Date: Fri, 24 Mar 2017 17:38:29 -0700 From: Christopher Bowman <crb@chrisbowman.com> To: freebsd-hackers@freebsd.org Subject: large PCIe BARs Message-ID: <21FF81F3-D290-4682-AB88-5769C52499C3@chrisbowman.com>
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I have an FPGA PCIe device and driver I designing. I think my driver is trying to map the PCIe address space for one of the BARs and it’s failing. My guess is that it’s failing due to the size. The board has 2G of onboard memory that I’d like to present as one large BAR. Does FreeBSD (11.0 release) allow for mapping PCIe resources that larger? If not is there a limit? If so any one have any comments? Thanks, Christopher sp6050: probing for SP605 sp6050: <Xilinx SP605 board> at device 0.0 on pci3 sp6050: attach of SP605 sp6050: 0x40000000 bytes of rid 0x10 res 3 failed (0, 0xffffffffffffffff). sp6050: Could not map memory device_attach: sp6050 attach returned 6
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