iPads and iPhones have started saving their pictures in the HEVC mode. The same model has now been added to macOS High Sierra. Thus, users can now send their photos in HEVC mode to their Mac without converting them. HEVC also does a great job of maintaining excellent picture quality.

Apple File System(APFS)

The new file system, APFS, is a fine improvement over the Hierarchical File System(HFS) Plus that was used before. By the new cloning mechanism that is available under APFS, macOS can now make copies of files on the same volume without utilizing any extra space. Snapshots can also be made now. An excellent security feature in the form of full-disk encryption has been introduced with a variety of options including single key-encryption and multi-key encryption.

The capacity for storing files has increased greatly. Checksums are used to ensure the integrity of the files' metadata. Copying large files has been made much easier under APFS.

Space.io Mac OS
  1. This. is useful on platforms that store the MAC address in a custom location. Board code can call this in the late init stage to make sure that the. interface device tree node has the right MAC address configured for the. Ethernet uclass to pick it up. Typically the FDT passed into this function will be U-Boot's control DTB.
  2. Please enjoy our wide selection of space-based games. This category of free online games features only the best video games with the final frontier itself as the theme. Race through the galaxy with one of our celestial racing games, or take over the galaxy with a strategy game. There is no horizon and there is no limit to kinds of IO-games you'll find hiding here among the.

The fourteenth significant arrival of macOS and Apple Inc's is the macOS High Sierra which has a variant 10.13. The framework was working for Macintosh PCs by the work area. macOS Sierra was declared at a mega event named WWDC which was scheduled on June 5, 2017. On 25, 2017 the preceding being discharged, and on September 24, 2018, its successor macOS Mojave was discharged.

The name 'High Sierra' officially comes from the area of high Sierra which is located in California. Other software versions of macOS like Snow Leopard, El Capitan, and Mountain Lion are also from California. These names are additionally equivalent to its status as a revision of its introduction. The software is completely focused on bringing up enhancements through introducing updates instead of focusing on only the client spotlight. Photos and safari are remarkable changes among all the applications.

Space Is Key at Cool Math Games: Space is key if you want to beat this really hard timing game! Press space to help your block jump through the difficult obstacle course! Moby Project - a collaborative project for the container ecosystem to assemble container-based systems - edgespace-io/moby.

Tutorials: How to Clean Install Mac OS using a USB drive on Mac

License
Official Installer

File Size
5.0GB / 4.85GB

Language
English

Developer
Apple Inc.


Download: Mac OS Sierra 10.12 ISO and DMG Image

Mac OS High Sierra 10.13 ISO or DMG

Download only the stub installer means web installer is the main reason that only users may be downloading from the app store. The stub installer is mainly little in size. After running the stub installer, the real operating system will begin being introduced.

This article is focused more on the process part of downloading macOS High Sierra 10 on ISO River platform. With the article, the users can easily understand the bootable USB process to install macOS High Sierra 10.13 full installer. Moreover, this is encouraging a new introduction and an updated side of the macOS software.

Apple security updates: it does not untapped, examine affirm security issues until an examination has stopped only for the client insurance where fixes or discharges are accessible. Apple security discharge page can record the discharge pieces of evidence. Its users may know the more data they must have to see the Apple product's security page. Users can interchange with Apple utilizing the Apple product security PGP key.

About Macintosh OS Server 1.0

Macintosh OS Server 1.0- 1.2v3 based on Rhapsody which is half and half of OPENSTEP from NeXT Computer and Mac OS 8.5.1. The GUI looks like the blend of MAC OS 8's Platinum appearance with OPENSTEP's NeXT based interface. This Blue box is for running inheritance MAC OS based applications which have a different window. There was a discussion of the ‘straightforward blue box'. MAC OS X Server 1.0- 1.2v3 are Incorporated with the following:

  • Apple File Service.
  • Macintosh Manager.
  • Quick Time Streaming Server.
  • Web objects.
  • NeetBoot.

To use these servers it cannot be used up the FireWire gadgets. To copy a quote or image for video copy is very easy from one device to another device operating system. Users must be copied and pasted between the devices with a universal clipboard. Users must access their file on the Mac from the iPhone with iCloud Desktop and documents. Users must save all the files on the desktop or share them on iCloud. Users may keep the same file on their desktop also and documents folder on another Mac. Users may easily optimize their Mac by optimizing, storing, and freeing up space.

Users may rediscover the meaning of full moments of the photos in their gallery. They also enjoy memorable moments. Users may display their images using face recognition technology for the same group photo slideshow together. Users may search their photo with the keyboard like a beach dog or concert. For this user may thank for the smart search. Users may enjoy the convenience and security of the Apple pay when the user may focus on the Apple store and they may use Apple pay easily.

Productive Features of macOS High Sierra 10.13

These are some of the new features and enhancements that can be seen in macOS High Sierra 10.13:

High-Efficiency Video Coding(HEVC)

Since the introduction of iOS 11, iPads and iPhones have started saving their pictures in the HEVC mode. The same model has now been added to macOS High Sierra. Thus, users can now send their photos in HEVC mode to their Mac without converting them. HEVC also does a great job of maintaining excellent picture quality.

Apple File System(APFS)

The new file system, APFS, is a fine improvement over the Hierarchical File System(HFS) Plus that was used before. By the new cloning mechanism that is available under APFS, macOS can now make copies of files on the same volume without utilizing any extra space. Snapshots can also be made now. An excellent security feature in the form of full-disk encryption has been introduced with a variety of options including single key-encryption and multi-key encryption.

The capacity for storing files has increased greatly. Checksums are used to ensure the integrity of the files' metadata. Copying large files has been made much easier under APFS.

General features of the macOS Sierra

  • Siri system must be added to macOS.
  • Unlocking must be watched by auto unlocking Apple.
  • Apple pays the web must be paid by Apple pay.
  • iCloud improvement must be used by the New Storage Optimization.
  • Apple Music app overview
  • F. From one Apple device copy the content including text, image, photos, and videos, and paste the same to another device.
  • Sierra- iCloud space expanded from 20GB to 150 GB, so image to image capabilities and multi Windows capabilities are shown.
  • h.one must have to enjoy the favorite and forgotten favorite picture from the photo gallery.
  • Apple pay must be used for the security payment when shopping in Safari on the user's macOS High Sierra.

Apple security archives the vulnerability by CVE- IR when it is conceivable.

System Requirements of MacOS High Sierra 10.13 ISO/DMG File

To get macOS High Sierra 10.13 ISO in your operating system the user needs to have the below requirements which are needed to install the software.

macOS High Sierra 10.13 ISO must be run on this PC.

  • MacBook: It must be late 2008 or fresher.
  • MacBook Air: It must be also late 2008 or freshers
  • MacBook Pro: It must be mid-2007 or freshers
  • Macintosh Mini: It must be of 2009 or freshers
  • iMac: It should be 2007 or freshers.
  • Macintosh Pro: It should be early 2008 or the fresher
  • Xserve: It should be in early 2009.

Pcs are mostly accompanying models which were decorated with the 1 GB RAM. This is the standard choice on the base model when they were delivered at the initial stage. macOS High Sierra 10.13 ISO can run possibly by them. As they possess only 2GB of RAM.

  • iMac: It should be 2007 or freshers.
  • iMac: It should be of early 2008.
  • Macintosh Mini: It should be of Early 2009.

There may be an Airdrop between the Mac PCs and iOS gadget's new manual API.

  • iMac: Which is mainly late 2012 or more up to date.
  • MacBook: It should be of early 2015 or more up to date.
  • MacBook Air: It should be mid-2012 or more up to date.
  • MacBook Pro: It should be mid-2012 or more up to date.
  • Macintosh Mini: It should be of late 2012 or more up to date.
  • Macintosh Pro: Should be of late 2013.

More about macOS High Sierra 10.13 ISO

MacOS 10.13 is renowned as the High Sierra operating system whose main focus on the continuity, iCloud, and operating system experience. The operating system X extension will be removed from Apple. Apple converts it to Mac OS. It is because of the nominal similarity to iOS, tvOS, and watchOS. Siri has been merged with the opening system and users must use it in their Macs. The ability to display image to image is another new feature of Mac OS Sierra. Besides these multi Windows capabilities Which look the same the iPad Pro and Mac computers.

An auto-lock is another character of this operating system with the unlock option. This unlock option is password depending if the user has their Apple Watch in hand. The name Sierra comes from one of the world's largest mountain ranges in Spain. The principle of continuity between the internal components of the operating system and its compatibility with iOS is used in Apple in case of making the new version of macOS. Improving the iCloud system is another good character of the Mac OS High Sierra on Virtualbox.

Apple can support the 10 billion files on the user's iCloud driver. The desktop experience of the iCloud files on the iPhone, iPad, Mac, and Mac book will be of the same type. The new Mac operating system is able to automatically transfer the older files to iCloud so that it is unable to take up any extra space on the user's Macbook or Mac.

The Siri feature is a great feature of this system among many. Siri's system is constructed with the new features specially designed for the desktop only. Their message and music system are more enjoyable and handful. Users may enjoy their favorite features of iOS as well as be optimized for Mac. Sending messages, creating a reminder, searching the Web and many other processes are so easy for handling. Viewing of files, settings, and system information is only possible by the Siri system.

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If the download of user's software fails

The macOS was released to positive reviews on its release. Many of the new small updates and features received a big thumbs up from the public as well as critics. The new file system that was introduced was offered a much more stable and effective OS. Users who enjoy using the Photos feature are in for a treat as there are new editing features that have been added that are incredibly exciting to try out. The introduction of Safari was seen as a big plus by users who loved the attention paid by the new browser to their privacy.

There were many security issues that arose with High Sierra that was a cause of concern. Users who expected this new version to be more focused on gaming and other entertainment features were disappointed as they did not get what they were looking forward to. In spite of these slight setbacks, mac OS High Sierra was an excellent attempt that helped lay the groundwork for the future of Apple's products.

To better explain, the article is provided by macOS High Sierra 10.13.6 download DMG. Besides that the macOS High Sierra comes up with advanced software named macOS High Sierra ISO for VMware & VirtualBox. There is no other reason as macOS High Sierra DMG is most loved and highly recommended by the users.

Reviews from the users

During this period new macOS were also introduced but people didn't stop selecting High Sierra as it was the best software macOS ever had. macOS High Sierra was a tremendous hit even after macOS Catalina was launched during the days. In 2020, macOS High Sierra is available on both Mac computers and Windows computers. Both the segment users can get the benefit of using the same software. After macOS High Sierra macOS Mojave was introduced but it wasn't as popular as High Sierra.

According to folks, macOS High Sierra does have better performance than traditional macOS versions. Apple is consistently showing its creativity and raising its standards by introducing new computers and laptop devices. In every update, they have been impressively consistent enough in showing innovations with new features and functional settings, formats, and more. The users can easily use, download, and install on new Macs and get the benefits of the updates. Through macOS, the users can really learn about other applications' performances and stability.

PCI configuration space is the underlying way that the Conventional PCI, PCI-X and PCI Express perform auto configuration of the cards inserted into their bus.

Overview[edit]

PCI devices have a set of registers referred to as configuration space and PCI Express introduces extended configuration space for devices. Configuration space registers are mapped to memory locations. Device drivers and diagnostic software must have access to the configuration space, and operating systems typically use APIs to allow access to device configuration space. When the operating system does not have access methods defined or APIs for memory mapped configuration space requests, the driver or diagnostic software has the burden to access the configuration space in a manner that is compatible with the operating system's underlying access rules. In all systems, device drivers are encouraged to use APIs provided by the operating system to access the configuration space of the device.

Technical information[edit]

One of the major improvements the PCI Local Bus had over other I/O architectures was its configuration mechanism. In addition to the normal memory-mapped and I/O port spaces, each device function on the bus has a configuration space, which is 256 bytes long, addressable by knowing the eight-bit PCI bus, five-bit device, and three-bit function numbers for the device (commonly referred to as the BDF or B/D/F, as abbreviated from bus/device/function). This allows up to 256 buses, each with up to 32 devices, each supporting eight functions. A single PCI expansion card can respond as a device and must implement at least function number zero. The first 64 bytes of configuration space are standardized; the remainder are available for vendor-defined purposes.

In order to allow more parts of configuration space to be standardized without conflicting with existing uses, there can be a list of capabilities defined within the remain 192 bytes of PCI configuration space. Last train out mac os. Each capability has one byte that describes which capability it is, and one byte to point to the next capability. The number of additional bytes depends on the capability ID. If capabilities are being used, a bit in the Status register is set, and a pointer to the first in a linked list of capabilities is provided in the Cap. pointer register defined in the Standardized Registers.

PCI-X 2.0 and PCI Express introduced an extended configuration space, up to 4096 bytes. The only standardized part of extended configuration space is the first four bytes at 0x100 which are the start of an extended capability list. Extended capabilities are very much like normal capabilities except that they can refer to any byte in the extended configuration space (by using 12 bits instead of eight), have a four-bit version number and a 16-bit capability ID. Extended capability IDs overlap with normal capability IDs, but there is no chance of confusion as they are in separate lists.

Standardized registers[edit]

Standard registers of PCI Type 0 (Non-Bridge) Configuration Space Header

The Device ID (DID) and Vendor ID (VID) registers identify the device (such as an IC), and are commonly called the PCI ID. The 16-bit vendor ID is allocated by the PCI-SIG. The 16-bit device ID is then assigned by the vendor. There is an inactive project to collect all known Vendor and Device IDs. (See the external links below.)

The Status register is used to report which features are supported and whether certain kinds of errors have occurred. The Command register contains a bitmask of features that can be individually enabled and disabled. The Header Type register values determine the different layouts of remaining 48 bytes (64-16) of the header, depending on the function of the device. That is, Type 1 headers for Root Complex, switches, and bridges. Then Type 0 for endpoints. The Cache Line Size register must be programmed before the device is told it can use the memory-write-and-invalidate transaction. This should normally match the CPU's cache line size, but the correct setting is system dependent. This register does not apply to PCI Express.

The Subsystem ID (SSID) and the Subsystem Vendor ID (SVID) differentiate specific model (such as an add-in card). While the Vendor ID is that of the chipset manufacturer, the Subsystem Vendor ID is that of the card manufacturer. The Subsystem ID is assigned by the subsystem vendor from the same number space as the Device ID. As an example, in the case of wireless network cards, the chipset manufacturer might be Broadcom or Atheros, and the card manufacturer might be Netgear or D-Link. Generally, the Vendor ID–Device ID combination designates which driver the host should load in order to handle the device, as all cards with the same VID:DID combination can be handled by the same driver. The Subsystem Vendor ID–Subsystem ID combination identifies the card, which is the kind of information the driver may use to apply a minor card-specific change in its operation.

Bus enumeration[edit]

To address a PCI device, it must be enabled by being mapped into the system's I/O port address space or memory-mapped address space. The system's firmware, device drivers or the operating system program the Base Address Registers (commonly called BARs) to inform the device of its address mapping by writing configuration commands to the PCI controller. Because all PCI devices are in an inactive state upon system reset, they will have no addresses assigned to them by which the operating system or device drivers can communicate with them. Either the BIOS or the operating system geographically addresses the PCI slots (for example, the first PCI slot, the second PCI slot, or the third PCI slot, etc., on the motherboard) through the PCI controller using the per slot IDSEL (Initialization Device Select) signals.

PCI BAR Bits
BitsDescriptionValues
For all PCI BARs
0Region Type0 = Memory
1 = I/O
For Memory BARs
2-1Locatable0 = any 32-bit
1 = < 1 MiB
2 = any 64-bit
3Prefetchable0 = no
1 = yes
31-4Base Addressnaturally 16-byte aligned
For I/O BARs
1Reserved
31-2Base Addressnaturally 4-byte aligned

Since there is no direct method for the BIOS or operating system to determine which PCI slots have devices installed (nor to determine which functions the device implements) the PCI bus(es) must be enumerated. Bus enumeration is performed by attempting to read the vendor ID and device ID (VID/DID) register for each combination of bus number and device number at the device's function #0.Note that device number, different from DID, is merely a device's sequential number on that bus. Moreover, after a new bridge is detected, a new bus number is defined, and device enumeration restarts at device number zero.

If no response is received from the device's function #0, the bus master performs an abort and returns an all-bits-on value (FFFFFFFF in hexadecimal), which is an invalid VID/DID value, thus a device driver can tell that the specified combination bus/device_number/function (B/D/F) is not present. So, when a read to a function ID of zero for a given bus/device causes the master (initiator) to abort, it must then be presumed that no working device exists on that bus because devices are required to implement function number zero. In this case, reads to the remaining functions numbers (1–7) are not necessary as they also will not exist.

When a read to a specified B/D/F combination for the vendor ID register succeeds, a device driver knows that it exists; it writes all ones to its BARs and reads back the device's requested memory size in an encoded form. The design implies that all address space sizes are a power of two and are naturally aligned.[1]

At this point, the BIOS or operating system will program the memory-mapped and I/O port addresses into the device's BAR configuration register. These addresses stay valid as long as the system remains turned on. Upon power-off, all these settings are lost and the procedure is repeated next time the system is powered back on. Since this entire process is fully automated, the user is spared the task of configuring any newly added hardware manually by changing DIP switches on the cards themselves. This automatic device discovery and address space assignment is how plug and play is implemented.

If a PCI-to-PCI bridge is found, the system must assign the secondary PCI bus beyond the bridge a bus number other than zero, and then enumerate the devices on that secondary bus. If more PCI bridges are found, the discovery continues recursively until all possible domain/bus/device combinations are scanned.

Each non-bridge PCI device function can implement up to 6 BARs, each of which can respond to different addresses in I/O port and memory-mapped address space. Each BAR describes a region [2][1] that is between 16 bytes and 2 gigabytes in size, located below 4 gigabyte address space limit. If a platform supports the 'Above 4G' option in system firmware, 64 bit bars can be used.

A PCI device can also have an option ROM which can contain driver code or configuration information.

Hardware implementation[edit]

When performing a Configuration Space access, a PCI device does not decode the address to determine if it should respond, but instead looks at the Initialization Device Select signal (IDSEL). There is a system-wide unique activation method for each IDSEL signal. The PCI device is required to decode only the lowest order 11 bits of the address space (AD[10] to AD[0]) address/data signals, and can ignore decoding the 21 high order A/D signals (AD[31] to AD[11]) because a Configuration Space access implementation has each slot's IDSEL pin connected to a different high order address/data line AD[11] through AD[31]. The IDSEL signal is a different pin for each PCI device/adapter slot.

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To configure the card in slot n, the PCI bus bridge performs a configuration-space access cycle with the PCI device's register to be addressed on lines AD[7:2] (AD[1:0] are always zero since registers are double words (32-bits)), and the PCI function number specified on bits AD[10:8], with all higher-order bits zeros except for AD[n+11] being used as the IDSEL signal on a given slot.

To reduce electrically loading down the timing critical (and thus electrically loading sensitive) AD[] bus, the IDSEL signal on the PCI slot connector is usually connected to its assigned AD[n+11] pin through a resistor. This causes the PCI's IDSEL signal to reach its active condition more slowly than other PCI bus signals (due to the RC time constant of both the resistor and the IDSEL pin's input capacitance). Thus Configuration Space accesses are performed more slowly to allow time for the IDSEL signal to reach a valid level.

The scanning on the bus is performed on the Intel platform by accessing two defined standardized ports. These ports are the Configuration Space Address (0xCF8) I/O port and Configuration Space Data (0xCFC) I/O port. The value written to the Configuration Space Address I/O port is created by combining B/D/F values and the registers address value into a 32-bit word.

Software implementation[edit]

Configuration reads and writes can be initiated from the CPU in two ways: one legacy method via I/O addresses 0xCF8 and 0xCFC, and another called memory-mapped configuration.[3]

The legacy method was present in the original PCI, and it is called Configuration Access Mechanism (CAM). It allows for 256 bytes of a device's address space to be reached indirectly via two 32-bit registers called PCI CONFIG_ADDRESS and PCI CONFIG_DATA. These registers are at addresses 0xCF8 and 0xCFC in the x86 I/O address space.[4] For example, a software driver (firmware, OS kernel or kernel driver) can use these registers to configure a PCI device by writing the address of the device's register into CONFIG_ADDRESS, and by putting the data that is supposed to be written to the device into CONFIG_DATA. Since this process requires a write to a register in order to write the device's register, it is referred to as 'indirection'.

The format of CONFIG_ADDRESS is the following:

As explained previously, addressing a device via Bus, Device, and Function (BDF) is also referred to as 'addressing a device geographically.' See arch/x86/pci/early.c in the Linux kernel code for an example of code that uses geographical addressing.[5]

When extended configuration space is used on some AMD CPUs, the extra bits 11:8 of the offset are written to bits 27:24 of the CONFIG_ADDRESS register:[6][7]

The second method was created for PCI Express. It is called Enhanced Configuration Access Mechanism (ECAM). It extends device's configuration space to 4k, with the bottom 256 bytes overlapping the original (legacy) configuration space in PCI. The section of the addressable space is 'stolen' so that the accesses from the CPU don't go to memory but rather reach a given device in the PCI Express fabric. During system initialization, firmware determines the base address for this 'stolen' address region and communicates it to the root complex and to the operating system. This communication method is implementation-specific, and not defined in the PCI Express specification.

Each device has its own 4 KiB space and each device's info is accessible through a simple array dev[bus][device][function] so that 256 MiB of physical contiguous space is 'stolen' for this use (256 buses × 32 devices × 8 functions × 4 KiB = 256 MiB). The base physical address of this array is not specified. For example, on modern x86 systems the ACPI tables contain the necessary information.[8]

See also[edit]

References[edit]

  1. ^ ab'Base Address Registers'. PCI. osdev.org. 2013-12-24. Retrieved 2014-04-17.CS1 maint: discouraged parameter (link)
  2. ^'PCI configuration methods'. cs.ucla.edu. 2011-11-22. Retrieved 2014-04-17.CS1 maint: discouraged parameter (link)
  3. ^'Accessing PCI Express* Configuration Registers Using Intel Chipsets'(PDF). Intel Corporation. Retrieved 27 September 2018.CS1 maint: discouraged parameter (link)
  4. ^'PCI Configuration Mechanism #1'. osdev.org. 2015-01-01. Retrieved 2015-01-01.CS1 maint: discouraged parameter (link)
  5. ^'kernel/git/stable/linux-stable.git: arch/x86/pci/early.c (Linux kernel stable tree, version 3.12.7)'. kernel.org. Retrieved 2014-01-10.CS1 maint: discouraged parameter (link)
  6. ^'kernel/git/stable/linux-stable.git: arch/x86/pci/direct.c (Linux kernel stable tree, version 3.12.7)'. kernel.org. Retrieved 2017-09-11.CS1 maint: discouraged parameter (link)
  7. ^Richter, Robert. 'x86: add PCI extended config space access for AMD Barcelona'. kernel.org. Retrieved 26 September 2018.CS1 maint: discouraged parameter (link)
  8. ^'XSDT - OSDev Wiki'. Retrieved 2017-04-30.CS1 maint: discouraged parameter (link)

External links[edit]

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  • The PCI ID Repository, a project to collect all known IDs
Retrieved from 'https://en.wikipedia.org/w/index.php?title=PCI_configuration_space&oldid=1020625458'




broken image