The low twelve bits of memory base/limit are assumed to be all zeros
and all ones, respectively. Therefore, a window with base == limit
is a valid 4K window, which we should display by default, and the
true end of the window is ...fff, not ...000. For example,
05:07.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
...
- Memory window 0: 88000000-8bfff000 (prefetchable)
+ Memory window 0: 88000000-8bffffff (prefetchable)
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
lspci.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/lspci.c b/lspci.c
index bca1ccb..681ef6a 100644
--- a/lspci.c
+++ b/lspci.c
@@ -590,7 +590,8 @@ show_htype2(struct device *d)
int p = 8*i;
u32 base = get_conf_long(d, PCI_CB_MEMORY_BASE_0 + p);
u32 limit = get_conf_long(d, PCI_CB_MEMORY_LIMIT_0 + p);
- if (limit > base || verb)
+ limit = limit + 0xfff;
+ if (base <= limit || verb)
printf("\tMemory window %d: %08x-%08x%s%s\n", i, base, limit,
(cmd & PCI_COMMAND_MEMORY) ? "" : " [disabled]",
(brc & (PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 << i)) ? " (prefetchable)" : "");
--
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