Re: sio i/o
actually, i will code that as a pseudo device to manage a small box over serial line that manages some external devices. and i was also curious to know how to do it in userland, but i know i/o feels better in kernel :-) On Thu, Nov 07, 2002 at 10:23:16AM -0800, Julian Elischer wrote: > > > On Thu, 7 Nov 2002, John Baldwin wrote: > > > > > On 07-Nov-2002 Julien Mabillard wrote: > > > hi, > > > can anyone tell me where inb(), outb() are defined > > > in the sources (FreeBSD RELENG_4_7 or CURRENT)? > > > on linux systems this is defined in > > > > For FreeBSD should be using bus_space_read_1() and bus_space_write_1() > > instead. However, you can find inb() and outb() in > > on i386 and compatibility macros for some other > > arch's in > > > > it depends if he wants to do it in or out of the kernel.. > He doesn't specify.. > :-/ > > > > > -- > > > > John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ > > "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > with "unsubscribe freebsd-hackers" in the body of the message > > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message -- Key fingerprint = D34A 577C 869B 28A2 3886 4298 50CB DC18 31A4 ACAD email: [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: sio i/o
Christoph Hellwig wrote: > Umm, ispurely a userland header on linux, so he's probably > referring to the userland versions of those that are provided by the > linux ports with PC-like hardware.. Then the answer is even easier: Don't do it from userland, since you should not be using sys header files that came from /sys//include from user space, at all. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
RE: sio i/o
On Thu, 7 Nov 2002, John Baldwin wrote: > > On 07-Nov-2002 Julien Mabillard wrote: > > hi, > > can anyone tell me where inb(), outb() are defined > > in the sources (FreeBSD RELENG_4_7 or CURRENT)? > > on linux systems this is defined in > > For FreeBSD should be using bus_space_read_1() and bus_space_write_1() > instead. However, you can find inb() and outb() in > on i386 and compatibility macros for some other > arch's in > it depends if he wants to do it in or out of the kernel.. He doesn't specify.. :-/ > -- > > John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ > "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: sio i/o
from memory, however note that outb has the arguments in the opposite order. On Thu, 7 Nov 2002, Julien Mabillard wrote: > hi, > can anyone tell me where inb(), outb() are defined > in the sources (FreeBSD RELENG_4_7 or CURRENT)? > on linux systems this is defined in > > thank you. > > > Key fingerprint = D34A 577C 869B 28A2 3886 4298 50CB DC18 31A4 ACAD > > email: [EMAIL PROTECTED] > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: sio i/o
FWIW, regarding direct user application access to I/O space, (a technique to be avoided if at all possible, but sometimes useful for those "1-hour emergency" projects, see the question "How do I directly access I/O devices from an application program (use in and out instructions)?" In the picobsd FAQ at: http://alumni.cse.ucsc.edu/~brucem/pico_notes.htm http://www.cse.ucsc.edu/~brucem/pico_notes.htm It has an example program for FreeBSD 4.3. In short, open ``/dev/io''. Hold the handle for as short a period as possible. Include - bruce To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: sio i/o
On Thu, Nov 07, 2002 at 10:51:31AM -0500, John Baldwin wrote: > Doing I/O from userland generally isn't supported. A header with > is a kernel header though, not a userland one. :) Only on traditional Unix systems. On Linux it never is. > For i386-only, if > you do the right calls to obtain permission to do I/O, the functions > in machine/cpufunc.h should work however. Of course you need the permission on linux aswell, and again only a small number of ports actually supports it. It's generally discuraged. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: sio i/o
On 07-Nov-2002 Christoph Hellwig wrote: > On Thu, Nov 07, 2002 at 09:33:29AM -0500, John Baldwin wrote: >> >> On 07-Nov-2002 Julien Mabillard wrote: >> > hi, >> > can anyone tell me where inb(), outb() are defined >> > in the sources (FreeBSD RELENG_4_7 or CURRENT)? >> > on linux systems this is defined in >> >> For FreeBSD should be using bus_space_read_1() and bus_space_write_1() >> instead. However, you can find inb() and outb() in >> on i386 and compatibility macros for some other >> arch's in > > Umm, ispurely a userland header on linux, so he's probably > referring to the userland versions of those that are provided by the > linux ports with PC-like hardware.. Doing I/O from userland generally isn't supported. A header with is a kernel header though, not a userland one. :) For i386-only, if you do the right calls to obtain permission to do I/O, the functions in machine/cpufunc.h should work however. -- John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: sio i/o
On Thu, Nov 07, 2002 at 09:33:29AM -0500, John Baldwin wrote: > > On 07-Nov-2002 Julien Mabillard wrote: > > hi, > > can anyone tell me where inb(), outb() are defined > > in the sources (FreeBSD RELENG_4_7 or CURRENT)? > > on linux systems this is defined in > > For FreeBSD should be using bus_space_read_1() and bus_space_write_1() > instead. However, you can find inb() and outb() in > on i386 and compatibility macros for some other > arch's in Umm, ispurely a userland header on linux, so he's probably referring to the userland versions of those that are provided by the linux ports with PC-like hardware.. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: sio i/o
great, thanks :-) On Thu, Nov 07, 2002 at 09:33:29AM -0500, John Baldwin wrote: > > On 07-Nov-2002 Julien Mabillard wrote: > > hi, > > can anyone tell me where inb(), outb() are defined > > in the sources (FreeBSD RELENG_4_7 or CURRENT)? > > on linux systems this is defined in > > For FreeBSD should be using bus_space_read_1() and bus_space_write_1() > instead. However, you can find inb() and outb() in > on i386 and compatibility macros for some other > arch's in > > -- > > John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ > "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message -- Key fingerprint = D34A 577C 869B 28A2 3886 4298 50CB DC18 31A4 ACAD email: [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
RE: sio i/o
On 07-Nov-2002 Julien Mabillard wrote: > hi, > can anyone tell me where inb(), outb() are defined > in the sources (FreeBSD RELENG_4_7 or CURRENT)? > on linux systems this is defined in For FreeBSD should be using bus_space_read_1() and bus_space_write_1() instead. However, you can find inb() and outb() in on i386 and compatibility macros for some other arch's in -- John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
sio i/o
hi, can anyone tell me where inb(), outb() are defined in the sources (FreeBSD RELENG_4_7 or CURRENT)? on linux systems this is defined in thank you. Key fingerprint = D34A 577C 869B 28A2 3886 4298 50CB DC18 31A4 ACAD email: [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
