Can someone please assist me with this issue? I got no response... -----Original Message----- From: Barak Fargoun Sent: Sunday, October 25, 2009 3:56 AM To: 'linux-pci@xxxxxxxxxxxxxxx' Cc: Barak Fargoun Subject: Question regarding cardbus memory windows addresses above 4GB Hi all, I have a machine with 4GB RAM (a Dell e6400 model), and i am experiencing a very strange thing: the memory windows of the cardbus bridge, are located (as reported by 'cat /proc/iomem') at addresses which are above 4GB (e.g.: 0x120000000). The strange things in this are: 1. I didn't saw in the cardbus spec (well, at least not in the one I have) - that it's possible for the cardbus bridge to have memory windows, which are more than 32 bit. 2. 'lspci' on the cardbus device, fails to identify the correct memory windows of the cardbus device, and reports only the 32-bit portion of those addresses (e.g.: 0x20000000, instead of 0x120000000) 3. When I took a look at the cardbus setup code inside the Linux kernel, I saw that the code which setups the memory windows of the device, is writing only 32-bit for the memory window (dword), and therefore, I can't understand, how can he use 64-bit address, while writing only 32-bit address. Can someone please help me with this? Barak -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
