diff options
Diffstat (limited to 'src/dev/pci')
| -rw-r--r-- | src/dev/pci/PciHost.py | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/src/dev/pci/PciHost.py b/src/dev/pci/PciHost.py index f4f9e45e8..28405c198 100644 --- a/src/dev/pci/PciHost.py +++ b/src/dev/pci/PciHost.py @@ -1,4 +1,4 @@ -# Copyright (c) 2015 ARM Limited +# Copyright (c) 2015-2016 ARM Limited # All rights reserved # # The license below extends only to copyright in the software and shall @@ -34,6 +34,7 @@ # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # # Authors: Andreas Sandberg +# Glenn Bergmans from m5.SimObject import SimObject from m5.params import * @@ -62,3 +63,34 @@ class GenericPciHost(PciHost): pci_pio_base = Param.Addr(0, "Base address for PCI IO accesses") pci_mem_base = Param.Addr(0, "Base address for PCI memory accesses") pci_dma_base = Param.Addr(0, "Base address for DMA memory accesses") + + def pciFdtAddr(self, bus=0, device=0, function=0, register=0, space=0, + aliased=0, prefetchable=0, relocatable=0, addr=0): + + busf = bus & 0xff + devicef = device & 0x1f + functionf = function & 0x7 + registerf = register & 0xff + spacef = space & 0x3 + aliasedf = aliased & 0x1 + prefetchablef = prefetchable & 0x1 + relocatablef = relocatable & 0x1 + + if busf != bus or \ + devicef != device or \ + functionf != function or \ + registerf != register or \ + spacef != space or \ + aliasedf != aliased or \ + prefetchablef != prefetchable or \ + relocatablef != relocatable: + fatal("One of the fields for the PCI address is out of bounds") + + address = registerf | (functionf << 8) | (devicef << 11) | \ + (busf << 16) | (spacef << 24) | (aliasedf << 29) | \ + (prefetchablef << 30) | (relocatablef << 31) + + low_addr = addr & 0xffffffff + high_addr = (addr >> 32) & 0xffffffff + + return [address, high_addr, low_addr] |