Hello,
On Tue, 18 Nov 2014 10:55:42 +0100, Thomas Petazzoni wrote:
> Since next-20141117, PCI support is broken on ARM Marvell EBU
> platforms. next-20141114 was working fine. The problem we see is:
>
> pci 0000:03:00.0: reg 0x10: can't handle BAR larger than 4GB (size 0xfffffffffff00000)
Another issue (possibly related, or not), is the following compile time
warning:
/home/thomas/projets/linux-2.6/drivers/pci/probe.c: In function ‘pci_read_bridge_mmio_pref’:
/home/thomas/projets/linux-2.6/drivers/pci/probe.c:430:5: warning: left shift count >= width of type
base |= ((dma_addr_t) mem_base_hi) << 32;
^
/home/thomas/projets/linux-2.6/drivers/pci/probe.c:431:5: warning: left shift count >= width of type
limit |= ((dma_addr_t) mem_limit_hi) << 32;
^
This happens because dma_addr_t is 32 bits on ARM platforms, which
isn't properly taken into account by the commit that introduces support
for 64 bits DMA addresses.
Best regards,
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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