Re: Sandisk Compact Flash
HI David , Thanks a Lot for clearing all the doubts , yes its the drawback of my hardware which i cant use high speed compact flash as DMA is not supported , Is there anyway with the help of software to message that , this compact flash cant be used anymore , first of all is this a good idea to have such a functinality on embedded system of saying compact flash is going to die please replace it , or just by the number of years of compact flash we say replace the compact flash Thanks In Advance Somshekar (Embedded David Hinds <[EMAIL PROTECTED]> image moved 07/20/2005 09:56 PM to file: pic18875.pcx) To:[EMAIL PROTECTED] cc:linux-kernel@vger.kernel.org Subject: Re: Sandisk Compact Flash Security Level:? Internal On Wed, Jul 20, 2005 at 12:49:00PM +0530, [EMAIL PROTECTED] wrote: > > Hi David , > > On my controller CF INPACK pin is connected to 3.3v. so Comapct > flash with DMA capabilty will not be supported , i understood this . > but i did not undesrtand why only PIO mode 1 is supported is it , > why not PIO mode 4 , is it a limitation of pcmcia driver , correct > me if i am wrong The 16-bit PCMCIA bus is maxed out at about 1 MB/sec; that's all the bandwidth there is. What your card supports is irrelevant. I'm not sure whether the PCMCIA mode actually corresponds to any of the official PIO modes 0, 1, etc. It is just "slow". -- Dave pic18875.pcx Description: Binary data
Re: Sandisk Compact Flash
HI David , Thanks a Lot for clearing all the doubts , yes its the drawback of my hardware which i cant use high speed compact flash as DMA is not supported , Is there anyway with the help of software to message that , this compact flash cant be used anymore , first of all is this a good idea to have such a functinality on embedded system of saying compact flash is going to die please replace it , or just by the number of years of compact flash we say replace the compact flash Thanks In Advance Somshekar (Embedded David Hinds [EMAIL PROTECTED] image moved 07/20/2005 09:56 PM to file: pic18875.pcx) To:[EMAIL PROTECTED] cc:linux-kernel@vger.kernel.org Subject:Re: Sandisk Compact Flash Security Level:? Internal On Wed, Jul 20, 2005 at 12:49:00PM +0530, [EMAIL PROTECTED] wrote: Hi David , On my controller CF INPACK pin is connected to 3.3v. so Comapct flash with DMA capabilty will not be supported , i understood this . but i did not undesrtand why only PIO mode 1 is supported is it , why not PIO mode 4 , is it a limitation of pcmcia driver , correct me if i am wrong The 16-bit PCMCIA bus is maxed out at about 1 MB/sec; that's all the bandwidth there is. What your card supports is irrelevant. I'm not sure whether the PCMCIA mode actually corresponds to any of the official PIO modes 0, 1, etc. It is just slow. -- Dave pic18875.pcx Description: Binary data
Re: Sandisk Compact Flash
On Wed, Jul 20, 2005 at 12:49:00PM +0530, [EMAIL PROTECTED] wrote: > > Hi David , > > On my controller CF INPACK pin is connected to 3.3v. so Comapct > flash with DMA capabilty will not be supported , i understood this . > but i did not undesrtand why only PIO mode 1 is supported is it , > why not PIO mode 4 , is it a limitation of pcmcia driver , correct > me if i am wrong The 16-bit PCMCIA bus is maxed out at about 1 MB/sec; that's all the bandwidth there is. What your card supports is irrelevant. I'm not sure whether the PCMCIA mode actually corresponds to any of the official PIO modes 0, 1, etc. It is just "slow". -- Dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
Hi David , On my controller CF INPACK pin is connected to 3.3v. so Comapct flash with DMA capabilty will not be supported , i understood this . but i did not undesrtand why only PIO mode 1 is supported is it , why not PIO mode 4 , is it a limitation of pcmcia driver , correct me if i am wrong Thanks In Advance Somshekar (Embedded David Hinds <[EMAIL PROTECTED]> image moved 07/15/2005 10:51 AM to file: pic05705.pcx) To:[EMAIL PROTECTED] cc:linux-kernel@vger.kernel.org Subject: Re: Sandisk Compact Flash Security Level:? Internal On Wed, Jul 13, 2005 at 07:04:38PM +0530, [EMAIL PROTECTED] wrote: > > I ma newbie to compactflash driver , I am using mpc862 PPC processor > on my custom board having 64mb ram running linuxppc-2.4.18 kernel . > i am using Sandisk Extreme CF 1GB which is 133x high speed, but > found the performance with other kingston 1GB CF with slower speed , > is both same , CF is implemented on pcmcia port , i am not sure what > is the mode set for transfer , Feature set command is used in which > it sets the PIO mode or Multiword DMA transfer mode by specifying > its value in Sector count register , i am not able to understand in > linux kernel ide driver where this is set , is it by default set , > this mode is set or we need to set it , i think we should assign > this value , right now i am not able to trace this in my code. , All Compact Flash cards, in 16-bit PCMCIA card readers, operate in PIO mode 1 (polled IO, no DMA), which means you will get only about 1 MB/sec regardless of the card's claimed tranfer speed. Some cameras also only support this mode; others will run CF cars in "TrueIDE" mode, which is required to use the DMA transfer modes. There are high performance CF card readers that can use TrueIDE mode: both CardBus ones and Firewire ones. For example: http://www.dpreview.com/news/0310/03102103delkincardbustest.asp It sounds like your card reader is one of the slow 16-bit ones. -- Dave pic05705.pcx Description: Binary data
Re: Sandisk Compact Flash
Hi David , On my controller CF INPACK pin is connected to 3.3v. so Comapct flash with DMA capabilty will not be supported , i understood this . but i did not undesrtand why only PIO mode 1 is supported is it , why not PIO mode 4 , is it a limitation of pcmcia driver , correct me if i am wrong Thanks In Advance Somshekar (Embedded David Hinds [EMAIL PROTECTED] image moved 07/15/2005 10:51 AM to file: pic05705.pcx) To:[EMAIL PROTECTED] cc:linux-kernel@vger.kernel.org Subject:Re: Sandisk Compact Flash Security Level:? Internal On Wed, Jul 13, 2005 at 07:04:38PM +0530, [EMAIL PROTECTED] wrote: I ma newbie to compactflash driver , I am using mpc862 PPC processor on my custom board having 64mb ram running linuxppc-2.4.18 kernel . i am using Sandisk Extreme CF 1GB which is 133x high speed, but found the performance with other kingston 1GB CF with slower speed , is both same , CF is implemented on pcmcia port , i am not sure what is the mode set for transfer , Feature set command is used in which it sets the PIO mode or Multiword DMA transfer mode by specifying its value in Sector count register , i am not able to understand in linux kernel ide driver where this is set , is it by default set , this mode is set or we need to set it , i think we should assign this value , right now i am not able to trace this in my code. , All Compact Flash cards, in 16-bit PCMCIA card readers, operate in PIO mode 1 (polled IO, no DMA), which means you will get only about 1 MB/sec regardless of the card's claimed tranfer speed. Some cameras also only support this mode; others will run CF cars in TrueIDE mode, which is required to use the DMA transfer modes. There are high performance CF card readers that can use TrueIDE mode: both CardBus ones and Firewire ones. For example: http://www.dpreview.com/news/0310/03102103delkincardbustest.asp It sounds like your card reader is one of the slow 16-bit ones. -- Dave pic05705.pcx Description: Binary data
Re: Sandisk Compact Flash
On Wed, Jul 20, 2005 at 12:49:00PM +0530, [EMAIL PROTECTED] wrote: Hi David , On my controller CF INPACK pin is connected to 3.3v. so Comapct flash with DMA capabilty will not be supported , i understood this . but i did not undesrtand why only PIO mode 1 is supported is it , why not PIO mode 4 , is it a limitation of pcmcia driver , correct me if i am wrong The 16-bit PCMCIA bus is maxed out at about 1 MB/sec; that's all the bandwidth there is. What your card supports is irrelevant. I'm not sure whether the PCMCIA mode actually corresponds to any of the official PIO modes 0, 1, etc. It is just slow. -- Dave - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
So then you will have to reboot sometimes. BTW, IDE can be hot swapped if you are carefull: Umount the device, unplug it. Plug in the same device (same model) Remount. A bit risky to your hardware, but I have used this way for harddisks several time when a system has to keep running. Never used it for compact flash though. Another option: Buy an USB card controller or a pcmcia controller for in your pc. Costs about $10,- Op zaterdag 16 juli 2005 18:31, schreef u: > On Sat, Jul 16, 2005 at 03:04:54AM -0400, Michael Krufky wrote: > > I recommend picking up a CF-to-IDE adapter, such as this: > > > > http://www.acscontrol.com/Index_ACS.asp?Page=/Pages/Products/CompactFlash > >/IDE_To_CF_Adapter.htm > > That's fine if you have a spare IDE port, but unlikely if you're > using a laptop. Also these do not support hot swapping. > > -- Dave > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
On Sat, Jul 16, 2005 at 03:04:54AM -0400, Michael Krufky wrote: > I recommend picking up a CF-to-IDE adapter, such as this: > > http://www.acscontrol.com/Index_ACS.asp?Page=/Pages/Products/CompactFlash/IDE_To_CF_Adapter.htm That's fine if you have a spare IDE port, but unlikely if you're using a laptop. Also these do not support hot swapping. -- Dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
David Hinds wrote: On Wed, Jul 13, 2005 at 07:04:38PM +0530, [EMAIL PROTECTED] wrote: I ma newbie to compactflash driver , I am using mpc862 PPC processor on my custom board having 64mb ram running linuxppc-2.4.18 kernel . i am using Sandisk Extreme CF 1GB which is 133x high speed, but found the performance with other kingston 1GB CF with slower speed , is both same , CF is implemented on pcmcia port , i am not sure what is the mode set for transfer , Feature set command is used in which it sets the PIO mode or Multiword DMA transfer mode by specifying its value in Sector count register , i am not able to understand in linux kernel ide driver where this is set , is it by default set , this mode is set or we need to set it , i think we should assign this value , right now i am not able to trace this in my code. , It sounds like your card reader is one of the slow 16-bit ones. I recommend picking up a CF-to-IDE adapter, such as this: http://www.acscontrol.com/Index_ACS.asp?Page=/Pages/Products/CompactFlash/IDE_To_CF_Adapter.htm ...It works great for me! There are a bunch of companies selling these... Google "cf ide adapter". -- Michael Krufky - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
David Hinds wrote: On Wed, Jul 13, 2005 at 07:04:38PM +0530, [EMAIL PROTECTED] wrote: I ma newbie to compactflash driver , I am using mpc862 PPC processor on my custom board having 64mb ram running linuxppc-2.4.18 kernel . i am using Sandisk Extreme CF 1GB which is 133x high speed, but found the performance with other kingston 1GB CF with slower speed , is both same , CF is implemented on pcmcia port , i am not sure what is the mode set for transfer , Feature set command is used in which it sets the PIO mode or Multiword DMA transfer mode by specifying its value in Sector count register , i am not able to understand in linux kernel ide driver where this is set , is it by default set , this mode is set or we need to set it , i think we should assign this value , right now i am not able to trace this in my code. , It sounds like your card reader is one of the slow 16-bit ones. I recommend picking up a CF-to-IDE adapter, such as this: http://www.acscontrol.com/Index_ACS.asp?Page=/Pages/Products/CompactFlash/IDE_To_CF_Adapter.htm ...It works great for me! There are a bunch of companies selling these... Google cf ide adapter. -- Michael Krufky - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
On Sat, Jul 16, 2005 at 03:04:54AM -0400, Michael Krufky wrote: I recommend picking up a CF-to-IDE adapter, such as this: http://www.acscontrol.com/Index_ACS.asp?Page=/Pages/Products/CompactFlash/IDE_To_CF_Adapter.htm That's fine if you have a spare IDE port, but unlikely if you're using a laptop. Also these do not support hot swapping. -- Dave - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
So then you will have to reboot sometimes. BTW, IDE can be hot swapped if you are carefull: Umount the device, unplug it. Plug in the same device (same model) Remount. A bit risky to your hardware, but I have used this way for harddisks several time when a system has to keep running. Never used it for compact flash though. Another option: Buy an USB card controller or a pcmcia controller for in your pc. Costs about $10,- Op zaterdag 16 juli 2005 18:31, schreef u: On Sat, Jul 16, 2005 at 03:04:54AM -0400, Michael Krufky wrote: I recommend picking up a CF-to-IDE adapter, such as this: http://www.acscontrol.com/Index_ACS.asp?Page=/Pages/Products/CompactFlash /IDE_To_CF_Adapter.htm That's fine if you have a spare IDE port, but unlikely if you're using a laptop. Also these do not support hot swapping. -- Dave - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
On Wed, Jul 13, 2005 at 07:04:38PM +0530, [EMAIL PROTECTED] wrote: > > I ma newbie to compactflash driver , I am using mpc862 PPC processor > on my custom board having 64mb ram running linuxppc-2.4.18 kernel . > i am using Sandisk Extreme CF 1GB which is 133x high speed, but > found the performance with other kingston 1GB CF with slower speed , > is both same , CF is implemented on pcmcia port , i am not sure what > is the mode set for transfer , Feature set command is used in which > it sets the PIO mode or Multiword DMA transfer mode by specifying > its value in Sector count register , i am not able to understand in > linux kernel ide driver where this is set , is it by default set , > this mode is set or we need to set it , i think we should assign > this value , right now i am not able to trace this in my code. , All Compact Flash cards, in 16-bit PCMCIA card readers, operate in PIO mode 1 (polled IO, no DMA), which means you will get only about 1 MB/sec regardless of the card's claimed tranfer speed. Some cameras also only support this mode; others will run CF cars in "TrueIDE" mode, which is required to use the DMA transfer modes. There are high performance CF card readers that can use TrueIDE mode: both CardBus ones and Firewire ones. For example: http://www.dpreview.com/news/0310/03102103delkincardbustest.asp It sounds like your card reader is one of the slow 16-bit ones. -- Dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Sandisk Compact Flash
On Wed, Jul 13, 2005 at 07:04:38PM +0530, [EMAIL PROTECTED] wrote: I ma newbie to compactflash driver , I am using mpc862 PPC processor on my custom board having 64mb ram running linuxppc-2.4.18 kernel . i am using Sandisk Extreme CF 1GB which is 133x high speed, but found the performance with other kingston 1GB CF with slower speed , is both same , CF is implemented on pcmcia port , i am not sure what is the mode set for transfer , Feature set command is used in which it sets the PIO mode or Multiword DMA transfer mode by specifying its value in Sector count register , i am not able to understand in linux kernel ide driver where this is set , is it by default set , this mode is set or we need to set it , i think we should assign this value , right now i am not able to trace this in my code. , All Compact Flash cards, in 16-bit PCMCIA card readers, operate in PIO mode 1 (polled IO, no DMA), which means you will get only about 1 MB/sec regardless of the card's claimed tranfer speed. Some cameras also only support this mode; others will run CF cars in TrueIDE mode, which is required to use the DMA transfer modes. There are high performance CF card readers that can use TrueIDE mode: both CardBus ones and Firewire ones. For example: http://www.dpreview.com/news/0310/03102103delkincardbustest.asp It sounds like your card reader is one of the slow 16-bit ones. -- Dave - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
