There is an existing function prototype in the header file but it is not
implemented. Implement something similar.
Signed-off-by: Simon Glass <s...@chromium.org>
---
drivers/pci/pci.c | 38 ++++++++++++++++++++++++++++++++++++++
include/pci.h | 3 +--
2 files changed, 39 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 950a247..215a092 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -15,6 +15,7 @@
#include <common.h>
#include <command.h>
+#include <errno.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <pci.h>
@@ -236,6 +237,43 @@ pci_dev_t pci_find_devices(struct pci_device_id *ids, int
index)
return -1;
}
+pci_dev_t pci_find_class(uint find_class, int index)
+{
+ int bus;
+ int devnum;
+ pci_dev_t bdf;
+ uint32_t class;
+
+ for (bus = 0; bus <= pci_last_busno(); bus++) {
+ for (devnum = 0; devnum < PCI_MAX_PCI_DEVICES-1; devnum++) {
+ pci_read_config_dword(PCI_BDF(bus, devnum, 0),
+ PCI_CLASS_REVISION, &class);
+ if (class >> 16 == 0xffff)
+ continue;
+
+ for (bdf = PCI_BDF(bus, devnum, 0);
+ bdf <= PCI_BDF(bus, devnum,
+ PCI_MAX_PCI_FUNCTIONS - 1);
+ bdf += PCI_BDF(0, 0, 1)) {
+ pci_read_config_dword(bdf, PCI_CLASS_REVISION,
+ &class);
+ class >>= 8;
+
+ if (class != find_class)
+ continue;
+ if (index) {
+ index--;
+ continue;
+ }
+ /* Return index'th controller. */
+ return bdf;
+ }
+ }
+ }
+
+ return -ENODEV;
+}
+
pci_dev_t pci_find_device(unsigned int vendor, unsigned int device, int index)
{
struct pci_device_id ids[2] = { {}, {0, 0} };
diff --git a/include/pci.h b/include/pci.h
index 4fbb8f6..004a048 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -644,8 +644,7 @@ extern int pciauto_config_device(struct pci_controller
*hose, pci_dev_t dev);
extern pci_dev_t pci_find_device (unsigned int vendor, unsigned int device,
int index);
extern pci_dev_t pci_find_devices (struct pci_device_id *ids, int index);
-extern pci_dev_t pci_find_class(int wanted_class, int wanted_sub_code,
- int wanted_prog_if, int index);
+pci_dev_t pci_find_class(unsigned int find_class, int index);
extern int pci_hose_config_device(struct pci_controller *hose,
pci_dev_t dev,
--
2.2.0.rc0.207.ga3a616c
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