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<damo22>almuhs: i plan to add ACPICA code to gnumach and have a full parser in there

<almuhs>then, do I wait you?

<damo22>i cant do it today i have to work

<almuhs>until you will have finished your ACPICA work

<almuhs>I'm not refering wait today

<damo22>perhaps look at the acpica code and you can find the functions you need

<almuhs>but, where is acpica code? in Linux?

<damo22> https://github.com/acpica/acpica is upstream but there is a script generate/linux/gen-repo.sh

<damo22>it generates the nicely formatted linux version

<damo22>i think we should start with that

<almuhs>ok

<damo22>you could write a userspace program that calls acpica functions to test

<almuhs>my idea was start refactoring my code. But, in fact, ACPICA is a more serious implementation

<damo22>the only reason i want to use it is because the PCI interrupt mappings are buried in the ASL

<damo22>so we need the parser

<almuhs>It's true

<almuhs>then It's better as this way

<damo22>the code is BSD licenced so it should not be a problem to include in gnumach

<almuhs>yes

<almuhs>do we have to map any structure?

<damo22>i was planning to add some glue that would allow the initial table to be mapped i havent looked into it yet

<almuhs>Samuel have just explained me how to set a temporary mapping using paging https://lists.gnu.org/archive/html/bug-hurd/2020-04/msg00075.html

<almuhs>as this way, we avoid the strange shifting addressing

<almuhs>with a cleaner code

<damo22>ok, i must go to work now

<almuhs>ok

<almuhs>notice me about your work with ACPICA

<almuhs>when you have any advance

<damo22>sure

<almuhs>thanks

<damo22>the code is portable you should be able to test your implementation in userspace

<almuhs>but I need any special requirement to compile It in Hurd?

<damo22>you would need to write a wrapper to map the table possibly

<damo22>idk

<almuhs>ok

<damo22>but might be worth doing if you have to wait for me

<almuhs>what?

<damo22>i mean if you are waiting for gnumach to have acpica, you might want to write something in userspace that can be moved into gnumach later

<damo22>acpica just gives you the tables

<damo22>and a few functions as api

<almuhs>then, after this, we have to parse It

<damo22>yeah, try to familiarise yourself with the api

<almuhs>where is the api docs?

<damo22>in the code

<almuhs>ok

<almuhs>this? https://github.com/acpica/acpica/tree/master/documents

<damo22>on top of every function is a description

<almuhs>ok

<damo22>i think the code is easier to work with

<almuhs>does the code is in the sources directory?

<damo22>or read the linux kernel for inspiration on how it parses the tables

<almuhs>**is the code in the sources directory?

<damo22>yes

<damo22>drivers/acpi/

<almuhs>in my code I have a manual parser, so I know the "travel" to find the tables and how to extract APIC structures. Maybe this can be a helpful

<damo22>yes

<damo22>try to work out the equivalent code to call in acpica

<damo22>it will save time later

<almuhs>ok

<almuhs>where is drivers/acpi ? I don't found It in acpica repository

<damo22>drivers/acpi is in the linux kernel if you want to know how linux does it

<almuhs>oh, ok

<damo22>see ya

***Server sets mode: +nt

<gnu_srs1>Is a call to write (3, "", 1) expected to fail with a SIGPIPE: Broken pipe?

<youpi>gnu_srs1: if the reader closed its side, yes

<almuhs>hi. I've just installed acpica in Debian GNU/Linux. Now I have to learn how to use It

<almuhs>using ACPICA command line, "sudo acpidump -n APIC" return APIC table

<almuhs>but, how to do acpica from C?

<almuhs>**how to use

<almuhs>I found docs: https://acpica.org/sites/acpica/files/acpica-reference_18.pdf

<almuhs> https://acpica.org/sites/acpica/files/asl_tutorial_v20190625.pdf

<almuhs>damo22: read page 124 (8.2.9) in acpica-reference_18.pdf . I think that this are the function which we need to find ACPI tables?

<almuhs>AcpiGetTable() and AcpiGetTableByIndex()

<almuhs>but I don't know what is the library name. what #include must I to add in the code?

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2020-04-23.log