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freebsd11_network: calculate the size of memory resources from the BAR

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128kB ought to be enough for everyone, but that's not a reason.
This commit is contained in:
François Revol 2018-08-10 07:18:49 +02:00
parent ba88131cfd
commit 4cd13e2a54
1 changed files with 7 additions and 2 deletions
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9
src/libs/compat/freebsd11_network/bus.cpp
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@ -115,8 +115,13 @@ bus_alloc_irq_resource(device_t dev, struct resource *res)
static int
bus_alloc_mem_resource(device_t dev, struct resource *res, int regid)
{
uint32 addr = pci_read_config(dev, regid, 4) & PCI_address_memory_32_mask;
uint32 size = 128 * 1024; /* XXX */
/* TODO: check the offset really is of a BAR */
uint32 bar = pci_read_config(dev, regid, 4);
uint32 addr = bar & PCI_address_memory_32_mask;
pci_write_config(dev, regid, ~0, 4);
uint32 size = pci_read_config(dev, regid, 4) & PCI_address_memory_32_mask;
size = (~size) + 1;
pci_write_config(dev, regid, bar, 4);
void *virtualAddr;
res->r_mapped_area = map_mem(&virtualAddr, addr, size, 0,