Let's provide a more general way to scan PCI bars, rather than read the
config registers every time.
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
---
lib/pci.c | 13 ++++++++++++-
lib/pci.h | 3 +++
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/lib/pci.c b/lib/pci.c
index c0bbcba..c063d53 100644
--- a/lib/pci.c
+++ b/lib/pci.c
@@ -206,7 +206,7 @@ static void pci_dev_print(pcidevaddr_t dev)
if ((header & PCI_HEADER_TYPE_MASK) != PCI_HEADER_TYPE_NORMAL)
return;
- for (i = 0; i < 6; i++) {
+ for (i = 0; i < PCI_BAR_NUM; i++) {
if (pci_bar_size(&pci_dev, i)) {
printf("\t");
pci_bar_print(&pci_dev, i);
@@ -226,3 +226,14 @@ void pci_print(void)
pci_dev_print(dev);
}
}
+
+void pci_scan_bars(struct pci_dev *dev)
+{
+ int i = 0;
+
+ for (i = 0; i < PCI_BAR_NUM; i++) {
+ if (!pci_bar_is_valid(dev, i))
+ continue;
+ dev->bar[i] = pci_bar_get_addr(dev, i);
+ }
+}
diff --git a/lib/pci.h b/lib/pci.h
index 21f5a7b..5ed4e11 100644
--- a/lib/pci.h
+++ b/lib/pci.h
@@ -15,13 +15,16 @@ enum {
PCIDEVADDR_INVALID = 0xffff,
};
+#define PCI_BAR_NUM (6)
#define PCI_DEVFN_MAX (256)
struct pci_dev {
uint16_t bdf;
+ phys_addr_t bar[PCI_BAR_NUM];
};
void pci_dev_init(struct pci_dev *dev, pcidevaddr_t bdf);
+void pci_scan_bars(struct pci_dev *dev);
extern bool pci_probe(void);
extern void pci_print(void);
--
2.7.4
--
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