topic mmap & mcf547x_8x broken? in ColdFire/68K Microcontrollers and Processors https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/mmap-mcf547x-8x-broken/m-p/184065#M7647 <HTML><HEAD></HEAD><BODY><SPAN>Hi all,</SPAN><BR /><BR /><SPAN>I've been trying the mcf547x_8x - 2.6.25 release for the last two weeks and it performs better than 2.6.10 by eons, at least for our application.</SPAN><BR /><BR /><SPAN>One thing I'm still having problems with is mmap. Take the vfb for instance, any reads or writes to its memory results in a sigsegv.</SPAN><BR /><SPAN>The weird part is if I'm using /dev/mem with an offset, I can mmap without any issues at all.</SPAN><BR /><SPAN>What I want to do is allocate memory in my driver (vmalloc because of size) but mmap it to userspace.</SPAN><BR /><BR /><SPAN>Any ideas? I tried the suggestion in an older thread about adding DIRTY and WRITABLE to _S001 and _S011 but without luck.</SPAN><BR /><BR /><SPAN>Best,</SPAN><BR /><SPAN>Andreas</SPAN><BR /><DIV> </DIV></BODY></HTML> Sat, 06 Sep 2008 13:38:44 GMT aeg 2008-09-06T13:38:44Z mmap & mcf547x_8x broken? https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/mmap-mcf547x-8x-broken/m-p/184065#M7647 <HTML><HEAD></HEAD><BODY><SPAN>Hi all,</SPAN><BR /><BR /><SPAN>I've been trying the mcf547x_8x - 2.6.25 release for the last two weeks and it performs better than 2.6.10 by eons, at least for our application.</SPAN><BR /><BR /><SPAN>One thing I'm still having problems with is mmap. Take the vfb for instance, any reads or writes to its memory results in a sigsegv.</SPAN><BR /><SPAN>The weird part is if I'm using /dev/mem with an offset, I can mmap without any issues at all.</SPAN><BR /><SPAN>What I want to do is allocate memory in my driver (vmalloc because of size) but mmap it to userspace.</SPAN><BR /><BR /><SPAN>Any ideas? I tried the suggestion in an older thread about adding DIRTY and WRITABLE to _S001 and _S011 but without luck.</SPAN><BR /><BR /><SPAN>Best,</SPAN><BR /><SPAN>Andreas</SPAN><BR /><DIV> </DIV></BODY></HTML> Sat, 06 Sep 2008 13:38:44 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/mmap-mcf547x-8x-broken/m-p/184065#M7647 aeg 2008-09-06T13:38:44Z Re: mmap & mcf547x_8x broken? https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/mmap-mcf547x-8x-broken/m-p/184066#M7648 <HTML><HEAD></HEAD><BODY><DIV></DIV>I have consulted with one of our engineers here. He does not have enough information on the problem, and recommends that you file a Service Request, with more details.<BR /><BR />To file a service request, click <A href="https://www.freescale.com/webapp/servicerequest.create_SR.framework" rel="nofollow" target="_blank">here</A>.<BR /><BR />---Tom<BR /><DIV></DIV></BODY></HTML> Tue, 09 Sep 2008 19:43:36 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/mmap-mcf547x-8x-broken/m-p/184066#M7648 J2MEJediMaster 2008-09-09T19:43:36Z